TRANSOCEAN INC., as Issuer TRANSOCEAN LTD. TRANSOCEAN MID HOLDINGS 1 LIMITED TRANSOCEAN MID HOLDINGS 2 LIMITED TRANSOCEAN MID HOLDINGS 3 LIMITED, as Guarantors and WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee INDENTURE Dated as of September 11, 2020

INDENTURE dated as of September 11, 2020, among TRANSOCEAN INC., a Cayman Islands exempted company (the “Company”), TRANSOCEAN LTD., a company organized under the laws of Switzerland (the “Parent”), the Subsidiary Guarantors (as defined herein), and WELLS FARGO BANK, NATIONAL ASSOCIATION, as trustee (the “Trustee”).

RECITALS

The Company has duly authorized the issuance of US$687,343,000 aggregate principal amount of 11.50% Senior Guaranteed Notes due 2027, and to provide therefor the Company has duly authorized the execution and delivery of this Indenture.

All things necessary to make the Securities (as defined below), when executed by the Company, authenticated and delivered hereunder and duly issued by the Company, the valid and binding obligations of the Company, and to make this Indenture a valid and legally binding agreement of the Company and the Guarantors, in accordance with its terms, have been done.

NOW, THEREFORE, THIS INDENTURE WITNESSETH:

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

Article 1
Definitions and Incorporation by Reference

SECTION 1.01.Definitions

“Additional Securities” means Securities issued under this Indenture after the Issue Date and in compliance with Sections 2.13 and 4.04, it being understood that any Securities issued in exchange for or in replacement of any Securities issued on the Issue Date shall not be Additional Securities.

“Affiliate” means, with respect to a specified Person, another Person that directly, or indirectly through one or more intermediaries, Controls or is Controlled by or is under common Control with the Person.

“Aggregate Debt” means the sum of the following as of the date of determination: (1) the then outstanding aggregate principal amount of the Indebtedness of the Company and its Subsidiaries secured by Liens not permitted by clauses (1) through (10) of Section 4.03; (2) the then outstanding aggregate principal amount of all Indebtedness of the Subsidiaries of the Company not permitted by clauses (1) through (11) or (13) of Section 4.04 without double counting in this clause (2) to the extent that such Indebtedness is included in clause (1) or (3) of this definition; and (3) the then existing Attributable Liens of the Company and its Subsidiaries in respect of sale and lease-back transactions without double counting to the extent that the Indebtedness relating thereto is included in clause (1) or (2) of this definition. For the avoidance of doubt, for purposes of clause (1) of this definition, “Aggregate Debt” shall not include any Indebtedness secured by a Lien to the extent the Securities are equally and ratably secured by such Lien.

“Applicable Premium” as calculated by the Company and set forth in an Officer’s Certificate delivered to the Trustee, means, at any redemption date, the greater of (A) 1.00% of the principal amount of such Security and (B) the excess of (1) the present value at such redemption date of (a) the redemption price of such Security on July 30, 2023 (such redemption price being set forth in the table appearing in Section 3.08(a)(3) exclusive of any accrued interest plus (b) all required remaining scheduled interest payments due on such Security through July 30, 2023 (but excluding accrued and unpaid interest to the redemption date), computed using a discount rate equal to the Treasury Rate plus 50 basis points, over (2) the principal amount of such Security on such redemption date.

“Applicable Procedures” means, with respect to any transfer, redemption or exchange of or for beneficial interests in any Global Security, the rules and procedures of the Depositary that apply to such transfer, redemption or exchange.

“Attributable Liens” means in connection with a sale and lease-back transaction the lesser of: (1) the fair market value of the assets subject to such transaction, as determined in good faith by the Parent’s board of directors; and (2) the present value (discounted at the rate of interest implicit in such transaction) of the obligations of the lessee for rental payments during the shorter of the term of the related lease or the period through the first date on which the lessee may terminate the lease or, if such sale and lease-back transaction results in a Capital Lease, the outstanding amount of such Capital Lease as determined in accordance with GAAP.

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

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

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

“Capital Lease” means any lease obligation of a Person incurred with respect to real property or equipment acquired or leased by such Person and used in its business that is required to be recorded as a capital lease in accordance with GAAP.

“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.

“Change of Control” means the occurrence of any of the following:

(1)the sale, lease, transfer, conveyance or other disposition (other than by way of merger, amalgamation or statutory plan of arrangement or consolidation), in one or a series of related transactions, of all or substantially all of the assets of the Company and its Subsidiaries taken as a whole to any “person” or “group” (as such terms are used in Sections 13(d) and 14(d) of the Exchange Act) other than to the Company or one of its Subsidiaries;

(2)the consummation of any transaction (including, without limitation, any merger, amalgamation or statutory plan of arrangement or consolidation) the result of which is that any “person” or “group” (as such terms are used in Sections 13(d) and 14(d) of the Exchange Act) becomes the beneficial owner (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, of more than 50% of the combined voting power of the Company’s Voting Stock or other Voting Stock into which the Company’s Voting Stock is reclassified, consolidated, exchanged or changed, measured by voting power rather than number of shares;

(3)the Company consolidates, amalgamates, or enters into a statutory plan of arrangement with, or merges with or into, any “person” (as that term is used in Section 13(d)(3) of the Exchange Act), or any person consolidates, amalgamates, or enters into a statutory plan of arrangement with, or merges with or into, the Company, in any such event pursuant to a transaction in which any outstanding Voting Stock of the Company or of such other person is converted into or exchanged for cash, securities or other property, other than any such transaction where the shares of the Company’s Voting Stock outstanding immediately prior to such transaction constitute, or are converted into or exchanged for, Voting Stock representing more than 50% of the combined voting power of the surviving person immediately after giving effect to such transaction; or

(4)the adoption of a plan relating to the Company’s liquidation or dissolution.

Notwithstanding the foregoing, any holding company whose only significant asset is Capital Stock of the Company or any of the Company’s direct or indirect parent companies shall not itself be considered a “person” or “group” for purposes of clause (2) above.

“Change of Control Payment” means, with respect to Securities tendered pursuant to a Change of Control Offer, an amount equal to 101% of the aggregate principal amount of the Securities repurchased plus accrued and unpaid interest thereon, if any, to, but not including the date of repurchase.

“Change of Control Repurchase Event” means on any date during the 60-day period (which period shall be extended so long as the rating of the Securities is under publicly announced consideration for a possible downgrade by any of the Rating Agencies) after the earlier of (1) the occurrence of a Change of Control; or (2) public notice of the occurrence of a Change of Control or the intention by the Company to effect a Change of Control, (i) in the event the Securities are rated Investment Grade by at least two of the Rating Agencies prior to such public notice, the rating of the Securities by any Rating Agency shall be below Investment Grade, (ii) in the event the Securities are rated below Investment Grade by at least two of the Rating Agencies prior to such public notice, the rating of the Securities by any Rating Agency shall be decreased by one or more categories or (iii) the Securities shall not be, or cease to be, rated by at least one of the Rating Agencies; provided that, in each case, such event is in whole or in part in connection with the Change of Control. Notwithstanding the foregoing, no Change of Control Repurchase Event will be deemed to have occurred in connection with any particular Change of Control unless and until such Change of Control has actually been consummated.

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

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

“Consolidated Affiliates” means those Affiliates of the Company that are not Subsidiaries of the Parent or the Company, but are variable interest entities whose accounts are consolidated with those of the Parent under GAAP.

“Consolidated Group” means, collectively, the Parent, the Company, and their respective Subsidiaries and Consolidated Affiliates. Each Person that is the Parent, the Company or a Subsidiary or Consolidated Affiliate thereof included in the Consolidated Group at any time is referred to herein as a “Member of the Consolidated Group.”

“Consolidated Net Tangible Assets” means the total amount of the Company’s assets (less reserves and other properly deductible items) after deducting current liabilities (other than those that are extendable at the Company’s option to a date more than 12 months after the date the amount is determined), goodwill and other intangible assets shown in the Company’s most recent consolidated balance sheet prepared in accordance with GAAP.

“Control” means the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of a Person, whether through the ability to exercise voting power, by contract or otherwise. “Controlling” and “Controlled” have meanings correlative thereto.

“Corporate Trust Office” means the principal office of the Trustee at which at any time its corporate trust business shall be administered, which office at the date hereof is located at Wells Fargo Bank, National Association, 1 Independent Drive, Suite 620, Jacksonville, Florida 32202, Attention: Corporate Trust Services, or such other address as the Trustee may designate from time to time by notice to the Holders and

the Company, or the principal corporate trust office of any successor Trustee (or such other address as such successor Trustee may designate from time to time by notice to the Holders and the Company).

“Credit Facilities” means one or more debt facilities, including the Revolving Credit Facility, or other financing arrangements (including, without limitation, commercial paper facilities or indentures) providing for revolving credit loans, term loans, letters of credit or other long-term indebtedness, including any notes, mortgages, guarantees, collateral documents, instruments and agreements executed in connection therewith, and any amendments, supplements, modifications, extensions, renewals, restatements or refundings thereof and any indentures or credit facilities or commercial paper facilities that replace, refund or refinance any part of the loans, notes, other credit facilities or commitments thereunder, including any such replacement, refunding or refinancing facility or indenture that increases the amount permitted to be borrowed thereunder or alters the maturity thereof or adds Subsidiaries as additional borrowers or guarantors thereunder (provided that such increase in borrowings or addition of Subsidiaries as additional borrowers or guarantors is permitted under Section 4.04) and whether by the same or any other agent, lender or group of lenders.

“Currency Rate Protection Agreement” means any foreign currency exchange and future agreements, arrangements and options designed to protect against fluctuations in currency exchange rates.

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

“Definitive Security” means a certificated Security registered in the name of the Holder thereof and issued in accordance with Section 2.3 to Appendix A of this Indenture, in substantially the form of a Global Security hereto except that such Security shall not bear the Global Security Legend and shall not have the “Schedule of Exchanges of Interests in the Global Security” attached thereto.

“Depositary” means, with respect to the Securities issuable or issued in whole or in part in global form, the Person specified in Section 2.03 as the Depositary with respect to the Securities, and any and all successors thereto appointed as depositary hereunder and having become such pursuant to the applicable provisions of this Indenture.

“Drilling Rig” means any drilling rig (or the stock or indebtedness of any Subsidiary owning a drilling rig) that the Company leases or owns, either entirely or in part; provided that no drilling rig that has a gross book value of less than 1% of the Company’s Consolidated Net Tangible Assets will be deemed to be a “Drilling Rig” for purposes of Section 4.03 hereof.

“Drillship” means any drillship (or the stock or indebtedness of any Subsidiary owning a drillship) that the Company leases or owns, either entirely or in part; provided that no drillship that has a gross book value of less than 1% of the Company’s Consolidated Net Tangible Assets will be deemed to be a “Drillship” for purposes of Section 4.03 hereof.

“Equity Offering” means a primary offering of Capital Stock other than (i) Preferred Stock, (ii) issuances to the Company or a Subsidiary of the Company or (iii) public offerings with respect to the Parent’s common shares made pursuant to an employee benefit plan only to employees of the Parent or its Subsidiaries.

“Exchange Act” means the U.S. Securities Exchange Act of 1934, as amended, and any successor statute.

“Fitch” means Fitch Ratings Ltd. or any successor to the rating agency business thereof.

“Funded Debt” means Indebtedness Incurred by a Subsidiary owning Drilling Rigs or Drillships maturing by its terms more than one year after its creation which indebtedness is classified as long term debt under GAAP, and ranks at least pari passu with the Securities.

“GAAP” means generally accepted accounting principles in the United States set forth in the statements and pronouncements of the Financial Accounting Standards Board or in such other statements by such other entity as have been approved by a significant segment of the accounting profession, which are in effect as of the date of determination.

“Global Security Legend” means the legend set forth in Section 2.3(e)(3) of Appendix A to this Indenture, which is required to be placed on all Global Securities issued under this Indenture.

“Guarantee” means any obligation, contingent or otherwise, of any Person directly or indirectly guaranteeing any Indebtedness or other obligation of any other Person and any obligation, direct or indirect, contingent or otherwise, of such Person:

(1)to purchase or pay (or advance or supply funds for the purchase or payment of) such Indebtedness or other obligation of such other Person (whether arising by virtue of partnership arrangements, or by agreement to keep-well, to purchase assets, goods, securities or services, to take-or-pay, or to maintain financial statement conditions or otherwise); or

(2)entered into for the primary purpose of assuring in any other manner the obligee of such Indebtedness or other obligation of the payment thereof or to protect such obligee against loss in respect thereof (in whole or in part);

provided, however, that the term “Guarantee” shall not include endorsements for collection or deposit in the ordinary course of business. The term “Guarantee” used as a verb has a corresponding meaning.

“Guarantors” means the Parent and the Subsidiary Guarantors.

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

“Incur” means issue, assume, Guarantee, incur or otherwise become liable for. The term “Incurrence” when used as a noun shall have a correlative meaning.

“Indebtedness” means all obligations for borrowed money represented by notes, bonds, debentures, Guarantees or similar evidence of indebtedness and obligations for borrowed money evidenced by credit, loan or other like agreements.

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

“Indirect Participant” means a Person who holds a beneficial interest in a Global Security through a Participant.

“Interest Rate Protection Agreement” means any interest rate swap, interest rate cap, interest rate collar, or other interest rate hedging agreement or arrangement designed to protect against fluctuations in interest rates.

“Investment Grade” means a rating of Baa3 or better by Moody’s (or its equivalent under any successor rating categories of Moody’s); a rating of “BBB-” or better by S&P (or its equivalent under any successor rating categories of S&P); and a rating of “BBB-” or better by Fitch (or its equivalent under any successor rating categories of Fitch).

“Issue Date” means September 11, 2020.

“Legal Holiday” means a Saturday, Sunday or other day on which banking institutions are not required by law or regulation to be open in the State of New York.

“Lien” means any mortgage, pledge, lien, encumbrance, charge or security interest.

“Maturity”, when used with respect to any Security, means the date on which the principal of such Security or an installment of principal becomes due and payable as therein or herein provided, whether at the Stated Maturity or by declaration of acceleration, notice of redemption, exercise of a Holder’s option to require the Company to purchase or repay the Security, or otherwise.

“Midco Guarantors” means each Subsidiary Guarantor that guarantees the Securities on the Issue Date until a successor replaces it and, thereafter, means the successor.

“Moody’s” means Moody’s Investors Service, Inc. or any successor to the rating agency business thereof.

“Net Cash Proceeds” means, with respect to any issuance or sale of Capital Stock, the cash proceeds of such issuance or sale net of attorneys’ fees, accountants’ fees, underwriters’ or placement agents’ fees, discounts or commissions and brokerage, consultant and other fees actually incurred in connection with such issuance or sale and net of taxes paid or payable as a result thereof.

“New Exchangeable Bonds” means the Company’s 2.5% Senior Guaranteed Exchangeable Bonds due 2027.

“Non-Recourse Debt” means (i) any Indebtedness Incurred by any Project Financing Subsidiary to finance the acquisition, improvement, design, engineering, construction, development, completion, maintenance or operation of, or otherwise to pay costs and expenses relating to or Incurred in connection with the foregoing for, any Drillship or Drilling Rig, which Indebtedness does not provide for recourse against the Parent, the Company or any other Member of the Consolidated Group (other than to such Project Financing Subsidiary with respect to customary non-recourse exceptions, and such recourse as exists under a Performance Guarantee given for the benefit of such Project Financing Subsidiary) or any property or asset of the Parent, the Company or any other Member of the Consolidated Group (other than equity interests of, and such Drillship or Drilling Rig and related assets of, such Project Financing Subsidiary, and such recourse as exists under a Performance Guarantee given for the benefit of such Project Financing Subsidiary) and (ii) any Refinancing of such Indebtedness that does not increase the outstanding principal amount thereof (other than to pay costs Incurred in connection therewith and the capitalization of any interest, fees or premium) at the time of the Refinancing, increase the property subject to any Lien securing such Indebtedness, or provide for recourse against any other Member of the Consolidated Group.

“Offering Memorandum” means the Exchange Offer Memorandum and Consent Solicitation Statement, dated August 10, 2020, as supplemented by the Supplement, dated August 24, 2020, relating to the initial offering of the Securities.

“Officer” means any one of the Chief Executive Officer, the Chief Financial Officer, the Chairman, any Deputy Chairman, the President, any Senior Vice President, any Vice President, the Controller, the Treasurer or the Secretary of the Company.

“Officer’s Certificate” means a certificate signed by any Officer of the Company and delivered to the Trustee.

“Opinion of Counsel” means a written opinion of counsel, who may be internal legal counsel for the Company, and who shall be reasonably acceptable to the Trustee.

“Outstanding”, when used with respect to Securities, means, as of the date of determination, all Securities theretofore authenticated and delivered under this Indenture, except:

(1)Securities theretofore cancelled by the Trustee or delivered to the Trustee for cancellation;

(2)Securities, or portions thereof for which payment or redemption money in the necessary amount has been theretofore deposited with the Trustee or any Paying Agent (other than the Company) in trust or set aside and segregated in trust by the Company (if the Company shall act as its own Paying Agent) for the Holders of such Securities; provided that, if such Securities are to be redeemed, notice of such redemption has been duly given pursuant to this Indenture or provision therefor satisfactory to the Trustee has been made;

(3)Securities, except to the extent provided in Sections 8.02 and 8.03, with respect to which the Company has effected defeasance and/or covenant defeasance as provided in Article 8; and

(4)Securities which have been issued pursuant to Section 2.07 or in exchange for or in lieu of which other Securities have been authenticated and delivered pursuant to this Indenture, other than any such Securities in respect of which there shall have been presented to the Trustee proof satisfactory to it that such Securities are held by a “protected purchaser” (as defined in Article 8 of the UCC) in whose hands such Securities are valid obligations of the Company;

provided, however, that in determining whether the Holders of the requisite principal amount of the Outstanding Securities have given any request, demand, authorization, direction, notice, consent or waiver hereunder, or are present at a meeting of Holders for quorum purposes, Securities owned by the Company or any other obligor upon the Securities or any Affiliate of the Company or of such other obligor shall be disregarded and deemed not to be Outstanding, except that in determining whether the Trustee shall be protected in relying upon any such request, demand, authorization, direction, notice, consent or waiver, only Securities which a Trust Officer of the Trustee actually knows to be so owned shall be so disregarded. Securities so owned which have been pledged in good faith may be regarded as Outstanding if the pledgee establishes to the satisfaction of the Trustee the pledgee’s right so to act with respect to such Securities and that the pledgee is not the Company or any other obligor upon the Securities or any Affiliate of the Company or of such other obligor.

“Participant” means, with respect to the Depositary, a Person who has an account with the Depositary.

“Parent Company” means with respect to any Person such other Person, together with any sister company(ies) of such other Person, that collectively own, directly or indirectly, 100% of the outstanding equity interests of that Person.

“Performance Guarantees” means all guarantees of the Company, the Parent, or any other Member of the Consolidated Group delivered in connection with the construction financing of Drillship or Drilling Rig for which firm drilling contracts have been obtained by the Company, the Parent or any other Member of the Consolidated Group.

“Performance Letters of Credit” means all letters of credit issued as support for Non-Recourse Debt or a Performance Guarantee.

“Person” means an individual, partnership, corporation, limited liability company, association, trust, unincorporated organization or any other entity or organization, including any governmental authority.

“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.

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

“Private Placement Legend” means the legend set forth in Section 2.3(e)(1) of Appendix A hereof to be placed on all Securities issued under this Indenture except as otherwise permitted by the provisions of this Indenture.

“Project Financing Subsidiary” means any Subsidiary of the Parent or the Company (other than the Company and the Guarantors) created for the sole purpose of Incurring Non-Recourse Debt to finance the acquisition, improvement, design, engineering, construction, development, completion, maintenance and operation of, or otherwise pay the costs and expenses relating to or Incurred in connection with the foregoing for, any Drillship or Drilling Rig, and to conduct the business activities for which such Non-Recourse Debt was Incurred, provided that substantially all of the assets of such Person are comprised of such Drillship or Drilling Rig so financed.

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

“Rating Agency” means each of Moody’s, S&P and Fitch; provided that, if any of Moody’s, S&P or Fitch ceases to rate the Securities or fails to make a rating of the Securities publicly available for any reason that is beyond the Company’s control, the Company may select (as certified by a resolution of the Company’s Board of Directors) a “nationally recognized statistical rating organization” within the meaning of Rule 15c3-1(c)(2)(vi)(F) under the Exchange Act, as a replacement agency for Moody’s, S&P or Fitch, or all of them, as the case may be.

“Restricted Definitive Security” means one or more Definitive Securities bearing the Private Placement Legend.

“Restricted Global Security” means 144A Global Securities and Regulation S Global Securities.

“Revolving Credit Facility” means the Credit Agreement, dated as of June 22, 2018, among, inter alia, the Company, Citibank, N.A., as administrative agent, Citibank, N.A., as collateral agent, and the lenders party thereto, as amended, supplemented, restated or otherwise modified from time to time.

“Rule 144” means Rule 144 promulgated under the Securities Act.

“Rule 144A” means Rule 144A promulgated under the Securities Act.

“Rule 903” means Rule 903 promulgated under the Securities Act.

“Rule 904” means Rule 904 promulgated under the Securities Act.

“S&P” means S&P Global Ratings, a division of S&P Global, Inc. or any successor to the rating agency business thereof.

“Sale and Leaseback Transaction” means any arrangement with any Person pursuant to which the Company or any of its Subsidiaries leases any Drilling Rig or Drillship that has been or is to be sold or transferred by the Company or any of its Subsidiaries to such Person, other than (1) temporary leases for a term, including renewals at the option of the lessee, of not more than three years, (2) leases between the

Company and any of its Subsidiaries or between any of its Subsidiaries, (3) leases of a Drilling Rig or Drillship executed by the time of, or within 12 months after the latest of, the acquisition, the completion of construction or improvement, or the commencement of commercial operation of, the Drilling Rig or Drillship, and (4) arrangements pursuant to any provision of law with an effect similar to the former Section 168(f)(8) of the Internal Revenue Code of 1954.

“SEC” means the U.S. Securities and Exchange Commission.

“Securities” means the 11.50% Senior Guaranteed Notes due 2027 issued on the Issue Date and the Additional Securities, if any, treated as a single class.

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

“Securities Guarantee” means each Guarantee of the obligations with respect to the Securities issued by a Guarantor pursuant to the term of this Indenture.

“Subsidiary Guarantors” means Transocean Mid Holdings 1 Limited, Transocean Mid Holdings 2 Limited, Transocean Mid Holdings 3 Limited and any other Subsidiary of the Company that has issued a Securities Guarantee.

“Stated Maturity” means, with respect to any security, the date specified in such security as the fixed date on which the final payment of principal of such security is due and payable, including pursuant to any mandatory redemption provision (but excluding any provision providing for the repurchase of such security at the option of the holder thereof upon the happening of any contingency beyond the control of the issuer unless such contingency has occurred).

“Subsidiary” means, for any Person, any other Person of which more than 50% of the outstanding stock or comparable equity interests having ordinary voting power for the election of the board of directors, managers, or comparable governing board or body of such other Person (irrespective of whether or not at the time stock or other equity interests of any other class or classes of such corporation or other entity shall have or might have voting power by reason of the happening of any contingency), is at the time directly or indirectly owned by any such Person or by one or more of its Subsidiaries.

“Treasury Rate” means as of any date of redemption of the Securities, the yield to maturity at the time of computation of United States Treasury securities with a constant maturity (as compiled and published in the most recent Federal Reserve Statistical Release H.15 that has become publicly available at least two Business Days prior to the redemption date (or, if such Statistical Release is no longer published, any publicly available source or similar market data)) most nearly equal to the period from the redemption date to July 30, 2023; provided, however, that if the period from the redemption date to July 30, 2023 is not equal to the constant maturity of a United States Treasury security for which a weekly average yield is given, the Treasury Rate shall be obtained by linear interpolation (calculated to the nearest one-twelfth of a year) from the weekly average yields of United States Treasury securities for which such yields are given, except that if the period from the redemption date to July 30, 2023 is less than one year, the weekly average yield on actually traded United States Treasury securities adjusted to a constant maturity of one year will be used.

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

“Trust 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, assistant treasurer, trust officer or any other officer of the Trustee who customarily performs functions similar to those performed by the Persons who at the time shall be such officers, respectively, or to whom

any corporate trust matter is referred because of such person’s knowledge of and familiarity with the particular subject and, in each case, who shall have direct responsibility for the administration of this Indenture.

“Unrestricted Definitive Securities” means one or more Definitive Securities that do not and are not required to bear the Private Placement Legend.

“Unrestricted Global Securities” means one or more Global Securities that do not and are not required to bear the Private Placement Legend and are deposited with and registered in the name of the Depositary or its nominee.

“Value” means, with respect to a Sale and Leaseback Transaction, an amount equal to the present value of the lease payments with respect to the term of the lease remaining on the date as of which the amount is being determined, without regard to any renewal or extension options contained in the lease which are outstanding on the effective date of such Sale and Leaseback Transaction and which have the benefit of Section 4.05.

“Voting Stock” of any specified “person” (as that term is used in Section 13(d)(3) of the Exchange Act) as of any date means the Capital Stock of such person that is at the time entitled to vote generally in the election of the board of directors of such person.

SECTION 1.02.Other Definitions

Term	Defined in Section
“144A Global Security”	Appendix A 2.1(a)
“Agent Members”	Appendix A 2.1(b)
“Appendix A”	2.01
“Change of Control Offer”	4.02
“Change of Control Payment Date”	4.02(b)(4)
“covenant defeasance”	8.03
“defeasance”	8.02
“DTC”	2.03
“Event of Default”	6.01
“Global Security”	Appendix A 2.1(a)
“Guaranteed Obligations”	11.01
“Initial Lien”	4.03
“Notice of Default”	6.01(4)
“Paying Agent”	2.03
“Registrar”	2.03
“Regulation S Global Security”	Appendix A 2.1(a)
“Trust Indenture Act”	1.06
“U.S. Government Obligations”	8.04

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

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

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

(3)“or” is not exclusive;

(4)“including” means including without limitation;

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

(6)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; and

(7)all references to the date the Securities were originally issued shall refer to the Issue Date.

SECTION 1.04.Agent for Service; Submission to Jurisdiction; Waiver of Immunities. By the execution and delivery of this Indenture, the Company and each Guarantor (i) irrevocably designates and appoints, and acknowledges that it has irrevocably designated and appointed, Transocean Offshore Deepwater Drilling Inc., 1414 Enclave Parkway, Houston, Texas 77077, as its authorized agent upon which process may be served in any suit, action or proceeding arising out of or relating to the Securities, the Securities Guarantees or this Indenture that may be instituted in any United States federal or New York state court in The City of New York or brought under federal or state securities laws or brought by the Trustee (whether in its individual capacity or in its capacity as Trustee hereunder) or, subject to Section 6.07, any Holder of Securities or Securities Guarantees in any United States federal or New York state court in The City of New York, (ii) submits to the non-exclusive jurisdiction of any such court in any such suit, action or proceeding, and (iii) agrees that service of process upon the Company and written notice of said service to the Company (mailed or delivered to its Secretary at its principal office specified in Section 13.01), shall be deemed in every respect effective service of process upon the Company in any such suit, action or proceeding. The Company further agrees to take any and all action, including the execution and filing of any and all such documents and instruments, as may be necessary to continue such designation and appointment of the Company in full force and effect so long as any of the Securities shall be Outstanding or any amounts shall be payable in respect of any Securities.

Each of the Company and the Guarantors irrevocably and unconditionally waives, to the fullest extent permitted by law, any objection that it may now or hereafter have to the laying of venue of any such action, suit or proceeding in any such court or any appellate court with respect thereto and irrevocably waives, to the fullest extent permitted by law, the defense of an inconvenient forum to the maintenance of any such action, suit or proceeding in any such court.

To the extent that the Company or any Guarantor has or hereafter may acquire any immunity from jurisdiction of any court or from any legal process (whether through service of notice, attachment prior to judgment, attachment in aid of execution, execution or otherwise) with respect to itself or its property, each of them hereby irrevocably waives such immunity in respect of its obligations under this Indenture, the Securities Guarantees and the Securities, to the extent permitted by law.

SECTION 1.05.Currency. References herein to “$” or “US$” are to lawful money of United States of America.

SECTION 1.06.No Incorporation by Reference of Trust Indenture Act. This Indenture is not qualified under the U.S. Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”), and the Trust Indenture Act shall not apply to or in any way govern the terms of this Indenture. As a result, no provisions of the Trust Indenture Act are incorporated into this Indenture.

Article 2
The Securities

SECTION 2.01.Form and Dating. Provisions relating to the Securities are set forth in Appendix A attached hereto (“Appendix A”) which is hereby incorporated in, and expressly made part of, this Indenture. The Securities and the Trustee’s certificate of authentication shall be substantially in the form of Exhibit 1.1 and Exhibit 1.2 to Appendix A, in the case of the 144A Global Securities and Regulation S Global Securities, respectively, which are hereby incorporated in, and expressly made a part of, this Indenture. The Securities may have notations, legends or endorsements required by law, stock exchange

rule, agreements to which the Company is subject, if any, or usage (provided that any such notation, legend or endorsement is in a form acceptable to the Company). Each Security shall be dated the date of its authentication. The terms of the Securities set forth in Appendix A are part of the terms of this Indenture.

SECTION 2.02.Execution and Authentication. An Officer shall sign the Securities for the Company by manual or facsimile signature.

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

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

The Trustee, upon a written order of the Company signed by an Officer of the Company, together with the other documents required by Sections 13.02 and 13.03, shall authenticate (i) Securities for original issue on the Issue Date in the aggregate principal amount not to exceed $687,343,000 and (ii) subject to Sections 2.13 and 4.04, Additional Securities; provided that no Opinion of Counsel under Section 13.02 shall be required in connection with the authentication of the initial Securities issued on the Issue Date. Such written order of the Company shall specify the amount of Securities to be authenticated and the date on which the original issue of Securities is to be authenticated.

The Trustee may appoint an authenticating agent reasonably acceptable to the Company to authenticate the Securities. Unless limited by the terms of such appointment, an authenticating agent may authenticate Securities whenever the Trustee may do so. Each reference in this Indenture to authentication by the Trustee includes authentication by such agent. An authenticating agent has the same rights as any Registrar, Paying Agent or agent for service of notices and demands.

SECTION 2.03.Registrar and Paying Agent. The Company shall maintain an office or agency where Securities may be presented for registration of transfer or for exchange (the “Registrar”) and an office or agency where Securities may be presented for payment (the “Paying Agent”). The Registrar shall keep a register of the Securities 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.

If the Company fails to maintain a Registrar or Paying Agent, the Trustee shall act as such and shall be entitled to appropriate reasonable compensation therefor pursuant to Section 7.06. The Company may change the Paying Agent or Registrar without prior notice to the Holders. The Company or any of its Subsidiaries incorporated or organized within The United States of America may act as Paying Agent, Registrar, co-registrar or transfer agent.

The Company initially appoints the Trustee as Registrar and Paying Agent in connection with the Securities.

The Company initially appoints The Depository Trust Company (“DTC”) to act as Depositary with respect to the Global Securities.

SECTION 2.04.Paying Agent To Hold Money in Trust. Prior to each due date of the principal of and interest on any Security, the Company shall deposit with the Paying Agent a sum sufficient to pay such principal and interest when so becoming due. The Company shall require each Paying Agent (other than the Trustee) to agree in writing that the Paying Agent shall hold in trust for the benefit of Holders of Securities or the Trustee all money held by the Paying Agent for the payment of principal of or interest on the Securities and shall notify the Trustee of any default by the Company in making any such payment. If the Company or any of its Subsidiaries 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 2.05.Lists of Holders of Securities. 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 of Securities. If the Trustee is not the Registrar, the Company shall furnish to the Trustee, in writing at least five Business Days before each interest payment date with respect to Securities and at such other times as the Trustee may reasonably request in writing, a list in such form and as of such date as the Trustee may reasonably require of the names and addresses of Holders of Securities.

SECTION 2.06.Transfer and Exchange. The Securities shall be issued in registered form and shall be transferable only upon the surrender of a Security for registration of transfer. When a Security is presented to the Registrar or a co-registrar, if any, with a request to register a transfer, the Registrar shall register the transfer as requested if the requirements of this Indenture (including the Appendix A thereto) are met. When Securities are presented to the Registrar or a co-registrar, if any, with a request to exchange them for an equal principal amount of Securities of other denominations, the Registrar shall make the exchange as requested if the same requirements are met.

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

Neither the Trustee nor any agent of the Trustee shall have any responsibility for any actions taken or not taken by the Depositary.

SECTION 2.07.Replacement Securities. If any mutilated Security is surrendered to the Trustee or either the Company or the Trustee receives evidence to its satisfaction of the destruction, loss or theft of any Security, the Company shall issue and the Trustee, upon receipt of evidence of authentication in accordance with Section 2.02, shall authenticate a replacement Security if the Trustee’s requirements for replacement of Securities are met. An indemnity bond must be supplied by the Holder that is sufficient in the judgment of the Trustee and the Company to protect the Company, the Trustee, any agent and any authenticating agent from any loss that any of them may suffer if a Security is replaced. The Trustee and the Company each may charge such Holder for their expenses in replacing such Security.

Every replacement Security 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 Securities duly issued hereunder.

SECTION 2.08.Outstanding Securities. Securities outstanding at any time are all Securities 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 Security does not cease to be outstanding because the Company or an Affiliate of the Company holds the Security.

If a Security is replaced pursuant to Section 2.07, it ceases to be outstanding unless the Trustee and the Company receive proof satisfactory to them that the replaced Security is held by a protected purchaser (as defined in Section 8-303 of the Uniform Commercial Code).

If the Paying Agent segregates and holds in trust, in accordance with this Indenture, on a redemption date or maturity date money sufficient to pay all principal and interest payable on that date with respect to the Securities (or portions thereof) to be redeemed or maturing, as the case may be, then on and after that date such Securities (or portions thereof) cease to be outstanding and interest on them ceases to accrue.

SECTION 2.09.Temporary Securities. Until definitive Securities are ready for delivery, the Company may prepare and, upon a written order of the Company signed by an Officer of the Company, together with the other documents required by Sections 13.02 and 13.03, the Trustee shall authenticate temporary Securities. Temporary Securities shall be substantially in the form of definitive Securities but may have variations that the Company considers appropriate for temporary Securities. Without unreasonable delay, the Company shall prepare and the Trustee shall authenticate definitive Securities and deliver them in exchange for temporary Securities.

SECTION 2.10.Cancellation. The Company at any time may deliver Securities to the Trustee for cancellation. The Registrar and the Paying Agent shall forward to the Trustee any Securities surrendered to them for registration of transfer, exchange or payment. The Trustee and no one else shall cancel and dispose of in accordance with the Trustee’s policy then in effect (subject to the record retention requirements of the Exchange Act) all Securities surrendered for registration of transfer, exchange, payment or cancellation and deliver a certificate of such cancellation to the Company upon written request unless the Company directs the Trustee to deliver canceled Securities to the Company. The Company may not issue new Securities to replace Securities it has redeemed, paid or delivered to the Trustee for cancellation.

SECTION 2.11.Defaulted Interest. If the Company defaults in a payment of interest on the Securities, the Company shall pay defaulted interest (plus interest on such defaulted interest to the extent lawful) in any lawful manner. The Company may pay the defaulted interest to the persons who are Holders of Securities on a subsequent special record date. The Company shall fix or cause to be fixed any such special record date and payment date to the reasonable satisfaction of the Trustee and shall promptly send to each Holder of Securities a notice that states the special record date, the payment date and the amount of defaulted interest to be paid. The Trustee will have no duty whatsoever to determine whether any defaulted interest is payable or the amount thereof.

SECTION 2.12.CUSIP Numbers, ISINs, etc. The Company in issuing the Securities may use “CUSIP” numbers, ISINs and “Common Code” numbers (in each case if then generally in use) and, if so, the Trustee shall use “CUSIP” numbers, ISINs and “Common Code” numbers in notices of redemption 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 Securities or as contained in any notice of redemption and that reliance may be placed only on the other identification numbers printed on the Securities, and any such redemption shall not be affected by any defect in or omission of such numbers. The Company shall advise the Trustee in writing of any change in any “CUSIP” numbers, ISINs or “Common Code” numbers applicable to the Securities.

SECTION 2.13.Issuance of Additional Securities. After the Issue Date, the Company shall be entitled, subject to its compliance with Section 4.04, to issue Additional Securities under this Indenture, which Securities shall have identical terms as the Securities issued on the Issue Date, other than with respect to the date of issuance, issue price, interest accrual date and first interest payment date. All Securities issued under this Indenture (including any Additional Securities) shall be treated as a single class for all purposes of this Indenture, including waivers, amendments, redemptions and offers to purchase.

With respect to any Additional Securities, the Company shall set forth in a resolution of the Board of Directors and an Officer’s Certificate, a copy of each which shall be delivered to the Trustee, the following information:

(1)the series and the aggregate principal amount of such Additional Securities to be authenticated and delivered pursuant to this Indenture; and

(2)the issue price, the issue date and the CUSIP number and ISIN, if any, of such Additional Securities; provided, however, that if the Additional Securities are not fungible with the Securities for U.S. federal income tax purposes, the Additional Securities will have a separate CUSIP number.

In addition to the foregoing, the Company shall deliver to the Trustee a written order as described in Section 2.01, an Opinion of Counsel as to enforceability of the Additional Securities, together with an Opinion of Counsel that all conditions precedent to the issuance and authentication of the Additional Securities have been satisfied.

Article 3
Redemption

SECTION 3.01.Notices to Trustee. If the Company elects to redeem Securities pursuant to Section 3.08 or Section 3.09, it shall notify the Trustee in writing of the redemption date, the principal amount of Securities to be redeemed, the redemption price, if then ascertainable and the paragraph or subparagraph of such Article or Section of this Indenture pursuant to which the redemption shall occur.

The Company shall give each notice to the Trustee provided for in this Section at least five Business Days prior to notification of the Holders unless the Trustee consents to a shorter period. Such notice shall be accompanied by an Officer’s Certificate and an Opinion of Counsel from the Company to the effect that such redemption will comply with the conditions herein.

SECTION 3.02.Selection of Securities to Be Redeemed. If fewer than all the Securities are to be redeemed, the Trustee shall select the Securities to be redeemed (1) if such Securities are listed on any national securities exchange, in compliance with the requirements of the principal national securities exchange on which such Securities are listed, (2) if such Securities are not so listed but are in global form, then on a pro rata basis or otherwise in accordance with the procedures of the Depositary or (3) if such Securities are not so listed and are not in global form, then on a pro rata basis, although no Security of US$1,000 in original principal amount or less will be redeemed in part. Provisions of this Indenture that apply to Securities called for redemption also apply to portions of Securities called for redemption. The Trustee shall notify the Company promptly of the Securities or portions of Securities to be redeemed.

SECTION 3.03.Notice of Redemption. At least 10 days but not more than 60 days before a date for redemption of Securities, the Company shall send, or cause to be sent (in the case of Securities held in book-entry form, by electronic transmission) a notice of redemption to each Holder of Securities to be redeemed at such Holder’s registered address or otherwise in accordance with the procedures of the Depositary. Notwithstanding the above, when notice has to be given to a holder of a global security (including any notice of redemption) such notice shall be sufficiently given if given to the Depositary (or its designee) pursuant to the standing instructions from the Depositary or its designee, including by electronic mail in accordance with Applicable Procedures. Notices to the Trustee may be given by email in PDF format. Notices of redemption may be subject to one or more conditions precedent.

The notice shall identify the Securities to be redeemed and shall state:

(1)the redemption date;

(2)the redemption price;

(3)the name and address of the Paying Agent;

(4)that Securities called for redemption must be surrendered to the Paying Agent to collect the redemption price;

(5)if fewer than all the Outstanding Securities are to be redeemed, the identification and principal amounts of the particular Securities to be redeemed;

(6)that, unless the Company defaults in making such redemption payment, interest on Securities (or portion thereof) called for redemption ceases to accrue on and after the redemption date;

(7)the “CUSIP” number, ISIN or “Common Code” number, if any, printed on the Securities being redeemed;

(8)the paragraph of the Securities and/or Section of this Indenture pursuant to which the Securities called for redemption are being redeemed;

(9)any conditions precedent to the redemption of the Securities; and

(10)that no representation is made as to the correctness or accuracy of the “CUSIP” number, ISIN, or “Common Code” number, if any, listed in such notice or printed on the Securities.

At the Company’s request, the Trustee shall give the notice of redemption in the Company’s name and at the Company’s expense. In such event, the Company shall provide the Trustee with an Officer’s Certificate delivered three Business Days prior to notification of the Holders (unless the Trustee consents to a shorter period) containing the information required by this Section.

SECTION 3.04.Effect of Notice of Redemption. Once notice of redemption is sent, Securities called for redemption become due and payable on the redemption date and at the redemption price stated in the notice, unless the conditions described in the notice of redemption have not been satisfied. Upon surrender to the Paying Agent, such Securities shall be paid at the redemption price stated in the notice, plus accrued interest to the redemption date (subject to the right of Holders of record on the relevant record date to receive interest due on the related interest payment date), and such Securities shall be canceled by the Trustee. Failure to give notice or any defect in the notice to any Holder shall not affect the validity of the notice to any other Holder.

SECTION 3.05.Deposit of Redemption Price. On or prior to 11:00 a.m., New York City time on the redemption date, the Company shall deposit with the Paying Agent (or, if the Company or any of its Subsidiaries is the Paying Agent, shall segregate and hold in trust) money sufficient to pay the redemption price of and accrued interest on all Securities or portions thereof to be redeemed on that date other than Securities or portions of Securities called for redemption which have been delivered by the Company to the Trustee for cancellation.

SECTION 3.06.Securities Redeemed in Part. Upon surrender of a Security that is redeemed in part, the Company shall execute and the Trustee shall authenticate for the Holder (at the Company’s expense) a new Security equal in principal amount to the unredeemed portion of the Security surrendered.

SECTION 3.07.No Mandatory Redemption; Open Market Repurchase. The Company is not required to make mandatory redemption or sinking fund payments with respect to the Securities. The Company, the Parent and its Subsidiaries may at any time and from time to time acquire Securities through redemption, by tender offer, open market purchases, negotiated transactions or otherwise, in accordance with applicable securities laws and regulations, so long as such acquisition does not otherwise violate the terms of this Indenture, upon such terms and at such prices as the Company, the Parent or its Subsidiaries

may determine. Any such acquisition shall not operate as or be deemed for any purpose to be a redemption unless the Company has expressly stated that it is exercising its redemption rights hereunder.

SECTION 3.08.Optional Redemption.

(a)The Securities.

(1)Prior to July 30, 2023, the Company may, on one or more occasions, redeem up to a maximum of 40% of the original aggregate principal amount of the Securities (calculated giving effect to any issuance of Additional Securities) with the Net Cash Proceeds of one or more Equity Offerings by the Parent, at a redemption price equal to 111.50% of the principal amount thereof, plus accrued and unpaid interest, if any, to, but not including, the redemption date (subject to the right of Holders on the relevant record date to receive interest due on the relevant interest payment date); provided, however, that after giving effect to any such redemption (1) at least 60% of the aggregate principal amount of the Securities (calculated giving effect to any issuance of Additional Securities) remains outstanding; and (2) any such redemption by the Company must be made within 60 days of such Equity Offering.

(2)Prior to July 30, 2023, the Company shall be entitled at its option to redeem the Securities, in whole or in part, at a redemption price equal to 100% of the principal amount of the Securities plus the Applicable Premium as of, and accrued and unpaid interest, if any, to (but not including), the redemption date (subject to the right of Holders on the relevant record date to receive interest due on the relevant interest payment date).

(3)On or after July 30, 2023, the Company shall be entitled at its option to redeem the Securities, in whole or in part, at the redemption prices applicable to the Securities (expressed as a percentage of principal amount of the Securities to be redeemed) set forth below, plus accrued and unpaid interest thereon to, but not including, the date of redemption (subject to the right of Holders on the relevant record date to receive interest due on the relevant interest payment date) if redeemed during the twelve-month period beginning on July 30 of the years indicated below:

Year	Percentage
2023	105.750%
2024	102.875%
2025 and thereafter	100.000%

(4)In connection with any tender offer (including any offer to repurchase following a Change of Control Repurchase Event) for Securities, if Holders of not less than 90% of the aggregate principal amount of the Outstanding Securities accept the offer to repurchase the Securities in such offer and the Company (or any of its Affiliates) purchases all of the Securities validly tendered and not withdrawn by such Holders, the Company shall have the right, upon not less than 10 days’ nor more than 60 days’ prior notice, given not more than 30 days following the purchase pursuant to the offer to purchase made pursuant to this paragraph (including for the avoidance of doubt a Change of Control Offer made pursuant to Section 4.02), to redeem all of the Securities that remain Outstanding following such purchase at a redemption price equal to the price paid to each other Holder of the Securities in such tender offer plus, to the extent not included in the tender offer payment, any accrued and unpaid interest on the Securities redeemed to, but not including, the date of redemption.

(b)Any redemption pursuant to this Section 3.08 shall be made pursuant to Sections 3.01 through 3.06.

SECTION 3.09.Tax Redemption. (a) The Securities shall be subject to redemption at any time, in whole but not in part, at a redemption price equal to the principal amount thereof together with

accrued and unpaid interest to, but not including, the date fixed for redemption, upon the giving of a notice as described below, if the Company determines that:

(1)as a result of (A) any change in or amendment to the laws or treaties (or any regulations or rulings promulgated thereunder) of any Taxing Jurisdiction, or (B) any change in the official position regarding the application or interpretation of such laws, treaties, regulations or rulings by any legislative body, court, governmental agency or regulatory authority (including a holding by a court of competent jurisdiction), which change or amendment becomes effective on or after (i) August 10, 2020, or (ii) the date a party organized in a jurisdiction other than the Cayman Islands or Switzerland becomes the Company’s successor, the Company or such successor, as applicable, have or will become obligated to pay, on the next succeeding date on which interest is due, Additional Amounts pursuant to Section 12.01 with respect to any Security; or

(2)on or after (i) August 10, 2020, or (ii) the date a party organized in a jurisdiction other than the Cayman Islands or Switzerland becomes the Company’s successor, any action has been taken by any taxing authority of, or any decision has been rendered by a court of competent jurisdiction in, the Cayman Islands or Switzerland (or the jurisdiction of organization of the Company’s successor) or any political subdivision or taxing authority thereof or therein, including any of those actions specified in Section 3.09(a)(1), whether or not such action was taken or such decision was rendered with respect to the Company or such successor, as applicable, or any change, amendment, application or interpretation will be officially proposed, which, in any such case, in an Opinion of Counsel, will result in the Company, or the successor, as applicable, becoming obligated to pay, on the next succeeding date on which interest is due, Additional Amounts with respect to any Securities, and, in any such case, the Company, in its business judgment, determines that such obligation cannot be avoided by the use of reasonable measures available to the Company.

(b)In the event that the Company elects to redeem the Securities pursuant to Section 3.09(a), the Company shall deliver to the Trustee an Officer’s Certificate stating that the Company is entitled to redeem the Securities pursuant to their terms.

Article 4
Covenants

SECTION 4.01.Payment of Securities. The Company shall promptly pay the principal of (and premium, if any) and interest on the Securities on the dates and in the manner provided in the Securities and in this Indenture. Principal and interest shall be considered paid on the date due if the Trustee or the Paying Agent holds in accordance with this Indenture as of 11:00 a.m. New York City time on the due date money sufficient to pay all principal and interest then due.

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

SECTION 4.02.Change of Control Repurchase Event. (a) Upon the occurrence of a Change of Control Repurchase Event, unless all Securities have been called for redemption pursuant to Section 3.08, the Company shall be required to make an offer (a “Change of Control Offer”) to each Holder of the Securities to repurchase all or any part (in minimum denominations of US$1,000 and integral multiples of US$1,000 in excess thereof) of such Holder’s Securities at a repurchase price in cash equal to the Change of Control Payment.

(b)Within 45 days following any Change of Control Repurchase Event, or, at the Company’s option, prior to any Change of Control, but after the public announcement of the Change of Control, the

Company shall send, or cause to be sent, or when the Securities are in the form of Global Securities, send by electronic means pursuant to the Applicable Procedures a notice to each Holder of Securities, with a copy to the Trustee, describing the transaction or transactions that constitute or may constitute the Change of Control Repurchase Event and offering to repurchase the Securities on the Change of Control Payment Date specified in such notice and specifying:

(1)if applicable, that a Change of Control has occurred and that such Holder has the right to require the Company to purchase all or a portion of such Holder’s Securities at a repurchase price in cash equal to the Change of Control Payment and that all Securities tendered will be accepted for payment;

(2)the circumstances and relevant facts regarding such Change of Control;

(3)the instructions, as determined by the Company, consistent with this Section 4.02, that a Holder must follow in order to have its Securities purchased;

(4)the Change of Control Payment and the repurchase date, which date shall be a Business Day no earlier than 30 days and no later than 60 days from the date such notice is sent, other than as may be required by law (the “Change of Control Payment Date”);

(5)the CUSIP number for the Securities;

(6)that any Security not tendered will continue to accrue interest;

(7)that, unless the Company defaults in the payment of the Change of Control Payment, all Securities accepted for payment pursuant to the Change of Control Offer will cease to accrue interest after the Change of Control Payment Date;

(8)that Holders electing to have any Securities purchased pursuant to a Change of Control Offer will be required to surrender such Securities to the Paying Agent at the address specified in the notice prior to the close of business on the third Business Day preceding the Change of Control Payment Date;

(9)that Holders will be entitled to withdraw their election referred to in clause (8) if the Paying Agent receives, not later than the close of business on the first Business Day preceding the Change of Control Payment Date, a facsimile transmission or letter setting forth the name of the Holder, the principal amount of Securities delivered for purchase, and a statement that such Holder is withdrawing his election to have the Securities purchased;

(10)that Holders whose Securities are being purchased only in part will be issued new Securities equal in principal amount to the unpurchased portion of the Securities surrendered, which unpurchased portion will be equal to US$1,000 in principal amount or an integral multiple of US$1,000 in excess thereof; and

(11)if such notice is sent prior to the date of consummation of the Change of Control, that the Change of Control Offer is conditioned on the Change of Control Repurchase Event occurring on or prior to the Change of Control Payment Date.

(c)The Company shall cause the Change of Control Offer to remain open for at least 20 Business Days or such longer period as is required by applicable law. The Company shall comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the Securities as a result of a Change of Control Repurchase Event. To the extent that the provisions of any securities laws or regulations conflict with the provisions of this Section 4.02, the Company will comply

with the applicable securities laws and regulations and will not be deemed to have breached its obligations under this Section 4.02 by virtue of such conflict.

(d)On the Change of Control Payment Date, the Company will, to the extent lawful:

(1)accept for payment all Securities or portions thereof properly tendered pursuant to the Change of Control Offer;

(2)deposit with the Trustee or the Paying Agent, as applicable, an amount equal to the Change of Control Payment in respect of all Securities or portions of Securities properly tendered; and

(3)deliver or cause to be delivered to the Trustee or the Paying Agent, as applicable, the Securities so accepted by the Company, for cancellation, together with an Officer’s Certificate stating the aggregate principal amount of Securities or portions of Securities being purchased by the Company.

(e)The Trustee or the Paying Agent, as applicable, will promptly mail (or, in the case of global notes, make such payment through the facilities of DTC) to each Holder of Securities properly tendered the Change of Control Payment for such Securities, and the Trustee will promptly authenticate and mail (or cause to be transferred by book entry) to each Holder a new Security equal in principal amount to any unpurchased portion of any Securities surrendered; provided, that each new Security will be in a minimum principal amount of US$1,000 and integral multiples of US$1,000 in excess thereof.

(f)The Company shall not be required to make a Change of Control Offer upon a Change of Control Repurchase Event if a third party makes the Change of Control Offer in the manner, at the times and otherwise in compliance with the requirements set forth in this Section 4.02 applicable to a Change of Control Offer made by the Company and such third party purchases all Securities properly tendered and not withdrawn under such Change of Control Offer.

(g)The provisions set forth in this Section 4.02 may be waived or modified with the written consent of the Holders of a majority in principal amount of the Securities.

SECTION 4.03.Limitation on Liens. The Company shall not, and shall not permit or allow any of its Subsidiaries to, create, assume or suffer to exist any Lien on any Drilling Rig or Drillship to secure any Indebtedness of the Company, any of its Subsidiaries or any other Person (such Lien, the “Initial Lien”), without making effective provision whereby the Indenture and the Securities then Outstanding and having the benefit of this Section 4.03 shall be directly secured equally and ratably with, or prior to, the Indebtedness secured by such Initial Lien for so long as such Indebtedness shall be so secured, except that the foregoing shall not prevent the Company or any of its Subsidiaries from creating, assuming or suffering to exist Liens of the following character:

(1)Liens existing on the Issue Date;

(2)Liens already existing on a particular Drilling Rig or Drillship at the time the Company or any of its Subsidiaries acquire that Drilling Rig or Drillship,

(3)Liens already existing on Drilling Rigs or Drillships of a corporation or other entity at the time it becomes the Company’s Subsidiary;

(4)Liens securing Indebtedness Incurred pursuant to clause (3) or clause (10) of Section 4.04(a);

(5)Liens in favor of the United States of America or any State thereof or any other country, or any agency, instrumentality of political subdivision of any of the foregoing, to secure partial, progress, advance or other payments or performance pursuant to the provisions of any contract or statute, or any Liens securing industrial development, pollution control, or similar revenue bonds;

(6)Liens imposed by law, such as mechanics’, workmen’s, repairmen’s, materialmen’s, carriers’, warehousemen’s, vendors’ or other similar Liens arising in the ordinary course of business, or governmental (federal, state or municipal) Liens arising out of contracts for the sale of products or services by the Company or any of its Subsidiaries, or deposits or pledges to obtain the release of any of the foregoing;

(7)pledges or deposits under workmen’s compensation laws or similar legislation and Liens of judgments thereunder which are not currently dischargeable, or good faith deposits in connection with bids, tenders, contracts (other than for the payment of money) or leases to which the Company or any of its Subsidiaries is a party, or deposits to secure public or statutory obligations of the Company or any of its Subsidiaries, or deposits in connection with obtaining or maintaining self-insurance or to obtain the benefits of any law, regulation or arrangement pertaining to unemployment insurance, old age pensions, social security or similar matters, or deposits of cash or obligations of the United States of America to secure surety, appeal or customs bonds to which the Company or any of its Subsidiaries is a party, or deposits in litigation or other proceedings such as, but not limited to, interpleader proceedings;

(8)Liens created by or resulting from any litigation or other proceeding which is being contested in good faith by appropriate proceedings, including Liens arising out of judgments or awards against the Company or any of its Subsidiaries with respect to which the Company or such Subsidiary is in good faith prosecuting an appeal or proceedings for review; or Liens Incurred by the Company or any of its Subsidiaries for the purpose of obtaining a stay or discharge in the course of any litigation or other proceeding to which the Company or such Subsidiary is a party;

(9)Liens for taxes or assessments or governmental charges or levies not yet due or delinquent, or which can thereafter be paid without penalty, or which are being contested in good faith by appropriate proceedings; and

(10)any extension, renewal or replacement (or successive extensions, renewals or replacements) in whole or in part of any Lien referred to in clauses (1) through (9) above, so long as the principal amount of the debt secured thereby does not exceed the principal amount of debt so secured at the time of the extension, renewal or replacement (except that, where an additional principal amount of debt is Incurred to provide funds for the completion of a specific project, the additional principal amount, and any related financing costs, may be secured by the Lien as well) and the Lien is limited to the same property subject to the Lien so extended, renewed or replaced (plus improvements on the property).

In addition, without securing the Securities as described above, the Company and its Subsidiaries may create, assume or allow to exist any Lien not permitted by clauses (1) through (10) above securing Indebtedness, if after giving effect thereto, Aggregate Debt would not exceed the greater of (i) $1.4 billion and (ii) 6.75% of Consolidated Net Tangible Assets measured at the time of Incurrence of and after giving effect to such Incurrence.

SECTION 4.04.Limitation on Subsidiary Indebtedness. (a) The Company shall not permit any of its Subsidiaries to Incur, directly or indirectly, any Indebtedness other than:

(1)existing Indebtedness of a Subsidiary of the Company outstanding on the Issue Date (other than Indebtedness described in clauses (2) and (13) of this Section 4.04(a));

(2)Indebtedness represented by (x) the New Exchangeable Bonds and any Guarantees thereof issued and outstanding as of the Issue Date (not including any additional New Exchangeable Bonds or Guarantees thereof) and (y) the Securities or the Securities Guarantees issued and outstanding as of the Issue Date (not including any Additional Securities or Guarantees thereof);

(3)intercompany loans and advances between or among the Parent, the Company and the Subsidiaries of the Company; provided that (a) if the obligor on such intercompany loan or advance is a Subsidiary Guarantor or a Subsidiary thereof and the payee is not a Subsidiary Guarantor or a Subsidiary thereof, then (i) such Indebtedness must be expressly subordinated to the prior payment in full in cash of all obligations with respect to the Securities Guarantees, (ii) such Indebtedness must be Incurred in the ordinary course of business or consistent with past practice or (iii) such Indebtedness does not, and is not reasonably expected to be (as determined in good faith by the board of directors or an executive officer of the Parent in its sole and absolute discretion, which determination shall be made at the time of, and based on facts existing as of, the Incurrence of such Indebtedness) materially adversely affect the Company’s ability to make principal or interest payments on the Securities (including by considering the use of any sources of capital that may be available to the Company or its Affiliates at any applicable times, the financing or refinancing of any Indebtedness of any Member of the Consolidated Group or other transactions deemed necessary or advisable), and (b)(i) any subsequent issuance or transfer of Capital Stock that results in any such Indebtedness being held by a Person other than the Parent, the Company or a Subsidiary of the Company and (ii) any sale or other transfer of any such Indebtedness to a Person that is not either the Parent, the Company or a Subsidiary of the Company, will be deemed, in each case, to constitute an Incurrence of such Indebtedness by such Subsidiary that was not permitted by this clause (3);

(4)Indebtedness under any Interest Rate Protection Agreement or any Currency Rate Protection Agreement;

(5)Indebtedness (i) under unsecured lines of credit for overdrafts or for working capital purposes in foreign countries with financial institutions, and (ii) arising from the honoring by a bank or other Person of a check, draft or similar instrument inadvertently drawing against insufficient funds, all such Indebtedness not to exceed $300,000,000 in the aggregate at any time outstanding, provided that amounts under overdraft lines of credit or outstanding as a result of drawings against insufficient funds shall be outstanding for one (1) business day before being included in such aggregate amount;

(6)Indebtedness of a Person existing at the time such Person becomes a Member of the Consolidated Group or is merged, consolidated or amalgamated with or into the Company or any other Member of the Consolidated Group (each, a “Transaction”) and not Incurred in contemplation of such Transaction, and Refinancings thereof that do not increase the amount of such Indebtedness (other than amounts included to pay costs of such Refinancing); provided that (x) such Transaction has been duly authorized by the board of directors of the Parent acting in good faith and (y) such Transaction does not, and is not reasonably expected to be (as determined in good faith by the board of directors of the Parent in its sole and absolute discretion, which determination shall be made at the time of, and based on facts existing as of, the consummation of

the Transaction) materially adversely affect the Company’s ability to make principal or interest payments on the Securities (including by considering the use of any sources of capital that may be available to the Company or its Affiliates at any applicable times, the financing or refinancing of any Indebtedness of any Member of the Consolidated Group or other transactions deemed necessary or advisable);

(7)Indebtedness (i) under Performance Guarantees and Performance Letters of Credit, and (ii) with respect to letters of credit issued in the ordinary course of business;

(8)Indebtedness Incurred by any Subsidiary Guarantor in an aggregate amount at any one time outstanding under this clause (8) not to exceed the greater of (x) $1.1 billion and (y) 5.50% of Consolidated Net Tangible Assets measured at the time of Incurrence of any such Indebtedness and after giving effect to such Incurrence; provided that (i) such amounts shall be reduced by the aggregate principal amount of New Exchangeable Bonds and the Securities Incurred under clause (2) above and outstanding as of such date of Incurrence and (ii) Indebtedness under this clause (8) is unsecured unless the Securities are equally and ratably secured with such Indebtedness;

(9)Indebtedness of any Subsidiary that is subordinate in right of payment to the Securities and the Securities Guarantee and the New Exchangeable Bonds and the Guarantees thereof;

(10)Indebtedness Incurred t