Exhibit 4.1

Execution Version

TERADYNE, INC.

1.25% Senior Convertible Notes due 2023

INDENTURE

Dated as of December 12, 2016

WILMINGTON TRUST, NATIONAL ASSOCIATION,

as Trustee

TABLE OF CONTENTS

- i -

- ii -

- iii -

INDENTURE dated as of December 12, 2016 between TERADYNE, INC., a Massachusetts corporation, as issuer (the “ Company ”), and WILMINGTON TRUST, NATIONAL ASSOCIATION, a national banking association organized under the laws of the United States, as trustee (the “ Trustee ”).

WHEREAS, the Company has duly authorized the creation of an issue of its 1.25% Senior Convertible Notes due 2023 (the “ Notes ”), having the terms, tenor, amount and other provisions hereinafter set forth, and, to provide therefor, the Company has duly authorized the execution and delivery of this Indenture; and

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

NOW, THEREFORE, THIS INDENTURE WITNESSETH:

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

ARTICLE 1

Definitions

SECTION 1.01. Definitions . The terms defined in this Section 1.01 (except as herein otherwise expressly provided or unless the context otherwise requires) for all purposes of this Indenture and of any indenture supplemental hereto shall have the respective meanings specified in this Section 1.01. The words “ herein ”, “ hereof ”, “ hereunder ” and words of similar import refer to this Indenture as a whole and not to any particular Article, Section or other Subdivision. The word “ or ” is not exclusive and the word “ including ” means including without limitation. The terms defined in this Article include the plural as well as the singular.

“ 1% Exception ” has the meaning specified in Section 10.04(i).

“ Additional Interest ” means all amounts, if any, payable pursuant to Section 4.07(a), Section 4.07(b) and Section 6.12, as applicable.

“ Additional Notes ” has the meaning specified in Section 2.01.

“ Additional Shares ” has the meaning specified in Section 10.03.

“ Affiliate ” of any specified Person means any other Person, directly or indirectly, controlling or controlled by or under direct or indirect common control with such specified Person. For the purposes of this definition, “control” when used with respect to any Person means the power to direct the management and policies of such Person, directly or indirectly,

whether through the ownership of voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have meanings correlative to the foregoing. Notwithstanding anything to the contrary herein, the determination of whether one Person is an “ Affiliate ” of another Person for purposes of this Indenture shall be made based on the facts at the time such determination is made or required to be made, as the case may be, hereunder.

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

“ Averaging Period ” has the meaning specified in Section 10.04(e).

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

“ Bid Solicitation Agent ” means the Person appointed by the Company to solicit bids for the Trading Price of the Notes in accordance with Section 10.01(b)(4). The Trustee shall initially act as the Bid Solicitation Agent. The Company may appoint a replacement Bid Solicitation Agent (including the Company or any of its Affiliates) without prior notice to the Holders (but will provide notice thereof to the Trustee).

“ Board of Directors ” means the Board of Directors of the Company or any committee thereof duly authorized to act on behalf of such Board.

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

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

“ Cash Settlement ” has the meaning set forth in Section 10.02(b).

“ Close of Business ” means 5:00 p.m., New York City time.

“ Closing Sale Price ” per share of the Common Stock or any other security for which a Closing Sale Price must be determined on any Trading Date means:

(1) the closing sale price per share of the Common Stock or such other security (or if no closing sale price is reported, the average of the closing bid and closing ask prices or, if more than one in either case, the average of the average closing bid and the average closing ask prices) on such Trading Day as reported in composite transactions for the Relevant Stock Exchange;

(2) if the Common Stock or such other security is not listed on a Relevant Stock Exchange on such date, the last quoted bid price per share for the Common Stock or such other security in the over-the-counter market on such Trading Day as reported by OTC Markets Group Inc. or a similar organization; or

(3) if the Common Stock or such other security is not so quoted, the average of the mid-point of the closing bid and closing ask price per share for the Common Stock on such Trading Day as determined by a nationally recognized securities dealer retained by the Company for that purpose, which may include any of the Initial Purchasers.

- 2 -

The Closing Sale Price shall be determined without reference to early hours, after hours or extended market trading.

“ Combination Settlement ” has the meaning set forth in Section 10.02(b).

“ Common Stock ” means the Common Stock, par value $0.125 per share, of the Company, or such other capital stock into which the Company’s common stock is reclassified or changed pursuant to Section 10.05.

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

“ Conversion Agent ” means the Person appointed by the Company to which Notes may be presented for conversion. The Conversion Agent appointed by the Company shall initially be the Trustee.

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

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

“ Conversion Obligation ” has the meaning specified in Section 10.01.

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

“ Conversion Rate ” shall initially be 31.4102 shares of Common Stock per $1,000 principal amount of Notes, subject to adjustment as provided in Article 10.

“ Corporate Trust Office ” or other similar term, means the designated office of the Trustee at which at any particular time its corporate trust business as it relates to this Indenture shall be administered, which office is, at the date as of which this Indenture is dated, located at 1100 North Market Street, Wilmington, Delaware 19890, Attention: Teradyne, Inc. Administrator or at any other time at such other address as the Trustee may designate from time to time by notice to the Company.

“ Custodian ” has the meaning specified in Section 6.01.

“ Daily Conversion Value ” means, for each of the 40 consecutive VWAP Trading Days during the applicable Observation Period, 1/40th of the product of:

(1) the Conversion Rate in effect on that VWAP Trading Day, and

(2) the Daily VWAP of the Common Stock on that VWAP Trading Day.

- 3 -

“ Daily Measurement Value ” means Specified Dollar Amount divided by 40.

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

(1) cash equal to the lesser of (A) the Daily Measurement Value and (B) the Daily Conversion Value on such VWAP Trading Day; and

(2) if the Daily Conversion Value on such VWAP Trading Day exceeds the Daily Measurement Value, a number of shares of Common Stock equal to (A) the difference between the Daily Conversion Value and the Daily Measurement Value, divided by (B) the Daily VWAP for such VWAP Trading Day.

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

“ declaration date ” shall mean, with respect to a distribution by the Company to all or substantially all of its holders of Common Stock, the date on which the distribution has been authorized by the Board of Directors under applicable law.

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

“ Defaulted Interest ” has the meaning specified in Section 2.13.

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

“ Designated Institution ” has the meaning specified in Section 10.10.

“ Dividend Threshold Amount ” has the meaning specified in Section 10.04(d).

“ DTC ” means The Depository Trust Company.

“ Effective Date ” has the meaning specified in Section 10.03, except that, as used in Section 10.04, “ Effective Date ” means the first date on which the shares of Common Stock trade on the Relevant Stock Exchange, regular way, reflecting the relevant share split or share combination, as applicable.

- 4 -

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

“ Ex-Dividend Date ” means the first date on which the shares of Common Stock trade on the applicable exchange or in the applicable market, regular way, without the right to receive the issuance, dividend or distribution in question from the Company or, if applicable, from the seller of Common Stock on such exchange or market (in the form of due bills or otherwise) as determined by such exchange or market. For the avoidance of doubt, any alternative trading convention on the applicable exchange or market in respect of the Common Stock under a separate ticker symbol or CUSIP number shall not be considered “regular way” for this purpose.

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

“ Expiration Date ” has the meaning specified in Section 10.04(e).

“ Fundamental Change ” shall be deemed to have occurred when any of the following has occurred:

(1) a “person” or “group,” other than the Company and its Wholly Owned Subsidiaries files a Schedule TO or any schedule, form or report under the Exchange Act disclosing that such person or group has becomes the “beneficial owner” (as these terms are defined in Rule 13d-3 and Rule 13d-5 under the Exchange Act), directly or indirectly, of more than 50% of the Company’s Capital Stock that is at the time entitled to vote by the holder thereof in the election of the Board of Directors (or comparable body);

(2) the consummation of (A) any recapitalization, reclassification or change of the Common Stock (other than changes resulting from a subdivision or combination) as a result of which the Common Stock would be converted into, or exchanged for, stock, other securities or other property or assets; (B) any share exchange, consolidation or merger of the Company pursuant to which the Common Stock shall be converted into cash, securities or other property or assets (or any combination thereof); or (C) any sale, lease or other transfer in one transaction or a series of transactions of all or substantially all of the consolidated assets of the Company and its Subsidiaries, taken as a whole, to any Person other than one of the Company’s Wholly Owned Subsidiaries; provided , however , that neither (a) a transaction described in clause (B) in which the holders of all classes of the Company’s common equity immediately prior to such transaction own, directly or indirectly, more than 50% of all classes of common equity of the continuing or surviving corporation or transferee or the parent thereof immediately after such transaction in substantially the same proportions as such ownership immediately prior to such transaction nor (b) any reorganization or merger of the Company solely for the purpose of changing its jurisdiction of incorporation that results in a reclassification, conversion or exchange of outstanding shares of Common Stock solely into shares of common stock of the surviving entity shall be a fundamental change pursuant to this clause (2);

- 5 -

(3) the adoption of a plan relating to the Company’s liquidation or dissolution; or

(4) the Common Stock or other shares of Capital Stock or Reference Property into which the Notes are convertible is neither listed for trading on The New York Stock Exchange, the NASDAQ Global Market or the NASDAQ Global Select Market (or any of their respective successors);

provided, however, that any transaction or event described above shall not constitute a Fundamental Change if, in connection with such transaction or event, or as a result therefrom, a transaction described in clause (1) or (2) above occurs and at least 90% of the consideration paid for the Common Stock (excluding cash payments for fractional shares and cash payments made pursuant to dissenters’ appraisal rights) consists of shares of common stock traded on any of The New York Stock Exchange, the NASDAQ Global Market or the NASDAQ Global Select Market (or any of their respective successors) (or shall be so traded or quoted immediately following the completion of the merger or consolidation or such other transaction) and, as a result of such transaction, the Notes become convertible into a combination of cash (in respect of an amount up to, and including, the principal portion of such Notes) and Reference Property comprised of such consideration as described under Section 10.05.

“ Fundamental Change Company Notice ” has the meaning specified in Section 3.01(b).

“ Fundamental Change Repurchase Date ” has the meaning specified in Section 3.01(a).

“ Fundamental Change Repurchase Expiration Time ” has the meaning specified in Section 3.01(a)(1).

“ Fundamental Change Repurchase Notice ” has the meaning specified in Section 3.01(a)(1).

“ Fundamental Change Repurchase Price ” has the meaning specified in Section 3.01(a).

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

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

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

“ Initial Purchasers ” means Barclays Capital Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Wells Fargo Securities, LLC.

“ interest ” means, when used with reference to the Notes, any interest payable under the terms of the Notes, including Defaulted Interest, if any, and Additional Interest, if any.

- 6 -

“ Interest Payment Date ” has the meaning specified in Section 2.03(c).

“ Last Original Issue Date ” means (a) with respect to any Notes issued pursuant to the Purchase Agreement, and any Notes issued in exchange therefor or in substitution thereof, the date of this Indenture and (b) with respect to any Notes issued pursuant to Section 2.01, and any Notes issued in exchange therefor or in substitution thereof, the date such Notes are originally issued (or, if the initial purchaser(s) thereof exercise any option granted to them to purchase additional Notes as part of the same offering, the last date additional Notes are issued pursuant to a full or partial exercise of such option).

“ Make-Whole Fundamental Change ” has the meaning specified in Section 10.03.

“ Market Disruption Event ” means (1) a failure by the Relevant Stock Exchange to open for trading during its regular trading session; or (2) the occurrence or existence prior to 1:00 p.m., New York City time, on any Scheduled Trading Day for the Common Stock for more than one half-hour period in the aggregate during regular trading hours of any suspension or limitation imposed on trading (by reason of movements in price exceeding limits permitted by the Relevant Stock Exchange or otherwise) in the Common Stock or in any options contracts or futures contracts relating to the Common Stock.

“ Maturity Date ” means December 15, 2023.

“ Measurement Period ” has the meaning specified in Section 10.01(b)(4).

“ Merger Event ” has the meaning specified in Section 10.05.

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

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

“ Observation Period ” means, with respect to any Note surrendered for conversion:

(1) if the relevant Conversion Date occurs prior to September 15, 2023, the 40 consecutive VWAP Trading Day period beginning on, and including, the second VWAP Trading Day immediately succeeding such Conversion Date; or

(2) if the relevant Conversion Date occurs on or after September 15, 2023, the 40 consecutive VWAP Trading Day period beginning on, and including, the 42 ^nd Scheduled Trading Day immediately preceding the Maturity Date.

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

- 7 -

“ Officer’s Certificate ” when used with respect to the Company, means a certificate that is delivered to the Trustee and that is signed by an Officer of the Company. The Officer executing an Officer’s Certificate pursuant to Section 4.04 shall be the principal executive, financial or accounting officer of the Company.

“ Open of Business ” means 9:00 a.m., New York City time.

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

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

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

“ Physical Settlement ” has the meaning set forth in Section 10.02(b).

“ Preferred Stock ”, as applied to the Capital Stock of any Person, means Capital Stock of any class or classes (however designated) that is preferred as to the payment of dividends, or as to the distribution of assets upon any voluntary or involuntary liquidation or dissolution of such Person, over shares of Capital Stock of any other class of such Person.

“ Preliminary Offering Memorandum ” means the preliminary offering memorandum, dated December 5, 2016, relating to the offering and sale by the Company of the Notes. 

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

“ Purchase Agreement ” means the purchase agreement dated December 6, 2016 between the Company and the Initial Purchasers relating to the offer and sale of the Notes.

“ Record Date ” means, in respect of a dividend or distribution to holders of Common Stock, the date fixed for determination of holders of Common Stock entitled to receive such dividend or distribution.

“ Reference Property ” has the meaning specified in Section 10.05.

“ Register ” has the meaning specified in Section 2.05.

“ Registrar ” has the meaning specified in Section 2.05.

“ Regular Record Date ” means, with respect to any Interest Payment Date on the Notes, the June 1 and December 1 (whether or not a Business Day) preceding the applicable June 15 and December 15 Interest Payment Date, respectively.

- 8 -

“ Relevant Stock Exchange ” means The New York Stock Exchange or, if the Common Stock is not then listed on The New York Stock Exchange, the principal other U.S. national or regional securities exchange on which the Common Stock is then listed.

“ Resale Restriction Termination Date ” has the meaning specified in Section 2.08(c).

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

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

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

“ Schedule TO ” means a Tender Offer Statement under Section 14(d)(1) or 13(e)(1) of the Exchange Act.

“ Scheduled Trading Day ” means a day that is scheduled to be a Trading Day on the Relevant Stock Exchange. If the Common Stock is not so listed or admitted for trading, “Scheduled Trading Day” means a Business Day.

“ SEC ” means the Securities and Exchange Commission.

“ Securities Act ” means the Securities Act of 1933, as amended.

“Settlement Amount” has the meaning set forth in Section 10.02(b)(iii).

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

“ Shelf Registration Statement ” means a registration statement of the Company filed with the Commission on either (i) Form S-3 (or any successor form or other appropriate form under the Securities Act) or (ii) if the Company is not permitted to file a registration statement on Form S-3, a registration statement on Form S-1 (or any successor form or other appropriate form under the Securities Act), in each case for an offering to be made on a continuous or delayed basis pursuant to Rule 415 under the Securities Act covering Notes and the Common Stock issuable upon conversion thereof.

“ Significant Subsidiary ” with respect to any Person means any Subsidiary of such Person that constitutes a “significant subsidiary” within the meaning of Rule 1-02(w) under Regulation S-X under the Exchange Act.

- 9 -

“ Special Interest Payment Date ” has the meaning specified in Section 2.13(a).

“ Special Record Date ” has the meaning specified in Section 2.13(a).

“ Specified Dollar Amount ” means the maximum cash amount per $1,000 principal amount of Notes to be received upon conversion as specified (or deemed specified) by the Company in the notice specifying the Company’s chosen Settlement Method.

“ Spin-off ” has the meaning specified in Section 10.04(c).

“ Stock Price ” means, with respect to any Make-Whole Fundamental Change:

(1) if holders of the Common Stock receive only cash in such Make-Whole Fundamental Change, the cash amount paid (or deemed paid) per share; or

(2) otherwise, the average of the Closing Sale Prices of the Common Stock over the five Trading Day period ending on, and including, the Trading Day immediately preceding the Effective Date of such Make-Whole Fundamental Change.

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

“ Successor Company ” has the meaning specified in Section 5.01(a).

“ Trading Day ” means a day on which:

(1) trading in the Common Stock generally occurs on the Relevant Stock Exchange or, if the Common Stock is not then listed on a Relevant Stock Exchange, on the principal other market on which the Common Stock is then traded; and

(2) a Closing Sale Price for the Common Stock is available on such securities exchange or market.

If the Common Stock is not so listed or traded, “Trading Day” means a Business Day.

“ Trading Price ” of the Notes on any date of determination means the average of the secondary market bid quotations per $1,000 principal amount of Notes obtained by the Bid Solicitation Agent for $5,000,000 principal amount of the Notes at approximately 3:30 p.m., New York City time, on such determination date from three independent nationally recognized securities dealers selected by the Company for this purpose, which may include one or more of the Initial Purchasers; 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. If the Bid Solicitation Agent cannot reasonably obtain at least one bid for $5,000,000 principal amount of the Notes from a nationally recognized securities dealer or, in its

- 10 -

reasonable judgment, the bid quotations are not indicative of the secondary market value of the Notes, then, for purposes of the Trading Price conversion contingency described in Section 10.01(b)(4) only, the Trading Price of the Notes shall be deemed to be less than 98% of the product of the Closing Sale Price of the Common Stock and the Conversion Rate on such Trading Day. If (x) the Company is not acting as the Bid Solicitation Agent, and the Company does not instruct the Bid Solicitation Agent to obtain bids when required (as described in Section 10.01(b)(4)), or if the Company so instructs the Bid Solicitation Agent but the Bid Solicitation Agent fails to carry out such instruction or (y) the Company is acting as Bid Solicitation Agent and the Company fails to make such determination, then, in either case, the Trading Price per $1,000 principal amount of the Notes shall be deemed to be less than 98% of the product of the Closing Sale Price of the Common Stock and the Conversion Rate on each day the Company fails to do so.

“ Trigger Event ” has the meaning specified in Section 10.04(c).

“ Trust Indenture Act ” means the Trust Indenture Act of 1939, as amended.

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

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

“ Valuation Period ” has the meaning specified in Section 10.04(c).

“ VWAP Trading Day ” means a day on which:

(1) there is no Market Disruption Event; and

(2) trading in the Common Stock generally occurs on the Relevant Stock Exchange.

If the Common Stock is not so listed or admitted for trading on any Relevant Stock Exchange, “VWAP Trading Day” means a “Business Day.”

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

ARTICLE 2

The Notes

SECTION 2.01. Designation, Amount and Issuance of Notes . The Notes shall be designated as “1.25% Senior Convertible Notes due 2023.” The Notes shall not exceed the aggregate principal amount of $460,000,000 (except pursuant to this Section, Section 2.09 and Section 2.11). Upon the execution of this Indenture, or from time to time thereafter, Notes may be executed by the Company and delivered to the Trustee for authentication.

- 11 -

The Company may, without the consent of, or notice to, Holders, issue additional Notes hereunder in the future on the same terms and conditions of the Notes issued hereunder (other than differences in the issue price and interest accrued prior to the issue date of such additional Notes) in an unlimited aggregate principal amount (such additional Notes, the “ Additional Notes ”); provided that if any such Additional Notes are not fungible with the Notes initially issued hereunder for U.S. federal income tax and securities law purposes, such Additional Notes will have one or more separate CUSIP numbers. The Notes initially issued hereunder and any such Additional Notes shall rank equally and ratably and shall be treated as a single series for all purposes under this Indenture. The Company may not issue any Additional Notes if any Event of Default has occurred with respect to the Notes.

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

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

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

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

Any Global Notes shall represent such of the outstanding Notes as shall be specified therein and shall provide that it shall represent the aggregate amount of outstanding

- 12 -

Notes from time to time endorsed thereon and that the aggregate amount of outstanding Notes represented thereby may from time to time be increased or reduced on the books and records of the Depositary and Trustee to reflect repurchases, conversions, transfers or exchanges permitted hereby. Any endorsement of a Global Note to reflect the amount of any increase or decrease in the amount of outstanding Notes represented thereby shall be made by the Trustee or the custodian for the Global Notes, at the direction of the Trustee, in such manner and upon instructions given by the holder of such Notes in accordance with this Indenture. Payment of principal (including the Fundamental Change Repurchase Price, if applicable) of, and accrued and unpaid interest on, the Global Note shall be made to the Holder of such Note on the date of payment, unless a record date or other means of determining Holders eligible to receive payment is provided for herein.

SECTION 2.03. Date and Denomination of Notes; Payment at Maturity; Payment of Interest .

(a) Date and Denomination . The Notes shall be issuable in registered form without coupons in minimum denominations of $1,000 principal amount and integral multiples of $1,000 in excess thereof. Each Note shall be dated the date of its authentication and shall bear interest from the date specified on the face of the Notes.

(b) Payment at Maturity . Each Holder shall be entitled to receive on the Maturity Date, per $1,000 principal amount of Notes, $1,000 in cash, together with accrued and unpaid interest thereon to, but excluding, the Maturity Date, unless such Note is earlier converted or repurchased. With respect to Global Notes, the Company shall pay or cause the Paying Agent to pay principal and any interest to the Depositary in immediately available funds. With respect to any certificated Notes, principal and any interest shall be payable at the Company’s office or agency, which initially shall be the office or agency of the Trustee located at Wilmington Trust, National Association, 1100 North Market Street, Wilmington, Delaware 19890, Attention: Teradyne, Inc. Administrator.

(c) Payment of Interest . Interest on the Notes shall accrue at the rate of 1.25% per annum from December 12, 2016 or from the most recent date to which interest has been paid or duly provided for. Interest shall be payable in arrears on June 15 and December 15 of each year (each, an “ Interest Payment Date ”), commencing June 15, 2017, to the Person in whose name any Note is registered as it appears on the Register at the Close of Business on the applicable Regular Record Date; provided , however , as provided in Section 10.02(d), if a Holder converts any Notes after the Close of Business on the Regular Record Date but prior to the corresponding Interest Payment Date, interest shall be payable, on the earlier of the corresponding Interest Payment Date and the date the Company delivers the Settlement Amount in respect of such conversion, to the Person in whose name any Note is registered as it appears on the Register at the Close of Business on the applicable Regular Record Date.

Interest on the Notes shall be calculated on the basis of a 360-day year consisting of twelve 30-day months.

- 13 -

The Company shall pay or cause the Paying Agent to pay interest on:

(1) any Global Notes to the Depositary in immediately available funds;

(2) any Notes in certificated form having a principal amount of less than $2,000,000 by check mailed to the address of the Person in whose name such Notes are registered as it appears in the Register; and

(3) any Notes in certificated form having a principal amount of $2,000,000 or more, either by check mailed to the address of the Person in whose name such Notes are registered as it appears in the Register or, upon application by such Holder to the Registrar not later than the relevant Regular Record Date, or by wire transfer in immediately available funds to that Holder’s account within the United States, which application shall remain in effect until the Holder notifies, in writing, the Registrar to the contrary.

SECTION 2.04. Execution and Authentication . One Officer shall sign the Notes for the Company by manual or facsimile signature. If an Officer whose signature is on a Note no longer holds that office at the time the Trustee authenticates the Note, the Note shall be valid nevertheless.

A Note shall not be valid until an authorized signatory of the Trustee manually authenticates the Note. Upon the written order of the Company signed by an Officer, the Trustee shall authenticate a Note executed by the Company. The signature of the Trustee on the Note shall be conclusive evidence that the Note has been duly and validly authenticated under this Indenture.

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

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

The Company shall notify the Trustee of the name and address of any such agent. If the Company fails to maintain a Registrar or Paying Agent, the Trustee shall act as such and shall be entitled to appropriate compensation therefor pursuant to Section 7.07. The Company or any of its Wholly Owned Subsidiaries may act as Paying Agent or Registrar.

- 14 -

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

SECTION 2.06. Paying Agent to Hold Money in Trust . Prior to 10:00 a.m., New York City time, on the Maturity Date, each Interest Payment Date, any Fundamental Change Repurchase Date and any settlement date of a Conversion Obligation, the Company shall deposit with the Paying Agent (or if the Company or a Wholly Owned Subsidiary of the Company is acting as Paying Agent, segregate and hold in trust for the benefit of the Persons entitled thereto) a sum sufficient to pay such amounts owed on such dates. The Company shall require each Paying Agent (other than the Trustee) to agree in writing that the Paying Agent shall hold in trust for the benefit of Holders or the Trustee all money held by the Paying Agent for the payment of amounts owed on such dates and shall notify the Trustee of any Default by the Company in making any such payment. If the Company or a Wholly Owned Subsidiary of the Company acts as Paying Agent, it shall segregate the money held by it as Paying Agent and hold it as a separate trust fund. The Company at any time may require a Paying Agent to pay all money held by it to the Trustee and to account for any funds disbursed by the Paying Agent. Upon complying with this Section, the Paying Agent shall have no further liability for the money delivered to the Trustee.

SECTION 2.07. Holder 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.

SECTION 2.08. Exchange and Registration of Transfer of Notes; Restrictions on Transfer .

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

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

- 15 -

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

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

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

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

Neither the Company nor the Trustee nor any Registrar shall be required to exchange, issue or register a transfer of (a) any Note or portions thereof surrendered for conversion pursuant to Article 10 or (b) any Note or portions thereof tendered for repurchase (and not withdrawn) pursuant to Article 3.

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

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

(ii) Notwithstanding any other provision in this Indenture, no Global Note may be exchanged in whole or in part for Notes registered, and no transfer of a Global Note in whole or in part may be registered, in the name of any Person other than the Depositary or a nominee thereof unless:

(A) the Depositary has notified the Company that it is unwilling or unable to continue as Depositary for such Global Note and a successor Depositary has not been appointed within 60 days;

- 16 -

(B) the Depositary has ceased to be registered as a clearing agency under the Exchange Act and a successor Depositary has not been appointed within 60 days; or

(C) an Event of Default with respect to the Notes has occurred and is continuing and such beneficial owner requests that its Notes be issued in physical, certificated form.

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

(iv) Notes issued in exchange for a Global Note or for any portion of a Global Note pursuant to clause (ii) or (iii) above shall be issued in definitive, fully registered form, without interest coupons, shall have an aggregate principal amount equal to that of such Global Notes or portion thereof to be so exchanged, shall be registered in such names and be in such authorized denominations as the Depositary shall designate and shall bear any legends required hereunder. Any Global Notes to be exchanged shall be surrendered by the Depositary to the Trustee, as Registrar; provided that pending completion of the exchange of a Global Note, the Trustee acting as custodian of the Global Notes for the Depositary or its nominee with respect to such Global Notes, shall reduce the principal amount thereof, by an amount equal to the portion thereof to be so exchanged, by means of an appropriate adjustment made on the books and records of the Trustee. Upon any such surrender or adjustment, the Trustee shall authenticate and make available for delivery the Notes issuable on such exchange to or upon the written order of the Depositary or an authorized representative thereof.

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

(vi) Neither any members of, or participants in, the Depositary (the “ Agent Members ”) nor any other Persons on whose behalf Agent Members may act shall have any rights under this Indenture with respect to any Global Notes registered in the name of the Depositary or any nominee thereof, and the Depositary or such nominee, as the case may be, may be treated by the Company, the Trustee and any agent of the Company or the Trustee as the absolute owner and holder of such Global Notes 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

- 17 -

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 Notes.

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

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

Until the date (the “ Resale Restriction Termination Date ”) that is the later of (1) the date that is one year after the Last Original Issue Date of the Notes, or such shorter period of time as permitted by Rule 144 under the Securities Act or any successor provision thereunder, and (2) such later date, if any, as may be required by applicable law, any certificate evidencing a Restricted Security (and all securities issued in exchange therefor or substitution thereof, other than Common Stock, if any, issued upon conversion thereof, which shall bear the legend set forth in Section 2.08(d), if applicable) shall bear a legend in substantially the following form, unless such Restricted Security has been sold pursuant to a registration statement that has been declared effective under the Securities Act (and which continues to be effective at the time of such transfer) or sold pursuant to Rule 144 under the Securities Act or any similar provision then in force, or unless otherwise agreed by the Company in writing as set forth above, with written notice thereof to the Trustee:

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

- 18 -

PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH CLAUSE (2)(D) ABOVE, THE COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT.

In connection with any transfer of the Notes prior to the Resale Restriction Termination Date, the Holder must complete and deliver the form of assignment set forth on the certificate representing the Note, with the appropriate box checked, to the Trustee (or any successor Trustee, as applicable).

- 19 -

Any Note (or security issued in exchange or substitution therefore) (i) as to which such restrictions on transfer shall have expired in accordance with their terms, (ii) that has been transferred pursuant to a registration statement that has become effective or been declared effective under the Securities Act and that continues to be effective at the time of such transfer or (iii) that has been sold pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities Act, may, upon surrender of such Notes for exchange to the Registrar in accordance with the provisions of this Section 2.08, be exchanged for a new Note or Notes, of like tenor and aggregate principal amount, which shall not bear the restrictive legend required by Section 2.08(c) and shall be assigned (or deemed assigned) a restricted CUSIP number. The restrictive legend set forth above and affixed on any Note will be deemed, in accordance with the terms of the certificate representing such Note, to be removed therefrom upon the Company’s delivery to the Trustee of written notice to such effect, without further action by the Company, the Trustee, the Holder(s) thereof or any other Person; at such time, such Note will be deemed to be assigned an unrestricted CUSIP number as provided in the certificate representing such Note, it being understood that the Depositary of any Global Note may require a mandatory exchange or other process to cause such Global Note to be identified by an unrestricted CUSIP number in the facilities of such Depositary. Without limiting the generality of any other provision of this Indenture, the Trustee will be entitled to receive an instruction letter from the Company before taking any action with respect to effecting any such mandatory exchange or other process. The Company and the Trustee reserve the right to require the delivery of such legal opinions, certifications or other evidence as may reasonably be required in order to determine that any proposed transfer of any Note is being made in compliance with the Securities Act and applicable state securities laws.

The Company shall be entitled to instruct the custodian for the Global Notes in writing to so surrender any Global Note as to which any of the conditions set forth in clause (i) through (iii) of the immediately preceding paragraph have been satisfied, and, upon such instruction, the custodian shall so surrender such Global Note for exchange; and any new Global Note so exchanged therefor shall not bear the restrictive legend specified in this Section 2.08(c) and shall not be assigned (or deemed assigned) a restricted CUSIP number. The Company shall notify the Trustee in writing as soon as reasonably practicable after a registration statement, if any, with respect to the Notes or any Common Stock issued upon conversion of the Notes has been declared effective under the Securities Act.

Notwithstanding any other provisions of this Indenture (other than the provisions set forth in this Section 2.08(c)), a Global Note may not be transferred as a whole or in part except (i) by the Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary and (ii) for exchange of a Global Note or a portion thereof for one or more Physical Notes in accordance with the Section 2.08(b).

(d) Until the applicable Resale Restriction Termination Date, any stock certificate representing Common Stock issued upon conversion of a Note shall bear a legend in substantially the following form (unless such Common Stock has been transferred pursuant to a registration statement that has become or been declared effective under the Securities Act and that continues to be effective at the time of such transfer, or pursuant to the exemption from

- 20 -

registration provided by Rule 144 or any similar provision then in force under the Securities Act, or such Common Stock has been issued upon conversion of a Note that has been transferred pursuant to a registration statement that has become or been declared effective under the Securities Act and that continues to be effective at the time of such transfer, or pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities Act, or unless otherwise agreed by the Company with written notice thereof to the Trustee and any transfer agent for the Common Stock):

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

PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH CLAUSE (2)(D) ABOVE, THE COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN COMPLIANCE WITH THE

- 21 -

SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT.

Any such Common Stock (i) as to which such restrictions on transfer shall have expired in accordance with their terms, (ii) that has been transferred pursuant to a registration statement that has become or been declared effective under the Securities Act and that continues to be effective at the time of such transfer or (iii) that has been sold pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities Act, may, upon surrender of the certificates representing such shares of Common Stock for exchange in accordance with the procedures of the transfer agent for the Common Stock, be exchanged for a new certificate or certificates for a like aggregate number of shares of Common Stock, which shall not bear the restrictive legend required by this Section 2.08(d). The Company and the transfer agent for the Common Stock reserve the right to require the delivery of such legal opinions, certifications or other evidence as may reasonably be required in order to determine that any proposed transfer is of such Common Stock is being made in compliance with the Securities Act and applicable state securities laws.

(e) Any Note or shares of Common Stock issued upon the conversion or exchange of a Note that is repurchased or owned by any Affiliate of the Company (or any Person who was an Affiliate of the Company at any time during the immediately preceding three months) may not be resold by such Affiliate (or such Person, as the case may be) unless registered under the Securities Act or resold pursuant to an exemption from the registration requirements of the Securities Act in a transaction that results in such Note or Common Stock, as the case may be, no longer being a “restricted security” (as defined under Rule 144). The Company shall cause any Note that is repurchased or owned by it to be surrendered to the Trustee for cancellation in accordance with Section 2.12.

(f) None of the Trustee, the Registrar or the Conversion Agent shall have any duty to monitor the Company’s compliance with or have any responsibility with respect to the Company’s compliance with any federal or state securities laws in connection with registrations of transfers and exchanges or conversions of the Notes or Common Stock. The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance with any restrictions on transfer imposed under this Indenture or under applicable law with respect to any transfer of any interest in any Note (including any transfers between or among Depositary participants or beneficial owners of interests in any Global Note) other than to require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required by the terms of, this Indenture, and to examine the same to determine substantial compliance as to form with the express requirements hereof.

(g) Neither the Trustee nor any agent shall have any responsibility or liability for any actions taken or not taken by the Depositary.

- 22 -

SECTION 2.09. Replacement Notes . If a mutilated Note is surrendered to the Registrar or if the Holder claims that the Note has been lost, destroyed or wrongfully taken, the Company shall issue and the Trustee shall authenticate a replacement Note if the Holder takes the following actions and satisfies the requirements of Section 8-405 of the Uniform Commercial Code:

(i) notifies the Company or the Trustee within a reasonable time after he has notice of such loss, destruction or wrongful taking and prior to the Registrar registering a transfer of such Note;

(ii) makes a request to the Company or the Trustee for a replacement Note prior to the Note being acquired by a protected purchaser as defined in Section 8-303 of the Uniform Commercial Code (a “ protected purchaser ”); and

(iii) satisfies any other reasonable requirements of the Trustee.

If required by the Trustee or the Company, such Holder shall furnish an indemnity bond sufficient in the judgment of the Trustee to protect the Trustee, the Paying Agent and the Registrar and in the judgment of the Company to protect the Company, the Trustee, the Paying Agent and the Registrar from any loss, expense, claim or liability that any of them may suffer if a Note is replaced and subsequently presented or claimed for payment. The Company and the Trustee may charge the Holder for their expenses in replacing a Note. In case any Note which has matured or is about to mature or has been validly tendered for repurchase on a Fundamental Change Repurchase Date (and not validly withdrawn), or is to be converted, shall become mutilated or be destroyed, lost or stolen, the Company may, instead of issuing a substitute Note, pay or authorize the payment of or convert or authorize the conversion of the same (without surrender thereof except in the case of a mutilated Note), as the case may be, if the applicant for such payment or conversion shall furnish to the Company, to the Trustee and, if applicable, to such authenticating agent such security or indemnity as may be required by them to save each of them harmless for any loss, liability, cost or expense caused by or in connection with such substitution, and, in every case of destruction, loss or theft, the applicant shall also furnish to the Company, the Trustee and, if applicable, any Paying Agent or Conversion Agent evidence to their satisfaction of the destruction, loss or theft of such Notes and of the ownership thereof.

Every replacement Note is an additional obligation of the Company.

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

SECTION 2.10. Outstanding Notes . Notes outstanding at any time are all Notes authenticated by the Trustee except for those canceled by it, those delivered to it for cancellation and those described in this Section as not outstanding. A Note does not cease to be outstanding because the Company or an Affiliate of the Company holds the Note.

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

If the Paying Agent segregates and holds in trust, in accordance with this Indenture, on a Fundamental Change Repurchase Date or Maturity Date money sufficient to pay

- 23 -

all principal and interest payable on that date with respect to the Notes (or portions thereof) to be repurchased or maturing, as the case may be, and the Paying Agent is not prohibited from paying such money to the Holders on that date pursuant to the terms of this Indenture, then on and after that date such Notes (or portions thereof) cease to be outstanding and interest on them ceases to accrue.

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

SECTION 2.12. Cancellation . The Company at any time may deliver Notes to the Trustee for cancellation. The Registrar, the Paying Agent and the Conversion Agent shall forward to the Trustee any Notes surrendered to them for registration of transfer, exchange, payment or conversion. The Trustee and no one else shall cancel all Notes surrendered for registration of transfer, exchange, payment, conversion or cancellation in accordance with its customary procedures. The Company may not issue new Notes to replace Notes it has paid or delivered to the Trustee for cancellation or that any Holder has converted pursuant to Article 10.

The Company may, to the extent permitted by law, repurchase any Notes in the open market or by tender offer at any price or by private agreement. The Company may, at its option, surrender any Notes repurchased by it to the Trustee for cancellation, but may not reissue or resell such Notes. Any Notes surrendered to the Trustee for cancellation may not be reissued or resold and shall be promptly cancelled (other than Notes purchased pursuant to cash-settled swaps or other derivatives).

- 24 -

SECTION 2.13. Defaulted Interest . Any interest on any Note which is payable, but is not paid when the same becomes due and payable and such nonpayment continues for a period of 30 calendar days, shall forthwith cease to be payable to the Holder on the Regular Record Date, and such defaulted interest and interest (to the extent lawful) on such defaulted interest at the annual rate borne by the Notes (such defaulted interest and interest thereon herein collectively called “ Defaulted Interest ”) shall be paid by the Company at its election, in each case, as provided in clause (a) or (b) below:

(a) The Company may elect to make payment of any Defaulted Interest to the Persons in whose names the Notes (or their respective predecessor Notes) are registered at the Close of Business on a Special Record Date (as defined below) for the payment of such Defaulted Interest, which shall be fixed in the following manner. The Company shall notify the Trustee in writing of the amount of Defaulted Interest proposed to be paid on each Note and the date (not less than 30 calendar days after such notice) of the proposed payment (the “ Special Interest Payment Date ”), and at the same time the Company shall deposit with the Trustee an amount of money equal to the aggregate amount proposed to be paid in respect of such Defaulted Interest or shall make arrangements satisfactory to the Trustee for such deposit prior to the date of the proposed payment, such money when deposited to be held in trust for the benefit of the Persons entitled to such Defaulted Interest as in this clause provided. Thereupon the Company shall fix a record date (the “ Special Record Date ”) for the payment of such Defaulted Interest which shall be not more than fifteen calendar days and not less than ten calendar days prior to the Special Interest Payment Date and not less than ten calendar days after the receipt by the Trustee of the notice of the proposed payment. The Company shall promptly notify the Trustee of such Special Record Date and shall promptly cause notice of the proposed payment of such Defaulted Interest and the Special Record Date and Special Interest Payment Date therefor to be given to each Holder, not less than ten calendar days prior to such Special Record Date. Notice of the proposed payment of such Defaulted Interest and the Special Record Date and Special Interest Payment Date therefor having been so given, such Defaulted Interest shall be paid on the Special Interest Payment Date to the Persons in whose names the Notes (or their respective predecessor Notes) are registered at the Close of Business on such Special Record Date and shall no longer be payable pursuant to the following clause (b).

(b) The Company may make payment of any Defaulted Interest in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Notes may be listed, and upon such notice as may be required by such exchange, if, after notice given by the Company to the Trustee of the proposed payment pursuant to this clause, such manner of payment shall be deemed practicable by the Trustee.

(c) Subject to the foregoing provisions of this Section 2.13, each Note delivered under this Indenture upon registration of, transfer of or in exchange for or in lieu of any other Note shall carry the rights to interest accrued and unpaid, and to accrue, which were carried by such other Note.

SECTION 2.14. CUSIP and ISIN Numbers . The Company in issuing the Notes may use “CUSIP” and “ISIN” numbers (if then generally in use) and, if so, the Trustee shall use “CUSIP” and “ISIN” numbers in notices of repurchase as a convenience to Holders; provided , however , that any such notice may state that no representation is made as to the correctness of such numbers either as printed on the Notes or as contained in any notice of a repurchase and that reliance may be placed only on the other identification numbers printed on the Notes, and any such repurchase shall not be affected by any defect in or omission of such numbers. The Company shall promptly notify the Trustee in writing of any changes to the CUSIP and ISIN numbers. The Notes will initially be issued with a restricted CUSIP.

SECTION 2.15. Ranking . The Notes constitute a senior general unsecured obligation of the Company, ranking equally in right of payment with all existing and future

- 25 -

senior unsecured indebtedness of the Company and ranking senior in right of payment to any future indebtedness of the Company that is expressly made subordinate to the Notes by the terms of such indebtedness.

ARTICLE 3

Repurchase of Notes

SECTION 3.01. Repurchase at Option of Holders Upon a Fundamental Change . (a) If a Fundamental Change occurs at any time prior to the Maturity Date, each Holder shall have the right to require the Company to repurchase all or part of such Holder’s Notes in a principal amount thereof that is equal to $1,000 in principal amount or whole multiples of $1,000 in excess thereof, on the date (the “ Fundamental Change Repurchase Date ”) specified by the Company in the Fundamental Change Company Notice that is not less than 20 nor more than 35 Business Days after the date of the Fundamental Change Company Notice at a repurchase price, payable in cash, equal to 100% of the principal amount of the Notes being repurchased, plus accrued and unpaid interest to, but excluding, the Fundamental Change Repurchase Date (the “ Fundamental Change Repurchase Price ”). However, if such Fundamental Change Repurchase Date is after a Regular Record Date and on or prior to the corresponding Interest Payment Date, the full amount of interest due shall be paid on the Interest Payment Date to the Holder of record on the Regular Record Date and the Fundamental Change Repurchase Price shall be equal to 100% of the principal amount of Notes to be repurchased. The Fundamental Change Repurchase Date shall be subject to postponement in order to allow the Company to comply with applicable law as a result of changes to such applicable law occurring after the date of this Indenture. Repurchases of Notes under this Section 3.01 shall be made upon:

(1) delivery to the Paying Agent by a Holder of a duly completed notice (the “ Fundamental Change Repurchase Notice ”) in the form set forth on the reverse of the Note prior to the Close of Business on the Business Day immediately preceding the Fundamental Change Repurchase Date (the “ Fundamental Change Repurchase Expiration Time ”); and

(2) delivery or book-entry transfer of the Notes to the Paying Agent at any time after delivery of the Fundamental Change Repurchase Notice (together with all necessary endorsements) at the Corporate Trust Office of the Paying Agent, such delivery being a condition to receipt by the Holder of the Fundamental Change Repurchase Price therefor; provided that such Fundamental Change Repurchase Price shall be so paid pursuant to this Section 3.01 only if the Notes so delivered to the Paying Agent shall conform in all respects to the description thereof in the related Fundamental Change Repurchase Notice.

The Fundamental Change Repurchase Notice shall state:

(i) with respect to Global Notes, the appropriate Depositary information and, with respect to certificated Notes, the certificate numbers, if any, of the Notes to be tendered for repurchase;

- 26 -

(ii) the portion of the principal amount of the Notes to be repurchased, which must be $1,000 or whole multiples of $1,000 in excess thereof; and

(iii) that the Notes are to be repurchased by the Company pursuant to the applicable provisions of the Notes and this Indenture.

Payment of the Fundamental Change Repurchase Price for Notes for which a Fundamental Change Repurchase Notice has been delivered and not withdrawn is conditioned upon book-entry transfer or delivery of the Notes, together with necessary endorsements, to the Paying Agent, as the case may be. Payment of the Fundamental Change Repurchase Price for the Notes shall be made promptly following the later of the Fundamental Change Repurchase Date and the time of book-entry transfer or delivery of the Notes, as the case may be.

All questions as to the validity, eligibility (including time of receipt) and acceptance of any Notes for repurchase shall be determined by the Company, whose determination shall be final and binding absent manifest error.

Notwithstanding anything herein to the contrary, any Holder delivering to the Paying Agent the Fundamental Change Repurchase Notice contemplated by this Section 3.01 shall have the right to withdraw such Fundamental Change Repurchase Notice at any time prior to the Fundamental Change Repurchase Expiration Time by delivering a written notice of withdrawal to the Paying Agent in accordance with Section 3.02 below.

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

(b) On or before the tenth Business Day after the occurrence of a Fundamental Change, the Company shall provide to all Holders on the date of the Fundamental Change at their addresses shown in the Register of the Registrar and to beneficial owners to the extent required by applicable law, the Trustee and the Paying Agent a written notice (the “ Fundamental Change Company Notice ”) of the occurrence of the Fundamental Change and the resulting repurchase right.

Each Fundamental Change Company Notice shall specify, among other things:

(i) the events causing the Fundamental Change;

(ii) the date of the Fundamental Change;

(iii) the Fundamental Change Repurchase Date;

(iv) the last date on which a repurchase upon a Fundamental Change may be exercised, which shall be the Business Day immediately preceding the Fundamental Change Repurchase Date;

(v) the Fundamental Change Repurchase Price;

- 27 -

(vi) the names and addresses of the Paying Agent and the Conversion Agent;

(vii) the procedures that a Holder must follow to exercise the right to repurchase upon a Fundamental Change;

(viii) that the Fundamental Change Repurchase Price for any Notes as to which a Fundamental Change Repurchase Notice has been given and not withdrawn shall be paid on the later of such Fundamental Change Repurchase Date and the time of book-entry transfer or delivery of the Notes (together with all necessary endorsements);

(ix) that, except as otherwise provided herein with respect to a Fundamental Change Repurchase Date that is after a Regular Record Date for the payment of an installment of interest and on or before the related Interest Payment Date, on and after such Fundamental Change Repurchase Date (unless there shall be a Default in the payment of the Fundamental Change Repurchase Price), interest on Notes subject to repurchase upon Fundamental Change shall cease to accrue, and all rights of the Holders of such Notes shall terminate, other than the right to receive, in accordance herewith, the Fundamental Change Repurchase Price;

(x) that a Holder shall be entitled to withdraw its election in the Fundamental Change Repurchase Notice prior to the Close of Business on the Business Day immediately preceding the Fundamental Change Repurchase Date, by means of a letter or facsimile transmission (receipt of which is confirmed and promptly followed by a letter) setting forth the name of such Holder, a statement that such Holder is withdrawing its election to have Notes purchased by the Company on such Fundamental Change Repurchase Date pursuant to a repurchase upon a Fundamental Change, the certificate number(s) of such Notes to be so withdrawn, if such Notes are certificated Notes, the principal amount of the Notes of such Holder to be so withdrawn, which amount must be $1,000 or an integral multiple thereof and the principal amount, if any, of the Notes of such Holder that remain subject to the Fundamental Change Repurchase Notice delivered by such Holder in accordance with this Section 3.01, which amount must be $1,000 or an integral multiple thereof; provided , however , that if there shall be a Default in the payment of the Fundamental Change Repurchase Price, a Holder shall be entitled to withdraw its election in the Fundamental Change Repurchase Notice at any time during which such Default is continuing;

(xi) the Conversion Rate and any adjustments to the Conversion Rate that shall result from such Fundamental Change;

(xii) that Notes with respect to which a Fundamental Change Repurchase Notice is given by a Holder may be converted pursuant to Article 10 only if such Fundamental Change Repurchase Notice has been withdrawn in accordance with Section 3.02 or the Company defaults in the payment of the Fundamental Change Repurchase Price;

- 28 -

(xiii) the CUSIP number or numbers, as the case may be, of the Notes; and

(xiv) the procedures that Holders must follow to require the Company to repurchase their Notes.

No failure of the Company to give the foregoing notices and no defect therein shall limit the repurchase rights of Holders or affect the validity of the proceedings for the repurchase of the Notes pursuant to this Section 3.01.

(c) Notwithstanding the foregoing, no Notes may be repurchased by the Company at the option of the Holders upon a Fundamental Change if the principal amount of the Notes has been accelerated, and such acceleration has not been rescinded, on or prior to the Fundamental Change Repurchase Date (except in the case of an acceleration resulting from a Default by the Company in the payment of the Fundamental Change Repurchase Price with respect to such Notes).

(d) The Company shall not be required to purchase, or make an offer to purchase, the Notes upon the occurrence of a Fundamental Change otherwise required under this Section 3.01 if a third party makes such an offer in the same manner, at the same time and otherwise in compliance with the requirements set forth in this Indenture applicable to such an offer by the Company, and such third party purchases all Notes properly surrendered and not validly withdrawn upon such offer in the same manner, at the same time and otherwise in compliance with such requirements.

(e) The Company shall not be required to give such notice or repurchase the Notes as described in this Section 3.01 upon a Fundamental Change pursuant to clause (2) of the definition thereof if (1) such Fundamental Change results in the Notes becoming convertible (pursuant to the Section 10.05) into an amount of cash per Note greater than the Fundamental Change Repurchase Price (assuming the maximum amount of accrued interest would be payable based on the latest possible Fundamental Change Repurchase Date) and (2) the Company provides timely notice of the Holders’ right to convert their Notes based on such Fundamental Change as described above under Section 10.01(b)(2).

SECTION 3.02. Withdrawal of Fundamental Change Repurchase Notice . A Fundamental Change Repurchase Notice may be withdrawn by means of a written notice of withdrawal delivered to the Corporate Trust Office in accordance with the Fundamental Change Repurchase Notice at any time prior to the Fundamental Change Repurchase Expiration Time, specifying:

(1) with respect to Global Notes, the appropriate Depositary information and, with respect to certificated Notes, the certificate number, if any, of the withdrawn Notes;

(2) the principal amount of the withdrawn Notes (which must be $1,000 or an integral multiple thereof); and

(3) the principal amount, if any, of such Notes that remains subject to the original Fundamental Change Repurchase Notice, which portion must be in principal amounts of $1,000 or integral multiples of $1,000 in excess thereof.

- 29 -

SECTION 3.03. Deposit of Fundamental Change Repurchase Price . Prior to 10:00 a.m., New York City time, on the Fundamental Change Repurchase Date, the Company shall deposit with the Paying Agent or, if the Company or a Wholly Owned Subsidiary of the Company is acting as the Paying Agent, shall segregate and hold in trust as provided in Section 2.06, an amount of cash in immediately available funds, sufficient to pay the aggregate Fundamental Change Repurchase Price of all the Notes or portions thereof that are to be repurchased as of the Fundamental Change Repurchase Date.

If the Paying Agent holds on the Fundamental Change Repurchase Date cash sufficient to pay the Fundamental Change Repurchase Price of the Notes that Holders have elected to require the Company to repurchase in accordance with Section 3.01, then, as of the Fundamental Change Repurchase Date:

(i) such Notes shall cease to be outstanding, interest shall cease to accrue, whether or not book-entry transfer of the Notes has been made or the Notes have been delivered to the Paying Agent, as the case may be; and

(ii) all other rights of the Holders of such Notes shall terminate, other than the right to receive the Fundamental Change Repurchase Price upon delivery or transfer of the Notes.

SECTION 3.04. Notes Repurchased in Part . Upon presentation of any Notes repurchased only in part, the Company shall execute and the Trustee shall authenticate and make available for delivery to the Holder thereof, at the expense of the Company, a new Note or Notes, of any authorized denomination, in aggregate principal amount equal to the unrepurchased portion of the Notes presented.

SECTION 3.05. Covenant to Comply with Securities Laws Upon Repurchase of Notes . In connection with any repurchase upon a Fundamental Change, the Company shall, to the extent applicable, (i) comply with the provisions of Rule 13e-4 and any other tender offer rules under the Exchange Act that may be applicable at the time of the offer to repurchase the Notes; (ii) file a Schedule TO or any other schedule required in connection with any offer by the Company to repurchase the Notes; and (iii) comply with all other federal and state securities laws in connection with any offer by the Company to repurchase the Notes.

ARTICLE 4

Covenants

SECTION 4.01. Payment of Notes . The Company shall promptly pay the principal (including the Fundamental Change Repurchase Price, if applicable) of, the Settlement Amount owed on conversion, and interest on the Notes on the dates and in the manner provided in the Notes and in this Indenture. Principal, Settlement Amount and interest shall be considered

- 30 -

paid on the date due if on such date the Trustee or the Paying Agent holds in accordance with this Indenture money sufficient to pay all principal, Settlement Amount and interest then due and the Trustee or the Paying Agent, as the case may be, is not prohibited from paying such money to the Holders on that date pursuant to the terms of this Indenture.

The Company shall pay interest on overdue principal (including the Fundamental Change Repurchase Price, if applicable) and Settlement Amount owed on conversion to the extent it includes cash, at the rate specified therefor in the Notes, and it shall pay interest on overdue installments of interest at the rate and in the manner specified in Section 2.13.

SECTION 4.02. Maintenance of Office or Agency . The Company shall maintain an office or agency where the Notes may be surrendered for registration of transfer or exchange or for presentation for payment or for conversion or repurchase and where notices and demands to or upon the Company in respect of the Notes and this Indenture may be served. As of the date of this Indenture, such office is located at the office of the Trustee located at 1100 North Market Street, Wilmington, Delaware 19890, Attention: Teradyne, Inc. Administrator and, at any other time, at such other address as the Trustee may designate from time to time by notice to the Company. The Company shall give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency not designated or appointed by the Trustee. If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office; provided that the Corporate Trust Office shall not be an office or agency of the Company for the purpose of service of legal process against the Company.

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

SECTION 4.03. Reports; 144A Information .

(a) The Company shall file with the Trustee any documents or reports it is required to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act within 15 days after the same are required to be filed with the SEC (giving effect to any grace period provided by Rule 12b-25 or any successor rule under the Exchange Act). Any document or report that the Company files with the SEC via the SEC’s EDGAR system (or any successor thereto) shall be deemed to be filed with the Trustee as of the time such documents are filed via EDGAR (or such successor). Notwithstanding anything to the contrary, the Company shall in no event be required to file with, or otherwise provide or disclose to, the Trustee or any Holder any information for which the Company is seeking, or has received, confidential treatment from the SEC.

(b) If at any time the Company is not subject to the reporting obligations of the Exchange Act, the Company shall furnish to the Holders or beneficial holders and prospective purchasers of the Notes or the Common Stock issued upon conversion, upon their request, the information, if any, required under Rule 144A(d)(4) under the Securities Act until

- 31 -

such time as such securities are no longer “restricted securities” within the meaning of Rule 144 under the Securities Act, assuming these securities have not been owned by an Affiliate of the Company.

(c) Delivery of such reports, information and documents to the Trustee is for information purposes only and 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 an Officer’s Certificate). The Trustee is under no duty to examine such reports, information or documents to ensure compliance with the provisions of this Indenture or to ascertain the correctness or otherwise of the information or the statements contained therein. The Trustee is entitled to assume such compliance and correctness unless a Responsible Officer of the Trustee is informed otherwise.

SECTION 4.04. Compliance Certificate . The Company shall deliver to the Trustee within 120 calendar days after the end of each fiscal year of the Company (beginning with the fiscal year ended December 31, 2016) an Officer’s Certificate, stating whether or not, to the knowledge of such officer, any Default or Event of Default occurred during such period and if so, describing each Default or Event of Default, its status and the action the Company is taking or proposes to take with respect thereto.

SECTION 4.05. Statement by Officer as to Default . The Company shall deliver to the Trustee, promptly and in any event 30 calendar days after the Company becomes aware of the occurrence of any Event of Default or Default, an Officer’s Certificate setting forth the details of such Event of Default or Default, its status and the action which the Company proposes to take with respect thereto.

SECTION 4.06. Waiver of Stay, Extension or Usury Laws . The Company covenants (to the extent it may lawfully do so) that it shall not at any time insist upon, plead, or in any manner whatsoever claim or take benefit or advantage of, any stay, extension or usury law or other law which would prohibit or forgive the Company from paying all or any portion of the principal of or interest on the Notes as contemplated herein, wherever enacted, now or at any time; 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 shall not, by resort to any such law, hinder, delay or impede the execution of any power herein granted to the Trustee, but shall suffer and permit the execution of every such power as though no such law had been enacted.

SECTION 4.07. Additional Interest .

(a) If, at any time during the six-month period beginning on, and including, the date that is six months after the Last Original Issue Date of the Notes, the Company fails to timely file any document or report that the Company is required to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act, as applicable (after giving effect to all applicable grace periods thereunder and other than current reports on Form 8-K), the Company shall pay Additional Interest. The Additional Interest shall accrue on all transfer restricted Notes at an annual rate of 0.50% per annum of the principal amount of such Notes outstanding for each day during such period for which the Company’s failure to file continues. No Additional Interest

- 32 -

accruing pursuant to this Section 4.07(a) shall accrue after the six month period provided in this Section 4.07(a), regardless of whether such failure has occurred or is continuing. The Company shall not pay any Additional Interest or other amounts with respect to the Common Stock, if any, received upon conversion.

(b) Further, if, and for so long as, (i) the restrictive legend specified in Section 2.08 on the Notes has not been removed (or deemed removed pursuant to this Indenture and the certificate representing the Note), (ii) in the case of a Global Note, such Notes are not identified by an unrestricted CUSIP in the facilities of the Depositary therefor or (iii) the Notes are not otherwise freely tradable by Holders other than Affiliates of the Company or Holders that were Affiliates of the Company at any time during the three months immediately preceding (without restrictions pursuant to U.S. securities laws) as of the 380th day after the Last Original Issue Date of the Notes, the Company shall pay Additional Interest on the Notes at a rate equal to 0.50% per annum of the principal amount of Notes outstanding until such restrictive legend has been removed (or deemed removed pursuant to this Indenture and the certificate representing such Note) from the Notes, the Notes are assigned an unrestricted CUSIP and the Notes are freely tradable as described above by Holders other than Affiliates of the Company (or Holders that were Affiliates of the Company at any time during the immediately preceding three months). The restrictive legend on the Notes shall be deemed removed pursuant to the terms of this Indenture as provided in Section 2.08(c), and, at such time, the Notes will, pursuant to, and subject to the provisions of, such Section, be deemed assigned an unrestricted CUSIP number. However, for the avoidance of doubt, Global Notes will continue to bear Additional Interest pursuant to this paragraph until such time as they are identified by an unrestricted CUSIP in the facilities of the Depositary therefor, as a result of completion of such Depositary’s mandatory exchange process or otherwise.

(c) Additional Interest payable in accordance with Section 4.07(a) and Section 4.07(b) shall be payable in arrears on each Interest Payment Date following accrual in the same manner as regular interest on the Notes.

(d) The Additional Interest that is payable in accordance with Section 4.07(a) or Section 4.07(b) shall be in addition to, and not in lieu of, any Additional Interest that may be payable as a result of the Company’s election pursuant to Section 6.12. Notwithstanding anything to the contrary in this Indenture or the Notes, in no event shall Additional Interest accrue under the terms of this Indenture (aggregating any Additional Interest payable pursuant to (a) or (b) of Section 4.07 with any Additional Interest payable pursuant to Section 6.12) at a total rate per year in excess of 0.50%, regardless of the number of events or circumstances giving rise to the requirement to pay such Additional Interest.

(e) Notwithstanding the foregoing, the Company shall not be required to pay Additional Interest pursuant to Section 4.07(a) or Section 4.07(b) on any date on which (A) the Company shall have filed a Shelf Registration Statement for the resale of the Notes and the Common Stock issuable upon conversion of the Notes, (B) such Shelf Registration Statement is effective and usable by Holders identified therein as selling security holders for the resale of the Notes and the Common Stock issued upon conversion of the Notes, (C) the Holders may register the resale of their Notes under such Shelf Registration Statement on terms customary for the resale of convertible or exchangeable securities offered in reliance on Rule 144A and (D) the Notes and/or Common Stock sold pursuant to such Shelf Registration Statement become freely tradable as a result of such sale.

- 33 -

(f) If Additional Interest is payable by the Company pursuant to Section 4.07(a) or Section 4.07(b), the Company shall deliver to the Trustee an Officer’s Certificate to that effect stating (i) the amount of such Additional Interest that is payable and (ii) the date on which payment of such Additional Interest is payable. Unless and until a Responsible Officer of the Trustee receives such a certificate, the Trustee may assume without inquiry that no such Additional Interest is payable. If the Company has paid Additional Interest directly to the Persons entitled to it, the Company shall deliver to the Trustee an Officer’s Certificate setting forth the particulars of such payment. The Trustee shall have no duty to verify the Company’s determination as to whether Additional Interest is due or the Company’s calculations as to the amount of such Additional Interest.

ARTICLE 5

Successor Company

SECTION 5.01. When Company May Merge or Transfer Assets . The Company shall not, in a single transaction or a series of related transactions, consolidate with or merge with or into any other Person or sell, convey, transfer, lease or otherwise dispose of all or substantially all of the property and assets of the Company and its Subsidiaries taken as a whole to another Person, unless:

(a) either (i) the Company is the continuing corporation or (ii) the resulting, surviving or transferee Person (if other than the Company) (the “ Successor Company ”) is a corporation organized and existing under the laws of the United States, any state thereof or the District of Columbia and such Person assumes, by a supplemental indenture, all of the Company’s obligations under the Notes and this Indenture;

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

(c) the Company has delivered to the Trustee the Officer’s Certificate and Opinion of Counsel pursuant to Section 5.03.

Notwithstanding the foregoing, this Section 5.01 shall not apply to the transfer of assets between or among the Company and its Subsidiaries.

SECTION 5.02. Successor to Be Substituted . In case of any such transaction described in Section 5.01 other than a lease in which the Company is not the surviving corporation and upon the assumption by the Successor Company, by supplemental indenture, executed and delivered to the Trustee, of the due and punctual payment of the principal of and interest on all of the Notes, and the due and punctual performance and observance of all of the covenants and conditions of this Indenture to be performed or satisfied by the Company, such Successor Company shall succeed, and be substituted for, and may exercise every right and power of, the Company, and Teradyne, Inc. shall be discharged from its obligations under the

- 34 -

Notes and this Indenture, except in the case of a lease. Such Successor Company thereupon may cause to be signed, and may issue either in its own name or in the name of Teradyne, Inc. any or all of the Notes, issuable hereunder that theretofore shall not have been signed by the Company and delivered to the Trustee; and, upon the order of such Successor Company instead of the Company and subject to all the terms, conditions and limitations in this Indenture prescribed, the Trustee shall authenticate and shall deliver, or cause to be authenticated and delivered, any Notes that previously shall have been signed and delivered by the officers of the Company to the Trustee for authentication, and any Notes that such Successor Company thereafter shall cause to be signed and delivered to the Trustee for that purpose. All the Notes so issued shall in all respects have the same legal rank and benefit under this Indenture as the Notes theretofore or thereafter issued in accordance with the terms of this Indenture as though all of such Notes had been issued at the date of the execution hereof. In the event of any such consolidation, merger, sale, conveyance, transfer or other disposition, upon compliance with this Article 5, the Person named as the “Company” in the first paragraph of this Indenture or any successor that shall thereafter have become such in the manner prescribed in this Article 5 may be dissolved, wound up and liquidated at any time thereafter and such Person shall be discharged from its liabilities as obligor and maker of the Notes and from its obligations under this Indenture.

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

ARTICLE 6

Defaults and Remedies

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

(a) the Company fails to pay any interest on the Notes when due and such failure continues for a period of 30 calendar days;

(b) the Company fails to pay principal of the Notes when due at maturity, or the Company fails to pay the Fundamental Change Repurchase Price payable, in respect of any Notes when due;

(c) the Company fails to comply with its obligations to convert any Notes in accordance with this Indenture, and such failure continues for five Business Days following the scheduled settlement date for such conversion;

(d) the Company fails to comply with Article 5;

(e) the Company fails to provide notice of any transaction described under Section 10.01(b)(2);

- 35 -

(f) the Company fails to provide notice of the effective date of a Fundamental Change pursuant to Sections 3.01(b) or 10.01(b)(3), in each case, which failure continues for five calendar days after the date when due;

(g) the Company fails to perform or observe any term, covenant or agreement in the Notes or this Indenture (other than a covenant or agreement a default in whose performance or whose breach is elsewhere in this Section 6.01 specifically dealt with) for a period of 60 calendar days after the written notice specified below is given by the Trustee to the Company or by the Holders of at least 25% in aggregate principal amount of the Notes then outstanding to the Company and the Trustee, as the case may be;

(h) the failure to pay when due (whether at stated maturity or otherwise) or a default that results in the acceleration of maturity, of any indebtedness for borrowed money of the Company or any of its Significant Subsidiaries in an aggregate amount in excess of $20,000,000 (or its foreign currency equivalent), unless such indebtedness is paid or discharged, or such acceleration is rescinded, stayed or annulled, within a period of 30 calendar days after the written notice specified below is given by the Trustee to the Company or by the Holders of at least 25% in aggregate principal amount of the Notes then outstanding to the Company and the Trustee, as the case may be;

(i) a final judgment for the payment in excess of $20,000,000 (or its foreign currency equivalent) (excluding any amounts covered by insurance) rendered against the Company or any Significant Subsidiary of the Company, which judgment is not paid, discharged or stayed within 60 calendar days after (A) the date on which the right to appeal or petition for review thereof has expired if no such appeal or review has commenced, or (B) the date on which all rights to appeal or petition for review have been extinguished;

(j) the Company or any of its Significant Subsidiaries pursuant to or within the meaning of any Bankruptcy Law:

(1) commences a voluntary case;

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

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

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

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

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

(1) is for relief against the Company or any of its Significant Subsidiaries in an involuntary case;

- 36 -

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

(3) orders the winding up or liquidation of the Company or any of its Significant Subsidiaries; or

(4) any similar relief is granted under any foreign laws and the order or decree remains unstayed and in effect for 60 calendar days.

The foregoing shall constitute Events of Default whatever the reason for any such Event of Default and whether it is voluntary or involuntary or is effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body.

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

A Default under clause (g) or (h) of this Section 6.01 is not an Event of Default until the Trustee notifies the Company or the Holders of at least 25% in aggregate principal amount of the Notes then outstanding notify the Company and the Trustee, as the case may be, of the Default and the Company does not cure such Default within the time specified in clause (g) or (h) of this Section 6.01, as applicable, after receipt of such notice. Such notice must specify the Default, demand that it be remedied and state that such notice is a “ Notice of Default ”.

SECTION 6.02. Acceleration . If an Event of Default (other than an Event of Default specified in Section 6.01(j) or (k) with respect to the Company) occurs and is continuing, the Trustee by notice to the Company, or the Holders of at least 25% in aggregate principal amount of the outstanding Notes by written notice to the Company and the Trustee, may declare the principal amount of the Notes and accrued and unpaid interest on the outstanding Notes to be due and payable. If an Event of Default specified in Section 6.01(j) or (k) with respect to the Company (and not involving solely one or more of the Company’s Significant Subsidiaries) occurs and is continuing, the principal amount of the Notes and accrued and unpaid interest on the outstanding Notes shall become and be immediately due and payable without any declaration or other act on the part of the Trustee or any Holders.

After a declaration of acceleration, but before a judgment or decree for payment of the money due has been obtained by the Trustee, the Holders of a majority in aggregate principal amount of the Notes outstanding, by written notice to the Company and the Trustee, may rescind and annul such declaration if:

(a) the Company has paid (or deposited with the Trustee a sum sufficient to pay):

(1) all overdue interest on all Notes;

(2) the principal amount of any Notes that have become due otherwise than by such declaration of acceleration;

- 37 -

(3) to the extent that payment of such interest is lawful, interest upon overdue interest; and

(4) all sums paid or advanced by the Trustee under this Indenture and the compensation and reasonable expenses, disbursements and advances of the Trustee, its agents and counsel; and

(b) all Events of Default, other than the non-payment of the principal amount of the Notes and any accrued and unpaid interest that have become due solely by such declaration of acceleration or the failure to deliver consideration upon conversion, have been cured or waived.

No such rescission and annulment shall affect any subsequent Default or Event of Default or impair any right consequent thereon.

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

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

SECTION 6.04. Waiver of Past Defaults . Subject to Section 6.02, the Holders of a majority in aggregate principal amount of the Notes outstanding may, on behalf of all Holders of all the Notes, waive any existing and past Default or Event of Default under this Indenture and its consequences, except:

(i) the Company’s failure to pay principal of or interest on any Notes when due;

(ii) the Company’s failure to convert any Notes into cash and, if applicable, Common Stock pursuant to the terms of this Indenture;

(iii) the Company’s failure to pay the Fundamental Change Repurchase Price on the Fundamental Change Repurchase Date in connection with a Holder exercising its repurchase rights; or

(iv) the Company’s failure to comply with any of the provisions of this Indenture that under Section 9.02 cannot be amended without the consent of each Holder affected.

When a Default is waived, it is deemed cured, but no such waiver shall extend to any subsequent or other Default or impair any consequent right.

- 38 -

SECTION 6.05. Control by Majority . The Holders of a majority in aggregate principal amount of the outstanding Notes shall have the right to direct the time, method and place of any proceedings for any remedy available to the Trustee. However, the Trustee may refuse to follow any direction that conflicts with law or this Indenture or, subject to Section 7.01, that the Trustee determines is unduly prejudicial to the rights of other Holders or would involve the Trustee in personal liability or expense for which the Trustee has not received adequate indemnity as determined by it in good faith; provided , however , that the Trustee may take any other action deemed proper by the Trustee that is not inconsistent with such direction. Prior to taking any action hereunder, the Trustee shall be entitled to indemnity or security satisfactory to it in its sole discretion against all losses, liabilities, and expenses caused by taking or not taking such action.

SECTION 6.06. Limitation on Suits . Except to enforce the right to receive payment of principal or interest when due or consideration due upon conversion when due, no Holder may pursue any remedy with respect to this Indenture or the Notes unless:

(a) such Holder has given the Trustee written notice of an Event of Default;

(b) the Holders of at least 25% in aggregate principal amount of the outstanding Notes have made a written request to the Trustee to pursue the remedy, and offered security or indemnity against any costs, liability or expense of the Trustee;

(c) the Trustee fails to comply with such request within 60 calendar days after receipt of such request and offer of indemnity; and

(d) the Trustee has not received an inconsistent direction from the Holders of a majority in aggregate principal amount of the outstanding Notes.

A Holder may not use this Indenture to prejudice the rights of another Holder or to obtain a preference or priority over another Holder (it being understood that the Trustee shall not have any affirmative duty to ascertain whether or not such actions or forbearances are unduly prejudicial to such Holders).

SECTION 6.07. Rights of Holders to Receive Payment . Notwithstanding any other provision of this Indenture and any provision of any Note, the right of any Holder to receive payment or delivery, as the case may be, of (x) the principal (including the Fundamental Change Repurchase Price, if applicable) of, (y) accrued and unpaid interest, if any, on, and (z) the consideration due upon conversion of, such Note, on or after the respective due dates expressed or provided for in such Note or in this Indenture, or to institute suit for the enforcement of any such payment or delivery, as the case may be, on or after such respective dates against the Company shall not be impaired or affected without the consent of such Holder.

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

- 39 -

SECTION 6.09. Trustee May File Proofs of Claim . The Trustee may file such proofs of claim and other papers or documents as may be necessary or advisable in order to have the claims of the Trustee (including any claim for the compensation and reasonable expenses, disbursements and advances of the Trustee, its agents and its counsel) and the Holders allowed in any judicial proceedings relative to the Company, its Subsidiaries or its or their respective creditors or property and, unless prohibited by law or applicable regulations, may be entitled and empowered to participate as a member of any official committee of creditors appointed in such matter, and may vote on behalf of the Holders in any election of a trustee in bankruptcy or other Person performing similar functions, and any Custodian in any such judicial proceeding is hereby authorized by each Holder to make 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 it for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and its counsel, and any other amounts due the Trustee under Section 7.07.

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

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

SECOND: to Holders for amounts due and unpaid on the Notes for principal (including payments pursuant to the required repurchase provisions of the Notes) and interest, ratably without preference or priority of any kind, according to the amounts due and payable on the Notes for principal (including payments pursuant to the required repurchase provisions of the Notes) and interest or in respect of any Conversion Obligation of the Company, respectively; and

THIRD: to the Company.

The Trustee may fix a record date and payment date for any payment to Holders pursuant to this Section 6.10. At least fifteen calendar days before such record date, the Trustee shall transmit to each Holder and the Company a notice that states the record date, the payment date and amount to be paid.

SECTION 6.11. Undertaking for Costs . In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for any action taken or omitted by it as Trustee, a court in its discretion may require the filing by any party litigant in the suit of an undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable costs, including reasonable attorneys’ fees and expenses, against any party litigant in the suit, having due regard to the merits and good faith of the claims or defenses made by the party litigant. This Section 6.11 does not apply to a suit by the Trustee, a suit by a Holder pursuant to Section 6.07 or a suit by Holders of more than 10% in principal amount of the Notes.

SECTION 6.12. Failure to Comply with Reporting Covenant . Notwithstanding anything to the contrary in this Indenture, the Company may elect that the sole remedy for an Event of Default relating to the Company’s failure to comply with the covenant in Section 4.03(a), for the 365 days after the occurrence of such an Event of Default shall consist

- 40 -

exclusively of the right to receive Additional Interest on the Notes at an annual rate equal to (i) 0.25% of the outstanding principal amount of the Notes from the first date of the occurrence of such Event of Default to, but not including, the 180 ^th day thereafter (or such earlier date on which the Event of Default relating to the Company’s reporting obligations pursuant to Section 4.03(a) shall have been cured or waived) and (ii) 0.50% of the outstanding principal amount of the Notes from the 181 ^st date following the occurrence to the 365 ^th day after the first date of the occurrence of such Event of Default (or such earlier date on which the Event of Default relating to the Company’s reporting obligations pursuant to Section 4.03(a) shall have been cured or waived). Additional Interest payable pursuant to this Section 6.12 shall be in addition to, not in lieu of, any Additional Interest payable pursuant to Section 4.07(a) or Section 4.07(b) and shall be payable in the same manner as Additional Interest payable pursuant to Section 4.07(a) or Section 4.07(b). The Additional Interest payable pursuant to this Section 6.12 shall accrue on all outstanding Notes from and including the date on which an Event of Default relating to a failure to comply with the Company’s reporting obligations pursuant to Section 4.03(a) first occurs to, but not including the 366th day thereafter (or such earlier date on which the Event of Default relating to the Company’s reporting obligations pursuant to Section 4.03(a) shall have been cured or waived). On such 366th day (or earlier, if the Event of Default relating to the Company’s reporting obligations pursuant to Section 4.03(a) is cured or waived prior to such 366th day), if such Event of Default is continuing, such Additional Interest payable pursuant to this Section 6.12 shall cease to accrue and the Notes shall be subject to acceleration as provided in Section 6.02. This Section 6.12 shall not affect the rights of Holders in the event of the occurrence of any other Event of Default.

In the event the Company does not elect to pay the Additional Interest pursuant to this Section 6.12 or the Company elected to make such payment but does not pay such Additional Interest when due, the Notes shall be immediately subject to acceleration as provided in Section 6.02. In no event shall Additional Interest payable pursuant to the foregoing election accrue at a rate per year in excess of the applicable rate specified in this Section 6.12, regardless of the number of events or circumstances giving rise to requirements to pay such Additional Interest pursuant to this Section 6.12. The Company shall notify the Trustee in writing promptly upon its becoming aware of its obligation to pay Additional Interest, the date on which such Additional Interest is payable and the amount identified as Additional Interest. In no event shall the Trustee be charged with knowledge of whether such Additional Interest is due, unless it has received the written notice referred to in the preceding sentence.

Notwithstanding anything to the contrary in this Indenture or the Notes, in no event shall Additional Interest accrue under the terms of this Indenture (aggregating any Additional Interest payable pursuant to this Section 6.12 with any Additional Interest payable pursuant to Section 4.07(a) or Section 4.07(b)) at a rate per year in excess of 0.50%, regardless of the number of events or circumstances giving rise to the requirement to pay such Additional Interest.

- 41 -

ARTICLE 7

Trustee

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

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

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

(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. However, the Trustee shall examine the certificates and opinions to determine whether or not they conform to the requirements of this Indenture (but need not confirm or investigate the accuracy of mathematical calculations or other facts stated therein).

(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 paragraph (b) of this Section;

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

(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 6.05.

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

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

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

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

- 42 -

(h) Every provision of this Indenture relating to the conduct or affecting the liability of or affording protection to the Trustee shall be subject to the provisions of this Section.

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

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

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

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

(e) The Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, consent, order, approval, bond, debenture, note 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.

(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, order or direction of any of the Holders pursuant to the provisions of 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 may be incurred therein or thereby.

(g) The rights, privileges, protections, immunities and benefits given to the Trustee, including, without limitation, its rights to be indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, including, without limitation, as Conversion Agent and Bid Solicitation Agent, and to each agent, custodian and other Person employed to act hereunder.

(h) The Trustee may request that the Company deliver an Officer’s Certificate setting forth the names of individuals and/or titles of officers authorized at such time to take specified actions pursuant to this Indenture, which Officer’s Certificate may be signed by any person authorized to sign an Officer’s Certificate, including any person specified as so authorized in any such certificate previously delivered and not superseded.

- 43 -

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

(j) The Trustee shall not be required to give any note, bond or surety in respect of the execution of the trusts and powers under this Indenture.

(k) The Trustee shall not be responsible or liable for any failure or delay in the performance of its obligations under this Indenture arising out of or caused, directly or indirectly, by circumstances beyond its reasonable control, including, without limitation, acts of God; earthquakes; fire; flood; terrorism; wars and other military disturbances; sabotage; epidemics; riots; interruptions; loss or malfunction of utilities, computer (hardware or software) or communication services; accidents; labor disputes; acts of civil or military authorities and governmental action.

(l) In no event shall the Trustee be responsible or liable for special, indirect, or consequential loss or damage of any kind whatsoever (including, but not limited to, loss of profit) irrespective of whether the Trustee has been advised of the likelihood of such loss or damage and regardless of the form of action.

(m) Permissive rights of the Trustee enumerated in this Indenture shall not be construed as duties.

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

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

SECTION 7.05. Notice of Defaults . (a) The Trustee shall not be deemed to have notice of any Default, unless a Responsible Officer has actual knowledge thereof or has received written notice thereof at its Corporate Trust Office, and such notice references this Indenture. No duty imposed upon the Trustee in this Indenture shall be applicable with respect to any Default of which the Trustee is not deemed to have notice.

(b) If a Default or Event of Default occurs and is continuing and if it is known to the Trustee, the Trustee shall transmit to each Holder, at the address set forth in the Register, notice of the Default or Event of Default within 90 calendar days of obtaining actual knowledge of the occurrence of such Default or Event of Default. Except in the case of a Default or Event of Default in payment of principal or interest on any Notes or a Default in the failure to deliver the consideration due upon conversion, the Trustee may withhold notice if and so long as the Trustee in good faith determines that withholding notice is in the interests of the Holders.

- 44 -

SECTION 7.06. Reports by Trustee to Holders . Within 60 days after December 1 of each year commencing with the first December 1 after the date of this Indenture, the Trustee shall transmit to the Holders (with a copy to the Company), in the manner and to the extent provided in Trust Indenture Act Section 313(c), a brief report dated as of such December 1 that complies with Trust Indenture Act Section 313(a). The Trustee also shall comply with Trust Indenture Act Section 313(b).

SECTION 7.07. Compensation and Indemnity . The Company shall pay to the Trustee from time to time such compensation as the Company and the Trustee shall from time to time agree in writing. The Trustee’s compensation shall not be limited by any law on compensation of a trustee of an express trust. The Company shall reimburse the Trustee upon request for all reasonable expenses incurred or made by it, including costs of collection, in addition to the compensation for its services. Such expenses shall include the compensation and reasonable expenses, disbursements and advances of the Trustee’s agents, counsel, accountants and experts. The Company shall indemnify the Trustee, and hold it harmless, against any and all loss, liability or expense (including reasonable attorneys’ fees) incurred by or in connection with the offer and sale of the Notes or the administration of this trust and the performance of its duties hereunder. The Trustee shall notify the Company of any claim for which it may seek indemnity promptly upon obtaining actual knowledge thereof; provided , however , that any failure so to notify the Company shall not relieve the Company of its indemnity obligations hereunder. The Company shall defend the claim and the indemnified party shall provide reasonable cooperation at the Company’s expense in the defense. Such indemnified parties may have separate counsel and the Company shall pay the fees and expenses of such counsel; provided , however , that the Company shall not be required to pay such fees and expenses if it assumes such indemnified parties’ defense and, in such indemnified parties’ reasonable judgment, there is no conflict of interest between the Company and such parties in connection with such defense. The Company need not reimburse any expense or indemnify against any loss, liability or expense incurred by an indemnified party through such party’s own willful misconduct and negligence, as determined by a final order of a court of competent jurisdiction.

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

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

- 45 -

SECTION 7.08. Replacement of Trustee . The Trustee may resign by giving 30 days written notice to the Company. The Holders of a majority in principal amount of the Notes may remove the Trustee by giving 30 days written notice to the Trustee and may appoint a successor Trustee. The Company shall remove the Trustee if:

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

(b) the Trustee is adjudged bankrupt or insolvent;

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

(d) the Trustee otherwise becomes incapable of acting.

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

A successor Trustee shall deliver a written acceptance of its appointment to the retiring Trustee and to the Company. Thereupon the resignation or removal of the retiring Trustee shall become effective, and the successor Trustee shall have all the rights, powers and duties of the Trustee under this Indenture. The successor Trustee shall transmit a notice of its succession to Holders. The retiring Trustee shall promptly transfer all property held by it as Trustee to the successor Trustee, subject to the lien provided for in Section 7.07.

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

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

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

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

In case at the time such successor or successors by merger, conversion or consolidation to the Trustee shall succeed to the trusts created by this Indenture any of the Notes shall have been authenticated but not delivered, any such successor to the Trustee may adopt the certificate of authentication of any predecessor trustee, and deliver such Notes so authenticated; and in case at that time any of the Notes shall not have been authenticated, any successor to the Trustee may authenticate such Notes either in the name of any predecessor hereunder or in the

- 46 -

name of the successor to the Trustee; and in all such cases such certificates shall have the full force which it is anywhere in the Notes or in this Indenture provided that the certificate of the Trustee shall have.

SECTION 7.10. Eligibility; Disqualification . There shall at all times be a Trustee hereunder which shall be a Person that is eligible pursuant to the Trust Indenture Act (as if the Trust Indenture Act were applicable hereto) to act as such and has a combined capital and surplus of at least $50,000,000. If such Person publishes reports of condition at least annually, pursuant to law or to the requirements of any supervising or examining authority, then for the purposes of this Section, the combined capital and surplus of such Person shall be deemed to be its combined capital and surplus as set forth in its most recent report of condition so published. If at any time the Trustee shall cease to be eligible in accordance with the provisions of this Section, it shall resign immediately in the manner and with the effect hereinafter specified in this Article.

SECTION 7.11. Trustee’s Application for Instructions from the Company . Any application by the Trustee for written instructions from the Company (other than with regard to any action proposed to be taken or omitted to be taken by the Trustee that affects the rights of the Holders of the Notes under this Indenture) may, at the option of the Trustee, set forth in writing any action proposed to be taken or omitted by the Trustee under this Indenture and the date on and/or after which such action shall be taken or such omission shall be effective. The Trustee shall not be liable for any action taken by, or omission of, the Trustee in accordance with a proposal included in such application on or after the date specified in such application (which date shall not be less than three Business Days after the date the Company is deemed to have received such application pursuant to Section 11.01, unless any such officer shall have consented in writing to any earlier date), unless, prior to taking any such action (or the effective date in the case of any omission), the Trustee shall have received written instructions in accordance with this Indenture in response to such application specifying the action to be taken or omitted.

ARTICLE 8

Discharge of Indenture

SECTION 8.01. Discharge of Liability on Notes . (a) This Indenture shall, subject to Section 8.01(b), cease to be of further effect if:

(1) the Company (i) delivers all outstanding Notes (other than Notes replaced pursuant to Section 2.09) to the Trustee for cancellation or (ii) deposits with the Trustee or the Paying Agent after such Notes have become due and payable, whether at stated maturity, upon conversion, or on any Fundamental Change Repurchase Date, cash or, in the case of conversion, cash or cash and/or shares of Common Stock, if any, issuable upon conversion (and cash in lieu of fractional shares) (solely to satisfy outstanding conversions) calculated in accordance with this Indenture sufficient to satisfy all obligations due on all outstanding Notes and pays all other sums payable under this Indenture;

- 47 -

(2) in the case of a deposit pursuant to Section 8.01(a)(1)(ii), no Default or Event of Default with respect to the Notes shall exist on the date of such deposit and such deposit shall not result in a breach or violation of, or constitute a Default under, this Indenture; and

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

(b) Notwithstanding Section 8.01(a), the Company’s obligations in Sections 2.05, 2.06, 2.07, 2.08, 2.09, 2.10, 7.07, 7.08 and in this Article 8 shall survive until the Notes have been paid in full. Thereafter, the Company’s obligations in Sections 7.07, 8.03 and 8.04 shall survive.

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

SECTION 8.03. Repayment to Company . Subject to any applicable abandoned property law, the Trustee and the Paying Agent shall pay to the Company upon written request any money held by them for the payment of principal or interest and any shares of Common Stock or other property due in respect of converted Notes that remains unclaimed for two years, and, thereafter, Holders entitled to the money and/or securities must look to the Company for payment as general creditors.

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

- 48 -

ARTICLE 9

Amendments

SECTION 9.01. Without Consent of Holders . The Company and the Trustee may amend this Indenture or the Notes without notice to or consent of any Holder:

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

(b) to secure the Notes;

(c) to provide for the assumption of the Company’s obligations to the Holders in the event of a merger or consolidation, or sale, conveyance, transfer, lease or other disposition of all or substantially all of the property and assets of the Company and its Subsidiaries taken as a whole;

(d) to surrender any right or power conferred upon the Company;

(e) to add to the Company’s covenants for the benefit of the Holders;

(f) to cure any ambiguity or correct or supplement any inconsistent or otherwise defective provision contained in this Indenture; provided that such modification or amendment does not adversely affect the interests of the Holders in any material respect; provided , further , that any amendment made solely to conform the provisions of this Indenture to the description of the Notes contained in the Preliminary Offering Memorandum as supplemented by the related pricing term sheet shall not be deemed to adversely affect the interests of the Holders;

(g) to increase the Conversion Rate;

(h) to comply with the requirements of the SEC in order to effect or maintain the qualification of this Indenture under the Trust Indenture Act;

(i) to comply with the rules of any applicable securities depositary, including the Depositary;

(j) to permit for the issuance of Additional Notes in accordance with this Indenture;

(k) to irrevocably elect or eliminate one of the settlement methods and/or irrevocably elect a minimum Specified Dollar Amount;

(l) to add guarantees of obligations under the Notes; and

(m) to provide for a successor Trustee.

- 49 -

After a modification or amendment under this Section becomes effective, the Company shall transmit to Holders a notice briefly describing such modification or amendment. However, the failure to give such notice to all Holders, or any defect in the notice, shall not impair or affect the validity of the modification or amendment under this Section.

SECTION 9.02. With Consent of Holders . The Company and the Trustee may modify or amend this Indenture or the Notes with the written consent or affirmative vote (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes) of the Holders of a majority in aggregate principal amount of the Notes then outstanding, without notice to any other Holder. However, without the written consent or the affirmative vote (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes) of each Holder of an outstanding Note affected by such change, an amendment may not:

(a) change the Maturity Date;

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

(c) reduce the principal amount of any Notes;

(d) reduce any amount payable upon repurchase of any Notes upon a Fundamental Change;

(e) amend the contractual right expressly set forth in this Indenture or any Notes of any Holder to institute suit for the enforcement of any payment of principal (including the Fundamental Change Repurchase Price, if applicable) of, accrued and unpaid interest if any, on, and the consideration due upon conversion of, its Notes on or after the respective due dates expressed or provided for in this Indenture;

(f) change the currency in which any Notes is payable;

(g) change the Company’s obligation to repurchase any Notes upon a Fundamental Change in a manner adverse to the Holders;

(h) adversely affect the conversion right of a Holder to convert its Notes pursuant to the terms of this Indenture;

(i) make any change in Section 6.04 or the second sentence of this Section 9.02; or

(j) reduce the percentage of the Notes required for consent to any modification of this Indenture that does not require the consent of each affected Holder.

It shall not be necessary for the consent of the Holders under this Section to approve the particular form of any proposed modification or amendment. It is sufficient if such consent approves the substance of the proposed modification or amendment.

- 50 -

After a modification or amendment under this Section becomes effective, the Company shall transmit to Holders a notice briefly describing such modification or amendment. However, the failure to give such notice to all Holders, or any defect in the notice, shall not impair or affect the validity of the modification or amendment under this Section.

SECTION 9.03. Revocation and Effect of Consents and Waivers . A consent to an amendment or a waiver by a Holder shall bind the Holder and every subsequent Holder of that Note or portion of the Note that evidences the same debt as the consenting Holder’s Note, even if notation of the consent or waiver is not made on the Note. However, any such Holder or subsequent Holder may revoke the consent or waiver as to such Holder’s Note or portion of the Note if the Trustee receives the notice of revocation before the date the amendment or waiver becomes effective. An amendment or waiver becomes effective once both (i) the requisite number of consents have been received by the Company or the Trustee and (ii) such amendment or waiver has been executed by the Company and the Trustee.

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

SECTION 9.04. Notation on or Exchange of Notes . If an amendment changes the terms of a Note, the Trustee may require the Holder of the Note to deliver the Note to the Trustee. The Trustee may place an appropriate notation on the Note regarding the changed terms and return it to the Holder. Alternatively, if the Company or the Trustee so determines, the Company in exchange for the Note shall issue and the Trustee shall authenticate a new Note that reflects the changed terms. Failure to make the appropriate notation or to issue a new Note shall not affect the validity of such amendment.

SECTION 9.05. Trustee to Sign Amendments . The Trustee shall sign any amendment authorized pursuant to this Article 9 if the amendment does not adversely affect the rights, duties, liabilities or immunities of the Trustee. If it does, the Trustee may but need not sign it. In signing such amendment the Trustee shall be entitled to receive, and (subject to Sections 7.01 and 7.02) shall be fully protected in relying upon, in addition to the documents required by Section 11.03, an Officer’s Certificate and an Opinion of Counsel stating that such amendment is authorized or permitted by this Indenture and that such amendment is the legal, valid and binding obligation of the Company enforceable against it in accordance with its terms, subject to customary exceptions, and complies with the provisions hereof.

- 51 -

ARTICLE 10

Conversion of Notes

SECTION 10.01. Right to Convert .

(a) Subject to and upon compliance with the provisions of this Article 10, each Holder of a Note shall have the right, at such Holder’s option, to convert all or any portion (if the portion to be converted is $1,000 principal amount or an integral multiple in excess thereof) of such Note (i) subject to satisfaction of one or more of the conditions described in Section 10.01(b), at any time prior to the Close of Business on the Business Day immediately preceding September 15, 2023 and (ii) regardless of the conditions described in Section 10.01(b), on or after September 15, 2023 and prior to the Close of Business on the second Scheduled Trading Day immediately preceding the Maturity Date, in each case, at the Conversion Rate per $1,000 principal amount of Notes (subject to, and in accordance with, the settlement provisions of Section 10.02, the “ Conversion Obligation ”).

(b) (1)  Conversion Upon Satisfaction of Sale Price Condition. Prior to the Close of Business on the Business Day immediately preceding September 15, 2023, a Holder shall have a right to convert all or a portion of its Notes at any time during any calendar quarter (and only during such calendar quarter) beginning after March 31, 2017 if the Closing Sale Price for the Common Stock was more than 130% of the applicable Conversion Price on each applicable Trading Day for at least 20 Trading Days (whether or not consecutive) in the period of the 30 consecutive Trading Days ending on the last Trading Day of the immediately preceding calendar quarter.

(2) Conversion Upon Specified Corporate Transactions . Prior to the Close of Business on the Business Day immediately preceding September 15, 2023, a Holder shall have the right to convert all or a portion of its Notes if the Company:

(i) distributes to all or substantially all holders of its Common Stock rights, options or warrants (other than pursuant to a stockholders rights plan) entitling them to purchase, for a period of 45 calendar days or less from the issuance date for such distribution, shares of Common Stock at a price per share less than the average of the Closing Sale Prices of the Common Stock for the ten consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the declaration date for such distribution; or

(ii) distributes to all or substantially all holders of its Common Stock cash or other assets, debt securities or rights to purchase securities of the Company (other than pursuant to a stockholders rights plan), which distribution has a per share value exceeding 10% of the Closing Sale Price of the Common Stock on the Trading Day immediately preceding the declaration date for such distribution,

then, in each case, the Company shall notify all Holders at least 45 Scheduled Trading Days prior to the Ex-Dividend Date for such distribution. Once the Company has given such notice, a Holder may convert all or a portion of its Notes at any time until the earlier of the Close of Business on the Business Day immediately preceding the Ex-Dividend Date and the Company’s announcement that such distribution shall not take place. A Holder may not convert any of its Notes based on this Section 10.01(b)(2) if as a result of holding its Notes such Holder shall otherwise participate in the distribution, without

- 52 -

conversion as a result of holding the Notes, at the same time and on the same terms as holders of the Common Stock as if such Holder held a number of shares of Common Stock equal to the Conversion Rate on the Record Date of such distribution for each $1,000 principal amount of Notes held by such Holder (calculated on an aggregate basis per Holder).

(3) Conversion Upon a Fundamental Change. Prior to the Close of Business on the Business Day immediately preceding September 15, 2023, if a Fundamental Change occurs, or if the Company is a party to a consolidation, merger, binding share exchange, or sale, conveyance, transfer, lease or other disposition of all or substantially all of the Company and its subsidiaries’ assets, taken as a whole, in each case, pursuant to which the Common Stock would be converted into Reference Property in a transaction described in Section 10.05, a Holder shall have the right to convert all or a portion of its Notes at any time beginning on the effective date of such transaction or event until the earlier of (x) 35 Trading Days after the effective date of such transaction or event, if such transaction or event also constitutes a Fundamental Change, until the related Fundamental Change Repurchase Date and (y) the second Scheduled Trading Day immediately preceding the Maturity Date. The Company shall notify all Holders of the effective date of any Fundamental Change no later than one Business Day after such effective date. If a Holder has submitted all or a portion of Notes for repurchase, unless such Holder has validly withdrawn such Notes in a timely fashion, such Holder’s conversion rights with respect to the Notes so subject to repurchase shall expire at the Close of Business on the Business Day immediately preceding the Fundamental Change Repurchase Date, unless the Company defaults in the payment of the Fundamental Change Repurchase Price. If a Holder has submitted any Notes for repurchase, such Notes may be converted only if such Holder submits a valid withdrawal notice, and, if the Notes submitted are evidenced by a Global Note, such Holder complies with appropriate Depositary procedures.

(4) Conversion Upon Satisfaction of Trading Price Condition . Prior to the Close of Business on the Business Day immediately preceding September 15, 2023, a Holder shall have a right to convert all or a portion of its Notes during the five Business Day period following any five consecutive Trading Day period (the “ Measurement Period ”) in which the Trading Price per $1,000 principal amount of Notes, as determined following a request by a Holder in accordance with the procedures set forth in this Section 10.01(b)(4), for each Trading Day of such Measurement Period was less than 98% of the product of the Closing Sale Price of the Common Stock and the Conversion Rate on such Trading Day. The Bid Solicitation Agent (if other than the Company) shall have no obligation to determine the Trading Price per $1,000 principal amount of Notes unless the Company has requested such determination (or, if the Company is acting as Bid Solicitation Agent, the Company shall have no obligation to determine the Trading Price) unless and until a Holder of at least $5,000,000 aggregate principal amount of Notes provides the Company with reasonable evidence that the Trading Price per $1,000 principal amount of Notes would be less than 98% of the product of the Closing Sale Price of the Common Stock and the Conversion Rate and such Holder requests that the Company requests that the Bid Solicitation Agent determine or, if the Company is acting as Bid Solicitation Agent, requests that the Company determine, the Trading Price of the Notes. At such time, the Company shall instruct the Bid Solicitation Agent (if other than

- 53 -

the Company) to determine or, if the Company is acting as Bid Solicitation Agent, the Company shall determine, the Trading Price of the Notes for each Trading Day beginning on the next Trading Day and on each successive Trading Day until a Trading Day occurs on which the Trading Price per $1,000 principal amount of Notes is greater than or equal to 98% of the product of the Closing Sale Price of the Common Stock and the applicable Conversion Rate on such Trading Day. At such time as the Company directs the Bid Solicitation Agent in writing to solicit bid quotations, the Company shall provide the Bid Solicitation Agent with the names and contact details of the three independent nationally recognized securities dealers the Company selects, and the Company shall direct those securities dealers to provide bids to the Bid Solicitation Agent. If the Trading Price condition has been met, the Company shall so notify the Holders, the Trustee and the Conversion Agent (if other than the Trustee). If, at any time after the Trading Price condition has been met, the Trading Price per $1,000 principal amount of Notes is greater than or equal to 98% of the product of the Closing Sale Price of the Common Stock and the Conversion Rate for such date, the Company shall so promptly notify the Holders, the Trustee and the Conversion Agent (if other than the Trustee).

SECTION 10.02. Conversion Procedures; Settlement Upon Conversion; No Adjustment for Interest or Dividends; Cash Payments in Lieu of Fractional Shares . (a) In order to exercise the conversion right with respect to any Notes in certificated form, a Holder must:

(i) complete and manually sign an irrevocable notice of conversion in the form entitled “Form of Conversion Notice” attached to the reverse of such certificated Note (or a facsimile thereof) (a “ Conversion Notice ”);

(ii) deliver such completed Conversion Notice and certificated Note to be converted to the Conversion Agent at the office of the Conversion Agent;

(iii) to the extent any shares of Common Stock issuable upon conversion are to be issued in a name other than the Holder’s, furnish appropriate endorsements and transfer documents as may be required by the Conversion Agent;

(iv) if required pursuant to Section 10.02(d), pay funds equal to interest payable on the next Interest Payment Date to which such Holder is not entitled; and

(v) if required pursuant to Section 10.02(g), pay all transfer or similar taxes, if any.

In order to exercise the conversion right with respect to any interest in a Global Note, a Holder must:

(i) deliver to the Depositary the appropriate instruction form for conversion pursuant to the Depositary’s conversion program;

(ii) to the extent any shares of Common Stock issuable upon conversion are to be issued in a name other than the Holder’s, furnish appropriate endorsements and transfer documents as may be required by the Conversion Agent;

- 54 -

(iii) if required pursuant to Section 10.02(d), pay funds equal to interest payable on the next Interest Payment Date to which such Holder is not entitled; and

(iv) if required pursuant to Section 10.02(g), pay all transfer or similar taxes, if any.

The date that the Holder satisfies the foregoing requirements is the “ Conversion Date .” The Notes shall be deemed to have been converted immediately prior to the Close of Business on the Conversion Date.

(b) Subject to this Section 10.02, upon conversion of any Note, the Company shall, at its election, pay or deliver, as the case may be, to the converting Holder, in full satisfaction of its Conversion Obligation, cash (“ Cash Settlement ”), shares of Common Stock (“ Physical Settlement ”) or a combination of cash and shares of Common Stock (“ Combination Settlement ”), as set forth in this Section 10.02.

(i) All conversions occurring on or after September 15, 2023 shall be settled using the same Settlement Method and the same relative proportion of cash and/or shares of Common Stock as all other conversions occurring on or after September 15, 2023. If the Company elects a Settlement Method for conversions occurring on or after September 15, 2023, the Company shall deliver notice to Holders and the Trustee of such Settlement Method the Company has selected no later than September 15, 2023. If the Company does not timely elect a Settlement Method for conversion occurring on or after September 15, 2023, the Company shall no longer have the right to elect Cash Settlement or Physical Settlement with respect to that Conversion Date and the Company shall be deemed to have elected Combination Settlement in respect of its Conversion Obligation, and the Specified Dollar Amount per $1,000 principal amount of Notes shall be equal to $1,000. If the Company has timely elected Combination Settlement in respect of any such conversion, but fails to timely notify the Conversion Agent of the Specified Dollar Amount per $1,000 principal amount of Notes, such Specified Dollar Amount with respect to that Conversion Date shall be deemed to be $1,000.

(ii) With respect to conversions occurring prior to September 15, 2023, the Company shall use the same Settlement Method (including the same relative proportion of cash and/or shares of Common Stock) for all conversions occurring on the same Conversion Date. Except for any conversions that occur on or after September 15, 2023, the Company shall not have any obligation to use the same Settlement Method with respect to conversions that occur on different Conversion Dates. Prior to September 15, 2023, if the Company elects a Settlement Method, the Company shall deliver notice to converting Holders and the Trustee of such Settlement Method the Company has selected no later than the Close of Business on the second Trading Day immediately following the relevant Conversion Date.

- 55 -

If the Company does not timely elect a Settlement Method in respect of a particular Conversion Date, the Company shall no longer have the right to elect Cash Settlement or Physical Settlement with respect to that Conversion Date and the Company shall be deemed to have elected Combination Settlement in respect of its Conversion Obligation, and the Specified Dollar Amount per $1,000 principal amount of Notes shall be equal to $1,000. If the Company has timely elected Combination Settlement in respect of any such conversion, but fails to timely notify the Conversion Agent of the Specified Dollar Amount per $1,000 principal amount of Notes, such Specified Dollar Amount with respect to that Conversion Date shall be deemed to be $1,000.

(iii) The cash, shares of Common Stock or combination of cash and shares of Common Stock payable or deliverable by the Company in respect of any conversion of Notes (the “ Settlement Amount ”) shall be computed by the Company as follows:

(A) if the Company elects to satisfy its Conversion Obligation in respect of such conversion by Physical Settlement, the Company shall deliver to the converting Holder in respect of each $1,000 principal amount of Notes being converted a number of shares of Common Stock equal to the Conversion Rate on the Conversion Date (plus cash in lieu of any fractional share of Common Stock issuable upon conversion);

(B) if the Company elects to satisfy its Conversion Obligation in respect of such conversion by Cash Settlement, the Company shall pay to the converting Holder in respect of each $1,000 principal amount of Notes being converted cash in an amount equal to the sum of the Daily Conversion Values for each of the 40 consecutive VWAP Trading Days during the relevant Observation Period; and

(C) if the Company elects (or is deemed to have elected) to satisfy its Conversion Obligation in respect of such conversion by Combination Settlement, the Company shall pay and deliver, as the case may be, to the converting Holder in respect of each $1,000 principal amount of Notes being converted a Settlement Amount equal to the sum of the Daily Settlement Amounts for each of the 40 consecutive VWAP Trading Days during the relevant Observation Period (plus cash in lieu of any fractional share of Common Stock issuable upon conversion).

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

(iv) The Daily Settlement Amounts (if applicable) and the Daily Conversion Values (if applicable) shall be determined by the Company promptly following the last VWAP Trading Day of the relevant Observation Period. Promptly after such determination of the Daily Settlement Amounts or the Daily

- 56 -

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

(v) Subject to the provisions of Section 10.03 and Section 10.05, the Company shall pay or deliver, as the case may be, the Settlement Amount due in respect of the Conversion Obligation as follows:

(A) if the Company elects Physical Settlement, (x) with respect to conversions occurring prior to the final Regular Record Date preceding the Maturity Date, the third Business Day immediately following the relevant Conversion Date and (y) with respect to conversions occurring on or after the final Regular Record Date preceding the Maturity Date, on the Maturity Date; or

(B) if the Company elects Cash Settlement or if the Company elects or is deemed to elect Combination Settlement, the third Business Day immediately following the last VWAP Trading Day of the relevant Observation Period.

(c) Each conversion will be deemed to have been effected as to any Notes surrendered for conversion on the applicable Conversion Date; provided , however , that the Person in whose name any shares of Common Stock shall be issuable upon such conversion shall be treated as the holder of record of such shares as of the Close of Business on the Conversion Date, in the case of Physical Settlement, or the last VWAP Trading Day of the relevant Observation Period, in the case of Combination Settlement.

(d) If a Holder converts any Notes after the Close of Business on the Regular Record Date for an interest payment but prior to the corresponding Interest Payment Date, such Holder shall receive on the earlier of the corresponding Interest Payment Date and the date the Company delivers the Settlement Amount in respect of such conversion, the interest accrued and unpaid on such Holder’s Notes, notwithstanding such Holder’s conversion of those Notes prior to the Interest Payment Date, assuming such Holder was the Holder of record on the corresponding Regular Record Date. However, except as provided in the next sentence, at the time such Holder surrenders its Notes for conversion (whether or not such Holder was the Holder of record), such Holder must pay the Company an amount equal to the interest that has accrued and shall be paid on the Notes being converted on the corresponding Interest Payment Date. Such Holder is not required to make such payment:

(1) if such Holder converts its Notes after the Close of Business on December 1, 2023, which is the Regular Record Date immediately preceding the Maturity Date;

(2) if such Holder converts its Notes in connection with a Fundamental Change and the Company has specified a Fundamental Change Repurchase Date that is after a Regular Record Date and on or prior to the Business Day immediately following the corresponding Interest Payment Date; or

(3) to the extent of any overdue interest, if overdue interest exists at the time of conversion with respect to such Holder’s Notes.

- 57 -

For the avoidance of doubt, all Holders on the Regular Record Date immediately preceding the Maturity Date and any Fundamental Change Repurchase Date shall receive and retain the full interest payment due on the Maturity Date or other applicable Interest Payment Date regardless of whether their Notes have been converted following such Regular Record Date.

If a Holder has already delivered a Fundamental Change Repurchase Notice pursuant to Section 3.01 with respect to a Note, such Holder may not surrender that Note for conversion until such Holder has validly withdrawn the Fundamental Change Repurchase Notice in accordance with Section 3.02, except as to a portion of such Note that is not subject to such Fundamental Change Repurchase Notice.

(e) In case any certificated Note shall be surrendered for partial conversion, the Company shall execute and the Trustee shall authenticate and deliver to or upon the written order of the Holder of the certificated Note so surrendered, without charge to such Holder, a new certificated Note or Notes in authorized denominations in an aggregate principal amount equal to the unconverted portion of the surrendered certificated Note.

(f) Upon the conversion of an interest in a Global Note, the Trustee and the Depositary shall reduce the principal amount of such Global Note in their records.

(g) The issue of stock certificates on conversions of Notes shall be made without charge to the converting holder of Notes for any taxes or duties in respect of the issue thereof. The Company shall not, however, be required to pay any such tax or duty which may be payable in respect of any transfer involved in the issue and delivery of stock in any name other than that of the holder of any Notes converted, and the Company shall not be required to issue or deliver any such stock certificate unless and until the Person or Persons requesting the issue thereof shall have paid to the Company the amount of such tax or duty or shall have established to the satisfaction of the Company that such tax has been paid.

(h) Except as provided in this Section 10.02, upon conversion, Holders shall not receive any separate cash payment of accrued and unpaid interest on the Notes. Accrued and unpaid interest to the Conversion Date shall be deemed to be paid in full with the cash paid and shares of Common Stock issued, if any, upon conversion rather than cancelled, extinguished or forfeited. With respect to Notes converted pursuant to Combination Settlement, accrued and unpaid interest shall be deemed to be paid first out of any cash paid upon such conversion.

(i) The Company shall not issue fractional shares of Common Stock upon conversion of the Notes. If any fractional shares of Common Stock would be issuable upon the conversion of any Note or Notes, the Company shall instead pay cash in lieu of fractional share of Common Stock issuable upon conversion in an amount based on (i) the Daily VWAP on the

- 58 -

relevant Conversion Date if the Company elects Physical Settlement or (ii) the Daily VWAP on the last VWAP Trading Day of the relevant Observation Period if the Company elects or is deemed to elect Combination Settlement.

(j) Except as described under Section 10.04, the Company shall not make any payment or other adjustment for dividends on any Common Stock issued upon conversion of the Notes.

(k) The Trustee shall have no duty to monitor or notify the Holders as to whether any of the conditions to conversion have occurred.

SECTION 10.03. Adjustment to Conversion Rate Upon a Make-Whole Fundamental Change . If the Effective Date (as defined below) of a Fundamental Change (determined after giving effect to any exceptions to or exclusions from such definition, but without regard to the proviso in clause (2) of the definition thereof, a “ Make-Whole Fundamental Change ”) occurs prior to the Maturity Date of the Notes and a Holder elects to convert its Notes in connection with such Make-Whole Fundamental Change, the Company shall increase the Conversion Rate by an additional number of shares of Common Stock (the “ Additional Shares ”).

The number of Additional Shares shall be determined by reference to the table below, based on the date on which the Make-Whole Fundamental Change becomes effective (the “ Effective Date ”) and the Stock Price paid (or deemed paid) per share for the Common Stock in such Make-Whole Fundamental Change.

The Company shall notify the Holders of the Effective Date of any Make-Whole Fundamental Change no later than one Business Day after such Effective Date.

A conversion of the Notes shall be deemed for these purposes to be “in connection with” a Make-Whole Fundamental Change if the Conversion Notice is received by the Conversion Agent on or after the Effective Date of the Make-Whole Fundamental Change but before the Close of Business on the Business Day immediately preceding the related Fundamental Change Repurchase Date (or, in the case of a Make-Whole Fundamental Change that would have been a Fundamental Change but for the proviso in clause (2) of the definition thereof, the 35 ^th Trading Day immediately following the Effective Date of such Make-Whole Fundamental Change).

The number of Additional Shares set forth in the table below shall be adjusted in the same manner as and as of any date on which the Conversion Rate of the Notes is adjusted pursuant to this Article 10. The Stock Prices set forth in the first row of the table below ( i.e. , the column headers) shall be simultaneously adjusted to equal the Stock Prices immediately prior to such adjustment, multiplied by a fraction, the numerator of which shall be the Conversion Rate immediately prior to the adjustment and the denominator of which shall be the Conversion Rate as so adjusted.

- 59 -

The following table sets forth the number of Additional Shares per $1,000 principal amount of Notes by which the Conversion Rate shall be increased upon conversion in connection with a Make-Whole Fundamental Change:

provided, however , that:

(1) if the exact Stock Price is between two Stock Prices listed in the table above under the column titled “Stock Price,” or if the exact Effective Date of such Make-Whole Fundamental Change is between two Effective Dates listed in the table above in the rows immediately below the title “Effective Date,” then the number of Additional Shares by which the Conversion Rate shall be increased shall be determined by a straight-line interpolation between the number of Additional Shares set forth for the higher and lower Stock Prices and the earlier and later Effective Dates based on a 360-day year; and

(2) (a) if the exact Stock Price is greater than $90.00 per share (subject to adjustment in the same manner and at the same time as the Stock Prices listed in the table above), then the Conversion Rate shall not be increased, or (b) if the exact Stock Price is less than $24.97 per share (subject to adjustment in the same manner and at the same time as the Stock Prices listed in the table above), then the Conversion Rate shall not be increased.

Notwithstanding the foregoing, in no event shall the total number of shares of Common Stock issuable upon conversion exceed 40.0480 shares per $1,000 principal amount of Notes, subject to adjustment in the same manner and at the same time as the Conversion Rate pursuant to this Article 10.

- 60 -

SECTION 10.04. Adjustment of Conversion Rate . The Conversion Rate shall be adjusted from time to time by the Company if any of the following events occurs, except that the Company shall not make any adjustments to the Conversion Rate if Holders participate (other than in the case of a share split or a share combination), at the same time and upon the same terms as holders of the Common Stock and solely as a result of holding the Notes, in any of the transactions described in this Section 10.04, without having to convert their Notes, as if they held a number of shares of Common Stock equal to the applicable Conversion Rate for each $1,000 principal amount of Notes held by such Holders (calculated on an aggregate basis per Holder):

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

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

(b) If the Company shall issue to all or substantially all holders of its Common Stock any rights, options or warrants (other than pursuant to a stockholders rights plan) entitling them to purchase, for a period of 45 calendar days or less from the issuance date for such distribution, shares of Common Stock at a price per share that is less than the average Closing Sale Price of the Common Stock for the ten consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the declaration date for such distribution, the Conversion Rate shall be increased based on the following formula:

- 61 -

where,

Any increase made under this clause (b) shall be made successively whenever any such rights, options or warrants are issued and shall become effective immediately after the Open of Business on the Ex-Dividend Date for such issuance. To the extent that such rights, options or warrants are not exercised prior to their expiration or shares of Common Stock are not delivered upon exercise of such rights, options or warrants, the Conversion Rate shall be readjusted to the Conversion Rate that would then be in effect had the increase with respect to the issuance of such rights, options or warrants been made on the basis of delivery of only the number of shares of Common Stock actually delivered. If such rights, options or warrants are not so issued, or if such rights, options or warrants are not so exercised prior to their expiration, the Conversion Rate shall be decreased to the Conversion Rate that would then be in effect if such Ex-Dividend Date for such issuance had not occurred.

In determining whether any rights, options or warrants entitle the holders of Common Stock to subscribe for or purchase shares of Common Stock at less than such average of the Closing Sale Prices for the ten consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the Ex-Dividend Date for such issuance, and in determining the aggregate offering price of such shares of Common Stock, there shall be taken into account any consideration received by the Company for such rights, options or warrants and any amount payable on exercise or conversion thereof and the value of such consideration (if other than cash, to be determined in good faith by the Company).

(c) If the Company distributes shares of its Capital Stock, evidences of its indebtedness, other of its assets or property or rights, options or warrants to acquire its Capital Stock or other securities to all or substantially all holders of Common Stock, excluding:

(i) dividends, distributions or issuances as to which an adjustment was effected (without regard to the 1% Exception) pursuant to clause (a) or (b) above;

- 62 -

(ii) rights issued under a stockholders rights plan;

(iii) dividends or distributions paid exclusively in cash as to which the provisions set forth in clause (d) below shall apply (without regard to the 1% Exception);

(iv) distributions of Reference Property in a transaction described in Section 10.05; and

(v) Spin-Offs described below in the second paragraph of this clause (c),

then the Conversion Rate shall be increased based on the following formula:

Any increase made under the portion of this clause (c) above shall become effective immediately after the Open of Business on the Ex-Dividend Date for such distribution. If such distribution is not so paid or made, the Conversion Rate shall be decreased to be the Conversion Rate that would then be in effect if such distribution had not been declared.

Notwithstanding the foregoing, if “FMV” (as defined above) is equal to or greater than “SP ₀ ” (as defined above), in lieu of the foregoing increase, each Holder shall receive, in respect of each $1,000 principal amount thereof, at the same time and upon the same terms as holders of the Common Stock, the amount and kind of the Company’s Capital Stock, evidences of the Company’s indebtedness, other assets or property of the Company or rights, options or warrants to acquire the Company’s Capital Stock or other securities that such Holder would have received if such Holder owned a number of shares of Common Stock equal to the Conversion Rate in effect on the Ex-Dividend Date for the distribution.

- 63 -

With respect to an adjustment pursuant to this clause (c) where there has been a payment of a dividend or other distribution on the Common Stock in shares of Capital Stock of any class or series, or similar equity interest, of or relating to a Subsidiary or other business unit that are, or when issued shall be, listed or admitted for trading on a U.S. national securities exchange (a “ Spin-Off ”) the Conversion Rate shall be increased based on the following formula:

Any adjustment to the Conversion Rate under the preceding paragraph of this clause (c) shall be made immediately after the Open of Business on the day after the last day of the Valuation Period, but shall be given effect as of the Open of Business on the Ex-Dividend Date for the Spin-Off. Notwithstanding anything to the contrary, (i) if the settlement date for a Note whose conversion is to be settled pursuant to Cash Settlement or Combination Settlement occurs on or before the last Trading Day in the Valuation Period for any Spin-Off and any VWAP Trading Day in the Observation Period for such conversion occurs on any Trading Day within such Valuation Period, then, solely for purposes of determining the consideration due in respect of such conversion, such Valuation Period shall be deemed to be the period from, and including, the Ex-Dividend Date for such Spin-Off to, and including, the last VWAP Trading Day in such Observation Period (or, if such VWAP Trading Day is not a Trading Day, the immediately preceding Trading Day); and (ii) if the settlement date for a Note whose conversion is to be settled pursuant to Physical Settlement occurs on or before the last Trading Day in the Valuation Period for a Spin-Off and the Conversion Date for such conversion occurs on any Trading Day within such Valuation Period, then, solely for purposes of determining the consideration due in respect of such conversion, such Valuation Period shall be deemed to be the period from, and including, the Ex-Dividend Date for such Spin-Off to, and including, such Conversion Date (or, if such Conversion Date is not a Trading Day, the immediately preceding Trading Day).

- 64 -

For purposes of this Section 10.04(c) and subject in all respects to Section 10.08, rights, options or warrants distributed by the Company to all or substantially all holders of its Common Stock entitling the holders thereof to subscribe for or purchase shares of the Company’s Capital Stock, including Common Stock (either initially or under certain circumstances), which rights, options or warrants, until the occurrence of a specified event or events (each a “Trigger Event”):

shall be deemed not to have been distributed for purposes of this Section 10.04(c) (and no adjustment to the Conversion Rate under this Section 10.04(c) shall be required) until the occurrence of the earliest Trigger Event, whereupon such rights, options or warrants shall be deemed to have been distributed and an appropriate adjustment (if any is required) to the Conversion Rate shall be made under this Section 10.04(c). If any such right, option or warrant, including any such existing rights, options or warrants distributed prior to the date of this Indenture, are subject to events, upon the occurrence of which such rights, options or warrants become exercisable to purchase different securities, evidences of indebtedness or other assets, then the date of the occurrence of any and each such event shall be deemed to be the date of distribution and record date with respect to new rights, options or warrants with such rights (and a termination or expiration of the existing rights, options or warrants without exercise by any of the holders thereof). In addition, in the event of any distribution (or deemed distribution) of rights, options or warrants, or any Trigger Event or other event (of the type described in the preceding sentence) with respect thereto that was counted for purposes of calculating a distribution amount for which an adjustment to the Conversion Rate under this Section 10.04(c) was made:

(1) in the case of any such rights, options or warrants that shall all have been redeemed or repurchased without exercise by any holders thereof, the Conversion Rate shall be readjusted upon such final redemption or repurchase to give effect to such distribution or Trigger Event, as the case may be, as though it were a cash distribution, equal to the per share redemption or repurchase price received by a holder or holders of Common Stock with respect to such rights, options or warrants (assuming such holder had retained such rights, options or warrants), made to all holders of Common Stock as of the date of such redemption or repurchase; and

(2) in the case of such rights, options or warrants that shall have expired or been terminated without exercise by any holders thereof, the Conversion Rate shall be readjusted as if such rights, options or warrants had not been issued.

- 65 -

(d) If the Company pays any cash dividends or distributions paid exclusively in cash to all or substantially all holders of its Common Stock (other than dividends or distributions made in connection with the Company’s liquidation, dissolution or winding-up or upon a merger, consolidation or sale, lease, transfer, conveyance or other disposition resulting in a change in the conversion consideration as described under Section 10.05), other than a regular quarterly cash dividend that does not exceed $0.06 per share (the “ Dividend Threshold Amount ”), the Conversion Rate shall be increased based on the following formula:

The Dividend Threshold Amount is subject to adjustment on an inversely proportional basis whenever the Conversion Rate is adjusted; provided that no adjustment shall be made to the Dividend Threshold Amount for any adjustment to the Conversion Rate under this clause (d).

Notwithstanding the foregoing, if “C” (as defined above) is equal to or greater than “SP ₀ ” (as defined above), in lieu of the foregoing increase, each Holder shall receive, in respect of each $1,000 principal amount thereof, at the same time and upon the same terms as holders of shares of Common Stock, the amount of cash that such Holder would have received as if such Holder owned a number of shares of Common Stock equal to the Conversion Rate in effect on the Ex-Dividend Date for such cash dividend or distribution. To the extent such dividend or distribution is declared but not made or paid, the Conversion Rate shall be readjusted to the Conversion Rate that would then be in effect had the adjustment been made on the basis of only the dividend or distribution, if any, actually made or paid.

Any increase made under this clause (d) shall become effective immediately after the Open of Business on the Ex-Dividend Date for such cash dividend or distribution.

- 66 -

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

where,

Any adjustment to the Conversion Rate under this clause (e) shall be made immediately prior to the Open of Business on the day following the last day of the Averaging Period, but shall be given effect as of the Open of Business on the Trading Day immediately following the Expiration Date. Notwithstanding anything to the contrary, (i) if the settlement date for a Note whose conversion is to be settled pursuant to Cash Settlement or Combination Settlement occurs on or before the last Trading Day in the Averaging Period for such tender or exchange offer and any VWAP Trading Day in the Observation Period for such conversion occurs on any Trading Day within such Averaging Period, then, solely for purposes of determining the consideration due in respect of such conversion, such Averaging Period shall be deemed to be the period from, and including, the Trading Day immediately after the Expiration Date for such tender or exchange offer to, and including, the last VWAP Trading Day in such Observation Period (or, if such VWAP Trading Day is not a Trading Day, the immediately preceding Trading Day); and (ii) if the settlement date for a Note whose conversion is to be settled pursuant to Physical Settlement occurs on or before the last Trading Day in the Averaging Period for such tender or exchange offer and the Conversion Date for such conversion occurs on any Trading Day within such Averaging Period, then, solely for purposes of determining the consideration due in respect of such conversion, such Averaging Period shall be deemed to be the period from, and including, the Trading Day immediately after the Expiration Date to, and including, such Conversion Date (or, if such Conversion Date is not a Trading Day, the immediately preceding Trading Day).

- 67 -

(f) Notwithstanding this Section 10.04, if a Conversion Rate adjustment described in subsections (a) through (e) of this Section 10.04 becomes effective on any Ex-Dividend Date, and a Holder has converted its Notes on or after such Ex-Dividend Date and on or prior to the related Record Date and would be treated as the record holder of the shares of Common Stock as of the related Conversion Date as described under Section 10.02 based on an adjusted Conversion Rate for such Ex-Dividend Date, then, notwithstanding the foregoing Conversion Rate adjustment provisions, the Conversion Rate adjustment relating to such Ex-Dividend Date shall not be made for such converting Holder. Instead, such Holder shall be treated as if such Holder were the record owner of such shares of Common Stock (which shall be calculated on an unadjusted basis) and participate in the related dividend, distribution or other event giving rise to such adjustment.

(g) Notwithstanding this Section 10.04, if a Holder converts a Note, Combination Settlement is applicable to such Note and the Daily Settlement Amount for any VWAP Trading Day during the Observation Period applicable to such Note (x) is calculated based on a Conversion Rate adjusted on account of any event described in clauses (a) through (e) of this Section 10.04 and (y) includes any shares of Common Stock that entitle their holder to participate in such event, then, notwithstanding the foregoing Conversion Rate adjustment provisions in this Section 10.04, such Conversion Rate adjustment shall not be made for such converting Holder for such Trading Day. Instead, such Holder shall be treated as if such Holder were the record owner of the shares of Common Stock on an unadjusted basis and participate in the related dividend, distribution or other event giving rise to such adjustment.

(h) To the extent permitted by applicable law and subject to the applicable rules of The New York Stock Exchange, the Company (i) may increase the Conversion Rate of the Notes by any amount for a period of at least 20 Business Days if the Company determines that such increase would be in the Company’s best interest and (ii) may (but is not required to) increase the Conversion Rate of the Notes to avoid or diminish income tax to holders of Common Stock or rights to purchase shares of Common Stock in connection with a dividend or distribution of shares (or rights to acquire shares) or similar event.

(i) All calculations and other determinations under this Article 10 shall be made by the Company and shall be made to the nearest one-ten thousandth (1/10,000th) of a share. No adjustment pursuant to this Section 10.04 shall be made to the Conversion Rate unless such adjustment would require a change of at least 1% to the Conversion Rate then in effect at such time. However, any adjustments that are less than 1% of the Conversion Rate shall be carried forward and taken into account in any subsequent adjustment, regardless of whether the aggregate adjustment is less than 1%, (i) annually on the anniversary of the first date of issue of the Notes and (ii) otherwise (A) upon conversion of any Notes, (B) on each VWAP Trading Day of any Observation Period or (C) prior to any Fundamental Change Repurchase Date, unless such adjustment has already been made. The deferral provisions described in this Section 10.04(i) is referred to as the “ 1% Exception .”

- 68 -

(j) Whenever the Conversion Rate is adjusted as herein provided, the Company shall as soon as reasonably practicable deliver to the Trustee (and the Conversion Agent if not the Trustee) an Officer’s Certificate setting forth the Conversion Rate after such adjustment and setting forth a brief statement of the facts requiring such adjustment. Failure to deliver such notice shall not affect the legality or validity of any such adjustment. Unless and until a Responsible Officer of the Trustee shall have received such Officer’s Certificate, the Trustee shall not be deemed to have knowledge of any adjustment of the Conversion Rate and may assume without inquiry that the last Conversion Rate of which it has knowledge is still in effect. As soon as reasonably practicable after delivery of such certificate, the Company shall transmit to Holders a notice of such adjustment of the Conversion Rate setting forth the adjusted Conversion Rate and the date on which such adjustment became effective. Failure to transmit such notice shall not affect the legality or validity of any such adjustment.

(k) Except as stated in Section 10.03, this Section 10.04 and Section 10.08, the Company shall not adjust the Conversion Rate for any transaction or event. Without limiting the foregoing, the Conversion Rate shall not be required to be adjusted:

(1) upon the issuance of Common Stock at a price below the Conversion Price or otherwise;

(2) upon the issuance of any shares of Common Stock pursuant to any present or future plan providing for the reinvestment of dividends or interest payable on the Company’s securities and the investment of additional optional amounts in shares of Common Stock under any plan;

(3) upon the issuance of any shares of Common Stock or options or rights to purchase those shares pursuant to any present or future employee, director or consultant benefit plan or program of or assumed by the Company or any of its Subsidiaries;

(4) upon the issuance of any shares of Common Stock or options or rights to purchase those shares pursuant to any present or future employee, director or consultant benefit plan or program of or assumed by the Company or any of its Subsidiaries;

(5) upon the issuance of any shares of Common Stock pursuant to any option, warrant, right or exercisable, exchangeable or convertible security not described in clause (4) above and outstanding as of the date the Notes were first issued;

(6) for the repurchase of any shares of Common Stock that is not a tender offer or exchange offer of the nature described in Section 10.04(e), including, but not limited to, pursuant to an open-market share repurchase program or a structured or derivative transaction;

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

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

(l) For purposes of this Section 10.04, the number of shares of Common Stock at any time outstanding shall not include shares held in the treasury of the Company but shall

- 69 -

include shares issuable in respect of scrip certificates issued in lieu of fractions of shares of Common Stock. The Company shall not pay any dividend or make any distribution on shares of Common Stock held in the treasury of the Company.

(m) Whenever any provision of this Article 10 requires the Company to calculate the Closing Sale Prices, the Daily VWAPs, the Daily Conversion Values or the Daily Settlement Amounts over, or based on, a span of multiple days (including an Observation Period and the “Stock Price” for purposes of a Make-Whole Fundamental Change), the Company shall make appropriate adjustments to each to account for any adjustment to the Conversion Rate that becomes effective, or any event requiring an adjustment to the Conversion Rate where the Ex-Dividend Date of the event occurs, at any time during the period when the Closing Sale Prices, the Daily VWAPs, the Daily Conversion Values or the Daily Settlement Amounts are to be calculated. For the avoidance of doubt, the adjustments made pursuant to this Section 10.04(m) shall be made solely to the extent the Company determines in its good faith judgment that any such adjustment is necessary, without duplication of any adjustment made pursuant to this Section 10.04.

SECTION 10.05. Effect of Reclassifications, Business Combinations, Asset Sales and Corporate Events . If the Company:

(a) reclassifies or changes its Common Stock (other than changes in par value or from no par value resulting from a subdivision or combination); or

(b) consolidates or merges with or into or enters into a binding share exchange with any Person or sells, leases, transfers, conveys or otherwise disposes of all or substantially all of the property and assets of the Company and its Subsidiaries taken as a whole to another Person,

and, in either case, holders of Common Stock receive stock, other securities or other property or assets (including cash or any combination thereof) with respect to or in exchange for their Common Stock, then from and after the effective date of such transaction (a “ Merger Event ”), the right to convert each outstanding $1,000 principal amount of Notes based on the Common Stock shall, without the consent of any Holders, be changed into a right to convert each such Note based on the kind and amount of stock, other securities or other property or assets (including cash or any combination thereof) (the “ Reference Property ”). The Company or the successor or purchasing corporation, as the case may be, shall execute with the Trustee, without the consent of the Holders, a supplemental indenture providing that, at and after the Merger Event, the right to convert each outstanding $1,000 principal amount of Notes shall be changed into a right to convert such principal amount of Notes into the kind and amount of Reference Property that a holder of a number of shares of Common Stock equal to the Conversion Rate immediately prior to such Merger Event would have been entitled to receive upon such transaction. If the Merger Event causes the Common Stock to be converted into or exchanged for the right to receive more than a single type of consideration (determined based in part upon any form of stockholder election), the Reference Property into which the Notes shall become convertible shall be deemed to be based on the weighted average of the kind and amount of consideration actually received by holders of a majority of the Common Stock that voted for such an election (if electing between two types of consideration) or holders of a plurality of the

- 70 -

Common Stock that voted for such an election (if electing between more than two types of consideration), as the case may be, and if no holders of Common Stock affirmatively make such an election, the types and amounts of consideration actually received by the holders of Common Stock. In all cases the provisions under Section 10.02 shall continue to apply with respect to the calculation of the consideration due upon conversion, with the Daily Conversion Value, Daily Settlement Amount and the Daily VWAPs determined based on a unit of Reference Property that a holder of one share of the Common Stock would have received in such transaction; provided , however , that if the holders of the Common Stock receive only cash in such Merger Event, the consideration due upon conversion shall equal the Conversion Rate in effect on the Conversion Date, multiplied by the price paid per share of Common Stock in such transaction, and settlement of any conversion thereafter shall occur on the third Business Day following the applicable Conversion Date. The Company hereby agrees not to become a party to any such transaction unless its terms are consistent with the foregoing. Such supplemental indenture shall provide for adjustments which shall be as nearly equivalent as practicable to the adjustments provided for in this Article 10.

In connection with any adjustment to the conversion right pursuant to this Section 10.05, the Company shall also adjust the Dividend Threshold Amount based on the number of shares of common stock comprising the Reference Property and (if applicable) the value of any non-stock consideration comprising the Reference Property. If the Reference Property is composed solely of non-stock consideration, then the Dividend Threshold Amount shall be zero.

When the Company executes a supplemental indenture pursuant to this Section 10.05, the Company shall promptly file with the Trustee an Officer’s Certificate briefly stating the reasons therefor, the kind or amount of Reference Property after any such Merger Event, any adjustment to the Conversion Rate to be made with respect thereto and that all conditions precedent have been complied with, and shall promptly deliver or cause to be delivered notice thereof to all Holders. The Company shall cause notice of the execution of such supplemental indenture to be transmitted to each Holder, within 20 days after execution thereof. Failure to deliver any such notice shall not affect the legality or validity of such supplemental indenture.

The above provisions of this Section 10.05 shall similarly apply to successive reclassifications, changes, consolidations, mergers, binding share exchanges, sales, conveyances, transfers, leases or other dispositions.

(c) If this Section 10.05 applies to any event or occurrence, Section 10.04 shall not apply.

SECTION 10.06. Certain Covenants . (a) The Company shall, prior to the issuance of any Notes hereunder, and from time to time as may be necessary, reserve out of its authorized but unissued Common Stock or shares of Common Stock held in treasury, a sufficient number of shares of Common Stock, free of preemptive rights, to permit the conversion of the Notes.

(b) The Company covenants that all shares of Common Stock issued upon conversion of Notes shall be duly and validly issued and fully paid and non-assessable by the Company and free from all taxes, liens and charges with respect to the issue thereof.

- 71 -

(c) The Company shall endeavor promptly to comply with all federal and state securities laws regulating the issuance and delivery of shares of Common Stock upon the conversion of Notes, if any, and shall cause to have listed or quoted and shall keep listed or quoted all such shares of Common Stock on the Relevant Stock Exchange.

SECTION 10.07. [Reserved] .

SECTION 10.08. Shareholder Rights Plans . To the extent that any stockholders’ rights plan adopted by the Company is in effect upon conversion of the Notes, the Holders shall receive, in addition to any Common Stock due upon conversion, the rights under the applicable rights agreement unless the rights have separated from the Common Stock at the time of conversion of the Notes, in which case, the Conversion Rate shall be adjusted as if the Company distributed to all holders of the Common Stock shares of the Company’s Capital Stock, evidences of indebtedness or assets as provided in Section 10.04(c), subject to readjustment in the event of the expiration, termination or redemption of such rights.

SECTION 10.09. Responsibility of Trustee . The Trustee and any other Conversion Agent shall not at any time be under any duty or responsibility to any Holder to determine the Conversion Rate (or any adjustment thereto) or whether any facts exist that may require any adjustment (including any increase) of the Conversion Rate, or with respect to the nature or extent or calculation of any such adjustment when made, or with respect to the method employed, or herein or in any supplemental indenture provided to be employed, in making the same. The Trustee and any other Conversion Agent shall not be accountable with respect to the validity or value (or the kind or amount) of any shares of Common Stock, or of any securities, property or cash that may at any time be issued or delivered upon the conversion of any Note; and the Trustee and any other Conversion Agent make no representations with respect thereto. Neither the Trustee nor any Conversion Agent shall be responsible for any failure of the Company to issue, transfer or deliver any shares of Common Stock or stock certificates or other securities or property or cash upon the surrender of any Note for the purpose of conversion or to comply with any of the duties, responsibilities or covenants of the Company contained in this Article 10. Without limiting the generality of the foregoing, neither the Trustee nor any Conversion Agent shall be under any responsibility to determine the correctness of any provisions contained in any supplemental indenture entered into pursuant to Section 10.05 relating either to the kind or amount of shares of stock or securities or property (including cash) receivable by Holders upon the conversion of their Notes after any event referred to in such Section 10.05 or to any adjustment to be made with respect thereto, but, subject to the provisions of Section 9.01, may accept as conclusive evidence of the correctness of any such provisions, and shall be protected in relying upon, the Officer’s Certificate (which the Company shall be obligated to file with the Trustee prior to the execution of any such supplemental indenture) with respect thereto. Neither the Trustee nor the Conversion Agent shall be responsible for determining whether any event contemplated by Section 10.01 has occurred that makes the Notes eligible for conversion or no longer eligible therefor until the Company has delivered to the Trustee and the Conversion Agent the notices referred to in Section 10.01 with respect to the commencement or termination of such conversion rights, on which notices the Trustee and the Conversion Agent may conclusively rely, and the Company agrees to deliver such notices to the Trustee and the Conversion Agent immediately after the occurrence of any such event or at such other times as shall be provided for in Section 10.01.

- 72 -

SECTION 10.10. Exchange in Lieu of Conversion . (a) When a Holder surrenders Notes for conversion and the Conversion Date for such Notes occurs prior to September 15, 2023, the Company may, at its election, direct the Conversion Agent to surrender, on or prior to the second Business Day immediately following the relevant Conversion Date, such Notes to a financial institution designated by the Company (the “ Designated Institution ”) for exchange in lieu of conversion. In order to accept any Notes surrendered for conversion, the Designated Institution must agree to timely pay and/or deliver, as the case may be, in exchange for such Notes, all of the cash, shares of Common Stock or a combination thereof otherwise due upon conversion, all as set forth under Section 10.02. If the Company makes an exchange election, the Company shall, by the Close of Business on the second Business Day immediately following the relevant Conversion Date, notify the Holder surrendering Notes for conversion that the Company has directed the Designated Institution to make an exchange in lieu of conversion, and the Company shall notify the Designated Institution of the Settlement Method it has elected with respect to such conversion and the relevant deadline for delivery of the relevant conversion consideration.

(b) If the Designated Institution accepts any such Notes, it will pay and/or deliver, as the case may be, the cash, shares of Common Stock or a combination thereof due upon conversion to the Conversion Agent, and the Conversion Agent shall pay and/or deliver such cash and/or shares of Common Stock to such Holder on the third Business Day immediately following the relevant Conversion Date. Any Notes exchanged by the Designated Institution will remain outstanding. If the Designated Institution agrees to accept any Notes for exchange but does not timely pay and/or deliver the related cash, shares of Common Stock or a combination thereof, as the case may be, or if such Designated Institution does not accept the Notes for exchange, the Company shall convert the Notes and pay and/or deliver, as the case may be, the cash, shares of Common Stock or a combination thereof due upon conversion on the third Business Day immediately following the relevant Conversion Date as described under Section 10.02.

(c) For the avoidance of doubt, in no event will the Company’s designation of a Designated Institution pursuant to this Section 10.10 require the Designated Institution to accept any Notes.

ARTICLE 11

Miscellaneous

SECTION 11.01. Notices . Any notice or communication shall be in writing and delivered in person or mailed by first-class mail (registered or certified, return receipt requested), facsimile transmission, electronic transmission or other similar means of unsecured electronic communication or overnight air courier guaranteeing next day delivery, or to the other’s address, which initially is as follows:

if to the Company:

Teradyne, Inc.

600 Riverpark Drive

North Reading, Massachusetts 01864

Attention: General Counsel

- 73 -

if to the Trustee:

Wilmington Trust, National Association

1100 North Market Street

Wilmington, Delaware 19890

Attention: Teradyne, Inc. Administrator

The Company or the Trustee by notice to the other may designate additional or different addresses (including facsimile numbers and electronic addresses) for subsequent notices or communications.

Any notice or communication mailed to a Holder (or otherwise transmitted in accordance with the applicable procedures of the Depositary) shall be mailed or transmitted to the Holder at the Holder’s address as it appears on the Register of the Registrar and shall be sufficiently given if so mailed or transmitted within the time prescribed; provided that notices given to Holders of Global Notes may be given electronically through the facilities of the Depositary.

Failure to send a notice or communication to a Holder or any defect in it shall not affect its sufficiency with respect to other Holders. If a notice or communication is sent in the manner provided above, it is duly given, whether or not the addressee receives it; provided that notices to the Trustee, Conversion Agent or Bid Solicitation Agent are deemed given only upon actual receipt by the Trustee, Conversion Agent and Bid Solicitation Agent, as applicable.

In addition to the foregoing, the Trustee agrees to accept and act upon notice, instructions or directions pursuant to this Indenture sent by unsecured e-mail, facsimile transmission or other similar unsecured electronic methods. If the party elects to give the Trustee e-mail or facsimile instructions (or instructions by a similar electronic method) and the Trustee in its discretion elects to act upon such instructions, the Trustee’s understanding of such instructions shall be deemed controlling. The Trustee shall not be liable for any losses, costs or expenses arising directly or indirectly from the Trustee’s reliance upon and compliance with such instructions notwithstanding such instructions conflict or are inconsistent with a subsequent written instruction. The party providing electronic instructions agrees to assume all risks arising out of the use of such electronic methods to submit instructions and directions to the Trustee, including without limitation the risk of the Trustee acting on unauthorized instructions, and the risk or interception and misuse by third parties.

SECTION 11.02. No Optional Redemption . The Notes shall not be redeemable by the Company prior to the Maturity Date, and no sinking fund is provided for the Notes.

- 74 -

SECTION 11.03. Certificate and Opinion as to Conditions Precedent . Upon any request or application by the Company to the Trustee to take or refrain from taking any action under this Indenture, the Company shall furnish to the Trustee:

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

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

SECTION 11.04. Statements Required in Certificate or Opinion . Each certificate or opinion with respect to compliance with a covenant or condition provided for in this Indenture shall include:

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

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

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

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

SECTION 11.05. When Notes Disregarded . In determining whether the Holders of the required principal amount of Notes have concurred in any direction, modification, amendment waiver or consent of the terms of this Indenture, Notes owned by the Company or by any Person directly or indirectly controlling or controlled by or under direct or indirect common control with the Company shall be disregarded (from both the numerator and denominator) and deemed not to be outstanding, except that, for the purpose of determining whether the Trustee shall be protected in relying on any such direction, waiver or consent, only Notes which a Responsible Officer of the Trustee knows are so owned shall be so disregarded. Subject to the foregoing, only Notes outstanding at the time shall be considered in any such determination.

SECTION 11.06. Rules by Trustee, Paying Agent and Registrar . The Trustee may make reasonable rules for action by or a meeting of Holders. The Registrar and the Paying Agent may make reasonable rules for their functions.

SECTION 11.07. Withholding Taxes . Notwithstanding any other provision of this Indenture, if the Company or other applicable withholding agent determines, in its good faith discretion, that it is required by applicable law to pay, and pays, withholding taxes or backup withholding on behalf of the Holder or beneficial owner as a result of an adjustment to the Conversion Rate, the Company or other applicable withholding agent may, at its option, set off such payments against payments of cash and shares of Common Stock on the Note (or any payments on the Company’s Common Stock) or sales proceeds received by or other funds or assets of the Holder or beneficial owner.

- 75 -

SECTION 11.08. GOVERNING LAW . THIS INDENTURE AND THE NOTES, AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO THIS INDENTURE OR THE NOTES, SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

SECTION 11.09. No Recourse Against Others . No past, present or future director, officer, employee, incorporator, shareholder or partner, as such, of the Company shall have any liability for any obligations of the Company under the Notes or this Indenture or for any claim based on, or in respect of or by reason of, such obligations or their creation. By accepting a Note, each Holder shall waive and release all such liability. The waiver and release shall be part of the consideration for the issue of the Notes.

SECTION 11.10. Successors . All agreements of the Company in this Indenture and the Notes shall bind its successors. All agreements of the Trustee in this Indenture shall bind its successors.

SECTION 11.11. Multiple Originals . The parties may sign any number of copies of this Indenture. Each signed copy shall be an original, but all of them together represent the same agreement. One signed copy is enough to prove this Indenture. The exchange of copies of this Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Indenture as to the parties hereto and may be used in lieu of the original Indenture for all purposes.

SECTION 11.12. Table of Contents; Headings . The table of contents, cross-reference sheet and headings of the Articles and Sections of this Indenture have been inserted for convenience of reference only, are not intended to be considered a part hereof and shall not modify or restrict any of the terms or provisions hereof.

SECTION 11.13. Severability Clause . In case any provision in this Indenture 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 and such provision shall be ineffective only to the extent of such invalidity, illegality or unenforceability.

SECTION 11.14. Calculations . The Company shall be responsible for making all calculations called for under the Notes and for monitoring any Stock Price, Measurement Period or Observation Period. The calculations include, but are not limited to, determinations of the Closing Sale Price of the Common Stock, the VWAP of the Common Stock, accrued interest payable on the Notes, any Additional Interest due on the Notes, the Conversion Rate, the Conversion Price, the Daily Conversion Values and the Additional Shares. The Company or its agents shall make all these calculations in good faith and, absent manifest error, such calculations shall be final and binding on Holders. The Company shall provide a schedule of these calculations to each of the Trustee and the Conversion Agent, and each of the Trustee and Conversion Agent is entitled to rely upon the accuracy of the Company’s calculations without independent verification. The Trustee shall forward these calculations to any Holder upon the request of such Holder.

- 76 -

SECTION 11.15. Legal Holidays . If any Interest Payment Date, Fundamental Change Repurchase Date, Maturity Date or any other due date for a payment is not a Business Day, then any action to be taken on such date need not be taken on such date, but may be taken on the next succeeding Business Day with the same force and effect as if taken on such date, and no interest shall accrue in respect of the delay.

SECTION 11.16. Waiver of Jury Trial; Submission of Jurisdiction . EACH OF THE COMPANY, THE TRUSTEE AND EACH HOLDER (BY ITS ACCEPTANCE OF ANY NOTE) HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS INDENTURE, THE NOTES OR THE TRANSACTION CONTEMPLATED HEREBY. EACH OF THE COMPANY, THE TRUSTEE AND EACH HOLDER (BY ITS ACCEPTANCE OF ANY NOTE) HEREBY IRREVOCABLY SUBMITS TO THE JURISDICTION OF ANY STATE OR U.S. FEDERAL COURT IN THE CITY OF NEW YORK AND COUNTY OF NEW YORK IN RESPECT OF ANY SUIT, ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS INDENTURE AND THE NOTES, AND IRREVOCABLY ACCEPTS FOR ITSELF AND IN RESPECT OF ITS PROPERTY, GENERALLY AND UNCONDITIONALLY, JURISDICTION OF THE AFORESAID COURTS.

SECTION 11.17. U.S.A. Patriot Act . The parties hereto acknowledge that in accordance with Section 326 of the U.S.A. Patriot Act, the Trustee, like all financial institutions and in order to help fight the funding of terrorism and money laundering, is required to obtain, verify, and record information that identifies each person or legal entity that establishes a relationship or opens an account with the Trustee. The parties to this Indenture agree that they will provide the Trustee with such information as is required to satisfy the requirements of the U.S.A. Patriot Act.

- 77 -

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

EXHIBIT A

[FORM OF FACE OF NOTE]

[Global Note Legend]

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO TERADYNE, INC. OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO., OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

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

[Restricted Note Legend]

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

A-1

PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH CLAUSE (2)(D) ABOVE, THE COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. ¹ ]

A-2

No.         

1.25% Senior Convertible Note due 2023

CUSIP No.: [880770 AF9] ²

ISIN No.: [US880770AF97]

TERADYNE, INC., a corporation duly organized and validly existing under the laws of the State of Massachusetts (the “ Company,” which term includes any successor corporation or other entity under the Indenture referred to on the reverse hereof), for value received hereby promises to pay to CEDE & CO., or registered assigns, the principal amount [ Insert if a Global Note : as set forth in the “Schedule of Exchanges of Notes” attached hereto][ Insert if a certificated Note of $[        ]], on December 15, 2023 and interest thereon as set forth below.

This Note shall bear interest at the rate of 1.25% per year from December 12, 2016 or from the most recent date to which interest had been paid or provided for to, but excluding, the next scheduled Interest Payment Date until December 15, 2023, unless earlier converted or repurchased. Accrued interest on this Note shall be computed on the basis of a 360-day year composed of twelve 30-day months and, for a partial month, on the basis of the number of days actually elapsed in a 30-day month. Interest is payable semi-annually in arrears on each June 15 and December 15, commencing on June 15, 2017, to Holders of record at the Close of Business on the preceding June 1 and December 1 (whether or not such day is a Business Day), respectively. Additional Interest will be payable as set forth in Section 4.07(a), Section 4.07(b) and Section 6.12 of the within-mentioned Indenture, and any reference to interest on, or in respect of, any Note therein shall be deemed to include Additional Interest if, in such context, Additional Interest is, was or would be payable pursuant to any of such Section 4.07(a), Section 4.07(b) and Section 6.12 and any express mention of the payment of Additional Interest in any provision therein and herein shall not be construed as excluding Additional Interest in those provisions thereof and hereof where such express mention is not made.

Any Defaulted Interest shall accrue interest per annum at the rate borne by the Notes from, and including, the relevant payment date to, but excluding, the date on which such Defaulted Interest shall have been paid by the Company, at its election in accordance with Section 2.13 of the Indenture.

The Company shall pay the principal of and interest on this Note, so long as such Note is a Global Note, in immediately available funds to the Depositary or its nominee, as the case may be, as the registered Holder of such Note. As provided in and subject to the provisions of the Indenture, the Company shall pay the principal of any Notes (other than Notes that are Global Notes) upon presentation thereof at the office or agency designated by the Company for

A-3

that purpose. The Company has initially designated the Trustee as its Paying Agent and Registrar in respect of the Notes and its agency in New York, New York as a place where Notes may be presented for payment or for registration of transfer.

Reference is made to the further provisions of this Note set forth on the reverse hereof. Such further provisions shall for all purposes have the same effect as though fully set forth at this place.

This Note, and any claim, controversy or dispute arising under or related to this Note, shall be construed in accordance with and governed by the laws of the State of New York.

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

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

[ Remainder of page intentionally left blank ]

A-4

Dated:                     

A-5

[FORM OF REVERSE SIDE OF NOTE]

1.25% Senior Convertible Note due 2023

This Note is one of a duly authorized issue of Notes of the Company, designated as its 1.25% Convertible Senior Notes due 2023 (the “ Notes ”), limited to the aggregate principal amount of $[        ] all issued under and pursuant to an Indenture dated as of December 12, 2016 (the “ Indenture ”), between the Company and Wilmington Trust, National Association, as trustee (the “ Trustee ”), to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Trustee, the Conversion Agent, the Company and the Holders of the Notes. Additional Notes may be issued in an unlimited aggregate principal amount, subject to certain conditions specified in the Indenture. The Notes represent that aggregate principal amount of outstanding Notes from time to time endorsed hereon and the aggregate principal amount of outstanding Notes represented hereby may from time to time be increased or reduced to reflect purchases, cancellations, conversions or transfers permitted by the Indenture.

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

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

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

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

The Notes are issuable in registered form without coupons in denominations of $1,000 principal amount and integral multiples thereof. At the office or agency of the Company referred to on the face hereof, and in the manner and subject to the limitations provided in the Indenture, Notes may be exchanged for a like aggregate principal amount of Notes of other authorized denominations, without payment of any service charge but, if required by the Company or Trustee, with payment of a sum sufficient to cover any transfer or similar tax that may be imposed in connection therewith as a result of the name of the Holder of the new Notes issued upon such exchange of Notes being different from the name of the Holder of the old Notes surrendered for such exchange.

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

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

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

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

A-2

A-3

CONVERSION NOTICE

WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee

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

Dated:                     

A-4

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

Please print name and address

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

A-5

FUNDAMENTAL CHANGE REPURCHASE NOTICE

INC.WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee

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

Dated:                     

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

Notes Certificate Number (if applicable):                                         

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

Social Security or Other Taxpayer Identification Number:                                         

A-6

ASSIGNMENT

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

In connection with any transfer of the Notes prior to the first anniversary of the last date of the original issuance of the Notes, the undersigned confirms that such Notes are being transferred:

and unless the Notes are being transferred to Teradyne, Inc. or a subsidiary thereof, the undersigned confirms that such Notes are not being transferred to an “affiliate” of the Company as defined in Rule 144 under the Securities Act of 1933, as amended.

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

A-7

Dated:                     

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

A-8