Document:

exv4w1

Exhibit 4.1

Execution Version

GASCO ENERGY, INC.

5.50% Convertible Senior Notes due 2015

INDENTURE

Dated as of June 25, 2010

WELLS FARGO BANK, NATIONAL ASSOCIATION

TRUSTEE

 

 

TABLE OF CONTENTS

ARTICLE 1

Definitions And Other Provisions Of General Application

	 	 	 	 	 	 	 

	Section 1.01.	 	Definitions
	 	 	1	 
	Section 1.02.	 	Other Definitions
	 	 	9	 
	Section 1.03.	 	Incorporation by Reference of Trust Indenture Act
	 	 	10	 
	Section 1.04.	 	Rules of Construction
	 	 	11	 
	Section 1.05.	 	Acts of Holders
	 	 	11	 
	 	 	 
	 	 	 	 
	 	 	ARTICLE 2

The Notes
	 	 	 	 
	 	 	 
	 	 	 	 
	Section 2.01.	 	Designation Amount and Issue of Notes
	 	 	12	 
	Section 2.02.	 	Form of Notes
	 	 	12	 
	Section 2.03.	 	Execution and Authentication
	 	 	13	 
	Section 2.04.	 	Note Registrar, Paying Agent and Conversion Agent
	 	 	13	 
	Section 2.05.	 	Paying Agent to Hold Money and Notes in Trust
	 	 	14	 
	Section 2.06.	 	Noteholder Lists
	 	 	14	 
	Section 2.07.	 	Transfer and Exchange; Restrictions on Transfer; Depositary
	 	 	14	 
	Section 2.08.	 	Replacement Notes
	 	 	18	 
	Section 2.09.	 	Outstanding Notes; Determination of Holders’ Action
	 	 	18	 
	Section 2.10.	 	Temporary Notes
	 	 	19	 
	Section 2.11.	 	Cancellation
	 	 	19	 
	Section 2.12.	 	Persons Deemed Owners
	 	 	19	 
	Section 2.13.	 	CUSIP Numbers
	 	 	20	 
	Section 2.14.	 	Default Interest
	 	 	20	 
	 	 	 
	 	 	 	 
	 	 	ARTICLE 3

Redemption and Repurchase Upon A Change Of Control
	 	 	 	 
	 	 	 
	 	 	 	 
	Section 3.01.	 	Company’s Right to Redeem
	 	 	20	 
	Section 3.02.	 	Notice of Optional Redemption; Selection of Notes
	 	 	20	 
	Section 3.03.	 	Payment of Notes Called for Redemption by the Company
	 	 	22	 
	Section 3.04.	 	Conversion Arrangement on Call for Redemption
	 	 	23	 
	Section 3.05.	 	Purchase of Notes at Option of the Holder Upon Change
of Control
	 	 	23	 
	Section 3.06.	 	Effect of Change of Control Purchase Notice
	 	 	31	 
	Section 3.07.	 	Deposit of Change of Control Purchase Price
	 	 	32	 
	Section 3.08.	 	Notes Purchased in Part
	 	 	32	 
	Section 3.09.	 	Covenant to Comply with Securities Laws upon Purchase of Notes
	 	 	32	 
	Section 3.10.	 	Repayment to the Company
	 	 	33	 
	 	 	 
	 	 	 	 
	 	 	ARTICLE 4

Covenants
	 	 	 	 
	 	 	 
	 	 	 	 
	Section 4.01.	 	Payment of Principal, Premium, Interest on the Notes
	 	 	33	 
	Section 4.02.	 	Reports by the Company
	 	 	33	 
	Section 4.03.	 	Compliance Certificate
	 	 	35	 
	Section 4.04.	 	Further Instruments and Acts
	 	 	35	 

i

 

	 	 	 	 	 	 	 

	Section 4.05.	 	Maintenance of Office or Agency
	 	 	35	 
	Section 4.06.	 	Delivery of Certain Information
	 	 	35	 
	Section 4.07.	 	Existence
	 	 	36	 
	Section 4.08.	 	Maintenance of Properties
	 	 	36	 
	Section 4.09.	 	Payment of Taxes and Other Claims
	 	 	36	 
	Section 4.10.	 	Subsidiary Guarantees
	 	 	36	 
	Section 4.11.	 	Limitation on Indebtedness
	 	 	36	 
	Section 4.12.	 	Limitation on Liens
	 	 	37	 
	Section 4.13.	 	Limitations on Dividends
	 	 	37	 
	Section 4.14.	 	Listing
	 	 	37	 
	Section 4.15.	 	Shareholder Approval
	 	 	38	 
	 	 	 
	 	 	 	 
	 	 	ARTICLE 5

Successor Corporation
	 	 	 	 
	 	 	 
	 	 	 	 
	Section 5.01.	 	When Company May Merge Or Transfer Assets
	 	 	40	 
	 	 	 
	 	 	 	 
	 	 	ARTICLE 6

Defaults And Remedies
	 	 	 	 
	 	 	 
	 	 	 	 
	Section 6.01.	 	Events of Default
	 	 	41	 
	Section 6.02.	 	Acceleration
	 	 	43	 
	Section 6.03.	 	Other Remedies
	 	 	43	 
	Section 6.04.	 	Waiver of Past Defaults
	 	 	44	 
	Section 6.05.	 	Control By Majority
	 	 	44	 
	Section 6.06.	 	Limitation On Suits
	 	 	44	 
	Section 6.07.	 	Rights of Holders to Receive Payment
	 	 	45	 
	Section 6.08.	 	Collection Suit by Trustee
	 	 	45	 
	Section 6.09.	 	Trustee May File Proofs of Claim
	 	 	45	 
	Section 6.10.	 	Priorities
	 	 	46	 
	Section 6.11.	 	Undertaking For Costs
	 	 	46	 
	Section 6.12.	 	Waiver Of Stay, Extension Or Usury Laws
	 	 	46	 
	 	 	 
	 	 	 	 
	 	 	ARTICLE 7

Trustee
	 	 	 	 
	 	 	 
	 	 	 	 
	Section 7.01.	 	Duties And Responsibilities Of The Trustee; During Default;
Prior To Default
	 	 	47	 
	Section 7.02.	 	Certain Rights of the Trustee
	 	 	48	 
	Section 7.03.	 	Trustee not Responsible for Recitals, Dispositions of Notes or
Application of Proceeds Thereof
	 	 	49	 
	Section 7.04.	 	Trustee and Agents May Hold Notes; Collections, Etc
	 	 	49	 
	Section 7.05.	 	Moneys Held by Trustee
	 	 	49	 
	Section 7.06.	 	Compensation and Indemnification of Trustee and Its Prior Claim
	 	 	50	 
	Section 7.07.	 	Right of Trustee to Rely on Officers’ Certificate, Etc
	 	 	50	 
	Section 7.08.	 	Conflicting Interests
	 	 	51	 
	Section 7.09.	 	Persons Eligible for Appointment as Trustee
	 	 	51	 
	Section 7.10.	 	Resignation and Removal; Appointment of Successor Trustee
	 	 	51	 
	Section 7.11.	 	Acceptance of Appointment by Successor Trustee
	 	 	52	 
	Section 7.12.	 	Merger, Conversion, Consolidation or Succession
to Business of Trustee
	 	 	53	 

ii

 

	 	 	 	 	 	 	 

	Section 7.13.	 	Preferential Collection of Claims Against the Company
	 	 	53	 
	Section 7.14.	 	Reports By The Trustee
	 	 	53	 
	Section 7.15.	 	Trustee to Give Notice of Default, But May Withhold in
Certain Circumstances
	 	 	53	 
	 	 	 
	 	 	 	 
	 	 	ARTICLE 8

DISCHARGE OF INDENTURE
	 	 	 	 
	 	 	 
	 	 	 	 
	Section 8.01.	 	Discharge Of Indenture
	 	 	54	 
	Section 8.02.	 	Paying Agent to Repay Monies Held
	 	 	54	 
	Section 8.03.	 	Return Of Unclaimed Monies
	 	 	54	 
	 	 	 
	 	 	 	 
	 	 	ARTICLE 9

SUPPLEMENTAL INDENTURES
	 	 	 	 
	 	 	 
	 	 	 	 
	Section 9.01.	 	Without Consent Of Holders
	 	 	54	 
	Section 9.02.	 	With Consent Of Holders
	 	 	55	 
	Section 9.03.	 	Compliance with Trust Indenture Act
	 	 	56	 
	Section 9.04.	 	Revocation and Effect of Consents, Waivers and Actions
	 	 	56	 
	Section 9.05.	 	Notation on or Exchange of Notes
	 	 	57	 
	Section 9.06.	 	Trustee to Sign Supplemental Indentures
	 	 	57	 
	Section 9.07.	 	Effect of Supplemental Indentures; Guaranty
	 	 	57	 
	 	 	 
	 	 	 	 
	 	 	ARTICLE 10

CONVERSION
	 	 	 	 
	 	 	 
	 	 	 	 
	Section 10.01.	 	Conversion Right and Conversion Price
	 	 	57	 
	Section 10.02.	 	Exercise of Conversion Right
	 	 	58	 
	Section 10.03.	 	Fractions of Shares
	 	 	59	 
	Section 10.04.	 	Limitations on Issuance of Common Stock
	 	 	60	 
	Section 10.05.	 	Automatic Conversion
	 	 	61	 
	Section 10.06.	 	Conversion Make-Whole Payment
	 	 	63	 
	Section 10.07.	 	Adjustment of Conversion Price
	 	 	64	 
	Section 10.08.	 	Notice of Adjustments of Conversion Price
	 	 	72	 
	Section 10.09.	 	Notice Prior to Certain Actions
	 	 	72	 
	Section 10.10.	 	Company to Reserve Common Stock and Preferred Stock
	 	 	73	 
	Section 10.11.	 	Taxes on Conversions
	 	 	73	 
	Section 10.12.	 	Covenant as to Conversion Stock
	 	 	73	 
	Section 10.13.	 	Cancellation of Converted Notes
	 	 	73	 
	Section 10.14.	 	Effect of Reclassification, Consolidation, Merger or Sale
	 	 	74	 
	Section 10.15.	 	Responsibility of Trustee for Conversion Provisions
	 	 	75	 
	Section 10.16.	 	Cash Damages
	 	 	75	 
	Section 10.17.	 	Application of Conversion Amounts
	 	 	76	 
	 	 	 
	 	 	 	 
	 	 	ARTICLE 11

MISCELLANEOUS
	 	 	 	 
	 	 	 
	 	 	 	 
	Section 11.01.	 	Trust Indenture Act Controls
	 	 	76	 
	Section 11.02.	 	Notices
	 	 	76	 
	Section 11.03.	 	Communication by Holders with Other Holders
	 	 	77	 
	Section 11.04.	 	Certificate and Opinion as to Conditions Precedent
	 	 	77	 

iii

 

	 	 	 	 	 	 	 

	Section 11.05.	 	Statements Required in Certificate or Opinion
	 	 	78	 
	Section 11.06.	 	Separability Clause
	 	 	78	 
	Section 11.07.	 	Rules by Trustee, Paying Agent, Conversion Agent and Note Registrar
	 	 	78	 
	Section 11.08.	 	Legal Holidays
	 	 	78	 
	Section 11.09.	 	GOVERNING LAW
	 	 	78	 
	Section 11.10.	 	No Recourse Against Others
	 	 	78	 
	Section 11.11.	 	Successors
	 	 	79	 
	Section 11.12.	 	Benefits of Indenture
	 	 	79	 
	Section 11.13.	 	Table of Contents, Heading, Etc
	 	 	79	 
	Section 11.14.	 	Authenticating Agent
	 	 	79	 
	Section 11.15.	 	Execution In Counterparts
	 	 	80	 
	Section 11.16.	 	Other Remedies
	 	 	80	 

	 	 	 

	Exhibit A	 	Form of Note

	Exhibit B	 	Form of Guaranty

	Exhibit C	 	Subordination Terms

	Exhibit D	 	Form of Preferred C of D

Schedule 4.11 Closing Date Indebtedness

iv

 

CROSS REFERENCE TABLE*

	 	 	 	 	 
	TIA SECTION	 	INDENTURE SECTION	 
	310(a)(1)
	 	 	7.09	 
	(a)(2)
	 	 	7.09	 
	(a)(3)
	 	 	N.A.	 
	(a)(4)
	 	 	N.A.	 
	(a)(5)
	 	 	7.09	 
	(b)
	 	 	7.08; 7.09; 7.10; 7.11	 
	(c)
	 	 	N.A.	 
	311(a)
	 	 	7.13	 
	(b)
	 	 	7.13	 
	(c)
	 	 	N.A.	 
	312(a)
	 	 	2.06	 
	(b)
	 	 	11.03	 
	(c)
	 	 	11.03	 
	313(a)
	 	 	7.14(a)	 
	(b)(1)
	 	 	7.14(a)	 
	(b)(2)
	 	 	7.14(a)	 
	(c)
	 	 	11.02	 
	(d)
	 	 	7.14(b)	 
	314(a)
	 	 	4.02; 4.03; 11.02	 
	(b)
	 	 	N.A.	 
	(c)(1)
	 	 	11.04	 
	(c)(2)
	 	 	11.04	 
	(c)(3)
	 	 	N.A.	 
	(d)
	 	 	N.A.	 
	(e)
	 	 	11.05	 
	(f)
	 	 	N.A.	 
	315(a)
	 	 	7.01	 
	(b)
	 	 	7.15; 11.02	 
	(c)
	 	 	7.01	 
	(d)
	 	 	7.01	 
	(e)
	 	 	6.11	 
	316(a) (last sentence)
	 	 	2.09	 
	(a)(1)(A)
	 	 	6.05	 
	(a)(1)(B)
	 	 	6.04	 
	(a)(2)
	 	 	N.A.	 
	(b)
	 	 	6.07	 
	317(a)(1)
	 	 	6.08	 
	(a)(2)
	 	 	6.09	 
	(b)
	 	 	2.05	 
	318(a)
	 	 	11.01	 

 

			
	N.A. means Not Applicable

	Note: This Cross Reference Table shall not, for any purpose, be deemed to be part of the
Indenture.

v

 

     INDENTURE dated as of June 25, 2010 between GASCO ENERGY, INC., a Nevada corporation (the
“Company”), and WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association, as Trustee
hereunder (the “Trustee”).

RECITALS OF THE COMPANY

     The Company has duly authorized the creation of an issue of its 5.50% Convertible Senior Notes
due 2015 (herein called the “Notes”) of substantially the tenor and amount hereinafter set forth,
and to provide therefor the Company has duly authorized the execution and delivery of this
Indenture.

     All things necessary to make the Notes, when the Notes are executed by the Company and
authenticated and delivered hereunder, the valid and legally binding obligations of the Company,
and to make this Indenture a valid agreement of the Company, in accordance with their and its
terms, have been done. Further, all things necessary to duly authorize the issuance of the Common
Stock of the Company issuable upon the conversion of the Notes, and to duly reserve for issuance
the number of shares of Common Stock issuable upon such conversion, have been done.

     This Indenture is subject to, and shall be governed by, the provisions of the Trust Indenture
Act of 1939, as amended, that are required to be a part of and to govern indentures qualified under
the Trust Indenture Act of 1939, as amended.

     NOW, THEREFORE, THIS INDENTURE WITNESSETH:

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

ARTICLE 1

Definitions And Other Provisions Of General Application

     Section 1.01. Definitions. For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

     (1) the terms defined in this Article have the meanings assigned to them in this Article and
include the plural as well as the singular;

     (2) all accounting terms not otherwise defined herein have the meanings assigned to them in
accordance with GAAP; and

     (3) the words “herein,” “hereof” and “hereunder” and other words of similar import refer to
this Indenture as a whole and not to any particular Article, Section or other subdivision.

     “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
purposes of this definition, “control” when used with respect to any specified person means the
power to direct or cause the direction of the management and policies of such

1

 

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.

     “Beneficial Holder” means (i) as applied to a Certificated Note, the Person in whose name the
Certificated Note is registered on the Note Registrar’s books and (ii) as applied to a Global Note,
any Person who beneficially owns a beneficial interest in such Global Note.

     “Board of Directors” means either the board of directors of the Company, or any duly
authorized committee of such board.

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

     “Business Day” means each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day
on which the banking institutions in The City of New York or the city in which the Corporate Trust
Office is located are authorized or obligated by law or executive order to close or be closed.

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

     “Closing Date” has the meaning specified in the Exchange Agreements.

     “Closing Price” of any security on any date of determination means:

     (1) the closing sale price (or, if no closing sale price is reported, the last reported sale
price) of such security on the NYSE Amex (or successor thereto) on such date;

     (2) if such security is not listed for trading on the NYSE Amex on any such date, the closing
sale price as reported in the composite transactions for the principal U.S. national or regional
securities exchange on which such security is so listed;

     (3) if such security is not so reported, the last quoted bid price for such security in the
over-the-counter market as reported by the OTC Bulletin Board (or successor thereto) or, if not
quoted thereon, by Pink OTC Markets Inc. (or successor thereto) or similar organization; or

     (4) if such bid price is not available, the average of the mid-point of the last bid and ask
prices of such security on such date from at least three nationally recognized independent
investment banking firms retained for this purpose by the Company.

     “Common Stock” means the common stock, par value $.0001 per share, of the Company, authorized
at the date of this Indenture as originally executed.

2

 

     “common stock” means any stock of any class of capital stock 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 issuer.

     “Company” means the party named as the “Company” in the first paragraph of this Indenture
until a successor replaces it pursuant to the applicable provisions of this Indenture and,
thereafter, shall mean such successor. The foregoing sentence shall likewise apply to any
subsequent such successor or successors.

     “Company Order” means a written order signed in the name of the Company by any two Officers of
the Company.

     “Conversion Agent” means any person authorized by the Company to convert Notes in accordance
with Article 10 hereof.

     “Conversion Make-Whole Payment” means, in respect of Notes for which a Holder exercises its
conversion rights pursuant to Section 10.01 following the Company’s issuance of a Redemption Notice
in accordance with Section 3.02, an amount equal to the remaining scheduled interest payments on
the Notes or portions thereof to be converted at the interest rate specified herein attributable to
such Notes from the last day through which interest has been paid on such Notes through and
including June 25, 2013, in each case discounted to present value using the published yield on
three-year notes of the U.S. Federal Government on the date of the Redemption Notice.

     “Conversion Stock” means any Common Stock or Preferred Stock issued or issuable upon
conversion of any Note and any Common Stock issued or issuable upon conversion of any Preferred
Stock.

     “Corporate Trust Office” means the principal office of the Trustee at which at any time its
corporate trust business shall be administered, which office at the date hereof is located at 1445
Ross Avenue, 2nd Floor, MAC T5303-022, Dallas, Texas 75202, or such other address as the
Trustee may designate from time to time by notice to the Holders and the Company, or the principal
corporate trust office of any successor Trustee (or such other address as a successor Trustee may
designate from time to time by notice to the Holders and the Company).

     “Credit Agreement” means the Credit Agreement, dated March 29, 2006, by and among the Company,
certain of its Subsidiaries, JPMorgan Chase Bank, N.A., as administrative agent, and the lenders
party thereto, including any related guarantees, collateral documents, instruments and agreements
executed in connection therewith, as amended, restated, modified, renewed, refunded, replaced or
refinanced from time to time.

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

     “Depositary” means, with respect to the Notes issuable or issued in whole or in part in global
form, the Person specified in 2.07(d) as the Depositary with respect to such Notes, until a
successor shall have been appointed and become such pursuant to the applicable provisions of this
Indenture, and thereafter, “Depositary” shall mean or include such successor.

3

 

     “Domestic Subsidiary” means any Subsidiary incorporated, organized or otherwise formed under
the laws of the United States, any state thereof or the District of Columbia.

     “Equity Conditions” means the following conditions: (i) at all times during the period
beginning on and including the date of this Indenture and ending on and including the applicable
Stock Issuance Date, the Company shall have delivered shares of Common Stock that are then
deliverable upon all conversions of the Notes; (ii) on each day during the period beginning thirty
(30) days prior to the applicable Stock Issuance Notice Date and ending on and including the
applicable Stock Issuance Date, the Common Stock shall have been listed on a national securities
exchange and the Common Stock shall not have been suspended from trading on such exchange (other
than suspensions of not more than one (1) day and occurring prior to the applicable Stock Issuance
Notice Date due to business announcements by the Company) nor shall the Company have received
notice from such exchange that delisting procedures have been initiated with respect to the Common
Stock following the conclusion of any applicable grace period; (iii) in the case of a Redemption
Notice or an Automatic Conversion Notice, during the period beginning thirty (30) days prior to the
applicable Stock Issuance Notice Date and ending on and including the applicable Stock Issuance
Date, there shall not have occurred the consummation of a Change of Control; (iv) during the period
beginning on and including the date of this Indenture and ending on and including the applicable
Stock Issuance Date, there shall not have occurred (A) the public announcement of a pending,
proposed or intended Change of Control, or action or event that would require adjustment of the
Conversion Price pursuant to Article 10 (any of the foregoing, a “Change Event”) (and no such
Change Event shall have otherwise been pending or intended even if not publicly announced), that
has not been abandoned, terminated or consummated and publicly announced as such (if such Change
Event was previously publicly announced) at least ten (10) Trading Days prior to the applicable
Stock Issuance Notice Date or (B) an Event of Default or Default that has not been cured or waived
at least ten (10) Trading Days prior to the applicable Stock Issuance Notice Date; and (v) on each
day during the period beginning ten (10) Trading Days prior to the applicable Stock Issuance Notice
Date and ending on and including the applicable Stock Issuance Date, (X) there shall not have
existed a Default or an Event of Default, and (Y) no Holder shall be in possession of any
information provided in violation of any of the Exchange Agreements by, or on behalf of, the
Company or any of its Subsidiaries, or any officer, director or other Affiliate thereof, that
constitutes material non-public information with respect to the Company.

     “Exchange Agreements” means the Exchange Agreements dated as of June 22, 2010, between the
Company and the Participating Investors.

     “Foreign Subsidiary” means, with respect to any Person, a Subsidiary of such Person, which
Subsidiary is not a Domestic Subsidiary.

     “Full Conversion Date” means the earlier to occur of (i) the Shareholder Approval Date and
(ii) September 5, 2015.

     “GAAP” means United States generally accepted accounting principles as in effect from time to
time.

4

 

     “Guaranty” means that certain Guaranty Agreement dated as of June 25, 2010 by and among the
Subsidiaries of the Company party thereto and the Trustee, in the form attached hereto as Exhibit
B, as same may be amended, restated, supplemented or otherwise modified from time to time.

     “Holder” or “Noteholder” as applied to any Note means any Person in whose name at the time a
particular Note is registered on the Note Registrar’s books.

     “Indebtedness” of a Person means, without duplication, (a) all obligations of such Person for
borrowed money or with respect to deposits or advances of any kind, (b) all obligations of such
Person evidenced by bonds, debentures, notes or similar instruments, (c) all obligations of such
Person upon which interest charges are customarily paid, (d) all obligations of such Person under
conditional sale or other title retention agreements relating to property acquired by such Person,
(e) all obligations of such Person in respect of the deferred purchase price of property or
services (excluding current accounts payable incurred in the ordinary course of business), (f) all
Indebtedness of others secured by (or for which the holder of such Indebtedness has an existing
right, contingent or otherwise, to be secured by) any Lien on property owned or acquired by such
Person, whether or not the Indebtedness secured thereby has been assumed, (g) all guarantees by
such Person of Indebtedness of others, (h) all capital lease obligations of such Person, (i) all
obligations, contingent or otherwise, of such Person as an account party in respect of letters of
credit and letters of guaranty and (j) all obligations, contingent or otherwise, of such Person in
respect of bankers’ acceptances. The Indebtedness of any Person shall include the Indebtedness of
any other entity (including any partnership in which such Person is a general partner) to the
extent such Person is liable therefor as a result of such Person’s ownership interest in or other
relationship with such entity, except to the extent the terms of such Indebtedness provide that
such Person is not liable therefor.

     “Indenture” means this Indenture, as amended or supplemented from time to time in accordance
with the terms hereof, including the provisions of the TIA that are deemed to be a part hereof.

     “Interest Payment Date” means the Stated Maturity of an installment of interest on the Notes.

     “Intervening Event” means, with respect to the Company, a material event, occurrence, fact,
condition, effect, change or development that was not known or reasonably foreseeable to the Board
of Directors on the date of this Indenture, which event, occurrence, fact, condition, effect,
change or development becomes known to the Board of Directors prior to the Shareholder Approval;
provided that in no event shall any action taken by any party pursuant to and in compliance with
the terms of this Indenture, any of the Notes, any of the Exchange Agreements or any of the other
agreements or instruments contemplated hereby or thereby, or the consequences of any such action,
constitute an Intervening Event.

     “Issue Date” of any Note means the date on which the Note was originally issued or deemed
issued as set forth on the face of the Note.

5

 

     “Lien” means, with respect to any asset, (a) any mortgage, deed of trust, lien, pledge,
hypothecation, encumbrance, charge or security interest in, on or of such asset, whether or not
filed, recorded or otherwise perfected under applicable law, including any option or other
agreement to sell or give a security interest in any such asset, (b) the interest of a vendor or a
lessor under any conditional sale agreement, capital lease or title retention agreement (or any
financing lease having substantially the same economic effect as any of the foregoing) relating to
such asset, and (c) in the case of securities, any purchase option, call or similar right of a
third party with respect to such securities.

     “956 Impact” shall be deemed to occur to the extent the issuance of a guaranty of the
Company’s payment obligations hereunder and/or in respect of the Notes by a Foreign Subsidiary
would result in incremental income tax liability to the Company as a result of the application of
Section 956 of the Internal Revenue Code.

     “Notes” has the meaning ascribed to it in the first paragraph under the caption “Recitals of
the Company.”

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

     “Officers’ Certificate” means a written certificate containing the information specified in
Sections 11.04 and 11.05, signed in the name of the Company by any two Officers of the Company, and
delivered to the Trustee. An Officers’ Certificate given pursuant to Section 4.03 shall be signed
by an authorized financial or accounting Officer of the Company but need not contain the
information specified in Sections 11.04 and 11.05.

     “Opinion of Counsel” means a written opinion containing the information specified in Sections
11.04 and 11.05, from legal counsel. The counsel may be an employee of, or counsel to, the
Company.

     “Participating Investors” means the investors designated as such on the “Schedule of
Investors” attached as Exhibit A to each of the Exchange Agreements.

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

     “Preferred Stock” means the Series C convertible preferred stock, par value $.001 per share,
of the Company, authorized at the date of this Indenture as originally executed and having the
terms set forth in the certificate of designations with respect thereto, in the form attached
hereto as Exhibit D and filed by the Company with, and accepted by, the Secretary of State of the
State of Nevada on or prior to the date hereof (the “Preferred C of D”).

     “principal” of a Note means the principal amount due on the Stated Maturity as set forth on
the face of the Note or the amount of any Change of Control Purchase Price and Make-Whole Premium,
if any, payable pursuant to Section 3.05(a), whichever is applicable.

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     “Regular Record Date” means, with respect to the interest payable on any Interest Payment
Date, the close of business on March 15 or September 15 (whether or not a Business Day), as the
case may be, next preceding such Interest Payment Date.

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

     “SEC” means the Securities and Exchange Commission.

     “Securities Act” means the United States Securities Act of 1933 (or any successor statute), as
amended.

     “Shareholder Approval Date” means the date on which the Shareholder Approval is obtained.

     “Significant Subsidiary” means any direct or indirect Subsidiary of the Company that meets any
of the following conditions:

     (1) the Company’s and its other Subsidiaries’ investments in and advances to such Subsidiary
exceed 10% of the total assets of the Company and its Subsidiaries consolidated as of the end of
the most recently completed fiscal year;

     (2) the Company’s and its other Subsidiaries’ proportionate share of the total assets (after
intercompany eliminations) of such Subsidiary exceed 10% of the total assets of the Company and its
Subsidiaries consolidated as of the end of the most recently completed fiscal year; or

     (3) the Company’s and its other Subsidiaries’ equity in the income from continuing operations
before income taxes, extraordinary items and cumulative effect of a change in accounting principle
of such Subsidiary exceed 10% of such income of the Company and its Subsidiaries consolidated for
the most recently completed fiscal year.

     “Stated Maturity,” when used with respect to any Note or any installment of interest thereon,
means the date specified in such Note as the fixed date on which the principal of such Note or such
installment of interest is due and payable.

     “Stock Issuance Date” means a “Redemption Date,” a “Change of Control Purchase Date” or the
“Automatic Conversion Date,” as applicable.

     “Stock Issuance Notice Date” means the date of the Trustee’s delivery to each of the Holders
of a Redemption Notice pursuant to Section 3.02(a) or a Change of Control Purchase Notice pursuant
to Section 3.05(e), as applicable, or, in the case of an Automatic Conversion, means the Automatic
Conversion Date.

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     “Subsidiary” means (i) a corporation, a majority of whose Capital Stock with voting power,
under ordinary circumstances, to elect directors is, at the date of determination, directly or
indirectly owned by the Company, by one or more Subsidiaries of the Company or by the Company and
one or more Subsidiaries of the Company, (ii) a partnership in which the Company or a Subsidiary of
the Company holds a majority interest in the equity capital or profits of such partnership, or
(iii) any other person (other than a corporation) in which the Company, a Subsidiary of the Company
or the Company and one or more Subsidiaries of the Company, directly or indirectly, at the date of
determination, has (x) at least a majority ownership interest or (y) the power to elect or direct
the election of a majority of the directors or other governing body of such person.

     “TIA” means the Trust Indenture Act of 1939 as in effect on the date of this Indenture;
provided, however, that in the event the TIA is amended after such date, TIA means, to the extent
required by any such amendment, the TIA as so amended.

     “Trading Day” means a day during which trading in Common Stock generally occurs on the NYSE
Amex (or successor thereto) or, if the Common Stock is not listed on the NYSE Amex (or successor
thereto), on the principal other national or regional securities exchange on which the Common Stock
is then listed or, if the Common Stock is not listed on a national or regional securities exchange,
on the principal other market on which the Common Stock is then traded or, if the Common Stock is
not so listed or admitted for trading, a Business Day.

     “Trustee” means the party named as the “Trustee” in the first paragraph of this Indenture
until a successor replaces it pursuant to the applicable provisions of this Indenture and,
thereafter, shall mean such successor. The foregoing sentence shall likewise apply to any
subsequent such successor or successors.

     “United States” means the United States of America (including the States and the District of
Columbia), its territories, its possessions and other areas subject to its jurisdiction (its
“possessions” including Puerto Rico, the U.S. Virgin Islands, Guam, American Samoa, Wake Island and
the Northern Mariana Islands).

     “U.S. Government Obligations” means securities that are (i) direct obligations of the United
States of America for the payment of which its full faith and credit is pledged or (ii) obligations
of a Person controlled or supervised by or acting as an agency or instrumentality of the United
States of America the payment of which is unconditionally guaranteed as a full faith and credit
obligation by the United States of America, which, in either case, are not callable or redeemable
at the option of the issuer thereof at any time prior to the Stated Maturity of the Notes, and
shall also include a depository receipt issued by a bank or trust company as custodian with respect
to any such U.S. Government Obligation or a specific payment of interest on or principal of any
such U.S. Government Obligation held by such custodian for the account of the holder of a
depository receipt; provided that (except as required by law) such custodian is not authorized to
make any deduction from the amount payable to the holder of such depository receipt from any amount
received by the custodian in respect of the U.S. Government Obligation or the specific payment of
interest on or principal of the U.S. Government Obligation evidenced by such depository receipt.

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     “Voting Stock” means with respect to any Person, Capital Stock of any class or kind ordinarily
having the power to vote for the election of directors of such Person.

     Section 1.02. Other Definitions.

	 	 	 	 	 
	 	 	Defined in
	Term	 	Section
	“2011 Notes”

	 	 	2.01	 
	“Act”

	 	 	1.05	(a)
	“Agent Members”

	 	 	2.07	(d)
	“Authenticating Agent”

	 	 	11.14	 
	“Automatic Conversion”

	 	 	10.05	(a)
	“Automatic Conversion Date”

	 	 	10.05	(a)
	“Automatic Conversion Notice”

	 	 	10.05	(b)
	“Bankruptcy Law”

	 	 	6.01	 
	“beneficial ownership”

	 	 	3.05	(a)
	“Buy-In”

	 	 	10.16	 
	“Buy-In Price”

	 	 	10.16	 
	“Cap Allocation Amount”

	 	 	10.04	(b)
	“Certificated Notes”

	 	 	2.07	(b)
	“Change of Control”

	 	 	3.05	(a)
	“Change of Control Purchase Date”

	 	 	3.05	(a)
	“Change of Control Purchase Notice”

	 	 	3.05	(e)
	“Change of Control Purchase Price”

	 	 	3.05	(a)
	“Conversion Date”

	 	 	10.02	(c)
	“Conversion Notice”

	 	 	10.02	 
	“Conversion Ownership Notice”

	 	 	10.04	(a)(i)
	“Conversion Price”

	 	 	10.01	 
	“Conversion Rate”

	 	 	10.01	 
	“Counsel”

	 	 	4.15	(b)
	“Current Market Price”

	 	 	10.07	(g)
	“Custodian”

	 	 	6.01	 
	“DTC”

	 	 	10.02	 
	“Effective Date”

	 	 	3.05	(a)
	“Event of Default”

	 	 	6.01	 
	“Excess Shares”

	 	 	10.01	 
	“Exchange Act”

	 	 	3.05	(a)
	“Exchange Cap”

	 	 	10.04	(b)
	“excluded securities”

	 	 	10.07	(d)
	“Expiration Time”

	 	 	10.07	(f)
	“fair market value”

	 	 	10.07	(g)
	“First Shareholders Meeting”

	 	 	4.15	(a)
	“Global Notes”

	 	 	2.07	(b)
	“Legal Holiday”

	 	 	11.08	 
	“Listed Securities”

	 	 	4.14	 
	“Make-Whole Premium”

	 	 	3.05	(a)
	“Maximum Ownership Limitation”

	 	 	10.04	(a)

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	 	 	Defined in
	Term	 	Section
	“Non-Electing Share”

	 	 	10.14	 
	“Non-Reporting Change of Control”

	 	 	4.02	(a)
	“Note Register”

	 	 	2.04	 
	“Note Registrar”

	 	 	2.04	 
	“Notice of Default”

	 	 	6.01	 
	“Paying Agent”

	 	 	2.04	 
	“Permitted Liens”

	 	 	4.12	 
	“Permitted Subordinated Indebtedness”

	 	 	4.11	 
	“Principal Amount”

	 	 	2.07	(b)
	“Proposal”

	 	 	4.15	(a)
	“Proxy Statement”

	 	 	4.15	(b)
	“Public Acquirer Change of Control”

	 	 	3.05	(c)
	“Public Acquirer Common Stock”

	 	 	3.05	(c)
	“Purchased Shares”

	 	 	10.07	(f)
	“Record Date”

	 	 	10.07	(g)
	“Redemption Date”

	 	 	3.02	 
	“Redemption Notice”

	 	 	3.02	 
	“Redemption Price”

	 	 	3.01	 
	“Reference Period”

	 	 	10.07	(d)
	“Rule 144A Information”

	 	 	4.06	 
	“Second Shareholders Meeting”

	 	 	4.15	(a)
	“Share Delivery Date”

	 	 	10.16	 
	“Share Product Amount”

	 	 	10.16	 
	“Shareholder Approval”

	 	 	4.15	(a)
	“Shareholders Meeting”

	 	 	4.15	(a)
	“Stock Price”

	 	 	3.05	(a)
	“Surviving Entity”

	 	 	5.01	 
	“transfer”

	 	 	2.07	(d)
	“Trigger Event”

	 	 	10.07	(d)

     Section 1.03. Incorporation by Reference of Trust Indenture Act. Whenever this Indenture
refers to a provision of the TIA, the provision is incorporated by reference in and made a part of
this Indenture. The following TIA terms used in this Indenture have the following meanings:

     “Commission” means the SEC;

     “indenture Notes” means the Notes;

     “indenture Note holder” means a Noteholder;

     “indenture to be qualified” means this Indenture;

     “indenture trustee” or “institutional trustee” means the Trustee; and

     “obligor” on the indenture Notes means the Company.

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     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 1.04. Rules of Construction. Unless the context otherwise requires:

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

          (b) “or” is not exclusive;

          (c) “including” means including, without limitation; and

          (d) words in the singular include the plural, and words in the plural include the singular.

     Section 1.05. Acts of Holders. (a) Any request, demand, authorization, direction, notice,
consent, waiver or other action provided by this Indenture to be given or taken by Holders may be
embodied in and evidenced by one or more instruments of substantially similar tenor signed by such
Holders in person or by their agent duly appointed in writing; and, except as herein otherwise
expressly provided, such action shall become effective when such instrument or instruments are
delivered to the Trustee and, where it is hereby expressly required, to the Company. Such
instrument or instruments (and the action embodied therein and evidenced thereby) are herein
sometimes referred to as the “Act” of Holders signing such instrument or instruments. Proof of
execution of any such instrument or of a writing appointing any such agent shall be sufficient for
any purpose of this Indenture and conclusive in favor of the Trustee and the Company, if made in
the manner provided in this Section.

          (b) The fact and date of the execution by any Person of any such instrument or writing may be
proved by the affidavit of a witness of such execution or by a certificate of a notary public or
other officer authorized by law to take acknowledgments of deeds, certifying that the individual
signing such instrument or writing acknowledged to such officer the execution thereof. Where such
execution is by a signer acting in a capacity other than such signer’s individual capacity, such
certificate or affidavit shall also constitute sufficient proof of such signer’s authority. The
fact and date of the execution of any such instrument or writing, or the authority of the Person
executing the same, may also be proved in any other manner which the Trustee deems sufficient.

     The ownership of Notes shall be proved by the Note Register or by a certificate of the Note
Registrar.

     Any request, demand, authorization, direction, notice, consent, waiver or other Act of the
Holder of any Note shall bind every future Holder of the same Note and the holder of every Note
issued upon the registration of transfer thereof or in exchange therefor or in lieu thereof in
respect of anything done, omitted or suffered to be done by the Trustee or the Company in reliance
thereon, whether or not notation of such action is made upon such Note.

     If the Company shall solicit from the Holders any request, demand, authorization, direction,
notice, consent, waiver or other Act, the Company may, at its option, by or pursuant to

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a resolution of the Board of Directors, fix in advance a record date for the determination of
Holders entitled to give such request, demand, authorization, direction, notice, consent, waiver or
other Act, but the Company shall have no obligation to do so. If such a record date is fixed, such
request, demand, authorization, direction, notice, consent, waiver or other Act may be given before
or after such record date, but only the Holders of record at the close of business on such record
date shall be deemed to be Holders for purposes of determining whether Holders of the requisite
proportion of outstanding Notes have authorized or agreed or consented to such request, demand,
authorization, direction, notice, consent, waiver or other Act, and for that purpose the
outstanding Notes shall be computed as of such record date; provided that no such authorization,
agreement or consent by the Holders on such record date shall be deemed effective unless it shall
become effective pursuant to the provisions of this Indenture not later than six months after the
record date.

ARTICLE 2

The Notes

     Section 2.01. Designation Amount and Issue of Notes. The Notes shall be designated as “5.50%
Convertible Senior Notes due 2015.” The aggregate principal amount of Notes which may be
authenticated and delivered under this Indenture is limited to $65,000,000. Except pursuant to
Sections 2.07, 2.08, 3.08 and 10.02 hereof, Notes may be authenticated and delivered under this
Indenture only in exchange for the Company’s outstanding 5.50% Convertible Senior Notes due October
5, 2011 (“2011 Notes”) on the Closing Date pursuant to the Exchange Agreements or, provided that at
least $61,500,000 in aggregate principal amount of the Notes are issued on the Closing Date, in
subsequent exchanges after the Closing Date on substantially identical terms as those contained in
the Exchange Agreements. Subject to the limitation in the prior sentence, Notes may be executed by
the Company and delivered to the Trustee for authentication, and the Trustee shall thereupon
authenticate and deliver said Notes upon a Company Order, without any further action by the Company
hereunder.

     Section 2.02. Form of Notes. The Notes and the Trustee’s certificate of authentication to be
borne by such Notes shall be substantially in the form set forth in Exhibit A, which is
incorporated in and made a part of this Indenture.

     Any of the Notes may have such letters, numbers or other marks of identification and such
notations, legends and endorsements as the Officers executing the same may approve (execution
thereof to be conclusive evidence of such approval) and as are not inconsistent with the provisions
of this Indenture, or as may be required to comply with any law or with any rule or regulation made
pursuant thereto or with any rule or regulation of any securities exchange or automated quotation
system on which the Notes may be listed, or to conform to usage.

     Any Global Note shall represent such of the outstanding Notes as shall be specified therein
and shall provide that it shall represent the aggregate amount of outstanding Notes from time to
time endorsed thereon and that the aggregate amount of outstanding Notes represented thereby may
from time to time be increased or reduced to reflect transfers or exchanges permitted hereby. Any
endorsement of a Global Note to reflect the amount of any increase or decrease in the amount of
outstanding Notes represented thereby shall be made by the Trustee, in such manner and upon
instructions given by the Holder of such Notes in accordance with this

12

 

Indenture. Payment of principal of and interest and premium, if any, on any Global Note shall
be made to the Holder of such Note.

     The terms and provisions contained in the form of Note 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.

     Section 2.03. Execution and Authentication. The Notes shall be executed on behalf of the
Company by an Officer of the Company. The signature of such Officer on the Notes may be manual or
facsimile.

     Notes bearing the manual or facsimile signatures of individuals who were at the time of the
execution of the Notes the proper Officers of the Company shall bind the Company, notwithstanding
that such individuals or any of them have ceased to hold such offices prior to the authentication
and delivery of such Notes or did not hold such offices at the date of authentication of such
Notes. Notes shall be dated the date of their authentication.

     No Note shall be entitled to any benefit under this Indenture or be valid or obligatory for
any purpose unless there appears on such Note a certificate of authentication substantially in the
form provided for herein duly executed by the Trustee or an Authenticating Agent by manual
signature of an authorized officer, and such certificate of authentication upon any Note shall be
conclusive evidence, and the only evidence, that such Note has been duly authenticated and
delivered hereunder.

     The Notes shall be issued only in registered form without coupons and only in denominations of
$1,000 in principal amount and any integral multiple thereof.

     Section 2.04. Note Registrar, Paying Agent and Conversion Agent. The Company shall maintain
an office or agency where Notes may be presented for registration of transfer or for exchange
(“Note Registrar”), an office or agency where Notes may be presented for purchase or payment
(“Paying Agent”) and an office or agency where Notes may be presented for conversion (“Conversion
Agent”). The Note Registrar shall keep a register (the “Note Register”) in which, subject to such
reasonable regulations as it may prescribe it shall provide for the registration and transfer of
the Notes. The Company may have one or more co-registrars, one or more additional paying agents
and one or more additional conversion agents. The term Paying Agent includes any additional paying
agent, including any named pursuant to Section 4.05. The term Conversion Agent includes any
additional conversion agent, including any named pursuant to Section 4.05.

     The Company shall notify the Trustee of the name and address of any such agent. If the
Company fails to maintain a Note Registrar, Paying Agent or Conversion Agent, the Trustee shall act
as such and shall be entitled to appropriate compensation therefor pursuant to Section 7.06. The
Company or any Subsidiary or an Affiliate of either of them may act as Paying Agent, Note
Registrar, Conversion Agent or co-registrar.

     The Company initially appoints the Trustee as Note Registrar, Conversion Agent and Paying
Agent in connection with the Notes.

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     Section 2.05. Paying Agent to Hold Money and Notes in Trust. Except as otherwise provided
herein, on or prior to each due date of payments in respect of any Note, the Company shall deposit
with the Paying Agent a sum of money (in immediately available funds if deposited on the due date)
or, to the extent applicable, Preferred Stock sufficient to make such payments 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 Noteholders or the Trustee all money and
Preferred Stock held by the Paying Agent for the making of payments in respect of the Notes and
shall notify the Trustee of any default by the Company in making any such payment. At any time
during the continuance of any such default, the Paying Agent shall, upon the written request of the
Trustee, forthwith pay to the Trustee all money and Preferred Stock so held in trust. If the
Company, a Subsidiary or an Affiliate of the Company acts as Paying Agent, it shall segregate the
money and Preferred Stock 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 and Preferred Stock held by it to
the Trustee and to account for any funds and Preferred Stock disbursed by it. Upon doing so, the
Paying Agent shall have no further liability for the money or Preferred Stock.

     Section 2.06. Noteholder 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
Noteholders. If the Trustee is not the Note Registrar, the Company shall cause to be furnished to
the Trustee at least semiannually on April 1 and October 1 a listing of Noteholders dated within 15
days of the date on which the list is furnished and at such other times as the Trustee may request
in writing a list, in such form and as of such date as the Trustee may reasonably require, of the
names and addresses of Noteholders.

     Section 2.07. Transfer and Exchange; Restrictions on Transfer; Depositary. (a) Upon surrender
for registration of transfer of any Note, together with a written instrument of transfer
satisfactory to the Note Registrar duly executed by the Noteholder or such Noteholder’s attorney
duly authorized in writing, at the office or agency of the company designated as Note Registrar or
co-registrar pursuant to Section 2.04, and satisfaction of the requirements of such transfer set
forth in this Section, the Company shall execute, and the Trustee shall authenticate and deliver,
in the name of the designated transferee or transferees, one or more new Notes of any authorized
denomination or denominations, of a like aggregate principal amount. The Company shall not charge
a service charge for any registration of transfer or exchange, but the Company may require payment
of a sum sufficient to pay all taxes, assessments or other governmental charges that may be imposed
in connection with the transfer or exchange of the Notes from the Noteholder requesting such
transfer or exchange.

     At the option of the Holder, Notes may be exchanged for other Notes of any authorized
denomination or denominations, of a like aggregate principal amount, upon surrender of the Notes to
be exchanged, together with a written instrument of transfer satisfactory to the Note Registrar
duly executed by the Noteholder or such Noteholder’s attorney duly authorized in writing, at such
office or agency. Whenever any Notes are so surrendered for exchange, the Company shall execute,
and the Trustee shall authenticate and deliver, the Notes which the Holder making the exchange is
entitled to receive.

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

     The Company shall not be required to make, and the Note Registrar need not register, transfers
or exchanges of any Notes in respect of which a Redemption Notice has been given by the Company, or
for which a Change of Control Purchase Notice has been given and not withdrawn by the Holder
thereof, in accordance with the terms of this Indenture (except, in the case of Notes to be
purchased in part, the portion thereof not to be purchased).

          (b) Except as provided below, the Notes shall be issued in the form of one or more global
notes registered in the name of the Depositary or the nominee of the Depositary (the “Global
Notes”). The transfer and exchange of beneficial interests in any Global Notes shall be effected
through the Depositary in accordance with this Indenture and the procedures of the Depositary
therefor. The Trustee shall make appropriate endorsements to reflect increases or decreases in the
principal amounts of any such Global Notes as set forth on the face of the Global Notes (“Principal
Amount”) to reflect any such transfers. Except as provided below, beneficial owners of a Global
Note 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 (“Certificated Notes”) and
will not be considered Holders of such Global Note.

          (c) So long as the Notes are eligible for book-entry settlement with the Depositary, a
Certificated Note may be exchanged for a beneficial interest in a Global Note upon receipt by the
Trustee of a Certificated Note, duly endorsed or accompanied by appropriate instruments of
transfer, in form satisfactory to the Trustee, together with written instructions directing the
Trustee to make an adjustment on its books and records with respect to such Global Note to reflect
an increase in the aggregate Principal Amount of the Notes represented by the Global Note, such
instructions to contain information regarding the Depositary account to be credited with such
increase. Upon any such exchange, the Trustee shall cancel such Certificated Note and cause the
aggregate Principal Amount of Notes represented by the Global Note to be increased by the aggregate
principal amount of the Certificated Note to be exchanged and shall credit or cause to be credited
to the account of the Person specified in such instructions a beneficial interest in the Global
Note equal to the principal amount of the Certificated Note so canceled.

               (i) Upon any transfer of a beneficial interest in the Global Note to the Company or such
Subsidiary, as the case may be, the Trustee shall make an endorsement on the Global Note to reflect
a decrease in the aggregate Principal Amount of the Notes represented by such Global Note, and the
Company shall execute a Certificated Note or Notes in exchange therefor, and the Trustee, upon
receipt of such Certificated Note or Notes and a Company Order, shall authenticate and deliver such
Certificated Note or Notes.

               (ii) Upon any transfer of a beneficial interest in the Global Note, the Trustee shall make an
endorsement on the Global Note to reflect a decrease in the aggregate Principal Amount of the Notes
represented by such Global Note, and, at the request of the transferee, either (1) the Company
shall execute a Certificated Note or Notes in exchange therefor, and the Trustee, upon receipt of
such Certificated Note or Notes and a Company Order,

15

 

shall authenticate and deliver such Certificated Note or Notes or (2) the Trustee shall make
an endorsement on such Global Note to reflect a corresponding increase in the aggregate Principal
Amount of Notes represented by such Global Note.

     Any Global Note may be endorsed with or have incorporated in the text thereof such legends or
recitals or changes not inconsistent with the provisions of this Indenture as may be required to
comply with any applicable law or any regulation thereunder or with the rules and regulations of
any securities exchange or automated quotation system upon which the Notes may be listed or traded
or to conform with any usage with respect thereto, or to indicate any special limitations or
restrictions to which any particular Notes are subject.

          (d) No Note may be transferred except pursuant to registration or an exemption from
registration under the Securities Act and any applicable state securities laws, and each
Noteholder, by such Noteholder’s acceptance of a Note, agrees to be bound by all such restrictions
on transfer. Other than as may be required pursuant to applicable federal and state securities
laws, no Note shall be subject to any restriction on transfer pursuant to such Note or the
Indenture or otherwise imposed by the Company. As used in Sections 2.07(c), 2.07(d) and 2.07(e),
the term “transfer” encompasses any sale, transfer or other disposition whatsoever of any Note. No
Note shall bear any legend regarding registration under (or the need for an exemption from the
registration requirements of) the Securities Act or state securities laws. Notwithstanding the
foregoing, Notes may at any time be pledged in connection with a bona fide margin account or other
loan or financing arrangement secured by the Notes.

     Notwithstanding any other provisions of this Indenture (other than the provisions set forth in
Section 2.07(c), with respect to transfers of beneficial interests in a Global Note, and in this
Section 2.07(d)), a Global Note may not be transferred as a whole or in part except by the
Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or
another nominee of the Depositary or by the Depositary or any such nominee to a successor
Depositary or a nominee of such successor Depositary.

     Neither any members of, or participants in, the Depositary (collectively, the “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 Note registered in the name of the Depositary or any nominee
thereof, or under any such Global Note, 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 Note 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 Note.

     The Depositary shall be a clearing agency registered under the Exchange Act. The Company
initially appoints The Depository Trust Company to act as Depositary with respect to the Notes in
global form. Initially, the Global Notes shall be issued to the Depositary, registered

16

 

in the name of Cede & Co., as the nominee of the Depositary, and deposited with the Trustee,
as custodian for Cede & Co.

     If at any time the Depositary for a Global Note notifies the Company that it is unwilling or
unable to continue as Depositary for such Note, the Company may appoint a successor Depositary with
respect to such Note. If a successor Depositary is not appointed by the Company within ninety (90)
days after the Company receives such notice, the Company will execute, and the Trustee, upon
receipt of an Officers’ Certificate for the authentication and delivery of Notes, will authenticate
and deliver, Certificated Notes, in aggregate principal amount equal to the principal amount of
such Global Note, in exchange for such Global Note.

     If a Certificated Note is issued in exchange for any portion of a Global Note after the close
of business at the office or agency where such exchange occurs on any Regular Record Date and
before the opening of business at such office or agency on the next succeeding Interest Payment
Date, interest will not be payable on such Interest Payment Date in respect of such Certificated
Note, but will be payable on such Interest Payment Date only to the Person to whom interest in
respect of such portion of such Global Note is payable in accordance with the provisions of this
Indenture.

     Certificated Notes issued in exchange for all or a part of a Global Note pursuant to this
Section 2.07 shall be registered in such names and in such authorized denominations as the
Depositary, pursuant to instructions from its direct or indirect participants or otherwise, shall
instruct the Trustee. Upon execution and authentication, the Trustee shall deliver such
Certificated Notes to the Persons in whose names such Certificated Notes are so registered.

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

          (e) No Conversion Stock acquired by a Noteholder upon conversion of a Note may be transferred
by such Noteholder except pursuant to registration or an exemption from registration under the
Securities Act and any applicable state securities laws, and each Noteholder, by such Noteholder’s
acceptance of a Note, agrees to be bound by all such restrictions on transfer. Other than as may
be required pursuant to applicable federal and state securities laws, no Conversion Stock shall be
subject to any restriction on transfer imposed by the Company or on behalf of the Company, the
Trustee or the transfer agent for such Conversion Stock. No certificate evidencing any Conversion
Stock shall bear any legend requiring registration under (or the need for an exemption from the
registration requirements of) the Securities Act or state securities law. Notwithstanding the
foregoing, shares of Conversion

17

 

Stock may at any time be pledged in connection with a bona fide margin account or other loan
or financing arrangement secured by the shares of Conversion Stock.

     Section 2.08. Replacement Notes. If any mutilated Note is surrendered to the Trustee, or the
Company, the Trustee and, if applicable, the Authenticating Agent receive evidence to their
satisfaction of the destruction, loss or theft of any Note, and there is delivered to the Company,
the Trustee and, if applicable, the Authenticating Agent such Note or indemnity as may be required
by them to save each of them harmless, then, in the absence of notice to the Company, the Trustee
or, if applicable, the Authenticating Agent that such Note has been acquired by a bona fide
purchaser, the Company shall execute and upon its written request the Trustee or the Authenticating
Agent shall authenticate and deliver, in exchange for any such mutilated Note or in lieu of any
such destroyed, lost or stolen Note, a new Note of like tenor and principal amount, bearing a
number not contemporaneously outstanding.

     In case any such mutilated, destroyed, lost or stolen Note has become or is about to become
due and payable, or is about to be purchased by the Company pursuant to Article 3 hereof, the
Company in its discretion may, instead of issuing a new Note, pay or purchase such Note, as the
case may be.

     Upon the issuance of any new Notes under this Section 2.08, the Company may require the
payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in
relation thereto and any other expenses (including the fees and expenses of the Trustee and any
Authenticating Agent) connected therewith.

     Every new Note issued pursuant to this Section 2.08 in lieu of any mutilated, destroyed, lost
or stolen Note shall constitute an original additional contractual obligation of the Company,
whether or not the destroyed, lost or stolen Note shall be at any time enforceable by anyone, and
shall be entitled to all benefits of this Indenture equally and proportionately with any and all
other Notes duly issued hereunder.

     The provisions of this Section 2.08 are exclusive and shall preclude (to the extent lawful)
all other rights and remedies with respect to the replacement or payment of mutilated, destroyed,
lost or stolen Notes.

     Section 2.09. Outstanding Notes; Determination of Holders’ Action. Notes outstanding at any
time are all the Notes authenticated by the Trustee except for those cancelled by it or delivered
to it for cancellation, those paid pursuant to Section 2.08 and those described in this Section
2.09 as not outstanding. A Note does not cease to be outstanding because the Company or an
Affiliate thereof holds the Note; provided, however, that in determining whether the Holders of the
requisite principal amount of the outstanding Notes have given or concurred in any request, demand,
authorization, direction, notice, consent or waiver hereunder, Notes owned by the Company or any
other obligor upon the Notes or any Affiliate of the Company or such other obligor shall be
disregarded and deemed not to be outstanding, except that, in determining whether the Trustee shall
be protected in relying upon any such request, demand, authorization, direction, notice, consent or
waiver, only Notes which a Responsible Officer of the Trustee actually knows to be so owned shall
be so disregarded. Subject to the foregoing, only Notes

18

 

outstanding at the time of such determination shall be considered in any such determination
(including, without limitation, determinations pursuant to Articles 6 and 9).

     If a Note is replaced pursuant to Section 2.08, it ceases to be outstanding unless the Trustee
receives proof satisfactory to it that the replaced Note is held by a bona fide purchaser.

     If the Paying Agent holds, in accordance with this Indenture, on the Business Day following
the Change of Control Purchase Date, or on Stated Maturity, money or securities, if permitted
hereunder, sufficient to pay Notes payable on that date, then immediately after such Change of
Control Purchase Date or Stated Maturity, as the case may be, such Notes shall cease to be
outstanding and interest on such Notes shall cease to accrue.

     If a Note is converted in accordance with Article 10, then from and after the time of
conversion on the conversion date, such Note shall cease to be outstanding and interest shall cease
to accrue on such Note.

     Section 2.10. Temporary Notes. Pending the preparation of definitive Notes, the Company may
execute, and upon a Company Order the Trustee shall authenticate and deliver, temporary Notes which
are printed, lithographed, typewritten, mimeographed or otherwise produced, in any authorized
denomination, substantially of the tenor of the definitive Notes in lieu of which they are issued
and with such appropriate insertions, omissions, substitutions and other variations as the officers
executing such Notes may determine, as conclusively evidenced by their execution of such Notes.

     If temporary Notes are issued, the Company will cause definitive Notes to be prepared without
unreasonable delay. After the preparation of definitive Notes, the temporary Notes shall be
exchangeable for definitive Notes upon surrender of the temporary Notes at the office or agency of
the Company designated for such purpose pursuant to Section 2.04, without charge to the Holder.
Upon surrender for cancellation of any one or more temporary Notes the Company shall execute and
the Trustee or an Authenticating Agent shall authenticate and deliver in exchange therefor a like
principal amount of definitive Notes of authorized denominations. Until so exchanged the temporary
Notes shall in all respects be entitled to the same benefits under this Indenture as definitive
Notes.

     Section 2.11. Cancellation. All Notes surrendered for payment, purchase by the Company
pursuant to Article 3, conversion or registration of transfer or exchange shall, if surrendered to
any person other than the Trustee, be delivered to the Trustee and shall be promptly cancelled by
it. The Company may at any time deliver to the Trustee for cancellation any Notes previously
authenticated and delivered hereunder which the Company may have acquired in any manner whatsoever,
and all Notes so delivered shall be promptly cancelled by the Trustee. The Company may not issue
new Notes to replace Notes it has paid or delivered to the Trustee for cancellation or that any
Holder has converted pursuant to Article 10. No Notes shall be authenticated in lieu of or in
exchange for any Notes cancelled as provided in this Section 2.11, except as expressly permitted by
this Indenture. All cancelled Notes held by the Trustee shall be disposed of by the Trustee in its
customary manner.

19

 

     Section 2.12. Persons Deemed Owners. Prior to due presentment of a Note for registration of
transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person
in whose name such Note is registered as the owner of such Note for the purpose of receiving
payment of principal of the Note or the payment of any Change of Control Purchase Price, Make-Whole
Premium or Conversion Make-Whole Payment in respect thereof, and interest thereon, if any, for the
purpose of conversion and for all other purposes whatsoever, whether or not such Note be overdue,
and neither the Company, the Trustee nor any agent of the Company or the Trustee shall be affected
by notice to the contrary.

     Section 2.13. CUSIP Numbers. The Company in issuing the Notes may use “CUSIP” numbers (if
then generally in use). No representation is made as to the correctness of such CUSIP numbers and
reliance may be placed only on the other identification numbers printed on the Notes. The Company
will promptly notify the Trustee of any change in the CUSIP numbers.

     Section 2.14. Default Interest. If the Company defaults in a payment of interest on the
Notes, it shall pay, or shall deposit with the Paying Agent money in immediately available funds
sufficient to pay, the defaulted interest, plus (to the extent lawful) any interest payable on the
defaulted interest, to the Persons who are Holders on a subsequent special record date. A special
record date, as used in this Section 2.14 with respect to the payment of any defaulted interest,
shall mean the 15th day next preceding the date fixed by the Company for the payment of defaulted
interest, whether or not such day is a Business Day. At least 15 days before the subsequent
special record date, the Company shall mail to each Holder and to the Trustee a notice that states
the subsequent special record date, the payment date and the amount of defaulted interest to be
paid.

ARTICLE 3

Redemption and Repurchase Upon A Change Of Control

     Section 3.01. Company’s Right to Redeem. The Company, at its option, may redeem the Notes, in
whole or in part, at any time prior to Stated Maturity in accordance with the provisions of Section
3.02, Section 3.03 and Section 3.04 on the Redemption Date for a redemption price (the “Redemption
Price”) in cash equal to 100% of the principal amount of the Notes plus any accrued and unpaid
interest on the Notes redeemed to but excluding the Redemption Date if the Closing Price of the
Common Stock equals or exceeds 150% of the Conversion Price for at least 20 Trading Days in any
consecutive 30 Trading Day period ending on the Trading Day immediately preceding the Redemption
Date and all of the Equity Conditions are satisfied (or waived in writing by the Holders of a
majority in aggregate principal amount of the Notes then outstanding).

     Section 3.02. Notice of Optional Redemption; Selection of Notes.

          (a) In case the Company shall desire to exercise the right to redeem all or, as the case may
be, any part of the Notes pursuant to Section 3.01, it shall fix a date for redemption (the
“Redemption Date”) and it or, at its written request (which request must include the information
listed in Section 3.02(b) and be received by the Trustee not fewer than forty-five (45) days prior
(or such shorter period of time as may be acceptable to the Trustee) to the Redemption Date), the
Trustee in the name of and at the expense of the Company, shall mail or

20

 

cause to be mailed a notice of such redemption (a “Redemption Notice”) not fewer than thirty
(30) nor more than sixty (60) days prior to the Redemption Date to each Holder of Notes so to be
redeemed as a whole or in part at its last address as the same appears on the Note Register;
provided that if the Company shall give such notice, it shall also give written notice of the
Redemption Date to the Trustee. Such mailing shall be by first class mail. The notice, if mailed
in the manner herein provided, shall be conclusively presumed to have been duly given, whether or
not the Holder receives such notice. In any case, failure to give such notice by mail or any
defect in the notice to the Holder of any Note designated for redemption as a whole or in part
shall not affect the validity of the proceedings for the redemption of any other Note.
Concurrently with the mailing of any such Redemption Notice, the Company shall issue a press
release announcing such redemption, the form and content of which press release shall be determined
by the Company in its sole discretion. The failure to issue any such press release or any defect
therein shall not affect the validity of the Redemption Notice or any of the proceedings for the
redemption of any Note called for redemption.

          (b) Each such Redemption Notice shall specify the aggregate principal amount of Notes to be
redeemed, the CUSIP, ISIN or similar number or numbers of the Notes being redeemed, the Redemption
Date (which shall be a Business Day), the Redemption Price at which Notes are to be redeemed, the
place or places of payment, that payment will be made upon presentation and surrender of such
Notes, that interest accrued and unpaid up to but not including the Redemption Date will be paid as
specified in said notice, and that on and after said date interest thereon or on the portion
thereof to be redeemed will cease to accrue, and shall certify that the Equity Conditions have been
satisfied as of the date of such Redemption Notice. Such notice shall also state the current
Conversion Rate, the date on which the right to convert such Notes or portions thereof into shares
of Common Stock will expire and the form of consideration to be paid in respect of the Conversion
Make-Whole Payment. If fewer than all the Notes are to be redeemed, the Redemption Notice shall
identify the Notes to be redeemed (including CUSIP, ISIN or similar number or numbers, if any). In
case any Note is to be redeemed in part only, the Redemption Notice shall state the portion of the
principal amount thereof to be redeemed and shall state that, on and after the Redemption Date,
upon surrender of such Note, a new Note or Notes in principal amount equal to the unredeemed
portion thereof will be issued.

          (c) On or prior to the Redemption Date specified in the Redemption Notice given as provided in
this Section 3.02, the Company will deposit with the Trustee or with one or more Paying Agents an
amount of money in immediately available funds sufficient to redeem on the Redemption Date all the
Notes (or portions thereof) so called for redemption (other than those theretofore surrendered for
conversion into shares of Common Stock) at the appropriate Redemption Price; provided that if such
payment is made on the Redemption Date it must be received by the Trustee or Paying Agent, as the
case may be, by 10:00 a.m., New York City time, on such date. The Company shall be entitled to
retain any interest, yield or gain on amounts deposited with the Trustee or any Paying Agent
pursuant to this Section 3.02(c) in excess of amounts required hereunder to pay the Redemption
Price. Subject to the last sentence of Section 7.05, if any Note called for redemption is
converted pursuant hereto prior to such Redemption Date, any money deposited with the Trustee or
any Paying Agent or so segregated and held in trust for the redemption of such Note shall be paid
to the Company upon its written request, or, if then held by the Company, shall be discharged from
such trust. Whenever any Notes are to be redeemed, the Company will give the Trustee written
notice in the form of an

21

 

Officers’ Certificate not fewer than forty-five (45) days (or such shorter period of time as
may be acceptable to the Trustee) prior to the Redemption Date as to the aggregate principal amount
of Notes to be redeemed.

          (d) If the Company opts to redeem less than all of the outstanding Notes, the Trustee shall
select or cause to be selected the Notes or portions thereof of the Global Note or the Certificated
Notes to be redeemed (in principal amounts of $1,000 or integral multiples thereof) by lot, on a
pro rata basis or by another method the Trustee deems fair and appropriate. If any Note selected
for partial redemption is submitted for conversion in part after such selection, the portion of
such Note submitted for conversion shall be deemed (so far as may be possible) to be from the
portion selected for redemption. The Notes (or portions thereof) so selected shall be deemed duly
selected for redemption for all purposes hereof, notwithstanding that any such Note is submitted
for conversion in part before the mailing of the Redemption Notice.

     Upon any redemption of less than all of the outstanding Notes, the Company and the Trustee may
(but need not), solely for purposes of determining the pro rata allocation among such Notes as are
unconverted and outstanding at the time of redemption, treat as outstanding any Notes surrendered
for conversion during the period of fifteen (15) days next preceding the mailing of a Redemption
Notice and may (but need not) treat as outstanding any Note authenticated and delivered during such
period in exchange for the unconverted portion of any Note converted in part during such period.

     Section 3.03. Payment of Notes Called for Redemption by the Company. If a Redemption Notice
has been given as provided in Section 3.02(a), the Notes or portion of Notes with respect to which
such Redemption Notice has been given shall, unless converted into shares of Common Stock pursuant
to the terms hereof or any of the Equity Conditions has not been satisfied (or waived in writing by
the Holders of a majority in aggregate principal amount of the Notes then outstanding), become due
and payable on the Redemption Date and at the place or places stated in such Redemption Notice at
the applicable Redemption Price. If the Trustee or other Paying Agent appointed by the Company, or
the Company or an Affiliate of the Company, if it or such Affiliate is acting as the Paying Agent,
holds cash sufficient to pay the aggregate Redemption Price of all the Notes or portions thereof
that are to be purchased as of the Redemption Date, then immediately after the Redemption Date (i)
such Notes will cease to be outstanding, (ii) interest on such Notes will cease to accrue and (iii)
all other rights of the Holders of such Notes will terminate other than the right to receive the
Redemption Price upon delivery of the Notes, whether or not book-entry transfer of the Notes has
been made or the Notes have been delivered to the Trustee or Paying Agent. On presentation and
surrender of such Notes at a place of payment specified in the Redemption Notice, the said Notes or
the specified portions thereof shall be paid and redeemed by the Company at the applicable
Redemption Price; provided that if the applicable Redemption Date is an Interest Payment Date, the
interest payable on such Interest Payment Date shall be paid on such Interest Payment Date to the
holders of record of such Notes on the applicable record date instead of the Holders surrendering
such Notes for redemption on such date.

     Upon presentation of any Note 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

22

 

the Company, a new Note or Notes, of authorized denominations, in principal amount equal to
the unredeemed portion of the Note or Notes so presented.

     Notwithstanding the foregoing, (x) the Trustee shall not redeem any Notes or mail any
Redemption Notices during the continuance of a default in payment of interest on the Notes, and (y)
in the event that any of the Equity Conditions is not satisfied (or waived in writing by the
Holders of a majority in aggregate principal amount of the Notes then outstanding), then the
redemption shall be null and void with respect to each Note. If any Note called for redemption
shall not be so paid upon surrender thereof for redemption, the principal shall, until paid or duly
provided for, continue to bear interest at the rate borne by the Note, and such Note shall remain
convertible into shares of Common Stock, until the principal and interest shall have been paid or
duly provided for. The Company will notify all of the Holders if the Company redeems any of the
Notes.

     Section 3.04. Conversion Arrangement on Call for Redemption. In connection with any
redemption of Notes, the Company may arrange for the purchase and conversion of any Notes by an
agreement with one or more investment banks or other purchasers to purchase such Notes by paying to
the Trustee in trust for the Noteholders, on or before the date fixed for redemption, an amount not
less than the applicable Redemption Price, together with interest accrued and unpaid to, but
excluding, the date fixed for redemption, of such Notes. Notwithstanding anything to the contrary
contained in this Article 3, the obligation of the Company to pay the Redemption Price of such
Notes, together with interest accrued and unpaid to, but excluding, the date fixed for redemption,
shall be deemed to be satisfied and discharged to the extent such amount is so paid by such
purchasers. If such an agreement is entered into, a copy of which will be filed with the Trustee
prior to the date fixed for redemption, any Notes not duly surrendered for conversion by the
Holders thereof may, at the option of the Company, be deemed, to the fullest extent permitted by
law, acquired by such purchasers from such Holders and surrendered by such purchasers for
conversion into shares of Common Stock, all as of immediately prior to the close of business on the
date fixed for redemption (and the right to convert any such Notes shall be extended through such
time), subject to payment of the above amount as aforesaid. At the written direction of the
Company, the Trustee shall hold and dispose of any such amount paid to it in the same manner as it
would monies deposited with it by the Company for the redemption of Notes. Without the Trustee’s
prior written consent, no arrangement between the Company and such purchasers for the purchase and
conversion of any Notes into shares of Common Stock shall increase or otherwise affect any of the
powers, duties, responsibilities or obligations of the Trustee as set forth in this Indenture.

     Section 3.05. Purchase of Notes at Option of the Holder Upon Change of Control. (a) If there
shall have occurred a Change of Control, all or any portion of the Notes of any Holder equal to
$1,000 or a whole multiple of $1,000, shall be repurchased by the Company, at the option of such
Holder, at a repurchase price equal to 100% of the aggregate principal amount of the Notes to be
repurchased, together with accrued and unpaid interest to, but excluding, the purchase date (the
“Change of Control Purchase Price”), on the date (the “Change of Control Purchase Date”) that is 45
days after the date the Company delivered the notice required under Section 3.05(d) (or if such
45th day is not a Business Day, the next succeeding Business Day); provided, however, that if the
Change of Control Purchase Date is after a Regular Record Date but on or prior to the corresponding
Interest Payment Date, the accrued and unpaid interest

23

 

becoming due on such Interest Payment Date shall be payable to the Holders of such Notes, or
one or more predecessor Notes, registered as such on the relevant Regular Record Date according to
their terms.

     If there shall have occurred a Change of Control pursuant to clause (ii) of the definition
thereof set forth in this Section 3.05(a), the Company will pay a Make-Whole Premium to the Holders
of the Notes in addition to the Change of Control Purchase Price. The Make-Whole Premium will also
be paid to the Holders of the Notes who convert their Notes on or after the date on which the
Company has given a notice to all Holders of Notes in accordance with Section 3.05(d) hereof and on
or before the close of business on the Business Day immediately preceding the Change of Control
Purchase Date.

     The “Make-Whole Premium” will be determined by reference to the table below and is based on
the date on which the Change of Control becomes effective (the “Effective Date”) and the price (the
“Stock Price”) paid per share of the Company’s Common Stock in the transaction constituting the
Change of Control. If the holders of the Company’s Common Stock receive only cash in the
transaction, the Stock Price shall be the cash amount paid per share of the Company’s Common Stock.
Otherwise, the Stock Price shall be equal to the average Closing Price per share of the Company’s
Common Stock over the ten Trading Day period ending on the Trading Day immediately preceding the
Effective Date.

     The following table shows what the Make-Whole Premium would be for each hypothetical Stock
Price and Effective Date set forth below, expressed as a percentage of the principal amount of the
Notes.

Make-Whole Premium Upon a Change of Control (% of Face Value)

	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	 	 	Stock Price on Effective Date
	Effective Date
	 	$	0.50	 	 	$	0.60	 	 	$	0.70	 	 	$	0.80	 	 	$	0.90	 	 	$	1.00	 	 	$	1.25	 	 	$	1.50	 
	June 22, 2010
	 	 	0.0	%	 	 	14.2	%	 	 	13.1	%	 	 	12.1	%	 	 	11.3	%	 	 	10.6	%	 	 	9.2	%	 	 	8.1	%
	April 5, 2011
	 	 	0.0	%	 	 	14.0	%	 	 	12.7	%	 	 	11.6	%	 	 	10.6	%	 	 	9.9	%	 	 	8.3	%	 	 	7.2	%
	October 5, 2011
	 	 	0.0	%	 	 	13.8	%	 	 	12.1	%	 	 	10.8	%	 	 	9.7	%	 	 	8.8	%	 	 	7.1	%	 	 	6.0	%
	April 5, 2012
	 	 	0.0	%	 	 	13.3	%	 	 	11.2	%	 	 	9.6	%	 	 	8.3	%	 	 	7.2	%	 	 	5.5	%	 	 	4.4	%
	October 5, 2012
	 	 	0.0	%	 	 	12.7	%	 	 	10.1	%	 	 	7.9	%	 	 	6.2	%	 	 	5.0	%	 	 	3.4	%	 	 	2.5	%
	April 5, 2013
	 	 	0.0	%	 	 	12.5	%	 	 	9.1	%	 	 	6.3	%	 	 	4.1	%	 	 	2.6	%	 	 	1.0	%	 	 	0.4	%
	October 5, 2013
	 	 	0.0	%	 	 	12.5	%	 	 	8.3	%	 	 	4.8	%	 	 	2.0	%	 	 	0.5	%	 	 	0.0	%	 	 	0.0	%
	April 5, 2014
	 	 	0.0	%	 	 	13.1	%	 	 	8.6	%	 	 	4.9	%	 	 	2.0	%	 	 	0.4	%	 	 	0.0	%	 	 	0.0	%
	October 5, 2014
	 	 	0.0	%	 	 	13.6	%	 	 	9.1	%	 	 	5.5	%	 	 	2.7	%	 	 	0.7	%	 	 	0.0	%	 	 	0.0	%
	April 5, 2015
	 	 	0.0	%	 	 	11.8	%	 	 	7.2	%	 	 	4.0	%	 	 	1.7	%	 	 	0.4	%	 	 	0.0	%	 	 	0.0	%
	October 5, 2015
	 	 	0.0	%	 	 	0.0	%	 	 	0.0	%	 	 	0.0	%	 	 	0.0	%	 	 	0.0	%	 	 	0.0	%	 	 	0.0	%

24

 

     The Make-Whole Premiums set forth above are based upon an interest rate of 5.50%, a
reference price per share of the Common Stock of $0.38 and a Conversion Rate that results in a
Conversion Price of $0.60.

     The actual Stock Price and Effective Date may not be set forth on the table, in which case:

               (i) If the actual Stock Price on the Effective Date is between two Stock Prices on the table
or the actual Effective Date is between two Effective Dates on the table, the Make-Whole Premium
will be determined by a straight-line interpolation between the Make-Whole Premiums set forth for
the two Stock Prices and the two Effective Dates on the table based on a 365-day year, as
applicable;

               (ii) If the Stock Price on the Effective Date exceeds $1.50 per share (subject to adjustment
described below), no Make-Whole Premium will be paid; and

               (iii) If the Stock Price on the Effective Date is less than or equal to $0.50 per share
(subject to adjustment described below), no Make-Whole Premium will be paid.

     The Stock Prices set forth in the first column of the table above will be adjusted as of any
date on which the Conversion Rate is adjusted. The adjusted Stock Prices will equal the Stock
Prices applicable immediately prior to such adjustment multiplied by a fraction, the numerator of
which is the Conversion Rate immediately prior to the adjustment giving rise to the Stock Price
adjustment and the denominator of which is the Conversion Rate so adjusted.

     The Company shall pay, at its option, the Change of Control Purchase Price and/or Make-Whole
Premium in cash or shares of Preferred Stock or, in the case of the Make-Whole Premium, the same
form of consideration used to pay for the shares of Common Stock in connection with the transaction
constituting the Change of Control.

     If the Company pays the Change of Control Purchase Price and/or Make-Whole Premium in cash,
the payment shall be made on the Change of Control Purchase Date. If the Company pays the Change
of Control Purchase Price and/or Make-Whole Premium in shares of Preferred Stock, the payment shall
be made not later than three (3) Business Days after the Change of Control Purchase Date, and the
value of each share of Preferred Stock to be delivered in respect of the Change of Control Purchase
Price and/or Make-Whole Premium shall be deemed to be equal to the product of (A) the average
Closing Price per share of Common Stock over the ten Trading Day period ending on the Trading Day
immediately preceding the Change of Control Purchase Date, and (B) the number of whole shares of
Common Stock into which each share of Preferred Stock is then convertible (without giving effect to
any limitations on conversion thereof set forth in Section 6 of the Preferred C of D). The Company
may pay the Change of Control Purchase Price and/or Make-Whole Premium in shares of Preferred Stock
only if the information necessary to calculate the Closing Price per share of Common Stock is
published in a daily newspaper of general circulation or by other appropriate means.

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     If the Company pays the Make-Whole Premium in the same form of consideration used to pay for
the shares of the Company’s Common Stock in connection with the transaction constituting the Change
of Control, the payment shall be made on the Change of Control Purchase Date and the value of the
consideration to be delivered in respect of the Make-Whole Premium will be calculated as follows:

               (i) securities that are traded on a United States national securities exchange or approved for
quotation on any system of automated dissemination of quotations of securities prices will be
valued based on the average Closing Price over the ten Trading Day period ending on the Trading Day
immediately preceding the Change of Control Purchase Date;

               (ii) other securities, assets or property (other than cash) will be valued based on 98% of the
average of the fair market value of such securities, assets or property (other than cash) as
determined by two independent nationally recognized investment banks selected by the Trustee; and

               (iii) 100% of any cash.

     Whenever in this Indenture (including Sections 2.01, 6.01(a) and 6.07 hereof) or Exhibit A
annexed hereto there is a reference, in any context, to the principal of any Note as of any time,
such reference shall be deemed to include reference to the Change of Control Purchase Price in
respect to such Note to the extent that such Change of Control Purchase Price is, was or would be
so payable at such time, plus any applicable Make-Whole Premium, and express mention of the Change
of Control Purchase Price in any provision of this Indenture shall not be construed as excluding
the Change of Control Purchase Price in those provisions of this Indenture when such express
mention is not made.

     A “Change of Control” of the Company shall be deemed to have occurred at such time after the
original issuance of the Notes as any of the following events shall occur:

               (iv) any “person” or “group” (as such terms are used in Sections 13(d) and 14(d) of the
Securities Exchange Act of 1934, as amended (the “Exchange Act”), acquires the beneficial ownership
(as defined in Rules 13d-3 and 13d-5 under the Exchange Act, except that such Person shall be
deemed to have “beneficial ownership” of all securities that such Person has the right to acquire,
whether such right is exercisable immediately or only after the passage of time), directly or
indirectly, through a purchase, merger or other acquisition transaction, of 50% or more of the
total voting power of the total outstanding Voting Stock of the Company other than an acquisition
by the Company, any of its Subsidiaries or any employee benefit plans of the Company; or

               (v) the Company consolidates with, or merges with or into, another Person or conveys,
transfers, leases or otherwise disposes of all or substantially all of its assets to any Person, or
any Person consolidates with or merges with or into the Company other than:

                    (A) any transaction (1) that does not result in any reclassification, conversion, exchange or
cancellation of outstanding shares of the Capital Stock of the Company and (2) pursuant to which
holders of the Capital Stock of the Company immediately prior to the transaction are entitled to
exercise, directly or indirectly, 50% or more

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of the total voting power of all shares of the Capital Stock of the Company entitled to vote
generally in the election of directors of the continuing or surviving person immediately after the
transaction;

                    (B) any merger 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

                    (C) any transaction in which all of the consideration for the Common Stock (excluding cash
payments for fractional shares and cash payments made in respect of dissenters’ appraisal rights)
in the transaction or transactions constituting the Change of Control consists of common stock
traded on a United States national securities exchange or which will be so traded when issued or
exchanged in connection with the Change of Control, and as a result of such transaction or
transactions the Notes become convertible solely into such common stock, or

               (vi) during any consecutive two-year period, individuals who at the beginning of that two-year
period constituted the Board of Directors (together with any new directors whose election to the
Board of Directors, or whose nomination for election by the stockholders of the Company, was
approved by a vote of a majority of the directors then still in office who were either directors at
the beginning of such period or whose election or nomination for election were previously so
approved, other than any such new director whose initial assumption of office occurred as a result
of either an actual or threatened election contest (as such terms are used in Rule 14a-11 of
Regulation 14A promulgated under the Exchange Act) or other actual or threatened solicitation of
proxies or consents by or on behalf of a Person or group other than the Board of Directors) cease
for any reason to constitute a majority of the Board of Directors then in office; or

               (vii) the stockholders of the Company pass a special resolution approving a plan of
liquidation or dissolution and no additional approvals of the Company’s stockholders are required
under applicable law to cause a liquidation or dissolution.

     Beneficial ownership will be determined in accordance with Rule 13d-3 promulgated by the SEC
under the Exchange Act. The term “person” includes any syndicate or group that would be deemed a
“person” under Section 13(d)(3) of the Exchange Act.

          (b) The following are conditions to the Company’s election to pay the Change of Control
Purchase Price and/or Make-Whole Premium in Preferred Stock:

               (i) The shares of Preferred Stock to be issued upon repurchase of Notes hereunder and shares
of Common Stock issuable upon conversion of such shares of Preferred Stock:

                    (A) shall not require registration under any federal securities law before such shares may be
freely transferable without being subject to any transfer restrictions under the Securities Act
upon repurchase or, if such registration is required, such

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registration shall be completed and shall become effective prior to the Change of Control
Purchase Date; and

                    (B) shall not require registration with, or approval of, any governmental authority under any
state law or any other federal law before shares may be validly issued or delivered upon repurchase
or if such registration is required or such approval must be obtained, such registration shall be
completed or such approval shall be obtained prior to the Change of Control Purchase Date.

               (ii) The shares of Common Stock issuable upon conversion of the Preferred Stock to be issued
upon repurchase of Notes hereunder are, or shall have been, approved for listing on the NYSE Amex
or listed on another national securities exchange, in any case, prior to the Change of Control
Purchase Date.

               (iii) All shares of Preferred Stock which may be issued upon repurchase of Notes and shares of
Common Stock which may be issued upon conversion of such shares of Preferred Stock will be issued
out of the Company’s authorized but unissued Preferred Stock or Common Stock, as applicable, and
will, upon issue, be duly and validly issued and fully paid and nonassessable and free of any
preemptive or similar rights.

               (iv) The Shareholder Approval has been obtained.

               (v) All of the Equity Conditions are satisfied (or waived in writing by the Holders of a
majority in aggregate principal amount of the Notes then outstanding).

     If any of the conditions set forth in clauses (i) through (v) of this Section 3.05(b) are not
satisfied in accordance with the terms thereof, the Change of Control Purchase Price and Make-Whole
Premium shall be paid by the Company only in cash. The Company may not change the form of
consideration to be paid with respect to the Change of Control Purchase Price and Make-Whole
Premium once it has given notice set forth in Section 3.05(d) to Holders, except as described in
the immediately preceding sentence.

          (c) Notwithstanding the foregoing, in the case of a Public Acquirer Change of Control (as
defined below), the Company may, in lieu of paying a Make-Whole Premium as described in Section
3.05(a), elect to adjust the Conversion Rate and the related conversion obligation such that from
and after the effective date of such Public Acquirer Change of Control, Holders of the Notes will
be entitled to convert the Notes (without giving effect to any limitations on conversion under
Section 10.04) into a number of shares of Public Acquirer Common Stock (as defined below) by
multiplying the Conversion Rate in effect immediately before the Public Acquirer Change of Control
by a fraction:

               (i) the numerator of which will be (i) in the case of a share exchange, consolidation, merger
or binding share exchange, pursuant to which the Common Stock is converted into cash, securities or
other property, the average value of all cash and any other consideration (as determined by the
Board of Directors) paid or payable per share of Common Stock or (ii) in the case of any other
Public Acquirer Change of Control, the average of the last reported sale price 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

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               (ii) the denominator of which will be the average of the last reported sale price 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.

     A “Public Acquirer Change of Control” means any event constituting a Change of Control that
would otherwise obligate the Company to pay a Make-Whole Premium as described in Section 3.05(a)
and the acquirer (or any entity that is a directly or indirectly wholly-owned Subsidiary of the
acquirer or of which the acquirer is a directly or indirectly wholly-owned Subsidiary) has a class
of common stock traded on a national securities exchange or which will be so traded when issued or
exchanged in connection with such event (the “Public Acquirer Common Stock”).

     After the adjustment of the Conversion Rate in connection with a Public Acquirer Change of
Control, the Conversion Rate will be subject to further similar adjustments in the event that any
of the events described in Section 10.01 occur thereafter.

     Upon a Public Acquirer Change of Control, if the Company so elects to adjust the Conversion
Rate as described in this Section 3.05(c), Holders may convert the Notes at the adjusted Conversion
Rate described in the first paragraph of this Section 3.05(c) but will not be entitled to the
Make-Whole Premium described under Section 3.05(a). The Company is required to notify Holders of
its election in writing of such transaction. In addition, the Holder can also, subject to certain
conditions, require the Company to repurchase all or a portion of its Notes as described under
Section 3.05(a).

     (d) Prior to or on the 30th day after the occurrence of a Change of Control, the Company, or,
at the written request and expense of the Company prior to or on the 30th day after such
occurrence, the Trustee, shall give to all Holders, in the manner provided in Section 11.02 hereof,
notice of the occurrence of the Change of Control and of the purchase right set forth herein
arising as a result thereof. The Company shall also deliver a copy of such notice of a purchase
right to the Trustee. The notice shall include a form of Change of Control Purchase Notice (as
defined in Section 3.05(e)) to be completed by the Holder, shall certify that the Equity Conditions
have been satisfied as of the date of such notice and shall state:

     (1) briefly, the events causing a Change of Control and the date of such Change of
Control;

     (2) the date by which the Change of Control Purchase Notice pursuant to this Section 3.05
must be given;

     (3) the Change of Control Purchase Date;

     (4) the Change of Control Purchase Price and whether the Change of Control Purchase Price
will be payable in cash or Preferred Stock;

     (5) the name and address of the Paying Agent and the Conversion Agent;

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     (6) that Notes as to which a Change of Control Purchase Notice has been given may be
converted pursuant to Article 10 hereof only if the Change of Control Purchase Notice has been
withdrawn in accordance with the terms of this Indenture;

     (7) that Notes must be surrendered to the Paying Agent to collect payment;

     (8) that the Change of Control Purchase Price for any Note as to which a Change of
Control Purchase Notice has been duly given and not withdrawn will be paid promptly following
the later of the Change of Control Purchase Date and the time of surrender of such Note as
described in (7) above;

     (9) briefly, the procedures the Holder must follow to exercise rights under this Section
3.05;

     (10) briefly, the conversion rights of the Notes, including the Conversion Rate and any
adjustments thereto;

     (11) the procedures for withdrawing a Change of Control Purchase Notice;

     (12) the CUSIP number of the Notes;

     (13) whether a Make-Whole Premium shall be paid by the Company and the form of
consideration to be paid in respect of the Make-Whole Premium; and

     (14) if a Make-Whole Premium is to be paid by the Company, that a Make-Whole Premium
shall be paid by the Company to Holders of Notes who have converted their Notes into the
Company’s Common Stock or Preferred Stock on or after the date the Company has given notice to
all Holders in accordance with Section 3.05(d) and on or before the Change of Control Purchase
Date.

     (e) A Holder may exercise its rights specified in this Section 3.05 upon delivery of a written
notice of purchase (“Change of Control Purchase Notice”) to the Paying Agent prior to the Change of
Control Purchase Date, stating:

     (1) the certificate number of the Note, if any, which the Holder will deliver to be
purchased or the appropriate Depositary procedures if the Notes are not in certificated form;

     (2) the portion of the principal amount of the Note which the Holder will deliver to be
purchased, which portion must be $1,000 or any whole multiple thereof; and

     (3) that such Note shall be purchased pursuant to the terms and conditions specified in
paragraph 5 on the reverse side of the Notes and in this Indenture.

     If the Notes are not in certificated form, a Holder’s Change of Control Purchase Notice must
comply with the appropriate DTC procedures.

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     The delivery of such Note to the Paying Agent prior to the Change of Control Purchase Date
(together with all necessary endorsements) at the offices of the Paying Agent shall be a condition
to the receipt by the Holder of the Change of Control Purchase Price therefor; provided, however,
that such Change of Control Purchase Price shall be so paid pursuant to this Section 3.05 only if
the Note so delivered to the Paying Agent shall conform in all respects to the description thereof
set forth in the related Change of Control Purchase Notice.

     The Company shall purchase from the Holder thereof, pursuant to this Section 3.05, a portion
of a Note so delivered for purchase if the principal amount of such portion is $1,000 or an
integral multiple of $1,000. Provisions of this Indenture that apply to the purchase of all of a
Note also apply to the purchase of such portion of such Note.

     Any purchase 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 Change of Control Purchase Date and the time of delivery of the Note to the Paying
Agent in accordance with this Section 3.05.

     Notwithstanding anything herein to the contrary, any Holder delivering to the Paying Agent the
Change of Control Purchase Notice contemplated by this Section 3.05 shall have the right to
withdraw such Change of Control Purchase Notice at any time prior to the close of business on the
Business Day prior to the Change of Control Purchase Date by delivery of a written notice of
withdrawal to the Paying Agent in accordance with Section 3.06.

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

     Section 3.06. Effect of Change of Control Purchase Notice. Upon receipt by the Paying Agent
of the Change of Control Purchase Notice specified in Section 3.05(e), the Holder of the Note in
respect of which such Change of Control Purchase Notice was given shall (unless such Change of
Control Purchase Notice is withdrawn as specified in the following paragraph) thereafter be
entitled to receive solely the Change of Control Purchase Price with respect to such Note. Such
Change of Control Purchase Price (along with the Make-Whole Premium, if any) shall be paid to such
Holder, subject to receipt of consideration for the Notes by the Paying Agent, promptly following
the later of (x) the Change of Control Purchase Date with respect to such Note (provided the
conditions in Section 3.05(e), as the case may be, have been satisfied) or (y) the time of delivery
of such Note to the Paying Agent by the Holder thereof in the manner required by Section 3.05(e),
as the case may be. Notes in respect of which a Change of Control Purchase 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 Change of Control Purchase Notice unless such Change of Control Purchase
Notice has first been validly withdrawn as specified in the following paragraph.

     A Change of Control Purchase Notice may be withdrawn by means of a written notice of
withdrawal delivered to the office of the Paying Agent in accordance with the Change of Control
Purchase Notice at any time prior to the close of business on the Business Day immediately
preceding the Change of Control Purchase Date specifying:

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     (1) the certificate number of the Note in respect of which such notice of withdrawal is
being submitted or, if not in certificated form, the applicable Depositary procedures,

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

     (3) the principal amount, if any, of such Note which remains subject to the original
Change of Control Purchase Notice and which has been or will be delivered for purchase by the
Company.

     Section 3.07. Deposit of Change of Control Purchase Price. Prior to 10:00 a.m. (New York City
time) on the Change of Control Purchase Date, the Company shall deposit with the Trustee or with
the Paying Agent (or, if the Company or a Subsidiary or an Affiliate of either of them is acting as
the Paying Agent, shall segregate and hold in trust as provided in Section 2.05) an amount of cash
(in immediately available funds if deposited on such Business Day) or shares of Preferred Stock
sufficient to pay the aggregate Change of Control Purchase Price of all the Notes or portions
thereof which are to be purchased as of the Change of Control Purchase Date and an amount in cash
or shares of Preferred Stock sufficient to pay any Make-Whole Premium.

     If the Trustee or other Paying Agent appointed by the Company, or the Company or an Affiliate
of the Company, if it or such Affiliate is acting as the Paying Agent, holds cash or shares of
Preferred Stock sufficient to pay the aggregate Change of Control Purchase Price of all the Notes
or portions thereof that are to be purchased as of the Change of Control Purchase Date and an
amount in cash or shares of Preferred Stock sufficient to pay any Make-Whole Premium, then
immediately after the Change of Control Purchase Date (i) such Notes will cease to be outstanding,
(ii) interest on such Notes will cease to accrue and (iii) all other rights of the Holders of such
Notes will terminate other than the right to receive the Change of Control Purchase Price and the
Make-Whole Premium, if any, upon delivery of the Notes, whether or not book-entry transfer of the
Notes has been made or the Notes have been delivered to the Trustee or Paying Agent.

     Section 3.08. Notes Purchased in Part. Any Note which is to be purchased only in part shall
be surrendered at the office of the Paying Agent (with, if the Company or the Trustee so requires,
due endorsement by, or a written instrument of transfer in form satisfactory to the Company and the
Trustee duly executed by, the Holder thereof or such Holder’s attorney duly authorized in writing)
and the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such
Note, without service charge, a new Note or Notes, of any authorized denomination as requested by
such Holder in aggregate principal amount equal to, and in exchange for, the portion of the
principal amount of the Note so surrendered which is not purchased.

     Section 3.09. Covenant to Comply with Securities Laws upon Purchase of Notes. In connection
with any offer to purchase or purchase of Notes under Section 3.05 hereof (provided that such offer
or purchase constitutes an “issuer tender offer” for purposes of Rule 13e-4 (which term, as used
herein, includes any successor provision thereto) under the Exchange Act at the time of such offer
or purchase), the Company shall (i) comply with Rule 13e-4, Rule 14e-1 and

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any other tender offer rules under the Exchange Act which may then be applicable, (ii) file
the related Schedule TO (or any successor schedule, form or report) or any other schedule required
under the Exchange Act, and (iii) otherwise comply with all federal and state securities laws so as
to permit the rights and obligations under Section 3.05 to be exercised in the time and in the
manner specified in Section 3.05.

     Section 3.10. Repayment to the Company. The Trustee and the Paying Agent shall return to the
Company any cash or shares of Preferred Stock that remain unclaimed as provided in paragraph 12 of
the Notes, together with interest or dividends, if any, thereon, held by them for the payment of
the Change of Control Purchase Price and Make-Whole Premium, if any; provided, however, that to the
extent that the aggregate amount of cash or shares of Preferred Stock deposited by the Company
pursuant to Section 3.07 exceeds the aggregate Change of Control Purchase Price of the Notes and
Make-Whole Premium, if any, or portions thereof which the Company is obligated to purchase as of
the Change of Control Purchase Date, then the Trustee shall return to the Company (i) any such
excess cash together with interest or dividends, if any, thereon promptly after the Business Day
following the Change of Control Purchase Date and (ii) any such excess shares of Preferred Stock
promptly after the fourth Business Day following the Change of Control Purchase Date.

ARTICLE 4

Covenants

     Section 4.01. Payment of Principal, Premium, Interest on the Notes. The Company will duly and
punctually pay the principal of and premium (including any Make-Whole Premium or Conversion
Make-Whole Payment), if any, and interest in respect of the Notes, and any payment required under
Article 10 hereof, in accordance with the terms of the Notes and this Indenture. The Company will
deposit or cause to be deposited with the Trustee as directed by the Trustee, no later than the day
of the Stated Maturity of any Note or installment of interest, or other date upon which any payment
is due, all payments so due. Principal amount, Change of Control Purchase Price, payments required
under Article 10 hereof, cash interest and any applicable Make-Whole Premium or Conversion
Make-Whole Payment shall be considered paid on the applicable date due if on such date (or, in the
case of a Change of Control Purchase Price or any applicable Make-Whole Premium on the Business Day
following the applicable Change of Control Purchase Date) the Trustee or the Paying Agent holds, in
accordance with this Indenture, money or Notes, if permitted hereunder, sufficient to pay all such
amounts then due.

     The Company shall, to the extent permitted by law, pay cash interest on overdue amounts at the
rate per annum set forth in paragraph 1 of the Notes, which interest shall accrue from the date
such overdue amount was originally due to the date payment of such amount, including interest
thereon, has been made or duly provided for. All such interest shall be payable on demand.

     Section 4.02. Reports by the Company.

          (a) At all times during the period (the “Reporting Period”) commencing on the date of this
Indenture and ending on the earliest of (i) the date on which no Participating Investor is the
Beneficial Holder of any Notes or any shares of Conversion Stock issued upon

33

 

conversion thereof or upon conversion of any Preferred Stock, (ii) the date that is one year
after the first date on which not more than 5% of the aggregate principal amount of Notes issued on
the date of this Indenture remains outstanding and (iii) the occurrence of a Change of Control
immediately following which (I) the Common Stock is no longer traded on a national securities
exchange or the OTC Bulletin Board (or successor thereto) and (II) the Company is no longer subject
to the reporting requirements of Section 13 or 15(d) of the Exchange Act (a “Non-Reporting Change
of Control”) and which is not a Public Acquirer Change of Control, the Company shall timely (giving
effect to any extensions of time that may be permitted by Rule 12b-25 under the Exchange Act) file
with the SEC all reports, statements and other documents required to be filed by the Company with
the SEC pursuant to the Exchange Act (excluding current reports on Form 8-K); provided that, if at
any time during the Reporting Period, the Company is no longer subject to the reporting
requirements of Section 13 or 15(d) of the Exchange Act (other than as a result of a Public
Acquirer Change of Control), the Company shall timely (giving effect to any extensions of time that
may be permitted by Rule 12b-25 under the Exchange Act) file with the SEC (unless the SEC will not
accept such filings) annual reports on Form 10-K and quarterly reports on Form 10-Q, as if the
Company continued to be subject to such reporting requirements. The Company’s obligations under
this Section 4.02(a) shall not apply during the Reporting Period following a Non-Reporting
Change of Control that is a Public Acquirer Change of Control if the issuer of the Public Acquirer
Common Stock shall thereafter comply with the Company’s obligations under this Section 4.02 as if
such issuer were the Company.

          (b) The Company shall file with the Trustee, and transmit to the Holders, such information,
documents and other reports and such summaries thereof, as may be required pursuant to the TIA at
the times and in the manner provided pursuant to the TIA, whether or not the Notes are governed by
the TIA; provided, however, that any such information, documents or reports required to be filed
with the SEC pursuant to Section 13 or 15(d) of the Exchange Act shall be filed with the Trustee
within fifteen (15) days after the same is so required to be filed with the SEC; provided, however,
that delivery may be effected in accordance with the provisions of Rule 19a-1 under the TIA if and
during any time the Company is eligible thereunder; and provided further, that the Company shall
not be required to deliver to the Trustee any material for which the Company has sought and
received confidential treatment by the SEC. Delivery of such reports, information and documents to
the Trustee is for informational purposes only and the Trustee’s receipt of such shall not
constitute constructive notice of any information contained therein or determinable from
information contained therein, including the Company’s compliance with any of its covenants
hereunder (as to which the Trustee is entitled to rely exclusively on Officers’ Certificates).

          (c) At any time during the Reporting Period that the Company is subject to the reporting
requirements of Section 13 or 15(d) of the Exchange Act, if the Company fails to timely file any
report, statement or other document required to be filed by the Company with the SEC pursuant to
such reporting requirements (other than Current Reports on Form 8-K), the Company shall publicly
announce its failure to file through a press release or a Current Report on Form 8-K on the
Business Day following the due date of such report, statement or other document.

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          (d) The availability of the foregoing materials on the SEC’s EDGAR service (or successor
thereto) shall be deemed to satisfy the Company’s delivery obligations to the Trustee and the
Holders.

     Section 4.03. Compliance Certificate. The Company shall deliver to the Trustee within 120
days after the end of each fiscal year of the Company (beginning with the fiscal year ending on
December 31, 2010) an Officers’ Certificate, stating whether or not to the best knowledge of the
signers thereof the Company is in default in the performance and observance of any of the terms,
provisions and conditions of this Indenture (without regard to any period of grace or requirement
of notice provided hereunder) and if the Company shall be in default, specifying all such defaults
and the nature and status thereof of which they may have knowledge.

     Section 4.04. Further Instruments and Acts. Upon request of the Trustee, the Company will
execute and deliver such further instruments and do such further acts as may be reasonably
necessary or proper to carry out more effectively the purposes of this Indenture.

     Section 4.05. Maintenance of Office or Agency. The Company will maintain in the Borough of
Manhattan, the City of New York, an office or agency of the Trustee, Note Registrar, Paying Agent
and Conversion Agent where Notes may be presented or surrendered for payment, where Notes may be
surrendered for registration of transfer, exchange, purchase or conversion and where notices and
demands to or upon the Company in respect of the Notes and this Indenture may be served. Each
office or agency of the Trustee in the Borough of Manhattan, the City of New York, shall initially
be one such office or agency for all of the aforesaid purposes. The Company shall give prompt
written notice to the Trustee of the location, and of any change in the location, of any such
office or agency (other than a change in the location of the office of 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 address of the Trustee set forth in Section 11.02.

     The Company may also from time to time designate one or more other offices or agencies where
the Notes may be presented or surrendered for any or all such purposes and may from time to time
rescind such designations; provided, however, that no such designation or rescission shall in any
manner relieve the Company of its obligation to maintain an office or agency in the Borough of
Manhattan, the City of New York, for such purposes.

     Section 4.06. Delivery of Certain Information. At any time when the Company is not subject to
Section 13 or 15(d) of the Exchange Act, upon the request of a Holder or any beneficial holder of
Notes or shares of Conversion Stock issued upon conversion thereof or upon conversion of any
Preferred Stock, the Company will promptly furnish or cause to be furnished Rule 144A Information
(as defined below) to such Holder or any beneficial holder of Notes or holder of shares of
Conversion Stock issued upon conversion of Notes or upon conversion of any Preferred Stock, or to a
prospective purchaser of any such security designated by any such holder, as the case may be, to
the extent required to permit compliance by such Holder or holder with Rule 144A under the
Securities Act in connection with the resale of any such security. “Rule 144A Information” shall
be such information as is specified pursuant to Rule 144A(d)(4) under the Securities Act.

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     Section 4.07. Existence. Subject to Article 5, the Company will do or cause to be done all
things necessary to preserve and keep in full force and effect its and its Subsidiaries’ existence
and rights (charter and statutory); provided, however, that the Company shall not be required to
preserve or cause its Subsidiaries 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
its Subsidiaries and that the loss thereof is not disadvantageous in any material respect to the
Noteholders.

     Section 4.08. Maintenance of Properties. The Company will cause all properties used or useful
in the conduct of its business or the business of any Significant Subsidiary to be maintained and
kept in good condition, repair and working order and supplied with all necessary equipment and will
cause to be made all necessary repairs, renewals, replacements, betterments and improvements
thereof, all as in the judgment of the Company may be necessary so that the business carried on in
connection therewith may be properly and advantageously conducted at all times; provided, however,
that nothing in this Section shall prevent the Company from discontinuing the operation or
maintenance of any of such properties if such discontinuance is, in the judgment of the Company,
desirable in the conduct of its business or the business of any Significant Subsidiary and not
disadvantageous in any material respect to the Noteholders.

     Section 4.09. 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, (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 and (iii) all stamps and other duties, if
any, which may be imposed by the United States or any political subdivision thereof or therein in
connection with the issuance, transfer, exchange or conversion of any Notes or with respect to this
Indenture; provided, however, that, in the case of clauses (i) and (ii), 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 and its Subsidiaries taken as a whole, or (B) if the amount, applicability or validity is
being contested in good faith by appropriate proceedings for which adequate reserves in accordance
with GAAP are being maintained by the Company or any Subsidiary.

     Section 4.10. Subsidiary Guarantees. The Company shall cause each of its Subsidiaries (other
than a Foreign Subsidiary if a 956 Impact would arise as a result thereof) to guaranty the
Company’s payment obligations hereunder, in respect of the Notes and under the other Transaction
Documents (as defined in the Guaranty) by causing such Subsidiary to execute and deliver the
Guaranty or a joinder thereto in substantially the form attached hereto.

     Section 4.11. Limitation on Indebtedness. The Company shall not, and shall not suffer or
permit any of its Subsidiaries to, create, incur, assume, permit to exist, or otherwise become or
remain directly or indirectly liable with respect to, any Indebtedness, except (i) Indebtedness
permitted under the Credit Agreement (other than pursuant to Section 7.01(j) thereof), as
in effect on the date of this Indenture, without amendment or modification thereafter, and
additional reserve base loans from a commercial bank on customary terms, (ii) unsecured
Indebtedness

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contractually subordinated to the Indebtedness hereunder, under the Notes and under the
Guaranty on terms no less favorable than those set forth on Exhibit C or otherwise acceptable to
the Holders of a majority of the outstanding principal amount of the Notes at the time such
Indebtedness is incurred and which does not (A) mature or otherwise require or permit redemption or
repayment prior to the maturity date of the Notes or (B) require cash interest payments in excess
of seven percent (7%) per annum (such Indebtedness the “Permitted Subordinated Indebtedness”),
(iii) Indebtedness under the 2011 Notes outstanding immediately following the Closing Date less the
aggregate principal amount thereof subsequently repaid, prepaid or converted pursuant to the terms
of the 2011 Notes, (iv) Indebtedness hereunder, under the Notes and under the Guaranty and (v)
other Indebtedness existing on the Closing Date as set forth on Schedule 4.11 hereto, as in
existence on the date of this Indenture without amendment or modification thereafter.

     Section 4.12. Limitation on Liens. Company shall not, and shall not suffer or permit any of
its Subsidiaries to, directly or indirectly, make, create, incur, assume or suffer to exist any
Lien upon or with respect to any part of its property or assets, whether now owned or hereafter
acquired, other than (i) Liens existing as of the Closing Date, (ii) Liens permitted under the
Credit Agreement (other than Section 7.02(h) thereof), as in effect on the date of this Indenture,
without amendment or modification thereafter, (iii) Liens securing other Indebtedness permitted
under clause (i) of Section 4.11 hereof, provided such Liens do not extend to any assets that would
not otherwise be permitted to secure Indebtedness under the Credit Agreement and (iv) Liens on Oil
& Gas Interests (as defined in the Credit Agreement, as in effect on the date of this Indenture,
without amendment or modification thereafter) to secure Indebtedness permitted under clause (i) of
Section 4.11 hereof (the Liens specified in the foregoing clauses (ii) through (iv) being
referred to as “Permitted Liens”).

     Section 4.13. Limitations on Dividends. The Company shall not, and shall not suffer or permit
any of its Subsidiaries to, (i) declare or make any dividend payment or other distribution of
assets, properties, cash, rights, obligations or securities on account of any of its capital stock
or other equity interests or (ii) purchase, redeem or otherwise acquire for value any of its
capital stock or other equity interests now or hereafter outstanding, except (w) any Subsidiary of
Company may declare and pay dividends to Company or any Subsidiary of Company, (x) any Person may
declare and make dividend payments or other distributions payable solely in its capital stock or
other equity interests, (y) the Company may fund the purchase, redemption or acquisition from
officers, directors and employees of any of its capital stock or other equity interests upon the
death, disability, retirement or termination of employment of such officer, director or employee
and (z) the Company may purchase, redeem or otherwise acquire for value any of its capital stock or
other equity interests pursuant to stock option plans or other benefits plans for management and
employees of the Company and its Subsidiaries in an aggregate amount not to exceed $1,000,000 in
any fiscal year.

     Section 4.14. Listing. The Company shall promptly after the date of this Indenture secure the
listing of all of the shares of Common Stock issuable upon conversion of the Notes and the
Preferred Stock (the “Listed Securities”) upon each national securities exchange and automated
quotation system, if any, upon which the Common Stock is then listed (subject to official notice of
issuance) and shall at all times hereafter maintain such listing of all Listed Securities upon each
such national securities exchange and automated quotation system at all

37

 

times when the Common Stock is listed on such national securities exchange. At all times
during the Reporting Period, the Company shall use its commercially reasonable efforts to cause the
Common Stock to remain listed on a national securities exchange or automated quotation system. The
Company’s obligations under this Section 4.14 shall not apply during the Reporting Period
following a Non-Reporting Change of Control that is a Public Acquirer Change of Control.

     Section 4.15. Shareholder Approval.

          (a) So long as any Notes or shares of Preferred Stock remain outstanding, the Company shall
use its reasonable best efforts, in accordance with the applicable corporate law of the State of
Nevada and the Company’s Articles of Incorporation and Bylaws, to have the shareholders of the
Company approve the Company’s issuance of all of the shares of Common Stock issuable upon
conversion of the Notes (and upon conversion of any Preferred Stock issuable upon conversion of the
Notes) pursuant to this Indenture (and the Preferred C of D, as applicable) in accordance with
applicable law and the applicable rules and regulations of the NYSE Amex or any other U.S. national
or regional securities exchange on which the Common Stock is listed (the “Proposal”), as soon as
practicable after the Closing Date (the “Shareholder Approval”) including: (i) duly calling, giving
notice of, convening and holding a meeting of the shareholders of the Company (the “First
Shareholders Meeting”) to be held as promptly as practicable, and in any event by September 15,
2010, for the purpose of approving the Proposal; (ii) using its commercially reasonable efforts to
solicit from its shareholders proxies in favor of the approval of the Proposal and taking all other
action reasonably necessary or advisable to secure the Shareholder Approval; and (iii) if the
Company does not obtain the Shareholder Approval at the First Shareholders Meeting, calling a
shareholders meeting to be held no later than the date that is six (6) months after the First
Shareholders Meeting (the “Second Shareholders Meeting”) for the purpose of obtaining the
Shareholder Approval, and, if the Company does not obtain the Shareholder Approval at the Second
Shareholders Meeting, if any, submitting the Proposal for approval at each annual meeting of the
Company’s shareholders held thereafter, in each case to seek the Shareholder Approval, until the
date on which the Shareholder Approval is obtained (each of any such annual meeting, the First
Shareholders Meeting and the Second Shareholders Meeting being referred to as, a “Shareholders
Meeting”).

          (b) In connection with each Shareholders Meeting, the Company will use its reasonable best
efforts to (i) as promptly as reasonably practicable before the date of such Shareholders Meeting
(and in the case of the First Shareholders Meeting, as promptly as reasonably practicable after the
date of this Indenture), prepare and file with the SEC a proxy statement (as it may be amended or
supplemented from time to time, a “Proxy Statement”) related to the consideration of the Proposal
at the Shareholders Meeting, (ii) respond as promptly as reasonably practicable to any comments
received from the SEC with respect to such filings and provide copies of such comments to one
counsel designated by the Beneficial Holder that acquired the greatest aggregate principal amount
of the Notes on the Closing Date (which shall be Katten Muchin unless the Company is otherwise
notified in writing prior to the required delivery date (“Counsel”)) promptly upon receipt and
provide copies of proposed responses to Counsel at least one Business Day prior to filing to allow
Counsel the opportunity to provide comments, (iii) as promptly as reasonably practicable, prepare
and file any amendments or supplements necessary to be filed in response to any SEC comments or as
otherwise required by

38

 

applicable laws, (iv) as promptly as reasonably practicable, distribute or otherwise make
available to its shareholders, in accordance with applicable law and the rules of the SEC, the
Proxy Statement and, as determined by the Company, all other customary proxy or other materials for
meetings such as the Shareholders Meeting, (v) to the extent required by applicable laws or rules
of the SEC, as promptly as reasonably practicable prepare, file and distribute (or otherwise make
available) to its shareholders, in accordance with applicable law and the rules of the SEC, any
supplement or amendment to the Proxy Statement if any event shall occur which requires such action
at any time prior to the Shareholders Meeting, and (vi) otherwise comply in all material respects
with all requirements of law and rules of the SEC applicable to any Shareholders Meeting. Each
Participating Investor shall cooperate with the Company in connection with the preparation of the
Proxy Statement and any amendments or supplements thereto, including promptly furnishing the
Company, upon request, with any and all information as may be required to be set forth in the Proxy
Statement under applicable laws or rules of the SEC. The Company will provide to Counsel, at least
one Business Day prior to filing with the SEC, the Proxy Statement, or any amendments or
supplements thereto, and shall give reasonable consideration to any comments proposed by Counsel
prior to distributing (or otherwise making available) the Proxy Statement to its shareholders. The
Proxy Statement shall include the recommendation of the Board of Directors to approve the Proposal,
unless the Board of Directors determines in good faith (after consultation with outside legal
counsel) that, as a result of an Intervening Event, the making of such recommendation by the Board
of Directors would constitute a breach of the Board of Directors’ fiduciary duties to the Company’s
shareholders under applicable law.

          (c) If, at any time prior to a Shareholders Meeting, any information relating to the Company
or any of the Participating Investors or any of their respective Affiliates should be discovered by
the Company or any of the Participating Investors which should be set forth in an amendment or
supplement to a Proxy Statement so that the Proxy Statement shall not contain any untrue statement
of a material fact or omit to state any material fact required to be stated therein or necessary in
order to make the statements therein, in light of the circumstances under which they are made, not
misleading, the party that discovers such information shall promptly notify the other parties and,
to the extent required by applicable law, the Company shall use its reasonable best efforts to
disseminate as promptly as reasonably practicable in an appropriate manner in accordance with
applicable law and the rules of the SEC an appropriate amendment thereof or supplement thereto
describing such information to its shareholders.

          (d) The Company hereby represents, warrants, covenants and agrees that none of the information
included or incorporated by reference in a Proxy Statement shall, at the date it is first
distributed or otherwise made available to shareholders or at the time of the applicable
Shareholders Meeting or at the time of any amendment or supplement thereof, contain any untrue
statement of a material fact or omit to state any material fact required to be stated therein or
necessary in order to make the statements therein, in light of the circumstances under which they
are made, not misleading, except that no such representation is made by the Company with respect to
statements made or incorporated by reference therein in reliance on, and in conformity with,
information supplied in writing by or on behalf of the Participating Investors in connection with
the preparation of the Proxy Statement or any supplement or amendment thereto expressly for
inclusion therein. The Proxy Statement or any supplement or amendment thereto that is filed

39

 

by the Company shall comply as to form in all material respects with the requirements of the
Exchange Act.

          (e) The Company’s obligations under this Section 4.15 shall not apply following any
date on which the rules of the NYSE Amex or any other U.S. national or regional exchange on which
the Common Stock is listed, or the staff interpretations thereof, are changed such that no approval
of the Company’s shareholders is required for the Proposal under such rules, provided that the
Company has received, and delivered, or caused to be delivered, to each of the Holders, a written
opinion of outside counsel to the Company to such effect. On and after such date, the limitations
imposed by Section 10.04(b) shall no longer apply, and Section 10.04(b) shall be void and of no
force or effect.

ARTICLE 5

Successor Corporation

     Section 5.01. When Company May Merge Or Transfer Assets. The Company shall not consolidate
with, merge with or convert into any other Person or convey, transfer or lease all or substantially
all of its properties and assets to any Person, unless:

          (a) either (1) the Company shall be the continuing Person or (2) the Person (if other than the
Company) formed by such consolidation or into which the Company is merged or the Person which
acquires by conveyance, transfer or lease all or substantially all of the properties and assets of
the Company (the “Surviving Entity”) (i) shall be a Person (other than an individual) organized and
validly existing under the laws of the United States or any State thereof or the District of
Columbia and (ii) shall expressly assume, by an indenture supplemental hereto, executed and
delivered to the Trustee, in form satisfactory to the Trustee, all of the obligations of the
Company under the Notes and this Indenture;

          (b) at the time of such transaction (and immediately after giving effect thereto), no Event of
Default and no event which, after notice or lapse of time, would become an Event of Default, shall
have happened and be continuing;

          (c) each Guarantor (unless it is the Surviving Entity, in which case clause (b) shall apply)
shall have, by an indenture supplemental hereto, executed and delivered to the Trustee, in form
satisfactory to the Trustee, confirmed that its Guarantee shall apply to the Surviving Entity’s
obligations under the Notes and this Indenture; and

          (d) the Company shall have delivered to the Trustee an Officers’ Certificate and an Opinion of
Counsel, each stating that such consolidation, merger, conveyance, transfer or lease and, if a
supplemental indenture is required in connection with such transaction, such supplemental
indenture, comply with this Article 5 and that all conditions precedent herein provided for
relating to such transaction have been satisfied.

     For purposes of the foregoing, the transfer (by lease, assignment, sale or otherwise) of the
properties and assets of one or more Subsidiaries (other than to the Company or another
Subsidiary), which, if such assets were owned by the Company, would constitute all or substantially
all of the properties and assets of the Company, shall be deemed to be the transfer of all or
substantially all of the properties and assets of the Company.

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     The Surviving Entity shall succeed to, and be substituted for, and may exercise every right
and power of, the Company under this Indenture with the same effect as if such Surviving Entity had
been named as the Company herein; and thereafter, except in the case of a lease and obligations the
Company may have under a supplemental indenture pursuant to Section 10.14, the Company shall be
discharged from all obligations and covenants under this Indenture and the Notes. Subject to
Section 9.06, the Company, the Trustee and the Surviving Entity shall enter into a supplemental
indenture to evidence the succession and substitution of such Surviving Entity and such discharge
and release of the Company.

ARTICLE 6

Defaults And Remedies

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

          (a) the Company fails to pay (in cash or, if applicable, shares of Preferred Stock) when due
the principal of or premium (including any Make-Whole Premium or Conversion Make-Whole Payment), if
any, on any of the Notes at maturity, upon exercise of a repurchase right or otherwise, or the
Company fails to pay when due any cash payment required pursuant to Article 10;

          (b) the Company fails to pay an installment of interest on any of the Notes that continues for
30 days after the date when due;

          (c) the Company fails to issue and deliver (or cause to be issued and delivered) shares of
Conversion Stock, together with cash in lieu of fractional shares, when such Conversion Stock or
cash in lieu of fractional shares is required to be delivered upon conversion of a Note (including
pursuant to the Automatic Conversion, if any) and such failure continues for 10 days after the
required delivery date;

          (d) the Company fails to give notice regarding a Change of Control within the time period
specified in Section 3.02(c);

          (e) the Company fails to comply with any of its obligations under Section 4.02(a) within
thirty (30) days after the date specified for the applicable action therein;

          (f) the Company fails to perform or observe any other term, covenant or agreement contained in
the Notes or this Indenture for a period of 60 days after receipt by the Company of a Notice of
Default (as defined below);

          (g) (i) the Company or any Significant Subsidiary fails to make any payment by the end of the
applicable grace period, if any, after the final scheduled payment date for such payment with
respect to any indebtedness for borrowed money in an aggregate amount in excess of $5 million or
(ii) indebtedness for borrowed money of the Company or any Significant Subsidiary in an aggregate
amount in excess of $5 million shall have been accelerated or otherwise declared due and payable,
or required to be prepaid or repurchased (other than by regularly scheduled required prepayment)
prior to the scheduled maturity thereof as a result of a default with respect to such indebtedness,
in either case without such indebtedness referred to in

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subclause (i) or (ii) of this clause (g) having been discharged, cured, waived, rescinded or
annulled, for a period of 30 days after receipt by the Company of a Notice of Default;

          (h) the Company, or any Significant Subsidiary, or any Subsidiaries of the Company which in
the aggregate would constitute a Significant Subsidiary pursuant to or under or within the meaning
of any Bankruptcy Law:

               (i) commences a voluntary case or proceeding;

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

               (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;

               (v) files a petition in bankruptcy or answer or consent seeking reorganization or relief; or

               (vi) consents to the filing of such a petition or the appointment of or taking possession by a
Custodian; and

          (i) 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 or any Subsidiaries of the
Company which in the aggregate would constitute a Significant Subsidiary in an involuntary case or
proceeding, or adjudicates the Company or any Significant Subsidiary or any Subsidiaries of the
Company which in the aggregate would constitute a Significant Subsidiary insolvent or bankrupt; or

               (ii) appoints a Custodian of the Company or any Significant Subsidiary or any Subsidiaries of
the Company which in the aggregate would constitute a Significant Subsidiary or for any substantial
part of its or their properties; or

               (iii) orders the winding up or liquidation of the Company or any Significant Subsidiary or any
Subsidiaries of the Company which in the aggregate would constitute a Significant Subsidiary; or

               (iv) the order or decree remains unstayed and in effect for 60 days; and

          (j) any default occurs under any Permitted Subordinated Indebtedness in excess of $2,000,000
individually or in the aggregate.

     For purposes of Sections 6.01(h) and 6.01(i) above:

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     “Bankruptcy Law” means Title 11, United States Code, or any similar federal or state law for
the relief of debtors.

     “Custodian” means any receiver, trustee, assignee, liquidator, custodian or similar official
under any Bankruptcy Law.

     A Default under clause (f) or (g) above is not an Event of Default until the Trustee notifies
the Company, or the Holders of at least 25% in aggregate principal amount of the Notes at the time
outstanding notify the Company and the Trustee, of the Default and the Company does not cure such
Default (and such Default is not waived) within the time specified in clause (f) or (g) above after
actual receipt of such notice. Any 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, within five Business Days of becoming aware of the
occurrence of an Event of Default, written notice thereof. In addition, the Company shall deliver
to the Trustee, within 30 days after they become aware of the occurrence thereof, written notice of
any event which with the lapse of time would become an Event of Default under clause (f) above, 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(h) or 6.01(i)) occurs and is continuing, the Trustee by notice to the Company, or
the Holders of at least 25% in aggregate principal amount of the Notes at the time outstanding by
notice to the Company and the Trustee, may declare the Notes due and payable at their principal
amount together with accrued interest. Upon a declaration of acceleration, such principal and
accrued and unpaid interest to the date of payment shall be immediately due and payable. If an
Event of Default is cured prior to any such declaration by the Trustee or the Holders, the Trustee
and the Holders shall not be entitled to declare the Notes due and payable as provided herein as a
result of such cured Event of Default and any such cured Event of Default shall be deemed waived by
the Holders and the Trustee.

     If an Event of Default specified in Sections 6.01(h) or 6.01(i) above occurs and is
continuing, then the principal and the accrued interest on all the Notes shall become and be
immediately due and payable without any declaration or other act on the part of the Trustee or any
Noteholders.

     The Holders of a majority in aggregate principal amount of the Notes at the time outstanding,
by written notice to the Trustee (and without notice to any other Noteholder) may rescind or annul
an acceleration and its consequences if the rescission would not conflict with any judgment or
decree and if all existing Events of Default have been cured or waived except nonpayment of the
principal and any accrued cash interest that have become due solely as a result of acceleration and
if all amounts due to the Trustee under Section 7.06 have been paid. No such rescission shall
affect any subsequent Default or impair any right consequent thereto.

     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 the principal, the premium (including any
Make-Whole Premium or Conversion Make-Whole Payment), if any, any

43

 

payment required pursuant to Article 10, and any accrued cash interest on the Notes or to
enforce the performance of any provision of the Notes, this Indenture or the Guaranty.

     The Trustee may maintain a proceeding even if the Trustee does not possess any of the Notes or
produce any of the Notes in the proceeding. A delay or omission by the Trustee or any Noteholder
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 aggregate principal
amount of the Notes at the time outstanding, by written notice to the Trustee (and without notice
to any other Noteholder), may waive an existing Event of Default and its consequences except (1) an
Event of Default described in Section 6.01(a) or 6.01(b), (2) an Event of Default in respect of a
provision that under Section 9.02 cannot be amended without the consent of each Noteholder affected
or (3) an Event of Default which constitutes a failure to convert any Note in accordance with the
terms of Article 10 (including pursuant to the Automatic Conversion, if any). 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 Holders of a majority in aggregate principal amount of
the Notes at the time outstanding 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 that the Trustee determines in good faith is prejudicial to the rights of other
Noteholders or would involve the Trustee in personal liability unless the Trustee is offered
indemnity satisfactory to it against loss, liability or expense.

     Section 6.06. Limitation On Suits. A Noteholder may not pursue any remedy with respect to
this Indenture, the Notes or the Guaranty unless:

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

     (2) the Holders of at least 25% in aggregate principal amount of the Notes at the time
outstanding make a written request to the Trustee to pursue the remedy;

     (3) such Holder or Holders offer to the Trustee indemnity satisfactory to the Trustee
against any loss, liability or expense;

     (4) the Trustee does not comply with the request within 60 days after receipt of such
notice, request and offer of security or indemnity; and

     (5) the Holders of a majority in aggregate principal amount of the Notes at the time
outstanding do not give the Trustee a direction inconsistent with the request during such
60-day period.

     A Noteholder may not use this Indenture to prejudice the rights of any other Noteholder or to
obtain a preference or priority over any other Noteholder.

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     Section 6.07. Rights of Holders to Receive Payment. Notwithstanding any other provision of
this Indenture, the right of any Holder to receive payment of the principal amount, premium, if
any, Change of Control Purchase Price, the Make-Whole Premium, Conversion Make-Whole Payment or
payment under Article 10, if applicable, or any accrued cash interest in respect of the Notes held
by such Holder, on or after the respective due dates expressed herein or in the Notes or any Change
of Control Purchase Date, and to convert the Notes in accordance with Article 10, or to bring suit
for the enforcement of any such payment on or after such respective dates or the right to convert,
shall not be impaired or affected adversely without the consent of such Holder.

     Section 6.08. Collection Suit by Trustee. If an Event of Default described 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 owing with respect to the
Notes and the amounts provided for in Section 7.06.

     Section 6.09. Trustee May File Proofs of Claim. In case of the pendency of any receivership,
insolvency, liquidation, bankruptcy, reorganization, arrangement, adjustment, composition or other
judicial proceeding relative to the Company or any other obligor upon the Notes or the property of
the Company or of such other obligor or their creditors, the Trustee (irrespective of whether the
principal amount, Change of Control Purchase Price, any applicable Make-Whole Premium or Conversion
Make-Whole Payment or any accrued cash interest in respect of the Notes shall then be due and
payable as herein or therein expressed or by declaration or otherwise and irrespective of whether
the Trustee shall have made any demand on the Company for the payment of any such amount) shall be
entitled and empowered, by intervention in such proceeding or otherwise,

          (a) to file and prove a claim for the whole amount of the principal amount, Change of Control
Purchase Price, any applicable Make-Whole Premium or Conversion Make-Whole Payment or any accrued
cash interest and to file such other papers or documents as may be necessary or advisable in order
to have the claims of the Trustee (including any claim for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel or any other amounts due the
Trustee under Section 7.06) and of the Holders allowed in such judicial proceeding, and

          (b) to collect and receive any moneys or other property payable or deliverable on any such
claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or similar official in any
such judicial proceeding is hereby authorized by each Holder to make such payments to the Trustee
and, in the event that the Trustee shall consent to the making of such payments directly to the
Holders, to pay the Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the
Trustee under Section 7.06.

     Nothing herein contained shall be deemed to authorize the Trustee to authorize or consent to
or accept or adopt on behalf of any Holder any plan of reorganization, arrangement,

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adjustment or composition affecting the Notes or the rights of any Holder thereof, or to
authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding.

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

     (1) to the Trustee for amounts due under Section 7.06;

     (2) to Noteholders for amounts due and unpaid on the Notes for the principal amount,
Change of Control Purchase Price, any applicable Make-Whole Premium or Conversion Make-Whole
Payment or any accrued cash interest as the case may be, ratably, without preference or
priority of any kind, according to such amounts due and payable on the Notes; and

     (3) the balance, if any, to the Company.

     The Trustee may fix a record date and payment date for any payment to Noteholders pursuant to
this Section 6.10. At least 15 days before such record date, the Trustee shall mail to each
Noteholder and the Company a notice that states the record date, the payment date and the 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 the Guaranty 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
(other than the Trustee) in the suit of an undertaking to pay the costs of the suit in the manner
and to the extent provided in the TIA, and the court in its discretion may assess reasonable costs,
including reasonable attorneys’ fees and expenses, 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 6.11 does not apply to a suit by the Trustee, a suit by a Holder pursuant to Section 6.07
or a suit by Holders of more than 10% in aggregate principal amount of the Notes at the time
outstanding.

     Section 6.12. Waiver Of Stay, Extension Or Usury Laws. The Company covenants (to the extent
that it may lawfully do so) that it will not at any time insist upon, or plead, or in any manner
whatsoever claim or take the benefit or advantage of, any stay or extension law or any usury or
other law wherever enacted, now or at any time hereafter in force, which would prohibit or forgive
the Company from paying all or any portion of the principal amount, Change of Control Purchase
Price, any applicable Make-Whole Premium or Conversion Make-Whole Payment or any accrued cash
interest in respect of Notes, or any interest on such amounts, as contemplated herein, or 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 covenants
that it will not hinder, delay or impede the execution of any power herein granted to the Trustee,
but will suffer and permit the execution of every such power as though no such law had been
enacted.

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ARTICLE 7

Trustee

     Section 7.01. Duties And Responsibilities Of The Trustee; During Default; Prior To Default.
The Trustee, prior to the occurrence of an Event of Default hereunder and after the curing or
waiving of all such Events of Default which may have occurred, undertakes to perform such duties
and only such duties as are specifically set forth in this Indenture. In case an Event of Default
hereunder has occurred (which has not been cured or waived), the Trustee shall exercise such of the
rights and powers vested in it by this Indenture, and use the same degree of care and skill in
their exercise, as a reasonable person would exercise or use under the circumstances in the conduct
of his own affairs.

     No provision of this Indenture shall be construed to relieve the Trustee from liability for
its own negligent action, its own negligent failure to act or its own willful misconduct, except
that

          (a) prior to the occurrence of an Event of Default hereunder and after the curing or waiving
of all such Events of Default which may have occurred:

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

               (ii) in the absence of bad faith on the part of the Trustee, the Trustee may conclusively
rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon
any statements, certificates or opinions furnished to the Trustee and conforming to the
requirements of this Indenture; but in the case of any such statements, certificates or opinions
which by any provision hereof are specifically required to be furnished to the Trustee, the Trustee
shall be under a duty to examine the same to determine whether or not they conform to the
requirements of this Indenture;

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

          (c) the Trustee shall not be liable with respect to any action taken or omitted to be taken by
it in good faith in accordance with the direction of the Holders pursuant to Section 6.05 relating
to the time, method and place of conducting any proceeding for any remedy available to the Trustee,
or exercising any trust or power conferred upon the Trustee, under this Indenture.

     None of the provisions contained in this Indenture shall require the Trustee to expend or risk
its own funds or otherwise incur personal financial liability in the performance of any of its
duties or in the exercise of any of its rights or powers.

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     Section 7.02. Certain Rights of the Trustee. Subject to Section 7.01:

          (a) the Trustee may conclusively rely and shall be fully protected in acting or refraining
from acting upon any resolution, Officers’ Certificate or any other certificate, statement,
instrument, opinion, report, notice, request, consent, order, bond, debenture, note, coupon, Note
or other paper or document (whether in its original or facsimile form) believed by it to be genuine
and to have been signed or presented by the proper party or parties;

          (b) any request, direction, order or demand of the Company mentioned herein shall be
sufficiently evidenced by an Officers’ Certificate (unless other evidence in respect thereof be
herein specifically prescribed); and any resolution of the Board of Directors may be evidenced to
the Trustee by a copy thereof certified by the secretary or an assistant secretary of the Company;

          (c) the Trustee may consult with counsel of its selection and any advice or Opinion of Counsel
shall be full and complete authorization and protection in respect of any action taken, suffered or
omitted to be taken by it hereunder in good faith and in accordance with such advice or Opinion of
Counsel;

          (d) the Trustee shall be under no obligation to exercise any of the trusts or powers vested in
it by this Indenture with the request, order or direction of any of the Noteholders pursuant to the
provisions of this Indenture, unless such Noteholders shall have offered to the Trustee reasonable
security or indemnity satisfactory to it against the costs, expenses and liabilities which might be
incurred therein or thereby;

          (e) the Trustee shall not be liable for any action taken or omitted by it in good faith and
believed by it to be authorized or within the discretion, rights or powers conferred upon it by
this Indenture;

          (f) prior to the occurrence of an Event of Default hereunder and after the curing or waiving
of all such Events of Default, 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, appraisal, bond, debenture, note, coupon, security, or
other paper or document unless requested in writing to do so by the Holders of not less than a
majority in aggregate principal amount of the Notes then outstanding; provided that, if the payment
within a reasonable time to the Trustee of the costs, expenses or liabilities likely to be incurred
by it in the making of such investigation is, in the opinion of the Trustee, not reasonably assured
to the Trustee by the security afforded to it by the terms of this Indenture, the Trustee may
require reasonable indemnity against such expenses or liabilities as a condition to proceeding; the
reasonable expenses of every such investigation shall be paid by the Company or, if paid by the
Trustee or any predecessor trustee, shall be repaid by the Company upon demand;

          (g) the Trustee may execute any of the trusts or powers hereunder or perform any duties
hereunder either directly or by or through agents or attorneys not regularly in its employ and the
Trustee shall not be responsible for any misconduct or negligence on the part of any such agent or
attorney appointed with due care by it hereunder;

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          (h) the Trustee shall not be required to take notice or be deemed to have notice of any Event
of Default, except failure of the Company to cause to be made any of the payments required to be
made to the Trustee, unless the Trustee shall be specifically notified by a writing of such default
by the Company or by the Holders of at least 25% aggregate principal amount of the Notes then
outstanding delivered to the Corporate Trust Office of the Trustee and, in the absence of such
notice so delivered the Trustee may conclusively assume no default exists;

          (i) the rights, privileges, protections, immunities and benefits given to the Trustee,
including, without limitation, its right to be indemnified, are extended to, and shall be
enforceable by, the Trustee in each of its capacities hereunder, and each agent, custodian and
other Person employed to act hereunder;

          (j) before taking any action or refraining from taking any action under this Indenture, the
Trustee may require that indemnity satisfactory to it be furnished for the reimbursement of all
expenses to which it may be put and to protect it against all liability, including costs incurred
in defending itself against any and all charges, claims, complaints, allegations, assertions or
demands of any nature whatsoever, except liability which is adjudicated to be a result of the
Trustee’s negligence or willful misconduct in connection with any such action; and

          (k) whether or not therein expressly so provided, every provision of this Indenture relating
to the conduct of, or affecting the liability of, or affording protection to the Trustee shall be
subject to the provisions of this Section 7.02.

     Section 7.03. Trustee not Responsible for Recitals, Dispositions of Notes or Application of
Proceeds Thereof. The recitals contained herein and in the Notes, except the Trustee’s
certificates of authentication, shall be taken as the statements of the Company, and the Trustee
assumes no responsibility for the correctness of the same. The Trustee makes no representation as
to the validity or sufficiency of this Indenture or of the Notes. The Trustee shall not be
accountable for the use or application by the Company of any of the Notes or of the proceeds
thereof.

     Section 7.04. Trustee and Agents May Hold Notes; Collections, Etc. The Trustee or any agent
of the Company or the Trustee, in its individual or any other capacity, may become the owner or
pledgee of Notes with the same rights it would have if it were not the Trustee or such agent and,
subject to Sections 7.08 and 7.13, if operative, may otherwise deal with the Company and receive,
collect, hold and retain collections from the Company with the same rights it would have if it were
not the Trustee or such agent.

     Section 7.05. Moneys Held by Trustee. Subject to the provisions of Section 8.03 hereof, all
moneys received by the Trustee shall, until used or applied as herein provided, be held in trust
for the purposes for which they were received, but need not be segregated from other funds except
to the extent required by mandatory provisions of law. Neither the Trustee nor any agent of the
Company or the Trustee shall be under any liability for interest on any moneys received by it
hereunder. Under no circumstances shall the Trustee be liable in its individual capacity for the
obligations evidenced by the Notes. In accepting the trust hereby created, the Trustee acts solely
as Trustee for the Holders of the Notes and not in its individual capacity and all persons,

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including without limitation the Holders of Notes and the Company having any claim against the
Trustee arising from this Indenture shall look only to the funds and accounts held by the Trustee
hereunder for payment except as otherwise provided herein.

     Section 7.06. Compensation and Indemnification of Trustee and Its Prior Claim. The Company
covenants and agrees to pay to the Trustee from time to time, and the Trustee shall be entitled to,
such compensation (which shall not be limited by any provision of law in regard to the compensation
of a trustee of an express trust) to be agreed to in writing by the Trustee and the Company, and
the Company covenants and agrees to pay or reimburse the Trustee and each predecessor Trustee upon
its request for all expenses, disbursements and advances incurred or made by or on behalf of it in
accordance with any of the provisions of this Indenture (including (i) the reasonable compensation
and the expenses and disbursements of its counsel and of all agents and other persons not regularly
in its employ and (ii) interest at the prime rate on any disbursements and advances made by the
Trustee and not paid by the Company within 5 days after receipt of an invoice for such disbursement
or advance) except any such expense, disbursement or advance as shall be determined by a court of
competent jurisdiction to have been caused by its own negligence or bad faith. The Company also
covenants to fully indemnify each of the Trustee, each predecessor Trustee, any Authenticating
Agent and any officer, director, employee or agent of the Trustee, each such predecessor Trustee or
any such Authenticating Agent for, and to hold it harmless against, any and all loss, liability,
claim, damage or expense (including legal fees and expenses) incurred without negligence or willful
misconduct on its part, arising out of or in connection with the acceptance or administration of
this Indenture or the trusts hereunder and its duties hereunder, including the costs and expenses
of defending itself against or investigating any claim of liability in the premises. The
obligations of the Company under this Section 7.06 to compensate and indemnify the Trustee, each
predecessor Trustee, any Authenticating Agent and any officer, director, employee or agent of the
Trustee, each such predecessor Trustee or any such Authenticating Agent and to pay or reimburse the
Trustee and each predecessor Trustee for expenses, disbursements and advances shall constitute
additional indebtedness hereunder and shall survive the satisfaction and discharge of this
Indenture. Such additional indebtedness shall be a senior claim to that of the Notes upon all
property and funds held or collected by the Trustee as such, except funds held in trust for the
benefit of the Holders of particular Notes, and the Notes are hereby effectively subordinated to
such senior claim to such extent. The provisions of this Section 7.06 shall survive the
termination of this Indenture and the resignation or removal of the Trustee. The Trustee’s fees
and expenses are intended to constitute an “Administrative Expense” under the Bankruptcy Law.

     No provision of this Indenture shall require the Trustee to expend or risk its own funds or
otherwise incur any financial liability in the performance of any of its duties hereunder, or in
the exercise of any of its rights or powers, if repayment of such funds or adequate indemnity
against such risk or liability is not assured to its satisfaction.

     Section 7.07. Right of Trustee to Rely on Officers’ Certificate, Etc. Subject to Sections
7.01 and 7.02, whenever in the administration of the trusts of this Indenture the Trustee shall
deem it necessary or desirable that a matter be proved or established prior to taking or suffering
or omitting any action hereunder, such matter (unless other evidence in respect thereof be herein
specifically prescribed) may, in the absence of bad faith on the part of the Trustee, be deemed to
be conclusively proved and established by an Officers’ Certificate delivered to the Trustee, and

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such certificate, in the absence of bad faith on the part of the Trustee, shall be full
warrant to the Trustee for any action taken, suffered or omitted by it under the provisions of this
Indenture.

     Section 7.08. Conflicting Interests. If the Trustee has or shall acquire a conflicting
interest within the meaning of the TIA, the Trustee shall either eliminate such interest or resign,
to the extent and in the manner provided by, and subject to the provisions of, the TIA.

     Section 7.09. Persons Eligible for Appointment as Trustee. The Trustee shall at all times be
a corporation or banking association having a combined capital and surplus of at least $50,000,000.
If such corporation or banking association publishes reports of condition at least annually,
pursuant to law or to the requirements of the aforesaid supervising or examining authority, then,
for the purposes of this Section 7.09, the combined capital and surplus of such corporation shall
be deemed to be its combined capital and surplus as set forth in its most recent report of
condition so published. In case at any time the Trustee shall cease to be eligible in accordance
with the provisions of this Section 7.09, the Trustee shall resign immediately in the manner and
with the effect specified in Section 7.10.

     Section 7.10. Resignation and Removal; Appointment of Successor Trustee. (a) The Trustee, or
any trustee or trustees hereafter appointed, may at any time resign with respect to one or more or
all series of Notes by giving written notice of resignation to the Company and by mailing notice
thereof by first class mail to the Holders of Notes at their last addresses as they shall appear on
the Note Register. Upon receiving such notice of resignation, the Company shall promptly appoint a
successor trustee or trustees by written instrument in duplicate, executed by authority of the
Board of Directors, one copy of which instrument shall be delivered to the resigning Trustee and
one copy to the successor trustee or trustees. If no successor trustee shall have been so
appointed and have accepted appointment within 30 days after the mailing of such notice of
resignation, the resigning trustee may petition, at the expense of the Company, any court of
competent jurisdiction for the appointment of a successor trustee, or any Noteholder who has been a
bona fide Holder of a Note for at least six months may, subject to the provisions of Section 7.11,
on behalf of himself and all others similarly situated, petition any such court for the appointment
of a successor trustee. Such court may thereupon, after such notice, if any, as it may deem proper
and prescribe, appoint a successor trustee.

          (b) In case at any time any of the following shall occur:

               (i) the Trustee shall fail to comply with the provisions of Section 7.08 with respect to any
Notes after written request therefor by the Company or by any Noteholder who has been a bona fide
Holder of a Note for at least six months; or

               (ii) the Trustee shall cease to be eligible in accordance with the provisions of Section 7.09
and shall fail to resign after written request therefor by the Company or by any Noteholder; or

               (iii) the Trustee shall become incapable of acting or shall be adjudged a bankrupt or
insolvent, or a receiver or liquidator of the Trustee or of its property shall be appointed, or any
public officer shall take charge or control of the Trustee or of its property or affairs for the
purpose of rehabilitation, conservation or liquidation; or

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               (iv) the Company shall determine that the Trustee has failed to perform its obligations under
this Indenture in any material respect;

then, in any such case, the Company may remove the Trustee and appoint a successor trustee by
written instrument, in duplicate, executed by order of the Board of Directors, one copy of which
instrument shall be delivered to the Trustee so removed and one copy to the successor trustee, or,
subject to the provisions of Section 7.11, any Noteholder who has been a bona fide Holder of a Note
for at least six months may on behalf of himself and all others similarly situated, petition any
court of competent jurisdiction for the removal of the Trustee and the appointment of a successor
trustee. Such court may thereupon, after such notice, if any, as it may deem proper and prescribe,
remove the Trustee and appoint a successor trustee. If no successor trustee shall have been
appointed and have accepted appointment within 30 days after a notice of removal has been given,
the removed trustee may petition a court of competent jurisdiction for the appointment of a
successor trustee.

          (c) The Holders of a majority in aggregate principal amount of the Notes at the time
outstanding may at any time remove the Trustee and appoint a successor trustee by delivering to the
Trustee so removed, to the successor trustee so appointed and to the Company the evidence provided
for in Section 1.05 of the action in that regard taken by the Noteholders.

          (d) Any resignation or removal of the Trustee and any appointment of a successor trustee
pursuant to any of the provisions of this Section 7.10 shall become effective upon acceptance of
appointment by the successor trustee as provided in Section 7.11.

     Section 7.11. Acceptance of Appointment by Successor Trustee. Any successor trustee appointed
as provided in Section 7.10 shall execute and deliver to the Company and to the predecessor trustee
an instrument accepting such appointment hereunder, and thereupon the resignation or removal of the
predecessor trustee shall become effective and such successor trustee, without any further act,
deed or conveyance, shall become vested with all rights, powers, duties and obligations of its
predecessor hereunder, with like effect as if originally named as trustee hereunder; but,
nevertheless, on the written request of the Company or of the successor trustee, upon payment of
its charges then unpaid, the trustee ceasing to act shall pay over to the successor trustee all
moneys at the time held by it hereunder and shall execute and deliver an instrument transferring to
such successor trustee all such rights, powers, duties and obligations. Upon request of any such
successor trustee, the Company shall execute any and all instruments in writing for more fully and
certainly vesting in and confirming to such successor trustee all such rights and powers. Any
trustee ceasing to act shall, nevertheless, retain a prior claim upon all property or funds held or
collected by such trustee to secure any amounts then due it pursuant to the provisions of Section
7.06.

     No successor trustee shall accept appointment as provided in this Section 7.11 unless at the
time of such acceptance such successor trustee shall be qualified under the provisions of Section
7.08 and eligible under the provisions of Section 7.09.

     Upon acceptance of appointment by any successor trustee as provided in this Section 7.11, the
Company shall mail notice thereof by first class mail to the Holders of Notes at their last
addresses as they shall appear in the Note Register. If the acceptance of appointment is

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substantially contemporaneous with the resignation, then the notice called for by the
preceding sentence may be combined with the notice called for by Section 7.10. If the Company
fails to mail such notice within ten days after acceptance of appointment by the successor trustee,
the successor trustee shall cause such notice to be mailed at the expense of the Company.

     Section 7.12. Merger, Conversion, Consolidation or Succession to Business of Trustee. Any
corporation or banking association into which the Trustee may be merged or converted or with which
it may be consolidated, or any corporation or banking association resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any corporation or banking
association succeeding to all or substantially all of the corporate trust business of the Trustee,
shall be the successor of the Trustee hereunder; provided that such corporation or banking
association shall be qualified under the provisions of Section 7.08 and eligible under the
provisions of Section 7.09, without the execution or filing of any paper or any further act on the
part of any of the parties hereto, anything herein to the contrary notwithstanding. In case at the
time such successor to the Trustee shall succeed to the trusts created by this Indenture any of the
Notes shall have been authenticated but not delivered, any such successor to the Trustee may adopt
the certificate of authentication of any predecessor Trustee or Authenticating Agent and deliver
such Notes so authenticated; and, in case at that time any of the Notes shall not have been
authenticated, any successor to the Trustee or any Authenticating Agent appointed by such successor
Trustee may authenticate such Notes either in the name of any predecessor hereunder or in the name
of the successor Trustee; and in all such cases such certificate shall have the full force and
effect that this Indenture provides for the certificate of authentication of the Trustee; provided
that the right to adopt the certificate of authentication of any predecessor Trustee or to
authenticate Notes in the name of any predecessor Trustee shall apply only to its successor or
successors by merger, conversion or consolidation.

     Section 7.13. Preferential Collection of Claims Against the Company. If and when the Trustee
shall be or become a creditor of the Company (or any other obligor upon the Notes), the Trustee
shall be subject to the provisions of the TIA regarding the collection of the claims against the
Company (or any such other obligor).

     Section 7.14. Reports By The Trustee. (a) Within sixty (60) days after May 15 of each year
commencing with the year 2010, the Trustee shall transmit to Holders and other persons such reports
dated as of May 15 of the year in which such reports are made concerning the Trustee and its
actions under this Indenture as may be required pursuant to the TIA.

          (b) A copy of each such report shall, at the time of such transmission to Noteholders, be
furnished to the Company and be filed by the Trustee with each stock exchange upon which the Notes
are listed and also with the SEC. The Company agrees to notify the Trustee when and as the Notes
become admitted to trading on any national securities exchange or become delisted therefrom.

     Section 7.15. Trustee to Give Notice of Default, But May Withhold in Certain Circumstances.
The Trustee shall transmit to the Noteholders, as the names and addresses of such Holders appear on
the Note Register, notice by mail of all Defaults which have occurred, such notice to be
transmitted within 90 days after the occurrence thereof, unless such defaults shall have been cured
before the giving of such notice; provided that, except in the case of

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Default in the payment of the principal of, premium (including any Make-Whole Premium or any
Conversion Make-Whole Payment), if any, or interest on any of the Notes when due or in the payment
of any repurchase obligation (including any payment under Article 10 hereof), the Trustee shall be
protected in withholding such notice if and so long as the board of directors, the executive
committee, or a trust committee of directors or trustees and/or Responsible Officers of the Trustee
in good faith determines that the withholding of such notice is in the best interests of the
Noteholders.

ARTICLE 8

DISCHARGE OF INDENTURE

     Section 8.01. Discharge Of Indenture. When all outstanding Notes will become due and payable
within one year of their Stated Maturity and the Company has deposited with the Trustee cash
sufficient to pay and discharge all outstanding Notes on the date of their Stated Maturity, then
the Company may discharge its obligations under this Indenture while Notes remain outstanding;
provided that provisions of Section 2.04, Section 2.05, Section 2.06, Section 2.07, Section 2.08,
Section 4.01, Section 4.05, Section 7.06, Article 10 and this Article 8 shall survive until the
Notes have been paid in full. The Trustee shall join in the execution of a document prepared by
the Company acknowledging satisfaction and discharge of this Indenture on demand of the Company
accompanied by an Officers’ Certificate and Opinion of Counsel as required by Section 11.04 and at
the cost and expense of the Company; the Company, however, hereby agrees to reimburse the Trustee
for any costs or expenses thereafter reasonably and properly incurred by the Trustee and to
compensate the Trustee for any services thereafter reasonably and properly rendered by the Trustee
in connection with this Indenture or the Notes. The Company will remain obligated to issue shares
of its Common Stock upon conversion of the Notes until such maturity as described under Article 10.

     Section 8.02. Paying Agent to Repay Monies Held. Upon the discharge of this Indenture, all
monies then held by any Paying Agent of the Notes (other than the Trustee) shall, upon written
request of the Company, be repaid to it or paid to the Trustee, and thereupon such Paying Agent
shall be released from all further liability with respect to such monies.

     Section 8.03. Return Of Unclaimed Monies. Subject to the requirements of applicable law, any
monies deposited with or paid to the Trustee or the Paying Agent for payment of the principal of,
premium, if any, or interest on Notes and not applied but remaining unclaimed by the Holders for
two years after the date upon which the principal of, premium, if any, or interest on such Notes,
as the case may be, shall have become due and payable, shall be repaid to the Company by the
Trustee or the Paying Agent on written demand and all liability of the Trustee or the Paying Agent
shall thereupon cease with respect to such monies; and the Holders shall thereafter look only to
the Company for any payment that such Holder may be entitled to collect unless an applicable
abandoned property law designates another Person.

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ARTICLE 9

SUPPLEMENTAL INDENTURES

     Section 9.01. Without Consent Of Holders. The Company and the Trustee may, from time to time
and at any time, enter into an indenture or indentures supplemental hereto without the consent of
any Noteholder for one or more of the following purposes:

          (a) adding to the Company’s covenants for the benefit of the Holders;

          (b) surrendering any right or power conferred upon the Company, including, without limitation,
the right to pay the Purchase Price upon a Change of Control and/or Make-Whole Premium or the
Conversion Make-Whole Payment in shares of Preferred Stock;

          (c) providing for the assumption of the Company’s obligations to the Holders in the case of a
merger, consolidation, conveyance, transfer or lease in accordance with Article 5;

          (d) increasing the Conversion Rate or reducing the Conversion Price; provided that the
increase or reduction will not adversely affect the interests of Holders in any material respect;

          (e) curing any ambiguity or correcting or supplementing any defective provision contained in
this Indenture; provided that such modification or amendment does not adversely affect the
interests of the Holders in any material respect;

          (f) adding or modifying any other provisions which the Company and the Trustee may deem
necessary or desirable and which will not adversely affect the interests of the Holders in any
material respect;

          (g) complying with the requirements regarding merger or transfer of assets; or

          (h) providing for uncertificated Notes in addition to the certificated Notes so long as such
uncertificated Notes are in registered form for purpose of the Internal Revenue Code of 1986.

     Section 9.02. With Consent Of Holders. With the written consent of the Holders of at least a
majority in aggregate principal amount of the Notes at the time outstanding, the Company and the
Trustee may, from time to time and at any time, enter into an indenture or indentures supplemental
hereto for the purpose of adding any provisions to or change in any manner or eliminating any of
the provisions of this Indenture or any supplemental indenture or of modifying in any manner the
rights of the Holders of the Notes or amending or otherwise modifying any provision of the
Guaranty. However, without the consent of each Noteholder so affected, a supplemental indenture or
amendment or other modification to the Guaranty may not:

          (a) change the maturity of the principal of or any installment of interest on any Note;

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          (b) reduce the principal amount of, or any premium (including any Make-Whole Premium or
Conversion Make-Whole Payment) or interest on, any Note, or any amount required to be paid pursuant
to Article 10;

          (c) change the currency of payment of such Note or interest thereon;

          (d) impair the right to institute suit for the enforcement of any payment on or with respect
to any Note;

          (e) modify the Company’s obligations to maintain an office or agency in New York City;

          (f) except as otherwise permitted or contemplated by provisions concerning corporate
reorganizations, adversely affect the repurchase option of Holders upon a Change of Control or the
conversion rights of Holders;

          (g) reduce the percentage in aggregate principal amount of Notes outstanding necessary to
modify or amend this Indenture or to waive any past default;

          (h) release any Subsidiary from its obligations under the Guaranty except as provided in the
Guaranty (which action shall be deemed to affect each Noteholder); or

          (i) amend or otherwise modify the terms of Section 10.04(a).

     It shall not be necessary for the consent of the Holders under this Section 9.02 to approve
the particular form of any proposed supplemental indenture or amendment or other modification to
the Guaranty, but it shall be sufficient if such consent approves the substance thereof.

     After a supplemental indenture or amendment or other modification to the Guaranty under this
Section 9.02 becomes effective, the Company shall mail to each Holder a notice briefly describing
the supplemental indenture or amendment or modification to the Guaranty.

     Section 9.03. Compliance with Trust Indenture Act. Every supplemental indenture executed
pursuant to this Article shall comply with the TIA; provided that this Section 9.03 shall not
require such supplemental indenture or the Trustee to be qualified under the TIA prior to the time
such qualification is in fact required under the terms of the TIA or the Indenture has been
qualified under the TIA, nor shall it constitute any admission or acknowledgment by any party to
such supplemental indenture that any such qualification is required prior to the time such
qualification is in fact required under the terms of the TIA or the Indenture has been qualified
under the TIA.

     Section 9.04. Revocation and Effect of Consents, Waivers and Actions. Until a supplemental
indenture, waiver or other action by Holders becomes effective, a consent thereto by a Holder of a
Note hereunder is a continuing consent by the Holder and every subsequent Holder of that Note or
portion of the Note that evidences the same obligation as the consenting Holder’s Note, even if
notation of the consent, waiver or action is not made on the Note. However, any such Holder or
subsequent Holder may revoke the consent, waiver or action as to such Holder’s Note or portion of
the Note if the Trustee receives the notice of revocation before

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the date the supplemental indenture, waiver or action becomes effective. After a supplemental
indenture, waiver or action becomes effective, it shall bind every Noteholder.

     Section 9.05. Notation on or Exchange of Notes. Notes authenticated and delivered after the
execution of any supplemental indenture pursuant to this Article may, and shall if required by the
Trustee, bear a notation in form approved by the Trustee as to any matter provided for in such
supplemental indenture. If the Company shall so determine, new Notes so modified as to conform, in
the opinion of the Trustee and the Board of Directors, to any such supplemental indenture may be
prepared and executed by the Company and authenticated and delivered by the Trustee or an
Authenticating Agent in exchange for outstanding Notes.

     Section 9.06. Trustee to Sign Supplemental Indentures. The Trustee shall sign any
supplemental indenture authorized pursuant to this Article 9 if the amendment contained therein
does not adversely affect the rights, duties, liabilities or immunities of the Trustee. If it
does, the Trustee may, but need not, sign such supplemental indenture. In signing such
supplemental indenture the Trustee shall be provided with, and 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.

     Section 9.07. Effect of Supplemental Indentures; Guaranty. Upon the execution of any
supplemental indenture under this Article, this Indenture shall be modified in accordance
therewith, and such supplemental indenture shall form a part of this Indenture for all purposes;
and every Holder of Notes theretofore or thereafter authenticated and delivered hereunder shall be
bound thereby. The foregoing provisions of Sections 9.03 through 9.07 shall apply to any amendment
or other modification of the Guaranty to the same extent as such provisions apply to a supplemental
indenture.

ARTICLE 10

CONVERSION

     Section 10.01. Conversion Right and Conversion Price. Subject to and upon compliance with the
provisions of this Article, at the option of the Holder thereof, any Note or any portion of the
principal amount thereof which is $1,000 or an integral multiple of $1,000 may be converted at the
principal amount thereof, or of such portion thereof, into duly authorized, fully paid and
nonassessable shares of Common Stock (or, at the election of such Holder, Preferred Stock), at the
Conversion Price, determined as hereinafter provided, in effect at the time of conversion;
provided, however, that (i) prior to the Full Conversion Date (and except as provided in clause
(ii) below to the extent the Company has exercised its right to redeem all or any part of the Notes
as provided in Article 3), if a Holder elects to receive Common Stock upon conversion of all or any
part of the Notes, such Holder may exercise its conversion right only to the extent that the
issuance of the number of shares of Common Stock issuable upon such conversion would not result in
a violation of Section 10.04(a) or Section 10.04(b) or, if a Holder elects to receive shares of
Preferred Stock upon conversion of all or any part of the Notes, such Holder may exercise its
conversion right only to the extent that the number of shares of Preferred Stock issuable upon such
conversion would be convertible as of the Conversion Date (as defined below) into a number of
shares of Common Stock that, if issued on the Conversion Date would not result in a violation of
Section 10.04(b) and (ii) (a) on or after the Full Conversion Date or

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(b) if the Company has exercised its right to redeem all or any part of the Notes as provided
in Article 3 (which shall be deemed to have occurred upon the Trustee’s delivery of a Redemption
Notice to each of the Holders pursuant to Section 3.02(a)), a Holder may exercise its conversion
right with respect to the full principal amount of Notes held by such Holder or subject to the
Redemption Notice, as applicable (subject to Section 10.04(a)); provided, further, that with
respect to the foregoing clause (ii), if Shareholder Approval has not been obtained as of the
Conversion Date, the Company will make a cash payment in lieu of any shares of Common Stock
otherwise deliverable to such Holder upon conversion in excess of the Exchange Cap (or, if such
Holder has elected to receive shares of Preferred Stock upon such conversion, in lieu of any shares
of Preferred Stock otherwise deliverable to such Holder upon conversion that would be convertible
into shares of Common Stock in excess of the Exchange Cap, without regard to any limitation set
forth in Section 6 of the Preferred C of D) (the “Excess Shares”) equal to the product of (1) the
number of the Excess Shares multiplied by (2) the average Closing Price per share of the Common
Stock over the ten Trading Day period ending on the Trading Day preceding the Conversion Date.
Such conversion right shall expire at the close of business on the Stated Maturity date of the
Notes.

     In the case of a Change of Control for which the Holder exercises its repurchase right with
respect to a Note or portion thereof or a redemption of all or a portion of the Notes pursuant to
Section 3.01, such conversion right in respect of the Note or portion thereof shall expire at the
close of business on the Business Day immediately preceding the Change of Control Purchase Date or
the Redemption Date, as applicable.

     The price at which shares of Common Stock shall be delivered upon conversion (the “Conversion
Price”) shall be initially equal to $0.60 per share of Common Stock, which is equal to a conversion
rate of 1,666.6667 shares of Common Stock per $1,000 principal amount of Notes (the “Conversion
Rate”). The Conversion Price shall be adjusted in certain instances as provided in paragraphs (a),
(b), (c), (d), (e), (f), (h) and (i) of Section 10.07 hereof. Notwithstanding the foregoing, for
purposes of any conversion of the principal amount of any Note (or any portion thereof) into
Preferred Stock, other than pursuant to an Automatic Conversion (defined below), (X) the
“Conversion Price” shall mean $100 and (Y) the “Conversion Rate” shall mean ten (10) shares of
Preferred Stock per $1,000 principal amount of Note.

     Section 10.02. Exercise of Conversion Right. (a) To exercise the conversion right, the Holder
of any Note to be converted shall surrender such Note duly endorsed or assigned to the Company or
in blank, at the office of any Conversion Agent, accompanied by a duly signed conversion notice
substantially in the form attached to the Note (the “Conversion Notice”) to the Company stating
that the Holder elects to convert such Note or, if less than the entire principal amount thereof is
to be converted, the portion thereof to be converted (or, in the case of a beneficial interest in a
Global Note, the Beneficial Holder shall comply with DTC’s procedures for conversion).

          (b) Notes surrendered for conversion during the period from the close of business on any
Regular Record Date to the opening of business on the next succeeding Interest Payment Date shall
be accompanied by payment in New York Clearing House funds or other

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funds acceptable to the Company of an amount equal to the interest to be received on such
Interest Payment Date on the principal amount of Notes being surrendered for conversion.

          (c) A Note (or portion thereof) shall be deemed to have been converted immediately prior to
the close of business on the day of compliance with the delivery of the Conversion Notice and
surrender of such Note for conversion in accordance with the foregoing provisions and, if required,
payments of amounts required under Section 10.02(b) and Section 10.11 (such date of compliance, the
“Conversion Date”), and at such time the rights of the Holder of such Note (or portion thereof) as
a Holder shall cease, and the Person or Persons entitled to receive the Conversion Stock issuable
upon conversion shall be treated for all purposes as the record holder or holders of such
Conversion Stock at such time. As promptly as practicable on or after the Conversion Date, and in
any event within three Business Days thereafter, the Company shall cause such Conversion Agent to
issue and deliver to such Holder or its designee a certificate or certificates for the number of
full shares of Conversion Stock issuable upon conversion (provided that, if such Conversion Agent
is participating in The Depository Trust Company (“DTC”) Fast Automated Securities Transfer Program
and the Holder is eligible to receive shares through DTC, the Conversion Agent shall instead credit
such number of full shares of Conversion Stock to the Holder’s or its designee’s balance account
with DTC through its Deposit Withdrawal Agent Commission system), together with payment in lieu of
any fraction of a share as provided in Section 10.03 hereof and any Conversion Make-Whole Payment
and payment required under Article 10, if applicable.

          (d) In the case of any Note which is converted in part only, upon such conversion the Company
shall execute and the Trustee or an Authenticating Agent shall authenticate and deliver to the
Holder thereof, at the expense of the Company, a new Note or Notes of authorized denominations in
aggregate principal amount equal to the unconverted portion of the principal amount of such Note.

     Section 10.03. Fractions of Shares. No fractional shares of Common Stock shall be issued upon
conversion of any Note or Notes into shares of Common Stock. If more than one Note shall be
converted into shares of Common Stock at one time by the same Holder, the number of full shares
which shall be issued upon conversion thereof shall be computed on the basis of the aggregate
principal amount of the Notes (or specified portions thereof) so converted. Instead of any
fractional share of Common Stock which would otherwise be issued upon conversion of any Note or
Notes (or specified portions thereof), the Company shall pay a cash adjustment in respect of such
fraction (calculated to the nearest one-100th of a share) in an amount equal to the same fraction
of the Closing Price of the Common Stock as of the Trading Day preceding the date of conversion.
Fractional shares of Preferred Stock shall be issued upon any conversion of any Note or Notes
(other than in an aggregate principal amount that is an integral multiple of $1,000) into Preferred
Stock (including pursuant to an Automatic Conversion).

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     Section 10.04. Limitations on Issuance of Common Stock.

          (a) Maximum Ownership Limitation.

               (i) Voluntary Conversions. Notwithstanding anything to the contrary contained in this
Indenture, a Beneficial Holder may not convert all or any portion of such Beneficial Holder’s Notes
into Common Stock to the extent (but only to the extent) that such Beneficial Holder and its
Affiliates would, after giving effect to such conversion, beneficially own, in the aggregate, in
excess of 4.99% of the outstanding shares of Common Stock (the “Maximum Ownership Limitation”);
provided that a Beneficial Holder, upon not less than 61 days’ prior written notice to the Company,
may increase the Maximum Ownership Limitation applicable to such Beneficial Holder (but, for the
avoidance of doubt, not for any subsequent or other Beneficial Holder) to 9.9% of the outstanding
shares of Common Stock. No such increase shall be effective prior to the 61st day after
such written notice is delivered to the Company. No prior inability to convert all or any portion
of a Beneficial Holder’s Note pursuant to this paragraph shall have any effect on the applicability
of the provisions of this Section 10.04(a)(i) with respect to any subsequent determination of
convertibility. Such Beneficial Holder’s delivery of a Conversion Notice (or compliance with DTC’s
procedures for conversion, as applicable) shall constitute a representation that, upon delivery of
the shares of Common Stock to be issued to it on the Share Delivery Date, as set forth in the
Conversion Notice, such Beneficial Holder and its Affiliates will not beneficially own more than
the Maximum Ownership Limitation applicable to such Beneficial Holder immediately after giving
effect to such issuance. The Company shall be entitled to rely on such representations deemed made
by the Beneficial Holder and shall not be deemed to violate the Maximum Ownership Limitation by
issuing to such Beneficial Holder no more than the number of shares of Common Stock provided for in
a Conversion Notice (or through DTC’s procedures for conversion, as applicable). For purposes of
the foregoing, the aggregate number of shares of Common Stock beneficially owned by a Beneficial
Holder and its Affiliates shall include the shares of Common Stock issuable upon conversion of such
Beneficial Holder’s Notes with respect to which the determination is being made, but shall exclude
the shares of Common Stock that would be issuable upon (i) conversion of the remaining, unconverted
portion of such Notes and (ii) exercise, conversion or exchange of the unexercised, unconverted or
unexchanged portion of any other securities of the Company (including any notes, warrants or
convertible preferred stock) subject to a limitation on conversion, exercise or exchange analogous
to the limitation contained herein beneficially owned by the Beneficial Holder and its Affiliates.

               (ii) Ownership Calculations. Except as set forth in the last sentence of Section
10.04(a)(i), for purposes of this Section 10.04(a), beneficial ownership and all determinations and
calculations (including, without limitation, with respect to calculation of percentage ownership)
shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and
regulations promulgated thereunder. For purposes of this Section 10.04(a), in determining the
number of outstanding shares of Common Stock, a Beneficial Holder may rely on the number of
outstanding shares of Common Stock as reflected in (1) the Company’s most recent quarterly report
on Form 10-Q or annual report on Form 10-K, as the case may be, (2) a more recent public
announcement by the Company or (3) any other notice by the Company or the transfer agent for the
Common Stock setting forth the number of shares of Common Stock outstanding. For any reason at any
time, upon the written or oral request of a Beneficial Holder,

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the Company shall within one (1) Business Day confirm orally and in writing to such Beneficial
Holder the number of shares of Common Stock then outstanding, including by virtue of any prior
conversion or exercise of convertible or exercisable securities into shares of Common Stock. In
any case, the number of outstanding shares of Common Stock shall be determined after giving effect
to the conversion, exercise or exchange of securities of the Company, including the Notes, by the
applicable Beneficial Holder and its Affiliates, as determined by the Beneficial Holder, since the
date as of which such number of outstanding shares of Common Stock was reported.

          (b) Overall Limit on Common Stock Issuable. Notwithstanding anything to the contrary contained
in this Indenture, the aggregate number of shares of Common Stock issuable by the Company and
acquirable by the Holders (including shares of Common Stock issuable upon a conversion or upon
conversion of any shares of Preferred Stock issuable upon a conversion or in payment of any Change
of Control Purchase Price, Make-Whole Premium or Conversion Make-Whole Payment) shall not exceed
19.9% of the number of shares of Common Stock outstanding immediately prior to the Closing Date,
subject to appropriate adjustment for stock splits, stock dividends, or other similar
recapitalizations affecting the Common Stock (the “Exchange Cap”), unless the Shareholder Approval
has been obtained or the Company has obtained a written opinion from outside counsel to the Company
that such approval is not required. Notwithstanding the Exchange Cap, subject to Section
10.04(a)(i), a Holder may require conversion of any amount of its Notes in connection with the
events described in clause (ii) of Section 10.01 hereof; provided that, in each such case if the
Shareholder Approval has not been obtained as of the applicable Conversion Date, the Company shall
be required to make a cash payment in lieu of issuance of Common Stock on the terms set forth in
the proviso to Section 10.01.

     Section 10.05. Automatic Conversion.

          (a) Subject to the terms and conditions of this Section 10.05 and provided that all of the
Equity Conditions are satisfied (or waived in writing by the Holders of a majority in aggregate
principal amount of the Notes then outstanding), on the third Trading Day after the receipt of the
Shareholder Approval (such Trading Day, the “Automatic Conversion Date”), an aggregate principal
amount of Notes equal to the difference (but not less than zero (0)) of (i) thirty percent (30%) of
the original principal amount of all Notes issued hereunder, minus (ii) any principal amount of
Notes that has been repaid, redeemed or repurchased by the Company, or converted into shares of
Common Stock or Preferred Stock by the Holders thereof, in accordance herewith, shall convert
automatically into that number of fully paid and nonassessable shares of Preferred Stock obtained
by multiplying the principal amount of such portion of the Notes to be so converted by 0.01579 (the
“Automatic Conversion”). Any Automatic Conversion shall be made on a pro rata basis with reference
to the aggregate principal amount held by all Holders of the Notes on the Automatic Conversion
Date, rounded up to the amount of $1,000 in principal amount on a holder-by-holder basis.

          (b) Unless the Company shall have previously called for redemption all of the Notes then
outstanding, upon an Automatic Conversion, the Company, or at its written request (which request
must include the information listed in Section 10.05(c) and be received by the Trustee not fewer
than five (5) Business Days prior (or such shorter period of time as may be acceptable to the
Trustee) to the date the Trustee is requested to give notice as described below),

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the Trustee in the name of and at the expense of the Company, shall mail or cause to be mailed
a notice of the Automatic Conversion (the “Automatic Conversion Notice”) not later than three (3)
Business Days after the Automatic Conversion Date to each Holder of Notes at its last address as
the same appears on the Note Register; provided, that if the Company shall give such notice, it
shall also give written notice of the Automatic Conversion Date to the Trustee. Notice shall be
mailed 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 Note
designated for Automatic Conversion shall not affect the validity of the Automatic Conversion of
any other Note. On the Automatic Conversion Date, the Company shall issue a press release
announcing the Automatic Conversion, the form and content of which press release shall be
determined by the Company in its sole discretion. The failure to issue any such press release or
any defect therein shall not affect the validity of the Automatic Conversion or any of the
proceedings for the Automatic Conversion.

          (c) Each Automatic Conversion Notice shall certify that all of the Equity Conditions have been
satisfied and shall specify:

               (i) the Automatic Conversion Date;

               (ii) the CUSIP, ISIN or similar number or numbers of the Notes subject to Automatic
Conversion;

               (iii) the place or places where such Notes are to be surrendered for conversion;

               (iv) the Conversion Price in effect on the Automatic Conversion Date;

               (v) the portion of the principal amount thereof to be converted; and

               (vi) a statement that on and after the Automatic Conversion Date, upon surrender of such Note,
a new Note or Notes in principal amount equal to the unconverted portion thereof will be issued.

          (d) In the event of an Automatic Conversion, the Company shall cause to be issued and
delivered to each Holder a certificate or certificates for the number of shares of Preferred Stock
issuable to such Holder upon the Automatic Conversion of the Notes held by such Holder (provided
that, if any Conversion Agent is participating in the DTC Fast Automated Securities Transfer
Program and the Holder is eligible to receive shares through DTC, the Company shall instead cause
such number of shares of Preferred Stock to be credited to such Holder’s or its designee’s balance
account with DTC through its Deposit Withdrawal Agent Commission system), along with any cash due
in respect of any accrued and unpaid interest through the Automatic Conversion Date as promptly
after the Automatic Conversion Date as practicable, and in any event within three Business Days
thereafter, in accordance with the provisions of this Article 10.

          (e) In connection with any Automatic Conversion, accrued and unpaid interest, if any,
remaining unpaid on the portion of Notes so converted through the Automatic

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Conversion Date shall be paid in cash to the Holder; provided that if the Automatic Conversion
Date is on or after a Regular Record Date but on or prior to the related Interest Payment Date,
then accrued and unpaid interest on the portion of the Notes so converted through the Automatic
Conversion Date shall be paid to Holders of record on the Automatic Conversion Date.

     Section 10.06. Conversion Make-Whole Payment.

          (a) If a Holder elects to exercise its conversion rights pursuant to this Article 10 following
the Company’s issuance of a Redemption Notice in accordance with Section 3.02, in addition to the
shares of Common Stock or Preferred Stock the Holder is otherwise entitled to receive pursuant to
this Article 10 (but subject to the limitations set forth in Section 10.04(b)), the Company shall
pay to such Holder the Conversion Make-Whole Payment. The Conversion Make-Whole Payment, if any,
shall be paid in cash or, solely at the Company’s option, in shares of Preferred Stock and shall be
payable either (i) on the Redemption Date if the Conversion Make-Whole Payment is paid in cash or
(ii) not later than three (3) Business Days after the Redemption Date if the Conversion Make-Whole
Premium is paid in shares of Preferred Stock. If the Company elects to pay the Conversion
Make-Whole Payment in shares of Preferred Stock, the value of each share of Preferred Stock to be
delivered in respect of the Conversion Make-Whole Payment shall be deemed to be equal to the
product of (A) the average Closing Price per share of Common Stock over the ten Trading Day period
ending on the Trading Day immediately preceding the Redemption Date, and (B) the number of whole
shares of Common Stock into which each share of Preferred Stock is then convertible (without giving
effect to any limitations on conversion thereof set forth in Section 6 of the Preferred C of D).

          (b) The following are conditions to the Company’s election to pay the Conversion Make-Whole
Payment in Preferred Stock:

               (i) The shares of Preferred Stock to be issued in the Conversion Make-Whole Payment hereunder
and shares of Common Stock issuable upon conversion of such shares of Preferred Stock:

                    (A) shall not require registration under any federal securities law before such shares may be
freely transferable without being subject to any transfer restrictions under the Securities Act on
the applicable Redemption Date or, if such registration is required, such registration shall be
completed and shall become effective prior to such Redemption Date; and

                    (B) shall not require registration with, or approval of, any governmental authority under any
state law or any other federal law before shares may be validly issued or delivered on the
applicable Redemption Date or, if such registration is required or such approval must be obtained,
such registration shall be completed or such approval shall be obtained prior to such Redemption
Date.

               (ii) The shares of Common Stock issuable upon conversion of the shares of Preferred Stock to
be issued for the payment of the Conversion Make-Whole Payment are, or shall have been, approved
for listing on the NYSE Amex or listed on another national securities exchange, in any case, prior
to the Redemption Date.

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               (iii) All shares of Preferred Stock which may be issued for the payment of the Conversion
Make-Whole Payment and shares of Common Stock which may be issued upon conversion of such shares of
Preferred Stock will be issued out of the Company’s authorized but unissued Preferred Stock or
Common Stock, as applicable, and will, upon issue, be duly and validly issued and fully paid and
nonassessable and free of any preemptive or similar rights and shall not be issued in violation of
Section 10.04.

               (iv) The Shareholder Approval shall have been obtained.

If any of the conditions set forth in clauses (i) through (iv) of this Section 10.06(b) are not
satisfied in accordance with the terms thereof, the Conversion Make-Whole Payment shall be paid by
the Company only in cash. The Company may not change the form of consideration to be paid with
respect to a Conversion Make-Whole Payment once it has given notice set forth in Section 3.02(a) to
Holders, except as described in the immediately preceding sentence.

     Section 10.07. Adjustment of Conversion Price. The Conversion Price shall be subject to
adjustments, calculated by the Company, from time to time as follows:

          (a) In case the Company shall hereafter pay a dividend or make a distribution to all holders
of the outstanding Common Stock in shares of Common Stock, the Conversion Price in effect at the
opening of business on the date following the date fixed for the determination of stockholders
entitled to receive such dividend or other distribution shall be reduced by multiplying such
Conversion Price by a fraction:

     (1) the numerator of which shall be the number of shares of Common Stock outstanding at
the close of business on the Record Date (as defined in Section 10.07(g)) fixed for such
determination, and

     (2) the denominator of which shall be the sum of such number of shares and the total
number of shares constituting such dividend or other distribution.

Such reduction shall become effective immediately after the opening of business on the day
following the Record Date. For the purpose of this paragraph (a), the number of shares of Common
Stock at any time outstanding shall not include shares held in the treasury of the Company. The
Company will not pay any dividend or make any distribution on shares of Common Stock held in the
treasury of the Company. If any dividend or distribution of the type described in this Section
10.04(a) is declared but not so paid or made, the Conversion Price shall again be adjusted to the
Conversion Price which would then be in effect if such dividend or distribution had not been
declared.

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

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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 issue rights or warrants to all holders of its outstanding
shares of Common Stock entitling them (for a period expiring within forty-five (45) days after the
date fixed for determination of stockholders entitled to receive such rights or warrants) to
subscribe for or purchase shares of Common Stock at a price per share less than the Closing Price
on the Trading Day immediately preceding the time of announcement of such issuance (“Market
Price”), the Conversion Price shall be adjusted so that the same shall equal the price determined
by multiplying the Conversion Price in effect immediately prior to such Record Date by a fraction:

     (1) the numerator of which shall be the number of shares of Common Stock outstanding at
the close of business on the Record Date plus the number of shares which the aggregate
offering price of the total number of shares so offered for subscription or purchase (or the
aggregate conversion price of the convertible securities so offered) would purchase at such
Market Price, and

     (2) the denominator of which shall be the number of shares of Common Stock outstanding on
the close of business on the Record Date plus the total number of additional shares of Common
Stock so offered for subscription or purchase (or into which the convertible securities so
offered are convertible).

Such adjustment shall become effective immediately after the opening of business on the day
following the Record Date fixed for determination of stockholders entitled to receive such rights
or warrants. To the extent that shares of Common Stock (or securities convertible into Common
Stock) are not delivered pursuant to such rights or warrants, upon the expiration or termination of
such rights or warrants the Conversion Price shall be readjusted to the Conversion Price which
would then be in effect had the adjustments made upon the issuance of such rights or warrants been
made on the basis of the delivery of only the number of shares of Common Stock (or securities
convertible into Common Stock) actually delivered. In the event that such rights or warrants are
not so issued, the Conversion Price shall again be adjusted to be the Conversion Price which would
then be in effect if such Record Date 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
Market Price, and in determining the aggregate offering price of such shares of Common Stock, there
shall be taken into account any consideration received 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 holders of its
Common Stock shares of any class of Capital Stock of the Company (other than any dividends or
distributions to which Section 10.07(a) applies) or evidences of its indebtedness, cash or other
assets, including securities, but excluding (1) any rights or warrants referred to in Section
10.07(c), (2) any stock, securities or other property or assets (including cash) distributed in
connection with a reclassification, change, merger, consolidation, statutory share exchange,
combination, sale or conveyance to which Section 10.14 hereof applies and (3) dividends and
distributions paid exclusively in cash (the securities described in foregoing clauses

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(1), (2) and (3) hereinafter in this Section 10.07(d) called the “excluded securities”), then,
in each such case (unless the Company elects to reserve such securities for distribution to the
Noteholders upon the conversion of the Notes so that any such Holder converting Notes will receive
upon such conversion, in addition to the shares of Common Stock to which such Holder is entitled,
the amount and kind of such securities which such Holder would have received if such Holder had
converted its Notes into Common Stock immediately prior to the Record Date), subject to the second
succeeding paragraph of this Section 10.07(d), the Conversion Price shall be adjusted so that the
same shall be equal to the price determined by multiplying the Conversion Price in effect
immediately prior to the close of business on the Record Date (as defined in Section 10.07(g)) with
respect to such distribution by a fraction:

     (1) the numerator of which shall be the Current Market Price (determined as provided in
Section 10.07(g)) on such Record Date less the fair market value (as determined by the Board
of Directors, whose determination shall be conclusive and set forth in a Board Resolution) on
such Record Date of the portion of the securities so distributed (other than excluded
securities) applicable to one share of Common Stock (determined on the basis of the number of
shares of the Common Stock outstanding on the Record Date), and

     (2) the denominator of which shall be such Current Market Price.

Such reduction shall become effective immediately prior to the opening of business on the day
following the Record Date. However, in the event that the then fair market value (as so
determined) of the portion of the securities so distributed (other than excluded securities)
applicable to one share of Common Stock is equal to or greater than the Current Market Price on the
Record Date, in lieu of the foregoing adjustment, adequate provision shall be made so that each
Holder shall have the right to receive upon conversion of a Note (or any portion thereof) the
amount of securities so distributed (other than excluded securities) such Holder would have
received had such Holder converted such Note (or portion thereof) immediately prior to such Record
Date. In the event that such dividend or distribution is not so paid or made, the Conversion Price
shall again be adjusted to be the Conversion Price which would then be in effect if such dividend
or distribution had not been declared.

     If the Board of Directors determines the fair market value of any distribution for purposes of
this Section 10.07(d) by reference to the actual or when issued trading market for any securities
comprising all or part of such distribution (other than excluded securities), 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 10.07(g) to the extent possible, unless the Board of
Directors in a Board Resolution determines in good faith that determining the fair market value
during the Reference Period would not be in the best interest of the Holder.

     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”):

               (ii) are deemed to be transferred with such shares of Common Stock;

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               (iii) are not exercisable; and

               (iv) are also issued in respect of future issuances of Common Stock,

shall be deemed not to have been distributed for purposes of this Section 10.07(d) (and no
adjustment to the Conversion Price under this Section 10.07 (d) will be required) until the
occurrence of the earliest Trigger Event. If such right or warrant is subject to subsequent
events, upon the occurrence of which such right or warrant shall become exercisable to purchase
different securities, evidences of indebtedness or other assets or entitle the holder to purchase a
different number or amount of the foregoing or to purchase any of the foregoing at a different
purchase price, then the occurrence of each such event shall be deemed to be the date of issuance
and Record Date with respect to a new right or warrant (and a termination or expiration of the
existing right or warrant without exercise by the holder thereof). In addition, in the event of
any distribution (or deemed distribution) of rights or warrants, or any Trigger Event or other
event (of the type described in the preceding sentence) with respect thereto, that resulted in an
adjustment to the Conversion Price under this Section 10.07(d):

     (1) in the case of any such rights or warrants which shall all have been redeemed or
repurchased without exercise by any holders thereof, the Conversion Price 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, equal to the per share redemption
or repurchase price received by a holder of Common Stock with respect to such rights or
warrant (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 all of which shall have expired or been
terminated without exercise, the Conversion Price shall be readjusted as if such rights and
warrants had never been issued.

No adjustment of the Conversion Price shall be made pursuant to this Section 10.07(d) in respect of
rights or warrants distributed or deemed distributed on any Trigger Event to the extent that such
rights or warrants are actually distributed, or reserved by the Company for distribution to Holders
of Notes upon conversion by such Holders to Common Stock.

     For purposes of this Section 10.07(d) and Sections 10.07(a), 10.07(b) and 10.07(c), any
dividend or distribution to which this Section 10.07(d) is applicable that also includes shares of
Common Stock, a subdivision or combination of Common Stock to which Section 10.07(b) applies, or
rights or warrants to subscribe for or purchase shares of Common Stock to which Section 10.07(c)
applies (or any combination thereof), shall be deemed instead to be:

     (3) a dividend or distribution of the evidences of indebtedness, assets, shares of
Capital Stock, rights or warrants other than such shares of Common Stock, such subdivision or
combination or such rights or warrants to which Sections 10.07(a), 10.07(b) and 10.07(c)
apply, respectively (and any Conversion Price reduction required by this Section 10.07(d) with
respect to such dividend or distribution shall then be made), immediately followed by

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     (4) a dividend or distribution of such shares of Common Stock, such subdivision or
combination or such rights or warrants (and any further Conversion Price reduction required by
Sections 10.07(a), 10.07(b) and 10.07(c) with respect to such dividend or distribution shall
then be made), except:

                    (B) the Record Date of such dividend or distribution shall be substituted as (x) “the date
fixed for the determination of stockholders entitled to receive such dividend or other
distribution”, “Record Date fixed for such determinations” and “Record Date” within the meaning of
Section 10.07(a), (y) “the day upon which such subdivision becomes effective” and “the day upon
which such combination becomes effective” within the meaning of Section 10.07(b), and (z) as “the
date fixed for the determination of stockholders entitled to receive such rights or warrants”, “the
Record Date fixed for the determination of the stockholders entitled to receive such rights or
warrants” and such “Record Date” within the meaning of Section 10.07(c), and

                    (C) 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 10.07(a) and any reduction or increase in the number of shares of Common Stock resulting
from such subdivision or combination shall be disregarded in connection with such dividend or
distribution.

          (e) In case the Company shall, by dividend or otherwise, distribute to all holders of its
Common Stock cash (excluding any cash that is distributed upon a reclassification, change, merger,
consolidation, statutory share exchange, combination, sale or conveyance to which Section 10.14
hereof applies or as part of a distribution referred to in Section 10.07(d) hereof), then and in
each such case, immediately after the close of business on such date, the Conversion Price shall be
reduced so that the same shall equal the price determined by multiplying the Conversion Price in
effect immediately prior to the close of business on such Record Date by a fraction:

               (i) the numerator of which shall be equal to the Current Market Price on the Record Date less
an amount equal to the quotient of (x) such amount distributed to all holders of its Common Stock
and (y) the number of shares of Common Stock outstanding on the Record Date, and

               (ii) the denominator of which shall be equal to the Current Market Price on such date.

However, in the event that the then fair market value (as so determined) of the cash so distributed
applicable to one share of Common Stock is equal to or greater than the Current Market Price on the
Record Date, in lieu of the foregoing adjustment, adequate provision shall be made so that each
Holder shall have the right to receive upon conversion of a Note (or any portion thereof) the
amount of cash such Holder would have received had such Holder converted such Note (or portion
thereof) immediately prior to such Record Date. In the event that such dividend or distribution is
not so paid or made, the Conversion Price shall again be adjusted to be the Conversion Price which
would then be in effect if such dividend or distribution had not been declared.

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          (f) In case a tender offer made by the Company or any of its Subsidiaries for all or any
portion of the Common Stock shall expire and such tender offer (as amended upon the expiration
thereof) shall require the payment to stockholders (based on the acceptance (up to any maximum
specified in the terms of the tender offer) of Purchased Shares (as defined below)) of an aggregate
consideration having a fair market value (as determined in good faith by the Board of Directors,
whose determination shall be conclusive and set forth in a Board Resolution) that combined together
with the aggregate of the cash plus the fair market value (as determined by the Board of Directors,
whose determination shall be conclusive and set forth in a Board Resolution), as of the expiration
of such tender offer, of other consideration payable in respect of any other tender offers, by the
Company or any of its Subsidiaries for all or any portion of the Common Stock expiring within the
12 months preceding the expiration of such tender offer and in respect of which no adjustment
pursuant to this Section 10.07(f) has been made exceeds 10% of the product of the Current Market
Price (determined as provided in Section 10.07(g)) as of the last time (the “Expiration Time”)
tenders could have been made pursuant to such tender offer (as it may be amended) times the number
of shares of Common Stock outstanding (including any tendered shares) on the Expiration Time, then,
and in each such case, immediately prior to the opening of business on the day after the date of
the Expiration Time, the Conversion Price shall be adjusted so that the same shall equal the price
determined by multiplying the Conversion Price in effect immediately prior to close of business on
the date of the Expiration Time by a fraction:

               (i) the numerator of which shall be the number of shares of Common Stock outstanding
(including any tendered shares) at the Expiration Time multiplied by the Current Market Price of
the Common Stock on the Trading Day next succeeding the Expiration Time, and

               (ii) the denominator of which shall be the sum of (x) the fair market value (determined as
aforesaid) of the aggregate consideration payable to stockholders based on the acceptance (up to
any maximum specified in the terms of the tender offer) of all shares validly tendered and not
withdrawn as of the Expiration Time (the shares deemed so accepted, up to any such maximum, being
referred to as the “Purchased Shares”) and (y) the product of the number of shares of Common Stock
outstanding (less any Purchased Shares) on the Expiration Time and the Current Market Price of the
Common Stock on the Trading Day next succeeding the Expiration Time.

Such reduction (if any) shall become effective immediately prior to the opening of business on the
day following the Expiration Time. In the event that the Company or any such Subsidiary, as the
case may be, is obligated to purchase shares pursuant to any such tender offer, but the Company or
any such Subsidiary, as the case may be, is permanently prevented by applicable law from effecting
any such purchases or all such purchases are rescinded, the Conversion Price shall again be
adjusted to be the Conversion Price which would then be in effect if such tender offer had not been
made. If the application of this Section 10.07(f) to any tender offer would result in an increase
in the Conversion Price, no adjustment shall be made for such tender offer under this Section
10.07(f).

          (g) For purposes of this Section 10.07, the following terms shall have the meanings indicated:

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     (1) “Current Market Price” shall mean the average of the daily Closing Prices per share
of Common Stock for the ten consecutive Trading Days immediately prior to the date in
question; provided, however, that if:

               (ii) the “ex” date (as hereinafter defined) for any event (other than the issuance or
distribution requiring such computation) that requires an adjustment to the Conversion Price
pursuant to Section 10.04(a), (b), (c), (d), (e) or (f) occurs during such ten consecutive Trading
Days, the Closing Price for each Trading Day prior to the “ex” date for such other event shall be
adjusted by multiplying such Closing Price by the same fraction by which the Conversion Price is so
required to be adjusted as a result of such other event;

               (iii) the “ex” date for any event (other than the issuance or distribution requiring such
computation) that requires an adjustment to the Conversion Price pursuant to Section 10.07(a), (b),
(c), (d), (e) or (f) occurs on or after the “ex” date for the issuance or distribution requiring
such computation and prior to the day in question, the Closing Price for each Trading Day on and
after the “ex” date for such other event shall be adjusted by multiplying such Closing Price by the
reciprocal of the fraction by which the Conversion Price is so required to be adjusted as a result
of such other event; and

               (iv) the “ex” date for the issuance or distribution requiring such computation is prior to the
day in question, after taking into account any adjustment required pursuant to clause (i)or (ii) of
this proviso, the Closing Price for each Trading Day on or after such “ex” date shall be adjusted
by adding thereto the amount of any cash and the fair market value (as determined by the Board of
Directors in a manner consistent with any determination of such value for purposes of Section
10.07(d) or (f), whose determination shall be conclusive and set forth in a Board Resolution) of
the evidences of indebtedness, shares of Capital Stock or assets being distributed applicable to
one share of Common Stock as of the close of business on the day before such “ex” date.

     For purposes of any computation under Section 10.07(f), the Current Market Price of the Common
Stock on any date shall be deemed to be the average of the daily Closing Prices per share of Common
Stock for such day and the next two succeeding Trading Days; provided, however, that if the “ex”
date for any event (other than the tender offer requiring such computation) that requires an
adjustment to the Conversion Price pursuant to Section 10.07 (a), (b), (c), (d), (e) or (f) occurs
on or after the Expiration Time for the tender offer requiring such computation and prior to the
day in question, the Closing Price for each Trading Day on and after the “ex” date for such other
event shall be adjusted by multiplying such Closing Price by the reciprocal of the fraction by
which the Conversion Price is so required to be adjusted as a result of such other event. For
purposes of this paragraph, the term “ex” date, when used:

                    (A) with respect to any issuance or distribution, means the first date on which the Common
Stock trades regular way on the relevant exchange or in the relevant market from which the Closing
Price was obtained without the right to receive such issuance or distribution;

                    (B) with respect to any subdivision or combination of shares of Common Stock, means the first
date on which the Common Stock trades regular way on such

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exchange or in such market after the time at which such subdivision or combination becomes
effective, and

                    (C) with respect to any tender offer, means the first date on which the Common Stock trades
regular way on such exchange or in such market after the Expiration Time of such offer.

Notwithstanding the foregoing, whenever successive adjustments to the Conversion Price are called
for pursuant to this Section 10.07, such adjustments shall be made to the Current Market Price as
may be necessary or appropriate to effectuate the intent of this Section 10.07 and to avoid unjust
or inequitable results as determined in good faith by the Board of Directors.

     (2) “fair market value” shall mean the amount which a willing buyer would pay a willing seller
in an arm’s length transaction.

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

          (h) The Company may make such increases in the Conversion Rate, in addition to those required
by Section 10.07(a), (b), (c), (d), (e) or (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.

     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 days and the
reduction is irrevocable during the period and the Board of Directors determines in good faith that
such reduction would be in the best interests of the Company, which determination shall be
conclusive and set forth in a Board Resolution. Whenever the Conversion Rate is increased pursuant
to the preceding sentence, the Company shall mail to the Trustee and each Holder at the address of
such Holder as it appears in the Note Register a notice of the increase at least 15 days prior to
the date the increased Conversion Rate takes effect, and such notice shall state the increased
Conversion Rate and the period during which it will be in effect.

          (i) No adjustment in the Conversion Price shall be required unless such adjustment would
require an increase or decrease of at least 1% in such price; provided, however, that any
adjustments which by reason of this Section 10.07(i) are not required to be made shall be carried
forward and taken into account in any subsequent adjustment. All calculations under this Article
10 shall be made by the Company and shall be made to the nearest one hundredth of a cent or to the
nearest one hundredth of a share, as the case may be. No adjustment need be made for a change in
the par value or no par value of the Common Stock.

          (j) In any case in which this Section 10.07 provides that an adjustment shall become effective
immediately after a Record Date for an event, the Company may defer until the

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occurrence of such event (i) issuing to the Holder of any Note converted after such Record
Date and before the occurrence of such event the additional shares of Common Stock issuable upon
such conversion by reason of the adjustment required by such event over and above the Common Stock
issuable upon such conversion before giving effect to such adjustment and (ii) paying to such
Holder any amount in cash in lieu of any fraction pursuant to Section 10.03 hereof.

          (k) For purposes of this Section 10.07, the number of shares of Common Stock at any time
outstanding shall not include shares held in the treasury of the Company but shall include shares
issuable in respect of scrip certificates issued in lieu of fractions of shares of Common Stock.
The Company will not pay any dividend or make any distribution on shares of Common Stock held in
the treasury of the Company.

     Section 10.08. Notice of Adjustments of Conversion Price. Whenever the Conversion Price is
adjusted as herein provided (other than in the case of an adjustment pursuant to the second
paragraph of Section 10.07(h) for which the notice required by such paragraph has been provided),
the Company shall promptly file with the Trustee and any Conversion Agent other than the Trustee an
Officers’ Certificate setting forth the adjusted Conversion Price and showing in reasonable detail
the facts upon which such adjustment is based. Promptly after delivery of such Officers’
Certificate, the Company shall prepare a notice stating that the Conversion Price has been adjusted
and setting forth the adjusted Conversion Price and the date on which each adjustment becomes
effective, and shall mail such notice to each Holder at the address of such Holder as it appears in
the Note Register within 20 days of the effective date of such adjustment. Failure to deliver such
notice shall not effect the legality or validity of any such adjustment.

     Section 10.09. Notice Prior to Certain Actions. In case at any time after the date hereof:

     (1) the Company shall declare a dividend (or any other distribution) on its Common Stock
payable otherwise than in cash out of its capital surplus or its consolidated retained
earnings;

     (2) the Company shall authorize the granting to the holders of its Common Stock of rights
or warrants to subscribe for or purchase any shares of Capital Stock of any class (or of
securities convertible into shares of Capital Stock of any class) or of any other rights;

     (3) there shall occur any reclassification of the Common Stock of the Company (other than
a subdivision or combination of its outstanding Common Stock, a change in par value, a change
from par value to no par value or a change from no par value to par value), or any merger,
consolidation, statutory share exchange or combination to which the Company is a party and for
which approval of any shareholders of the Company is required, or the sale, transfer or
conveyance of all or substantially all of the assets of the Company; or

     (4) there shall occur the voluntary or involuntary dissolution, liquidation or winding up
of the Company;

the Company shall cause to be filed at each office or agency maintained for the purpose of
conversion of Notes pursuant to Section 4.03 hereof, and shall cause to be provided to the

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Trustee and all Holders in accordance with Section 11.02 hereof, at least 20 days (or 10 days in
any case specified in clause (1) or (2) above) prior to the applicable record or effective date
hereinafter specified, a notice stating:

                    (B) the date on which a record is to be taken for the purpose of such dividend, distribution,
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, rights or warrants are to be
determined, or

                    (C) the date on which such reclassification, merger, consolidation, statutory share exchange,
combination, sale, transfer, conveyance, dissolution, liquidation or winding up is expected to
become effective, and the date as of which it is expected that holders of Common Stock of record
shall be entitled to exchange their shares of Common Stock for securities, cash or other property
deliverable upon such reclassification, merger, consolidation, statutory share exchange, sale,
transfer, dissolution, liquidation or winding up.

     The Company shall make public disclosure thereof prior to or contemporaneously with the giving
of such notice to the Holders. Neither the failure to give such notice nor any defect therein
shall affect the legality or validity of the proceedings or actions described in clauses (1)
through (4) of this Section 10.09.

     Section 10.10. Company to Reserve Common Stock and Preferred Stock. The Company shall take
all action necessary to at all times reserve and keep available, free from preemptive rights, out
of its authorized but unissued Common Stock and Preferred Stock, for the purpose of effecting the
conversion of Notes, the full number of shares of fully paid and nonassessable Common Stock and
Preferred Stock then issuable upon the conversion of all Notes outstanding.

     Section 10.11. Taxes on Conversions. Except as provided in the next sentence, the Company
will pay any and all taxes (other than taxes on income) and duties that may be payable in respect
of the issue or delivery of shares of Conversion Stock on conversion of, or as payment on, Notes
pursuant hereto. A Holder delivering a Note for conversion shall be liable for and will be
required to pay any tax or duty which may be payable in respect of any transfer involved in the
issue and delivery of shares of Conversion Stock in a name other than that of the Holder of the
Note or Notes to be converted, and no such issue or delivery shall be made unless the Person
requesting such issue has paid to the Company the amount of any such tax or duty, or has
established to the satisfaction of the Company that such tax or duty has been paid.

     Section 10.12. Covenant as to Conversion Stock. The Company covenants that all shares of
Conversion Stock which may be issued upon conversion of Notes or in payment of the Change of
Control Purchase Price, Make-Whole Premium or Conversion Make-Whole Payment will upon issue be
fully paid and nonassessable and, except as provided in Section 10.14, the Company will pay all
taxes, liens and charges with respect to the issue thereof.

     Section 10.13. Cancellation of Converted Notes. All Notes delivered for conversion shall be
delivered to the Trustee to be canceled by or at the direction of the Trustee, which shall dispose
of the same as provided in Section 2.11.

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     Section 10.14. Effect of Reclassification, Consolidation, Merger or Sale. If any of following
events occur, namely:

     (1) any reclassification or change of the outstanding shares of 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),

     (2) any merger, consolidation, statutory share exchange or combination of the Company
with another corporation as a result of which holders of Common Stock shall be entitled to
receive stock, securities or other property or assets (including cash) with respect to or in
exchange for such Common Stock or

     (3) any sale or conveyance of all or substantially all the properties and assets of the
Company to any other corporation as a result of which holders of Common Stock shall be
entitled to receive stock, securities or other property or assets (including cash) with
respect to or in exchange for such Common Stock,

the Company or the successor or purchasing corporation, as the case may be, shall execute with the
Trustee and the Company a supplemental indenture (which shall comply with the TIA as in force at
the date of execution of such supplemental indenture if such supplemental indenture is then
required to so comply) providing that the Notes shall be convertible into the kind and amount of
shares of stock and other securities or property or assets (including cash) which such Holder would
have been entitled to receive upon such reclassification, change, merger, consolidation, statutory
share exchange, combination, sale or conveyance had such Notes been converted in full (without
giving effect to any limitations on conversion under Section 10.04) into Common Stock immediately
prior to such reclassification, change, merger, consolidation, statutory share exchange,
combination, sale or conveyance assuming such holder of Common Stock did not exercise its rights of
election, if any, as to the kind or amount of securities, cash or other property receivable upon
such reclassification, change, merger, consolidation, statutory share exchange, combination, sale
or conveyance (provided that, if the kind or amount of securities, cash or other property
receivable upon such reclassification, change, merger, consolidation, statutory share exchange,
combination, sale or conveyance is not the same for each share of Common Stock in respect of which
such rights of election shall not have been exercised (“Non-Electing Share”), then for the purposes
of this Section 10.14 the kind and amount of securities, cash or other property receivable upon
such reclassification, change, merger, consolidation, statutory share exchange, combination, sale
or conveyance for each Non-Electing Share shall be deemed to be the kind and amount so receivable
per share by a plurality of the Non-Electing Shares). Such supplemental indenture shall provide
for adjustments which shall be as nearly equivalent as may be practicable to the adjustments
provided for in this Article 10. If, in the case of any such reclassification, change, merger,
consolidation, statutory share exchange, combination, sale or conveyance, the stock or other
securities and assets receivable thereupon by a holder of shares 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, merger, consolidation, statutory
share exchange, combination, sale or conveyance, 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 Notes as the Board of Directors shall reasonably consider necessary
by reason of

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the foregoing, including to the extent practicable the provisions providing for the repurchase
rights set forth in Section 3.05 hereof.

     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 Note Register, 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 10.14 shall similarly apply to successive
reclassifications, mergers, consolidations, statutory share exchanges, combinations, sales and
conveyances.

     If this Section 10.14 applies to any event or occurrence, Section 10.07 hereof shall not
apply.

     Section 10.15. Responsibility of Trustee for Conversion Provisions. The Trustee and any
Conversion Agent shall not at any time be under any duty or responsibility to any Holder of Notes
to determine whether any facts exist which may require any adjustment of the Conversion Price, or
with respect to the nature or intent of any such adjustments when made, or with respect to the
method employed, or herein or in any supplemental indenture provided to be employed, in making the
same. Neither the Trustee nor any Conversion Agent shall be accountable with respect to the
validity or value (of the kind or amount) of any Common Stock, or of any other securities or
property, which may at any time be issued or delivered upon the conversion of any Note; and it or
they do not make any representation with respect thereto. Neither the Trustee nor any Conversion
Agent shall be responsible for any failure of the Company to make any cash payment or to issue,
transfer or deliver any shares of stock or share certificates or other securities or property upon
the surrender of any Note for the purpose of conversion; and the Trustee and any Conversion Agent
shall not be responsible or liable for any failure of the Company to comply with any of the
covenants of the Company contained in this Article.

     Section 10.16. Cash Damages. If by the date (a “Share Delivery Date”) that is three (3)
Business Days after a Conversion Date or the Automatic Conversion Date, as applicable, there shall
not be issued and delivered to a Beneficial Holder or its designee a certificate for, or credited
to such Beneficial Holder’s or its designee’s balance account with DTC, the number of shares of
Conversion Stock to which such Beneficial Holder is entitled upon such conversion, and if on or
after the Share Delivery Date such Beneficial Holder purchases (in an open market transaction or
otherwise) shares of Common Stock to deliver in satisfaction of a sale by such Beneficial Holder of
shares of Common Stock that such Beneficial Holder anticipated receiving from the Company (or, in
the case of an Automatic Conversion or other conversion into Preferred Stock, issuable upon
conversion of the shares of Preferred Stock that the Beneficial Holder anticipated receiving from
the Company, without giving effect to any limitations on conversion set forth in Section 6 of the
Preferred C of D) upon such conversion (a “Buy-In”), then the Company shall, within three (3)
Business Days after such Beneficial Holder’s request and in such Beneficial Holder’s discretion,
either (i) pay cash to such Beneficial Holder in an amount equal to such Beneficial Holder’s total
purchase price (including brokerage commissions, if any) for the shares of Common Stock so
purchased (the “Buy-In Price”), at which point the Company’s obligation to deliver such
certificate, or credit such shares to such

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Beneficial Holder’s or its designee’s balance account with DTC, shall terminate, or (ii)
promptly (and in any event within one (1) Business Day) honor its obligation to deliver to the
Holder a certificate or certificates representing such shares of Conversion Stock that the Company
was required to deliver to the Beneficial Holder in connection with the conversion, or credit such
shares to such Beneficial Holder’s or its designee’s balance account with DTC, and pay cash to the
Beneficial Holder in an amount equal to the excess (if any) of the Buy-In Price over the product of
(A) such number of shares of Common Stock that the Company was required to deliver to such
Beneficial Holder (or, in the case of an Automatic Conversion or other conversion into Preferred
Stock, issuable upon conversion of such number of shares of Preferred Stock (without giving effect
to any limitations on conversion set forth in Section 6 of the Preferred C of D) that the Company
was required to deliver to such Beneficial Holder) in connection with the conversion, times (B) the
Closing Price of the Common Stock on the Share Delivery Date. The Beneficial Holder shall provide
the Company written notice indicating the amounts payable to the Beneficial Holder in respect of
the Buy-In, together with applicable confirmations and other evidence reasonably requested by the
Company.

     Section 10.17. Application of Conversion Amounts. Unless otherwise specified in writing by
the Holder of any Note, any principal of such Note which such Holder converts in accordance with
this Article 10 shall be deducted first from any principal of such Note as to which the Company has
exercised its right to redeem in accordance with this Indenture but has not yet redeemed.

ARTICLE 11

MISCELLANEOUS

     Section 11.01. Trust Indenture Act Controls. This Indenture is hereby made subject to, and
shall be governed by, the provisions of the TIA required to be part of and to govern indentures
qualified under the TIA; provided, however, that, unless otherwise required by law, notwithstanding
the foregoing, this Indenture and the Notes issued hereunder shall not be subject to the provisions
of subsections (a)(1), (a)(2), and (a)(3) of Section 314 of the TIA as now in effect or as
hereafter amended or modified; provided further that this Section 11.01 shall not require this
Indenture or the Trustee to be qualified under the TIA prior to the time such qualification is in
fact required under the terms of the TIA, nor shall it constitute any admission or acknowledgment
by any party to the Indenture that any such qualification is required prior to the time such
qualification is in fact required under the terms of the TIA. 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 request, demand, authorization, notice, waiver, consent or
communication shall be in writing and delivered in person or mailed by first-class mail, postage
prepaid, addressed as follows or transmitted by facsimile transmission (confirmed by guaranteed
overnight courier) to the following facsimile numbers:

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     if to the Company:

Gasco Energy, Inc.

8 Inverness Drive

Suite 100

Englewood, CO 80112

Attention: Chief Financial Officer

Facsimile No. (303) 483-0011

     if to the Trustee:

Wells Fargo Bank, N.A.

1445 Ross Avenue, 2nd Floor

MAC T5303-022

Dallas, TX 75202

Attention: Corporate Trust Services

Facsimile No. (214) 777-4086

     The Company or the Trustee by notice given to the other in the manner provided above may
designate additional or different addresses for subsequent notices or communications.

     Any notice or communication given to a Noteholder shall be mailed to the Noteholder, by
first-class mail, postage prepaid, at the Noteholder’s address as it appears on the registration
books of the Note Registrar and shall be sufficiently given if so mailed within the time
prescribed.

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

     If the Company mails a notice or communication to the Noteholders, it shall mail a copy to the
Trustee and each Note Registrar, Paying Agent, Conversion Agent or co-registrar.

     Section 11.03. Communication by Holders with Other Holders. Noteholders may communicate
pursuant to Section 312(b) of the TIA with other Noteholders with respect to their rights under
this Indenture or the Notes. The Company, the Trustee, the Note Registrar, the Paying Agent, the
Conversion Agent and anyone else shall have the protection of Section 312(c) of the TIA.

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

     (1) an Officers’ Certificate 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

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     (2) an Opinion of Counsel 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 Officers’ Certificate or
Opinion of Counsel with respect to compliance with a covenant or condition provided for in this
Indenture shall include:

     (1) a statement that each person making such Officers’ Certificate or Opinion of Counsel
has read such covenant or condition;

     (2) a brief statement as to the nature and scope of the examination or investigation upon
which the statements or opinions contained in such Officers’ Certificate or Opinion of Counsel
are based;

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

     (4) a statement that, in the opinion of such person, such covenant or condition has been
complied with.

     Section 11.06. Separability Clause. In case any provision in this Indenture or in the Notes
shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the
remaining provisions shall not in any way be affected or impaired thereby.

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

     Section 11.08. Legal Holidays. A “Legal Holiday” is any day other than a Business Day. If
any specified date (including a date for giving notice) is a Legal Holiday, the action shall be
taken on the next succeeding day that is not a Legal Holiday, and, if the action to be taken on
such date is a payment in respect of the Notes, no interest, if any, shall accrue for the
intervening period.

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

     Section 11.10. 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
Notes or this Indenture or for any claim based on, in respect of or by reason of such obligations
or their creation. By accepting a Note, each Noteholder shall waive and release all such
liability. The waiver and release shall be part of the consideration for the issue of the Notes.

78

 

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

     Section 11.12. Benefits of Indenture. Nothing in this Indenture or in the Notes, express or
implied, shall give to any Person, other than the parties hereto, any Paying Agent, any
authenticating agent, any Note Registrar and their successors hereunder and the Holders, any
benefit or any legal or equitable right, remedy or claim under this Indenture.

     Section 11.13. Table of Contents, Heading, Etc. The table of contents and the titles and
headings of the Articles and Sections of this Indenture have been inserted for convenience of
reference only, are not to be considered a part hereof, and shall in no way modify or restrict any
of the terms or provisions hereof.

     Section 11.14. Authenticating Agent. The Trustee may appoint an authenticating agent (the
“Authenticating Agent”) that shall be authorized to act on its behalf, and subject to its
direction, in the authentication and delivery of Notes in connection with the original issuance
thereof and transfers and exchanges of Notes hereunder, including under Sections 2.03, 2.07, 2.08,
3.08 and 10.02, as fully to all intents and purposes as though the authenticating agent had been
expressly authorized by this Indenture and those Sections to authenticate and deliver Notes. For
all purposes of this Indenture, the authentication and delivery of Notes by the Authenticating
Agent shall be deemed to be authentication and delivery of such Notes “by the Trustee” and a
certificate of authentication executed on behalf of the Trustee by an Authenticating Agent shall be
deemed to satisfy any requirement hereunder or in the Notes for the Trustee’s certificate of
authentication. Such Authenticating Agent shall at all times be a Person eligible to serve as
trustee hereunder pursuant to Section 7.09.

     Any corporation into which any Authenticating Agent may be merged or converted or with which
it may be consolidated, or any corporation resulting from any merger, consolidation or conversion
to which any Authenticating Agent shall be a party, or any corporation succeeding to all or
substantially all the corporate trust business of any Authenticating Agent, shall be the successor
of the Authenticating Agent hereunder, if such successor corporation is otherwise eligible under
this Section 11.14, without the execution or filing of any paper or any further act on the part of
the parties hereto or the Authenticating Agent or such successor corporation.

     Any Authenticating Agent may at any time resign by giving written notice of resignation to the
Trustee and to the Company. The Trustee may at any time terminate the agency of any Authenticating
Agent by giving written notice of termination to such Authenticating Agent and to the Company.
Upon receiving such a notice of resignation or upon such a termination, or in case at any time any
Authenticating Agent shall cease to be eligible under this Section, the Trustee shall either
promptly appoint a successor Authenticating Agent or itself assume the duties and obligations of
the former Authenticating Agent under this Indenture and, upon such appointment of a successor
Authenticating Agent, if made, shall give written notice of such appointment of a successor
Authenticating Agent to the Company and shall mail notice of such appointment of a successor
Authenticating Agent to all Holders as the names and addresses of such Holders appear on the Note
Register.

79

 

     The Company agrees to pay to the Authenticating Agent from time to time such reasonable
compensation for its services as shall be agreed upon in writing between the Company and the
Authenticating Agent.

     The provisions of Sections 2.12, 7.03, 7.04, 7.07 and this Section 11.14 shall be applicable
to any Authenticating Agent.

     Section 11.15. Execution In Counterparts. This Indenture may be executed in any number of
counterparts, each of which shall be an original, but such counterparts shall together constitute
but one and the same instrument.

     Section 11.16. Other Remedies. The Company acknowledges that a breach by it of any of its
obligations hereunder and under the Notes will cause irreparable harm to the Holders and that the
remedy at law for any such breach may be inadequate. The Company therefore agrees that, in the
event of any such breach or threatened breach, the Trustee and the Holders shall be entitled to
seek specific performance for, or other equitable relief with respect to, a breach by the Company
or any of its obligations hereunder and under the Notes, without the necessity of showing economic
loss and without any bond or other security being required.

80

 

     IN WITNESS WHEREOF, the undersigned, being duly authorized, have executed this Indenture on
behalf of the respective parties hereto as of the date first above written.

	 	 	 	 	 
	 	GASCO ENERGY, INC.

 	 
	 	By:  	/s/ W. King Grant
 	 
	 	 	Name:  	W. King Grant 	 
	 	 	Title:  	President and Chief Financial Officer 	 
	 
	 	WELLS FARGO BANK, NATIONAL ASSOCIATION,

as Trustee

 	 
	 	By:  	/s/ Patrick T. Giordano
 	 
	 	 	Name:  	Patrick T. Giordano 	 
	 	 	Title:  	Vice President 	 

 

 

	 	 	 	 	 

EXHIBIT A

     FOR GLOBAL NOTE ONLY: [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR
PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME
AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY PAYMENT
HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE
OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN
INTEREST HEREIN.

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

     THIS NOTE IS BEING ISSUED WITH ORIGINAL ISSUE DISCOUNT FOR UNITED STATES FEDERAL INCOME TAX
PURPOSES. FOR INFORMATION REGARDING THE ISSUE PRICE, THE TOTAL AMOUNT OF ORIGINAL ISSUE DISCOUNT,
THE ISSUE DATE, AND THE YIELD TO MATURITY OF THE NOTE, PLEASE CONTACT GASCO ENERGY, INC.,
ATTENTION: CHIEF FINANCIAL OFFICER, 8 INVERNESS DRIVE EAST, SUITE 100, ENGLEWOOD, CO 80112,
TELEPHONE: (303) 483-0044, FACSIMILE: (303) 483-0011.

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GASCO ENERGY, INC.

5.50% Convertible Senior Notes due 2015

			
	 	 	 
	No.
	 	CUSIP: [                    ]

Issue Date:

     GASCO ENERGY, INC., a Nevada corporation, promises to pay to [                    ] or registered
assigns, the principal sum of [                    ] DOLLARS ($[                    ]) on [                    , 2015].

     This Note shall bear interest as specified on the other side of this Note. This Note is
convertible as specified on the other side of this Note.

     Additional provisions of this Note are set forth on the other side of this Note.

	 	 	 	 	 
	Dated:
           
         
         
          	GASCO ENERGY, INC.

 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	 	 

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TRUSTEE’S CERTIFICATE OF

AUTHENTICATION

     This is one of the Notes referred to in the within-mentioned Indenture (as defined on the
other side of this Note).

	 	 	 	 	 
	WELLS FARGO BANK, NATIONAL ASSOCIATION,
 as Trustee
 	 	 
	By:  	 	 	 
	 	Authorized Signatory 	 	 
	 	 	 	 
	 
	 	 	 
	By:  	 	 	 
	 	As Authenticating Agent 	 	 
	 	(if different from Trustee) 	 	 
	 

Dated: __________________

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[FORM OF REVERSE SIDE OF NOTE]

5.50% Convertible Senior Note due 2015

1. Cash Interest.

     The Company promises to pay interest in cash on the principal amount of this Note at the rate
per annum of 5.50%. The Company will pay cash interest semiannually in arrears on April 5 and
October 5 of each year (each an “Interest Payment Date”), beginning October 5, 2010, to Holders of
record at the close of business on March 15 and September 15 (whether or not a business day) (each
a “Regular Record Date”), as the case may be, immediately preceding such Interest Payment Date, and
the Company will pay interest in arrears on the Stated Maturity to the Holder to whom it pays the
principal of this Note. Cash interest on the Notes will accrue from the most recent date to which
interest has been paid or duly provided or, if no interest has been paid, from the Issue Date.
Cash interest will be computed on the basis of a 360-day year of twelve 30-day months. The Company
shall pay cash interest on overdue principal at the rate borne by the Notes plus 2% per annum, and
it shall pay interest in cash on overdue installments of cash interest at the same rate to the
extent lawful. All such overdue cash interest shall be payable on demand.

2. Method of Payment.

     Subject to the terms and conditions of the Indenture, the Company will make payments in
respect of the principal of, premium, if any, and cash interest on this Note and in respect of
Change of Control Purchase Price and any applicable Make-Whole Premium or Conversion Make-Whole
Payment or payment required under Article 10 of the Indenture to Holders. The Company will pay
cash amounts in money of the United States that at the time of payment is legal tender for payment
of public and private debts. However, the Company may make such cash payments by check payable in
such money. A Holder with an aggregate principal amount in excess of $3,000,000 will be paid by
wire transfer in immediately available funds at the election of such Holder to an account in the
United Stated in accordance with instructions delivered to the Trustee prior to the applicable
Record Date. Any payment required to be made on any day that is not a Business Day will be made on
the next succeeding Business Day.

3. Paying Agent, Conversion Agent and Note Registrar.

     Initially, Wells Fargo Bank, National Association (the “Trustee”), will act as Paying Agent,
Conversion Agent and Note Registrar. The Company may appoint and change any Paying Agent,
Conversion Agent, Note Registrar or co-registrar without notice, other than notice to the Trustee
except that the Company will maintain at least one Paying Agent in the State of New York, City of
New York, Borough of Manhattan, which shall initially be an office or agency of the Trustee. The
Company or any of its Subsidiaries or any of their Affiliates may act as Paying Agent, Conversion
Agent, Note Registrar or co-registrar.

4. Indenture.

     The Company issued the Notes under an Indenture dated as of June 25, 2010 (the “Indenture”),
between the Company and the Trustee. The terms of the Notes include those stated

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in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act
of 1939, as in effect from time to time (the “TIA”). Capitalized terms used herein and not defined
herein have the meanings ascribed thereto in the Indenture. The Notes are subject to all such
terms, and Noteholders are referred to the Indenture and the TIA for a statement of those terms.

     The Notes are general unsecured obligations of the Company limited to $65,000,000 aggregate
principal amount (subject to Section 2.08 of the Indenture).

5. Redemption and Repurchase by the Company at the Option of the Holder.

     The Company, at its option, may redeem the Notes, in whole or in part, at any time prior to
Stated Maturity in accordance with the Indenture on the Redemption Date for a Redemption Price in
cash equal to 100% of the principal amount of the Notes plus any accrued and unpaid interest on the
Notes redeemed to but not including the Redemption Date if the Closing Price of the Company’s
Common Stock equals or exceeds 150% of the Conversion Price for at least 20 Trading Days in any
consecutive 30 Trading Day period ending on the Trading Day immediately preceding the Redemption
Date and all of the Equity Conditions are satisfied (or waived by the Holders of a majority in
aggregate principal amount of the Notes then outstanding).

     If there shall have occurred a Change of Control (subject to certain conditions provided for
in the Indenture), each Holder, at such Holder’s option, shall have the right, in accordance with
the provisions of the Indenture, to require the Company to purchase its Notes (or any portion of
the principal amount hereof that is at least $1,000 or any whole multiple thereof, provided that
the portion of the principal amount of this Note to be outstanding after such purchase is at least
equal to $1,000) at the Change of Control Purchase Price in cash or Preferred Stock, at the
Company’s option (subject, in the case of Preferred Stock, to conditions specified in the
Indenture), plus any accrued and unpaid interest to but not including the Change of Control
Purchase Date.

     If there shall have occurred a Change of Control pursuant to clause (ii) of the definition
thereof, and a Holder surrenders its Notes for purchase, the Company shall pay to such Holder a
Make-Whole Premium in addition to the Change of Control Purchase Price. The Make-Whole Premium
will also be paid to the Holders who convert their Notes on or after the date on which the Company
has given a notice to all Holders in accordance with Section 3.05(d) of the Indenture and on or
before the close of business on the Business Day immediately preceding the Change of Control
Purchase Date.

     The Company may in the case of a Public Acquirer Change of Control, in lieu of paying a
Make-Whole Premium, elect to adjust the Conversion Rate and the related conversion obligation such
that from and after the effective date of a Public Acquirer Change of Control, Holders of the Notes
will be entitled to convert their Notes into a number of shares of Public Acquirer Common Stock by
adjusting the Conversion Rate in effect immediately before the Public Acquirer Change of Control as
set forth in the Indenture.

     A written notice of the Change of Control will be given to the Holders as provided in the
Indenture. To exercise its right to require the Company to purchase all or a portion of its Notes,

A-1-4

 

a Holder must deliver to the Trustee a Change of Control Purchase Notice as provided in the
Indenture.

     Holders have the right to withdraw any Change of Control Purchase Notice by delivering to the
Paying Agent a written notice of withdrawal in accordance with the provisions of the Indenture.

6. Conversion.

     A Holder of a Note may convert it into Common Stock or Preferred Stock of the Company at any
time before the close of business on the Stated Maturity date of the Note; provided, however, that
(i) prior to the Full Conversion Date (and except as provided in clause (ii) below to the extent
the Company has exercised its right to redeem all or any part of the Notes as provided in Article 3
of the Indenture), if a Holder elects to receive Common Stock upon conversion of all or any part of
the Notes, a Holder may exercise its conversion right only to the extent that the number of shares
of Common Stock issuable upon such conversion would not result in a violation of Section 10.04(a)
or Section 10.04(b) of the Indenture or, if a Holder elects to receive shares of Preferred Stock
upon conversion of all or any part of the Notes, such Holder may exercise its conversion right only
to the extent that the number of shares of Preferred Stock issuable upon such conversion would be
convertible as of the Conversion Date into a number of shares of Common Stock that, if issued on
the Conversion Date would not result in a violation of Section 10.04(b) of the Indenture and (ii)
(a) on or after the Full Conversion Date or (b) if the Company has exercised its right to redeem
all or any part of the Notes as provided in Article 3 of the Indenture, a Holder may exercise its
conversion right with respect to the full principal amount of Notes held by such Holder or subject
to the Redemption Notice, as applicable (subject to Section 10.04(a) of the Indenture); provided,
further, that with respect to the foregoing clause (ii), if Shareholder Approval has not been
obtained as of the Conversion Date, the Company will make a cash payment in lieu of any shares of
Common Stock otherwise deliverable upon conversion in excess of the Exchange Cap (or, if such
Holder has elected to receive shares of Preferred Stock upon such conversion, in lieu of any shares
of Preferred Stock otherwise deliverable to such Holder upon conversion that would be convertible
into shares of Common Stock in excess of the Exchange Cap, without regard to any limitation set
forth in Section 6 of the Preferred C of D) (the “Excess Shares”) equal to the product of (1) the
number of Excess Shares multiplied by (2) the average Closing Price per share of the Common Stock
over the ten Trading Day period ending on the Trading Day preceding the Conversion Date.

     A Note in respect of which a Holder has delivered a Change of Control Purchase Notice
exercising the option of such Holder to require the Company to purchase such Note may be converted
only if such notice of exercise is withdrawn in accordance with the terms of the Indenture. In the
case of a Change of Control for which the Holder exercises its right to require the Company to
purchase all of a Note or portion thereof or a redemption of all or a portion of the Notes pursuant
to Section 3.01 of the Indenture, such conversion right in respect of the Note or portion thereof
shall expire at the close of business on the Business Day immediately preceding the Change of
Control Purchase Date or the Redemption Date, as applicable.

     The initial Conversion Price shall be initially equal to $0.60 per share of Common Stock,
which is equal to a Conversion Rate of 1,666.6667 shares of Common Stock per $1,000 principal

A-1-5

 

amount of the Notes, subject to adjustment in certain events described in the Indenture.
Notwithstanding the foregoing, for purposes of any conversion of the principal amount of any Note
(or any portion thereof) into Preferred Stock, other than pursuant to an Automatic Conversion, (X)
the “Conversion Price” shall mean $100 and (Y) the “Conversion Rate” shall mean ten (10) shares of
Preferred Stock per $1,000 principal amount of Note. The Company shall pay a cash adjustment as
provided in the Indenture in lieu of any fractional share of Common Stock.

     To convert a Note, a Holder must (1) complete and manually sign the conversion notice below
(or complete and manually sign a facsimile of such notice) and deliver such notice to the
Conversion Agent, (2) surrender the Note to the Conversion Agent (or, in the case of a beneficial
interest in a Global Note, the Beneficial Holder shall comply with DTC’s procedures for
conversion), (3) furnish appropriate endorsements and transfer documents if required by the
Conversion Agent, the Company or the Trustee in accordance with the Indenture, (4) pay the amount
of interest, if any, the Holder must pay in accordance with the Indenture and (5) pay any transfer
or similar tax, if required.

7. Limitations on Issuance of Common Stock.

     Notwithstanding anything to the contrary contained in the Indenture, a Holder may not convert
all or any portion of such Holder’s Notes into Common Stock to the extent (but only to the extent)
that such Holder and its Affiliates would as a result of such conversion or issuance beneficially
own in excess of the Maximum Ownership Limitation.

8. Automatic Conversion.

     Subject to the terms and conditions of Section 10.05 of the Indenture, on the Automatic
Conversion Date, an aggregate principal amount of the Notes equal to the difference (but not less
than zero (0) of thirty percent (30%)) of the original principal amount of all Notes issued under
the Indenture, minus (ii) any principal amount of Notes that has been repaid, redeemed or
repurchased by the Company, or converted into shares of Common Stock or Preferred Stock by the
Holders thereof, in accordance with the Indenture, shall convert automatically into that number of
fully paid and nonassessable shares of Preferred Stock obtained by multiplying the principal amount
of such portion of the Notes to be so converted by 0.01579 as set forth in the Indenture.

     A written notice of an Automatic Conversion will be given to the Holders as provided in the
Indenture.

9. Conversion Make-Whole Payment.

     If a Holder elects to exercise its conversion rights following the Company’s issuance of a
Redemption Notice in accordance with Section 3.02 of the Indenture, in addition to the shares of
Common Stock or Preferred Stock the Holder is otherwise entitled to receive as provided in the
Indenture, the Company shall pay to such Holder the Conversion Make-Whole Payment on the Redemption
Date. The Company may elect to pay the Conversion Make-Whole Payment in cash or in shares of
Preferred Stock as set forth in the Indenture and subject to the conditions and limitations
contained therein.

A-1-6

 

10. Denominations; Transfer; Exchange.

     The Notes are in fully registered form, without coupons, in denominations of $1,000 of
principal amount and integral multiples of $1,000. A Holder may transfer or exchange Notes in
accordance with the Indenture. The Note Registrar may require a Holder, among other things, to
furnish appropriate endorsements and transfer documents and to pay any taxes and fees required by
law or permitted by the Indenture. The Note Registrar need not transfer or exchange any Notes in
respect of which a Change of Control Purchase Notice has been given and not withdrawn (except, in
the case of a Note to be purchased in part, the portion of the Note not to be purchased).

11. Persons Deemed Owners.

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

12. Unclaimed Money or Notes.

     The Trustee and the Paying Agent shall return to the Company upon written request any money or
Notes held by them for the payment of any amount with respect to the Notes that remains unclaimed
for two years, subject to applicable unclaimed property law. After return to the Company, Holders
entitled to the money or Notes must look to the Company for payment as general creditors unless an
applicable abandoned property law designates another person.

13. Amendment; Waiver.

     Subject to certain exceptions set forth in the Indenture, (i) the Indenture or the Notes may
be amended with the written consent of the Holders of at least a majority in aggregate principal
amount of the Notes at the time outstanding and (ii) certain Defaults or Events of Default may be
waived with the written consent of the Holders of a majority in aggregate principal amount of the
Notes at the time outstanding. Subject to certain exceptions set forth in the Indenture, without
the consent of any Noteholder, the Company and the Trustee may amend the Indenture or the Notes,
among other things, to cure any ambiguity, omission, defect or inconsistency, or to comply with
Article 5 of the Indenture, or to make any change that does not adversely affect the rights of any
Noteholder.

14. Defaults and Remedies.

     Under the Indenture, Events of Default include (1) the Company fails to pay when due the
principal of or premium, if any, on any of the Notes at maturity, upon exercise of a repurchase
right or otherwise; (2) the Company fails to pay an installment of interest on any of the Notes
that continues for 30 days after the date when due; (3) the Company fails to issue and deliver (or
cause to be issued and delivered) shares of Conversion Stock, together with cash in lieu of
fractional shares, when such Conversion Stock or cash in lieu of fractional shares is required to
be delivered upon conversion of a Note (including pursuant to the Automatic Conversion, if any) and
such failure continues for 10 days after the required delivery date; (4) the Company fails to give
notice regarding a Change of Control within the time period specified in the Indenture; (5) the
Company fails to comply with any of its obligations under Section 4.02(a)

A-1-7

 

of the Indenture within thirty (30) days after the date specified for the applicable action
therein; (6) the Company fails to perform or observe any other term, covenant or agreement
contained in the Notes or the Indenture for a period of 60 days after receipt by the Company of a
Notice of Default; (7) (A) the Company or any Significant Subsidiary fails to make any payment by
the end of the applicable grace period, if any, after the final scheduled payment date for such
payment with respect to any indebtedness for borrowed money in an aggregate amount in excess of $5
million or (B) indebtedness for borrowed money of the Company or any Significant Subsidiary in an
aggregate amount in excess of $5 million shall have been accelerated or otherwise declared due and
payable, or required to be prepaid or repurchased (other than by regularly scheduled required
prepayment) prior to the scheduled maturity thereof as a result of a default with respect to such
indebtedness, in either case without such indebtedness referred to in subclause (A) or (B) hereof
having been discharged, cured, waived, rescinded or annulled, for a period of 30 days after receipt
by the Company of a Notice of Default; (8) certain events of bankruptcy, insolvency or
reorganization with respect to the Company or any Significant Subsidiary or any Subsidiaries of the
Company which in the aggregate would constitute a Significant Subsidiary; and (9) any default
occurs under any Permitted Subordinated Indebtedness in excess of $2,000,000 individually or in the
aggregate. If an Event of Default (other than an Event of Default specified in clause (8) above)
occurs and is continuing, the Trustee, or the Holders of at least 25% in aggregate principal amount
of the Notes at the time outstanding, may declare all the Notes to be due and payable immediately.
Certain events of bankruptcy or insolvency are Events of Default which will result in the Notes
becoming due and payable immediately upon the occurrence of such Events of Default.

     Noteholders may not enforce the Indenture or the Notes except as provided in the Indenture.
The Trustee may refuse to enforce the Indenture or the Notes unless it receives reasonable
indemnity or security. Subject to certain limitations, Holders of a majority in aggregate
principal amount of the Notes at the time outstanding may direct the Trustee in its exercise of any
trust or power. The Trustee may withhold from Noteholders notice of any continuing Default (except
a Default in payment of amounts specified in clause (1) or (2) above) if it determines that
withholding notice is in their interests.

15. Trustee Dealings with the Company.

     Subject to certain limitations imposed by the TIA, the Trustee under the Indenture, in its
individual or any other capacity, may become the owner or pledgee of Notes and may otherwise deal
with and collect obligations owed to it by the Company or its Affiliates and may otherwise deal
with the Company or its Affiliates with the same rights it would have if it were not Trustee.

16. 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 Notes or the Indenture or for any claim
based on, in respect of or by reason of such obligations or their creation. By accepting a Note,
each Noteholder waives and releases all such liability. The waiver and release are part of the
consideration for the issue of the Notes.

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17. Authentication.

     This Note shall not be valid until an authorized signatory of the Trustee or an Authenticating
Agent manually signs the Trustee’s Certificate of Authentication on the other side of this Note.

18. Abbreviations.

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

19. GOVERNING LAW.

     THE INDENTURE AND THIS NOTE WILL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF
THE STATE OF NEW YORK.

 

     The Company will furnish to any Noteholder upon written request and without charge a copy of
the Indenture. Requests may be made to:

Gasco Energy, Inc.

8 Inverness Drive

Suite 100

Englewood, CO 80112

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CONVERSION NOTICE

	TO: 	 	GASCO ENERGY, INC.

WELLS FARGO BANK, NATIONAL ASSOCIATION

     The undersigned registered owner of this Note hereby irrevocably exercises the option to
convert this Note, or the portion thereof (which is $1,000 or an integral multiple thereof) below
designated, into shares of Common Stock (or, if expressly elected below, Preferred Stock) of Gasco
Energy, Inc. in accordance with the terms and subject to the limitations of the Indenture referred
to in this Note, and directs that the shares issuable and deliverable upon such conversion,
together with any check in payment for fractional shares and any Conversion Make-Whole Payment or
payment required under Article 10 of the Indenture payable in cash and any Notes representing any
unconverted principal amount hereof, be issued and delivered to the registered holder hereof unless
a different name has been indicated below. If shares or any portion of this Note not converted are
to be issued in the name of a person other than the undersigned, the undersigned will 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 Note. If the
Company has elected to pay the Conversion Make-Whole Payment in Preferred Stock, the undersigned
hereby elects to receive the Conversion Make-Whole Payment in Preferred Stock.

Dated:                                         

	 	 	 	 	 
	 	 	 
	 	 	 
	 	Signature(s) 	 
	 
	 	Signature(s) must be guaranteed by an “eligible
guarantor institution” meeting the requirements of
the Note 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 Note Registrar in addition to, or in substitution
for, STAMP, all in accordance with the Securities
Exchange Act of 1934, as amended. 	 
	 	 	 
	 	 	 
	 	Signature Guarantee 	 
	 	 	 

A-1-10

 

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

	 	 	 	 	 

	 
	 	 	 	 
	 	 	 
	(Name)	 	 
	 
	 	 	 	 
	 	 	 
	(Street Address)	 	 
	 
	 	 	 	 
	 	 	 
	(City, State and Zip Code)	 	 
	 
	 	 	 	 
	 	 	 
	Please print name and address	 	 
	 
	 	 	 	 
	Principal amount to be converted

(if less than all):	 	 
	 
	 	 	 	 
	$
	 	 	 	 
	 

	 

	 	 
	 
	 	 	 	 
	By putting an “X” in the following box, the
undersigned registered owner of this Note hereby
elects a conversion into Preferred Stock. o	 	 
	 
	 	 	 	 
	Social Security or Other Taxpayer 

Identification Number:	 	 

A-1-11

 

CHANGE OF CONTROL PURCHASE NOTICE

	TO: 	 	GASCO ENERGY, INC.

WELLS FARGO BANK, NATIONAL ASSOCIATION

     The undersigned registered owner of this Note hereby irrevocably acknowledges receipt of a
notice from Gasco Energy, Inc. (the “Company”) as to the occurrence of a Change of Control with
respect to the Company and requests and instructs the Company to repay the entire principal amount
of this Note (Certificate No.                     ), or the portion thereof (which is $1,000 or an integral multiple
thereof) below designated, in accordance with the terms of the Indenture referred to in this Note
to the registered holder hereof. If the Company has elected, and is permitted pursuant to the
Indenture referred to in this Notice, to pay the Change of Control Purchase Price and, if
applicable, the Make-Whole Premium, in Preferred Stock, the undersigned hereby elects to receive
the Change of Control Purchase Price in Preferred Stock.

Dated:                                         

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

A-1-12

 

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 Note, and hereby
irrevocably constitutes and appoints
                
                   

attorney to transfer said Note on the books of the Company,
with full power of substitution in the premises.

Dated:                                         

	 	 	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	Signature(s) 	 
	 
	 	Signature(s) must be guaranteed by an “eligible
guarantor institution” meeting the requirements of
the Note 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 Note Registrar in addition to, or in substitution
for, STAMP, all in accordance with the Securities
Exchange Act of 1934, as amended. 	 
	 	 	 
	 	 	 
	 	Signature Guarantee 	 
	 	 	 
	 

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

A-1-13

 

SCHEDULE OF EXCHANGES OF INTERESTS IN THE GLOBAL NOTE*

The following exchanges of a part of this Global Note for an interest in another Global Note or for
a Certificated Note, or exchanges of a part of another Global Note or Certificated Note for an
interest in this Global Note, have been made:

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

 

			
	*	 	[For form of Global Note only]

A-1-14

 

EXHIBIT B

Form of Guaranty

The executed Guaranty is filed as Exhibit 4.2 to the Company’s Current Report on Form 8-K filed
with the Securities and Exchange Commission on June 28, 2010

B-1

 

EXHIBIT C

Subordination Terms

(a)  Definitions.

     “Trustee” means Wells Fargo Bank, National Association, as Trustee under the Indenture
(and any successor trustee thereto); provided that after consummation of any Permitted Refinancing
of the Senior Debt, the term “Trustee” shall refer to the person or entity appointed by the holders
of the Senior Debt as their trustee or agent.

     “Indenture” means that certain Indenture dated as of June 25, 2010 by and among
Company, and the Trustee, as the same may be amended, modified, refinanced, supplemented or
restated from time to time.

     “Company” means Gasco Energy, Inc., a Nevada corporation.

     “Obligor” means Company and any of its Subsidiaries that are obligated on account of
the Senior Debt and/or Subordinated Debt (as defined below), whether as a borrower, guarantor or
otherwise.

     “Old Notes” means the Company’s 5.50% Convertible Senior Notes due October 5, 2011
that remain outstanding on the date of the Indenture after giving effect to the exchange of a
portion of such indebtedness for the Notes under the Indenture.

     “Permitted Refinancing” means any refinancing of the Senior Debt.

     “Permitted Refinancing Loan Documents” means any and all agreements, documents and
instruments executed in connection with a Permitted Refinancing of Senior Debt.

     “Permitted Subordinated Debt Payments” means regularly scheduled, non-accelerated
payments of interest only at a cash pay rate not to exceed 7% per annum and shall include any PIK
Payments without limitation as to rate or amount.

     “PIK Payments” shall mean payments in kind and not in cash on account of the
Subordinated Debt (whether by way of capitalization of interest, fees, expenses or other amounts or
the issuance of additional Subordinated Debt as payment thereof).

     “Proceeding” means any insolvency, bankruptcy, receivership, custodianship,
liquidation, reorganization, assignment for the benefit of creditors or other proceeding for the
liquidation, dissolution or other winding up of any person or any of its properties.

     “Senior Debt” means all of the obligations, liabilities and indebtedness of the
Company and the other Obligors owing to the Noteholders and Beneficial Holders under, in respect of
or on account of the Notes, the Indenture, the Guaranty, the Registration Rights Agreement and/or

C-1

 

Section 6(p) of the Exchange Agreements (collectively, the “Transaction Documents”),
whether for principal, interest, fees, expenses or otherwise and whether now existing or hereafter
arising, including, without limitation, all principal and interest owing under the Notes, all
amounts constituting Make-Whole Premium, Conversion Make-Whole Payment and/or Change of Control
Purchase Price, payments required under Article 10 of the Indenture and Liquidated Damages (as
defined in the Registration Rights Agreement), and all obligations and liabilities incurred with
respect to Permitted Refinancing thereof, in each instance, together with any amendments,
restatements, modifications, renewals, increases or extensions of any thereof, including, without
limitation, interest, fees, costs and expenses accruing thereon or incurred in connection therewith
after the commencement of a Proceeding, without regard to whether or not such interest, fees, costs
and expenses are allowed claims; provided that, unless otherwise consented to in writing by
holders of a majority of the outstanding principal balance of the Subordinated Debt, the Senior
Debt shall not be amended, restated, modified, renewed, increased or extended to (i) increase the
principal amount thereof to more than 110% of the principal amount of the Notes issued on the date
of the Indenture (other than due to the capitalization of interest, fees, expenses or other amounts
owing on account of the Senior Debt and other than due to the issuance of additional Notes in
exchange for Old Notes after the date of the Indenture as contemplated in the Indenture), (ii)
increase any applicable interest rate or scheduled recurring fees with respect to the Senior Debt
by more than 200 basis points, except in connection with the imposition of a default rate of
interest in accordance with the terms of the Indenture (as in effect on the date hereof) or in
connection with the imposition of market rates of interest pursuant to a Permitted Refinancing;
(iii) require the payment of a consent fee (howsoever described) in excess of two percent (2%) per
annum of the outstanding principal amount of the Senior Debt; (iv) add or make more restrictive any
event of default or any covenant with respect to the Senior Debt or make any change to any event of
default or any covenant which would have the effect of making such event of default or covenant
more restrictive, unless a corresponding amendment is offered to the Subordinated Lenders; (v)
change any redemption, put or prepayment provisions of the Senior Debt in a manner adverse to the
Company; (vi) directly prohibit or restrict the payment of principal of, interest on, or other
amounts payable with respect to the Subordinated Debt in a manner that is more restrictive than the
prohibitions and restrictions currently contained in this [                    ] [insert name of
subordinated debt instrument]; (vii) subordinate in right of payment any of the Senior Debt to any
other indebtedness of the Obligors; or (viii) extend the final scheduled maturity date of the
Senior Debt to a date beyond the final scheduled maturity date of the Subordinated Debt.

     “Senior Debt Documents” means, collectively, the Transaction Documents and any and all
agreements, documents and instruments executed by Company or any of its Subsidiaries in connection
therewith, and any Permitted Refinancing Loan Documents, in each case as amended, modified,
refinanced, supplemented or restated from time to time.

     “Senior Default” means the occurrence and continuance of (i) a default in payment (in
cash or, if applicable, shares of Conversion Stock) of all or any part of the principal of, or any
interest (including any Liquidated Damages) or premium (including any Make-Whole Premium or
Conversion Make-Whole Payment) on, or any other amount required pursuant to the Senior Debt
Documents to be paid with respect to, the Senior Debt or any failure of Company to issue and
deliver shares of Common Stock (together with cash in lieu of fractional shares), as and when
required upon any conversion of the Senior Debt (including pursuant to the Automatic

C-2

 

Conversion, if any) (a “Senior Payment Default”) or (ii) any other event of default
under any Senior Debt Document, provided that any cure or grace period with respect to any default
that would with the passage of time otherwise be such an event of default under any Senior Debt
Document that is greater than 15 days shall be deemed to be 15 days for purposes of determining an
event of default under this clause (ii) (“Senior Non-payment Default”).

     “Subordinated Debt” [Note to draft: Update as necessary.]

     “Subordinated Lenders” [Note to draft: Update as necessary.]

     All capitalized terms used herein and not otherwise defined herein shall have the meanings
given such terms in the Indenture.

     (b) Extent of Subordination. All amounts (including all principal, interest, premiums
and other payments) payable hereunder or in respect of any guaranty by any Obligor of the
obligations, liabilities and indebtedness evidenced hereby (collectively, the “Subordinated
Debt”) are and shall be subordinated and junior in right of payment to the prior payment in
full in cash of the Senior Debt to the extent and in the manner set forth herein. [Holder] agrees
and acknowledges that (i) the provisions hereof are, and are intended to be, an inducement to and
in consideration of each holder of Senior Debt, to acquire and hold, or to continue to hold, such
Senior Debt, and such holders of Senior Debt shall be deemed conclusively to have relied on such
subordination provisions in acquiring and holding, or in continuing to hold, such Senior Debt and
the provisions hereof shall be enforceable against Holder by the holders of the Senior Debt. [Note
to Draft: Update defined term for Holder as necessary under the applicable subordinated debt
instrument]

     (c) Payment Suspension. Notwithstanding any provision contained in this
[                    ] [insert name of subordinated debt instrument] to the contrary, and in addition to
any other limitations set forth herein, no payment of principal, interest or any other amount due
with respect to the Subordinated Debt (other than PIK Payments) shall be made or received, and
neither any Obligor nor the Holder shall exercise any right of set-off or recoupment with respect
to the Subordinated Debt, until no amount of Senior Debt remains outstanding; provided, however,
except as provided in the immediately succeeding sentence, the Obligors may make and the Holder may
accept and retain Permitted Subordinated Debt Payments. Notwithstanding the foregoing proviso, if
and so long as a Senior Default has occurred and is continuing, or a Senior Default would be caused
by or otherwise result from the making of any such payment on the Subordinated Debt (such period of
time being referred to as the “Payment Suspension Period”), then, no Obligor shall make,
and the Holder shall not accept and retain from any Obligor or otherwise, directly or indirectly,
in cash or other property (other than PIK Payments), by set-off or in any other manner, payment of
all or any part of the Subordinated Debt that otherwise was permitted to be made hereunder unless
and until the earlier of the date (i) no amount of Senior Debt remains outstanding and (ii) such
Senior Default has been cured by the Obligors or waived in writing by the requisite holders of the
Senior Debt; provided, however, that with respect to a Payment Suspension Period due solely to a
Senior Non-payment Default, the Obligors shall not be prohibited from making, and Holder shall not
be prohibited from receiving, Permitted Subordinated Debt Payments at any time after one hundred
eighty (180) days from the first day Holder is prohibited from receiving Permitted Subordinated
Debt

C-3

 

Payments due to the Senor Non-payment Default(s) giving rise to such Payment Suspension
Period, and from and after such 180th day Obligors may pay, and Holder may receive, any Permitted
Subordinated Debt Payments that otherwise would have been made or due during such Payment
Suspension Period (subject to the imposition of a new Payment Suspension Period as a result of one
or more Senior Payment Defaults, in which case no payments shall be made or received on account of
the Subordinated Debt during such Payment Suspension Period, or due to the existence of new Senior
Non-payment Defaults that were not in existence at the time the prior Payment Suspension Period
commenced (provided in no event shall the Holder be prohibited from receiving Permitted
Subordinated Debt Payments as a result of Senior Non-payment Defaults for more than one hundred
eighty (180) days during any period of three hundred sixty-five (365) consecutive days)).

     (d) Liquidation, Winding Up, etc. In the event of any Proceeding involving an Obligor
or any of its properties or assets:

     (i) the holders of all Senior Debt shall be entitled to receive payment in full in cash
of the Senior Debt before the Holder is entitled to receive any payment upon the
Subordinated Debt, and the holders of Senior Debt shall be entitled to receive for
application in payment thereof any payment or distribution of any kind or character, whether
in cash, property or securities or by set-off or otherwise, which may be payable or
deliverable in any such Proceedings in respect of the Subordinated Debt;

     (ii) any payment or distribution of assets of any Obligor of any kind or character,
whether in cash, property or securities, by set-off or otherwise, to which the Holder would
be entitled pursuant to this [                    ][insert name of subordinated debt instrument] but
for the provisions hereof shall be paid by the liquidating trustee or agent or other person
or entity making such payment or distribution, whether a trustee in bankruptcy, a receiver
or liquidating trustee or otherwise, directly to the Trustee for the benefit of the holders
of Senior Debt until the Senior Debt shall have been paid in full in cash, and Holder
acknowledges and agrees that such payment or distribution may, particularly with respect to
interest on Senior Debt after the commencement of a Proceeding, result in the Holder
receiving less than it would otherwise receive;

     (iii) the Holder hereby irrevocably (x) authorizes, empowers and directs all receivers,
trustees, debtors in possession, liquidators, custodians, conservators and others having
authority in the premises to effect all such payments and deliveries, and the Holder also
irrevocably authorizes, empowers and directs, the Trustee until the Senior Debt shall have
been paid in full in cash, to demand, sue for, collect and receive every such payment or
distribution, and (y) agrees to execute and deliver to the holders of the Senior Debt all
such further instruments confirming the authorization referred to in the foregoing clause
(x); and

     (iv) Holder hereby irrevocably authorizes, empowers and appoints Trustee until the
Senior Debt shall have been paid in full in cash its agent and attorney in fact to execute,
verify, deliver and file such proofs of claim upon the failure of the Holder promptly to do
so (and in any event prior to ten (10) days before the expiration of the

C-4

 

time to file any proof); provided that no holder of Senior Debt shall have any
obligation to execute, verify, deliver and/or file any such proof of claim.

The Senior Debt shall continue to be treated as Senior Debt and the provisions hereof shall
continue to govern the relative rights and priorities of the holders of the Senior Debt and the
Holder even if all or part of the Senior Debt is subordinated, set aside, avoided or disallowed in
connection with any such Proceeding and the provisions hereof shall be reinstated if at any time
any payment of any of the Senior Debt is rescinded or must otherwise be returned by any holder of
the Senior Debt or any agent, designee or nominee of such holder.

     (e) Payment Held in Trust. All payments or distributions upon or with respect to the
Subordinated Debt which are made by or on behalf of an Obligor or received by or on behalf of the
Holder in violation of or contrary to the provisions of subparagraph (b), (c) or (d) above shall be
received in trust for the benefit of the holders of the Senior Debt and shall be paid over upon
demand to Trustee for further distribution to the holders of Senior Debt until the Senior Debt
shall have been paid in full in cash.

     (f) Effectiveness. The provisions hereof shall continue to be effective or be
reinstated, as the case may be, if at any time any payment of any of the Senior Debt is rescinded
or must otherwise be returned by the holders of the Senior Debt for any reason whatsoever
(including, without limitation, the insolvency, bankruptcy or reorganization of an Obligor) all as
though such payment had not been made.

     (g) Rights Not Subordinated. The provisions hereof are for the purpose of defining
the relative rights of the holders of Senior Debt on the one hand and the Holder on the other hand,
and nothing herein shall impair as among the Obligors, the Holder and the other creditors of the
Obligors (other than the holders of the Senior Debt), the Obligors’ obligation to the Holders to
pay the full amount of the Subordinated Debt in accordance with the terms of this
[                    ][insert name of subordinated debt instrument].

     (h) Modification of Senior Debt. The holders of all or any portion of the Senior Debt
may, at any time, in their discretion, renew, amend, refinance, extend, increase or otherwise
modify the terms and provisions of Senior Debt so held (including, without limitation, the terms
and provisions relating to the principal amount outstanding thereunder, the rate of interest
thereof, the payment terms thereof and the provisions thereof regarding default or any other
matter) or exercise (or refrain from exercising) any of their rights under the Senior Debt, all
without notice to or consent from the holder of Subordinated Debt; provided that the Senior
Debt shall not be amended, restated, modified, renewed, increased or extended in violation of the
restrictions set forth in the definition of Senior Debt. No compromise, alteration, amendment,
renewal, restatement, refinancing or other change of, or waiver, consent or other action in respect
of any liability or obligation under or in respect of, any terms, covenants or conditions of Senior
Debt or Senior Debt Documents, whether or not in accordance with the provisions of the Senior Debt,
shall in any way alter or affect any of the subordination provisions hereof.

     (i) No Action. Except as provided in the immediately succeeding sentence, so long as
any Senior Debt remains outstanding, Holder shall not take or continue any action, or exercise any
rights, remedies or powers under the terms of this [                    ][insert name of

C-5

 

subordinated debt instrument], or exercise or continue to exercise any other right or remedy
at law or in equity that Holder might otherwise possess, to collect any amount due and payable in
respect of the Subordinated Debt, the commencement of any action to enforce payment or foreclosure
on any lien or security interest, the filing of any petition in bankruptcy or the taking advantage
of any other insolvency law of any jurisdiction; provided, however, that Holder may take the
foregoing actions if, and only if, one hundred eighty (180) days have passed from the date Trustee
receives a written notice from Holder that a default or event of default has occurred under this
[                    ][insert name of subordinated debt instrument] and the applicable default or event of
default described in such notice shall not have been cured or waived within such period.
Notwithstanding the foregoing, Holder may accelerate the Subordinated Debt in accordance with its
terms (but not receive payments in cash of any accelerated amounts) and file a proof of claim in
any bankruptcy or similar proceeding instituted by another entity and may vote such claim in a
manner not inconsistent with the terms hereof. If Holder shall attempt to enforce, collect or
realize upon any of the Subordinated Debt in violation of the terms hereof, the holders of the
Senior Debt may, by virtue of the terms hereof, restrain any such enforcement, collection or
realization, either in its own name or in the name of any Obligor.

     (j) No Contest. Holder covenants and agrees that it will not, and will not encourage
any other person or entity to, at any time, contest the validity, priority or enforceability of the
provisions hereof, the Senior Debt or the Senior Debt Documents. Holder agrees that the
Subordinated Debt is unsecured and that Holder shall not take any liens or security interests in
any assets or property of any Obligor to secure the Subordinated Debt.

     (k) Governing Law. Notwithstanding anything herein to the contrary, the provisions of
this Section _____
shall be governed by, and construed in accordance with, the internal laws and
decisions of the State of New York, without regard to conflict of laws principles that would
require the application of the laws of any other jurisdiction.

     (l) Amendments. The provisions of this Section ___ may not be amended or modified
without the prior written consent of the holders of a majority of the outstanding principal balance
of the Notes in accordance with the terms of the Indenture.

C-6

 

EXHIBIT D

Form of Preferred C of D

The executed Preferred C of D is filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K
filed with the Securities and Exchange Commission on June 28, 2010

D-1

 

SCHEDULE 4.11

Closing Date Indebtedness

	1.	 	Indebtedness incurred to finance insurance premiums, with respect to:

	 	a.	 	Flatiron Capital corporate property insurance policy

	2.	 	Drilling/completion advances from joint interest owners (cash calls to working interest
owners made in the ordinary course of business)

4.11-1exv4w2

Exhibit 4.2

Execution Version

GUARANTY AGREEMENT

     THIS GUARANTY AGREEMENT (this “Guaranty”), dated as of June 25, 2010, is made by and among
each of the undersigned guarantors and each of the entities that have executed a joinder to this
Guaranty in the form of Exhibit A attached hereto (each such entity is sometimes referred
to herein individually as a “Guarantor” and collectively as the “Guarantors”), in favor of WELLS
FARGO BANK, NATIONAL ASSOCIATION, as Trustee under the Indenture referred to below (in such
capacity, together with its successors and assigns in such capacity, “Beneficiary”), for the
benefit of the Noteholders and Beneficial Holders (each as defined in the Indenture).

WITNESSETH:

     WHEREAS, Gasco Energy, Inc., a Nevada corporation (the “Company”), and Beneficiary are parties
to an Indenture dated as of June 25, 2010 (as the same may be amended, restated, supplemented or
otherwise modified from time to time, the “Indenture”; all capitalized terms used but not defined
herein shall have the meanings assigned to such terms in the Indenture), pursuant to which the
Company has issued Notes to the Noteholders; and

     WHEREAS, each Guarantor is owned, in whole or in part, directly or indirectly, by the Company
and, as such, acknowledges that it will receive direct and indirect economic benefits from the
credit and other accommodations made available by the Noteholders and Beneficial Holders to the
Company, including, without limitation, the agreement of the Noteholders and Beneficial Holders to
consummate the transactions under the Exchange Agreements.

     NOW, THEREFORE, in consideration of the premises and other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, each Guarantor hereby agrees as
follows:

     1. GUARANTY OF OBLIGATIONS. (a) Each Guarantor hereby, absolutely, unconditionally and
irrevocably guarantees to Beneficiary, on behalf of and for the benefit of the Noteholders and
Beneficial Holders (together with each of their successors and assigns, collectively, the
“Guaranteed Parties”), the prompt payment when due, whether at stated maturity, by acceleration or
otherwise, of (i) all of the obligations, liabilities and indebtedness of the Company owing to the
Noteholders and Beneficial Holders under, in respect of or on account of the Notes, the Indenture
and/or Sections 2(c)(xlviii) or 6(p) of the Exchange Agreements (collectively, the “Transaction
Documents”), whether for principal, interest, fees, expenses or otherwise and whether now existing
or hereafter arising, including, without limitation, all principal and interest owing under the
Notes, all amounts constituting Make-Whole Premium, Conversion Make-Whole Payment and/or Change of
Control Purchase Price and payments required under Article 10 of the Indenture, and all renewals,
extensions, modifications, and refinancings thereof, and (ii) all expenses (including reasonable
attorney’s fees and expenses) incurred by any Guaranteed Party in enforcing any of its rights or
the rights of the Guaranteed Parties hereunder or under the Transaction Documents (all such
guaranteed obligations set forth
in clauses (i) and (ii) hereof, collectively, the “Guaranteed Obligations”). Any and all
payments made by any Guarantor hereunder shall be made free and clear of and without deduction for
any set-off, counterclaim or withholdings so that, in each case, the Guaranteed

 

 

Parties shall
receive the full amount that they would otherwise be entitled to receive with respect to the
Guaranteed Obligations.

          (b) Each Guarantor acknowledges and agrees that this Guaranty is a guaranty of payment and not
of collection and that the liability of each Guarantor under this Guaranty shall be immediate and
primary and shall not be contingent upon the exercise or enforcement by any of the Guaranteed
Parties of any remedies such Guaranteed Party may have against the Company or any other guarantor
of the Guaranteed Obligations or other Person.

     2. GUARANTY ABSOLUTE. This Guaranty shall in all respects be an absolute, unconditional and
irrevocable guaranty of payment of the Guaranteed Obligations and each Guarantor guarantees that
the Guaranteed Obligations will be paid strictly in accordance with the terms of the Transaction
Documents under which they arise, regardless of any law, regulation or order now or hereafter in
effect in any jurisdiction affecting any of such terms or the rights of the Guaranteed Parties with
respect thereto. Except as provided in Sections 8 and 9 hereof, the liability of each Guarantor
under this Guaranty shall remain in full force and effect without regard to, and shall not be
released, suspended, discharged, terminated, modified or otherwise affected by, any circumstance or
occurrence whatsoever, including without limitation any of the following (whether or not any
Guarantor consents thereto or has notice thereof): (i) any change in or waiver of the time, place
or manner of payment, or any other term, of any of the Guaranteed Obligations or any of the
Transaction Documents, any waiver of or any renewal, extension, increase, amendment or modification
of or addition, consent or supplement to or deletion from, or any other action or inaction under or
in respect of, any of the Guaranteed Obligations or any of the Transaction Documents or any other
document, instrument or agreement referred to therein or any assignment or transfer of any of the
Guaranteed Obligations or any of the Transaction Documents; (ii) any lack of validity, legality or
enforceability of any of the Guaranteed Obligations or any of the Transaction Documents or any
other document, instrument, or agreement referred to therein or of any assignment or transfer of
any of the foregoing; (iii) any settlement, release or compromise of any of the Guaranteed
Obligations or any of the Transaction Documents or any liability of any other party (including
without limitation any other guarantor) with respect to any of the Guaranteed Obligations or any of
the Transaction Documents, or any subordination of payment of any of the Guaranteed Obligations to
the payment of any other indebtedness, liability or obligation of the Company or its Subsidiaries;
(iv) any bankruptcy, insolvency, reorganization, composition, adjustment, merger, consolidation,
dissolution, liquidation or other like proceeding or occurrence relating to the Company or any of
its Subsidiaries or any other change in title ownership, composition or nature of the Company or
any of its Subsidiaries; (v) any application of sums paid by the Company or any other Person with
respect to any of the Guaranteed Obligations, except to the extent actually applied against the
Guaranteed Obligations, regardless of what other liabilities of the Company or any of its
Subsidiaries remain unpaid; (vi) the failure of any of the Guaranteed Parties to assert any claim
or demand or to enforce any right or remedy against the Company or any other Person (including any
other guarantor of any of the Guaranteed Obligations) under the provisions of any of the
Transaction Documents or otherwise, or any failure of any of the Guaranteed Parties to exercise any
right or remedy against any other guarantor of the Guaranteed Obligations; (vii) any other
act or failure to act by any Guaranteed Party which may adversely affect any Guarantor; or
(viii) any other circumstance which might otherwise constitute a defense against, or a legal or
equitable discharge of, any Guarantor’s liability under this Guaranty.

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     3. GUARANTY CONTINUING; REINSTATEMENT. This Guaranty shall in all respects be a continuing and
irrevocable guaranty of payment and shall remain in full force and effect until all of the
Guaranteed Obligations shall have been indefeasibly paid in full. If claim is ever made upon any
Guaranteed Party for repayment or recovery of any amount received by it in payment or on account of
any of the Guaranteed Obligations, and if any Guaranteed Party repays all or part of said amount by
reason of (i) any judgment, decree or order of any court, administrative body or other governmental
authority having jurisdiction over it or any of its property or (ii) any settlement or compromise
of any such claim effected by any Guaranteed Party with any such claimant (including without
limitation any Borrower or a trustee, conservator or receiver for same), then and in such event
each Guarantor agrees that any such judgment, decree, order, settlement or compromise shall be
binding upon such Guarantor, notwithstanding any revocation or cancellation of this Guaranty or of
any of the Transaction Documents, and such Guarantor shall be and remain liable to the Guaranteed
Parties hereunder for the amount so repaid or recovered to the same extent as if such amount had
never originally been paid to such Guaranteed Party and such Guarantor’s obligations and
liabilities under this Guaranty shall be reinstated to such extent and this Guaranty shall remain
in full force and effect (or shall be reinstated) to such extent. Each Guarantor hereby expressly
waives the benefit of any applicable statute of limitations and agrees that it shall be liable
under this Guaranty whenever any Guaranteed Party seeks to enforce such liability against the
Guarantor or its property.

     4. WAIVERS AND CONSENTS. Each Guarantor hereby waives: (i) notice of acceptance of this
Guaranty by the Guaranteed Parties; (ii) notice of the creation, existence, acquisition, extension,
or renewal of any of the Guaranteed Obligations; (iii) notice of the amount of the Guaranteed
Obligations outstanding from time to time; (iv) notice of any default or event of default under any
of the Transaction Documents or with respect to any of the Guaranteed Obligations or notice of any
other adverse change in the Company’s financial condition or means or ability to pay any of the
Guaranteed Obligations or perform its obligations under any of the Transaction Documents or notice
of any other fact which might increase such Guarantor’s risk hereunder; (v) notice of presentment,
demand, protest, and notice of dishonor or nonpayment as to any instrument; (vi) notice of any
acceleration or other demand for payment of any of the Guaranteed Obligations; and (vii) all other
notices and demands to which such Guarantor might otherwise be entitled with respect to any of the
Guaranteed Obligations or any of the Transaction Documents or with respect to any Guaranteed
Party’s enforcement of its rights and remedies thereunder. Each Guarantor further waives any right
such Guarantor may have, by statute or otherwise, to require the Guaranteed Parties to seek
recourse first against the Company or any other Person as a condition precedent to enforcing such
Guarantor’s liability and obligations under this Guaranty, and each Guarantor further waives any
defense arising by reason of any incapacity or other disability of the Company or by reason of any
other defense which any Person may have on any of the Guaranteed Obligations or under any of the
Transaction Documents other than payment in full of the Guaranteed Obligations. Each Guarantor
consents and agrees that, without notice to or consent by such Guarantor and without affecting or
impairing the liability of such Guarantor under this Guaranty, the Guaranteed Parties
may compromise or settle, extend the period of duration or the time for the payment, discharge
or performance of any of the Guaranteed Obligations or any of the Transaction Documents, or may
refuse to enforce or may release all or any parties to any or all of the Guaranteed Obligations
(including without limitation any other guarantor thereof), or may grant other

3

 

indulgences to
Company or such other parties in respect thereof, or may waive, amend or supplement in any manner
the provisions of any of the Transaction Documents or any other document, instrument or agreement
relating to any of the Guaranteed Obligations (other than this Guaranty), or may refuse to enforce
its rights or may make any compromise or settlement or agreement therefor with any party to any of
the Guaranteed Obligations or any of the Transaction Documents, or with any other Person, or may
release or substitute any one or more of the other endorsers or guarantors of the Guaranteed
Obligations whether parties to this Guaranty or not. Each Guarantor further consents and agrees
that none of the Guaranteed Parties shall be under any obligation to marshal any assets in favor of
such Guarantor or against or in payment of any of the Guaranteed Obligations.

     5. WAIVER OF STAY, EXTENSION OR USURY LAWS. Each Guarantor covenants (to the extent that it
may lawfully do so) that it will not at any time insist upon, or plead, or in any manner whatsoever
claim or take the benefit or advantage of, any stay or extension law or any usury or other law
wherever enacted, now or at any time hereafter in force, which would prohibit or forgive such
Guarantor from paying all or any portion of the Guaranteed Obligations as contemplated herein, or
which may affect the covenants or the performance of this Guaranty; and each Guarantor (to the
extent that it may lawfully do so) hereby expressly waives all benefit or advantage of any such
law, and covenants that it will not hinder, delay or impede the execution of any power herein
granted to the Guaranteed Parties, but will suffer and permit the execution of every such power as
though no such law had been enacted.

     6. GUARANTOR DUE DILIGENCE AND BENEFIT. Each Guarantor is fully aware of the financial
condition, assets and prospects of the Company, and such Guarantor is executing and delivering this
Guaranty based solely upon such Guarantor’s own independent investigation thereof and in no part
upon any representation, warranty or statement of any Guaranteed Party with respect to the
Company’s financial condition, assets or prospects. Each Guarantor is in a position to and hereby
assumes full responsibility for obtaining any and all information concerning the Company’s
financial condition, assets and prospects as such Guarantor may now or hereafter deem material to
such Guarantor’s decision to enter into and become liable under this Guaranty and such Guarantor is
not relying upon, nor does such Guarantor expect any Guaranteed Party to furnish such Guarantor
with, any information which may be now or hereafter in such Guaranteed Party’s possession
concerning the Company’s financial condition, assets or prospects. Each Guarantor hereby knowingly
accepts the full range of risks encompassed within a contract of guaranty, which risks such
Guarantor understands may include, without limitation, the possibility that the Company may incur
additional indebtedness to the Guaranteed Parties for which such Guarantor may be liable hereunder
after the Company’s financial condition or means or ability to pay its lawful debts when they fall
due has deteriorated. Each Guarantor further acknowledges and agrees that any credit or other
financial accommodations now or hereafter extended by the Guaranteed Parties to the Company and any
and all forbearances with respect to the Company or its assets which the Guaranteed Parties may now
or hereafter grant are and will be of direct interest, benefit and advantage to such Guarantor.

     7. GUARANTEED PARTIES’ ACCOUNTS AND RECORDS; APPLICATION OF PAYMENTS. Each Guarantor agrees
that, in the absence of manifest error, any and all books and records relating to the Guaranteed
Obligations which are prepared and maintained by the Guaranteed Parties shall constitute prima
facie evidence of the existence and amount of the

4

 

Guaranteed Obligations. Each Guarantor
irrevocably waives the right to direct the application of any and all payments and collections at
any time hereafter received by any Guaranteed Party from or on behalf of the Company, such
Guarantor or otherwise with respect to any of the Guaranteed Obligations and such Guarantor does
hereby irrevocably agree that the Guaranteed Parties shall have the continuing exclusive right to
apply and re-apply any and all such payments and collections received at any time hereafter against
the Guaranteed Obligations in such manner and order as the Guaranteed Parties may deem advisable,
notwithstanding any contrary entry by any Guaranteed Party upon any of its books and records.

     8. LIMITATION ON GUARANTOR LIABILITY. Each Guarantor and each Guaranteed Party (by its
acceptance of the benefits of this Guaranty) confirms that it is the intention of all such parties
that this Guaranty not constitute a fraudulent transfer or conveyance for purposes of federal or
state law to the extent applicable to this Guaranty. To effectuate the foregoing intention, each
Guarantor and each Guaranteed Party (by its acceptance of the benefits of this Guaranty) hereby
irrevocably agrees that the Guaranteed Obligations guaranteed by such Guarantor will be limited to
the maximum amount that will, after giving effect to such maximum amount and all other contingent
and fixed liabilities of such Guarantor that are relevant under such laws, and after giving effect
to any rights to contribution pursuant to any agreement providing for an equitable contribution
among such Guarantor and the other Guarantors, result in the Guaranteed Obligations of such
Guarantor in respect of such maximum amount not constituting a fraudulent transfer or conveyance.

     9. WHEN GUARANTOR MAY MERGE OR TRANSFER ASSETS. (a) A Guarantor shall not consolidate with,
merge with or convert into any other Person or convey, transfer or lease all or substantially all
of its properties and assets to any Person (other than the Company or another Guarantor), unless:

     (i) either (1) the Guarantor shall be the continuing Person or (2) the Person (if other than
the Guarantor) formed by such consolidation or into which the Guarantor is merged or the Person
which acquires by conveyance, transfer or lease all or substantially all of the properties and
assets of the Guarantor (the “Surviving Entity”) (i) shall be a Person (other than an individual)
organized and validly existing under the laws of the United States or any State thereof or the
District of Columbia and (ii) shall expressly assume, by the execution and delivery to the Trustee
of a Joinder to Guaranty set forth in Exhibit A annexed hereto, all of the Guaranteed
Obligations of the Guarantor under this Guaranty;

     (ii) at the time of such transaction, no Event of Default (as defined in the Indenture) and no
event which, after notice or lapse of time, would become an Event of Default, shall have happened
and be continuing; and

     (iii) the Company shall have delivered to the Beneficiary an Officers’ Certificate and an
Opinion of Counsel (each as defined in the Indenture), each stating that such consolidation,
merger, conveyance, transfer or lease complies with this Guaranty and that all conditions
precedent herein provided for relating to such transaction have been satisfied.

     (b) The Surviving Entity shall succeed to, and be substituted for, and may exercise every
right and power of, the Guarantor under this Guaranty with the same effect as if such

5

 

Surviving
Entity had been named as the Guarantor herein; and thereafter the Guarantor shall be discharged
from all obligations and covenants under this Guaranty.

     10. RELEASE OF LIABILITY OF GUARANTOR. Each Guarantor shall be released from and relieved of
its obligations under this Guaranty (a) concurrently with the payment in full of all of the
Guaranteed Obligations (other than contingent indemnification obligations to the extent no claim
giving rise thereto shall have been asserted) or (b) in connection with a discharge of Company’s
obligations under the Indenture in accordance with Article 8 thereof (other than with respect to
any payment obligations of Company under Article 10 of the Indenture to the extent the same survive
such discharge under Article 8 of the Indenture, which shall remain Guaranteed Obligations
hereunder and for which this Guaranty shall remain in full force and effect until the Notes are
paid in full and no such Guaranteed Obligations remain outstanding).

     11. NOTICES TO GUARANTOR. All notices, demands and other communications hereunder by any
Guaranteed Party to any Guarantor or by any Guarantor to any Guaranteed Party shall be delivered in
the manner provided in Section 11.02 of the Indenture, addressed as follows:

If to any Guarantor:

c/o Gasco Energy, Inc.

8 Inverness Drive, Suite 100

Englewood, CO 80112

Attention: Chief Financial Officer

Facsimile: (303) 483-0011

If to any Guaranteed Party, to Beneficiary at:

Wells Fargo Bank, N.A.

1445 Ross Avenue, 2nd Floor

MAC T5303-022

Dallas, TX 75202

Attention: Corporate Trust Services

Facsimile: (214) 777-4086

     12. COLLECTION COSTS. Each Guarantor shall be liable to each Guaranteed Party for and shall
pay to each Guaranteed Party on demand all reasonable costs (including without limitation
reasonable attorneys’ fees and expenses) incurred by such Guaranteed Party in enforcing performance
of or collecting any payments due under this Guaranty.

     13. ASSIGNMENT AND TRANSFER. This Guaranty shall be binding upon each Guarantor and such
Guarantor’s successors and assigns and shall inure to the benefit of and be enforceable by the
Guaranteed Parties and their respective successors and assigns; provided, however, that no
Guarantor shall be permitted to assign any of its obligations hereunder to any other Person except
in accordance with Section 9 above.

6

 

     14. GOVERNING LAW. This Guaranty shall be governed by the internal laws of the State of New
York.

     15. SUBROGATION AND WAIVER OF CERTAIN RIGHTS. Each Guarantor expressly waives any and all
rights of subrogation, reimbursement, indemnity, exoneration or contribution or any other claim
which such Guarantor may now or hereafter have against the Company, any other guarantor of the
Guaranteed Obligations, or any affiliate thereof or against any property of the Company, any other
guarantor of the Guaranteed Obligations or any affiliate thereof arising from the existence,
performance or enforcement of such Guarantor’s obligations and liabilities under this Guaranty
until such time as the Guaranteed Obligations shall have been paid in full.

     16. MISCELLANEOUS. (a) This Guaranty constitutes the sole and entire agreement between such
Guarantor and the Guaranteed Parties with respect to the subject matter hereof and supersedes and
replaces any and all prior agreements, understandings, negotiations or correspondence between them
with respect thereto.

          (b) Time is of the essence of this Guaranty.

          (c) Words importing the singular number hereunder shall include the plural number and vice
versa and any pronouns used herein shall be deemed to cover all genders.

          (d) Wherever possible, any provision in this Guaranty which is prohibited or unenforceable in
any jurisdiction shall, as to such jurisdiction, be ineffective only to the extent of such
prohibition or unenforceability without invalidating the remaining provisions hereof, and any such
prohibition or unenforceability in any one jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

          (e) No amendment or waiver of any provision of this Guaranty, nor consent to any departure by
any Guarantor therefrom, shall be effective or binding upon the Guaranteed Parties unless such
Guaranteed Parties shall first have given written consent thereto in accordance with the terms of
the Indenture. Any such amendment, waiver or consent which is so granted by the Guaranteed Parties
shall apply only to the specific occasion which is the subject of such amendment, waiver or consent
and shall not apply to the occurrence of the same or any similar event on any future occasion. No
failure on the part of any Guaranteed Party to exercise, and no delay by any Guaranteed Party in
exercising, any right hereunder shall operate as a waiver thereof, nor shall any single or partial
exercise of any right hereunder preclude any other or further exercise thereof or the exercise of
any other right by any Guaranteed Party. No notice to or demand on any Guarantor in any case by
any Guaranteed Party hereunder shall entitle such Guarantor to any further notice or demand in any
similar or other circumstances or constitute a waiver of the rights of any such Guaranteed Party to
take any other or future action in any
circumstances without notice or demand. The remedies provided to the Guaranteed Parties in
this Guaranty are cumulative and not exclusive of any other remedies provided by law.

          (f) This Guaranty may be executed in one or more counterparts and each such counterpart shall
constitute an original and all such counterparts together shall constitute one and the same
instrument. In the event that any signature to this Guaranty or any amendment hereto is

7

 

delivered by facsimile transmission, by e-mail delivery of a “.pdf” format data file or by other electronic
transmission, such signature shall create a valid and binding obligation of the party executing (or
on whose behalf such signature is executed) with the same force and effect as if such facsimile,
“.pdf” or other electronic transmission signature page were an original thereof. At the request of
any party or beneficiary of this Guaranty each Guarantor shall promptly re-execute an original form
of this Guaranty or any amendment hereto and deliver the same to the other party or beneficiary of
this Guaranty. No Person shall raise the use of a facsimile machine, e-mail delivery of a “.pdf”
format data file or other electronic transmission to deliver a signature to this Guaranty or any
amendment hereto or the fact that such signature was transmitted or communicated through the use of
a facsimile machine, e-mail delivery of a “.pdf” format data file or other electronic transmission
as a defense to the formation or enforceability of a contract, and each Person executing this
Guaranty or obtaining the benefits hereof forever waives any such defense.

          (g) All Section headings herein are for convenience of reference only and shall not limit or
otherwise affect the meaning or interpretation of the provisions of this Guaranty.

     17. JOINT AND SEVERAL OBLIGATIONS. The obligations, covenants and agreements of each
Guarantor hereunder shall be the joint and several obligations, covenants and agreements of each
Guarantor.

     18. ADDITIONAL GUARANTORS. Each Subsidiary of the Company that is required to enter into this
Guaranty as a Guarantor after the date hereof pursuant to the Indenture shall, upon execution and
delivery by Beneficiary and such Subsidiary of the Joinder to Guaranty set forth in Exhibit
A annexed hereto, become a Guarantor hereunder with the same force and effect as if originally
named as a Guarantor herein. The execution and delivery of the Joinder to Guaranty shall not
require the consent of any other Guarantor hereunder. The rights and obligations of each Guarantor
hereunder shall remain in full force and effect notwithstanding the addition of any new Guarantor
as a party to this Guaranty.

     19. REPRESENTATIONS, WARRANTIES AND COVENANTS. In addition to the covenants contained herein,
each Guarantor agrees that it shall comply with all of the covenants set forth in Article 4 of the
Indenture that are applicable to the Subsidiaries of the Company as if by the terms thereof such
provisions applied to such Guarantor directly and were set forth herein verbatim. The execution,
delivery and performance by each Guarantor of this Guaranty are within its powers, have been duly
authorized by all necessary action pursuant to its constituent documents, require no further action
by or in respect of, or filing with, any governmental body, agency or official and do not violate,
conflict with or cause a breach or a default under any provision of applicable law or regulation or
of the constituent documents of such Guarantor or of any agreement, judgment, injunction, order,
decree or other instrument binding upon it or any of
its property. This Guaranty constitutes the valid and binding obligation of each Guarantor,
enforceable against such Guarantor in accordance with its terms, except as enforceability may be
limited by applicable bankruptcy, insolvency, or similar laws relating to the enforcement of
creditor’s rights generally and by general equitable principles.

[rest of page intentionally left blank; signature page follows]

8

 

     IN WITNESS WHEREOF, each Guarantor has caused this Guaranty to be duly executed and delivered
by its duly authorized officers as of the date first above written.

	 	 	 	 	 
	 	GUARANTORS:

GASCO PRODUCTION COMPANY,

a Delaware corporation

 	 
	 	By:  	/s/ W. King Grant
 	 
	 	 	Name:  	W. King Grant 	 
	 	 	Title:  	President and Chief Financial
Officer 	 
	 

	 	 	 	 	 
	 	RIVERBEND GAS GATHERING, LLC,
 a Nevada limited
liability company

 	 
	 	By:  	Gasco Energy, Inc.
 	 
	 	 	Its Managing Member 	 
	 	 	 	 
	 
	 	 	 
	 	By:  	                 /s/ W. King Grant
 	 
	 	 	Name:  	W. King Grant 	 
	 	 	Title:  	President and Chief Financial
Officer 	 
	 

	 	 	 	 	 
	 	MYTON OILFIELD RENTALS, LLC,

a Nevada limited liability company

 	 
	 	By:  	Gasco Energy, Inc.
 	 
	 	 	Its Managing Member 	 
	 	 	 	 
	 
	 	 	 
	 	By:  	                 /s/ W. King Grant
 	 
	 	 	Name:  	W. King Grant 	 
	 	 	Title:  	President and Chief Financial
Officer 	 

 

 

	 	 	 	 	 

EXHIBIT A

FORM OF JOINDER

JOINDER TO GUARANTY

     The undersigned,                                          a                                         , hereby joins in the execution of that
certain Guaranty Agreement dated as of June 25, 2010 (the “Guaranty”), by Gasco Production Company,
Riverbend Gas Gathering, LLC and Myton Oilfield Rentals, LLC and each other Person that becomes a
Guarantor thereunder after the date and pursuant to the terms thereof, to and in favor of WELLS
FARGO BANK, NATIONAL ASSOCIATION, as Trustee under the Indenture referred to therein, together with
its successors and assigns in such capacity, for the benefit of the Guaranteed Parties (as defined
in such Indenture). By executing this Joinder to Guaranty, the undersigned hereby agrees that it
is a Guarantor thereunder with the same force and effect as if originally named therein as a
Guarantor. The undersigned agrees to be bound by all of the terms and provisions of the Guaranty
and represents and warrants that the representations and warranties set forth in the Guaranty are,
with respect to the undersigned, true and correct as of the date hereof. Each reference to a
Guarantor in the Guaranty shall be deemed to include the undersigned.

     In Witness Whereof, the undersigned has executed this Joinder to Guaranty this ______ day of
                    , ____.

[NEW GUARANTOR]

	 	 	 	 	 
	 	 	 
	By:  	
 	 	 
	 	Its: 	 	 	 
	 	 	 	 
	 

Acknowledged:

WELLS FARGO BANK, NATIONAL ASSOCIATION,

as Trustee

	 	 	 	 	 
	 	 	 
	By:  	
 	 	 
	 	Its:

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