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Item 7. Management’s Discussion and Analysis

2024-02-21 compared with 2023-02-23 · 160 added, 270 removed, 226 unchanged (66% of the section changed)

Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following information should be read in conjunction with the information contained in “ Part I.

Business ,” “ Part I.

Risk Factors ” and the audited consolidated financial statements and the notes thereto included under “ Item 8.

Financial Statements and Supplementary Data ” elsewhere in this annual report on Form 10-K.

The following discussion of our results of operations and liquidity and capital resources includes comparisons for the years ended December 31, 2022 and 2021.

For a discussion, including comparisons, of our results of operations and liquidity and capital resources for the years ended December 31, 2021 and 2020, see “Part II.

Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our annual report on Form 10-K for the year ended December 31, 2021 , filed with the United States (“U.S.”) Securities and Exchange Commission on February 23, 2022.

Transocean Ltd.

(together with its subsidiaries and predecessors, unless the context requires otherwise, “Transocean,” “we,” “us” or “our”) is a leading international provider of offshore contract drilling services for oil and gas wells.

As of February 14, 2023, we owned or had partial ownership interests in and operated 37 mobile offshore drilling units, consisting of 27 ultra-deepwater floaters and 10 harsh environment floaters.

Additionally, as of February 14, 2023, we were constructing one ultra-deepwater drillship and held a noncontrolling ownership interest in a company that is constructing one ultra-deepwater drillship.

As of February 14, 2024, we owned or had partial ownership interests in and operated 37 mobile offshore drilling units, consisting of 28 ultra-deepwater floaters and nine harsh environment floaters.

Additionally, as of February 14, 2024, we were constructing one ultra-deepwater drillship.

We provide, as our primary business, contract drilling services in a single operating segment, which involves contracting our mobile offshore drilling rigs, related equipment and work crews to drill oil and gas wells.

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The location of our rigs and the allocation of resources to operate, build or upgrade our rigs are determined by the activities and needs of our customers.

The information contained in this section should be read in conjunction with the information contained in “ Part I.

Business ,” “ Part I.

Risk Factors ” and the audited consolidated financial statements and the notes thereto included under “ Item 8.

Financial Statements and Supplementary Data ” elsewhere in this annual report on Form 10-K.

The following discussion of our results of operations and liquidity and capital resources includes comparisons for the years ended December 31, 2023 and 2022.

For a discussion, including comparisons, of our results of operations and liquidity and capital resources for the years ended December 31, 2022 and 2021, see “Part II.

Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our annual report on Form 10-K for the year ended December 31, 2022 , filed with the United States (“U.S.”) Securities and Exchange Commission on February 23, 2023.

Significant Events

Fleet expansion —In October 2022, we completed the construction of and placed into service the ultra-deepwater floater Deepwater Atlas .

In November 2022, we made a cash contribution of $15 million associated with our noncontrolling ownership interest in Liquila Ventures Ltd.

(together with its subsidiaries, “Liquila”), a Bermuda company formed to construct, own and operate the newbuild ultra-deepwater drillship Deepwater Aquila .

See “— Liquidity and Capital Resources—Sources and uses of liquidity ” and “— Liquidity and Capital Resources—Drilling fleet .”

Fleet expansion —In May 2023, we completed the construction of and placed into service the ultra-deepwater floater Deepwater Titan , the first drillship equipped with two 20,000 psi blowout preventers.

Additionally, in September 2023, we issued 11.9 million Transocean Ltd.

shares with an aggregate value of $99 million to acquire the outstanding ownership interests of Liquila Ventures Ltd.

(together with its subsidiaries, “Liquila”), a previously unconsolidated variable interest entity that is constructing the ultra-deepwater drillship Deepwater Aquila , and as a result, Liquila became our wholly owned subsidiary.

See “— Liquidity and Capital Resources—Sources and uses of liquidity .”

Secured debt issuance —In January 2023, we issued $525 million aggregate principal amount of 8.375% senior secured notes due February 2028 (the “8.375% Senior Secured Notes”), and we received $516 million aggregate cash proceeds, net of issue costs.

In January 2023, we issued $1.175 billion aggregate principal amount of 8.75% senior secured notes due February 2030 (the “8.75% Senior Secured Notes”), and we received $1.148 billion aggregate cash proceeds, net of issue costs.

See “— Liquidity and Capital Resources—Sources and uses of liquidity .”

Debt and warrant issuance —In September 2022, we issued $300 million aggregate principal amount of 4.625% senior guaranteed exchangeable bonds due September 2029 (the “4.625% Senior Guaranteed Exchangeable Bonds”) in connection with (a) the issuance for aggregate cash proceeds of $188 million and (b) the exchanges (the “2022 Private Exchange”) of certain of the 0.50% exchangeable senior bonds due January 2023 (the “0.50% Exchangeable Senior Bonds”) and the 7.25% senior notes due November 2025 (the “7.25% Senior Notes”).

In connection with the 2022 Private Exchange, we also issued 22.2 million warrants to purchase Transocean Ltd.

In October 2023, we issued $325 million aggregate principal amount of 8.00% senior secured notes due September 2028 (the “8.00% Senior Secured Notes”), and we received $319 million aggregate cash proceeds, net of issue costs.

See “— Liquidity and Capital Resources—Sources and uses of liquidity .”

Shipyard Loans —In June 2022, we borrowed $349 million under one of two credit agreements (each, a “Shipyard Loan,” and together, the “Shipyard Loans”) and made a cash payment of $46 million to satisfy the final milestone payment due upon delivery of Deepwater Atlas .

In December 2022, we borrowed $90 million under the second Shipyard Loan and made a cash payment of $325 million to satisfy the final milestone payment due upon delivery of Deepwater Titan .

We recorded the Shipyard Loan for Deepwater Atlas and Deepwater Titan , net of imputed interest, and the corresponding non-cash capital additions of $300 million and $82 million, respectively.

See “— Liquidity and Capital Resources—Sources and uses of liquidity ” and “— Liquidity and Capital Resources—Drilling fleet .”

Early debt retirement —In January 2023, in connection with the issuance of the 8.75% Senior Secured Notes, we made an aggregate payment of $1.156 billion, including a make-whole premium, to redeem the remaining outstanding $311 million, $240 million, $250 million, and $336 million aggregate principal amount of the 5.875% senior secured notes due January 2024 (the “5.875% Senior Secured Notes”), the 7.75% senior secured notes due October 2024 (the “7.75% Senior Secured Notes”), the 6.25% senior secured notes

due December 2024 (the “6.25% Senior Secured Notes”) and the 6.125% senior secured notes due August 2025 (the “6.125% Senior Secured Notes”), respectively.

In January 2023, we made a cash payment of $121 million to redeem an equivalent aggregate principal amount of the outstanding 5.375% senior secured notes due May 2023 (the “5.375% Senior Secured Notes”), and the trustee notified holders of our intent to redeem the remaining outstanding $122 million aggregate principal amount of notes for an equivalent aggregate cash payment, expected to be made on February 24, 2023.

In July 2022, we made an aggregate cash payment of $27 million to redeem an equivalent aggregate principal amount of the then outstanding 3.80% senior notes due October 2022 (the “3.80% Senior Notes”).

In January 2022, we made an aggregate cash payment of $18 million to redeem an equivalent aggregate principal amount of the 5.52% senior secured notes due May 2022 (the “5.52% Senior Secured Notes”).

See “— Operating Results ” and “— Liquidity and Capital Resources—Sources and uses of liquidity .”

Share issuance —In June 2021, we commenced an at-the-market equity offering program (the “ATM Program”).

In the year ended December 31, 2022, we received aggregate cash proceeds of $263 million, net of issue costs, for the aggregate sale of 61.0 million shares under the ATM Program.

Early debt retirement —In January 2023, in connection with the issuance of the 8.75% Senior Secured Notes, we made an aggregate cash payment of $1.159 billion, including a make-whole premium, to redeem the remaining outstanding $311 million, $240 million, $250 million, and $336 million aggregate principal amount of the 5.875% senior secured notes due January 2024, the 7.75% senior secured notes due October 2024, the 6.25% senior secured notes due December 2024 and the 6.125% senior secured notes due August 2025, respectively.

In the year ended December 31, 2023, we made a cash payment of $243 million to redeem an equivalent aggregate principal amount of the outstanding 5.375% senior secured notes due May 2023.

See “— Liquidity and Capital Resources—Sources and uses of liquidity .”

Secured credit facility amendment —In July 2022, we amended the bank credit agreement for our Secured Credit Facility (as amended from time to time, the “Secured Credit Facility”) to, among other things, extend the maturity date from June 22, 2023 to June 22, 2025 and reduce the borrowing capacity from $1.33 billion to $774 million through June 22, 2023, and thereafter, reduce the borrowing capacity to $600 million through June 22, 2025.

Exchanged bonds —In the year ended December 31, 2023, holders of the outstanding $238 million aggregate principal amount of the 2.50% senior guaranteed exchangeable bonds due January 2027 (the “2.50% Senior Guaranteed Exchangeable Bonds”) exchanged such bonds under the terms of the governing indenture, and as part of the transactions, we delivered 38.6 million Transocean Ltd.

In October 2023, our wholly owned subsidiary, Transocean Inc., entered into individually negotiated agreements with holders of $60 million and $41 million aggregate principal amount of the 4.00% senior guaranteed exchangeable bonds due December 2025 (the “4.00% Senior Guaranteed Exchangeable Bonds”) and the 4.625% senior guaranteed exchangeable bonds due September 2029 (the “4.625% Senior Guaranteed Exchangeable Bonds”), respectively and, as part of the transactions, we delivered 26.5 million Transocean Ltd.

shares to such holders.

See “— Liquidity and Capital Resources—Sources and uses of liquidity .”

Drilling market —Our industry outlook is positive based upon several fundamental factors, including the increased global demand for hydrocarbons combined with a diminishing global supply, the latter being the result of the natural decline in production of existing oil and gas fields compounded by the significant underinvestment in reserve replacement by oil and gas producers, and additional constraints imposed on industry participants by the governments of oil and gas producing nations as well as investors.

Additionally, the Russian invasion of Ukraine and the related economic sanctions have highlighted the criticality of energy reliability and security across Europe, the U.S.

and elsewhere.

Due to these and other factors, oil prices have increased materially over the past two years and even reached 10-year highs.

Although the price for both prompt and longer-dated barrels continues to exhibit volatility that reflects market concerns about inflationary trends, economic recession and the potential for demand destruction, these commodity prices are currently, and are expected to remain, at levels that are robustly supportive of investment in deepwater and harsh environment exploration and development projects.

Additionally, rig attrition resulting from significantly reduced offshore contracting activity over the last several years has resulted in a much smaller global fleet of floating rigs that is available to meet customer demands, specifically with respect to the highest specification drilling units required by many of our customers for their projects.

Consequently, our outlook for the offshore drilling industry overall remains positive, particularly for high-specification drilling assets, such as those we own and operate.

Our customers continue to show interest in deepwater and harsh environment offshore projects as evidenced by the restarting of delayed projects and commencement of new drilling campaigns.

Licensing activity has also increased as energy companies look to explore and develop new prospects.

This has resulted in more tendering activity during the last half of 2022 and into 2023.

Several multi-year tenders for work in Brazil, West Africa, Asia and Australia are expected to be awarded in the first nine months of 2023.

We have recently observed that the commencement of certain projects or parts of a project is, in some cases, being delayed due to global supply chain constraints adversely impacting the timely availability of necessary equipment and supplies.

We currently believe that these temporary circumstances will gradually diminish over the short to medium term.

Offshore drilling activity is increasing in every ultra-deepwater geographic sector.

South America, the U.S.

Gulf of Mexico and, increasingly, West Africa remain key ultra-deepwater market sectors.

We have seen significant increases in dayrates for projects in the U.S.

Gulf of Mexico and, particularly, in Brazil, trends that we expect will continue.

In Norway, the largest market for harsh environment rigs, we do not expect many new projects to commence before late 2023, but we expect demand for rigs in this market will accelerate thereafter through 2026 due to previously enacted Norwegian tax incentive programs.

Given the highly regulated nature of the Norwegian market and the limited number of rigs qualified to operate in it, we anticipate an increase in dayrates commensurate with the increased demand.

We are also encouraged by projects being announced in the United Kingdom, Namibia, South Africa and Australia that require high-specification, harsh environment semisubmersibles.

As expected, these opportunities are attracting rigs currently working in Norway, thereby further reducing rig supply and potentially accelerating dayrate increases for the remaining assets in the region.

We expect global energy demand to continue to increase in both member and non-member countries of the Organization for Economic Co-operation and Development.

Forecasts indicate that non-member countries will experience the largest population growth and require the most significant improvement in living standards, compounding the effect on energy demand for the foreseeable future.

We believe that this increase in global energy demand will result in meaningful incremental demand for oil and gas.

In the context of the pronounced decline in investment in exploration and production activities over the last decade, we anticipate that a prolonged period of elevated hydrocarbon prices and investment in drilling activity will be necessary to meet this demand.

With deepwater and harsh environment fields generating robust economic returns versus other hydrocarbon sources, combined with their comparably low carbon intensity of production, we expect a significant portion of the required spending in fossil fuel development will be allocated to deepwater and harsh environment projects.

As there are now fewer high-specification offshore drilling rigs capable of operating in these markets, we believe that this increase in demand will support further improvement of dayrates.

Asset disposal and investment in unconsolidated affiliate —In February 2023, we made a cash contribution of $10 million and a non-cash contribution of the ultra-deepwater floater Ocean Rig Olympia , and related assets, with an estimated fair value of $85 million, in exchange for an equity ownership interest in Global Sea Mineral Resources NV (together with its subsidiaries, “GSR”).

In the year ended December 31, 2023, we recognized a loss of $169 million, which had no tax effect, associated with the disposal of the rig and related assets.

See “— Operating Results ,” “— Liquidity and Capital Resources—Sources and uses of liquidity ”.

Impairment and disposal of assets held for sale —In the year ended December 31, 2023, we recognized an aggregate loss of $57 million, which had no tax effect, associated with the impairment of the harsh environment floaters Paul B.

and Transocean Leader and related assets, which we determined were impaired at the time that we classified the assets as held for sale.

On February 15, 2024, we completed the sale of Paul B.

and Transocean Leader and related assets.

See “— Operating Results ” and “— Liquidity and Capital Resources—Sources and uses of liquidity .”

Drilling market —Our industry outlook is positive based upon underlying economic factors, including numerous long-term forecasts that indicate hydrocarbons will continue to be a critical source of energy for the foreseeable future, despite significant relative growth in alternative energy technologies, which remain less economical versus hydrocarbons.

Economic forecasts indicate that countries that are not members of the Organization for Economic Co-operation and Development will continue to experience population growth and improvement in living standards, which will compound the increase in energy demand for the foreseeable future.

We believe that these factors will contribute to robust demand for oil and gas.

The existing supply of oil and gas is depleting and requires replenishment.

The replacement of reserves remains critically important given the significant underinvestment during the last several years and the challenges to new exploration and production investments imposed on many industry participants by investors and the governments of oil and gas producing nations.

Additionally, energy security will remain an important geopolitical factor across Europe, the U.S.

and elsewhere with the growing understanding that hydrocarbons are not easily displaced by alternatives for much of the world’s energy needs.

With deepwater and harsh environment fields generating favorable economic returns and relatively lower carbon intensity than other hydrocarbon sources, we expect a significant portion of the required spending in fossil fuel development will continue to be allocated to deepwater and harsh environment projects.

Although the price for oil may continue to exhibit volatility in response to several factors outside of our control, including uncertainty about future output from the major oil and gas producing countries, interest rate changes, geopolitical events and global economic growth, we nevertheless expect prices to remain at levels that are robustly supportive of investment in deepwater and harsh environment exploration and development projects.

Significantly reduced offshore contracting activity during the previous downcycle has also resulted in a much smaller marketable global fleet of floating rigs available to meet the current upcycle in expected customer demands, specifically with respect to the highest specification drilling units preferred by many of our customers for their projects.

In recent quarters, marketable supply and demand for deepwater and harsh environment rigs has become more balanced.

Customers are now planning further into the future to ensure availability of rigs for their drilling programs and are signing contracts with longer lead times and durations, as well as higher dayrates.

Our customers continue to pursue offshore projects in deepwater and harsh environments where rates of return and production volumes are anticipated to be very attractive, which is reflected in the resumption of postponed projects, commencement of new drilling and exploration campaigns and extensions of current drilling campaigns.

Offshore drilling activity remains robust in every major ultra-deepwater geographic sector.

Several new exploration and development programs have commenced as our customers return their focus to reserve replacement.

Consequently, tendering activity improved meaningfully during 2023 and several multi-year tenders and direct negotiations for work in Brazil, West Africa, North America and Australia were awarded.

Many tenders remain active and are expected to be awarded in the first half of 2024.

South America, the Gulf of Mexico and, increasingly, Africa are key ultra-deepwater market sectors.

In the last two years, we observed sustained increases in dayrates for projects in the U.S.

Gulf of Mexico and Brazil.

We continue to see these trends expand to other deepwater sectors.

In Norway, the largest market for harsh environment rigs, we anticipate demand will accelerate and extend through at least 2027, primarily due to previously enacted Norwegian tax incentive programs.

Several rigs have departed the region to work in other emerging harsh environment regions that require high-specification, high-efficiency semisubmersibles.

Contract durations, including subsequent extensions, on most of these units could make them unavailable to relocate for the foreseeable future.

We believe that these and other factors affecting supply and demand for drilling rigs are likely to have a favorable influence on dayrates and contracting terms as competition increases for high-specification, high-efficiency semisubmersibles.

As we project that this increased demand for both our asset groups will be sustained in the coming years, and as there are now fewer high-specification offshore drilling rigs capable of operating in these markets, we believe this demand may prompt the reactivation of cold-stacked rigs and the delivery of remaining stranded newbuild assets.

As of February 14, 2024, our contract backlog was $9.01 billion compared to $9.40 billion as of October 18, 2023.

The risks of drilling project delays, contract renegotiations and contract terminations and cancellations have diminished as oil prices have improved and stabilized.

The risks of drilling project delays, contract renegotiations and contract terminations and cancellations remain low as oil prices have stayed at levels that are supportive of investment in deepwater and harsh environment projects.

Fleet status —We refer to the availability of our rigs in terms of the uncommitted fleet rate.

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The contractual operating dayrate may be higher than the actual dayrate we ultimately receive because an alternative contractual dayrate, such as a waiting-on-weather rate, repair rate, standby rate or force majeure rate, may apply under certain circumstances.

contractual operating dayrate may also be higher than the actual dayrate we ultimately receive because of a number of factors, including rig downtime or suspension of operations.

The contractual operating dayrate may also be higher than the actual dayrate we ultimately receive because of a number of factors, including rig downtime or suspension of operations.

In certain contracts, the actual dayrate may be reduced to zero if, for example, repairs extend beyond a stated period of time.

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Harsh environment floaters

Midwater floaters

Total fleet average daily revenue

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The average daily revenue may be affected by incentive performance bonuses or penalties or demobilization fee revenues.

Our total fleet average daily revenue is affected by the mix of rig classes being operated.

Midwater floaters, for example, which we no longer operate, are typically contracted at lower dayrates compared to ultra-deepwater floaters and harsh environment floaters.

Revenues for a contracted newbuild unit are included in the calculation when the rig commences operations upon acceptance by the customer.

We remove rigs from the calculation upon disposal or classification as held for sale, unless we continue to operate rigs subsequent to sale, in which case we remove the rigs at the time of completion or novation of the contract.

Revenues for a newbuild unit are included in the calculation when the rig commences operations upon acceptance by the customer.

We remove a rig from the calculation upon disposal or classification as held for sale, unless we continue to operate the rig, in which case we remove the rig upon completion or novation of the contract.

Revenue efficiency —We believe revenue efficiency measures our ability to ultimately convert our contract backlog into revenues.

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Harsh environment floaters

Midwater floaters

Total fleet average revenue efficiency

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Harsh environment floaters

Midwater floaters

Total fleet average rig utilization

Our rig utilization rate declines as a result of idle and stacked rigs and during shipyard and mobilization periods to the extent these rigs are not earning revenues.

Our rig utilization rate declines as a result of idle and stacked rigs and during shipyard, contract preparation and mobilization periods.

We include newbuilds in the calculation when the rigs commence operations upon acceptance by the customer.

We remove rigs from the calculation upon disposal or classification as held for sale.

Accordingly, our rig utilization can increase when we remove idle or stacked units from our fleet.

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General and administrative expense

Loss on impairment of assets

Loss on disposal of assets, net

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Interest expense, net of amounts capitalized

Gain on retirement of debt

Gain (loss) on retirement of debt

Loss before income tax expense

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Contract drilling revenues —Contract drilling revenues increased for the year ended December 31, 2023, compared to the year ended December 31, 2022, primarily due to the following:

(a) approximately $25 million resulting from Deepwater Atlas , which was placed into service in October 2022, (b) approximately $20 million resulting from increased rig utilization, (c) approximately $10 million resulting from higher early termination revenues and (d) approximately $10 million resulting from higher reimbursable revenues.

These increases were partially offset by (a) approximately $40 million resulting from lower dayrates and (b) approximately $5 million resulting from lower fleet revenue efficiency.

Costs and expenses —Operating and maintenance costs and expenses decreased for the year ended December 31, 2022, compared to the year ended December 31, 2021, primarily due to the following:

(a) approximately $35 million resulting from the effect of favorable exchange rates, (b) approximately $28 million resulting from the allowance for excess materials and supplies due to the identification, in the year ended December 31, 2021, of parts that were in excess of our expected future usage, (c) approximately $15 million resulting from reduced rig out-of-service maintenance costs and (d) approximately $5 million incurred on rigs sold in the year ended December 31, 2021.

These decreases were partially offset by the following increases:

(a) approximately $25 million resulting from personnel compensation increases, (b) approximately $20 million resulting from increased rig operating activities, (c) approximately $15 million resulting from Deepwater Atlas and (d) approximately $10 million resulting from higher customer reimbursable costs.

Depreciation and amortization expense decreased for the year ended December 31, 2022, compared to the year ended December 31, 2021, primarily due to (a) approximately $17 million resulting from assets that had reached the end of their useful lives or had been retired, partially offset by (b) approximately $10 million of increased depreciation associated with our newbuild ultra-deepwater drillship and other property and equipment placed into service in the year ended December 31, 2022.

General and administrative expense increased for the year ended December 31, 2022, compared to the year ended December 31, 2021, primarily due to the following:

(a) approximately $8 million of increased costs for information systems and technology and (b) approximately $3 million of increased costs for strategy and innovation.

Disposal of assets —In the year ended December 31, 2021, we recognized an aggregate net loss of $57 million, primarily associated with the sale of a harsh environment floater and related assets.

In the years ended December 31, 2022 and 2021, we recognized an aggregate net loss of $10 million and $5 million, respectively, associated with the disposal of assets unrelated to rig sales.

(a) approximately $210 million resulting from higher average daily revenues, (b) approximately $190 million resulting from the operations of our newbuild ultra-deepwater floaters Deepwater Atlas and Deepwater Titan placed into service in the two-year period ended December 31, 2023, (c) approximately $25 million resulting from slightly improved efficiency for the fleet, (d) approximately $25 million resulting from higher reimbursement revenues and (e) approximately $10 million resulting from increased early termination revenues.

These increases were partially offset by the following:

(a) approximately $180 million resulting from reduced utilization, primarily for our harsh environment floaters that were under mobilization or contract preparation for their next contract and (b) approximately $25 million resulting from cold stacking Deepwater Nautilus .

Costs and expenses —Operating and maintenance costs and expenses increased for the year ended December 31, 2023, compared to the year ended December 31, 2022, primarily due to the following:

(a) approximately $140 million resulting from reactivation and contract preparation, (b) approximately $85 million resulting from our two newbuild ultra-deepwater floaters placed into service, (c) approximately $55 million resulting from the effect of inflation on personnel and maintenance costs, (d) approximately $40 million resulting from various litigation, customs duties and indirect taxes and (e) approximately $25 million resulting from higher reimbursable costs.

These increases were partially offset by the following:

(a) approximately $35 million resulting from cold stacking Deepwater Nautilus and (b) approximately $15 million resulting from the favorable effect of currency exchange rates on personnel costs.

Depreciation and amortization expense increased for the year ended December 31, 2023, compared to the year ended December 31, 2022, primarily due to (a) $48 million of increased depreciation associated with our newbuild ultra-deepwater floaters and other property and equipment placed into service since December 2022, partially offset by (b) $23 million of reduced depreciation resulting from the disposal of one rig and the classification of two rigs as held for sale and (c) approximately $12 million of reduced depreciation resulting from assets that had reached the end of their useful lives or had been retired.

General and administrative costs and expenses increased for the year ended December 31, 2023, compared to the year ended December 31, 2022, primarily due to the following:

(a) approximately $16 million resulting from increased personnel costs, partially offset by (c) approximately $8 million resulting from reduced innovation costs and (d) approximately $4 million resulting from reduced legal and professional fees.

Loss on impairment or disposal of assets —In the year ended December 31, 2023, we recognized a loss associated with the impairment of two harsh environment floaters, which we determined were impaired at the time we classified them as held for sale.

In the year ended December 31, 2023, we recognized a loss of $169 million associated with our non-cash contribution of Ocean Rig Olympia and related assets in exchange for an equity ownership interest in GSR.

In the years ended December 31, 2023 and

2022, we recognized an aggregate net loss of $14 million and $10 million, respectively, associated with the disposal of assets unrelated to rig sales.

Other income and expense —Interest expense, net of amounts capitalized, increased in the year ended December 31, 2023, compared to the year ended December 31, 2022, primarily due to the following:

(a) an increase of $157 million resulting from the fair value adjustment of the bifurcated compound exchange feature embedded in the 4.625% Senior Guaranteed Exchangeable Bonds and (b) an increase of $15 million resulting from borrowings under the Shipyard Loans, partially offset by (c) a decrease of $41 million resulting from

debt repaid as scheduled or early retired and (d) a decrease of $23 million resulting from increased interest capitalized for our newbuild construction projects.

In the year ended December 31, 2022, we recognized an aggregate net gain on the retirement of debt, primarily associated with the retirement of $116 million aggregate principal amount of debt as a result of the 2022 Private Exchange.

In the year ended December 31, 2021, we recognized an aggregate net gain on the retirement of debt, primarily associated with the retirement of $323 million aggregate principal amount of debt as a result of the private exchanges completed in February 2021 (the “2021 Private Exchange”).

Other expense, net, increased in the year ended December 31, 2022, compared to the year ended December 31, 2021, primarily due to the following:

(a) income of $32 million resulting from settlement of litigation recognized in the year ended December 31, 2021, (b) increased loss of $11 million related to our investment in Nauticus Robotics, Inc.

(“Nauticus”), (c) reduced income of $7 million related to our dual-activity patent, (d) increased losses of $7 million resulting from net changes to currency exchange rates, and (e) reduced income of $5 million related to the non-service components of net periodic benefit income, partially offset by (f) reduced losses of $33 million related to our investment in Orion Holdings (Cayman) Limited (“Orion”).

(a) $189 million resulting from debt issued in the two-year period ended December 31, 2023 and (b) $34 million resulting from reduced interest costs capitalized for our newbuild construction program, partially offset by (c) $113 million resulting from debt repaid as scheduled or early retired and (d) $30 million resulting from the fair value adjustment of the bifurcated compound exchange feature embedded in the indenture governing the 4.625% Senior Guaranteed Exchangeable Bonds.

In the year ended December 31, 2023, we recognized a net loss on retirement of debt, primarily associated with the early retirement of $1.38 billion aggregate principal amount of our debt securities.

In the year ended December 31, 2022, we recognized a net gain on the retirement of debt, primarily associated with the early retirement of $116 million aggregate principal amount of our debt securities in connection with exchange and purchase agreements.

Other income net, increased in the year ended December 31, 2023, compared to the year ended December 31, 2022, primarily due to the following:

(a) an increased gain of $18 million resulting from net changes to currency exchange rates, (b) increased income of $17 million associated with our dual-activity patent and (c) increased income of $8 million related to the non-service components of net periodic benefit income, partially offset by (e) a loss of $27 million associated with a payment of cash or the issuance of additional shares to certain holders that elected to exercise their exchanges rights for the 4.00% Senior Guaranteed Exchangeable Bonds and the 4.625% Senior Guaranteed Exchangeable Bonds in the year ended December 31, 2023.

Income tax expense —In the years ended December 31, 2023 and 2022, our effective tax rate was (1.4) percent and (10.4) percent, respectively, based on loss before income tax expense.

In the years ended December 31, 2022 and 2021, the aggregate effect of discrete period tax items was a net tax benefit of $19 million and net tax expense of $47 million, respectively.

In the years ended December 31, 2023 and 2022, the aggregate effect of discrete period tax items was a net tax benefit of $74 million and $19 million, respectively.

In the year ended December 31, 2023, such discrete items included settlements and expirations of various uncertain tax positions, changes to valuation allowances and changes to deferred taxes due to new rig operations.

In the year ended December 31, 2022, such discrete items included settlement and expiration of various uncertain tax positions, changes to valuation allowances, operational restructuring and gains due to exchange rate changes.

In the year ended December 31, 2021, such discrete items included the effect of tax law changes in Switzerland and jurisdictional ownership changes of certain assets, loss on disposal of assets, expiration and settlements of various uncertain tax positions, gain on retirement of debt, changes to our allowance for excess materials and loss on impairment of an equity investment.

In the years ended December 31, 2023 and 2022, our effective tax rate, excluding discrete items, was (13.3) percent and (13.6) percent, respectively, based on loss before income tax expense.

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With respect to the effective tax rate calculation for the year ended December 31, 2023, a significant portion of our income tax expense was generated in countries in which income taxes are imposed or treated to be imposed on gross revenues, with the most significant of these countries being Angola and India.

Conversely, during this period, the most significant countries in which we incurred income taxes that were based on income before income tax included the U.S., Hungary and Switzerland.

Conversely, the countries in which we incurred the most significant income taxes during this period that were based on income before income tax include the U.S., Hungary, Brazil, Cyprus, Australia, Norway and Switzerland.

Our rig operating structures further complicate our tax calculations, especially in instances where we have more than one operating structure for the taxing jurisdiction and, thus, more than one method of calculating taxes depending on the operating structure utilized by the rig under the contract.

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Sources and uses of cash

At December 31, 2022, we had $683 million in unrestricted cash and cash equivalents and $308 million in restricted cash and cash equivalents.

In the year ended December 31, 2022, our primary sources of cash were net cash provided by our operating activities, net cash proceeds from the issuance of shares under the ATM Program and net cash proceeds from the issuance of debt.

In the year ended December 31, 2023, our primary sources of cash were net cash proceeds from issuance of debt and net cash provided by our operating activities.

Our primary uses of cash were debt repayments and capital expenditures.

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Changes in operating assets and liabilities, net

Net cash provided by operating activities decreased primarily due to (a) reduced cash collected from customers, (b) increased cash paid to employees and (c) reduced cash refunds for income taxes, partially offset by (d) reduced cash paid for interest.

Net cash provided by operating activities decreased primarily due to (a) increased disbursements made in connection with contract preparation and mobilization activities for rigs under new or upcoming contracts, (b) increased cash paid for interest and (c) increased cash paid to employees, partially offset by (d) reduced cash paid for income taxes.

Years ended December 31,

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Proceeds from disposal of assets, net

Net cash used in investing activities increased primarily due to (a) increased capital expenditures related to our newbuild construction program and (b) increased investments in equity of unconsolidated affiliates, including Liquila, Ocean Minerals LLC and Orion, partially offset by (c) reduced investment in loans to unconsolidated affiliates.

Cash acquired in acquisition of unconsolidated affiliate

Net cash used in investing activities decreased primarily due to (a) reduced capital expenditures associated with our newbuild construction program and (b) reduced cash invested in the equity and debt of our unconsolidated affiliates, partially offset by (c) increased capital expenditures associated with maintenance, reactivation and contract preparation activities.

Years ended December 31,

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Repayments of debt

Proceeds from issuance of shares, net of issue costs

Proceeds from issuance of debt, net of issue costs

Proceeds from issuance of shares, net of issue costs

Proceeds from issuance of warrants, net of issue costs

Net cash used in financing activities decreased primarily due to (a) net cash proceeds from the issuance of the 4.625% Senior Guaranteed Exchangeable Bonds in the year ended December 31, 2022, (b) increased net cash proceeds from the issuance of shares under the ATM Program and (c) decreased cash used to repay debt.

Net cash provided by financing activities increased primarily due to (a) net cash proceeds from the issuance of $1.175 billion aggregate principal amount of 8.75% Senior Secured Notes, $525 million aggregate principal amount of 8.375% Senior Secured Notes and $325 million aggregate principal amount of 8.00% Senior Secured Notes in the year ended December 31, 2023, and (b) decreased cash used to repay debt in scheduled installments, partially offset by (c) early repayments of $1.38 billion aggregate principal amount of certain of our debt securities in the year ended December 31, 2023 compared to early repayments of $77 million aggregate principal amount in the prior year.

Sources and uses of liquidity

Overview —We expect to use existing unrestricted cash balances, internally generated cash flows, borrowings under our Secured Credit Facility or proceeds from the disposal of assets or the issuance of debt or shares to fulfill anticipated near-term obligations, which may include capital expenditures, working capital and other operational requirements, scheduled debt maturities or other payments.

We may consider establishing additional financing arrangements with banks or other capital providers, and subject to market conditions and other factors, we may be required to provide collateral for any such future financing arrangements.

We have generated positive cash flows from operating activities over recent years and, although we cannot provide assurances, we currently expect that such cash flows will continue to be positive over the next year.

Among other factors, if general economic, financial, industry or business conditions deteriorate, if we experience poor operating results, or if we incur costs to, for example, reactivate, stack or otherwise assure the marketability of our fleet, our cash flows from operations may be reduced or negative.

We continue to evaluate additional potential liability management transactions in connection with our ongoing efforts to prudently manage our capital structure and improve our liquidity.

In each case subject to then-existing market conditions and our expected liquidity needs, among other factors, we may continue to use existing unrestricted cash balances, internally generated cash flows and proceeds from asset sales to pursue liability management transactions, including among others, purchasing or exchanging one or more existing series of our debt securities in the open market, in privately negotiated transactions, through tender offers or through exchange offers.

Any future purchases, exchanges or other transactions may be on the same terms or on terms that are more or less favorable to holders than the terms of any prior transaction, including our previous exchange transactions.

Overview —We expect to use existing unrestricted cash balances, cash flows from operating activities, borrowings under our Secured Credit Facility or proceeds from the disposal of assets or the issuance of debt or shares to fulfill anticipated near-term obligations, which may include capital expenditures, working capital and other operational requirements, scheduled debt maturities or other payments.

At December 31, 2023, we had $762 million in unrestricted cash and cash equivalents and $233 million in restricted cash and cash equivalents.

We have generated positive cash flows from operating activities over recent years and, although we cannot provide assurances, we expect that such cash flows will continue to be positive over the next year.

For example, among other factors, if we incur costs for reactivation or contract preparation of multiple rigs or to otherwise assure the marketability of our fleet or general economic, financial, industry or business conditions deteriorate, our cash flows from operations may be reduced or negative.

Additionally, we have a bank credit agreement for a credit facility, secured by, among other things, a lien on nine of our ultra-deepwater floaters and two of our harsh environment floaters (as amended from time to time, the “Secured Credit Facility”).

Our Secured Credit Facility provides us with a borrowing capacity of $600 million through its scheduled maturity on June 22, 2025, and contains restrictive covenants, including a minimum guarantee coverage ratio of 3.0 to 1.0, a minimum collateral coverage ratio of 2.1 to 1.0 and a minimum liquidity requirement of $500 million, among others.

For more information about the restrictions in our Secured Credit Facility and maturity triggers thereof, as well as on our scheduled debt maturities in 2024 and beyond, see Notes to Consolidated Financial Statements— Note 9—Debt .

Although we currently anticipate relying on these sources of liquidity, including cash flows from operating activities and borrowings under our Secured Credit Facility, among others, we may in the future consider establishing additional financing arrangements with banks or other capital providers, including shipyard loans, and subject to market conditions and other factors, we may be required to provide collateral for any such future financing arrangements.

Additionally, we have from time to time relied on issuances of equity or equity-linked securities.

For more information about our issuances of equity securities, see Notes to Consolidated Financial Statements— Note 9—Debt and Notes to Consolidated Financial Statements— Note 14—Equity .

Debt and equity markets —From time to time, we seek to access the capital markets, including with respect to potential liability management transactions.

For example, during the three-year period ended December 31, 2023, we completed multiple debt and equity transactions, including the redemption, exchanges and retirement of existing debt, in connection with our ongoing efforts to prudently manage our capital structure and improve our liquidity position.

Subject to then-existing market conditions and our expected liquidity needs, among other factors, we may use existing unrestricted cash balances, our cash flows from operating activities, or proceeds from asset sales to pursue liability management transactions, including among others, purchasing or exchanging any of our debt or equity-linked securities in

the open market, in privately negotiated transactions, or through tender or exchange offers, or by redeeming any of our outstanding debt securities pursuant to the terms of the applicable governing document, if applicable.

Any future purchases, exchanges or other transactions may be on the same terms or on terms that are more or less favorable to holders than the terms of any prior transaction.

We can provide no assurance as to which, if any, of these alternatives, or combinations thereof, we may choose to pursue in the future, if at all, or as to the timing with respect to any future transactions.

For more information about our previous debt repayment, redemption and retirement transactions during the three-year period ended December 31, 2023, see Notes to Consolidated Financial Statements— Note 9—Debt .

Our ability and willingness to access the debt and equity markets is a function of a variety of factors, including, among others, general economic, industry or market conditions, market perceptions of us and our industry and credit rating agencies’ views of our debt.

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In addition to our potential sources of funding, the effects of such global events could impact our liquidity or need to alter our allocation or sources of capital, implement further cost reduction measures and change our financial strategy.

Additionally, the rating of the majority of our long-term debt, which is below investment grade, is causing us to experience increased fees and interest rates under our Secured Credit Facility and agreements governing certain of our senior notes.

Additionally, the rating of our long-term debt is below investment grade, which is causing us to experience increased fees and interest rates under our Secured Credit Facility and indentures governing certain of our senior notes.

Future downgrades may further restrict our ability to access the debt market for sources of capital and may negatively impact the cost of such capital at a time when we would like, or need, to access such markets, which could have an impact on our flexibility to react to changing economic and business conditions.

Debt issuances —In January 2023, we issued $525 million aggregate principal amount of 8.375% Senior Secured Notes, and we received $515 million aggregate cash proceeds, net of issue costs.

The 8.375% Senior Secured Notes are secured by the assets and earnings associated with the ultra-deepwater floater Deepwater Titan and the equity of the wholly owned subsidiary that owns or operates

the collateral rig.

Additionally, we are required to maintain certain balances in a restricted cash account to satisfy debt service requirements.

We may redeem all or a portion of the 8.375% Senior Secured Notes on or prior to February 1, 2025 at a price equal to 100 percent of the aggregate principal amount plus a make-whole premium, and subsequently, at specified redemption prices.

In January 2023, we issued $1.175 billion aggregate principal amount of 8.75% Senior Secured Notes, and we received $1.157 billion aggregate cash proceeds, net of issue costs.

The 8.75% Senior Secured Notes are fully and unconditionally guaranteed on an unsecured basis by Transocean Ltd.

and on a limited senior secured basis by certain of our wholly owned subsidiaries.

The 8.75% Senior Secured Notes are secured by a lien on the ultra-deepwater floaters Deepwater Pontus , Deepwater Proteus and Deepwater Thalassa and the harsh environment floaters Transocean Enabler and Transocean Encourage , together with certain related assets.

Additionally, we are required to maintain certain balances in a restricted cash account to satisfy debt service requirements.

Early debt retirement —In January 2023, in connection with the issuance of the 8.75% Senior Secured Notes, we made an aggregate payment of $1.156 billion, including a make-whole premium, to redeem the remaining outstanding $311 million, $240 million, $250 million, and $336 million aggregate principal amount of the 5.875% Senior Secured Notes, the 7.75% Senior Secured Notes, the 6.25% Senior Secured Notes and the 6.125% Senior Secured Notes, respectively.

In January 2022, we made an aggregate cash payment of $18 million to repay the then outstanding equivalent aggregate principal amount of the 5.52% Senior Secured Notes, and as a result, the noteholders subsequently released all liens, the mortgage on the secured rig and $106 million from restricted cash accounts.

In July 2022, we made an aggregate cash payment of $27 million to redeem the then outstanding equivalent aggregate principal amount of the 3.80% Senior Notes.

In October 2022, the harsh environment floater Transocean Equinox , which is held as collateral for the 5.375% Senior Secured Notes, concluded its drilling contract following a notice received from the customer in September 2022.

As required under the indenture governing such notes, in January 2023, we made a cash payment of $121 million to redeem an equivalent aggregate principal amount of the outstanding securities.

Additionally, in January 2023, the trustee notified holders of our intent to redeem the remaining outstanding $122 million aggregate principal amount of notes for an equivalent aggregate cash payment, expected to be made on February 24, 2023.

In the year ended December 31, 2021, we made an aggregate cash payment of $79 million to repurchase in the open market an equivalent aggregate principal amount of our debt securities.

Shipyard financing arrangement —We established the Shipyard Loans to finance all or a portion of the final payments expected to be owed to the shipyard upon delivery of the ultra-deepwater floaters Deepwater Atlas and Deepwater Titan .

In June 2022, we borrowed $349 million under one of the Shipyard Loans and made a cash payment of $46 million to satisfy the final milestone payment due upon delivery of Deepwater Atlas .

In December 2022, we borrowed $90 million under the other Shipyard Loan and made a cash payment of $325 million to satisfy the final milestone payment due upon delivery of Deepwater Titan .

The Shipyard Loans are guaranteed by Transocean Inc.

Borrowings under the Shipyard Loan for Deepwater Atlas are secured by, among other security, a lien on the rig.

Borrowings under the Shipyard Loan for Deepwater Titan are unsecured.

We have the right to prepay the outstanding borrowings, in full or in part, without penalty.

The Shipyard Loans contain covenants that, among other things, limits the ability of the subsidiary owners of the drilling rigs to incur certain types of additional indebtedness or make certain additional commitments or investments.

Debt exchanges —In September 2022, we issued $300 million aggregate principal amount of 4.625% Senior Guaranteed Exchangeable Bonds in connection with exchange and purchase agreements.

Pursuant to the exchange and purchase agreements, we exchanged (a) $73 million aggregate principal amount of the 0.50% Exchangeable Senior Bonds for (i) $73 million aggregate principal amount of the 4.625% Senior Guaranteed Exchangeable Bonds and (ii) 6.7 million warrants to purchase Transocean Ltd.

shares, and (b) $43 million aggregate principal amount of the 7.25% Senior Notes for $39 million aggregate principal amount of the 4.625% Senior Guaranteed Exchangeable Bonds.

Additionally, we sold $188 million aggregate principal amount of the 4.625% Senior Guaranteed Exchangeable Bonds and issued 15.5 million warrants to purchase Transocean Ltd.

shares for aggregate net cash proceeds of $188 million.

On or after March 30, 2026, we may redeem for cash all or a portion of the 4.625% Senior Guaranteed Exchangeable Bonds at a price equivalent to the aggregate principal amount to be redeemed if the closing price of our shares has been greater than 115 percent of the exchange price for a period of at least 20 trading days.

In February 2021, we issued $294 million aggregate principal amount of the 4.00% senior guaranteed exchangeable bonds due December 2025 (the “4.00% Senior Guaranteed Exchangeable Bonds”) and made an aggregate cash payment of $11 million in the 2021 Private Exchange for $323 million aggregate principal amount of the 0.50% Exchangeable Senior Bonds.

The 4.00% Senior Guaranteed Exchangeable Bonds are guaranteed by Transocean Ltd.

and the same subsidiaries of Transocean Inc.

that guarantee the 2.50% senior guaranteed exchangeable bonds due January 2027 (the “2.50% Senior Guaranteed Exchangeable Bonds”) and the 11.50% senior guaranteed notes due January 2027.

The indenture that governs the 4.00% Senior Guaranteed Exchangeable Bonds also requires such bonds to be repurchased upon the occurrence of certain fundamental changes and events, at specified prices depending on the particular fundamental change or event, which include changes and events related to certain (i) change of control events applicable to Transocean Ltd.

or Transocean Inc., (ii) the failure of our shares to be listed or quoted on a national securities exchange and (iii) specified tax matters.

The 4.00% Senior Guaranteed Exchangeable Bonds may be exchanged at any time prior to the close of business on the second business day immediately preceding the maturity date at a current exchange rate of 190.4762 Transocean Ltd.

shares per $1,000 note, which implies an exchange price of $5.25 per share, subject to adjustment upon the occurrence of certain events, and any such exchange may be settled in cash, Transocean Ltd.

shares or a combination of cash and Transocean Ltd.

shares, at our election.

Share issuance —We intend to use the net proceeds from the sale of our shares under the ATM Program for general corporate purposes, which may include, among other things the repayment or refinancing of indebtedness and the funding of working capital, capital expenditures, investments and additional balance sheet liquidity.

In the years ended December 31, 2022 and 2021, we received aggregate cash proceeds of $263 million and $158 million, respectively, net of issue costs, for the aggregate sale of 61.0 million shares and 36.1 million shares, respectively, under the ATM Program.

Secured Credit Facility —In July 2022, we amended the bank credit agreement for our Secured Credit Facility to, among other things, (i) extend the maturity date from June 22, 2023 to June 22, 2025, (ii) reduce the borrowing capacity from $1.33 billion to $774 million through June 22, 2023, and thereafter reduce the borrowing capacity to $600 million through June 22, 2025 and (iii) replace our ability to borrow under the Secured Credit Facility at the reserve adjusted London Interbank Offered Rate plus a margin (the “Secured Credit Facility Margin”) with the ability to borrow under the Secured Credit Facility at a forward looking term rate based on the secured overnight financing rate (“Term SOFR”) plus the Secured Credit Facility Margin and a Term SOFR spread adjustment of 0.10 percent.

The Secured Credit Facility is subject to permitted extensions and certain early maturity triggers, including if on any date the aggregate amount of scheduled principal repayments of indebtedness, with certain exceptions, due within 91 days thereof is equal to or in excess of $200 million and available cash is less than $250 million.

The amended secured credit facility also permits us to increase the aggregate amount of commitments by up to $250 million.

The Secured Credit Facility is guaranteed by Transocean Ltd.

and certain wholly owned subsidiaries.

The Secured Credit Facility is secured by, among other things, a lien on nine of our ultra-deepwater floaters and two of our harsh environment floaters.

The Secured Credit Facility contains covenants that, among other things, include maintenance of a minimum guarantee coverage ratio of 3.0 to 1.0, a minimum collateral coverage ratio of 2.1 to 1.0, a maximum debt to capitalization ratio of 0.60 to 1.00 and minimum liquidity of $500 million.

The Secured Credit Facility also restricts the ability of Transocean Ltd.

and certain of our subsidiaries to, among other things, merge, consolidate or otherwise make changes to the corporate structure, incur liens, incur additional indebtedness, enter into transactions with affiliates and pay dividends and other distributions.

In order to utilize the Secured Credit Facility, we must, at the time of the borrowing request, be in full compliance with the terms and conditions of the Secured Credit Facility and make certain representations and warranties, including with respect to compliance with laws and solvency, to the lenders.

Repayment of borrowings under the Secured Credit Facility are subject to acceleration upon the occurrence of an event of default.

Under the agreements governing certain of our debt and finance lease, we are also subject to various covenants, including restrictions on creating liens, engaging in sale/leaseback transactions and engaging in certain merger, consolidation or reorganization transactions.

A default under our public debt indentures, the agreements governing our senior secured notes, our finance lease contract or any other debt owed to unaffiliated entities that exceeds $125 million could trigger a default under the Secured Credit Facility and, if not waived by the lenders, could cause us to lose access to the Secured Credit Facility.

At February 14, 2023, we had no borrowings outstanding, $6 million of letters of credit issued, and we had $767 million of available borrowing capacity under the Secured Credit Facility.

Equity and debt investments —In the years ended December 31, 2022 and 2021, we made cash investments of $25 million and $34 million, respectively, in the equity and debt of certain unconsolidated affiliates, such as Orion and Liquila, that own drilling units.

In the year ended December 31, 2022, we made a cash contribution of $15 million to Liquila, which was used by Liquila to make the initial payment to the shipyard to acquire the ultra-deepwater drillship Deepwater Aquila .

Additionally, in the year ended December 31, 2022, we made an aggregate cash contribution of $10 million to our equity investment in Orion, the company that, through its wholly owned subsidiary, owns the harsh environment floater Transocean Norge .

In June 2021, we agreed to participate in a financing arrangement for Orion, at a rate of 33 percent, equivalent to our ownership interest in Orion, and made a cash investment of $33 million in the loan facility.

In February 2023, we agreed to make an investment for a noncontrolling ownership interest in Global Sea Mineral Resources, a Belgian company and leading developer of nodule collection technology, which is engaged in the development and exploration of deep-sea polymetallic nodules that contain metals critical to the growing renewable energy market.

In addition to a cash investment of $10 million, we agreed to contribute the ultra-deepwater drillship Ocean Rig Olympia , and we expect to contribute engineering services in the future.

In the year ended December 31, 2022, we made an aggregate cash investment of $22 million in the equity and debt of certain other unconsolidated affiliates that are involved in researching and developing technology to improve efficiency, reliability, sustainability and safety in drilling and other activities.

We hold an equity investment in Nauticus, a company that develops highly sophisticated, ultra-sustainable marine robots and intelligent software to power them, which, following the completion of a business combination with a publicly traded special purpose acquisition company in September 2022, became a publicly listed company, the common shares of which trade on the NASDAQ exchange under the ticker symbol “KITT.” Additionally, we hold equity and debt investments in Ocean Minerals LLC, the parent company of Moana Minerals Ltd.

(“Moana”), a Cook Islands subsea resource development company that intends to extract polymetallic nodules.

We retain a priority right to provide deepwater nodule extraction services to Moana, and together with Moana and others, we intend to extract the nodules in an environmentally responsible way by employing existing and developing new technologies.

Exchangeable bonds —The indentures that govern the 4.00% Senior Guaranteed Exchangeable Bonds, 2.50% senior guaranteed exchangeable bonds due January 2027 and the 4.625% Senior Guaranteed Exchangeable Bonds each requires such bonds to be repurchased upon the occurrence of certain fundamental changes and events, at specified prices depending on the particular fundamental change or event, which include changes and events related to certain (i) change of control events applicable to Transocean Ltd.

or Transocean Inc., (ii) the failure of our shares to be listed or quoted on a national securities exchange and (iii) specified tax matters.

Additionally, the 4.00% Senior Guaranteed Exchangeable Bonds and the 4.625% Senior Guaranteed Exchangeable Bonds may be exchanged at any time prior to the close of business on the second business day immediately preceding the maturity date at the effective

exchange rate, and any such exchange may be settled in cash, Transocean Ltd.

shares or a combination of cash and Transocean Ltd.

shares, at our election.

Share repurchase program —In May 2009, at our annual general meeting, our shareholders approved and authorized our board of directors, at its discretion, to repurchase for cancellation any amount of our shares for an aggregate purchase price of up to CHF 3.50 billion.

On February 12, 2010, our board of directors authorized our management to implement the share repurchase program.

At December 31, 2022, the authorization remaining under the share repurchase program was for the repurchase of our outstanding shares for an aggregate purchase price of up to CHF 3.24 billion, equivalent to $3.51 billion.

We intend to fund any repurchases using available cash balances and cash from operating activities.

The share repurchase program could be suspended or discontinued by our board of directors or company management, as applicable, at any time.

We may decide, based on our ongoing capital requirements, the price of our shares, regulatory and tax considerations, cash flow generation, the amount and duration of our contract backlog, general market conditions, debt rating considerations and other factors, that we should retain cash, reduce debt, make capital investments or acquisitions or otherwise use cash for general corporate purposes.

Decisions regarding the amount, if any, and timing of any share repurchases will be made from time to time based on these factors.

Any repurchased shares under the share repurchase program would be held by us for cancellation by the shareholders at a future general meeting of shareholders.

See “ Item 5.

Market for Registrant’s Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities—Shareholder Matters .”

Contractual obligations —At December 31, 2022, our contractual obligations stated at face value, were as follows:

Years ending December 31,

(in millions)

Interest on debt

Finance lease liability

Operating lease liabilities

Purchase obligations

Service agreement obligations

As of December 31, 2022, our defined benefit pension and other postemployment plans represented an aggregate liability of $174 million, representing the aggregate projected benefit obligation, net of the aggregate fair value of plan assets.

The carrying amount of this liability is influenced by, among others, significant current and future assumptions, funding contributions, returns on plan assets, participant demographics, and plan amendments.

We excluded this amount from our contractual obligations presented above due to the uncertainties resulting from these factors and because the amount is not representative of future liquidity requirements.

See Notes to Consolidated Financial Statements—Note 9—Postemployment Benefit Plans .

As of December 31, 2022, we had unrecognized tax benefits of $471 million, including interest and penalties, against which we recorded net operating loss deferred tax assets of $383 million, resulting in net unrecognized tax benefits of $88 million, including interest and penalties, that upon reversal would favorably impact our effective tax rate.

Although a portion of these could settle or reverse in the coming year, we have excluded this amount from our contractual obligations presented above due to the high degree of uncertainty regarding the timing of future cash outflows associated with these liabilities and the period in which any cash settlement may be made with the respective taxing authorities.

See Notes to Consolidated Financial Statements—Note 10—Income Taxes .

Other commercial commitments —We have other commercial commitments, such as standby letters of credit and surety bonds that guarantee our performance as it relates to our drilling contracts, insurance, customs, tax and other obligations in various jurisdictions.

The cash obligations of these commitments, which are primarily geographically concentrated in Brazil, are not normally called because we typically comply with the underlying performance requirements.

Standby letters of credit are issued under various committed and uncommitted credit lines, some of which require cash collateral.

At December 31, 2022, the aggregate cash collateral held by banks for letters of credit and surety bonds was $7 million.

At December 31, 2022, these obligations stated in U.S.

dollar equivalents and their time to expiration were as follows:

Years ending December 31,

(in millions)

Standby letters of credit

We have established a wholly owned captive insurance company to insure various risks of our operating subsidiaries.

Access to the cash and cash equivalents of the captive insurance company may be limited due to local regulatory restrictions.

At December 31, 2022, the captive insurance company held cash and cash equivalents of $44 million, and such balance is expected to range from $25 million to $75 million through December 31, 2023.

The balance of the cash and cash equivalents held by the captive insurance company varies, depending on (i) premiums received and (ii) the timing and magnitude of claims and dividends paid by the captive insurance company.

Drilling fleet

Expansion —From time to time, we review possible acquisitions of businesses and drilling rigs, as well as noncontrolling interests in other companies, and we may make significant future capital commitments for such purposes.

Drilling fleet —From time to time, we review possible acquisitions of businesses and drilling rigs, as well as noncontrolling ownership interests in other companies, and we may make significant future capital commitments for such purposes.

We may also consider investments related to major rig upgrades, new rig construction, or the acquisition of a rig under construction.

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Our failure to subsequently secure drilling contracts in these instances, if not already secured, could have an adverse effect on our results of operations or cash flows.

In the year ended December 31, 2022, we made a cash contribution of $15 million to Liquila, which represented our proportionate contribution that was used to make the initial payment to the shipyard to acquire the newbuild ultra-deepwater drillship Deepwater Aquila for a purchase price of approximately $200 million.

The seventh generation, high-specification drillship is designed to be equipped with our patented dual activity, a 1,400 short-ton hookload, large deck space, high load capacities, large deck space and will be dual-stack ready.

We maintain the exclusive right to market and manage the operations of the rig, which is expected to be delivered from the shipyard in the third quarter of 2023.

In the years ended December 31, 2023 and 2022, we made capital expenditures of $427 million and $717 million, respectively, including $331 million and $669 million, respectively, for our newbuild construction projects.

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(in millions)

Deepwater Atlas (a)

Deepwater Aquila (a)

Deepwater Titan (b)

(a) In October 2022, we completed construction of the ultra-deepwater drillship Deepwater Atlas .

In June 2022, we borrowed $349 million under the Shipyard Loan and made a cash payment of $46 million to satisfy the final milestone payment due upon delivery of Deepwater Atlas .

We recorded the Shipyard Loan, net of imputed interest, and corresponding non-cash capital additions of $300 million.

In October 2022, the rig commenced operations in the first of two phases using a 15,000 pounds per square inch blowout preventer.

Before the start of the second phase, the rig will undergo installation of a 20,000 pounds per square inch blowout preventer and related equipment, which is expected to be commissioned in the third quarter of 2023.

(b) Deepwater Titan is an ultra-deepwater drillship under construction.

In December 2022, we took delivery from Jurong Shipyard Pte Ltd.

in Singapore and borrowed $90 million under the Shipyard Loan and made a cash payment of $325 million to satisfy the final milestone payment due upon delivery of Deepwater Titan .

We recorded the Shipyard Loan, net of imputed interest, and corresponding non-cash capital additions of $82 million.

The rig is expected to commence operations under its drilling contract in the second quarter of 2023.

The projected capital additions include estimates for the mobilization and customer acceptance in the U.S.

Gulf of Mexico and an upgrade for two 20,000 pounds per square inch blowout preventers and other equipment required by our customer.

Deepwater Atlas (c)

(a) In September 2023, we acquired Deepwater Aquila , an ultra-deepwater drillship under construction for Liquila, a previously unconsolidated variable interest entity, by acquiring the outstanding ownership interests in Liquila.

The rig is expected to commence operations under its drilling contract in mid-2024.

(b) In May 2023, we completed construction of the ultra-deepwater drillship Deepwater Titan , and it commenced operations under its drilling contract.

Deepwater Titan is equipped with two 20,000 pounds per square inch blowout preventers and other equipment required by our customer.

(c) In October 2022, we completed construction of the ultra-deepwater drillship Deepwater Atlas , and it commenced the first of two phases of operations using a 15,000 pounds per square inch blowout preventer.

In October 2023, the rig completed installation of a 20,000 pounds per square inch blowout preventer and related equipment, and is expected to return to service in the first half of 2024.

The ultimate amount of our capital expenditures is partly dependent upon financial market conditions, the actual level of operational and contracting activity, the costs associated with the current regulatory environment and customer requested capital improvements and equipment for which the customer agrees to reimburse us.

As with any major shipyard project that takes place over an extended period of time, the actual costs, the timing of expenditures and the project completion date may vary from estimates based on numerous factors, including actual contract terms, weather, exchange rates, shipyard labor conditions, availability of suppliers to recertify equipment and the market demand for components and resources required for drilling unit construction.

We intend to fund the cash requirements relating to our capital expenditures not financed under the Shipyard Loans by using available cash balances, cash generated from operations and asset sales, borrowings under our Secured Credit Facility and financing arrangements with banks or other capital providers.

We intend to fund the cash requirements for our projected capital expenditures by using available cash balances, cash generated from operations and asset sales, borrowings under our Secured Credit Facility and financing arrangements with banks or other capital providers.

Economic conditions and other factors could impact the availability of these sources of funding.

See “— Sources and uses of liquidity .”

Dispositions —From time to time, we may also review the possible disposition of certain drilling assets.

Considering market conditions, we have previously committed to plans to sell certain lower-specification drilling units for scrap value, and we may identify additional lower-specification drilling units to be sold for scrap, recycling or alternative purposes.

From time to time, we may also review the possible disposition of certain drilling assets.

During the year ended December 31, 2023, we made a non-cash contribution of an ultra-deepwater floater, together with related assets and a cash contribution of $10 million, as consideration for an equity ownership interest in an unconsolidated affiliate.

Additionally, on February 15, 2024, we completed the sale of two harsh environment floaters.

Considering market conditions, we have previously committed to plans to sell certain lower specification

drilling units for scrap value, and we may identify additional lower-specification drilling units to be sold for scrap, recycling or alternative purposes.

See Notes to Consolidated Financial Statements — Note 7 — Long-Lived Assets.

Contractual obligations —We provide additional information about our cash requirements for known contractual and other obligations on both a short-term and long-term basis in the notes to our consolidated financial statements as follows:

◾ For additional information regarding our operating and finance lease obligations, see Notes to Consolidated Financial Statements— Note 8—Leases .

◾ For additional information regarding our debt obligations and scheduled maturities, see Notes to Consolidated Financial Statements— Note 9—Debt .

◾ For additional information regarding the obligations to our employees under our various postemployment benefit plans, see Notes to Consolidated Financial Statements— Note 10—Postemployment Benefit Plans .

◾ For additional information regarding our tax obligations, see Notes to Consolidated Financial Statements— Note 11—Income Taxes .

◾ For additional information regarding our obligations under long-term purchase agreements and service agreements and our material contingencies, see Notes to Consolidated Financial Statements— Note 13—Commitments and Contingencies .

The cash obligations of these commitments, which are primarily geographically concentrated in Brazil, are not normally called because we typically comply with the underlying performance requirements.

Standby letters of credit are issued under various committed and uncommitted credit lines, some of which require cash collateral.

For additional information regarding our standby letters of credit and surety bond guarantees, see Notes to Consolidated Financial Statements — Note 13 — Commitments and Contingencies .

Related Party Transactions

We engage in certain related party transactions with our unconsolidated affiliates, the most significant of which are under agreements with Orion.

We have a management services agreement with Orion for the operation, stacking and maintenance of the harsh environment floater Transocean Norge and a marketing services agreement for the marketing of the rig.

We also periodically lease the rig under short-term bareboat charter agreements.

In June 2021, Orion refinanced its shipyard loans under a financing arrangement for $100 million, in which we made a cash investment of $33 million.

Borrowings under the financing arrangement are secured by Transocean Norge .

Additionally, we have a management services agreement with Liquila for various services, including the marketing of

the newbuild ultra-deepwater drilliship Deepwater Aquila .

In April 2023, Perestroika AS (together with its subsidiaries, “Perestroika”), an entity affiliated with one of our directors that beneficially owns approximately 11 percent of our shares, exchanged $213 million aggregate principal amount of the 2.50% Senior Guaranteed Exchangeable Bonds under the terms of the governing indenture at the applicable exchange rate of 162.1626 Transocean Ltd.

shares per $1,000 note.

As part of the transaction governing the exchange, we delivered 34.6 million Transocean Ltd.

shares and additional immaterial cash consideration to such exchanging holder.

The director’s beneficial ownership of our shares resulting from these transactions did not change.

See Notes to Consolidated Financial Statements—Note 9—Debt .

In September 2023, we issued 11.9 million Transocean Ltd.

shares with an aggregate value of $99 million, which included 2.0 million Transocean Ltd.

shares with an aggregate value of $16.4 million issued to Perestroika, to acquire the outstanding ownership interests in Liquila, and as a result, Liquila became our wholly owned subsidiary.

See Notes to Consolidated Financial Statements— Note 4—Unconsolidated Affiliates .

In August 2020, Perestroika AS, an entity affiliated with one of our directors that beneficially owns approximately 11 percent of our shares, exchanged $356 million aggregate principal amount of the 0.50% Exchangeable Senior Bonds for $213 million aggregate principal amount of 2.50% Senior Guaranteed Exchangeable Bonds.

Perestroika AS has certain registration rights related to its shares and shares that may be issued in connection with any exchange of its 2.50% Senior Guaranteed Exchangeable Bonds.

In November 2022, Perestroika AS made a cash investment of $10 million for a 13 percent noncontrolling ownership interest in Liquila.

See Notes to Consolidated Financial Statements— Note 3—Unconsolidated Affiliates and Notes to Consolidated Financial Statements—Note 8—Debt .

We engage in certain related party transactions with our unconsolidated affiliates.

Our most significant transactions with our unconsolidated affiliates are under agreements with Orion Holdings (Cayman) Limited as follows:

(a) we operate, stack and maintain Transocean Norge under a management services agreement, (b) we market Transocean Norge under a marketing services agreement and (c) during operations, we lease Transocean Norge under a bareboat charter agreement.

Additionally, we procure and provide services and equipment from and to other unconsolidated affiliates for technological innovation and subsea minerals exploration.

See Notes to Consolidated Financial Statements—Note 4—Unconsolidated Affiliates .

Critical Accounting Policies and Estimates

Overview —We prepare our consolidated financial statements in accordance with accounting principles generally accepted in the U.S., which require us to make estimates that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures of contingent assets and liabilities.

We prepare our consolidated financial statements in accordance with accounting principles generally accepted in the U.S., which require us to make estimates that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures of contingent assets and liabilities.

These estimates require significant judgments and assumptions.

On an ongoing basis, we evaluate our estimates, including those related to our income taxes, property and equipment, equity investments, contingencies, allowance for excess materials and supplies, intangibles, postemployment benefit plans and share-based compensation.

We base our estimates on historical experience and on various other assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying amounts of assets and liabilities that are not readily apparent from other sources.

We evaluate our estimates on an ongoing basis using historical experience and various other assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying amounts of assets and liabilities that are not readily apparent from other sources.

Actual results may differ from these estimates.

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We have discussed the development, selection and disclosure of such policies and estimates with the audit committee of our board of directors.

For a discussion of our significant accounting policies and accounting standards updates, refer to our Notes to Consolidated Financial Statements— Note 2—Significant Accounting Policies .

Income taxes —We provide for income taxes based on expected taxable income, statutory rates, tax laws and tax planning opportunities available to us in the jurisdictions in which we operate or have a taxable presence.

The relationship between our provision for or benefit from income taxes and our income or loss before income taxes can vary significantly from period to period considering, among other factors, (a) the overall level of income before income taxes, (b) changes in the blend of income that is taxed based on gross revenues rather than income before taxes, (c) rig movements between taxing jurisdictions and (d) our rig operating structures.

For information about our significant accounting policies and accounting standards updates, see Notes to Consolidated Financial Statements— Note 2—Significant Accounting Policies .

Overview —We provide for income taxes based on expected taxable income, statutory rates and tax laws in the jurisdictions in which we operate or have a taxable presence.

between taxing jurisdictions and (d) our rig operating structures.

Consequently, our income tax expense does not change proportionally with our income or loss before income taxes.

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Unrecognized tax benefits —We establish liabilities for estimated tax exposures, and the provisions and benefits resulting from changes to those liabilities are included in our annual tax provision along with related interest and penalties.

Such tax exposures include potential challenges to permanent establishment positions, intercompany pricing, disposition transactions, and withholding tax rates and their applicability.

Such tax exposures include potential challenges to intercompany pricing, disposition transactions, and withholding tax rates and their applicability.

These exposures may be affected by changes in applicable tax law or other factors, which could cause us to revise our prior estimates, and are generally resolved through the settlement of audits within these tax jurisdictions or by judicial means.

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Our evaluation requires us to consider all available positive and negative evidence, including projected future taxable income and the existence of cumulative losses in recent years.

We continually evaluate tax planning strategies that could allow for the future utilization of

our deferred tax assets.

We continually evaluate opportunities for the future utilization of our deferred tax assets.

When it is estimated to be more likely than not that all or some portion of certain deferred tax assets, such as foreign tax credit carryovers or net operating loss carryforwards, will not be realized, we establish a valuation allowance for the amount of the deferred tax assets that is considered to be unrealizable.

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See Notes to Consolidated Financial Statements— Note 11—Income Taxes .

Property and equipment —We apply significant judgment to account for our property and equipment, consisting primarily of offshore drilling rigs and related equipment, related to estimates and assumptions for cost capitalization, useful lives and salvage values.

Property and equipment

Overview —We apply significant judgment to account for our property and equipment, consisting primarily of offshore drilling rigs and related equipment, related to estimates and assumptions for cost capitalization, useful lives and salvage values.

At December 31, 2023 and 2022, the carrying amount of our property and equipment was $16.94 billion and $17.47 billion, respectively, representing 84 percent and 85 percent, respectively, of our total assets.

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For newbuild construction projects, we also capitalize the initial preparation, mobilization and commissioning costs incurred until the drilling unit is placed into service.

Capitalized costs increase the carrying amounts of, and depreciation expense for, the related assets, which also impact our results of operations.

Cost capitalization affects our results of operations by reducing expenses in the period incurred and increasing depreciation expense over the useful life of the asset.

Useful lives and salvage values —We depreciate our assets using the straight-line method over their estimated useful lives after allowing for salvage values.

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Given the nature of these evaluations and their application to specific asset groups and specific time periods, it is not possible to reasonably quantify the impact of changes in these assumptions.

In the year ended December 31, 2020, we recognized a loss of $31 million, which had no tax effect, associated with the impairment of the midwater floater asset group.

See Notes to Consolidated Financial Statements— Note 7—Long-Lived Assets .

Equity-method investments and impairment —We review our equity-method investments for potential impairment when events or changes in circumstances indicate that the carrying amount of the investment might not be recoverable in the near term.

Such circumstances include the following:

(a) evidence we are unable to recover the carrying amount of our investment, (b) evidence that the investee is unable to sustain earnings that would justify the carrying amount or (c) the current fair value of the investment is less than the carrying amount.

If an evaluation of such circumstances results in the determination that an impairment that is other than temporary exists,

we recognize an impairment loss, measured as the amount by which the carrying amount of the investment exceeds its estimated fair value.

To estimate the fair value of the investment, we apply valuation methods that rely primarily on the income and market approaches.

Our estimate of fair value generally requires us to use significant unobservable inputs, representative of Level 3 fair value measurements, including assumptions related to the estimated discount rate and the investee’s long-term future operational performance factors, such as projected revenues and costs and market factors, including demand for the investee’s industry, services and product lines.

Such projections involve significant uncertainties and require significant judgment.

In the years ended December 31, 2021 and 2020, we recognized a loss of $37 million and $59 million, respectively, associated with an other-than-temporary impairment of the carrying amount of our equity-method investments.

See Notes to Consolidated Financial Statements— Note 3—Unconsolidated Affiliates .

Other Matters

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We conduct operations through our various subsidiaries in countries throughout the world.

Each country has its own tax regimes with varying nominal rates, deductions and tax attributes that are subject to changes resulting from new legislation, interpretation or guidance.

Each country has its own tax regimes with varying statutory rates, deductions and tax attributes, which are subject to changes resulting from new legislation, interpretation or guidance.

From time to time, as a result of these changes, we may revise previously evaluated tax positions, which could cause us to adjust our recorded tax assets and liabilities.

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Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.

What changed 10-K

Item 7. Management’s Discussion and Analysis