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                                                                    Exhibit 10.2

                            TECUMSEH PRODUCTS COMPANY
                      LONG-TERM INCENTIVE EQUITY AWARD PLAN
                    (AS ORIGINALLY ADOPTED ON JULY 31, 2007)

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     Tecumseh Products Company, a Michigan corporation (the "Company"), has
adopted this Long-Term Incentive Equity Award Plan (this "Plan") for the benefit
of its eligible employees. This Plan is effective as of July 31, 2007.

     The purposes of this Plan are as follows:

     A. To join the interests of management and other employees with the
interests of shareholders by providing an additional incentive for selected
management and other Employees to further the growth, development, and financial
success of the Company by personally benefiting through the ownership of Company
stock and/or stock rights that recognize such growth, development, and financial
success.

     B. To enable the Company to obtain and retain the services of Employees
considered essential to the long-term success of the Company by offering them an
opportunity to own stock in the Company and/or stock rights that will reflect
the growth, development, and financial success of the Company.

     C. This Plan is intended to constitute an unfunded, nonqualified plan of
deferred compensation for a select group of management or highly compensated
employees, within the meaning of Section 201(2) of the Employee Retirement
Income Security Act of 1974, as amended ("ERISA"), that is exempt from the
requirements of Title 1 of ERISA.

1.   DEFINITIONS

     Wherever the following terms are used in this Plan they have the meanings
specified below unless the context clearly indicates otherwise. The singular
pronoun includes the plural where the context so indicates.

     "Administrator" means the Committee, unless the Committee has delegated its
authority to administer this Plan as provided in Section 9.5, in which events
"Administrator" means the delegated sub-committee.

     "Award" means an Option, a Restricted Stock award, or a Performance Award
awarded or granted under this Plan.

     "Award Agreement" means a written agreement executed by an authorized
officer of the Company and the Holder containing such terms and conditions with
respect to an Award as the Administrator determines, consistent with this Plan.

     "Award Limit" means 300,000 shares of Class A Stock, as adjusted pursuant
to Section 10.3.

     "Board" means the Board of Directors of the Company.

     "Change in Control" means any change that occurs after the date this Plan
is first approved by the Company's shareholders and that qualifies as a change
of control event pursuant to Section 409A of the Code, Proposed Treasury
Regulation Section 1.409A-3(g)(5), and all subsequent relevant authority,
including any one or more of the following events::

          (a) a change in the ownership of the Company in compliance with
     Proposed Treasury Regulation Section 1.409A-3(g)(5)(v) pursuant to which
     any person or group acquires ownership of stock of the Company that,
     together with stock held by that person

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     or group, constitutes more than 50% of the total fair market value or total
     voting power of the stock of the Company;

          (b) a change in the effective control of the Company pursuant to
     Proposed Treasury Regulation Section 1.409A-3(g)(5)(vi), pursuant to which
     either:

               (1) any one person, or more than one person acting as a group,
          acquires (or has acquired during the twelve-month period ending on the
          date of the most recent acquisition by that person or group) ownership
          (including acquisition of beneficial ownership) of stock of the
          Company possessing 35% or more of the total voting power of the stock
          of the Company; or

               (2) a majority of members of the Company's board of directors is
          replaced during any twelve-month period by directors whose appointment
          or election is not endorsed by a majority of the members of the
          Company's board of directors before the date of the appointment or
          election; or

          (c) a change in the ownership of a substantial portion of the
     Company's assets pursuant to Proposed Treasury Regulation Section
     1.409A-3(g)(5)(vii) pursuant to which any one person or group acquires (or
     has acquired during the twelve-month period ending on the date of the most
     recent acquisition by that person or group) assets from the Company that
     have a total gross fair market value (as defined in Proposed Treasury
     Regulation Section 1.409A-3(g)(5)(vii)) equal to or more than 40% of the
     total gross fair market value of all of the assets of the Company
     immediately before the acquisition or acquisitions by that person or group.

For purposes of this definition:

          (A) "person" means a person as defined in Section 3(a)(9) of the
     Exchange Act;

          (B) "beneficial ownership" is to be determined in accordance with Rule
     13d-3 promulgated under the Exchange Act or any successor regulation;

          (C) "group" means a group as described in Rule 13d-5 promulgated under
     the Exchange Act or any successor regulation provided the group falls
     within the purview of Proposed Treasury Regulation Sections
     1.409A-3(g)(v)(B), 1.409A-3(g)(5)(vi)(D), or 1.409A-3(g)(5)(vii)(C), as
     applicable; and

          (D) the formation of a group under this definition will have the
     effect described in paragraph (b) of Rule 13d-5 promulgated under the
     Exchange Act or any successor regulation.

In addition, if an Employment Contract provides that a Holder is to receive
severance pay or other rights or benefits if his or her employment terminates
following a "change in control, "change of control," or other similar defined
event, then the occurrence of that event will be a Change in Control for
purposes of this Agreement with respect to that Holder.

     "Class A Stock" means the Company's Class A Common Stock.

     "Code" means the Internal Revenue Code of 1986, as amended.

     "Committee" means the Governance, Compensation, and Nominating Committee of
the Board, or another committee or subcommittee of the Board, appointed as
provided in Section 9.1.

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     "Company" means Tecumseh Products Company, a Michigan corporation.

     "Corporate Transaction" means:

          (a) the shareholders of the Company approve a merger, consolidation,
     or share exchange of the Company with any other corporation (or other
     entity), other than a merger, consolidation, or share exchange that would
     result in the voting securities of the Company outstanding immediately
     before the transaction continuing to represent (either by remaining
     outstanding or by being converted into voting securities of the surviving
     entity) more than 50% of the combined voting power of the voting securities
     of the Company or the surviving entity outstanding immediately after the
     merger, consolidation, or share exchange; or

          (b) the shareholders of the Company approve a plan of complete
     liquidation of the Company or an agreement for the sale or disposition by
     the Company of all or substantially all of the Company's assets.

     "DRO" means a domestic relations order as defined by the Code or Title I of
the Employee Retirement Income Security Act of 1974, as amended, or the rules
either.

     "Effective Date" means July 31, 2007.

     "Employment Contract" means a written employment contract between a Holder
and the Company or a Subsidiary.

     "Employee" means any officer or other employee (as defined in accordance
with Section 3401(c) of the Code) of the Company or any Subsidiary.

     "Exchange Act" means the Securities Exchange Act of 1934, as amended.

     "Fair Market Value" of a share of Class A Stock as of a given date means:

          (a) the closing price of a share of Class A Stock on the principal
     exchange on which shares of Class A Stock are then trading, if any (or as
     reported on any composite index which includes that principal exchange), on
     that date, or if shares were not traded on that date, then on the next
     preceding date on which a trade occurred; or

          (b) if Class A Stock is not traded on an exchange but is quoted on
     Nasdaq or a successor quotation system, the average of the closing
     representative bid and asked prices for the Class A Stock on such date as
     reported by Nasdaq or the successor quotation system; or

          (c) if Class A Stock is not publicly traded on an exchange and not
     quoted on Nasdaq or a successor quotation system, the fair market value of
     a share of Class A Stock as established by the Administrator acting in good
     faith.

     "Holder" means a person who has been granted or awarded an Award.

     "Option" means a stock option granted under Section 4 of this Plan. Any
Option granted under this Plan will be a non-qualified stock option and not an
incentive stock option within the meaning of Section 422 of the Code.

     "Performance Award" means an award of the opportunity to receive shares of
Class A Stock made under Section 8 of this Plan.

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     "Performance Criteria" means the following business criteria with respect
to the Company, any Subsidiary, or any division or operating unit:

          (a) net income;

          (b) pre-tax income;

          (c) operating income or margin;

          (d) cash flow;

          (e) earnings per share;

          (f) return on equity;

          (g) return on invested capital or assets;

          (h) cost reductions or savings;

          (i) sales or revenue growth;

          (j) appreciation in the fair market value of Class A Stock; and

          (k) earnings before any one or more of the following items: interest,
     taxes, depreciation, or amortization;

each as determined in accordance with generally accepted accounting principles
and subject to any adjustments that may be specified by the Committee with
respect to a Performance Award.

     "Permanent Disability" means the inability of the Holder to perform his
usual duties as an Employee by reason of any medically determinable physical or
mental impairment expected to result in death or to be of continuous duration of
twelve months or more.

     "Plan" means this Long-Term Incentive Equity Award Plan, as amended and/or
restated from time to time.

     "Restricted Stock" means Class A Stock subject to restrictions and awarded
under Section 7 of this Plan.

     "Retirement" means a separation from service with the Company or a
Subsidiary at a time when the Holder is eligible for immediate commencement of a
defined benefit pension (other than a disability pension).

     "Rule 16b-3" means Rule 16b-3 promulgated under the Exchange Act, as
amended from time to time, or any successor rule.

     "Section 162(m) Participant" means any Senior Management Employee whose
compensation for the fiscal year in which the Employee is so designated or a
future fiscal year may be subject to the limit on deductible compensation
imposed by Section 162(m) of the Code. Unless the Administrator determines
otherwise in regard to particular Senior Management Employees whose compensation
is unlikely to be subject to such limit, all Senior Management Employees will be
treated as Section 162(m) Participants.

     "Securities Act" means the Securities Act of 1933, as amended.

     "Senior Management Employee" means any Employee designated by the
Administrator as a Senior Management Employee for purposes of this Plan.

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     "Subsidiary" means any corporation or limited liability company in an
unbroken chain of corporations or limited liability companies beginning with the
Company if each of the corporations and limited liabilities other than the last
one in the unbroken chain then owns stock or other equity interests possessing
50% or more of the total combined voting power of all classes of stock or equity
interests in one of the other corporations or limited liability companies in the
chain.

     "Termination of Employment" means the time when the employee-employer
relationship between a Holder and the Company or any Subsidiary is terminated
for any reason, with or without cause, including but not limited to a
termination by resignation, discharge, death, Permanent Disability, or
Retirement; but excluding:

          (a) terminations where there is a simultaneous reemployment or
     continuing employment of a Holder by the Company or any Subsidiary; and

          (b) at the discretion of the Administrator, terminations which result
     in a temporary severance of the employee-employer relationship.

2.   SHARES SUBJECT TO PLAN

     2.1 Shares Subject to Plan.

          (a) The shares of stock subject to Awards will be Class A Stock.
     Subject to adjustment as provided in Section 10.3, the aggregate number of
     shares that may be issued upon exercise of Options and under all other
     Awards under this Plan may not exceed 1,850,000 shares. The shares of Class
     A Stock issuable upon exercise of Options under other Awards will be
     previously authorized but unissued shares.

          (b) The maximum number of shares that may be subject to Awards granted
     under this Plan to any individual in any fiscal year of the Company may not
     exceed the Award Limit. For purposes of this limitation, where a
     Performance Award is based on performance criteria measured over more than
     one fiscal year, the entire potential Performance Award will be treated as
     part of the Award Limit for the first year of the entire performance cycle
     and not as part of the Award Limit for any other year.

     2.2 Add-back of Options and Other Awards. If any Option or Performance
Award expires or is canceled without having been fully exercised or paid, the
number of shares subject to that Option or Performance Award but as to which the
Option or Performance Award was not exercised or paid before its expiration or
cancellation may again be optioned, granted, or awarded under this Plan, subject
to the limitations of Section 2.1. Any shares subject to Awards that are
adjusted under Section 10.3 and become exercisable with respect to shares of
stock of another corporation are to be considered canceled and may again be
optioned, granted, or awarded under this Plan, subject to the limitations of
Section 2.1. Shares of Class A Stock delivered by the Holder or withheld by the
Company upon the exercise or payment of any Award under this Plan, in payment of
the exercise price or tax withholding, may again be optioned, granted, or
awarded under this Plan, subject to the limitations of Section 2.1. If any
shares of Restricted Stock are surrendered by the Holder under Section 7.4,
those shares may again be optioned, granted, or awarded under this Plan, subject
to the limitations of Section 2.1.

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3.   GRANTING OF AWARDS

     3.1 Award Agreement. Each Award will be evidenced by an Award Agreement.
Award Agreements evidencing Awards intended to qualify as performance-based
compensation as described in Section 162(m)(4)(C) of the Code will contain those
terms and conditions necessary to meet the applicable provisions of Section
162(m) of the Code.

     3.2 Provisions Applicable to Section 162(m) Participants.

          (a) The Administrator, in its discretion, may determine whether an
     Award is to qualify as performance-based compensation as described in
     Section 162(m)(4)(C) of the Code.

          (b) Notwithstanding anything in this Plan to the contrary, the
     Administrator may grant any Award to a Section 162(m) Participant,
     including:

               (1) Restricted Stock, the restrictions with respect to which
          lapse upon the attainment of performance goals related to one or more
          of the Performance Criteria; and

               (2) any Performance Award that becomes payable upon the
          attainment of performance goals which are related to one or more of
          the Performance Criteria.

          (c) To the extent necessary to comply with the performance-based
     compensation requirements of Section 162(m)(4)(C) of the Code, with respect
     to any Award of Restricted Stock or any Performance Award granted to
     Section 162(m) Participants that is intended to qualify as
     performance-based compensation, no later than 90 days following the
     commencement of the fiscal year in question or any other designated fiscal
     period or period of service (or such other time as may be required or
     permitted by Section 162(m) of the Code), the Administrator will, in
     writing:

               (1) select the Performance Criteria applicable to the fiscal year
          or other designated fiscal period or period of service;

               (2) establish the various performance targets, in terms of an
          objective formula or standard, and amounts of the Awards, as
          applicable, that may be earned for the fiscal year or other designated
          fiscal period or period of service; and

               (3) specify the relationship among the Performance Criteria, the
          performance targets, and the amounts of the Awards, as applicable, to
          be earned by each Section 162(m) Participant for that fiscal year or
          other designated fiscal period or period of service.

     Following the completion of each fiscal year or other designated fiscal
     period or period of service, the Administrator will certify in writing
     whether the applicable performance targets have been achieved for the
     fiscal year or other designated fiscal period or period of service. In
     determining the amount earned by a Section 162(m) Participant, the
     Administrator will have the right to reduce (but not to increase) the
     amount payable at a given level of performance to take into account
     additional factors that the Administrator may deem relevant to the
     assessment of individual or corporate performance for the fiscal year or
     other designated fiscal period or period of service.

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          (d) Furthermore, notwithstanding any other provision of this Plan or
     any Award Agreement, any Award granted to a Section 162(m) Participant that
     is intended to qualify as performance-based compensation as described in
     Section 162(m)(4)(C) of the Code will be subject to any additional
     limitations set forth in Section 162(m) of the Code (including any
     amendment to Section 162(m) of the Code) or any regulations or rulings
     issued under Section 162(m) of the Code that are requirements for
     qualification as performance-based compensation as described in Section
     162(m)(4)(C) of the Code, and this Plan will be deemed amended to the
     extent necessary to conform to those requirements.

     3.3 Limitations Applicable to Section 16 Persons. Notwithstanding any other
provision of this Plan, this Plan, and any Award granted or awarded to any
individual who is then subject to Section 16 of the Exchange Act, will be
subject to any additional limitations set forth in Rule 16b-3 that are
requirements for the application of the exemption provided by Rule 16b-3. To the
extent permitted by applicable law, this Plan and Awards granted or awarded
under this Plan will be deemed amended to the extent necessary to conform to
Rule 16b-3.

     3.4 Consideration. In consideration of the granting of an Award under this
Plan, the Holder must agree, in the Award Agreement, to remain in the employ of
the Company or any Subsidiary for a period of at least one year (or such shorter
period as may be fixed in the Award Agreement or by action of the Administrator
following grant of the Award) after the Award is granted.

     3.5 At-Will Employment. Nothing in this Plan or in any Award Agreement will
confer on any Holder any right to continue in the employ of the Company or any
Subsidiary or interfere with or restrict in any way the right of the Company or
any Subsidiary, all of which the Company expressly reserves, to discharge any
Holder at any time for any reason whatsoever, with or without cause, except to
the extent expressly provided otherwise in an Employment Contract.

     3.6 Prohibition on Repricing. The Administrator may not, without prior
approval by the Company's shareholders, reprice, replace, or re-grant through
cancellation or lowering of the exercise price any Options issued under this
Plan. Notwithstanding shareholder approval, to the extent that the Company
reasonably determines that any repriced, replaced, or re-granted Option may
constitute a deferral of compensation under Section 409A of the Code, the Option
must be accompanied by a written agreement setting forth the terms and
conditions required to comply with the provisions of Section 409A of the Code.

4.   OPTION GRANTS

     4.1 Eligibility. Any Senior Management Employee selected by the
Administrator is eligible for the grant of an Option to purchase a number of
shares of Class A Stock determined by the Administrator, subject to the Award
Limit.

     4.2 Granting of Options.

          (a) The Administrator will from time to time, in its absolute
     discretion, and subject to applicable limitations of this Plan:

               (1) determine which Senior Management Employees (including but
          not limited to Employees who have previously received Awards under
          this Plan) are to be granted Options; and

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               (2) subject to the Award Limit, determine the number of shares to
          be subject to the Options.

          (b) Upon the selection of an Employee to be granted an Option, the
     Administrator will instruct the Secretary of the Company to issue the
     Option. The Administrator may impose such conditions on the grant of the
     Option as it deems appropriate.

     4.3 Options in Lieu of Cash Compensation. Options may be granted under this
Plan to Employees in lieu of cash bonuses that would otherwise be payable to
them, pursuant to policies adopted by the Administrator from time to time.

5.   OPTION TERMS

     5.1 Exercise Price. The exercise price per share for each Option will be
set by the Administrator. The exercise price may not be less than 100% of the
Fair Market Value of a share of Class A Stock on the date the Option is granted.

     5.2 Option Term. The term of each Option will be set by the Administrator
but may not exceed ten years from the date the Option is granted.

     5.3 Option Vesting. Each Option will vest and become exercisable as
determined by the Administrator and set forth in the Award Agreement evidencing
the Option. No portion of an Option that is unexercisable at Termination of
Employment will become exercisable, except as may be otherwise provided by the
express terms of an Employment Contract.

6.   EXERCISE OF OPTIONS

     6.1 Partial Exercise. An exercisable Option may be exercised in whole or in
part. However, an Option may not be exercised with respect to fractional shares,
and the Administrator may, by the terms of the Option, require that a partial
exercise be with respect to a minimum number of shares.

     6.2 Manner of Exercise. All or a portion of an exercisable Option will be
deemed exercised upon delivery of all of the following to the Secretary of the
Company or his or her office:

          (a) a written notice complying with the applicable rules established
     by the Administrator stating that the Option or portion of the Option is
     exercised, signed by the Holder or other person then entitled to exercise
     the Option or portion of the Option;

          (b) such representations and documents as the Administrator, in its
     absolute discretion, deems necessary or advisable to effect compliance with
     all applicable provisions of the Securities Act and any other applicable
     federal or state securities laws or regulations;

          (c) if the Option is being exercised under Section 10.1 by any person
     or persons other than the Holder, appropriate proof of the right of such
     person or persons to exercise the Option; and

          (d) full cash payment for the shares with respect to which the Option
     or portion of the Option is exercised, except that the Administrator may,
     in its discretion:

               (1) allow payment, in whole or in part, through delivery of
          shares of Class A Stock which have been owned by the Holder for at
          least

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          six months, duly endorsed for transfer to the Company, with a Fair
          Market Value on the date of delivery equal to the aggregate exercise
          price;

               (2) allow payment, in whole or in part, through surrender of
          shares of Class A Stock then issuable upon exercise of the Option
          having a Fair Market Value on the date of Option exercise equal to the
          aggregate exercise price;

               (3) allow payment, in whole or in part, through delivery of a
          notice that the Holder has placed a market sell order with a broker
          with respect to shares of Class A Stock issuable upon exercise of the
          Option and has irrevocably instructed the broker to pay a sufficient
          portion of the net proceeds of the sale to the Company to satisfy the
          exercise price;

               (4) allow payment through any combination of the methods allowed
          by subsections (1), (2), and (3) of this Section 6.2(d).

The Administrator may, in its absolute discretion, take whatever actions it
deems appropriate to effect compliance with the Securities Act and any other
applicable federal or state securities laws or regulations including, without
limitation, placing legends on share certificates and issuing stop-transfer
notices to transfer agents and registrars.

     6.3 Conditions to Issuance of Shares. The Company will not be required to
issue any shares of stock purchased upon the exercise of any Option or deliver
any related stock certificates before fulfillment of all of the following
conditions:

          (a) admission of the shares to listing on all stock exchanges on which
     that class of stock is then listed;

          (b) completion of any registration or other qualification of the
     shares under any state or federal law, or under the rulings or regulations
     of the Securities and Exchange Commission or any other governmental
     regulatory body that the Administrator, in its absolute discretion, deems
     necessary or advisable;

          (c) obtaining any approval or other clearance from any state or
     federal governmental agency that the Administrator, in its absolute
     discretion, determines to be necessary or advisable;

          (d) lapse of such reasonable period of time following exercise of the
     Option as the Administrator may establish from time to time for reasons of
     administrative convenience; and

          (e) receipt by the Company of full payment for the shares in good and
     collected funds, including payment of any applicable withholding tax, which
     in the discretion of the Administrator may be in the form of consideration
     used by the Holder to pay for the shares under Section 6.2(d).

The Company may enter into a contract with an independent administrative
services provider to perform recordkeeping, custodial, and other administrative
services with respect to this Plan and shares issued under this Plan. Additional
or different conditions than those enumerated in subsections (a) through (e)
above may be imposed as a result of that contract, and any such conditions are
incorporated by reference in this Plan.

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     6.4 Rights as Shareholders. Holders will not be, nor have any of the rights
or privileges of, shareholders of the Company in respect of any shares
purchasable upon the exercise of any part of an Option unless and until those
shares have been issued by the Company.

     6.5 Ownership and Transfer Restrictions. The Administrator, in its absolute
discretion, may impose such restrictions on the ownership and transferability of
the shares purchasable upon the exercise of an Option as it deems appropriate.
Any such restriction will be set forth in the respective Award Agreement and may
be referred to on the certificates evidencing the shares.

     6.6 Additional Limitations on Exercise of Options. Holders may be required
to comply with any timing or other restrictions with respect to the exercise of
Options, including a window-period limitation, as may be imposed in the
discretion of the Administrator.

7.   RESTRICTED STOCK

     7.1 Eligibility. Any Senior Management Employee selected by the
Administrator is eligible for grant of a number of shares of Restricted Stock
determined by the Administrator, subject to the Award Limit.

     7.2 Award of Restricted Stock.

          (a) The Administrator may from time to time, in its absolute
     discretion:

               (1) determine which Senior Management Employees (including but
          not limited to Employees who have previously received Awards under
          this Plan) will be granted Restricted Stock; and

               (2) determine the terms and conditions applicable to the
          Restricted Stock, consistent with this Plan and consistent with the
          grant being covered by Section 83 of the Code and thus exempt from
          Section 409A of the Code.

          (b) Rights to Restricted Stock will vest on the third anniversary of
     the Restricted Stock Award date. Rights that do not vest will be forfeited.

          (c) Upon the selection of a Senior Management Employee to be awarded
     Restricted Stock, the Administrator will instruct the Secretary of the
     Company to issue the Restricted Stock and may impose such conditions on the
     issuance of such Restricted Stock as it deems appropriate.

     7.3 Rights as Shareholders. Subject to Section 7.4, upon delivery of the
shares of Restricted Stock to the escrow holder under Section 7.5, the Holder
will have, unless otherwise provided by the Administrator, all the rights of a
shareholder with respect to those shares, subject to the restrictions in his or
her Award Agreement, including the right to vote and receive all dividends and
other distributions paid or made with respect to the shares, except that, in the
discretion of the Administrator, any extraordinary distributions with respect to
the Class A Stock may be subjected to the restrictions set forth in Section 7.4.

     7.4 Restrictions. All shares of Restricted Stock issued under this Plan
(including any shares received as a result of stock dividends, stock splits, or
any other form of recapitalization) will, under the terms of each individual
Award Agreement, be subject to such restrictions as the Administrator provides,
which restrictions may include, without limitation, restrictions concerning
voting rights and transferability and restrictions based on duration of
employment with the

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Company, Company performance and individual performance. Except with respect to
shares of Restricted Stock granted to Section 162(m) Participants and intended
to be performance-based compensation under Section 162(m) of the Code, by action
taken after the Restricted Stock is issued, the Administrator may, on such terms
and conditions as it may determine to be appropriate, remove any or all of the
restrictions imposed by the terms of the Award Agreement. Restricted Stock may
not be sold or encumbered until all restrictions are terminated or expire. A
Holder's rights in unvested Restricted Stock will lapse, and the Restricted
Stock will be surrendered to the Company without consideration, upon the
Holder's Termination of Employment with the Company unless otherwise expressly
provided in an Employment Contract, in which event the terms of the Employment
Contract will be given effect.

     7.5 Escrow. The Secretary of the Company or such other escrow holder as the
Administrator appoints will retain physical custody of each certificate
representing Restricted Stock and will credit the stock to a separate restricted
account until all of the restrictions imposed under the Award Agreement with
respect to the shares expire or are removed. The Company may enter into a
contract with an independent administrative services provider to perform
recordkeeping, custodial, and other administrative services with respect to this
Plan and Restricted Stock issued under this Plan. Terms and conditions in
addition to those enumerated in the Award Agreement may be imposed as a result
of that contract, and any such conditions are incorporated by reference in this
Plan and in any such Award Agreement.

     7.6 Legend. In order to enforce the restrictions imposed upon shares of
Restricted Stock under this Plan, the Administrator will cause a legend or
legends to be placed on certificates representing shares of Restricted Stock, or
will appropriately mark any account to which shares of Restricted Stock are
credited, making appropriate reference to the conditions imposed by this Plan.

     7.7 Section 83(b) Election. If a Holder makes an election under Section
83(b) of the Code, or any successor section, to be taxed with respect to the
Restricted Stock as of the date of award of the Restricted Stock rather than as
of the date or dates upon which the Holder would otherwise be taxable under
Section 83(a) of the Code, the Holder must deliver a copy of the election to the
Company immediately after filing it with the Internal Revenue Service, together
with any tax withholding required by the Company under Section 10.5.

8.   PERFORMANCE AWARDS

     8.1 Eligibility. Any Senior Management Employee selected by the
Administrator is eligible for grant of a Performance Award determined by the
Administrator, subject to the Award Limit.

     8.2 Performance Awards.

          (a) Any Senior Management Employee selected by the Administrator may
     be granted one or more Performance Awards. The number of shares of Class A
     Stock issuable under a Performance Award may be linked to any one or more
     of the Performance Criteria or other specific performance criteria
     determined appropriate by the Administrator, in each case on a specified
     date or dates or over any period or periods determined by the
     Administrator. In making such determinations, the Administrator will
     consider (among such other factors as it deems relevant in light of the
     specific type of award) the contributions, responsibilities, and other
     compensation of the particular Employee.

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          (b) Not later than 90 days after commencement of each fiscal year or
     performance period with respect to which Performance Awards may be made,
     the Administrator will establish targeted group allocations and targeted
     financial results, and may establish targeted individual allocations, for
     that year or period. Actual Performance Awards for that fiscal year or
     period will be based on the attainment of specified types and combinations
     of performance measurement criteria, which may differ as to various
     Employees or classes of Employees, and from time to time. The criteria may
     include, without limitation:

               (1) any of the Performance Criteria;

               (2) attainment of certain performance levels by, and measured
          against objectives of, the Company, the individual Employee, and/or a
          group of Employees;

               (3) increases in operating efficiency;

               (4) completion of specified strategic actions;

               (5) the recommendation of the Chief Executive Officer; and

               (6) such other factors as the Administrator deems important in
          connection with accomplishing the purposes of this Plan.

     No Employee or group of Employees may receive an actual Performance Award
     greater than the applicable targeted individual allocation (if any) or
     group allocation for a given year, unless due to extraordinary
     circumstances the Administrator deems it appropriate, in its sole
     discretion, to make allocations to one or more Employees or groups of
     Employees in excess of his or their targeted awards.

          (c) The maximum amount of any Performance Award granted to an Employee
     during any fiscal year of the Company may not exceed the Award Limit.

          (d) Unless otherwise specified by the Administrator at the time of
     grant, the Performance Criteria applicable to a Section 162(m) Participant
     will be determined on the basis of generally accepted accounting
     principles.

     8.3 Disposition Upon Termination of Employment. A Performance Award is
payable only while the Holder is an Employee unless:

          (a) otherwise expressly provided in an Employment Contract, in which
     event the terms of the Employment Contract will be given effect; or

          (b) the Administrator in its sole and absolute discretion provides for
     payment of a Performance Award, in whole or in part, following a
     Termination of Employment without good cause, or following a Change in
     Control of the Company, or because of the Holder's Retirement, death, or
     Permanent Disability, or otherwise.

9.   ADMINISTRATION

     9.1 Committee. The Board may from time to time appoint a committee or
subcommittee of the Board other than the Governance, Nominating, and
Compensation Committee to constitute the Committee under this Plan. The
Committee must consist solely of two

<PAGE>

or more directors, each of whom is both a "non-employee director" as defined by
Rule 16b-3 and an "outside director" for purposes of Section 162(m) of the Code.

     9.2 Duties and Powers of the Administrator. It is the Administrator's duty
to conduct the general administration of this Plan in accordance with its
provisions. The Administrator has the power to interpret this Plan and the Award
Agreements and to adopt such rules for the administration, interpretation, and
application of this Plan and Award Agreements as are consistent with this Plan,
to interpret, amend, or revoke any such rules, and to amend any Award Agreement
if the amendment will not adversely affect the rights or obligations of the
Holder of the Award. Any or award under this Plan need not be the same with
respect to each Holder.

     9.3 Administrator's Authority with Respect to Termination of Employment.
The Administrator is authorized, in its absolute discretion, to determine the
effect of all matters and questions relating to Termination of Employment,
including but not the limited to the question of whether a Termination of
Employment results from a discharge for good cause and all questions of whether
a particular leave of absence constitutes a Termination of Employment, except
that:

          (a) where the effect of a matter or question relating to Termination
     of Employment is specified in an Employment Contract, the effect will be as
     specified in the Employment Contract;

          (b) where "good cause" is defined in an Employment Contract, the
     definition in the Employment Contract will control; and

          (c) where "good cause" is not defined in an Employment Contract:

               (1) the following reasons are conclusively presumed to constitute
          "good cause":

                    (A) an Employee's conviction of a felony; or

                    (B) an Employee's--

                         (1) willful and continued failure to perform the
                    material duties of his position,

                         (2) willful and serious fraud against the Company or
                    any Subsidiary, or

                         (3) material breach of any provision of any agreement
                    with the Company which has had (or is expected to have) a
                    material adverse effect on the business of the Company or
                    any Subsidiary; and

               (2) "good cause" does not include any one or more of the
          following:

                    (A) bad judgment,

                    (B) ordinary negligence, or

                    (C) any act or omission that an Employee believed in good
               faith to have been in (or not opposed to) the best interests of
               the Company and from which the Employee did not intend to gain,
               directly or indirectly, a profit to which he was not legally
               entitled.

<PAGE>

     9.4 Professional Assistance; Good Faith Actions. All expenses and
liabilities which the Administrator incurs in connection with the administration
of this Plan will be borne by the Company. The Administrator may employ
attorneys, consultants, accountants, appraisers, brokers, or other persons. The
Administrator, the Company, and the Company's officers and directors will be
entitled to rely on the advice, opinions, or valuations of any such persons. All
actions taken and all interpretations and determinations made by the
Administrator or the Board in good faith will be final and binding on all
Holders, the Company, and all other interested persons. No members of the
Administrator or Board will be personally liable for any action, determination,
or interpretation made in good faith with respect to this Plan or Awards, and
all members of the Administrator and the Board will be fully protected by the
Company in respect of any such action, determination, or interpretation.

     9.5 Delegation of Authority to Grant Awards. The Committee may, but need
not, delegate from time to time some or all of its authority to grant Awards
under this Plan and administer this Plan to a subcommittee consisting of one or
more members of the Committee or of one or more officers of the Company, except
that the Committee may not delegate its authority to grant Awards to
individuals:

          (a) who are subject on the date of the grant to the reporting rules
     under Section 16(a) of the Exchange Act;

          (b) who are Section 162(m) Participants; or

          (c) who are officers of the Company who are delegated authority by the
     Committee under this Section 9.5.

Any delegation under this Section 9.5 will be subject to the restrictions and
limits that the Committee specifies at the time of the delegation and may be
rescinded at any time by the Committee. Any subcommittee appointed under this
Section 9.5 will serve in that capacity at the pleasure of the Committee.

10.  MISCELLANEOUS PROVISIONS

     10.1 Transferability of Awards.

          (a) Except as provided in Section 10.1(b):

               (1) No Award under this Plan may be sold, pledged, assigned, or
          transferred in any manner other than by will or the laws of descent
          and distribution or, subject to the consent of the Administrator,
          pursuant to a DRO, unless and until the Award has been exercised, or
          the shares underlying the Award have been issued, and all restrictions
          applicable to the shares have lapsed.

               (2) No Award or interest or right in an Award will be liable for
          the debts, contracts, or engagements of the Holder or his or her
          successors in interest or will be subject to disposition by transfer,
          alienation, anticipation, pledge, encumbrance, assignment, or any
          other means, regardless of whether such purported disposition is
          voluntary or involuntary or by operation of law, judgment, levy,
          attachment, garnishment, or any other legal or equitable proceedings
          (including bankruptcy), and any attempted disposition of an Award will
          be null and void and of no effect.

<PAGE>

               (3) During the lifetime of the Holder, only he or she may
          exercise an Option (or any portion of an Option) granted to him or her
          under this Plan unless it has been disposed of with the consent of the
          Administrator pursuant to a DRO. After the death of the Holder and
          before to the time when the Option becomes unexercisable under the
          terms of this Plan or the applicable Award Agreement, any exercisable
          portion of an Option may be exercised by the deceased Holder's
          personal representative or by any person empowered to do so under the
          deceased Holder's will or under the then applicable laws of descent
          and distribution.

          (b) Notwithstanding Section 10.1(b), the Administrator, in its sole
     discretion, may determine to permit a Holder to transfer an Option to any
     one or more Permitted Transferees (as defined below), subject to the
     following terms and conditions:

               (1) an Option transferred to a Permitted Transferee will not be
          assignable or transferable by the Permitted Transferee other than by
          will or the laws of descent and distribution;

               (2) an Option transferred to a Permitted Transferee will continue
          to be subject to all the terms and conditions that were applicable to
          the original Holder (other than the ability to further transfer the
          Option); and

               (3) the Holder and the Permitted Transferee must execute any and
          all documents requested by the Administrator including, without
          limitation, documents to--

                    (A) confirm the status of the transferee as a Permitted
               Transferee,

                    (B) satisfy any requirements for an exemption for the
               transfer under applicable federal and state securities laws, and

                    (C) evidence the transfer.

     For purposes of this Section 10.1(b), "Permitted Transferee" means, with
     respect to a Holder, any child, stepchild, grandchild, parent, stepparent,
     grandparent, spouse, former spouse, sibling, niece, nephew, mother-in-law,
     father-in-law, son-in-law, daughter-in-law, brother-in-law, or
     sister-in-law, including adoptive relationships, any person sharing the
     Holder's household (other than a tenant or employee), a trust in which
     these persons (or the Holder) control the management of assets, and any
     other entity in which these persons (or the Holder) own more than 50% of
     the voting interests, or any other transferee specifically approved by the
     Administrator after taking into account any state or federal tax or
     securities laws applicable to transferable Options.

     10.2 Amendment, Suspension, or Termination of this Plan.

          (a) This Plan may be wholly or partially amended or otherwise
     modified, suspended, or terminated at any time or from time to time by the
     Administrator, except that:

               (1) no amendment is permitted to the extent that the individual
          Award or this Plan, in general, would constitute deferred compensation

<PAGE>

          subject to Section 409A of the Code unless the Award Agreement sets
          forth the terms and conditions necessary to comply with the
          requirements of Section 409A of the Code;

               (2) without approval of the Company's shareholders given within
          twelve months before or after the action by the Administrator, no
          action of the Administrator may, except as provided in Section 10.3,
          increase the limits imposed in Section 2.1 on the maximum number of
          shares that may be issued under this Plan; and

               (3) no amendment, suspension, or termination of this Plan may,
          without the consent of the Holder, alter or impair any rights or
          obligations under any Award granted or awarded before the date of the
          amendment, suspension, or termination, unless the Award itself
          otherwise expressly so provides.

          (b) No Awards may be granted or awarded during any period of
     suspension or after termination of this Plan.

          (c) No awards may be granted or awarded after the tenth anniversary of
     the Effective Date.

     10.3 Changes in Class A Stock or Assets of the Company, Acquisition or
Liquidation of the Company and Other Corporate Events.

          (a) Subject to Section 10.3(e), in the event that the Administrator
     determines that any dividend or other distribution (whether in the form of
     cash, Class A Stock, other securities, or other property),
     recapitalization, reclassification, stock split, reverse stock split,
     reorganization, merger, consolidation, share exchange, split-up, spin-off,
     combination, repurchase, liquidation, dissolution, or sale, transfer,
     exchange, or other disposition of all or substantially all of the assets of
     the Company, or exchange of Class A Stock or other securities of the
     Company, issuance of warrants, or other rights to purchase Class A Stock or
     other securities of the Company, or other similar corporate transaction or
     event, in the Administrator's sole discretion, affects the Class A Stock
     such that an adjustment is determined by the Administrator to be
     appropriate in order to prevent dilution or enlargement of the benefits or
     potential benefits intended to be made available under this Plan or with
     respect to an Award, then the Administrator will, in such manner as it may
     deem equitable, adjust any or all of:

               (1) the number and kind of shares of stock (or other securities
          or property) with respect to which Awards may be granted or awarded
          (including, but not limited to, adjustments of the limitations in
          Section 2.1 on the maximum number and kind of shares that may be
          issued and adjustments of the Award Limit);

               (2) the number and kind of shares of stock (or other securities
          or property) subject to outstanding Awards; and

               (3) the grant or exercise price with respect to any Award.

          (b) Subject to Sections 10.3(c) and 10.3(e), in the event of any
     transaction or event described in Section 10.3(a), any Change in Control,
     any Corporate Transaction, or

<PAGE>

     any unusual or nonrecurring transactions or events affecting the Company,
     any affiliate of the Company, or the financial statements of the Company or
     any affiliate, or of changes in applicable laws, regulations, or accounting
     principles, the Administrator, in its sole and absolute discretion, and on
     such terms and conditions as it deems appropriate, either by the terms of
     the Award or by action taken before the occurrence of the transaction or
     event, is authorized to take any one or more of the following actions
     whenever the Administrator determines that the action is appropriate in
     order to prevent dilution or enlargement of the benefits or potential
     benefits intended to be made available under this Plan or with respect to
     any Award under this Plan, to facilitate the transactions or events in
     question, or to give effect to changes in laws, regulations, or accounting
     principles (but only to the extent the action does not result in a deferral
     of compensation under Section 409A of the Code or, to the extent that the
     Company reasonably determines that any the action may constitute a deferral
     of compensation under Section 409A of the Code, pursuant to an agreement
     setting forth the terms and conditions required to comply with the
     provisions of Section 409A of the Code):

               (1) provide for either the purchase of the Award for an amount of
          cash equal to the amount that could have been attained upon the
          exercise of the Award or realization of the Holder's rights had the
          Award been currently exercisable or payable or fully vested or the
          replacement of the Award with other rights or property selected by the
          Administrator in its sole discretion;

               (2) provide that the Award cannot vest, be exercised, or become
          payable after the event in question;

               (3) provide that the Award will be exercisable as to all shares
          it covers, notwithstanding anything to the contrary in Section 5.3 or
          the provisions of the Award Agreement;

               (4) provide for the Award to be assumed by the successor or
          survivor corporation, or its parent or subsidiary, or for it to be
          substituted for by similar options, rights, or awards covering the
          stock of the successor or survivor corporation, or its parent or
          subsidiary, with appropriate adjustments as to the number and kind of
          shares and prices;

               (5) make adjustments in the number and type of shares of stock
          (or other securities or property) subject to outstanding Awards, and
          in the number and kind of shares of outstanding Restricted Stock,
          and/or in the terms and conditions (including the grant or exercise
          price), and the criteria included in, outstanding options, rights, and
          awards and options, rights, and awards that may be granted in the
          future; and

               (6) provide that, for a specified period of time before the event
          in question, the restrictions imposed under an Award Agreement upon
          some or all shares of Restricted Stock may be terminated, and some or
          all of those shares of Restricted Stock may cease to be subject to
          forfeiture under Section 7.4 after the event.

<PAGE>

          (c) Notwithstanding any other provision of this Plan, in the event of
     a Corporate Transaction, each outstanding Option will be assumed or an
     equivalent option substituted by the successor corporation or a parent or
     subsidiary of the successor corporation. In the event that the successor
     corporation refuses to assume or substitute for the Option, the Holder will
     have the right to exercise the Option as to all of the optioned shares,
     including shares as to which it would not otherwise be exercisable. If an
     Option is exercisable in lieu of assumption or substitution in the event of
     a merger, consolidation, share exchange, or sale of assets, the
     Administrator will notify the Holder that the Option will be fully
     exercisable for a period of 15 days from the date of the notice, and the
     Option will then terminate upon the expiration of that period to the extent
     it has not been exercised. For the purposes of this Section 10.3(c), the
     Option will be considered assumed if, following the merger, consolidation,
     share exchange, or sale of assets, the option confers the right to purchase
     or receive, for each share of optioned stock subject to the Option
     immediately before the merger, consolidation, share exchange, or sale of
     assets, the consideration (whether stock, cash, or other securities or
     property) received in the merger, consolidation, share exchange, or sale of
     assets by holders of Class A Stock for each share held on the effective
     date of the transaction (and if holders were offered a choice of
     consideration, the type of consideration chosen by the holders of a
     majority of the outstanding shares); provided, however, that if the
     consideration received in the merger, consolidation, share exchange, or
     sale of assets was not solely common stock of the successor corporation or
     its parent, the Administrator may, with the consent of the successor
     corporation, provide for the consideration to be received upon the exercise
     of the Option, for each share of optioned stock subject to the Option, to
     be solely common stock of the successor corporation or its parent equal in
     fair market value to the per share consideration received by holders of
     Class A Stock in the merger, consolidation, share exchange, or sale of
     assets.

          (d) Subject to Sections 10.3(e), 3.2, and 3.3, the Administrator may,
     in its discretion, include such further provisions and limitations in any
     Award, agreement, or certificate, as it may deem equitable and in the best
     interests of the Company.

          (e) With respect to Awards which are granted to Section 162(m)
     Participants and are intended to qualify as performance-based compensation
     under Section 162(m)(4)(C), no adjustment or action described in this
     Section 10.3 or in any other provision of this Plan is authorized to the
     extent that the adjustment or action would cause the Award to fail to so
     qualify under Section 162(m)(4)(C), or any successor provisions.
     Furthermore, no such adjustment or action will be authorized to the extent
     the adjustment or action would result in short-swing profits liability
     under Section 16 of the Exchange Act or violate the exemptive conditions of
     Rule 16b-3 unless the Administrator determines that the Award is not to
     comply with such exemptive conditions. The number of shares of Class A
     Stock or other stock subject to any Award will always be rounded up to the
     next whole number.

          (f) The existence of this Plan and the Awards granted under this Plan
     will not affect or restrict in any way the right or power of the Company or
     the shareholders of the Company to make or authorize any adjustment,
     recapitalization, reorganization, or other change in the Company's capital
     structure or its business, any merger, consolidation, or share exchange of
     the Company, any issue of stock or of options, warrants, or rights to

<PAGE>

     purchase stock or of bonds, debentures, preferred or prior preference
     stocks whose rights are superior to or affect the Class A Stock or the
     rights thereof or which are convertible into or exchangeable for Class A
     Stock, or the dissolution or liquidation of the Company, or any sale or
     transfer of all or any part of its assets or business, or any other
     corporate act or proceeding, whether of a similar character or otherwise.

     10.4 Approval of Plan by Shareholders. This Plan will be submitted for the
approval of the Company's shareholders within twelve months after the date of
the Board's initial adoption of this Plan. Awards may be granted or awarded
before shareholder approval, but those Awards will not be exercisable or
payable, nor will they vest, before the time when this Plan is approved by the
shareholders. If shareholder approval has not been obtained at the end of the
twelve-month period, all Awards previously granted or awarded under this Plan
will automatically be canceled and become null and void. In addition, if the
Board determines that Awards that may be granted to Section 162(m) Participants
should continue to be eligible to qualify as performance-based compensation
under Section 162(m)(4)(C) of the Code, the Performance Criteria must be
disclosed to and approved by the Company's shareholders no later than the first
shareholder meeting that occurs in the fifth year following the year in which
the Company's shareholders previously approved the Performance Criteria.

     10.5 Tax Withholding. The Company will be entitled to require payment in
cash or deduction from other compensation payable to each Holder of any sums
required by federal, state, or local tax law to be withheld with respect to the
issuance, vesting, exercise, or payment of any Award or in consequence of a
Holder's making a Section 83(b) election as describe in Section 7.7. The
Administrator may in its discretion and in satisfaction of the this requirement
to allow the Holder to elect to have the Company withhold shares of Class A
Stock otherwise issuable under the Award (or allow the return of shares of Class
A Stock) having a Fair Market Value equal to the sums required to be withheld.
Notwithstanding any other provision of this Plan, the number of shares of Class
A Stock that may be withheld with respect to the issuance, vesting, exercise, or
payment of any Award (or that may be repurchased from the Holder of the Award
within six months after the shares were acquired by the Holder from the Company)
in order to satisfy the Holder's income and payroll tax liabilities with respect
to the issuance, vesting, exercise, or payment of the Award is limited to the
number of shares that have a Fair Market Value on the date of withholding or
repurchase equal to the aggregate amount of those liabilities based on the
minimum statutory withholding rates for tax purposes that are applicable to that
supplemental taxable income.

     10.6 Forfeiture Provisions. Pursuant to its general authority to determine
the terms and conditions applicable to Awards under this Plan, the Administrator
will have the right to provide, in the terms of Awards made under this Plan, or
to require a Holder to agree by separate written instrument, that:

          (a) any proceeds, gains, or other economic benefit actually or
     constructively received by the Holder upon any receipt or exercise of the
     Award, or upon the receipt or resale of any Class A Stock underlying the
     Award, must be paid to the Company; and

          (b) the Award will terminate and any unexercised portion of the Award
     (whether or not vested) will be forfeited;

     if

<PAGE>
          (1) a Termination of Employment occurs before a specified date, or
     within a specified time period following receipt or exercise of the Award,

          (2) the Holder at any time, or during a specified time period, engages
     in any activity in competition with the Company, or that is inimical,
     contrary, or harmful to the interests of the Company, as further defined by
     the Administrator, or

          (3) the Holder incurs a Termination of Employment for cause.

     10.7 Right of Recapture. If at any time within one year after the date on
which an Employee exercises an Option, or on which Restricted Stock vests or on
which Class A Stock is issued to an Employee pursuant to a Performance Award
(each a "realization event"), the Administrator should determine in its
discretion that the Company has been materially harmed by the Employee, whether
the harm (a) results in the Employee's termination or deemed termination of
employment for cause or (b) results from any activity of the Employee determined
by the Committee to be in competition with any activity of the Company, or
otherwise inimical, contrary, or harmful to the interests of the Company
(including, but not limited to, accepting employment with or serving as a
consultant, adviser, or in any other capacity to an entity that is in
competition with or acting against the interests of the Company), then any gain
realized by the Employee from the realization event must be paid by the Employee
to the Company upon notice from the Company. The gain will be determined as of
the date of the realization event, without regard to any later change in the
Fair Market Value of a share of Class A Stock. The Company will have the right,
to the maximum extent permitted by law, to set the gain off against any amounts
otherwise owed to the Employee by the Company or any Subsidiary (whether as
wages, vacation pay, or pursuant to any benefit plan or other compensatory
arrangement).

     10.8 Compliance with Laws. This Plan, the granting and vesting of Awards
under this Plan, and the issuance and delivery of shares of Class A Stock and
the payment of money under this Plan or under Awards are subject to compliance
with all applicable federal and state laws, rules, and regulations (including
but not limited to state and federal securities law and federal margin
requirements) and to such approvals by any listing, regulatory, or governmental
authority as may, in the opinion of counsel for the Company, be necessary or
advisable. Any securities delivered under this Plan will be subject to such
restrictions, and the person acquiring the securities must, if requested by the
Company, provide such assurances and representations to the Company as the
Company may deem necessary or desirable to assure compliance with all applicable
legal requirements. To the extent permitted by applicable law, this Plan and
Awards granted or awarded hereunder will be deemed amended to the extent
necessary to conform to applicable laws, rules, and regulations.

     10.9 Headings. Headings are included in this Plan for convenience only and
are not to serve as a basis for interpretation or construction of this Plan.

     10.10 Severability of Provisions. If any provision of this Plan is held to
be invalid or unenforceable, the other provisions of this Plan are not to be
affected but are to be applied as if the invalid or unenforceable provision had
not been included in this Plan.

     10.11 Governing Law. This Plan and any agreements this Plan will be
administered, interpreted, and enforced under the internal laws of the State of
Michigan without regard to its law of conflicts of laws.

<PAGE>

     This Plan was duly adopted by the Board of Directors of Tecumseh Products
Company on July 31, 2007.

     Executed on July 31, 2007.

                                        TECUMSEH PRODUCTS COMPANY

                                        By: /s/ James S. Nicholson
                                            ----------------------------------
                                            James S. Nicholson
                                            Vice President, Treasurer and Chief
                                            Financial Officerexv4w1

 

EXHIBIT 4.1

EXECUTION COPY

 

 

GLOBAL INDUSTRIES, LTD.

2.75% Senior Convertible Debentures due 2027

INDENTURE

Dated as of July 27, 2007

WELLS FARGO BANK, NATIONAL ASSOCIATION,

Trustee

 

 

 

 

TABLE OF CONTENTS

	 	 	 	 	 	 	 
	 	 	 	 	Page	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 1	 	 	 	 
	 
	 	Definitions and Incorporation by Reference	 	 	 	 
	 
	 	 	 	 	 	 
	Section 1.01.
	 	Definitions	 	 	1	 
	Section 1.02.
	 	Incorporation by Reference of Trust Indenture Act	 	 	9	 
	Section 1.03.
	 	Rules of Construction	 	 	10	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 2	 	 	 	 
	 
	 	The Debentures	 	 	 	 
	 
	 	 	 	 	 	 
	Section 2.01.
	 	Designation, Amount and Issuance of Debentures	 	 	10	 
	Section 2.02.
	 	Form of the Debentures	 	 	11	 
	Section 2.03.
	 	Date and Denomination of Debentures; Payment at Maturity; Payment of Interest	 	 	12	 
	Section 2.04.
	 	Execution and Authentication	 	 	13	 
	Section 2.05.
	 	Registrar, Paying Agent and Conversion Agent	 	 	13	 
	Section 2.06.
	 	Paying Agent to Hold Money in Trust	 	 	14	 
	Section 2.07.
	 	Debentureholder Lists	 	 	14	 
	Section 2.08.
	 	Exchange and Registration of Transfer of Debentures; Restrictions on Transfer	 	 	15	 
	Section 2.09.
	 	Replacement Debentures	 	 	20	 
	Section 2.10.
	 	Outstanding Debentures	 	 	20	 
	Section 2.11.
	 	Temporary Debentures	 	 	21	 
	Section 2.12.
	 	Cancellation	 	 	21	 
	Section 2.13.
	 	CUSIP and ISIN Numbers	 	 	22	 
	Section 2.14.
	 	Additional Debentures	 	 	22	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 3	 	 	 	 
	 
	 	Redemption and Repurchase of Debentures	 	 	 	 
	 
	 	 	 	 	 	 
	Section 3.01.
	 	Optional Redemption of Debentures	 	 	23	 
	Section 3.02.
	 	Notice of Optional Redemption; Selection of Debentures to be Redeemed	 	 	23	 
	Section 3.03.
	 	Payment of Debentures Called for Redemption	 	 	25	 
	Section 3.04.
	 	Repurchase at Option of Holders Upon a Fundamental Change	 	 	26	 
	Section 3.05.
	 	Repurchase of Debentures by the Company at the Option of Holders	 	 	27	 
	Section 3.06.
	 	Company Repurchase Notice; Tender Offer Compliance	 	 	28	 
	Section 3.07.
	 	Effect of Repurchase Notice; Withdrawal	 	 	30	 
	Section 3.08.
	 	Deposit of Repurchase Price	 	 	31	 

i 

 

	 	 	 	 	 	 	 
	 	 	 	 	Page	 
	 
	 	 	 	 	 	 
	Section 3.09.
	 	Debentures Repurchased in Part	 	 	31	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 4	 	 	 	 
	 
	 	Covenants	 	 	 	 
	 
	 	 	 	 	 	 
	Section 4.01.
	 	Payment of Debentures	 	 	31	 
	Section 4.02.
	 	Maintenance of Office or Agency	 	 	32	 
	Section 4.03.
	 	Rule 144A Information	 	 	32	 
	Section 4.04.
	 	Existence	 	 	32	 
	Section 4.05.
	 	Payment of Taxes and Other Claims	 	 	33	 
	Section 4.06.
	 	Compliance Certificate	 	 	33	 
	Section 4.07.
	 	Further Instruments and Acts	 	 	33	 
	Section 4.08.
	 	Additional Interest Notice	 	 	33	 
	Section 4.09.
	 	Exchange Act Reports	 	 	34	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 5	 	 	 	 
	 
	 	Successor Company	 	 	 	 
	 
	 	 	 	 	 	 
	Section 5.01.
	 	When Company May Merge or Transfer Assets	 	 	34	 
	Section 5.02.
	 	Successor to be Substituted	 	 	34	 
	Section 5.03.
	 	Opinion of Counsel to be Given to Trustee	 	 	35	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 6	 	 	 	 
	 
	 	Defaults and Remedies	 	 	 	 
	 
	 	 	 	 	 	 
	Section 6.01.
	 	Events of Default	 	 	35	 
	Section 6.02.
	 	Acceleration	 	 	37	 
	Section 6.03.
	 	Other Remedies	 	 	38	 
	Section 6.04.
	 	Waiver of Past Defaults	 	 	38	 
	Section 6.05.
	 	Control by Majority	 	 	38	 
	Section 6.06.
	 	Limitation on Suits	 	 	38	 
	Section 6.07.
	 	Rights of Debentureholders to Receive Payment	 	 	39	 
	Section 6.08.
	 	Collection Suit by Trustee	 	 	39	 
	Section 6.09.
	 	Trustee May File Proofs of Claim	 	 	40	 
	Section 6.10.
	 	Priorities	 	 	40	 
	Section 6.11.
	 	Undertaking for Costs	 	 	40	 
	Section 6.12.
	 	Waiver of Stay, Extension or Usury Laws	 	 	41	 
	Section 6.13.
	 	Alternative Remedy for Failure to Comply with Exchange Act Reporting Obligations	 	 	41	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 7	 	 	 	 
	 
	 	Trustee	 	 	 	 
	 
	 	 	 	 	 	 
	Section 7.01.
	 	Duties of Trustee	 	 	41	 
	Section 7.02.
	 	Rights of Trustee	 	 	43	 
	Section 7.03.
	 	Individual Rights of Trustee	 	 	43	 
	Section 7.04.
	 	Trustee’s Disclaimer	 	 	43	 

ii 

 

	 	 	 	 	 	 	 
	 	 	 	 	Page	 
	 
	 	 	 	 	 	 
	Section 7.05.
	 	Notice of Defaults	 	 	44	 
	Section 7.06.
	 	Reports by Trustee to Debentureholders	 	 	44	 
	Section 7.07.
	 	Compensation and Indemnity	 	 	44	 
	Section 7.08.
	 	Replacement of Trustee	 	 	45	 
	Section 7.09.
	 	Successor Trustee by Merger	 	 	46	 
	Section 7.10.
	 	Eligibility; Disqualification	 	 	46	 
	Section 7.11.
	 	Preferential Collection of Claims Against Company	 	 	46	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 8	 	 	 	 
	 
	 	Discharge of Indenture	 	 	 	 
	 
	 	 	 	 	 	 
	Section 8.01.
	 	Discharge of Liability on Debentures	 	 	47	 
	Section 8.02.
	 	Application of Trust Money	 	 	47	 
	Section 8.03.
	 	Repayment to Company	 	 	47	 
	Section 8.04.
	 	Reinstatement	 	 	48	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 9	 	 	 	 
	 
	 	Amendments	 	 	 	 
	 
	 	 	 	 	 	 
	Section 9.01.
	 	Without Consent of Debentureholders	 	 	48	 
	Section 9.02.
	 	With Consent of Debentureholders	 	 	49	 
	Section 9.03.
	 	Compliance with Trust Indenture Act	 	 	50	 
	Section 9.04.
	 	Revocation and Effect of Consents and Waivers	 	 	50	 
	Section 9.05.
	 	Notation on or Exchange of Debentures	 	 	51	 
	Section 9.06.
	 	Trustee to Sign Amendments	 	 	51	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 10	 	 	 	 
	 
	 	Conversion of Debentures	 	 	 	 
	 
	 	 	 	 	 	 
	Section 10.01.
	 	Right to Convert	 	 	51	 
	Section 10.02.
	 	Exercise of Conversion Right;
Issuance of Common Stock on Conversion; No Adjustment for Interest or Dividends	 	 	54	 
	Section 10.03.
	 	Cash Payments in Lieu of Fractional Shares	 	 	56	 
	Section 10.04.
	 	Conversion Rate	 	 	56	 
	Section 10.05.
	 	Adjustment to Conversion Rate upon a Non-Stock Change of Control	 	 	56	 
	Section 10.06.
	 	Adjustment of Conversion Rate	 	 	58	 
	Section 10.07.
	 	Effect of Reclassification, Consolidation, Merger or Sale	 	 	66	 
	Section 10.08.
	 	Taxes on Shares Issued	 	 	67	 
	Section 10.09.
	 	Reservation of Shares, Shares to
be Fully Paid; Compliance with Governmental Requirements; Listing of
Common Stock; Foreign Ownership Restrictions	 	 	68	 
	Section 10.10.
	 	Responsibility of Trustee	 	 	69	 
	Section 10.11.
	 	Notice to Holders Prior to Certain Actions	 	 	69	 
	Section 10.12.
	 	Stockholder Rights Plans	 	 	70	 
	Section 10.13.
	 	Settlement Upon Conversion	 	 	70	 
	Section 10.14.
	 	Settlement in Shares	 	 	72	 

iii 

 

	 	 	 	 	 	 	 
	 	 	 	 	Page	 
	 
	 	 	 	 	 	 
	Section 10.15.
	 	Conversion After a Public Acquirer Change of Control	 	 	73	 
	 
	 	 	 	 	 	 
	 
	 	ARTICLE 11	 	 	 	 
	 
	 	Miscellaneous	 	 	 	 
	 
	 	 	 	 	 	 
	Section 11.01.
	 	Trust Indenture Act Controls	 	 	74	 
	Section 11.02.
	 	Notices	 	 	74	 
	Section 11.03.
	 	Communication by Debentureholders with Other Debentureholders	 	 	75	 
	Section 11.04.
	 	Certificate and Opinion as to Conditions Precedent	 	 	75	 
	Section 11.05.
	 	Statements Required in Certificate or Opinion	 	 	75	 
	Section 11.06.
	 	When Debentures Disregarded	 	 	76	 
	Section 11.07.
	 	Rules by Trustee, Paying Agent and Registrar	 	 	76	 
	Section 11.08.
	 	Legal Holidays	 	 	76	 
	Section 11.09.
	 	GOVERNING LAW	 	 	76	 
	Section 11.10.
	 	No Recourse Against Others	 	 	76	 
	Section 11.11.
	 	Successors	 	 	77	 
	Section 11.12.
	 	Multiple Originals	 	 	77	 
	Section 11.13.
	 	Table of Contents; Headings	 	 	77	 
	Section 11.14.
	 	Calculations in Respect of the Debentures	 	 	77	 

	 	 	 	 	 
	Exhibit A

	 	—
	 	Form of Debenture
	Exhibit B

	 	—
	 	Form of Restrictive Legend for Common Stock Issued Upon
Conversion

iv 

 

     INDENTURE dated as of July 27, 2007 between GLOBAL INDUSTRIES, LTD., a Louisiana
corporation (the “Company”), and WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking
association, as trustee (the “Trustee”).

     WHEREAS, the Company has duly authorized the creation of an issue of its 2.75% Senior
Convertible Debentures due 2027 (the “Debentures”), having the terms, tenor, amount and other
provisions hereinafter set forth, and, to provide therefor, the Company has duly authorized the
execution and delivery of this Indenture; and

     WHEREAS, all things necessary to make the Debentures, when the Debentures are duly executed by
the Company and authenticated and delivered hereunder and duly issued by the Company, the valid
obligations of the Company, and to make this Indenture a valid and binding agreement of the
Company, in accordance with their and its terms, have been done and performed, and the execution of
this Indenture and the issue hereunder of the Debentures have in all respects been duly authorized,

     NOW, THEREFORE, THIS INDENTURE WITNESSETH:

     For and in consideration of the premises and the purchase of the Debentures by the Holders
thereof, it is mutually covenanted and agreed, for the equal and proportionate benefit of all
Holders of the Debentures, as follows:

ARTICLE 1

Definitions and Incorporation by Reference

     Section 1.01. Definitions.

     “Additional Interest” has the meaning specified for Additional Interest in Section 3(a) of the
Registration Rights Agreement.

     “Additional Interest Notice” has the meaning specified in Section 4.08.

     “Additional Shares” has the meaning specified in Section 10.05.

     “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 Person means the
power to direct 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.

 

 

     “Agent Members” has the meaning specified in Section 2.08(b)(vi).

     “Applicable Consideration” has the meaning specified in Section 10.07.

     “Bankruptcy Law” has the meaning specified in Section 6.01.

     “Board of Directors” means the Board of Directors of the Company or, other than in the case of
the definition of “Continuing Directors,” any committee thereof duly authorized to act on behalf of
such Board.

     “Business Day” means each day which is not a Legal Holiday.

     “Capital Stock” of any Person means any and all shares, interests, rights to purchase,
warrants, options, participations or other equivalents of or interests in (however designated)
equity of such Person, including any preferred stock, but excluding any debt securities convertible
into such equity.

     “Closing Date” means the date of this Indenture.

     “Closing Sale Price” of any share of Common Stock or any other security on any Trading Day
means the closing sale price of such security (or, if no closing sale price is reported, the
average of the closing bid and ask prices or, if more than one in either case, the average of the
average closing bid and the average closing ask prices) on such date as reported in composite
transactions for the principal U.S. securities exchange on which the shares of Common Stock are (or
the other security is) traded or, if the shares of Common Stock are (or the other security is) not
listed on a U.S. national or regional securities exchange, as reported by Pink Sheets LLC. In the
absence of such a quotation, the Closing Sale Price shall be determined by a nationally recognized
securities dealer retained by the Company to make such determination. The Closing Sale Price shall
be determined without reference to extended or after hours trading.

     “Code” means the Internal Revenue Code of 1986, as amended.

     “Common Stock” means any stock of any class of the Company which has no preference in respect
of dividends or of amounts payable in the event of any voluntary or involuntary liquidation,
dissolution or winding up of the Company and which is not subject to redemption by the Company.
Subject to the provisions of Section 10.07, however, shares issuable on conversion of Debentures
shall include only shares of the class designated as common stock of the Company at the date of
this Indenture (namely, the Common Stock, par value $0.01) or shares of any class or classes
resulting from any reclassification or reclassifications thereof and which have no preference in
respect of dividends or of amounts payable in the event of any voluntary or involuntary
liquidation, dissolution or winding up of the Company and which are not subject to redemption by
the Company; provided that if at any time there shall be more than one such resulting class, the
shares of each such class then so issuable on

2

 

conversion shall be substantially in the proportion which the total number of
shares of such class resulting from all such reclassifications bears to the total number of
shares of all such classes resulting from all such reclassifications.

     “Company” means the party named as such in this Indenture until a successor replaces it and,
thereafter, means the successor and, for purposes of any provision contained herein and required by
the TIA, each other obligor on the indenture securities.

     “Company Repurchase Notice” has the meaning specified in Section 3.06.

     “Continuing Directors” means, as of any date of determination, any member of the Board of
Directors who (i) was a member of the Board of Directors on the date of this Indenture; or (ii) was
nominated for election or elected to the Board of Directors with the approval of a majority of the
Continuing Directors who were members of the Board of Directors at the time of such new director’s
nomination or election.

     “Conversion Agent” has the meaning specified in Section 2.05.

     “Conversion Date” has the meaning specified in Section 10.02.

     “Conversion Notice” has the meaning specified in Section 10.02.

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

     “Conversion Rate” means initially 28.1821 shares of Common Stock per $1,000 principal amount
of Debentures, subject to adjustments as set forth herein.

     “Corporate Trust Office” or other similar term, means the designated office of the Trustee at
which at any particular time its corporate trust business as it relates to this Indenture shall be
administered, which office is, at the date as of which this Indenture is dated, located at Wells
Fargo Bank, National Association, Corporate Trust Services, 625 Marquette Avenue, N9311-110,
Minneapolis, MN 55479, Attention: Jeffery Rose, or at any other time at such other address as the
Trustee may designate from time to time by notice to the Company.

     “Current Market Price” has the meaning specified in Section 10.06(g).

     “Custodian” has the meaning specified in Section 6.01.

     “Daily Conversion Value” has the meaning specified in Section 10.13.

     “Daily Settlement Amount” has the meaning specified in Section 10.13.

3

 

     “Debentureholder” or “Holder” means the Person in whose name a Debenture is registered on the
Registrar’s books.

     “Debentures” means any Debentures issued, authenticated and delivered under this Indenture,
including any Global Debentures.

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

     “Depositary” means the clearing agency registered under the Exchange Act that is designated to
act as the depositary for the Global Debentures. DTC shall be the initial Depositary, until a
successor shall have been appointed and become such pursuant to the applicable provisions of this
Indenture, and thereafter, “Depositary” shall mean or include such successor.

     “Determination Date” has the meaning specified in Section 10.06(k).

     “Distributed Assets” has the meaning specified in Section 10.06(d).

     “DTC” means The Depository Trust Company.

     “Effective Date” has the meaning specified in Section 10.05.

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

     “ex” date, when used with respect to any issuance or distribution, means the first date on
which the shares of Common Stock trade regular way on the relevant exchange or in the relevant
market from which the Closing Sale Price was obtained without the right to receive such issuance or
distribution;

     “Exchange Act” means the Securities Exchange Act of 1934, as amended.

     “Fair Market Value” has the meaning specified in Section 10.06(g).

     “Fiscal Quarter” means, with respect to the Company, a fiscal quarter of the Company. The
Company shall confirm the ending dates of its fiscal quarters for the current fiscal year to the
Trustee upon the Trustee’s request.

     “Fundamental Change” means the occurrence of any of the following after the original issuance
of the Debentures:

     (a) the consummation of any transaction (other than any merger or consolidation) the result of
which is that any “person” becomes the “beneficial owner” (as these terms are defined in Rule 13d-3
and Rule 13d-5 under the Exchange Act), directly or indirectly, of more than 50% of the Company’s
Capital Stock that is at the time entitled to be voted by the holder thereof in the election of the
Board of Directors (or comparable body); or

4

 

     (b) the first day on which a majority of the members of the Board of Directors are not
Continuing Directors; or

     (c) the adoption of a plan relating to the liquidation or dissolution of the Company; or

     (d) the consolidation or merger of the Company with or into any other “person” (as this term
is used in Section 13(d)(3) of the Exchange Act) (other than one of the Company’s Subsidiaries), or
the sale, lease, transfer, conveyance or other disposition, in one or a series of related
transactions, of all or substantially all of the Company’s assets and those of its subsidiaries
taken as a whole to any “person” (as this term is used in Section 13(d)(3) of the Exchange Act)
(other than one of the Company’s Subsidiaries), other than:

     (i) any transaction pursuant to which the holders of the Company’s Capital Stock
entitled to vote generally in elections of the Board of Directors immediately prior to
such transaction collectively have the right to exercise, directly or indirectly, 50% or
more of the total voting power of all shares of the Capital Stock entitled to vote
generally in elections of the board of directors (or comparable body) of the continuing or
surviving person (or any parent thereof) immediately after giving effect to such
transaction; or

     (ii) any merger primarily for the purpose of changing the Company’s jurisdiction of
incorporation and resulting in a reclassification, conversion or
exchange of outstanding shares of Common Stock solely into shares of common stock of the surviving entity; or

     (e) the termination of trading of the Common Stock, which will be deemed to have occurred if
the Common Stock or other common stock into which the Debentures are convertible is not listed for
trading on a United States national securities exchange (including The Nasdaq Global Select Market
or The Nasdaq Global Market) or any similar United States system of automated dissemination of
quotations of securities prices, and no depositary receipts or other similar instruments
representing common equity interests that are so listed are approved for listing in the United
States.

     However, a Fundamental Change will be deemed not to have occurred if more than 90% of the
consideration in the transaction or transactions (other than cash payments for fractional shares
and cash payments made in respect of dissenters’ appraisal rights) which otherwise would constitute
a Fundamental Change under clauses (a) or (d) above consists of shares of Common Stock, depositary
receipts or other certificates representing common equity interests traded or to be traded
immediately following such transaction on a U.S. national securities exchange or quoted on The
Nasdaq Global Select Market or The Nasdaq Global Market and, as a result of the transaction or
transactions, the conversion obligation of the Company in respect of the Debentures and the

5

 

Conversion Rate are adjusted in accordance with Section 10.07 or 10.15, as applicable.

     “Fundamental Change Repurchase Date” has the meaning specified in Section 3.04(a).

     “GAAP” means generally accepted accounting principles in the United States of America as in
effect on the Closing Date, including those set forth in (i) the opinions and pronouncements of the
Accounting Principles Board of the American Institute of Certified Public Accountants, (ii)
statements and pronouncements of the Financial Accounting Standards Board, (iii) such other
statements by such other entity as approved by a significant segment of the accounting profession,
and (iv) the rules and regulations of the SEC governing the inclusion of financial statements
(including pro forma financial statements) in periodic reports required to be filed pursuant to
Section 13 of the Exchange Act, including opinions and pronouncements in staff accounting bulletins
and similar written statements from the accounting staff of the SEC.

     “Global Debenture” has the meaning specified in Section 2.02.

     “Indebtedness” means, with respect to any Person, all indebtedness of such Person for borrowed
money.

     “Indenture” means this Indenture as amended or supplemented from time to time.

     “Initial Purchasers” means each of Lehman Brothers Inc., Calyon Securities (USA) Inc., Natexis
Bleichroeder Inc. and Fortis Securities LLC (each, an “Initial Purchaser”).

     “interest” means, when used with reference to the Debentures, any interest payable under the
terms of the Debentures, including defaulted interest, Additional Interest, if any, payable under
the terms of the Registration Rights Agreement and additional interest, if any, payable pursuant to
Section 6.13.

     “Legal Holiday” has the meaning specified in Section 11.08.

     “Market Disruption Event” means the occurrence or existence for more than one-half hour period
in the aggregate on any scheduled Trading Day for the Common Stock of any suspension or limitation
imposed on trading (by reason of movements in price exceeding limits permitted by the stock
exchange or otherwise) in the Common Stock or in any options, contracts or future contracts
relating to the Common Stock and such suspension or limitation occurs or exists at any time before
1:00 p.m., New York City time on such day.

     “Maturity Date” means August 1, 2027.

6

 

     “Non-Stock Change of Control” means a transaction described under clause (a) or clause (d) in
the definition of Fundamental Change pursuant to which 10% or more of the consideration for Common
Stock (other than cash
payments for fractional shares, if applicable, and cash payments made in respect of
dissenters’ appraisal rights) in such transaction consists of cash or securities (or other
property) that are not shares of common stock, depositary receipts or other certificates
representing common equity interests traded or scheduled to be traded immediately following such
transaction on a U.S. national securities exchange (including The Nasdaq Global Select Market or
The Nasdaq Global Market).

     “Officer” means the Chairman of the Board, the Chief Executive Officer, the Chief Financial
Officer, the President, any Vice President, the Treasurer, any Assistant Treasurer, the Secretary
or any Assistant Secretary of the Company.

     “Officers’ Certificate” means a certificate signed by two Officers.

     “Opinion of Counsel” means a written opinion from legal counsel who is acceptable to the
Trustee. The counsel may be an employee of or counsel to the Company or the Trustee.

     “Paying Agent” has the meaning specified in Section 2.05.

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

     “PORTAL Market” means The PORTAL Market operated by the Nasdaq Stock Market or any successor
thereto.

     “Principal” of a Debenture means the principal of the Debenture plus the premium, if any,
payable on the Debenture that is due or overdue or is to become due at the relevant time.

     “protected purchaser” has the meaning specified in Section 2.09.

     “Purchase Agreement” means the Purchase Agreement dated July 23, 2007, among the Company and
the Initial Purchasers relating to the offering and sale of the Debentures.

     “Purchased Shares” has the meaning specified in Section 10.06(f).

     “Record Date” means, with respect to any interest payment date of the Debentures, the January
15 and July 15 preceding the applicable February 1 and August 1 interest payment date,
respectively.

     “Reference Period” has the meaning specified in Section 10.06(d).

7

 

     “Register” has the meaning specified in Section 2.05.

     “Registrar” has the meaning specified in Section 2.05.

     “Registration Rights Agreement” means the Registration Rights Agreement dated as of July 27,
2007 among the Company and the Initial Purchasers, as amended from time to time in accordance with
its terms.

     “Repurchase Date” has the meaning specified in Section 3.05(a).

     “Repurchase Notice” has the meaning specified in Section 3.04(c).

     “Responsible Officer” shall mean, when used with respect to the Trustee, any officer within
the corporate trust department of the Trustee with direct responsibility for the administration of
this Indenture and also means, with respect to a particular corporate trust matter, any other
officer to whom such matter is referred because of such person’s knowledge of or familiarity with
the particular subject.

     “Restricted Securities” has the meaning specified in Section 2.08(c).

     “Rule 144A” means Rule 144A as promulgated under the Securities Act as it may be amended from
time to time hereafter.

     “SEC” means the Securities and Exchange Commission.

     “Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations
promulgated thereunder, as in effect from time to time.

     “Significant Subsidiary” means any Subsidiary of a Person that would be a “Significant
Subsidiary” of the Person within the meaning of Rule 1-02 under Regulation S-X promulgated by the
SEC.

     “Spin-off” has the meaning specified in Section 10.06(d).

     “Spin-off Valuation Period” has the meaning specified in Section 10.06(d).

     “Stock Price” has the meaning specified in Section 10.05.

     “Subsidiary” of any Person means 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 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.

8

 

     “TIA” or “Trust Indenture Act” means the Trust Indenture Act of 1939 (15 U.S.C. §§
77aaa-77bbbb), as amended, as in effect on the date of this Indenture.

     “Trading Day” means a day during which (i) trading in the Common Stock generally occurs, (ii)
there is no Market Disruption Event and (iii) a Closing Sale Price for the Common Stock is provided
on The Nasdaq Global Select Market or, if the Common Stock is not listed on The Nasdaq Global
Select Market, on the principal other U.S. national or regional securities exchange on which the
Common Stock is then listed or, if the Common Stock is not listed on a U.S. national or regional
securities exchange, on the principal other market on which the Common Stock is then traded.

     “Trading Price” means, with respect to a Debenture on any date of determination, the average
of the secondary market bid quotations per $1,000 principal amount of Debentures obtained by the
Trustee for $5,000,000 principal amount of Debentures at approximately 3:30 p.m., New York City
time, on such determination date from two independent nationally recognized securities dealers
selected by the Company, which may include one or more of the Initial Purchasers; provided that if
two such bids cannot reasonably be obtained by the Trustee, but one such bid can be reasonably
obtained by the Trustee, then this one bid will be used; and provided further that, if the Trustee
cannot reasonably obtain at least one bid for $5,000,000 principal amount of Debentures from a
nationally recognized securities dealer, then, for the purposes of Section 10.01(a)(vii) only, the
Trading Price per $1,000 principal amount of Debentures will be deemed to be less than 98% of the
product of (a) the applicable Conversion Rate on such determination date and (b) the Closing Sale
Price of a share of Common Stock on such determination date.

     “Trigger Event” has the meaning specified in Section 10.06(d).

     “Trustee” means the party named as such in this Indenture until a successor replaces it and,
thereafter, means the successor.

     “Uniform Commercial Code” means the New York Uniform Commercial Code as in effect from time to
time.

     “Volume Weighted Average Price” has the meaning specified in Section 10.13.

     “Wholly Owned Subsidiary” means a Subsidiary of the Company, all the Capital Stock of which
(other than directors’ qualifying shares) is owned by the Company or another Wholly Owned
Subsidiary.

     Section 1.02. Incorporation by Reference of Trust Indenture Act. This Indenture is subject
to the mandatory provisions of the TIA, which are

9

 

incorporated by reference in and made a part of
this Indenture. The following TIA terms have the following meanings:

     “Commission” means the SEC.

     “indenture securities” means the Debentures.

     “indenture security holder” means a Debentureholder.

     “indenture to be qualified” means this Indenture.

     “indenture trustee” or “institutional trustee” means the Trustee.

     “obligor” on the indenture securities means the Company and any other obligor on the indenture
securities.

     All other TIA terms used in this Indenture that are defined by the TIA, defined by TIA
reference to another statute or defined by SEC rule have the meanings assigned to them by such
definitions.

     Section 1.03. Rules of Construction. Unless the context otherwise requires:

     (1) a term has the meaning assigned to it;

     (2) an accounting term not otherwise defined has the meaning assigned to it in accordance with
GAAP;

     (3) “or” is not exclusive;

     (4) “including” means including without limitation; and

     (5) words in the singular include the plural and words in the plural include the singular.

ARTICLE 2

The Debentures

     Section 2.01. Designation, Amount and Issuance of Debentures. The Debentures shall be
designated as “2.75% Senior Convertible Debentures due 2027”. The Debentures will initially be
issued in the aggregate principal amount of $325,000,000 (or up to $375,000,000 if the Initial
Purchasers’ option to purchase additional Debentures set forth in the Purchase Agreement is
exercised in full). The Company may issue additional Debentures in accordance with Section 2.14.
Upon the execution of this Indenture, or from time to time thereafter, Debentures may be executed
by the Company and delivered to the Trustee for authentication, and the Trustee shall thereupon
authenticate and deliver

10

 

Debentures upon a written order of the Company, such order signed by an
Officer of the Company, without any further action by the Company hereunder.

     Section 2.02. Form of the Debentures. The Debentures and the Trustee’s certificate of
authentication to be borne by such Debentures shall be substantially
in the form set forth in Exhibit A hereto. The terms and provisions contained in the form of
Debentures attached as Exhibit A hereto shall constitute, and are hereby expressly made, a part of
this Indenture and, to the extent applicable, the Company and the Trustee, by their execution and
delivery of this Indenture, expressly agree to such terms and provisions and to be bound thereby.

     Any of the Debentures may have such letters, numbers or other marks of identification and such
notations, legends, endorsements or changes as the officers executing the same may approve
(execution thereof to be conclusive evidence of such approval) and as are not inconsistent with the
provisions of this Indenture, or as may be required by the custodian for the Global Debentures, the
Depositary or by the National Association of Securities Dealers, Inc. in order for the Debentures
to be tradable on The PORTAL Market or as may be required for the Debentures to be tradable on any
other market developed for trading of securities pursuant to Rule 144A or as may be required to
comply with any applicable law or with any rule or regulation made pursuant thereto or with any
rule or regulation of any securities exchange or automated quotation system on which the Debentures
may be listed, or to conform to usage, or to indicate any special limitations or restrictions to
which any particular Debentures are subject.

     So long as the Debentures are eligible for book-entry settlement with the Depositary, or
unless otherwise required by law, or otherwise contemplated by Section 2.08(b), all of the
Debentures will be represented by one or more Debentures in global form registered in the name of
the Depositary or the nominee of the Depositary (“Global Debentures”). The transfer and exchange
of beneficial interests in any such Global Debentures shall be effected through the Depositary in
accordance with this Indenture and the applicable procedures of the Depositary. Except as provided
in Section 2.08(b), beneficial owners of a Global Debenture shall not be entitled to have
certificates registered in their names, will not receive or be entitled to receive physical
delivery of certificates in definitive form and will not be considered Holders of such Global
Debenture.

     Any Global Debenture shall represent such of the outstanding Debentures as shall be specified
therein and shall provide that it shall represent the aggregate amount of outstanding Debentures
from time to time endorsed thereon and that the aggregate amount of outstanding Debentures
represented thereby may from time to time be increased or reduced to reflect issuances,
redemptions, repurchases, conversions, transfers or exchanges permitted hereby. Any endorsement of
a Global Debenture to reflect the amount of any increase or decrease in the amount of outstanding
Debentures represented thereby shall be made by the Trustee or the custodian for the Global
Debenture, at the direction of the Trustee, in such manner and upon instructions given by the
Holder of such

11

 

Debentures in accordance with this Indenture. Payment of principal of, and interest
on, any Global Debentures shall be made to the Depositary in immediately available funds.

     Section 2.03. Date and Denomination of Debentures; Payment at Maturity; Payment of Interest.
The Debentures shall be issuable in registered form without coupons in denominations of $1,000
principal amount and integral multiples thereof. Each Debenture shall be dated the date of its
authentication and shall bear interest from the date specified on the face of the form of
Debentures attached as Exhibit A hereto. Interest on the Debentures shall be computed on the basis
of a 360-day year comprised of twelve 30-day months.

     On the Maturity Date, each Holder shall be entitled to receive on such date the principal
amount of the Debentures held and accrued and unpaid interest to, but not including, the Maturity
Date. With respect to Global Debentures, such principal and interest will be paid to the Depositary
in immediately available funds. With respect to any certificated Debentures, such principal and
interest will be payable at the Company’s office or agency maintained for that purpose, which
initially will be the Corporate Trust Office.

     The Person in whose name any Debenture is registered on the Register at 5:00 p.m., New York
City time, on any Record Date with respect to any interest payment date shall be entitled to
receive the interest payable on such interest payment date, except that the interest payable upon
maturity will be payable to the Person to whom principal is payable upon maturity.

     Notwithstanding the foregoing, any Debentures or portion thereof surrendered for conversion
during the period after the Record Date for any interest payment date and ending prior to the
corresponding interest payment date shall be accompanied by payment, in immediately available funds
or other funds acceptable to the Company, of an amount equal to the interest (excluding any
Additional Interest and any additional interest due under Section 6.13) otherwise payable on such
interest payment date on the principal amount being converted; provided that no such payment need
be made (1) if a Holder converts its Debentures in connection with a redemption and the Company has
specified a redemption date that is after a Record Date and on or prior to the corresponding
interest payment date, (2) if a Holder converts its Debentures in connection with a Fundamental
Change and the Company has specified a Fundamental Change Repurchase Date that is after a Record
Date and on or prior to the corresponding interest payment date or (3) to the extent of any overdue
interest, if overdue interest exists at the time of conversion with respect to such Debentures.

     Except as provided above, the Company shall pay interest (i) on any Global Debentures by wire
transfer of immediately available funds to the account of the Depositary or its nominee, (ii) on
any Debentures in certificated form having a principal amount of less than $2,000,000, by check
mailed to the address of the Person entitled thereto as it appears in the Register, provided that
at

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maturity, interest will be payable at the office of the Company maintained by the Company for
such purposes, which shall initially be an office or agency of the Trustee and (iii) on any
Debentures in certificated form having a principal amount of $2,000,000 or more, by wire transfer
in immediately available funds at the
election of the Holder of such Debentures duly delivered to the Trustee at least five Business
Days prior to the relevant interest payment date, provided that at maturity, interest will be
payable at the office of the Company maintained by the Company for such purposes, which shall
initially be an office or agency of the Trustee. If a payment date is not a Business Day, payment
shall be made on the next succeeding Business Day, and no additional interest shall accrue thereon.

     Section 2.04. Execution and Authentication. One or more Officers shall sign the Debentures
for the Company by manual or facsimile signature.

     If an Officer whose signature is on a Debenture no longer holds that office at the time the
Trustee authenticates the Debenture, the Debenture shall be valid nevertheless.

     A Debenture shall not be valid until an authorized signatory of the Trustee manually signs the
certificate of authentication on the Debenture. The signature shall be conclusive evidence that
the Debenture has been authenticated under this Indenture.

     The Trustee may appoint an authenticating agent reasonably acceptable to the Company to
authenticate the Debentures. Any such appointment shall be evidenced by an instrument signed by a
Responsible Officer, a copy of which shall be furnished to the Company. Unless limited by the
terms of such appointment, an authenticating agent may authenticate Debentures whenever the Trustee
may do so. Each reference in this Indenture to authentication by the Trustee includes
authentication by such agent. An authenticating agent has the same rights as any Registrar, Paying
Agent or agent for service of notices and demands.

     Section 2.05. Registrar, Paying Agent and Conversion Agent. The Company shall maintain an
office or agency where Debentures may be presented for registration of transfer or for exchange
(the “Registrar”) and an office or agency where Debentures may be presented for payment (the
“Paying Agent”) and an office or agency where the Debentures may be presented for conversion (the
“Conversion Agent”). The Corporate Trust Office shall be considered as one such office or agency
of the Company for each of the aforesaid purposes. The Registrar shall keep a register of the
Debentures (the “Register”) and of their transfer and exchange. The Company may have one or more
co-registrars and one or more additional paying agents. The term “Paying Agent” includes any
additional paying agent, and the term “Registrar” includes any co-registrars. The Company
initially appoints the Trustee as (i) Registrar and Paying Agent in connection with the Debentures,
(ii) the custodian with respect to the Global Debentures and (iii) the Conversion Agent.

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     The Company shall enter into an appropriate agency agreement with any Registrar or Paying
Agent not a party to this Indenture, which shall incorporate the terms of the TIA. The agreement
shall implement the provisions of this
Indenture that relate to such agent. The Company shall notify the Trustee of the name and
address of any such agent. If the Company fails to maintain a Registrar, Paying Agent, or
Conversion Agent, the Trustee shall act as such and shall be entitled to appropriate compensation
therefor pursuant to Section 7.07. The Company or any of its domestically organized Wholly Owned
Subsidiaries may act as Paying Agent, Registrar or Conversion Agent.

     The Company may remove any Registrar, Paying Agent or Conversion Agent upon written notice to
such Registrar, Paying Agent or Conversion Agent and to the Trustee; provided that no such removal
shall become effective until (1) acceptance of an appointment by a successor as evidenced by an
appropriate agreement entered into by the Company and such successor Registrar, Paying Agent or
Conversion Agent, as the case may be, and delivered to the Trustee or (2) notification to the
Trustee that the Trustee shall serve as Registrar, Paying Agent or Conversion Agent until the
appointment of a successor in accordance with clause (1) above. The Registrar, Paying Agent or
Conversion Agent may resign at any time upon written notice; provided that the Trustee may resign
as Paying Agent, Registrar or Conversion Agent only if the Trustee also resigns as Trustee in
accordance with Section 7.08.

     Section 2.06. Paying Agent to Hold Money in Trust. Prior to each due date of the principal
and interest on any Debenture, the Company shall deposit with the Paying Agent (or if the Company
or a Subsidiary is acting as Paying Agent, segregate and hold in trust for the benefit of the
Persons entitled thereto) a sum sufficient to pay such principal and interest when so becoming due.
The Company shall require each Paying Agent (other than the Trustee) to agree in writing that the
Paying Agent shall hold in trust for the benefit of Debentureholders or the Trustee all money held
by the Paying Agent for the payment of principal of or interest on the Debentures and shall notify
the Trustee of any default by the Company in making any such payment. If the Company or a
Subsidiary of the Company acts as Paying Agent, it shall segregate the money held by it as Paying
Agent and hold it as a separate trust fund. The Company at any time may require a Paying Agent to
pay all money held by it to the Trustee and to account for any funds disbursed by the Paying Agent.
Upon complying with this Section, the Paying Agent shall have no further liability for the money
delivered to the Trustee.

     Section 2.07. Debentureholder Lists. The Trustee shall preserve in as current a form as is
reasonably practicable the most recent list available to it of the names and addresses of
Debentureholders. If the Trustee is not the Registrar, the Company shall furnish, or cause the
Registrar to furnish, to the Trustee, in writing at least five Business Days before each interest
payment date and at such other times as the Trustee may request in writing, a list in such form and
as of

14

 

such date as the Trustee may reasonably require of the names and addresses of
Debentureholders.

     Section 2.08. Exchange and Registration of Transfer of Debentures; Restrictions on Transfer.
(a) The Company shall cause to be kept at the Corporate Trust Office the Register in which, subject
to such reasonable regulations as it may prescribe, the Company shall provide for the registration
of Debentures and of transfers of Debentures. The Register shall be in written form or in any form
capable of being converted into written form within a reasonably prompt period of time.

     Upon surrender for registration of transfer of any Debentures to the Registrar or any
co-registrar, and satisfaction of the requirements for such transfer set forth in this Section
2.08, the Company shall execute, and the Trustee shall authenticate and deliver, in the name of the
designated transferee or transferees, one or more new Debentures of any authorized denominations
and of a like aggregate principal amount and bearing such restrictive legends as may be required by
this Indenture.

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

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

     All Debentures presented or surrendered for registration of transfer or for exchange,
redemption, repurchase or conversion shall (if so required by the Company or the Registrar) be duly
endorsed, or be accompanied by a written instrument or instruments of transfer in form satisfactory
to the Company, and the Debentures shall be duly executed by the Holder thereof or his attorney
duly authorized in writing.

     No service charge shall be made to any Holder for any registration of, transfer or exchange of
Debentures, but the Company may require payment by the Holder of a sum sufficient to cover any tax,
assessment or other governmental charge that may be imposed in connection with any registration of
transfer or exchange of Debentures.

     Neither the Company nor the Trustee nor any Registrar shall be required to exchange, issue or
register a transfer of (a) any Debentures for a period of

15

 

fifteen calendar days next preceding date
of mailing of a notice of redemption, (b) any Debentures or portions thereof called for redemption
pursuant to Section 3.02, except for the unredeemed portion of any Debentures being redeemed in
part, (c)
any Debentures or portions thereof surrendered for conversion pursuant to Article 10, (d) any
Debentures or portions thereof tendered for repurchase (and not withdrawn) pursuant to Section
3.04 or (e) any Debentures or portions thereof tendered for repurchase (and not withdrawn) pursuant
to Section 3.05.

     (b) The following provisions shall apply only to Global Debentures:

     (i) Each Global Debenture authenticated under this Indenture shall be registered in
the name of the Depositary or a nominee thereof and delivered to the Depositary or a
nominee thereof or a custodian therefor, and each such Global Debenture shall constitute a
single Debenture for all purposes of this Indenture.

     (ii) Notwithstanding any other provision in this Indenture, no Global Debenture may
be exchanged in whole or in part for Debentures registered, and no transfer of a Global
Debenture in whole or in part may be registered, in the name of any Person other than the
Depositary or a nominee thereof unless (A) the Depositary (x) has notified the Company
that it is unwilling or unable to continue as Depositary for such Global Debenture or (y)
has ceased to be a clearing agency registered under the Exchange Act, and a successor
depositary has not been appointed by the Company within 90 calendar days, or (B) the
Company, in its sole discretion, notifies the Trustee in writing that it no longer wishes
to have all the Debentures represented by Global Debentures. Any Global Debentures
exchanged pursuant to this Section 2.08(b)(ii) shall be so exchanged in whole and not in
part.

     (iii) In addition, certificated Debentures will be issued in exchange for beneficial
interests in a Global Debenture upon request by or on behalf of the Depositary in
accordance with customary procedures following the request of a beneficial owner seeking
to enforce its rights under the Debentures or this Indenture, including its rights
following the occurrence of an Event of Default.

     (iv) Debentures issued in exchange for a Global Debenture or any portion thereof
pursuant to clause (ii) or (iii) above shall be issued in definitive, fully registered
form, without interest coupons, shall have an aggregate principal amount equal to that of
such Global Debentures or portion thereof to be so exchanged, shall be registered in such
names and be in such authorized denominations as the Depositary shall designate and shall
bear any legends required hereunder. Any Global Debentures to be exchanged shall be
surrendered by the Depositary to the Trustee, as Registrar, provided that pending
completion of the exchange of a Global Debenture, the Trustee acting as custodian for the
Global Debentures for

16

 

the Depositary or its nominee with respect to such Global
Debentures, shall reduce the principal amount thereof, by an amount equal to the portion
thereof to be so exchanged, by means of an appropriate adjustment made on the records of the Trustee.
Upon any such surrender or adjustment, the
Trustee shall authenticate and make available for delivery the Debentures issuable on such
exchange to or upon the written order of the Depositary or an authorized representative
thereof.

     (v) In the event of the occurrence of any of the events specified in clause (ii)
above or upon any request described in clause (iii) above, the Company will promptly make
available to the Trustee a sufficient supply of certificated Debentures in definitive,
fully registered form, without interest coupons.

     (vi) Neither any members of, or participants in, the Depositary (“Agent Members”) nor
any other Persons on whose behalf Agent Members may act shall have any rights under this
Indenture with respect to any Global Debentures registered in the name of the Depositary
or any nominee thereof, and the Depositary or such nominee, as the case may be, may be
treated by the Company, the Trustee and any agent of the Company or the Trustee as the
absolute owner and Holder of such Global Debentures for all purposes whatsoever.
Notwithstanding the foregoing, nothing herein shall prevent the Company, the Trustee or
any agent of the Company or the Trustee from giving effect to any written certification,
proxy or other authorization furnished by the Depositary or such nominee, as the case may
be, or impair, as between the Depositary, its Agent Members and any other Person on whose
behalf an Agent Member may act, the operation of customary practices of such Persons
governing the exercise of the rights of a Holder of any Debentures.

     (vii) At such time as all interests in a Global Debenture have been redeemed,
repurchased, converted, cancelled or exchanged for Debentures in certificated form, such
Global Debenture shall, upon receipt thereof, be canceled by the Trustee in accordance
with standing procedures and instructions existing between the Depositary and the
custodian for the Global Debenture. At any time prior to such cancellation, if any
interest in a Global Debenture is redeemed, repurchased, converted, cancelled or exchanged
for Debentures in certificated form, the principal amount of such Global Debenture shall,
in accordance with the standing procedures and instructions existing between the
Depositary and the custodian for the Global Debenture, be appropriately reduced, and an
endorsement shall be made on such Global Debenture, by the Trustee or the custodian for
the Global Debenture, at the direction of the Trustee, to reflect such reduction.

     (c) Until the expiration of the holding period applicable to sales of Debentures under Rule
144(k) under the Securities Act (or any successor

17

 

provision), (1) any certificate evidencing a
Debenture shall bear a legend in substantially the form identified as the “Restricted Security
Legend” (the “Restricted Security Legend”) in the form of Debenture set forth in Exhibit A
and (2) any certificate representing Common Stock issued upon conversion of the Debentures
shall bear a legend in substantially the form of Exhibit B, unless such Debenture (or such Common
Stock) has been sold pursuant to a registration statement that has been declared effective under
the Securities Act (and which continues to be effective at the time of such transfer) or sold
pursuant to Rule 144 under the Securities Act or any similar provision then in force, or unless
otherwise agreed by the Company in writing, with written notice thereof to the Trustee.

     Every Debenture (and all securities issued in exchange therefor or in substitution thereof)
that bears or is required under this Section 2.08(c) to bear the legend required by this Section
2.08(c) (together with any Common Stock issued upon conversion of the Debentures and required to
bear the legend set forth in Exhibit B, collectively, the “Restricted Securities”) shall be subject
to the restrictions on transfer set forth in this Section 2.08(c) and such legends, unless such
restrictions on transfer shall be waived by written consent of the Company following receipt of
legal advice supporting the permissibility of the waiver of such transfer restrictions, and the
Holder of any Restricted Securities, by such Holder’s acceptance thereof, agrees to be bound by all
such restrictions on transfer. As used in this Section 2.08(c), the term “transfer” means any
sale, pledge, loan, transfer or other disposition whatsoever of any Restricted Security or any
interest therein.

     In connection with any transfer of the Debentures that are Restricted Securities prior to the
date two years after the last date of original issuance of the Debentures (other than a transfer
pursuant to a registration statement which has been declared effective under the Securities Act),
the Holder must complete and deliver the form of assignment set forth on the certificate
representing the Debenture with the appropriate box checked to the Trustee (or any successor
Trustee, as applicable). If the proposed transfer is pursuant to clause 2(D) of the Restricted
Security Legend, the Holder must, prior to such transfer, furnish to the Trustee (or any successor
Trustee, as applicable), such certifications, legal opinions or other information as the Company
may reasonably require to confirm that such transfer is being made pursuant to an exemption from,
or in a transaction not subject to, the registration requirements of the Securities Act. The
Restricted Security Legend will be removed upon the earlier of the transfer of the security
evidenced thereby pursuant to clause 2(B) of the Restricted Security Legend or the expiration of
two years from the last date of original issuance of the Debentures.

     If Rule 144(k) as promulgated under the Securities Act is amended to change the two-year
period under Rule 144(k), then, the references in the Restricted Security Legend and in Exhibit B
to “two years,” and in the corresponding transfer restrictions described above, will refer to such
changed period. If Rule 144(k) is amended so that a longer holding period applies in

18

 

circumstances
where a holder of the Debentures or common stock issuable upon conversion of the Debentures has
engaged in hedging activities, the longer holding period shall be the changed holding period. As
soon as practicable after
the Company has knowledge of the effectiveness of any such amendment to change the two-year
period under Rule 144(k), unless such changes would otherwise be prohibited by, or would otherwise
cause a violation of, the federal securities laws applicable at the time, the Company will provide
to the Trustee certain certificates and opinions as to the effectiveness of such amendment and the
effectiveness of such change to the restrictive legends and transfer restrictions applicable to the
Restricted Securities.

     Any Debentures that are Restricted Securities and as to which such restrictions on transfer
shall have expired in accordance with their terms or as to conditions for removal of the Restricted
Security Legend set forth therein have been satisfied may, upon surrender of such Debentures for
exchange to the Registrar in accordance with the provisions of this Section 2.08, be exchanged for
a new Debenture or Debentures, of like tenor and aggregate principal amount, which shall not bear
the Restricted Security Legend required by this Section 2.08(c). If such Restricted Security
surrendered for exchange is represented by a Global Debenture bearing the Restricted Security
Legend, the principal amount of the legended Global Debentures shall be reduced by the appropriate
principal amount and the principal amount of a Global Debenture without the legend set forth in
this Section 2.08(c) shall be increased by an equal principal amount. If a Global Debenture
without the Restricted Security Legend is not then outstanding, the Company shall execute and the
Trustee shall authenticate and deliver an unlegended Global Debenture to the Depositary.

     (d) The Trustee shall have no responsibility or obligation to any Agent Members or any other
Person with respect to the accuracy of the books or records, or the acts or omissions, of the
Depositary or its nominee or of any participant or member thereof, with respect to any ownership
interest in the Debentures or with respect to the delivery to any Agent Member or other Person
(other than the Depositary) of any notice (including any notice of redemption) or the payment of
any amount, under or with respect to such Debentures. All notices and communications to be given
to the Holders of Debentures and all payments to be made to Holders of Debentures under the
Debentures shall be given or made only to or upon the order of the registered Holders of Debentures
(which shall be the Depositary or its nominee in the case of a Global Debenture). The rights of
beneficial owners in any Global Debentures shall be exercised only through the Depositary subject
to the customary procedures of the Depositary. The Trustee may rely and shall be fully protected
in relying upon information furnished by the Depositary with respect to its Agent Members.

     (e) 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 Debentures (including any transfers between or
among Agent Members) other

19

 

than to require delivery of such certificates and other documentation or
evidence as are expressly required by, and to do so if and when expressly required by, the
terms of this Indenture, and to examine the same to determine substantial compliance as to
form with the express requirements hereof.

     Section 2.09. Replacement Debentures. If a mutilated Debenture is surrendered to the
Registrar or if the Debentureholder of a Debenture claims that the Debenture has been lost,
destroyed or wrongfully taken, the Company shall issue and the Trustee shall authenticate a
replacement Debenture if the requirements of Section 8-405 of the Uniform Commercial Code are met,
such that the Debentureholder (i) satisfies the Company or the Trustee within a reasonable time
after he has notice of such loss, destruction or wrongful taking and the Registrar does not
register a transfer prior to receiving such notification, (ii) makes such request to the Company or
the Trustee prior to the Debenture being acquired by a protected purchaser as defined in Section
8-303 of the Uniform Commercial Code (a “protected purchaser”) and (iii) satisfies any other
reasonable requirements of the Trustee and the Company. If required by the Trustee or the Company,
such Debentureholder shall furnish an indemnity bond sufficient in the judgment of the Trustee to
protect the Company, the Trustee, the Paying Agent and the Registrar from any loss that any of them
may suffer if a Debenture is replaced. The Company and the Trustee may charge the Debentureholder
for their expenses in replacing a Debenture. In case any Debenture which has matured or is about
to mature or has been called for redemption or has been properly tendered for repurchase on a
Fundamental Change Repurchase Date (and not withdrawn) or has been tendered for repurchase on a
Repurchase Date (and not withdrawn), as the case may be, or is to be converted into Common Stock,
shall become mutilated or be destroyed, lost or stolen, the Company may, instead of issuing a
substitute Debenture, pay or authorize the payment of or convert or authorize the conversion of the
same (without surrender thereof except in the case of a mutilated Debenture), as the case may be,
if the applicant for such payment or conversion shall furnish to the Company, to the Trustee and,
if applicable, to such authenticating agent such security or indemnity as may be required by them
to save each of them harmless for any loss, liability, cost or expense caused by or in connection
with such substitution, and, in every case of destruction, loss or theft, the applicant shall also
furnish to the Company, the Trustee and, if applicable, any Paying Agent or conversion agent
evidence to their satisfaction of the destruction, loss or theft of such Debentures and of the
ownership thereof.

     Every replacement Debenture is an additional obligation of the Company.

     The provisions of this Section 2.09 are exclusive and shall preclude (to the extent lawful)
all other rights and remedies with respect to the replacement or payment of mutilated, lost,
destroyed or wrongfully taken Debentures.

     Section 2.10. Outstanding Debentures. Debentures outstanding at any time are all Debentures
authenticated by the Trustee except for those canceled by

20

 

it, those delivered to it for
cancellation and those described in this Section as not
outstanding. A Debenture does not cease to be outstanding because the Company or an Affiliate
of the Company holds the Debenture.

     If a Debenture is replaced pursuant to Section 2.09, it ceases to be outstanding unless the
Trustee and the Company receive proof satisfactory to them that the replaced Debenture is held by a
protected purchaser.

     If the Paying Agent segregates and holds in trust, in accordance with this Indenture, on a
redemption date, Repurchase Date or Maturity Date money sufficient to pay all principal and
interest payable on that date with respect to the Debentures (or portions thereof) to be redeemed,
repurchased or maturing, as the case may be, and the Paying Agent is not prohibited from paying
such money to the Debentureholders on that date pursuant to the terms of this Indenture, then on
and after that date such Debentures (or portions thereof) cease to be outstanding and interest on
them ceases to accrue.

     Section 2.11. Temporary Debentures. Pending the preparation of Debentures in certificated
form, the Company may execute and the Trustee or an authenticating agent appointed by the Trustee
shall, upon the written request of the Company, authenticate and deliver temporary Debentures
(printed or lithographed). Temporary Debentures shall be issuable in any authorized denomination,
and substantially in the form of the Debentures in certificated form, but with such omissions,
insertions and variations as may be appropriate for temporary Debentures, all as may be determined
by the Company. Every such temporary Debentures shall be executed by the Company and authenticated
by the Trustee or such authenticating agent upon the same conditions and in substantially the same
manner, and with the same effect, as the Debentures in certificated form. Without unreasonable
delay, the Company will execute and deliver to the Trustee or such authenticating agent Debentures
in certificated form and thereupon any or all temporary Debentures may be surrendered in exchange
therefor, at each office or agency maintained by the Company pursuant to Section 4.02 and the
Trustee or such authenticating agent shall authenticate and make available for delivery in exchange
for such temporary Debentures an equal aggregate principal amount of Debentures in certificated
form. Such exchange shall be made by the Company at its own expense and without any charge
therefor. Until so exchanged, the temporary Debentures shall in all respects be entitled to the
same benefits and subject to the same limitations under this Indenture as Debentures in
certificated form authenticated and delivered hereunder.

     Section 2.12. Cancellation. The Company at any time may deliver Debentures to the Trustee
for cancellation. The Registrar and the Paying Agent shall forward to the Trustee any Debentures
surrendered to them for registration of transfer, exchange or payment. The Trustee and no one else
shall cancel all Debentures surrendered for registration of transfer, exchange, payment or
cancellation and deliver canceled Debentures to the Company pursuant to written direction by an
Officer. The Company may not issue new Debentures to replace

21

 

Debentures it has redeemed, paid or
delivered to the Trustee for cancellation. The
Trustee shall not authenticate Debentures in place of canceled Debentures other than pursuant
to the terms of this Indenture.

     Section 2.13. CUSIP and ISIN Numbers. The Company in issuing the Debentures may use “CUSIP”
and “ISIN” numbers (if then generally in use) and, if so, the Trustee shall use “CUSIP” and “ISIN”
numbers in notices of redemption as a convenience to Debentureholders; provided that any such
notice may state that no representation is made as to the correctness of such numbers either as
printed on the Debentures or as contained in any notice of a redemption and that reliance may be
placed only on the other identification numbers printed on the Debentures, and any such redemption
shall not be affected by any defect in or omission of such numbers.

     Section 2.14. Additional Debentures. The Company may, from time to time without the consent
of the Holders of outstanding Debentures, create and issue pursuant to this Indenture additional
Debentures (“Additional Debentures”) having terms and conditions identical to those of the other
outstanding Debentures, except that Additional Debentures may have a different issue price than
other outstanding Debentures; have a different amount of interest payable on the first interest
payment date after issuance than is payable on other outstanding Debentures; have terms applicable
to such Additional Debentures in order to conform to and ensure compliance with the Securities Act
(or other applicable securities laws) and any registration rights or similar agreement applicable
to such Additional Debentures, which are not adverse in any material respect to the Holder of any
outstanding Debentures (other than such Additional Debentures); and be entitled to additional
interest or other liquidated damages specified in a registration rights agreement not applicable to
other outstanding Debentures and not be entitled to such additional interest or other liquidated
damages applicable to other outstanding Debentures; provided that no adjustment pursuant to this
Section 2.14 shall cause such Additional Debentures to constitute a different class of securities
than the Debentures issued pursuant to the Purchase Agreement for U.S. federal income tax purposes;
and provided further, that the Additional Debentures shall have the same CUSIP number as other
outstanding Debentures. No Additional Debentures may be issued if on the issue date therefor any
Event of Default has occurred and is continuing. The Debentures originally issued pursuant to the
Purchase Agreement and any Additional Debentures shall be treated as a single class for all
purposes under this Indenture, including waivers, amendments, redemptions, offers to purchase and
United States federal tax purposes.

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ARTICLE 3

Redemption and Repurchase of Debentures

     Section 3.01. Optional Redemption of Debentures. At any time on or after August 1, 2014, the
Debentures may be redeemed at the option of the
Company, in whole or in part, upon notice as set forth in Section 3.02, in cash at the
redemption price equal to 100% of the principal amount thereof. In addition, the Company will pay
interest on the Debentures being redeemed, which interest will include such interest accrued and
unpaid to, but excluding, the redemption date; provided that if the redemption date is after a
Record Date and on or prior to the corresponding interest payment date, the interest will be paid
on the redemption date to the Holder of record on the Record Date. The Company may not redeem any
Debentures if a Default in the payment of interest on the Debentures has occurred and is
continuing.

     Section 3.02. Notice of Optional Redemption; Selection of Debentures to be Redeemed. If the
Company shall desire to exercise the right to redeem all or, as the case may be, any part of the
Debentures pursuant to Section 3.01, it shall fix a date for redemption and it or, at its written
request received by the Trustee not fewer than five Business Days prior (or such shorter period of
time as may be acceptable to the Trustee) to the date the notice of redemption is to be mailed, the
Trustee in the name of and at the expense of the Company, shall mail or cause to be mailed a notice
of such redemption not fewer than 30 calendar days nor more than 60 calendar days prior to the
redemption date to each Holder of Debentures so to be redeemed in whole or in part at its last
address as the same appears on the Register; provided that if the Company makes such request of the
Trustee, the Company shall provide the Trustee with the text of the notice of redemption and shall
give written notice of the redemption date to the Trustee. Such mailing shall be by first class
mail. The notice, if mailed in the manner herein provided, shall be conclusively presumed to have
been duly given, whether or not the Holder receives such notice. In any case, failure to give such
notice by mail or any defect in the notice to the Holder of any Debentures designated for
redemption as a whole or in part shall not affect the validity of the proceedings for the
redemption of any other Debentures.

     Each such notice of redemption shall specify: (i) the aggregate principal amount of Debentures
to be redeemed, (ii) the CUSIP number or numbers of the Debentures being redeemed, (iii) the date
fixed for redemption (which shall be a Business Day), (iv) the redemption price at which Debentures
are to be redeemed, (v) the place or places of payment and that payment will be made upon
presentation and surrender of such Debentures, (vi) that interest accrued and unpaid to, but
excluding, the date fixed for redemption will be paid as specified in said notice, and that on and
after said date interest thereon or on the portion thereof to be redeemed will cease to accrue,
(vii) that the Holder has a right to convert the Debentures called for redemption, (viii) the
Conversion Rate on the date of such notice, (ix) the time and date on which the right to convert
such Debentures or portions thereof will expire, (x) the formula for determining the

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amount of cash
and the number of shares, if any, to be delivered to the Holder upon conversion pursuant to
Section 10.13 and the date on which the Conversion Period begins and (xi) that the Company will
pay cash for fractional interests in shares of Common Stock, if any, as provided in this Indenture.
If fewer than all
the Debentures are to be redeemed, the notice of redemption shall identify the Debentures to
be redeemed (including CUSIP numbers, if any). If any Debentures are to be redeemed in part only,
the notice of redemption shall state the portion of the principal amount thereof to be redeemed and
shall state that, on and after the redemption date, upon surrender of such Debentures, a new
Debenture or Debentures in principal amount equal to the unredeemed portion thereof will be issued.

     Whenever any Debentures are to be redeemed, the Company will give the Trustee written notice
of the redemption date, together with an Officers’ Certificate as to the aggregate principal amount
of Debentures to be redeemed not fewer than 30 calendar days prior to the redemption date.

     On or prior to the redemption date specified in the notice of redemption given as provided in
this Section 3.02, the Company will deposit with the Paying Agent (or, if the Company is acting as
its own Paying Agent, set aside, segregate and hold in trust as provided in Section 2.06) an
amount of money in immediately available funds sufficient to redeem on the redemption date all the
Debentures (or portions thereof) so called for redemption (other than those theretofore surrendered
for conversion) at the appropriate redemption price, together with accrued and unpaid interest to,
but excluding, the redemption date; provided that if such payment is made on the redemption date,
it must be received by the Paying Agent, by 11:00 a.m., New York City time, on such date. If any
Debentures called for redemption are converted pursuant hereto prior to such redemption date, any
money deposited with the Paying Agent or so segregated and held in trust for the redemption of such
Debentures shall be paid to the Company or, if then held by the Company, shall be discharged from
such trust.

     If less than all of the outstanding Debentures are to be redeemed, the Trustee shall select
the Debentures or portions thereof of the Global Debentures or the Debentures in certificated form
to be redeemed (in principal amounts of $1,000 or multiples thereof) by lot, on a pro rata basis or
by another method the Trustee deems fair and appropriate (and in such manner as complies with
applicable legal requirements). If any Debenture selected for redemption is submitted for
conversion in part after such selection, the portion of such Debentures submitted for conversion
shall be deemed (so far as may be possible) to be the portion to be selected for redemption. The
Debentures (or portions thereof) so selected for redemption shall be deemed duly selected for
redemption for all purposes hereof, notwithstanding that any such Debentures are submitted for
conversion in part before the mailing of the notice of redemption.

     Upon any redemption of less than all of the outstanding Debentures, the Company and the
Trustee may (but need not), solely for purposes of determining

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the pro rata allocation among such
Debentures that are unconverted and outstanding at the time of redemption, treat as outstanding any
Debentures surrendered for conversion during the period of fifteen calendar days preceding the
mailing of a notice of redemption and may (but need not) treat as outstanding
any Debentures authenticated and delivered during such period in exchange for the unconverted
portion of any Debentures converted in part during such period.

     Section 3.03. Payment of Debentures Called for Redemption. If notice of redemption has been
given as provided in Section 3.02, the Debentures or portion of Debentures with respect to which
such notice has been given shall, unless converted pursuant to the terms hereof, become due and
payable on the date fixed for redemption and at the place or places stated in such notice at the
redemption price, and interest accrued and unpaid to, but excluding, the redemption date shall be
paid to the Holder of the Debentures or portion of the Debentures to be redeemed on the redemption
date (unless the redemption date is after a Record Date and on or prior to the corresponding
interest payment date, in which event the interest will be paid on the interest payment date to the
Holder of record on the Record Date), and, unless the Company shall default in the payment of such
Debentures at the redemption price, plus interest, if any, accrued and unpaid to, but excluding,
such date, interest on the Debentures or portion of Debentures so called for redemption, shall
cease to accrue on and after such date and, after 5:00 p.m., New York City time, on the Business
Day immediately preceding the redemption date (unless the Company shall default in the payment of
such Debentures at the redemption price, together with interest accrued to such date) such
Debentures shall cease to be convertible and, except as provided in Section 2.06 and Section
8.02, to be entitled to any benefit or security under this Indenture, and the Holders thereof shall
have no right in respect of such Debentures except the right to receive the redemption price
thereof plus accrued and unpaid interest to, but excluding, the redemption date. On presentation
and surrender of such Debentures at a place of payment in said notice specified, the said
Debentures or the specified portions thereof shall be paid and redeemed by the Company at the
redemption price, together with interest accrued and unpaid thereon to, but excluding, the
redemption date; provided that if the applicable redemption date is after the applicable Record
Date and on or before an interest payment date, the interest payable on such interest payment date
shall be paid on the redemption date to the Holders of record of such Debentures on the applicable
Record Date instead of the Holders surrendering such Debentures for redemption on such date.

     Upon presentation of any Debentures redeemed in part only, the Company shall execute and the
Trustee shall authenticate and make available for delivery to the Holder thereof, at the expense of
the Company, a new Debenture or Debentures of authorized denominations, in principal amount equal
to the unredeemed portion of the Debentures so presented.

     Notwithstanding the foregoing, the Trustee shall not redeem any Debentures or mail any notice
of redemption during the continuance of a Default in payment of interest on the Debentures. If any
Debentures called for redemption

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shall not be so paid upon surrender thereof for redemption on the
redemption date as provided in this Section 3.03, to the extent legally permissible, the
redemption price shall, until paid or duly provided for, bear interest from and including the
redemption date at the rate borne by the Debentures and such Debentures shall
remain convertible into Common Stock until the redemption price and interest shall have been
paid or duly provided for.

     Section 3.04. Repurchase at Option of Holders Upon a Fundamental Change. (a) If there shall
occur a Fundamental Change at any time prior to maturity of the Debentures, then each Holder of
Debentures shall have the right, at such Holder’s option, to require the Company to repurchase all
of such Holder’s Debentures, or any portion thereof that is a multiple of $1,000 principal amount,
on a date (the “Fundamental Change Repurchase Date”) specified by the Company, that is not less
than 20 calendar days nor more than 35 calendar days after the date of the Company Repurchase
Notice related to such Fundamental Change at a cash repurchase price equal to 100% of the principal
amount of the Debentures being repurchased, plus accrued and unpaid interest to, but excluding, the
Fundamental Change Repurchase Date, subject to the satisfaction by the Holder of the requirements
set forth in Section 3.04(c); provided that if such Fundamental Change Repurchase Date falls after
a Record Date and on or prior to the corresponding interest payment date, then the interest payable
on such interest payment date shall be paid on the Fundamental Change Repurchase Date to the
Holders of record of the Debentures on the applicable Record Date instead of the Holders
surrendering the Debentures for repurchase on such date.

     (b) On or before the fifth Business Day after the occurrence of a Fundamental Change, the
Company shall mail or cause to be mailed to all Holders of record of the Debentures on the date of
the Fundamental Change at their addresses shown in the Register (and to beneficial owners of the
Debentures as required by applicable law) a Company Repurchase Notice as set forth in Section 3.06
with respect to such Fundamental Change. The Company shall also deliver a copy of the Company
Repurchase Notice to the Trustee and the Paying Agent at such time as it is mailed to Holders of
Debentures.

     No failure of the Company to give the foregoing notices and no defect therein shall limit the
repurchase rights of Holders of Debentures or affect the validity of the proceedings for the
repurchase of the Debentures pursuant to this Section 3.04.

     (c) For Debentures to be repurchased at the option of the Holder, the Holder must deliver to
the Paying Agent, prior to 5:00 p.m., New York City time, on the Business Day immediately preceding
the Fundamental Change Repurchase Date, (i) a written notice of repurchase (the “Repurchase
Notice”) in the form set forth on the reverse of the Debentures duly completed (if the Debentures
are certificated) or compliance with applicable Depositary procedures (if the Debentures are
represented by a Global Debenture) together with (ii) such

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Debentures duly endorsed for transfer
(if the Debentures are certificated) or book-entry transfer of such Debentures (if the Debentures
are represented by a Global Debenture). The delivery of such Debentures to the Paying Agent with,
or at any time after delivery of, the Repurchase Notice (together with all necessary
endorsements) at the office of the Paying Agent shall be a condition to payment by the Company
to the Holder of the repurchase price therefor; provided that such repurchase price shall be so
paid pursuant to this Section 3.04 only if the Debentures so delivered to the Paying Agent shall
conform in all respects to the description thereof in the Repurchase Notice. All questions as to
the validity, eligibility (including time of receipt) and acceptance of any Debentures for
repurchase shall be determined by the Company, whose determination shall be final and binding
absent manifest error.

     (d) The Company shall repurchase from the Holder thereof, pursuant to this Section 3.04, a
portion of a Debenture, if the principal amount of such portion is $1,000 or a whole multiple of
$1,000. Provisions of this Indenture that apply to the repurchase of all of a Debenture also apply
to the repurchase of such portion of such Debenture.

     (e) The Paying Agent shall promptly notify the Company of the receipt by it of any Repurchase
Notice or written notice of withdrawal thereof.

     Any repurchase by the Company contemplated pursuant to the provisions of this Section 3.04
shall be consummated by the delivery of the consideration to be received by the Holder promptly
following the later of the Fundamental Change Repurchase Date and the time of the book-entry
transfer or delivery of the Debentures.

     Section 3.05. Repurchase of Debentures by the Company at the Option of Holders. (a) Each
Holder of Debentures shall have the right, at such Holder’s option, to require the Company to
repurchase all of such Holder’s Debentures, or any portion thereof that is a multiple of $1,000
principal amount, on August 1, 2017 and August 1, 2022 (each, a “Repurchase Date”), at a repurchase
price of 100% of the principal amount of the Debentures being repurchased, plus accrued and unpaid
interest to, but excluding, the Repurchase Date, provided that if such Repurchase Date falls after
a Record Date and on or prior to the corresponding interest payment date, then the interest payable
on such interest payment date shall be paid on the Repurchase Date to the Holders of record of the
Debentures on the applicable Record Date instead of the Holders surrendering the Debentures for
repurchase on such date.

     (b) On or before the twenty-fifth Business Day prior to each Repurchase Date, the Company
shall mail or cause to be mailed to all Holders of record on such date (and to beneficial owners as
required by applicable law) at their addresses shown in the Register (and to beneficial owners as
required by applicable law) a Company Repurchase Notice as set forth in Section 3.06. The Company
shall also deliver a copy of the Company Repurchase Notice to the

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Trustee and the Paying Agent at
such time as it is mailed to Holders of Debentures.

     No failure of the Company to give the foregoing notices and no defect therein shall limit the
repurchase rights of Holders of Debentures or affect the validity of the proceedings for the
repurchase of the Debentures pursuant to this Section 3.05.

     (c) For Debentures to be so repurchased at the option of the Holder, the Holder must deliver
to the Paying Agent, at any time during the period beginning at 9:00 a.m., New York City time, on
the date that is 20 Business Days prior to the applicable Repurchase Date and ending at 5:00 p.m.,
New York City time, on the applicable Repurchase Date, (i) a Repurchase Notice in the form set
forth on the reverse of the Debentures duly completed (if the Debentures are certificated) or
compliance with applicable Depositary procedures (if the Debentures are represented by a Global
Debenture) together with (ii) such Debentures duly endorsed for transfer (if the Debentures are
certificated) or book-entry transfer of such Debentures (if the Debentures are represented by a
Global Debenture). The delivery of such Debentures to the Paying Agent with, or at any time after
delivery of, the Repurchase Notice (together with all necessary endorsements) at the office of the
Paying Agent shall be a condition to the payment by the Company to the Holder of the repurchase
price therefor; provided that such repurchase price shall be so paid pursuant to this Section 3.05
only if the Debentures so delivered to the Paying Agent shall conform in all respects to the
description thereof in the Repurchase Notice. All questions as to the validity, eligibility
(including time of receipt) and acceptance of any Debentures for repurchase shall be determined by
the Company, whose determination shall be final and binding absent manifest error.

     (d) The Company shall repurchase from the Holder thereof, pursuant to this Section 3.05, a
portion of a Debenture, if the principal amount of such portion is $1,000 or a whole multiple of
$1,000. Provisions of this Indenture that apply to the repurchase of all of a Debenture also apply
to the repurchase of such portion of such Debentures.

     (e) The Paying Agent shall promptly notify the Company of the receipt by it of any Repurchase
Notice or written notice of withdrawal thereof.

     Any repurchase by the Company contemplated pursuant to the provisions of this Section 3.05
shall be consummated by the delivery of the consideration to be received by the Holder promptly
following the later of the Repurchase Date and the time of the book-entry transfer or delivery of
the Debentures.

     Section 3.06. Company Repurchase Notice; Tender Offer Compliance. (a) In connection with any
repurchase of Debentures, the Company shall, in the case of a Fundamental Change, on or before the
fifth calendar day after the Effective Date of such Fundamental Change or, no less than 25 Business
Days

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prior to each Repurchase Date, give notice to Holders (with a copy to the Trustee) setting
forth information specified in this Section 3.06 (in either case, the “Company Repurchase
Notice”).

     Each Company Repurchase Notice shall:

     (1) state the repurchase price and the Fundamental Change Repurchase Date or the Repurchase
Date to which the Company Repurchase Notice relates;

     (2) state, if applicable, the circumstances constituting the Fundamental Change;

     (3) state that the repurchase price will be paid in cash;

     (4) state that Holders must exercise their right to elect repurchase by 5:00 p.m., New York
City time, on the Fundamental Change Repurchase Date or Repurchase Date, as the case may be;

     (5) include a form of Repurchase Notice;

     (6) state the name and address of the Paying Agent;

     (7) state that Debentures must be surrendered to the Paying Agent to collect the repurchase
price;

     (8) state that a Holder may withdraw its Repurchase Notice at any time prior to 5:00 p.m., New
York City time, on the Fundamental Change Repurchase Date or the Repurchase Date, as the case may
be, by delivering a valid written notice of withdrawal in accordance with Section 3.07;

     (9) state whether the Debentures are then convertible, the then applicable Conversion Rate,
including, in the case of the occurrence of a Fundamental Change, expected changes, if any, in the
Conversion Rate resulting from such Fundamental Change transaction and expected changes in the
cash, shares or other property deliverable upon conversion of the Debentures as a result of the
occurrence of the Fundamental Change;

     (10) that Debentures as to which a Repurchase Notice has been given may be converted only if
the Repurchase Notice is withdrawn in accordance with the terms of this Indenture;

     (11) state the amount of interest accrued and unpaid per $1,000 principal amount of Debentures
to, but excluding, the Fundamental Change Repurchase Date and Repurchase Date, as the case may be;
and

     (12) state the CUSIP number of the Debentures.

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A Company Repurchase Notice may be given by the Company or, at the Company’s request, the Trustee
shall give such Company Repurchase Notice in the Company’s name and at the Company’s expense;
provided that the text of the Company Repurchase Notice shall be prepared by the Company.

     (b) The Company will, to the extent applicable, comply with the provisions of Rule 13e-4 and
Rule 14e-1 (or any successor provision) under the Exchange Act that may be applicable at the time
of the repurchase of the Debentures, file the related Schedule TO (or any successor schedule, form
or report) under the Exchange Act required in connection with any offer by us to repurchase the
Debentures and comply with all other federal and state securities laws in connection with the
repurchase of the Debentures.

     Section 3.07. Effect of Repurchase Notice; Withdrawal. Upon receipt by the Paying Agent of
the Repurchase Notice specified in Section 3.04 or Section 3.05, the Holder of the Debentures in
respect of which such Repurchase Notice was given shall (unless such Repurchase Notice is validly
withdrawn in accordance with the following paragraph) thereafter be entitled to receive solely the
repurchase price with respect to such Debentures. Such repurchase price shall be paid to such
Holder, subject to receipt of funds and/or the Debentures by the Paying Agent, promptly following
the later of (x) the Fundamental Change Repurchase Date or the Repurchase Date with respect to such
Debentures (provided the Holder has satisfied the conditions in Section 3.04 or Section 3.05) and
(y) the time of book-entry transfer or delivery of such Debentures to the Paying Agent by the
Holder thereof in the manner required by Section 3.04 or Section 3.05. The Debentures in respect
of which a Repurchase Notice has been given by the Holder thereof may not be converted pursuant to
Article 10 hereof on or after the date of the delivery of such Repurchase Notice unless such
Repurchase Notice has first been validly withdrawn.

     A Repurchase Notice may be withdrawn by means of a written notice of withdrawal delivered to
the office of the Paying Agent in accordance with the Repurchase Notice at any time prior to 5:00
p.m., New York City time, on the Fundamental Change Repurchase Date or Repurchase Date, as the case
may be, specifying:

     (a) the certificate number, if any, of the Debentures in respect of which such notice of
withdrawal is being submitted,

     (b) the principal amount of the Debentures with respect to which such notice of withdrawal is
being submitted, and

     (c) the principal amount, if any, of such Debentures which remains subject to the original
Repurchase Notice and which has been or will be delivered for repurchase by the Company.

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     If a Repurchase Notice is properly withdrawn, the Company shall not be obligated to repurchase
the Debentures listed in such Repurchase Notice.

     Section 3.08. Deposit of Repurchase Price. Prior to 11:00 a.m., New York City time, on the
first Business Day after a Fundamental Change Repurchase Date and on the first Business Day after
each Repurchase Date, the
Company shall deposit with the Paying Agent or, if the Company is acting as the Paying Agent,
shall segregate and hold in trust as provided in Section 6.04, an amount of cash sufficient to pay
the aggregate repurchase price of all the Debentures or portions thereof that are to be repurchased
as of the Fundamental Change Repurchase Date or the applicable Repurchase Date, as the case may be.

     If on the Business Day immediately following the Fundamental Change Repurchase Date or a
Repurchase Date the Paying Agent holds cash sufficient to pay the repurchase price and related
accrued interest of the Debentures that Holders have elected to require the Company to repurchase
in accordance with Section 3.04 or 3.05, as the case may be, then, on the Fundamental Change
Repurchase Date or the applicable Repurchase Date, as the case may be, such Debentures will cease
to be outstanding, interest will cease to accrue and all other rights of the Holders of such
Debentures will terminate, other than the right to receive the repurchase price and any accrued
interest due upon delivery or book-entry transfer of the Debentures. This will be the case whether
or not book-entry transfer of the Debentures has been made or the Debentures has been delivered to
the Paying Agent.

     Section 3.09. Debentures Repurchased in Part. Upon presentation of any Debentures
repurchased only in part, the Company shall execute and the Trustee shall authenticate and make
available for delivery to the Holder thereof, at the expense of the Company, a new Debenture or
Debentures, of any authorized denomination, in aggregate principal amount equal to the
unrepurchased portion of the Debentures presented.

ARTICLE 4

Covenants

     Section 4.01. Payment of Debentures. The Company shall promptly pay the principal of and
interest on the Debentures on the dates and in the manner provided in the Debentures and in this
Indenture. Principal and interest shall be considered paid on the date due if on such date the
Trustee or the Paying Agent holds in accordance with this Indenture money sufficient to pay all
principal and interest then due and the Trustee or the Paying Agent, as the case may be, is not
prohibited from paying such money to the Debentureholders on that date pursuant to the terms of
this Indenture.

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     The Company shall pay interest on overdue principal at the rate specified therefor in the
Debentures, and it shall pay interest on overdue installments of interest at the same rate to the
extent lawful.

     Section 4.02. Maintenance of Office or Agency. The Company will maintain an office or agency
in the United States where the Debentures may be surrendered for registration of transfer or
exchange or for presentation for payment or for conversion, redemption or repurchase and where
notices and
demands to or upon the Company in respect of the Debentures and this Indenture may be served.
As of the date of this Indenture, such office is located at the Corporate Trust Office and, at any
other time, at such other address as the Trustee may designate from time to time by notice to the
Company. The Company will give prompt written notice to the Trustee of the location, and any
change in the location, of such office or agency not designated or appointed by the Trustee. If at
any time the Company shall fail to maintain any such required office or agency or shall fail to
furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands
may be made or served at the Corporate Trust Office.

     The Company may also from time to time designate co-registrars and one or more offices or
agencies where the Debentures may be presented or surrendered for any or all such purposes and may
from time to time rescind such designations. The Company will give prompt written notice to the
Trustee of any such designation or rescission and of any change in the location of any such other
office or agency.

     Section 4.03. Rule 144A Information. The Company covenants and agrees that it shall, during
any period in which it is not subject to Section 13 or 15(d) under the Exchange Act, make available
to any holder or beneficial holder of Debentures or any Common Stock issued upon conversion thereof
which continue to be Restricted Securities and any prospective purchaser of such Debentures or such
Common Stock designated by such holder or beneficial holder, the information required pursuant to
Rule 144A(d)(4) under the Securities Act upon the request of any holder or beneficial holder of the
such Debentures or such Common Stock, all to the extent required to enable such holder or
beneficial holder to sell its Debentures or Common Stock without registration under the Securities
Act within the limitation of the exemption provided by Rule 144A.

     Section 4.04. Existence. Except in compliance with Article 5, the Company will do or cause
to be done all things necessary to preserve and keep in full force and effect its existence and
rights (charter and statutory); provided that the Company shall not be required to preserve any
such right if the Company shall determine that the preservation thereof is no longer desirable in
the conduct of the business of the Company and that the loss thereof is not disadvantageous in any
material respect to the Holders of Debentures.

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     Section 4.05. Payment of Taxes and Other Claims. The Company will pay or discharge, or cause
to be paid or discharged, before the same may become delinquent, (i) all taxes, assessments and
governmental charges levied or imposed upon the Company or any Significant Subsidiary or upon the
income, profits or property of the Company or any Significant Subsidiary and (ii) all claims for
labor, materials and supplies which, if unpaid, might by law become a lien or charge upon the
property of the Company or any Significant Subsidiary; provided that the Company shall not be
required to pay or discharge or cause to be paid or discharged any such tax, assessment, charge or
claim (A) if the failure to do so
will not, in the aggregate, have a material adverse impact on the Company, or (B) if the
amount, applicability or validity is being contested in good faith by appropriate proceedings.

     Section 4.06. Compliance Certificate. The Company shall deliver to the Trustee within 120
days after the end of each fiscal year of the Company an Officers’ Certificate stating that a
review of the Company’s activities during the preceding fiscal year has been made under the
supervision of the signing Officers with a view to determining whether the Company has kept,
observed, performed and fulfilled its obligations under this Indenture and further stating, as to
each such Officer signing such certificate, whether to the best of such Officer’s knowledge the
Company during such preceding fiscal year has kept, observed, performed and fulfilled each and
every such covenant contained in this Indenture and that in the course of the performance by the
signers of their duties as Officers of the Company they would normally have knowledge of any
Default and whether or not the signers know of any Default that occurred during such period. If
they do know of any Default, the certificate shall describe the Default, its status and what action
the Company is taking or proposes to take with respect thereto. The Company also shall comply with
Section 314(a)(4) of the TIA.

     Section 4.07. Further Instruments and Acts. Upon request of the Trustee, the Company shall
execute and deliver such further instruments and do such further acts as may be reasonably
necessary or proper to carry out more effectively the purpose of this Indenture.

     Section 4.08. Additional Interest Notice. If the Company is required to pay Additional
Interest to Holders of Debentures pursuant to the Registration Rights Agreement, the Company will
provide written notice (“Additional Interest Notice”) to the Trustee of its obligation to pay
Additional Interest no later than three calendar days prior to the proposed payment date for
Additional Interest, and the Additional Interest Notice shall set forth the amount of Additional
Interest to be paid by the Company on such payment date. The Trustee shall not at any time be
under any duty or responsibility to any Holder of Debentures to determine the Additional Interest,
or with respect to the nature, extent or calculation of the amount of Additional Interest when
made, or with respect to the method employed in such calculation of the Additional Interest.

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     Section 4.09. Exchange Act Reports. The Company shall deliver to the Trustee, within fifteen
days after the Company is required to file the same with the SEC, copies of the Company’s annual
reports and of the information, documents and other reports (or copies of such portions of any of
the foregoing as the SEC may by rules and regulations prescribe) that the Company is required to
file with the SEC pursuant to Section 13 or Section 15(d) of the Exchange Act. Reports,
information and documents filed by the Company with the SEC via the EDGAR system will be deemed
filed with the Trustee for purposes of this Section 4.09 as of the time that such reports,
information and documents are filed via EDGAR.

ARTICLE 5

Successor Company

     Section 5.01. When Company May Merge or Transfer Assets. The Company shall not in a single
transaction or a series of related transactions, consolidate with or merge with or into any other
Person, or sell, convey, transfer or lease its property and assets substantially as an entirety to
any Person, unless:

     (a) either (i) the Company is the continuing corporation, or (ii) the resulting, surviving or
transferee person (if other than the Company) is a corporation or limited liability company
organized and existing under the laws of the United States, any state thereof or the District of
Columbia and such person assumes, by a supplemental indenture in a form reasonably satisfactory to
the Trustee, and a supplemental agreement, all of the Company’s obligations under the Debentures,
this Indenture and the Registration Rights Agreement (to the extent then operative);

     (b) immediately after giving effect to the transaction described above, no Default or Event of
Default, has occurred and is continuing; and

     (c) the Company has delivered to the Trustee the Officers’ Certificate and Opinion of Counsel,
if any, requested pursuant to this Indenture.

     Section 5.02. Successor to be Substituted. In case of any such consolidation, merger, sale,
conveyance, transfer or lease in which the Company is not the continuing corporation and upon the
assumption by the successor Person, by supplemental indenture, executed and delivered to the
Trustee and reasonably satisfactory in form and substance to the Trustee, of the due and punctual
payment of the principal of, and interest on all of the Debentures, and the due and punctual
performance and observance of all of the covenants and conditions of this Indenture to be performed
or satisfied by the Company, and by supplemental agreement, executed and delivered to the Trustee
and reasonably satisfactory in form and substance to the Trustee, of all of the obligations of the
Company under the Registration Rights Agreement (to the extent then operative), such successor
Person shall succeed to and be substituted for the Company, with

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the same effect as if it had been
named herein as a party hereto, and Global Industries, Ltd. shall be discharged from its
obligations under the Debentures, this Indenture and the Registration Rights Agreement. Such
successor Person thereupon may cause to be signed, and may issue the Debentures either in its own
name or in the name of Global Industries, Ltd.

     Upon the order of such successor Person instead of the Company and subject to all the terms,
conditions and limitations in this Indenture prescribed, the Trustee shall authenticate and shall
deliver, or cause to be authenticated and delivered, any Debentures that previously shall have been
signed and delivered by the officers of the Company to the Trustee for authentication, and any
Debentures that such successor Person thereafter shall cause to be signed and delivered to the
Trustee for that purpose. All the Debentures so issued shall in all respects have the same
legal rank and benefit under this Indenture as the Debentures theretofore or thereafter issued in
accordance with the terms of this Indenture as though all of such Debentures had been issued at the
date of the execution hereof. In the event of any such consolidation, merger, sale, conveyance,
transfer or lease, upon compliance with this Article 5 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 5 may be dissolved, wound up and liquidated at any time
thereafter and such Person shall be discharged from its liabilities as obligor and maker of the
Debentures and from its obligations under this Indenture.

     Section 5.03. Opinion of Counsel to be Given to Trustee. Prior to execution of any
supplemental indenture pursuant to this Article 5, the Trustee shall receive an Officers’
Certificate and an Opinion of Counsel as conclusive evidence that any such consolidation, merger,
sale, conveyance, transfer or lease and any such assumption complies with the provisions of this
Article 5.

ARTICLE 6

Defaults and Remedies

     Section 6.01. Events of Default. An “Event of Default” occurs if:

     (a) the Company defaults in any payment of interest on any Debenture when the same becomes due
and payable and such default continues for a period of 30 calendar days;

     (b) the Company defaults in the payment of the principal of any Debenture when the same
becomes due and payable, upon redemption or required repurchase, upon declaration of acceleration
or otherwise;

     (c) the Company fails to deliver cash and, if applicable, shares of Common Stock (including
any Additional Shares), or a combination of the foregoing, as required pursuant to Article 10 upon
the conversion of any

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Debentures and such failure continues for five days following the scheduled
settlement date for such conversion;

     (d) the Company fails to provide notice of the effective date of a Fundamental Change on a
timely basis as required in this Indenture;

     (e) the Company fails to comply with any term, covenant or agreement contained in the
Debentures or this Indenture (other than those referred to in (a), (b), (c) or (d) above) and
such failure continues for 60 days after the notice specified below;

     (f) a failure to pay principal when due (whether at stated maturity or otherwise) or a default
that results in the acceleration of maturity, of any Indebtedness of the Company or any Significant
Subsidiary in excess of $50 million or its foreign currency equivalent at the time, unless such
Indebtedness is discharged, or such acceleration is rescinded, stayed or annulled within a period
of 30 calendar days after the notice specified below;

     (g) the Company or any Significant Subsidiary pursuant to or within the meaning of any
Bankruptcy Law:

     (i) commences a voluntary case;

     (ii) consents to the entry of an order for relief against it in an involuntary case;

     (iii) consents to the appointment of a Custodian of it or for any substantial part of
its property;

     (iv) makes a general assignment for the benefit of its creditors; or

     (v) takes any comparable action under any foreign laws relating to insolvency; or

     (h) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that:

     (i) is for relief against the Company or any Significant Subsidiary in an involuntary
case;

     (ii) appoints a Custodian of the Company or any Significant Subsidiary or for any
substantial part of its property;

     (iii) orders the winding up or liquidation of the Company or any Significant
Subsidiary; or

     (iv) or any similar relief is granted under any foreign laws;

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and the order or decree remains unstayed and in effect for 60 days.

     The foregoing shall constitute Events of Default whatever the reason for any such Event of
Default and whether it is voluntary or involuntary or is 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.

     The term “Bankruptcy Law” means Title 11, United States Code, or any similar Federal or state
law for the relief of debtors. The term “Custodian”
means any receiver, trustee, assignee, liquidator, custodian or similar official under any
Bankruptcy Law.

     A Default under clause (e) or (f), above is not an Event of Default until the Trustee or the
Debentureholders of at least 25% in aggregate principal amount of the outstanding Debentures notify
the Company or the Company and the Trustee, respectively, of the Default and the Company does not
cure such Default within the time specified after receipt of such notice. Such notice must specify
the Default, demand that it be remedied and state that such notice is a “Notice of Default”.

     The Company shall deliver to the Trustee, promptly upon becoming aware of any Default, written
notice in the form of an Officers’ Certificate of any Default known to the Company, its status and
what action the Company is taking or proposes to take with respect thereto.

     Section 6.02. Acceleration. If an Event of Default (other than an Event of Default specified
in Section 6.01(g) or 6.01(h)) occurs and is continuing, the Trustee by notice to the Company, or
the Debentureholders of at least 25% in principal amount of the outstanding Debentures by notice to
the Company and the Trustee, may declare the principal of and accrued but unpaid interest on all
the Debentures to be due and payable. Upon such a declaration, such principal and interest shall
be due and payable immediately. If an Event of Default specified in Section 6.01(g) or 6.01(h)
occurs, the principal of and interest on all the Debentures shall ipso facto become and be
immediately due and payable without any declaration or other act on the part of the Trustee or any
Debentureholders. The Debentureholders of a majority in principal amount of the Debentures by
notice to the Trustee may rescind an acceleration and its consequences if the rescission would not
conflict with any judgment or decree and if (i) the Company has paid (or deposited with the
Trustee) all overdue interest and principal on all the Debentures, as well as paid interest upon
overdue interest to the extent that payment of such interest is lawful and paid to the Trustee any
amount due to it for the reasonable compensation, expenses, disbursements and advances of the
Trustee, its agents and its counsel, and (ii) all existing Events of Default have been cured or
waived except nonpayment of principal or interest that has become due solely because of
acceleration. No such rescission shall affect any subsequent Default or impair any right
consequent thereto.

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     Section 6.03. Other Remedies. If an Event of Default occurs and is continuing, the Trustee
may pursue any available remedy to collect the payment of principal of or interest on the
Debentures or to enforce the performance of any provision of the Debentures or this Indenture.

     The Trustee may maintain a proceeding even if it does not possess any of the Debentures or
does not produce any of them in the proceeding. A delay or omission by the Trustee or any
Debentureholder in exercising any right or remedy accruing upon an Event of Default shall not
impair the right or remedy or
constitute a waiver of or acquiescence in the Event of Default. No remedy is exclusive of any
other remedy. All available remedies are cumulative.

     Section 6.04. Waiver of Past Defaults. The Holders of a majority in principal amount of the
Debentures by notice to the Trustee may on behalf of the Holders of all the Debentures, waive any
past default or existing Event of Default and its consequences except (i) a default in the payment
of the principal of or interest on a Debenture when due, (ii) an Event of Default arising from the
failure to redeem or repurchase any Debenture when required pursuant to the terms of this
Indenture, (iii) an Event of Default arising from the failure of the Company to deliver Common
Stock (including any Additional Shares), cash and, if applicable shares of or a combination of the
foregoing, as applicable upon the conversion of any Debentures pursuant to the terms of this
Indenture or (iv) a default in respect of a provision that under Section 9.02 cannot be amended
without the consent of each Debentureholder affected. When an Event of Default is waived, it is
deemed cured, but no such waiver shall extend to any subsequent or other Event of Default or impair
any consequent right.

     Section 6.05. Control by Majority. The Debentureholders of a majority in aggregate principal
amount of the outstanding Debentures may direct the time, method and place of conducting any
proceeding for any remedy available to the Trustee or of exercising any trust or power conferred on
the Trustee. However, the Trustee may refuse to follow any direction that conflicts with law or
this Indenture or, subject to Section 7.01, that the Trustee determines is unduly prejudicial to
the rights of other Debentureholders or would involve the Trustee in personal liability; provided
that the Trustee may take any other action deemed proper by the Trustee that is not inconsistent
with such direction. Prior to taking any action hereunder, the Trustee shall be entitled to
indemnification satisfactory to it in its sole discretion against all losses and expenses caused by
taking or not taking such action.

     Section 6.06. Limitation on Suits. Except to enforce the right to receive payment of
principal, or interest when due, no Debentureholder may pursue any remedy with respect to this
Indenture or the Debentures unless:

     (a) the Debentureholder gives to the Trustee written notice stating that an Event of Default
is continuing;

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     (b) the Debentureholders of at least 25% in principal amount of the Debentures make a written
request to the Trustee to pursue the remedy;

     (c) such Debentureholder or Debentureholders offer to the Trustee reasonable security or
indemnity against any loss, liability or expense of the Trustee;

     (d) the Trustee does not comply with the request within 60 days after receipt of the request
and the offer of indemnity; and

     (e) the Debentureholders of a majority in principal amount of the Debentures do not give the
Trustee a direction inconsistent with the request.

     A Debentureholder may not use this Indenture to prejudice the rights of another
Debentureholder or to obtain a preference or priority over another Debentureholder.

     Notwithstanding any other provision of this Indenture and any provision of any Debentures, the
right of any Holder of any Debentures to receive payment of the principal of (including the
redemption price or repurchase price upon redemption or repurchase pursuant to Article 3) and
accrued interest on such Debentures, on or after the respective due dates expressed in such
Debentures or in the event of redemption or repurchase, or to institute suit for the enforcement of
any such payment on or after such respective dates against the Company shall not be impaired or
affected without the consent of such Holder.

     Anything contained in this Indenture or the Debentures to the contrary notwithstanding, the
Holder of any Debentures, without the consent of either the Trustee or the Holder of any other
Debentures, on its own behalf and for its own benefit, may enforce, and may institute and maintain
any proceeding suitable to enforce, its rights of conversion as provided herein.

     Section 6.07. Rights of Debentureholders to Receive Payment. Notwithstanding any other
provision of this Indenture, the right of any Debentureholder to receive payment of principal of
and interest on the Debentures held by such Debentureholder, on or after the respective due dates
expressed in the Debentures, or to bring suit for the enforcement of any such payment on or after
such respective dates, shall not be impaired or affected without the consent of such
Debentureholder.

     Section 6.08. Collection Suit by Trustee. If an Event of Default specified in Section
6.01(a) or 6.01(b) occurs and is continuing, the Trustee may recover judgment in its own name and
as trustee of an express trust against the Company for the whole amount then due and owing
(together with interest on any unpaid interest to the extent lawful) and the amounts provided for
in Section 7.07.

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     Section 6.09. Trustee May File Proofs of Claim. The Trustee may file such proofs of claim
and other papers or documents as may be necessary or advisable in order to have the claims of the
Trustee and the Debentureholders allowed in any judicial proceedings relative to the Company, their
creditors or their property and, unless prohibited by law or applicable regulations, may vote on
behalf of the Debentureholders in any election of a trustee in bankruptcy or other Person
performing similar functions, and any Custodian in any such judicial proceeding is hereby
authorized by each Debentureholder to make payments to the Trustee and, in the event that the
Trustee shall consent to the making of such payments directly to the Debentureholders, to pay to
the Trustee any amount due it for the reasonable compensation, expenses, disbursements and advances
of the
Trustee, its agents and its counsel, and any other amounts due the Trustee under Section
7.07.

     Section 6.10. Priorities. If the Trustee collects any money or property pursuant to this
Article 6, it shall pay out the money or property in the following order:

     FIRST: to the Trustee for amounts due under Section 7.07;

     SECOND: to Debentureholders for amounts due and unpaid on the Debentures for principal and
interest, ratably without preference or priority of any kind, according to the amounts due and
payable on the Debentures for principal and interest, respectively; and

     THIRD: to the Company.

     The Trustee may fix a record date and payment date for any payment to Debentureholders pursuant to
this Section. At least 15 days before such record date, the Trustee shall mail to each
Debentureholder and the Company a notice that states the record date, the payment date and amount
to be paid.

     Section 6.11. Undertaking for Costs. 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, a court in its discretion may require the filing by any party litigant in the suit of an
undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable
costs, including reasonable attorneys’ fees, against any party litigant in the suit, having due
regard to the merits and good faith of the claims or defenses made by the party litigant. This
Section does not apply to a suit by the Trustee, a suit by a Debentureholder pursuant to Section
6.07 or a suit by Debentureholders of more than 10% in principal amount of the Debentures or to any
suit instituted by any Holder of Debentures for the enforcement of the payment of the principal of
or interest on any Debentures on or after the due date expressed in such Debentures or to any suit
for the enforcement of the right to convert any Debentures in accordance with the provisions of
Article 10.

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     Section 6.12. Waiver of Stay, Extension or Usury Laws. The Company (to the extent it may
lawfully do so) shall not at any time insist upon, or plead, or in any manner whatsoever claim or
take the benefit or advantage of, any stay, extension or usury law wherever enacted, now or at any
time hereafter in force, which may affect the covenants or the performance of this Indenture; and
the Company (to the extent that it may lawfully do so) hereby expressly waives all benefit or
advantage of any such law, and shall not hinder, delay or impede the execution of any power herein
granted to the Trustee, but shall suffer and permit the execution of every such power as though no
such law had been enacted.

     Section 6.13. Alternative Remedy for Failure to Comply with Exchange Act Reporting
Obligations. Notwithstanding anything to the contrary in the other provisions of Article 6, if the
Company so elects, the sole remedy for an Event of Default relating to the failure to comply with
Section 4.09 and for any failure to comply with the requirements of Section 314(a)(1) of the Trust
Indenture Act, will for the 365 days after the occurrence of such an Event of Default consist
exclusively of the right to receive additional interest on the Debentures at an annual rate equal
to 0.25% of the principal amount of the Debentures for the first 90 days after the occurrence of
the Event of Default and 0.50% thereafter. In the event the Company does not elect to pay the
additional interest under this Section 6.13 upon the occurrence of an Event of Default covered by
this Section 6.13, the Debentures will be subject to acceleration as provided in Section 6.02.
Additional interest due under this Section 6.13 will be in addition to any Additional Interest
that may accrue under the Registration Rights Agreement and will be payable in the same manner as
Additional Interest accruing as a result of a registration default thereunder. Additional interest
under this Section 6.13 will accrue on all outstanding Debentures from and including the date on
which an Event of Default relating to a failure to comply with Section 4.09 first occurs to but
excluding the 365th day thereafter (or such earlier date on which the Event of Default shall have
been cured or waived). On such 365th day (or earlier, if the Event of Default is cured or waived
prior to such 365th day), such additional interest will cease to accrue and the Debentures will be
subject to acceleration as provided under Section 6.02 if the Event of Default is continuing.
This Section 6.13 will not affect the rights of Holders of Debentures in the event of the
occurrence of any other Event of Default and will have no effect on the rights of Holders of
Debentures under the Registration Rights Agreement.

ARTICLE 7

Trustee

     Section 7.01. Duties of Trustee. (a) If an Event of Default has occurred and is continuing,
the Trustee shall exercise the rights and powers vested in it by this Indenture and use the same
degree of care and skill in its exercise as a prudent Person would exercise or use under the
circumstances in the conduct of such Person’s own affairs.

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     (b) Except during the continuance of an Event of Default:

     (i) the Trustee need only perform such duties as are specifically set forth in this
Indenture and no implied covenants or obligations shall be read into this Indenture
against the Trustee; and

     (ii) in the absence of bad faith on its part, the Trustee may conclusively rely, as
to the truth of the statements and the correctness of the opinions expressed therein, upon
certificates or opinions furnished to the Trustee and conforming to the requirements of
this Indenture.
However, the Trustee shall examine the certificates and opinions to determine whether
or not they conform to the requirements of this Indenture.

     (c) The Trustee may not be relieved from liability for its own negligent action, its own
negligent failure to act or its own willful misconduct, except that:

     (i) this paragraph does not limit the effect of paragraph (b) of this Section;

     (ii) the Trustee shall not be liable for any error of judgment made in good faith by
a Responsible Officer unless it is proved that the Trustee was negligent in ascertaining
the pertinent facts; and

     (iii) the Trustee shall not be liable with respect to any action it takes or omits to
take in good faith in accordance with a direction received by it pursuant to Section
6.05.

     (d) Every provision of this Indenture that in any way relates to the Trustee is subject to
paragraphs (a), (b) and (c) of this Section.

     (e) The Trustee shall not be liable for interest on any money received by it except as the
Trustee may agree in writing with the Company.

     (f) Money held in trust by the Trustee need not be segregated from other funds except to the
extent required by law.

     (g) No provision of this Indenture shall require the Trustee to expend or risk its own funds
or otherwise incur financial liability in the performance of any of its duties hereunder or in the
exercise of any of its rights or powers, if it shall have reasonable grounds to believe that
repayment of such funds or adequate indemnity against such risk or liability is not reasonably
assured to it.

     (h) 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 and to the
provisions of the TIA.

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     Section 7.02. Rights of Trustee. (a) The Trustee may rely on any document believed by
it to be genuine and to have been signed or presented by the proper person. The Trustee need not
investigate any fact or matter stated in the document.

     (b) Before the Trustee acts or refrains from acting, it may require an Officers’ Certificate
or an Opinion of Counsel. The Trustee shall not be liable for any action it takes or omits to take
in good faith in reliance on the Officers’ Certificate or Opinion of Counsel.

     (c) The Trustee may act through agents and shall not be responsible for the misconduct or
negligence of any agent appointed with due care.

     (d) The Trustee shall not be liable for any action it takes or omits to take in good faith
which it believes to be authorized or within its rights or powers.

     (e) The Trustee may consult with counsel, and the advice or opinion of counsel with respect to
legal matters relating to this Indenture and the Debentures shall be full and complete
authorization and protection from liability in respect to any action taken, omitted or suffered by
it hereunder in good faith and in accordance with the advice or opinion of such counsel.

     (f) 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, consent,
order, approval, bond, note, debenture, 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.

     (g) The Trustee shall be under no obligation to exercise any of the rights or powers vested in
it by this Indenture at the request, order or direction of any of the Debentureholders pursuant to
the provisions of this Indenture, unless such Debentureholders shall have offered to the Trustee
reasonable security or indemnity against the costs, expenses and liabilities which may be incurred
therein or thereby.

     Section 7.03. Individual Rights of Trustee. The Trustee in its individual or any other
capacity may become the owner or pledgee of Debentures and may otherwise deal with the Company or
its Affiliates with the same rights it would have if it were not Trustee. Any Conversion Agent,
Paying Agent, Registrar or co-paying agent may do the same with like rights. However, the Trustee
must comply with Sections 7.10 and 7.11.

     Section 7.04. Trustee’s Disclaimer. The Trustee shall not be responsible for and makes no
representation as to the validity or adequacy of this Indenture or the Debentures, it shall not be
accountable for the Company’s use of the proceeds from the Debentures, and it shall not be
responsible for any statement of the Company in this Indenture or in any document issued in
connection with the sale

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of the Debentures or in the Debentures other than the Trustee’s certificate of authentication.

     Section 7.05. Notice of Defaults. (a) The Trustee shall not be deemed to have notice of any
Default, other than a payment default, unless a Responsible Officer shall have been advised in
writing that a Default has occurred. No duty imposed upon the Trustee in this Indenture shall be
applicable with respect to any Default of which the Trustee is not deemed to have notice.

     (b) If a Default occurs and is continuing and if it is known to the Trustee, the Trustee shall
mail to each Debentureholder notice of the Default within the earlier of 90 days after it occurs or
30 days after it is known to a Responsible Officer or written notice of it is received by the
Trustee. Except in the case of a Default in payment of principal or interest on any Debenture
(including payments pursuant to the redemption or repurchase provisions of such Debenture), the
Trustee may withhold notice if and so long as the Trustee in good faith determines that withholding
notice is in the interests of the Debentureholders.

     Section 7.06. Reports by Trustee to Debentureholders. As promptly as practicable after each
August 1, beginning with the August 1 following the first anniversary of the date of this
Indenture, and in any event prior to December 31 in each subsequent year, the Trustee shall, to the
extent that any of the events described in TIA § 313(a) occurred within the previous twelve months,
but not otherwise, mail to each Debentureholder a brief report dated as of August 1 that complies
with Section 313(a) of the TIA. The Trustee shall also comply with Section 313(b) of the TIA.

     A copy of each report at the time of its mailing to Debentureholders shall be filed with the
SEC and each stock exchange (if any) on which the Debentures are listed. The Company agrees to
promptly notify the Trustee whenever the Debentures become listed on any stock exchange and of any
delisting thereof.

     Section 7.07. Compensation and Indemnity. The Company shall pay to the Trustee from time to
time such compensation as the Company and the Trustee shall from time to time agree in writing.
The Trustee’s compensation shall not be limited by any law on compensation of a trustee of an
express trust. The Company shall reimburse the Trustee upon request for all reasonable
out-of-pocket expenses incurred or made by it, including costs of collection, in addition to the
compensation for its services. Such expenses shall include the reasonable compensation and
expenses, disbursements and advances of the Trustee’s agents, counsel, accountants and experts.
The Company shall indemnify the Trustee, and hold it harmless, against any and all loss, liability
or expense (including reasonable attorneys’ fees) incurred by or in connection with the offer and
sale of the Debentures or the administration of this trust and the performance of its duties
hereunder. The Trustee shall notify the Company of any claim for which it may seek indemnity
promptly upon obtaining actual knowledge thereof; provided that any failure so to notify the
Company shall not relieve the Company of its

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indemnity obligations hereunder. The Company shall defend the claim and the indemnified party
shall provide reasonable cooperation at the Company’s expense in the defense. Such indemnified
parties may have separate counsel and the Company shall pay the fees and expenses of such counsel;
provided that the Company shall not be required to pay such fees and expenses if it assumes such
indemnified parties’ defense and, in such indemnified parties’ reasonable judgment, there is no
conflict of interest between the Company and such parties in connection with such defense. The
Company need not reimburse any expense or indemnify against any loss, liability or expense incurred
by an indemnified party through such party’s own willful misconduct and negligence.

     To secure the Company’s payment obligations in this Section, the Trustee shall have a lien
prior to the Debentures on all money or property held or collected by the Trustee other than money
or property held in trust to pay principal of and interest and any liquidated damages on particular
Debentures.

     The Company’s payment obligations pursuant to this Section shall survive the satisfaction or
discharge of this Indenture, any rejection or termination of this Indenture under any bankruptcy
law or the resignation or removal of the Trustee. When the Trustee incurs expenses after the
occurrence of an Event of Default specified in Section 6.01(g) or 6.01(h) with respect to the
Company, the expenses are intended to constitute expenses of administration under the Bankruptcy
Law.

     Section 7.08. Replacement of Trustee. The Trustee may resign at any time by so notifying the
Company. The Holders of a majority in principal amount of the Debentures may remove the Trustee by
so notifying the Trustee and may appoint a successor Trustee. The Company shall remove the Trustee
if:

     (a) the Trustee fails to comply with Section 7.10;

     (b) the Trustee is adjudged bankrupt or insolvent;

     (c) a receiver or other public officer takes charge of the Trustee or its property; or

     (d) the Trustee otherwise becomes incapable of acting.

     If the Trustee resigns, is removed by the Company or by the Holders of a majority in principal
amount of the Debentures and such Debentureholders do not reasonably promptly appoint a successor
Trustee, or if a vacancy exists in the office of Trustee for any reason (the Trustee in such event
being referred to herein as the retiring Trustee), the Company shall promptly appoint a successor
Trustee.

     A successor Trustee shall deliver a written acceptance of its appointment to the retiring
Trustee and to the Company. Thereupon the resignation or removal of the retiring Trustee shall
become effective, and the successor Trustee shall have all the rights, powers and duties of the
Trustee under this Indenture. The

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successor Trustee shall mail a notice of its succession to Debentureholders. The retiring
Trustee shall promptly transfer all property held by it as Trustee to the successor Trustee,
subject to the lien provided for in Section 7.07.

     If a successor Trustee does not take office within 60 days after the retiring Trustee resigns
or is removed, the retiring Trustee or the Holders of 10% in principal amount of the Debentures may
petition any court of competent jurisdiction for the appointment of a successor Trustee.

     If the Trustee fails to comply with Section 7.10, any Debentureholder may petition any court
of competent jurisdiction for the removal of the Trustee and the appointment of a successor
Trustee.

     Notwithstanding the replacement of the Trustee pursuant to this Section, the Company’s
obligations under Section 7.07 shall continue for the benefit of the retiring Trustee.

     Section 7.09. Successor Trustee by Merger. If the Trustee consolidates with, merges or
converts into, or transfers all or substantially all of its corporate trust business or assets to,
another corporation or banking association, the resulting, surviving or transferee corporation
without any further act shall be the successor Trustee.

     In case at the time such successor or successors by merger, conversion or consolidation to the
Trustee shall succeed to the trusts created by this Indenture any of the Debentures shall have been
authenticated but not delivered, any such successor to the Trustee may adopt the certificate of
authentication of any predecessor trustee, and deliver such Debentures so authenticated; and in
case at that time any of the Debentures shall not have been authenticated, any successor to the
Trustee may authenticate such Debentures either in the name of any predecessor hereunder or in the
name of the successor to the Trustee; and in all such cases such certificates shall have the full
force which it is anywhere in the Debentures or in this Indenture provided that the certificate of
the Trustee shall have.

     Section 7.10. Eligibility; Disqualification. The Trustee shall at all times satisfy the
requirements of TIA § 310(a). The Trustee shall have a combined capital and surplus of at least
$100,000,000 as set forth in its most recent published annual report of condition. The Trustee
shall comply with TIA § 310(b); provided that there shall be excluded from the operation of TIA §
310(b)(1) any indenture or indentures under which other securities or certificates of interest or
participation in other securities of the Company are outstanding if the requirements for such
exclusion set forth in TIA § 310(b)(1) are met.

     Section 7.11. Preferential Collection of Claims Against Company. The Trustee shall comply
with TIA § 311(a), excluding any creditor relationship listed

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in TIA § 311(b). A Trustee who has resigned or been removed shall be subject to TIA § 311(a)
to the extent indicated.

ARTICLE 8

Discharge of Indenture

     Section 8.01. Discharge of Liability on Debentures. (a) When (i) the Company delivers to the
Trustee all outstanding Debentures (other than Debentures replaced pursuant to Section 2.09) for
cancellation or (ii) all outstanding Debentures have become due and payable, whether at maturity or
as a result of the mailing of a notice of redemption or upon a repurchase pursuant to Article 3
hereof, and the Company irrevocably deposits with the Trustee money sufficient to pay at maturity
or upon redemption or repurchase all outstanding Debentures, including interest thereon to maturity
or such redemption or repurchase date (other than Debentures replaced pursuant to Section 2.09),
and any cash or shares of Common Stock, if applicable, or other property due in respect of
converted Debentures, and if in each such case the Company pays all other sums payable hereunder by
the Company, then this Indenture shall, subject to Section 8.01(b), cease to be of further effect.
The Trustee shall acknowledge satisfaction and discharge of this Indenture on demand of the
Company accompanied by an Officers’ Certificate and an Opinion of Counsel and at the cost and
expense of the Company.

     (b) Notwithstanding clause (a) above, the Company’s obligations in Sections 2.05, 2.06,
2.07, 2.08, 2.09, 2.10, 7.07, 7.08 and in this Article 8 shall survive until the Debentures
have been paid in full. Thereafter, the Company’s obligations in Sections 7.07, 8.03 and 8.04
shall survive.

     Section 8.02. Application of Trust Money. The Trustee shall hold in trust money and any
shares of Common Stock or other property due in respect of converted Debentures deposited with it
pursuant to this Article 8. It shall apply the deposited money through the Paying Agent and in
accordance with this Indenture to the payment of principal of and interest on the Debentures or, in
the case of any shares of Common Stock or other property due in respect of converted Debentures, in
accordance with this Indenture in relation to the conversion of Debentures pursuant to the terms
hereof.

     Section 8.03. Repayment to Company. The Trustee and the Paying Agent shall promptly turn
over to the Company upon request any excess money or securities held by them at any time.

     Subject to any applicable abandoned property law, the Trustee and the Paying Agent shall pay
to the Company upon written request any money held by them for the payment of principal or interest
and any shares of Common Stock or other property due in respect of converted Debentures that
remains unclaimed for

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two years, and, thereafter, Debentureholders entitled to the money and/or securities must look
to the Company for payment as general creditors.

     Section 8.04. Reinstatement. If the Trustee or Paying Agent is unable to apply any money or
to deliver any shares of Common Stock or other property due in respect of converted Debentures in
accordance with this Article 8 by reason of any legal proceeding or by reason of any order or
judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting
such application, the Company’s obligations under this Indenture and the Debentures shall be
revived and reinstated as though no deposit had occurred pursuant to this Article 8 until such
time as the Trustee or Paying Agent is permitted to apply all such money and any shares of Common
Stock or other property due in respect of converted Debentures in accordance with this Article 8;
provided that, if the Company has made any payment of interest on or principal of any Debentures
because of the reinstatement of its obligations, the Company shall be subrogated to the rights of
the Debentureholders of such Debentures to receive such payment from the money held by the Trustee
or Paying Agent.

ARTICLE 9

Amendments

     Section 9.01. Without Consent of Debentureholders. The Company and the Trustee may amend
this Indenture or the Debentures without notice to or consent of any Debentureholder:

     (a) to provide for conversion rights of Holders of the Debentures and the Company’s repurchase
obligations in connection with a Fundamental Change or in the event of any reclassification of
Common Stock, merger or consolidation, or sale, conveyance, transfer or lease of the Company’s
property and assets substantially as an entirety;

     (b) to secure the Debentures

     (c) to eliminate the Company’s right to elect pursuant to Section 10.14 to satisfy its
conversion obligations entirely in shares of Common Stock;

     (d) to comply with Article 5 of this Indenture;

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

     (f) to cure any ambiguity or correct or supplement any inconsistency or defective provision
contained in this Indenture; provided that such modification or amendment does not adversely affect
the interests of the Holders of the Debentures in any material respect; provided, further, that any
amendment made solely to conform the provisions of this Indenture to the description of the

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Debentures contained in the Offering Memorandum dated as of July 23, 2007 of the Company
relating to the Debentures will not be deemed to adversely affect the interests of the Holders of
the Debentures;

     (g) to make any provision with respect to matters or questions arising under this Indenture
that the Company may deem necessary or desirable and that shall not be inconsistent with provisions
of this Indenture; provided that such change or modification does not, in the good faith opinion of
the Board of Directors, adversely affect the interests of the Holders of the Debentures in any
material respect;

     (h) to increase the Conversion Rate;

     (i) to comply with any requirements of the SEC in connection with qualifying, or maintaining
the qualification of, this Indenture under the TIA.

     (j) to add guarantees of obligations with respect to the Debentures;

     (k) to make any changes or modifications necessary in connection with the registration of the
Debentures under the Securities Act as contemplated in the Registration Rights Agreement; provided
that such change or modification does not adversely affect the interests of the Holders of the
Debentures in any material respect; or

     (l) to provide for a successor Trustee.

     After an amendment under this Section becomes effective, the Company shall mail to
Debentureholders a notice briefly describing such amendment. The failure to give such notice to
all Debentureholders, or any defect therein, shall not impair or affect the validity of an
amendment under this Section.

     Section 9.02. With Consent of Debentureholders. The Company and the Trustee may amend this
Indenture or the Debentures with the written consent (including any electronic consent given in
accordance with applicable procedures of the Depositary) or affirmative vote of the Holders of at
least a majority in aggregate principal amount of the Debentures then outstanding. However,
without the consent or affirmative vote of each Holder of an outstanding Debenture affected, an
amendment may not:

     (a) extend the maturity of any Debenture;

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

     (c) reduce the principal amount of any Debenture;

     (d) reduce any amount payable upon redemption or repurchase of any Debenture;

49

 

     (e) impair the right of a Holder to institute suit for payment of any Debentures;

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

     (g) change the obligation of the Company to redeem any Debenture called for redemption on a
redemption date in a manner adverse to the Holders;

     (h) change the obligation of the Company to repurchase any Debenture at the option of the
Holder or upon a Fundamental Change in a manner adverse to the Holders;

     (i) affect the right of a Holder to convert any Debentures into cash, and, if applicable,
shares of Common Stock or reduce the number of shares of Common Stock (or to the extent otherwise
applicable, other property, including cash, receivable upon conversion pursuant to the terms of
this Indenture), except as otherwise permitted pursuant to this Indenture; or

     (j) reduce the percentage of Debentures required for consent to any amendment, or waiver of
any provision, of the indenture that requires the consent of each affected Holder.

     It shall not be necessary for the consent of the Debentureholders under this Section to
approve the particular form of any proposed amendment, but it shall be sufficient if such consent
approves the substance thereof.

     After an amendment under this Section becomes effective, the Company shall mail to
Debentureholders a notice briefly describing such amendment. The failure to give such notice to
all Debentureholders, or any defect therein, shall not impair or affect the validity of an
amendment under this Section.

     Section 9.03. Compliance with Trust Indenture Act. Every amendment to this Indenture or the
Debentures shall comply with the TIA as then in effect.

     Section 9.04. Revocation and Effect of Consents and Waivers. A consent to an amendment or a
waiver by a Debentureholder of a Debenture shall bind the Debentureholder and every subsequent
Debentureholder of that Debenture or portion of the Debenture that evidences the same debt as the
consenting Debentureholder’s Debenture, even if notation of the consent or waiver is not made on
the Debenture. However, any such Debentureholder or subsequent Debentureholder may revoke the
consent or waiver as to such Debentureholder’s Debenture or portion of the Debenture if the Trustee
receives the notice of revocation before the date the amendment or waiver becomes effective. After
an amendment or waiver becomes effective, it shall bind every Debentureholder. An amendment or
waiver becomes effective once both (i) the requisite number of

50

 

consents have been received by the Company or the Trustee and (ii) such amendment or waiver
has been executed by the Company and the Trustee.

     The Company may, but shall not be obligated to, fix a record date for the purpose of
determining the Debentureholders entitled to give their consent or take any other action described
above or required or permitted to be taken pursuant to this Indenture. If a record date is fixed,
then notwithstanding the immediately preceding paragraph, those Persons who were Debentureholders
at such record date (or their duly designated proxies), and only those Persons, shall be entitled
to give such consent or to revoke any consent previously given or to take any such action, whether
or not such Persons continue to be Debentureholders after such record date. No such consent shall
be valid or effective for more than 120 days after such record date.

     Section 9.05. Notation on or Exchange of Debentures. If an amendment changes the terms of a
Debenture, the Trustee may require the Debentureholder of the Debenture to deliver it to the
Trustee. The Trustee may place an appropriate notation on the Debenture regarding the changed
terms and return it to the Debentureholder. Alternatively, if the Company or the Trustee so
determines, the Company in exchange for the Debenture shall issue and the Trustee shall
authenticate a new Debenture that reflects the changed terms. Failure to make the appropriate
notation or to issue a new Debenture shall not affect the validity of such amendment.

     Section 9.06. Trustee to Sign Amendments. The Trustee shall sign any amendment authorized
pursuant to this Article 9 if the amendment does not adversely affect the rights, duties,
liabilities or immunities of the Trustee. If it does, the Trustee may but need not sign it. In
signing such amendment the Trustee shall be entitled to receive indemnity reasonably satisfactory
to it and to receive, and (subject to Section 7.01) shall be fully protected in relying upon, an
Officers’ Certificate and an Opinion of Counsel stating that such amendment is authorized or
permitted by this Indenture and complies with the provisions hereof.

ARTICLE 10

Conversion of Debentures

     Section 10.01. Right to Convert. (a) Subject to and upon compliance with the provisions of
this Indenture, on or prior to 5:00 p.m. New York City time on the Business Day immediately
preceding the Maturity Date, the Holder of any Debentures not previously redeemed or repurchased
shall have the right, at such Holder’s option, to convert the principal amount of the Debentures
held by such Holder, or any portion of such principal amount which is an integral multiple of
$1,000, into cash and, if applicable, fully paid and non-assessable shares of Common Stock (as such
shares shall then be constituted) as described in Section 10.13, subject to the Company’s right
under Section 10.14 to make a one-time election to satisfy its conversion obligation entirely in
shares of Common Stock,

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based on the Conversion Rate in effect at such time, by surrender of the Debentures so to be
converted in whole or in part, together with any required funds, under the circumstances described
in this Section 10.01 and in the manner provided in Section 10.02. The Debentures shall be
convertible only upon the occurrence of one of the following events:

     (i) prior to August 1, 2025, on any date during any Fiscal Quarter beginning after
September 30, 2007 (and only during such Fiscal Quarter), if the Closing Sale Price of a
share of Common Stock was more than 120% of the then current Conversion Price for at least
20 Trading Days in the 30 consecutive Trading Day period ending on the last Trading Day of
the immediately preceding Fiscal Quarter;

     (ii) at any time on or after August 1, 2025;

     (iii) with respect to Debentures called for redemption pursuant to Section 3.01,
until 5:00 p.m., New York City time, on the Business Day prior to the relevant redemption
date;

     (iv) during the time period described in Section 10.01(c), if the Company
distributes to all or substantially all holders of Common Stock rights or warrants (other
than pursuant to a stockholder rights plan) entitling them to purchase, for a period of 45
calendar days or less, Common Stock at less than the average Closing Sale Price per share
of the Common Stock for the 10 consecutive Trading Days preceding the declaration date for
such distribution;

     (v) during the time period described in Section 10.01(c), if the Company distributes
to all or substantially all holders of Common Stock, cash or other assets, debt securities
or rights to purchase the Company’s securities (other than pursuant to a stockholder
rights plan), which distribution has a per share value exceeding 10% of the Closing Sale
Price per share of the Common Stock on the Trading Day preceding the declaration date for
such distribution;

     (vi) if a Fundamental Change occurs, at any time beginning on the Business Day
following the effective date of the Fundamental Change until 5:00 p.m., New York City
time, on the Business Day preceding the Fundamental Change Repurchase Date relating to
such Fundamental Change; or

     (vii) during the five consecutive Business Day period immediately following any ten
consecutive Trading Day period in which the Trading Price per $1,000 principal amount of
the Debentures for each Trading Day was less than 98% of the product of the Closing Sale
Price of a share of Common Stock and the applicable Conversion Rate for each such Trading
Day of such five consecutive Trading Day period.

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     (b) (i) The Company shall notify the Trustee in writing on or prior to the fifth Business Day
following the first day of each Fiscal Quarter (commencing prior to August 1, 2025, beginning with
the Fiscal Quarter ending December 31, 2007) whether the condition to conversion set forth in
Section 10.01(a)(i) above shall have been satisfied with respect to such Fiscal Quarter.

     (ii) The Trustee shall have no obligation to determine the Trading Price per $1,000 principal
amount of the Debentures and whether the Debentures are convertible pursuant to clause (vii) of
Section 10.01(a) unless the Company has requested such determination; and the Company shall have
no obligation to make such request unless a Holder of the Debentures makes a request for a
determination and provides the Company with reasonable evidence that the Trading Price per $1,000
principal amount of Debentures is reasonably likely to be less than 98% of the product of the
Closing Sale Price of the Common Stock and the Conversion Rate then in effect. At such time, the
Company shall instruct the Trustee to determine the Trading Price of the Debentures beginning on
the next Trading Day and on each successive Trading Day until the Trading Price per $1,000
principal amount of Debentures exceeds the applicable price threshold.

     (iii) The Trustee shall be entitled at its sole discretion to consult with the Company and to
request the assistance of the Company in connection with the Trustee’s duties and obligations
pursuant to Section 10.01(b)(i) and Section 10.01(b)(ii) hereof (including without limitation the
calculation or determination of the Closing Sale Price and the Trading Price), and the Company
agrees, if requested by the Trustee, to cooperate with, and provide assistance to, the Trustee in
carrying out its duties under this Section 10.01. Upon determination of the Closing Sale Price or
the Trading Price, the Trustee shall notify the Company in writing of such determination and, in
the case of the determination of the Trading Price or the Closing Sale Price, upon request the
Company shall promptly confirm such determination in writing to the Trustee.

     (c) In the case of a distribution contemplated by clauses (iv) or (v) of Section 10.01(a),
the Company shall notify Holders of Debentures at least 10 Business Days prior to the “ex” date.
Once the Company has given the foregoing notice, Holders may surrender their Debentures for
conversion at any time until the earlier of (i) 5:00 p.m., New York City time, on the Business Day
immediately preceding the “ex” date or (ii) the Company’s announcement that such distribution will
not take place. In the event of a distribution contemplated by clauses (iv) or (v) of Section
10.01(a), Holders may not convert the Debentures based on this conversion contingency if the
Holders may otherwise participate in such distribution without converting their Debentures as a
result of holding the Debentures at the same time as holders of Common Stock participate with
respect to such distribution and on the same terms as holders of Common Stock participate with
respect to such distribution as if Holders of the Debentures, at such time, held a number of shares
of Common Stock equal to the Conversion Rate, multiplied by the principal amount (expressed in
thousands) of Debentures held by such Holder, without having to convert their Debentures.

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     (d) Whenever the Debentures shall become convertible pursuant to this Section 10.01, the
Company or, at the Company’s request, the Trustee in the name and at the expense of the Company,
shall notify the Holders of the event triggering such convertibility in the manner provided in
Section 11.02, and the Company shall also publicly announce such information and publish it on the
Company’s website; provided that a separate notice and announcement shall not be required under
this Section if such notice and announcement has been effectively provided under another provision
of this Indenture. Any notice so given shall be conclusively presumed to have been duly given,
whether or not the Holder receives such notice. The Company shall notify Holders at least 10
calendar days prior to the anticipated effective date of any Fundamental Change.

     (e) Debentures in respect of which a Holder has delivered a Repurchase Notice exercising such
Holder’s right to require the Company to repurchase such Debentures pursuant to Section 3.04 or
3.05 may be converted only if such Repurchase Notice is withdrawn in accordance with Section 3.07
prior to 5:00 p.m., New York City time, on the Business Day immediately preceding the Repurchase
Date or the Fundamental Change Repurchase Date, as applicable.

     (f) A Holder of Debentures is not entitled to any rights of a Holder of Common Stock until
such Holder has converted his Debentures to Common Stock, and only to the extent such Debentures
are deemed to have been converted to Common Stock under this Article 10.

     Section 10.02. Exercise of Conversion Right; Issuance of Common Stock on Conversion; No
Adjustment for Interest or Dividends. In order to exercise the conversion right with respect to
any Debentures in certificated form, the Company must receive at the office or agency of the
Conversion Agent, such Debentures with the original or facsimile of the form entitled “Conversion
Notice” on the reverse thereof, duly completed and manually signed, together with such Debentures
duly endorsed for transfer, together with any other required transfer documents, accompanied by the
funds, if any, required by this Section 10.02. Such notice shall also state the name or names
(with address or addresses) in which the certificate or certificates for shares of Common Stock
which shall be issuable on such conversion shall be issued, and shall be accompanied by transfer or
similar taxes, if required pursuant to Section 10.08.

     In order to exercise the conversion right with respect to any interest in a Global Debenture,
the Holder must complete, or cause to be completed, the appropriate instruction form for conversion
pursuant to the Depositary’s book-entry conversion program; deliver, or cause to be delivered, by
book-entry delivery an interest in such Global Debenture; furnish appropriate endorsements and
transfer documents if required by the Company or the Trustee or conversion agent; and pay the
funds, if any, required by this Section 10.02 and any transfer or similar taxes if required
pursuant to Section 10.08.

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     After satisfaction of the requirements for conversion set forth above, the Company will
deliver cash, Common Stock or a combination of cash and Common Stock in accordance with Section
10.13 or Section 10.14 as applicable. In case any Debentures of a denomination greater than
$1,000 shall be surrendered for partial conversion, and subject to Section 2.03, the Company shall
execute and the Trustee shall authenticate and deliver to the Holder of the Debentures so
surrendered, without charge to the Holder, a new Debenture or Debentures in authorized
denominations in an aggregate principal amount equal to the unconverted portion of the surrendered
Debentures.

     Each conversion shall be deemed to have been effected as to any such Debentures (or portion
thereof) on the date on which the requirements set forth above in this Section 10.02 have been
satisfied as to such Debentures (or portion thereof) (the “Conversion Date”) and such Debentures
will be deemed to have been converted immediately prior to 5:00 p.m., New York City time, on the
Conversion Date. The Person in whose name any certificate or certificates for shares of Common
Stock shall be issuable upon such conversion shall be deemed to have become, on said date, the
holder of record of the shares represented thereby; provided that any such surrender on any date
when the stock transfer books of the Company shall be closed shall constitute the Person in whose
name the certificates are to be issued as the record holder thereof for all purposes on the next
succeeding day on which such stock transfer books are open, but such conversion shall nonetheless
be calculated based on the Conversion Date.

     Any Debentures or portion thereof surrendered for conversion during the period after the
Record Date for any interest payment date but prior to the corresponding interest payment date
shall be accompanied by payment, in immediately available funds or other funds acceptable to the
Company, of an amount equal to the interest (excluding any Additional Interest and any additional
interest due under Section 6.13) otherwise payable on such interest payment date on the principal
amount being converted; provided that no such payment need be made (1) if a Holder converts its
Debentures in connection with a redemption and the Company has specified a redemption date that is
after a Record Date and on or prior to the corresponding interest payment date, (2) if a Holder
converts its Debentures in connection with a Fundamental Change and the Company has specified a
Fundamental Change Repurchase Date that is after a Record Date and on or prior to the corresponding
interest payment date or (3) to the extent of any overdue interest, if any overdue interest exists
at the time of conversion with respect to such Debentures. Except as provided in this Section
10.02 and Section 10.06, no payment or other adjustment shall be made for interest accrued on any
Debentures converted or for dividends on any shares issued upon the conversion of such Debentures
as provided in this Article 10.

     Upon the conversion of an interest in a Global Debenture, the Trustee (or other Conversion
Agent appointed by the Company), or the custodian for the Global Debenture at the direction of the
Trustee (or other Conversion Agent appointed by the Company), shall make a notation on such Global
Debenture as to

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the reduction in the principal amount represented thereby. The Company shall notify the
Trustee in writing of any conversions of Debentures effected through any Conversion Agent other
than the Trustee.

     Upon the conversion of any Debentures, accrued but unpaid interest with respect to the
converted Debentures shall not be cancelled, extinguished or forfeited, but rather shall be deemed
to be paid in full to the Holder thereof through delivery of the cash, Common Stock or combination
or cash and Common Stock in exchange for the Debentures being converted pursuant to the provisions
hereof.

     Section 10.03. Cash Payments in Lieu of Fractional Shares. No fractional shares of Common
Stock or scrip certificates representing fractional shares shall be issued upon conversion of
Debentures. If more than one Debenture shall be surrendered for conversion at one time by the same
Holder, the number of full shares that shall be issuable upon conversion shall be computed on the
basis of the aggregate principal amount of the Debentures (or specified portions thereof to the
extent permitted hereby) so surrendered. Subject to Section 10.14, if any fractional share of
stock would be issuable upon the conversion of any Debenture or Debentures, the Company shall make
an adjustment and payment therefor in cash to the Holder of Debentures at a price equal to the
Closing Sale Price on the last Trading Day of the Conversion Period.

     Section 10.04. Conversion Rate. Each $1,000 principal amount of the Debentures shall be
convertible into cash and/or the number of shares of Common Stock, if any, based upon the
Conversion Rate, subject to adjustment as provided in Section 10.05 and Section 10.06. The
Company shall settle its obligation to convert the Debentures as provided in Section 10.13 or
Section 10.14 as applicable.

     Section 10.05. Adjustment to Conversion Rate upon a Non-Stock Change of Control. (a) Subject
to Section 10.15, if and only to the extent a Holder elects to convert Debentures at any time
following the date on which a Non-Stock Change of Control becomes effective (the “Effective Date”)
but before 5:00 p.m., New York City time, on the Business Day immediately preceding the related
Fundamental Change Purchase Date, the Company shall increase the Conversion Rate applicable to such
converted Debentures by a number of additional shares (the “Additional Shares”) described in this
Section 10.05. The number of Additional Shares shall be determined by reference to the table
below, based on the Effective Date and the price (the “Stock Price”) paid per share for the Common
Stock in the Non-Stock Change of Control. If holders of Common Stock receive only cash in the
Non-Stock Change of Control, the Stock Price shall be the cash amount paid per share. Otherwise,
the Stock Price shall be the average of the Closing Sale Prices of the Common Stock on the five
Trading Days prior to but not including the Effective Date of such Non-Stock Change of Control.

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The following table sets forth the number of Additional Shares by which the Conversion Rate
will be increased based on the Effective Date and Stock Price for the Non-Stock Change of Control:

	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	Effective Date	 	Stock Price
	 
	 	$	26.78	 	 	$	30.00	 	 	$	35.48	 	 	$	40.00	 	 	$	50.00	 	 	$	60.00	 	 	$	70.00	 	 	$	80.00	 	 	$	90.00	 	 	$	100.00	 	 	$	110.00	 	 	$	120.00	 	 	$	130.00	 
	07/27/2007
	 	 	9.1591	 	 	 	7.5439	 	 	 	5.6369	 	 	 	4.5696	 	 	 	3.0743	 	 	 	2.2125	 	 	 	1.6671	 	 	 	1.2966	 	 	 	1.0323	 	 	 	0.8355	 	 	 	0.6843	 	 	 	0.5654	 	 	 	0.4699	 
	08/01/2008
	 	 	8.8706	 	 	 	7.2270	 	 	 	5.3103	 	 	 	4.2534	 	 	 	2.8016	 	 	 	1.9874	 	 	 	1.4832	 	 	 	1.1465	 	 	 	0.9088	 	 	 	0.7330	 	 	 	0.5991	 	 	 	0.4940	 	 	 	0.4097	 
	08/01/2009
	 	 	8.5095	 	 	 	6.8345	 	 	 	4.9104	 	 	 	3.8696	 	 	 	2.4771	 	 	 	1.7238	 	 	 	1.2705	 	 	 	0.9751	 	 	 	0.7691	 	 	 	0.6192	 	 	 	0.5053	 	 	 	0.4161	 	 	 	0.3448	 
	08/01/2010
	 	 	8.1189	 	 	 	6.3947	 	 	 	4.4514	 	 	 	3.4266	 	 	 	2.1045	 	 	 	1.4252	 	 	 	1.0336	 	 	 	0.7860	 	 	 	0.6180	 	 	 	0.4967	 	 	 	0.4047	 	 	 	0.3333	 	 	 	0.2760	 
	08/01/2011
	 	 	7.6703	 	 	 	5.8713	 	 	 	3.8937	 	 	 	2.8880	 	 	 	1.6599	 	 	 	1.0781	 	 	 	0.7651	 	 	 	0.5768	 	 	 	0.4528	 	 	 	0.3642	 	 	 	0.2981	 	 	 	0.2463	 	 	 	0.2045	 
	08/01/2012
	 	 	7.1389	 	 	 	5.2179	 	 	 	3.1789	 	 	 	2.2009	 	 	 	1.1153	 	 	 	0.6732	 	 	 	0.4641	 	 	 	0.3487	 	 	 	0.2752	 	 	 	0.2239	 	 	 	0.1850	 	 	 	0.1537	 	 	 	0.1286	 
	08/01/2013
	 	 	6.5114	 	 	 	4.3505	 	 	 	2.1747	 	 	 	1.2519	 	 	 	0.4402	 	 	 	0.2220	 	 	 	0.1494	 	 	 	0.1150	 	 	 	0.0936	 	 	 	0.0775	 	 	 	0.0651	 	 	 	0.0549	 	 	 	0.0461	 
	08/01/2014
	 	 	6.1592	 	 	 	3.3487	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 

     (b) If the Stock Price or Effective Date for a Non-Stock Change of Control are not set
forth on the table above, then:

     (1) if the Stock Price is between two Stock Prices on the table or the Effective Date
is between two Effective Dates on the table, the number of Additional Shares shall be
determined by straight-line interpolation between the number of Additional Shares set
forth for the higher and lower Stock Price and between the two Effective Dates, as
applicable, based on a 360-day year;

     (2) if the Stock Price is in excess of $130.00 per share (subject to adjustment as
set forth in Section 10.05(c)), no Additional Shares shall be added to the Conversion
Rate; or

     (3) if the Stock Price is less than $26.78 per share (subject to adjustment as set
forth in Section 10.05(c)), no Additional Shares shall be added to the Conversion Rate.

     Notwithstanding the foregoing, in no event will the Conversion Rate exceed 37.3412 shares of
Common Stock per $1,000 principal amount of the Debentures.

     (c) The number of Additional Shares of Common Stock set forth in the table above shall be
adjusted as of any date on which the Conversion Rate is adjusted in the same manner in which the
Conversion Rate is adjusted. The Stock Prices set forth in the table below shall be adjusted, as
of any date on which the Conversion Rate is adjusted, to equal the Stock Price applicable
immediately prior to such adjustment multiplied by a fraction, of which:

     (1) the numerator shall be the Conversion Rate immediately prior to the adjustment;
and

     (2) the denominator shall be the Conversion Rate as so adjusted.

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     (d) The Company shall provide written notice to all Holders and to the Trustee at least 10
calendar days prior to the anticipated Effective Date of a Non-Stock Change of Control to the
extent practicable.

     Section 10.06. Adjustment of Conversion Rate. The Conversion Rate shall be adjusted from
time to time by the Company as follows:

     (a) In case the Company shall, at any time or from time to time while any of the Debentures
are outstanding, pay a dividend in shares of Common Stock or make a distribution in shares of
Common Stock to all or substantially all holders of its outstanding shares of Common Stock, then
the Conversion Rate in effect at the opening of business on the “ex” date for such dividend or
other distribution shall be increased by multiplying such Conversion Rate by a fraction,

     (1) the numerator of which shall be the sum of the number of shares of Common Stock
outstanding at the close of business on the date fixed for the determination of
stockholders entitled to receive such dividend or other distribution plus the total number
of shares of Common Stock constituting such dividend or other distribution; and

     (2) the denominator of which shall be the number of shares of Common Stock
outstanding at the close of business on the date fixed for such determination,

such increase to become effective immediately after the opening of business on “ex” date for such
distribution. If any dividend or distribution of the type described in this Section 10.06(a) is
declared but not so paid or made, the Conversion Rate shall again be adjusted to the Conversion
Rate that would then be in effect if such dividend or distribution had not been declared.

     (b) In case outstanding shares of Common Stock shall be subdivided into a greater number of
shares of Common Stock, the Conversion Rate in effect at the opening of business on the day
following the day upon which such subdivision becomes effective shall be proportionately increased,
and conversely, in case outstanding shares of Common Stock shall be combined into a smaller number
of shares of Common Stock, the Conversion Rate in effect at the opening of business on the day
following the day upon which such combination becomes effective shall be proportionately reduced,
such increase or reduction, as the case may be, to become effective immediately after the opening
of business on the day following the day upon which such subdivision or combination becomes
effective.

     (c) In case the Company shall distribute rights or warrants (other than any rights or warrants
referred to in Section 10.06(d)) to all or substantially all holders of its outstanding shares of
Common Stock entitling them to subscribe or purchase, for a period of 45 calendar days or less,
shares of Common Stock at a price per share less than the Current Market Price on the declaration
date of the distribution, the Conversion Rate shall be increased so that the same shall equal

58

 

the
rate determined by multiplying the Conversion Rate in effect at the opening of business on the “ex”
date for such distribution by a fraction,

     (1) the numerator of which shall be the number of shares of Common Stock outstanding
on the date fixed for determination of stockholders entitled to receive such rights or
warrants plus the total number of additional shares of Common Stock offered for
subscription or purchase, and

     (2) the denominator of which shall be the sum of the number of shares of Common Stock
outstanding at the close of business on the date fixed for determination of stockholders
entitled to receive such rights or warrants plus the number of shares that the aggregate
offering price of the total number of shares so offered would purchase at such Current
Market Price.

     Such adjustment shall be successively made whenever any such rights or warrants are
distributed, and shall become effective immediately after the opening of business on the “ex” date
for such distribution. To the extent that shares of Common Stock are not delivered after the
expiration of such rights or warrants, the Conversion Rate shall be readjusted to the Conversion
Rate that would then be in effect had the adjustments made upon the issuance of such rights or
warrants been made on the basis of delivery of only the number of shares of Common Stock actually
delivered. If such rights or warrants are not so issued, the Conversion Rate shall again be
adjusted to be the Conversion Rate that would then be in effect if the “ex” date for the
distribution had not been fixed. In determining whether any rights or warrants entitle the holders
to subscribe for or purchase shares of Common Stock at less than such Current Market Price, and in
determining the aggregate offering price of such shares of Common Stock, there shall be taken into
account any consideration received by the Company for such rights or warrants and any amount
payable on exercise or conversion thereof, the value of such consideration, if other than cash, to
be determined by the Board of Directors.

     (d) In case the Company shall, by dividend or otherwise, distribute to all or substantially
all holders of its outstanding shares of Common Stock shares of any class of capital stock of the
Company or evidences of its indebtedness or assets (including securities, but excluding (i) any
rights or warrants referred to in Section 10.06(c), (ii) any dividends or distributions in
connection with a reclassification, change, consolidation, merger, sale, lease, transfer,
conveyance or other disposition to which Section 10.07 applies, (iii) any dividends or
distributions paid exclusively in cash or (iv) any dividends or distributions referred to in
Section 10.06(a)) (any of the foregoing hereinafter in this Section 10.06(d) called the
“Distributed Assets”), then, in each such case, the Conversion Rate shall be increased so that the
same shall be equal to the rate determined by multiplying the Conversion Rate in effect at the
opening of business on the “ex” date for such distribution by a fraction,

59

 

     (1) the numerator of which shall be the Current Market Price on the “ex” date for
such distribution, and

     (2) the denominator of which shall be the Current Market Price on the “ex” date less
the Fair Market Value (as determined by the Board of Directors, whose determination shall
be conclusive, and described in a resolution of the Board of Directors) of the portion of
the Distributed Assets so distributed applicable to one share of Common Stock,

such adjustment to become effective immediately after the opening of business on the “ex” date;
provided that if the then Fair Market Value (as so determined) of the portion of the Distributed
Assets so distributed applicable to one share of Common Stock is equal to or greater than the
Current Market Price on the “ex” date or the Current Market Price exceeds such Fair Market Value by
less than $1.00, in lieu of the foregoing adjustment, adequate provision shall be made so that each
Holder of Debentures shall have the right to receive upon conversion, for each $1,000 principal
amount of Debentures, the amount of Distributed Assets such Holder would have received had such
Holder owned a number of shares of Common Stock equal to the Conversion Rate on the record date for
such distribution. If such distribution is not so paid or made, the Conversion Rate shall again be
adjusted to be the Conversion Rate that would then be in effect if such distribution had not been
declared.

     If the Board of Directors determines the Fair Market Value of any distribution for purposes of
this Section 10.06(d) by reference to the actual or when issued trading market for any Distributed
Assets comprising all or part of such distribution, it must in doing so consider the prices in such
market over the same period (the “Reference Period”) used in computing the Current Market Price
pursuant to Section 10.06(g)(i) to the extent possible, unless the Board of Directors determines
in good faith that determining the Fair Market Value during the Reference Period would not be in
the best interest of the Holders.

     Notwithstanding the foregoing, in the event any such distribution consists of shares of
capital stock of, or similar equity interests in, one or more of the Company’s Subsidiaries that
will be traded on a securities exchange or other trading market (a “Spin-Off”), the Conversion Rate
shall be increased so that the same shall be equal to the rate determined by multiplying the
Conversion Rate in effect at the opening of business on the “ex” date with respect to such
distribution by a fraction,

     (1) the numerator of which shall be the average of the Closing Sale Price of the
Common Stock over the Spin-off Valuation Period (as defined below), plus the Fair Market
Value of the portion of the distributed assets so distributed applicable to one share of
Common Stock (determined on the basis of the number of shares of Common Stock outstanding
on the record date), determined as set forth above, and

60

 

     (2) the denominator of which shall be the average of the Closing Sale Price of the
Common Stock over the Spin-off Valuation Period; and

such increase shall become effective immediately after the opening of business on the “ex” date.
In the event that such dividend or distribution is not so paid or made, the Conversion Rate shall
again be adjusted to be the Conversion Rate that would then be in effect if such dividend or
distribution had not been declared. In the case of a Spin-Off, the Fair Market Value of the
securities to be distributed shall equal the average of the Closing Sale Prices of such securities
on the principal securities market on which such securities are traded for the five consecutive
Trading Days commencing on and including the sixth day of trading of those securities after the
effectiveness of the Spin-Off (the “Spin-Off Valuation Period”). If, however, that an underwritten
initial public offering of the securities in the Spin-Off occurs simultaneously with the Spin-Off,
the Fair Market Value of the securities distributed in the Spin-Off shall mean the initial public
offering price of such securities and the Closing Sale Price for the Common Stock on the same
Trading Day shall be substituted for the average of the Closing Sale Price of the Common Stock over
the Spin-off Valuation Period in the fraction used to adjust the Conversion Rate.

     Rights or warrants distributed by the Company to all holders of Common Stock entitling the
holders thereof to subscribe for or purchase shares of the Company’s capital stock (either
initially or under certain circumstances), which rights or warrants, until the occurrence of a
specified event or events (“Trigger Event”): (i) are deemed to be transferred with such shares of
Common Stock; (ii) are not exercisable; and (iii) are also issued in respect of future issuances of
Common Stock, shall be deemed not to have been distributed for purposes of this Section 10.06 (and
no adjustment to the Conversion Rate under this Section 10.06 will be required) until the
occurrence of the earliest Trigger Event, whereupon such rights and 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 10.06(d). In addition, in the event of any distribution (or
deemed distribution) of rights or warrants, or any Trigger Event with respect thereto for which an
adjustment to the Conversion Rate under this Section 10.06 was made, (1) in the case of any such
rights or warrants that shall all have been redeemed or repurchased without exercise by any holders
thereof, the Conversion Rate shall be readjusted upon such final redemption or repurchase to give
effect to such distribution or Trigger Event, as the case may be, as though it were a cash
distribution, in an amount equal to the per share redemption or repurchase price
received by a holder or holders of Common Stock with respect to such rights or warrants
(assuming such holder had retained such rights or warrants), made to all holders of Common Stock as
of the date of such redemption or repurchase, and (2) in the case of such rights 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 and warrants had not been issued.

61

 

     No adjustment of the Conversion Rate shall be made pursuant to this Section 10.06(d) in
respect of rights or warrants distributed on any Trigger Event to the extent that Holders of the
Debentures participate in the distribution without conversion as a result of holding the Debentures
at the same time as holders of Common Stock participate with respect to such distribution and on
the same terms as holders of Common Stock participate with respect to such distribution as if
Holders of the Debentures, at such time, held a number of shares of Common Stock equal to the
Conversion Rate, multiplied by the principal amount (expressed in thousands) of Debentures held by
such Holder, without having to convert their Debentures.

     For purposes of this Section 10.06(d) and Sections 10.06(a) and 10.06(b), any dividend or
distribution to which this Section 10.06(d) is applicable that also includes shares of Common
Stock, or rights or warrants to subscribe for or purchase shares of Common Stock (or both), shall
be deemed instead to be (1) a dividend or distribution of the evidences of indebtedness, assets or
shares of capital stock other than such shares of Common Stock or rights or warrants (and any
Conversion Rate adjustment required by this Section 10.06(d) with respect to such dividend or
distribution shall then be made) immediately followed by (2) a dividend or distribution of such
shares of Common Stock or such rights or warrants (and any further Conversion Rate adjustment
required by Section 10.06(a) or 10.06(b) with respect to such dividend or distribution shall then
be made), except any shares of Common Stock included in such dividend or distribution shall not be
deemed “outstanding at the close of business on the date fixed for such determination” within the
meaning of Section 10.06(a).

     (e) In case the Company shall, by dividend or otherwise, distribute to all or substantially
all holders of its Common Stock cash (including any quarterly cash dividend, but excluding (x) any
dividend or distribution in connection with the liquidation, dissolution or winding up of the
Company, whether voluntary or involuntary and (y) any dividend or distribution in connection with a
merger, consolidation or sale to which Section 10.07 applies), then the Conversion Rate shall be
increased so that the same shall equal the rate determined by multiplying the Conversion Rate in
effect at the opening of business on the “ex” date for such distribution by a fraction,

     (1) the numerator of which shall be the Current Market Price of Common Stock on the
“ex” date for the distribution; and

     (2) the denominator of which shall be the Current Market Price of Common Stock on the
“ex” date for the distribution less the amount of the cash dividend or distribution
applicable to one share of Common Stock,

such adjustment to be effective immediately after the opening of business on the “ex” date for such
distribution; provided that if the portion of the cash so distributed applicable to one share of
Common Stock is equal to or greater than the Current Market Price on the “ex” date for the
distribution, in lieu of the

62

 

foregoing adjustment, adequate provision shall be made so that each
Holder of Debentures shall have the right to receive upon conversion for each $1,000 principal
amount of Debentures, the amount of cash such Holder would have received had such Holder owned a
number of shares equal to the Conversion Rate on the record date for such dividend or distribution.
If such dividend or distribution is not so paid or made, the Conversion Rate shall again be
adjusted to be the Conversion Rate that would then be in effect if such dividend or distribution
had not been declared.

     (f) In case a tender or exchange offer made by the Company or any Subsidiary for all or any
portion of the Common Stock shall expire and such tender or exchange offer (as amended upon the
expiration thereof) shall require the payment to stockholders of consideration per share of Common
Stock having a Fair Market Value (which, if other than cash, shall be as determined by the Board of
Directors, whose determination shall be conclusive and described in a resolution of the Board of
Directors) that as of the last time (the “Expiration Time”) tenders or exchanges may be made
pursuant to such tender or exchange offer (as it may be amended) exceeds the Closing Sale Price of
a share of Common Stock on the Trading Day next succeeding the Expiration Time, the Conversion Rate
shall be increased so that the same shall equal the rate determined by multiplying the Conversion
Rate in effect at the Expiration Time by a fraction,

     (1) the numerator of which shall be the sum of (x) the Fair Market Value (determined
as aforesaid) of the aggregate consideration paid to stockholders for all shares accepted
for purchase in the tender or exchange offer (the “Purchased Shares”) and (y) the product
of the number of shares of Common Stock outstanding (less any Purchased Shares) at the
Expiration Time and the Closing Sale Price of a share of Common Stock on the Trading Day
next succeeding the Expiration Time, and

     (2) the denominator of which shall be the number of shares of Common Stock
outstanding (including any Purchased Shares) at the Expiration Time multiplied by the
Closing Sale Price of a share of Common Stock on the Trading Day next succeeding the
Expiration Time,

such adjustment to become effective immediately prior to the opening of business on the day
following the Expiration Time. If the Company is obligated to
purchase shares pursuant to any such tender or exchange offer, but the Company is permanently
prevented by applicable law from effecting any such purchases or any such purchases are rescinded,
the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect
if such tender or exchange offer had not been made for the shares not purchased.

     (g) For purposes of this Section 10.06, the following terms shall have the meaning indicated:

63

 

     (i) “Current Market Price” on any date means the average of the daily Closing Sale
Prices per share of Common Stock for the ten consecutive Trading Days immediately prior to
such date (the “day in question”); provided that if the “ex” date for any event (other
than the issuance or distribution requiring such computation) that requires an adjustment
to the Conversion Rate pursuant to Section 10.06(a), 10.06(b), 10.06(c), 10.06(d),
10.06(e) or 10.06(f) occurs during such ten consecutive Trading Days, the Closing Sale
Price for each Trading Day prior to the “ex” date for such other event shall be adjusted
by dividing such Closing Sale Price by the same fraction by which the Conversion Rate is
so required to be multiplied as a result of such other event.

     Notwithstanding the foregoing, whenever successive adjustments to the Conversion Rate
are called for pursuant to this Section 10.06, such adjustments shall be made to the
Current Market Price as may be necessary or appropriate to effectuate the intent of this
Section 10.06 and to avoid unjust or inequitable results as determined in good faith by
the Board of Directors.

     (ii) “Fair Market Value” shall mean the amount which a willing buyer would pay a
willing seller in an arm’s-length transaction. The Fair Market Value of cash shall be the
amount of the cash.

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

     (h) The Company may make such increases in the Conversion Rate, in addition to those required
by Section 10.06(a)-(f), as the Board of Directors considers to be advisable to avoid or diminish
any income tax to holders of Common Stock or rights to purchase Common Stock resulting from any
dividend
or distribution of stock (or rights to acquire stock) or from any event treated as such for
income tax purposes.

     (i) To the extent permitted by applicable law, the Company from time to time may increase the
Conversion Rate by any amount for any period of time if the period is at least 20 Business Days,
the increase is irrevocable during the period and the Board of Directors shall have made a
determination that such increase would be in the best interests of the Company, which determination
shall be conclusive. Whenever the Conversion Rate is increased pursuant to the preceding sentence,
the Company shall mail to Holders of record of the

64

 

Debentures a notice of the increase, which
notice will be given at least 15 days prior to the effectiveness of any such increase, and such
notice shall state the increased Conversion Rate and the period during which it will be in effect.

     (j) No adjustment in the Conversion Rate shall be required unless such adjustment would
require an increase or decrease of at least one percent (1%) in such rate; provided that any
adjustments that by reason of this Section 10.06(j) are not required to be made shall be carried
forward and the Company shall make such carry forward adjustments, regardless of whether the
aggregate adjustment is less than 1%, (1) annually on the anniversary of the Closing Date, (2) five
Business Days prior to the maturity of the Debentures, (3) on the Business Day prior to any
redemption date or Repurchase Date and (4) immediately prior to the occurrence of any Fundamental
Change, unless such adjustment has already been made. All calculations under this Article 10
shall be made by the Company and shall be made to the nearest cent or to the nearest one-ten
thousandth (1/10,000) of a share, as the case may be. No adjustment need be made for rights to
purchase Common Stock pursuant to a Company plan for reinvestment of dividends or interest or for
any issuance of Common Stock or convertible or exchangeable securities or rights to purchase Common
Stock or convertible or exchangeable securities. Interest will not accrue on any cash into which
the Debentures are convertible.

     (k) Whenever the Conversion Rate is adjusted as herein provided, the Company will issue a
press release through Business Wire containing the relevant information and make this information
available on the Company’s website or through another public medium as the Company may use at that
time. In addition, the Company shall promptly file with the Trustee and any Conversion Agent other
than the Trustee an Officers’ Certificate setting forth the Conversion Rate after such adjustment
and setting forth a brief statement of the facts requiring such adjustment. Unless and until a
Responsible Officer of the Trustee shall have received such Officers’ Certificate, the Trustee
shall not be deemed to have knowledge of any adjustment of the Conversion Rate and may assume that
the last Conversion Rate of which it has actual knowledge is still in effect.

     (l) In any case in which this Section 10.06 provides that an adjustment shall become
effective (1) upon the opening of business on an “ex” date, (2) immediately after the record date
for an event, or (3) after the Expiration Time for
any tender or exchange offer pursuant to Section 10.06(f), (each a “Determination Date”), the
Company may elect to defer until the occurrence of the applicable distribution, issuance of Common
Stock or payment (an “Adjustment Event”) triggering a Conversion Rate adjustment (x) issuing to the
Holder of any Debentures converted after such Determination Date and before the occurrence of such
Adjustment Event, the additional cash, shares of Common Stock, if any, or other securities or
property issuable upon such conversion by reason of the adjustment required by such Adjustment
Event over and above the cash, the Common Stock, or combination of cash and Common Stock, issuable

65

 

upon such conversion before giving effect to such adjustment and (y) paying to such Holder any
amount in cash in lieu of any fractional share.

     (m) For purposes of this Section 10.06, the number of shares of Common Stock at any time
outstanding shall not include shares held in the treasury of the Company, but shall include shares
issuable in respect of scrip certificates issued in lieu of fractions of shares of Common Stock.

     (n) No adjustment to the Conversion Rate shall be made pursuant to the this Section 10.06 if
the Holders of the Debentures will otherwise participate in such distribution without conversion as
a result of holding the Debentures at the same time as holders of Common Stock participate with
respect to such distribution and on the same terms as holders of Common Stock participate with
respect to such distribution as if Holders of the Debentures, at such time, held a number of shares
of Common Stock equal to the Conversion Rate, multiplied by the principal amount (expressed in
thousands) of Debentures held by such Holder, without having to convert their Debentures.

     Section 10.07. Effect of Reclassification, Consolidation, Merger or Sale. If any of the
following events occur, namely:

     (a) any reclassification or change of the outstanding Common Stock (other than a change in par
value, or from par value to no par value, or from no par value to par value, or as a result of a
subdivision or combination),

     (b) any consolidation or merger of the Company with or into another Person or

     (c) any sale, lease, transfer, conveyance or other disposition of all or substantially all of
the Company’s assets and those of its Subsidiaries taken as a whole to another Person,

as a result of which holders of Common Stock shall be entitled to receive stock, other securities
or other property or assets (including cash or any combination thereof) with respect to or in
exchange for such Common Stock, in each case, the Company or the successor or purchasing
corporation, as the case may be, shall execute with the Trustee a supplemental indenture (which
shall comply with the Trust Indenture Act as in force at the date of execution of such supplemental
indenture, if such supplemental indenture is then required to so comply) providing that such
Debentures shall, without the consent of any Holders of Debentures, be convertible into the kind
and amount of shares of stock and other securities or property or assets (including cash or any
combination thereof) (the “Applicable Consideration”) that such Holder would have been entitled to
receive upon such reclassification, change, consolidation, merger, sale, lease, transfer,
conveyance or other disposition had each $1,000 principal amount of the Debentures been converted
into a number of shares of Common Stock equal to the Conversion Rate immediately prior to such
reclassification, change, consolidation, merger,

66

 

 sale, lease, transfer, conveyance or other
disposition; provided that after the adjustment of the conversion obligation under this Section
10.07, the provisions for settlement upon conversion set forth in Section 10.13 and Section 10.14
and the conditions specified in Section 10.01 shall continue to apply. If the kind or amount of
securities, cash or other property receivable upon such consolidation, merger, sale, lease,
transfer, conveyance or other disposition is not the same for each share of Common Stock in the
light of rights of election available to holders of Common Stock, then for the purposes of this
Section 10.07, the kind and amount of securities, cash or other property receivable upon such
consolidation, merger, sale, lease, transfer, conveyance or other disposition shall be
proportionately the same as the kind and amount per share received by all Common Stock holders in
the aggregate and the term “Applicable Consideration” shall be construed accordingly. Such
supplemental indenture shall provide for adjustments that shall be as nearly equivalent as may be
practicable to the adjustments provided for in this Article 10, as determined in good faith by the
Board of Directors or the successor or purchasing corporation. If, in the case of any such
reclassification, change, consolidation, merger, sale, lease, transfer, conveyance or other
disposition, the stock or other securities and assets receivable thereupon by a holder of Common
Stock includes shares of stock or other securities and assets of a corporation other than the
successor or purchasing corporation, as the case may be, in such reclassification, change,
consolidation, merger, sale, lease, transfer, conveyance or other disposition, then such
supplemental indenture shall also be executed by such other corporation and shall contain such
additional provisions to protect the interests of the Holders of the Debentures as the Board of
Directors shall reasonably consider necessary by reason of the foregoing, including to the extent
practicable the provisions providing for the conversion rights set forth in this Article 10.

     The Company shall cause notice of the execution of such supplemental indenture to be mailed to
each Holder, at the address of such Holder as it appears on the register of the Debentures
maintained by the Registrar, within 20 days after execution thereof. Failure to deliver such
notice shall not affect the legality or validity of such supplemental indenture.

     The above provisions of this Section 10.07 shall similarly apply to successive
reclassifications, changes, consolidations, mergers, sales, leases, transfers, conveyances or other
dispositions.

     If this Section 10.07 applies to any event or occurrence, Section 10.06 shall not apply.
Notwithstanding this Section 10.07, if a Public Acquirer Change of Control occurs and the Company
elects to adjust its obligation to convert the Debentures and the Conversion Rate pursuant to
Section 10.15, the provisions of Section 10.15 shall apply to the conversion instead of this
Section 10.07.

     Section 10.08. Taxes on Shares Issued. The issue of stock certificates on conversions of
Debentures shall be made without charge to the converting Holder of Debentures for any documentary,
stamp or similar issue or transfer tax in

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respect of the issue thereof. The Company shall not,
however, be required to pay any such tax which may be payable in respect of any transfer involved
in the issue and delivery of stock in any name other than that of the Holder of any Debentures
converted, and the Company shall not be required to issue or deliver any such stock certificate
unless and until the Person or Persons requesting the issue thereof shall have paid to the Company
the amount of such tax or shall have established to the satisfaction of the Company that such tax
has been paid.

     Section 10.09. Reservation of Shares, Shares to be Fully Paid; Compliance with Governmental
Requirements; Listing of Common Stock; Foreign Ownership Restrictions. The Company shall provide,
free from preemptive rights, out of its authorized but unissued shares or shares held in treasury,
sufficient shares of Common Stock to provide for the conversion of the Debentures, from time to
time as such Debentures are presented for conversion.

     Before taking any action which would cause an adjustment increasing the Conversion Rate to an
amount that would cause the Conversion Price to be reduced below the then par value, if any, of the
shares of Common Stock issuable upon conversion of the Debentures, the Company will take all
corporate action which may, in the opinion of its counsel, be necessary in order that the Company
may validly and legally issue shares of such Common Stock at such adjusted Conversion Rate.

     The Company covenants that all shares of Common Stock which may be issued upon conversion of
Debentures will upon issue be fully paid and non-assessable by the Company and free from all taxes,
liens and charges with respect to the issue thereof.

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

     The Company further covenants that, if at any time the Common Stock shall be listed on The
Nasdaq Global Select Market or any other national
securities exchange or automated quotation system, the Company will, if permitted by the rules
of such exchange or automated quotation system, list and keep listed, so long as the Common Stock
shall be so listed on such exchange or automated quotation system, all Common Stock issuable upon
conversion of the Debentures; provided that if the rules of such exchange or automated quotation
system permit the Company to defer the listing of such Common Stock until the first conversion of
the Debentures into Common Stock in accordance with the provisions of this Indenture, the Company
covenants to list such Common Stock

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issuable upon conversion of the Debentures in accordance with
the requirements of such exchange or automated quotation system at such time.

     The Debentureholders, by accepting the Debentures and any Common Stock issuable upon
conversion thereof, acknowledge and agree to the restrictions on foreign ownership set forth in the
Company’s articles of incorporation and bylaws, each as amended, and agree that they may be
required to provide representation on other proof of citizenship in connection with any conversion
into Common Stock.

     Section 10.10. Responsibility of Trustee. The Trustee and any other Conversion Agent shall
not at any time be under any duty or responsibility to any Holder of Debentures to determine the
Conversion Rate or whether any facts exist which may require any adjustment of the Conversion Rate,
or with respect to the nature or extent or calculation of any such adjustment when made, or with
respect to the method employed, or herein or in any supplemental indenture provided to be employed,
in making the same. The Trustee and any other Conversion Agent shall not be accountable with
respect to the validity or value (or the kind or amount) of any shares of Common Stock, or of any
capital stock, other securities or other assets or property, which may at any time be issued or
delivered upon the conversion of any Debentures; 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
Debentures for the purpose of conversion or to comply with any of the duties, responsibilities or
covenants of the Company contained in this Article 10. 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 10.07 or Section 10.15 relating either to the kind or amount of shares of
capital stock or other securities or other assets or property (including cash) receivable by
Holders of Debentures upon the conversion of their Debentures after any event referred to in such
Section 10.07 or Section 10.15 or to any adjustment to be made with respect thereto, but, subject
to the provisions of Section 9.01, may accept as conclusive evidence of the correctness of any
such provisions, and shall be protected in relying upon, the Officers’ Certificate (which the
Company shall be obligated to
file with the Trustee prior to the execution of any such supplemental indenture) with respect
thereto.

     Section 10.11. Notice to Holders Prior to Certain Actions. In case:

     (a) the Company shall declare a dividend (or any other distribution) on its Common Stock that
would require an adjustment in the Conversion Rate pursuant to Section 10.06;

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     (b) the Company shall authorize the granting to the Holders of all or substantially all of its
Common Stock of rights or warrants to subscribe for or purchase any share of any class of its
Capital Stock or any other rights or warrants that would require an adjustment in the Conversion
Rate pursuant to Section 10.06;

     (c) of any reclassification or reorganization of the Common Stock of the Company (other than a
subdivision or combination of its outstanding Common Stock, or a change in par value, or from par
value to no par value, or from no par value to par value), or of any consolidation or merger to
which the Company is a party and for which approval of any stockholders of the Company is required,
or of the sale or transfer of all or substantially all of the assets of the Company; or

     (d) of the voluntary or involuntary dissolution, liquidation or winding up of the Company;

then the Company shall cause to be filed with the Trustee and to be mailed to each Holder of
Debentures at his address appearing on the Register provided for in Section 2.05 of this
Indenture, as promptly as possible but in any event at least ten calendar days prior to the
applicable date hereinafter specified, a notice stating (x) the date on which a record is to be
taken for the purpose of such dividend, distribution or rights or warrants, or, if a record is not
to be taken, the date as of which the holders of Common Stock of record to be entitled to such
dividend, distribution or rights are to be determined, or (y) the date on which such
reclassification, reorganization, consolidation, merger, sale, transfer, dissolution, liquidation
or winding up is expected to become effective or occur, and the date as of which it is expected
that holders of Common Stock of record shall be entitled to exchange their Common Stock for
securities or other property deliverable upon such reclassification, reorganization, consolidation,
merger, sale, transfer, dissolution, liquidation or winding up; provided that a separate notice
shall not be required under this Section if such notice has been effectively provided under another
provision of this Indenture. Failure to give such notice, or any defect therein, shall not affect
the legality or validity of such dividend, distribution, reclassification, reorganization,
consolidation, merger, sale, transfer, dissolution, liquidation or winding up.

     Section 10.12. Stockholder Rights Plans. If the rights provided for in any future rights
plan adopted by the Company have separated from the shares of
Common Stock in accordance with the provisions of the applicable stockholder rights agreement
so that the Holders of the Debentures would not be entitled to receive any rights in respect of
Common Stock issuable upon conversion of the Debentures, the Conversion Rate will be adjusted as
provided in Section 10.06(d). If such rights have not separated, any shares of Common Stock
delivered upon the conversion of Debentures shall be accompanied by such rights.

     Section 10.13. Settlement Upon Conversion. (a) Subject to Section 10.14, upon any conversion
of Debentures, the Company will deliver to converting

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Holders in respect of each $1,000 principal
amount of Debentures being converted a “Settlement Amount” equal to the sum of the Daily Settlement
Amounts for each of the 20 Trading Days during the Conversion Period. The Settlement Amount will
be delivered to converting Holders on the third Business Day immediately following the final
Trading Day of the Conversion Period.

     (b) For purposes of this Section 10.13, the following terms shall have the meanings
indicated:

     “Conversion Period” means, with respect to any Debentures, the 20 consecutive Trading Day
period beginning on the third Trading Day following the Company’s receipt of the Holder’s
Conversion Notice, except that (1) with respect to any Conversion Notice received after the date of
issuance of a notice of redemption pursuant to Article 3, “Conversion Period” means the 20
consecutive Trading Days beginning on the twenty-second scheduled Trading Day immediately preceding
the Redemption Date, (2) with respect to any conversion arising in connection with a Fundamental
Change, the “Conversion Period” means the 20 consecutive Trading Days beginning on the
twenty-second scheduled Trading Day immediately preceding the Fundamental Change Repurchase Date
relating to such Fundamental Change and (3) with respect to any Conversion Notice received during
the period beginning on the twenty-fourth scheduled Trading Day preceding the Maturity Date and
ending on the first scheduled Trading Day preceding the Maturity Date, the “Conversion Period”
means the 20 consecutive Trading Days beginning on the twenty-second scheduled Trading Day
immediately preceding the Maturity Date.

     “Daily Settlement Amount” for each $1,000 principal amount of Debentures, for each of the 20
Trading Days during the Conversion Period, shall consist of:

     (i) cash equal to the lesser of $50 and the Daily Conversion Value; and

     (ii) to the extent the Daily Conversion Value exceeds $50, a number of shares of
Common Stock equal to, (A) the difference between the Daily Conversion Value and $50,
divided by (B) the Volume Weighted Average Price of the Common Stock (or the consideration
into which the Common Stock has been converted in connection with
transactions to which Section 10.07 or Section 10.15 is applicable) for such day.

     “Daily Conversion Value” means, for any Trading Day, one-twentieth (1/20) of the product of
(1) the applicable Conversion Rate and (2) the Volume Weighted Average Price of the Common Stock
(or the consideration into which the Common Stock has been converted in connection with
transactions to which Section 10.07 or Section 10.15 is applicable) on such day.

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     For the purposes of determining the Daily Conversion Value and “Daily Settlement Amount” in
cases where Section 10.07 or Section 10.15 has resulted in the substitution of Applicable
Consideration or Public Company Acquiror Stock (as defined in Section 10.15) for Common Stock, the
following provisions shall apply: (i) if the Applicable Consideration or Public Company Acquiror
Stock includes securities for which the price can be determined in a manner contemplated by the
definition of “Volume Weighted Average Price,” then the value of such securities shall be
determined in accordance with the principles set forth in such definition; (ii) if the Applicable
Consideration includes other property (other than securities as to which clause (i) applies or
cash), then the value of such property shall be the fair market value of such property as
determined by the Company’s Board of Directors in good faith; and (iii) if the Applicable
Consideration includes cash, then the value of such cash shall be the amount thereof.

     “Volume Weighted Average Price” per share of Common Stock on any Trading Day means such price
as displayed on Bloomberg (or any successor service) page GLBL <equity> AQR (or an equivalent
source) in respect of the period from 9:30 a.m. to 4:00 p.m., New York City time, on such Trading
Day; or, if such price is not available, the Volume Weighted Average Price means the market value
per share of Common Stock on such day on a volume weighted basis as determined by a nationally
recognized independent investment banking firm retained for this purpose by the Company.

     Section 10.14. Settlement in Shares. (a) At any time before August 1, 2025 in its sole
discretion and without the consent of the Holders, the Company may irrevocably elect on a one time
basis to satisfy its conversion obligations entirely in shares of Common Stock (plus cash in lieu
of fractional shares) by notice to the Trustee and the Holders informing them of that election.
Simultaneously with providing this notice, the Company will disseminate a press release through Dow
Jones & Company, Inc. or Bloomberg Business News or PR Newswire or another newswire service
announcing such election or publish that information in the Wall Street Journal or another
newspaper of general circulation in The City of New York or on its website. If it so elects, the
Company will deliver to Holders tendering their Debentures for conversion following such notice a
number of shares of Common Stock (the “Settlement Shares”) equal to (i) the aggregate principal
amount of Debentures to be converted divided by $1,000, multiplied by (ii) the applicable
Conversion Rate on the Conversion Date.

     (b) If the foregoing election is made, then thereafter, the Company will deliver the
Settlement Shares to converting Holders on the third business day immediately following the related
Conversion Date for such Debentures, except that in respect of Debentures with a Conversion Date on
or after the twenty-fourth scheduled Trading Day prior to the Maturity Date, the Company will
deliver the Settlement Shares to converting Holders on the Maturity Date.

72

 

     (c) Notwithstanding Section 10.03, the Company will deliver cash in lieu of any fractional
shares of Common Stock deliverable in connection with delivery of the Settlement Shares based on
the Closing Sale Price of the Common Stock on the Conversion Date.

     Section 10.15. Conversion After a Public Acquirer Change of Control. (a) In the event of a
Public Acquirer Change of Control, the Company may, in lieu of making a Conversion Rate adjustment
under Section 10.05 or complying with Section 10.07, elect to adjust its obligations upon
conversion of the Debentures and the Conversion Rate such that from and after the effective date of
such Public Acquirer Change of Control, Holders of the Debentures shall be entitled to convert
their Debentures, in accordance with Section 10.02 hereof, into shares of Public Acquirer Common
Stock and the Conversion Rate in effect immediately before the effective time of the Public
Acquirer Change of Control shall be adjusted by multiplying it by a fraction:

     (1) the numerator of which shall be (A) in the case of a consolidation or merger,
pursuant to which the Common Stock is converted solely into cash, the cash paid or payable
per share of Common Stock or (B) in the case of any other Public Acquirer Change of
Control, the average of the Closing Sale Prices of the Common Stock for the five
consecutive Trading Days prior to but excluding the effective date of such Public Acquirer
Change of Control; and

     (2) the denominator of which shall be the average of the Closing Sale Prices of the
Public Acquirer Common Stock for the five consecutive Trading Days commencing on the
Trading Day next succeeding the effective date of such Public Acquirer Change of Control,

such adjustment to become effective upon the effective time of the Public Acquirer Change in
Control.

     (b) If the Company elects to adjust its conversion obligations under the Debentures in
accordance with this Section 10.15 in connection with a Public Acquirer Change of Control, the
Company shall provide notice to the Holders of its election at least 10 calendar days prior to the
anticipated effectiveness of the Public Acquirer Change of Control.

     (c) After the adjustment of the conversion obligation and Conversion Rate under this Section
10.15, the provisions for settlement upon conversion set
forth in Section 10.13 and Section 10.14 and the conditions specified in Section 10.01
shall continue to apply, all with such modifications as shall be set forth in a supplemental
indenture as determined in good faith by the Board of Directors or the public company acquirer.

     (d) If the Company elects to make the adjustment to the Conversion Rate described in Section
10.15 in connection with a Public Acquirer Change of

73

 

Control, Holders of Debentures will not be
entitled to the adjustment to the Conversion Rate provided by Section 10.06.

     (e) For purposes of this Section 10.15, the following terms shall have the meanings
indicated:

     “Public Acquirer Change of Control” means a Non-Stock Change of Control in which the acquirer
has a class of common stock, depositary receipts or other certificates representing common equity
interests traded on a U.S. national securities exchange (including The Nasdaq Global Select Market
or the Nasdaq Global Market) or that will be so traded or quoted when issued or exchanged in
connection with such Non-Stock Change of Control (the “Public Acquirer Common Stock”). If an
acquirer does not itself have a class of common stock satisfying the foregoing requirement, it will
be deemed to have Public Acquirer Common Stock if a corporation that directly or indirectly owns at
least a majority of the acquirer has a class of common stock, depositary receipts or other
certificates representing common equity interests satisfying the foregoing requirement, provided
that such corporation fully and unconditionally guarantees the Debentures, in which case all
references to Public Acquirer Common Stock will refer to such class of common stock. Majority
owned for these purposes means having “beneficial ownership” (as defined in Rule 13d-3 under the
Exchange Act) of more than 50% of the total voting power of all shares of the respective entity’s
capital stock that are entitled to vote generally in the election of directors.

     “Public Acquirer Common Stock” has the meaning specified in the definition of Public Acquirer
Change of Control.

ARTICLE 11

Miscellaneous

     Section 11.01. Trust Indenture Act Controls. If any provision of this Indenture limits,
qualifies or conflicts with another provision which is required to be included in this Indenture by
the TIA, the required provision shall control.

     Section 11.02. Notices. Any notice or communication shall be in writing and delivered in
person or mailed by first-class mail addressed as follows:

if to the Company:

Global Industries, Ltd.

8000 Global Drive

Carlyss, Louisiana 70665

Attention: General Counsel

if to the Trustee:

74

 

Wells Fargo Bank, National Association

Corporate Trust Services

625 Marquette Avenue

N9311-110

Minneapolis, MN 5547

Attention: Jeffery Rose

     The Company or the Trustee by notice to the other may designate additional or different
addresses for subsequent notices or communications.

     Any notice or communication mailed to a Debentureholder shall be mailed to the Debentureholder
at the Debentureholder’s address as it appears on the Register of the Registrar and shall be
sufficiently given if so mailed within the time prescribed.

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

     With respect to any Global Debenture, references in this Indenture to any required “mailing”
of a notice shall be deemed to refer to any other means of notice consistent with the Depositary’s
applicable procedures.

     Section 11.03. Communication by Debentureholders with Other Debentureholders.
Debentureholders may communicate pursuant to TIA § 312(b) with other Debentureholders with respect
to their rights under this Indenture or the Debentures. The Company, the Trustee, the Registrar
and anyone else shall have the protection of TIA § 312(c).

     Section 11.04. Certificate and Opinion as to Conditions Precedent. Upon any request or
application by the Company to the Trustee to take or refrain from taking any action under this
Indenture, the Company shall furnish to the Trustee:

     (a) an Officers’ Certificate in form and substance reasonably satisfactory to the Trustee
stating that, in the opinion of the signers, all conditions precedent, if any, provided for in this
Indenture relating to the proposed action have been complied with; and

     (b) an Opinion of Counsel in form and substance reasonably satisfactory to the Trustee stating
that, in the opinion of such counsel, all such conditions precedent have been complied with.

     Section 11.05. Statements Required in Certificate or Opinion. Each certificate or opinion
with respect to compliance with a covenant or condition provided for in this Indenture shall
include:

75

 

     (a) a statement that the individual making such certificate or opinion has read such covenant
or condition;

     (b) a brief statement as to the nature and scope of the examination or investigation upon
which the statements or opinions contained in such certificate or opinion are based;

     (c) a statement that, in the opinion of such individual, he has made such examination or
investigation as is necessary to enable him to express an informed opinion as to whether or not
such covenant or condition has been complied with; and

     (d) a statement as to whether or not, in the opinion of such individual, such covenant or
condition has been complied with.

     Section 11.06. When Debentures Disregarded. In determining whether the Debentureholders of
the required principal amount of Debentures have concurred in any direction, waiver or consent,
Debentures 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, except that, for the purpose of determining whether the Trustee shall be
protected in relying on any such direction, waiver or consent, only Debentures which the Trustee
knows are so owned shall be so disregarded. Subject to the foregoing, only Debentures outstanding
at the time shall be considered in any such determination.

     Section 11.07. Rules by Trustee, Paying Agent and Registrar. The Trustee may make reasonable
rules for action by or a meeting of Debentureholders. The Registrar and the Paying Agent may make
reasonable rules for their functions.

     Section 11.08. Legal Holidays. A “Legal Holiday” is a Saturday, a Sunday or a day on which
banking institutions are not required to be open in the State of New York or Minnesota. If a
payment date is a Legal Holiday, payment shall be made on the next succeeding day that is not a
Legal Holiday, and no interest shall accrue for the intervening period. If a regular record date
is a Legal Holiday, the record date shall not be affected.

     Section 11.09. GOVERNING LAW. THIS INDENTURE AND THE DEBENTURES SHALL BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

     Section 11.10. No Recourse Against Others. No recourse for the payment of the principal of
or, premium, if any, or interest on any Debentures, or for any claim based upon any Debentures or
otherwise in respect thereof, and no recourse under or upon any obligation, covenant or agreement
of the Company in this Indenture or in any supplemental indenture or in any Debentures, or because
of

76

 

the creation of any indebtedness represented thereby, shall be had against any incorporator,
stockholder, member, manager, employee, agent, officer or director, as such, past, present or
future, of the Company or of any successor thereto, either directly or through the Company or any
successor thereto, whether by virtue of any constitution, statute or rule of law, or by the
enforcement of any assessment or penalty or otherwise; it being expressly understood that all such
liability is hereby expressly waived and released as a condition of, and as a consideration for,
the execution of this Indenture and the issue of the Debentures.

     Section 11.11. Successors. All agreements of the Company in this Indenture and the
Debentures shall bind its successors. All agreements of the Trustee in this Indenture shall bind
its successors.

     Section 11.12. Multiple Originals. The parties may sign any number of copies of this
Indenture. Each signed copy shall be an original, but all of them together represent the same
agreement. One signed copy is enough to prove this Indenture.

     Section 11.13. Table of Contents; Headings. The table of contents, cross-reference sheet and
headings of the Articles and Sections of this Indenture have been inserted for convenience of
reference only, are not intended to be considered a part hereof and shall not modify or restrict
any of the terms or provisions hereof.

     Section 11.14. Calculations in Respect of the Debentures. Except as otherwise provided in
this Indenture, the Company will be responsible for making all calculations called for under the
Indenture or the Debentures. These calculations include, but are not limited to, determinations of
the Closing Sale Price of the Common Stock, accrued interest payable on the Debentures, the
Conversion Rate and Conversion Price. The Company or its agents will make all these calculations in
good faith and, absent manifest error, such calculations will be final and binding on Holders of
the Debentures. The Company will provide a schedule of these calculations to each of the Trustee
and the Conversion Agent upon request, and each of the Trustee and Conversion Agent is entitled to
rely upon the accuracy of such calculations without independent verification. The Trustee will
forward these calculations to any Holder of the Debentures upon the request of that Holder.

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

	 	 	 	 	 
	 	GLOBAL INDUSTRIES, LTD., as Issuer

 	 
	 	By:  	/s/ Peter S. Atkinson	 
	 	 	Name:  	Peter S. Atkinson	 
	 	 	Title:  	President and Chief Financial Officer	 
	 
	 	WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee,

 	 
	 	By:  	/s/ Jeffery Rose	 
	 	 	Name:  	Jeffery Rose	 
	 	 	Title:  	Vice President	 
	 

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EXHIBIT A

[FORM OF FACE OF DEBENTURE]

[Global Debenture Legend]

     UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
COMPANY, A NEW YORK CORPORATION (“DTC”), NEW YORK, NEW YORK, 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 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.

     TRANSFERS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO
NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR’S NOMINEE AND TRANSFERS OF PORTIONS OF
THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET
FORTH IN THE INDENTURE REFERRED TO ON THE REVERSE HEREOF.

[Restricted Security Legend]

     THE SECURITIES EVIDENCED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE “SECURITIES ACT”). NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY
BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE
ABSENCE OF SUCH REGISTRATION OR UNLESS THE TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, THE
REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. EACH PURCHASER OF THE SECURITY EVIDENCED HEREBY IS
NOTIFIED THAT THE SELLER MAY BE RELYING ON THE EXEMPTION FROM SECTION 5 OF THE SECURITIES ACT
PROVIDED BY RULE 144A THEREUNDER. THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF

     (1) REPRESENTS THAT IT IS A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE
SECURITIES ACT),

 

 

     (2) AGREES THAT IT WILL NOT PRIOR TO (X) THE DATE WHICH IS TWO YEARS (OR SUCH SHORTER PERIOD
OF TIME AS PERMITTED BY RULE 144(K) UNDER THE SECURITIES ACT OR ANY SUCCESSOR PROVISION THEREUNDER)
AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF (OR OF ANY PREDECESSOR OF THIS SECURITY) OR THE
LAST DAY ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS SECURITY (OR
ANY PREDECESSOR OF THIS SECURITY) AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE REQUIRED BY APPLICABLE
LAW (THE “RESALE RESTRICTION TERMINATION DATE”), OFFER, SELL OR OTHERWISE TRANSFER THIS SECURITY
EXCEPT (A) TO THE COMPANY, (B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BEEN DECLARED
EFFECTIVE UNDER THE SECURITIES ACT, (C) FOR SO LONG AS THE SECURITIES ARE ELIGIBLE FOR RESALE
PURSUANT TO RULE 144A, TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS
DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT
OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN
RELIANCE ON RULE 144A OR (D) PURSUANT TO ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT AND

     (3) AGREES THAT IT WILL GIVE TO EACH PERSON TO WHOM THIS SECURITY IS TRANSFERRED A NOTICE
SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND;

PROVIDED THAT THE COMPANY, THE TRUSTEE AND THE REGISTRAR SHALL HAVE THE RIGHT PRIOR TO ANY SUCH
OFFER, SALE OR TRANSFER PURSUANT TO CLAUSE (2)(D) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL,
CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM. THIS LEGEND WILL BE REMOVED
UPON THE REQUEST OF THE HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

 

 

			
	No.                    
	 	$                    

2.75% Senior Convertible Debenture due 2027

CUSIP No.:                     

     Global Industries, Ltd., a Louisiana corporation, promises to pay to [Cede & Co., or
registered assigns]1                     , the principal sum of                      Dollars [, as
revised by the Schedule of Increases or Decreases in Global Debenture attached hereto,]2
on August 1, 2027.

     Interest Payment Dates: February 1 and August 1.

     Record Dates: January 15 and July 15.

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

     This Debenture shall not be valid or become obligatory for any purpose until the certificate
of authentication hereon shall have been manually signed by the Trustee or a duly authorized
authenticating agent under the Indenture.

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

	 	 	 	 	 
	 	GLOBAL INDUSTRIES, LTD., as Issuer

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 
	 

Dated:

 

			
	1	 	Use bracketed language for a Global
Debenture.
	 
	2	 	Use bracketed language for Global Debenture.

 

 

	 	 	 	 	 
	TRUSTEE’S CERTIFICATE OF
     AUTHENTICATION
	 
	
WELLS FARGO BANK, NATIONAL
ASSOCIATION, as Trustee, certifies
that this is one of the Debentures
referred to in the Indenture.
 
	 	 
	 
	By:  	 	 	 
	 	Authorized Signatory 	 	 
	 	 	 	 

 

 

	 	 	 	 	 

[FORM OF REVERSE SIDE OF DEBENTURE]

2.75% Senior Convertible Debenture due 2027

	1.	 	Interest

     (a) GLOBAL INDUSTRIES, LTD., a Louisiana corporation (such corporation, and its successors and
assigns under the Indenture hereinafter referred to, being herein called the “Company”), promises
to pay interest on the principal amount of this Debenture at the rate of 2.75% per annum. The
Company will pay interest semiannually on February 1 and August 1 of each year commencing on
February 1, 2008. Interest on the Debenture will accrue from the most recent date to which
interest has been paid or, if no interest has been paid, from July 27, 2007. Interest will be
computed on the basis of a 360-day year of twelve 30-day months. If a payment date is not a
Business Day, payment will be made on the next succeeding Business Day, and no additional interest
will accrue in respect of such payment by virtue of the payment being made on such later date.

     (b) The Holder of this Debenture is entitled to the benefits of a Registration Rights
Agreement, dated as of July 27, 2007, among the Company, and the Initial Purchasers named therein
(the “Registration Rights Agreement”) providing for the payment of additional interest. The
Company may also elect to pay additional interest on this Debenture as a remedy for an Event of
Default relating to a failure to file with the Trustee reports required under the Exchange Act.

     (c) Except as otherwise specifically set forth, all references herein to “interest” include
Additional Interest under the Registration Rights Agreement and additional interest that the
Company elects to pay in connection with a failure to file reports required under the Exchange Act.

	2.	 	Paying Agent, Registrar and Conversion Agent

     Initially, Wells Fargo Bank, National Association, a national banking association (the
“Trustee”), will act as Paying Agent, Registrar and Conversion Agent. The Company may appoint and
change any Paying Agent, Registrar or co-registrar or conversion agent without notice. The Company
or any of its domestically incorporated Wholly Owned Subsidiaries may act as Paying Agent,
Registrar or co-registrar, or conversion agent.

	3.	 	Indenture

     The Company issued the Debentures under an Indenture dated as of July 27, 2007 (the
“Indenture”), among the Company and the Trustee. The terms of the Debentures include those stated
in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of
1939 (15 U.S.C. §§ 77aaa-77bbbb) as in effect on the date of the Indenture (the “TIA”). Terms
defined in

 

 

the Indenture and not defined herein have the meanings ascribed thereto in the Indenture
(except as specifically provided in Section 1(b)). The Debentures are subject to all such terms,
and Debentureholders are referred to the Indenture and the TIA for a statement of those terms.

     This Debenture is one of the Debentures referred to in the Indenture issued in an initial
aggregate principal amount of $325 million (up to $375 million if the option of the Initial
Purchasers to purchase additional Debentures is exercised in full). Additional Debentures may be
issued in accordance with the Indenture. The Indenture also imposes limitations on the ability of
the Company to consolidate or merge with or into any other Person or convey, transfer or lease all
or substantially all of the property of the Company.

	5.	 	Optional Redemption

     The Debentures will not be redeemable at the option of the Company prior to August 1, 2014.
At any time on or after August 1, 2014, the Debentures will be redeemable at the option of the
Company, in whole or in part, on not less than 30 calendar days’ nor more than 60 calendar days’
prior notice, at a redemption price equal to 100% of the principal amount of the Debentures being
redeemed, plus accrued and unpaid interest to the redemption date (subject to the right of Holders
of record on the relevant record date to receive interest due on the relevant interest payment
date).

	6.	 	Repurchase of Debentures at the Option of Debentureholders

     If a Fundamental Change occurs at any time prior to maturity of the Debentures, this Debenture
will be subject to a repurchase on the terms and conditions of the Indenture, at the option of the
Holder, on a Fundamental Change Repurchase Date, specified by the Company.

     Subject to the terms and conditions of the Indenture, each Holder shall have the right, at
such Holder’s option, to require the Company to repurchase all or any portion of the Debentures
held by such Holder, on August 1, 2017 and August 1, 2022.

	7.	 	Conversion

     Upon the occurrence of certain events specified in the Indenture and in compliance with the
provisions of the Indenture, on or prior to the close of business on the Business Day immediately
preceding the Maturity Date of this Debenture, the Holder hereof has the right, at its option, to
convert each $1,000 principal amount of this Debenture into a combination of cash and Common Stock,
determined as set forth in the Indenture, based on a Conversion Rate of 28.1821 shares of Common
Stock per $1,000 principal amount of Debentures, as the same may be adjusted pursuant to the terms
of the Indenture.

 

 

     At any time before August 1, 2025, the Company may irrevocably elect, in its sole discretion
and without the consent of the Holders, by notice to the Trustee and the Holders, to satisfy all of
the Company’s conversion obligations arising after the time of such notice in shares of Common
Stock. Any such election will apply to all Debentures tendered for conversion following the date
of such notice.

	8.	 	Denominations, Transfer, Exchange

     The Debentures are in registered form without coupons in denominations of $1,000 and whole
multiples of $1,000. A Debentureholder may transfer or exchange Debentures in accordance with the
Indenture. Upon any transfer or exchange, the Registrar and the Trustee may require a
Debentureholder, among other things, to furnish appropriate endorsements or transfer documents and
to pay any taxes required by law or permitted by the Indenture.

	9.	 	Persons Deemed Owners

     The registered Holder of this Debenture may be treated as the owner of it for all purposes.

	10.	 	Defaults and Remedies

     If an Event of Default (other than an Event of Default relating to certain events of
bankruptcy, insolvency or reorganization of the Company) occurs and is continuing, the Trustee or
the Holders of at least 25% in principal amount of the outstanding Debentures may declare the
principal of and accrued but unpaid interest on all the Debentures to be due and payable. If an
Event of Default relating to certain events of bankruptcy, insolvency or reorganization of the
Company occurs, the principal of and interest on all the Debentures will become immediately due and
payable without any declaration or other act on the part of the Trustee or any Debentureholders.

	11.	 	No Recourse Against Others

     A director, officer, employee or stockholder, as such, of the Company shall not have any
liability for any obligations of the Company under the Debentures or the Indenture or for any claim
based on, in respect of or by reason of such obligations or their creation. By accepting a
Debenture, each Debentureholder waives and releases all such liability. The waiver and release are
part of the consideration for the issue of the Debentures.

	12.	 	Authentication

     This Debenture shall not be valid until an authorized signatory of the Trustee (or an
authenticating agent) manually signs the certificate of authentication on the other side of this
Debenture.

	13.	 	Abbreviations

 

 

     Customary abbreviations may be used in the name of a Debentureholder or an assignee, such as
TEN COM (=tenants in common), TEN ENT (=tenants by the entireties), JT TEN (=joint tenants with
rights of survivorship and not as tenants in common), CUST (=custodian), and U/G/M/A (=Uniform Gift
to Minors Act).

	14.	 	GOVERNING LAW

     THIS DEBENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE
OF NEW YORK.

	15.	 	CUSIP and ISIN Numbers

     Pursuant to a recommendation promulgated by the Committee on Uniform Debenture Identification
Procedures, the Company has caused CUSIP and ISIN numbers to be printed on the Debentures and has
directed the Trustee to use CUSIP and ISIN numbers in notices of redemption as a convenience to
Debentureholders. No representation is made as to the accuracy of such numbers either as printed
on the Debentures or as contained in any notice of redemption and reliance may be placed only on
the other identification numbers placed thereon.

     The Company will furnish to any Holder of Debentures upon written request and without charge
to the Holder a copy of the Indenture which has in it the text of this Debenture.

 

 

CONVERSION NOTICE

	 	 	 
	TO:

	 	GLOBAL INDUSTRIES, LTD.

WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee

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

Dated:                                         

	 	 	 	 	 
	 	 	 
	 	
 	 
	 	 	 
	 	
 
	 	Signature(s) 	 
	 
	 	Signature(s) must be guaranteed by an

“eligible guarantor institution” meeting the

requirements of the Registrar, which

requirements include membership or

participation in the Security Transfer Agent

Medallion Program (“STAMP”) or such other

“signature guarantee program” as may be

determined by the Registrar in addition to,

or in substitution for, STAMP, all in

accordance with the Securities Exchange Act

of 1934, as amended.

 	 
	 	
 	 
	 	Signature Guarantee 	 

 

 

	 	 	 	 	 

     Fill in the registration of shares of Common Stock, if any, to be issued, and Debentures, if
any, to be delivered, and the person to whom cash, if any, and payment for fractional shares, if
any, is to be made, if other than to and in the name of the registered Holder:

Please print name and address

                                                            

(Name)

                                                            

(Street Address)

                                                            

(City, State and Zip Code)

Principal amount to be converted

     (if less than all):

$                                        

Social Security or Other Taxpayer

     Identification Number:

                                                            

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

 

 

REPURCHASE NOTICE

	 	 	 
	TO:

	 	GLOBAL INDUSTRIES, LTD.

WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee

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

Dated:                                    

	 	 	 	 	 
	 	Signature(s): 	
 	 
	 	 	 
	 	 	
 	 

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

     Debenture Certificate Number:                                         

     Principal amount to be repurchased (if less than all, must be $1,000 or whole multiples
thereof):                                         

     Social Security or Other Taxpayer Identification Number:                     

 

 

ASSIGNMENT

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

     In connection with any transfer of the Debentures prior to the expiration of the holding
period applicable to sales thereof under Rule 144(k) under the Securities Act (or any successor
provision) (other than any transfer pursuant to a registration statement that has been declared
effective under the Securities Act), the undersigned confirms that such Debentures are being
transferred:

	o  	 	To Global Industries, Ltd. or a subsidiary thereof; or
	 
	o 	 	To a “qualified institutional buyer” 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 a Registration Statement which has been declared effective under the
Securities Act of 1933, as amended, and which continues to be effective at the time of
transfer;

and unless the Debentures has been transferred to Global Industries, Ltd. or a subsidiary thereof,
the undersigned confirms that such Debentures are not being transferred to an “affiliate” of the
Company as defined in Rule 144 under the Securities Act of 1933, as amended.

Unless one of the boxes is checked, the Trustee will refuse to register any of the Debentures
evidenced by this certificate in the name of any person other than the registered Holder thereof.

 

 

Dated:                                 

	 	 	 	 	 
	 	 	 
	 	
 	 
	 	 	 
	 	
 	 
	 	Signature(s) 	 
	 	 	 
	 	Signature(s) must be guaranteed by an

“eligible guarantor institution” meeting the

requirements of the Registrar, which

requirements include membership or

participation in the Security Transfer Agent

Medallion Program (“STAMP”) or such other

“signature guarantee program” as may be

determined by the Registrar in addition to,

or in substitution for, STAMP, all in

accordance with the Securities Exchange Act

of 1934, as amended.

 	 
	 	
 	 
	 	Signature Guarantee 	 

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

 

 

SCHEDULE OF INCREASES AND DECREASES IN GLOBAL DEBENTURE3

     The following increases or decreases in this Global Debenture have been made:

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

 

			
	3	 	For Global Securities only.

 

 

EXHIBIT B

FORM OF RESTRICTIVE LEGEND FOR

COMMON STOCK ISSUED UPON CONVERSION

     THE SECURITIES EVIDENCED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE “SECURITIES ACT”). NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY
BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE
ABSENCE OF SUCH REGISTRATION OR UNLESS THE TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, THE
REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. EACH PURCHASER OF THE SECURITY EVIDENCED HEREBY IS
NOTIFIED THAT THE SELLER MAY BE RELYING ON THE EXEMPTION FROM SECTION 5 OF THE SECURITIES ACT
PROVIDED BY RULE 144A THEREUNDER. THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF

     (1) REPRESENTS THAT IT IS A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE
SECURITIES ACT),

     (2) AGREES THAT IT WILL NOT PRIOR TO (X) THE DATE WHICH IS TWO YEARS (OR SUCH SHORTER PERIOD
OF TIME AS PERMITTED BY RULE 144(K) UNDER THE SECURITIES ACT OR ANY SUCCESSOR PROVISION THEREUNDER)
AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF (OR OF ANY PREDECESSOR OF THIS SECURITY) OR THE
LAST DAY ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS SECURITY (OR
ANY PREDECESSOR OF THIS SECURITY) AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE REQUIRED BY APPLICABLE
LAW (THE “RESALE RESTRICTION TERMINATION DATE”), OFFER, SELL OR OTHERWISE TRANSFER THIS SECURITY
EXCEPT (A) TO THE COMPANY, (B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BEEN DECLARED
EFFECTIVE UNDER THE SECURITIES ACT, (C) FOR SO LONG AS THE SECURITIES ARE ELIGIBLE FOR RESALE
PURSUANT TO RULE 144A, TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS
DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT
OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN
RELIANCE ON RULE 144A OR (D) PURSUANT TO ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT AND

B-1

 

     (3) AGREES THAT IT WILL GIVE TO EACH PERSON TO WHOM THIS SECURITY IS TRANSFERRED A NOTICE
SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND;

PROVIDED THAT THE COMPANY AND ITS TRANSFER AGENT SHALL HAVE THE RIGHT PRIOR TO ANY SUCH OFFER, SALE
OR TRANSFER PURSUANT TO CLAUSE (2)(D) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL,
CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM. THIS LEGEND WILL BE REMOVED
UPON THE REQUEST OF THE HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

B-2

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