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INDENTURE

Dated as of [●], 2023

among

OPTIWAVE SEMICONDUCTOR CORP., a Delaware corporation,

as the Company,

and

BROADMERE TRUST COMPANY, NATIONAL ASSOCIATION, a national banking association organized under the laws of the United States,

as Trustee, Registrar, Paying Agent, and Conversion Agent

_

2.75% Convertible Senior Notes due 2028

_

DRAFT — Calderwood & Harkness LLP — April 21, 2023 Privileged & Confidential — For Discussion Purposes Only

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RECITALS

WHEREAS, Optiwave Semiconductor Corp., a corporation duly organized and existing under the laws of the State of Delaware, with its principal executive offices at 4800 Great America Parkway, Suite 1200, San Jose, California 95054 (the "Company"), has duly authorized the creation and issuance of its 2.75% Convertible Senior Notes due 2028 (the "Notes") in an aggregate principal amount of up to $287,500,000, consisting of a base offering of $250,000,000 aggregate principal amount of Notes plus up to $37,500,000 aggregate principal amount of additional Notes issuable upon the exercise of the over-allotment option granted to the Initial Purchasers (as defined herein);

WHEREAS, the Notes are being offered and sold to qualified institutional buyers (as defined in Rule 144A under the Securities Act of 1933, as amended (the "Securities Act")) in reliance on the exemption from the registration requirements of the Securities Act provided by Rule 144A thereunder, and are not being registered under the Securities Act or any state securities laws;

WHEREAS, the Company has duly authorized the execution and delivery of this Indenture (as defined herein) and the issuance of the Notes hereunder;

WHEREAS, Broadmere Trust Company, National Association, a national banking association organized under the laws of the United States, with its Corporate Trust Office at 100 Wall Street, 6th Floor, New York, New York 10005 (the "Trustee"), has agreed to act as Trustee, Registrar, Paying Agent, and Conversion Agent under this Indenture upon the terms and conditions herein set forth; and

WHEREAS, all things necessary to make the Notes, when executed by the Company and authenticated and delivered by the Trustee hereunder and duly issued by the Company, the valid, binding, and legally enforceable obligations of the Company, and to make this Indenture a valid and binding agreement of the Company, in accordance with its terms, have been done.

NOW, THEREFORE, in consideration of the mutual agreements and obligations set forth herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Company and the Trustee hereby agree as follows for the equal and ratable benefit of the Holders of the Notes:

ARTICLE 1

DEFINITIONS AND INCORPORATION BY REFERENCE

Section 1.01 — Definitions

The following terms shall have the meanings ascribed to them below for all purposes of this Indenture. All other terms used in this Indenture that are defined in the Trust Indenture Act of 1939, as amended (the "TIA"), or by reference to the TIA in the Securities Act, have the meanings assigned to them therein.

"Additional Interest" means any additional interest payable on the Notes pursuant to Section 6.03 of this Indenture as a result of the Company's failure to comply with its reporting obligations under Section 10.03(b) of this Indenture.

"Additional Notes" means any additional Notes issued under Section 2.01 and Section 2.13 of this Indenture in connection with the exercise by the Initial Purchasers of the over-allotment option granted pursuant to the Purchase Agreement, in an aggregate principal amount of up to $37,500,000.

"Affiliate" of any specified Person means any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For purposes of this definition, "control" (including, with correlative meanings, the terms "controlling," "controlled by," and "under common control with"), as used with respect to any Person, means the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of such Person, whether through the ownership of voting securities, by agreement, or otherwise. For the avoidance of doubt, the determination of whether a Person is an "Affiliate" shall be consistent with the meaning ascribed to such term in Rule 144 under the Securities Act.

"Board of Directors" means the board of directors of the Company or any duly authorized committee thereof, including, without limitation, any pricing committee of the board of directors.

"Board Resolution" means a resolution duly adopted by the Board of Directors and in full force and effect at the time of determination, a copy of which has been certified by the Secretary or an Assistant Secretary of the Company and delivered to the Trustee.

"Business Day" means any day other than a Saturday, a Sunday, or a day on which banking institutions in The City of New York are authorized or required by law, regulation, or executive order to close.

"Capped Call Transactions" means the capped call transactions entered into by the Company with Ridgepoint Capital Markets LLC and Northvane Financial Products LP, in each case in connection with the offering of the Notes and on terms and conditions described in the Offering Memorandum. For the avoidance of doubt, this Indenture does not govern the Capped Call Transactions, and the Capped Call Transactions are separate transactions entered into by the Company with such counterparties and are not part of the terms of the Notes.

"Cash Settlement" has the meaning specified in Section 14.02(a).

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

"Closing Date" means [●], 2023.

"Closing Sale Price" of the Common Stock on any date means the closing sale price per share (or, if no closing sale price is reported, the average of the bid and ask prices or, if more than one in either case, the average of the average bid and the average ask prices) on that date as reported in composite transactions for the principal U.S. national or regional securities exchange on which the Common Stock is traded. If the Common Stock is not listed for trading on a U.S. national or regional securities exchange on the relevant date, the "Closing Sale Price" shall be the last quoted bid price for the Common Stock in the over-the-counter market on the relevant date as reported by Greaves Enterprises or a similar organization. If the Common Stock is not so quoted, the "Closing Sale Price" shall be the average of the mid-point of the last bid and ask prices for the Common Stock on the relevant date from each of at least three nationally recognized independent investment banking firms selected by the Company for this purpose.

"Commission" or "SEC" means the U.S. Securities and Exchange Commission.

"Common Stock" means the common stock of the Company, par value $0.001 per share, listed on The Nasdaq Global Select Market under the ticker symbol "OWS," or any shares of capital stock into which such Common Stock shall be reclassified or changed.

"Company" means Optiwave Semiconductor Corp., a Delaware corporation, and, subject to Article 11, its successors and assigns.

"Company Order" means a written request or order signed in the name of the Company by an Officer of the Company and delivered to the Trustee.

"Conversion Agent" means Broadmere Trust Company, National Association, acting in its capacity as conversion agent under this Indenture, or any successor conversion agent appointed by the Company in accordance with the terms of this Indenture.

"Conversion Date" has the meaning specified in Section 14.02.

"Conversion Obligation" has the meaning specified in Section 14.01.

"Conversion Price" means, as of any date, $1,000 divided by the Conversion Rate as of such date. The initial Conversion Price is approximately $94.50 per share of Common Stock (based on the initial Conversion Rate of 10.5820 shares of Common Stock per $1,000 principal amount of Notes).

"Conversion Rate" means, initially, 10.5820 shares of Common Stock per $1,000 principal amount of Notes, subject to adjustment as provided in Article 14 of this Indenture.

"Corporate Trust Office" means the office of the Trustee at which, at any particular time, its corporate trust business shall be principally administered, which office at the date of this Indenture is located at 100 Wall Street, 6th Floor, New York, New York 10005.

"CUSIP" means 683742AA5 (or any successor CUSIP number assigned to the Notes).

"Daily Conversion Value" has the meaning specified in Section 14.02(a).

"Daily Settlement Amount" has the meaning specified in Section 14.02(a).

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

"Default" means any event that is, or with the passage of time or the giving of notice or both would be, an Event of Default as defined in Section 6.01.

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

"Depositary" or "DTC" means The Depository Trust Company, its nominees, and their respective successors.

"Effective Date" has the meaning specified in Section 14.04, as applicable to the relevant anti-dilution adjustment or Make-Whole Fundamental Change.

"Event of Default" has the meaning specified in Section 6.01.

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

"Ex-Dividend Date" means the first date on which 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 the Common Stock on such exchange or market (in the form of due bills or otherwise) as determined by such exchange or market.

"Free Conversion Date" means March 1, 2028.

"Fundamental Change" has the meaning specified in Section 15.01.

"Fundamental Change Company Notice" has the meaning specified in Section 15.02(b).

"Fundamental Change Repurchase Date" has the meaning specified in Section 15.02(b).

"Fundamental Change Repurchase Notice" has the meaning specified in Section 15.02(c).

"Fundamental Change Repurchase Price" has the meaning specified in Section 15.02(a).

"Global Note" means a Note in the form of a global note registered in the name of the Depositary or its nominee, substantially in the form set forth in Exhibit A hereto, issued in accordance with Section 2.01.

"Holder" means, with respect to any Note, the Person in whose name such Note is registered on the books of the Registrar.

"Indenture" means this Indenture, as originally executed, and as it may from time to time be supplemented or amended by one or more supplemental indentures entered into pursuant to the applicable provisions hereof.

"Initial Purchasers" means Ridgepoint Capital Markets LLC, Harborstone Securities Inc., and Velthorn Zanthor & Co., collectively, and their respective successors and assigns.

"Interest Payment Date" means June 1 and December 1 of each year, commencing December 1, 2023.

"ISIN" means US683742AA53 (or any successor ISIN assigned to the Notes).

"Last Reported Sale Price" of the Common Stock on any date means the closing sale price per share (or, if no closing sale price is reported, the average of the bid and ask prices or, if more than one in either case, the average of the average bid and the average ask prices) on that date as reported in composite transactions for The Nasdaq Global Select Market or, if the Common Stock is not listed on The Nasdaq Global Select Market on such date, as reported in composite transactions for the principal U.S. national or regional securities exchange on which the Common Stock is then listed. If the Common Stock is not listed for trading on a U.S. national or regional securities exchange on the relevant date, the "Last Reported Sale Price" shall be determined in the manner set forth in the definition of "Closing Sale Price."

"Make-Whole Fundamental Change" has the meaning specified in Section 14.03 and Section 15.03.

"Market Disruption Event" has the meaning specified in Section 14.01(c).

"Maturity Date" means June 1, 2028, unless earlier redeemed, repurchased, or converted.

"Net Share Settlement" has the meaning specified in Section 14.02(a).

"Note" or "Notes" means the Company's 2.75% Convertible Senior Notes due 2028 issued under this Indenture and authenticated by the Trustee.

"Observation Period" has the meaning specified in Section 14.02.

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

"Officers' Certificate" means a certificate signed by two Officers of the Company, one of whom must be the principal executive officer, the principal financial officer, or the principal accounting officer of the Company, and delivered to the Trustee. Each such certificate shall include the statements provided for in Section 314(e) of the TIA, if applicable.

"Offering Memorandum" means the offering memorandum dated May 23, 2023, relating to the offering and sale of the Notes.

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

"Opinion of Counsel" means a written opinion of legal counsel (who may be counsel to the Company) that is reasonably acceptable to the Trustee.

"Optional Redemption" has the meaning specified in Article 16.

"Optional Redemption Date" has the meaning specified in Section 16.01.

"Optional Redemption Price" has the meaning specified in Section 16.01(c).

"Paying Agent" means Broadmere Trust Company, National Association, acting in its capacity as paying agent under this Indenture, or any successor paying agent appointed by the Company in accordance with the terms of this Indenture.

"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 specified in Section 14.02(a).

"Pricing Date" means May 23, 2023.

"Purchase Agreement" means the Purchase Agreement, dated May 23, 2023, among the Company and the Initial Purchasers, relating to the offer and sale of the Notes.

"QIB" means a "qualified institutional buyer" as defined in Rule 144A.

"Record Date" means, with respect to any Interest Payment Date, May 15 or November 15 (whether or not such day is a Business Day) immediately preceding the relevant Interest Payment Date.

"Redemption Notice" has the meaning specified in Section 16.02.

"Reference Price" means $73.38 per share, representing the Closing Sale Price of the Common Stock on The Nasdaq Global Select Market on the Pricing Date.

"Register" means the register of Holders maintained by the Registrar pursuant to Section 2.03.

"Registrar" means Broadmere Trust Company, National Association, acting in its capacity as registrar under this Indenture, or any successor registrar appointed by the Company in accordance with the terms of this Indenture.

"Relevant Stock Exchange" means The Nasdaq Global Select Market or, if the Common Stock is not then listed on The Nasdaq Global Select Market, the principal other U.S. national or regional securities exchange on which the Common Stock is then listed, or any successor exchange thereto.

"Required Holders" means Holders of at least 25% in aggregate principal amount of the Notes then outstanding.

"Rule 144" means Rule 144 under the Securities Act (or any successor rule thereto).

"Rule 144A" means Rule 144A under the Securities Act (or any successor rule thereto).

"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 listed on any U.S. national or regional securities exchange, "Scheduled Trading Day" means a Business Day.

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

"Settlement Method" has the meaning specified in Section 14.02(a).

"Significant Subsidiary" means, with respect to the Company, any Subsidiary of the Company that would constitute a "significant subsidiary" as defined in Rule 1-02 of Regulation S-X promulgated by the SEC (as such regulation is in effect on the date of this Indenture), substituting "5%" for "10%" wherever "10%" appears therein.

"Spin-Off" has the meaning specified in Section 14.04(c).

"Stock Price" means, with respect to any Make-Whole Fundamental Change, the consideration paid or payable per share of Common Stock in such transaction. If holders of Common Stock receive only cash in such transaction, the Stock Price shall equal the cash amount paid per share. In all other cases, the Stock Price shall equal the average of the Last Reported Sale Prices of the Common Stock over the five consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the Effective Date of the Make-Whole Fundamental Change.

"Subsidiary" means, with respect to any Person, any corporation, association, partnership, limited liability company, or other business entity of which more than 50% of the total voting power of shares of capital stock or other interests (including partnership and limited liability company interests) entitled (without regard to the occurrence of any contingency) to vote in the election of directors, managers, general partners, or trustees thereof, as applicable, 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 11.01.

"TIA" means the Trust Indenture Act of 1939 (15 U.S.C. §§ 77aaa–77bbbb), as amended and in effect on the date of this Indenture.

"Trading Day" means a day on which (i) trading in the Common Stock (or other security for which a Daily VWAP, Last Reported Sale Price, or Closing Sale Price must be determined) generally occurs on The Nasdaq Global Select Market or, if the Common Stock (or such other security) is not then listed on The Nasdaq Global Select Market, on the principal other U.S. national or regional securities exchange on which the Common Stock (or such other security) is then listed, and (ii) a Last Reported Sale Price for the Common Stock (or such other security) is available on such exchange. If the Common Stock (or such other security) is not so listed, "Trading Day" means a Business Day.

"Transfer Agent" means Clearwater Transfer Services Inc., or any successor transfer agent for the Common Stock.

"Trustee" means Broadmere Trust Company, National Association, a national banking association organized under the laws of the United States, until a successor replaces it pursuant to the applicable provisions of this Indenture and, thereafter, means the successor serving hereunder.

Section 1.02 — Other Definitions

The following terms are defined in the Sections of this Indenture set forth opposite such terms:

Section 1.03 — Incorporation by Reference of Trust Indenture Act

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

(a) "Commission" means the SEC;

(b) "indenture securities" means the Notes;

(c) "indenture security holder" means a Holder;

(d) "indenture to be qualified" means this Indenture;

(e) "indenture trustee" or "institutional trustee" means the Trustee; and

(f) "obligor" on the indenture securities means the Company and any other obligor on the Notes.

All other terms used in this Indenture that are defined by the TIA, defined by reference to the TIA in the Securities Act, or defined by SEC rules under the TIA have the meanings so assigned to them therein. Notwithstanding the foregoing, this Indenture is not required to be and is not qualified under the TIA as of the date hereof. In the event that this Indenture or the Notes become subject to the TIA at any time after the date hereof, the provisions of the TIA that are required to be part of, and to govern, indentures qualified under the TIA shall be deemed incorporated by reference herein and shall supersede any inconsistent provision of this Indenture to the extent of such inconsistency.

Section 1.04 — Rules of Construction

Unless the context otherwise requires:

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

(b) an accounting term not otherwise defined has the meaning assigned to it in accordance with U.S. generally accepted accounting principles as in effect from time to time;

(c) "or" is not exclusive;

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

(e) "including" means "including, without limitation";

(f) "will" shall be interpreted to express a command;

(g) provisions apply to successive events and transactions;

(h) references to sections of, or rules under, the Securities Act or the Exchange Act shall be deemed to include substitute, replacement, or successor sections or rules adopted by the SEC from time to time;

(i) unless otherwise indicated, all references to "Sections" or "Articles" refer to the corresponding Sections or Articles of this Indenture;

(j) references to "$" or "dollars" mean United States dollars;

(k) headings of the Articles and Sections of this Indenture and the Table of Contents have been inserted for convenience of reference only, are not to be considered a part of this Indenture, and shall in no way modify or restrict any of the terms or provisions hereof;

(l) references to any agreement or contract are to that agreement or contract as amended, modified, restated, or supplemented from time to time in accordance with the terms thereof; and

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

ARTICLE 2

THE NOTES

Section 2.01 — Form, Dating, and Denominations

(a) The Notes and the Trustee's certificate of authentication shall be substantially in the form of Exhibit A hereto. The Notes may have notations, legends, or endorsements required by law, securities exchange rule, or usage. Each Note shall be dated the date of its authentication.

(b) The Notes shall be issued in fully registered form only, without coupons, in minimum denominations of $1,000 principal amount and integral multiples of $1,000 in excess thereof.

(c) The Notes shall initially be issued in the form of one or more Global Notes, registered in the name of Cede & Co. (as nominee of DTC) and deposited with the Trustee, as custodian for DTC. DTC Participant Number for Broadmere Trust Company, National Association is 2174. Each Global Note shall represent such aggregate principal amount of Notes as shall be specified therein and shall provide that it represents the aggregate principal amount of outstanding Notes from time to time endorsed thereon and that the aggregate principal amount of outstanding Notes represented thereby may from time to time be reduced or increased, as appropriate, to reflect exchanges and redemptions. Any endorsement of a Global Note to reflect the amount of any increase or decrease in the aggregate principal amount of outstanding Notes represented thereby shall be made by the Trustee, in accordance with the instructions given by the Holder thereof as required by Section 2.06 hereof.

(d) The CUSIP number assigned to the Notes is 683742AA5 and the ISIN assigned to the Notes is US683742AA53.

(e) The aggregate principal amount of Notes that may be authenticated and delivered under this Indenture is limited to $287,500,000, consisting of an initial issuance of $250,000,000 aggregate principal amount of Notes on the Closing Date, plus up to $37,500,000 aggregate principal amount of Additional Notes issuable upon exercise of the over-allotment option granted to the Initial Purchasers in the Purchase Agreement.

Section 2.02 — Execution, Authentication, and Delivery

(a) The Notes shall be executed on behalf of the Company by manual or facsimile signature of one or more Officers of the Company authorized by the Board of Directors to sign the Notes. The signature of any such Officer on the Notes may be manual or facsimile. Notes bearing the manual or facsimile signature of individuals who were, at the time of execution, authorized Officers of the Company shall bind the Company, notwithstanding that such individuals or any of them have ceased to hold such offices prior to the authentication and delivery of such Notes or did not hold such offices at the date of such Notes.

(b) No Note shall be entitled to any benefit under this Indenture or be valid or obligatory for any purpose unless and until authenticated substantially in the form set forth in Exhibit A hereto by the manual or electronic signature of a duly authorized signatory of the Trustee. The Trustee's certificate of authentication on any Note shall be conclusive evidence, and the only evidence, that such Note has been duly authenticated and delivered hereunder. The Trustee shall, upon receipt of a Company Order and an Officers' Certificate and an Opinion of Counsel, authenticate and deliver the Notes.

(c) On the Closing Date, the Trustee shall authenticate and deliver the initial $250,000,000 aggregate principal amount of Notes upon the Company Order. Thereafter, the Trustee shall authenticate and deliver Additional Notes (up to an aggregate principal amount of $37,500,000) upon the Company Order evidencing the exercise of the over-allotment option, together with an Officers' Certificate and an Opinion of Counsel, in each case in form and substance reasonably satisfactory to the Trustee.

Section 2.03 — Registrar and Paying Agent

(a) The Company shall maintain (i) an office or agency where Notes may be presented for payment (the "Paying Agent"), (ii) an office or agency where Notes may be presented for conversion (the "Conversion Agent"), and (iii) an office or agency where Notes may be presented for registration of transfer or for exchange (the "Registrar"). The Registrar shall keep the Register of the Notes and of their transfer and exchange. The Company may appoint one or more additional paying agents, conversion agents, or registrars and may terminate the appointment of any paying agent, conversion agent, or registrar. The Company may act as its own Paying Agent, Conversion Agent, or Registrar.

(b) The Company hereby initially appoints Broadmere Trust Company, National Association, as Registrar, Paying Agent, and Conversion Agent. The Corporate Trust Office of the Trustee at 100 Wall Street, 6th Floor, New York, New York 10005 shall serve as the initial office or agency of the Company for each such purpose.

(c) The Company shall give prompt written notice to the Trustee of any change in the office or agency of the Registrar, Paying Agent, or Conversion Agent and of the appointment of any additional registrar, paying agent, or conversion agent, and shall provide notice to the Holders of any change in the location of the office or agency of the Paying Agent or the Conversion Agent.

Section 2.04 — Paying Agent to Hold Money in Trust

(a) The Company shall require each Paying Agent (other than the Trustee) to agree in writing that such Paying Agent will hold in trust, for the benefit of the Holders of the Notes or the Trustee, all sums held by such Paying Agent for the payment of principal of or interest on the Notes (or the Fundamental Change Repurchase Price or the Optional Redemption Price, as applicable), and will notify the Trustee promptly in writing of any Default by the Company in making any such payment. While any such Default continues, the Trustee may require a Paying Agent to pay all money held by it to the Trustee.

(b) If the Company acts as its own Paying Agent, it shall, on or before each date on which any principal, interest, Fundamental Change Repurchase Price, or Optional Redemption Price is due and payable, segregate and hold in a separate trust fund for the benefit of the Holders a sum sufficient to pay such amount until such sums shall be paid to such Persons or otherwise disposed of as herein provided. The Company shall promptly notify the Trustee of any failure by the Company so to act.

(c) Anything in this Indenture to the contrary notwithstanding, if any money deposited with the Trustee or any Paying Agent, or then held by the Company, in trust for the payment of principal of or interest on any Note and remaining unclaimed for two years after such principal, interest, or other sum has become due and payable, shall be paid to the Company upon Company Order, or (if then held by the Company) shall be discharged from such trust. After such payment to the Company, the Holder of such Note shall, as an unsecured general creditor, look only to the Company for payment thereof, and all liability of the Trustee or such Paying Agent with respect to such trust money, and all liability of the Company as trustee thereof, shall thereupon cease; provided, however, that the Trustee or such Paying Agent, before being required to make any such repayment, may at the expense of the Company cause to be published once, in a newspaper published in the English language, customarily published on each Business Day, and of general circulation in The City of New York, notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such notification or publication, any unclaimed balance of such money then remaining will be repaid to the Company.

Section 2.05 — 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 all Holders. If the Trustee is not the Registrar, the Company shall furnish to the Trustee, in writing and in such form as the Trustee may reasonably require, (a) semi-annually, no later than each Record Date, and (b) at such other times as the Trustee may request in writing, a list in such form and as of such date as the Trustee may reasonably require of the names and addresses of all Holders.

Section 2.06 — Transfer and Exchange

(a) General. When a Note is presented to the Registrar with a request to register the transfer of such Note or to exchange such Note for an equal principal amount of Notes of other authorized denominations, the Registrar shall register the transfer or make the exchange as requested if the requirements for such transactions set forth in this Indenture and in the Notes are satisfied. To permit registrations of transfer and exchanges, the Company shall execute and the Trustee shall authenticate Notes at the Registrar's request. No service charge shall be made to a Holder for any registration of transfer or exchange (except as otherwise expressly permitted herein), but the Company may require payment of a sum sufficient to cover any transfer tax or similar governmental charge payable in connection therewith.

(b) Transfer Restrictions. The Notes have not been registered under the Securities Act and may not be offered, sold, pledged, or otherwise transferred except (i) to the Company or any of its Subsidiaries, (ii) to a Person the transferor reasonably believes is a QIB in a transaction meeting the requirements of Rule 144A, (iii) pursuant to another applicable exemption from the registration requirements of the Securities Act, or (iv) pursuant to an effective registration statement under the Securities Act, in each case in accordance with any applicable securities laws of any state of the United States.

(c) Restricted Notes Legend. Each Global Note and each certificated Note (if any) shall bear a restrictive legend substantially as set forth in Exhibit A hereto (the "Restricted Notes Legend"). The Restricted Notes Legend shall not be removed from any Note unless there is delivered to the Company and the Registrar such satisfactory evidence (which may include an Opinion of Counsel) as may reasonably be required by the Company that neither the legend nor the restrictions on transfer set forth therein are required to ensure that transfers thereof comply with the provisions of Rule 144A or Rule 144 under the Securities Act, or that the Notes are not "restricted securities" within the meaning of Rule 144. Upon provision of such satisfactory evidence, the Trustee, at the written direction of the Company, shall authenticate and deliver in exchange for such Note a new Note of like tenor and aggregate principal amount that does not bear such legend.

(d) Certification Requirements. A transferor of a Note shall provide to the Registrar a written certification (in the form set forth in the Notes or in such other form as may be acceptable to the Company and the Registrar) that such transfer is being made (i) to a Person whom the transferor reasonably believes is a QIB within the meaning of Rule 144A in a transaction meeting the requirements of Rule 144A, or (ii) pursuant to another applicable exemption from registration under the Securities Act.

(e) Global Notes. Transfers of interests in Global Notes shall be made only through the book-entry system of DTC, in accordance with DTC's procedures, and the provisions of this Section 2.06.

Section 2.07 — Replacement Notes

If any mutilated Note is surrendered to the Trustee, or if the Holder of a Note 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 Trustee's and the Company's requirements are met. If required by the Trustee or the Company, an indemnity bond or other security must be posted that is sufficient in the judgment of both the Trustee and the Company to protect the Company, the Trustee, any Paying Agent, any Registrar, and any Conversion Agent from any loss that any of them may suffer if a Note is replaced. The Company and the Trustee may charge for their expenses in replacing a Note, including reasonable fees of counsel.

Every replacement Note is an additional obligation of the Company and shall be entitled to all of the benefits of this Indenture equally and proportionately with all other Notes duly issued hereunder.

Section 2.08 — Outstanding Notes

The Notes outstanding at any time are all the Notes that have been authenticated by the Trustee except for those cancelled by it, those delivered to it for cancellation, those reductions in the interest of a Global Note effected in accordance with the provisions hereof, and those described in this Section as not outstanding. Except as set forth in Section 2.09, 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 2.07, it ceases to be outstanding unless the Trustee receives proof satisfactory to it that the replaced Note is held by a bona fide purchaser.

If the Paying Agent (other than the Company) holds, on a Redemption Date or a Maturity Date or a Fundamental Change Repurchase Date, money or securities sufficient to pay Notes payable on that date, then on and after that date such Notes shall be deemed to be no longer outstanding and shall cease to accrue interest.

Section 2.09 — Treasury Notes

In determining whether the Holders of the required principal amount of Notes have concurred in any direction, waiver, or consent, 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 considered as though not outstanding, except that, for purposes of determining whether the Trustee shall be protected in relying on any such direction, waiver, or consent, only Notes that a Responsible Officer of the Trustee actually knows are so owned shall be so disregarded.

Section 2.10 — Temporary Notes

Until certificated Notes are ready for delivery, the Company may prepare and the Trustee shall authenticate temporary Notes. Temporary Notes shall be substantially in the form of certificated Notes but may have variations that the Company considers appropriate for temporary Notes. Without unreasonable delay, the Company shall prepare and the Trustee shall authenticate certificated Notes in exchange for temporary Notes, without charge to any Holder.

Section 2.11 — Cancellation

The Company at any time may deliver Notes to the Trustee for cancellation. The Registrar and the Paying Agent shall forward to the Trustee any Notes surrendered to them for registration of transfer, exchange, payment, conversion, or repurchase. The Trustee shall cancel all Notes surrendered for registration of transfer, exchange, payment, conversion, redemption, or repurchase and shall dispose of cancelled Notes in accordance with its customary procedures. The Company may not issue new Notes to replace Notes that it has paid or that have been delivered to the Trustee for cancellation.

Section 2.12 — CUSIP and ISIN Numbers

The Company in issuing the Notes may use "CUSIP" numbers and "ISIN" numbers (if then in general use), and, if so, the Trustee shall use such numbers in notices to Holders 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 redemption, repurchase, or conversion and that reliance may be placed only on the other identification numbers printed on the Notes. The Company shall promptly notify the Trustee in writing of any change in the CUSIP or ISIN numbers.

Section 2.13 — Additional Notes

The Company may, from time to time prior to the expiration of the over-allotment option period, without the consent of Holders, issue Additional Notes under this Indenture in an aggregate principal amount not to exceed $37,500,000 in connection with the exercise of the over-allotment option granted to the Initial Purchasers pursuant to the Purchase Agreement. Any Additional Notes so issued shall have the same terms and conditions in all respects as the Notes initially issued on the Closing Date (except for the issue date, issue price, and first Interest Payment Date, if applicable) and shall form a single series with the Notes initially issued on the Closing Date for all purposes under this Indenture, including, without limitation, waivers, amendments, redemptions, repurchases, conversions, and offers to purchase. Additional Notes shall be authenticated by the Trustee upon receipt of a Company Order and an Officers' Certificate and an Opinion of Counsel, in each case in form and substance reasonably satisfactory to the Trustee.

ARTICLE 3

INTEREST

Section 3.01 — Interest Rate and Payment Dates

(a) The Notes shall bear interest at the rate of 2.75% per annum (the "Interest Rate"). Interest on the Notes shall accrue from June 1, 2023 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, and shall be payable semi-annually in arrears on each Interest Payment Date, commencing December 1, 2023, to the Holders of record at the Close of Business on the immediately preceding Record Date.

(b) Interest on the Notes shall be computed on the basis of a 360-day year consisting of twelve 30-day months. Interest shall accrue and be payable until the principal of the Notes is paid, converted, redeemed, or repurchased, as provided herein.

(c) Interest shall cease to accrue on a Note upon its maturity, redemption, repurchase, or conversion unless the Company defaults in the payment of the Maturity Date principal amount, the Optional Redemption Price, or the Fundamental Change Repurchase Price, as the case may be, in which case interest shall continue to accrue (including during any grace period applicable thereto) on the overdue amount at the rate set forth in Section 3.03 from the required payment date until the actual payment date.

Section 3.02 — Record Dates

The regular Record Dates for the payment of interest on the Notes shall be May 15 and November 15 (whether or not a Business Day) immediately preceding the relevant Interest Payment Date. Interest shall be payable to the Person in whose name a Note (or one or more predecessor Notes) is registered at the Close of Business on the applicable Record Date.

Section 3.03 — Interest on Overdue Amounts

Any Defaulted Amounts shall bear interest at the Interest Rate of 2.75% per annum (computed on the basis of a 360-day year consisting of twelve 30-day months) from, and including, the relevant payment date to, but excluding, the date on which such Defaulted Amounts are paid. Interest on Defaulted Amounts shall be payable on demand.

Section 3.04 — Payment of Interest at Maturity and Other Dates

If the Maturity Date, any Optional Redemption Date, or any Fundamental Change Repurchase Date falls on a day that is not a Business Day, the required payment of principal, the Optional Redemption Price, or the Fundamental Change Repurchase Price, as the case may be (together with any accrued and unpaid interest), shall be made on the next succeeding Business Day, and no additional interest shall accrue as a result of such delay in payment.

ARTICLE 4

SATISFACTION AND DISCHARGE

Section 4.01 — Satisfaction and Discharge

This Indenture shall be discharged and shall cease to be of further effect as to all Notes issued hereunder when:

(a) either:

(i) all Notes that have been authenticated (except lost, stolen, or destroyed Notes that have been replaced or paid and Notes for whose payment money has been deposited in trust and thereafter repaid to the Company, as provided herein) have been delivered to the Trustee for cancellation; or

(ii) all Notes that have not been delivered to the Trustee for cancellation have become due and payable by reason of the making of a notice of redemption or otherwise, or will become due and payable within one year, and the Company has irrevocably deposited or caused to be deposited with the Trustee as trust funds in trust solely for the benefit of the Holders, cash in U.S. dollars, in an amount sufficient, without consideration of any reinvestment of such funds, to pay and discharge the entire indebtedness on such Notes not delivered to the Trustee for cancellation for principal, accrued and unpaid interest, and any Fundamental Change Repurchase Price or Optional Redemption Price, as applicable, to the date of deposit or to the Maturity Date, the Fundamental Change Repurchase Date, or the Optional Redemption Date, as applicable;