Magma Design Automation (LAVA) 8-K Entry into a Material Definitive Agreement

Exhibit 10.3

MAGMA DESIGN AUTOMATION, INC.

2.00% CONVERTIBLE SENIOR NOTES DUE MAY 15, 2010

INDENTURE

DATED AS OF MARCH 5, 2007

U.S. BANK NATIONAL ASSOCIATION,

AS TRUSTEE

TABLE OF CONTENTS

		Page
ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE		1
SECTION 1.1.	DEFINITIONS	1
SECTION 1.2.	OTHER DEFINITIONS	7
SECTION 1.3.	TRUST INDENTURE ACT PROVISIONS	8
SECTION 1.4.	RULES OF CONSTRUCTION	8
ARTICLE 2 THE SECURITIES		9
SECTION 2.1.	FORM AND DATING	9
SECTION 2.2.	EXECUTION AND AUTHENTICATION	10
SECTION 2.3.	REGISTRAR, PAYING AGENT AND CONVERSION AGENT	11
SECTION 2.4.	PAYING AGENT TO HOLD MONEY IN TRUST	11
SECTION 2.5.	HOLDERS LISTS	12
SECTION 2.6.	TRANSFER AND EXCHANGE	12
SECTION 2.7.	REPLACEMENT SECURITIES	13
SECTION 2.8.	OUTSTANDING SECURITIES	13
SECTION 2.9.	TREASURY SECURITIES	14
SECTION 2.10.	TEMPORARY SECURITIES	14
SECTION 2.11.	CANCELLATION	14
SECTION 2.12.	LEGEND; ADDITIONAL TRANSFER AND EXCHANGE REQUIREMENTS	15
SECTION 2.13.	CUSIP NUMBERS	17
SECTION 2.14.	WITHHOLDING TAXES	17
ARTICLE 3 PURCHASE OF SECURITIES AT OPTION OF THE HOLDER UPON DESIGNATED EVENT		17
SECTION 3.1.	[Reserved]	17
SECTION 3.2.	PURCHASE OF SECURITIES AT OPTION OF THE HOLDER UPON DESIGNATED EVENT	17
SECTION 3.3.	EFFECT OF DESIGNATED EVENT PURCHASE NOTICE	20
SECTION 3.4.	DEPOSIT OF DESIGNATED EVENT PURCHASE PRICE	21
SECTION 3.5.	SECURITIES PURCHASED IN PART	21
SECTION 3.6.	COMPLIANCE WITH SECURITIES LAWS UPON PURCHASE OF SECURITIES	21
SECTION 3.7.	REPAYMENT TO THE COMPANY	21
ARTICLE 4 CONVERSION		22
SECTION 4.1.	CONVERSION PRIVILEGE	22
SECTION 4.2.	CONVERSION PROCEDURE	25
SECTION 4.3.	FRACTIONAL SHARES	27
SECTION 4.4.	TAXES ON CONVERSION	27
SECTION 4.5.	COMPANY TO PROVIDE STOCK	27
SECTION 4.6.	ADJUSTMENT OF CONVERSION PRICE	28
SECTION 4.7.	NO ADJUSTMENT	31
SECTION 4.8.	ADJUSTMENT FOR TAX PURPOSES	32

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TABLE OF CONTENTS

(continued)

		Page
SECTION 4.9.	NOTICE OF ADJUSTMENT	32
SECTION 4.10.	NOTICE OF CERTAIN TRANSACTIONS	32
SECTION 4.11.	EFFECT OF RECLASSIFICATION, CONSOLIDATION, MERGER OR SALE ON CONVERSION PRIVILEGE	33
SECTION 4.12.	TRUSTEE’S DISCLAIMER	34
SECTION 4.13.	VOLUNTARY REDUCTION	34
SECTION 4.14.	PAYMENT OF CASH IN LIEU OF COMMON STOCK	34
ARTICLE 5 RANKING		35
SECTION 5.1.	DESIGNATED SENIOR INDEBTEDNESS	35
ARTICLE 6 COVENANTS		35
SECTION 6.1.	PAYMENT OF SECURITIES	35
SECTION 6.2.	SEC REPORTS	36
SECTION 6.3.	COMPLIANCE CERTIFICATES	36
SECTION 6.4.	FURTHER INSTRUMENTS AND ACTS	36
SECTION 6.5.	MAINTENANCE OF CORPORATE EXISTENCE	36
SECTION 6.6.	RULE 144A INFORMATION REQUIREMENT	37
SECTION 6.7.	STAY, EXTENSION AND USURY LAWS	37
SECTION 6.8.	PAYMENT OF ADDITIONAL INTEREST AND EXTENSION FEE	37
ARTICLE 7 CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE		38
SECTION 7.1.	COMPANY MAY CONSOLIDATE, ETC, ONLY ON CERTAIN TERMS	38
SECTION 7.2.	SUCCESSOR SUBSTITUTED	38
ARTICLE 8 DEFAULT AND REMEDIES		39
SECTION 8.1.	EVENTS OF DEFAULT	39
SECTION 8.2.	ACCELERATION	41
SECTION 8.3.	OTHER REMEDIES	42
SECTION 8.4.	WAIVER OF DEFAULTS AND EVENTS OF DEFAULT	42
SECTION 8.5.	CONTROL BY MAJORITY	42
SECTION 8.6.	LIMITATIONS ON SUITS	42
SECTION 8.7.	RIGHTS OF HOLDERS TO RECEIVE PAYMENT AND TO CONVERT	43
SECTION 8.8.	COLLECTION SUIT BY TRUSTEE	43
SECTION 8.9.	TRUSTEE MAY FILE PROOFS OF CLAIM	43
SECTION 8.10.	PRIORITIES	44
SECTION 8.11.	UNDERTAKING FOR COSTS	44
ARTICLE 9 TRUSTEE		44
SECTION 9.1.	DUTIES OF TRUSTEE	44
SECTION 9.2.	RIGHTS OF TRUSTEE	45
SECTION 9.3.	INDIVIDUAL RIGHTS OF TRUSTEE	46
SECTION 9.4.	TRUSTEE’S DISCLAIMER	46

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TABLE OF CONTENTS

(continued)

		Page
SECTION 9.5.	NOTICE OF DEFAULT OR EVENTS OF DEFAULT	46
SECTION 9.6.	REPORTS BY TRUSTEE TO HOLDERS	47
SECTION 9.7.	COMPENSATION AND INDEMNITY	47
SECTION 9.8.	REPLACEMENT OF TRUSTEE	48
SECTION 9.9.	SUCCESSOR TRUSTEE BY MERGER, ETC	48
SECTION 9.10.	ELIGIBILITY; DISQUALIFICATION	49
SECTION 9.11.	PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY	49
ARTICLE 10 SATISFACTION AND DISCHARGE OF INDENTURE		49
SECTION 10.1.	SATISFACTION AND DISCHARGE OF INDENTURE	49
SECTION 10.2.	APPLICATION OF TRUST MONEY	50
SECTION 10.3.	REPAYMENT TO COMPANY	50
SECTION 10.4.	REINSTATEMENT	50
ARTICLE 11 AMENDMENTS, SUPPLEMENTS AND WAIVERS		51
SECTION 11.1.	WITHOUT CONSENT OF HOLDERS	51
SECTION 11.2.	WITH CONSENT OF HOLDERS	51
SECTION 11.3.	COMPLIANCE WITH TRUST INDENTURE ACT	52
SECTION 11.4.	REVOCATION AND EFFECT OF CONSENTS	52
SECTION 11.5.	NOTATION ON OR EXCHANGE OF SECURITIES	53
SECTION 11.6.	TRUSTEE TO SIGN AMENDMENTS, ETC	53
SECTION 11.7.	EFFECT OF SUPPLEMENTAL INDENTURES	53
ARTICLE 12 MISCELLANEOUS		53
SECTION 12.1.	TRUST INDENTURE ACT CONTROLS	53
SECTION 12.2.	NOTICES	53
SECTION 12.3.	COMMUNICATIONS BY HOLDERS WITH OTHER HOLDERS	55
SECTION 12.4.	CERTIFICATE AND OPINION AS TO CONDITIONS PRECEDENT	55
SECTION 12.5.	RECORD DATE FOR VOTE OR CONSENT OF HOLDERS	55
SECTION 12.6.	RULES BY TRUSTEE, PAYING AGENT, REGISTRAR AND CONVERSION AGENT	56
SECTION 12.7.	LEGAL HOLIDAYS	56
SECTION 12.8.	GOVERNING LAW	56
SECTION 12.9.	NO ADVERSE INTERPRETATION OF OTHER AGREEMENTS	56
SECTION 12.10.	NO RECOURSE AGAINST OTHERS	56
SECTION 12.11.	SUCCESSORS	56
SECTION 12.12.	MULTIPLE COUNTERPARTS	56
SECTION 12.13.	SEPARABILITY	57
SECTION 12.14.	TABLE OF CONTENTS, HEADINGS, ETC	57
ARTICLE 13 REDEMPTION OF SECURITIES		57
SECTION 13.1.	RIGHT OF REDEMPTION	57
SECTION 13.2.	APPLICABILITY OF ARTICLE	57
SECTION 13.3.	ELECTION TO REDEEM; NOTICE TO TRUSTEE	57
SECTION 13.4.	SELECTION BY TRUSTEE OF SECURITIES TO BE REDEEMED	58

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TABLE OF CONTENTS

(continued)

		Page
SECTION 13.5.	NOTICE OF REDEMPTION	58
SECTION 13.6.	DEPOSIT OF REDEMPTION PRICE	59
SECTION 13.7.	SECURITIES PAYABLE ON REDEMPTION DATE	59
SECTION 13.8.	CONVERSION ARRANGEMENT ON CALL FOR REDEMPTION	60

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CROSS-REFERENCE TABLE*

TIA SECTION		INDENTURE SECTION
Section	310(a)(1)	9.10
	(a)(2)	9.10
	(a)(3)	N.A.**
	(a)(4)	N.A.
	(a)(5)	9.10
	(b)	9.8; 9.10
	(c)	N.A.
Section	311(a)	9.11
	(b)	9.11
	(c)	N.A.
Section	312(a)	2.5
	(b)	12.3
	(c)	12.3
Section	313(a)	9.6
	(b)(1)	N.A.
	(b)(2)	9.6
	(c)	9.6; 12.2
	(d)	9.6
Section	314(a)	6.2; 6.4; 12.2
	(b)	N.A.
	(c)(1)	12.4(a)
	(c)(2)	12.4(a)
	(c)(3)	N.A.
	(d)	N.A.
	(e)	12.4(b)
	(f)	N.A.
Section	315(a)	9.1(b)
	(b)	9.5; 12.2
	(c)	9.1(a)
	(d)	9.1(c)
	(e)	8.11
Section	316(a)(last sentence)	2.9
	(a)(1)(A)	8.5
	(a)(1)(B)	8.4
	(a)(2)	N.A.
	(b)	8.7
	(c)	12.5
Section	317(a)(1)	8.8
	(a)(2)	8.9
	(b)	2.4

* This Cross-Reference Table shall not, for any purpose, be deemed a part of this Indenture.

** N.A. means Not Applicable.

THIS INDENTURE dated as of March 5, 2007 is between Magma Design Automation, Inc., a corporation duly organized under the laws of the State of Delaware (the “Company”), and U.S. Bank National Association, a national banking association organized and existing under the laws of the United States, as Trustee (the “Trustee”).

In consideration of the premises and the purchase of the Securities by the Holders thereof, both parties agree as follows for the benefit of the other and for the equal and ratable benefit of the registered Holders of the Company’s 2.00% Convertible Senior Notes due May 15, 2010.

ARTICLE 1

DEFINITIONS AND INCORPORATION BY REFERENCE

SECTION 1.1. DEFINITIONS.

“Additional Interest” has the meaning specified in Section 5 of the Registration Rights Agreement. All references herein to interest accrued or payable as of any date shall include any Additional Interest accrued or payable as of such date as provided in the Registration Rights Agreement.

“Additional Securities” means any Securities (other than the Initial Securities) issued pursuant to this Indenture in accordance with Section 2.2 hereof, as part of the same series and with the same CUSIP number as the Initial Securities.

“Affiliate” means, with respect to any specified person, any other person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified person. For the purposes of this definition, “control” when used with respect to any person means the power to direct the management and policies of such person, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have meanings correlative to the foregoing.

“Agent” means any Registrar, Paying Agent or Conversion Agent.

“Applicable Procedures” means, with respect to any transfer or exchange of beneficial ownership interests in a Global Security, the rules and procedures of the Depositary, in each case to the extent applicable to such transfer or exchange.

“Bid Solicitation Agent” means U.S. Bank National Association until the Company selects another bank, trust company or similar fiduciary agent, if any, to serve as the Bid Solicitation Agent.

“Board of Directors” means either the board of directors of the Company or any committee of the Board of Directors authorized to act for it with respect to this Indenture.

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

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

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“Cash” or “cash” means such coin or currency of the United States as at any time of payment is legal tender for the payment of public and private debts.

“Certificated Security” means a Security that is in substantially the form attached hereto asExhibit A and that does not include the information or the schedule called for by footnotes 1, 3 and 4 thereof.

“Common Stock” means the common stock of the Company, $0.0001 par value per share, as it exists on the date of this Indenture and any shares of any class or classes of capital stock of the Company resulting from any reclassification or reclassifications thereof and which have no preference in respect of dividends or of amounts payable in the event of any voluntary or involuntary liquidation, dissolution or winding-up of the Company and which are not subject to redemption by the Company;provided,however, that if at any time there shall be more than one such resulting class, the shares of each such class then so issuable on conversion of Securities shall be substantially in the proportion which the total number of shares of such class resulting from all such reclassifications bears to the total number of shares of all such classes resulting from all such reclassifications.

“Company” means the party named as such in the first paragraph of this Indenture until a successor replaces it pursuant to the applicable provisions of this Indenture, and thereafter “Company” shall mean such successor Company.

“Continuing Directors” means, as of any date of determination, any individual who on the date of this Indenture was a member of the Board of Directors, together with any directors whose election, or, solely to fill the vacancy of a Continuing Director, appointment by the Board of Directors or whose nomination for election by the Company’s stockholders is duly approved by the vote of a majority of the directors on the Board of Directors (or such lesser number comprising a majority of a nominating committee if authority for such nominations or elections has been delegated to a nominating committee whose authority and composition have been approved by at least a majority of the directors who were Continuing Directors at the time such committee was formed) then still in office who were either directors on the date of this Indenture or whose election, appointment (in the case of a vacancy of a Continuing Director), or nomination for election was previously approved by a majority of the Continuing Directors, either by specific vote or by approval of the proxy statement issued by the Company in which such individual is named as a nominee for director.

“Conversion Rate” per $1,000 principal amount of Securities as of any day means the result obtained by dividing (i) $1,000 by (ii) the then applicable Conversion Price, rounded to the nearest ten-thousandth.

“Conversion Reference Period” means:

(i) for Securities that are converted during the 60 days prior to, but excluding, any Designated Event Purchase Date or the Final Maturity Date of the Securities, the 20 consecutive Trading Days beginning on the third Trading Day following the relevant Designated Event Purchase Date or the Final Maturity Date; and

(ii) in all other instances, the 20 consecutive Trading Days beginning on the third Trading Day following the date of conversion.

“Conversion Value” means, for each $1,000 principal amount of Securities, the average of the Daily Conversion Values for each of the 20 consecutive Trading Days of the Conversion Reference Period.

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“Corporate Trust Office” means the principal office of the Trustee at which at any particular time its corporate trust business shall be administered which office at the date of the execution of this Indenture is located at 633 West Fifth St., 24th Floor, Los Angeles, CA 90071, Attention: Corporate Trust Services (Magma Design Automation, Inc. — 2.00% Convertible Senior Notes due May 15, 2010) or at any other time at such other address as the Trustee may designate from time to time by notice to the Company.

“Daily Conversion Value” means, with respect to any Trading Day, the product of (1) the applicable Conversion Rate and (2) the Volume Weighted Average Price on such Trading Day.

“Daily Share Amount” means, for each Trading Day of the Conversion Reference Period and for each $1,000 principal amount of Securities surrendered for conversion, a number of shares (but in no event less than zero) equal to (i) the amount of (a) the Volume Weighted Average Price for such Trading Day multiplied by the applicable Conversion Rate, less (b) $1,000; divided by (ii) the Volume Weighted Average Price for such Trading Day multiplied by 20.

“Default” or “default” means, when used with respect to the Securities, any event which is or, after notice or passage of time or both, would be an Event of Default.

“Designated Event” means the occurrence of a Change of Control.

“Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, as in effect from time to time.

“Final Maturity Date” means May 15, 2010.

“GAAP” means generally accepted accounting principles in the United States of America as in effect as of the date of this Indenture, including those set forth in (1) the opinions and pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants, (2) the statements and pronouncements of the Financial Accounting Standards Board, (3) such other statements by such other entity as approved by a significant segment of the accounting profession and (4) the rules and regulations of the SEC governing the inclusion of financial statements (including pro forma financial statements) in registration statements filed under the Securities Act and periodic reports required to be filed pursuant to Section 13 of the Exchange Act, including opinions and pronouncements in staff accounting bulletins and similar written statements from the accounting staff of the SEC.

“Global Security” means a permanent Global Security that is in substantially the form attached hereto asExhibit A and that includes the information and schedule called for by footnotes 1, 3 and 4 thereof and which is deposited with the Depositary or its custodian and registered in the name of the Depositary or its nominee.

“Holder” or “Securityholder” means the person in whose name a Security is registered on the Primary Registrar’s books.

“Indenture” means this Indenture as amended or supplemented from time to time pursuant to the terms of this Indenture.

“Initial Securities” means Securities in an aggregate principal amount of $47,439,000 initially issued under this Indenture.

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“Interest Payment Date” means May 15 and November 15 of each year, commencing May 15, 2007;provided,however, that, except for an Interest Payment Date coinciding with the Final Maturity Date or earlier Redemption Date or Designated Event Purchase Date, if any Interest Payment Date is a day that is not a Business Day, that Interest Payment Date will be postponed to the next succeeding Business Day.

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

“Officers’ Certificate” means a certificate signed by two Officers;provided,however, that for purposes of Sections 4.11 and 6.3, “Officers’ Certificate” means a certificate signed by the principal executive officer, principal financial officer or principal accounting officer of the Company and by one other Officer.

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

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

“Principal” or “principal” of a debt security, including the Securities, means the principal of the security plus, when appropriate, the premium, if any, on the security.

“Record Date” for interest payable in respect of any Security on any Interest Payment Date means the May 1 or November 1 (whether or not a Business Day), as the case may be, immediately preceding such Interest Payment Date.

“Redemption Date, when used with respect to any Security to be redeemed, means the date fixed for such redemption by or pursuant to this Indenture.

“Registration Rights Agreement” means the Registration Rights Agreement dated, as of March 5, 2007, among the Company and the initial purchasers party thereto.

“Regulation S” means Regulation S under the Securities Act or any successor for such Rule.

“Restricted Global Security” means a Global Security that is a Restricted Security.

“Restricted Security” means a Security required to bear the restricted legend set forth in the form of Security set forth inExhibit A of this Indenture.

“Rule 144” means Rule 144 under the Securities Act or any successor to such Rule.

“Rule 144A” means Rule 144A under the Securities Act or any successor to such Rule.

“SEC” means the Securities and Exchange Commission.

“Securities” means the 2.00% Convertible Senior Notes due May 15, 2010 or any of them (each, a “Security”), as amended or supplemented from time to time, that are issued under this Indenture. The Initial Securities and the Additional Securities shall be treated as a single class and have the same CUSIP number for purposes of this Indenture.

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

“Securities Custodian” means the Trustee, as custodian with respect to the Securities in global form, or any successor thereto.

“Shelf Registration Statement” has the meaning given such term in the Registration Rights Agreement.

“Significant Subsidiary” means, in respect of any Person, a Subsidiary of such Person that would constitute a “significant subsidiary” as such term is defined under Rule 1-02 of Regulation S-X under the Securities Act and the Exchange Act.

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

“TIA” means the Trust Indenture Act of 1939, as amended, and the rules and regulations thereunder as in effect on the date of this Indenture, except as provided in Section 11.3, and except to the extent any amendment to the Trust Indenture Act expressly provides for application of the Trust Indenture Act as in effect on another date.

“Trading Day” means a day during which trading in securities generally occurs on the Nasdaq Global Market (or, if the Common Stock is not listed on the Nasdaq Global Market, on the principal market on which the Common Stock is then traded), other than a day on which a half hour or more suspension of or limitation on trading is imposed that affects either the Nasdaq Global Market (or, if applicable, such other market) in its entirety or only the shares of Common Stock (by reason of movements in price exceeding limits permitted by the relevant market on which the shares are traded or otherwise) or on which the Nasdaq Global Market (or, if applicable, such other market) cannot clear the transfer of shares due to an event beyond the Company’s control.

“Trading Price” of the Securities on any date of determination means the average of the secondary market bid quotations per $1,000 principal amount of Securities obtained by the Bid Solicitation Agent for $5,000,000 principal amount of Securities at approximately 3:30 p.m., New York City time, on such determination date from three nationally recognized securities dealers the Company selects; provided that if three such bids cannot reasonably be obtained by the Bid Solicitation Agent, but two such bids are obtained, then the average of the two bids shall be used, and if only one such bid can reasonably be obtained by the Bid Solicitation Agent, that one bid shall be used. The Company will provide prompt written notice to the Bid Solicitation Agent identifying the three nationally recognized security dealers selected by the Company. If the Bid Solicitation Agent cannot reasonably obtain at least one bid for $5,000,000 principal amount of Securities from a nationally recognized securities dealer or if, in the reasonable, good faith judgment of the Company, the bid that the Bid Solicitation Agent has obtained is not indicative of the value of the Securities,

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then for purposes of determining whether the condition to conversion of the Securities set forth in Section 4.1(a)(2) has been satisfied, the Trading Price per $1,000 principal amount of Securities will be deemed to be less than 98% of the product of the Volume Weighted Average Price of the Common Stock and the Conversion Rate per $1,000 principal amount of Securities.

“Trustee” means the party named as such in the first paragraph of this Indenture until a successor replaces it in accordance with the provisions of this Indenture, and thereafter means the successor.

“Trust Officer” means, with respect to the Trustee, any officer assigned to the Corporate Trust Office, and also, with respect to a particular matter, any other officer to whom such matter is referred because of such officer’s knowledge of and familiarity with the particular subject.

“Vice President” when used with respect to the Company or the Trustee, means any vice president, whether or not designated by a number or a word or words added before or after the title “vice president.”

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

“Voting Stock” of a Person means all classes of Capital Stock or other interests (including partnership interests) of such Person then outstanding and normally entitled (without regard to the occurrence of any contingency) to vote in the election of directors, managers or trustees thereof.

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SECTION 1.2. OTHER DEFINITIONS.

Term	Defined in Section
“Agent Members”	2.1(b)
“Bankruptcy Law”	8.1
“Cash Percentage”	4.14(b)
“Change in Control”	3.2(a)
“Closing Price”	4.6(f)
“Company Order”	2.2
“Conversion Agent”	2.3
“Conversion Date”	4.2
“Conversion Price”	4.6
“Conversion Trigger Price”	4.1(a)(1)
“Current Market Price”	4.6(f)
“CUSIP”	2.13
“Custodian”	8.1
“Depositary”	2.1(a)
“Designated Event Date”	4.1(c)
“Designated Event Purchase Date”	3.2(a)
“Designated Event Purchase Notice”	3.2(c)
“Designated Event Purchase Price”	3.2(a)
“Determination Date”	4.6(c)
“Distribution Notice”	4.1(b)
“DTC”	2.1(a)
“Event of Default”	8.1
“Expiration Date”	4.6(e)
“Expiration Time”	4.6(e)
“Extension Fee”	8.1
“Filing Failure”	8.1(8)
“Instrument”	8.1(6)
“Legal Holiday”	12.7
“Legend”	2.12(a)
“Notice of Default”	8.1(7)
“Paying Agent”	2.3
“Primary Registrar”	2.3
“Purchased Shares”	4.6(e)
“Purchasers”	13.8
“QIB”	2.1(a)
“Redemption Price”	13.1
“Registrar”	2.3
“Rights”	4.6(d)
“Rights Plan”	4.6(c)
“Trigger Event”	4.6(c)
“Triggering Distribution”	4.6(d)
“Unissued Shares”	3.2(a)

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SECTION 1.3. TRUST INDENTURE ACT PROVISIONS.

Whenever this Indenture refers to a provision of the TIA, that provision is incorporated by reference in and made a part of this Indenture. The Indenture shall also include those provisions of the TIA required to be included herein by the provisions of the Trust Indenture Reform Act of 1990. The following TIA terms used in this Indenture have the following meanings:

“indenture securities” means the Securities;

“indenture security holder” means a Securityholder;

“indenture to be qualified” means this Indenture;

“indenture trustee” or “institutional trustee” means the Trustee; and “obligor” on the indenture securities means the Company or any other obligor on the Securities.

All other terms used in this Indenture that are defined in the TIA, defined by TIA reference to another statute or defined by any SEC rule and not otherwise defined herein have the meanings assigned to them therein.

SECTION 1.4. RULES OF CONSTRUCTION.

Unless the context otherwise requires:

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

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

(C) words in the singular include the plural, and words in the plural include the singular;

(D) provisions apply to successive events and transactions;

(E) the term “merger” includes a statutory share exchange and the term “merged” has a correlative meaning;

(F) the masculine gender includes the feminine and the neuter;

(G) references to agreements and other instruments include subsequent amendments thereto; and

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

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ARTICLE 2

THE SECURITIES

SECTION 2.1. FORM AND DATING.

The Securities and the Trustee’s certificate of authentication shall be substantially in the respective forms set forth inExhibit A, which Exhibit is incorporated in and made part of this Indenture. The Securities may have notations, legends or endorsements required by law, stock exchange rule or usage. The Company shall provide any such notations, legends or endorsements to the Trustee in writing. Each Security shall be dated the date of its authentication. The Securities are being offered and sold by the Company pursuant to Exchange Agreements, each dated February __, 2007, between the Company and the initial purchasers of the Initial Securities, in transactions exempt from, or not subject to, the registration requirements of the Securities Act.

(a)Restricted Global Securities. All of the Securities are initially being issued to qualified institutional buyers as defined in Rule 144A (collectively, “QIBs” or, individually, each a “QIB”) and shall be issued initially in the form of one or more Restricted Global Securities, which shall be deposited on behalf of the purchasers of the Securities represented thereby with the Trustee, at its Corporate Trust Office, as custodian for the depositary, The Depository Trust Company (“DTC”) (such depositary, or any successor thereto, being hereinafter referred to as the “Depositary”), and registered in the name of its nominee, Cede & Co., for the accounts of participation in the Depositary duly executed by the Company and authenticated by the Trustee as hereinafter provided. The aggregate principal amount of the Restricted Global Securities may from time to time be increased or decreased by adjustments made on the records of the Securities Custodian as hereinafter provided, subject in each case to compliance with the Applicable Procedures.

(b)Global Securities In General. Each Global Security shall represent such of the outstanding Securities as shall be specified therein and each shall provide that it shall represent the aggregate amount of outstanding Securities from time to time endorsed thereon and that the aggregate amount of outstanding Securities represented thereby may from time to time be reduced or increased, as appropriate, to reflect replacements, exchanges, purchases or conversions of such Securities. Any adjustment of the aggregate principal amount of a Global Security to reflect the amount of any increase or decrease in the amount of outstanding Securities represented thereby shall be made by the Trustee in accordance with instructions given by the Holder thereof as required by Section 2.12 hereof and shall be made on the records of the Trustee and the Depositary.

Members of, or participants in, the Depositary (“Agent Members”) shall have no rights under this Indenture with respect to any Global Security held on their behalf by the Depositary or under the Global Security, and the Depositary (including, for this purpose, its nominee) 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 Security for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall (A) 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 (B) impair, as between the Depositary and its Agent Members, the operation of customary practices governing the exercise of the rights of a Holder of any Security.

(c)Book Entry Provisions. The Company shall execute and the Trustee shall, in accordance with this Section 2.1(c), authenticate and deliver initially one or more Global Securities that (i) shall be registered

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in the name of the Depositary or its nominee, (ii) shall be delivered by the Trustee to the Depositary or pursuant to the Depositary’s instructions and (iii) shall bear legends substantially to the following effect:

“UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY TO MAGMA DESIGN AUTOMATION, INC. (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. THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY IS EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITARY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE AND, UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR SECURITIES IN DEFINITIVE FORM, THIS SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE 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.”

SECTION 2.2. EXECUTION AND AUTHENTICATION.

An Officer shall sign the Securities for the Company by manual or facsimile signature attested by the manual or facsimile signature of the Secretary or an Assistant Secretary of the Company. Typographic and other minor errors or defects in any such facsimile signature shall not affect the validity or enforceability of any Security which has been authenticated and delivered by the Trustee.

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

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

The Trustee shall authenticate and make available for delivery Initial Securities for original issue in the aggregate principal amount of up to $47,439,000 upon receipt of a written order or orders of the Company signed by two Officers of the Company (a “Company Order”). The Company Order shall specify the amount of Securities to be authenticated, shall provide that all such Securities will be represented by a Restricted Global Security and the date on which each original issue of Securities is to be authenticated. The aggregate principal amount of Initial Securities outstanding at any time may not exceed $47,439,000 except as provided in Section 2.7. The Company may, from time to time after the execution of this Indenture, execute and deliver to the Trustee for authentication Additional Securities, and the Trustee shall thereupon authenticate and deliver said Additional Securities to or upon the written order of the Company, without any further action by the Company hereunder;provided however that the Company may issue Additional Securities only if: (1)

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such Additional Securities and Initial Securities are treated as part of the same issue of debt instruments for purposes of U.S. federal income tax laws; (2) such Additional Securities shall have the same CUSIP number as the Initial Securities; and (3) the Trustee receives an Officers’ Certificate and an Opinion of Counsel to the effect that such issuance of Additional Securities complies with the provisions of this Indenture, including each provision of this paragraph.

The Trustee shall act as the initial authenticating agent. Thereafter, the Trustee may appoint an authenticating agent acceptable to the Company to authenticate Securities. An authenticating agent may authenticate Securities whenever the Trustee may do so. Each reference in this Indenture to authentication by the Trustee includes authentication by such agent. An authenticating agent shall have the same rights as an Agent to deal with the Company or an Affiliate of the Company.

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

SECTION 2.3. REGISTRAR, PAYING AGENT AND CONVERSION AGENT.

The Company shall maintain one or more offices or agencies where Securities may be presented for registration of transfer or for exchange (each, a “Registrar”), one or more offices or agencies where Securities may be presented for payment (each, a “Paying Agent”), one or more offices or agencies where Securities may be presented for conversion (each, a “Conversion Agent”) and one or more offices or agencies where notices and demands to or upon the Company in respect of the Securities and this Indenture may be served. The Company will at all times maintain a Paying Agent, Conversion Agent, Registrar and an office or agency where notices and demands to or upon the Company in respect of the Securities and this Indenture may be served in the Borough of Manhattan, The City of New York. One of the Registrars (the “Primary Registrar”) shall keep a register of the Securities and of their transfer and exchange.

The Company shall enter into an appropriate agency agreement with any Agent not a party to this Indenture. The agreement shall implement the provisions of this Indenture that relate to such Agent. The Company shall notify the Trustee of the name and address of any Agent not a party to this Indenture. If the Company fails to maintain a Registrar, Paying Agent, Conversion Agent or agent for service of notices and demands in any place required by this Indenture, or fails to give the foregoing notice, the Trustee shall act as such. The Company or any Affiliate of the Company may act as Paying Agent (except for the purposes of Section 6.1 and Article 10).

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

SECTION 2.4. PAYING AGENT TO HOLD MONEY IN TRUST.

Prior to 11:00 a.m., New York City time, on each due date of the principal of or interest (including any Additional Interest and/or Extension Fee), if any, on any Securities, the Company shall deposit with a Paying Agent a sum sufficient to pay such principal or interest (including any Additional Interest and/or Extension Fee), if any, so becoming due. Subject to Section 10.2, a Paying Agent shall hold in trust for the benefit of Holders or the Trustee all money held by the Paying Agent for the payment of principal of or interest (including any Additional Interest and/or Extension Fee), if any, on the Securities, and shall notify the

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Trustee of any default by the Company (or any other obligor on the Securities) in making any such payment. If the Company or an Affiliate of the Company acts as Paying Agent, it shall, before 11:00 a.m., New York City time, on each due date of the principal of or interest (including any Additional Interest and/or Extension Fee), if any, on any Securities, segregate the money and hold it as a separate trust fund. The Company at any time may require a Paying Agent to pay all money held by it to the Trustee, and the Trustee may at any time during the continuance of any default, upon written request to a Paying Agent, require such Paying Agent to pay forthwith to the Trustee all sums so held in trust by such Paying Agent. Upon doing so, the Paying Agent (other than the Company) shall have no further liability for the money.

SECTION 2.5. HOLDERS 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 Holders. If the Trustee is not the Primary Registrar, the Company shall furnish to the Trustee on or before any Interest Payment Date, if any, 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 Holders.

SECTION 2.6. TRANSFER AND EXCHANGE.

(a) Subject to compliance with any applicable additional requirements contained in Section 2.12, when a Security is presented to a Registrar with a request to register a transfer thereof or to exchange such Security for an equal principal amount of Securities of other authorized denominations, the Registrar shall register the transfer or make the exchange as requested;provided,however, that every Security presented or surrendered for registration of transfer or exchange shall be duly endorsed or accompanied by an assignment form and, if applicable, a transfer certificate each in the form included inExhibit A, and in form satisfactory to the Registrar duly executed by the Holder thereof or its attorney duly authorized in writing. To permit registration of transfers and exchanges, upon surrender of any Security for registration of transfer or exchange at an office or agency maintained pursuant to Section 2.3, the Company shall execute and the Trustee shall authenticate Securities of a like aggregate principal amount at the Registrar’s request. Any exchange or transfer shall be without charge, except that the Company or the Registrar may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto, andprovided,that this sentence shall not apply to any exchange pursuant to Section 2.10, 2.12(a), 3.5, 4.2 (penultimate paragraph) or 11.5.

Neither the Company, any Registrar nor the Trustee shall be required to exchange or register a transfer of any Securities or portions thereof in respect of which a Designated Event Purchase Notice has been delivered and not withdrawn by the Holder thereof (except, in the case of the purchase of a Security in part, the portion thereof not to be purchased).

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

(b) Any Registrar appointed pursuant to Section 2.3 hereof shall provide to the Trustee such information as the Trustee may reasonably require in connection with the delivery by such Registrar of Securities upon transfer or exchange of Securities.

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(c) Each Holder of a Security agrees to indemnify the Company and the Trustee against any liability that may result from the transfer, exchange or assignment of such Holder’s Security in violation of any provision of this Indenture and/or applicable United States federal or state securities law.

The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance with any restrictions on transfer imposed under this Indenture or under applicable law with respect to any transfer of any interest in any Security (including any transfers between or among Agent Members or other beneficial owners of interests in any Global Security) other than to require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required by the terms of, this Indenture, and to examine the same to determine substantial compliance as to form with the express requirements hereof.

SECTION 2.7. REPLACEMENT SECURITIES.

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

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

Upon the issuance of any new Securities under this Section 2.7, 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 reasonable expenses (including the reasonable fees and expenses of the Trustee or the Registrar) in connection therewith.

Every new Security issued pursuant to this Section 2.7 in lieu of any mutilated, destroyed, lost or stolen Security shall constitute an original additional contractual obligation of the Company, whether or not the mutilated, destroyed, lost or stolen Security 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 Securities duly issued hereunder.

The provisions of this Section 2.7 are (to the extent lawful) 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 Securities.

SECTION 2.8. OUTSTANDING SECURITIES.

Securities outstanding at any time are all Securities authenticated by the Trustee, except for those canceled by it, those converted pursuant to Article 4, those delivered to it for cancellation or surrendered for transfer or exchange and those described in this Section 2.8 as not outstanding.

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If a Security is replaced pursuant to Section 2.7, it ceases to be outstanding unless the Company receives proof satisfactory to it that the replaced Security is held by a bona fide purchaser.

If a Paying Agent (other than the Company or an Affiliate of the Company) holds on a Designated Event Purchase Date or the Final Maturity Date money sufficient to pay the principal of (including premium, if any) and interest (including any Additional Interest and/or Extension Fee), if any, on Securities (or portions thereof) payable on that date, then on and after such Designated Event Purchase Date or the Final Maturity Date, as the case may be, such Securities (or portions thereof, as the case may be) shall cease to be outstanding and interest (including any Additional Interest and/or Extension Fee), if any, on them shall cease to accrue.

Subject to the restrictions contained in Section 2.9, a Security does not cease to be outstanding because the Company or an Affiliate of the Company holds the Security.

SECTION 2.9. TREASURY SECURITIES.

In determining whether the Holders of the required principal amount of Securities have concurred in any notice, direction, waiver or consent, Securities owned by the Company or any other obligor on the Securities or by any Affiliate of the Company or of such other obligor shall be disregarded, except that, for purposes of determining whether the Trustee shall be protected in relying on any such notice, direction, waiver or consent, only Securities which a Trust Officer of the Trustee actually knows are so owned shall be so disregarded. Securities so owned which have been pledged in good faith shall not be disregarded if the pledgee establishes to the satisfaction of the Trustee the pledgee’s right so to act with respect to the Securities and that the pledgee is not the Company or any other obligor on the Securities or any Affiliate of the Company or of such other obligor.

SECTION 2.10. TEMPORARY SECURITIES.

Until definitive Securities are ready for delivery, the Company may prepare and execute, and, upon receipt of a Company Order, the Trustee shall authenticate and deliver, temporary Securities. Temporary Securities shall be substantially in the form of definitive Securities but may have variations that the Company with the consent of the Trustee considers appropriate for temporary Securities. Without unreasonable delay, the Company shall prepare and the Trustee shall authenticate and deliver definitive Securities in exchange for temporary Securities.

SECTION 2.11. CANCELLATION.

The Company at any time may deliver Securities to the Trustee for cancellation. The Registrar, the Paying Agent and the Conversion Agent shall forward to the Trustee or its agent any Securities surrendered to them for transfer, exchange, payment or conversion. The Trustee and no one else shall cancel, in accordance with its standard procedures, all Securities surrendered for transfer, exchange, payment, conversion or cancellation and shall deliver the canceled Securities to the Company. All Securities which are purchased or otherwise acquired by the Company or any of its Subsidiaries prior to the Final Maturity Date shall be delivered to the Trustee for cancellation, and the Company may not hold or resell such Securities or issue any new Securities to replace any such Securities or any Securities that any Holder has converted pursuant to Article 4.

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SECTION 2.12. LEGEND; ADDITIONAL TRANSFER AND EXCHANGE REQUIREMENTS.

(a) If Securities are issued upon the transfer, exchange or replacement of Securities subject to restrictions on transfer and bearing the legends set forth on the forms of Securities attached hereto asExhibit A (collectively, the “Legend”), or if a request is made to remove the Legend on a Security, the Securities so issued shall bear the Legend, or the Legend shall not be removed, as the case may be, unless there is delivered to the Company and the Registrar such satisfactory evidence, which shall include an opinion of counsel if requested by the Company or such Registrar, as may be reasonably required by the Company and the Registrar, that neither the Legend nor the restrictions on transfer set forth therein are required to ensure that transfers thereof comply with the provisions of Rule 144A, Rule 144 or Regulation S under the Securities Act or that such Securities are not “restricted” within the meaning of Rule 144 under the Securities Act;providedthat no such evidence need be supplied in connection with the sale of such Security pursuant to a registration statement that is effective at the time of such sale. Upon (i) provision of such satisfactory evidence if requested, or (ii) notification by the Company to the Trustee and Registrar of the sale of such Security pursuant to a registration statement that is effective at the time of such sale, the Trustee, at the written direction of the Company, shall authenticate and deliver a Security that does not bear the Legend. If the Legend is removed from the face of a Security and the Security is subsequently held by an Affiliate of the Company, the Legend shall be reinstated.

(b) A Global Security may not be transferred, in whole or in part, to any Person other than the Depositary or a nominee or any successor thereof, and no such transfer to any such other Person may be registered;providedthat the foregoing shall not prohibit any transfer of a Security that is issued in exchange for a Global Security but is not itself a Global Security. No transfer of a Security to any Person shall be effective under this Indenture or the Securities unless and until such Security has been registered in the name of such Person. Notwithstanding any other provisions of this Indenture or the Securities, transfers of a Global Security, in whole or in part, shall be made only in accordance with this Section 2.12.

(c) Subject to the succeeding paragraph, every Security shall be subject to the restrictions on transfer provided in the Legend other than a Restricted Global Security. Whenever any Restricted Security other than a Restricted Global Security is presented or surrendered for registration of transfer or for exchange for a Security registered in a name other than that of the Holder, such Security must be accompanied by a certificate in substantially the form set forth inExhibit A, dated the date of such surrender and signed by the Holder of such Security, as to compliance with such restrictions on transfer. The Registrar shall not be required to accept for such registration of transfer or exchange any Security not so accompanied by a properly completed certificate.

(d) The restrictions imposed by the Legend upon the transferability of any Security shall cease and terminate when such Security has been sold pursuant to an effective registration statement under the Securities Act or transferred in compliance with Rule 144 under the Securities Act (or any successor provision thereto) or, if earlier, upon the expiration of the holding period applicable to sales thereof under Rule 144(k) under the Securities Act (or any successor provision). Any Security as to which such restrictions on transfer shall have expired in accordance with their terms or shall have terminated may, upon a surrender of such Security for exchange to the Registrar in accordance with the provisions of this Section 2.12 (accompanied, in the event that such restrictions on transfer have terminated by reason of a transfer in compliance with Rule 144 or any successor provision, by, if requested by the Company or the Registrar, an opinion of counsel reasonably acceptable to the Company and addressed to the Company in form acceptable to the Company, to the effect that the transfer of such Security has been made in compliance with Rule 144 or

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such successor provision), be exchanged for a new Security, of like tenor and aggregate principal amount, which shall not bear the restrictive Legend. The Company shall inform the Trustee of the effective date of any registration statement registering the Securities under the Securities Act. The Trustee shall not be liable for any action taken or omitted to be taken by it in good faith in accordance with the aforementioned opinion of counsel or registration statement.

(e) As used in the preceding two paragraphs of this Section 2.12, the term “transfer” encompasses any sale, pledge, transfer, hypothecation or other disposition of any Security.

(f) The provisions of clauses (i), (ii), (iii), (iv) and (v) below shall apply only to Global Securities:

(i) Notwithstanding any other provisions of this Indenture or the Securities, a Global Security shall not be exchanged in whole or in part for a Security registered in the name of any Person other than the Depositary or one or more nominees thereof,providedthat a Global Security may be exchanged for Securities registered in the names of any person designated by the Depositary in the event that (A) the Depositary has notified the Company that it is unwilling or unable to continue as Depositary for such Global Security or such Depositary has ceased to be a “clearing agency” registered under the Exchange Act, and a successor Depositary is not appointed by the Company within 90 days, (B) the Company has provided the Depositary with written notice that it has decided to discontinue use of the system of book-entry transfer through the Depositary or any successor Depositary or (C) an Event of Default has occurred and is continuing with respect to the Securities. Any Global Security exchanged pursuant to clauses (A) or (B) above shall be so exchanged in whole and not in part, and any Global Security exchanged pursuant to clause (C) above may be exchanged in whole or from time to time in part as directed by the Depositary. Any Security issued in exchange for a Global Security or any portion thereof shall be a Global Security; provided that any such Security so issued that is registered in the name of a Person other than the Depositary or a nominee thereof shall not be a Global Security.

(ii) Securities issued in exchange for a Global Security or any portion thereof shall be issued in definitive, fully registered form, without interest coupons, shall have an aggregate principal amount equal to that of such Global Security or portion thereof to be so exchanged, shall be registered in such names and be in such authorized denominations as the Depositary shall designate and shall bear the applicable legends provided for herein. Any Global Security to be exchanged in whole shall be surrendered by the Depositary to the Trustee, as Registrar. With regard to any Global Security to be exchanged in part, either such Global Security shall be so surrendered for exchange or, if the Trustee is acting as custodian for the Depositary or its nominee with respect to such Global Security, the principal amount thereof shall be reduced, by an amount equal to the portion thereof to be so exchanged, by means of an appropriate adjustment made on the records of the Trustee. Upon any such surrender or adjustment, the Trustee shall authenticate and deliver the Security issuable on such exchange to or upon the order of the Depositary or an authorized representative thereof.

(iii) Subject to the provisions of clause (v) below, the registered Holder may grant proxies and otherwise authorize any Person, including Agent Members and persons that may hold interests through Agent Members, to take any action which a Holder is entitled to take under this Indenture or the Securities.

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(iv) In the event of the occurrence of any of the events specified in clause (i) above, the Company will promptly make available to the Trustee a reasonable supply of Certificated Securities in definitive, fully registered form, without interest coupons.

(v) Neither 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 Security registered in the name of the Depositary or any nominee thereof, or under any such Global Security, 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 Security 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 Security.

SECTION 2.13. CUSIP NUMBERS.

The Company in issuing the Securities may use one or more “CUSIP” numbers (if then generally in use), and, if so, the Trustee shall use “CUSIP” numbers in notices of purchase as a convenience to Holders;providedthat any such notice may state that no representation is made as to the correctness of such numbers either as printed on the Securities or as contained in any notice of a purchase and that reliance may be placed only on the other identification numbers printed on the Securities, and any such purchase shall not be affected by any defect in or omission of such numbers. The Company will promptly notify the Trustee of any change in the “CUSIP” numbers.

SECTION 2.14. WITHHOLDING TAXES.

The Company or any agent of the Company shall be entitled to deduct and withhold amounts required to be deducted and withheld under the Internal Revenue Code of 1986, as amended, or any provision of any federal, state, local or foreign tax law. To the extent that amounts are so deducted and withheld, such deducted and withheld amounts shall be treated for all purposes of this Indenture as having been paid to such holder in respect of whom such deduction and withholding was made.

ARTICLE 3

PURCHASE OF SECURITIES AT OPTION OF THE HOLDER UPON DESIGNATED EVENT

SECTION 3.1. [Reserved].

SECTION 3.2. PURCHASE OF SECURITIES AT OPTION OF THE HOLDER UPON DESIGNATED EVENT.

(a) If at any time that Securities remain outstanding there shall occur a Designated Event, Securities not theretofore called for redemption shall be purchased by the Company at the option of the Holders, as of the date that is 30 Business Days after the occurrence of the Designated Event (the “Designated Event Purchase Date”) at a purchase price equal to 100% of the principal amount of the Securities to be repurchased, together with accrued and unpaid interest (including any Additional Interest and/or Extension

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Fee), if any, to, but excluding, the Designated Event Purchase Date (the “Designated Event Purchase Price”), subject to satisfaction by or on behalf of any Holder of the requirements set forth in subsection (c) of this Section 3.2.

A “Change in Control” shall be deemed to have occurred if any of the following occurs after the date hereof:

(1) any “person” or “group” (as such terms are defined below) is or becomes the “beneficial owner” (as defined below), directly or indirectly, of shares of Voting Stock of the Company representing 50% or more of the total voting power of all outstanding Voting Stock of the Company or has the power, directly or indirectly, to elect a majority of the members of the Board of Directors of the Company; or

(2) the Company consolidates with, or merges with or into, another Person or the Company sells, assigns, conveys, transfers, leases or otherwise disposes of all or substantially all of the assets of the Company, or any Person consolidates with, or merges with or into, the Company, in any such event other than pursuant to a transaction in which the Persons that “beneficially owned” (as defined below), directly or indirectly, shares of Voting Stock of the Company immediately prior to such transaction “beneficially own” (as defined below), directly or indirectly, shares of Voting Stock of the Company representing at least a majority of the total voting power of all outstanding Voting Stock of the surviving or transferee Person;

(3) the holders of capital stock of the Company approve any plan or proposal for the liquidation or dissolution of the Company (whether or not otherwise in compliance with the terms hereof); or

(4) any time the Continuing Directors do not constitute a majority of the Board of Directors.

For the purpose of the definition of “Change in Control,” (i) “person” and “group” have the meanings given such terms under Section 13(d) and 14(d) of the Exchange Act or any successor provision to either of the foregoing, and the term “group” includes any group acting for the purpose of acquiring, holding or disposing of securities within the meaning of Rule 13d-5(b)(1) under the Exchange Act (or any successor provision thereto), (ii) a “beneficial owner” shall be determined in accordance with Rule 13d-3 under the Exchange Act, as in effect on the date of this Indenture, except that the number of shares of Voting Stock of the Company shall be deemed to include, in addition to all outstanding shares of Voting Stock of the Company and Unissued Shares deemed to be held by the “person” or “group” (as such terms are defined above) or other Person with respect to which the Change in Control determination is being made, all Unissued Shares deemed to be held by all other Persons, and (iii) the terms “beneficially owned” and “beneficially own” shall have meanings correlative to that of “beneficial owner.” The term “Unissued Shares” means shares of Voting Stock not outstanding that are subject to options, warrants, rights to purchase or conversion privileges exercisable within 60 days of the date of determination of a Change in Control.

Notwithstanding anything to the contrary set forth in this Section 3.2, a Change in Control under (1) or (2) above will not be deemed to have occurred if in the case of a merger or consolidation, all of the consideration (excluding cash payments for fractional shares and cash payments pursuant to dissenters’ appraisal rights) in the merger or consolidation constituting the Change in Control consists of common stock traded on a United States national securities exchange or listed on the Nasdaq Global Market (or which will be so traded or listed when issued or exchanged in connection with such Change in Control) and as a result of such transaction or transactions the Securities become convertible solely into such common stock.

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(b) Within 10 Business Days after the occurrence of a Designated Event, the Company shall mail a written notice of the Designated Event to the Trustee and to each Holder (and to beneficial owners as required by applicable law). The notice shall include the form of a Designated Event Purchase Notice to be completed by the Holder and shall state:

(1) the date of such Designated Event and, briefly, the events causing such Designated Event;

(2) the date by which the Designated Event Purchase Notice pursuant to this Section 3.2 must be given;

(3) the Designated Event Purchase Date;

(4) the Designated Event Purchase Price;

(5) the Holder’s right to require the Company to purchase the Securities;

(6) briefly, the conversion rights of the Securities;

(7) the name and address of each Paying Agent and Conversion Agent;

(8) the Conversion Price and any adjustments thereto;

(9) that Securities as to which a Designated Event Purchase Notice has been given may be converted into Common Stock pursuant to Article 4 of this Indenture only to the extent that the Designated Event Purchase Notice has been withdrawn in accordance with the terms of this Indenture;

(10) the procedures that the Holder must follow to exercise rights under this Section 3.2;

(11) the procedures for withdrawing a Designated Event Purchase Notice, including a form of notice of withdrawal; and

(12) that the Holder must satisfy the requirements set forth in the Securities in order to convert the Securities.

If any of the Securities is in the form of a Global Security, then the Company shall modify such notice to the extent necessary to accord with the procedures of the Depositary applicable to the repurchase of Global Securities.

(c) A Holder may exercise its rights specified in subsection (a) of this Section 3.2 upon delivery of a written notice (which shall be in substantially the form included inExhibit A hereto and which may be delivered by letter, overnight courier, hand delivery, facsimile transmission or in any other written form and, in the case of Global Securities, may be delivered electronically or by other means in accordance with the Depositary’s customary procedures) of the exercise of such rights (a “Designated Event Purchase Notice”) to any Paying Agent at any time prior to the close of business on the Business Day next preceding the Designated Event Purchase Date.

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The delivery of such Security to any Paying Agent (together with all necessary endorsements) at the office of such Paying Agent shall be a condition to the receipt by the Holder of the Designated Event Purchase Price therefor.

The Company shall purchase from the Holder thereof, pursuant to this Section 3.2, a portion of a Security if the principal amount of such portion is $1,000 or an integral multiple of $1,000. Provisions of the Indenture that apply to the purchase of all of a Security pursuant to Sections 3.2 through 3.7 also apply to the purchase of such portion of such Security.

Notwithstanding anything herein to the contrary, any Holder delivering to a Paying Agent the Designated Event Purchase Notice contemplated by this subsection (c) shall have the right to withdraw such Designated Event Purchase Notice in whole or in a portion thereof that is a principal amount of $1,000 or in an integral multiple thereof at any time prior to the close of business on the Business Day next preceding the Designated Event Purchase Date by delivery of a written notice of withdrawal to the Paying Agent in accordance with Section 3.3.

A Paying Agent shall promptly notify the Company of the receipt by it of any Designated Event Purchase Notice or written withdrawal thereof.

Anything herein to the contrary notwithstanding, in the case of Global Securities, any Designated Event Purchase Notice may be delivered or withdrawn and such Securities may be surrendered or delivered for purchase in accordance with the Applicable Procedures as in effect from time to time.

SECTION 3.3. EFFECT OF DESIGNATED EVENT PURCHASE NOTICE.

Upon receipt by any Paying Agent of the Designated Event Purchase Notice specified in Section 3.2(c), the Holder of the Security in respect of which such Designated Event Purchase Notice was given shall (unless such Designated Event Purchase Notice is withdrawn as specified below) thereafter be entitled to receive the Designated Event Purchase Price with respect to such Security. Such Designated Event Purchase Price shall be paid to such Holder promptly following the later of (a) the Designated Event Purchase Date with respect to such Security (provided the conditions in Section 3.2(c) have been satisfied) and (b) the time of delivery of such Security to a Paying Agent by the Holder thereof in the manner required by Section 3.2(c). Securities in respect of which a Designated Event Purchase Notice has been given by the Holder thereof may not be converted into shares of Common Stock pursuant to Article 4 on or after the date of the delivery of such Designated Event Purchase Notice unless such Designated Event Purchase Notice has first been validly withdrawn.

A Designated Event Purchase Notice may be withdrawn by means of a written notice (which may be delivered by mail, overnight courier, hand delivery, facsimile transmission or in any other written form and, in the case of Global Securities, may be delivered electronically or by other means in accordance with the Depositary’s customary procedures) of withdrawal delivered by the Holder to a Paying Agent at any time prior to the close of business on the Business Day immediately preceding the Designated Event Purchase Date, specifying the principal amount of the Security or portion thereof (which must be a principal amount of $1,000 or an integral multiple of $1,000 in excess thereof) with respect to which such notice of withdrawal is being submitted.

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SECTION 3.4. DEPOSIT OF DESIGNATED EVENT PURCHASE PRICE.

On or before 11:00 a.m. New York City time on the Designated Event Purchase Date, the Company shall deposit with the Trustee or with a Paying Agent (other than the Company or an Affiliate of the Company) an amount of money (in immediately available funds if deposited on such Designated Event Purchase Date) sufficient to pay the aggregate Designated Event Purchase Price of all the Securities or portions thereof that are to be purchased as of such Designated Event Purchase Date. The manner in which the deposit required by this Section 3.4 is made by the Company shall be at the option of the Company,providedthat such deposit shall be made in a manner such that the Trustee or a Paying Agent shall have immediately available funds on the Designated Event Purchase Date.

If a Paying Agent holds, in accordance with the terms hereof, money sufficient to pay the Designated Event Purchase Price of any Security for which a Designated Event Purchase Notice has been tendered and not withdrawn in accordance with this Indenture then, on the Designated Event Purchase Date, such Security will cease to be outstanding and the rights of the Holder in respect thereof shall terminate (other than the right to receive the Designated Event Purchase Price as aforesaid). The Company shall publicly announce the principal amount of Securities purchased as a result of such Designated Event on or as soon as practicable after the Designated Event Purchase Date.

SECTION 3.5. SECURITIES PURCHASED IN PART.

Any Security that is to be purchased only in part shall be surrendered at the office of a Paying Agent, and promptly after the Designated Event Purchase Date the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such Security, without service charge, a new Security or Securities, of such authorized denomination or denominations as may be requested by such Holder, in aggregate principal amount equal to, and in exchange for, the portion of the principal amount of the Security so surrendered that is not purchased.

SECTION 3.6. COMPLIANCE WITH SECURITIES LAWS UPON PURCHASE OF SECURITIES.

In connection with any offer to purchase or purchase of Securities under Section 3.2, the Company shall (a) comply with Rule 13e-4 and Rule 14e-1 (or any successor to either such Rule), if applicable, under the Exchange Act, (b) file the related Schedule TO (or any successor or similar schedule, form or report) if required under the Exchange Act, and (c) otherwise comply with all federal and state securities laws in connection with such offer to purchase or purchase of Securities, all so as to permit the rights of the Holders and obligations of the Company under Sections 3.2 through 3.5 to be exercised in the time and in the manner specified therein.

SECTION 3.7. REPAYMENT TO THE COMPANY.

To the extent that the aggregate amount of cash deposited by the Company pursuant to Section 3.4 exceeds the aggregate Designated Event Purchase Price together with interest (including any Additional Interest and/or Extension Fee), if any, thereon of the Securities or portions thereof that the Company is obligated to purchase, then promptly after the Designated Event Purchase Date the Trustee or a Paying Agent, as the case may be, shall return any such excess cash to the Company.

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ARTICLE 4

CONVERSION

SECTION 4.1. CONVERSION PRIVILEGE.

(a) Subject to the obligation and the right of the Company to pay some or all of the conversion consideration in cash in accordance with Section 4.14 and the other provisions of this Article 4, and upon compliance with the provisions of this Indenture, each Holder shall have the right, at his or her option, at any time on or before the close of business on the last Trading Day prior to the Maturity Date (except that, with respect to any Security or portion thereof subject to a redemption in accordance with Article 13 of this Indenture or a duly completed election for repurchase in connection with a Designated Event, such right shall terminate at the close of business on the last Trading Day prior to the Redemption Date or Designated Event Purchase Date, as applicable (unless the Company defaults in the payment due upon such redemption or repurchase, as applicable, or such Holder elects to withdraw the submission of such election to repurchase in accordance with Section 3.2(c))) to convert the principal amount of any Security held by such Holder, or any portion of such principal amount which is $1,000 or an integral multiple thereof, into that number of fully paid and non-assessable shares of Common Stock obtained by dividing the principal amount of the Security or portion thereof to be converted by the Conversion Price in effect at such time, only under the following circumstances:

(1) during any calendar quarter beginning after March 31, 2007, and only during such calendar quarter, if, as of the last day of the immediately preceding calendar quarter, the Volume Weighted Average Price per share of the Common Stock for at least 20 Trading Days in the period of the 30 consecutive Trading Days ending on the last Trading Day of such preceding calendar quarter was more than 150% of the Conversion Price on the last day of such preceding calendar quarter (the “Conversion Trigger Price”);

(2) during any five Trading Day period after any five consecutive Trading Day period in which the Trading Price per $1,000 principal amount of Securities, as determined following a request by a holder in accordance with the procedures described below in Section 4.1(d)(2), for each day of that period was less than 98% of the product of (x) the Volume Weighted Average Price of the Common Stock for each day in that period and (y) the Conversion Rate per $1,000 principal amount of Securities;

(3) if the Company distributes to all holders of Common Stock rights or warrants entitling them to purchase, for a period expiring within 45 days of the date of issuance, Common Stock at less than the Closing Price of the Common Stock on the day of issuance;

(4) if the Company distributes to all holders of Common Stock, assets, debt securities or rights to purchase the Company’s securities, which distribution has a per share value exceeding 7.5% of the Volume Weighted Average Price of the Common Stock on the Business Day preceding the declaration date for such distribution;

(5) if a Designated Event occurs or is anticipated to occur (as further described in clause (h));

(6) at any time during the period beginning 60 days prior to, but excluding, any scheduled Designated Event Purchase Date or the Final Maturity Date; or

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(7) for Securities that have been called for redemption, at any time prior to the close of business on the Business Day prior to the Redemption Date, even if the Securities are not otherwise convertible at such time.

(b) In the case of a distribution contemplated by clauses (3) and (4) of Section 4.1(a), the Company shall notify Holders at least 20 days prior to the ex-dividend date for such distribution (the “Distribution Notice”). Once the Company has given the Distribution Notice, Holders may surrender their Securities for conversion at any time until the earlier of the close of business on the last Trading Day preceding the ex-dividend date or the Company’s announcement that such distribution will not take place. In the event of a distribution contemplated by clauses (3) and (4) of Section 4.1(a), Holders may not convert the Securities if the Holders will otherwise participate in such distribution without converting their Securities. The Company will provide written notice to the Conversion Agent as soon as reasonably practicable of any anticipated or actual event or transaction that will cause or causes the Securities to become convertible pursuant to clauses (3) or (4) of Section 4.1(a).

(c) In the case of a transaction contemplated by clause (5) of Section 4.1(a) that the Company knows or reasonably should know will occur, the Company will notify the Holders and Trustee at least 15 Trading Days prior to the date on which such Designated Event becomes effective (the “Designated Event Date”). If the Company does not know, and should not reasonably know, that a Designated Event will occur until a date that is within 15 Trading Days before the anticipated Designated Event Date or other applicable event, the Company will notify the Holders and the Trustee promptly after the Company has knowledge of such Designated Event or such other event. Holders may surrender Securities for conversion at any time beginning 15 Trading Days before the anticipated Designated Event Purchase Date of a Designated Event and until the Trading Day prior to the date of the Designated Event Purchase Date.

(d)(1) For each calendar quarter of the Company, beginning with the calendar quarter beginning at any time after March 31, 2007, the Conversion Agent, on behalf of the Company, will determine, on the first Business Day following the last Trading Day of the previous calendar quarter, whether the Securities are convertible pursuant to clause (1) of Section 4.1(a), and, if so, will notify the Trustee and the Company in writing. Upon request of the Conversion Agent, the Company shall provide, or cause to be provided to, the Conversion Agent the Volume Weighted Average Price per share of Common Stock for the 30 consecutive Trading Days ending on the last Trading Day of the preceding calendar quarter.

(2) The Bid Solicitation Agent shall have no obligation to determine the Trading Price of the Securities and whether the Securities are convertible pursuant to clause (2) of Section 4.1(a) unless the Company has requested such determination in writing; and the Company shall have no obligation to make such request unless a Holder of Securities provides the Company with reasonable evidence that the Trading Price per $1,000 principal amount of Securities would be less than 98% of the product of the Volume Weighted Average Price of the Common Stock and the Conversion Rate per $1,000 principal amount of Securities. At such time, the Company shall instruct the Bid Solicitation Agent to determine the Trading Price of the Securities beginning on the next Trading Day and on each successive Trading Day until the Trading Price per $1,000 principal amount of the Securities is greater than 98% of the product of the Volume Weighted Average Price of the Common Stock and the Conversion Rate per $1,000 principal amount of the Securities.

(e) The conversion rights pursuant to this Article 4 shall commence on the initial issuance date of the Securities and expire at the close of business on the Business Day immediately preceding the Final Maturity Date, but shall be exercisable only during the time periods specified with respect to each

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circumstance pursuant to which the Securities become convertible. If a Security is called for redemption pursuant to Article 13 or submitted or presented for purchase upon a Designated Event pursuant to Section 3.2, such conversion right shall terminate at the close of business on the Business Day immediately preceding the Redemption Date or Designated Event Purchase Date, as applicable, for such Security (unless the Company shall default in the payment due upon such redemption or repurchase, as applicable, in which case the conversion right shall terminate at the close of business on the date such failure is cured and such Security is redeemed or purchased). If a Security is convertible as a result of a Designated Event such conversion right shall commence and terminate as set forth in Section 4.1(c). Securities in respect of which a Designated Event Purchase Notice has been delivered may not be surrendered for conversion pursuant to this Article 4 prior to a valid withdrawal of such Designated Event Purchase Notice in accordance with the provisions of Section 3.2(c).

(f) Provisions of this Indenture that apply to conversion of all of a Security also apply to conversion of a portion of a Security.

(g) A Holder of Securities is not entitled to any rights of a holder of Common Stock until such holder has converted its Securities into Common Stock, and only to the extent such Securities are deemed to have been converted into Common Stock pursuant to this Article 4.

(h) If there shall have occurred a Designated Event, then the Conversion Rate per $1,000 principal amount of Securities otherwise in effect in respect of Securities for which a conversion notice is received by the Conversion Agent during the period beginning 15 Trading Days before the date announced by the Company as the anticipated Designated Event Date and ending at the close of business on the Trading Day immediately preceding the Designated Event Purchase Date shall be increased by the amount, if any, determined by reference to the table below, based on the Designated Event Date and the Stock Price of such Designated Event; provided that if the Stock Price or Designated Event Date are not set forth on the table: (i) if the actual Stock Price on the Designated Event Date is between two Stock Prices on the table or the actual Designated Event Date is between two Designated Event Dates on the table, the amount of the Conversion Rate adjustment will be determined by a straight-line interpolation between the adjustment amounts set forth for the two Stock Prices and the two Designated Event Dates on the table based on a 365-day year, as applicable, (ii) if the Stock Price on the Designated Event Date exceeds $31.00 per share, subject to adjustment as set forth herein, no adjustment to the applicable Conversion Rate will be made, and (iii) if the Stock Price on the Designated Event Date is less than $11.00 per share, subject to adjustment as set forth herein, no adjustment to the applicable Conversion Rate will be made. If holders of the Common Stock receive only cash in the Designated Event, the Stock Price shall be the cash amount paid per share of the Common Stock in connection with the Designated Event. Otherwise, the Stock Price shall be equal to the Volume Weighted Average Price of the Common Stock for each of the 10 Trading Days immediately preceding, but not including, the applicable Designated Event Date.

The following table shows the amount, if any, by which the applicable Conversion Rate will increase for each Stock Price and Designated Event Date set forth below:

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Make Whole Premium Upon a Designated Event

(Increase in Applicable Conversion Rate)

Stock Price on Effective Date	March 2, 2007	February 25, 2008	February 25, 2009	May 15, 2010
$11.00	22.0	21.5	20.5	20.5
$13.00	14.4	13.1	9.7	9.7
$15.00	9.9	8.2	3.6	0.0
$17.00	6.8	5.1	1.0	0.0
$19.00	4.9	3.3	0.3	0.0
$21.00	3.5	2.1	0.1	0.0
$23.00	2.6	1.5	0.0	0.0
$25.00	2.0	1.1	0.0	0.0
$27.00	1.6	0.8	0.0	0.0
$29.00	1.2	0.6	0.0	0.0
$31.00	0.0	0.0	0.0	0.0

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 of the Securities 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 as so adjusted. The Conversion Rate adjustment amounts set forth in the table above will be adjusted in the same manner as the Conversion Rate as set forth in Section 4.6 hereof, other than as a result of an adjustment of the Conversion Rate by virtue of the provisions of this Section 4.1(h).

Notwithstanding the foregoing, in no event will the Conversion Rate exceed 88.6667 per $1,000 principal amount of Securities, other than on account of proportional adjustments to the Conversion Rate in the manner set forth in Section 4.6 below.

(i) Except as set forth in Section 4.2, by delivering the amount of cash and, if applicable, the number of shares of Common Stock issuable on conversion to the Trustee, the Company will be deemed to have satisfied its obligation to pay the principal amount of the Securities so converted and its obligation to pay accrued and unpaid interest attributable to the period from the most recent Interest Payment Date through the Conversion Date (which amount will be deemed paid in full rather than cancelled, extinguished or forfeited).

(j) If a Holder has delivered a Notice that it wishes to have its Securities repurchased in accordance with Section 3.2, the Holder may not surrender such Security for conversion until the holder has withdrawn such notice in accordance with Section 3.2(c).

SECTION 4.2. CONVERSION PROCEDURE.

To convert a Security, a Holder must (a) complete and manually sign the conversion notice on the back of the Security and deliver such notice to a Conversion Agent, (b) surrender the Security to a Conversion

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Agent, (c) furnish appropriate endorsements and transfer documents if required by a Registrar or a Conversion Agent, and (d) pay any transfer or similar tax, if required. The date on which the Holder satisfies all of those requirements is the “Conversion Date.” As soon as practicable after the later of the Conversion Date and the date all calculations necessary to make such payment and delivery have been made, but in no event later than five Trading Days after the later of such dates, the Company shall (i) pay to the Holders the cash in respect of any fractional interest in respect of a share of Common Stock arising upon such conversion and, if exercised by the Company, in respect of Section 4.14 and (ii) issue and shall deliver to such Holder at the office or agency maintained by the Company for such purpose, a certificate or certificates for the number of whole shares of Common Stock issuable upon the conversion. Anything herein to the contrary notwithstanding, in the case of Global Securities, conversion notices may be delivered and such Securities may be surrendered for conversion in accordance with the Applicable Procedures as in effect from time to time.

The person in whose name the Common Stock certificate is registered shall be deemed to be a stockholder of record on the Conversion Date;provided,however, that no surrender of a Security on any date when the stock transfer books of the Company shall be closed shall be effective to constitute the person or persons entitled to receive the shares of Common Stock upon such conversion as the record holder or holders of such shares of Common Stock on such date, but such surrender shall be effective to constitute the person or persons entitled to receive such shares of Common Stock as the record holder or holders thereof for all purposes at the close of business on the next succeeding day on which such stock transfer books are open;provided,further, that such conversion shall be at the Conversion Price in effect on the Conversion Date as if the stock transfer books of the Company had not been closed. Upon conversion of a Security, such person shall no longer be a Holder of such Security. No payment or adjustment will be made for dividends or distributions on shares of Common Stock issued upon conversion of a Security.

Securities so surrendered for conversion (in whole or in part) during the period from the close of business on any Record Date to the opening of business on the next succeeding Interest Payment Date, if any (excluding Securities or portions thereof presented for purchase upon a Designated Event on a Designated Event Purchase Date during the period beginning at the close of business on a Record Date and ending at the opening of business on the first Business Day after the next succeeding Interest Payment Date, if any, or if such Interest Payment Date, if any, is not a Business Day, the second such Business Day) shall also be accompanied by payment in funds acceptable to the Company of an amount equal to the interest (including any Additional Interest and/or Extension Fee), if any, payable on such Interest Payment Date on the principal amount of such Security then being converted, and such interest (including any Additional Interest and/or Extension Fee), if any, shall be payable to such registered Holder notwithstanding the conversion of such Security, subject to the provisions of this Indenture relating to the payment of defaulted interest, if any, by the Company. Except as otherwise provided in this Section 4.2, no payment or adjustment will be made for accrued interest (including any Additional Interest and/or Extension Fee), if any, on a converted Security. If the Company defaults in the payment of interest (including any Additional Interest and/or Extension Fee), if any, payable on such Interest Payment Date, the Company shall promptly repay such funds to such Holder.

Nothing in this Section shall affect the right of a Holder in whose name any Security is registered at the close of business on a record date to receive the interest (including any Additional Interest and/or Extension Fee), if any, payable on such Security on the related Interest Payment Date, if any, in accordance with the terms of this Indenture, the Securities and the Registration Rights Agreement. If a Holder converts more than one Security at the same time, the number of shares of Common Stock issuable upon the conversion shall be based on the aggregate principal amount of Securities converted.

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Upon surrender of a Security that is converted in part, the Company shall execute, and the Trustee shall authenticate and deliver to the Holder, a new Security equal in principal amount to the unconverted portion of the Security surrendered.

Upon the Company’s determination that a holder is or will be entitled to convert its Securities into cash and, if applicable, shares of Common Stock pursuant to this Article 4, the Company will promptly notify such Holder in the manner provided in Section 12.2 of this Indenture.

SECTION 4.3. FRACTIONAL SHARES.

The Company will not issue fractional shares of Common Stock upon conversion of Securities. In lieu thereof, the Company will pay an amount in cash for the current market value of the fractional shares. The current market value of a fractional share shall be determined, (calculated to the nearest 1/1000^th of a share) by multiplying the Closing Price (determined as set forth in Section 4.6(d)) of the Common Stock on the Trading Day immediately prior to the Conversion Date by such fractional share and rounding the product to the nearest whole cent.

SECTION 4.4. TAXES ON CONVERSION.

If a Holder converts a Security, the Company shall pay any documentary, stamp or similar issue or transfer tax due on the issue of shares of Common Stock upon such conversion. However, the Holder shall pay any such tax which is due because the Holder requests the shares to be issued in a name other than the Holder’s name. The Conversion Agent may refuse to deliver the certificate representing the Common Stock being issued in a name other than the Holder’s name until the Conversion Agent receives a sum sufficient to pay any tax which will be due because the shares are to be issued in a name other than the Holder’s name. Nothing herein shall preclude any tax withholding required by law or regulation.

SECTION 4.5. COMPANY TO PROVIDE STOCK.

The Company shall, prior to issuance of any Securities hereunder, and from time to time as may be necessary, reserve, out of its authorized but unissued Common Stock, a sufficient number of shares of Common Stock to permit the conversion of all outstanding Securities into shares of Common Stock.

All shares of Common Stock delivered upon conversion of the Securities shall be newly issued shares, shall be duly authorized, validly issued, fully paid and nonassessable and shall be free from preemptive or similar rights and free of any lien or adverse claim.

The Company will endeavor promptly to comply with all federal and state securities laws regulating the offer and delivery of shares of Common Stock upon conversion of Securities, if any, and will list or cause to have quoted such shares of Common Stock on each national securities exchange or on the Nasdaq Global Market or other over-the-counter market or such other market on which the Common Stock is then listed or quoted;provided,however, that if rules of such automated quotation system or exchange permit the Company to defer the listing of such Common Stock until the first conversion of the Securities into Common Stock in accordance with the provisions of this Indenture, the Company covenants to list such Common Stock issuable upon conversion of the Securities in accordance with the requirements of such automated quotation system or exchange at such time. Any Common Stock issued upon conversion of a Security hereunder which at the time of conversion was a Restricted Security will also be a Restricted Security.

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SECTION 4.6. ADJUSTMENT OF CONVERSION PRICE.

The conversion price as stated in paragraph 6 of the Securities (the “Conversion Price”) shall be adjusted from time to time by the Company as follows:

(a) In case the Company shall (i) pay a dividend on its Common Stock in shares of Common Stock, (ii) make a distribution on its Common Stock in shares of Common Stock, (iii) subdivide its outstanding Common Stock into a greater number of shares, or (iv) combine its outstanding Common Stock into a smaller number of shares, the Conversion Price in effect immediately prior thereto shall be adjusted so that the Holder of any Security thereafter surrendered for conversion shall be entitled to receive that number of shares of Common Stock which it would have owned had such Security been converted immediately prior to the happening of such event. An adjustment made pursuant to this subsection (a) shall become effective immediately after the record date in the case of a dividend or distribution and shall become effective immediately after the effective date in the case of subdivision or combination.

(b) In case the Company shall issue rights or warrants to all or substantially all holders of its Common Stock entitling them (for a period of not more than 60 days after such issuance) to subscribe for or purchase shares of Common Stock (or securities convertible into Common Stock) at a price per share (or having a Conversion Price per share) less than the Current Market Price per share of Common Stock (as determined in accordance with subsection (f) of this Section 4.6) on the record date for the determination of stockholders entitled to receive such rights or warrants, the Conversion Price in effect immediately prior thereto 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 of which the numerator shall be the number of shares of Common Stock outstanding on such record date plus the number of shares which the aggregate offering price of the total number of shares of Common Stock so offered (or the aggregate conversion price of the convertible securities so offered, which shall be determined by multiplying the number of shares of Common Stock issuable upon conversion of such convertible securities by the conversion price per share of Common Stock pursuant to the terms of such convertible securities) would purchase at the Current Market Price per share (as defined in subsection (f) of this Section 4.6) of Common Stock on such record date, and of which the denominator shall be the number of shares of Common Stock outstanding on such record date plus the number of additional shares of Common Stock offered (or into which the convertible securities so offered are convertible). Such adjustment shall be made successively whenever any such rights or warrants are issued, and shall become effective immediately after such record date. If at the end of the period during which such rights or warrants are exercisable not all rights or warrants shall have been exercised, the adjusted Conversion Price shall be immediately readjusted to what it would have been based upon the number of additional shares of Common Stock actually issued (or the number of shares of Common Stock issuable upon conversion of convertible securities actually issued).

(c) In case the Company shall distribute to all or substantially all holders of its Common Stock any shares of capital stock of the Company (other than Common Stock), evidences of indebtedness or other non-cash assets (including securities of any person other than the Company but excluding (1)dividends or distributions paid exclusively in cash or (2)dividends or distributions referred to in subsection(a) of this Section4.6), or shall distribute to all or substantially all holders of its Common Stock rights or warrants to subscribe for or purchase any of its securities (excluding those rights and warrants referred to in subsection(b) of this Section4.6 and also excluding the distribution of rights to all holders of Common Stock pursuant to a Rights Plan (as defined below) adopted before or after the date of this Indenture), then in each such case the Conversion Price shall be adjusted so that the same shall equal the price determined by multiplying the current Conversion Price by a fraction of which the numerator shall be the Current Market

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Price per share (as defined in subsection (f) of this Section 4.6) of the Common Stock on the record date mentioned below less the fair market value on such record date (as determined by the Board of Directors, whose determination shall be conclusive evidence of such fair market value and which shall be evidenced by an Officers’ Certificate delivered to the Trustee) of the portion of the capital stock, evidences of indebtedness or other non-cash assets so distributed or of such rights or warrants applicable to one share of Common Stock (determined on the basis of the number of shares of Common Stock outstanding on the record date), and of which the denominator shall be the Current Market Price per share (as defined in subsection (f) of this Section 4.6) of the Common Stock on such record date. Such adjustment shall be made successively whenever any such distribution is made and shall become effective immediately after the record date for the determination of stockholders entitled to receive such distribution.

In the event the then fair market value (as so determined) of the portion of the capital stock, evidences of indebtedness or other non-cash assets so distributed or of such rights or warrants applicable to one share of Common Stock is equal to or greater than the Current Market Price per share of the Common Stock on such record date, in lieu of the foregoing adjustment, adequate provision shall be made so that each holder of a Security shall have the right to receive upon conversion the amount of capital stock, evidences of indebtedness or other non-cash assets so distributed or of such rights or warrants such holder would have received had such holder converted each Security on 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 4.6(c) by reference to the actual or when issued trading market for any securities, it must in doing so consider the prices in such market over the same period used in computing the Current Market Price of the Common Stock.

With respect to any rights (the “Rights”) that may be issued or distributed pursuant to any rights plan that the Company implements after the date of this Indenture (any Rights that may be issued pursuant to any such future rights plan being referred to as, a “Rights Plan”), upon conversion of the Securities into Common Stock, to the extent that such Rights Plan is in effect upon such conversion, the holders of Securities will receive, in addition to the Common Stock, the Rights described therein (whether or not the Rights have separated from the Common Stock at the time of conversion), subject to the limitations set forth in any such Rights Plan. Any distribution of rights or warrants pursuant to a Rights Plan complying with the requirements set forth in the immediately preceding sentence of this paragraph shall not constitute a distribution of rights or warrants pursuant to this Section 4.6(c).

Rights or warrants (other than rights issued pursuant to a Rights Plan) distributed by the Company to all holders of Common Stock entitling the holders thereof to subscribe for or purchase shares of the Company’s Capital Stock (either initially or under certain circumstances), which rights or warrants, until the occurrence of a specified event or events (“Trigger Event”): (i) are deemed to be transferred with such shares of Common Stock; (ii) are not exercisable; and (iii) are also issued in respect of future issuances of Common Stock, shall be deemed not to have been distributed for purposes of this Section 4.6 (and no adjustment to the Conversion Price under this Section 4.6 will be required) until the occurrence of the earliest Trigger Event, whereupon such rights and warrants shall be deemed to have been distributed and an appropriate adjustment (if any is required) to the Conversion Price shall be made under this Section 4.6(c). If any such right or warrant, including any such existing rights or warrants distributed prior to the date of this Indenture, are subject to events, upon the occurrence of which such rights or warrants become exercisable to purchase different securities, evidences of indebtedness or other assets, then the date of the occurrence of any and each such event shall be deemed to be the date of distribution and record date with respect to new rights or warrants with such rights (and a termination or expiration of the existing rights or warrants without exercise

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by any of the holders 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 was counted for purposes of calculating a distribution amount for which an adjustment to the Conversion Price under this Section 4.6 was made, (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 or holders of Common Stock with respect to such rights or warrants (assuming such holder had retained such rights or warrants), made to all holders of Common Stock as of the date of such redemption or repurchase, and (2) in the case of such rights or warrants which shall have expired or been terminated without exercise by any holders thereof, the Conversion Price shall be readjusted as if such rights and warrants had not been issued.

(d) In case the Company shall, by dividend or otherwise, at any time distribute (a “Triggering Distribution”) to all or substantially all holders of its Common Stock cash, the Conversion Price shall be reduced so that the same shall equal the price determined by multiplying such Conversion Price in effect immediately prior to the open of business on the day on which such Triggering Distribution is declared by the Company (the “Determination Date”) by a fraction of which the numerator shall be the Current Market Price per share of the Common Stock (as determined in accordance with subsection (f) of this Section 4.6) on the Determination Date less the sum of the aggregate amount of cash and the aggregate fair market value (determined as aforesaid in this Section 4.6(d)) of any such other consideration so distributed, paid or payable (including, without limitation, the Triggering Distribution) applicable to one share of Common Stock (determined on the basis of the number of shares of Common Stock outstanding on the Determination Date) and the denominator shall be such Current Market Price per share of the Common Stock (as determined in accordance with subsection (f) of this Section 4.6) on the Determination Date, such reduction to become effective immediately prior to the opening of business on the day following the date on which the Triggering Distribution is paid.

(e) In case any tender offer made by the Company or any of its Subsidiaries for Common Stock shall expire and such tender offer (as amended upon the expiration thereof), then, immediately prior to the opening of business on the day after the last date (the “Expiration Date”) tenders could have been made pursuant to such tender offer (as it may be amended) (the last time at which such tenders could have been made on the Expiration Date is hereinafter sometimes called the “Expiration Time”), 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 the Expiration Date by a fraction of which the numerator shall be the product of the number of shares of Common Stock outstanding (including tendered shares but excluding any shares held in the treasury of the Company) at the Expiration Time multiplied by the Current Market Price per share of the Common Stock (as determined in accordance with subsection (f) of this Section 4.6) on the Trading Day next succeeding the Expiration Date and the denominator shall be the sum of (x) the aggregate consideration (determined as aforesaid) 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 and excluding any shares held in the treasury of the Company) at the Expiration Time and the Current Market Price per share of Common Stock (as determined in accordance with subsection (f) of this Section 4.6) on the Trading Day next succeeding the Expiration Date, such reduction to become effective immediately prior to the opening of business on the day following the Expiration Date. In the event that the Company is obligated to purchase shares pursuant to any such tender offer, but the Company is permanently

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prevented by applicable law from effecting any or all such purchases or any or all such purchases are rescinded, the Conversion Price shall again be adjusted to be the Conversion Price which would have been in effect based upon the number of shares actually purchased. If the application of this Section 4.6(e) 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 4.6(e).

For purposes of this Section 4.6(e), the term “tender offer” shall mean and include both tender offers and exchange offers, all references to “purchases” of shares in tender offers (and all similar references) shall mean and include both the purchase of shares in tender offers and the acquisition of shares pursuant to exchange offers, and all references to “tendered shares” (and all similar references) shall mean and include shares tendered in both tender offers and exchange offers.

(f) For the purpose of any computation under subsections (b), (c), (d) and (e) of this Section 4.6, the current market price (the “Current Market Price”) per share of Common Stock on any date shall be deemed to be the average of the daily closing prices for the 30 consecutive Trading Days commencing 45 Trading Days before (i) the Determination Date or the Expiration Date, as the case may be, with respect to distributions or tender offers under subsection (c) of this Section 4.6 or (ii) the record date with respect to distributions, issuances or other events requiring such computation under subsection (b), (c), (d) or (e) of this Section 4.6. The closing price (the “Closing Price”) for each day shall be the last reported sales price or, in case no such reported sale takes place on such date, the average of the reported closing bid and asked prices in either case on the Nasdaq Global Market or, if the Common Stock is not listed or admitted to trading on the Nasdaq Global Market, on the principal national securities exchange on which the Common Stock is listed or admitted to trading or, if not listed or admitted to trading on the Nasdaq Global Market or any other national securities exchange, the closing sales price or, in case no reported sale takes place, the average of the closing bid and asked prices, as furnished by any two members of the National Association of Securities Dealers, Inc. selected from time to time by the Company for that purpose. If no such prices are available, the Current Market Price per share shall be the fair value of a share of Common Stock as determined in good faith by the Board of Directors (which shall be evidenced by an Officers’ Certificate delivered to the Trustee).

(g) In any case in which this Section 4.6 shall require that an adjustment be made following a record date or a Determination Date or Expiration Date, as the case may be, established for purposes of this Section 4.6, the Company may elect to defer (but only until five Business Days following the filing by the Company with the Trustee of the certificate described in Section 4.9) issuing to the Holder of any Security converted after such record date or Determination Date or Expiration Date the shares of Common Stock and other capital stock of the Company issuable upon such conversion over and above the shares of Common Stock and other capital stock of the Company issuable upon such conversion only on the basis of the Conversion Price prior to adjustment; and, in lieu of the shares the issuance of which is so deferred, the Company shall issue or cause its transfer agents to issue due bills or other appropriate evidence prepared by the Company of the right to receive such shares. If any distribution in respect of which an adjustment to the Conversion Price is required to be made as of the record date or Determination Date or Expiration Date therefor is not thereafter made or paid by the Company for any reason, the Conversion Price shall be readjusted to the Conversion Price which would then be in effect if such record date had not been fixed or such effective date or Determination Date or Expiration Date had not occurred.

SECTION 4.7. NO ADJUSTMENT.

No adjustment in the Conversion Price shall be required if Holders may participate in the transactions set forth in Section 4.6 above without converting.

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No adjustment in the Conversion Price shall be required unless the adjustment would require an increase or decrease of at least 1% in the Conversion Price as last adjusted;provided, however, that any adjustments which by reason of this Section 4.7 are not required to be made shall be carried forward and taken into account in any subsequent adjustment. All calculations under this Article 4 shall be made to the nearest cent or to the nearest one-hundredth of a share, as the case may be.

No adjustment need be made for issuances of Common Stock pursuant to a Company plan for reinvestment of dividends or interest or for a change in the par value or a change to no par value of the Common Stock.

To the extent that the Securities become convertible into the right to receive cash, no adjustment need be made thereafter as to the cash. Interest will not accrue on the cash.

SECTION 4.8. ADJUSTMENT FOR TAX PURPOSES.

The Company shall be entitled to make such reductions in the Conversion Price, in addition to those required by Section 4.6, as it in its discretion shall determine to be advisable in order that any stock dividends, subdivisions of shares, distributions of rights to purchase stock or securities or distributions of securities convertible into or exchangeable for stock hereafter made by the Company to its stockholders shall not be taxable.

SECTION 4.9. NOTICE OF ADJUSTMENT.

Whenever the Conversion Price or conversion privilege is adjusted, the Company shall promptly mail to Holders a notice of the adjustment and file with the Trustee an Officers’ Certificate briefly stating the facts requiring the adjustment and the manner of computing it. Unless and until the Trustee shall receive an Officers’ Certificate setting forth an adjustment of the Conversion Price, the Trustee may assume without inquiry that the Conversion Price has not been adjusted and that the last Conversion Price of which it has knowledge remains in effect.

SECTION 4.10. NOTICE OF CERTAIN TRANSACTIONS.

In the event that:

(1) the Company takes any action which would require an adjustment in the Conversion Price;

(2) the Company consolidates or merges with, or transfers all or substantially all of its property and assets to, another corporation and stockholders of the Company must approve the transaction; or

(3) there is a dissolution or liquidation of the Company,

the Company shall mail to Holders and file with the Trustee a notice stating the proposed record or effective date, as the case may be. The Company shall mail the notice at least ten days before such date. Failure to mail such notice or any defect therein shall not affect the validity of any transaction referred to in clause (1), (2) or (3) of this Section 4.10.

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SECTION 4.11. EFFECT OF RECLASSIFICATION, CONSOLIDATION, MERGER OR SALE ON CONVERSION PRIVILEGE.

If any of the following shall occur, namely: (a) any reclassification or change of shares of Common Stock issuable upon conversion of the Securities (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, or any other change for which an adjustment is provided in Section 4.6); (b) any consolidation or merger or combination to which the Company is a party other than a merger in which the Company is the continuing corporation and which does not result in any reclassification of, or change (other than 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) in, outstanding shares of Common Stock; or (c) any sale or conveyance as an entirety or substantially as an entirety of the property and assets of the Company, directly or indirectly, to any person, then the Company, or such successor, purchasing or transferee corporation, as the case may be, shall, as a condition precedent to such reclassification, change, combination, consolidation, merger, sale or conveyance, execute and deliver to the Trustee a supplemental indenture providing that the Holder of each Security then outstanding shall have the right to convert such Security into the kind and amount of shares of stock and other securities and property (including cash) receivable upon such reclassification, change, combination, consolidation, merger, sale or conveyance by a Holder of the number of shares of Common Stock deliverable upon conversion of such Security immediately prior to such reclassification, change, combination, consolidation, merger, sale or conveyance. In the event holders of Common Stock have the opportunity to elect the form of consideration to be received in such reclassification, change, combination, consolidation, merger, sale or conveyance, the Company will make adequate provision whereby the Holders of the Securities shall have the opportunity, on a timely basis, to determine the form of consideration into which all of the Securities, treated as a single class, shall be convertible. The form of consideration into which all of the Securities, treated as a single class, shall be convertible, shall be determined by the Holders of a majority of the Securities (based on principal amount outstanding thereunder) who have made an election as to such form of consideration and shall be subject to any limitations to which all of the holders of Common Stock are subject, such as pro rata reductions applicable to any portion of the consideration payable. In the event that the Holders do not make such election on or prior to the date 10 days after receipt of notice that such election is required, then for the purposes of this Section 4.11 the kind and amount of securities, cash or other property receivable upon such reclassification, change, combination, consolidation, merger, sale or conveyance by each Holder shall be deemed to be the kind and amount so receivable by holders of a plurality of the Common Stock. Such supplemental indenture shall provide for adjustments of the Conversion Price which shall be as nearly equivalent as may be practicable to the adjustments of the Conversion Price provided for in this Article 4. If, in the case of any such consolidation, merger, combination, sale or conveyance, the stock or other securities and property (including cash) receivable thereupon by a holder of Common Stock include shares of stock or other securities and property of a person other than the successor, purchasing or transferee corporation, as the case may be, in such consolidation, merger, combination, sale or conveyance, then such supplemental indenture shall also be executed by such other person and shall contain such additional provisions to protect the interests of the Holders of the Securities as the Board of Directors shall reasonably consider necessary by reason of the foregoing. Appropriate provisions will be made, as determined in good faith by the Company’s Board of Directors, to preserve the settlement provisions of Section 4.14 following such reclassification, change, consolidation, merger, share exchange, combination, sale or conveyance to the extent feasible. The Company may not become a party to any such transaction unless its terms are consistent with this Section 4.11.

In the event the Company shall execute a supplemental indenture pursuant to this Section 4.11, the Company shall promptly file with the Trustee (x) an Officers’ Certificate briefly stating the reasons therefor,

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the kind or amount of shares of stock or other securities or property (including cash) receivable by Holders of the Securities upon the conversion of their Securities after any such reclassification, change, combination, consolidation, merger, sale or conveyance, any adjustment to be made with respect thereto and that all conditions precedent have been complied with and (y) an Opinion of Counsel that all conditions precedent have been complied with, and shall promptly mail notice thereof to all Holders.

SECTION 4.12. TRUSTEE’S DISCLAIMER.

The Trustee shall have no duty to determine when an adjustment under this Article 4 should be made, how it should be made or what such adjustment should be, but may accept as conclusive evidence of that fact or the correctness of any such adjustment, and shall be protected in relying upon, an Officers’ Certificate including the Officers’ Certificate with respect thereto which the Company is obligated to file with the Trustee pursuant to Section 4.9. The Trustee makes no representation as to the validity or value of any securities or assets issued upon conversion of Securities, and the Trustee shall not be responsible for the Company’s failure to comply with any provisions of this Article 4.

The Trustee shall not be under any responsibility to determine the correctness of any provisions contained in any supplemental indenture executed pursuant to Section 4.11, but may accept as conclusive evidence of the correctness thereof, and shall be fully protected in relying upon, the Officers’ Certificate with respect thereto which the Company is obligated to file with the Trustee pursuant to Section 4.11.

SECTION 4.13. VOLUNTARY REDUCTION.

The Company from time to time may reduce the Conversion Price by any amount for any period of time if the period is at least 20 days and if the reduction is irrevocable during the period if the Board of Directors determines that such reduction would be in the best interest of the Company or to avoid or diminish income tax to holders of shares of the Common Stock in connection with a dividend or distribution of stock or similar event, and the Company provides 15 days prior notice of any reduction in the Conversion Price;provided,however, that in no event may the Company reduce the Conversion Price to be less than the par value of a share of Common Stock.

SECTION 4.14. PAYMENT OF CASH IN LIEU OF COMMON STOCK.

(a) In lieu of delivery of some or all of the shares of Common Stock otherwise issuable upon notice of conversion of any Securities, at the Company’s option the Holders surrendering Securities for conversion shall receive for each $1,000 principal amount of Securities surrendered for conversion: (A) cash in an amount equal to the lesser of (1) $1,000 and (2) the Conversion Value; and, in addition to amounts distributed pursuant to (A), (B) if the Conversion Value is greater than $1,000, a number of shares of Common Stock equal to the sum of the Daily Share Amounts for each of the 20 consecutive Trading Days in the Conversion Reference Period, appropriately adjusted to reflect stock splits, stock dividends, combinations or similar events occurring during the Conversion Reference Period, subject to the Company’s right to deliver cash in lieu of all or a portion of such shares as set forth in Section 4.14(b). The Company will deliver such cash and any shares of Common Stock, together with any cash payable for fractional shares, to such holder in accordance with Section 4.2(a).

(b) The Company may elect to pay cash to the Holders of Securities surrendered for conversion in lieu of all or a portion of the Common Stock otherwise issuable pursuant to Section 4.14(a). In such event, on any day prior to the first Trading Day of the applicable Conversion Reference Period, the Company will

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specify a percentage of the Daily Share Amount that will be settled in cash (the “Cash Percentage”) and the amount of cash that the Company will pay in respect of each Trading Day in the applicable Conversion Reference Period will equal the product of: (1) the Cash Percentage, (2) the Daily Share Amount for such Trading Day and (3) the Closing Price of the Common Stock for such Trading Day (provided that after the consummation of a Change in Control in which the consideration is comprised entirely of cash, the amount used in this clause (3) will be the cash price per share received by holders of the Common Stock in such Change in Control). The number of shares that the Company shall deliver in respect of each Trading Day in the applicable Conversion Reference Period will be a percentage of the Daily Share Amount equal to 100% minus the Cash Percentage. Upon making a determination that a percentage of the Daily Share Amount will be settled in cash, the Company shall promptly provide notice of such information to the Holders in the manner provided in Section 12.2 prior to the first Trading Day of the applicable Conversion Reference Period. If the Company does not specify a Cash Percentage by the start of the applicable Conversion Reference Period, the Company shall settle 100% of the Daily Share Amount for each Trading Day in the applicable Conversion Reference Period with shares of Common Stock; provided, however, that the Company shall pay cash in lieu of fractional shares otherwise issuable upon conversion of Securities.

(c) For the purposes of Sections 4.14(a) and (b), in the event that any of Conversion Value, Daily Share Amounts or Volume Weighted Average Price cannot be determined for all portions of the Conversion Reference Period, the Company’s Board of Directors shall in good faith determine the values necessary to calculate the Conversion Value, Daily Share Amounts and Volume Weighted Average Price, as applicable.

ARTICLE 5

RANKING

SECTION 5.1. DESIGNATED SENIOR INDEBTEDNESS.

The Securities shall be “Designated Senior Indebtedness” for purposes of the indenture governing the Company’s Zero Coupon Convertible Subordinated Notes due May 15, 2008.

ARTICLE 6

COVENANTS

SECTION 6.1. PAYMENT OF SECURITIES.

The Company shall promptly make all payments in respect of the Securities on the dates and in the manner provided in the Securities and this Indenture. An installment of principal or interest (including any Additional Interest and/or Extension Fee), if any, shall be considered paid on the date it is due if the Paying Agent (other than the Company) holds by 11:00 a.m., New York City time, on that date money, deposited by the Company or an Affiliate thereof, sufficient to pay the installment. Subject to Section 4.2 hereof, accrued and unpaid interest (including any Additional Interest and/or Extension Fee), if any, on any Security that is payable, and is punctually paid or duly provided for, on any Interest Payment Date shall be paid to the Person in whose name that Security is registered at the close of business on the record date for such interest, if any, at the office or agency of the Company maintained for such purpose. The Company shall, (in immediately available funds) to the fullest extent permitted by law, pay interest on overdue principal (including premium, if any) and overdue installments of interest (including any Additional Interest and/or Extension Fee), if any, at the rate borne by the Securities.

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Payment of the principal of (and premium, if any) and interest (including any Additional Interest and/or Extension Fee), if any, on the Securities shall be made at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, The City of New York (which shall initially be the Trustee) or at the Corporate Trust Office of the Trustee in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts;provided,however, that at the option of the Company payment of interest (including any Additional Interest and/or Extension Fee), if any, may be made by check mailed to the address of the Person entitled thereto as such address appears in the register of the Securities maintained at the Primary Registrar;providedfurther that a Holder with an aggregate principal amount in excess of $2,000,000 will be paid by wire transfer in immediately available funds at the election of such Holder if such Holder has provided wire transfer instructions to the Company at least 10 Business Days prior to the payment date.

SECTION 6.2. SEC REPORTS.

The Company shall timely file all reports and other information and documents which it is required to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act (provided that filings made within any extension pursuant to Rule 12b-25 under the Exchange Act or any successor rule thereto shall be deemed timely), and within 15 days after it is required to file them with the SEC, the Company shall file copies of all such reports, information and other documents with the Trustee.

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).

SECTION 6.3. COMPLIANCE CERTIFICATES.

The Company shall deliver to the Trustee, within 90 days after the end of each fiscal year of the Company (beginning with the fiscal year ending April 1, 2007), an Officers’ Certificate as to the signer’s knowledge of the Company’s compliance with all conditions and covenants on its part contained in this Indenture and stating whether or not the signer knows of any default or Event of Default. If such signer knows of such a default or Event of Default, the Officers’ Certificate shall describe the default or Event of Default and the efforts to remedy the same. For the purposes of this Section 6.3, compliance shall be determined without regard to any grace period or requirement of notice provided pursuant to the terms of this Indenture.

SECTION 6.4. 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 6.5. MAINTENANCE OF CORPORATE EXISTENCE.

Subject to Article 7, the Company will do or cause to be done all things necessary to preserve and keep in full force and effect its corporate existence.

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SECTION 6.6. RULE 144A INFORMATION REQUIREMENT.

Within the period prior to the expiration of the holding period applicable to sales thereof under Rule 144(k) under the Securities Act (or any successor provision), the Company covenants and agrees that it shall, during any period in which it is not subject to Section 13 or 15(d) under the Exchange Act, upon the request of any Holder or beneficial holder of the Securities make available to such Holder or beneficial holder of Securities or any Common Stock issued upon conversion thereof which continue to be Restricted Securities in connection with any sale thereof and any prospective purchaser of Securities or such Common Stock designated by such Holder or beneficial holder, the information required pursuant to Rule 144A(d)(4) under the Securities Act and it will take such further action as any Holder or beneficial holder of such Securities or such Common Stock may reasonably request, all to the extent required from time to time to enable such Holder or beneficial holder to sell its Securities or Common Stock without registration under the Securities Act within the limitation of the exemption provided by Rule 144A, as such Rule may be amended from time to time. Upon the request of any Holder or any beneficial holder of the Securities or such Common Stock, the Company will deliver to such Holder a written statement as to whether it has complied with such requirements.

SECTION 6.7. STAY, EXTENSION AND USURY LAWS.

The Company covenants (to the extent that it may lawfully do so) that it shall not at any time insist upon, plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law or other law which would prohibit or forgive the Company from paying all or any portion of the principal of, premium, if any, or interest (including any Additional Interest and/or Extension Fee), if any, on the Securities as contemplated herein, wherever enacted, now or at any time hereafter in force, or which may affect the covenants or the performance of this Indenture, and the Company (to the extent it may lawfully do so) hereby expressly waives all benefit or advantage of any such law and covenants that it will not, by resort to any such law, hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer and permit the execution of every such power as though no such law had been enacted.

SECTION 6.8. PAYMENT OF ADDITIONAL INTEREST AND EXTENSION FEE.

If Additional Interest or an Extension Fee is payable by the Company pursuant to the Registration Rights Agreement or pursuant to Section 8.1 of this Indenture, the Company shall deliver to the Trustee a certificate to that effect stating (i) the amount of such Additional Interest or Extension Fee that is payable, (ii) the reason why such Additional Interest or Extension Fee is payable and (iii) the date on which such Additional Interest or Extension Fee is payable. Unless and until a Trust Officer of the Trustee receives such a certificate, the Trustee may assume without inquiry that no such Additional Interest or Extension Fee is payable. If the Company has paid Additional Interest or an Extension Fee directly to the Persons entitled to such Additional Interest or Extension Fee, the Company shall deliver to the Trustee a certificate setting forth the particulars of such payment.

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ARTICLE 7

CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 7.1. COMPANY MAY CONSOLIDATE, ETC, ONLY ON CERTAIN TERMS.

The Company shall not consolidate with or merge into any other Person (in a transaction in which the Company is not the surviving Person) or convey, transfer or lease its properties and assets substantially as an entirety to any Person, unless:

(1) in case the Company shall consolidate with or merge into another Person (in a transaction in which the Company is not the surviving Person) or convey, transfer or lease its properties and assets substantially as an entirety to any Person, the Person formed by such consolidation or into which the Company is merged or the Person which acquires by conveyance or transfer, or which leases, the properties and assets of the Company substantially as an entirety shall be a corporation organized and validly existing under the laws of the United States of America, any State thereof or the District of Columbia and shall expressly assume, by an indenture supplemental hereto, executed and delivered to the Trustee, in form satisfactory to the Trustee, the due and punctual payment of the principal of and any premium and interest (including any Additional Interest and/or Extension Fee), if any, on all the Securities and the performance or observance of every covenant of this Indenture on the part of the Company to be performed or observed and the conversion rights shall be provided for in accordance with Article 4, by supplemental indenture satisfactory in form to the Trustee, executed and delivered to the Trustee, by the Person (if other than the Company) formed by such consolidation or into which the Company shall have been merged or by the Person which shall have acquired the Company’s assets;

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

(3) the Company has 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 complies with this Article and that all conditions precedent herein provided for relating to such transaction have been complied with.

SECTION 7.2. SUCCESSOR SUBSTITUTED.

Upon any consolidation of the Company with, or merger of the Company into, any other Person or any conveyance, transfer or lease of the properties and assets of the Company substantially as an entirety in accordance with Section 7.1, the successor Person formed by such consolidation or into which the Company is merged or to which such conveyance, transfer or lease is made 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 successor Person had been named as the Company herein, and thereafter, except in the case of a lease, the predecessor Person shall be relieved of all obligations and covenants under this Indenture and the Securities.

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ARTICLE 8

DEFAULT AND REMEDIES

SECTION 8.1. EVENTS OF DEFAULT.

An “Event of Default” shall occur if:

(1) the Company defaults in the payment of any interest (including any Additional Interest and/or Extension Fee), if any, on any Security when the same becomes due and payable and the default continues for a period of 30 days;

(2) the Company defaults in the payment of any principal of (including, without limitation, any premium, if any, on) any Security when the same becomes due and payable (whether at maturity, upon a Designated Event Purchase Date or otherwise);

(3) the Company fails to comply with any of its other agreements contained in the Securities or this Indenture (other than a failure of the Company to perform a covenant that is specifically dealt with elsewhere in this Section 8.1) and such failure continues for the period and after the notice specified below;provided,however, that this clause 8.1(3) shall not apply to the Company’s obligations under Section 6.2 or Section 6.6 of this Indenture;

(4) the Company defaults in the payment of the purchase price of any Security when the same becomes due and payable;

(5) the Company fails to deliver all cash and any shares of Common Stock when such cash and Common Stock, if any, are required to be delivered upon conversion of a Security and such failure continues for 10 days after such failure;

(6) the Company fails to provide a Designated Event Purchase Notice when required by Section 3.2;

(7) any indebtedness under any bond, debenture, note or other evidence of indebtedness for money borrowed by the Company or any Significant Subsidiary (all or substantially all of the outstanding voting securities of which are owned, directly or indirectly, by the Company) or under any mortgage, indenture or instrument under which there may be issued or by which there may be secured or evidenced any indebtedness for money borrowed by the Company or any Significant Subsidiary (all or substantially all of the outstanding voting securities of which are owned, directly or indirectly, by the Company) (an “Instrument”) with a principal amount then outstanding in excess of U.S. $15,000,000, whether such indebtedness now exists or shall hereafter be created, is not paid at final maturity of the Instrument (either at its stated maturity or upon acceleration thereof), and such indebtedness is not discharged, or such acceleration is not rescinded or annulled, within a period of 30 days after there shall have been given, by registered or certified mail, to the Company by the Trustee or to the Company and the Trustee by the Holders of at least 25% in aggregate principal amount of the Securities then outstanding a written notice specifying such default and requiring the Company to cause such indebtedness to be discharged or cause such default to be cured or waived or such acceleration to be rescinded or annulled and stating that such notice is a “Notice of Default” hereunder;

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(8) the Company fails to file its annual or quarterly reports in accordance with Sections 6.2 or 6.6 or to comply with the requirements of Section 314(a)(1) of the Trust Indenture Act (a “Filing Failure”) and there has been given, by registered or certified mail, to the Company and the Trustee by the Holders of not less than 25% in aggregate principal amount of the Securities then outstanding, a written notice specifying such default and requiring the Company to cause such default to be cured or waived and stating that such notice is a “Notice of Default” hereunder and such failure shall continue for either (i) for sixty (60) days after such notice is given and the Company has not elected to pay the Extension Fee as provided in this Section 8.1 or (ii) for up to one hundred and eighty (180) days after such notice is given if the Company has elected to pay the Extension Fee as provided in this Section 8.1 (and no Event of Default under this clause 8.1(8) shall be deemed to occur until the passage of such sixty (60) day or such one hundred and eighty (180) day period, as applicable), provided that for purposes of this Section 8.1(8), no Filing Failure shall be deemed to have occurred if the Company files such reports within any extension period pursuant to Rule 12b-25 of the Exchange Act or any successor rule thereto and that no Notice of Default shall be given until after the expiration of such extension period;

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

(A) commences a voluntary case or proceeding;

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

(C) consents to the appointment of a Custodian of it or for all or substantially all of its property; or

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

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

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

(B) appoints a Custodian of the Company or any Significant Subsidiary or for all or substantially all of the property of the Company or any Significant Subsidiary; or

(C) orders the liquidation of the Company or any Significant Subsidiary;

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

The term “Bankruptcy Law” means Title 11 of the United States Code (or any successor thereto) or any similar federal or state law for the relief of debtors. The term “Custodian” means any receiver, trustee, assignee, liquidator, sequestrator or similar official under any Bankruptcy Law.

A default under clause (3) 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 Securities then outstanding notify the Company and the Trustee, in writing of the default, and the Company does not cure the default within 60 days

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after receipt of such notice. The notice given pursuant to this Section 8.1 must specify the default, demand that it be remedied and state that the notice is a “Notice of Default.” When any default under this Section 8.1 is cured, it ceases.

Upon the occurrence of a Filing Failure, the Company may elect, within sixty (60) days of the date notice is given to the Company and the Trustee in accordance with Section 8.1(8) (unless such Filing Failure is theretofore cured or waived pursuant to Section 8.4, as applicable), to pay to the Holders a fee accruing at the rate of 1.00% per annum of the aggregate principal amount of Securities that are then outstanding (the “Extension Fee”) on the terms and in the manner described in this paragraph. If the Company elects to pay any Extension Fee, the Company, at any time on or before the close of business on the Business Day immediately prior to the sixtieth (60th) day after the date on which the applicable Filing Failure first occurs, (i) shall notify, in the manner provided for in Section 12.2, the Holders and the Trustee of such election and (ii) shall deliver to the Trustee a certificate to that effect stating the date on which the applicable Extension Fee pursuant to this paragraph will begin to accrue. The Extension Fee shall be paid on the same times and in the same manner as interest and Additional Interest, if any, shall be paid in accordance with this Indenture. The Extension Fee shall accrue on the Securities from the date that is sixty (60) days after date notice is given by the Holders in accordance with Section 8.1(8) to, but excluding, the earlier of (i) the date on which the Company has made the filings initially giving rise to the Filing Failure and (ii) the date that is one hundred eighty (180) days after the date notice is given by the Holders in accordance with Section 8.1(8). Notwithstanding the foregoing, if an additional Filing Failure occurs during an Extension Period, the Securities will only be subject to acceleration for such additional Filing Failure at the earlier of (x) the end of the Extension Period and (y) in the event that the Company has agreed to pay an Extension Fee in accordance with the terms of this Section 8.1 as to such additional Filing Failure, the end of the Extension Period as to such additional Filing Failure. For the avoidance of doubt, notwithstanding the occurrence of multiple concurrent Filing Failures, the Extension Fee shall not exceed the rate provided for in this paragraph.

The Trustee shall not be charged with knowledge of any Event of Default unless written notice thereof shall have been given to a Trust Officer at the Corporate Trust Office of the Trustee by the Company, a Paying Agent, any Holder or any agent of any Holder.

SECTION 8.2. ACCELERATION.

(a) If an Event of Default (other than an Event of Default specified in clause (9) or (10) of Section 8.1) occurs and is continuing, the Trustee may, by notice to the Company, or the Holders of at least 25% in aggregate principal amount of the Securities then outstanding may, by notice to the Company and the Trustee, declare all unpaid principal to the date of acceleration on the Securities then outstanding (if not then due and payable) to be due and payable upon any such declaration, and the same shall become and be immediately due and payable. If an Event of Default specified in clause (9) or (10) of Section 8.1 occurs, all unpaid principal of the Securities then outstanding shall ipso facto become and be immediately due and payable without any declaration or other act on the part of the Trustee or any Holder. The Holders of a majority in aggregate principal amount of the Securities then outstanding by notice to the Trustee may rescind an acceleration and its consequences if (a) all existing Events of Default, other than the nonpayment of the principal of the Securities which has become due solely by such declaration of acceleration, have been cured or waived; (b) to the extent the payment of such interest is lawful, interest at a rate borne by the Securities on overdue installments of interest (including any Additional Interest and/or Extension Fee), if any, and overdue principal, which has become due otherwise than by such declaration of acceleration, has been paid; (c) the rescission would not conflict with any judgment or decree of a court of competent jurisdiction; and (d) all payments due to the Trustee and any predecessor Trustee under Section 9.7 have been made. No such rescission shall affect any subsequent default or impair any right consequent thereto.

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SECTION 8.3. OTHER REMEDIES.

If an Event of Default occurs and is continuing, the Trustee may, but shall not be obligated to, pursue any available remedy by proceeding at law or in equity to collect the payment of the principal of or interest (including any Additional Interest and/or Extension Fee), if any, on the Securities or to enforce the performance of any provision of the Securities or this Indenture.

The Trustee may maintain a proceeding even if it does not possess any of the Securities or does not produce any of them in the proceeding. A delay or omission by the Trustee or any Securityholder 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 to the extent permitted by law.

SECTION 8.4. WAIVER OF DEFAULTS AND EVENTS OF DEFAULT.

Subject to Sections 8.7 and 11.2, the Holders of a majority in aggregate principal amount of the Securities then outstanding by notice to the Trustee may waive an existing default or Event of Default and its consequence, except a default or Event of Default in the payment of the principal of, premium, if any, or interest (including any Additional Interest and/or Extension Fee), if any, on any Security, a failure by the Company to convert any Securities into Common Stock or any default or Event of Default in respect of any provision of this Indenture or the Securities which, under Section 11.2, cannot be modified or amended without the consent of the Holder of each Security affected. When a default or Event of Default is waived, it is cured and ceases.

SECTION 8.5. CONTROL BY MAJORITY.

The Holders of a majority in aggregate principal amount of the Securities then outstanding may direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or exercising any trust or power conferred on it. However, the Trustee may refuse to follow any direction that conflicts with law or this Indenture, that the Trustee determines may be unduly prejudicial to the rights of another Holder or the Trustee, or that may involve the Trustee in personal liability unless the Trustee is offered indemnity satisfactory to it;provided,however, that the Trustee may take any other action deemed proper by the Trustee which is not inconsistent with such direction.

SECTION 8.6. LIMITATIONS ON SUITS.

A Holder may not pursue any remedy with respect to this Indenture or the Securities (except actions for payment of overdue principal, premium, if any, or interest (including any Additional Interest and/or Extension Fee), if any, for the conversion of the Securities pursuant to Article 4) unless:

(1) the Holder gives to the Trustee written notice of a continuing Event of Default;

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

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

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

(5) no direction inconsistent with such written request has been given to the Trustee during such 60-day period by the Holders of a majority in aggregate principal amount of the Securities then outstanding.

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

SECTION 8.7. RIGHTS OF HOLDERS TO RECEIVE PAYMENT AND TO CONVERT.

Notwithstanding any other provision of this Indenture, the right of any Holder of a Security to receive payment of the principal of and interest (including any Additional Interest and/or Extension Fee), if any, on the Security, on or after the respective due dates expressed in the Security and this Indenture, to convert such Security in accordance with Article 4 and to bring suit for the enforcement of any such payment on or after such respective dates or the right to convert, is absolute and unconditional and shall not be impaired or affected without the consent of the Holder.

SECTION 8.8. COLLECTION SUIT BY TRUSTEE.

If an Event of Default in the payment of principal or interest (including any Additional Interest and/or Extension Fee), if any, specified in clause (1) or (2) of Section 8.1 occurs and is continuing, the Trustee may recover judgment in its own name and as trustee of an express trust against the Company or another obligor on the Securities for the whole amount of principal and accrued interest (including any Additional Interest and/or Extension Fee), if any, remaining unpaid, together with, to the extent that payment of such interest is lawful interest on overdue principal and overdue installments of interest (including any Additional Interest and/or Extension Fee), if any, in each case at a rate borne by the Securities and such further amount as shall be sufficient to cover the costs and expenses of collection, including the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel.

SECTION 8.9. TRUSTEE MAY FILE PROOFS OF CLAIM.

The Trustee may file such proofs of claim and other papers or documents as may be necessary or advisable in order to have the claims of the Trustee (including any claim for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel) and the Holders allowed in any judicial proceedings relative to the Company (or any other obligor on the Securities), its creditors or its property and shall be entitled and empowered to collect and receive any money or other property payable or deliverable on any such claims and to distribute the same, and any Custodian 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 to the Trustee any amount due to 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 9.7, and to the extent that such payment of the reasonable compensation, expenses, disbursements and advances in any such proceedings shall be denied for any reason, payment of the same shall be secured by a lien on, and shall be paid out of, any and all

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distributions, dividends, money, securities and other property which the Holders may be entitled to receive in such proceedings, whether in liquidation or under any plan of reorganization or arrangement or otherwise. Nothing herein contained shall be deemed to authorize the Trustee to authorize or consent to, or, on behalf of any Holder, to authorize, accept or adopt any plan of reorganization, arrangement, adjustment or composition affecting the Securities 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 8.10. PRIORITIES.

If the Trustee collects any money pursuant to this Article 8, it shall pay out the money in the following order:

First, to the Trustee for amounts due under Section 9.7;

Second, to Holders for amounts due and unpaid on the Securities for principal and interest (including any Additional Interest and/or Extension Fee), if any, ratably, without preference or priority of any kind, according to the amounts due and payable on the Securities for principal and interest (including any Additional Interest and/or Extension Fee), if any, respectively; and

Third, the balance, if any, to the Company.

The Trustee may fix a record date and payment date for any payment to Holders pursuant to this Section 8.10.

SECTION 8.11. UNDERTAKING FOR COSTS.

In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for any action taken or omitted by it as Trustee, a court in its discretion may require the filing by any party litigant in the suit of an undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable costs, including reasonable attorneys’ fees 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 8.11 does not apply to a suit made by the Trustee, a suit by a Holder pursuant to Section 8.7, or a suit by Holders of more than 10% in aggregate principal amount of the Securities then outstanding.

ARTICLE 9

TRUSTEE

SECTION 9.1. DUTIES OF TRUSTEE.

(a) If an Event of Default has occurred and is continuing, 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 its exercise as a prudent person would exercise or use under the circumstances in the conduct of his or her own affairs.

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

(1) the Trustee need perform only those duties as are specifically set forth in this Indenture and no others; and

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(2) in the absence of bad faith on its part, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture. The Trustee, however, shall examine any certificates and opinions which by any provision hereof are specifically required to be delivered to the Trustee to determine whether or not they conform to the requirements of this Indenture.

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

(1) this paragraph does not limit the effect of subsection (b) of this Section 9.1;

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

(3) the Trustee shall not be liable with respect to any action it takes or omits to take in good faith in accordance with a direction received by it pursuant to Section 8.5.

(d) 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 unless the Trustee shall have received adequate indemnity in its opinion against potential costs and liabilities incurred by it relating thereto.

(e) Every provision of this Indenture that in any way relates to the Trustee is subject to subsections (a), (b), (c) and (d) of this Section 9.1.

(f) The Trustee shall not be liable for interest on any money received by it except as the Trustee may agree in writing with the Company. Money held in trust by the Trustee need not be segregated from other funds except to the extent required by law.

SECTION 9.2. RIGHTS OF TRUSTEE.

Subject to Section 9.1:

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

(b) Before the Trustee acts or refrains from acting, it may require an Officers’ Certificate or an Opinion of Counsel, which shall conform to Section 12.4(b). The Trustee shall not be liable for any action it takes or omits to take in good faith in reliance on such Officers’ Certificate or Opinion.

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

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

(e) The Trustee may consult with counsel of its selection, and the advice or opinion of such counsel as to matters of law shall be full and complete authorization and protection in respect of any such action taken, omitted or suffered by it hereunder in good faith and in accordance with the advice or opinion of such counsel.

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(f) The Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request or direction of any of the Holders pursuant to this Indenture, unless such Holders shall have offered to the Trustee security or indemnity satisfactory to the Trustee against the costs, expenses and liabilities which might be incurred by it in compliance with such request or direction.

(g) The Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit, and, if the Trustee shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises of the Company, personally or by agent or attorney at the sole cost of the Company and shall incur no liability or additional liability of any kind by reason of such inquiry or investigation.

(h) The Trustee shall not be deemed to have notice of any Default or Event of Default unless a Trust Officer of the Trustee has actual knowledge thereof or unless written notice of any event which is in fact such a default is received by the Trustee at the Corporate Trust Office, and such notice references the Securities and this Indenture.

(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 to each agent, custodian and other Person employed to act hereunder.

SECTION 9.3. INDIVIDUAL RIGHTS OF TRUSTEE.

The Trustee in its individual or any other capacity may become the owner or pledgee of Securities and may otherwise deal with the Company or an Affiliate of the Company with the same rights it would have if it were not Trustee. Any Agent may do the same with like rights. However, the Trustee is subject to Sections 9.10 and 9.11.

SECTION 9.4. TRUSTEE’S DISCLAIMER.

The Trustee makes no representation as to the validity or adequacy of this Indenture or the Securities, it shall not be accountable for the Company’s use of the proceeds from the Securities, and it shall not be responsible for any statement in the Securities other than its certificate of authentication.

SECTION 9.5. NOTICE OF DEFAULT OR EVENTS OF DEFAULT.

If a default or an Event of Default occurs and is continuing and if it is known to the Trustee, the Trustee shall mail to each Securityholder notice of the default or Event of Default within 90 days after it occurs. However, the Trustee may withhold the notice if and so long as a committee of its Trust Officers in good faith determines that withholding notice is in the interests of Holders, except in the case of a default or an Event of Default in payment of the principal of or interest (including any Additional Interest and/or Extension Fee), if any, on any Security.

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SECTION 9.6. REPORTS BY TRUSTEE TO HOLDERS.

If such report is required by TIA Section 313, within 60 days after each May 15, beginning with the May 15 following the date of this Indenture, the Trustee shall mail to each Holder a brief report dated as of such May 15 that complies with TIA Section 313(a). The Trustee also shall comply with TIA Section 313(b)(2) and (c).

A copy of each report at the time of its mailing to Holder shall be mailed to the Company and filed with the SEC and each stock exchange, if any, on which the Securities are listed. The Company shall notify the Trustee whenever the Securities become listed on any stock exchange or listed or admitted to trading on any quotation system and any changes in the stock exchanges or quotation systems on which the Securities are listed or admitted to trading and of any delisting thereof.

SECTION 9.7. COMPENSATION AND INDEMNITY.

The Company shall pay to the Trustee from time to time such compensation (as agreed to from time to time by the Company and the Trustee in writing) for its services (which compensation shall not be limited by any provision of law in regard to the compensation of a trustee of an express trust). The Company shall reimburse the Trustee upon request for all reasonable disbursements, expenses and advances incurred or made by it. Such expenses may include the reasonable compensation, disbursements and expenses of the Trustee’s agents and counsel.

The Company shall indemnify the Trustee or any predecessor Trustee (which for purposes of this Section 9.7 shall include its officers, directors, employees and agents) for, and hold it harmless against, any and all loss, liability or expense including taxes (other than taxes based upon, measured by or determined by the income of the Trustee), (including reasonable legal fees and expenses) incurred by it in connection with the acceptance or administration of its duties under this Indenture or any action or failure to act as authorized or within the discretion or rights or powers conferred upon the Trustee hereunder including the reasonable costs and expenses of the Trustee and its counsel in defending itself against any claim or liability in connection with the exercise or performance of any of its powers or duties hereunder. The Trustee shall notify the Company promptly of any claim asserted against the Trustee for which it may seek indemnity. The Company need not pay for any settlement effected without its prior written consent, which shall not be unreasonably withheld.

The Company need not reimburse the Trustee for any expense or indemnify it against any loss or liability incurred by it resulting from its gross negligence or bad faith.

To secure the Company’s payment obligations in this Section 9.7, the Trustee shall have a senior claim to which the Securities are hereby made subordinate on all money or property held or collected by the Trustee, except such money or property held in trust to pay the principal of and interest (including any Additional Interest and/or Extension Fee), if any, on the Securities. The obligations of the Company under this Section 9.7 shall survive the satisfaction and discharge of this Indenture or the resignation or removal of the Trustee.

When the Trustee incurs expenses or renders services after an Event of Default specified in clause (9) or (10) of Section 8.1 occurs, the expenses and the compensation for the services are intended to constitute expenses of administration under any Bankruptcy Law. The provisions of this Section shall survive the termination of this Indenture.

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SECTION 9.8. REPLACEMENT OF TRUSTEE.

The Trustee may resign by so notifying the Company. The Holders of a majority in aggregate principal amount of the Securities then outstanding may remove the Trustee by so notifying the Trustee and may, with the Company’s written consent, appoint a successor Trustee. The Company may remove the Trustee if:

(1) the Trustee fails to comply with Section 9.10;

(2) the Trustee is adjudged a bankrupt or an insolvent;

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

(4) the Trustee becomes incapable of acting.

If the Trustee resigns or is removed or if a vacancy exists in the office of Trustee for any reason, the Company shall promptly appoint a successor Trustee. The resignation or removal of a Trustee shall not be effective until a successor Trustee shall have delivered the written acceptance of its appointment as described below.

If a successor Trustee does not take office within 45 days after the retiring Trustee resigns or is removed, the retiring Trustee, the Company or the Holders of 10% in principal amount of the Securities then outstanding may petition any court of competent jurisdiction for the appointment of a successor Trustee at the expense of the Company.

If the Trustee fails to comply with Section 9.10, any Holder may petition any court of competent jurisdiction for the removal of the Trustee and the appointment of a successor Trustee.

A successor Trustee shall deliver a written acceptance of its appointment to the retiring Trustee and to the Company. Immediately after that, the retiring Trustee shall transfer all property held by it as Trustee to the successor Trustee and be released from its obligations (exclusive of any liabilities that the retiring Trustee may have incurred while acting as Trustee) hereunder, the resignation or removal of the retiring Trustee shall become effective, and the successor Trustee shall have all the rights, powers and duties of the Trustee under this Indenture. A successor Trustee shall mail notice of its succession to each Holder.

A retiring Trustee shall not be liable for the acts or omissions of any successor Trustee after its succession.

Notwithstanding replacement of the Trustee pursuant to this Section 9.8, the Company’s obligations under Section 9.7 shall continue for the benefit of the retiring Trustee.

SECTION 9.9. SUCCESSOR TRUSTEE BY MERGER, ETC.

If the Trustee consolidates with, merges or converts into, or transfers all or substantially all of its corporate trust assets (including the administration of this Indenture) to, another corporation, the resulting, surviving or transferee corporation, without any further act, shall be the successor Trustee,provided such transferee corporation shall qualify and be eligible under Section 9.10. Such successor Trustee shall promptly mail notice of its succession to the Company and each Holder.

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SECTION 9.10. ELIGIBILITY; DISQUALIFICATION.

The Trustee shall always satisfy the requirements of paragraphs (1), (2) and (5) of TIA Section 310(a). The Trustee (or its parent holding company) shall have a combined capital and surplus of at least $50,000,000. If at any time the Trustee shall cease to satisfy any such requirements, it shall resign immediately in the manner and with the effect specified in this Article 9. The Trustee shall be subject to the provisions of TIA Section 310(b). Nothing herein shall prevent the Trustee from filing with the SEC the application referred to in the penultimate paragraph of TIA Section 310(b).

SECTION 9.11. PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY.

The Trustee shall comply with TIA Section 311(a), excluding any creditor relationship listed in TIA Section 311(b). A Trustee who has resigned or been removed shall be subject to TIA Section 311(a) to the extent indicated therein.

ARTICLE 10

SATISFACTION AND DISCHARGE OF INDENTURE

SECTION 10.1. SATISFACTION AND DISCHARGE OF INDENTURE.

This Indenture shall cease to be of further effect (except as to any surviving rights of conversion, registration of transfer or exchange of Securities herein expressly provided for and except as further provided below), and the Trustee, on demand of and at the expense of the Company, shall execute proper instruments acknowledging satisfaction and discharge of this Indenture, when

(1) either

(A) all Securities theretofore authenticated and delivered (other than (i) Securities which have been destroyed, lost or stolen and which have been replaced or paid as provided in Section 2.7 and (ii) Securities for whose payment money has theretofore been deposited in trust and thereafter repaid to the Company as provided in Section 10.3) have been delivered to the Trustee for cancellation; or

(B) all such Securities not theretofore delivered to the Trustee for cancellation,

(i) have become due and payable, or

(ii) will become due and payable at the Final Maturity Date within one year,

and the Company has irrevocably deposited or caused to be irrevocably deposited cash with the Trustee or a Paying Agent (other than the Company or any of its Affiliates) as trust funds in trust for the purpose of and in an amount sufficient to pay and discharge the entire indebtedness on such Securities not theretofore delivered to the Trustee for cancellation, for principal and interest (including any Additional Interest and/or Extension Fee), if any, to the date of such deposit (in the case of Securities which have become due and payable) or the Final Maturity Date;

(2) the Company has paid or caused to be paid all other sums payable hereunder by the Company; and

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(3) the Company has delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that all conditions precedent herein relating to the satisfaction and discharge of this Indenture have been complied with.

Notwithstanding the satisfaction and discharge of this Indenture, the obligations of the Company to the Trustee under Section 9.7 shall survive and, if money shall have been deposited with the Trustee pursuant to subclause (B) of clause (1) of this Section, the provisions of Sections 2.3, 2.4, 2.5, 2.6, 2.7, 2.12, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7 and 12.5, Article 4, the last paragraph of Section 6.2 and this Article 10, shall survive until the Securities have been paid in full.

SECTION 10.2. APPLICATION OF TRUST MONEY.

Subject to the provisions of Section 10.3, the Trustee or a Paying Agent shall hold in trust, for the benefit of the Holders, all money deposited with it pursuant to Section 10.1 and shall apply the deposited money in accordance with this Indenture and the Securities to the payment of the principal of and interest (including any Additional Interest and/or Extension Fee), if any, on the Securities.

SECTION 10.3. REPAYMENT TO COMPANY.

The Trustee and each Paying Agent shall promptly pay to the Company upon request any excess money (i) deposited with them pursuant to Section 10.1 and (ii) held by them at any time.

The Trustee and each Paying Agent shall pay to the Company upon request any money held by them for the payment of principal or interest (including any Additional Interest and/or Extension Fee), if any, that remains unclaimed for two years after a right to such money has matured;provided,however, that the Trustee or such Paying Agent, before being required to make any such payment, may at the expense of the Company cause to be mailed to each Holder entitled to such money notice that such money remains unclaimed and that after a date specified therein, which shall be at least 30 days from the date of such mailing, any unclaimed balance of such money then remaining will be repaid to the Company. After payment to the Company, Holders entitled to money must look to the Company for payment as general creditors unless an applicable abandoned property law designates another person.

SECTION 10.4. REINSTATEMENT.

If the Trustee or any Paying Agent is unable to apply any money in accordance with Section 10.2 by reason of any legal proceeding or by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, then the Company’s obligations under this Indenture and the Securities shall be revived and reinstated as though no deposit had occurred pursuant to Section 10.1 until such time as the Trustee or such Paying Agent is permitted to apply all such money in accordance with Section 10.2;provided,however, that if the Company has made any payment of the principal of or interest (including any Additional Interest and/or Extension Fee), if any, on any Securities because of the reinstatement of its obligations, the Company shall be subrogated to the rights of the Holders of such Securities to receive any such payment from the money held by the Trustee or such Paying Agent.

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ARTICLE 11

AMENDMENTS, SUPPLEMENTS AND WAIVERS

SECTION 11.1. WITHOUT CONSENT OF HOLDERS.

The Company and the Trustee may amend or supplement this Indenture or the Securities without notice to or consent of any Securityholder:

(a) to comply with Sections 4.11 and 7.1;

(b) to cure any ambiguity, defect or inconsistency;

(c) to make any other change that does not adversely affect the rights of any Securityholder;

(d) to comply with the provisions of the TIA;

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

(f) to reopen this Indenture and issue Additional Securities in accordance with the provisions of Section 2.2 hereof; or

(g) to appoint a successor Trustee.

SECTION 11.2. WITH CONSENT OF HOLDERS.

The Company and the Trustee may amend or supplement this Indenture or the Securities with the written consent of the Holders of at least a majority in aggregate principal amount of the Securities then outstanding. The Holders of at least a majority in aggregate principal amount of the Securities then outstanding may waive compliance in a particular instance by the Company with any provision of this Indenture or the Securities without notice to any Securityholder. However, notwithstanding the foregoing but subject to Section 11.4, without the written consent of each Securityholder affected, an amendment, supplement or waiver, including a waiver pursuant to Section 8.4, may not:

(a) change the stated maturity of the principal of any Security;

(b) reduce the principal amount of, or any premium or interest (including any Additional Interest and/or Extension Fee), if any, on, any Security;

(c) reduce the amount of principal payable upon acceleration of the maturity of any Security;

(d) change the make-whole premium payable pursuant to Section 4.1(h) hereof;

(e) change the place or currency of payment of principal of, or any premium or interest (including any Additional Interest and/or Extension Fee), if any, on, any Security;

(f) impair the right to institute suit for the enforcement of any payment on, or with respect to, any Security;

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(g) modify the provisions with respect to the purchase right of Holders pursuant to Article 3 upon a Designated Event in a manner adverse to Holders;

(h) adversely affect the right of Holders to convert Securities other than as provided in or under Article 4 of this Indenture;

(i) reduce the percentage of the aggregate principal amount of the outstanding Securities whose Holders must consent to a modification or amendment;

(j) reduce the percentage of the aggregate principal amount of the outstanding Securities necessary for the waiver of compliance with certain provisions of this Indenture or the waiver of certain defaults under this Indenture; and

(k) modify any of the provisions of this Section or Section 8.4, except to increase any such percentage or to provide that certain provisions of this Indenture cannot be modified or waived without the consent of the Holder of each outstanding Security affected thereby.

It shall not be necessary for the consent of the Holders under this Section 11.2 to approve the particular form of any proposed amendment, supplement or waiver, but it shall be sufficient if such consent approves the substance thereof.

After an amendment, supplement or waiver under this Section 11.2 becomes effective, the Company shall mail to the Holders affected thereby a notice briefly describing the amendment, supplement or waiver. Any failure of the Company to mail such notice, or any defect therein, shall not, however, in any way impair or affect the validity of any such amendment, supplement or waiver.

SECTION 11.3. COMPLIANCE WITH TRUST INDENTURE ACT.

Every amendment to or supplement of this Indenture or the Securities shall comply with the TIA as in effect at the date of such amendment or supplement.

SECTION 11.4. REVOCATION AND EFFECT OF CONSENTS.

Until an amendment, supplement or waiver becomes effective, a consent to it by a Holder is a continuing consent by the Holder and every subsequent Holder of a Security or portion of a Security that evidences the same debt as the consenting Holder’s Security, even if notation of the consent is not made on any Security. However, any such Holder or subsequent Holder may revoke the consent as to its Security or portion of a Security if the Trustee receives the notice of revocation before the date the amendment, supplement or waiver becomes effective.

After an amendment, supplement or waiver becomes effective, it shall bind every Securityholder, unless it makes a change described in any of clauses (a) through (k) of Section 11.2. In that case the amendment, supplement or waiver shall bind each Holder of a Security who has consented to it and every subsequent Holder of a Security or portion of a Security that evidences the same debt as the consenting Holder’s Security.

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SECTION 11.5. NOTATION ON OR EXCHANGE OF SECURITIES.

If an amendment, supplement or waiver changes the terms of a Security, the Trustee may require the Holder of the Security to deliver it to the Trustee. The Trustee may place an appropriate notation on the Security about the changed terms and return it to the Holder. Alternatively, if the Company or the Trustee so determines, the Company in exchange for the Security shall issue and the Trustee shall authenticate a new Security that reflects the changed terms.

SECTION 11.6. TRUSTEE TO SIGN AMENDMENTS, ETC.

The Trustee shall sign any amendment or supplemental indenture authorized pursuant to this Article 11 if the amendment or supplemental indenture does not adversely affect the rights, duties, liabilities or immunities of the Trustee. If it does, the Trustee may, in its sole discretion, but need not sign it. In signing or refusing to sign such amendment or supplemental indenture, the Trustee shall be entitled to receive and, subject to Section 9.1, shall be fully protected in relying upon, an Opinion of Counsel stating that such amendment or supplemental indenture is authorized or permitted by this Indenture. The Company may not sign an amendment or supplement indenture until the Board of Directors approves it.

SECTION 11.7. EFFECT OF SUPPLEMENTAL INDENTURES.

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 Securities theretofore or thereafter authenticated and delivered hereunder shall be bound thereby.

ARTICLE 12

MISCELLANEOUS

SECTION 12.1. TRUST INDENTURE ACT CONTROLS.

If any provision of this Indenture limits, qualifies or conflicts with the duties imposed by any of Sections 310 to 317, inclusive, of the TIA through operation of Section 318(c) thereof, such imposed duties shall control.

SECTION 12.2. NOTICES.

Any demand, authorization notice, request, consent or communication shall be given in writing and delivered in person or mailed by first-class mail, postage prepaid, addressed as follows or transmitted by facsimile transmission (confirmed by delivery in person or mail by first-class mail, postage prepaid, or by guaranteed overnight courier) to the following facsimile numbers:

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If to the Company, to:

Prior to March 12, 2007:

Magma Design Automation, Inc.

5460 Bayfront Plaza

Santa Clara, California 95054

Attention: Chief Financial Officer

Facsimile No.: (408) 715-2557

On or after March 12, 2007:

Magma Design Automation, Inc.

1650 Technology Drive

San Jose, CA 95110

Attention: Chief Financial Officer

Facsimile No.: (408) 715-2557

With a copy to:

O’Melveny & Myers LLP

Embarcardero Center West

275 Battery Street, Suite 2600

San Francisco, CA 94111

Attention: Karen Dreyfus, Esq.

Facsimile No.: (415) 984-8701

If to the Trustee, to:

U.S. Bank National Association

633 West Fifth St., 24th Floor

Los Angeles, California 90071

Attn: Corporate Trust Services (Magma Design Automation, Inc. — 2.00% Convertible

Senior Notes due May 15, 2010)

Facsimile No.: (213) 615-6197

Such notices or communications shall be effective when received.

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

Any notice or communication mailed to any Holder shall be mailed by first-class mail or delivered by an overnight delivery service to it at its address shown on the register kept by the Primary Registrar;provided,however that any notice or communication with respect to Securities held by the Depositary on behalf of the Holders may be made by delivering such notice or communication to the Depositary and having such notice or communication posted to such Holders on the systems of the Depositary.

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

SECTION 12.3. COMMUNICATIONS BY HOLDERS WITH OTHER HOLDERS.

Holders may communicate pursuant to TIA Section 312(b) with other Holders with respect to their rights under this Indenture or the Securities. The Company, the Trustee, the Registrar and any other person shall have the protection of TIA Section 312(c).

SECTION 12.4. CERTIFICATE AND OPINION AS TO CONDITIONS PRECEDENT.

(a) 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 at the request of the Trustee:

(1) an Officers’ Certificate stating that, in the opinion of the signers, all conditions precedent (including any covenants, compliance with which constitutes a condition precedent), if any, provided for in this Indenture relating to the proposed action have been complied with; and

(2) an Opinion of Counsel stating that, in the opinion of such counsel, all such conditions precedent (including any covenants, compliance with which constitutes a condition precedent) have been complied with.

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

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

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

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

(4) a statement as to whether or not, in the opinion of such person, such condition or covenant has been complied with;

provided however, that with respect to matters of fact an Opinion of Counsel may rely on an Officers’ Certificate or certificates of public officials.

SECTION 12.5. RECORD DATE FOR VOTE OR CONSENT OF HOLDERS.

The Company (or, in the event deposits have been made pursuant to Section 10.1, the Trustee) may set a record date for purposes of determining the identity of Holders entitled to vote or consent to any action by vote or consent authorized or permitted under this Indenture, which record date shall not be more than thirty (30) days prior to the date of the commencement of solicitation of such action. Notwithstanding the

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provisions of Section 11.4, if a record date is fixed, those persons who were Holders of Securities at the close of business on such record date (or their duly designated proxies), and only those persons, shall be entitled to take such action by vote or consent or to revoke any vote or consent previously given, whether or not such persons continue to be Holders after such record date.

SECTION 12.6. RULES BY TRUSTEE, PAYING AGENT, REGISTRAR AND CONVERSION AGENT.

The Trustee may make reasonable rules (not inconsistent with the terms of this Indenture) for action by or at a meeting of Holders. Any Registrar, Paying Agent or Conversion Agent may make reasonable rules for its functions.

SECTION 12.7. LEGAL HOLIDAYS.

A “Legal Holiday” is a Saturday, Sunday or a day on which state or federally chartered banking institutions in New York, New York and the state in which the Corporate Trust Office is located are not required to be open. If a payment date is a Legal Holiday, payment shall be made on the next succeeding day that is not a Legal Holiday, and no interest (including any Additional Interest and/or Extension Fee), if any, shall accrue for the intervening period.

SECTION 12.8. GOVERNING LAW.

This Indenture and the Securities shall be governed by, and construed in accordance with, the laws of the State of New York, without regard to principles of conflicts of laws.

SECTION 12.9. NO ADVERSE INTERPRETATION OF OTHER AGREEMENTS.

This Indenture may not be used to interpret another indenture, loan or debt agreement of the Company or a Subsidiary of the Company. Any such indenture, loan or debt agreement may not be used to interpret this Indenture.

SECTION 12.10. NO RECOURSE AGAINST OTHERS.

All liability described in paragraph 15 of the Securities of any director, officer, employee or stockholder, as such, of the Company is waived and released.

SECTION 12.11. SUCCESSORS.

All agreements of the Company in this Indenture and the Securities shall bind its successor. All agreements of the Trustee in this Indenture shall bind its successor.

SECTION 12.12. MULTIPLE COUNTERPARTS.

The parties may sign multiple counterparts of this Indenture. Each signed counterpart shall be deemed an original, but all of them together represent the same agreement.

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SECTION 12.13. SEPARABILITY.

In case any provisions in this Indenture or in the Securities 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 12.14. TABLE OF CONTENTS, HEADINGS, ETC.

The table of contents, cross-reference sheet and headings of the Articles and Sections of this Indenture have been inserted for convenience of reference only, are not to be considered a part hereof, and shall in no way modify or restrict any of the terms or provisions hereof.

ARTICLE 13

REDEMPTION OF SECURITIES

SECTION 13.1. RIGHT OF REDEMPTION.

Commencing on May 20, 2009, the Company may at its option redeem the Securities, in whole or in part, at any time upon notice as set forth in Article 13.3 at a redemption price (the “Redemption Price”) (expressed as a percentage of the principal amount) of 100% of the principal amount of the Securities redeemed, together with accrued interest (including any Additional Interest and/or Extension Fee), if any, to, but excluding, the Redemption Date;provided,however, if such Redemption Date is an Interest Payment Date, the interest due on such Interest Payment Date shall be payable to the Holder of the Securities called for redemption registered as such on the relevant Record Date and the Redemption Price shall not include such interest payment.

In the event of a redemption of the Securities, the Company will not be required (a) to register the transfer or exchange of Securities for a period of 15 days immediately preceding the date notice is given identifying the serial numbers of the Securities called for such redemption or (b) to register the transfer or exchange of any Security, or portion thereof, called for redemption.

SECTION 13.2. APPLICABILITY OF ARTICLE.

Redemption of Securities at the election of the Company or otherwise, as permitted or required by any provision of the Securities or this Indenture, shall be made in accordance with such provision and this Article 13.

SECTION 13.3. ELECTION TO REDEEM; NOTICE TO TRUSTEE.

The election of the Company to redeem any Securities shall be evidenced by a resolution of the Board of Directors. Subject to Section 13.5, in case of any redemption at the election of the Company of any of the Securities, the Company shall, at least 30 days prior to the Redemption Date fixed by the Company (unless a shorter notice shall be satisfactory to the Trustee), notify the Trustee in writing of such Redemption Date and the principal amount of Securities to be redeemed.

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SECTION 13.4. SELECTION BY TRUSTEE OF SECURITIES TO BE REDEEMED.

If less than all the Securities are to be redeemed, the Trustee shall select the particular Securities to be redeemed (in principal amounts of $1,000 or integral multiples thereof), from the outstanding Securities by a method that complies with the requirements of any exchange on which the Securities are listed, or, if the Securities are not listed on an exchange, on a pro rata basis or by lot or in accordance with any other method the Trustee considers fair and appropriate.

If any Security selected for partial redemption is converted in part before termination of the conversion right with respect to the portion of the Security so selected, the converted portion of such Security shall be deemed (so far as may be) to be the portion selected for redemption; provided, however, that the Holder of such Security so converted and deemed redeemed shall not be entitled to any interest payment as a result of such deemed redemption in excess of such interest as such Security would have otherwise been entitled to receive upon conversion of such Security. Securities that have been converted during a selection of Securities to be redeemed may be treated by the Trustee as outstanding for the purpose of such selection. The Trustee shall promptly notify the Company and each Primary Registrar in writing of the securities selected for redemption and, in the case of any Securities selected for partial redemption, the principal amount thereof to be redeemed.

For all purposes of this Indenture, unless the context otherwise requires, all provisions relating to the redemption of Securities shall relate, in the case of any Securities redeemed or to be redeemed only in part, to the portion of the principal amount of such Securities which has been or is to be redeemed.

SECTION 13.5. NOTICE OF REDEMPTION.

Notice of redemption shall be given in the manner provided in Section 12.2 to the Holders of Securities to be redeemed not less than 20 nor more than 60 days prior to the Redemption Date, and such notice shall be irrevocable.

All notices of redemption shall state:

(a) the Redemption Date;

(b) the Redemption Price and accrued interest (including any Additional Interest and/or Extension Fee), if any, to, but excluding, the Redemption Date;

(c) if less than all Securities then outstanding are to be redeemed, the aggregate principal amount of Securities to be redeemed and the aggregate principal amount of Securities which will be outstanding after such partial redemption;

(d) that on the Redemption Date the Redemption Price and accrued interest (including any Additional Interest and/or Extension Fee), if any, to, but excluding, the Redemption Date, will become due and payable upon each such Security to be redeemed, and that interest thereon shall cease to accrue on and after said date;

(e) the Conversion Rate, the date on which the right to convert the Securities to be redeemed will terminate and the places where such Securities may be surrendered for conversion; and

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(f) the place or places where such Securities are to be surrendered for payment of the Redemption Price and accrued interest (including any Additional Interest and/or Extension Fee), if any, to, but excluding, the Redemption Date.

In case of a partial redemption, the notice shall specify the serial and CUSIP numbers (if any) and the portions thereof called for redemption and that transfers and exchanges may occur on or prior to the Redemption Date.

Notice of redemption of Securities to be redeemed at the election of the Company shall be given by the Company or, at the Company’s written request, by the Trustee in the name of and at the expense of the Company. Notice of redemption of Securities to be redeemed at the election of the Company received by the Trustee shall be given by the Trustee to each Paying Agent in the name of and at the expense of the Company.

SECTION 13.6. DEPOSIT OF REDEMPTION PRICE.

On or prior to the Redemption Date, the Company shall deposit with the Trustee (or, if the Company is acting as its own Paying Agent, segregate and hold in trust) an amount of money (which shall be in immediately available funds on such Redemption Date) sufficient to pay the Redemption Price and (except if the Redemption Date shall be an Interest Payment Date) accrued interest (including any Additional Interest and/or Extension Fee), if any, to, but excluding, the Redemption Date on all the Securities which are to be redeemed on that date, other than any Securities called for redemption on that date which have been converted prior to the date of such deposit.

If any Security called for redemption is converted, any money deposited with the Trustee or so segregated and held in trust for the redemption of such Security shall (subject to any right of the Holder of such Security or any predecessor Security to receive interest as provided in paragraph 6 of the form of Security attached hereto asExhibit A) be returned to the Company on company request or, if then held by the Company, shall be discharged from such trust.

SECTION 13.7. SECURITIES PAYABLE ON REDEMPTION DATE.

Notice of redemption having been given as aforesaid, the Securities so to be redeemed shall, on the Redemption Date, become due and payable at the Redemption Price therein specified and from and after such date (unless the Company shall default in the payment of the Redemption Price, including accrued interest) such Securities shall cease to bear interest and such Securities shall cease at the close of business on the Business Day immediately preceding the date fixed for redemption to be convertible into common stock and, except as provided in Sections 10.2 and 10.3, to be entitled to any benefit or security under this Indenture. surrender of any Security for redemption in accordance with said notice such Security shall be paid by the Company at the Redemption Price together with accrued and unpaid interest (including any Additional Interest and/or Extension Fee), if any, to, but excluding, the Redemption Date;provided,however, that installments of interest on Securities whose stated maturity is on or prior to the Redemption Date shall be payable to the Holders of such Securities, or one or more predecessor Securities, registered as such on the relevant Record Date according to their terms and the provisions of Article 2 of this Indenture.

If any Security called for redemption shall not be so paid upon surrender thereof for redemption, the principal amount of, premium, if any, and, to the extent permitted by applicable law, accrued interest on such Security shall, until paid, bear interest from the Redemption Date at the rate borne by the Securities and such Security shall remain convertible until the Redemption Price of such Security (or portion thereof, as the case may be) shall have been paid or duly provided for.

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Any Security that is to be redeemed only in part shall be surrendered at the Corporate Trust Office or an office or agency of the Company designated for that purpose (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 his attorney duly authorized in writing), and the Company shall execute, and the Trustee shall authenticate and make available for delivery to the Holder of such Security without service charge, a new Security or Securities, of any authorized denomination as requested by such Holder, in aggregate principal amount equal to and in exchange for the unredeemed portion of the principal of the Security so surrendered.

SECTION 13.8. CONVERSION ARRANGEMENT ON CALL FOR REDEMPTION.

In connection with any redemption of Securities, the Company may arrange for the purchase and conversion of any Securities by an agreement with one or more investment bankers or other purchasers (the “Purchasers”) to purchase such Securities by paying to the Trustee in trust for the Holders, on or before the Redemption Date, an amount not less than the applicable Redemption Price, together with interest accrued to, but excluding, the Redemption Date, of such Securities. Notwithstanding anything to the contrary contained in this Article 13 the obligation of the Company to pay the Redemption Price, together with interest accrued to, but excluding, the Redemption Date, 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 shall be filed with the Trustee prior to the close of business on the Business Day immediately prior to the Redemption Date), any Securities called for redemption that are 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, and consistent with any agreement or agreements with such Purchasers, to be acquired by such Purchasers from such Holders and (notwithstanding anything to the contrary contained in Article 4) surrendered by such Purchasers for conversion, all as of immediately prior to the close of business on the Redemption Date (and the right to convert any such Securities shall be extended through such time), subject to payment of the above amount as aforesaid. At the direction of the Company, the Trustee shall hold and dispose of any such amount paid to it by the Purchasers to the Holders in the same manner as it would monies deposited with it by the Company for the redemption of Securities. Without the Trustee’s prior written consent, no arrangement between the Company and such Purchasers for the purchase and conversion of any Securities shall increase or otherwise affect any of the powers, duties, responsibilities or obligations of the Trustee as set forth in this Indenture, and the Company agrees to indemnify the Trustee from, and hold it harmless against, any loss, liability or expense arising out of or in connection with any such arrangement for the purchase and conversion of any Securities between the Company and such Purchasers, including the costs and expenses, including reasonable legal fees, incurred by the Trustee in the defense of any claim or liability arising out of or in connection with the exercise or performance of any of its powers, duties, responsibilities or obligations under this Indenture.

[SIGNATURE PAGE FOLLOWS]

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IN WITNESS WHEREOF, the parties hereto have hereunto set their hands as of the date and year first above written.

MAGMA DESIGN AUTOMATION, INC.

By:

Name:

Title:

U.S. BANK NATIONAL ASSOCIATION, as Trustee

By:

Name:

Title:

Signature Page to Indenture

A-1

EXHIBIT A

[FORM OF FACE OF SECURITY]

FOR PURPOSES OF SECTIONS 1272, 1273 AND 1275 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED, THIS SECURITY IS BEING ISSUED WITH ORIGINAL ISSUE DISCOUNT. THE COMPANY AGREES TO PROVIDE PROMPTLY TO THE HOLDER OF THIS SECURITY, UPON WRITTEN REQUEST, THE ISSUE PRICE, AMOUNT OF ORIGINAL ISSUE DISCOUNT, ISSUE DATE AND YIELD TO MATURITY. ANY SUCH WRITTEN REQUEST SHOULD BE SENT TO THE COMPANY AT THE FOLLOWING ADDRESS: [COMPANY NAME AND ADDRESS] ATTENTION: [TITLE OF PERSON TO CONTACT, E.G., VICE PRESIDENT OF FINANCE].

[UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY TO MAGMA DESIGN AUTOMATION, INC. (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. THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY IS EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITARY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE AND, UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR SECURITIES IN DEFINITIVE FORM, THIS SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE 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.]¹

[THIS SECURITY (OR ITS PREDECESSOR) WAS ORIGINALLY ISSUED IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER THE UNITED STATES SECURITIES ACT OF 1933 (THE “SECURITIES ACT”), AND THIS SECURITY AND THE SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION THEREOF MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER OF THIS SECURITY IS HEREBY NOTIFIED THAT THE SELLER OF THIS SECURITY MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER.]¹

¹ These paragraphs should be included only if the Security is a Global Security.

A-2

THE HOLDER OF THIS SECURITY AGREES FOR THE BENEFIT OF THE COMPANY THAT (A) THIS SECURITY AND THE SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION THEREOF MAY BE OFFERED, RESOLD, PLEDGED OR OTHERWISE TRANSFERRED, ONLY (I) IN THE UNITED STATES TO A PERSON WHOM THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, (II) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH RULE 904 UNDER THE SECURITIES ACT, (III) PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER (IF AVAILABLE) OR (IV) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT, IN EACH OF CASES (I) THROUGH (IV) IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES, AND (B) THE HOLDER WILL, AND EACH SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER OF THIS SECURITY FROM IT OF THE RESALE RESTRICTIONS REFERRED TO IN (A) ABOVE. IN ANY CASE THE HOLDER HEREOF WILL NOT, DIRECTLY OR INDIRECTLY, ENGAGE IN ANY HEDGING TRANSACTION WITH REGARD TO THE SECURITIES EXCEPT AS PERMITTED BY THE SECURITIES ACT.]²

[THE HOLDER OF THIS SECURITY IS ENTITLED TO THE BENEFITS OF A REGISTRATION RIGHTS AGREEMENT (AS SUCH TERM IS DEFINED IN THE INDENTURE REFERRED TO ON THE REVERSE HEREOF) AND, BY ITS ACCEPTANCE HEREOF, AGREES TO BE BOUND BY AND TO COMPLY WITH THE PROVISIONS OF SUCH REGISTRATION RIGHTS AGREEMENT.]²

² These paragraphs to be included only if the Security is a Restricted Security.

A-3

MAGMA DESIGN AUTOMATION, INC.

CUSIP: R-                

2.00% CONVERTIBLE SENIOR NOTES DUE MAY 15, 2010

Magma Design Automation, Inc., a Delaware corporation (the “Company”, which term shall include any successor corporation under the Indenture referred to on the reverse hereof), promises to pay to                                                         , or registered assigns, the principal sum of                                                             Dollars ($                    ) on May 15, 2010 [or such greater or lesser amount as is indicated on the Schedule of Exchanges of Securities on the other side of this Security].³

Interest Payment Dates: May 15 and November 15

Record Dates: May 1 and November 1

This Security is convertible as specified on the other side of this Security. Additional provisions of this Security are set forth on the other side of this Security.

SIGNATURE PAGE FOLLOWS

³ This phrase should be included only if the Security is a global Security.

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

MAGMA DESIGN AUTOMATION, INC.

By:

Name:

Title:

Attest:

Name:

Title:

Dated:

Trustee’s Certificate of Authentication: This is one of the Securities referred to in the within-mentioned Indenture.

U.S. BANK NATIONAL ASSOCIATION,

as Trustee

Authorized Signatory

By:

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[FORM OF REVERSE SIDE OF SECURITY]

MAGMA DESIGN AUTOMATION, INC.

2.00% CONVERTIBLE SENIOR NOTES DUE MAY 15, 2010

1. INTEREST

Magma Design Automation, Inc., a Delaware corporation (the “Company”), promises to pay interest on the principal amount of this Security at the rate per annum shown above. The Company will pay interest semi-annually in arrears on May 15 and November 15 of each year (each, an “Interest Payment Date”), beginning May 15, 2007. Interest on the Securities will accrue from the most recent Interest Payment Date or, if no interest has been paid, from March 2, 2007. Interest (including any Additional Interest and/or Extension Fee), if any, will be computed on the basis of a 360-day year composed of twelve 30-day months. Capitalized terms used in the Security which are not otherwise defined herein shall have the meaning ascribed to such terms in the Indenture, dated March 5, 2007 (together with any supplemental indentures thereto, the “Indenture”), between the Company and U.S. Bank National Association (the “Trustee,” which term shall include any successor trustee under the Indenture hereinafter referred to).

2. METHOD OF PAYMENT

The Company will pay interest (including any Additional Interest and/or Extension Fee), if any, on this Security (except defaulted interest) to the person in whose name each Security is registered at the close of business on the May 1 or November 1 (whether or not a Business Day) immediately preceding the relevant Interest Payment Date (each, a “Record Date”) (other than with respect to a Security repurchased in connection with a Designated Event on a repurchase date, during the period from the close of business on a Record Date to (but excluding) the next succeeding Interest Payment Date, in which case accrued interest (including any Additional Interest and/or Extension Fee), if any, shall be payable (unless such Security or portion thereof is converted) to the holder of the Security or portion thereof repurchased in accordance with the applicable repurchase provisions of the Indenture). The Holder must surrender this Security to a Paying Agent to collect principal payments. The Company will pay the principal of, and interest (including any Additional Interest and/or Extension Fee), if any, on the Securities at the office or agency of the Company maintained for such purpose, in money of the United States that at the time of payment is legal tender for payment of public and private debts. Until otherwise designated by the Company, the Company’s office or agency maintained for such purpose will be the principal Corporate Trust Office (as defined in the Indenture) of the Trustee. The Company may, however, pay principal and interest (including any Additional Interest and/or Extension Fee), if any, in respect of any Certificated Security by check or wire payable in such money;provided,however, that a Holder with an aggregate principal amount in excess of $2,000,000 will be paid by wire transfer in immediately available funds at the election of such Holder if such Holder has provided wire transfer instructions to the Company at least ten (10) Business Days prior to the Interest Payment Date. The Company may mail an interest check, if any, to the Holder’s registered address. Notwithstanding the foregoing, so long as this Security is registered in the name of a Depositary or its nominee, all payments hereon shall be made by wire transfer of immediately available funds to the account of the Depositary or its nominee.

3. PAYING AGENT, REGISTRAR, CONVERSION AGENT AND BID SOLICITATION AGENT

Initially, the Trustee will act as Paying Agent, Registrar, Custodian, Conversion Agent and Bid Solicitation Agent. The Company may change any Paying Agent, Registrar, Conversion Agent or Bid Solicitation Agent without notice to the Holder. The Company or any of its Subsidiaries may, subject to certain limitations set forth in the Indenture, act as Paying Agent or Registrar.

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4. INDENTURE, LIMITATIONS

This Security is one of a duly authorized issue of Securities of the Company designated as its 2.00% Convertible Senior Notes due May 15, 2010 (the “Securities”), issued under the Indenture. The terms of this Security include those stated in the Indenture and those required by or made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended, as in effect on the date of the Indenture. This Security is subject to all such terms, and the Holder of this Security is referred to the Indenture and said Act for a statement of them.

The Securities are unsecured obligations of the Company. The aggregate principal amount of Initial Securities outstanding at any time may not exceed $47,439,000 in aggregate principal amount, except as provided in Section 2.7 of the Indenture. The Indenture pursuant to which this Security is issued provides that Additional Securities may be issued thereunder, if certain conditions are met. The Indenture does not limit other debt of the Company, whether secured or unsecured.

5. PURCHASE OF SECURITIES AT OPTION OF HOLDER UPON A DESIGNATED EVENT

At the option of the Holder and subject to the terms and conditions of the Indenture, the Company shall become obligated to purchase all or any part specified by the Holder (so long as the principal amount of such part is $1,000 or an integral multiple of $1,000 in excess thereof) of the Securities held by such Holder on the date that is thirty (30) Business Days after the occurrence of a Designated Event, at a purchase price equal to 100% of the principal amount of the Securities to be repurchased thereof together with accrued interest (including any Additional Interest and/or Extension Fee), if any, up to, but excluding, the Designated Event Purchase Date. The Holder shall have the right to withdraw any Designated Event Purchase Notice (in whole or in a portion thereof that is $1,000 or an integral multiple of $1,000 in excess thereof) at any time prior to the close of business on the Business Day next preceding the Designated Event Purchase Date by delivering a written notice of withdrawal to the Paying Agent in accordance with the terms of the Indenture.

6. CONVERSION

Subject to the obligation and the right of the Company to pay some or all of the conversion consideration in cash in accordance with Section 4.14 of the Indenture, and upon compliance with the provisions of the Indenture, including, without limitation, the provisions of Section 4.1(a) of the Indenture, and upon the occurrence of the events specified in the Indenture, the registered holder of this Security has the right at any time on or before the close of business on the last Trading Day prior to the Final Maturity Date (or in case this Security or any portion hereof is subject to a duly completed election for repurchase, on or before the close of business on the Designated Event Purchase Date (unless the Company defaults in payment due upon repurchase or such holder elects to withdraw the submission of such election to repurchase)) to convert the principal amount hereof, or any portion of such principal amount which is $1,000 or an integral multiple thereof.

The initial Conversion Price is $15.00 per share, subject to adjustment under certain circumstances as provided in the Indenture. The number of shares of Common Stock issuable upon conversion of a Security is determined by dividing the principal amount of the Security or portion thereof converted by the Conversion Price in effect on the Conversion Date. No fractional shares will be issued upon conversion; in lieu thereof, an amount will be paid in cash based upon the Closing Price (as defined in the Indenture) of the Common Stock on the Trading Day immediately prior to the Conversion Date.

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In lieu of delivery of some or all of the shares of Common Stock otherwise issuable upon notice of conversion of any Securities, at the Company’s option the Holders surrendering Securities for conversion will receive, for each $1,000 principal amount of Securities surrendered for conversion:

– cash in an amount equal to the lesser of (1) $1,000 and (2) the Conversion Value; and

– if the Conversion Value is greater than $1,000, a number of shares of Common Stock equal to the sum of the Daily Share Amounts, for each of the twenty consecutive Trading Days in the Conversion Reference Period, appropriately adjusted to reflect stock splits, stock dividends, combinations or similar events occurring during the Conversion Reference Period, subject to the Company’s right to deliver cash in lieu of all or a portion of such shares as set forth in Section 4.14 of the Indenture.

The Conversion Rate on any Securities surrendered in connection with a Designated Event may be increased by an amount, if any, determined in accordance with Section 4.1(h) of the Indenture.

To convert a Security, a Holder must (a) complete and manually sign the conversion notice set forth below and deliver such notice to a Conversion Agent, (b) surrender the Security to a Conversion Agent, (c) furnish appropriate endorsements and transfer documents if required by a Registrar or a Conversion Agent, and (d) pay any transfer or similar tax, if required. Securities so surrendered for conversion (in whole or in part) during the period from the close of business on any Record Date to the opening of business on the next succeeding Interest Payment Date, if any, (excluding Securities or portions thereof called for redemption by the Company or subject to purchase upon a Designated Event on a Designated Event Purchase Date, during the period beginning at the close of business on a Record Date and ending at the opening of business on the first Business Day after the next succeeding Interest Payment Date, if any, or if such Interest Payment Date, if any, is not a Business Day, the second such Business Day) shall also be accompanied by payment in funds acceptable to the Company of an amount equal to the interest (including any Additional Interest, but not the Extension Fee), if any, payable on such Interest Payment Date, if any, on the principal amount of such Security then being converted, and such interest, if any, shall be payable to such registered Holder notwithstanding the conversion of such Security, subject to the provisions of this Indenture relating to the payment of defaulted interest, if any, by the Company. If the Company defaults in the payment of interest payable on such Interest Payment Date, if any, the Company shall promptly repay such funds to such Holder. A Holder may convert a portion of a Security equal to $1,000 or any integral multiple thereof.

A Security in respect of which a Holder had delivered a Designated Event Purchase Notice exercising the option of such Holder to require the Company to purchase such Security may be converted only if the Designated Event Purchase Notice is withdrawn in accordance with the terms of the Indenture.

7. RANKING

The Securities shall be “Designated Senior Indebtedness” for purposes of the indenture governing the Company’s Zero Coupon Convertible Subordinated Notes due May 15, 2008.

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8. DENOMINATIONS, TRANSFER, EXCHANGE

The Securities are in registered form, without coupons, in denominations of $1,000 and integral multiples of $1,000. A Holder may register the transfer of or exchange Securities only in accordance with the Indenture. The Registrar may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and to pay any taxes or other governmental charges that may be imposed in relation thereto by law or permitted by the Indenture.

9. PERSONS DEEMED OWNERS

The Holder of a Security may be treated as the owner of it for all purposes.

10. UNCLAIMED MONEY

If money for the payment of principal or interest (including any Additional Interest and/or Extension Fee), if any, remains unclaimed for two years, the Trustee or Paying Agent will pay the money back to the Company at its written request, subject to applicable unclaimed property law. After that, Holders entitled to money must look to the Company for payment as general creditors unless an applicable abandoned property law designates another person.

11. AMENDMENT, SUPPLEMENT AND WAIVER

Subject to certain exceptions, the Indenture or the Securities may be amended or supplemented with the consent of the Holders of at least a majority in aggregate principal amount of the Securities then outstanding, and an existing default or Event of Default and its consequence or compliance with any provision of the Indenture or the Securities may be waived in a particular instance with the consent of the Holders of a majority in aggregate principal amount of the Securities then outstanding. Without the consent of or notice to any Holder, the Company and the Trustee may amend or supplement the Indenture or the Securities to, among other things, cure any ambiguity, defect or inconsistency or make any other change that does not adversely affect the rights of any Holder.

12. SUCCESSOR ENTITY

When a successor corporation assumes all the obligations of its predecessor under the Securities and the Indenture in accordance with the terms and conditions of the Indenture, the predecessor corporation (except in certain circumstances specified in the Indenture) shall be released from those obligations.

13. DEFAULTS AND REMEDIES

Under the Indenture, an Event of Default includes: (i) default for 30 days in payment of interest (including any Additional Interest and/or Extension Fee), if any, on any Security after the date that such interest becomes due and payable; (ii) default in payment of any principal (including, without limitation, any premium) on any Security after the date that such payment becomes due and payable; (iii) failure by the Company to comply with any of its other agreements contained in the Indenture or the Securities, which continues after for the period and after the notice specified in Section 8.1 of the Indenture; (iv) failure by the Company to pay the purchase price, when the same becomes due and payable; (v) failure by the Company to deliver all cash and any shares of Common Stock when such cash and Common Stock, if any, are required to be delivered upon conversion of a Security; (vi) failure by the Company to provide a Designated Event Purchase Notice when required by Section 3.2 of the Indenture; (vii) default in the payment of certain

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indebtedness of the Company or a Significant Subsidiary, (viii) failure by the Company to file annual or quarterly reports in accordance with Sections 6.2 or 6.6 of the Indenture or to comply with the requirements of Section 314(a)(1) of the Trust Indenture Act (subject to the requirements in the Indenture to provide notice and the extension rights provided to the Company in the Indenture) and (ix) certain events of bankruptcy, insolvency or reorganization of the Company or any Significant Subsidiary. If an Event of Default (other than as a result of certain events of bankruptcy, insolvency or reorganization of the Company) occurs and is continuing, the Trustee or the Holders of at least 25% in aggregate principal amount of the Securities then outstanding may declare all unpaid principal to the date of acceleration on the Securities then outstanding to be due and payable immediately, all as and to the extent provided in the Indenture. If an Event of Default occurs as a result of certain events of bankruptcy, insolvency or reorganization of the Company, unpaid principal of the Securities then outstanding shall become due and payable immediately without any declaration or other act on the part of the Trustee or any Holder, all as and to the extent provided in the Indenture. Holders may not enforce the Indenture or the Securities except as provided in the Indenture. The Trustee may require indemnity satisfactory to it before it enforces the Indenture or the Securities. Subject to certain limitations, Holders of a majority in aggregate principal amount of the Securities then outstanding may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from Holders notice of any continuing default (except a default in payment of principal or interest (including any Additional Interest and/or Extension Fee), if any) if it determines that withholding notice is in their interests. The Company is required to file periodic reports with the Trustee as to the presence or absence of default.

14. REDEMPTION

The Securities are subject to redemption at the option of the Company at any time on or after May 20, 2009, in whole or in part, upon not less than 20 nor more than 60 days’ notice to the Holders prior to the Redemption Date at a redemption price (the “Redemption Price”) (expressed as a percentage of the principal amount) of 100% of the principal amount of the Securities redeemed, together with accrued interest to, but excluding, the Redemption Date;provided,however, if such Redemption Date is an Interest Payment Date, the interest due on such Interest Payment Date shall be payable to the Holder of the Securities called for redemption registered as such on the relevant Record Date and the Redemption Price shall not include such interest payment.

In the event of a redemption of the Securities, the Company will not be required (a) to register the transfer or exchange of Securities for a period of 15 days immediately preceding the date notice is given identifying the serial numbers of the Securities called for such redemption or (b) to register the transfer or exchange of any Security, or portion thereof, called for redemption

15. TRUSTEE DEALINGS WITH THE COMPANY

U.S. Bank National Association, the Trustee under the Indenture, in its individual or any other capacity, may make loans to, accept deposits from and perform services for the Company or an Affiliate of the Company, and may otherwise deal with the Company or an Affiliate of the Company, as if it were not the 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 Securities or the Indenture nor for any claim based on, in respect of or by reason of such obligations or their creation. The Holder of this Security by accepting this Security waives and releases all such liability. The waiver and release are part of the consideration for the issuance of this Security.

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17. AUTHENTICATION

This Security shall not be valid until the Trustee or an authenticating agent manually signs the certificate of authentication on the other side of this Security.

18. ABBREVIATIONS AND DEFINITIONS

Customary abbreviations may be used in the name of the Holder 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 UGMA (= Uniform Gifts to Minors Act).

All terms defined in the Indenture and used in this Security but not specifically defined herein are defined in the Indenture and are used herein as so defined.

19. INDENTURE TO CONTROL; GOVERNING LAW

In the case of any conflict between the provisions of this Security and the Indenture, the provisions of the Indenture shall control. This Security shall be governed by, and construed in accordance with, the laws of the State of New York, without regard to principals of conflicts of law.

The Company will furnish to any Holder, upon written request and without charge, a copy of the Indenture. Requests may be made (i) if prior to March 12, 2007, to: Magma Design Automation, Inc., 5460 Bayfront Plaza, Santa Clara, CA 95054, (408) 565-7500, Attention: Investor Relations or (ii) if on or after March 12, 2007, to: Magma Design Automation, Inc., 1850 Technology Drive, San Jose, CA 95110, (408) 565-7500, Attention: Investor Relations.

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ASSIGNMENT FORM

To assign this Security, fill in the form below:

I or we assign and transfer this Security to

(Insert assignee’s soc. sec. or tax I.D. no.)

(Print or type assignee’s name, address and zip code)

and irrevocably appoint

agent to transfer this Security on the books of the Company. The agent may substitute another to act for him or her.

	Your Signature:
Date:
	(Sign exactly as your name appears on the other side of this Security)

*Signature guaranteed by:

By:

* The signature must be guaranteed by an institution which is a member of one of the following recognized signature guaranty programs: (i) the Securities Transfer Agent Medallion Program (STAMP); (ii) the New York Stock Exchange Medallion Program (MSP); (iii) the Stock Exchange Medallion Program (SEMP); or (iv) such other guaranty program acceptable to the Trustee.

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CONVERSION NOTICE

To convert this Security into Common Stock of the Company, check the box:¨

To convert only part of this Security, state the principal amount to be converted (must be $1,000 or a integral multiple of $1,000): $            .

If you want the stock certificate made out in another person’s name, fill in the form below:

(Insert assignee’s soc. sec. or tax I.D. no.)

(Print or type assignee’s name, address and zip code)

	Your Signature:
Date:
	(Sign exactly as your name appears on the other side of this Security)

*Signature guaranteed by:

By:

* The signature must be guaranteed by an institution which is a member of one of the following recognized signature guaranty programs: (i) the Securities Transfer Agent Medallion Program (STAMP); (ii) the New York Stock Exchange Medallion Program (MSP); (iii) the Stock Exchange Medallion Program (SEMP); or (iv) such other guaranty program acceptable to the Trustee.

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OPTION TO ELECT REPURCHASE

UPON A CHANGE IN CONTROL

To: Magma Design Automation, Inc.

The undersigned registered owner of this Security hereby irrevocably acknowledges receipt of a notice from Magma Design Automation, Inc. (the “Company”) as to the occurrence of a Designated Event with respect to the Company and requests and instructs the Company to redeem the entire principal amount of this Security, 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 Security at the Designated Event Purchase Price, together with accrued interest (including any Additional Interest and/or Extension Fee), if any, to, but excluding, such date, to the registered Holder hereof.

Dated:            

Signature(s)

Signature(s) must be guaranteed by a qualified guarantor institution with membership in an

approved signature guarantee program

pursuant to Rule 17Ad-15 under the Securities Exchange Act of 1934.

Signature Guaranty

Principal amount to be redeemed

(in an integral multiple of $1,000, if less than all):

NOTICE: The signature to the foregoing Election must correspond to the Name as written upon the face of this Security in every particular, without alteration or any change whatsoever.

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SCHEDULE OF EXCHANGES OF SECURITIES⁴

The following exchanges, repurchases or conversions of a part of this global Security have been made:

Principal Amount of this Global Note Following Such Decrease Date of Exchange (or Increase) Authorized Signatory of Securities Custodian Amount of Decrease in Principal Amount of this Global Note Amount of Increase in Principal Amount of this Global Note

⁴ This schedule should be included only if the Security is a global Security.

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CERTIFICATE TO BE DELIVERED UPON EXCHANGE OR REGISTRATION

OF TRANSFER OF RESTRICTED SECURITIES⁵

Re: 2.00% Convertible Senior Notes due May 15, 2010 (the “Securities”) of Magma Design Automation, Inc.

This certificate relates to $            principal amount of Securities owned in (check applicable box)

¨  book-entry or    ¨  definitive form by                    (the “Transferor”).

The Transferor has requested a Registrar or the Trustee to exchange or register the transfer of such Securities.

In connection with such request and in respect of each such Security, the Transferor does hereby certify that the Transferor is familiar with transfer restrictions relating to the Securities as provided in Section 2.12 of the Indenture dated as of March 5, 2007 between Magma Design Automation, Inc. and U.S. Bank National Association, as trustee (the “Indenture”), and the transfer of such Security is being made pursuant to an effective registration statement under the Securities Act of 1933, as amended (the “Securities Act”) (check applicable box) or the transfer or exchange, as the case may be, of such Security does not require registration under the Securities Act because (check applicable box):

¨ Such Security is being transferred pursuant to an effective registration statement under the Securities Act.

¨ Such Security is being acquired for the Transferor’s own account, without transfer.

¨ Such Security is being transferred to the Company or a Subsidiary (as defined in the Indenture) of the Company.

¨ Such Security is being transferred to a person the Transferor reasonably believes is a “qualified institutional buyer” (as defined in Rule 144A or any successor provision thereto (“Rule 144A”) under the Securities Act) that is purchasing for its own account or for the account of a “qualified institutional buyer”, in each case to whom notice has been given that the transfer is being made in reliance on such Rule 144A, and in each case in reliance on Rule 144A.

¨ Such Security is being transferred pursuant to and in compliance with an exemption from the registration requirements under the Securities Act in accordance with Rule 144 (or any successor thereto) (“Rule 144”) under the Securities Act.

⁵ This certificate should only be included if this Security is a Transfer Restricted Security.

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¨ Such Security is being transferred to a non-U.S. Person in an offshore transaction in compliance with Rule 904 of Regulation S under the Securities Act (or any successor thereto).

¨ Such Security is being transferred pursuant to and in compliance with an exemption from the registration requirements of the Securities Act (other than an exemption referred to above) and as a result of which such Security will, upon such transfer, cease to be a “restricted security” within the meaning of Rule 144 under the Securities Act.

The Transferor acknowledges and agrees that, if the transferee will hold any such Securities in the form of beneficial interests in a global Security which is a “restricted security” within the meaning of Rule 144 under the Securities Act, then such transfer can only be made pursuant to (i) Rule 144A under the Securities Act and such transferee must be a “qualified institutional buyer” (as defined in Rule 144A) or (ii) Regulation S under the Securities Act.

Date:
	(Insert Name of Transferor)

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