Document:

exv4w1

Exhibit 4.1

EXECUTION VERSION

 
 

TOWER GROUP, INC.

AND

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

INDENTURE

Dated as of September 20, 2010

5.00% Convertible Senior Notes due 2014

 
 

 

TABLE OF CONTENTS

	 	 	 	 	 
	 	 	Page	 
	
ARTICLE 1

Definitions
	 
	 	 	 	 
	Section 1.01. Definitions
	 	 	1	 
	Section 1.02. References to Interest
	 	 	12	 
	 
	 	 	 	 
	
ARTICLE 2

Issue, Description, Execution, Registration and Exchange of Notes
	 
	 	 	 	 
	Section 2.01. Designation and Amount
	 	 	12	 
	Section 2.02. Form of Notes
	 	 	12	 
	Section 2.03. Date and Denomination of Notes; Payments of Interest and Defaulted Amounts

	 	 	13	 
	Section 2.04. Execution, Authentication and Delivery of Notes
	 	 	14	 
	Section 2.05. Exchange and Registration of Transfer of Notes; Restrictions on Transfer; Depositary
	 	 	15	 
	Section 2.06. Mutilated, Destroyed, Lost or Stolen Notes
	 	 	21	 
	Section 2.07. Temporary Notes
	 	 	22	 
	Section 2.08. Cancellation of Notes Paid, Converted, Etc.
	 	 	22	 
	Section 2.09. CUSIP Numbers
	 	 	23	 
	Section 2.10. Additional Notes; Repurchases
	 	 	23	 
	Section 2.11. Deemed Removal Of Restrictive Legend
	 	 	23	 
	 
	 	 	 	 
	
ARTICLE 3

Satisfaction and Discharge
	 
	 	 	 	 
	Section 3.01. Satisfaction and Discharge
	 	 	24	 
	 
	 	 	 	 
	
ARTICLE 4

Particular Covenants of the Company
	 
	 	 	 	 
	Section 4.01. Payment of Principal and Interest
	 	 	24	 
	Section 4.02. Maintenance of Office or Agency
	 	 	24	 
	Section 4.03. Appointments to Fill Vacancies in Trustee’s Office
	 	 	25	 
	Section 4.04. Provisions as to Paying Agent
	 	 	25	 
	Section 4.05. Existence
	 	 	26	 
	Section 4.06. Rule 144A Information Requirement and Annual Reports
	 	 	26	 
	Section 4.07. Stay, Extension and Usury Laws
	 	 	28	 
	Section 4.08. Compliance Certificate; Statements as to Defaults
	 	 	28	 
	Section 4.09. Further Instruments and Acts
	 	 	29	 

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	 	 	Page	 

	
ARTICLE 5

Lists of Holders and Reports by the Company and the Trustee
	 
	Section 5.01. Lists of Holders
	 	 	29	 
	Section 5.02. Preservation and Disclosure of Lists
	 	 	29	 
	 
	
ARTICLE 6

Defaults and Remedies
	 
	 	 	 	 
	Section 6.01. Events of Default
	 	 	29	 
	Section 6.02. Acceleration; Rescission and Annulment
	 	 	31	 
	Section 6.03. Additional Interest
	 	 	32	 
	Section 6.04. Payments of Notes on Default; Suit Therefor
	 	 	32	 
	Section 6.05. Application of Monies Collected by Trustee
	 	 	34	 
	Section 6.06. Proceedings by Holders
	 	 	34	 
	Section 6.07. Proceedings by Trustee
	 	 	35	 
	Section 6.08. Remedies Cumulative and Continuing
	 	 	36	 
	Section 6.09. Direction of Proceedings and Waiver of Defaults by Majority of Holders
	 	 	36	 
	Section 6.10. Notice of Defaults
	 	 	36	 
	Section 6.11. Undertaking to Pay Costs
	 	 	37	 
	 
	 	 	 	 
	
ARTICLE 7

Concerning the Trustee
	 
	 	 	 	 
	Section 7.01. Duties and Responsibilities of Trustee
	 	 	37	 
	Section 7.02. Reliance on Documents, Opinions, Etc.
	 	 	39	 
	Section 7.03. No Responsibility for Recitals, Etc.
	 	 	40	 
	Section 7.04. Trustee, Paying Agents, Conversion Agents, Bid Solicitation
Agent or Note Registrar May Own Notes
	 	 	40	 
	Section 7.05. Monies and Shares of Common Stock to Be Held in Trust
	 	 	40	 
	Section 7.06. Compensation and Expenses of Trustee
	 	 	40	 
	Section 7.07. Officers’ Certificate as Evidence
	 	 	41	 
	Section 7.08. Eligibility of Trustee
	 	 	41	 
	Section 7.09. Resignation or Removal of Trustee
	 	 	41	 
	Section 7.10. Acceptance by Successor Trustee
	 	 	42	 
	Section 7.11. Succession by Merger, Etc.
	 	 	43	 
	Section 7.12. Trustee’s Application for Instructions from the Company
	 	 	44	 
	 
	 	 	 	 
	
ARTICLE 8

Concerning the Holders
	 
	 	 	 	 
	Section 8.01. Action by Holders
	 	 	44	 
	Section 8.02. Proof of Execution by Holders
	 	 	44	 
	Section 8.03. Who Are Deemed Absolute Owners
	 	 	44	 
	Section 8.04. Company-Owned Notes Disregarded
	 	 	45	 
	Section 8.05. Revocation of Consents; Future Holders Bound
	 	 	45	 

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	 	 	Page	 

	
ARTICLE 9

Holders’ Meetings
	 
	 	 	 	 
	Section 9.01. Purpose of Meetings
	 	 	46	 
	Section 9.02. Call of Meetings by Trustee
	 	 	46	 
	Section 9.03. Call of Meetings by Company or Holders
	 	 	46	 
	Section 9.04. Qualifications for Voting
	 	 	46	 
	Section 9.05. Regulations
	 	 	47	 
	Section 9.06. Voting
	 	 	47	 
	Section 9.07. No Delay of Rights by Meeting
	 	 	48	 
	 
	 	 	 	 
	
ARTICLE 10

Supplemental Indentures
	 
	Section 10.01. Supplemental Indentures Without Consent of Holders
	 	 	48	 
	Section 10.02. Supplemental Indentures with Consent of Holders
	 	 	49	 
	Section 10.03. Effect of Supplemental Indentures
	 	 	50	 
	Section 10.04. Notation on Notes
	 	 	50	 
	Section 10.05. Evidence of Compliance of Supplemental Indenture to Be Furnished to Trustee
	 	 	50	 
	 
	 	 	 	 
	
ARTICLE 11

Consolidation, Merger, Sale, Conveyance and Lease
	 
	 	 	 	 
	Section 11.01. Company May Consolidate, Etc. on Certain Terms
	 	 	50	 
	Section 11.02. Successor Corporation to Be Substituted
	 	 	51	 
	Section 11.03. Opinion of Counsel to Be Given Trustee
	 	 	52	 
	 
	 	 	 	 
	
ARTICLE 12

Immunity of Incorporators, Stockholders, Officers and Directors
	 
	 	 	 	 
	Section 12.01. No Personal Liability of Directors, Officers, Employees and
Shareholders
	 	 	52	 
	 
	 	 	 	 
	
ARTICLE 13

Intentionally Omitted
	 
	 	 	 	 
	
ARTICLE 14

Conversion of Notes
	 
	 	 	 	 
	Section 14.01. Conversion Privilege
	 	 	52	 
	Section 14.02. Conversion Procedure; Settlement Upon Conversion
	 	 	54	 
	Section 14.03. Increased Conversion Rate Applicable to Certain Notes Surrendered in Connection with Make-Whole Fundamental
Changes
	 	 	59	 
	Section 14.04. Adjustment of Conversion Rate
	 	 	61	 
	Section 14.05. Adjustments of Prices
	 	 	70	 
	Section 14.06. Shares to Be Fully Paid
	 	 	71	 

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	Section 14.07. Effect of Recapitalizations, Reclassifications and Changes of Common Stock

	 	 	71	 
	Section 14.08. Certain Covenants
	 	 	74	 
	Section 14.09. Responsibility of Trustee
	 	 	74	 
	Section 14.10. Notice to Holders Prior to Certain Actions
	 	 	75	 
	Section 14.11. Stockholder Rights Plans
	 	 	75	 
	Section 14.12. Limit on Issuance of Shares of Common Stock Upon Conversion
	 	 	75	 
	 
	 	 	 	 
	
ARTICLE 15

Purchase of Notes at Option of Holders
	 
	 	 	 	 
	Section 15.01. Intentionally Omitted
	 	 	76	 
	Section 15.02. Purchase at Option of Holders Upon a Fundamental Change
	 	 	76	 
	Section 15.03. Withdrawal of Fundamental Change Purchase Notice
	 	 	78	 
	Section 15.04. Deposit of Fundamental Change Purchase Price
	 	 	79	 
	Section 15.05. Covenant to Comply with Applicable Laws Upon Purchase of Notes
	 	 	79	 
	 
	 	 	 	 
	
ARTICLE 16

No Redemption
	 
	 	 	 	 
	Section 16.01. No Redemption
	 	 	80	 
	 
	 	 	 	 
	
ARTICLE 17

Miscellaneous Provisions
	 
	 	 	 	 
	Section 17.01. Provisions Binding on Company’s Successors
	 	 	80	 
	Section 17.02. Official Acts by Successor Corporation
	 	 	80	 
	Section 17.03. Addresses for Notices, Etc.
	 	 	80	 
	Section 17.04. Governing Law
	 	 	81	 
	Section 17.05. Evidence of Compliance with Conditions Precedent;
Certificates and Opinions of Counsel to Trustee
	 	 	81	 
	Section 17.06. Legal Holidays
	 	 	81	 
	Section 17.07. No Security Interest Created
	 	 	81	 
	Section 17.08. Benefits of Indenture
	 	 	82	 
	Section 17.09. Table of Contents, Headings, Etc.
	 	 	82	 
	Section 17.10. Authenticating Agent
	 	 	82	 
	Section 17.11. Execution in Counterparts
	 	 	83	 
	Section 17.12. Severability
	 	 	83	 
	Section 17.13. Waiver of Jury Trial
	 	 	83	 
	Section 17.14. Force Majeure
	 	 	83	 
	Section 17.15. Calculations
	 	 	83	 
	Section 17.16. U.S.A. Patriot Act
	 	 	84	 
	 
	 	 	 	 
	
EXHIBIT
	 
	 	 	 	 
	Exhibit A            Form of Note
	 	 	A-1	 
	Exhibit B            Form of Free Transferability Certificate
	 	 	B-1	 

iv

 

     INDENTURE dated as of September 20, 2010 between TOWER GROUP, INC., a Delaware corporation, as
issuer (the “Company”, as more fully set forth in Section 1.01) and U.S. Bank National Association,
a national banking association, as trustee (the “Trustee”, as more fully set forth in Section
1.01).

W I T N E S S E T H:

     WHEREAS, for its lawful corporate purposes, the Company has duly authorized the issuance of
its 5.00% Convertible Senior Notes due 2014 (the “Notes”), initially in an aggregate principal
amount not to exceed $150,000,000, and in order to provide the terms and conditions upon which the
Notes are to be authenticated, issued and delivered, the Company has duly authorized the execution
and delivery of this Indenture; and

     WHEREAS, the Form of Note, the certificate of authentication to be borne by each Note, the
Form of Notice of Conversion, the Form of Fundamental Change Purchase Notice and the Form of
Assignment and Transfer to be borne by the Notes are to be substantially in the forms hereinafter
provided; and

     WHEREAS, all acts and things necessary to make the Notes, 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 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 Notes have in all respects been duly authorized.

     NOW, THEREFORE, THIS INDENTURE WITNESSETH:

     That in order to declare the terms and conditions upon which the Notes are, and are to be,
authenticated, issued and delivered, and in consideration of the premises and of the purchase and
acceptance of the Notes 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 Notes
(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. 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 Interest” means all amounts, if any, payable pursuant to Section 4.06(d), Section
4.06(e) and Section 6.03, as applicable.

     “Additional Interest Event” shall have the meaning specified in Section 4.06(e).

     “Additional Shares” shall have the meaning specified in Section 14.03(a).

     “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.

     “Bid Solicitation Agent” means the Person appointed by the Company to solicit bids for the
Trading Price of the Notes in accordance with Section 14.01(b)(i). The Trustee shall initially act
as the Bid Solicitation Agent, either directly or through a designated agent.

     “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 copy of a resolution certified by the Secretary or an Assistant
Secretary of the Company to have been duly adopted by the Board of Directors, and to be in full
force and effect on the date of such certification, and delivered to the Trustee.

     “Business Day” means any day other than a Saturday, a Sunday or a day on which the Federal
Reserve Bank of New York is authorized or required by law or executive order to close or be closed.

     “Capital Stock” means, for any entity, any and all shares, interests, rights to purchase,
warrants, options, participations or other equivalents of or interests in (however designated)
stock issued by that entity.

     “Cash Amount” means the maximum dollar amount of the Conversion Obligation per $1,000
principal amount of Notes that can be settled in cash, as specified in the Settlement Notice
related to any converted Notes.

     “Cash Settlement” shall have the meaning specified in Section 14.02(a).

     “Clause A Distribution” shall have the meaning specified in Section 14.04(c).

     “Clause B Distribution” shall have the meaning specified in Section 14.04(c).

     “Clause C Distribution” shall have the meaning specified in Section 14.04(c).

     “close of business” means 5:00 p.m. (New York City time).

2

 

     “Combination Settlement” shall have the meaning specified in Section 14.02(a).

     “Commission” means the U.S. Securities and Exchange Commission.

     “Common Equity” of any Person means Capital Stock of such Person that is generally entitled
(a) to vote in the election of directors of such Person or (b) if such Person is not a corporation,
to vote or otherwise participate in the selection of the governing body, partners, managers or
others that will control the management or policies of such Person.

     “Common Stock” means the common stock of the Company, par value $0.01 per share, subject to
Section 14.07.

     “Company” shall have the meaning specified in the first paragraph of this Indenture, and
subject to the provisions of Article 11, shall include its successors and assigns.

     “Company Order” means a written order of the Company, signed by (a) any Officer and (b) any
other Officer or any Assistant Treasurer or Assistant Secretary of the Company, and delivered to
the Trustee.

     “Conversion Agent” shall have the meaning specified in Section 4.02.

     “Conversion Date” shall have the meaning specified in Section 14.02(c).

     “Conversion Obligation” shall have the meaning specified in Section 14.01(a).

     “Conversion Price” means, as of any date, $1,000, divided by the Conversion Rate as of such
date.

     “Conversion Rate” means 36.3782 shares of Common Stock per $1,000 principal amount of Notes,
as adjusted pursuant to Section 14.04.

     “Corporate Trust Office” means the office of the Trustee located at 100 Wall Street, Suite
1600, New York, NY 10005, Attention: Corporate Trust Services, or such other address as the Trustee
may designate from time to time by notice to the Holders and the Company, or the office of any
successor trustee as such successor trustee may designate from time to time by notice to the
Holders and the Company.

     “Custodian” means the Trustee, as custodian for The Depository Trust Company, with respect to
the Global Notes, or any successor entity thereto.

     “Daily Cash Amount” means, in respect of each $1,000 principal amount of Notes as to which a
Combination Settlement applies, 2.5% of the applicable Cash Amount.

     “Daily Conversion Value” means, for each of the 40 consecutive Trading Days during the
relevant Observation Period, 2.5% of the product of (a) the Conversion Rate on such Trading Day and
(b) the Daily VWAP of the Common Stock on such Trading Day.

3

 

     “Daily Settlement Amount,” for each of the 40 consecutive Trading Days during the relevant
Observation Period, shall consist of:

     (a) cash in an amount equal to the lesser of (i) the Daily Cash Amount and (ii) the
Daily Conversion Value on such Trading Day; and

     (b) if the Daily Conversion Value on such Trading Day exceeds the Daily Cash Amount, a
number of shares of Common Stock equal to (i) the difference between such Daily Conversion
Value and such Daily Cash Amount, divided by (ii) the Daily VWAP on such Trading Day.

     “Daily VWAP” means, for each of the 40 consecutive Trading Days during the applicable
Observation Period, the per share volume-weighted average price as displayed under the heading
“Bloomberg VWAP” on Bloomberg page “TWGP.UQ <equity> AQR” (or its equivalent successor if
such page is not available) in respect of the period from the scheduled open of trading until the
scheduled close of trading of the primary trading session on such Trading Day (or if such
volume-weighted average price is unavailable, the market value of one share of the Common Stock on
such Trading Day determined, using a volume-weighted average method, by a nationally recognized
independent investment banking firm retained for this purpose by the Company). The “Daily VWAP”
shall be determined without regard to after hours trading or any other trading outside of the
regular trading session trading hours.

     “Default” means any event that is, or after notice or passage of time, or both, would be, an
Event of Default.

     “Defaulted Amounts” means any amounts on any Note (including, without limitation, the
Fundamental Change Purchase Price, principal and interest) that are payable but are not punctually
paid or duly provided for.

     “Depositary” means, with respect to each Global Note, the Person specified in Section 2.05(c)
as the Depositary with respect to such Notes, 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.

     “Distributed Property” shall have the meaning specified in Section 14.04(c).

     “Distribution Effective Date” means, with respect to a particular transaction, the first date
on which shares of the Common Stock trade on the applicable exchange or in the applicable market,
regular way, reflecting such transaction.

     “Effective Date” shall have the meaning specified in Section 14.03(c).

     “Event of Default” shall have the meaning specified in Section 6.01.

     “Ex-Dividend Date” means the first date on which shares of the Common Stock trade on the
applicable exchange or in the applicable market, regular way, without the right to receive the
issuance, dividend or distribution in question, from the Company or, if applicable, from the seller

4

 

of Common Stock on such exchange or market (in the form of due bills or otherwise) as
determined by such exchange or market.

     “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and
regulations promulgated thereunder.

     “Form of Assignment and Transfer” shall mean the “Form of Assignment and Transfer” attached as
Attachment 3 to the Form of Note attached hereto as Exhibit A.

     “Form of Fundamental Change Purchase Notice” shall mean the “Form of Fundamental Change
Purchase Notice” attached as Attachment 2 to the Form of Note attached hereto as Exhibit A.

     “Form of Notice of Conversion” shall mean the “Form of Notice of Conversion” attached as
Attachment 1 to the Form of Note attached hereto as Exhibit A.

     “Fundamental Change” shall be deemed to have occurred at the time after the Notes are
originally issued that any of the following occurs:

     (a) a “person” or “group” within the meaning of Section 13(d) of the Exchange Act,
other than the Company, its Subsidiaries and the employee benefit plans of the Company and
its Subsidiaries, has become the “beneficial owner,” as defined in Rule 13d-3 under the
Exchange Act, of shares of the Company’s Common Equity representing more than 50% of the
voting power of the Company’s Common Equity;

     (b) consummation of (A) any recapitalization, reclassification or change of the Common
Stock (other than changes resulting from a subdivision or combination or changes solely in
par value) as a result of which the Common Stock would be converted into, or exchanged for,
stock, other securities, other property or assets or (B) any share exchange, consolidation
or merger involving the Company pursuant to which the Common Stock will be converted into
cash, securities or other property 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 one of the
Company’s Subsidiaries; provided, however, that a transaction where the holders of all
classes of the Company’s Common Equity immediately prior to such transaction that is a share
exchange, consolidation or merger (each such holder, a “Pre-Transaction Holder”) own,
directly or indirectly, more than 50% of all classes of Common Equity of the continuing or
surviving corporation or transferee or the parent thereof immediately after such event shall
not be a Fundamental Change, so long as the proportion of the respective ownership of each
Pre-Transaction Holder does not substantially change solely pursuant to the terms of such
transaction;

     (c) the stockholders of the Company approve any plan or proposal for the liquidation or
dissolution of the Company; or

5

 

     (d) the Common Stock (or other common stock underlying the Notes) ceases to be listed
or quoted on any of the New York Stock Exchange, the NASDAQ Global Select Market or the
NASDAQ Global Market (or any of their respective successors);

provided, however, that a transaction or transactions described in clause (b) above shall not
constitute a Fundamental Change, if at least 90% of the consideration received or to be received by
the common stockholders of the Company, excluding cash payments for fractional shares, in
connection with such transaction or transactions consists of shares of Publicly Traded Securities,
and as a result of such transaction or transactions the Notes become convertible into such Publicly
Traded Securities, excluding cash payments for fractional shares (subject to the provisions of
Section 14.02(a)).

     “Fundamental Change Company Notice” shall have the meaning specified in Section 15.02(c).

     “Fundamental Change Purchase Date” shall have the meaning specified in Section 15.02(a).

     “Fundamental Change Purchase Notice” shall have the meaning specified in Section 15.02(b)(i).

     “Fundamental Change Purchase Price” shall have the meaning specified in Section 15.02(a).

     “Global Note” shall have the meaning specified in Section 2.05(b).

     “Holder,” as applied to any Note, or other similar terms (but excluding the term “beneficial
holder”), shall mean any person in whose name at the time a particular Note is registered on the
Note Register.

     “Indenture” means this instrument as originally executed or, if amended or supplemented as
herein provided, as so amended or supplemented.

     “Initial Dividend Threshold” shall have the meaning specified in Section 14.04(d).

     “Initial Purchasers” shall have the meaning specified in the definition of “Purchase
Agreement”.

     “Interest Payment Date” means each March 15, and September 15 of each year, beginning on March
15, 2011.

     “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 ask prices or, if more
than one in either case, the average of the average bid and the average ask prices) on that date as
reported in composite transactions for the principal U.S. securities exchange on which the Common
Stock is traded. If the Common Stock is not listed for trading on a U.S. national or regional
securities exchange on the relevant date, the “Last Reported Sale Price” shall be the average of
the last quoted bid and ask prices for the Common Stock in the over-the-counter

6

 

market on the relevant date as reported by Pink OTC Markets Inc. or a similar organization.
If the Common Stock is not so quoted, the “Last Reported Sale Price” shall be the average of the
mid-point of the last bid and ask prices for the Common Stock on the relevant date from each of at
least three nationally recognized independent investment banking firms selected by the Company for
this purpose.

     “Make-Whole Fundamental Change” means any transaction or event that constitutes a Fundamental
Change (as defined above and determined after giving effect to any and all exceptions to or
exclusions from such definition, but without regard to the proviso in clause (b) of the definition
thereof).

     “Market Disruption Event” means (a) a failure by the primary United States national or
regional securities exchange or market on which the Common Stock is listed or admitted for trading
to open for trading during its regular trading session or (b) the occurrence or existence prior to
1:00 p.m., New York City time, on any Scheduled Trading Day for the Common Stock for more than one
half-hour period in the aggregate during regular trading hours of any suspension or limitation
imposed on trading (by reason of movements in price exceeding limits permitted by the relevant
stock exchange or otherwise) in the Common Stock or in any options or futures contracts relating to
the Common Stock.

     “Maturity Date” means September 15, 2014.

     “Measurement Period” shall have the meaning specified in Section 14.01(b)(i).

     “Merger Common Stock” shall have the meaning specified in Section 14.07(e)(i).

     “Merger Event” shall have the meaning specified in Section 14.07(a).

     “Merger Valuation Percentage” shall have the meaning specified in Section 14.07(f)(i).

     “Merger Valuation Period” shall have the meaning specified in Section 14.07(f)(ii).

     “Note” or “Notes” shall have the meaning specified in the first paragraph of the recitals of
this Indenture.

     “Note Register” shall have the meaning specified in Section 2.05(a).

     “Note Registrar” shall have the meaning specified in Section 2.05(a).

     “Notice of Conversion” shall have the meaning specified in Section 14.02(b).

     “Observation Period” with respect to any Note surrendered for conversion means: (i) if the
relevant Conversion Date occurs prior to March 15, 2014, and Cash Settlement or Combination
Settlement applies, the 40 consecutive Trading Day period beginning on and including the third
Trading Day immediately following such Conversion Date; and (ii) if the relevant Conversion Date
occurs on or after March 15, 2014, regardless of the Settlement Method, the 40 consecutive Trading
Days beginning on and including the 42nd Scheduled Trading Day immediately preceding the Maturity
Date.

7

 

     “Offering Memorandum” means the preliminary offering memorandum dated September 14, 2010, as
supplemented by the pricing term sheet dated September 14, 2010, relating to the offering and sale
of the Notes.

     “Officer” means, with respect to the Company, the President, the Chief Executive Officer, the
Treasurer, the Secretary or any Vice President (whether or not designated by a number or numbers or
word added before or after the title “Vice President”).

     “Officers’ Certificate,” when used with respect to the Company, means a certificate that is
delivered to the Trustee and that is signed by (a) two Officers of the Company or (b) one Officer
of the Company and one of any Assistant Treasurer, any Assistant Secretary or the Controller of the
Company. Each such certificate shall include the statements provided for in Section 17.05 if and
to the extent required by the provisions of such Section. One of the Officers giving an Officers’
Certificate pursuant to Section 4.08 shall be the principal executive, financial or accounting
officer of the Company.

     “open of business” means 9:00 a.m. (New York City time).

     “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 acceptable to the Trustee, that is
delivered to the Trustee. Each such opinion shall include the statements provided for in Section
17.05 if and to the extent required by the provisions of such Section 17.05.

     “outstanding,” when used with reference to Notes, shall, subject to the provisions of Section
8.04, mean, as of any particular time, all Notes authenticated and delivered by the Trustee under
this Indenture, except:

     (a) Notes theretofore canceled by the Trustee or accepted by the Trustee for
cancellation;

     (b) Notes, or portions thereof, that have become due and payable and in respect 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 shall have been set aside and segregated
in trust by the Company (if the Company shall act as its own Paying Agent);

     (c) Notes that have been paid pursuant to Section 2.06 or Notes in lieu of which, or in
substitution for which, other Notes shall have been authenticated and delivered pursuant to
the terms of Section 2.06 unless proof satisfactory to the Trustee is presented that any
such Notes are held by protected purchasers in due course;

     (d) Notes converted pursuant to Article 14 and required to be cancelled pursuant to
Section 2.08; and

     (e) Notes repurchased by the Company pursuant to the penultimate sentence of Section
2.10.

8

 

     “Paying Agent” shall have the meaning specified in Section 4.02.

     “Person” means an individual, a corporation, a limited liability company, an association, a
partnership, a joint venture, a joint stock company, a trust, an unincorporated organization or a
government or an agency or a political subdivision thereof.

     “Physical Notes” means permanent certificated Notes in registered form issued in denominations
of $1,000 principal amount and integral multiples thereof.

     “Physical Settlement” shall have the meaning specified in Section 14.02(a).

     “Pre-Transaction Holder” shall have the meaning specified in the definition of “Fundamental
Change”.

     “Predecessor Note” of any particular Note means every previous Note evidencing all or a
portion of the same debt as that evidenced by such particular Note; and, for the purposes of this
definition, any Note authenticated and delivered under Section 2.06 in lieu of or in exchange for a
mutilated, lost, destroyed or stolen Note shall be deemed to evidence the same debt as the
mutilated, lost, destroyed or stolen Note that it replaces.

     “Publicly Traded Securities” means shares of common stock that are listed or quoted on any of
the New York Stock Exchange, the NASDAQ Global Select Market or the NASDAQ Global Market (or any of
their respective successors) or will be so listed or quoted when issued or exchanged in connection
with a Fundamental Change described in clause (b) of the definition thereof.

     “Purchase Agreement” means that certain Purchase Agreement, dated as of September 14, 2010,
among the Company and the Representatives, as representatives of the several initial purchasers
listed on Schedule 1 thereto (the “Initial Purchasers”).

     “Record Date” means, with respect to any dividend, distribution or other transaction or event
in which the holders of the Common Stock have the right to receive any cash, securities or other
property or in which the Common Stock is exchanged for or converted into any combination of cash,
securities or other property, the date fixed for determination of stockholders entitled to receive
such cash, securities or other property (whether such date is fixed by the Board of Directors, by
statute, by contract or otherwise).

     “Reference Property” shall have the meaning specified in Section 14.07(a).

     “Regular Record Date,” with respect to any Interest Payment Date, shall mean the March 1 or
September 1 (whether or not such day is a Business Day) immediately preceding the applicable March
15 or September 15 Interest Payment Date, respectively.

     “Representatives” means J.P. Morgan Securities LLC and Merrill Lynch, Pierce, Fenner & Smith
Incorporated.

     “Resale Restriction Termination Date” shall have the meaning specified in Section 2.05(c).

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     “Responsible Officer” means, when used with respect to the Trustee, any officer within the
corporate trust department of the Trustee, including any vice president, assistant vice president,
assistant secretary, assistant treasurer, trust officer or any other officer of the Trustee who
customarily performs functions similar to those performed by the Persons who at the time shall be
such officers, respectively, or to whom any corporate trust matter is referred because of such
person’s knowledge of and familiarity with the particular subject and who shall have direct
responsibility for the administration of this Indenture.

     “Restricted Securities” shall have the meaning specified in Section 2.05(c).

     “Rule 144A” means Rule 144A as promulgated under the Securities Act.

     “Scheduled Trading Day” means a day that is scheduled to be a Trading Day on the principal
United States national or regional securities exchange or market on which the Common Stock is
listed or admitted for trading. If the Common Stock is not so listed or admitted for trading,
“Scheduled Trading Day” means a Business Day.

     “Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations
promulgated thereunder.

     “Settlement Method” means, with respect to any conversion of Notes, Physical Settlement, Cash
Settlement or Combination Settlement, as elected (or deemed to have been elected) by the Company in
accordance with Section 14.02(a).

     “Settlement Notice” means the notice that the Company is required to deliver pursuant to
clause (A) or (B) of Section 14.02(a)(ii) with respect to a conversion of the Notes, specifying the
relevant Settlement Method and, if applicable, the related Cash Amount.

     “Significant Subsidiary” means a Subsidiary of the Company that meets the definition of
“significant subsidiary” in Article 1, Rule 1-02 of Regulation S-X under the Exchange Act.

     “Spin-Off” shall have the meaning specified in Section 14.04(c).

     “Stock Price” shall have the meaning specified in Section 14.03(c).

     “Subsidiary” means, with respect to any Person, any corporation, association, partnership or
other business entity of which more than 50% of the total voting power of shares of Capital Stock
or other interests (including partnership interests) entitled (without regard to the occurrence of
any contingency) to vote in the election of directors, managers, general partners or trustees
thereof is at the time owned or controlled, directly or indirectly, by (i) such Person; (ii) such
Person and one or more Subsidiaries of such Person; or (iii) one or more Subsidiaries of such
Person.

     “Successor Company” shall have the meaning specified in Section 11.01(a).

     “Trading Day” means a day on which (i) trading in the Common Stock generally occurs on the
NASDAQ Global Select Market or, if the Common Stock is not then listed on the NASDAQ Global Select
Market, on the principal other United States national or regional

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securities exchange on which the Common Stock is then listed or, if the Common Stock is not
then listed on a United States national or regional securities exchange, on the principal other
market on which the Common Stock is then traded and (ii) a Last Reported Sale Price for the Common
Stock is available on such securities exchange or market; provided that if the Common Stock (or
other security for which a closing sale price must be determined) is not so listed or traded,
“Trading Day” means a Business Day; and provided, further, that for purposes of determining amounts
due upon conversion only, “Trading Day” means a day on which (x) there is no Market Disruption
Event and (y) trading in the Common Stock generally occurs on the NASDAQ Global Select Market or,
if the Common Stock is not then listed on the NASDAQ Global Select Market, on the principal other
United States national or regional securities exchange on which the Common Stock is then listed or,
if the Common Stock is not then listed on a United States national or regional securities exchange,
on the principal other market on which the Common Stock is then listed or admitted for trading,
except that if the Common Stock is not so listed or admitted for trading, “Trading Day” means a
Business Day.

     “Trading Price” of the Notes on any date of determination means the average of the secondary
market bid quotations obtained by the Bid Solicitation Agent for $5 million principal amount of
Notes at approximately 3:30 p.m., New York City time, on such determination date from three
independent nationally recognized securities dealers the Company selects for this purpose; provided
that, if three such bids cannot reasonably be obtained by the Bid Solicitation Agent, but two such
bids are obtained, then the average of such two bids shall be used, and if only one such bid can
reasonably be obtained by the Bid Solicitation Agent, that one bid shall be used. If the Bid
Solicitation Agent cannot reasonably obtain at least one bid for $5 million principal amount of
Notes from a nationally recognized securities dealer on any determination date, then the Trading
Price per $1,000 principal amount of Notes on such determination date shall be deemed to be less
than 98% of the product of the Last Reported Sale Price of the Common Stock and the applicable
Conversion Rate.

     “Trading Price Condition” shall have the meaning specified in Section 14.01(b)(i).

     “transfer” shall have the meaning specified in Section 2.05(c).

     “Trigger Event” shall have the meaning specified in Section 14.04(c).

     “Trust Indenture Act” means the Trust Indenture Act of 1939, as amended, as it was in force at
the date of execution of this Indenture; provided, however, that in the event 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 the Person named as the “Trustee” in the first paragraph of this Indenture
until a successor trustee shall have become such pursuant to the applicable provisions of this
Indenture, and thereafter “Trustee” shall mean or include each Person who is then a Trustee
hereunder.

     “unit of Reference Property” shall have the meaning specified in Section 14.07(a).

     “Valuation Period” shall have the meaning specified in Section 14.04(c).

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     Section 1.02. References to Interest. Unless the context otherwise requires, any reference
to interest on, or in respect of, any Note in this Indenture shall be deemed to include Additional
Interest if, in such context, Additional Interest is, was or would be payable pursuant to any of
Section 4.06(d), Section 4.06(e) and Section 6.03. Any express mention of Additional Interest in
any provision hereof shall not be construed as excluding Additional Interest in those provisions
hereof where such express mention is not made.

ARTICLE 2

Issue, Description, Execution, Registration and Exchange of Notes

     Section 2.01. Designation and Amount. The Notes shall be designated as the “5.00%
Convertible Senior Notes due 2014.” The aggregate principal amount of Notes that may be
authenticated and delivered under this Indenture is initially limited to $150,000,000, subject to
Section 2.10 and except for Notes authenticated and delivered upon registration or transfer of, or
in exchange for, or in lieu of other Notes pursuant to Section 2.05, Section 2.06, Section 10.04,
Section 14.02 and Section 15.04.

     Section 2.02. Form of Notes. The Notes and the Trustee’s certificate of authentication to be
borne by such Notes shall be substantially in the respective forms set forth in Exhibit A, the
terms and provisions of which shall constitute, and are hereby expressly incorporated in and made a
part of this Indenture. 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 Global Note may be endorsed with or have incorporated in the text thereof such legends or
recitals or changes not inconsistent with the provisions of this Indenture as may be required by
the Custodian or the Depositary, or as may be required to comply with any applicable law or any
regulation thereunder or with the rules and regulations of any securities exchange or automated
quotation system upon which the Notes may be listed or traded or designated for issuance or to
conform with any usage with respect thereto, or to indicate any special limitations or restrictions
to which any particular Notes are subject.

     Any of the Notes may have such letters, numbers or other marks of identification and such
notations, legends or endorsements 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 to comply with any 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 Notes may be listed or designated for issuance, or to conform to usage or to
indicate any special limitations or restrictions to which any particular Notes are subject.

     Each Global Note shall represent such principal amount of the outstanding Notes as shall be
specified therein and shall provide that it shall represent the aggregate principal amount of
outstanding Notes from time to time endorsed thereon and that the aggregate principal amount of
outstanding Notes represented thereby may from time to time be increased or reduced to reflect
repurchases, cancellations, conversions, transfers or exchanges permitted hereby. Any

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endorsement of the Global Note to reflect the amount of any increase or decrease in the amount
of outstanding Notes 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 Notes in
accordance with this Indenture. Payment of principal (including the Fundamental Change Purchase
Price, if applicable) of, and accrued and unpaid interest on, the Global Note shall be made to the
Holder of such Note on the date of payment, unless a record date or other means of determining
Holders eligible to receive payment is provided for herein.

     Section 2.03. Date and Denomination of Notes; Payments of Interest and Defaulted Amounts.
(a) The Notes shall be issuable in registered form without coupons in denominations of $1,000
principal amount and integral multiples thereof. Each Note shall be dated the date of its
authentication and shall bear interest from the date specified on the face of the form of Note
attached as Exhibit A hereto. Accrued interest on the Notes shall be computed on the basis of a
360-day year composed of twelve 30-day months.

     (b) The Person in whose name any Note (or its Predecessor Note) is registered on the Note
Register at the close of business on any Regular Record Date with respect to any Interest Payment
Date shall be entitled to receive the interest payable on such Interest Payment Date. Interest
shall be payable at the office or agency of the Company maintained by the Company for such purposes
in the Borough of Manhattan, The City of New York, which shall initially be the Corporate Trust
Office. The Company shall pay interest (i) on any Physical Notes (A) to Holders holding Physical
Notes having an aggregate principal amount of $5,000,000 or less, by check mailed to the Holders of
these Notes at their address as it appears in the Note Register and (B) to Holders holding Physical
Notes having an aggregate principal amount of more than $5,000,000, either by check mailed to such
Holders or, upon application by such a Holder to the Note Registrar not later than the relevant
Regular Record Date, by wire transfer in immediately available funds to that Holder’s account
within the United States, which application shall remain in effect until the Holder notifies, in
writing, the Note Registrar to the contrary or (ii) on any Global Note by wire transfer of
immediately available funds to the account of the Depositary or its nominee.

     (c) Any Defaulted Amounts shall forthwith cease to be payable to the Holder on the relevant
payment date but shall accrue interest per annum at the rate borne by the Notes plus one percent,
subject to the enforceability thereof under applicable law, from, and including, such relevant
payment date, and such Defaulted Amounts together with such interest thereon shall be paid by the
Company, at its election in each case, as provided in clause (i) or (ii) below:

     (i) The Company may elect to make payment of any Defaulted Amounts to the Persons in
whose names the Notes (or their respective Predecessor Notes) are registered at the close of
business on a special record date for the payment of such Defaulted Amounts, which shall be
fixed in the following manner. The Company shall notify the Trustee in writing of the
amount of the Defaulted Amounts proposed to be paid on each Note and the date of the
proposed payment (which shall be not less than 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 Amounts or shall make arrangements satisfactory to the
Trustee for such deposit on or prior to the

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date of the proposed payment, such money when deposited to be held in trust for the
benefit of the Persons entitled to such Defaulted Amounts as in this clause provided.
Thereupon the Company shall fix a special record date for the payment of such Defaulted
Amounts which shall be not more than 15 days and not less than 10 days prior to the date of
the proposed payment, and not less than 10 days after the receipt by the Trustee of the
notice of the proposed payment. The Company shall promptly notify the Trustee in writing of
such special record date and the Trustee, in the name and at the expense of the Company,
shall cause notice of the proposed payment of such Defaulted Amounts and the special record
date therefor to be mailed, first-class postage prepaid, to each Holder at its address as it
appears in the Note Register, not less than 10 days prior to such special record date.
Notice of the proposed payment of such Defaulted Amounts and the special record date
therefor having been so mailed, such Defaulted Amounts shall be paid to the Persons in whose
names the Notes (or their respective Predecessor Notes) are registered at the close of
business on such special record date and shall no longer be payable pursuant to the
following clause (ii) of this Section 2.03(c).

     (ii) The Company may make payment of any Defaulted Amounts in any other lawful manner
not inconsistent with the requirements of any securities exchange or automated quotation
system on which the Notes 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, Authentication and Delivery of Notes. The Notes shall be signed in
the name and on behalf of the Company by the manual or facsimile signature of its Chief Executive
Officer, President, Chief Financial Officer, Treasurer, Secretary or any of its Executive or Senior
Vice Presidents.

     At any time and from time to time after the execution and delivery of this Indenture, the
Company may deliver Notes executed by the Company to the Trustee for authentication, together with
a Company Order for the authentication and delivery of such Notes, and the Trustee in accordance
with such Company Order shall authenticate and deliver such Notes, without any further action by
the Company hereunder.

     Only such Notes as shall bear thereon a certificate of authentication substantially in the
form set forth on the form of Note attached as Exhibit A hereto, executed manually by an authorized
signatory of the Trustee (or an authenticating agent appointed by the Trustee as provided by
Section 17.10), 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 Note
executed by the Company shall be conclusive evidence that the Note 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 Notes shall cease to be
such Officer before the Notes so signed shall have been authenticated and delivered by the Trustee,
or disposed of by the Company, such Notes nevertheless may be authenticated and

14

 

delivered or disposed of as though the Person who signed such Notes had not ceased to be such
Officer of the Company; and any Note may be signed on behalf of the Company by such persons as, at
the actual date of the execution of such Note, shall be the 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 Notes; Restrictions on Transfer;
Depositary. (a) The Company shall cause to be kept at the Corporate Trust Office a register (the
register maintained in such office or in any other office or agency of the Company designated
pursuant to Section 4.02, the “Note Register”) in which, subject to such reasonable regulations as
it may prescribe, the Company shall provide for the registration of Notes and of transfers of
Notes. Such register shall be in written form or in any form capable of being converted into
written form within a reasonable period of time. The Trustee is hereby initially appointed the
“Note Registrar” for the purpose of registering Notes and transfers of Notes as herein provided.
The Company may appoint one or more co-Note Registrars in accordance with Section 4.02.

     Upon surrender for registration of transfer of any Note to the Note 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 Notes of any authorized denominations and of
a like aggregate principal amount and bearing such restrictive legends as may be required by this
Indenture.

     Notes may be exchanged for other Notes of any authorized denominations and of a like aggregate
principal amount, upon surrender of the Notes to be exchanged at any such office or agency
maintained by the Company pursuant to Section 4.02. Whenever any Notes are so surrendered for
exchange, the Company shall execute, and the Trustee shall authenticate and deliver, the Notes that
the Holder making the exchange is entitled to receive, bearing registration numbers not
contemporaneously outstanding.

     All Notes presented or surrendered for registration of transfer or for exchange, purchase upon
a Fundamental Change in accordance with Article 15 or conversion shall (if so required by the
Company, the Trustee, the Note Registrar or any co-Note Registrar) be duly endorsed, or be
accompanied by a written instrument or instruments of transfer in form satisfactory to the Company
and duly executed, by the Holder thereof or its attorney-in-fact duly authorized in writing.

     No service charge shall be imposed by the Company, the Trustee, the Note Registrar or any
co-Note Registrar for any exchange or registration of transfer of Notes, but the Company or the
Trustee may require a Holder to pay a sum sufficient to cover any documentary, stamp or similar
issue or transfer tax required by law or permitted pursuant to Section 14.02(d) or Section
14.02(e).

     None of the Company, the Trustee, the Note Registrar or any co-Note Registrar shall be
required to exchange or register a transfer of (i) any Notes surrendered for conversion or, if a
portion of any Note is surrendered for conversion, such portion thereof surrendered for conversion
or (ii) any Notes, or a portion of any Note, surrendered for required purchase upon the occurrence
of a Fundamental Change (and not withdrawn) in accordance with Article 15.

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

     (b) So long as the Notes are eligible for book-entry settlement with the Depositary, unless
otherwise required by law, subject to the fourth paragraph from the end of Section 2.05(c), all
Notes shall be represented by one or more Notes in global form (each, a “Global Note”) registered
in the name of the Depositary or the nominee of the Depositary. The transfer and exchange of
beneficial interests in a Global Note that does not involve the issuance of a Physical Note, shall
be effected through the Depositary (but not the Trustee or the Custodian) in accordance with this
Indenture (including the restrictions on transfer set forth herein) and the procedures of the
Depositary therefor.

     (c) Every Note 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 Notes
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 the legend set forth below), unless such restrictions on transfer shall be eliminated or
otherwise 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 this Section 2.05(c) and Section 2.05(d), the term “transfer” encompasses any
sale, pledge, transfer or other disposition whatsoever of any Restricted Security.

     Until the date (the “Resale Restriction Termination Date”) that is the later of (1) the date
that is one year after the last date of original issuance of the Notes, or such other period of
time as permitted by Rule 144 under the Securities Act or any successor provision thereto, and (2)
such later date, if any, as may be required by applicable law, any certificate evidencing such Note
(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 Notes have been
transferred pursuant to a registration statement that has become or been declared effective under
the Securities Act and that continues to be effective at the time of such transfer, or sold
pursuant to the exemption from registration provided by Rule 144 or any similar provision then in
force under the Securities Act, or unless otherwise agreed by the Company in writing, with written
notice thereof to the Trustee):

     THIS SECURITY AND THE COMMON STOCK, IF ANY, ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND MAY NOT BE
OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE WITH THE FOLLOWING SENTENCE.
BY ITS ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST HEREIN, THE ACQUIRER:

     (1) REPRESENTS THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS A “QUALIFIED
INSTITUTIONAL BUYER” (WITHIN THE MEANING

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OF RULE 144A UNDER THE SECURITIES ACT) AND THAT IT EXERCISES SOLE INVESTMENT DISCRETION
WITH RESPECT TO EACH SUCH ACCOUNT,

     (2) REPRESENTS BY ITS PURCHASE AND HOLDING OF THIS SECURITY THAT (A) THE ACQUISITION
AND HOLDING OF THIS SECURITY AND POTENTIAL CONVERSION OF THIS SECURITY IS NOT MADE ON BEHALF
OF OR WITH “PLAN ASSETS” OF ANY PLAN SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME
SECURITY ACT OF 1974, AS AMENDED (“ERISA”), SECTION 4975 OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE “CODE”) OR ANY SIMILAR LAW OR (B) THE ACQUISITION AND HOLDING OF THIS
SECURITY AND POTENTIAL CONVERSION OF THIS SECURITY WILL NOT RESULT IN A NON-EXEMPT
PROHIBITED TRANSACTION UNDER SECTION 406 OF ERISA, SECTION 4975 OF THE CODE OR ANY SIMILAR
LAW, AND

     (3) AGREES FOR THE BENEFIT OF THE COMPANY THAT IT WILL NOT OFFER, SELL, PLEDGE OR
OTHERWISE TRANSFER THIS SECURITY OR ANY BENEFICIAL INTEREST HEREIN PRIOR TO THE DATE THAT IS
THE LATER OF (X) ONE YEAR AFTER THE LAST ORIGINAL ISSUE DATE HEREOF OR SUCH OTHER PERIOD OF
TIME AS PERMITTED BY RULE 144 UNDER THE SECURITIES ACT OR ANY SUCCESSOR PROVISION THERETO
AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE REQUIRED BY APPLICABLE LAW, EXCEPT:

     (A) TO TOWER GROUP, INC. (THE “COMPANY”) OR ANY SUBSIDIARY THEREOF, OR

     (B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BECOME EFFECTIVE UNDER THE
SECURITIES ACT, OR

     (C) TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE
SECURITIES ACT, OR

     (D) PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE
SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS
OF THE SECURITIES ACT.

     PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH (3)(D) ABOVE, THE COMPANY AND THE
TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER
EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING
MADE IN COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION
IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE
SECURITIES ACT.

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     No transfer of any Note prior to the Resale Restriction Termination Date will be registered by
the Note Registrar unless the applicable box on the Form of Assignment and Transfer has been
checked.

     Any Note (or security issued in exchange or substitution therefor) as to which such
restrictions on transfer shall have expired in accordance with their terms may, upon surrender of
such Note for exchange to the Note Registrar in accordance with the provisions of this Section
2.05, be exchanged for a new Note or Notes, of like tenor and aggregate principal amount, which
shall not bear the restrictive legend required by this Section 2.05(c) and shall not be assigned a
restricted CUSIP number. The Company shall be entitled to instruct the Custodian in writing to so
surrender any Global Note as to which such restrictions on transfer shall have expired in
accordance with their terms for exchange, and, upon such instruction, the Custodian shall so
surrender such Global Note for exchange; and any new Global Note so exchanged therefor shall not
bear the restrictive legend specified in this Section 2.05(c) and shall not be assigned a
restricted CUSIP number. The Company shall promptly notify the Trustee in writing upon the
occurrence of the Resale Restriction Termination Date and promptly after a registration statement,
if any, with respect to the Notes or any Common Stock issued upon conversion of the Notes has been
declared effective under the Securities Act.

     Notwithstanding any other provisions of this Indenture (other than the provisions set forth in
this Section 2.05(c)), a Global Note may not be transferred as a whole or in part except (i) by the
Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or
another nominee of the Depositary or by the Depositary or any such nominee to a successor
Depositary or a nominee of such successor Depositary and (ii) for transfers of portions of a Global
Note in certificated form made upon request of a member of, or a participant in, the Depositary
(for itself or on behalf of a beneficial owner) by written notice given to the Trustee by or on
behalf of the Depositary in accordance with customary procedures of the Depositary and in
compliance with this Section 2.05(c).

     The Depositary shall be a clearing agency registered under the Exchange Act. The Company
initially appoints The Depository Trust Company to act as Depositary with respect to each Global
Note. Initially, each Global Note shall be issued to the Depositary, registered in the name of
Cede & Co., as the nominee of the Depositary, and deposited with the Trustee as custodian for Cede
& Co.

     If (i) the Depositary notifies the Company at any time that the Depositary is unwilling or
unable to continue as depositary for the Global Notes and a successor depositary is not appointed
within 90 days, (ii) the Depositary ceases to be registered as a clearing agency under the Exchange
Act and a successor depositary is not appointed within 90 days or (iii) an Event of Default with
respect to the Notes has occurred and is continuing and a beneficial owner of the Notes requests
that a Physical Note be issued in respect of such beneficial owner’s interest in the Global Notes,
the Company shall execute, and the Trustee, upon receipt of an Officers’ Certificate and a Company
Order for the authentication and delivery of Notes, shall authenticate and deliver, (x) in the case
of clause (iii), a Physical Note to such beneficial owner in a principal amount equal to the
principal amount of such Note corresponding to such holder’s beneficial interest and (y) in the
case of clause (i) or (ii), Physical Notes to each beneficial owner of the

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related Global Notes (or a portion thereof) in an aggregate principal amount equal to the
aggregate principal amount of such Global Notes.

     Physical Notes issued in exchange for all or a part of the Global Note pursuant to this
Section 2.05(c) shall be registered in such names and in such authorized denominations as the
Depositary, pursuant to instructions from its direct or indirect participants or otherwise, shall
instruct the Trustee. Upon execution and authentication, the Trustee shall deliver such Physical
Notes to the Persons in whose names such Physical Notes are so registered.

     At such time as all interests in a Global Note have been converted, canceled, purchased upon
the occurrence of a Fundamental Change in accordance with Article 15 or transferred, such Global
Note shall be, upon receipt thereof, canceled by the Trustee in accordance with standing procedures
and existing instructions between the Depositary and the Custodian. At any time prior to such
cancellation, if any interest in a Global Note is exchanged for Physical Notes, converted,
canceled, purchased upon the occurrence of a Fundamental Change in accordance with Article 15 or
transferred to a transferee who receives Physical Notes therefor or any Physical Note is exchanged
or transferred for part of such Global Note, the principal amount of such Global Note shall, in
accordance with the standing procedures and instructions existing between the Depositary and the
Custodian, be appropriately reduced or increased, as the case may be, and an endorsement shall be
made on such Global Note, by the Trustee or the Custodian, at the direction of the Trustee, to
reflect such reduction or increase.

     Neither the Company, the Trustee nor any agent of the Company or the Trustee shall have any
responsibility or liability for any aspect of the records relating to or payments made on account
of beneficial ownership interests of a Global Note or maintaining, supervising or reviewing any
records relating to such beneficial ownership interests.

     (d) Until the Resale Restriction Termination Date, any stock certificate representing Common
Stock issued upon conversion of such Note shall bear a legend in substantially the following form
(unless the Note or such Common Stock has been transferred pursuant to a registration statement
that has become or been declared effective under the Securities Act and that continues to be
effective at the time of such transfer, or pursuant to the exemption from registration provided by
Rule 144 or any similar provision then in force under the Securities Act, or such Common Stock has
been issued upon conversion of Notes that have been transferred pursuant to a registration
statement that has become or been declared effective under the Securities Act and that continues to
be effective at the time of such transfer, or pursuant to the exemption from registration provided
by Rule 144 or any similar provision then in force under the Securities Act, or unless otherwise
agreed by the Company with written notice thereof to the Trustee and any transfer agent for the
Common Stock):

     THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
“SECURITIES ACT”), AND MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN
ACCORDANCE WITH THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST
HEREIN, THE ACQUIRER:

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     (1) REPRESENTS THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS A “QUALIFIED
INSTITUTIONAL BUYER” (WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT) AND THAT IT
EXERCISES SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT,

     (2) REPRESENTS BY ITS PURCHASE AND HOLDING OF THIS SECURITY THAT (A) THE ACQUISITION
AND HOLDING OF THIS SECURITY AND POTENTIAL CONVERSION OF THIS SECURITY IS NOT MADE ON BEHALF
OF OR WITH “PLAN ASSETS” OF ANY PLAN SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME
SECURITY ACT OF 1974, AS AMENDED (“ERISA”), SECTION 4975 OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE “CODE”) OR ANY SIMILAR LAW OR (B) THE ACQUISITION AND HOLDING OF THIS
SECURITY AND POTENTIAL CONVERSION OF THIS SECURITY WILL NOT RESULT IN A NON-EXEMPT
PROHIBITED TRANSACTION UNDER SECTION 406 OF ERISA, SECTION 4975 OF THE CODE OR ANY SIMILAR
LAW, AND

     (3) AGREES FOR THE BENEFIT OF THE COMPANY THAT IT WILL NOT OFFER, SELL, PLEDGE OR
OTHERWISE TRANSFER THIS SECURITY OR ANY BENEFICIAL INTEREST HEREIN PRIOR TO THE DATE THAT IS
THE LATER OF (X) ONE YEAR AFTER THE LAST ORIGINAL ISSUE DATE HEREOF OR SUCH OTHER PERIOD OF
TIME AS PERMITTED BY RULE 144 UNDER THE SECURITIES ACT OR ANY SUCCESSOR PROVISION THERETO
AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE REQUIRED BY APPLICABLE LAW, EXCEPT:

     (A) TO TOWER GROUP, INC. (THE “COMPANY”) OR ANY SUBSIDIARY THEREOF, OR

     (B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BECOME EFFECTIVE UNDER THE
SECURITIES ACT, OR

     (C) TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE
SECURITIES ACT, OR

     (D) PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE
SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS
OF THE SECURITIES ACT.

     PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH (3)(D) ABOVE, THE COMPANY AND THE
TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER
EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING
MADE IN COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION
IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE
SECURITIES ACT.

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     Any such Common Stock as to which such restrictions on transfer shall have expired in
accordance with their terms 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 aggregate number of shares of
Common Stock, which shall not bear the restrictive legend required by this Section 2.05(d).

     (e) Any Note or Common Stock issued upon the conversion of a Note that is acquired or
reacquired by the Company or any Affiliate thereof may not be resold by the Company or such
Affiliate except, in the case of resales by an Affiliate, (i) in transactions registered under the
Securities Act or (ii) if such Note or Common Stock would not constitute a “restricted security”
(as defined in Rule 144 under the Securities Act) upon such resale.

     (f) 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 Note including any transfers between or among
Depositary participants or beneficial owners of interests in any Global Note 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 such Note, and to
examine the same to determine substantial compliance as to form with the express requirements
hereof and of such Note (including, in the case of a transfer of a Physical Note, whether the
applicable box on the Form of Assignment and Transfer has been checked).

     (g) The Trustee shall not have any responsibility for any actions taken or not taken by the
Depositary in respect of Depositary participants or beneficial owners.

     Section 2.06. Mutilated, Destroyed, Lost or Stolen Notes. In case any Note 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 deliver, a new Note, bearing a registration number not contemporaneously outstanding, in
exchange and substitution for the mutilated Note, or in lieu of and in substitution for the Note so
destroyed, lost or stolen. In every case the applicant for a substituted Note 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 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 Note
and of the ownership thereof.

     The Trustee or such authenticating agent may authenticate any such substituted Note and
deliver the same upon the receipt of such security or indemnity as the Trustee, the Company and, if
applicable, such authenticating agent may require. Upon the issuance of any substitute Note, the
Company or the Trustee 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 Note that has matured, that has been surrendered for
purchase upon the occurrence of a Fundamental Change in accordance with Article 15 or that has been
surrendered for conversion in accordance with Article 14 shall

21

 

become mutilated or be destroyed, lost or stolen, the Company may, in its sole discretion,
instead of issuing a substitute Note, 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 Note), 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 for any loss, liability, cost or expense caused by
or connected with such substitution, and, in every case of destruction, loss or theft, evidence
satisfactory to the Company, the Trustee and, if applicable, any Paying Agent or Conversion Agent
evidence of their satisfaction of the destruction, loss or theft of such Note and of the ownership
thereof.

     Every substitute Note issued pursuant to the provisions of this Section 2.06 by virtue of the
fact that any Note is destroyed, lost or stolen shall constitute an additional contractual
obligation of the Company, whether or not the destroyed, lost or stolen Note 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 Notes duly issued
hereunder. To the extent permitted by law, all Notes shall be held and owned upon the express
condition that the foregoing provisions are exclusive with respect to the replacement or payment or
conversion or purchase of mutilated, destroyed, lost or stolen Notes 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 of negotiable instruments or
other securities without their surrender.

     Section 2.07. Temporary Notes. Pending the preparation of Physical Notes, the Company may
execute and the Trustee or an authenticating agent appointed by the Trustee shall, upon written
request of the Company, authenticate and deliver temporary Notes (printed or lithographed).
Temporary Notes shall be issuable in any authorized denomination, and substantially in the form of
the Physical Notes but with such omissions, insertions and variations as may be appropriate for
temporary Notes, all as may be determined by the Company. Every such temporary Note 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 Physical Notes.
Without unreasonable delay, the Company will execute and deliver to the Trustee or such
authenticating agent Physical Notes (other than any Global Note) and thereupon any or all temporary
Notes (other than any Global Note) may be surrendered in exchange therefor, at each office or
agency maintained by the Company pursuant to Section 4.02 and the Trustee or such authenticating
agent shall authenticate and deliver in exchange for such temporary Notes an equal aggregate
principal amount of Physical Notes. Such exchange shall be made by the Company at its own expense
and without any charge therefor. Until so exchanged, the temporary Notes shall in all respects be
entitled to the same benefits and subject to the same limitations under this Indenture as Physical
Notes authenticated and delivered hereunder.

     Section 2.08. Cancellation of Notes Paid, Converted, Etc. The Company shall cause all Notes
surrendered for the purpose of payment, purchase upon a Fundamental Change in accordance with
Article 15, repurchase pursuant to the penultimate sentence of Section 2.10, registration of
transfer or exchange or conversion, if surrendered to any Person other than the

22

 

Trustee (including any of the Company’s agents, Subsidiaries or Affiliates), to be surrendered
to the Trustee for cancellation. All Notes delivered to the Trustee shall be canceled promptly by
it, and no Notes shall be authenticated in exchange thereof except as expressly permitted by any of
the provisions of this Indenture. The Trustee shall dispose of canceled Notes in accordance with
its customary procedures. If the Company shall acquire any of the Notes, such acquisition shall
not operate as a redemption, repurchase or satisfaction of the indebtedness represented by such
Notes unless and until the same are delivered to the Trustee for cancellation.

     Section 2.09. CUSIP Numbers. The Company in issuing the Notes may use “CUSIP” numbers (if
then generally in use), and, if so, the Trustee shall use “CUSIP” numbers in all notices issued to
Holders as a convenience to such Holders; provided that any such notice may state that no
representation is made as to the correctness of such numbers either as printed on the Notes or on
such notice and that reliance may be placed only on the other identification numbers printed on the
Notes. The Company will promptly notify the Trustee in writing of any change in the “CUSIP”
numbers.

     Section 2.10. Additional Notes; Repurchases. The Company may, without the consent of the
Holders and notwithstanding Section 2.01, reopen this Indenture and issue additional Notes
hereunder with the same terms and with the same CUSIP number as the Notes initially issued
hereunder in an unlimited aggregate principal amount; provided that such additional Notes must be
part of the same issue as the Notes initially issued hereunder for U.S. federal income tax
purposes. Prior to the issuance of any such additional Notes, the Company shall deliver to the
Trustee a Company Order, an Officers’ Certificate and an Opinion of Counsel, such Officers’
Certificate and Opinion of Counsel to cover such matters, in addition to those required by Section
17.05, as the Trustee shall reasonably request. In addition, the Company may, to the extent
permitted by law, and directly or indirectly (regardless of whether such Notes are surrendered to
the Company), repurchase Notes in the open market or otherwise, whether by the Company or its
Subsidiaries or through a private or public tender or exchange offer or through counterparties to
private agreements, including by cash-settled swaps or other derivatives. The Company shall cause
any Notes so repurchased (other than Notes repurchased pursuant to cash-settled swaps or other
derivatives) to be surrendered to the Trustee for cancellation in accordance with Section 2.08.

     Section 2.11. Deemed Removal Of Restrictive Legend. At any time prior to or after the Resale
Restriction Termination Date, the Company shall be entitled to:

     (a) instruct the Trustee in writing to remove the restrictive legend on the Notes specified in
Section 2.05(c) by delivering to the Trustee the Free Transferability Certificate substantially in
the form attached as Exhibit B to this Indenture executed by an Officer of the Company, and, at
such time as (1) the Company has so delivered the Free Transferability Certificate to the Trustee
and (2) the Resale Restriction Termination Date has occurred, (A) such restrictive legend shall be
deemed removed from each Global Note and (B) the restricted CUSIP number and the restricted ISIN
number shall be deemed removed from each Global Note and replaced with the unrestricted CUSIP
number and the unrestricted ISIN number set forth therein, in each case without further action on
the part of Holders;

23

 

     (b) instruct the Trustee to notify the Holders that such restrictive legend has been removed
or deemed removed; and

     (c) instruct the Depositary to change the CUSIP number for the Notes to the unrestricted CUSIP
number for the Notes and to change the ISIN number for the Notes to the unrestricted ISIN number
for the Notes.

Any failure of the Company to comply with this Section 2.11 or of the Trustee to remove such
restrictive legend will not constitute a failure by the Company to comply with any of its covenants
or agreements set forth in this Indenture, subject to Section 4.06(e).

ARTICLE 3

Satisfaction and Discharge

     Section 3.01. Satisfaction and Discharge. This Indenture shall upon request of the Company
contained in an Officers’ Certificate cease to be of further effect, and the Trustee, at the
expense of the Company, shall execute proper instruments acknowledging satisfaction and discharge
of this Indenture, when (a) (i) all Notes theretofore authenticated and delivered (other than Notes
which have been destroyed, lost or stolen and which have been replaced or paid as provided in
Section 2.06) have been delivered to the Trustee for cancellation; or (ii) the Company has
deposited with the Trustee or delivered to Holders, as applicable, after the Notes have become due
and payable, whether at the Maturity Date, on any Fundamental Change Purchase Date, upon conversion
or otherwise, cash and, in the case of conversion, cash, shares of Common Stock or a combination of
cash and shares of Common Stock, as applicable, sufficient to pay all of the outstanding Notes or
satisfy the Company’s Conversion Obligation, as the case may be, and pay all other sums due and
payable under this Indenture by the Company; and (b) the Company has delivered to the Trustee an
Officers’ Certificate and an Opinion of Counsel, each stating that all conditions precedent herein
provided for relating to the satisfaction and discharge of this Indenture have been complied with.
Notwithstanding the satisfaction and discharge of this Indenture, the obligations of the Company to
the Trustee under Section 7.06 shall survive.

ARTICLE 4

Particular Covenants of the Company

     Section 4.01. Payment of Principal and Interest. The Company covenants and agrees that it
will cause to be paid the principal (including the Fundamental Change Purchase Price, if
applicable) of, and accrued and unpaid interest on, each of the Notes at the places, at the
respective times and in the manner provided herein and in the Notes.

     Section 4.02. Maintenance of Office or Agency. The Company will maintain in the Borough of
Manhattan, The City of New York, an office or agency where the Notes may be surrendered for
registration of transfer or exchange or for presentation for payment or required purchase upon the
occurrence of a Fundamental Change (“Paying Agent”) or for conversion

24

 

(“Conversion Agent”) and where notices and demands to or upon the Company in respect of the
Notes 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. 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 or the office or agency of the Trustee in the Borough of
Manhattan, The City of New York.

     The Company may also from time to time designate as co-Note Registrars one or more other
offices or agencies where the Notes may be presented or surrendered for any or all such purposes
and may from time to time rescind such designations; provided that no such designation or
rescission shall in any manner relieve the Company of its obligation to maintain an office or
agency in the Borough of Manhattan, The City of New York, for such purposes. The Company will give
prompt written notice to the Trustee of any such designation or rescission and of any change in the
location of any such other office or agency. The terms “Paying Agent” and “Conversion Agent”
include any such additional or other offices or agencies, as applicable, subject to the provisions
of Section 4.04.

     The Company hereby initially designates the Trustee as the Paying Agent, Custodian and
Conversion Agent and the Corporate Trust Office and the office or agency of the Trustee in the
Borough of Manhattan, The City of New York, each shall be considered as one such office or agency
of the Company for each of the aforesaid purposes.

     Section 4.03. 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 7.09, a Trustee, so that there shall at all times be a Trustee hereunder.

     Section 4.04. Provisions as to Paying Agent. (a) If the Company shall appoint a Paying Agent
other than the Trustee, the Company will cause such Paying Agent to execute and deliver to the
Trustee an instrument in which such agent shall agree with the Trustee, subject to the provisions
of this Section 4.04:

     (i) that it will hold all sums held by it as such agent for the payment of the
principal (including the Fundamental Change Purchase Price, if applicable) of, and accrued
and unpaid interest on, the Notes in trust for the benefit of the Holders of the Notes;

     (ii) that it will give the Trustee prompt written notice of any failure by the Company
to make any payment of the principal (including the Fundamental Change Purchase Price, if
applicable) of, and accrued and unpaid interest on, the Notes when the same shall be due and
payable; and

     (iii) 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 (including the Fundamental
Change Purchase Price, if applicable) of, or accrued and unpaid interest on, the

25

 

Notes, deposit with the Paying Agent a sum sufficient to pay such principal (including the
Fundamental Change Purchase Price, if applicable) or accrued and unpaid interest, and (unless such
Paying Agent is the Trustee) the Company will promptly notify the Trustee in writing of any failure
to take such action; provided that if such deposit is made on the due date, such deposit must be
received by the Paying Agent by 11:00 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 (including the Fundamental Change Purchase Price, if applicable) of, and accrued and
unpaid interest on, the Notes, set aside, segregate and hold in trust for the benefit of the
Holders of the Notes a sum sufficient to pay such principal (including the Fundamental Change
Purchase Price, if applicable) and accrued and unpaid interest so becoming due and will promptly
notify the Trustee in writing of any failure to take such action and of any failure by the Company
to make any payment of the principal (including the Fundamental Change Purchase Price, if
applicable) of, or accrued and unpaid interest on, the Notes when the same shall become due and
payable.

     (c) Anything in this Section 4.04 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, cause to be paid or deliver to the Trustee all sums or amounts held in trust by the
Company or any Paying Agent hereunder as required by this Section 4.04, such sums or amounts to be
held by the Trustee upon the trusts herein contained and upon such payment or delivery by the
Company or any Paying Agent to the Trustee, the Company or such Paying Agent shall be released from
all further liability but only with respect to such sums or amounts.

     (d) Any money deposited with the Trustee or any Paying Agent, or then held by the Company, in
trust for the payment of the principal (including the Fundamental Change Purchase Price, if
applicable) of, and accrued and unpaid interest on, any Note and remaining unclaimed for two years
after such principal (including the Fundamental Change Purchase Price, if applicable) or interest
has become due and payable shall be paid to the Company on request of the Company contained in an
Officers’ Certificate, or (if then held by the Company) shall be discharged from such trust; and
the Holder of such Note shall thereafter, as an unsecured general creditor, look only to the
Company for payment thereof, and all liability of the Trustee or such Paying Agent with respect to
such trust money, and all liability of the Company as trustee thereof, shall thereupon cease;
provided, however, that the Trustee or such Paying Agent, before being required to make any such
repayment, shall at the expense of the Company cause to be published once, in a newspaper published
in the English language, customarily published on each Business Day and of general circulation in
The Borough of Manhattan, The City of New York, notice that such money remains unclaimed and that,
after a date specified therein, which shall not be less than 30 days from the date of such
publication, any unclaimed balance of such money then remaining will be repaid to the Company.

     Section 4.05. Existence. Subject to Article 11, the Company will do or cause to be done all
things necessary to preserve and keep in full force and effect its corporate existence.

     Section 4.06. Rule 144A Information Requirement and Annual Reports. (a) At any time the
Company is not subject to Section 13 or 15(d) of the Exchange Act, the Company shall, so long as
any of the Notes or any shares of Common Stock delivered upon conversion thereof will,

26

 

at such time, constitute “restricted securities” within the meaning of Rule 144(a)(3) under
the Securities Act, promptly provide to the Trustee and shall, upon written request, provide to any
Holder, beneficial owner or prospective purchaser of such Notes or such shares of Common Stock the
information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act to
facilitate the resale of such Notes or such shares of Common Stock pursuant to Rule 144A. If Rule
144A is amended at any time after the date hereof, the Company shall take such further action as
any Holder or beneficial owner of such Notes or such Common Stock may reasonably request from time
to time to enable such Holder or beneficial owner to sell such Notes or such shares of Common Stock
in accordance with Rule 144A, as amended.

     (b) The Company shall file with the Trustee within 30 days after the same are required to be
filed with the Commission, copies of any documents or reports that the Company is required to file
with the Commission pursuant to Section 13 or 15(d) of the Exchange Act (giving effect to any grace
period provided by Rule 12b-25 under the Exchange Act). Any such document or report that the
Company files with the Commission via the Commission’s EDGAR system shall be deemed to be filed
with the Trustee for purposes of this Section 4.06(b) at the time such documents are filed via the
EDGAR system, provided that the Trustee shall have no responsibility whatsoever to determine if any
such filing has occurred.

     (c) Delivery of the reports and documents described in subsection (b) above 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 conclusively rely on an Officers’ Certificate).

     (d) If, at any time during the six-month period beginning on, and including, the date that is
six months after the last date of original issuance of the Notes, the Company fails to timely file
any document or report that it is required to file with the Commission pursuant to Section 13 or
15(d) of the Exchange Act, as applicable (after giving effect to all applicable grace periods
thereunder and other than reports on Form 8-K), or the Notes are not otherwise freely tradable by
Holders other than the Company’s Affiliates (as a result of restrictions pursuant to U.S.
securities law or the terms of this Indenture or the Notes), the Company shall pay Additional
Interest on the Notes at the rate of 0.25% per annum of the principal amount of the Notes
outstanding for each day during such period for which the Company’s failure to file has occurred
and is continuing or the Notes are not so freely tradable, which rate shall be increased an
additional 0.25% per annum following the 90th day on which such Additional Interest has accrued,
provided that the rate at which such Additional Interest accrues may in no event exceed 0.50% per
annum. As used in this Section 4.06(d), documents or reports that the Company is required to
“file” with the Commission pursuant to Section 13 or 15(d) of the Exchange Act does not include
documents or reports that the Company furnishes to the Commission pursuant to Section 13 or 15(d)
of the Exchange Act.

     (e) If, and for so long as, (i) the restrictive legend on the Notes specified in Section
2.05(c) has not been removed or deemed removed in accordance with customary procedures of the
Depository, (ii) the Notes are assigned a restricted CUSIP number or (iii) the Notes are not
otherwise freely tradable by Holders other than the Company’s Affiliates without restrictions
pursuant to U.S. securities law or the terms of this Indenture or the Notes (each, an “Additional

27

 

Interest Event”), in each case as of the 14th day after the first anniversary of the last date
of original issuance of the Notes, the Company shall pay Additional Interest on the Notes at a rate
equal to 0.25% per annum of the principal amount of Notes outstanding until such Additional
Interest Event is cured and no longer continuing, which rate shall be increased an additional 0.25%
per annum following the 90th day on which such Additional Interest has accrued, provided that the
rate at which such Additional Interest accrues may in no event exceed 0.50% per annum.

     (f) Any Additional Interest payable pursuant to Section 4.06(d) or Section 4.06(e) shall be
payable in arrears on each Interest Payment Date following accrual in the same manner as regular
interest on the Notes.

     (g) Any Additional Interest that is payable in accordance with Section 4.06(d) or Section
4.06(e) shall be in addition to, and not in lieu of, any Additional Interest that may be payable as
a result of the Company’s election pursuant to Section 6.03.

     (h) If Additional Interest is payable by the Company pursuant to Section 4.06(d) or Section
4.06(e), the Company shall deliver to the Trustee an Officers’ Certificate to that effect stating
(i) the amount of such Additional Interest that is payable and (ii) the date on which such
Additional Interest is payable. Unless and until a Responsible Officer of the Trustee receives at
the Corporate Trust Office such a certificate, the Trustee may assume without inquiry that no such
Additional Interest is payable. If the Company has paid Additional Interest directly to the
Persons entitled to it, the Company shall deliver to the Trustee an Officers’ Certificate setting
forth the particulars of such payment.

     Section 4.07. 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 that would
prohibit or forgive the Company from paying all or any portion of the principal of or interest on
the Notes as contemplated herein, wherever enacted, now or at any time hereafter in force, or that
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 4.08. Compliance Certificate; Statements as to Defaults. The Company shall deliver
to the Trustee within 120 days after the end of each fiscal year of the Company (beginning with the
fiscal year ending on December 31, 2010) an Officers’ Certificate stating whether or not the
signers thereof have knowledge of any failure by the Company to comply with all conditions and
covenants then required to be performed under this Indenture or any other Default or Event of
Default and, if so, specifying each such failure, Default or Event of Default and the nature
thereof.

     In addition, the Company shall deliver to the Trustee, as soon as possible, and in any event
within 30 days after the Company becomes aware of the occurrence of any Event of

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Default or Default, an Officers’ Certificate setting forth the details of such Event of
Default or Default, its status and the action that the Company proposes to take with respect
thereto.

     Section 4.09. Further Instruments and Acts. Upon request of the Trustee, the Company will
execute and deliver such further instruments and do such further acts as may be reasonably
necessary or proper to carry out more effectively the purposes of this Indenture.

ARTICLE 5

Lists of Holders and Reports by the Company and the Trustee

     Section 5.01. Lists of Holders. The Company covenants and agrees that it will furnish or
cause to be furnished to the Trustee, semi-annually, not more than 15 days after each March 1 and
September 1 in each year beginning with March 1, 2011, and at such other times as the Trustee may
request in writing, within 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 as of a date not more than 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 so long as the Trustee is acting as Note
Registrar.

     Section 5.02. Preservation and Disclosure of Lists. The Trustee shall preserve, in as
current a form as is reasonably practicable, all information as to the names and addresses of the
Holders contained in the most recent list furnished to it as provided in Section 5.01 or maintained
by the Trustee in its capacity as Note Registrar, if so acting. The Trustee may destroy any list
furnished to it as provided in Section 5.01 upon receipt of a new list so furnished.

ARTICLE 6

Defaults and Remedies

     Section 6.01. Events of Default. The following events shall be “Events of Default” with
respect to the Notes:

     (a) default in any payment of interest on any Note when due and payable, and such default
continues for a period of 30 days;

     (b) default in the payment of principal of any Note when due and payable on the Maturity Date,
upon any required purchase in connection with a Fundamental Change, upon declaration of
acceleration or otherwise;

     (c) failure by the Company to comply with its obligation to convert the Notes in accordance
with this Indenture upon exercise of a Holder’s conversion right and such failure continues for a
period of ten calendar days following the date on which the conversion consideration was payable or
deliverable, as the case may be, in connection with such conversion;

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     (d) failure by the Company to issue a Fundamental Change Company Notice in accordance with
Section 15.02(c) or notice of a specified corporate event in accordance with Section 14.01(b)(ii)
or 14.01(b)(iii), in each case when due and such failure continues for a period of ten calendar
days following the date on which such Fundamental Change Company Notice or such notice of a
specified corporate event was required to be delivered under this Indenture;

     (e) failure by the Company to comply with its obligations under Article 11;

     (f) failure by the Company for 60 days after written notice from the Trustee or the Holders of
at least 25% in principal amount of the Notes then outstanding has been received by the Company to
comply with any of its other agreements contained in the Notes or this Indenture;

     (g) default by the Company or any Subsidiary of the Company with respect to any mortgage,
agreement or other instrument under which there may be outstanding, or by which there may be
secured or evidenced, any indebtedness for money borrowed in excess of $20 million in the aggregate
of the Company and/or of any such Subsidiary, whether such indebtedness now exists or shall
hereafter be created (i) resulting in such indebtedness becoming or being declared due and payable
(unless such declaration has been rescinded) or (ii) constituting a failure to pay the principal of
or interest on any such indebtedness when due and payable at its stated maturity, upon required
repurchase, upon declaration of acceleration or otherwise;

     (h) a final judgment for the payment of $20 million or more (excluding any amounts covered by
insurance) rendered against the Company or any Significant Subsidiary of the Company, which
judgment is not discharged or stayed within 60 days after (i) the date on which the right to appeal
thereof has expired if no such appeal has commenced, or (ii) the date on which all rights to appeal
have been extinguished;

     (i) the Company or any Significant Subsidiary of the Company or any group of Subsidiaries of
the Company that in the aggregate would constitute a Significant Subsidiary shall commence a
voluntary case or other proceeding seeking liquidation, reorganization or other relief with respect
to the Company or such Significant Subsidiary or such group of Subsidiaries or its or their 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 such Significant Subsidiary or any such group of Subsidiaries or any substantial part of its
or their property, 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 it or
them, or shall make a general assignment for the benefit of creditors, or shall fail generally to
pay its or their debts as they become due; or

     (j) an involuntary case or other proceeding shall be commenced against the Company or any
Significant Subsidiary of the Company or any group of Subsidiaries of the Company that in the
aggregate would constitute a Significant Subsidiary seeking liquidation, reorganization or other
relief with respect to the Company or such Significant Subsidiary or such group of Subsidiaries or
its or their 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

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similar official of the Company or such Significant Subsidiary or such group of Subsidiaries
or any substantial part of its or their property, and such involuntary case or other proceeding
shall remain undismissed and unstayed for a period of 30 consecutive days.

     Section 6.02. Acceleration; Rescission and Annulment. In case one or more Events of Default
shall have occurred and be continuing (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), then, and in each and every such case (other than an Event of Default specified in Section
6.01(i) or Section 6.01(j) with respect to the Company or any of its Significant Subsidiaries or
any group of its Subsidiaries that in the aggregate would constitute a Significant Subsidiary),
unless the principal of all of the Notes shall have already become due and payable, either the
Trustee or the Holders of at least 25% in aggregate principal amount of the Notes then outstanding
determined in accordance with Section 8.04, by notice in writing to the Company (and to the Trustee
if given by Holders), may, and the Trustee at the request of Holders of at least 25% in aggregate
principal amount of the Notes then outstanding determined in accordance with Section 8.04 shall,
declare 100% of the principal of, and accrued and unpaid interest, if any, on, all the Notes to be
due and payable, and upon any such declaration the same shall become and shall automatically be
immediately due and payable, anything in this Indenture or in the Notes contained to the contrary
notwithstanding. If an Event of Default specified in Section 6.01(i) or Section 6.01(j) with
respect to the Company or any of its Significant Subsidiaries or any group of its Subsidiaries that
in the aggregate would constitute a Significant Subsidiary occurs and is continuing, 100% of the
principal of, and accrued and unpaid interest, if any, on, all Notes shall become and shall
automatically be immediately due and payable.

     The immediately preceding paragraph, however, is subject to the conditions that if, at any
time after the principal of the Notes 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 installments of accrued and unpaid interest upon all Notes and the principal of any and all
Notes that shall have become due otherwise than by acceleration (with interest on overdue
installments of accrued and unpaid interest to the extent that payment of such interest is
enforceable under applicable law, and on such principal at the rate borne by the Notes plus one
percent at such time) and amounts due to the Trustee pursuant to Section 7.06, and if
(1) rescission would not conflict with any judgment or decree of a court of competent jurisdiction
and (2) any and all existing Events of Default under this Indenture, other than the nonpayment of
the principal of and accrued and unpaid interest, if any, on Notes that shall have become due
solely by such acceleration, shall have been cured or waived pursuant to Section 6.09, then and in
every such case the Holders of a majority of the aggregate principal amount of the Notes then
outstanding, by written notice to the Company and to the Trustee, may rescind and annul any
consequence of any such Default or Events of Default, including such declaration and its
consequences, and any Event of Default arising therefrom shall be deemed to have been cured for
every purpose of this Indenture; but no such rescission and annulment shall extend to or shall
affect any subsequent Default or Event of Default, or shall impair any right consequent thereon.

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     Section 6.03. Additional Interest. Notwithstanding anything in this Indenture or in the
Notes to the contrary, if the Company so elects, the sole remedy during the 90-day period specified
below for an Event of Default relating to the Company’s failure to comply with its obligations as
set forth in Section 4.06(a) or Section 4.06(b) shall after the occurrence of such Event of Default
consist exclusively of the right to receive Additional Interest on the Notes at a rate equal to
0.25% per annum of the principal amount of the Notes outstanding for each day (x) during the 90-day
period beginning on, and including, the occurrence of such Event of Default and (y) on which such
Event of Default is continuing. Additional Interest payable pursuant to this Section 6.03 shall be
in addition to, not in lieu of, any Additional Interest payable pursuant to Section 4.06(d) or
Section 4.06(e). If the Company so elects, such Additional Interest shall be payable in the same
manner and on the same dates as regular interest on the Notes. On the 91st day after such Event of
Default (if such Event of Default is not cured or waived prior to such 91st day), the Notes shall
be subject to acceleration as provided in Section 6.02. For the avoidance of doubt, this Section
6.03 shall not affect the rights of Holders in the event of the occurrence of any Event of Default
other than an Event of Default described in the first sentence of this Section 6.03. In the event
the Company does not elect to pay Additional Interest following an Event of Default in accordance
with this Section 6.03, the Notes shall be immediately subject to acceleration as provided in
Section 6.02.

     In order to elect to pay Additional Interest as the sole remedy during the first 90 days after
the occurrence of any Event of Default described in the immediately preceding paragraph, the
Company must notify in writing all Holders of the Notes, the Trustee and the Paying Agent of such
election prior to the beginning of such 90-day period. Upon the Company’s failure to timely give
such notice, the Notes shall be immediately subject to acceleration as provided in Section 6.02.

     Section 6.04. Payments of Notes on Default; Suit Therefor. If an Event of Default described
in clause (a) or (b) of Section 6.01 shall have occurred, the Company shall, upon demand of the
Trustee, pay to the Trustee, for the benefit of the Holders of the Notes, the whole amount then due
and payable on the Notes for principal and interest, if any, with interest on any overdue principal
and interest, if any, at the rate borne by the Notes plus one percent at such time, and, in
addition thereto, such further amount as shall be sufficient to cover any amounts due to the
Trustee under Section 7.06. If the Company shall fail to pay such amounts forthwith upon such
demand, the Trustee, in its own name and as trustee of an express trust, may institute a judicial
proceeding for the collection of the sums so due and unpaid, may prosecute such proceeding to
judgment or final decree and may enforce the same against the Company or any other obligor upon the
Notes and collect the moneys adjudged or decreed to be payable in the manner provided by law out of
the property of the Company or any other obligor upon the Notes, wherever situated.

     In the event there shall be pending proceedings for the bankruptcy or for the reorganization
of the Company or any other obligor on the Notes 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
event of any other judicial proceedings relative to the Company or such

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other obligor upon the Notes, or to the creditors or property of the Company or such other
obligor, the Trustee, irrespective of whether the principal of the Notes 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 6.04, 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 accrued and unpaid interest, if any, in respect of the Notes,
and, in case of any judicial proceedings, to file such proofs of claim and other papers or
documents and to take such other actions as it may deem necessary or advisable in order to have the
claims of the Trustee (including any claim for the reasonable compensation, expenses, disbursements
and advances of the Trustee, its agents and counsel) and of the Holders allowed in such judicial
proceedings relative to the Company or any other obligor on the Notes, 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
to the Trustee under Section 7.06; and any receiver, assignee or trustee in bankruptcy or
reorganization, liquidator, custodian or similar official is hereby authorized by each of the
Holders to make such payments to the Trustee, as administrative expenses, and, in the event that
the Trustee shall consent to the making of such payments directly to the Holders, to pay to the
Trustee any amount due it for reasonable compensation, expenses, advances and disbursements,
including agents and counsel fees, and including any other amounts due to the Trustee under Section
7.06, 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
that the Holders of the Notes may be entitled to receive in such proceedings, whether in
liquidation or under any plan of reorganization or arrangement or otherwise.

     Nothing herein contained shall be deemed to authorize the Trustee to authorize or consent to
or accept or adopt on behalf of any Holder any plan of reorganization, arrangement, adjustment or
composition affecting such Holder or the rights of any Holder thereof, or to authorize the Trustee
to vote in respect of the claim of any Holder in any such proceeding.

     All rights of action and of asserting claims under this Indenture, or under any of the Notes,
may be enforced by the Trustee without the possession of any of the Notes, 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 Notes.

     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 Notes, and it shall not be necessary to make any Holders of the
Notes parties to any such proceedings.

     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 any waiver pursuant to

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Section 6.09 or any rescission and annulment pursuant to Section 6.02 or for any other reason
or shall have been determined adversely to the Trustee, then and in every such case the Company,
the Holders, and the Trustee shall, subject to any determination in such proceeding, be restored
respectively to their several positions and rights hereunder, and all rights, remedies and powers
of the Company, the Holders, and the Trustee shall continue as though no such proceeding had been
instituted.

     Section 6.05. Application of Monies Collected by Trustee. Any monies collected by the
Trustee pursuant to this Article 6 with respect to the Notes 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 Notes, 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 7.06;

     Second, in case the principal of the outstanding Notes shall not have become due and be
unpaid, to the payment of interest on, and any cash due upon conversion of, the Notes in default in
the order of the date due of the payments of such interest and cash due upon conversion, as the
case may be, with interest (to the extent that such interest has been collected by the Trustee)
upon such overdue payments at the rate borne by the Notes at such time, such payments to be made
ratably to the Persons entitled thereto;

     Third, in case the principal of the outstanding Notes shall have become due, by declaration or
otherwise, and be unpaid to the payment of the whole amount (including, if applicable, the payment
of the Fundamental Change Purchase Price and any cash due upon conversion) then owing and unpaid
upon the Notes for principal and interest, if any, 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 Notes at such time plus one percent, and in case such monies
shall be insufficient to pay in full the whole amounts so due and unpaid upon the Notes, then to
the payment of such principal (including, if applicable, the Fundamental Change Purchase Price and
the cash due upon conversion) 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 Note over any other Note, ratably to the aggregate of such
principal (including, if applicable, the Fundamental Change Purchase Price and any cash due upon
conversion) and accrued and unpaid interest; and

     Fourth, to the payment of the remainder, if any, to the Company.

     Section 6.06. Proceedings by Holders. Except to enforce the right to receive payment of
principal (including, if applicable, the Fundamental Change Purchase Price) or interest, when due,
or the right to receive payment or delivery of the consideration due upon conversion, no Holder of
any Note shall have any right by virtue of or by availing of 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:

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     (a) such Holder previously shall have given to the Trustee written notice of an Event of
Default and of the continuance thereof, as herein provided;

     (b) Holders of at least 25% in aggregate principal amount of the Notes then outstanding shall
have made written request upon the Trustee to institute such action, suit or proceeding in its own
name as Trustee hereunder;

     (c) such Holders shall have offered to the Trustee such security or indemnity reasonably
satisfactory to it against any loss, liability or expense to be incurred therein or thereby;

     (d) the Trustee for 60 days after its receipt of such notice, request and offer of security or
indemnity, shall have neglected or refused to institute any such action, suit or proceeding; and

     (e) no direction that, in the opinion of the Trustee, is inconsistent with such written
request shall have been given to the Trustee by the Holders of a majority of the aggregate
principal amount of the Notes then outstanding within such 60-day period pursuant to Section 6.09,

it being understood and intended, and being expressly covenanted by the taker and Holder of every
Note with every other taker and Holder and the Trustee that no one or more Holders shall have any
right in any manner whatever by virtue of or by availing of any provision of this Indenture to
affect, disturb or prejudice the rights of any other Holder (it being understood that the Trustee
does not have an affirmative duty to ascertain whether or not such actions or forbearances are
unduly prejudicial to such Holders), 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 (except as otherwise provided
herein). For the protection and enforcement of this Section 6.06, each and every Holder 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 Note, the right
of any Holder to receive payment or delivery, as the case may be, of (x) the principal (including
the Fundamental Change Purchase Price, if applicable) of, (y) accrued and unpaid interest, if any,
on and (z) the consideration due upon conversion of, such Note, on or after the respective due
dates expressed or provided for in such Note or in this Indenture, or to institute suit for the
enforcement of any such payment or delivery, as the case may be, on or after such respective dates
against the Company shall not be impaired or affected without the consent of such Holder.

     Section 6.07. 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
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.

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     Section 6.08. Remedies Cumulative and Continuing. Except as provided in the last
paragraph of Section 2.06, all powers and remedies given by this Article 6 to the Trustee or to the
Holders 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 Notes,
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 Notes to exercise any right or power accruing upon any Default or Event of Default shall
impair any such right or power, or shall be construed to be a waiver of any such Default or Event
of Default or any acquiescence therein; and, subject to the provisions of Section 6.06, every power
and remedy given by this Article 6 or by law to the Trustee or to the Holders may be exercised from
time to time, and as often as shall be deemed expedient, by the Trustee or by the Holders.

     Section 6.09. Direction of Proceedings and Waiver of Defaults by Majority of Holders. The
Holders of a majority of the aggregate principal amount of the Notes at the time outstanding
determined in accordance with Section 8.04 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 with respect to Notes. The Holders of a majority in aggregate
principal amount of the Notes at the time outstanding determined in accordance with Section 8.04
may on behalf of the Holders of all of the Notes, by written notice to the Company and the Trustee,
waive any past Default or Event of Default hereunder except (i) a default in the payment of accrued
and unpaid interest, if any, on, or the principal (including any Fundamental Change Purchase Price)
of, the Notes when due that has not been cured pursuant to the provisions of Section 6.01, (ii) a
failure by the Company to pay or deliver, as the case may be, the consideration due upon conversion
of the Notes or (iii) a default in respect of a covenant or provision hereof which under Article 10
cannot be modified or amended without the consent of each Holder of an outstanding Note affected.
Upon any such waiver the Company, the Trustee and the Holders of the Notes 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 6.09, said Default
or Event of Default shall for all purposes of the Notes 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 6.10. Notice of Defaults. The Trustee shall, within 90 days after the occurrence of
a Default of which a Responsible Officer has actual knowledge mail to all Holders as the names and
addresses of such Holders appear upon the Note Register, notice of all Defaults actually 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 a Default in the payment of the principal of
(including the Fundamental Change Purchase Price, if applicable), or accrued and unpaid interest
on, any of the Notes or a Default in the payment or delivery, as the case may be, of the
consideration due upon conversion of the Notes, the Trustee shall be protected in withholding such
notice if and so long as it in good faith determines that the withholding of such notice is in the
interests of the Holders.

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     Section 6.11. Undertaking to Pay Costs. All parties to this Indenture agree, and each Holder
of any Note 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 6.11
(to the extent permitted by law) shall not apply to any suit instituted by the Trustee, to any suit
instituted by any Holder, or group of Holders, holding in the aggregate more than 25% of the
principal amount of the Notes at the time outstanding determined in accordance with Section 8.04,
or to any suit instituted by any Holder for the enforcement of the payment of the principal of or
accrued and unpaid interest, if any, on any Note (including, but not limited to, the Fundamental
Change Purchase Price with respect to the Notes being purchased as provided in Article 15 of this
Indenture) on or after the due date expressed or provided for in such Note or to any suit for the
enforcement of the right to convert any Note in accordance with the provisions of Article 14.

ARTICLE 7

Concerning the Trustee

     Section 7.01. Duties and Responsibilities of Trustee. The Trustee, prior to the occurrence
of an Event of Default and after the curing or waiver of all Events of Default that 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 that 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 such person’s own affairs; provided that if an Event of Default
occurs and is continuing, the Trustee will be under no obligation to exercise any of the rights or
powers under this Indenture at the request or direction of any of the Holders unless such Holders
have offered to the Trustee indemnity or security satisfactory to it against the losses, expenses
and liabilities that might be incurred by it in compliance with such request or direction.

     No provision of this Indenture shall be construed to relieve the Trustee from liability for
its own grossly negligent action, its own grossly 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 that may have occurred:

     (i) the duties and obligations of the Trustee shall be determined solely by the express
provisions of this Indenture, 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 against the Trustee; and

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     (ii) in the absence of bad faith and willful misconduct 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 that 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 any 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 it shall be proved that the Trustee was
grossly 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 direction of the Holders of not less than a majority of the
aggregate principal amount of the Notes at the time outstanding determined as provided in Section
8.04 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) 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;

     (e) 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-Note Registrar with respect to the
Notes;

     (f) 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, unless such
Responsible Officer of the Trustee had actual knowledge of such event;

     (g) in the absence of written investment direction from the Company, all cash received by the
Trustee shall be placed in a non-interest bearing trust account, and in no event shall the Trustee
be liable for the selection of investments or for investment losses incurred thereon or for losses
incurred as a result of the liquidation of any such investment prior to its maturity date or the
failure of the party directing such investments prior to its maturity date or the failure of the
party directing such investment to provide timely written investment direction, and the Trustee
shall have no obligation to invest or reinvest any amounts held hereunder in the absence of such
written investment direction from the Company; and

     (h) in the event that the Trustee is also acting as Custodian, Note Registrar, Paying Agent,
Conversion Agent, Bid Solicitation Agent or transfer agent hereunder, the rights and protections
afforded to the Trustee pursuant to this Article 7 shall also be afforded to such

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Custodian, Note Registrar, Paying Agent, Conversion Agent, Bid Solicitation Agent or transfer
agent.

     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.

     Section 7.02. Reliance on Documents, Opinions, Etc. Except as otherwise provided in Section
7.01:

     (a) the Trustee may conclusively rely and shall be fully protected in acting upon any
resolution, certificate, statement, instrument, opinion, report, notice, request, consent, order,
bond, Note, coupon or other paper or document 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 (unless other evidence in respect thereof be
herein specifically prescribed); and any Board Resolution 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 selection and require an opinion of counsel
and any advice of such counsel 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 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, in its discretion, 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 at the
expense of the Company and shall incur no liability of any kind by reason of such inquiry or
investigation;

     (e) the Trustee may execute any of the trusts or powers hereunder or perform any duties
hereunder either directly or by or through agents, custodians, nominees or attorneys and the
Trustee shall not be responsible for any misconduct or negligence on the part of any agent,
custodian, nominee or attorney appointed by it with due care hereunder;

     (f) the permissive rights of the Trustee enumerated herein shall not be construed as duties;

     (g) in no event shall the Trustee be liable for any consequential loss or damage of any kind
whatsoever (including but not limited to lost profits), even if the Trustee has been advised of the
likelihood of such loss or damage and regardless of the form of action other than any such loss or
damage caused by the Trustee’s willful misconduct or gross negligence. The Trustee shall not be
charged with knowledge of any Default or Event of Default with respect to the Notes,

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unless either
(1) a Responsible Officer shall have actual knowledge of such Default or Event of
Default or (2) written notice of such Default or Event of Default shall have been given to the
Trustee by the Company or by any Holder of the Notes;

     (h) the Trustee shall not be required to give any bond or surety in respect of the performance
of its powers and duties hereunder; and

     (i) the Trustee may request that the Company deliver a certificate setting forth the names of
individuals and/or titles of officers authorized at such time to take specified actions pursuant to
this Indenture.

     Section 7.03. No Responsibility for Recitals, Etc. The recitals contained herein and in the
Notes (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
Notes. The Trustee shall not be accountable for the use or application by the Company of any Notes
or the proceeds of any Notes authenticated and delivered by the Trustee in conformity with the
provisions of this Indenture.

     Section 7.04. Trustee, Paying Agents, Conversion Agents, Bid Solicitation Agent or Note
Registrar May Own Notes. The Trustee, any Paying Agent, any Conversion Agent, Bid Solicitation
Agent or Note Registrar, in its individual or any other capacity, may become the owner or pledgee
of Notes with the same rights it would have if it were not the Trustee, Paying Agent, Conversion
Agent, Bid Solicitation Agent or Note Registrar.

     Section 7.05. Monies and Shares of Common Stock to Be Held in Trust. All monies and shares
of Common Stock 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 and shares of Common Stock 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 or shares of Common Stock
received by it hereunder except as may be agreed in writing from time to time by the Company and
the Trustee.

     Section 7.06. Compensation and Expenses of Trustee. The Company covenants and agrees to pay
to the Trustee from time to time, and the Trustee shall receive 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 in writing
between the Trustee and the Company, 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 in any capacity thereunder
(including the reasonable compensation and the expenses and disbursements of its agents and counsel
and of all Persons not regularly in its employ) except any such expense, disbursement or advance as
shall have been caused by its gross negligence, willful misconduct or bad faith. The Company also
covenants to indemnify the Trustee in any capacity under this Indenture and any other document or
transaction entered into in connection herewith and its agents and any authenticating agent for,
and to hold them harmless against, any loss, claim, damage, liability or expense incurred without
gross negligence, willful misconduct or

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bad faith on the part of the Trustee, its officers,
directors, agents or employees, or such 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, a Holder
or any other Person) of liability in the premises. The obligations of the Company under this
Section 7.06 to compensate or indemnify the Trustee and to pay or reimburse the Trustee for
expenses, disbursements and advances shall be secured by a senior claim to which the Notes are
hereby made subordinate on all money or property held or collected by the Trustee, except, subject
to the effect of Section 6.05, funds held in trust herewith for the benefit of the Holders of
particular Notes. The Trustee’s right to receive payment of any amounts due under this Section
7.06 shall not be subordinate to any other liability or indebtedness of the Company. The
obligation of the Company under this Section 7.06 shall survive the satisfaction and discharge of
this Indenture and the earlier resignation or removal of the Trustee. The Company need not pay for
any settlement made without its consent, which consent shall not be unreasonably withheld. The
indemnification provided in this Section 7.06 shall extend to the officers, directors, agents and
employees of the Trustee.

     Without prejudice to any other rights available to the Trustee under applicable law, when the
Trustee and its agents and any authenticating agent incur expenses or render services after an
Event of Default specified in Section 6.01(i) or Section 6.01(j) occurs, the expenses and the
compensation for the services are intended to constitute expenses of administration under any
bankruptcy, insolvency or similar laws.

     Section 7.07. Officers’ Certificate as Evidence. Except as otherwise provided in Section
7.01, 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 gross negligence, willful misconduct, recklessness and bad faith
on the part of the Trustee, be deemed to be conclusively proved and established by an Officers’
Certificate delivered to the Trustee, and such Officers’ Certificate, in the absence of gross
negligence, willful misconduct, recklessness and bad faith on the part of the Trustee, shall be
full warrant to the Trustee for any action taken or omitted by it under the provisions of this
Indenture upon the faith thereof.

     Section 7.08. 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. 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, 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, it shall resign immediately in the manner and with the effect
hereinafter specified in this Article.

     Section 7.09. Resignation or Removal of Trustee. (a) The Trustee may at any time resign by
giving written notice of such resignation to the Company and by mailing notice thereof to the
Holders at their addresses as they shall appear on the Note Register. Upon receiving such notice

41

 

of resignation, the Company shall promptly 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 resigning Trustee and one copy to the successor trustee. If no successor trustee
shall have been so appointed and have accepted appointment within sixty days after the mailing of
such notice of resignation to the Holders, the resigning Trustee may, upon ten Business Days’
notice to the Company and the Holders, petition, at the expense of the Company, any court of
competent jurisdiction for the appointment of a successor trustee, or any Holder who has been a
bona fide holder of a Note or Notes for at least six months may, subject to the provisions of
Section 6.11, 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 cease to be eligible in accordance with the provisions of Section
7.08 and shall fail to resign after written request therefor by the Company or by any such
Holder, or

     (ii) the Trustee shall become incapable of acting, or shall be adjudged a 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 either case, the Company may by a Board Resolution 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 6.11, any Holder who has been a bona
fide holder of a Note or Notes 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. 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 Notes at the time
outstanding, as determined in accordance with Section 8.04, may at any time remove the Trustee and
nominate a successor trustee that shall be deemed appointed as successor trustee unless within ten
days after notice to the Company of such nomination the Company objects thereto, in which case the
Trustee so removed or any Holder, upon the terms and conditions and otherwise as in Section 7.09(a)
provided, may petition, at the expense of the Company, any court of competent jurisdiction for an
appointment of a successor trustee.

     (d) Any resignation or removal of the Trustee and appointment of a successor trustee pursuant
to any of the provisions of this Section 7.09 shall become effective upon acceptance of appointment
by the successor trustee as provided in Section 7.10.

     Section 7.10. Acceptance by Successor Trustee. Any successor trustee appointed as provided
in Section 7.09 shall execute, acknowledge and deliver to the Company and to its predecessor
trustee an instrument accepting such appointment hereunder, and thereupon the

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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 amounts then due it
pursuant to the provisions of Section 7.06, 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 senior claim to which the Notes are hereby
made subordinate on all money or property held or collected by such trustee as such, except for
funds held in trust for the benefit of Holders of particular Notes, to secure any amounts then due
it pursuant to the provisions of Section 7.06.

     No successor trustee shall accept appointment as provided in this Section 7.10 unless at the
time of such acceptance such successor trustee shall be eligible under the provisions of Section
7.08.

     Upon acceptance of appointment by a successor trustee as provided in this Section 7.10, each
of the Company and the successor trustee, at the written direction and at the expense of the
Company shall mail or cause to be mailed notice of the succession of such trustee hereunder to the
Holders at their addresses as they shall appear on the Note Register. If the Company fails to mail
such notice within ten 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 7.11. Succession by Merger, Etc. Any corporation or other entity into which the
Trustee may be merged or converted or with which it may be consolidated, or any corporation or
other entity resulting from any merger, conversion or consolidation to which the Trustee shall be a
party, or any corporation or other entity succeeding to all or substantially all of the corporate
trust business of the Trustee (including the administration of 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 corporation or other
entity succeeding to all or substantially all of the corporate trust business of the Trustee such
corporation or other entity shall be eligible under the provisions of Section 7.08.

     In case at the time such successor to the Trustee shall succeed to the trusts created by this
Indenture, any of the Notes 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 Notes so
authenticated; and in case at that time any of the Notes shall not have been authenticated, any
successor to the Trustee or an authenticating agent appointed by such successor trustee may
authenticate such Notes either in the name of any predecessor trustee hereunder or in the name of
the successor trustee; and in all such cases such certificates shall have the full force which it
is anywhere in the Notes or in this Indenture provided that the certificate of the Trustee shall
have; provided, however, that the right to adopt the certificate of authentication of any
predecessor trustee or to authenticate Notes in the name of any predecessor trustee shall apply
only to its successor or successors by merger, conversion or consolidation.

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     Section 7.12. Trustee’s Application for Instructions from the Company. Any application by
the Trustee for written instructions from the Company (other than with regard to any action
proposed to be taken or omitted to be taken by the Trustee that affects the rights of the Holders
of the Notes under this Indenture) may, at the option of the Trustee, set forth in writing any
action proposed to be taken or omitted by the Trustee under this Indenture and the date on and/or
after which such action shall be taken or such omission shall be effective. The Trustee shall not
be liable for any action taken by, or omission of, the Trustee in accordance with a proposal
included in such application on or after the date specified in such application (which date shall
not be less than three Business Days after the date any officer that the Company has indicated to
the Trustee should receive such application actually receives such application, unless any such
officer shall have consented in writing to any earlier date), unless, prior to taking any such
action (or the effective date in the case of any omission), the Trustee shall have received written
instructions in accordance with this Indenture in response to such application specifying the
action to be taken or omitted.

ARTICLE 8

Concerning the Holders

     Section 8.01. Action by Holders. Whenever in this Indenture it is provided that the Holders
of a specified percentage of the aggregate principal amount of the Notes 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 Holders in person or by agent or proxy appointed in
writing, or (b) by the record of the Holders voting in favor thereof at any meeting of Holders duly
called and held in accordance with the provisions of Article 9, or (c) by a combination of such
instrument or instruments and any such record of such a meeting of Holders. Whenever the Company
or the Trustee solicits the taking of any action by the Holders of the Notes, the Company or the
Trustee may fix, but shall not be required to, in advance of such solicitation, a date as the
record date for determining Holders entitled to take such action. The record date if one is
selected shall be not more than fifteen days prior to the date of commencement of solicitation of
such action.

     Section 8.02. Proof of Execution by Holders. Subject to the provisions of Section 7.01,
Section 7.02 and Section 9.05, proof of the execution of any instrument by a Holder 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 Notes shall be proved by the Note Register or by a certificate of the Note Registrar.
The record of any Holders’ meeting shall be proved in the manner provided in Section 9.06.

     Section 8.03. Who Are Deemed Absolute Owners. The Company, the Trustee, any authenticating
agent, any Paying Agent, any Conversion Agent and any Note Registrar may deem the Person in whose
name a Note shall be registered upon the Note Register to be, and may treat it as, the absolute
owner of such Note (whether or not such Note shall be overdue and notwithstanding any notation of
ownership or other writing thereon made by any Person other

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than the Company or any Note Registrar)
for the purpose of receiving payment of or on account
of the principal of and (subject to Section 2.03) accrued and unpaid interest on such Note,
for conversion of such Note and for all other purposes; and neither the Company nor the Trustee nor
any Paying Agent nor any Conversion Agent nor any Note Registrar shall be affected by any notice to
the contrary. All such payments or deliveries so made to any Holder for the time being, or upon
its order, shall be valid, and, to the extent of the sums or shares of Common Stock so paid or
delivered, effectual to satisfy and discharge the liability for monies payable or shares
deliverable upon any such Note. Notwithstanding anything to the contrary in this Indenture or the
Notes following an Event of Default, any Holder of a beneficial interest in a Global Note may
directly enforce against the Company, without the consent, solicitation, proxy, authorization or
any other action of the Depositary or any other Person, such Holder’s right to exchange such
beneficial interest for a Note in certificated form in accordance with the provisions of this
Indenture.

     Section 8.04. Company-Owned Notes Disregarded. In determining whether the Holders of the
requisite aggregate principal amount of Notes have concurred in any direction, consent, waiver or
other action under this Indenture, Notes that are owned by the Company or by any Person directly or
indirectly controlling or controlled by or under direct or indirect common control with the Company
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
conclusively relying on any such direction, consent, waiver or other action only Notes that a
Responsible Officer actually knows are so owned shall be so disregarded. Notes so owned that have
been pledged in good faith may be regarded as outstanding for the purposes of this Section 8.04 if
the pledgee shall establish to the satisfaction of the Trustee the pledgee’s right to so act with
respect to such Notes and that the pledgee is not the Company or a Person directly or indirectly
controlling or controlled by or under direct or indirect common control with the Company. In the
case of a dispute as to such right, any decision by the Trustee taken upon the advice of counsel
shall be full protection to the Trustee. Upon request of the Trustee, the Company shall furnish to
the Trustee promptly an Officers’ Certificate listing and identifying all Notes, 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 7.01, 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 Notes not listed
therein are outstanding for the purpose of any such determination.

     Section 8.05. Revocation of Consents; Future Holders Bound. At any time prior to (but not
after) the evidencing to the Trustee, as provided in Section 8.01, of the taking of any action by
the Holders of the percentage of the aggregate principal amount of the Notes specified in this
Indenture in connection with such action, any Holder of a Note that is shown by the evidence to be
included in the Notes 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 8.02, revoke such action so far as concerns such Note. Except as aforesaid, any such
action taken by the Holder of any Note shall be conclusive and binding upon such Holder and upon
all future Holders and owners of such Note and of any Notes issued in exchange or substitution
therefor or upon registration of transfer thereof, irrespective of whether any notation in regard
thereto is made upon such Note or any Note issued in exchange or substitution therefor or upon
registration of transfer thereof.

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ARTICLE 9

Holders’ Meetings

     Section 9.01. Purpose of Meetings. A meeting of Holders may be called at any time and from
time to time pursuant to the provisions of this Article 9 for any of the following purposes:

     (a) 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
Holders pursuant to any of the provisions of Article 6;

     (b) to remove the Trustee and nominate a successor trustee pursuant to the provisions of
Article 7;

     (c) to consent to the execution of an indenture or indentures supplemental hereto pursuant to
the provisions of Section 10.02; or

     (d) to take any other action authorized to be taken by or on behalf of the Holders of any
specified aggregate principal amount of the Notes under any other provision of this Indenture or
under applicable law.

     Section 9.02. Call of Meetings by Trustee. The Trustee may at any time call a meeting of
Holders to take any action specified in Section 9.01, to be held at such time and at such place as
the Trustee shall determine. Notice of every meeting of the Holders, 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 8.01, shall be mailed to Holders of such
Notes at their addresses as they shall appear on the Note Register. Such notice shall also be
mailed to the Company. Such notices shall be mailed not less than twenty nor more than ninety days
prior to the date fixed for the meeting.

     Any meeting of Holders shall be valid without notice if the Holders of all Notes then
outstanding are present in person or by proxy or if notice is waived before or after the meeting by
the Holders of all Notes then 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 9.03. Call of Meetings by Company or Holders. In case at any time the Company,
pursuant to a Board Resolution, or the Holders of at least 10% of the aggregate principal amount of
the Notes then outstanding, shall have requested the Trustee to call a meeting of Holders, 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 20 days after receipt of
such request, then the Company or such Holders may determine the time and the place for such
meeting and may call such meeting to take any action authorized in Section 9.01, by mailing notice
thereof as provided in Section 9.02.

     Section 9.04. Qualifications for Voting. To be entitled to vote at any meeting of Holders a
Person shall (a) be a Holder of one or more Notes 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

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Notes 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 Holders 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 9.05. Regulations. Notwithstanding any other provisions of this Indenture, the
Trustee may make such reasonable regulations as it may deem advisable for any meeting of Holders,
in regard to proof of the holding of Notes 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 Holders as provided in Section 9.03,
in which case the Company or the Holders 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 Notes represented
at the meeting and entitled to vote at the meeting.

     Subject to the provisions of Section 8.04, at any meeting of Holders each Holder or
proxyholder shall be entitled to one vote for each $1,000 principal amount of Notes held or
represented by him; provided, however, that no vote shall be cast or counted at any meeting in
respect of any Note 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
Notes held by it or instruments in writing as aforesaid duly designating it as the proxy to vote on
behalf of other Holders. Any meeting of Holders duly called pursuant to the provisions of Section
9.02 or Section 9.03 may be adjourned from time to time by the Holders of a majority of the
aggregate principal amount of Notes represented at the meeting, whether or not constituting a
quorum, and the meeting may be held as so adjourned without further notice.

     Section 9.06. Voting. The vote upon any resolution submitted to any meeting of Holders shall
be by written ballot on which shall be subscribed the signatures of the Holders or of their
representatives by proxy and the outstanding principal amount of the Notes 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 Holders 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 9.02. The record shall show the principal amount of
the Notes voting in favor of 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.

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     Any record so signed and verified shall be conclusive evidence of the matters therein stated.

     Section 9.07. No Delay of Rights by Meeting. Nothing contained in this Article 9 shall be
deemed or construed to authorize or permit, by reason of any call of a meeting of Holders 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 Holders under
any of the provisions of this Indenture or of the Notes.

ARTICLE 10

Supplemental Indentures

     Section 10.01. Supplemental Indentures Without Consent of Holders. The Company, when
authorized by the resolutions of the Board of Directors and the Trustee, at the Company’s expense,
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) to cure any ambiguity, omission, defect or inconsistency;

     (b) to provide for the assumption by a Successor Company of the obligations of the Company
under this Indenture and the Notes pursuant to Article 11;

     (c) to add guarantees with respect to the Notes;

     (d) to secure the Notes;

     (e) to add to the covenants for the benefit of the Holders or surrender any right or power
conferred upon the Company;

     (f) to make any change that does not adversely affect the rights of the Holders of the Notes;

     (g) to provide for the assumption by a successor trustee of the Trustee’s obligations under
this Indenture and the Notes in accordance with Article 7;

     (h) to increase the Conversion Rate to the extent permitted by law and the rules of the NASDAQ
Global Select Market or any other securities exchange on which any of the securities of the Company
are then listed, if the Board of Directors determines that such increase would be in the best
interest of the Company;

     (i) to provide for the conversion of the Notes in accordance with Section 14.07 of the
Indenture; or

     (j) to conform the provisions of this Indenture or the Notes to the “Description of notes”
section of the Offering Memorandum.

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     Upon the written request of the Company, 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, 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 10.01 may be executed
by the Company and the Trustee without the consent of the Holders of any of the Notes at the time
outstanding, notwithstanding any of the provisions of Section 10.02.

     Section 10.02. Supplemental Indentures with Consent of Holders. With the consent (evidenced
as provided in Article 8) of the Holders of at least a majority of the aggregate principal amount
of the Notes then outstanding (determined in accordance with Article 8 and including, without
limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer
for, Notes), the Company, when authorized by the resolutions of the Board of Directors and the
Trustee, at the Company’s expense, 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; provided, however, that, without the consent of
each Holder of an outstanding Note affected, no such supplemental indenture shall:

     (a) reduce the percentage of the aggregate principal amount of Notes whose Holders must
consent to an amendment of this Indenture or to waive any past Default or Event of Default;

     (b) reduce the rate of or extend the stated time for payment of interest on any Note;

     (c) reduce the principal of or extend the Maturity Date of any Note;

     (d) make any change that impairs or adversely affects the conversion rights of any Notes;

     (e) reduce the Fundamental Change Purchase Price of any Note or amend or modify in any manner
adverse to the Holders the Company’s obligation to make such payments, whether through an amendment
or waiver of provisions in the covenants, definitions or otherwise;

     (f) make any Note payable in a currency other than that stated in the Note;

     (g) change the ranking of the Notes;

     (h) impair the right of any Holder to receive payment of principal of, and interest on, such
Holder’s Notes on or after the due dates therefor or to institute suit for the enforcement of any
payment on or with respect to such Holder’s Notes; or

     (i) make any change to this proviso or to the waiver provisions in Section 6.09.

     Upon the written request of the Company, and upon the filing with the Trustee of evidence of
the consent of Holders as aforesaid and subject to Section 10.05, the Trustee shall

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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.

     The consent of the Holders is not necessary under this Section 10.02 to approve the particular
form of any proposed supplemental indenture, but it shall be sufficient if the required number of
Holders approve the substance thereof. After any such supplemental indenture becomes effective,
the Company shall mail to the Holders a notice briefly describing such supplemental indenture;
provided that the failure to give such notice to all the Holders, or any defect in such notice,
shall not impair or affect the validity of the supplemental indenture.

     Section 10.03. Effect of Supplemental Indentures. Upon the execution of any supplemental
indenture pursuant to the provisions of this Article 10, this Indenture shall be and 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
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 be deemed to be part of the terms and conditions of this Indenture for any and all
purposes.

     Section 10.04. Notation on Notes. Notes authenticated and delivered after the execution of
any supplemental indenture pursuant to the provisions of this Article 10 may, at the Company’s
expense, 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 Notes 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 17.10) and delivered in exchange for the Notes then
outstanding, upon surrender of such Notes then outstanding.

     Section 10.05. Evidence of Compliance of Supplemental Indenture to Be Furnished to Trustee.
In addition to the documents required by Section 17.05, the Trustee shall receive 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 10 and is permitted or
authorized by the Indenture.

ARTICLE 11

Consolidation, Merger, Sale, Conveyance and Lease

     Section 11.01. Company May Consolidate, Etc. on Certain Terms. The Company shall not
consolidate with, merge with or into, or sell, convey, transfer or lease all or substantially all
of its properties and assets to another Person, unless:

     (a) the resulting, surviving or transferee Person (the “Successor Company”), if not the
Company, shall be a Person organized and existing under the laws of the United States of

50

 

America,
any State thereof or the District of Columbia, and the Successor Company (if not the
Company) expressly assumes, by supplemental indenture all of the obligations of the Company
under the Notes and this Indenture;

     (b) if as a result of such transaction the Notes become convertible into, or the Daily VWAP is
calculated by reference to, common stock or other securities issued by a third party (subject to
the provisions of Section 14.02), such third party fully and unconditionally guarantees all
obligations of the Company or such Successor Company under the Notes and such supplemental
indenture, unless such guarantee is not required for any shares of the Common Stock issuable upon
conversion of the Notes to be freely tradable under U.S. securities law; and

     (c) immediately after giving effect to such transaction, no Default or Event of Default shall
have occurred and be continuing under this Indenture.

     Section 11.02. Successor Corporation to Be Substituted. In case of any such consolidation,
merger, sale, conveyance, transfer or lease and upon the assumption by the Successor Company, 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 accrued and unpaid interest on all
of the Notes, the due and punctual delivery or payment, as the case may be, of any consideration
due upon conversion of the Notes and the due and punctual performance of all of the covenants and
conditions of this Indenture to be performed by the Company, such Successor Company (if not the
Company) shall succeed to and be substituted for the Company, with the same effect as if it had
been named herein as the party of the first part, except in the case of a lease of all or
substantially all of the Company’s properties and assets. Such Successor Company thereupon may
cause to be signed, and may issue either in its own name or in the name of the Company any or all
of the Notes issuable hereunder which theretofore shall not have been signed by the Company and
delivered to the Trustee; and, upon the order of such Successor Company 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 Notes that
previously shall have been signed and delivered by the Officers of the Company to the Trustee for
authentication, and any Notes that such Successor Company thereafter shall cause to be signed and
delivered to the Trustee for that purpose. All the Notes so issued shall in all respects have the
same legal rank and benefit under this Indenture as the Notes theretofore or thereafter issued in
accordance with the terms of this Indenture as though all of such Notes had been issued at the date
of the execution hereof. In the event of any such consolidation, merger, sale, conveyance or
transfer (but not in the case of a lease), upon compliance with this Article 11, 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 11 may be dissolved, wound up and
liquidated at any time thereafter and, except in the case of a lease, such Person shall be released
from its liabilities as obligor and maker of the Notes and from its obligations under this
Indenture and the Notes.

     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 Notes thereafter to be issued as
may be appropriate.

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     Section 11.03. Opinion of Counsel to Be Given Trustee. No consolidation, merger, sale,
conveyance, transfer or lease shall be effective unless 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 and, if a supplemental indenture is
required in connection with such transaction, such supplemental indenture, complies with the
provisions of this Article 11.

ARTICLE 12

Immunity of Incorporators, Stockholders, Officers and Directors

     Section 12.01. No Personal Liability of Directors, Officers, Employees and Shareholders. No
director, officer, employee, incorporator, shareholder or partner of the Company, as such, shall
have any liability for any of the Company’s obligations under the Notes or this Indenture or for
any claim based on, in respect of, or by reason of, such obligations or their creation, except as
expressly provided in this Indenture or any supplemental indenture hereto. Each Holder of Notes by
accepting a Note waives and releases all such liability, as part of the consideration for issuance
of the Notes.

ARTICLE 13

Intentionally Omitted

ARTICLE 14

Conversion of Notes

     Section 14.01. Conversion Privilege. (a) Subject to and upon compliance with the provisions
of this Article 14, each Holder of a Note shall have the right, at such Holder’s option, to convert
all or any portion (if the portion to be converted is $1,000 principal amount or an integral
multiple thereof) of such Note (i) subject to satisfaction of one or more of the conditions
described in Section 14.01(b), at any time prior to the close of business on the Business Day
immediately preceding March 15, 2014 under the circumstances and during the periods set forth in
Section 14.01(b), and (ii) regardless of whether any of the conditions set forth in Section
14.01(b) has been met, on or after March 15, 2014 and prior to the close of business on the second
Scheduled Trading Day immediately preceding the Maturity Date, in each case, at the applicable
Conversion Rate (subject to the settlement provisions of Section 14.02, the “Conversion
Obligation”).

     (b) (i) Prior to the close of business on the Business Day immediately preceding March 15,
2014, the Notes shall be convertible during the five Business Day period immediately after any five
consecutive Trading Day period (the “Measurement Period”) in which the Trading Price per $1,000
principal amount of Notes, as determined following a request by a Holder of Notes in accordance
with this subsection (b)(i) and the definition of Trading Price set forth in this Indenture, for
each Trading Day of such Measurement Period was less than 98% of the product of the Last Reported
Sale Price of the Common Stock and the Conversion Rate on such

52

 

Trading Day (the “Trading Price Condition”). The Trading Prices shall be determined by the
Bid Solicitation Agent pursuant to this subsection (b)(i) and the definition of Trading Price set
forth in this Indenture. The Company shall provide written notice to the Bid Solicitation Agent of
the three independent nationally recognized securities dealers selected by the Company pursuant to
the definition of Trading Price, along with appropriate contact information for each. The Bid
Solicitation Agent shall have no obligation to determine the Trading Price of the Notes unless the
Company has requested such determination, and the Company shall have no obligation to make such
request unless a Holder provides the Company with reasonable evidence that the Trading Price per
$1,000 principal amount of the Notes would be less than 98% of the product of the Last Reported
Sale Price of the Common Stock and the applicable Conversion Rate, at which time the Company shall
instruct the Bid Solicitation Agent to determine the Trading Price of the Notes in the manner
described in this subsection (b)(i) and the definition of Trading Price set forth in this Indenture
beginning on the next Trading Day following the receipt of such evidence and on each successive
Trading Day until the Trading Price per $1,000 principal amount of the Notes is greater than or
equal to 98% of the product of the Last Reported Sale Price of the Common Stock and the Conversion
Rate on such Trading Day. If the Company does not instruct the Bid Solicitation Agent to determine
the Trading Price of the Notes, or if the Company gives such instruction to the Bid Solicitation
Agent, and the Bid Solicitation Agent fails to make such determination, in each case when the
Company or the Bid Solicitation Agent, as the case may be, is obligated to do so pursuant to the
preceding sentence, then, in either case, the Trading Price per $1,000 principal amount of Notes
shall be deemed to be less than 98% of the product of the Last Reported Sale Price of the Common
Stock and the applicable Conversion Rate on each Trading Day of such failure. If the Trading Price
Condition has been met, the Company shall so notify the Holders, the Trustee and the Conversion
Agent (if other than the Trustee) within one Business Day. If, at any time after the Trading Price
Condition has been met, the Trading Price per $1,000 principal amount of Notes is greater than or
equal to 98% of the product of the Last Reported Sale Price of the Common Stock and the applicable
Conversion Rate, the Company shall so notify the Holders, the Trustee and the Conversion Agent (if
other than the Trustee) within one Business Day.

     (ii) If, prior to the close of business on the Business Day immediately preceding March
15, 2014, the Company elects to:

     (A) issue to all or substantially all holders of the Common Stock any rights,
options or warrants entitling them, for a period of not more than 45 calendar days
after the announcement date of such issuance, to subscribe for or purchase shares
of the Common Stock, at a price per share that is less than the average of the Last
Reported Sale Prices of the Common Stock for the 10 consecutive Trading Day period
ending on, and including, the Trading Day immediately preceding the date of
announcement of such issuance; or

     (B) distribute to all or substantially all holders of the Common Stock the
Company’s assets, debt securities or rights to purchase securities of the Company,
which distribution has a value per share of the Common Stock, as reasonably
determined by the Board of Directors, exceeding 10% of the Last

53

 

Reported Sale Price of the Common Stock on the Trading Day preceding the date of announcement for such
distribution,

then, in either case, the Company shall notify in writing all Holders of the Notes, the Trustee and
the Conversion Agent (if other than the Trustee) at least 35 Scheduled Trading Days prior to the
Ex-Dividend Date for such issuance or distribution. Once the Company has given such notice, the
Notes shall be convertible at any time until the earlier of (1) the close of business on the
Business Day immediately preceding such Ex-Dividend Date and (2) the Company’s announcement that
such issuance or distribution will not take place, even if the Notes are not otherwise convertible
at such time. Holders of the Notes shall not have the right to convert their Notes solely due to
this Section 14.01(b)(ii) if each Holder will have the right to participate (as a result of holding
the Notes, and at the same time and on the same terms as holders of Common Stock participate) in
any of the transactions described in this Section 14.01(b)(ii) as if such Holder of the Notes held
a number of shares of the Common Stock equal to (i) the applicable Conversion Rate, multiplied by
(ii) (x) the principal amount of Notes held by such Holder divided by (y) $1,000, without having to
convert its Notes.

     (iii) If a transaction or event that constitutes a Fundamental Change or a Make-Whole
Fundamental Change occurs prior to the close of business on the Business Day immediately
preceding March 15, 2014, regardless of whether a Holder has the right to require the
Company to purchase such Holder’s Notes pursuant to Section 15.02, or if the Company is a
party to a consolidation, merger, binding share exchange, sale, conveyance, transfer or
lease of all or substantially all of the Company’s assets, pursuant to which the Common
Stock would be converted into cash, securities or other assets, the Notes may be surrendered
for conversion at any time from or after the Business Day following the effective date of
the transaction until 35 Trading Days after the effective date of such transaction or, if
such transaction also constitutes a Fundamental Change, until the related Fundamental Change
Purchase Date. The Company shall notify in writing all Holders, the Trustee and the
Conversion Agent (if other than the Trustee) of such transaction no later than the effective
date of such transaction.

     (iv) Prior to the close of business on the Business Day immediately preceding March 15,
2014, the Notes shall be convertible during any calendar quarter commencing after December
31, 2010 (and only during such calendar quarter), if the Last Reported Sale Price of the
Common Stock for at least 20 Trading Days (whether or not consecutive) during the period of
30 consecutive Trading Days ending on the last Trading Day of the immediately preceding
calendar quarter is greater than or equal to 130% of the applicable Conversion Price on each
applicable Trading Day. The Conversion Agent, on behalf of the Company, shall determine at
the beginning of each calendar quarter commencing after December 31, 2010 whether the Notes
may be surrendered for conversion in accordance with this clause (iv) and shall notify in
writing the Company and the Trustee on or prior to the fifth Business Day of the Notes
becoming convertible in accordance with this clause (iv).

Section 14.02. Conversion Procedure; Settlement Upon Conversion.

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     (a) Except as provided in Section 14.03(b), upon any conversion of any Note, the Company shall
pay or deliver, as the case may be, to converting Holders, in respect of its Conversion Obligation,
(i) shares of Common Stock, together with cash, if applicable, in lieu of any fractional share of
Common Stock in accordance with subsection (i) of this Section 14.02
(“Physical Settlement”), (ii) a cash payment without any delivery of shares of Common Stock
(“Cash Settlement”), or (iii) a combination of cash and shares of Common Stock, together with cash,
if applicable, in lieu of any fractional share of Common Stock in accordance with subsection (i) of
this Section 14.02 (“Combination Settlement”), at its election, as set forth in this Section 14.02.

     (i) Prior to the close of business on the Business Day immediately preceding March 15,
2014, the Company shall use the same Settlement Method for all conversions occurring on the
same Conversion Date, provided that, prior to March 15, 2014, the Company shall not have any
obligation to use the same Settlement Method with respect to conversions that occur on
different Conversion Dates.

     (ii) For conversions:

     (A) that occur prior to the close of business on the Business Day immediately
preceding March 15, 2014, by the close of business on the Business Day following
the Conversion Date, the Company shall deliver a notice to converting Holders of
the relevant Settlement Method in respect of such Conversion Date and, if the
Company elects Combination Settlement, the related Cash Amount; and

     (B) that occur on or after March 15, 2014, the Company shall deliver a notice
to all Holders of the relevant Settlement Method and, if the Company elects
Combination Settlement, the related Cash Amount, prior to the close of business on
the Business Day immediately preceding March 15, 2014 (which Settlement Method and
Cash Amount, if applicable, will apply to all conversions on or after March 15,
2014).

Any Settlement Notice delivered pursuant to clause (A) or (B) of this Section 14.02(a)(ii)
may not be revoked.

     (iii) If the Company does not deliver a Settlement Notice with respect to any
conversion of a Note in accordance with Section 14.02(a)(ii), then the Company shall be
deemed to have elected Combination Settlement in respect of its Conversion Obligation and
the related Cash Amount shall be deemed to be $1,000. If the Company delivers a Settlement
Notice with respect to the conversion of a Note in accordance with Section 14.02(a)(ii)
electing Combination Settlement as the Settlement Method and does not indicate the Cash
Amount, such Cash Amount shall be deemed to be $1,000.

     (iv) With respect to any shares of Common Stock that are issuable upon conversion:

55

 

     (A) if Physical Settlement applies, the Person in whose name the
certificate or certificates for such shares of Common Stock shall be registered
shall become the holder of record of such shares of Common Stock as of the close of
business on the relevant Conversion Date; and

     (B) if Combination Settlement applies, the Person in whose name the
certificate or certificates for such shares of Common Stock shall be registered
shall become the holder of record of such shares of Common Stock as of the close of
business on the last Trading Day of the related Observation Period.

     Upon a conversion of Notes, the Holder who surrendered such Notes for conversion shall no
longer be a Holder of such Notes, except for purposes of participating in a transaction that, but
for the participation of Holders of the Notes, would give rise to an adjustment to the Conversion
Rate pursuant to Section 14.04.

     (v) If Physical Settlement applies to any Notes surrendered for conversion, the Company
shall deliver to the converting Holder (subject to Section 14.02(c)), for each $1,000
principal amount of Notes being converted, a number of shares of Common Stock equal to the
applicable Conversion Rate as of the relevant Conversion Date, together with cash in lieu of
fractional shares of Common Stock pursuant to Section 14.02(i). Subject to Section
14.03(b), the Company shall deliver such shares of Common Stock (1) on the third Business
Day following the Conversion Date, in the case of a Physical Settlement with respect to a
Conversion Date that occurs prior to the close of business on the Business Day immediately
preceding March 15, 2014 or (2) on the third Business Day following the last Trading Day of
the applicable Observation Period, in the case of a Physical Settlement with respect to a
Conversion Date that occurs on or after March 15, 2014.

     (vi) If Cash Settlement applies to any Notes surrendered for conversion, the Company
shall pay to the converting Holder, for each $1,000 principal amount of Notes being
converted, an amount of cash equal to the sum of the Daily Conversion Values for each
Trading Day during the relevant Observation Period. Subject to Section 14.03(b), the
Company shall make such payment on the third Business Day following the last Trading Day of
the applicable Observation Period.

     (vii) If Combination Settlement applies to any Notes surrendered for conversion, the
Company shall pay or deliver, as the case may be, to the converting Holder (subject to
Section 14.02(c)) for each $1,000 principal amount of Notes being converted, the sum of the
Daily Settlement Amounts for each Trading Day during the relevant Observation Period. Subject to
Section 14.03(b), the Company shall deliver the cash and shares of Common Stock comprising
its Conversion Obligation pursuant to the preceding sentence on the third Business Day
following the last Trading Day of the applicable Observation Period.

     (viii) The Daily Settlement Amounts (if applicable) and the Daily Conversion Values (if
applicable) shall be determined by the Company promptly following the last day of the
Observation Period. Promptly after such determination of the Daily Settlement

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Amounts or
the Daily Conversion Values, as the case may be, and the amount of cash deliverable in lieu
of any fractional share pursuant to Section 14.02(i), the Company shall notify in writing
the Trustee and the Conversion Agent (if other than the Trustee) of the Daily Settlement
Amounts or the Daily Conversion Values, as the case may be, and the amount of cash
deliverable in lieu of fractional shares of Common Stock. The Trustee and the Conversion
Agent (if other than the Trustee) shall have no responsibility for any such determination.

     (b) Before any holder of a beneficial interest in a Global Note shall be entitled to convert
such beneficial interest as set forth above, such holder shall comply with the procedures of the
Depositary for converting a beneficial interest in a global note in effect at that time and, if
required, pay funds equal to any interest payable on the next Interest Payment Date to which such
holder is not entitled as set forth in Section 14.02(h) and, if required, all documentary, stamp or
similar issue or transfer taxes, if any, as required by Section 14.02(d) or Section 14.02(e). In
the case of a Physical Note, before the Holder thereof shall be entitled to convert such Note as
set forth above, such Holder shall (1) complete, manually sign and deliver an irrevocable notice to
the Conversion Agent as set forth in the Form of Notice of Conversion (or a facsimile thereof) (a
“Notice of Conversion”) at the office of the Conversion Agent and state in writing therein the
principal amount of such Note to be converted and the name or names (with addresses) in which such
Holder wishes the certificate or certificates for any shares of Common Stock to be delivered upon
settlement of the Conversion Obligation to be registered, (2) surrender such Note, duly endorsed to
the Company or in blank at the office of the Conversion Agent, (3) if required, pay funds equal to
any interest payable on the next Interest Payment Date to which such Holder is not entitled as set
forth in Section 14.02(h), (4) if required, furnish appropriate endorsements and transfer documents
and (5) if required, pay all documentary, stamp or similar issue or transfer taxes, if any, as
required by Section 14.02(d) or Section 14.02(e). The Conversion Agent shall notify the Company of
any conversion pursuant to this Article 14 on the Conversion Date for such conversion. No Notice
of Conversion with respect to any Note may be delivered by the Holder thereof if such Holder has
also delivered a Fundamental Change Purchase Notice to the Company in respect of such Note and not
validly withdrawn such Fundamental Change Purchase Notice in accordance with Section 15.03.

     If more than one Note shall be surrendered for conversion at one time by the same Holder, the
Conversion Obligation with respect to such Notes shall be computed on the basis of the aggregate
principal amount of the Notes (or specified portions thereof to the extent permitted thereby) so
surrendered.

     (c) A Note shall be deemed to have been converted immediately prior to the close of business
on the date (the “Conversion Date”) that the Holder has complied with the
requirements set forth in subsection (b) above. If any shares of Common Stock are due to
converting Holders, the Company shall issue or cause to be issued, and deliver to the Conversion
Agent or to such Holder, or such Holder’s nominee or nominees, certificates or a book-entry
transfer through the Depositary for the full number of shares of Common Stock to which such Holder
shall be entitled in satisfaction of the Company’s Conversion Obligation.

     (d) In case any Note shall be surrendered for partial conversion, the Company shall execute
and the Trustee shall authenticate and deliver to or upon the written order of the Holder

57

 

of the Note so surrendered a new Note or Notes in authorized denominations in an aggregate
principal amount equal to the unconverted portion of the surrendered Note, without payment of any
service charge by the converting Holder but, if required by the Company or Trustee, with payment of
a sum sufficient to cover any transfer tax or similar governmental charge required by law or that
may be imposed in connection therewith as a result of the name of the Holder of the new Notes
issued upon such conversion being different from the name of the Holder of the old Notes
surrendered for such conversion.

     (e) If a Holder submits a Note for conversion in accordance with Section 14.02, the Company
shall pay any documentary, stamp or similar issue or transfer tax due on the issue of any shares of
Common Stock upon such conversion, unless such tax is due because such Holder requests such shares
to be issued in a name other than such Holder’s name, in which case such Holder shall pay such tax.
The Conversion Agent may refuse to deliver the certificates representing the shares of Common
Stock being issued in a name other than the Holder’s name until the Trustee receives a sum
sufficient to pay any such tax that is due by such Holder in accordance with the immediately
preceding sentence.

     (f) Except as provided in Section 14.04, no adjustment shall be made for dividends on any
shares issued upon the conversion of any Note as provided in this Article 14.

     (g) Upon the conversion of an interest in a Global Note, the Trustee, or the Custodian at the
direction of the Trustee, shall make a notation on such Global Note as to the reduction in the
principal amount represented thereby. The Company shall notify the Trustee in writing of any
conversion of Notes effected through any Conversion Agent other than the Trustee.

     (h) Upon conversion, a Holder shall not receive any separate cash payment or additional shares
of Common Stock representing accrued and unpaid interest, if any, except as set forth below. Upon
conversion of any Note, the Company’s settlement of the Conversion Obligation with respect to such
Note shall be deemed to satisfy in full its obligation to pay the principal amount of such Note and
accrued and unpaid interest, if any, on such Note to, but not including, the Conversion Date. As a
result, accrued and unpaid interest, if any, on such Note to, but not including, the Conversion
Date shall be deemed to be paid in full rather than cancelled, extinguished or forfeited. Upon a
conversion of Notes into a combination of cash and shares of Common Stock, accrued and unpaid
interest, if any, shall be deemed to be paid first out of the cash paid upon such conversion.
Notwithstanding the foregoing, if Notes are converted after the close of business on a Regular
Record Date and prior to the open of business on the corresponding Interest Payment Date, Holders
of such Notes as of the close of business on such Regular Record Date shall receive the full amount
of interest payable on such Notes on the corresponding Interest Payment Date notwithstanding such
conversion. Notes surrendered for conversion during the period from the close of business on any
Regular Record Date to the open of business on the immediately following Interest Payment Date must
be accompanied by funds equal to the amount of interest payable on the Notes so converted; provided
that no such payment shall be required (1) if such Notes are surrendered for conversion after the
close of business on the Regular Record Date immediately preceding the Maturity Date; (2) if the
Company has specified a Fundamental Change Purchase Date that is after a Regular Record Date and on
or prior to the second Scheduled Trading Day immediately following the corresponding

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Interest Payment Date; or (3) to the extent of any Defaulted Amounts, if any Defaulted Amounts
exist at the time of conversion with respect to such Note.

     (i) The Company shall not issue any fractional share of Common Stock upon conversion of the
Notes and shall instead pay cash in lieu of any fractional share of Common Stock issuable upon
conversion. If Physical Settlement applies, the amount of such cash shall be based on the Daily
VWAP of the Common Stock (i) on the relevant Conversion Date, if such Conversion Date occurs prior
to the close of business on the Business Day immediately preceding March 15, 2014 and (ii) on the
last Trading Day of the applicable Observation Period, if the relevant Conversion Date occurs on or
after March 15, 2014. If Combination Settlement applies, the amount of such cash shall be based on
the Daily VWAP of the Common Stock on the last Trading Day of the applicable Observation Period.
If Combination Settlement applies, for each Note surrendered for conversion the full number of
shares of Common Stock that shall be issued upon conversion thereof shall be calculated on the
basis of the aggregate Daily Settlement Amounts for the applicable Observation Period and any
fractional shares of Common Stock remaining after such calculation shall be paid in cash. In
addition, if more than one Note shall be surrendered for conversion at one time by the same Holder,
the number of full shares of Common Stock, if any, that shall be issued upon conversion thereof
shall be calculated on the basis of the aggregate principal amount of the Notes (or specified
portions thereof) so surrendered.

     Section 14.03. Increased Conversion Rate Applicable to Certain Notes Surrendered in
Connection with Make-Whole Fundamental Changes. (a) If a Make-Whole Fundamental Change occurs and
a Holder elects to convert its Notes in connection with such Make-Whole Fundamental Change, the
Company shall, under the circumstances described below, increase the Conversion Rate for the Notes
so surrendered for conversion by a number of additional shares of Common Stock (the “Additional
Shares”), as described below. A conversion of Notes shall be deemed for these purposes to be “in
connection with” such Make-Whole Fundamental Change if the relevant Notice of Conversion is
received by the Conversion Agent from, and including, the Effective Date of the Make-Whole
Fundamental Change up to, and including, the Business Day immediately prior to the related
Fundamental Change Purchase Date (or, in the case of a Make-Whole Fundamental Change that would
have been a Fundamental Change but for the proviso in clause (b) of the definition thereof, the
35th Trading Day immediately following the Effective Date of such Make-Whole Fundamental Change).

     (b) Upon surrender of Notes for conversion in connection with a Make-Whole Fundamental Change
pursuant to Section 14.01(b)(iii), the Company shall pay or deliver, as the case may be, shares of
Common Stock, cash or a combination of cash and shares of Common Stock in accordance with Section
14.02; provided, however, that if, at the effective time of a Make-Whole Fundamental Change
described in clause (b) of the definition of Fundamental Change, the Reference Property is
comprised entirely of cash, for any conversion of Notes following the Effective Date of such
Make-Whole Fundamental Change, the consideration due upon conversion shall be an amount of cash per
$1,000 principal amount of converted Notes equal to the applicable Conversion Rate (including any
adjustment for Additional Shares), multiplied by the Stock Price for such Make-Whole Fundamental
Change. In such event, the Conversion Obligation shall be determined as of the relevant Conversion
Date and paid to

59

 

Holders in cash on the third Business Day following such Conversion Date. The Company shall
notify the Holders of Notes of the Effective Date of any Make-Whole Fundamental Change and issue a
press release announcing such Effective Date no later than five Business Days after such Effective
Date.

     (c) The number of Additional Shares, if any, by which the Conversion Rate shall be increased
shall be determined by reference to the table below, based on the date on which the Make-Whole
Fundamental Change occurs or becomes effective (the “Effective Date”) and the price (the “Stock
Price”) paid (or deemed paid) per share of the Common Stock in the Make-Whole Fundamental Change.
If the holders of the Common Stock receive only cash in a Make-Whole Fundamental Change described
in clause (b) of the definition of Fundamental Change, the Stock Price shall be the cash amount
paid per share. Otherwise, the Stock Price shall be the average of the Last Reported Sale Prices
of the Common Stock over the five Trading Day period ending on, and including, the Trading Day
immediately preceding the Effective Date of the Make-Whole Fundamental Change.

     (d) The Stock Prices set forth in the column headings of the table below shall be adjusted as
of any date on which the Conversion Rate of the Notes is otherwise adjusted. The adjusted Stock
Prices shall equal the Stock Prices applicable immediately prior to such adjustment, multiplied by
a fraction, the numerator of which is the Conversion Rate immediately prior to the adjustment
giving rise to the Stock Price adjustment and the denominator of which is the Conversion Rate as so
adjusted. The number of Additional Shares set forth in the table below shall be adjusted in the
same manner and at the same time as the Conversion Rate as set forth in Section 14.04.

     (e) The following table sets forth the number of Additional Shares to be added to the
Conversion Rate pursuant to this Section 14.03 for each Stock Price and Effective Date set forth
below:

	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	 	 	Stock Price	 
	Effective date	 	$21.56	 	 	$25.00	 	 	$30.00	 	 	$35.00	 	 	$40.00	 	 	$50.00	 	 	$60.00	 	 	$70.00	 	 	$80.00	 	 	$90.00	 	 	$100.00	 
	September 20, 2010
	 	 	10.0039	 	 	 	6.3196	 	 	 	3.9301	 	 	 	2.9644	 	 	 	2.4731	 	 	 	1.8939	 	 	 	1.5217	 	 	 	1.2563	 	 	 	1.0572	 	 	 	0.9023	 	 	 	0.7783	 
	September 15, 2011
	 	 	10.0039	 	 	 	5.8075	 	 	 	3.2169	 	 	 	2.3163	 	 	 	1.9174	 	 	 	1.4696	 	 	 	1.1820	 	 	 	0.9767	 	 	 	0.8226	 	 	 	0.7028	 	 	 	0.6063	 
	September 15, 2012
	 	 	10.0039	 	 	 	5.1697	 	 	 	2.3588	 	 	 	1.5837	 	 	 	1.3080	 	 	 	1.0050	 	 	 	0.8080	 	 	 	0.6672	 	 	 	0.5615	 	 	 	0.4791	 	 	 	0.4133	 
	September 15, 2013
	 	 	10.0039	 	 	 	4.2585	 	 	 	1.2807	 	 	 	0.7990	 	 	 	0.6755	 	 	 	0.5239	 	 	 	0.4231	 	 	 	0.3507	 	 	 	0.2963	 	 	 	0.2540	 	 	 	0.2198	 
	September 15, 2014
	 	 	10.0039	 	 	 	3.6218	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 

     The exact Stock Prices and Effective Dates may not be set forth in the table above, in
which case:

     (i) if the Stock Price is between two Stock Prices in the table above or the Effective
Date is between two Effective Dates in the table, the number of Additional Shares shall be
determined by a straight-line interpolation between the number of Additional Shares set
forth for the higher and lower Stock Prices or the earlier and later Effective Dates based
on a 365-day year, as applicable;

60

 

     (ii) if the Stock Price is greater than $100.00 per share (subject to adjustment in the
same manner as the Stock Prices set forth in the column headings of the table above pursuant
to clause (d) above), no Additional Shares shall be added to the Conversion Rate; and

     (iii) if the Stock Price is less than $21.56 per share (subject to adjustment in the
same manner as the Stock Prices set forth in the column headings of the table above pursuant
to clause (d) above), no Additional Shares shall be added to the Conversion Rate.

Notwithstanding the foregoing, in no event shall the total number of shares of Common Stock
issuable upon conversion exceed 46.3821 per $1,000 principal amount of Notes, subject to adjustment
in the same manner as the Conversion Rate pursuant to Section 14.04 and subject to Section 14.12.

     (f) Nothing in this Section 14.03 shall prevent an adjustment to the Conversion Rate pursuant
to Section 14.04 in respect of a Make-Whole Fundamental Change.

     Section 14.04. Adjustment of Conversion Rate. The Conversion Rate shall be adjusted from
time to time by the Company if any of the following events occurs, except that the Company shall
not make any adjustment to the Conversion Rate if Holders of the Notes participate (other than in
the case of a share split or share combination), at the same time and upon the same terms as
holders of the Common Stock and solely as a result of holding the Notes, in any of the transactions
described in this Section 14.04, without having to convert their Notes, as if they held a number of
shares of Common Stock equal to (i) the Conversion Rate in effect immediately prior to the
effective time for such adjustment, multiplied by (ii) (x) the principal amount of Notes held by
such Holder divided by (y) $1,000.

     (a) If the Company exclusively issues shares of Common Stock as a dividend or distribution on
shares of the Common Stock, or if the Company effects a share split or share combination, the
Conversion Rate shall be adjusted based on the following formula:

where,

	 	 	 	 	 

	CR0

	 	=
	 	the Conversion Rate in effect immediately prior to
the open of business on the Ex-Dividend Date for
such dividend or distribution, or immediately
prior to the open of business on the Distribution
Effective Date of such share split or share
combination, as applicable;
	 
	 	 	 	 
	CR1

	 	=
	 	the Conversion Rate in effect immediately after
the open of business on such Ex-Dividend Date or
Distribution Effective Date;
	 
	 	 	 	 
	OS0

	 	=
	 	the number of shares of Common Stock outstanding
immediately prior to the open of business on such
Ex-Dividend Date or Distribution Effective Date;
and

61

 

	 	 	 	 	 

	OS1

	 	=
	 	the number of shares of Common Stock outstanding
immediately after giving effect to such dividend,
distribution, share split or share combination.

Any adjustment made under this Section 14.04(a) shall become effective immediately after the open
of business on the Ex-Dividend Date for such dividend or distribution, or immediately after the
open of business on the Distribution Effective Date for such share split or share combination, as
applicable. If any dividend or distribution of the type described in this Section 14.04(a) is
declared but not so paid or made, the Conversion Rate shall be immediately readjusted, effective as
of the date the Board of Directors determines not to pay such dividend or distribution, to the
Conversion Rate that would then be in effect if such dividend or distribution had not been
declared.

     (b) If the Company issues to all or substantially all holders of the Common Stock any rights,
options or warrants entitling them, for a period of not more than 45 calendar days after the
announcement date of such issuance, to subscribe for or purchase shares of the Common Stock at a
price per share that is less than the average of the Last Reported Sale Prices of the Common Stock
for the 10 consecutive Trading Day period ending on, and including, the Trading Day immediately
preceding the date of announcement of such issuance, the Conversion Rate shall be increased based
on the following formula:

where,

	 	 	 	 	 

	CR0

	 	=
	 	the Conversion Rate in effect immediately prior to
the open of business on the Ex-Dividend Date for
such issuance;
	 
	 	 	 	 
	CR1

	 	=
	 	the Conversion Rate in effect immediately after
the open of business on such Ex-Dividend Date;
	 
	 	 	 	 
	OS0

	 	=
	 	the number of shares of Common Stock outstanding
immediately prior to the open of business on such
Ex-Dividend Date;
	 
	 	 	 	 
	X

	 	=
	 	the total number of shares of Common Stock
issuable pursuant to such rights, options or
warrants; and
	 
	 	 	 	 
	Y

	 	=
	 	the number of shares of Common Stock equal to the
aggregate price payable to exercise such rights,
options or warrants, divided by the average of the
Last Reported Sale Prices of the Common Stock over
the 10 consecutive Trading Day period ending on,
and including, the Trading Day immediately
preceding the date of announcement of the issuance
of such rights, options or warrants.

Any increase made under this Section 14.04(b) shall be made successively whenever any such rights,
options or warrants are issued and shall become effective immediately after the open of business on
the Ex-Dividend Date for such issuance. To the extent that shares of the Common Stock are not
delivered after the expiration of such rights, options or warrants, the Conversion

62

 

Rate shall be decreased to the Conversion Rate that would then be in effect had the increase with
respect to the issuance of such rights, options or warrants been made on the basis of delivery of
only the number of shares of Common Stock actually delivered. If such rights, options or warrants
are not so issued, the Conversion Rate shall be decreased to the Conversion Rate that would then be
in effect if such Ex-Dividend Date for such issuance had not occurred.

     For purposes of Section 14.01(b)(ii)(A) and this Section 14.04(b), in determining whether any
rights, options or warrants entitle the holders thereof to subscribe for or purchase shares of
Common Stock at less than such average of the Last Reported Sale Prices of the Common Stock for the
10 consecutive Trading Day period ending on, and including, the Trading Day immediately preceding
the date of announcement for such issuance, 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, options 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.

     (c) If the Company distributes shares of its Capital Stock, evidences of its indebtedness,
other assets or property of the Company or rights, options or warrants to acquire Capital Stock or
other securities of the Company, to all or substantially all holders of the Common Stock, excluding
(i) dividends, distributions or issuances as to which an adjustment was effected pursuant to
Section 14.04(a) or Section 14.04(b), (ii) dividends or distributions paid exclusively in cash (as
set forth in Section 14.04(d)), and (iii) Spin-Offs to which the provisions set forth below in this
Section 14.04(c) shall apply (any of such shares of Capital Stock, evidences of indebtedness, other
assets or property or rights, options or warrants to acquire Capital Stock or other securities of
the Company, the “Distributed Property”), then the Conversion Rate shall be increased based on the
following formula:

where,

	 	 	 	 	 

	CR0

	 	=
	 	the Conversion Rate in effect immediately prior to
the open of business on the Ex-Dividend Date for
such distribution;
	 
	 	 	 	 
	CR1

	 	=
	 	the Conversion Rate in effect immediately after
the open of business on such Ex-Dividend Date;
	 
	 	 	 	 
	SP0

	 	=
	 	the average of the Last Reported Sale Prices of
the Common Stock over the 10 consecutive Trading
Day period ending on, and including, the Trading
Day immediately preceding the Ex-Dividend Date for
such distribution; and
	 
	 	 	 	 
	FMV

	 	=
	 	the fair market value (as determined by the Board
of Directors) of the Distributed Property with
respect to each outstanding share of Common Stock
on the Ex-Dividend Date for such distribution.

63

 

If the Board of Directors determines the “FMV” (as defined above) of any distribution for purposes
of this Section 14.04(c) by reference to the actual or when-issued trading market for any
securities, it shall in doing so consider the prices in such market over the same period used in
computing the Last Reported Sale Prices of the Common Stock over the 10 consecutive Trading Day
period ending on, and including, the Trading Day immediately preceding the Ex-Dividend Date for
such distribution. Notwithstanding the foregoing, if “FMV” (as defined above) is equal to or
greater than “SP0” (as defined above), in lieu of the foregoing increase, each Holder of
a Note shall receive, in respect of each $1,000 principal amount thereof, at the same time and upon
the same terms as holders of the Common Stock receive the Distributed Property, the amount and kind
of Distributed Property such Holder would have received if such Holder owned a number of shares of
Common Stock equal to the Conversion Rate in effect on the Ex-Dividend Date for such distribution.

     Any increase made under the portion of this Section 14.04(c) above shall become effective
immediately after the open of business on the Ex-Dividend Date for such distribution. If such
distribution is not so paid or made, the Conversion Rate shall be decreased to the Conversion Rate
that would then be in effect if such distribution had not been declared. If such a distribution of
rights, options or warrants to acquire shares of Capital Stock or other securities of the Company
is made, to the extent that shares of Capital Stock or other securities of the Company are not
delivered after the expiration of such rights, options or warrants, the Conversion Rate shall be
decreased to the Conversion Rate that would then be in effect had the increase with respect to the
issuance of such rights, options or warrants been made on the basis of delivery of only the number
of shares of Capital Stock or other securities of the Company actually delivered.

     With respect to an adjustment pursuant to this Section 14.04(c) where there has been a payment
of a dividend or other distribution on the Common Stock of shares of Capital Stock of any class or
series, or similar equity interest, of or relating to a Subsidiary or other business unit of the
Company, in each case listed on a national or regional securities exchange (a “Spin-Off”), the
Conversion Rate shall be increased based on the following formula:

where,

	 	 	 	 	 

	CR0

	 	=
	 	the Conversion Rate in effect immediately prior
to the open of business on the Ex-Dividend Date
for such Spin-Off;
	 
	 	 	 	 
	CR1

	 	=
	 	the Conversion Rate in effect immediately after
the open of business on the Ex-Dividend Date for
such Spin-Off;
	 
	 	 	 	 
	FMV0

	 	=
	 	the average of the Last Reported Sale Prices of
the Capital Stock or similar equity interest
distributed to holders of the Common Stock
applicable to one share of the Common Stock
(determined for purposes of the definition of
Last Reported Sale Price as if such Capital Stock
or similar equity interest were Common Stock)
over

64

 

	 	 	 	 	 

	 

	 	 	 	the first 10 consecutive Trading Day period beginning on, and including, the
Ex-Dividend Date of the Spin-Off (the “Valuation Period”); and
	 
	 	 	 	 
	MP0

	 	=
	 	the average of the Last Reported Sale Prices
of the Common Stock over the Valuation
Period.

The increase to the Conversion Rate under the preceding paragraph shall be determined on the last
Trading Day of the Valuation Period but shall be given effect immediately after the open of
business on the Ex-Dividend Date for such Spin-Off; provided that in respect of any conversion
during the Valuation Period, references in the portion of this Section 14.04(c) related to
Spin-Offs to 10 Trading Days shall be deemed replaced with such lesser number of Trading Days as
have elapsed from, and including, the Ex-Dividend Date of such Spin-Off to, and including, the
Conversion Date in determining the applicable Conversion Rate. If the Ex-Dividend Date for such
Spin-Off is less than 10 Trading Days prior to, and including, the end of the Observation Period in
respect of any conversion, references in the portion of this Section 14.04(c) related to Spin-Offs
to 10 Trading Days shall be deemed replaced, for purposes of calculating the affected daily
Conversion Rates in respect of such conversion, with such lesser number of Trading Days as have
elapsed from, and including, the Ex-Dividend Date for such Spin-Off to, and including, the last
Trading Day of such Observation Period. If such Spin-Off is not made or completed, the Conversion
Rate shall be decreased to the Conversion Rate that would then be in effect if such Spin-Off had
not been declared.

     For purposes of this Section 14.04(c) (and subject in all respect to Section 14.11), rights,
options or warrants distributed by the Company to all holders of the Common Stock entitling them to
subscribe for or purchase shares of the Company’s Capital Stock, including Common Stock (either
initially or under certain circumstances), which rights, options or warrants, until the occurrence
of a specified event or events (“Trigger Event”): (i) are deemed to be transferred with such shares
of the Common Stock; (ii) are not exercisable; and (iii) are also issued in respect of future
issuances of the Common Stock, shall be deemed not to have been distributed for purposes of this
Section 14.04(c) (and no adjustment to the Conversion Rate under this Section 14.04(c) will be
required) until the occurrence of the earliest Trigger Event, whereupon such rights, options or
warrants shall be deemed to have been distributed and an appropriate adjustment (if any is
required) to the Conversion Rate shall be made under this Section 14.04(c). If any such right,
option or warrant, including any such existing rights, options or warrants distributed prior to the
date of this Indenture, are subject to events, upon the occurrence of which such rights, options or
warrants become exercisable to purchase different securities, evidences of indebtedness or other
assets, then the date of the occurrence of any and each such event shall be deemed to be the date
of distribution and Ex-Dividend Date with respect to new rights, options or warrants with such
rights (in which case the existing rights, options or warrants shall be deemed to terminate and
expire on such date without exercise by any of the holders thereof). In addition, in the event of
any distribution (or deemed distribution) of rights, options or warrants, or any Trigger Event or
other event (of the type described in the immediately preceding sentence) with respect thereto that
was counted for purposes of calculating a distribution amount for which an adjustment to the
Conversion Rate under this Section 14.04(c) was made, (1) in the case of any such rights, options
or warrants that shall all have been redeemed or purchased without exercise by any holders thereof,
upon such final redemption or purchase (x) the Conversion Rate

65

 

shall be readjusted as if such rights, options or warrants had not been issued and (y) the
Conversion Rate shall then again be readjusted to give effect to such distribution, deemed
distribution or Trigger Event, as the case may be, as though it were a cash distribution, equal to
the per share redemption or purchase price received by a holder or holders of Common Stock with
respect to such rights, options or warrants (assuming such holder had retained such rights, options
or warrants), made to all holders of Common Stock as of the date of such redemption or purchase,
and (2) in the case of such rights, options or warrants that shall have expired or been terminated
without exercise by any holders thereof, the Conversion Rate shall be readjusted as if such rights,
options and warrants had not been issued.

     For purposes of Section 14.04(a), Section 14.04(b) and this Section 14.04(c), any dividend or
distribution to which this Section 14.04(c) is applicable that also includes one or both of:

     (A) a dividend or distribution of shares of Common Stock to which Section 14.04(a) is
applicable (the “Clause A Distribution”); or

     (B) a dividend or distribution of rights, options or warrants to which Section 14.04(b) is
applicable (the “Clause B Distribution”),

then (1) such dividend or distribution, other than the Clause A Distribution and the Clause B
Distribution, shall be deemed to be a dividend or distribution to which this Section 14.04(c) is
applicable (the “Clause C Distribution”) and any Conversion Rate adjustment required by this
Section 14.04(c) with respect to such Clause C Distribution shall then be made, and (2) the Clause
A Distribution and Clause B Distribution shall be deemed to immediately follow the Clause C
Distribution and any Conversion Rate adjustment required by Section 14.04(a) and Section 14.04(b)
with respect thereto shall then be made, except that, if determined by the Company (I) the
“Ex-Dividend Date” of the Clause A Distribution and the Clause B Distribution shall be deemed to be
the Ex-Dividend Date of the Clause C Distribution and (II) any shares of Common Stock included in
the Clause A Distribution or Clause B Distribution shall be deemed not to be “outstanding
immediately prior to the open of business on such Ex-Dividend Date or Distribution Effective Date”
within the meaning of Section 14.04(a) or “outstanding immediately prior to the open of business on
such Ex-Dividend Date” within the meaning of Section 14.04(b).

     (d) If any cash dividend or distribution is made to all or substantially all holders of the
Common Stock, other than a regular, quarterly cash dividend that does not exceed $0.125 per share
(the “Initial Dividend Threshold”), the Conversion Rate shall be increased based on the following
formula:

where,

	 	 	 	 	 

	CR0

	 	=
	 	the Conversion Rate in effect immediately prior to
the open of business on the Ex-Dividend Date for
such dividend or distribution;

66

 

	 	 	 	 	 

	CR1

	 	=
	 	the Conversion Rate in effect immediately after
the open of business on the Ex-Dividend Date for
such dividend or distribution;
	 
	 	 	 	 
	SP0

	 	=
	 	the Last Reported Sale Price of the Common Stock
on the Trading Day immediately preceding the
Ex-Dividend Date for such dividend or
distribution;
	 
	 	 	 	 
	T

	 	=
	 	the Initial Dividend Threshold; provided that if
the dividend or distribution in question is not a
regular quarterly cash dividend, the Initial
Dividend Threshold shall be deemed to be zero; and
	 
	 	 	 	 
	C

	 	=
	 	the amount in cash per share that the Company
distributes to holders of the Common Stock.

The Initial Dividend Threshold shall be subject to concurrent adjustment in a manner inversely
proportional to adjustments to the Conversion Rate; provided that no adjustment shall be made to
the Initial Dividend Threshold for any adjustment to the Conversion Rate pursuant to this Section
14.04(d).

     Any such increase pursuant to this Section 14.04(d) shall become effective immediately after
the open of business on the Ex-Dividend Date for such dividend or distribution. Notwithstanding
the foregoing, if “C” (as defined above) is equal to or greater than “SP0” (as defined
above), in lieu of the foregoing increase, each Holder of a Note shall receive, for each $1,000
principal amount of Notes, at the same time and upon the same terms as holders of shares of the
Common Stock, the amount of cash that such Holder would have received if such Holder owned a number
of shares of Common Stock equal to the Conversion Rate on the Ex-Dividend Date for such cash
dividend or distribution. If such dividend or distribution is not so paid, the Conversion Rate
shall be decreased, effective as of the date the Board of Directors determines not to pay such
dividend or distribution, to the Conversion Rate that would then be in effect if such dividend or
distribution had not been declared.

     (e) If the Company or any of its Subsidiaries makes a payment in respect of a tender offer or
exchange offer for the Common Stock, and the cash and value of any other consideration included in
the payment per share of the Common Stock exceeds the Last Reported Sale Price of the Common Stock
on the Trading Day next succeeding the last date on which tenders or exchanges may be made pursuant
to such tender or exchange offer, the Conversion Rate shall be increased based on the following
formula:

where,

	 	 	 	 	 

	CR0

	 	=
	 	the Conversion Rate in effect immediately prior to
the open of business on the Trading Day next
succeeding the date such tender or exchange offer
expires;
	 
	 	 	 	 
	CR1

	 	=
	 	the Conversion Rate in effect immediately after
the open of business on the Trading Day next
succeeding the date such tender or exchange offer
expires;

67

 

	 	 	 	 	 

	AC

	 	=
	 	the aggregate value of all cash and any other
consideration (as determined by the Board of
Directors) paid or payable for shares of Common
Stock purchased in such tender or exchange offer;
	 
	 	 	 	 
	OS0

	 	=
	 	the number of shares of Common Stock outstanding
immediately prior to the date such tender or
exchange offer expires (prior to giving effect to
the purchase of all shares of Common Stock
accepted for purchase or exchange in such tender
offer or exchange offer);
	 
	 	 	 	 
	OS1

	 	=
	 	the number of shares of Common Stock outstanding
immediately after the date such tender or exchange
offer expires (after giving effect to the purchase
of all shares of Common Stock accepted for
purchase or exchange in such tender or exchange
offer); and
	 
	 	 	 	 
	SP1

	 	=
	 	the average of the Last Reported Sale Prices of
the Common Stock over the 10 consecutive Trading
Day period commencing on, and including, the
Trading Day next succeeding the date such tender
or exchange offer expires.

The adjustment to the Conversion Rate under this Section 14.04(e) shall be determined at the close
of business on the tenth Trading Day immediately following, and including, the Trading Day next
succeeding the date such tender or exchange offer expires but shall be given effect immediately
after the open of business on the Trading Day next succeeding the date such tender or exchange
offer expires; provided that in respect of any conversion within the 10 Trading Days immediately
following, and including, the Trading Day next succeeding the expiration date of any tender or
exchange offer, references in this Section 14.04(e) to 10 Trading Days shall be deemed replaced
with such lesser number of Trading Days as have elapsed from, and including, the Trading Day next
succeeding the date that such tender or exchange offer expires to, and including, the Conversion
Date for such conversion. If the Trading Day immediately following the date the tender or exchange
offer expires is less than 10 Trading Days prior to, and including, the end of the Observation
Period in respect of any conversion, references in this Section 14.04(e) to 10 Trading Days shall
be deemed replaced, for purposes of calculating the affected daily Conversion Rates in respect of
that conversion, with such lesser number of Trading Days as have elapsed from, and including, the
Trading Day immediately following the date such tender or exchange offer expires to, and including,
the last Trading Day of such Observation Period. In the event that the Company is, or one of the
Company’s Subsidiaries is, obligated to purchase shares of the Common Stock pursuant to any such
tender offer or exchange offer, but the Company is, or such Subsidiary is, permanently prevented by
applicable law from effecting any such purchases, or any such purchases are rescinded, then the
Conversion Rate shall be decreased to be the Conversion Rate which would then be in effect had the
increase with respect to such tender or exchange offer been made on the basis of the number of
shares of the Common Stock actually purchased or exchanged pursuant to such tender offer or
exchange offer. Except as set forth in the preceding sentence, if the application of this Section
14.04(e) to any tender offer or exchange offer would result in a decrease in the Conversion Rate,
no adjustment shall be made for such tender offer or exchange offer under this Section 14.04(e).

     (f) Notwithstanding this Section 14.04 or any other provision of this Indenture or the Notes,
if a Conversion Rate adjustment becomes effective on any Ex-Dividend Date, and a

68

 

Holder that has converted its Notes on or after such Ex-Dividend Date and on or prior to the
related Record Date would be treated as the record holder of the Common Stock as of the related
Conversion Date as described under Section 14.02(a)(iv) based on an adjusted Conversion Rate for
such Ex-Dividend Date, then, notwithstanding the Conversion Rate adjustment provisions in this
Section 14.04, the Conversion Rate adjustment relating to such Ex-Dividend Date shall not be made
for such converting Holder. Instead, such Holder shall be treated as if such Holder were the record
owner of a number of shares of Common Stock equal to the Conversion Rate on an unadjusted basis,
for each $1,000 principal amount of Notes, and participate in the related dividend, distribution or
other event giving rise to such adjustment.

     (g) Except as stated herein, the Company shall not adjust the Conversion Rate for the issuance
of shares of the Common Stock or any securities convertible into or exchangeable for shares of the
Common Stock or the right to purchase shares of the Common Stock or such convertible or
exchangeable securities.

     (h) In addition to those adjustments required by Section 14.03 and clauses (a), (b), (c), (d)
and (e) of this Section 14.04, and to the extent permitted by applicable law and the rules of the
NASDAQ Global Select Market and any other securities exchange on which any of the Company’s
securities are then listed, the Company from time to time may increase the Conversion Rate by any
amount for a period of at least 20 Business Days if the Board of Directors determines that such
increase would be in the Company’s best interest. In addition, the Company may (but is not
required to) increase the Conversion Rate to avoid or diminish any income tax to holders of Common
Stock or rights to purchase Common Stock in connection with a dividend or distribution of shares
(or rights to acquire shares) or similar event. Whenever the Conversion Rate is increased pursuant
to either of the preceding two sentences, the Company shall mail to the Holder of each Note at its
last address appearing on the Note Register a notice of such increase at least 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.

     (i) Notwithstanding anything to the contrary in this Article 14, the Conversion Rate shall not
be adjusted:

     (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 the Company’s
securities 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 or employee agreement or arrangement of or assumed by the Company or any of the
Company’s Subsidiaries;

     (iii) upon the issuance of any shares of the Common Stock pursuant to any option,
warrant, right or exercisable, exchangeable or convertible security not described in clause
(ii) of this subsection and outstanding as of the date the Notes were first issued;

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     (iv) upon the entry by the Company into any “additional warrant transactions” with one
or more of the Initial Purchasers or their respective affiliates if the Initial Purchasers
exercise their over-allotment option to purchase additional Notes pursuant to the second
paragraph of Section 2 of the Purchase Agreement, as described under the heading
“Description of convertible note hedge and warrant transactions” in the Offering Memorandum,
or upon the issuance of any shares of the Common Stock pursuant to any such additional
warrant transactions;

     (v) for a change solely in the par value of the Common Stock; or

     (vi) for accrued and unpaid interest, if any.

     (j) All calculations and other determinations under this Article 14 shall be made by the
Company and shall be made to the nearest one-ten thousandth (1/10,000) of a share. No adjustment
to the Conversion Rate shall be required under this Section 14.04 unless such adjustment would
require an increase or decrease of at least 1% of the Conversion Rate; provided that the Company
shall carry forward any adjustments that are less than 1% of the Conversion Rate that the Company
elects not to make and make such carried-forward adjustments upon (1) each of the 40 days of any
Observation Period with respect any conversion of the Notes (or, in the case of Physical
Settlement, any Conversion Date), (2) the occurrence of a Fundamental Change, (3) the Maturity Date
and (4) such time as all adjustments that have not been made prior thereto would have the effect of
adjusting the Conversion Rate by at least 1%.

     (k) Whenever the Conversion Rate is adjusted as herein provided, the Company shall promptly
file with the Trustee (and the Conversion Agent if not 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 without inquiry 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 each Holder at its last address appearing on the Note
Register provided for in this Indenture. Failure to deliver such notice shall not affect the
legality or validity of any such adjustment.

     (l) For purposes of this Section 14.04, the number of shares of Common Stock at any time
outstanding shall not include shares held in the treasury of the Company so long as the Company
does not pay any dividend or make any distribution on shares of Common Stock 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.

     Section 14.05. Adjustments of Prices. Whenever any provision of this Indenture requires the
Company to calculate the Last Reported Sale Prices, the Daily VWAPs, the Daily Conversion Values or
the Daily Settlement Amounts over a span of multiple days (including an Observation Period, a
Merger Valuation Period and the period for determining the Stock Price for purposes of a Make-Whole
Fundamental Change), the Board of Directors shall make

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appropriate adjustments to each to account for any adjustment to the Conversion Rate that
becomes effective, or any event requiring an adjustment to the Conversion Rate where the
Ex-Dividend Date of the event occurs, at any time during the period when the Last Reported Sale
Prices, the Daily VWAPs, the Daily Conversion Values or the Daily Settlement Amounts are to be
calculated.

     Section 14.06. Shares to Be Fully Paid. The Company shall provide at all times, free from
preemptive rights, out of its authorized but unissued shares or shares held in treasury, a number
of shares of Common Stock equal to (a) 46.3821, subject to adjustment in the same manner as the
Conversion Rate pursuant to Section 14.04 and subject to Section 14.12, multiplied by (b)(i) the
aggregate principal amount of Notes then outstanding, divided by (ii) $1,000, for the purpose of
providing for conversion of the Notes from time to time as such Notes are presented for conversion.

     Section 14.07. Effect of Recapitalizations, Reclassifications and Changes of Common Stock.

     (a) In the case of:

     (i) any recapitalization, reclassification or change of the Common Stock (other than
changes resulting from a share split or share combination),

     (ii) any consolidation, merger or combination involving the Company,

     (iii) any sale, lease or other transfer to a third party of the consolidated assets of
the Company substantially as an entirety or

     (iv) any statutory share exchange,

in each case as a result of which the Common Stock would be converted into, or exchanged for,
stock, other securities or other property or assets (including cash or any combination thereof)
(any such event, a “Merger Event”), then, at and after the effective time of such Merger Event, the
right to convert each $1,000 principal amount of Notes shall be changed into a right to convert
such principal amount of Notes into the kind and amount of shares of stock or other securities or
other property or assets (including cash or any combination thereof) that a holder of a number of
shares of Common Stock equal to the Conversion Rate immediately prior to such Merger Event would
have owned or been entitled to receive (the “Reference Property”, with each “unit of Reference
Property” meaning the kind and amount of Reference Property that a holder of one share of Common
Stock is entitled to receive) upon such Merger Event and, prior to or at the effective time of such
Merger Event, the Company or the successor or purchasing Person, as the case may be, shall execute
with the Trustee a supplemental indenture permitted under Section 10.01(f) providing for such
change in the right to convert each $1,000 principal amount of Notes; provided, however, that at
and after the effective time of such Merger Event (A) the Company shall continue to have the right
to determine the Settlement Method upon conversion of Notes in accordance with Section 14.02 and
(B) (I) any amount payable in cash upon conversion of the Notes in accordance with Section 14.02
shall continue to be payable in cash, (II) any shares of Common Stock that the Company would have
been required to deliver

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upon conversion of the Notes in accordance with Section 14.02 shall instead be deliverable in
the amount and type of Reference Property that a holder of that number of shares of Common Stock
would have been entitled to receive in such Merger Event and (III) the Daily VWAP shall be
calculated based on the value of a unit of Reference Property.

     If such Merger Event causes the Common Stock to be converted into, or exchanged for, the right
to receive more than a single type of consideration (determined based in part upon any form of
stockholder election), then (i) the Reference Property into which the Notes will be convertible or
that will be used to calculate the Daily VWAP, as the case may be, shall be deemed to be the
weighted average of the types and amounts of consideration received by the holders of Common Stock
that affirmatively make such an election, and (ii) the unit of Reference Property for purposes of
the immediately preceding paragraph shall refer to the consideration referred to in clause (i)
attributable to one share of Common Stock. If the holders receive only cash in such Merger Event,
then for all conversions that occur after the effective date of such Merger Event (x) the
consideration due upon conversion of each $1,000 principal amount of Notes shall be solely cash in
an amount equal to the Conversion Rate in effect on the Conversion Date (as may be increased by any
Additional Shares pursuant to Section 14.03), multiplied by the price per share of Common Stock in
such Merger Event and (y) the Company shall satisfy the Conversion Obligation by paying cash to
converting Holders on the third Scheduled Trading Day immediately following the Conversion Date.
The Company shall notify in writing all Holders, the Trustee and the Conversion Agent (if other
than the Trustee) of such weighted average as soon as practicable after such determination is made.

     Such supplemental indenture described in the second immediately preceding paragraph shall
provide for adjustments that shall be as nearly equivalent as is possible to the adjustments
provided for in this Article 14. If, in the case of any Merger Event, the Reference Property
includes shares of stock, securities or other property or assets (including cash or any combination
thereof) of a Person other than the successor or purchasing corporation, as the case may be, in
such Merger Event, then such supplemental indenture shall also be executed by such other Person and
shall contain such additional provisions to protect the interests of the Holders of the Notes as
the Board of Directors shall reasonably consider necessary by reason of the foregoing, including to
the extent required by the Board of Directors and practicable the provisions providing for the
purchase rights set forth in Article 15.

     (b) In the event the Company shall execute a supplemental indenture pursuant to Section
14.07(a), the Company shall promptly file with the Trustee an Officers’ Certificate briefly stating
the reasons therefore, the kind or amount of cash, securities or property or asset that will
comprise the Reference Property after any such Merger Event, any adjustment to be made with respect
thereto and that all conditions precedent have been complied with, and shall promptly mail notice
thereof to all Holders. The Company shall cause notice of the execution of such supplemental
indenture to be mailed to each Holder, at its address appearing on the Note Register provided for
in this Indenture, within 20 days after execution thereof. Failure to deliver such notice shall
not affect the legality or validity of such supplemental indenture.

     (c) The Company shall not become a party to any Merger Event unless its terms are consistent
with this Section 14.07. None of the foregoing provisions shall affect any right that a holder of
Notes may have to convert its Notes into cash, shares of Common Stock or a

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combination of cash and shares of Common Stock, as applicable, as set forth in Section 14.01
and Section 14.02 prior to the effective date of such Merger Event.

     (d) The above provisions of this Section shall similarly apply to successive Merger Events.

     (e) In connection with any Merger Event, the Initial Dividend Threshold shall be subject to
adjustment as described in clause (i), clause (ii) or clause (iii) below, as the case may be.

     (i) In the case of a Merger Event in which the Reference Property (determined, as
appropriate, pursuant to subsection (a) above and excluding any dissenters’ appraisal
rights) is composed entirely of shares of common stock (the “Merger Common Stock”), the
Initial Dividend Threshold at and after the effective time of such Merger Event shall be
equal to (x) the Initial Dividend Threshold immediately prior to the effective time of such
Merger Event divided by (y) the number of shares of Merger Common Stock that a holder of one
share of Common Stock would receive in such Merger Event (such quotient rounded down to
nearest cent).

     (ii) In the case of a Merger Event in which the Reference Property (determined, as
appropriate, pursuant to subsection (a) above and excluding any dissenters’ appraisal
rights) is composed in part of shares of Merger Common Stock, the Initial Dividend Threshold
at and after the effective time of such Merger Event shall be equal to (x) the Initial
Dividend Threshold immediately prior to the effective time of such Merger Event multiplied
by (y) the Merger Valuation Percentage for such Merger Event (such product rounded down to
nearest cent).

     (iii) For the avoidance of doubt, in the case of a Merger Event in which the Reference
Property (determined, as appropriate, pursuant to subsection (a) above and excluding any
dissenters’ appraisal rights) is composed entirely of consideration other than shares of
common stock, the Initial Dividend Threshold at and after the effective time of such Merger
Event shall be equal to zero.

     (f) For purposes of subsection (e) of this Section 14.07, the following terms shall have the
following meanings:

     (i) The “Merger Valuation Percentage” for any Merger Event shall be equal to (x) the
arithmetic average of the Last Reported Sale Prices of one share of such Merger Common Stock
over the relevant Merger Valuation Period (determined as if references to “Common Stock” in
the definition of “Last Reported Sale Price” were references to the “Merger Common Stock”
for such Merger Event) divided by (y) the arithmetic average of the Last Reported Sale
Prices of one share of Common Stock over the relevant Merger Valuation Period.

     (ii) The “Merger Valuation Period” for any Merger Event means the five consecutive
Trading Day period immediately preceding, but excluding, the effective date for such Merger
Event.

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     Section 14.08. Certain Covenants. (a) The Company covenants that all shares of Common Stock
issued upon conversion of Notes will be fully paid and non-assessable by the Company and free from
all taxes, liens and charges with respect to the issue thereof.

     (b) The Company covenants that, if any shares of Common Stock to be provided for the purpose
of conversion of Notes hereunder require registration with or approval of any governmental
authority under any federal or state law before such shares may be validly issued upon conversion,
the Company will, to the extent then permitted by the rules and interpretations of the Commission,
secure such registration or approval, as the case may be.

     (c) The Company further covenants that if at any time the Common Stock shall be listed on any
national or regional securities exchange or automated quotation system the Company will list and
keep listed, so long as the Common Stock shall be so listed on such exchange or automated quotation
system, any Common Stock issuable upon conversion of the Notes.

     Section 14.09. Responsibility of Trustee. The Trustee and any other Conversion Agent shall
not at any time be under any duty or responsibility to any Holder to determine the Conversion Rate
(or any adjustment thereto) or whether any facts exist that may require any adjustment (including
any increase) 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, property or cash that may at any time be issued or
delivered upon the conversion of any Note; 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 Note for
the purpose of conversion or to comply with any of the duties, responsibilities or covenants of the
Company contained in this Article 14. 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 14.07
relating either to the kind or amount of shares of stock or securities or property (including cash)
receivable by Holders upon the conversion of their Notes after any event referred to in such
Section 14.07 or to any adjustment to be made with respect thereto, but, subject to the provisions
of Section 7.01, may accept (without any independent investigation) as conclusive evidence of the
correctness of any such provisions, and shall be protected in conclusively 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. Neither the Trustee nor the
Conversion Agent shall be responsible for determining whether any event contemplated by Section
14.01(b) has occurred that makes the Notes eligible for conversion or no longer eligible therefor
until the Company has delivered to the Trustee and the Conversion Agent the notices referred to in
Section 14.01(b) with respect to the commencement or termination of such conversion rights, on
which notices the Trustee and the Conversion Agent may conclusively rely, and the Company

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agrees to deliver such notices to the Trustee and the Conversion Agent immediately after the
occurrence of any such event or at such other times as shall be provided for in Section 14.01(b).

     Section 14.10. Notice to Holders Prior to Certain Actions. In case of any:

     (a) action by the Company or one of its Subsidiaries that would require an adjustment in the
Conversion Rate pursuant to Section 14.04 or Section 14.11; or

     (b) Merger Event; or

     (c) voluntary or involuntary dissolution, liquidation or winding-up of the Company or any of
its Subsidiaries;

then, in each case (unless notice of such event is otherwise required pursuant to another provision
of this Indenture), the Company shall cause to be filed with the Trustee and the Conversion Agent
(if other than the Trustee) and to be mailed to each Holder at its address appearing on the Note
Register, as promptly as possible but in any event at least 20 days prior to the applicable date
hereinafter specified, a notice stating (i) the date on which a record is to be taken for the
purpose of such action by the Company or one of its Subsidiaries or, if a record is not to be
taken, the date as of which the holders of Common Stock of record are to be determined for the
purposes of such action by the Company or one of its Subsidiaries, or (ii) the date on which such
Merger Event, 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 Merger Event,
dissolution, liquidation or winding-up. Failure to give such notice, or any defect therein, shall
not affect the legality or validity of such action by the Company or one of its Subsidiaries,
Merger Event, dissolution, liquidation or winding-up.

     Section 14.11. Stockholder Rights Plans. To the extent that the Company has a rights plan in
effect upon conversion of the Notes, each share of Common Stock, if any, issued upon such
conversion shall be entitled to receive the appropriate number of rights, if any, and the
certificates representing the Common Stock issued upon such conversion shall bear such legends, if
any, in each case as may be provided by the terms of any such stockholder rights plan, as the same
may be amended from time to time. If at the time of conversion, however, the rights have separated
from the shares of Common Stock in accordance with the provisions of the applicable stockholder
rights plan so that the Holders would not be entitled to receive any rights in respect of Common
Stock, if any, issuable upon conversion of the Notes, the Conversion Rate shall be adjusted at the
time of separation as if the Company distributed to all holders of Common Stock, shares of Capital
Stock of the Company, evidences of indebtedness, assets, property, rights, options or warrants as
provided in Section 14.04(c), subject to readjustment in the event of the expiration, termination
or redemption of such rights.

     Section 14.12. Limit on Issuance of Shares of Common Stock Upon Conversion. Notwithstanding
anything to the contrary in this Indenture, if an event (other than a share split) occurs that
results in an increase in the Conversion Rate that would potentially result in the issuance by the
Company, upon conversion of the Notes, of 20% or more of the outstanding Common Stock immediately
prior to the issuance of Notes, the Company shall, at its option,

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either obtain stockholder approval of any issuance of Common Stock upon conversion of the
Notes in excess such limitation or deliver cash in lieu of any shares of Common Stock otherwise
deliverable upon conversions in excess of such limitation based on the Daily VWAP of the Common
Stock on each Trading Day of the relevant Observation Period in respect of which, in lieu of
delivering shares of Common Stock, the Company delivers cash pursuant to this Section 14.12.

ARTICLE 15

Purchase of Notes at Option of Holders

     Section 15.01. Intentionally Omitted.

     Section 15.02. Purchase at Option of Holders Upon a Fundamental Change. (a) If a
Fundamental Change occurs at any time, then each Holder shall have the right, at such Holder’s
option, to require the Company to purchase for cash all of such Holder’s Notes, or any portion of
the principal amount thereof that is equal to $1,000 or an integral multiple of $1,000, on the date
(the “Fundamental Change Purchase Date”) specified by the Company, which shall not be less than 15
calendar days or more than 35 calendar days following the date of the Fundamental Change Company
Notice at a purchase price equal to 100% of the principal amount of such Notes or such portion of
the principal amount of Notes, as applicable, plus accrued and unpaid interest, if any, thereon to
but excluding the Fundamental Change Purchase Date (the “Fundamental Change Purchase Price”),
unless the Fundamental Change Purchase Date occurs after a Regular Record Date and on or prior to
the Interest Payment Date to which such Regular Record Date relates, in which case the Company
shall instead pay the full amount of accrued and unpaid interest, if any, to Holders of record as
of such Regular Record Date and the Fundamental Change Purchase Price shall be equal to 100% of the
principal amount of Notes or portions thereof, as applicable, to be purchased pursuant to this
Article 15.

     (b) Purchases of Notes under this Section 15.02 shall be made, at the option of the Holder
thereof, upon:

     (i) delivery to the Paying Agent by such Holder of a duly completed notice (the
“Fundamental Change Purchase Notice”) in the form set forth in Attachment 2 to the Form of
Note attached hereto as Exhibit A, if the Notes are Physical Notes, or in compliance with
the Depositary’s procedures for surrendering interests in Global Notes, if the Notes are
Global Notes, in each case on or before the close of business on the Business Day
immediately preceding the Fundamental Change Purchase Date; and

     (ii) delivery of the Notes, if the Notes are Physical Notes, to the Paying Agent at any
time after delivery of the Fundamental Change Purchase Notice (together with all necessary
endorsements for transfer) at the Corporate Trust Office of the Paying Agent, or book-entry
transfer of the Notes, if the Notes are Global Notes, in compliance with the procedures of
the Depositary, in each case such delivery being a condition to receipt by the Holder of the
Fundamental Change Purchase Price therefor.

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     The Fundamental Change Purchase Notice in respect of any Notes to be purchased shall state:

     (i) in the case of Physical Notes, the certificate numbers of the Notes to be delivered
for purchase;

     (ii) the portion of the principal amount of Notes to be purchased, which must be $1,000
or an integral multiple thereof; and

     (iii) that the Notes are to be purchased by the Company pursuant to this Section 15.02;

provided, however, that if the Notes are Global Notes, the Fundamental Change Purchase Notice must
comply with appropriate Depositary procedures.

     Notwithstanding anything herein to the contrary, any Holder delivering to the Paying Agent the
Fundamental Change Purchase Notice contemplated by this Section 15.02 shall have the right to
withdraw, in whole or in part, such Fundamental Change Purchase Notice at any time prior to the
close of business on the Business Day immediately preceding the Fundamental Change Purchase Date by
delivery of a written notice of withdrawal to the Paying Agent in accordance with Section 15.03.

     The Paying Agent shall promptly notify the Company of the receipt by it of any Fundamental
Change Purchase Notice or written notice of withdrawal thereof.

     (c) On or before the 10th calendar day after the occurrence of the effective date of a
Fundamental Change, the Company shall provide to all Holders of Notes and the Trustee and the
Paying Agent (if other than the Trustee) a notice (the “Fundamental Change Company Notice”) of the
occurrence of the effective date of such Fundamental Change and of the purchase right at the option
of the Holders arising as a result thereof. Such notice shall be by first class mail or, in the
case of Global Notes, in accordance with the applicable procedures of the Depositary.
Simultaneously with providing such notice, the Company shall issue a press release containing the
information set forth in such Fundamental Change Company Notice or publish such information on the
Company’s website or through such other public medium as the Company may use at that time. Each
Fundamental Change Company Notice shall specify:

     (i) the events causing the Fundamental Change;

     (ii) the effective date of the Fundamental Change;

     (iii) the last date on which a Holder may exercise the purchase right pursuant to this
Article 15;

     (iv) the Fundamental Change Purchase Price;

     (v) the Fundamental Change Purchase Date;

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     (vi) the name and address of the Paying Agent and the Conversion Agent, if applicable;

     (vii) the Conversion Rate and, if applicable, any adjustments to the Conversion Rate;

     (viii) if applicable, that the Notes with respect to which a Fundamental Change
Purchase Notice has been delivered by a Holder may be converted only if the Holder withdraws
the Fundamental Change Purchase Notice in accordance with the terms of this Indenture; and

     (ix) the procedures that Holders must follow to require the Company to purchase their
Notes.

     No failure of the Company to give the foregoing notices and no defect therein shall limit the
Holders’ purchase rights or affect the validity of the proceedings for the purchase of the Notes
pursuant to this Section 15.02.

     At the Company’s written request, the Trustee shall give such notice in the Company’s name and
at the Company’s expense; provided, however, that, in all cases, the text of such Fundamental
Change Company Notice shall be prepared by the Company.

     (d) Notwithstanding the foregoing, no Notes may be purchased by the Company on any date at the
option of the Holders upon a Fundamental Change if the principal amount of the Notes has been
accelerated, and such acceleration has not been rescinded, on or prior to such date (except in the
case of an acceleration resulting from a Default by the Company in the payment of the Fundamental
Change Purchase Price with respect to such Notes). The Paying Agent shall promptly return to the
respective Holders thereof any Physical Notes held by it during the acceleration of the Notes and
shall deem to be cancelled any instructions for book-entry transfer of the Notes to the Paying
Agent in compliance with the procedures of the Depositary (except in the case of an acceleration
resulting from a Default by the Company in the payment of the Fundamental Change Purchase Price
with respect to such Notes), in which case, upon such return or cancellation, as the case may be,
the Fundamental Change Purchase Notice with respect thereto shall be deemed to have been withdrawn.

     Section 15.03. Withdrawal of Fundamental Change Purchase Notice. (a) A Fundamental Change
Purchase Notice may be withdrawn (in whole or in part) by means of a written notice of withdrawal
delivered to the Paying Agent in accordance with this Section 15.03 at any time prior to the close
of business on the Business Day immediately preceding the Fundamental Change Purchase Date,
specifying:

     (i) the principal amount of the Notes with respect to which such notice of withdrawal
is being submitted,

     (ii) if such Notes are Physical Notes, the certificate numbers of such Notes, and

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     (iii) the principal amount, if any, of such Notes that remains subject to the original
Fundamental Change Purchase Notice, which portion must be in principal amounts of $1,000 or
an integral multiple of $1,000;

provided, however, that if the Notes are Global Notes, the notice must comply with appropriate
procedures of the Depositary.

     Section 15.04. Deposit of Fundamental Change Purchase Price. (a) The Company shall deposit
with the Trustee (or other Paying Agent appointed by the Company, or if the Company is acting as
its own Paying Agent, set aside, segregate and hold in trust as provided in Section 4.04) on or
prior to 11:00 a.m., New York City time, on the Fundamental Change Purchase Date an amount of money
sufficient to purchase all of the Notes to be purchased at the appropriate Fundamental Change
Purchase Price. Subject to receipt of funds and/or Notes by the Trustee (or other Paying Agent
appointed by the Company), payment for Notes surrendered for purchase (and not withdrawn prior to
the close of business on the Business Day immediately preceding the Fundamental Change Purchase
Date) will be made on the later of (i) the Fundamental Change Purchase Date with respect to such
Note (provided the Holder has satisfied the conditions in Section 15.02) and (ii) the time of
book-entry transfer or the delivery of such Note to the Trustee (or other Paying Agent appointed by
the Company) by the Holder thereof in the manner required by Section 15.02 by mailing checks for
the amount payable to the Holders of such Notes entitled thereto as they shall appear in the Note
Register, provided, however, that payments to the Depositary shall be made by wire transfer of
immediately available funds to the account of the Depositary or its nominee. The Trustee shall,
promptly after such payment and upon written demand by the Company, return to the Company any funds
in excess of the Fundamental Change Purchase Price.

     (b) If by 11:00 a.m. New York City time, on the Fundamental Change Purchase Date, the Trustee
(or other Paying Agent appointed by the Company) holds money sufficient to make payment on all the
Notes or portions thereof that are to be purchased on such Fundamental Change Purchase Date, then
(i) such Notes shall cease to be outstanding, (ii) interest shall cease to accrue on such Notes
(whether or not book-entry transfer of the Notes has been made or the Notes have been delivered to
the Trustee or Paying Agent) and (iii) all other rights of the Holders of such Notes will terminate
(other than the right to receive the Fundamental Change Purchase Price upon delivery of the Notes).

     (c) Upon surrender of a Note that is to be purchased in part pursuant to Section 15.02, the
Company shall execute and the Trustee shall authenticate and deliver to the Holder a new Note in an
authorized denomination equal in principal amount to the non-purchased portion of the Note
surrendered.

     Section 15.05. Covenant to Comply with Applicable Laws Upon Purchase of Notes. In connection
with any purchase offer pursuant to Section 15.02, the Company shall, if required thereby:

     (a) comply with the provisions of Rule 13e-4, Rule 14e-1 and any other tender offer rules
under the Exchange Act that may then be applicable;

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     (b) file a Schedule TO or any successor or similar schedule; and

     (c) otherwise comply with all federal and state securities laws in connection with any offer
by the Company to purchase the Notes;

in each case, so as to permit the rights and obligations under this Article 15 to be exercised in
the time and in the manner specified in this Article 15.

ARTICLE 16

No Redemption

     Section 16.01. No Redemption. The Notes shall not be redeemable by the Company prior to the
Maturity Date, and no sinking fund is provided for the Notes.

ARTICLE 17

Miscellaneous Provisions

     Section 17.01. Provisions Binding on Company’s Successors. All the covenants, stipulations,
promises and agreements of the Company contained in this Indenture shall bind its successors and
assigns whether so expressed or not.

     Section 17.02. 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 corporation or other entity that shall at the time be the
lawful sole successor of the Company.

     Section 17.03. Addresses for Notices, Etc. Any notice or demand that by any provision of
this Indenture is required or permitted to be given or served by the Trustee or by the Holders on
the Company shall be deemed to have been sufficiently given or made, for all purposes if given in
writing (including telecopy) or served by being deposited postage prepaid by registered or
certified mail in a post office letter box addressed (until another address is filed by the Company
with the Trustee) to Tower Group, Inc., 120 Broadway, 31st Floor, New York, NY 10271,
Attention: General Counsel. 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 addressed to the Corporate Trust Office.

     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 Holder shall be mailed to it by first class mail,
postage prepaid, at its address as it appears on the Note Register and shall be sufficiently given
to it if so mailed within the time prescribed.

80

 

     Failure to mail a notice or communication to a Holder or any defect in it shall not affect its
sufficiency with respect to other Holders. If a notice or communication is mailed in the manner
provided above, it is duly given, whether or not the addressee receives it.

     In case by reason of the suspension of regular mail service or by reason of any other cause it
shall be impracticable to give such notice to Holders by mail, then such notification as shall be
made with the approval of the Trustee shall constitute a sufficient notification for every purpose
hereunder.

     Section 17.04. Governing Law. THIS INDENTURE AND EACH NOTE SHALL BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

     Section 17.05. Evidence of Compliance with Conditions Precedent; Certificates and Opinions of
Counsel 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, if requested by the
Trustee, furnish to the Trustee an Officers’ Certificate stating that such action is permitted by
the terms of this Indenture.

     Each Officers’ Certificate provided for by or on behalf of the Company in this Indenture and
delivered to the Trustee with respect to compliance with this Indenture (other than the Officers’
Certificates provided for in Section 4.08) shall include (a) a statement that the Person making
such certificate is familiar with the requested action and this Indenture; (b) a brief statement as
to the nature and scope of the examination or investigation upon which the statement contained in
such certificate is based; (c) a statement that, in the judgment of such person, he or she has made
such examination or investigation as is necessary to enable him or her to express an informed
judgment as to whether or not such action is permitted by this Indenture; and (d) a statement as to
whether or not, in the judgment of such Person, such action is permitted by this Indenture.

     Notwithstanding anything to the contrary in this Section 17.05, if any provision in this
Indenture specifically provides that the Trustee shall or may receive an Opinion of Counsel in
connection with any action to be taken by the Trustee or the Company hereunder, the Trustee shall
be entitled to, or entitled to request, such Opinion of Counsel.

     Section 17.06. Legal Holidays. In any case where any Interest Payment Date, Fundamental
Change Purchase Date, Conversion Date or the Maturity Date is not a Business Day, then any action
to be taken on such date need not be taken on such date, but may be taken on the next succeeding
Business Day with the same force and effect as if taken on such date, and no interest shall accrue
in respect of the delay.

     Section 17.07. No Security Interest Created. Nothing in this Indenture or in the Notes,
expressed or implied, shall be construed to constitute a security interest under the Uniform
Commercial Code or similar legislation, as now or hereafter enacted and in effect, in any
jurisdiction.

81

 

     Section 17.08. Benefits of Indenture. Nothing in this Indenture or in the Notes, expressed
or implied, shall give to any Person, other than the parties hereto, any Paying Agent, any
Conversion Agent, any authenticating agent, any Note Registrar and their successors hereunder or
the Holders, any benefit or any legal or equitable right, remedy or claim under this Indenture.

     Section 17.09. 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 17.10. 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 Notes in connection with the original issuance thereof and transfers and exchanges of
Notes hereunder, including under Section 2.04, Section 2.05, Section 2.06, Section 2.07, Section
10.04 and Section 15.04 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 Notes.
For all purposes of this Indenture, the authentication and delivery of Notes by the authenticating
agent shall be deemed to be authentication and delivery of such Notes “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 Notes 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 7.08.

     Any corporation or other entity into which any authenticating agent may be merged or converted
or with which it may be consolidated, or any corporation or other entity resulting from any merger,
consolidation or conversion to which any authenticating agent shall be a party, or any corporation
or other entity succeeding to all or substantially all of the corporate trust business of any
authenticating agent, shall be the successor of the authenticating agent hereunder, if such
successor corporation or other entity is otherwise eligible under this Section 17.10, 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 or other entity.

     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, the Trustee may appoint a
successor authenticating agent (which may be the Trustee), shall give written notice of such
appointment to the Company and shall mail notice of such appointment to all Holders as the names
and addresses of such Holders appear on the Note Register.

     The Company agrees to pay to the authenticating agent from time to time reasonable
compensation for its services although the Company may terminate the authenticating agent, if it
determines such agent’s fees to be unreasonable.

82

 

     The provisions of Section 7.02, Section 7.03, Section 7.04, Section 8.03 and this Section
17.10 shall be applicable to any authenticating agent.

     If an authenticating agent is appointed pursuant to this Section, the Notes may have endorsed
thereon, in addition to the Trustee’s certificate of authentication, an alternative certificate of
authentication in the following form:

______________________________________,

as Authenticating Agent, certifies that this is one of the Notes described
in the within-named Indenture.

					
	 	
 	 
	 	By:  	 	 
	 	 	Authorized Signatory 	 

     Section 17.11. Execution in Counterparts. This Indenture may be executed in two or more
counterparts, each of which shall be an original, which when so executed shall constitute one and
the same agreement. The exchange of copies of this Indenture and of signature pages by facsimile
or PDF transmission shall constitute effective execution and delivery of this Indenture as to the
parties hereto and may be used in lieu of the original Indenture for all purposes. Signatures of
the parties hereto transmitted by facsimile or PDF shall be deemed to be their original signatures
for all purposes.

     Section 17.12. Severability. In the event any provision of this Indenture or in the Notes
shall be invalid, illegal or unenforceable, then (to the extent permitted by law) the validity,
legality or enforceability of the remaining provisions shall not in any way be affected or
impaired.

     Section 17.13. Waiver of Jury Trial. EACH OF THE COMPANY AND THE TRUSTEE HEREBY IRREVOCABLY
WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN
ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS INDENTURE, THE NOTES OR THE TRANSACTION
CONTEMPLATED HEREBY.

     Section 17.14. Force Majeure. In no event shall the Trustee be responsible or liable for any
failure or delay in the performance of its obligations hereunder arising out of or caused by,
directly or indirectly, forces beyond its control, including, without limitation, strikes, work
stoppages, accidents, acts of war or terrorism, civil or military disturbances, nuclear or natural
catastrophes or acts of God, and interruptions, loss or malfunctions of utilities, communications
or computer (software and hardware) services; it being understood that the Trustee shall use
reasonable efforts that are consistent with accepted practices in the banking industry to resume
performance as soon as practicable under the circumstances.

     Section 17.15. Calculations. Except as otherwise provided herein, the Company shall be
responsible for making all calculations called for under the Notes. These calculations include,
but are not limited to, determinations of the Last Reported Sale Prices of the Common Stock,
accrued interest payable on the Notes, the number of Additional Shares (if any) and the Conversion
Rate of the Notes. The Company shall make all of these calculations in good faith

83

 

and, absent manifest error, the Company’s calculations shall be final and binding on Holders
of Notes. The Company shall provide a schedule of its calculations to each of the Trustee and the
Conversion Agent, and each of the Trustee and Conversion Agent is entitled to rely conclusively
upon the accuracy of the Company’s calculations without independent verification. The Trustee will
forward the Company’s calculations to any Holder of Notes upon the written request of that Holder
at the sole cost and expense of the Company.

     Section 17.16. U.S.A. Patriot Act. The parties hereto acknowledge that in accordance with
Section 326 of the U.S.A. Patriot Act, the Trustee, like all financial institutions and in order to
help fight the funding of terrorism and money laundering is required to obtain, verify, and record
information that identifies each person or legal entity that establishes a relationship or opens an
account with the Trustee. The parties to this Indenture agree that they will provide the Trustee
with such information as it may request in order for the Trustee to satisfy the requirements of the
U.S.A. Patriot Act.

84

 

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

	 	 	 	 	 
	 	TOWER GROUP, INC.

 	 
	 	By:  	/s/ William E. Hitselberger
 	 
	 	 	Name:  	William E. Hitselberger 	 
	 	 	Title:  	Senior Vice President and

Chief Financial Officer 	 
	 
	 	U.S. BANK NATIONAL
 ASSOCIATION, 
as Trustee
 	 
	 
	 	By:  	/s/ William G. Keenan
 	 
	 	 	Name:  	William G. Keenan 	 
	 	 	Title:  	Vice President 	 
	 

 

 

EXHIBIT A

FORM OF
FACE OF NOTE

INCLUDE FOLLOWING LEGEND IF A GLOBAL NOTE

     UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
COMPANY, A NEW YORK CORPORATION (“DTC”), 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 IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE
& CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), 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 FOLLOWING LEGEND IF A RESTRICTED SECURITY*

     THIS SECURITY AND THE COMMON STOCK, IF ANY, ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND MAY NOT BE
OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE WITH THE FOLLOWING SENTENCE.
BY ITS ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST HEREIN, THE ACQUIRER:

     (1) REPRESENTS THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS A “QUALIFIED
INSTITUTIONAL BUYER” (WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT) AND THAT IT
EXERCISES SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT,

     (2) REPRESENTS BY ITS PURCHASE AND HOLDING OF THIS SECURITY THAT (A) THE ACQUISITION
AND HOLDING OF THIS SECURITY AND POTENTIAL CONVERSION OF THIS SECURITY IS NOT MADE ON BEHALF
OF OR WITH “PLAN ASSETS” OF ANY PLAN SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME
SECURITY ACT OF 1974, AS AMENDED (“ERISA”), SECTION 4975 OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE “CODE”) OR ANY SIMILAR LAW OR (B) THE

 

			
	*	 	This legend shall be deemed removed from the
face of this Note without further action of the Company, the Trustee or the
Holders of this Note at such time as (1) the Company has delivered the Free
Transferability Certificate to the Trustee pursuant to Section 2.11 of the
Indenture and (2) the Resale Restriction Termination Date has occurred.

A-1

 

ACQUISITION AND HOLDING OF THIS
SECURITY AND POTENTIAL CONVERSION OF THIS SECURITY WILL NOT RESULT IN A NON-EXEMPT
PROHIBITED TRANSACTION UNDER SECTION 406 OF ERISA, SECTION 4975 OF THE CODE OR ANY
SIMILAR LAW, AND

     (3) AGREES FOR THE BENEFIT OF THE COMPANY THAT IT WILL NOT OFFER, SELL, PLEDGE OR
OTHERWISE TRANSFER THIS SECURITY OR ANY BENEFICIAL INTEREST HEREIN PRIOR TO THE DATE THAT IS
THE LATER OF (X) ONE YEAR AFTER THE LAST ORIGINAL ISSUE DATE HEREOF OR SUCH OTHER PERIOD OF
TIME AS PERMITTED BY RULE 144 UNDER THE SECURITIES ACT OR ANY SUCCESSOR PROVISION THERETO
AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE REQUIRED BY APPLICABLE LAW, EXCEPT:

     (A) TO TOWER GROUP, INC. (THE “COMPANY”) OR ANY SUBSIDIARY THEREOF, OR

     (B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BECOME EFFECTIVE UNDER THE
SECURITIES ACT, OR

     (C) TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE
SECURITIES ACT, OR

     (D) PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE
SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS
OF THE SECURITIES ACT.

     PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH (3)(D) ABOVE, THE COMPANY AND THE
TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER
EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING
MADE IN COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION
IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE
SECURITIES ACT.

A-2

 

TOWER GROUP, INC.

5.00% Convertible Senior Note due 2014

	 	 	 

	No. [_____]

	 	Initially $[           ]

CUSIP No. 891777 AB0

ISIN No. US891777AB00*

     TOWER GROUP, INC., a corporation duly organized and validly existing under the laws of the
State of Delaware (the “Company,” which term includes any successor corporation or other entity
under the Indenture referred to on the reverse hereof), for value received hereby promises to pay
to CEDE & CO., or registered assigns, the principal sum as set forth in the “Schedule of Exchanges
of Notes” attached hereto, which amount, taken together with the principal amounts of all other
outstanding Notes, shall not, unless permitted by the Indenture, exceed $150,000,000 in aggregate
at any time, in accordance with the rules and procedures of the Depositary, on September 15, 2014,
and interest thereon as set forth below.

     This Note shall bear interest at the rate of 5.00% per year from September 20, 2010, or from
the most recent date on which interest has been paid or provided for to, but excluding, the next
scheduled Interest Payment Date until September 15, 2014. Interest is payable semi-annually in
arrears on each March 15 and September 15, commencing on March 15, 2011, to Holders of record at
the close of business on the immediately preceding March 1 or September 1 (whether or not such day
is a Business Day), respectively. Additional Interest will be payable as set forth in Section
4.06(d), Section 4.06(e) and Section 6.03 of the within-mentioned Indenture, and any reference to
interest on, or in respect of, any Note therein shall be deemed to include Additional Interest if,
in such context, Additional Interest is, was or would be payable pursuant to any of such Section
4.06(d), Section 4.06(e) or Section 6.03 and any express mention of the payment of Additional
Interest in any provision therein shall not be construed as excluding Additional Interest in those
provisions thereof where such express mention is not made. Accrued interest on the Notes shall be
computed on the basis of a 360-day year composed of twelve 30-day months.

     Any Defaulted Amounts shall accrue interest per annum at the rate borne by the Notes plus one
percent, subject to the enforceability thereof under applicable law, from, and including, the
relevant payment date to, but excluding, the date on which such Defaulted Amounts shall have been
paid by the Company, at its election, in accordance with Section 2.03(c) of the Indenture.

     The Company shall pay the principal of and interest on this Note, so long as such Note is a
Global Note, in immediately available funds to the Depositary or its nominee, as the case may

 

			
	*	 	At such time as (1) the Company has delivered
the Free Transferability Certificate to the Trustee pursuant to Section 2.11 of
the Indenture and (2) the Resale Restriction Termination Date has occurred, the
CUSIP number for this Note shall be deemed to be CUSIP No. 891777 AC8 and the
ISIN number for this Note shall be deemed to be ISIN No. US891777AC82.

A-3

 

be, as the registered Holder of such Note. As provided in and subject to the provisions of
the Indenture, the Company shall pay the principal of any Notes (other than Notes that are Global
Notes) at the office or agency designated by the Company for that purpose in the Borough of
Manhattan, The City of New York. The Company has initially designated the Trustee as its Paying
Agent and Note Registrar in respect of the Notes and its agency in the Borough of Manhattan, The
City of New York as a place where Notes may be presented for payment or for registration of
transfer.

     Reference is made to the further provisions of this Note set forth on the reverse hereof,
including, without limitation, provisions giving the Holder of this Note the right to convert this
Note into cash, shares of Common Stock or a combination of cash and shares of Common Stock, as
applicable, on the terms and subject to the limitations set forth in the Indenture. Such further
provisions shall for all purposes have the same effect as though fully set forth at this place.

     This Note shall be construed in accordance with and governed by the laws of the State of New
York.

     In the case of any conflict between this Note and the Indenture, the provisions of the
Indenture shall control.

     This Note 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.

[Remainder of page intentionally left blank]

A-4

 

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

	 	 	 	 	 
	 	TOWER GROUP, INC.

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

	 				
	 	

Dated:

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

U.S. BANK NATIONAL ASSOCIATION,

as Trustee, certifies that this is one of the Notes described

in the within-named Indenture.

 	 
	 	By:  	 	 
	 	 	Authorized Signatory 	 
	 	 	 	 

A-5

 

	 	 	 	 	 

FORM OF REVERSE OF NOTE

TOWER GROUP, INC.

5.00% Convertible Senior Note due 2014

     This Note is one of a duly authorized issue of Notes of the Company, designated as its 5.00%
Convertible Senior Notes due 2014 (the “Notes”), limited to the aggregate principal amount of
$150,000,000 all issued or to be issued under and pursuant to an Indenture dated as of September
20, 2010 (the “Indenture”), between the Company and U.S. Bank National Association (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 Notes. Additional Notes may be issued in an
unlimited aggregate principal amount, subject to certain conditions specified in the Indenture.

     In case an Event of Default, as defined in the Indenture, shall have occurred and be
continuing, the principal of, and interest on, all Notes may be declared, by either the Trustee or
Holders of at least 25% of the aggregate principal amount of Notes then outstanding, and upon said
declaration shall become, due and payable, in the manner, with the effect and subject to the
conditions and certain exceptions set forth in the Indenture.

     Subject to the terms and conditions of the Indenture, the Company will make all payments and
deliveries in respect of the Fundamental Change Purchase Price on the Fundamental Change Purchase
Date and in respect of the principal amount on the Maturity Date, as the case may be, to the Holder
who surrenders a Note to a Paying Agent to collect such payments in respect of the Note. The
Company will pay cash amounts in money of the United States that at the time of payment is legal
tender for payment of public and private debts.

     The Indenture contains provisions permitting the Company and the Trustee in certain
circumstances, without the consent of the Holders of the Notes, and in certain other circumstances,
with the consent of the Holders of not less than a majority of the aggregate principal amount of
the Notes at the time outstanding, evidenced as in the Indenture provided, to execute supplemental
indentures modifying the terms of the Indenture and the Notes as described therein. It is also
provided in the Indenture that, subject to certain exceptions, the Holders of a majority of the
aggregate principal amount of the Notes at the time outstanding may on behalf of the Holders of all
of the Notes waive any past Default or Event of Default under the Indenture and its consequences.

     No reference herein to the Indenture and no provision of this Note or of the Indenture shall
alter or impair the obligation of the Company, which is absolute and unconditional, to pay the
principal (including the Fundamental Change Purchase Price, if applicable) of and accrued and
unpaid interest on this Note at the place, at the respective times, at the rate and in the lawful
money herein prescribed.

     The Notes are issuable in registered form without coupons in denominations of $1,000 principal
amount and integral multiples thereof. 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,

A-6

 

Notes may be exchanged for a like aggregate principal amount of Notes of other authorized
denominations, without payment of any service charge but, if required by the Company or Trustee,
with payment of a sum sufficient to cover any transfer or similar tax that may be imposed in
connection therewith as a result of the name of the Holder of the new Notes issued upon such
exchange of Notes being different from the name of the Holder of the old Notes surrendered for such
exchange.

     The Notes are not subject to redemption through the operation of any sinking fund or
otherwise.

     Upon the occurrence of a Fundamental Change, the Holder has the right, at such Holder’s
option, to require the Company to purchase for cash all of such Holder’s Notes or any portion
thereof (in principal amounts of $1,000 or integral multiples thereof) on the Fundamental Change
Purchase Date at a price equal to the Fundamental Change Purchase Price.

     Subject to the provisions of the Indenture, the Holder hereof has the right, at its option,
during certain periods and upon the occurrence of certain conditions specified in the Indenture,
prior to the close of business on the second Scheduled Trading Day immediately preceding the
Maturity Date, to convert any Notes or portion thereof that is $1,000 or an integral multiple
thereof, into cash, shares of Common Stock or a combination of cash and shares of Common Stock, as
applicable, at the Conversion Rate specified in the Indenture, as adjusted from time to time as
provided in the Indenture.

     Terms used in this Note and defined in the Indenture are used herein as therein defined.

A-7

 

ABBREVIATIONS

     The following abbreviations, when used in the inscription of the face of this Note, 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 = Uniform Gifts to Minors Act

CUST = Custodian

TEN ENT = as tenants by the entireties

JT TEN = joint tenants with right of survivorship and not as tenants in common

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

A-8

 

SCHEDULE A

SCHEDULE OF EXCHANGES OF NOTES

TOWER GROUP, INC.

5.00% Convertible Senior Notes due 2014

     The initial principal amount of this Global Note is [           ] ($[           ]). The following increases or decreases in this Global Note have been made:

	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	Principal Amount of	 	Signature of
	 	 	 	 	 	 	this Global Note	 	authorized
	 	 	Amount of decrease	 	Amount of increase	 	following such	 	signatory of
	 	 	in Principal Amount	 	in Principal Amount	 	decrease or	 	Trustee or
	Date of Exchange	 	of this Global Note	 	of this Global Note	 	increase	 	Custodian
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 
	 	 
	 	 
	 	 

A-9

 

ATTACHMENT 1

FORM OF NOTICE OF CONVERSION

To: Tower Group, Inc.

     The undersigned registered owner of this Note hereby exercises the option to convert this
Note, or the portion hereof (that is $1,000 principal amount or an integral multiple thereof) below
designated, into cash, shares of Common Stock or a combination of cash and shares of Common Stock,
as applicable, in accordance with the terms of the Indenture referred to in this Note, and directs
that any cash payable and any shares of Common Stock issuable and deliverable upon such conversion,
together with any cash for any fractional share, and any Notes representing any unconverted
principal amount hereof, be issued and delivered to the registered Holder hereof unless a different
name has been indicated below. If any shares of Common Stock or any portion of this Note not
converted are to be issued in the name of a Person other than the undersigned, the undersigned will
pay all documentary, stamp or similar issue or transfer taxes, if any, in accordance with Section
14.02(d) and Section 14.02(e) of the Indenture. Any amount required to be paid to the undersigned
on account of interest accompanies this Note.

	 	 	 	 	 	 	 	 	 

	Dated:

	 	 	 	 	 	 	 	 
	 

	 	 
	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 
	 

	 	 	 	 	 	 	 	 
	 

	 	 	 	 	 	 	 	 
	 

	 	 	 	 	 	Signature(s)	 	 

Signature Guarantee

Signature(s) must be guaranteed

by an eligible Guarantor Institution

(banks, stock brokers, savings and

loan associations and credit unions)

with membership in an approved

signature guarantee medallion program

pursuant to Securities and Exchange

Commission Rule 17Ad-15 if shares

of Common Stock are to be issued, or

Notes are to be delivered, other than

to and in the name of the registered holder.

Fill in for registration of shares if

to be issued, and Notes if to

1

 

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): $                    ,000
	 
	 	 
	 

	 	NOTICE: The above signature(s) of the Holder(s) hereof must
correspond with the name as written upon the face of the Note
in every particular without alteration or enlargement or any
change whatever.
	 
	 	 
	 

	 	                                                            

	 

	 	
Social Security or Other Taxpayer
	 

	 	Identification Number

2

 

ATTACHMENT 2

FORM OF FUNDAMENTAL CHANGE PURCHASE NOTICE

To: Tower Group, Inc.

     The undersigned registered owner of this Note hereby acknowledges receipt of a notice from
Tower Group, Inc. (the “Company”) as to the occurrence of a Fundamental Change with respect to the
Company and specifying the Fundamental Change Purchase Date and requests and instructs the Company
to pay to the registered holder hereof in accordance with Section 15.02 of the Indenture referred
to in this Note (1) the entire principal amount of this Note, or the portion thereof (that is
$1,000 principal amount or an integral multiple thereof) below designated, and (2) if such
Fundamental Change Purchase Date does not fall during the period after a Regular Record Date and on
or prior to the corresponding Interest Payment Date, accrued and unpaid interest, if any, thereon
to, but excluding, such Fundamental Change Purchase Date.

     In the case of Physical Notes, the certificate numbers of the Notes to be purchased are as set
forth below:

Dated:                                                             

	 	 	 

	 

	 	 
 
	 

	 	Signature(s)
	 
	 	 
	 

	 	 
 
	 

	 	Social Security or Other Taxpayer

Identification Number
	 
	 	 
	 

	 	Principal amount to be repaid (if less than all): $                    ,000
	 
	 	 
	 

	 	NOTICE: The above signature(s) of the Holder(s) hereof must
correspond with the name as written upon the face of the Note
in every particular without alteration or enlargement or any
change whatever.

1

 

ATTACHMENT 3

FORM OF ASSIGNMENT AND TRANSFER

For value received ____________________________ hereby sell(s), assign(s) and transfer(s) unto
_________________ (Please insert social security or Taxpayer Identification Number of assignee) the
within Note, and hereby irrevocably constitutes and appoints _________________ attorney to transfer
the said Note on the books of the Company, with full power of substitution in the premises.

In connection with any transfer of the within Note occurring prior to the Resale Restriction
Termination Date, as defined in the Indenture governing such Note, the undersigned confirms that
such Note is being transferred:

o To Tower Group, Inc. or a subsidiary thereof; or

o Pursuant to a registration statement that has become or been declared effective under the
Securities Act of 1933, as amended; or

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

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

o Pursuant to another available exemption from registration under the Securities Act of 1933, as
amended.

1

 

Dated: ________________________

 

 

Signature(s)

 

Signature Guarantee

Signature(s) must be guaranteed by an

eligible Guarantor Institution (banks, stock

brokers, savings and loan associations and

credit unions) with membership in an approved

signature guarantee medallion program pursuant

to Securities and Exchange Commission

Rule 17Ad-15 if Notes are to be delivered, other

than to and in the name of the registered holder.

NOTICE: The signature on the assignment must correspond with the name as written upon the face of
the Note in every particular without alteration or enlargement or any change whatever.

2

 

EXHIBIT B

FORM OF FREE TRANSFERABILITY CERTIFICATE

U.S. Bank National Association

100 Wall Street

Suite 1600

New York, NY 10005

Attention: Corporate Trust Services

	 	 	 	 	 

	Reference:

	 	Tower Group, Inc.	 	 
	 	 	5.00% Convertible Senior Notes due 2014
	 

	 	Restricted CUSIP:
	 	891777 AB0
	 

	 	Unrestricted CUSIP:
	 	891777 AC8
	 

	 	Restricted ISIN:
	 	US891777AB00
	 

	 	Unrestricted ISIN:
	 	US891777AC82

Dear Sir/Madam:

Whereas the 5.00% Convertible Notes due 2014 (the “Notes”) of Tower Group, Inc. (the “Company”)
[will be][have become] freely tradable without restrictions by non-affiliates of the Company on
___________ pursuant to Rule 144 under the Securities Act of 1933, as amended, in accordance with
Section 2.11 of the Indenture, dated as of September 20, 2010 (the “Indenture”), between the
Company and U.S. Bank National Association, as Trustee (the “Trustee”), pursuant to which the Notes
were issued, the Company hereby instructs you that:

(i) the restrictive legend on the Notes specified in Section 2.05(c) of the Indenture and
set forth on the Notes shall be deemed removed from the Global Notes on _____________, as
provided in the Indenture, without further action on the part of Holders; and

(ii) the restricted CUSIP number and the restricted ISIN number for the Notes shall be
deemed removed from the Global Notes and replaced with the unrestricted CUSIP number and the
unrestricted ISIN number set forth therein on ___________, as provided in the Indenture,
without further action on the part of Holders.

Capitalized terms used but not defined herein shall have the meanings set forth in the Indenture.

1

 

	 	 	 	 	 
	 	Very truly yours,

Tower Group, Inc.

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 

2exv4w2

Exhibit
4.2

			
	 
	 	

Bank of America, N.A.

c/o Merrill Lynch, Pierce, Fenner & Smith Incorporated

One Bryant Park

New York, NY 10036

Attn: John Servidio

Telephone: 646-855-8900

Facsimile: 704-208-2869

	 	 	 

	 

	 	September 14, 2010

			
	To:	 	Tower Group, Inc.

120 Broadway, 31st Floor

New York, NY 10271

Attention: Treasurer

Telephone No.: (212) 655-2000

Facsimile No.: (212) 655-2199

			
	Re:	 	Base Call Option Transaction

(Transaction Reference Number: NY-108281860)

     The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and
conditions of the call option transaction entered into between Bank of America, N.A. (“Dealer”) and
Tower Group, Inc. (“Counterparty”) as of the Trade Date specified below (the “Transaction”). This
letter agreement constitutes a “Confirmation” as referred to in the ISDA Master Agreement specified
below. This Confirmation shall replace any previous agreements and serve as the final
documentation for the Transaction.

     The definitions and provisions contained in the 2002 ISDA Equity Derivatives Definitions (the
“Equity Definitions”), as published by the International Swaps and Derivatives Association, Inc.
(“ISDA”) are incorporated into this Confirmation. In the event of any inconsistency between the
Equity Definitions and this Confirmation, this Confirmation shall govern. Certain defined terms
used herein are based on terms that are defined in the Offering Memorandum dated September 14, 2010
(the “Offering Memorandum”) relating to the 5.00% Convertible Senior Notes due September 15, 2014
(as originally issued by Counterparty, the “Convertible Notes” and each USD 1,000 principal amount
of Convertible Notes, a “Convertible Note”) issued by Counterparty in an aggregate initial
principal amount of USD 135,000,000 (as increased by up to an aggregate principal amount of USD
15,000,000 if and to the extent that the Initial Purchasers (as defined herein) exercise their
option to purchase additional Convertible Notes pursuant to the Purchase Agreement (as defined
herein)) pursuant to an Indenture to be dated September 20, 2010 between Counterparty and U.S. Bank
National Association, as trustee (the “Indenture”). In the event of any inconsistency between the
terms defined in the Offering Memorandum, the Indenture and this Confirmation, this Confirmation
shall govern. The parties acknowledge that this Confirmation is entered into on the date hereof
with the understanding that (i) definitions set forth in the Indenture which are also defined
herein by reference to the Indenture and (ii) sections of the Indenture that are referred to herein
will conform to the descriptions thereof in the Offering Memorandum. If any such definitions in
the Indenture or any such sections of the Indenture differ from the descriptions thereof in the
Offering Memorandum, the descriptions thereof in the Offering Memorandum will govern for purposes
of this Confirmation. The parties further acknowledge that the Indenture section numbers used
herein are based on the draft of the Indenture last reviewed by Dealer as of the date of this
Confirmation, and if any such section numbers are changed in the Indenture as executed, the parties
will amend this Confirmation in good faith to preserve the intent of the parties. Subject to the
foregoing, references to the Indenture herein are references to the Indenture as in effect on the
date of its execution, and if the Indenture is amended following such date, any such amendment will
be disregarded for purposes of this Confirmation unless the parties agree otherwise in writing.

 

 

			
	 
	 	

     Each party is hereby advised, and each such party acknowledges, that the other party has
engaged in, or refrained from engaging in, substantial financial transactions and has taken other
material actions in reliance upon the parties’ entry into the Transaction to which this
Confirmation relates on the terms and conditions set forth below.

1. This Confirmation evidences a complete and binding agreement between Dealer and Counterparty as
to the terms of the Transaction to which this Confirmation relates. This Confirmation shall
supplement, form a part of, and be subject to an agreement in the form of the 2002 ISDA Master
Agreement (the “Agreement”) as if Dealer and Counterparty had executed an agreement in such form
(but without any Schedule except for the election of the laws of the State of New York as the
governing law (without reference to choice of law doctrine)) on the Trade Date. In the event of
any inconsistency between provisions of the Agreement and this Confirmation, this Confirmation will
prevail for the purpose of the Transaction to which this Confirmation relates. The parties hereby
agree that no transaction other than the Transaction to which this Confirmation relates shall be
governed by the Agreement.

2. The terms of the particular Transaction to which this Confirmation relates are as follows:

          General Terms.

	 	 	 

	Trade Date:
	 	September 14, 2010
	 	 	 
	Effective Date:
	 	The third Exchange Business Day immediately prior to the
	 	 	Premium Payment Date
	 	 	 
	Option Style:
	 	“Modified American”, as
described under “Procedures for Exercise” below
	 	 	 
	Option Type:
	 	Call
	 	 	 
	Buyer:
	 	Counterparty
	 	 	 
	Seller:
	 	Dealer
	 
	 	 
	Shares:
	 	The common stock of Counterparty,
par value USD 0.01 per share (Exchange symbol “TWGP”).
	 	 	 
	Number of Options:
	 	135,000.  For the avoidance of doubt, the Number of Options
	 	 	shall be reduced by any Options exercised by Counterparty.  In
	 	 	no event will the Number of Options be less than zero.
	 	 	 
	Applicable Percentage:
	 	50%
	 	 	 
	Option Entitlement:
	 	A number equal to the product of the Applicable Percentage and
	 
	 	36.3782.
	 
	 	 
	Strike Price:
	 	USD 27.4890
	 
	 	 
	Premium:
	 	USD 6,885,000.00
	 
	 	 
	Premium Payment Date:
	 	September 20, 2010
	 
	 	 
	Exchange:
	 	The NASDAQ Global Select Market
	 
	 	 
	Related Exchange(s):
	 	All Exchanges
	 
	 	 
	Excluded Provisions:
	 	Section 14.03 and Section 14.04(h) of the Indenture.

2

 

			
	 
	 	

          Procedures
for Exercise.

	 	 	 	 

	 

	Conversion Date:
	 	With respect to any conversion of a Convertible Note, the date
on which the Holder (as such term is defined in the Indenture)
of such Convertible Note satisfies all of the requirements for
conversion thereof as set forth in Section 14.02(b) of the
Indenture.
	 
	 	 	 
	 

	Free Convertibility Date:
	 	March 15, 2014
	 
	 	 	 
	 

	Expiration Time:
	 	The Valuation Time
	 
	 	 	 
	 

	Expiration Date:
	 	September 15, 2014, subject to earlier exercise.
	 
	 	 	 
	 

	Multiple Exercise:
	 	Applicable, as described under “Automatic Exercise” below.
	 
	 	 	 
	 

	Automatic Exercise:
	 	Notwithstanding Section 3.4 of the Equity Definitions, on each
Conversion Date, a number of Options equal to the number of
Convertible Notes in denominations of USD 1,000 as to which
such Conversion Date has occurred shall be deemed to be
automatically exercised; provided that such Options shall be
exercised or deemed exercised only if Counterparty has provided
a Notice of Exercise to Dealer in accordance with “Notice of
Exercise” below.
	 
	 	 	 
	 

	 	 	Notwithstanding the foregoing, in no event shall the number of
Options that are exercised or deemed exercised hereunder exceed
the Number of Options.
	 
	 	 	 
	 

	Notice of Exercise:
	 	Notwithstanding anything to the contrary in the Equity
Definitions or under “Automatic Exercise” above, in order to
exercise any Options, Counterparty must notify Dealer in
writing before 5:00 p.m. (New York City time) on the Scheduled
Valid Day immediately preceding the scheduled first day of the
Settlement Averaging Period for the Options being exercised of
(i) the number of such Options, (ii) the scheduled first day of
the Settlement Averaging Period and the scheduled Settlement
Date, (iii) the Relevant Settlement Method for such Options,
and (iv) if the Relevant Settlement Method for such Options is
not Net Share Settlement, Settlement in Shares or Settlement in
Cash (each as defined below), the fixed amount of cash per
Convertible Note that Counterparty has elected to deliver to
Holders (as such term is defined in the Indenture) of the
related Convertible Notes (the “Specified Cash Amount”), and
such notice shall also include the information,
representations, acknowledgements and agreements required
pursuant to “Settlement Method Election Conditions” below;
provided that in respect of any Options relating to Convertible
Notes with a Conversion Date occurring on or after the Free
Convertibility Date, (A) such notice may be given on or prior
to the second Scheduled Valid Day immediately preceding the
Expiration Date and need only specify the information required
in clause (i) above, and (B) if the Relevant Settlement Method
for such Options is

3

 

			
	 
	 	

	 	 	 

	 	 	not Net Share Settlement, Dealer shall have
received a separate notice (the “Notice of Final Settlement
Method”) in respect of all such Convertible Notes before 5:00
p.m. (New York City time) on or prior to the Free
Convertibility Date specifying the information required in
clauses (iii) and (iv) above, as well as the information,
representations, acknowledgements and agreements required
pursuant to “Settlement Method Election Conditions” below.
	 	 	 
	Valuation Time: 

	 	At the close of trading of the regular trading session on the
Exchange; provided that if the principal trading session is
extended, the Calculation Agent shall determine the Valuation
Time in its reasonable discretion.
	 	 	 
	Market
Disruption Event:

	 	Section 6.3(a) of the Equity Definitions is hereby replaced in
its entirety by the following:
	 	 	 
	 	 	“‘Market Disruption Event’ means, in respect of a Share, (i) a
failure by the primary United States national or regional
securities exchange or market on which the Shares are listed or
admitted for trading to open for trading during its regular
trading session or (ii) the occurrence or existence prior to
1:00 p.m. (New York City time) on any Scheduled Valid Day for
the Shares for more than one half-hour period in the aggregate
during regular trading hours of any suspension or limitation
imposed on trading (by reason of movements in price exceeding
limits permitted by the relevant stock exchange or otherwise)
in the Shares or in any options or futures contracts relating
to the Shares.”

     Settlement Terms.

	 	 	 	 

	 	Settlement Method:
	 	For any Option, Net Share Settlement; provided that if the
Relevant Settlement Method set forth below for such Option is
not Net Share Settlement, then the Settlement Method for such
Option shall be such Relevant Settlement Method, but only if
the Settlement Method Election Conditions have been satisfied
and Counterparty shall have notified Dealer of the Relevant
Settlement Method in the Notice of Exercise or Notice of Final
Settlement Method, as applicable, for such Option.
	 	 	 	 
	 	Relevant Settlement Method:
	 	In respect of any Option, subject to the Settlement Method
Election Conditions:
	 	 	 	 
	 	 	 	(i) if Counterparty has elected to settle its conversion
obligations in respect of the related Convertible Note (A)
entirely in Shares pursuant to Section 14.02(v) of the
Indenture (together with cash in lieu of fractional Shares)
(such settlement method,
“Settlement in Shares”), (B) in a
combination of cash and Shares pursuant to Section
14.02(a)(vii) of the Indenture with a Specified Cash Amount
less than USD 1,000 (such settlement method,

4

 

			
	 
	 	

	 	 	 	 

	 	 	 	“Low Cash Combination Settlement”), or (C) in a combination of cash and
Shares pursuant to Section 14.02(a)(vii) of the Indenture with
a Specified Cash Amount equal to USD 1,000 (such settlement
method, “Par Cash Combination Settlement”), then, in each case,
the Relevant Settlement Method for such Option shall be Net
Share Settlement;
	 	 	 	 
	 	 	 	(ii) if Counterparty has elected to settle its conversion
obligations in respect of the related Convertible Note in a
combination of cash and Shares pursuant to Section
14.02(a)(vii) of the Indenture with a Specified Cash Amount
greater than USD 1,000, then the Relevant Settlement Method for
such Option shall be Combination Settlement; and
	 	 	 	 
	 	 	 	(iii) if Counterparty has elected to settle its conversion
obligations in respect of the related Convertible Note entirely
in cash pursuant to Section 14.02(a)(vi) of the Indenture (such
settlement method, “Settlement in Cash”), then the Relevant
Settlement Method for such Option shall be Cash Settlement.
	 	 	 	 
	 	Settlement Method Election Conditions:
	 	For any Relevant Settlement Method other than Net Share
Settlement, such Relevant Settlement Method shall apply to an
Option only if the Notice of Exercise or Notice of Final
Settlement Method, as applicable, contains:
	 	 	 	 
	 	 	 	(i) a representation that, on the date of such Notice of
Exercise or Notice of Final Settlement Method, as applicable,
Counterparty is not in possession of any material non-public
information with respect to Counterparty or the Shares;
	 	 	 	 
	 	 	 	(ii) a representation that Counterparty is electing the
settlement method for the related Convertible Note and such
Relevant Settlement Method in good faith and not as part of a
plan or scheme to evade the prohibitions of Rule 10b-5 under
the Securities Exchange Act of 1934, as amended (the “Exchange
Act”);
	 	 	 	 
	 	 	 	(iii) a representation that Counterparty has not entered into
or altered any hedging transaction relating to the Shares
corresponding to or offsetting the Transaction;
	 	 	 	 
	 	 	 	(iv) a representation that Counterparty is not electing the
settlement method for the related Convertible Note and such
Relevant Settlement Method to create actual or apparent trading
activity in the Shares (or any security convertible into or
exchangeable for the Shares) or to raise or depress or
otherwise manipulate the price of the Shares (or any security
convertible into or exchangeable for the Shares); and

5

 

			
	 
	 	

	 	 	 	 

	 	 	 	(v) an acknowledgment by Counterparty that (A) any transaction
by Dealer following Counterparty’s election of the settlement
method for the related Convertible Note and such Relevant
Settlement Method shall be made at Dealer’s sole discretion and
for Dealer’s own account and (B) Counterparty does not have,
and shall not attempt to exercise, any influence over how,
when, whether or at what price to effect such transactions,
including, without limitation, the price paid or received per
Share pursuant to such transactions, or whether such
transactions are made on any securities exchange or privately.
	 	 	 	 
	 	Net Share Settlement:

	 	If Net Share Settlement is applicable to any Option exercised
or deemed exercised hereunder, Dealer will deliver to
Counterparty, on the relevant Settlement Date for each such
Option, a number of Shares (the “Net Share Settlement Amount”)
equal to the sum, for each Valid Day during the Settlement
Averaging Period for each such Option, of (i) the Daily Option
Value for such Valid Day, divided by (ii) the Relevant Price on
such Valid Day, divided by (iii) the number of Valid Days in
the Settlement Averaging Period; provided that, except in the
case of Par Cash Combination Settlement, in no event shall the
Net Share Settlement Amount for any Option exceed a number of
Shares equal to the Applicable Limit for such Option divided by
the Applicable Limit Price on the Settlement Date for such
Option.
	 	 	 	 
	 	 	 	Dealer will deliver cash in lieu of any fractional Shares to be
delivered with respect to any Net Share Settlement Share Amount
valued at the Relevant Price for the last Valid Day of the
Settlement Averaging Period.
	 	 	 	 
	 	Combination Settlement: 

	 	If Combination Settlement is applicable to any Option exercised
or deemed exercised hereunder, Dealer will deliver to
Counterparty, on the relevant Settlement Date for each such
Option:
	 	 	 	 
	 	 	 	(i) an amount of cash (the “Combination Settlement Cash
Amount”) equal to the sum, for each Valid Day during the
Settlement Averaging Period for such Option, of (A) an amount
(the “Daily Combination Settlement Cash Amount”) equal to the
lesser of (1) the product of (x) the Applicable Percentage and
(y) the Specified Cash Amount minus USD 1,000 and (2) the Daily
Option Value, divided by (B) the number of Valid Days in the
Settlement Averaging Period; provided that if the calculation
in clause (A) above results in zero or a negative number for
any Valid Day, the Daily Combination Settlement Cash Amount for
such Valid Day shall be deemed to be zero; and
	 	 	 	 
	 	 	 	(ii) a number of Shares (the “Combination Settlement Share
Amount”) equal to the sum, for each Valid Day during the
Settlement Averaging Period for such Option,

6

 

			
	 
	 	

	 	 	 	 

	 	 	 	of a number of Shares for such Valid Day (the “Daily Combination Settlement
Share Amount”) equal to (A) the Daily Option Value on such
Valid Day minus the Daily Combination Settlement Cash Amount
for such Valid Day, divided by (B) the Relevant Price on such
Valid Day, divided by (C) the number of Valid Days in the
Settlement Averaging Period; provided that if the calculation
in clause (A) above results in zero or a negative number for
any Valid Day, the Daily Combination Settlement Share Amount
for such Valid Day shall be deemed to be zero.
	 	 	 	 
	 	 	 	Dealer will deliver cash in lieu of any fractional Shares to be
delivered with respect to any Combination Settlement Share
Amount valued at the Relevant Price for the last Valid Day of
the Settlement Averaging Period.
	 	 	 	 
	 	Cash Settlement:

	 	If Cash Settlement is applicable to any Option exercised or
deemed exercised hereunder, in lieu of Section 8.1 of the
Equity Definitions, Dealer will pay to Counterparty, on the
relevant Settlement Date for each such Option, an amount of
cash (the “Cash Settlement Amount”) equal to the sum, for each
Valid Day during the Settlement Averaging Period for such
Option, of (i) the Daily Option Value for such Valid Day,
divided by (ii) the number of Valid Days in the Settlement
Averaging Period.
	 	 	 	 
	 	Daily Option Value:

	 	For any Valid Day, an amount equal to (i) the Option
Entitlement on such Valid Day, multiplied by (ii) the Relevant
Price on such Valid Day less the Strike Price on such Valid
Day; provided that if the calculation contained in clause (ii)
above results in a negative number, the Daily Option Value for
such Valid Day shall be deemed to be zero. In no event will
the Daily Option Value be less than zero.
	 	 	 	 
	 	Applicable Limit:

	 	For any Option, an amount of cash equal to the Applicable
Percentage multiplied by the excess of (i) the aggregate of (A)
the amount of cash, if any, delivered to the Holder of the
related Convertible Note upon conversion of such Convertible
Note and (B) the number of Shares, if any, delivered to the
Holder of the related Convertible Note upon conversion of such
Convertible Note multiplied by the Applicable Limit Price on
the Settlement Date for such Option, over (ii) USD 1,000.
	 	 	 	 
	 	Applicable Limit Price:

	 	On any day, the opening price as displayed under the heading
“Op” on Bloomberg page TWGP.UQ <equity> (or its
equivalent successor if such page is not available).
	 	 	 	 
	 	Valid Day:

	 	A day on which (i) there is no Market Disruption Event and (ii)
trading in the Shares generally occurs on the Exchange or, if
the Shares are not then listed on the Exchange, on the
principal other United States national or regional securities
exchange on which the Shares are then

7

 

			
	 
	 	

	 	 	 	 	 
	 	 	 	 	 
	 	 	 	listed or, if the Shares
are not then listed on a United States national or regional
securities exchange, on the principal other market on which the
Shares are then listed or admitted for trading. If the Shares
are not so listed or admitted for trading, “Valid Day” means a
Business Day.	 
	 	 	 	 	 	 	 
	 	Scheduled Valid Day:
	 	A day that is scheduled to be a Valid Day on the principal
United States national or regional securities exchange or
market on which the Shares are listed or admitted for trading.
If the Shares are not so listed or admitted for trading,
“Scheduled Valid Day” means a Business Day.	 
	 	 	 	 	 	 	 
	 	Business Day:
	 	Any day other than a Saturday, a Sunday or a day on which the
Federal Reserve Bank of New York is authorized or required by
law or executive order to close or be closed.	 
	 	 	 	 	 	 	 
	 	Relevant Price:
	 	On any Valid Day, the per Share volume-weighted average price
as displayed under the heading “Bloomberg VWAP” on Bloomberg
page TWGP.UQ <equity> AQR (or its equivalent successor if
such page is not available) in respect of the period from the
scheduled open of trading until the scheduled close of trading
of the primary trading session on such Valid Day (or if such
volume-weighted average price is unavailable, the market value
of one Share on such Valid Day, as determined by the
Calculation Agent using a volume-weighted average method). The
Relevant Price will be determined without regard to after hours
trading or any other trading outside of the regular trading
session trading hours.	 
	 	 	 	 	 	 	 
	 	Settlement Averaging Period:
	 	For any Option and regardless of the Settlement Method
applicable to such Option:	 
	 	 	 	 	 	 	 
	 	 
	 	(i)
	 	if the related Conversion Date occurs prior to the
Free Convertibility Date, the 40 consecutive Valid
Days commencing on, and including, the third Valid
Day following such Conversion Date; provided
that if the Notice of Exercise for such Option
specifies that Settlement in Shares or Low Cash
Combination Settlement applies to the related
Convertible Note, the Settlement Averaging Period
shall be the 80 consecutive Valid Day period commencing
on, and including, the second Valid Day immediately
following such Conversion Date; or	 
	 	 	 	 	 	 	 
	 	 
	 	(ii)
	 	if the related Conversion Date occurs on or following
the Free Convertibility Date, the 40 consecutive
Valid Days commencing on, and including, the
42nd Scheduled Valid Day immediately prior
to the Expiration Date; provided that if the Notice
of Exercise or Notice of Final Settlement Method, as
applicable, for such Option specifies that Settlement in
Shares or Low Cash	 

8

 

			
	 
	 	

	 	 	 	 	 	 	 

	 

	 	 
	 	 
	 	Combination Settlement
applies to the related Convertible Note, the
Settlement Averaging Period shall be the 80 consecutive
Valid Days commencing on, and including, the
82nd Scheduled Valid Day immediately prior
to the Expiration Date.

	 	 	 	 

	 	Settlement Date:

	 	For any Option, the third Business Day immediately following
the last Valid Day of the Settlement Averaging Period for such
Option.
	 	 	 	 
	 	Settlement Currency:

	 	USD
	 	 	 	 
	 	Other Applicable Provisions:

	 	The provisions of Sections 9.1(c), 9.8, 9.9, 9.11, 9.12 and
10.5 of the Equity Definitions will be applicable, except that
all references in such provisions to “Physically-settled” shall
be read as references to “Share Settled”. “Share Settled” in
relation to any Option means that Net Share Settlement or
Combination Settlement is applicable to that Option.
	 	 	 	 
	 	Representation and Agreement:

	 	Notwithstanding Section 9.11 of the Equity Definitions, the
parties acknowledge that any Shares delivered to Counterparty
shall be, upon delivery, subject to restrictions and
limitations arising from Counterparty’s status as issuer of the
Shares under applicable securities laws.

	3.
Additional Terms applicable to the Transaction.
	 
	Adjustments applicable to the Transaction: 

	 	 	 	 

	 	Potential Adjustment Events:

	 	Notwithstanding Section 11.2(e) of the Equity Definitions, a
“Potential Adjustment Event” means an occurrence of any event
or condition, as set forth in any Dilution Adjustment
Provision, that would result in an adjustment to the Conversion
Rate (as defined in the Indenture) of the Convertible Notes.
	 	 	 	 
	 	Method of Adjustment:

	 	Calculation Agent Adjustment, which means that, notwithstanding
Section 11.2(c) of the Equity Definitions, upon any Potential
Adjustment Event that results in an adjustment to the
Conversion Rate (as defined in the Indenture) of the
Convertible Notes, the Calculation Agent shall make a
corresponding adjustment to any one or more of the Strike
Price, Number of Options, Option Entitlement and any other
variable relevant to the exercise, settlement or payment for
the Transaction; provided that, notwithstanding the foregoing,
if the Calculation Agent in good faith disagrees with any
adjustment to the Convertible Notes that involves an exercise
of discretion by Counterparty or its board of directors
(including, without limitation, pursuant to Section 14.05 of
the Indenture or in connection with any proportional adjustment
or the determination of the fair

9

 

			
	 
	 	

	 	 	 	 

	 	 	 	value of any securities,
property, rights or other assets), then in each such case, the
Calculation Agent will determine the adjustment to be made to
any one or more of the Strike Price, Number of Options, Option
Entitlement and any other variable relevant to the exercise,
settlement or payment for the Transaction in a commercially
reasonable manner; provided, further, that, notwithstanding the
foregoing, if any Potential Adjustment Event occurs during the
Settlement Averaging Period but no adjustment was made to any
Convertible Note under the Indenture because the relevant
Holder (as such term is defined in the Indenture) was deemed to
be a record owner of the underlying Shares on the related
Conversion Date, then the Calculation Agent shall make an
adjustment, as determined by it, to the terms hereof in order
to account for such Potential Adjustment Event.
	 	 	 	 
	 	Dilution Adjustment Provisions:
	 	Section 14.04(a), (b), (c), (d) and (e) and Section 14.05 of
the Indenture.

	Extraordinary Events applicable to the Transaction:

	 	 	 	 

	 	Merger Events:
	 	Applicable; provided that notwithstanding Section 12.1(b) of
the Equity Definitions, a “Merger Event” means the occurrence
of any event or condition set forth in the definition of
“Merger Event” in Section 14.07(a) of the Indenture.
	 	 	 	 
	 	Tender Offers:
	 	Applicable; provided that notwithstanding Section 12.1(d) of
the Equity Definitions, a “Tender Offer” means the occurrence
of any event or condition set forth in Section 14.04(e) of the
Indenture.
	 	 	 	 
	 	Consequence of Merger Events /Tender
Offers:
	 	Notwithstanding Section 12.2 and Section 12.3 of the Equity
Definitions, upon the occurrence of a Merger Event or a Tender
Offer, the Calculation Agent shall make a corresponding
adjustment in respect of any adjustment under the Indenture to
any one or more of the nature of the Shares (in the case of a
Merger Event), Strike Price, Number of Options, Option
Entitlement and any other variable relevant to the exercise,
settlement or payment for the Transaction; provided, however,
that such adjustment shall be made without regard to any
adjustment to the Conversion Rate pursuant to any Excluded
Provision; provided further that if, with respect to a Merger
Event or a Tender Offer, (i) the consideration for the Shares
includes (or, at the option of a holder of Shares, may include)
shares of an entity or person not organized under the laws of
the United States, any State thereof or the District of
Columbia or (ii) the Counterparty to the Transaction following
such Merger Event or Tender Offer, will not be the Issuer
following such Merger Event or Tender Offer, then Cancellation

10

 

			
	 
	 	

	 	 	 	 	 

	 

	 	 	 	and Payment (Calculation Agent Determination) shall apply.
	 
	 	 	 	 
	 

	 	Nationalization, Insolvency or
Delisting:
	 	Cancellation and Payment (Calculation Agent Determination);
provided that, in addition to the provisions of Section
12.6(a)(iii) of the Equity Definitions, it will also constitute
a Delisting if the Exchange is located in the United States and
the Shares are not immediately re-listed, re-traded or
re-quoted on any of the New York Stock Exchange, The NASDAQ
Global Select Market or The NASDAQ Global Market (or their
respective successors); if the Shares are immediately
re-listed, re-traded or re-quoted on any of the New York Stock
Exchange, The NASDAQ Global Select Market or The NASDAQ Global
Market (or their respective successors), such exchange or
quotation system shall thereafter be deemed to be the Exchange.
	 
	 	 	 	 
	 

	 	Additional Disruption Events:	 	 
	 
	 	 	 	 
	 

	 	Change in Law:

	 	Applicable; provided that Section 12.9(a)(ii)(X) of the Equity
Definitions is hereby amended by replacing the word “Shares”
with the phrase “Hedge Positions.”
	 
	 	 	 	 
	 

	 	Failure to Deliver:

	 	Not Applicable
	 
	 	 	 	 
	 

	 	Hedging Disruption:

	 	Applicable; provided that Section 12.9(b)(iii) of the Equity
Definitions is hereby amended by inserting in the third line
thereof, after the words “to terminate the Transaction”, the
words “or a portion of the Transaction affected by such Hedging
Disruption”.

	 	 	 	 	 

	 

	 	Hedging Party:
	 	For all applicable Additional Disruption Events, Dealer.
	 
	 	 	 	 
	 

	 	Determining Party:
	 	For all applicable Extraordinary Events, Dealer.
	 
	 	 	 	 
	 

	 	Non-Reliance:
	 	Applicable
	 
	 	 	 	 
	 

	 	Agreements and Acknowledgements	 	 
	 
	 	 	 	 
	 

	 	Regarding Hedging Activities:
	 	Applicable
	 
	 	 	 	 
	 

	 	Additional Acknowledgments:
	 	Applicable
	 
	4.   Calculation Agent. 	 	Dealer

	 
	5.	 	Account Details.

	 	(a)	 	Account for payments to Counterparty:

Bank: State Street Trust Bank

ABA#: 011000028

Acct No.: 00153577

Beneficiary: Tower Group Inc./4RAX

Ref: Tower Group Inc./4RAX

11

 

			
	 
	 	

	 	 	 	Account for delivery of Shares to Counterparty:
	 
	 	 	 	To be provided by Counterparty.
	 
	 	(b)	 	Account for payments to Dealer:

Bank of America, N.A.

New York, NY

SWIFT: BOFAUS3N

Bank Routing: 026-009-593

Account Name: Bank of America

Account No. : 0012334-61892
	 
	 	 	 	Account for delivery of Shares from Dealer:
	 
	 	 	 	DTC 0773

Acct Name: Bank of America NA

Acct #: 116-00777

	6.	 	Offices.

	 	(a)	 	The Office of Counterparty for the Transaction is: Inapplicable, Counterparty
is not a Multibranch Party.
	 
	 	(b)	 	The Office of Dealer for the Transaction is: New York
	 
	 	 	 	Bank of America, N.A.

c/o Merrill Lynch, Pierce, Fenner & Smith Incorporated

Bank of America Tower at One Bryant Park

New York, NY 10036

	7.	 	Notices.

	 	(a)	 	Address for notices or communications to Counterparty:
	 
	 	 	 	Tower Group, Inc.

120 Broadway, 31st Floor

New York, NY 10271

Attention: Treasurer

Telephone No.: (212) 655-2000

Facsimile No.: (212) 655-2199
	 
	 	(b)	 	Address for notices or communications to Dealer:
	 
	 	 	 	Bank of America, N.A.

c/o Merrill Lynch, Pierce, Fenner & Smith Incorporated

Bank of America Tower at One Bryant Park

New York, NY 10036

Attn: John Servidio

Telephone: 646-855-7127

Facsimile: 704-208-2869

	8.	 	Representations and Warranties of Counterparty.
	 
	 	 	Each of the representations and warranties of Counterparty set forth in Section 3 of the
Purchase Agreement (the “Purchase Agreement”), dated as of September 14, 2010, between
Counterparty and J.P. Morgan Securities LLC and Merrill Lynch, Pierce, Fenner & Smith
Incorporated, as representatives of the Initial Purchasers party thereto (the “Initial
Purchasers”), are true and correct and are hereby deemed to be

12

 

			
	 
	 	

	 	 	repeated to Dealer as if set
forth herein. Counterparty hereby further represents and warrants to Dealer on the date
hereof and on and as of the Premium Payment Date that:

	 	(a)	 	Counterparty is duly organized and validly existing and in good standing under
the laws of its jurisdiction of incorporation.
	 
	 	(b)	 	Counterparty has the corporate power and authority to execute and deliver this
Confirmation and to perform its obligations hereunder; and all action required to be
taken for the due and proper authorization, execution and delivery by it of this
Confirmation and the consummation by it of the transactions contemplated hereby has
been duly and validly taken.
	 
	 	(c)	 	This Confirmation has been duly authorized by Counterparty and, when duly
executed and delivered in accordance with its terms by each of the parties hereto, will
constitute a valid and legally binding agreement of Counterparty enforceable against
Counterparty in accordance with its terms, except as enforceability may be limited by
applicable bankruptcy, insolvency or similar laws affecting creditors’ rights generally
or by equitable principles relating to enforceability.
	 
	 	(d)	 	The execution, delivery and performance by Counterparty of this Confirmation
and the consummation of the transactions contemplated hereby will not (i) conflict with
or result in a breach or violation of any of the terms or provisions of, or constitute
a default under, or result in the creation or imposition of any lien, charge or
encumbrance upon any property or assets of Counterparty or any of its subsidiaries
pursuant to, any indenture, mortgage, deed of trust, loan agreement or other agreement
or instrument to which Counterparty or any of its subsidiaries is a party or by which
Counterparty or any of its subsidiaries is bound or to which any of the property or
assets of Counterparty or any of its subsidiaries is subject, (ii) result in any
violation of the provisions of the charter or by-laws or similar organizational
documents of Counterparty or any of its subsidiaries
or (iii) result in the violation of any law or statute or any judgment, order, rule
or regulation of any court or arbitrator or governmental or regulatory authority
applicable to Counterparty or any of its subsidiaries; except, in the case of
clauses (i) and (iii) above, for any such conflict, breach, default or violation
that would not, individually or in the aggregate, reasonably be expected to have a
material adverse effect on the business, properties, management, financial position,
stockholders’ equity, results of operations or prospects of Counterparty and its
subsidiaries taken as a whole or on the performance by Counterparty of its
obligations under this Confirmation (“Material Adverse Effect”).
	 
	 	(e)	 	No consent, approval, authorization, order, registration or qualification of or
with any court or arbitrator or governmental or regulatory authority is required for
the execution, delivery and performance by Counterparty of this Confirmation and the
consummation of the transactions contemplated hereby, except for (i) such consents,
approvals, authorizations, orders and registrations or qualifications as may be
required under applicable state securities laws or (ii) where the failure to obtain or
make any such consents, approvals, authorizations, orders and registrations or
qualifications would not, individually or in the aggregate, reasonably be expected to
have a Material Adverse Effect, provided that such failure to obtain or make any such
consents, approvals, authorizations, orders and registrations or qualifications does
not prevent Counterparty from performing its obligations under this Confirmation.
	 
	 	(f)	 	Counterparty is not and, after giving effect to the transactions contemplated
hereby, will not be required to register as an “investment company” or an entity
“controlled” by an “investment company” within the meaning of the Investment Company
Act of 1940, as amended, and the rules and regulations of the Securities and Exchange
Commission thereunder.
	 
	 	(g)	 	Counterparty is an “eligible contract participant” (as such term is defined in
Section 1a(12) of the Commodity Exchange Act, as amended, other than a person that is
an eligible contract participant under Section 1a(12)(C) of the Commodity Exchange
Act).

13

 

			
	 
	 	

	 	(h)	 	Counterparty and each of its affiliates is not, on the date hereof, in
possession of any material non-public information with respect to Counterparty or the
Shares.

	9.	 	Other Provisions.

	 	(a)	 	Opinions. Counterparty shall deliver to Dealer an opinion of counsel,
dated as of the Trade Date, with respect to the matters set forth in Sections 8(a)
through (e) of this Confirmation. Delivery of such opinion to Dealer shall be a
condition precedent for the purpose of Section 2(a)(iii) of the Agreement with respect
to each obligation of Dealer under Section 2(a)(i) of the Agreement.
	 
	 	(b)	 	Repurchase Notices. Counterparty shall, on any day on which
Counterparty effects any repurchase of Shares, promptly give Dealer a written notice of
such repurchase (a “Repurchase Notice”) on such day if following such repurchase, the
number of outstanding Shares as determined on such day is (i) less than 40.1 million
(in the case of the first such notice) or (ii) thereafter more than 2.7 million less
than the number of Shares included in the immediately preceding Repurchase Notice.
Counterparty agrees to indemnify and hold harmless Dealer and its affiliates and their
respective officers, directors, employees, affiliates, advisors, agents and controlling
persons (each, an “Indemnified Person”) from and against any and all losses (including
losses relating to Dealer’s hedging activities as a consequence of becoming, or of the
risk of becoming, a Section 16 “insider”, including without limitation, any forbearance
from hedging activities or cessation of hedging activities and any losses in connection
therewith with respect to the Transaction), claims, damages, judgments, liabilities and
expenses (including reasonable attorney’s fees), joint or several, which an Indemnified
Person may become subject to, as a result of Counterparty’s failure to provide Dealer
with a Repurchase Notice on the day and in the manner specified in this paragraph, and
to reimburse, within 30 days, upon written request, each of such Indemnified Persons
for any reasonable legal or other expenses incurred in
connection with investigating, preparing for, providing testimony or other evidence
in connection with or defending any of the foregoing. If any suit, action,
proceeding (including any governmental or regulatory investigation), claim or demand
shall be brought or asserted against the Indemnified Person as a result of
Counterparty’s failure to provide Dealer with a Repurchase Notice in accordance with
this paragraph, such Indemnified Person shall promptly notify Counterparty in
writing, and Counterparty, upon request of the Indemnified Person, shall retain
counsel reasonably satisfactory to the Indemnified Person to represent the
Indemnified Person and any others Counterparty may designate in such proceeding and
shall pay the reasonable out-of-pocket fees and expenses of such counsel related to
such proceeding. Counterparty shall not be liable for any settlement of any
proceeding contemplated by this paragraph that is effected without its written
consent, but if settled with such consent or if there be a final judgment for the
plaintiff, Counterparty agrees to indemnify any Indemnified Person from and against
any loss or liability by reason of such settlement or judgment. Counterparty shall
not, without the prior written consent of the Indemnified Person, effect any
settlement of any pending or threatened proceeding contemplated by this paragraph
that is in respect of which any Indemnified Person is a party and indemnity has been
sought hereunder by such Indemnified Person, unless such settlement includes an
unconditional release of such Indemnified Person from all liability on claims that
are the subject matter of such proceeding on terms reasonably satisfactory to such
Indemnified Person. If the indemnification provided for in this paragraph is
unavailable to an Indemnified Person or insufficient in respect of any losses,
claims, damages or liabilities referred to therein, then Counterparty hereunder, in
lieu of indemnifying such Indemnified Person thereunder, shall contribute to the
amount paid or payable by such Indemnified Person as a result of such losses,
claims, damages or liabilities. The remedies provided for in this paragraph (b) are
not exclusive and shall not limit any rights or remedies which may otherwise be
available to any Indemnified Person at law or in equity. The indemnity and
contribution agreements contained in this paragraph shall remain operative and in
full force and effect regardless of the termination of the Transaction.

14

 

			
	 
	 	

	 	(c)	 	Regulation M. Counterparty is not on the Trade Date engaged in a
distribution, as such term is used in Regulation M under the Securities Exchange Act of
1934, as amended (the “Exchange Act”), of any securities of Counterparty, other than a
distribution meeting the requirements of the exception set forth in Rules 101(b)(10)
and 102(b)(7) of Regulation M. Counterparty shall not, until the second Scheduled
Trading Day immediately following the Effective Date, engage in any such distribution.
	 
	 	(d)	 	No Manipulation. Counterparty is not entering into the Transaction to
create actual or apparent trading activity in the Shares (or any security convertible
into or exchangeable for the Shares) or to raise or depress or otherwise manipulate the
price of the Shares (or any security convertible into or exchangeable for the Shares)
in violation of the Exchange Act.
	 
	 	(e)	 	Transfer or Assignment.

	 	(i)	 	Counterparty shall have the right to transfer or assign its
rights and obligations hereunder with respect to all, but not less than all, of
the Options hereunder (such Options, the “Transfer Options”); provided that
such transfer or assignment shall be subject to reasonable conditions that
Dealer may impose, including but not limited, to the following conditions:

	 	(A)	 	With respect to any Transfer Options,
Counterparty shall not be released from its notice and indemnification
obligations pursuant to Section 9(b) or any obligations under Section
9(n) or 9(s) of this Confirmation;
	 
	 	(B)	 	Any Transfer Options shall only be transferred
or assigned to a third party that is a United States person (as defined
in the Internal Revenue Code of 1986, as amended);
	 
	 	(C)	 	Such transfer or assignment shall be effected
on terms, including any reasonable undertakings by such third party
(including, but not limited to, an undertaking with respect to
compliance with applicable securities laws in a manner that, in the
reasonable judgment of Dealer, will not expose Dealer to material risks
under applicable securities laws) and execution of any documentation
and delivery of legal opinions with respect to securities laws and
other matters by such third party and Counterparty, as are requested
and reasonably satisfactory to Dealer;
	 
	 	(D)	 	Dealer will not, as a result of such transfer
and assignment, be required to pay the transferee on any payment date
an amount under Section 2(d)(i)(4) of the Agreement greater than an
amount that Dealer would have been required to pay to Counterparty in
the absence of such transfer and assignment;
	 
	 	(E)	 	An Event of Default, Potential Event of Default
or Termination Event will not occur as a result of such transfer and
assignment;
	 
	 	(F)	 	Without limiting the generality of clause (B),
Counterparty shall cause the transferee to make such Payee Tax
Representations and to provide such tax documentation as may be
reasonably requested by Dealer to permit Dealer to determine that
results described in clauses (D) and (E) will not occur upon or after
such transfer and assignment; and
	 
	 	(G)	 	Counterparty shall be responsible for all
reasonable costs and expenses, including reasonable counsel fees,
incurred by Dealer in connection with such transfer or assignment.

15

 

			
	 
	 	

	 	(ii)	 	Dealer may, without Counterparty’s consent, transfer or assign
all or any part of its rights or obligations under the Transaction at any time
to any affiliate of Dealer (A) that has a rating for its long term, unsecured
and unsubordinated indebtedness that is equal to or better than the best of
Dealer’s credit rating and the credit rating of any guarantor of Dealer’s
obligations hereunder, in each case, at the time of the transfer or assignment,
or (B) whose obligations hereunder will be guaranteed, pursuant to the terms of
a customary guarantee in a form used by Dealer generally for similar
transactions, by Dealer or any parent of Dealer that has a credit rating that
is equal to or better than the best of Dealer’s credit rating and the credit
rating of any guarantor of Dealer’s obligations hereunder, in each case, at the
time of the transfer or assignment; provided that any such transfer or
assignment shall be subject to the conditions that (I) following such transfer
or assignment, the terms and conditions of the Agreement as so transferred or
assigned (the “Transferred Agreement”) shall be substantially the same as the
terms and conditions of the Agreement immediately prior to such transfer or
assignment, (II) Counterparty will not be required to pay to the transferee an
amount in respect of an Indemnifiable Tax under Section 2(d)(i)(4) of the
Transferred Agreement greater than the amount in respect of which Counterparty
would have been required to pay to Dealer under Section 2(d)(i)(4) in the
absence of the transfer, (III) Counterparty will not receive any payment under
the Transferred Agreement from which an amount is required to be withheld or
deducted for or on account of a Tax with respect to which no additional amount
is required to be paid by the transferee under Section 2(d)(i)(4) of the
Transferred Agreement (other than by reason of Section 2(d)(i)(4)(A) or (B)
thereof), (IV) neither an Event of Default with respect to which Dealer is the
Defaulting Party nor a Termination Event with respect to which Dealer is the
sole Affected Party shall have occurred and be continuing at the time of the
transfer, and neither an Event of Default nor a Termination Event shall occur
as a result of the transfer, (V) each of Dealer and the transferee is a dealer
in “notional principal contracts” within the meaning of Section
1.446-3(c)(4)(iii) of the U.S. Treasury Regulations and in other derivatives,
and (VI) Dealer has used its
good faith efforts to provide prior notice to Counterparty of such transfer
and the proposed date of such transfer, and Dealer shall provide written
notice to Counterparty reasonably promptly following such transfer. In
addition, if at any time (A) the Section 16 Percentage exceeds 7.5%, (B) the
Option Equity Percentage exceeds 14.5%, or (C) the Share Amount exceeds the
Applicable Share Limit (if any applies) (any such condition described in
clauses (A), (B) or (C), an “Excess Ownership Position”), Dealer may,
without Counterparty’s consent, transfer or assign all or any part of its
rights or obligations under the Transaction to any third party who is a
dealer in “notional principal contracts” within the meaning of Section
1.446-3(c)(4)(iii) of the U.S. Treasury Regulations and in other
derivatives, and with a rating for its long term, unsecured and
unsubordinated indebtedness equal to or better than the lesser of (x) the
credit rating of Dealer at the time of the transfer and (y) A- by Standard
and Poor’s Rating Group, Inc. or its successor (“S&P”), or A3 by Moody’s
Investor Service, Inc. (“Moody’s”) or, if either S&P or Moody’s ceases to
rate such debt, at least an equivalent rating or better by a substitute
rating agency mutually agreed by Counterparty and Dealer. If at any time an
Excess Ownership Position exists, Dealer may designate any Exchange Business
Day as an Early Termination Date with respect to all or a portion of the
Transaction (the “Terminated Portion”) such that following such termination
no Excess Ownership Position exists; provided that Dealer may only designate
an Early Termination Date pursuant to this Section 9(e)(ii) if Dealer has
used its good faith efforts to notify Counterparty of such Excess Ownership
Position, and Dealer is unable, acting in good faith and after using its
commercially reasonable efforts, to effect a transfer or assignment of
Options to a third party in accordance with this Section 9(e)(ii) on pricing
terms reasonably acceptable to Dealer and within a time period reasonably
acceptable Dealer such that no Excess Ownership Position exists. In the
event that Dealer so designates an Early Termination Date with respect to a
Terminated Portion, a payment shall be made

16

 

			
	 
	 	

	 	 	 	pursuant to Section 6 of the
Agreement as if (1) an Early Termination Date had been designated in respect
of a Transaction having terms identical to the Transaction and a Number of
Options equal to the number of Options underlying the Terminated Portion,
(2) Counterparty were the sole Affected Party with respect to such partial
termination and (3) the Terminated Portion were the sole Affected
Transaction (and, for the avoidance of doubt, the provisions of Section 9(l)
shall apply to any amount that is payable by Dealer to Counterparty pursuant
to this sentence as if Counterparty was not the Affected Party). The
“Section 16 Percentage” as of any day is the fraction, expressed as a
percentage, (A) the numerator of which is the number of Shares that Dealer
and each person subject to aggregation of Shares with Dealer under Section
13 or Section 16 of the Exchange Act and rules promulgated thereunder
directly or indirectly beneficially own (as defined under Section 13 or
Section 16 of the Exchange Act and rules promulgated thereunder) and (B) the
denominator of which is the number of Shares outstanding. The “Option
Equity Percentage” as of any day is the fraction, expressed as a percentage,
(A) the numerator of which is the sum of (1) the product of the Number of
Options and the Option Entitlement and (2) the aggregate number of Shares
underlying any other call option transaction sold by Dealer to Counterparty,
and (B) the denominator of which is the number of Shares outstanding. The
“Share Amount” as of any day is the number of Shares that Dealer and any
person whose ownership position would be aggregated with that of Dealer
(Dealer or any such person, a “Dealer Person”) under any insurance or other
law, rule, regulation, regulatory order or organizational documents or
contracts of Counterparty that are, in each case, applicable to ownership of
Shares (“Applicable Restrictions”), owns, beneficially owns, constructively
owns, controls, holds the power to vote or otherwise meets a relevant
definition of ownership under any Applicable Restriction, as determined by
Dealer in its reasonable discretion. The “Applicable Share Limit” means a
number of Shares equal to (A) the minimum number of Shares that could give
rise to reporting or registration obligations or other requirements
(including obtaining prior approval from any person or entity) of a Dealer
Person, or could result in
an adverse effect on a Dealer Person, under any Applicable Restriction, as
determined by Dealer in its reasonable discretion, minus (B) 1% of the
number of Shares outstanding.
	 
	 	(iii)	 	Notwithstanding any other provision in this Confirmation to
the contrary requiring or allowing Dealer to purchase, sell, receive or deliver
any Shares or other securities, or make or receive any payment in cash, to or
from Counterparty, Dealer may designate any of its affiliates to purchase,
sell, receive or deliver such Shares or other securities, or to make or receive
such payment in cash, and otherwise to perform Dealer’s obligations in respect
of the Transaction and any such designee may assume such obligations. Dealer
shall be discharged of its obligations to Counterparty only to the extent of
any such performance.

	 	(f)	 	Staggered Settlement. If upon advice of counsel with respect to
applicable legal and regulatory requirements, including any requirements relating to
Dealer’s hedging activities hereunder, Dealer reasonably determines that it would not
be practicable or advisable to deliver, or to acquire Shares to deliver, any or all of
the Shares to be delivered by Dealer on the Settlement Date for the Transaction, Dealer
may, by notice to Counterparty on or prior to any Settlement Date (a “Nominal
Settlement Date”), elect to deliver the Shares on two or more dates (each, a “Staggered
Settlement Date”) as follows:

	 	(i)	 	in such notice, Dealer will specify to Counterparty the related
Staggered Settlement Dates (the first of which will be such Nominal Settlement
Date and the last of which will be no later than the twentieth (20th) Exchange
Business Day following such Nominal Settlement Date) and the number of Shares
that it will deliver on each Staggered Settlement Date;

17

 

			
	 
	 	

	 	(ii)	 	the aggregate number of Shares that Dealer will deliver to
Counterparty hereunder on all such Staggered Settlement Dates will equal the
number of Shares that Dealer would otherwise be required to deliver on such
Nominal Settlement Date; and
	 
	 	(iii)	 	if the Net Share Settlement terms set forth above were to
apply on the Nominal Settlement Date, then the Net Share Settlement terms will
apply on each Staggered Settlement Date, except that the Net Shares will be
allocated among such Staggered Settlement Dates as specified by Dealer in the
notice referred to in clause (i) above.

	 	(g)	 	[Reserved.]
	 
	 	(h)	 	Dividends. If at any time during the period from and including the
Effective Date, to but excluding the Expiration Date, (i) an ex-dividend date for a
regular quarterly cash dividend occurs with respect to the Shares (an “Ex-Dividend
Date”), and that dividend is less than the Regular Dividend on a per Share basis or
(ii) if no Ex-Dividend Date for a regular quarterly cash dividend occurs with respect
to the Shares in any quarterly dividend period of Counterparty, then the Calculation
Agent will make a corresponding adjustment to any one or more of the Strike Price,
Number of Options, Option Entitlement and/or any other variable relevant to the
exercise, settlement or payment for the Transaction to preserve the fair value of the
Options to Dealer after taking into account such dividend or lack thereof. “Regular
Dividend” shall mean USD 0.125 per Share per quarter. Upon any adjustment to the
Initial Dividend Threshold (as defined in the Indenture) for the Convertible Notes
pursuant to the Indenture, the Calculation Agent will make a corresponding adjustment
to the Regular Dividend for the Transaction.
	 
	 	(i)	 	Additional Termination Events. Notwithstanding anything to the
contrary in this Confirmation if an event of default with respect to Counterparty
occurs under the terms of the Convertible Notes as set forth in Section 6.01 of the
Indenture and results in the Convertible Notes becoming due and payable pursuant to the
terms of the Indenture before they would otherwise have been due and payable, then the
occurrence of such event shall constitute an Additional Termination Event
applicable to the Transaction and, with respect to such Additional Termination
Event, (A) Counterparty shall be deemed to be the sole Affected Party, (B) the
Transaction shall be the sole Affected Transaction and (C) Dealer shall be the party
entitled to designate an Early Termination Date pursuant to Section 6(b) of the
Agreement.
	 
	 	(j)	 	Amendments to Equity Definitions.

	 	(i)	 	Section 12.6(a)(ii) of the Equity Definitions is hereby amended
by (1) deleting from the fourth line thereof the word “or” after the word
“official” and inserting a comma therefor, and (2) deleting the semi-colon at
the end of subsection (B) thereof and inserting the following words therefor
“or (C) at Dealer’s option, the occurrence of any of the events specified in
Section 5(a)(vii)(1) through (9) of the ISDA Master Agreement with respect to
that Issuer.”
	 
	 	(ii)	 	Section 12.9(b)(i) of the Equity Definitions is hereby amended
by (1) replacing “either party may elect” with “Dealer may elect” and (2)
replacing “notice to the other party” with “notice to Counterparty” in the
first sentence of such section.

	 	(k)	 	No Setoff. Neither party shall have the right to set off any
obligation that it may have to the other party under the Transaction against any
obligation such other party may have to it, whether arising under the Agreement, this
Confirmation or any other agreement between the parties hereto, by operation of law or
otherwise.
	 
	 	(l)	 	Alternative Calculations and Payment on Early Termination and on Certain
Extraordinary Events. If in respect of the Transaction, an amount is payable by
Dealer to Counterparty (i) pursuant to Section 12.7 or Section 12.9 of the Equity
Definitions or (ii) pursuant to Section

18

 

			
	 
	 	

	 	 	 	6(d)(ii) of the Agreement (any such amount, a
“Payment Obligation”), Counterparty may request Dealer to satisfy the Payment
Obligation by the Share Termination Alternative (as defined below) (except that
Counterparty shall not have the right to make such an election in the event of (I) a
Nationalization, Insolvency, Merger Event or Tender Offer, in each case, in which the
consideration to be paid to holders of Shares consists solely of cash, (II) a Merger
Event or Tender Offer that is within Counterparty’s control, or (III) an Event of
Default in which Counterparty is the Defaulting Party or a Termination Event in which
Counterparty is the Affected Party, other than an Event of Default of the type
described in Section 5(a)(iii), (v), (vi), (vii) or (viii) of the Agreement or a
Termination Event of the type described in Section 5(b) of the Agreement in each case
that resulted from an event or events outside Counterparty’s control) and shall give
irrevocable telephonic notice to Dealer, confirmed in writing within one Scheduled
Trading Day, no later than 12:00 p.m. (New York City time) on the Merger Date, the
Tender Offer Date, the Announcement Date (in the case of Nationalization, Insolvency or
Delisting), the Early Termination Date or date of cancellation, as applicable; provided
that if Counterparty does not validly request Dealer to satisfy the Payment Obligation
by the Share Termination Alternative, Dealer shall have the right, in its sole
discretion, to satisfy its Payment Obligation by the Share Termination Alternative,
notwithstanding Counterparty’s election to the contrary.

	 	 	 	 	 

	 

	 	Share Termination Alternative:
	 	If the Share Termination
Alternative is applicable in
respect of any Payment
Obligation, Dealer shall
deliver to Counterparty the
Share Termination Delivery
Property on, or within a
commercially reasonable period
of time after, the date when
the Payment Obligation would
otherwise be due pursuant to
Section 12.7 or 12.9 of the
Equity Definitions or Section
6(d)(ii) and 6(e) of the
Agreement, as applicable (the
“Share Termination Payment
Date”), in satisfaction of the
Payment Obligation in the
manner reasonably requested by
Counterparty free of payment.
	 
	 	 	 	 
	 

	 	Share Termination Delivery Property:
	 	A number of Share Termination
Delivery Units, as calculated
by the Calculation Agent,
equal to the Payment
Obligation divided by the
Share Termination Unit Price.
The Calculation Agent shall
adjust the Share Termination
Delivery Property by replacing
any fractional portion of a
security therein with an
amount of cash equal to the
value of such fractional
security based on the values
used to calculate the Share
Termination Unit Price.
	 
	 	 	 	 
	 

	 	Share Termination Unit Price:
	 	The value to Dealer of
property contained in one
Share Termination Delivery
Unit, as determined by the
Calculation Agent in its
discretion by commercially
reasonable means and notified
by the Calculation Agent to
Dealer at the time of
notification of the Payment
Obligation. For the avoidance
of doubt, the parties agree
that in determining the Share
Termination Delivery Unit
Price the Calculation Agent
may consider the purchase
price paid in connection with
the purchase of Share
Termination Delivery Property.
	 
	 	 	 	 
	 

	 	Share Termination Delivery Unit:
	 	One Share or, if a Merger
Event has occurred and a
corresponding adjustment to
the Transaction has been

19

 

			
	 
	 	

	 	 	 	 	 

	 

	 	 	 	made, a unit consisting of the
number or amount of each type
of property received by a
holder of one Share (without
consideration of any
requirement to pay cash or
other consideration in lieu of
fractional amounts of any
securities) in such Merger
Event, as determined by the
Calculation Agent.
	 
	 	 	 	 
	 

	 	Failure to Deliver:
	 	Applicable
	 
	 	 	 	 
	 

	 	Other applicable provisions:
	 	If Share Termination
Alternative is applicable, the
provisions of Sections 9.8,
9.9, 9.11, 9.12 and 10.5 (as
modified above) of the Equity
Definitions will be
applicable, except that all
references in such provisions
to “Physically-settled” shall
be read as references to
“Share Termination Settled”
and all references to “Shares”
shall be read as references to
“Share Termination Delivery
Units”. “Share Termination
Settled” in relation to the
Transaction means that the
Share Termination Alternative
is applicable to the
Transaction.

	 	(m)	 	Waiver of Jury Trial. Each party waives, to the fullest extent
permitted by applicable law, any right it may have to a trial by jury in respect of any
suit, action or proceeding relating to the Transaction. Each party (i) certifies that
no representative, agent or attorney of either party has represented, expressly or
otherwise, that such other party would not, in the event of such a suit, action or
proceeding, seek to enforce the foregoing waiver and (ii) acknowledges that it and the
other party have been induced to enter into the Transaction, as applicable, by, among
other things, the mutual waivers and certifications provided herein.
	 
	 	(n)	 	Registration. Counterparty hereby agrees that if, in the good faith
reasonable judgment of Dealer, the Shares (“Hedge Shares”) acquired by Dealer for the
purpose of hedging its obligations pursuant to the Transaction cannot be sold in the
public market by Dealer without registration
under the Securities Act of 1933, as amended (the “Securities Act”), Counterparty
shall, at its election, either (i) in order to allow Dealer to sell the Hedge Shares
in a registered offering, use commercially reasonable efforts to make available to
Dealer an effective registration statement under the Securities Act and enter into
an agreement, in customary form and in substance reasonably satisfactory to Dealer,
substantially in the form of an underwriting agreement for a registered secondary
offering; provided, however, that if Dealer, in its sole reasonable discretion, is
not satisfied with access to due diligence materials, the results of its due
diligence investigation, or the procedures and documentation for the registered
offering referred to above, then clause (ii) or clause (iii) of this paragraph shall
apply at the election of Counterparty, (ii) in order to allow Dealer to sell the
Hedge Shares in a private placement, enter into a private placement agreement
substantially similar to private placement purchase agreements customary for private
placements of equity securities, in form and in substance reasonably satisfactory to
Dealer (in which case, the Calculation Agent shall make any adjustments to the terms
of the Transaction that are necessary, in its reasonable judgment, to compensate
Dealer for any discount from the public market price of the Shares incurred on the
sale of Hedge Shares in a private placement), or (iii) purchase the Hedge Shares
from Dealer at the Relevant Price on such Exchange Business Days, and in the
amounts, requested by Dealer.
	 
	 	(o)	 	Tax Disclosure. Effective from the date of commencement of discussions
concerning the Transaction, Counterparty and each of its employees, representatives, or
other agents may disclose to any and all persons, without limitation of any kind, the
tax treatment and tax structure of the Transaction and all materials of any kind
(including opinions or other tax analyses) that are provided to Counterparty relating
to such tax treatment and tax structure.

20

 

			
	 
	 	

	 	(p)	 	Right to Extend. Dealer may postpone or add, in whole or in part, any
Valid Day or Valid Days during the Settlement Averaging Period or any other date of
valuation, payment or delivery by Dealer, with respect to some or all of the Options
hereunder, if Dealer determines, in its commercially reasonable judgment, that such
action is reasonably necessary or appropriate to preserve Dealer’s hedging or hedge
unwind activity hereunder in light of existing liquidity conditions or to enable Dealer
to effect purchases of Shares in connection with its hedging, hedge unwind or
settlement activity hereunder in a manner that would, if Dealer were Counterparty or an
affiliated purchaser of Counterparty, be in compliance with applicable legal,
regulatory or self-regulatory requirements, or with related policies and procedures
applicable to Dealer.
	 
	 	(q)	 	Status of Claims in Bankruptcy. Dealer acknowledges and agrees that
this Confirmation is not intended to convey to Dealer rights against Counterparty with
respect to the Transaction that are senior to the claims of common stockholders of
Counterparty in any United States bankruptcy proceedings of Counterparty; provided that
nothing herein shall limit or shall be deemed to limit Dealer’s right to pursue
remedies in the event of a breach by Counterparty of its obligations and agreements
with respect to the Transaction; provided, further, that nothing herein shall limit or
shall be deemed to limit Dealer’s rights in respect of any transactions other than the
Transaction.
	 
	 	(r)	 	Securities Contract; Swap Agreement. The parties hereto intend for (i)
the Transaction to be a “securities contract” and a “swap agreement” as defined in the
Bankruptcy Code (Title 11 of the United States Code) (the “Bankruptcy Code”), and the
parties hereto to be entitled to the protections afforded by, among other Sections,
Sections 362(b)(6), 362(b)(17), 546(e), 546(g), 555 and 560 of the Bankruptcy Code,
(ii) a party’s right to liquidate the Transaction and to exercise any other remedies
upon the occurrence of any Event of Default under the Agreement with respect to the
other party to constitute a “contractual right” as described in the Bankruptcy Code,
and (iii) each payment and delivery of cash, securities or other property hereunder to
constitute a “margin payment” or “settlement payment” and a “transfer” as defined in
the Bankruptcy Code.
	 
	 	(s)	 	Notice of Certain Other Events. Counterparty covenants and agrees that:

	 	(i)	 	promptly following the public announcement of the results of
any election by the holders of Shares with respect to the consideration due
upon consummation of any consolidation, merger and binding share exchange to
which Counterparty is a party, or any sale of all or substantially all of
Counterparty’s assets, in each case pursuant to which the Shares will be
converted into cash, securities or other property, Counterparty shall give
Dealer written notice of the types and amounts of consideration that holders of
Shares have elected to receive upon consummation of such transaction or event
(the date of such notification, the “Consideration Notification Date”);
provided that in no event shall the Consideration Notification Date be later
than the date on which such transaction or event is consummated; and
	 
	 	(ii)	 	promptly following any adjustment to the Convertible Notes in
connection with any Potential Adjustment Event, Merger Event or Tender Offer,
Counterparty shall give Dealer written notice of the details of such
adjustment.

	 	(t)	 	Early Unwind. In the event the sale of the “Initial Securities” (as
defined in the Purchase Agreement) is not consummated with the Initial Purchasers for
any reason, or Counterparty fails to deliver to Dealer opinions of counsel as required
pursuant to Section 9(a), in each case by 5:00 p.m. (New York City time) on the Premium
Payment Date, or such later date as agreed upon by the parties (the Premium Payment
Date or such later date, the “Early Unwind Date”), the Transaction shall automatically
terminate (the “Early Unwind”) on the Early Unwind Date and (i) the Transaction and all
of the respective rights and obligations of Dealer and Counterparty under the
Transaction shall be cancelled and terminated and (ii) each party shall be released and
discharged by the other party from and agrees not to make any claim against the other
party with respect to any obligations or liabilities of the other party arising out of
and to be performed in

21

 

			
	 
	 	

	 	 	 	connection with the Transaction either prior to or after the
Early Unwind Date; provided that Counterparty shall purchase from Dealer on the Early
Unwind Date all Shares purchased by Dealer or one or more of its affiliates in
connection with the Transaction at the then prevailing market price. Each of Dealer
and Counterparty represent and acknowledge to the other that, subject to the proviso
included in this Section 9(t), upon an Early Unwind, all obligations with respect to
the Transaction shall be deemed fully and finally discharged.
	 
	 	(u)	 	Payment by Counterparty. In the event that (i) an Early Termination
Date occurs or is designated with respect to the Transaction as a result of a
Termination Event or an Event of Default (other than an Event of Default arising under
Section 5(a)(ii) or 5(a)(iv) of the Agreement) and, as a result, Counterparty owes to
Dealer an amount calculated under Section 6(e) of the Agreement, or (ii) Counterparty
owes to Dealer, pursuant to Section 12.7 or Section 12.9 of the Equity Definitions, an
amount calculated under Section 12.8 of the Equity Definitions, such amount shall be
deemed to be zero.

22

 

			
	 
	 	

     Counterparty hereby agrees (a) to check this Confirmation carefully and immediately upon
receipt so that errors or discrepancies can be promptly identified and rectified and (b) to confirm
that the foregoing (in the exact form provided by Dealer) correctly sets forth the terms of the
agreement between Dealer and Counterparty with respect to the Transaction, by manually signing this
Confirmation or this page hereof as evidence of agreement to such terms and providing the other
information requested herein and immediately returning an executed copy to Chris Hutmaker,
Facsimile No. 212-326-9882.

	 	 	 	 	 
	 	Very truly yours,

Bank of America, N.A.

 	 
	 	By:  	/s/ Christopher A. Hutmaker
 	 
	 	 	Authorized Signatory 	 
	 	 	Name: Christopher A. Hutmaker 	 
	 

Accepted and confirmed

as of the Trade Date:

	 	 	 	 
	Tower Group, Inc.

 	 
	By:  	/s/ William E. Hitselberger
 	 
	 	Authorized Signatory 	 
	 	Name: William E. Hitselberger

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