10-Q 1 rig-20160930x10q.htm 10-Q

Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10‑Q

(Mark one)

☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2016

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _____ to _____

Commission file number 000-53533

TRANSOCEAN LTD.

(Exact name of registrant as specified in its charter)

Zug, Switzerland | 98-0599916
(State or other jurisdiction of incorporation or organization) | (I.R.S. Employer Identification No.)
10 Chemin de Blandonnet Vernier, Switzerland | 1214
(Address of principal executive offices) | (Zip Code)
+41 (22) 930-9000
(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☑ No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S‑T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ☑ No ◻

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non‑accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b‑2 of the Exchange Act.

Large accelerated filer ☑ Accelerated filer ☐ Non‑accelerated filer (do not check if a smaller reporting company) ☐ Smaller reporting company ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b‑2 of the Exchange Act). Yes ☐ No ☑

As of October 25, 2016, 365,490,751 shares were outstanding.

Table of Contents

TRANSOCEAN LTD. AND SUBSIDIARIES

INDEX TO FORM 10‑Q

QUARTER ENDED SEPTEMBER 30, 2016

| Page
PART I. | FINANCIAL INFORMATION |
Item 1. | Financial Statements (Unaudited) |
| Condensed Consolidated Statements of Operations | 1
| Condensed Consolidated Statements of Comprehensive Income | 2
| Condensed Consolidated Balance Sheets | 3
| Condensed Consolidated Statements of Equity | 4
| Condensed Consolidated Statements of Cash Flows | 5
| Notes to Condensed Consolidated Financial Statements | 6
Item 2. | Management’s Discussion and Analysis of Financial Condition and Results of Operations | 21
Item 3. | Quantitative and Qualitative Disclosures About Market Risk | 35
Item 4. | Controls and Procedures | 35
PART II. | OTHER INFORMATION |
Item 1. | Legal Proceedings | 36
Item 1A. | Risk Factors | 36
Item 2. | Unregistered Sales of Equity Securities and Use of Proceeds | 36
Item 4. | Mine Safety Disclosures | 37
Item 6. | Exhibits | 37

Table of Contents

PART I.FINANCIAL INFORMATION

Item I.Financial Statements

TRANSOCEAN LTD. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In millions, except per share data)

(Unaudited)

|  | Three months ended |  | Nine months ended |
|  | September 30, |  | September 30, |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
Operating revenues |  |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling revenues |  | $ | 883 |  | $ | 1,569 |  | $ | 2,912 |  | $ | 5,346 |
Other revenues |  |  | 20 |  |  | 39 |  |  | 275 |  |  | 189 |
|  |  | 903 |  |  | 1,608 |  |  | 3,187 |  |  | 5,535 |
Costs and expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Operating and maintenance |  |  | 404 |  |  | 880 |  |  | 1,569 |  |  | 2,161 |
Depreciation |  |  | 225 |  |  | 210 |  |  | 667 |  |  | 750 |
General and administrative |  |  | 39 |  |  | 45 |  |  | 124 |  |  | 135 |
|  |  | 668 |  |  | 1,135 |  |  | 2,360 |  |  | 3,046 |
Loss on impairment |  |  | (11) |  |  | (13) |  |  | (34) |  |  | (1,839) |
Gain (loss) on disposal of assets, net |  |  | 1 |  |  | (15) |  |  | — |  |  | (20) |
Operating income |  |  | 225 |  |  | 445 |  |  | 793 |  |  | 630 |
Other income (expense), net |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  | 5 |  |  | 5 |  |  | 15 |  |  | 17 |
Interest expense, net of amounts capitalized |  |  | (112) |  |  | (109) |  |  | (296) |  |  | (345) |
Gain on retirement of debt |  |  | 110 |  |  | 7 |  |  | 148 |  |  | 7 |
Other, net |  |  | 7 |  |  | (4) |  |  | 9 |  |  | 38 |
|  |  | 10 |  |  | (101) |  |  | (124) |  |  | (283) |
Income from continuing operations before income tax expense |  |  | 235 |  |  | 344 |  |  | 669 |  |  | 347 |
Income tax expense (benefit) |  |  | (9) |  |  | 17 |  |  | 82 |  |  | 140 |
Income from continuing operations |  |  | 244 |  |  | 327 |  |  | 587 |  |  | 207 |
Income from discontinued operations, net of tax |  |  | — |  |  | 3 |  |  | — |  |  | 2 |
Net income |  |  | 244 |  |  | 330 |  |  | 587 |  |  | 209 |
Net income attributable to noncontrolling interest |  |  | 15 |  |  | 9 |  |  | 32 |  |  | 29 |
Net income attributable to controlling interest |  | $ | 229 |  | $ | 321 |  | $ | 555 |  | $ | 180 |
Earnings per share-basic |  |  |  |  |  |  |  |  |  |  |  |  |
Earnings from continuing operations |  | $ | 0.62 |  | $ | 0.87 |  | $ | 1.50 |  | $ | 0.48 |
Earnings from discontinued operations |  |  | — |  |  | 0.01 |  |  | — |  |  | 0.01 |
Earnings per share |  | $ | 0.62 |  | $ | 0.88 |  | $ | 1.50 |  | $ | 0.49 |
Earnings per share-diluted |  |  |  |  |  |  |  |  |  |  |  |  |
Earnings from continuing operations |  | $ | 0.62 |  | $ | 0.87 |  | $ | 1.49 |  | $ | 0.48 |
Earnings from discontinued operations |  |  | — |  |  | 0.01 |  |  | — |  |  | 0.01 |
Earnings per share |  | $ | 0.62 |  | $ | 0.88 |  | $ | 1.49 |  | $ | 0.49 |
Weighted-average shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 365 |  |  | 364 |  |  | 365 |  |  | 363 |
Diluted |  |  | 365 |  |  | 364 |  |  | 365 |  |  | 363 |

See accompanying notes.

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TRANSOCEAN LTD. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In millions)

(Unaudited)

|  | Three months ended |  | Nine months ended |
|  | September 30, |  | September 30, |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
Net income |  | $ | 244 |  | $ | 330 |  | $ | 587 |  | $ | 209 |
Net income attributable to noncontrolling interest |  |  | 15 |  |  | 9 |  |  | 32 |  |  | 29 |
Net income attributable to controlling interest |  |  | 229 |  |  | 321 |  |  | 555 |  |  | 180 |
Components of net periodic benefit costs before reclassifications |  |  | 8 |  |  | 33 |  |  | 1 |  |  | 19 |
Components of net periodic benefit costs reclassified to net income |  |  | 8 |  |  | 9 |  |  | 9 |  |  | 19 |
Other comprehensive income before income taxes |  |  | 16 |  |  | 42 |  |  | 10 |  |  | 38 |
Income taxes related to other comprehensive income |  |  | — |  |  | — |  |  | (3) |  |  | (2) |
Other comprehensive income |  |  | 16 |  |  | 42 |  |  | 7 |  |  | 36 |
Other comprehensive income attributable to noncontrolling interest |  |  | — |  |  | — |  |  | — |  |  | — |
Other comprehensive income attributable to controlling interest |  |  | 16 |  |  | 42 |  |  | 7 |  |  | 36 |
Total comprehensive income |  |  | 260 |  |  | 372 |  |  | 594 |  |  | 245 |
Total comprehensive income attributable to noncontrolling interest |  |  | 15 |  |  | 9 |  |  | 32 |  |  | 29 |
Total comprehensive income attributable to controlling interest |  | $ | 245 |  | $ | 363 |  | $ | 562 |  | $ | 216 |

See accompanying notes.

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TRANSOCEAN LTD. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(In millions, except share data)

(Unaudited)

|  | September 30, |  | December 31, |
|  | 2016 |  | 2015 |
Assets |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 2,534 |  | $ | 2,339 |
Accounts receivable, net of allowance for doubtful accounts of less than $1 at September 30, 2016 and December 31, 2015 |  |  | 887 |  |  | 1,379 |
Materials and supplies, net of allowance for obsolescence of $159 and $148 at September 30, 2016 and December 31, 2015, respectively |  |  | 585 |  |  | 635 |
Assets held for sale |  |  | 6 |  |  | 8 |
Restricted cash |  |  | 366 |  |  | 340 |
Other current assets |  |  | 113 |  |  | 84 |
Total current assets |  |  | 4,491 |  |  | 4,785 |
Property and equipment |  |  | 27,178 |  |  | 26,274 |
Less accumulated depreciation |  |  | (6,078) |  |  | (5,456) |
Property and equipment, net |  |  | 21,100 |  |  | 20,818 |
Deferred income taxes, net |  |  | 247 |  |  | 316 |
Other assets |  |  | 329 |  |  | 410 |
Total assets |  | $ | 26,167 |  | $ | 26,329 |
Liabilities and equity |  |  |  |  |  |  |
Accounts payable |  | $ | 257 |  | $ | 448 |
Accrued income taxes |  |  | 105 |  |  | 82 |
Debt due within one year |  |  | 1,069 |  |  | 1,093 |
Other current liabilities |  |  | 875 |  |  | 1,046 |
Total current liabilities |  |  | 2,306 |  |  | 2,669 |
Long-term debt |  |  | 7,191 |  |  | 7,397 |
Deferred income taxes, net |  |  | 290 |  |  | 339 |
Other long-term liabilities |  |  | 967 |  |  | 1,108 |
Total long-term liabilities |  |  | 8,448 |  |  | 8,844 |
Commitments and contingencies |  |  |  |  |  |  |
Redeemable noncontrolling interest |  |  | 21 |  |  | 8 |
Shares, CHF 0.10 par value, 393,397,220 authorized, 167,617,649 conditionally authorized, 370,967,382 issued and 365,461,629 outstanding at September 30, 2016 and CHF 15.00 par value, 396,260,487 authorized, 167,617,649 conditionally authorized, 373,830,649 issued and 364,035,397 outstanding at December 31, 2015 |  |  | 34 |  |  | 5,193 |
Additional paid-in capital |  |  | 10,682 |  |  | 5,739 |
Treasury shares, at cost, 2,863,267 held at December 31, 2015 |  |  | — |  |  | (240) |
Retained earnings |  |  | 4,695 |  |  | 4,140 |
Accumulated other comprehensive loss |  |  | (327) |  |  | (334) |
Total controlling interest shareholders’ equity |  |  | 15,084 |  |  | 14,498 |
Noncontrolling interest |  |  | 308 |  |  | 310 |
Total equity |  |  | 15,392 |  |  | 14,808 |
Total liabilities and equity |  | $ | 26,167 |  | $ | 26,329 |

See accompanying notes.

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TRANSOCEAN LTD. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY

(In millions)

(Unaudited)

|  | Nine months ended |  | Nine months ended |
|  | September 30, |  | September 30, |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
|  | Quantity |  | Amount |
Shares |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  | 364 |  |  | 362 |  | $ | 5,193 |  | $ | 5,169 |
Reduction of par value |  |  | — |  |  | — |  |  | (5,159) |  |  | — |
Issuance of shares under share-based compensation plans |  |  | 1 |  |  | 2 |  |  | — |  |  | 20 |
Balance, end of period |  |  | 365 |  |  | 364 |  | $ | 34 |  | $ | 5,189 |
Additional paid-in capital |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  |  |  |  |  | $ | 5,739 |  | $ | 5,797 |
Share-based compensation |  |  |  |  |  |  |  |  | 28 |  |  | 47 |
Reduction of par value |  |  |  |  |  |  |  |  | 5,159 |  |  | — |
Cancellation of shares held in treasury |  |  |  |  |  |  |  |  | (240) |  |  | — |
Issuance of shares under share-based compensation plans |  |  |  |  |  |  |  |  | — |  |  | (20) |
Reclassification of obligation for distribution of qualifying additional paid-in capital |  |  |  |  |  |  |  |  | — |  |  | (218) |
Allocated capital for transactions with holders of noncontrolling interest |  |  |  |  |  |  |  |  | (7) |  |  | 9 |
Other, net |  |  |  |  |  |  |  |  | 3 |  |  | (5) |
Balance, end of period |  |  |  |  |  |  |  | $ | 10,682 |  | $ | 5,610 |
Treasury shares, at cost |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  |  |  |  |  | $ | (240) |  | $ | (240) |
Cancellation of shares held in treasury |  |  |  |  |  |  |  |  | 240 |  |  | — |
Balance, end of period |  |  |  |  |  |  |  | $ | — |  | $ | (240) |
Retained earnings |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  |  |  |  |  | $ | 4,140 |  | $ | 3,349 |
Net income attributable to controlling interest |  |  |  |  |  |  |  |  | 555 |  |  | 180 |
Balance, end of period |  |  |  |  |  |  |  | $ | 4,695 |  | $ | 3,529 |
Accumulated other comprehensive loss |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  |  |  |  |  | $ | (334) |  | $ | (404) |
Other comprehensive income attributable to controlling interest |  |  |  |  |  |  |  |  | 7 |  |  | 36 |
Balance, end of period |  |  |  |  |  |  |  | $ | (327) |  | $ | (368) |
Total controlling interest shareholders’ equity |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  |  |  |  |  | $ | 14,498 |  | $ | 13,671 |
Total comprehensive income attributable to controlling interest |  |  |  |  |  |  |  |  | 562 |  |  | 216 |
Share-based compensation |  |  |  |  |  |  |  |  | 28 |  |  | 47 |
Reclassification of obligation for distribution of qualifying additional paid-in capital |  |  |  |  |  |  |  |  | — |  |  | (218) |
Allocated capital for transactions with holders of noncontrolling interest |  |  |  |  |  |  |  |  | (7) |  |  | 9 |
Other, net |  |  |  |  |  |  |  |  | 3 |  |  | (5) |
Balance, end of period |  |  |  |  |  |  |  | $ | 15,084 |  | $ | 13,720 |
Noncontrolling interest |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  |  |  |  |  | $ | 310 |  | $ | 311 |
Total comprehensive income attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 19 |  |  | 25 |
Reacquired noncontrolling interest |  |  |  |  |  |  |  |  | (5) |  |  | — |
Distributions to holders of noncontrolling interest |  |  |  |  |  |  |  |  | (23) |  |  | (21) |
Allocated capital for transactions with holders of noncontrolling interest |  |  |  |  |  |  |  |  | 7 |  |  | (9) |
Balance, end of period |  |  |  |  |  |  |  | $ | 308 |  | $ | 306 |
Total equity |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  |  |  |  |  | $ | 14,808 |  | $ | 13,982 |
Total comprehensive income |  |  |  |  |  |  |  |  | 581 |  |  | 241 |
Share-based compensation |  |  |  |  |  |  |  |  | 28 |  |  | 47 |
Reacquired noncontrolling interest |  |  |  |  |  |  |  |  | (5) |  |  | — |
Reclassification of obligation for distribution of qualifying additional paid-in capital |  |  |  |  |  |  |  |  | — |  |  | (218) |
Distributions to holders of noncontrolling interest |  |  |  |  |  |  |  |  | (23) |  |  | (21) |
Other, net |  |  |  |  |  |  |  |  | 3 |  |  | (5) |
Balance, end of period |  |  |  |  |  |  |  | $ | 15,392 |  | $ | 14,026 |

See accompanying notes.

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TRANSOCEAN LTD. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In millions)

(Unaudited)

| Nine months ended |
| September 30, |
| 2016 |  | 2015 |
Cash flows from operating activities |  |  |  |  |  |
Net income | $ | 587 |  | $ | 209 |
Adjustments to reconcile to net cash provided by operating activities: |  |  |  |  |  |
Depreciation |  | 667 |  |  | 750 |
Share-based compensation expense |  | 28 |  |  | 47 |
Loss on impairment |  | 34 |  |  | 1,839 |
Loss on disposal of assets, net |  | — |  |  | 20 |
Gain on retirement of debt |  | (148) |  |  | (7) |
Deferred income tax expense (benefit) |  | 11 |  |  | (104) |
Other, net |  | 11 |  |  | 55 |
Changes in deferred revenues, net |  | (30) |  |  | (118) |
Changes in deferred costs, net |  | 66 |  |  | 142 |
Changes in operating assets and liabilities |  | 52 |  |  | (348) |
Net cash provided by operating activities |  | 1,278 |  |  | 2,485 |
Cash flows from investing activities |  |  |  |  |  |
Capital expenditures |  | (1,072) |  |  | (1,336) |
Proceeds from disposal of assets, net |  | 16 |  |  | 36 |
Proceeds from repayment of loans receivable |  | — |  |  | 15 |
Net cash used in investing activities |  | (1,056) |  |  | (1,285) |
Cash flows from financing activities |  |  |  |  |  |
Proceeds from issuance of debt, net of discount and costs |  | 1,210 |  |  | — |
Repayments of debt |  | (1,316) |  |  | (1,306) |
Deposit to cash account restricted for financing activities |  | (24) |  |  | — |
Proceeds from cash accounts and investments restricted for financing activities |  | 124 |  |  | 110 |
Distributions of qualifying additional paid-in capital |  | — |  |  | (381) |
Distributions to holders of noncontrolling interest |  | (23) |  |  | (21) |
Other, net |  | 2 |  |  | (3) |
Net cash used in financing activities |  | (27) |  |  | (1,601) |
Net increase (decrease) in cash and cash equivalents |  | 195 |  |  | (401) |
Cash and cash equivalents at beginning of period |  | 2,339 |  |  | 2,635 |
Cash and cash equivalents at end of period | $ | 2,534 |  | $ | 2,234 |

See accompanying notes.

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TRANSOCEAN LTD. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1—Business

Overview—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. We specialize in technically demanding sectors of the offshore drilling business with a particular focus on deepwater and harsh environment drilling services. Our mobile offshore drilling fleet is considered one of the most versatile fleets in the world. We contract our drilling rigs, related equipment and work crews predominantly on a dayrate basis to drill oil and gas wells. At September 30, 2016, we owned or had partial ownership interests in and operated 58 mobile offshore drilling units, including 29 ultra‑deepwater floaters, seven harsh environment floaters, four deepwater floaters, eight midwater floaters and 10 high‑specification jackups. At September 30, 2016, we also had five ultra‑deepwater drillships and five high‑specification jackups under construction or under contract to be constructed. See Note 8—Drilling Fleet.

Transocean Partners—On July 31, 2016, we entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Transocean Partners LLC, a Marshall Islands limited liability company (“Transocean Partners”), and two of our wholly owned subsidiaries. Upon the closing of the merger as contemplated by the Merger Agreement, Transocean Partners will merge with one of our subsidiaries, with Transocean Partners continuing as the surviving company and a wholly owned indirect subsidiary of Transocean Ltd. Each of the Transocean Partners common units that is issued and outstanding immediately prior to the closing, other than units held by Transocean and its subsidiaries, will be converted into the right to receive 1.1427 of our shares. We expect to issue approximately 22.7 million shares, issued from conditional capital, to complete the merger. A Transocean shareholder vote will not be required to complete the merger.

The merger has been approved by a special committee of our board of directors, by the Transocean Partners board of directors and the Transocean Partners conflicts committee, and by the boards of directors of our subsidiary companies that are parties to the Merger Agreement. Consummation of the merger is subject to various conditions, including approval of the Merger Agreement by the unitholders of Transocean Partners and other customary closing conditions. We expect that the closing of the merger will take place in the fourth quarter of 2016. See Note 13—Noncontrolling Interest and Note 15—Subsequent Events.

Par value reduction—On October 29, 2015, shareholders at our extraordinary general meeting approved the reduction of the par value of each of our shares to CHF 0.10 from the original par value of CHF 15.00. Following formal notification to creditors and establishment of a public deed of compliance, the reduction of par value became effective as of January 7, 2016, upon registration in the commercial register. See Note 12—Shareholders’ Equity.

Note 2—Significant Accounting Policies

Presentation—We have prepared our accompanying unaudited condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S.”) for interim financial information and with the instructions to Form 10‑Q and Article 10 of Regulation S‑X of the U.S. Securities and Exchange Commission. Pursuant to such rules and regulations, these financial statements do not include all disclosures required by accounting principles generally accepted in the U.S. for complete financial statements. The condensed consolidated financial statements reflect all adjustments, which are, in the opinion of management, necessary for a fair presentation of financial position, results of operations and cash flows for the interim periods. Such adjustments are considered to be of a normal recurring nature unless otherwise noted. Operating results for the three and nine months ended September 30, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016 or for any future period. The accompanying condensed consolidated financial statements and notes thereto should be read in conjunction with the audited consolidated financial statements and notes thereto as of December 31, 2015 and 2014 and for each of the three years in the period ended December 31, 2015 included in our annual report on Form 10‑K filed on February 25, 2016.

Accounting estimates—To prepare financial statements in accordance with accounting principles generally accepted in the U.S., we are required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosures of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates and assumptions, including those related to our allowance for doubtful accounts, materials and supplies obsolescence, property and equipment, assets held for sale, income taxes, contingencies, share‑based compensation, defined benefit pension plans and other postretirement benefits. We base our estimates and assumptions on historical experience and on various other factors 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 could differ from such estimates.

Fair value measurements—We estimate fair value at a price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants in the principal market for the asset or liability. Our valuation techniques require inputs that we categorize using a three‑level hierarchy, from highest to lowest level of observable inputs, as follows: (1) significant observable inputs, including unadjusted quoted prices for identical assets or liabilities in active markets (“Level 1”), (2) significant other observable inputs, including direct or indirect market data for similar assets or liabilities in active markets or identical assets or liabilities in less active markets (“Level 2”) and (3) significant unobservable inputs, including those that require considerable judgment for which there is little or no market data (“Level 3”). When multiple input levels are required for a valuation, we categorize the entire fair value

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TRANSOCEAN LTD. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—continued

(Unaudited)

measurement according to the lowest level of input that is significant to the measurement even though we may have also utilized significant inputs that are more readily observable.

Capitalized interest—We capitalize interest costs for qualifying construction and upgrade projects. In the three and nine months ended September 30, 2016, we capitalized interest costs of $41 million and $130 million, respectively, for construction work in progress. In the three and nine months ended September 30, 2015, we capitalized interest costs of $36 million and $91 million, respectively, for construction work in progress.

Reclassifications—We have made certain reclassifications to prior period amounts to conform with the current period’s presentation. Such reclassifications did not have a material effect on our condensed consolidated statement of financial position, results of operations or cash flows.

Subsequent events—We evaluate subsequent events through the time of our filing on the date we issue our financial statements. See Note 15—Subsequent Events.

Note 3—New Accounting Pronouncements

Recently issued accounting standards

Presentation of financial statements—Effective with our annual report for the year ending December 31, 2016, we will adopt the accounting standards update that requires us to evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about our ability to continue as a going concern within one year after the date that the financial statements are issued. The update is effective for the annual period ending after December 15, 2016 and for interim and annual periods thereafter. We do not expect that our adoption will have a material effect on the disclosures contained in our notes to condensed consolidated financial statements.

Stock compensation—Effective no later than January 1, 2017, we will adopt the accounting standards update that allows for simplification of the accounting for share‑based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The update, which permits early adoption, is effective for annual periods beginning after December 15, 2016 and interim periods within those annual periods. We do not expect that our adoption will have a material effect on our condensed consolidated statements of financial position, operations or cash flows or on the disclosures contained in our notes to condensed consolidated financial statements.

Revenue from contracts with customers—Effective January 1, 2018, we will adopt the accounting standards update that requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The update, which permits early adoption, is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. We are evaluating the requirements to determine the effect such requirements may have on our condensed consolidated statements of financial position, operations and cash flows and on the disclosures contained in our notes to condensed consolidated financial statements.

Income taxes—Effective January 1, 2018, we will adopt the accounting standards update that requires an entity to recognize the income tax consequences of an intra‑entity transfer of an asset other than inventory when the transaction occurs as opposed to deferring such recognition into future periods. The update, which permits early adoption, is effective for annual reporting periods beginning after December 15, 2017, including interim periods within those annual periods. We do not expect that our adoption will have a material effect on our condensed consolidated statements of financial position, operations or cash flows or on the disclosures contained in our notes to condensed consolidated financial statements.

Leases—Effective no later than January 1, 2019, we will adopt the accounting standards update that (a) requires lessees to recognize a right‑to‑use asset and a lease liability for virtually all leases, and (b) updates previous accounting standards for lessors to align certain requirements with the updates to lessee accounting standards and the revenue recognition accounting standards. The update, which permits early adoption, is effective for interim and annual periods beginning after December 15, 2018, including interim periods within those annual periods. We are evaluating the requirements to determine the effect such requirements may have on our condensed consolidated statements of financial position, operations and cash flows and on the disclosures contained in our notes to condensed consolidated financial statements.

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(Unaudited)

Note 4—Variable Interest Entities

Angola Deepwater Drilling Company Limited (“ADDCL”), a consolidated Cayman Islands company, is a variable interest entity for which we are the primary beneficiary. The carrying amount of ADDCL, after eliminating the effect of intercompany transactions, was as follows (in millions):

|  | September 30, |  | December 31, |
|  | 2016 |  | 2015 |
Assets |  | $ | 819 |  | $ | 859 |
Liabilities |  |  | 31 |  |  | 46 |
Net carrying amount |  | $ | 788 |  | $ | 813 |

Transocean Drilling Services Offshore Inc. (“TDSOI”), a consolidated British Virgin Islands company, was also a variable interest entity for which we were the primary beneficiary. In July 2016, we completed the repurchase of the noncontrolling interest in TDSOI, and as a result, TDSOI became our wholly owned subsidiary and has been excluded from the above carrying amounts. At December 31, 2015, the net carrying amount of TDSOI, after eliminating the effect of intercompany transactions, was $295 million, including assets of $298 million and liabilities of $3 million. See Note 13—Noncontrolling interest.

Note 5—Impairments

Assets held for sale—In the three months ended September 30, 2016, we recognized an aggregate loss of $11 million ($0.03 per diluted share) associated with the impairment of the midwater floaters Transocean Driller and Transocean Winner, along with related and other equipment. In the nine months ended September 30, 2016, we recognized an aggregate loss of $34 million ($31 million, or 0.08 per diluted share, net of tax), associated with the impairment of the deepwater floater Sedco 702 and the midwater floaters Transocean Driller, Transocean John Shaw and Transocean Winner, along with related and other equipment, which were classified as assets held for sale at the time of impairment.

In the three months ended September 30, 2015, we recognized an aggregate loss of $13 million ($0.03 per diluted share), which had no tax effect, associated with the impairment of the midwater floater GSF Rig 135 along with related equipment, which were classified as held for sale at the time of impairment. In the nine months ended September 30, 2015, we recognized an aggregate loss of $664 million ($550 million, or $1.50 per diluted share, net of tax), associated with the impairment of the ultra‑deepwater floaters Deepwater Expedition and GSF Explorer, the deepwater floaters GSF Celtic Sea, Sedco 707 and Transocean Rather and the midwater floaters GSF Aleutian Key, GSF Arctic III, GSF Rig 135, Transocean Amirante and Transocean Legend, along with related equipment, which were classified as assets held for sale at the time of impairment.

We measured the impairment of the drilling units and related equipment as the amount by which the carrying amount exceeded the estimated fair value less costs to sell. We estimated the fair value of the assets using significant other observable inputs, representative of Level 2 fair value measurements, including indicative market values for the drilling units and related equipment to be sold for scrap value. If we commit to plans to sell additional rigs for values below the respective carrying amounts, we may be required to recognize additional losses in future periods associated with the impairment of such assets.

Assets held and used—During the nine months ended September 30, 2015, we identified indicators that the asset groups in our contract drilling services reporting unit may not be recoverable. Such indicators included a reduction in the number of new contract opportunities, customer suspensions of drilling programs, early contract terminations and cancellations and low dayrate fixtures. Our deepwater and midwater asset groups, in particular, experienced significant declines in projected dayrates and utilization caused by increased competition and marginalization of some of the less capable drilling units. As a result of our testing, we determined that the carrying amounts of the deepwater floater and midwater floater asset groups were impaired. In the nine months ended September 30, 2015, we recognized losses of $507 million ($481 million, or $1.32 per diluted share, net of tax) and $668 million ($654 million, or $1.79 per diluted share, net of tax), associated with the impairment of the deepwater floater asset group and the midwater floater asset group, respectively, including losses of $41 million and $11 million, respectively, associated with construction in progress for each asset group.

We estimated the fair value of the asset groups by applying a combination of income and cost approaches, using projected discounted cash flows and estimates of the exchange price that would be received for the assets in the principal or most advantageous market for the assets in an orderly transaction between market participants as of the measurement date. Our estimates of fair value required us to use significant unobservable inputs, representative of a Level 3 fair value measurement, including assumptions related to the future performance of our contract drilling services reporting unit, such as future commodity prices, projected demand for our services, rig availability and dayrates. If we experience increasingly unfavorable changes to actual or anticipated dayrates or other impairment indicators, or if we are unable to secure new or extended contracts for our active units or the reactivation of any of our stacked units, we may be required to recognize additional losses in future periods as a result of impairments of the carrying amount of one or more of our asset groups.

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(Unaudited)

Note 6—Income Taxes

Tax rate—Transocean Ltd., a holding company and Swiss resident, is exempt from cantonal and communal income tax in Switzerland, but is subject to Swiss federal income tax. Our provision for income taxes is based on the tax laws and rates applicable in the jurisdictions in which we operate and earn income. In the nine months ended September 30, 2016 and 2015, our estimated effective tax rate, excluding discrete items, was 21.5 percent and 18.0 percent, respectively, based on estimated annual income from continuing operations before income taxes. For the nine months ended September 30, 2016 and 2015, the effect of the various discrete period tax items was a net tax benefit of $34 million and $9 million, respectively. In the nine months ended September 30, 2016, such discrete items were primarily related to the tax expense or benefits of changes in unrecognized tax benefits associated with tax positions taken in prior years and valuation allowances on deferred tax assets for losses not expected to be realized. In the nine months ended September 30, 2015, such discrete items were primarily related to the tax effect of insurance recoveries that resulted from the resolution of certain matters associated with the Macondo well incident and losses on impairment of certain assets and changes in unrecognized tax benefits associated with tax positions taken in prior years.

Tax returns—We file federal and local tax returns in several jurisdictions throughout the world. With few exceptions, we are no longer subject to examinations of our U.S. and non‑U.S. tax matters for years prior to 2010. Our tax returns in the major jurisdictions in which we operate, other than the U.S., Norway and Brazil, which are mentioned below, are generally subject to examination for periods ranging from three to six years. We have agreed to extensions beyond the statute of limitations in two major jurisdictions for up to 20 years. Tax authorities in certain jurisdictions are examining our tax returns and in some cases have issued assessments. We are defending our tax positions in those jurisdictions. While we cannot predict or provide assurance as to the timing or the outcome of these proceedings, we do not expect the ultimate liability to have a material adverse effect on our condensed consolidated statement of financial position or results of operations, although it may have a material adverse effect on our condensed consolidated statement of cash flows.

U.S. tax investigations—In January 2014, we received a draft assessment from the U.S. tax authorities related to our 2010 and 2011 U.S. federal income tax returns. The significant issue raised in the assessment was related to transfer pricing for certain charters of drilling rigs between our subsidiaries. In April 2016, we entered into a final settlement with the U.S. tax authorities for $31 million, excluding interest and penalties, related to our 2010 and 2011 U.S. federal income tax returns. The terms of this settlement are not necessarily indicative of positions that the U.S. tax authorities may take on transfer pricing or other matters with respect to our tax returns for the years following 2012.

Norway tax investigations and trial—Norwegian civil tax authorities are investigating certain transactions undertaken by our subsidiaries in 1999, 2001 and 2002 as well as the actions of certain employees of our former external tax advisors on these transactions. At September 30, 2016, the remaining outstanding civil tax assessment was for NOK 412 million, equivalent to approximately $52 million, plus interest, related to a 2001 dividend payment. On June 26, 2014, the Norwegian district court in Oslo ruled that our subsidiary was liable for the civil tax assessment but waived all penalties and interest. On September 12, 2014, we and the tax authorities each appealed the ruling. On June 27, 2016, the tax authorities withdrew their appeal of penalties and dropped all penalty claims. We intend to take all other appropriate action to continue to support our position that our Norwegian tax returns are materially correct as filed. Although we are unable to predict the outcome of this matter, we do not expect the effect, if any, to have a material adverse effect on our condensed consolidated statement of financial position, results of operations or cash flows.

Brazil tax investigations—Certain of our Brazilian income tax returns for the years 2000 through 2004 are currently under examination. In December 2005, the Brazilian tax authorities issued an aggregate tax assessment of BRL 806 million, equivalent to approximately $247 million, including penalties and interest, measured as of September 30, 2016. On January 25, 2008, we filed a protest letter with the Brazilian tax authorities, and we are currently engaged in the appeals process. On May 19, 2014, with respect to our Brazilian income tax returns for the years 2009 and 2010, the Brazilian tax authorities issued an aggregate tax assessment of BRL 137 million, equivalent to approximately $42 million, including penalties and interest, measured as of September 30, 2016. On June 18, 2014, we filed a protest letter with the Brazilian tax authorities. We believe our returns are materially correct as filed, and we are vigorously contesting these assessments. An unfavorable outcome on these proposed assessments could result in a material adverse effect on our condensed consolidated statement of financial position, results of operations or cash flows.

Other tax matters—We conduct operations through our various subsidiaries in a number of countries throughout the world. Each country has its own tax regimes with varying nominal rates, deductions, employee contribution requirements and tax attributes. From time to time, we may identify changes to previously evaluated tax positions that could result in adjustments to our recorded assets and liabilities. Although we are unable to predict the outcome of these changes, we do not expect the effect, if any, resulting from these adjustments to have a material adverse effect on our condensed consolidated statement of financial position, results of operations or cash flows.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—continued

(Unaudited)

Note 7—Earnings Per Share

The numerator and denominator used for the computation of basic and diluted per share earnings from continuing operations were as follows (in millions, except per share data):

|  | Three months ended September 30, |  | Nine months ended September 30, |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
|  | Basic |  | Diluted |  | Basic |  | Diluted |  | Basic |  | Diluted |  | Basic |  | Diluted |
Numerator for earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations attributable to controlling interest |  | $ | 229 |  | $ | 229 |  | $ | 318 |  | $ | 318 |  | $ | 555 |  | $ | 555 |  | $ | 178 |  | $ | 178 |
Undistributed earnings allocable to participating securities |  |  | (3) |  |  | (3) |  |  | (1) |  |  | (1) |  |  | (8) |  |  | (9) |  |  | (2) |  |  | (2) |
Income from continuing operations available to shareholders |  | $ | 226 |  | $ | 226 |  | $ | 317 |  | $ | 317 |  | $ | 547 |  | $ | 546 |  | $ | 176 |  | $ | 176 |
Denominator for earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average shares outstanding |  |  | 365 |  |  | 365 |  |  | 364 |  |  | 364 |  |  | 365 |  |  | 365 |  |  | 363 |  |  | 363 |
Effect of stock options and other share-based awards |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Weighted-average shares for per share calculation |  |  | 365 |  |  | 365 |  |  | 364 |  |  | 364 |  |  | 365 |  |  | 365 |  |  | 363 |  |  | 363 |
Per share earnings from continuing operations |  | $ | 0.62 |  | $ | 0.62 |  | $ | 0.87 |  | $ | 0.87 |  | $ | 1.50 |  | $ | 1.49 |  | $ | 0.48 |  | $ | 0.48 |

In the three and nine months ended September 30, 2016, we excluded from the calculation 3.6 million and 2.9 million share‑based awards, respectively, since the effect would have been anti‑dilutive. In the three and nine months ended September 30, 2015, we excluded from the calculation 5.5 million and 3.6 million share‑based awards, respectively, since the effect would have been anti‑dilutive.

Note 8—Drilling Fleet

Construction work in progress—For the nine months ended September 30, 2016 and 2015, the changes in our construction work in progress, including capital expenditures and other capital additions, were as follows (in millions):

|  | Nine months ended |
|  | September 30, |
|  | 2016 |  | 2015 |
Construction work in progress, at beginning of period |  | $ | 3,736 |  | $ | 2,451 |
Capital expenditures |  |  |  |  |  |  |
Newbuild construction program |  |  | 959 |  |  | 1,054 |
Other equipment and construction projects |  |  | 113 |  |  | 282 |
Total capital expenditures |  |  | 1,072 |  |  | 1,336 |
Changes in accrued capital additions |  |  | (90) |  |  | (57) |
Impairment of construction work in progress |  |  | — |  |  | (52) |
Property and equipment placed into service |  |  |  |  |  |  |
Newbuild construction program |  |  | (1,672) |  |  | — |
Other property and equipment |  |  | (203) |  |  | (398) |
Construction work in progress, at end of period |  | $ | 2,843 |  | $ | 3,280 |

Dispositions—During the nine months ended September 30, 2016, in connection with our efforts to dispose of non‑strategic assets, we completed the sale of the deepwater floater Deepwater Navigator and the midwater floaters Falcon 100, GSF Grand Banks, GSF Rig 135, Sedneth 701 and Transocean John Shaw, along with related equipment. In the nine months ended September 30, 2016, we received aggregate net cash proceeds of $11 million, and in the three and nine months ended September 30, 2016, we recognized an aggregate net gain of $3 million and $8 million, respectively, associated with the disposal of these assets. In the three and nine months ended September 30, 2016, we received cash proceeds of $1 million and $5 million, respectively, and recognized an aggregate net loss of $2 million and $8 million, respectively, associated with the disposal of assets unrelated to rig sales.

During the nine months ended September 30, 2015, in connection with our efforts to dispose of non‑strategic assets, we completed the sale of the ultra‑deepwater floaters Deepwater Expedition and GSF Explorer, the deepwater floaters Discoverer Seven Seas, Sedco 707, Sedco 710 and Sovereign Explorer and the midwater floaters C. Kirk Rhein, Jr., GSF Arctic I, GSF Arctic III, J.W. McLean, Sedco 601, Sedco 700 and Transocean Legend, along with related equipment. In the three and nine months ended September 30, 2015, we received aggregate net cash proceeds of $1 million and $25 million, respectively, and recognized an aggregate net gain of $1 million and $7 million, respectively, associated with the disposal of these assets. In the three and nine months

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(Unaudited)

ended September 30, 2015, we received cash proceeds of $2 million and $8 million, respectively, and recognized an aggregate net loss of $16 million and $27 million, respectively, associated with the disposal of assets unrelated to rig sales.

During the nine months ended September 30, 2016, we committed to a plan to sell the deepwater floater Sedco 702 and the midwater floaters Transocean Driller and Transocean Winner, along with related equipment. At September 30, 2016, the aggregate carrying amount of our assets held for sale was $6 million, including the deepwater floater Sedco 702 and the midwater floaters Transocean Driller and Transocean Winner, along with related equipment. At December 31, 2015, the aggregate carrying amount of our assets held for sale was $8 million, including the deepwater floater Deepwater Navigator and the midwater floaters Falcon 100, GSF Grand Banks, GSF Rig 135 and Sedneth 701, along with related equipment, and certain corporate assets. See Note 5—Impairments. See Note 15—Subsequent Events.

Note 9—Debt

Overview—Debt, net of debt‑related balances, including unamortized discounts, premiums, issue costs and fair value adjustments, was comprised of the following (in millions):

|  | September 30, |  | December 31, |
|  | 2016 |  | 2015 |
5.05% Senior Notes due December 2016 (a) |  | $ | 938 |  | $ | 973 |
2.5% Senior Notes due October 2017 (a) |  |  | 504 |  |  | 568 |
Eksportfinans Loans due January 2018 |  |  | 133 |  |  | 216 |
6.00% Senior Notes due March 2018 (a) |  |  | 759 |  |  | 789 |
7.375% Senior Notes due April 2018 (a) |  |  | 211 |  |  | 236 |
6.50% Senior Notes due November 2020 (a) |  |  | 525 |  |  | 911 |
6.375% Senior Notes due December 2021 (a) |  |  | 551 |  |  | 1,143 |
3.8% Senior Notes due October 2022 (a) |  |  | 534 |  |  | 726 |
9.00% Senior Notes due July 2023 (b) |  |  | 1,210 |  |  | — |
7.45% Notes due April 2027 (a) |  |  | 85 |  |  | 94 |
8% Debentures due April 2027 (a) |  |  | 57 |  |  | 57 |
7% Notes due June 2028 |  |  | 308 |  |  | 309 |
Capital lease contract due August 2029 |  |  | 572 |  |  | 591 |
7.5% Notes due April 2031 (a) |  |  | 585 |  |  | 589 |
6.80% Senior Notes due March 2038 (a) |  |  | 991 |  |  | 991 |
7.35% Senior Notes due December 2041 (a) |  |  | 297 |  |  | 297 |
Total debt |  |  | 8,260 |  |  | 8,490 |
Less debt due within one year |  |  |  |  |  |  |
5.05% Senior Notes due December 2016 (a) |  |  | 938 |  |  | 973 |
Eksportfinans Loans due January 2018 |  |  | 106 |  |  | 97 |
Capital lease contract due August 2029 |  |  | 25 |  |  | 23 |
Total debt due within one year |  |  | 1,069 |  |  | 1,093 |
Total long-term debt |  | $ | 7,191 |  | $ | 7,397 |

| (a) |  | Transocean Inc., a 100 percent owned subsidiary of Transocean Ltd., is the issuer of the notes and debentures. Transocean Ltd. has provided a full and unconditional guarantee of the notes and debentures and borrowings under the Five‑Year Revolving Credit Facility. Transocean Ltd. has no independent assets or operations, and following the completion of certain restructuring transactions during the nine months ended September 30, 2016, its only other subsidiary not owned indirectly through Transocean Inc. was minor. Transocean Inc. has no independent assets and operations, other than those related to its investments in non‑guarantor operating companies and balances primarily pertaining to its cash and cash equivalents and debt. Transocean Ltd. and Transocean Inc. are not subject to any significant restrictions on their ability to obtain funds from their consolidated subsidiaries by dividends, loans or return of capital distributions. See Note 15—Subsequent Events.

| (b) |  | Transocean Inc. is the issuer of the unregistered notes. Transocean Ltd. and certain wholly owned subsidiaries of Transocean Inc. (the “Subsidiary Guarantors”) have provided a full and unconditional guarantee of the notes. Such notes rank equal in right of payment to all of our existing and future unsecured unsubordinated obligations and rank structurally senior to the extent of the value of the assets of the Subsidiary Guarantors.

Five‑Year Revolving Credit Facility—In June 2014, we entered into an amended and restated bank credit agreement, which established a $3.0 billion unsecured five‑year revolving credit facility, that is scheduled to expire on June 28, 2019 (the “Five‑Year Revolving Credit Facility”). Among other things, the Five‑Year Revolving Credit Facility includes limitations on creating liens, incurring subsidiary debt, transactions with affiliates, sale/leaseback transactions, mergers and the sale of substantially all assets. The Five‑Year Revolving Credit Facility also includes a covenant imposing a maximum debt to tangible capitalization ratio of 0.6 to 1.0. Borrowings under the Five‑Year Revolving Credit Facility are subject to acceleration upon the occurrence of an event of default, borrowings are guaranteed by Transocean Ltd. and may be prepaid in whole or in part without premium or penalty.

We may borrow under the Five‑Year Revolving Credit Facility at either (1) the adjusted London Interbank Offered Rate plus a margin (the “Five‑Year Revolving Credit Facility Margin”), which ranges from 1.125 percent to 2.0 percent based on the credit rating of our

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non‑credit enhanced senior unsecured long‑term debt (“Debt Rating”), or (2) the base rate specified in the credit agreement plus the Five‑Year Revolving Credit Facility Margin, less one percent per annum. Throughout the term of the Five‑Year Revolving Credit Facility, we pay a facility fee on the daily unused amount of the underlying commitment which ranges from 0.15 percent to 0.35 percent depending on our Debt Rating. Effective May 17, 2016, as a result of a further reduction of our Debt Rating, the Five‑Year Revolving Credit Facility Margin increased to 2.0 percent from 1.75 percent and the facility fee increased to 0.35 percent from 0.275 percent. At September 30, 2016, based on our Debt Rating on that date, the Five‑Year Revolving Credit Facility Margin was 2.0 percent and the facility fee was 0.35 percent. At September 30, 2016, we had no borrowings outstanding or letters of credit issued, and we had $3.0 billion of available borrowing capacity under the Five‑Year Revolving Credit Facility.

Interest rate adjustments—The interest rates for certain of our notes are subject to adjustment from time to time upon a change to our Debt Rating. Effective April 15, 2016, as a result of a reduction of our Debt Rating, the interest rates on the 2.5% Senior Notes due October 2017 (the “2.5% Senior Notes”) and the 3.8% Senior Notes due October 2022 (the “3.8% Senior Notes”) increased to 3.75 percent and 5.05 percent, respectively. Effective June 15, 2016, as a result of a further reduction of our Debt Rating, the interest rates on the 5.05% Senior Notes due December 2016 (the “5.05% Senior Notes”), the 6.375% Senior Notes due December 2021 (the “6.375% Senior Notes”) and the 7.35% Senior Notes due December 2041 increased to 6.80 percent, 8.125 percent and 9.10 percent, respectively. Effective October 15, 2016, as a result of a further reduction of our Debt Rating, the interest rates on the 2.5% Senior Notes and the 3.8% Senior Notes will increase to 4.25 percent and 5.55 percent, respectively.

Debt issuance—On July 21, 2016, we completed an offering of an aggregate principal amount of $1.25 billion of senior unsecured notes due July 15, 2023 (the “9.00% Senior Notes”), and we received aggregate cash proceeds of $1.21 billion, net of initial discount and estimated costs payable by us. We used the majority of the net proceeds from the debt offering to complete the Tender Offer (see “Debt tender offer”). The 9.00% Senior Notes are fully and unconditionally guaranteed by Transocean Ltd. and certain wholly owned subsidiaries of Transocean Inc. We will pay interest on the 9.00% Senior Notes semiannually on January 15 and July 15 of each year, beginning on January 15, 2017. We may redeem all or a portion of the 9.00% Senior Notes at any time prior to July 15, 2020 at a price equal to 100 percent of the aggregate principal amount plus a make‑whole provision, and on or after July 15, 2020, at specified redemption prices. The indenture that governs the 9.00% Senior Notes contains covenants that, among other things, limit our ability to incur certain liens on our drilling units without equally and ratably securing the notes, engage in certain sale and lease‑back transactions covering any of our drilling units, allow our subsidiaries to incur certain additional debt, and consolidate, merge or enter into a scheme of arrangement qualifying as an amalgamation. See Note 15—Subsequent Events.

Debt tender offer—On August 1, 2016, we completed a tender offer (the “Tender Offer”) to purchase for cash up to $1.0 billion aggregate principal amount of our 6.50% Senior Notes due November 2020 (the “6.50% Senior Notes”), 6.375% Senior Notes and 3.8% Senior Notes (collectively, the “Tendered Notes”), subject to the terms and conditions specified in the related offer to purchase. In connection with the Tender Offer, we received valid tenders from holders of an aggregate principal amount of the Tendered Notes as follows: $348 million of the 6.50% Senior Notes, $476 million of the 6.375% Senior Notes and $157 million of the 3.8% Senior Notes. In the three and nine months ended September 30, 2016, we made an aggregate cash payment of $876 million to settle the Tendered Notes, and we recognized an aggregate gain of $104 million associated with the retirement of debt.

Debt repurchases and redemptions—During the three and nine months ended September 30, 2016, we repurchased in the open market an aggregate principal amount of $137 million and $365 million, respectively, of our debt securities for an aggregate cash payment of $131 million and $320 million, respectively. As a result of the repurchases, we retired the respective aggregate principal amounts of the notes as follows: $36 million of the 5.05% Senior Notes, $65 million of the 2.5% Senior Notes, $35 million of the 6.00% Senior Notes due March 2018 (the “6.00% Senior Notes”), $26 million of the 7.375% Senior Notes due April 2018, $32 million of the 6.50% Senior Notes, $120 million of the 6.375% Senior Notes, $38 million of the 3.8% Senior Notes, $8 million of the 7.45% Notes due April 2027 and $5 million of the 7.5% Notes due April 2031. In the three and nine months ended September 30, 2016, we recognized an aggregate gain of $6 million and $44 million, respectively, associated with the retirement of such notes.

During the three and nine months ended September 30, 2015, we repurchased in the open market an aggregate principal amount of $292 million of our debt securities for an aggregate cash payment of $274 million. As a result of the repurchases, we retired the respective aggregate principal amounts of the notes as follows: $5 million of the 5.05% Senior Notes, $107 million of the 2.5% Senior Notes, $134 million of the 6.00% Senior Notes, $30 million of the 6.375% Senior Notes and $16 million of the 3.8% Senior Notes. Additionally, we completed the full redemption of $893 million aggregate principal amount of the then outstanding 4.95% Senior Notes due November 2015 for an aggregate cash payment of $904 million. In the three and nine months ended September 30, 2015, we recognized an aggregate net gain of $7 million associated with the retirement of such repurchased or redeemed notes.

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(Unaudited)

Note 10—Postemployment Benefit Plans

We maintain certain funded and unfunded defined benefit plans in the U.S., under which benefits have ceased accruing (collectively, the “U.S. Plans”). During the nine months ended September 30, 2016, we permitted certain participants of one of our funded U.S. Plans to elect to receive a payment of retirement benefits in the form of either (a) a lump sum distribution or (b) an annuity starting October 1, 2016.

We also maintain defined benefit plans in the United Kingdom, Norway, Nigeria and Indonesia (collectively, the “Non‑U.S. Plans”). During the nine months ended September 30, 2016, benefits ceased accruing under the defined benefit plan in the United Kingdom and certain defined benefit plans in Norway. Additionally, we maintain certain unfunded other postretirement employee benefit plans (collectively, the “OPEB Plans”), under which benefits to eligible participants diminish during a phase‑out period ending December 31, 2025.

The components of net periodic benefit costs, before tax, and funding contributions for these plans were as follows (in millions):

|  | Three months ended September 30, 2016 |  | Three months ended September 30, 2015 |
|  | U.S. |  | Non-U.S. |  | OPEB |  |  |  |  | U.S. |  | Non-U.S. |  | OPEB |  |  |  |
|  | Plans |  | Plans |  | Plans |  | Total |  | Plans |  | Plans |  | Plans |  | Total |
Net periodic benefit costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | — |  | $ | 3 |  | $ | — |  | $ | 3 |  | $ | 1 |  | $ | 7 |  | $ | 1 |  | $ | 9 |
Interest cost |  |  | 18 |  |  | 4 |  |  | (1) |  |  | 21 |  |  | 17 |  |  | 4 |  |  | 1 |  |  | 22 |
Expected return on plan assets |  |  | (20) |  |  | (6) |  |  | — |  |  | (26) |  |  | (22) |  |  | (7) |  |  | — |  |  | (29) |
Settlements and curtailments |  |  | — |  |  | (5) |  |  | 2 |  |  | (3) |  |  | 2 |  |  | 1 |  |  | 1 |  |  | 4 |
Actuarial losses, net |  |  | 1 |  |  | — |  |  | — |  |  | 1 |  |  | 3 |  |  | 2 |  |  | — |  |  | 5 |
Prior service cost, net |  |  | — |  |  | — |  |  | (2) |  |  | (2) |  |  | — |  |  | — |  |  | (1) |  |  | (1) |
Net periodic benefit costs |  | $ | (1) |  | $ | (4) |  | $ | (1) |  | $ | (6) |  | $ | 1 |  | $ | 7 |  | $ | 2 |  | $ | 10 |
Funding contributions |  | $ | 1 |  | $ | 1 |  | $ | — |  | $ | 2 |  | $ | 9 |  | $ | 2 |  | $ | 3 |  | $ | 14 |

|  | Nine months ended September 30, 2016 |  | Nine months ended September 30, 2015 |
|  | U.S. |  | Non-U.S. |  | OPEB |  |  |  |  | U.S. |  | Non-U.S. |  | OPEB |  |  |  |
|  | Plans |  | Plans |  | Plans |  | Total |  | Plans |  | Plans |  | Plans |  | Total |
Net periodic benefit costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 2 |  | $ | 11 |  | $ | — |  | $ | 13 |  | $ | 4 |  | $ | 20 |  | $ | 1 |  | $ | 25 |
Interest cost |  |  | 52 |  |  | 12 |  |  | — |  |  | 64 |  |  | 49 |  |  | 14 |  |  | 2 |  |  | 65 |
Expected return on plan assets |  |  | (60) |  |  | (18) |  |  | — |  |  | (78) |  |  | (65) |  |  | (21) |  |  | — |  |  | (86) |
Settlements and curtailments |  |  | 1 |  |  | (6) |  |  | — |  |  | (5) |  |  | 2 |  |  | 1 |  |  | 1 |  |  | 4 |
Actuarial losses, net |  |  | 3 |  |  | 2 |  |  | — |  |  | 5 |  |  | 8 |  |  | 7 |  |  | — |  |  | 15 |
Prior service cost, net |  |  | — |  |  | — |  |  | (4) |  |  | (4) |  |  | — |  |  | — |  |  | (1) |  |  | (1) |
Net transition obligation |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1 |  |  | — |  |  | 1 |
Net periodic benefit costs |  | $ | (2) |  | $ | 1 |  | $ | (4) |  | $ | (5) |  | $ | (2) |  | $ | 22 |  | $ | 3 |  | $ | 23 |
Funding contributions |  | $ | 3 |  | $ | 41 |  | $ | 1 |  | $ | 45 |  | $ | 10 |  | $ | 14 |  | $ | 6 |  | $ | 30 |

Note 11—Contingencies

Macondo well incident contingencies

Overview—On April 22, 2010, the ultra‑deepwater floater Deepwater Horizon sank after a blowout of the Macondo well caused a fire and explosion on the rig off the coast of Louisiana. At the time of the explosion, Deepwater Horizon was contracted to an affiliate of BP plc (together with its affiliates, “BP”). Following the incident, we have been subject to civil and criminal claims, as well as causes of action, fines and penalties by local, state and federal governments. Litigation commenced shortly after the incident, and most claims against us were consolidated by the U.S. Judicial Panel on Multidistrict Litigation and transferred to the U.S. District Court for the Eastern District of Louisiana (the “MDL Court”). A significant portion of the contingencies arising from the Macondo well incident has now been resolved as a result of settlements with the U.S. Department of Justice (the “DOJ”), BP, the states of Alabama, Florida, Louisiana, Mississippi, and Texas (collectively, the “States”) and the Plaintiffs’ Steering Committee (the “PSC”).

In the nine months ended September 30, 2015, in connection with settlements, as further described below, we recognized income of $788 million ($735 million, or $2.02 per diluted share, net of tax), recorded as a net reduction to operating and maintenance costs and expenses, including $538 million associated with recoveries from insurance for our previously incurred losses, $125 million associated with partial reimbursement from BP for our previously incurred legal costs, and $125 million associated with a net reduction to

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certain related contingent liabilities, primarily associated with contingencies that were either settled or otherwise resolved as a result of settlements with BP and the PSC.

We have recognized a liability for the remaining estimated loss contingencies associated with litigation resulting from the Macondo well incident that we believe are probable and for which a reasonable estimate can be made. At September 30, 2016 and December 31, 2015, the liability for estimated loss contingencies that we believe are probable and for which a reasonable estimate can be made was $250 million, recorded in other current liabilities. The remaining litigation could result in certain loss contingencies that we believe are reasonably possible. Although we have not recognized a liability for such loss contingencies, these contingencies could result in liabilities that we ultimately recognize.

We recognize an asset associated with the portion of our estimated losses that we believe is probable of recovery from insurance and for which we have received from underwriters’ confirmation of expected payment. Although we have available policy limits that could result in additional amounts recoverable from insurance, recovery of such additional amounts is not probable and we are not currently able to estimate such amounts (see “—Insurance coverage”). Our estimates involve a significant amount of judgment.

Plea Agreement—Pursuant to the plea agreement (the “Plea Agreement”), one of our subsidiaries pled guilty to one misdemeanor count of negligently discharging oil into the U.S. Gulf of Mexico, in violation of the Clean Water Act (“CWA”) and agreed to be subject to probation through February 2018. The DOJ agreed, subject to the provisions of the Plea Agreement, not to further prosecute us for certain matters arising from the Macondo well incident. We also agreed to make an aggregate cash payment of $400 million, including a criminal fine of $100 million and cash contributions of $150 million to the National Fish & Wildlife Foundation and $150 million to the National Academy of Sciences, payable in scheduled installments. In each of the nine months ended September 30, 2016 and 2015, we made an aggregate cash payment of $60 million in satisfaction of amounts due under the Plea Agreement. At September 30, 2016 and December 31, 2015, the carrying amount of our liability for settlement obligations under the Plea Agreement was $60 million and $120 million, respectively.

Consent Decree—Under the civil consent decree (the “Consent Decree”), we agreed to undertake certain actions, including enhanced safety and compliance actions when operating in U.S. waters. The Consent Decree also requires us to submit certain plans, reports and submissions and also requires us to make such submittals available publicly. One of the required plans is a performance plan (the “Performance Plan”) that contains, among other things, interim milestones for actions in specified areas and schedules for reports required under the Consent Decree. On January 2, 2014, the DOJ approved our proposed Performance Plan. Additionally, in compliance with the requirements of the Consent Decree and upon approval by the DOJ, we have retained an independent auditor to review and report to the DOJ our compliance with the Consent Decree and an independent process safety consultant to review report and assist with the process safety requirements of the Consent Decree. We may request termination of the Consent Decree after January 2, 2019, provided we meet certain conditions set forth in the Consent Decree. The Consent Decree resolved the claim by the U.S. for civil penalties under the CWA. The Consent Decree did not resolve the U.S. claim under the Oil Pollution Act (“OPA”) for natural resource damages (“NRD”) or for removal costs. However, BP has agreed to indemnify us for NRD and most removal costs (see “—BP Settlement Agreement”).

EPA Agreement—On February 25, 2013, we and the U.S. Environmental Protection Agency (the “EPA”) entered into an agreement (the “EPA Agreement”), which has a five‑year term. Subject to our compliance with the terms of the EPA Agreement, the EPA agreed that it will not suspend, debar or statutorily disqualify us and will lift any existing suspension, debarment or statutory disqualification. In the EPA Agreement, we agreed to comply with our obligations under the Plea Agreement and the Consent Decree and continue the implementation of certain programs and systems designed to enhance our environmental management systems and improve our environmental performance. We also agreed to other specified actions, including the (i) scheduled revision of our environmental management system and maintenance of certain compliance and ethics programs; (ii) compliance with certain employment and contracting procedures; (iii) engagement of an independent compliance auditor to, among other things, assess and report to the EPA on our compliance with the terms of the Plea Agreement, the Consent Decree and the EPA Agreement and (iv) provision of reports and notices with respect to various matters, including those related to compliance, misconduct, legal proceedings, audit reports, the EPA Agreement, the Consent Decree and the Plea Agreement. The EPA Agreement prohibits us from entering into, extending or engaging in certain business relationships with individuals or entities that are debarred, suspended, proposed for debarment or similarly restricted.

BP Settlement Agreement—On May 20, 2015, we entered into a settlement agreement with BP (the “BP Settlement Agreement”). Under the BP Settlement Agreement, BP agreed to indemnify us for compensatory damages, including all NRD and all cleanup and removal costs for oil or pollutants originating from the Macondo well. BP also agreed to cease efforts to recover as an unlimited additional insured under our insurance policies and to be bound to the insurance reimbursement rulings related to the Macondo well incident. We agreed to indemnify BP for personal and bodily injury claims of our employees and for any future costs for the cleanup or removal of pollutants stored on the Deepwater Horizon vessel. Additionally, we mutually agreed to release and withdraw all claims we have against each other arising from the Macondo well litigation and to refrain from making statements regarding gross negligence in the Macondo well incident. In July 2015, pursuant to the BP Settlement Agreements, we received $125 million from BP as partial reimbursement of the legal costs we incurred in connection with the Macondo well incident. We believe the BP Settlement

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Agreement resolved all Macondo well-related litigation between BP and us, and the indemnity BP committed to provide will generally address claims by third parties, including claims for economic and property damages, economic loss and NRD. However, the indemnity obligations do not extend to fines, penalties, or punitive damages.

PSC Settlement Agreement—On May 29, 2015, together with the PSC, we filed a settlement agreement (the “PSC Settlement Agreement”) with the MDL Court for approval. Through the PSC Settlement Agreement, we agreed to pay a total of $212 million, plus up to $25 million for partial reimbursement of attorneys’ fees, to be allocated between two classes of plaintiffs as follows: (1) private plaintiffs, businesses, and local governments who could have asserted punitive damages claims against us under general maritime law (the “Punitive Damages Class”); and (2) private plaintiffs who previously settled economic damages claims against BP and were assigned certain claims BP had made against us (the “Assigned Claims Class”). A court‑appointed neutral representative established the allocation of the settlement payment to be 72.8 percent paid to the Punitive Damages Class and 27.2 percent paid to the Assigned Claims Class. In exchange for these payments, each of the classes agreed to release all respective claims it has against us. Members of the Punitive Damages Class were given the opportunity to opt out of the PSC Settlement Agreement before September 23, 2016, and 36 claimants timely opted out, to pursue punitive damages claims against us. In June 2016 and August 2015, we made a cash deposit of $25 million and $212 million, respectively, into escrow accounts pending approval of the settlement by the MDL Court. At September 30, 2016 and December 31, 2015, the aggregate balance in escrow was $237 million and $212 million, respectively, recorded in other current assets.

Multidistrict litigation proceeding—The Phase One trial in 2013 addressed fault for the Macondo blowout and resulting oil spill. The MDL Court’s September 2014 Phase One ruling concluded that BP was grossly negligent and reckless and 67 percent at fault for the blowout, explosion, and spill; that we were negligent and 30 percent at fault; and that Halliburton Company (“Halliburton”) was negligent and three percent at fault. The finding that we were negligent, but not grossly negligent, meant that, subject to a successful appeal, we would not be held liable for punitive damages and that BP was required to honor its contractual agreements to indemnify us for compensatory damages and release its claims against us. Our settlements with BP and the PSC finally resolve the indemnity and release issues (see “—BP Settlement Agreement” and “—PSC Settlement Agreement”) and, upon court approval of such settlements, largely eliminate our risk should these determinations be reversed through the appeal process. The MDL Court also concluded that we were an “operator” of the Macondo well for purposes of 33 U.S.C. § 2704(c)(3), a provision of OPA that permits government entities to recover removal costs, such as costs associated with the containment and removal of oil, from owners and operators of a facility or vessel that caused a discharge. The MDL Court, however, found that “Transocean’s liability to government entities for removal costs is ultimately shifted to BP by virtue of contractual indemnity,” and BP has agreed to indemnify removal costs for oil or containment originating in the Macondo well through the BP Settlement Agreement (see “—BP Settlement Agreement”). In September 2014, the MDL Court ruled on the liability phase trial, and additional litigation and appeals continue. The Phase One ruling did not quantify damages or result in a final monetary judgment. However, as a result of our settlements, all appeals have been dismissed, thereby making the Phase One ruling final with respect to Transocean.

Pending claims—As of September 30, 2016, numerous complaints remain pending against us, along with other unaffiliated defendants in the MDL Court. We believe our settlement with the PSC, if approved by the MDL Court on November 10, 2016, will resolve many of these pending actions. As for any actions not resolved by these settlements, including any claims by individuals who opt‑out of the PSC Settlement Agreement and federal securities actions, we are vigorously defending those claims and pursuing any and all defenses available. See”—PSC Settlement Agreement” and “—Federal securities claims.”

Federal securities claims—On September 30, 2010, a proposed federal securities class action was filed against us in the U.S. District Court for the Southern District of New York. In the action, a former shareholder of the acquired company alleged that the joint proxy statement related to our shareholder meeting in connection with the merger with the acquired company violated various securities laws and that the acquired company’s shareholders received inadequate consideration for their shares as a result of the alleged violations and sought compensatory and rescissory damages and attorneys’ fees. On March 11, 2014, the District Court for the Southern District of New York dismissed the claims as time-barred. Plaintiffs appealed to the U.S. Court of Appeals for the Second Circuit (the “Second Circuit”), but on March 17, 2016, the Second Circuit affirmed the dismissal. Plaintiffs filed a petition for writ of certiorari with the U.S. Supreme Court on August 12, 2016.

State and other government claims—The majority of the state, local and non‑U.S. government claims initially filed against us have either been settled or dismissed. Claims filed by the Mexican federal government under the OPA and maritime law are pending review in the MDL Court.

Insurance coverage—At the time of the Macondo well incident, our excess liability insurance program offered aggregate insurance coverage of $950 million, excluding a $15 million deductible and a $50 million self-insured layer through our wholly owned captive insurance subsidiary. This excess liability insurance coverage consisted of a first and a second layer of $150 million each, a third and fourth layer of $200 million each and a fifth layer of $250 million. We have recovered costs under the first four excess layers, the limits of which are now fully exhausted. We have submitted claims to the $250 million fifth layer, which if paid, will exhaust such coverage. This layer is comprised of Bermuda market insurers (the “Bermuda Insurers”). The Bermuda Insurers have asserted various coverage defenses to our claims, and we have issued arbitration notices to the Bermuda Insurers.

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Other legal proceedings

Asbestos litigation—In 2004, several of our subsidiaries were named, along with numerous other unaffiliated defendants, in 21 complaints filed on behalf of 769 plaintiffs in the Circuit Courts of the State of Mississippi, and in 2014, a group of similar complaints were filed in Louisiana. The plaintiffs, former employees of some of the defendants, generally allege that the defendants used or manufactured asbestos containing drilling mud additives for use in connection with drilling operations, claiming negligence, products liability, strict liability and claims allowed under the Jones Act and general maritime law. The plaintiffs generally seek awards of unspecified compensatory and punitive damages, but the court‑appointed special master has ruled that a Jones Act employer defendant, such as us, cannot be sued for punitive damages. At September 30, 2016, 15 plaintiffs have claims pending in Mississippi and eight plaintiffs have claims pending in Louisiana in which we have or may have an interest. We intend to defend these lawsuits vigorously, although we can provide no assurance as to the outcome. We have historically maintained broad liability insurance, although we are not certain whether insurance will cover the liabilities, if any, arising out of these claims. Based on our evaluation of the exposure to date, we do not expect the liability, if any, resulting from these claims to have a material adverse effect on our condensed consolidated statement of financial position, results of operations or cash flows.

One of our subsidiaries was involved in lawsuits arising out of the subsidiary’s involvement in the design, construction and refurbishment of major industrial complexes. The operating assets of the subsidiary were sold and its operations were discontinued in 1989, and the subsidiary has no remaining assets other than insurance policies, rights and proceeds, including (i) certain policies subject to litigation and (ii) certain rights and proceeds held directly or indirectly through a qualified settlement fund. The subsidiary has been named as a defendant, along with numerous other companies, in lawsuits alleging bodily injury or personal injury as a result of exposure to asbestos. As of September 30, 2016, the subsidiary was a defendant in approximately 280 lawsuits, some of which include multiple plaintiffs, and we estimate that there are approximately 302 plaintiffs in these lawsuits. For many of these lawsuits, we have not been provided with sufficient information from the plaintiffs to determine whether all or some of the plaintiffs have claims against the subsidiary, the basis of any such claims, or the nature of their alleged injuries. The first of the asbestos‑related lawsuits was filed against the subsidiary in 1990. Through September 30, 2016, the costs incurred to resolve claims, including both defense fees and expenses and settlement costs, have not been material, all known deductibles have been satisfied or are inapplicable, and the subsidiary’s defense fees and expenses and settlement costs have been met by insurance made available to the subsidiary. The subsidiary continues to be named as a defendant in additional lawsuits, and we cannot predict the number of additional cases in which it may be named a defendant nor can we predict the potential costs to resolve such additional cases or to resolve the pending cases. However, the subsidiary has in excess of $1.0 billion in insurance limits potentially available to the subsidiary. Although not all of the policies may be fully available due to the insolvency of certain insurers, we believe that the subsidiary will have sufficient funding directly or indirectly from settlements and claims payments from insurers, assigned rights from insurers and coverage‑in‑place settlement agreements with insurers to respond to these claims. While we cannot predict or provide assurance as to the outcome of these matters, we do not believe that the ultimate liability, if any, arising from these claims will have a material impact on our condensed consolidated statement of financial position, results of operations or cash flows.

Rio de Janeiro tax assessment—In the third quarter of 2006, we received tax assessments of BRL 472 million, equivalent to approximately $145 million, including interest and penalties, measured as of September 30, 2016, from the state tax authorities of Rio de Janeiro in Brazil against one of our Brazilian subsidiaries for taxes on equipment imported into the state in connection with our operations. The assessments resulted from a preliminary finding by these authorities that our record keeping practices were deficient. We currently believe that the substantial majority of these assessments are without merit. We filed an initial response with the Rio de Janeiro tax authorities on September 9, 2006 refuting these additional tax assessments. In September 2007, we received confirmation from the state tax authorities that they believe the additional tax assessments are valid, and as a result, we filed an appeal on September 27, 2007 to the state Taxpayer’s Council contesting these assessments. While we cannot predict or provide assurance as to the final outcome of these proceedings, we do not expect it to have a material adverse effect on our condensed consolidated statement of financial position, results of operations or cash flows.

Brazilian import license assessment—In the fourth quarter of 2010, we received an assessment from the Brazilian federal tax authorities in Rio de Janeiro of BRL 613 million, equivalent to approximately $188 million, including interest and penalties, measured as of September 30, 2016, based upon the alleged failure to timely apply for import licenses for certain equipment and for allegedly providing improper information on import license applications. We believe that a substantial majority of the assessment is without merit and are vigorously pursuing legal remedies. The case was decided partially in favor of our Brazilian subsidiary in the lower administrative court level. The decision cancelled the majority of the assessment, reducing the total assessment to BRL 40 million, equivalent to approximately $12 million. On July 14, 2011, we filed an appeal to eliminate the assessment. On May 23, 2013, a ruling was issued that eliminated all assessment amounts. A further appeal by the taxing authorities was filed in November 2014 and accepted for review in April 2015. In May 2016, we lost the appeal at the administrative level. We intend to appeal this decision at the judicial level. While we cannot predict or provide assurance as to the outcome of these proceedings, we do not expect it to have a material adverse effect on our condensed consolidated statement of financial position, results of operations or cash flows.

Nigerian Cabotage Act litigation—In October 2007, three of our subsidiaries were each served a Notice and Demand from the Nigeria Maritime Administration and Safety Agency, imposing a two percent surcharge on the value of all contracts performed by us in

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Nigeria pursuant to the Coastal and Inland Shipping (Cabotage) Act 2003 (the “Cabotage Act”). Our subsidiaries each filed an originating summons in the Federal High Court in Lagos challenging the imposition of this surcharge on the basis that the Cabotage Act and associated levy is not applicable to drilling rigs. The respondents challenged the competence of the suits on several procedural grounds. The court upheld the objections and dismissed the suits. In December 2010, our subsidiaries filed a new joint Cabotage Act suit. While we cannot predict or provide assurance as to the outcome of these proceedings, we do not expect the proceedings to have a material adverse effect on our condensed consolidated statement of financial position, results of operations or cash flows.

Other matters—We are involved in various tax matters, various regulatory matters, and a number of claims and lawsuits, asserted and unasserted, all of which have arisen in the ordinary course of our business. We do not expect the liability, if any, resulting from these other matters to have a material adverse effect on our condensed consolidated statement of financial position, results of operations or cash flows. We cannot predict with certainty the outcome or effect of any of the litigation matters specifically described above or of any such other pending, threatened, or possible litigation or liability. We can provide no assurance that our beliefs or expectations as to the outcome or effect of any tax, regulatory, lawsuit or other litigation matter will prove correct and the eventual outcome of these matters could materially differ from management’s current estimates.

Other environmental matters

Hazardous waste disposal sites—We have certain potential liabilities under the Comprehensive Environment Response, Compensation and Liability Act (“CERCLA”) and similar state acts regulating cleanup of various hazardous waste disposal sites, including those described below. CERCLA is intended to expedite the remediation of hazardous substances without regard to fault. Potentially responsible parties (“PRPs”) for each site include present and former owners and operators of, transporters to and generators of the substances at the site. Liability is strict and can be joint and several.

We have been named as a PRP in connection with a site located in Santa Fe Springs, California, known as the Waste Disposal, Inc. site. Under a consent decree entered by the court, we and other PRPs agreed with the EPA and the DOJ to settle our potential liabilities for this site by agreeing to perform the remaining remediation required by the EPA. The parties to the settlement entered into a participation agreement, under which we agreed to pay for approximately eight percent of the remediation and related costs. The remediation is complete, and we believe our share of the future operation and maintenance costs of the site is not material. There are additional potential liabilities related to the site, but these cannot be quantified, and we have no reason at this time to believe that they will be material.

One of our subsidiaries has been ordered by the California Regional Water Quality Control Board (“CRWQCB”) to develop a testing plan for a site known as Campus 1000 Fremont in Alhambra, California, which is now a part of the San Gabriel Valley, Area 3, Superfund site. We were also advised that one or more of our subsidiaries that formerly owned and operated the site would likely be named by the EPA as PRPs. The current property owner, an unrelated party, performed the required testing and detected no contaminants. In discussions with CRWQCB staff, we were advised of their intent to issue us a “no further action” letter, but it has not yet been received. Based on the test results, we would contest any potential liability. We have no knowledge at this time of the potential cost of any remediation, who else will be named as PRPs, and whether in fact any of our subsidiaries is a responsible party. The subsidiaries in question do not own any operating assets and have limited ability to respond to any liabilities.

Resolutions of other claims by the EPA, the involved state agency or PRPs are at various stages of investigation. These investigations involve determinations of (a) the actual responsibility attributed to us and the other PRPs at the site, (b) appropriate investigatory or remedial actions and (c) allocation of the costs of such activities among the PRPs and other site users. Our ultimate financial responsibility in connection with those sites may depend on many factors, including (i) the volume and nature of material, if any, contributed to the site for which we are responsible, (ii) the number of other PRPs and their financial viability and (iii) the remediation methods and technology to be used.

It is difficult to quantify with certainty the potential cost of these environmental matters, particularly in respect of remediation obligations. Nevertheless, based upon the information currently available, we believe that our ultimate liability arising from all environmental matters, including the liability for all other related pending legal proceedings, asserted legal claims and known potential legal claims which are likely to be asserted, is adequately accrued and should not have a material effect on our condensed consolidated statement of financial position, results of operations or cash flows.

Letters of credit and surety bonds

At September 30, 2016 and December 31, 2015, we had outstanding letters of credit totaling $68 million and $153 million, respectively, issued under various committed and uncommitted credit lines provided by several banks to guarantee various contract bidding, performance activities and customs obligations. As is customary in the contract drilling business, we also have various surety bonds in place that secure customs obligations related to the importation of our rigs and certain performance and other obligations. At September 30, 2016 and December 31, 2015, we had outstanding surety bonds totaling $31 million and $30 million, respectively.

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Note 12—Shareholders’ Equity

Par value reduction—On October 29, 2015, shareholders at our extraordinary general meeting approved the reduction of the par value of each of our shares to CHF 0.10 from the original par value of CHF 15.00. Following a formal notification to creditors and establishment of a public deed of compliance, the reduction of par value, which was approved at our extraordinary general meeting held on October 29, 2015, became effective as of January 7, 2016 upon registration in the commercial register.

Distributions of qualifying additional paid‑in capital—In May 2015, at our annual general meeting, our shareholders approved the distribution of qualifying additional paid‑in capital in the form of a U.S. dollar denominated dividend of $0.60 per outstanding share, payable in four quarterly installments of $0.15 per outstanding share, subject to certain limitations. In May 2015, we recognized a liability of $218 million for the distribution payable, recorded in other current liabilities, with a corresponding entry to additional paid‑in capital. On June 17 and September 23, 2015, we paid the first two installments in the aggregate amount of $109 million to shareholders of record as of May 29 and August 25, 2015. On October 29, 2015, shareholders at the extraordinary general meeting approved the cancellation of the third and fourth installments of the distribution. As a result, we reduced our distribution payable, recorded in other current liabilities, by $109 million with a corresponding increase to additional paid‑in capital.

In May 2014, at our annual general meeting, our shareholders approved the distribution of qualifying additional paid‑in capital in the form of a U.S. dollar denominated dividend of $3.00 per outstanding share, payable in four quarterly installments of $0.75 per outstanding share, subject to certain limitations. On March 18, 2015, we paid the final installment in the aggregate amount of $272 million to shareholders of record as of February 20, 2015.

We did not pay the distribution of qualifying additional paid‑in capital with respect to our shares formerly held in treasury or held by our subsidiary.

Shares held in treasury—In May 2009, at our annual general meeting, our shareholders approved and authorized our board of directors, at its discretion, to repurchase an amount of our shares for cancellation with an aggregate purchase price of up to CHF 3.5 billion, equivalent to approximately $3.6 billion. On February 12, 2010, our board of directors authorized our management to implement the share repurchase program. At December 31, 2015, we held 2.9 million shares in treasury, recorded at cost. On October 29, 2015, shareholders at our extraordinary general meeting approved the cancellation of all shares that have been repurchased to date under our share repurchase program. Following a formal notification to creditors and establishment of a public deed of compliance, the cancellation of our shares held in treasury became effective as of January 7, 2016 upon registration in the commercial register.

Shares held by subsidiary—One of our subsidiaries holds our shares for future use to satisfy our obligations to deliver shares in connection with awards granted under our incentive plans or other rights to acquire our shares. At September 30, 2016 and December 31, 2015, our subsidiary held 5.5 million shares and 6.9 million shares, respectively.

Accumulated other comprehensive loss—The changes in accumulated other comprehensive loss, presented net of tax, which resulted from components of net periodic benefit costs for our defined benefit plans, were as follows (in millions):

|  | Three months ended |  | Nine months ended |
|  | September 30, |  | September 30, |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
Balance, beginning of period |  | $ | (343) |  | $ | (410) |  | $ | (334) |  | $ | (404) |
Other comprehensive income (loss) before reclassifications |  |  | 8 |  |  | 33 |  |  | (2) |  |  | 22 |
Reclassifications to net income |  |  | 8 |  |  | 9 |  |  | 9 |  |  | 14 |
Other comprehensive income, net |  |  | 16 |  |  | 42 |  |  | 7 |  |  | 36 |
Balance, end of period |  | $ | (327) |  | $ | (368) |  | $ | (327) |  | $ | (368) |

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Note 13—Noncontrolling Interest

Transocean Partners—At September 30, 2016 and December 31, 2015, we held 21.3 million common units and 27.6 million subordinated units of Transocean Partners and all of the incentive distribution rights. The remaining publicly held common units represent the noncontrolling interest in Transocean Partners.

On November 4, 2015, Transocean Partners announced that its board of directors approved a unit repurchase program, authorizing it to repurchase for cancellation up to $40 million of its publicly held common units. Subject to market conditions, Transocean Partners may repurchase units from time to time in the open market or in privately negotiated transactions. It may suspend or discontinue the program at any time. The Merger Agreement restricts Transocean Partners’ ability to repurchase its common units without our consent, and no such repurchases have been made since entering into the agreement. In the nine months ended September 30, 2016, Transocean Partners repurchased 386,876 of its publicly held common units for an aggregate purchase price of $3 million. At September 30, 2016 and December 31, 2015, Transocean Partners had outstanding 19.7 million and 20.0 million publicly held common units, respectively. At September 30, 2016 and December 31, 2015, the common and subordinated units held by us collectively represented a 71.3 percent and 70.9 percent, respectively, limited liability company interest in Transocean Partners.

In the nine months ended September 30, 2016 and 2015, Transocean Partners declared and paid an aggregate distribution of $74 million to its unitholders, of which $21 million was paid to holders of noncontrolling interest.

See Note 15—Subsequent Events.

TDSOI—In June 2016, we served notice of our intent to exercise our option to call the 30 percent ownership interest in TDSOI held by our local partner. In July 2016, we completed the repurchase of the noncontrolling interest for a cash payment of $2 million, and as a result, TDSOI became our wholly owned subsidiary. In connection with the transaction, we recorded a capital allocation resulting in a $12 million increase to noncontrolling interest and a corresponding decrease to additional paid‑in capital.

Note 14—Financial Instruments

The carrying amounts and fair values of our financial instruments were as follows (in millions):

|  | September 30, 2016 |  | December 31, 2015 |
|  | Carrying |  | Fair |  | Carrying |  | Fair |
|  | amount |  | value |  | amount |  | value |
Cash and cash equivalents |  | $ | 2,534 |  | $ | 2,534 |  | $ | 2,339 |  | $ | 2,339 |
Restricted cash balances and investments |  |  | 411 |  |  | 414 |  |  | 467 |  |  | 474 |
Long-term debt, including current maturities |  |  | 8,260 |  |  | 7,517 |  |  | 8,490 |  |  | 6,291 |

We estimated the fair value of each class of financial instruments, for which estimating fair value is practicable, by applying the following methods and assumptions:

Cash and cash equivalents—The carrying amount of cash and cash equivalents represents the historical cost, plus accrued interest, which approximates fair value because of the short maturities of those instruments. We measured the estimated fair value of our cash equivalents using significant other observable inputs, representative of a Level 2 fair value measurement, including the net asset values of the investments. At September 30, 2016 and December 31, 2015, the aggregate carrying amount of our cash equivalents was $1.9 billion and $1.7 billion, respectively.

Restricted cash balances and investments—The carrying amount of the restricted cash balances that are subject to restrictions due to legislation, regulation or court order approximates fair value due to the short term nature of the instruments in which the restricted cash balances are held. At September 30, 2016 and December 31, 2015, the aggregate carrying amount of such restricted cash balances was $278 million and $251 million, respectively.

The carrying amount of the restricted cash investments associated with the Eksportfinans Loans due January 2018 (the “Eksportfinans Restricted Cash Investments”) represents the amortized cost of our investment. We measured the estimated fair value of the Eksportfinans Restricted Cash Investments using significant other observable inputs, representative of a Level 2 fair value measurement, including the terms and credit spreads of the instruments. At September 30, 2016 and December 31, 2015, the aggregate carrying amount of the Eksportfinans Restricted Cash Investments was $133 million and $216 million, respectively. At September 30, 2016 and December 31, 2015, the estimated fair value of the Eksportfinans Restricted Cash Investments was $136 million and $223 million, respectively.

Debt—We measured the estimated fair value of our debt, all of which was fixed‑rate debt, using significant other observable inputs, representative of a Level 2 fair value measurement, including the terms and credit spreads for the instruments.

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TRANSOCEAN LTD. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—continued

(Unaudited)

Note 15—Subsequent Events

Secured debt offering—On October 19, 2016, we completed an offering of an aggregate principal amount of $600 million of 7.75% senior secured notes due October 15, 2024 (the “Senior Secured Notes”), and we received aggregate cash proceeds of $583 million, net of initial discount and estimated costs payable by us. Additionally, we are required to make a cash deposit of approximately $53 million into a debt service reserve, a restricted cash account to be held by the Trustee and excluded from cash and cash equivalents on our condensed consolidated balance sheet.

The Senior Secured Notes are secured by the assets and earnings associated with the ultra‑deepwater floater Deepwater Thalassa and the equity of the subsidiary that owns the drilling unit. The Senior Secured Notes are also fully and unconditionally guaranteed by Transocean Ltd., Transocean Inc. and one of our wholly owned subsidiaries.

We will pay interest on the Senior Secured Notes semiannually on April 15 and October 15 of each year, beginning April 15, 2017. Additionally, on each interest payment date, we will be required to redeem, on a pro rata basis, an aggregate principal amount of $30 million of the notes at a price equal to 100 percent of the principal amount. We may redeem all or a portion of the Senior Secured Notes at any time on or prior to October 15, 2020 at a price equal to 100 percent of the aggregate principal amount plus a make‑whole provision. We will be required to redeem the notes at a price equal to 100 percent of the aggregate principal amount, without a make‑whole provision, upon the occurrence of certain events related to the collateral rig and the related drilling contract.

The indenture that governs the Senior Secured Notes contains covenants that, among other things, limit our ability to incur certain liens on our drilling units without equally and ratably securing the notes, engage in certain sale and lease back transactions covering any of our drilling units, allow our subsidiaries to incur certain additional debt, and consolidate, merge or enter into a scheme of arrangement qualifying as an amalgamation and limits the ability of our subsidiaries that own or operate Deepwater Thalassa to declare or pay dividends.

Transocean Partners—On October 4, 2016, Transocean Partners announced that it would convene a special meeting of its common unitholders to approve the Merger Agreement with us. The meeting, which will be open to unitholders of record as of September 22, 2016, will be held on November 11, 2016.

Dispositions—Subsequent to September 30, 2016, we committed to a plan to sell for scrap the midwater floater Sedco 704 and related equipment. At September 30, 2016, the aggregate carrying amount of the assets was $5 million.

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Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations

Forward‑Looking Information

The statements included in this quarterly report regarding future financial performance and results of operations and other statements that are not historical facts are forward‑looking statements within the meaning of Section 27A of the United States (“U.S.”) Securities Act of 1933, as amended, and Section 21E of the U.S. Securities Exchange Act of 1934, as amended. Forward‑looking statements in this quarterly report include, but are not limited to, statements about the following subjects:

| § |  | our results of operations and cash flow from operations, including revenues, revenue efficiency, costs and expenses;

| § |  | the offshore drilling market, including the effects of declines in commodity prices, supply and demand, utilization rates, dayrates, customer drilling programs, stacking of rigs, reactivation of rigs, effects of new rigs on the market, the impact of enhanced regulations in the jurisdictions in which we operate and changes in the global economy or market outlook for our various geographical operating sectors and classes of rigs;

| § |  | customer drilling contracts, including contract backlog, force majeure provisions, contract commencements, contract extensions, contract terminations, contract option exercises, contract revenues, early termination payments, indemnity provisions, contract awards and rig mobilizations;

| § |  | liquidity and adequacy of cash flows for our obligations;

| § |  | debt levels, including impacts of a financial and economic downturn, and interest rates;

| § |  | benefits, effects or results of the merger with Transocean Partners LLC, a Marshall Islands limited liability company (“Transocean Partners”);

| § |  | timing and timeline of the completion of the merger with Transocean Partners;

| § |  | newbuild, upgrade, shipyard and other capital projects, including completion, delivery and commencement of operation dates, expected downtime and lost revenue, the level of expected capital expenditures and the timing and cost of completion of capital projects;

| § |  | the cost and timing of acquisitions and the proceeds and timing of dispositions;

| § |  | the optimization of rig‑based spending;

| § |  | tax matters, including our effective tax rate, changes in tax laws, treaties and regulations, tax assessments and liabilities for tax issues, including those associated with our activities in Brazil, Norway, the United Kingdom (“U.K.”) and the U.S.;

| § |  | legal and regulatory matters, including results and effects of legal proceedings and governmental audits and assessments, outcomes and effects of internal and governmental investigations, customs and environmental matters;

| § |  | insurance matters, including adequacy of insurance, renewal of insurance, insurance proceeds and cash investments of our wholly owned captive insurance company;

| § |  | effects of accounting changes and adoption of accounting policies; and

| § |  | investments in recruitment, retention and personnel development initiatives, pension plan and other postretirement benefit plan contributions, the timing of severance payments and benefit payments.

Forward‑looking statements in this annual report are identifiable by use of the following words and other similar expressions:

§ | “anticipates” | § | “could” | § | “forecasts” | § | “might” | § | “projects”
§ | “believes” | § | “estimates” | § | “intends” | § | “plans” | § | “scheduled”
§ | “budgets” | § | “expects” | § | “may” | § | “predicts” | § | “should”

Such statements are subject to numerous risks, uncertainties and assumptions, including, but not limited to:

| § |  | those described under “Item 1A. Risk Factors” included in Part I of our annual report on Form 10‑K for the year ended December 31, 2015;

| § |  | the failure to obtain Transocean Partners unitholder approval and to satisfy the other conditions to the consummation of the merger;

| § |  | the failure to realize the anticipated benefits of the merger with Transocean Partners, including any cost savings;

| § |  | the adequacy of and access to sources of liquidity;

| § |  | our inability to obtain drilling contracts for our rigs that do not have contracts;

| § |  | our inability to renew drilling contracts at comparable dayrates;

| § |  | operational performance;

| § |  | the impact of regulatory changes;

| § |  | the cancellation of drilling contracts currently included in our reported contract backlog;

| § |  | losses on impairment of long‑lived assets;

| § |  | shipyard, construction and other delays;

| § |  | the results of meetings of our shareholders;

| § |  | changes in political, social and economic conditions;

| § |  | the effect and results of litigation, regulatory matters, settlements, audits, assessments and contingencies; and

| § |  | other factors discussed in this quarterly report and in our other filings with the U.S. Securities and Exchange Commission (“SEC”), which are available free of charge on the SEC website at www.sec.gov.

The foregoing risks and uncertainties are beyond our ability to control, and in many cases, we cannot predict the risks and uncertainties that could cause our actual results to differ materially from those indicated by the forward‑looking statements. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those indicated. All subsequent written and oral forward‑looking statements attributable to us or to persons acting on our behalf are expressly qualified in their entirety by reference to these risks and uncertainties. You should not place undue reliance on forward‑looking statements. Each forward‑looking statement speaks only as of the date of the particular statement. We expressly disclaim any obligations or undertaking to release publicly any updates or revisions to any forward‑looking statement to reflect any change in our expectations or

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beliefs with regard to the statement or any change in events, conditions or circumstances on which any forward‑looking statement is based, except as required by law.

Business

Transocean Ltd. (together with its subsidiaries and predecessors, unless the context requires otherwise, “Transocean,” the “Company,” “we,” “us” or “our”) is a leading international provider of offshore contract drilling services for oil and gas wells. As of October 25, 2016, we owned or had partial ownership interests in and operated 57 mobile offshore drilling units, including 29 ultra‑deepwater floaters, seven harsh environment floaters, four deepwater floaters, seven midwater floaters, and 10 high‑specification jackups. At October 25, 2016, we also had five ultra‑deepwater drillships and five high‑specification jackups under construction or under contract to be constructed.

We provide contract drilling services in a single, global operating segment, which involves contracting our mobile offshore drilling fleet, related equipment and work crews primarily on a dayrate basis to drill oil and gas wells. We specialize in technically demanding regions of the offshore drilling business with a particular focus on deepwater and harsh environment drilling services. We believe our drilling fleet is one of the most versatile fleets in the world, consisting of floaters and high‑specification jackups used in support of offshore drilling activities and offshore support services on a worldwide basis.

Our contract drilling services operations are geographically dispersed in oil and gas exploration and development areas throughout the world. Although rigs can be moved from one region to another, the cost of moving rigs and the availability of rig‑moving vessels may cause the supply and demand balance to fluctuate somewhat between regions. Still, significant variations between regions do not tend to persist long term because of rig mobility. Our fleet operates in a single, global market for the provision of contract drilling services. 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.

Significant Events

Transocean Partners—On July 31, 2016, we entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Transocean Partners and two of our wholly owned subsidiaries. Upon the closing of the merger as contemplated by the Merger Agreement, Transocean Partners will merge with one of our subsidiaries, with Transocean Partners continuing as the surviving company and a wholly owned indirect subsidiary of Transocean Ltd. Each of the Transocean Partners common units that is issued and outstanding immediately prior to the closing, other than units held by Transocean and its subsidiaries, will be converted into the right to receive 1.1427 of our shares. We expect to issue approximately 22.7 million shares from conditional capital to complete the merger. No Transocean shareholder vote will be required to complete the merger.

The merger has been approved by a special committee of our board of directors, by the Transocean Partners board of directors and the Transocean Partners conflicts committee, and by the boards of directors of our subsidiary companies that are parties to the Merger Agreement. Consummation of the merger is subject to various conditions, including approval of the Merger Agreement by the unitholders of Transocean Partners and other customary closing conditions. On October 4, 2016, Transocean Partners announced that it would convene a special meeting of its common unitholders to approve the Merger Agreement with us. The meeting, which will be open to unitholders of record as of September 22, 2016, will be held on November 11, 2016. If it is approved, we expect that the closing of the merger will take place in the fourth quarter of 2016.

Debt issuance—On July 21, 2016, we completed an offering of an aggregate principal amount of $1.25 billion of 9.00% senior unsecured notes due July 15, 2023 (the “9.00% Senior Notes”), and we received aggregate cash proceeds of $1.21 billion, net of initial discount and estimated costs payable by us. On October 19, 2016, we completed an offering of an aggregate principal amount of $600 million of 7.75% senior secured notes due October 15, 2024 (the “Senior Secured Notes”), and we received aggregate cash proceeds of $583 million, net of initial discount and estimated costs payable by us. See “—Liquidity and Capital Resources—Sources and uses of liquidity.”

Debt tender offer—On August 1, 2016, we completed a tender offer (the “Tender Offer”) to purchase for cash up to $1.0 billion aggregate principal amount of our 6.50% Senior Notes due November 2020, 6.375% Senior Notes due December 2021 and 3.8% Senior Notes due October 2022 (collectively, the “Tendered Notes”). In connection with the Tender Offer, we received valid tenders from holders of an aggregate principal amount of $981 million of the Tendered Notes, and we made an aggregate cash payment of $876 million to settle the Tendered Notes. In the three and nine months ended September 30, 2016, as a result of the retirement of the Tendered Notes, we recognized an aggregate gain of $104 million associated with the retirement of debt. See “—Liquidity and Capital Resources—Sources and uses of liquidity.”

Debt repurchases—In the nine months ended September 30, 2016, we completed the settlements of transactions to repurchase in the open market an aggregate principal amount of $365 million of our debt securities for an aggregate cash payment of $320 million. As a result, we recognized an aggregate gain of $44 million associated with the retirement of debt. See “—Liquidity and Capital Resources—Sources and uses of liquidity.”

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Fleet expansion—During the nine months ended September 30, 2016, we completed construction of and placed into service the ultra‑deepwater floaters Deepwater Thalassa and Deepwater Proteus. See “—Operating Results” and “—Liquidity and Capital Resources—Drilling fleet.”

Drilling contract terminations and cancellations—As a result of recent market conditions, we have observed an unprecedented level of early drilling contract terminations and cancellations in the contract drilling industry. In the nine months ended September 30, 2016, we recognized revenues of $276 million associated with early terminations and cancellations of drilling contracts for six of our rigs. In October 2016, we received a notice of early termination of the drilling contract for Discoverer India. See “—Outlook,” “—Operating Results” and “—Liquidity and Capital Resources—Sources and uses of cash.”

Dispositions—During the nine months ended September 30, 2016, we completed the sale of a deepwater floater and five midwater floaters, along with related equipment. In connection with the sale of these assets, we received aggregate net cash proceeds of $11 million, and we recognized an aggregate net gain of $8 million. See “—Liquidity and Capital Resources—Drilling fleet.”

Impairments of long‑lived assets—During the nine months ended September 30, 2016, we committed to a plan to sell for scrap value a deepwater floater and three midwater floaters along with related equipment. As a result, we recognized an aggregate loss of $34 million ($31 million, net of tax) associated with the impairment of these assets. In October 2016, we committed to a plan to sell for scrap value the midwater floater Sedco 704 along with related equipment. See “—Liquidity and Capital Resources—Drilling fleet.”

Norway tax investigations and trial—In January 2016, the Norwegian authorities formally and unconditionally dropped all criminal charges against our subsidiaries and the two employees of our former external advisors and our former external Norwegian attorney. As a result, no criminal charges remain outstanding for any of the previously reported Norway tax investigations or trials and all our subsidiaries and external advisors have been fully acquitted of all criminal charges.

Markets for our shares—Our shares are listed on the New York Stock Exchange under the ticker symbol “RIG” and were previously listed on the SIX Swiss Exchange (“SIX”) under the symbol “RIGN.” Effective March 31, 2016, our shares were delisted from the SIX.

Par value reduction—On October 29, 2015, shareholders at our extraordinary general meeting approved the reduction of the par value of each of our shares to CHF 0.10 from the original par value of CHF 15.00. The reduction of par value became effective as of January 7, 2016 upon registration in the commercial register.

Outlook

Drilling market—Our long‑term view of the offshore drilling market remains positive, particularly for high‑specification assets. However, although commodity pricing has improved over the past quarter, our customers continue to focus on cost reduction and remain disciplined with respect to allocation of capital. As such, we expect them to continue to limit spending on exploration and development opportunities into 2017. The risks of project delays, contract renegotiations and contract terminations are also expected to persist in the near term. Additionally, as a result of the challenging hydrocarbon price environment, we have seen an increased number of requests for nonstandard contractual terms and concessions, including extended payment terms. During the year ended December 31, 2015, our customers early terminated or cancelled contracts for Discoverer Americas, Polar Pioneer, Sedco 714, Sedco Energy and Transocean Spitsbergen. Then, in the nine months ended September 30, 2016, we received notices of early termination or cancellation of drilling contracts for Deepwater Champion, Deepwater Millennium, Discoverer Deep Seas, GSF Constellation II, GSF Development Driller I and Transocean John Shaw. In October 2016, we received a notice of early termination of the drilling contract for Discoverer India.

As expected, few new contracts have been awarded year to date, and this trend is likely to continue through the remainder of 2016, resulting in falling rig utilization rates and exacerbating the negative pressure on rig pricing. Over time, we believe the oversupply of oil will decrease as the current supply and demand imbalance narrows. As spare oil capacity diminishes, we expect upward pressure on commodity pricing with subsequent increased demand for drilling rigs. As of October 24, 2016, our contract backlog was $12.2 billion compared to $13.7 billion as of July 21, 2016.

Fleet status—We present the availability of our rigs in terms of the uncommitted fleet rate. The uncommitted fleet rate is defined as the number of uncommitted days divided by the total number of rig calendar days in the measurement period, expressed as a percentage. An uncommitted day is defined as a calendar day during which a rig is idle or stacked, is not contracted to a customer and is not committed to a shipyard. The uncommitted fleet rates exclude the effect of priced options.

As of October 24, 2016, uncommitted fleet rates for the remainder of 2016 and each of the subsequent four years in the period ending December 31, 2020 were as follows:

|  | 2016 |  | 2017 |  | 2018 |  | 2019 |  | 2020 |
Uncommitted fleet rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ultra-deepwater floaters |  | 55 | % |  | 67 | % |  | 78 | % |  | 86 | % |  | 90 | % |
Harsh environment floaters |  | 57 | % |  | 70 | % |  | 86 | % |  | 93 | % |  | 100 | % |
Deepwater floaters |  | 53 | % |  | 50 | % |  | 58 | % |  | 100 | % |  | 100 | % |
Midwater floaters |  | 86 | % |  | 88 | % |  | 93 | % |  | 100 | % |  | 100 | % |
High-specification jackups |  | 58 | % |  | 76 | % |  | 93 | % |  | 100 | % |  | 100 | % |

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Performance and Other Key Indicators

Contract backlog—Contract backlog is defined as the maximum contractual operating dayrate multiplied by the number of days remaining in the firm contract period, excluding revenues for mobilization, demobilization and contract preparation or other incentive provisions, which are not expected to be significant to our contract drilling revenues. The contract backlog represents the maximum contract drilling revenues that can be earned considering the contractual operating dayrate in effect during the firm contract period and represents the basis for the maximum revenues in our revenue efficiency measurement. To determine maximum revenues for purposes of calculating revenue efficiency, however, we include the revenues earned for mobilization, demobilization and contract preparation, other incentive provisions or cost escalation provisions which are excluded from the amounts presented for contract backlog. The contract backlog for our fleet was as follows:

|  | October 24, |  | July 21, |  | February 11, |
|  | 2016 |  | 2016 |  | 2016 |
Contract backlog |  | (In millions) |
Ultra-deepwater floaters |  | $ | 10,740 |  | $ | 12,165 |  | $ | 13,539 |
Harsh environment floaters |  |  | 746 |  |  | 753 |  |  | 920 |
Deepwater floaters |  |  | 299 |  |  | 332 |  |  | 320 |
Midwater floaters |  |  | 150 |  |  | 156 |  |  | 261 |
High-specification jackups |  |  | 246 |  |  | 314 |  |  | 467 |
Total contract backlog |  | $ | 12,181 |  | $ | 13,720 |  | $ | 15,507 |

Our contract backlog includes only firm commitments, which are represented by signed drilling contracts or, in some cases, by other definitive agreements awaiting contract execution. Our contract backlog includes amounts associated with our newbuild units that are currently under construction. The contractual operating dayrate may be higher than the actual dayrate we ultimately receive or an alternative contractual dayrate, such as a waiting‑on‑weather rate, repair rate, standby rate or force majeure rate, may apply under certain circumstances. 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 dayrate may be reduced to zero if, for example, repairs extend beyond a stated period of time.

In October 2016, we received a notice of early termination of the drilling contract for Discoverer India, effective December 2016. As a result of this termination, our contract backlog for ultra‑deepwater floaters presented as of October 24, 2016 reflects a reduction of approximately $760 million to remove the backlog related to this contract.

Average daily revenue—Average daily revenue is defined as contract drilling revenues earned per operating day. An operating day is defined as a calendar day during which a rig is contracted to earn a dayrate during the firm contract period after commencement of operations. The average daily revenue for our fleet was as follows:

|  | Three months ended |
|  | September 30, |  | June 30 |  | September 30, |
|  | 2016 |  | 2016 |  | 2015 |
Average daily revenue |  |  |  |  |  |  |  |  |  |
Ultra-deepwater floaters |  | $ | 485,300 |  | $ | 503,000 |  | $ | 475,800 |
Harsh environment floaters |  | $ | 225,900 |  | $ | 343,500 |  | $ | 493,400 |
Deepwater floaters |  | $ | 234,100 |  | $ | 238,600 |  | $ | 368,600 |
Midwater floaters |  | $ | 240,400 |  | $ | 304,600 |  | $ | 350,000 |
High-specification jackups |  | $ | 143,100 |  | $ | 137,900 |  | $ | 172,700 |
Total fleet average daily revenue |  | $ | 330,900 |  | $ | 353,700 |  | $ | 385,300 |

Our average daily revenue fluctuates relative to market conditions and our revenue efficiency. The average daily revenue may also be affected by revenues for lump sum bonuses or demobilization fees received from our customers. Our total fleet average daily revenue is also affected by the mix of rig classes being operated, as deepwater floaters, midwater floaters and high‑specification jackups are typically contracted at lower dayrates compared to ultra‑deepwater floaters and harsh environment floaters. We include newbuilds in the calculation when the rigs commence operations upon acceptance by the customer. We remove rigs from the calculation upon disposal, classification as held for sale or classification as discontinued operations.

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Revenue efficiency—Revenue efficiency is defined as actual contract drilling revenues for the measurement period divided by the maximum revenue calculated for the measurement period, expressed as a percentage. Maximum revenue is defined as the greatest amount of contract drilling revenues the drilling unit could earn for the measurement period, excluding amounts related to incentive provisions. The revenue efficiency rates for our fleet were as follows:

|  | Three months ended |
|  | September 30, |  | June 30, |  | September 30, |
|  | 2016 |  | 2016 |  | 2015 |
Revenue efficiency |  |  |  |  |  |  |  |  |  |
Ultra-deepwater floaters |  | 100 | % |  | 97 | % |  | 92 | % |
Harsh environment floaters |  | 97 | % |  | 98 | % |  | 99 | % |
Deepwater floaters |  | 96 | % |  | 97 | % |  | 99 | % |
Midwater floaters |  | 103 | % |  | 99 | % |  | 98 | % |
High-specification jackups |  | 114 | % |  | 87 | % |  | 99 | % |
Total fleet average revenue efficiency |  | 101 | % |  | 97 | % |  | 95 | % |

Our revenue efficiency rate varies due to revenues earned under alternative contractual dayrates, such as a waiting‑on‑weather rate, repair rate, standby rate, force majeure rate or zero rate, that may apply under certain circumstances. We include newbuilds in the calculation when the rigs commence operations upon acceptance by the customer. We exclude rigs that are not operating under contract, such as those that are stacked.

In the three months ended September 30, 2016, revenue efficiency for our fleet exceeded maximum revenues primarily as a result of achieving higher performance, earning certain contractual incentive bonuses and collecting previously deferred revenues.

Rig utilization—Rig utilization is defined as the total number of operating days divided by the total number of rig calendar days in the measurement period, expressed as a percentage. The rig utilization rates for our fleet were as follows:

|  | Three months ended |
|  | September 30, |  | June 30, |  | September 30, |
|  | 2016 |  | 2016 |  | 2015 |
Rig utilization |  |  |  |  |  |  |  |  |  |
Ultra-deepwater floaters |  | 45 | % |  | 43 | % |  | 65 | % |
Harsh environment floaters |  | 71 | % |  | 46 | % |  | 66 | % |
Deepwater floaters |  | 50 | % |  | 52 | % |  | 67 | % |
Midwater floaters |  | 42 | % |  | 48 | % |  | 78 | % |
High-specification jackups |  | 50 | % |  | 59 | % |  | 78 | % |
Total fleet average rig utilization |  | 49 | % |  | 47 | % |  | 70 | % |

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. We include newbuilds in the calculation when the rigs commence operations upon acceptance by the customer. We remove rigs from the calculation upon disposal, classification as held for sale or classification as discontinued operations. Accordingly, our rig utilization can increase when idle or stacked units are removed from our drilling fleet.

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Operating Results

Three months ended September 30, 2016 compared to the three months ended September 30, 2015

The following is an analysis of our operating results. See “—Performance and Other Key Indicators” for definitions of operating days, average daily revenue, revenue efficiency and rig utilization.

|  | Three months ended |  |  |  |  |  |  |
|  | September 30, |  |  |  |  |  |  |
|  | 2016 |  | 2015 |  | Change |  | % Change |
|  | (In millions, except day amounts and percentages) |  |
Operating days |  |  | 2,657 |  |  |  | 4,063 |  |  |  | (1,406) |  | (35) | % |
Average daily revenue |  | $ | 330,900 |  |  | $ | 385,300 |  |  | $ | (54,400) |  | (14) | % |
Revenue efficiency |  |  | 101 | % |  |  | 95 | % |  |  |  |  |  |  |
Rig utilization |  |  | 49 | % |  |  | 70 | % |  |  |  |  |  |  |
Contract drilling revenues |  | $ | 883 |  |  | $ | 1,569 |  |  | $ | (686) |  | (44) | % |
Other revenues |  |  | 20 |  |  |  | 39 |  |  |  | (19) |  | (49) | % |
|  |  | 903 |  |  |  | 1,608 |  |  |  | (705) |  | (44) | % |
Operating and maintenance expense |  |  | (404) |  |  |  | (880) |  |  |  | 476 |  | 54 | % |
Depreciation expense |  |  | (225) |  |  |  | (210) |  |  |  | (15) |  | (7) | % |
General and administrative expense |  |  | (39) |  |  |  | (45) |  |  |  | 6 |  | 13 | % |
Loss on impairment |  |  | (11) |  |  |  | (13) |  |  |  | 2 |  | 15 | % |
Gain (loss) on disposal of assets, net |  |  | 1 |  |  |  | (15) |  |  |  | 16 |  | n/m |  |
Operating income |  |  | 225 |  |  |  | 445 |  |  |  | (220) |  | (49) | % |
Other income (expense), net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  | 5 |  |  |  | 5 |  |  |  | — |  | — | % |
Interest expense, net of amounts capitalized |  |  | (112) |  |  |  | (109) |  |  |  | (3) |  | (3) | % |
Gain on retirement of debt |  |  | 110 |  |  |  | 7 |  |  |  | 103 |  | n/m |  |
Other, net |  |  | 7 |  |  |  | (4) |  |  |  | 11 |  | n/m |  |
Income from continuing operations before income tax expense |  |  | 235 |  |  |  | 344 |  |  |  | (109) |  | (32) | % |
Income tax benefit (expense) |  |  | 9 |  |  |  | (17) |  |  |  | 26 |  | n/m |  |
Income from continuing operations |  | $ | 244 |  |  | $ | 327 |  |  | $ | (83) |  | (25) | % |

“n/m” means not meaningful.

Operating revenues—Contract drilling revenues decreased for the three months ended September 30, 2016 compared to the three months ended September 30, 2015 primarily due to the following: (a) approximately $485 million of decreased revenues resulting from additional rigs idle or stacked, (b) approximately $205 million of decreased revenues resulting from rigs sold or classified as held for sale and (c) approximately $90 million of decreased revenues resulting from lower dayrates. These decreases were partially offset by the following: (a) approximately $90 million of increased revenues associated with our newbuild ultra‑deepwater drillships that commenced operations in the nine months ended September 30, 2016 and (b) approximately $40 million of increased revenues resulting from improved revenue efficiency.

Other revenues decreased for the three months ended September 30, 2016 compared to the three months ended September 30, 2015, due to approximately $19 million of decreased revenues for reimbursable items.

Costs and expenses—Operating and maintenance costs and expenses decreased for the three months ended September 30, 2016 compared to the three months ended September 30, 2015 primarily due to the following: (a) approximately $280 million of decreased costs and expenses resulting from cost reductions related to our idle or stacked rigs, (b) approximately $125 million of decreased costs and expenses resulting from our active fleet primarily related to optimized maintenance and shipyard expenses, reduced materials and supplies obsolescence and reduced personnel costs, (c) approximately $65 million of decreased costs and expenses resulting from rigs sold or classified as held for sale and (d) approximately $50 million of reduced onshore costs. These decreases were partially offset by the following: (a) approximately $25 million of increased costs and expenses associated with our newbuild ultra‑deepwater drillships that commenced operations in the nine months ended September 30, 2016 and (b) $21 million of costs and expenses related to the Transocean Winner grounding incident.

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Depreciation expense increased for the three months ended September 30, 2016 compared to the three months ended September 30, 2015 primarily due to our newbuild ultra‑deepwater drillships and other property and equipment that were placed into service subsequent to September 30, 2015.

Other income and expense—Gain on retirement of debt increased for the three months ended September 30, 2016 compared to the three months ended September 30, 2015 primarily due to an agrregate gain of $104 million resulting from the completion of our tender offer of up to $1.0 billion aggregate principal amount of certain of our debt securities.

Income tax expense—We operate internationally and provide for income taxes based on the tax laws and rates in the countries in which we operate and earn income. In the three months ended September 30, 2016 and 2015, our effective tax rate, excluding discrete items, was 21.2 percent and 7.5 percent, respectively, based on income from continuing operations before income tax expense, after excluding certain items, such as losses on impairment and gains and losses on certain asset disposals. The tax effect, if any, of the excluded items as well as settlements of prior year tax liabilities and changes in prior year tax estimates are all treated as discrete period tax expenses or benefits. In the three months ended September 30, 2016 and 2015, the effect of the various discrete period tax items was a net tax benefit of $38 million and $9 million, respectively. For the three months ended September 30, 2016 and 2015, these discrete tax items, coupled with the excluded income and expense items noted above, resulted in an effective tax rate of (3.8) percent and 4.9 percent, respectively, based on income from continuing operations before income tax expense.

The relationship between our provision for or benefit from income taxes and our income 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 versus income before taxes, (c) rig movements between taxing jurisdictions and (d) our rig operating structures. Generally, our annual marginal tax rate is lower than our annual effective tax rate. Consequently, our income tax expense does not change proportionally with our income before income taxes. Significant decreases in our income before income taxes typically lead to higher effective tax rates, while significant increases in income before income taxes can lead to lower effective tax rates, subject to the other factors impacting income tax expense noted above. With respect to the annual effective tax rate calculation for the three months ended September 30, 2016, a significant portion of our income tax expense was generated in countries in which income taxes are imposed on gross revenues, with the most significant of these countries being Angola. Conversely, the countries in which we incurred the most significant income taxes during this period that were based on income before income tax include Norway, Switzerland, the U.K. and the U.S.

Our rig operating structures further complicate our tax calculations, especially in instances where we have more than one operating structure for the particular taxing jurisdiction and, thus, more than one method of calculating taxes depending on the operating structure utilized by the rig under the contract. For example, two rigs operating in the same country could generate significantly different provisions for income taxes if they are owned by two different subsidiaries that are subject to differing tax laws and regulations in the respective country of incorporation.

See “—Contingencies and Uncertainties—Tax matters.”

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Nine months ended September 30, 2016 compared to nine months ended September 30, 2015

The following is an analysis of our operating results. See “—Performance and Other Key Indicators” for definitions of operating days, average daily revenue, revenue efficiency and rig utilization.

|  | Nine months ended |  |  |  |  |  |  |
|  | September 30, |  |  |  |  |  |  |
|  | 2016 |  | 2015 |  | Change |  | % Change |
|  | (In millions, except day amounts and percentages) |  |
Operating days |  |  | 8,042 |  |  |  | 13,515 |  |  |  | (5,473) |  | (40) | % |
Average daily revenue |  | $ | 360,700 |  |  | $ | 394,800 |  |  | $ | (34,100) |  | (9) | % |
Revenue efficiency |  |  | 97 | % |  |  | 96 | % |  |  |  |  |  |  |
Rig utilization |  |  | 49 | % |  |  | 75 | % |  |  |  |  |  |  |
Contract drilling revenues |  | $ | 2,912 |  |  | $ | 5,346 |  |  | $ | (2,434) |  | (46) | % |
Other revenues |  |  | 275 |  |  |  | 189 |  |  |  | 86 |  | 46 | % |
|  |  | 3,187 |  |  |  | 5,535 |  |  |  | (2,348) |  | (42) | % |
Operating and maintenance expense |  |  | (1,569) |  |  |  | (2,161) |  |  |  | 592 |  | 27 | % |
Depreciation expense |  |  | (667) |  |  |  | (750) |  |  |  | 83 |  | 11 | % |
General and administrative expense |  |  | (124) |  |  |  | (135) |  |  |  | 11 |  | 8 | % |
Loss on impairment |  |  | (34) |  |  |  | (1,839) |  |  |  | 1,805 |  | 98 | % |
Loss on disposal of assets, net |  |  | — |  |  |  | (20) |  |  |  | 20 |  | n/m |  |
Operating income |  |  | 793 |  |  |  | 630 |  |  |  | 163 |  | 26 | % |
Other income (expense), net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  | 15 |  |  |  | 17 |  |  |  | (2) |  | (12) | % |
Interest expense, net of amounts capitalized |  |  | (296) |  |  |  | (345) |  |  |  | 49 |  | 14 | % |
Gain on retirement of debt |  |  | 148 |  |  |  | 7 |  |  |  | 141 |  | n/m |  |
Other, net |  |  | 9 |  |  |  | 38 |  |  |  | (29) |  | (76) | % |
Income from continuing operations before income tax expense |  |  | 669 |  |  |  | 347 |  |  |  | 322 |  | 93 | % |
Income tax expense |  |  | (82) |  |  |  | (140) |  |  |  | 58 |  | 41 | % |
Income from continuing operations |  | $ | 587 |  |  | $ | 207 |  |  | $ | 380 |  | n/m |  |

“n/m” means not meaningful.

Operating revenues—Contract drilling revenues decreased for the nine months ended September 30, 2016 compared to the nine months ended September 30, 2015 primarily due to the following: (a) approximately $1.8 billion of decreased revenues resulting from additional rigs idle or stacked, (b) approximately $590 million of decreased revenues resulting from rigs sold or classified as held for sale and (c) approximately $245 million of decreased revenues resulting from lower dayrates, partially offset by (d) approximately $180 million of increased revenues associated with our newbuild ultra-deepwater drillships that commenced operations in the nine months ended September 30, 2016.

Other revenues increased for the nine months ended September 30, 2016 compared to the nine months ended September 30, 2015 primarily due to approximately $161 million of increased revenues resulting from drilling contracts early terminated or cancelled by our customers, partially offset by approximately $73 million of decreased revenues for reimbursable items.

Costs and expenses—Excluding the effect of $788 million resulting from cost reimbursements from settlements, recoveries from insurance and net adjustments to contingent liabilities associated with the Macondo well incident in the prior‑year period, operating and maintenance costs and expenses decreased for the nine months ended September 30, 2016 compared to the nine months ended September 30, 2015 by approximately $1.4 billion. These decreases were primarily due to the following: (a) approximately $830 million of decreased costs and expenses resulting from cost reductions for rigs idle or stacked, (b) approximately $270 million of decreased costs and expenses resulting from rigs sold or classified as held for sale, (c) approximately $205 million of decreased costs and expenses for our active fleet primarily related to optimized maintenance and shipyard expenses, reduced materials and supplies obsolescence and reduced personnel costs and (d) approximately $125 million of onshore cost reductions. These decreases were partially offset by approximately $55 million of increased costs and expenses associated with our newbuild ultra-deepwater drillships that commenced operations in the nine months ended September 30, 2016.

Depreciation expense decreased for the nine months ended September 30, 2016 compared to the nine months ended September 30, 2015 primarily due to the following: (a) approximately $86 million of decreased depreciation resulting from the impairment of our deepwater floater and midwater floater asset groups in the year ended December 31, 2015 and (b) approximately $40 million of

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decreased depreciation resulting from rigs sold or classified as held for sale. These decreases were partially offset by approximately $50 million of increased depreciation associated with our two newbuild ultra‑deepwater drillships and other property and equipment placed into service subsequent to September 30, 2015.

Impairments—In the nine months ended September 30, 2016, we recognized a loss of $34 million associated with the impairment of certain assets classified as held for sale. In the nine months ended September 30, 2015, we recognized a loss on impairment related to the following: (a) a loss of $507 million associated with the impairment of our deepwater floater asset group, (b) a loss of $668 million associated with the impairment of our midwater floater asset group and (c) an aggregate loss of $664 million associated with the impairment of certain assets classified as held for sale.

Other income and expense—Interest expense, net of amounts capitalized, decreased in the nine months ended September 30, 2016 compared to the nine months ended September 30, 2015, primarily due to the following: (a) approximately $121 million of decreased interest expense resulting from debt retired in connection with our tender offer, repurchases and redemptions and (b) approximately $40 million of increased interest capitalized in connection with our newbuild construction program, partially offset by (c) approximately $87 million of increased interest expense resulting from interest rate increases in connection with downgrades to the credit rating for our senior unsecured long‑term debt and (d) approximately $23 million of increased interest expense resulting from issuance of new debt in the nine months ended September 30, 2016.

Gain on retirement of debt increased for the nine months ended September 30, 2016 compared to the nine months ended September 30, 2015 due to the following: (a) an aggregate gain of $104 million resulting from the completion of our tender offer of up to $1.0 billion aggregate principal amount of certain of our debt securities and (b) an aggregate gain of $44 million resulting from our repurchases of $365 million aggregate principal amount of our debt securities.

Income tax expense—We operate internationally and provide for income taxes based on the tax laws and rates in the countries in which we operate and earn income. In the nine months ended September 30, 2016 and 2015, our effective tax rate, excluding discrete items, was 21.5 percent and 18.0 percent, respectively, based on income from continuing operations before income tax expense, after excluding certain items, such as losses on impairment and gains and losses on certain asset disposals. The tax effect, if any, of the excluded items as well as settlements of prior year tax liabilities and changes in prior year tax estimates are all treated as discrete period tax expenses or benefits. For the nine months ended September 30, 2016 and 2015, the effect of the various discrete period tax items was a net tax benefit of $34 million and $9 million, respectively. For the nine months ended September 30, 2016 and 2015, these discrete tax items, coupled with the excluded income and expense items noted above, resulted in an effective tax rate of 12.3 percent and 40.3 percent, respectively, based on income from continuing operations before income tax expense.

For the nine months ended September 30, 2016, to calculate our estimated effective income tax rate, excluding discrete items, of 21.5 percent in accordance with accounting standards for the provision of income taxes, we excluded certain operating losses in taxable jurisdictions for which we do not expect to realize a tax benefit. For the nine months ended September 30, 2016, our estimated effective income tax rate, excluding discrete items, would have been 22.7 percent if we had included all jurisdictions in our calculations.

The relationship between our provision for or benefit from income taxes and our income 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 versus income before taxes, (c) rig movements between taxing jurisdictions and (d) our rig operating structures. Generally, our annual marginal tax rate is lower than our annual effective tax rate. Consequently, our income tax expense does not change proportionally with our income before income taxes. Significant decreases in our income before income taxes typically lead to higher effective tax rates, while significant increases in income before income taxes can lead to lower effective tax rates, subject to the other factors impacting income tax expense noted above. With respect to the annual effective tax rate calculation for the nine months ended September 30, 2016, a significant portion of our income tax expense was generated in countries in which income taxes are imposed on gross revenues, with the most significant of these countries being Angola. Conversely, the countries in which we incurred the most significant income taxes during this period that were based on income before income tax include Norway, Switzerland, the U.K. and the U.S.

Our rig operating structures further complicate our tax calculations, especially in instances where we have more than one operating structure for the particular taxing jurisdiction and, thus, more than one method of calculating taxes depending on the operating structure utilized by the rig under the contract. For example, two rigs operating in the same country could generate significantly different provisions for income taxes if they are owned by two different subsidiaries that are subject to differing tax laws and regulations in the respective country of incorporation.

See “—Contingencies and Uncertainties—Tax matters.”

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Liquidity and Capital Resources

Sources and uses of cash

At September 30, 2016, we had $2.5 billion in cash and cash equivalents. In the nine months ended September 30, 2016, our primary sources of cash were our cash flows from operating activities, including cash proceeds from customers that executed early terminations or cancellations of drilling contracts; net proceeds from the issuance of debt and net proceeds from restricted cash investments. Our primary uses of cash were capital expenditures, primarily associated with our newbuild construction projects, settlement of the Tendered Notes, debt repurchased in the open market and payment of scheduled installments for our Macondo well incident settlement obligations.

|  | Nine months ended |  |  |  |
|  | September 30, |  |  |  |
|  | 2016 |  | 2015 |  | Change |
|  | (In millions) |
Cash flows from operating activities |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 587 |  | $ | 209 |  | $ | 378 |
Depreciation |  |  | 667 |  |  | 750 |  |  | (83) |
Loss on impairment |  |  | 34 |  |  | 1,839 |  |  | (1,805) |
Gain on retirement of debt |  |  | (148) |  |  | (7) |  |  | (141) |
Deferred income tax expense (benefit) |  |  | 11 |  |  | (104) |  |  | 115 |
Other non-cash items, net |  |  | 39 |  |  | 122 |  |  | (83) |
Changes in deferred revenues and costs, net |  |  | 36 |  |  | 24 |  |  | 12 |
Changes in Macondo well incident assets and liabilities, net |  |  | (60) |  |  | (391) |  |  | 331 |
Changes in other operating assets and liabilities, net |  |  | 112 |  |  | 43 |  |  | 69 |
|  | $ | 1,278 |  | $ | 2,485 |  | $ | (1,207) |

Net cash provided by operating activities decreased primarily due to reduced operating activities, partially offset by cash proceeds of $663 million received in the prior‑year period associated with insurance recoveries with no comparable activity in the current‑year period, cash proceeds of $349 million received from customers in the current‑year period for early terminations or cancellations of drilling contracts with no comparable activity in the prior‑year period, and decreased cash payments of $200 million for scheduled installments for our Macondo well incident settlement obligations.

|  | Nine months ended |  |  |  |
|  | September 30, |  |  |  |
|  | 2016 |  | 2015 |  | Change |
|  | (In millions) |
Cash flows from investing activities |  |  |  |  |  |  |  |  |  |
Capital expenditures |  | $ | (1,072) |  | $ | (1,336) |  | $ | 264 |
Proceeds from disposal of assets, net |  |  | 16 |  |  | 36 |  |  | (20) |
Proceeds from repayment of loans receivable |  |  | — |  |  | 15 |  |  | (15) |
|  | $ | (1,056) |  | $ | (1,285) |  | $ | 229 |

Net cash used in investing activities decreased primarily due to reduced capital expenditures, primarily associated with milestone payments for our major construction projects and other shipyard projects.

|  | Nine months ended |  |  |  |
|  | September 30, |  |  |  |
|  | 2016 |  | 2015 |  | Change |
|  | (In millions) |
Cash flows from financing activities |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of debt, net |  | $ | 1,210 |  | $ | — |  | $ | 1,210 |
Repayments of debt |  |  | (1,316) |  |  | (1,306) |  |  | (10) |
Proceeds from cash investments restricted for financing activities, net of deposits |  |  | 100 |  |  | 110 |  |  | (10) |
Distributions of qualifying additional paid-in capital |  |  | — |  |  | (381) |  |  | 381 |
Other, net |  |  | (21) |  |  | (24) |  |  | 3 |
|  | $ | (27) |  | $ | (1,601) |  | $ | 1,574 |

Net cash used in financing activities decreased primarily due to the receipt of net cash proceeds from issuance of the 9.0% Senior Notes with no comparable activity in the prior‑year period and cash used to pay our shareholders installments of distributions of qualifying additional paid‑in capital in the prior‑year period with no comparable activity in the current‑year period.

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Drilling fleet

Expansion—From time to time, we review possible acquisitions of businesses and drilling rigs and 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. We may commit to such investment without first obtaining customer contracts. Any acquisition, upgrade or new rig construction could involve the payment by us of a substantial amount of cash or the issuance of a substantial number of additional shares or other securities. Our failure to secure drilling contracts for rigs under construction could have an adverse effect on our results of operations or cash flows.

In the nine months ended September 30, 2016, we made capital expenditures of $1.1 billion, including capitalized interest of $130 million. The historical and projected capital expenditures and other capital additions for our recently completed and ongoing major construction projects were as follows:

|  |  |  | Total costs |  | Expected |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  | for the |  | costs for the |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Total costs |  | nine months |  | three months |  |  |  |  |  |  |  |  |  |  |  |  |  | Total |
|  | through |  | ended |  | ending |  |  |  |  |  |  |  |  |  |  |  |  |  | estimated |
|  | December 31, |  | September 30, |  | December 31, |  | For the years ending December 31, |  | costs |
|  | 2015 |  | 2016 |  | 2016 |  | 2017 |  | 2018 |  | 2019 |  | 2020 |  | at completion |
|  | (In millions) |
Deepwater Thalassa (a) |  | $ | 861 |  | $ | 22 |  | $ | 17 |  | $ | — |  | $ | — |  | $ | — |  | $ | — |  | $ | 900 |
Deepwater Proteus (a) |  |  | 758 |  |  | 68 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 826 |
Deepwater Conqueror (b) |  |  | 301 |  |  | 488 |  |  | 61 |  |  | 10 |  |  | — |  |  | — |  |  | — |  |  | 860 |
Deepwater Pontus (c) |  |  | 459 |  |  | 265 |  |  | 45 |  |  | 131 |  |  | — |  |  | — |  |  | — |  |  | 900 |
Deepwater Poseidon (c) |  |  | 450 |  |  | 82 |  |  | 204 |  |  | 151 |  |  | 38 |  |  | — |  |  | — |  |  | 925 |
Transocean Cassiopeia (d) |  |  | 54 |  |  | 3 |  |  | 1 |  |  | 6 |  |  | 3 |  |  | 12 |  |  | 196 |  |  | 275 |
Ultra-Deepwater drillship TBN1 (e) |  |  | 204 |  |  | 12 |  |  | 1 |  |  | 50 |  |  | 26 |  |  | 61 |  |  | 466 |  |  | 820 |
Transocean Centaurus (d) |  |  | 53 |  |  | 3 |  |  | 1 |  |  | 6 |  |  | 8 |  |  | 12 |  |  | 207 |  |  | 290 |
Transocean Cepheus (d) |  |  | 53 |  |  | 3 |  |  | 1 |  |  | 6 |  |  | 8 |  |  | 11 |  |  | 208 |  |  | 290 |
Ultra-Deepwater drillship TBN2 (e) |  |  | 157 |  |  | 9 |  |  | 1 |  |  | 34 |  |  | 14 |  |  | 36 |  |  | 499 |  |  | 750 |
Transocean Cetus (d) |  |  | 52 |  |  | 2 |  |  | — |  |  | — |  |  | 7 |  |  | 10 |  |  | 214 |  |  | 285 |
Transocean Circinus (d) |  |  | 51 |  |  | 2 |  |  | — |  |  | — |  |  | 4 |  |  | 10 |  |  | 213 |  |  | 280 |
Total |  | $ | 3,453 |  | $ | 959 |  | $ | 332 |  | $ | 394 |  | $ | 108 |  | $ | 152 |  | $ | 2,003 |  | $ | 7,401 |

| (a) |  | The ultra‑deepwater floaters Deepwater Thalassa and Deepwater Proteus were placed into service and commenced operations in February 2016 and May 2016, respectively. In the remainder of the year ending December 31, 2016, we expect to take delivery of additional equipment, ordered but not yet received.

| (b) |  | Deepwater Conqueror, a newbuild ultra‑deepwater drillship under construction at the Daewoo Shipbuilding & Marine Engineering Co. Ltd. shipyard in Korea, is expected to commence operations in the first quarter of 2017.

| (c) |  | Deepwater Pontus and Deepwater Poseidon, two newbuild ultra‑deepwater drillships under construction at the Daewoo Shipbuilding & Marine Engineering Co. Ltd. shipyard in Korea, are expected to commence operations in the fourth quarter of 2017 and the first quarter of 2018, respectively.

| (d) |  | Transocean Cassiopeia, Transocean Centaurus, Transocean Cepheus, Transocean Cetus and Transocean Circinus, five Keppel FELS Super B 400 Bigfoot class design newbuild high‑specification jackups under construction at Keppel FELS’ shipyard in Singapore do not yet have drilling contracts and are expected to be delivered in the first quarter of 2020, the second quarter of 2020, the third quarter of 2020, the fourth quarter of 2020 and the fourth quarter of 2020, respectively. The delivery expectations and the cost projections presented above reflect the terms of our construction agreements, as amended to delay delivery in consideration of current market conditions.

| (e) |  | Our two unnamed dynamically positioned ultra‑deepwater drillships under construction at the Jurong Shipyard Pte Ltd. in Singapore do not yet have drilling contracts and are expected to be delivered in the first quarter of 2020 and the third quarter of 2020, respectively. The delivery expectations and the cost projections presented above reflect the terms of our construction agreements, as amended to delay delivery in consideration of current market conditions.

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 through available cash balances, cash generated from operations and asset sales. We also have available credit under a $3.0 billion unsecured five‑year revolving credit facility, as described below, and may utilize other commercial bank or capital market financings. Economic conditions could impact the availability of these sources of funding.

Dispositions—From time to time, we may also review the possible disposition of non‑strategic drilling units. Considering recent market conditions, we have committed to plans to sell certain lower‑specification drilling units for scrap value. During the nine months ended September 30, 2016, we identified four such drilling units that we have sold or intend to sell for scrap value. During the year ended December 31, 2015, we identified 22 such drilling units that we have sold for scrap value. We continue to evaluate the drilling units in our fleet and may identify additional lower specification drilling units to be sold for scrap value.

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During the nine months ended September 30, 2016, we completed the sale of one deepwater floater and five midwater floaters, along with related equipment, and we received net cash proceeds of $11 million. During the year ended December 31, 2015, we completed the sale of two ultra‑deepwater floaters, six deepwater floaters and nine midwater floaters, along with related equipment, and we received aggregate net cash proceeds of $35 million.

Sources and uses of liquidity

Overview—We expect to use existing cash balances, internally generated cash flows, proceeds from our debt offering, proceeds from the disposal of assets, borrowings under our bank credit agreement or proceeds from the issuance of additional debt to fulfill anticipated obligations, such as capital expenditures, scheduled debt maturities or other payments, such as payments in connection with our Tender Offer (see “Debt tender offer”), repayment of debt due within one year, payments of our Macondo well incident settlement obligations, working capital and other needs in our operations. We may also consider establishing additional credit facilities under credit agreements. Subject in each case to then existing market conditions and to our then expected liquidity needs, among other factors, we may continue to use a portion of our internally generated cash flows to reduce debt prior to scheduled maturities through debt repurchases, either in the open market or in privately negotiated transactions, or through debt redemptions or tender offers. From time to time, we may also use borrowings under our bank credit agreement to maintain liquidity for short‑term cash needs.

Our access to debt and equity markets may be limited due to a variety of events, including, among others, credit rating agency downgrades of our debt ratings, industry conditions, general economic conditions, market conditions and market perceptions of us and our industry. During the year ended December 31, 2015, three credit rating agencies downgraded their credit ratings of our non‑credit enhanced senior unsecured long‑term debt (“Debt Rating”) to Debt Ratings that are below investment grade. During the nine months ended September 30, 2016, three of the credit rating agencies further downgraded our Debt Rating. Such downgrades have caused, and any further downgrades may cause, us to experience increased fees under our credit facility and interest rates under agreements governing certain of our senior notes and may limit our ability to access debt markets. Our ability to access such markets may be severely restricted 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. An economic downturn could have an impact on the lenders participating in our credit facilities or on our customers, causing them to fail to meet their obligations to us.

Our internally generated cash flow is directly related to our business and the market sectors in which we operate. Should the drilling market continue to deteriorate, or should we experience poor results in our operations, cash flow from operations may be reduced. We have, however, continued to generate positive cash flow from operating activities over recent years and expect that such cash flow will continue to be positive over the next year.

Debt issuance—On July 21, 2016, we completed an offering of an aggregate principal amount of $1.25 billion of the 9.00% Senior Notes, and we received aggregate cash proceeds of $1.21 billion, net of initial discount and estimated costs payable by us. We used the majority of the net proceeds from the debt offering to complete the Tender Offer (see “Debt tender offer”). We will pay interest on the 9.00% Senior Notes semiannually on January 15 and July 15 each year, beginning on January 15, 2017.

On October 19, 2016, we completed an offering of an aggregate principal amount of $600 million of the Senior Secured Notes, and we received aggregate cash proceeds of $583 million, net of initial discount and estimated costs payable by us. We will pay interest on the Senior Secured Notes semiannually on April 15 and October 15 of each year, beginning April 15, 2017. Additionally, on each interest payment date, we will be required to redeem, on a pro rata basis an aggregate principal amount of $30 million of the notes at a price equal to 100 percent of the principal amount.

Debt tender offer—On August 1, 2016, we completed the Tender Offer to purchase for cash up to $1.0 billion aggregate principal amount of the Tendered Notes. As a result of the Tender Offer, we received valid tenders from holders of an aggregate principal amount of $981 million of the Tendered Notes, and in the three and nine months ended September 30, 2016, we made an aggregate cash payment of $876 million to settle the Tendered Notes.

Debt repurchases and redemptions—In the nine months ended September 30, 2016, we repurchased in the open market an aggregate principal amount of $365 million of our debt securities for an aggregate cash payment of $320 million. In the year ended December 31, 2015, we repurchased in the open market an aggregate principal amount of $503 million of certain of our debt securities for an aggregate cash payment of $468 million. On July 30, 2015, we redeemed the remaining aggregate principal amount of $893 million of the 4.95% Senior Notes due November 2015 for an aggregate cash payment of $904 million.

Distributions of qualifying additional paid‑in capital—In May 2015, at our annual general meeting, our shareholders approved the distribution of qualifying additional paid‑in capital in the form of a U.S. dollar denominated dividend of $0.60 per outstanding share, payable in four quarterly installments of $0.15 per outstanding share, subject to certain limitations. In May 2015, we recognized a liability of $218 million for the distribution payable, recorded in other current liabilities, with a corresponding entry to additional paid‑in capital. On June 17 and September 23, 2015, we paid the first two installments in the aggregate amount of $109 million to shareholders of record as of May 29 and August 25, 2015. On October 29, 2015, shareholders at our extraordinary general meeting approved the cancellation of the third and fourth installments of the distribution.

In May 2014, at our annual general meeting, our shareholders approved the distribution of qualifying additional paid‑in capital in the form of a U.S. dollar denominated dividend of $3.00 per outstanding share, payable in four quarterly installments, subject to certain

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limitations. On March 18, 2015, we paid the final installment in the aggregate amount of $272 million to shareholders of record as of February 20, 2015.

Litigation settlements and insurance recoveries—On May 20, 2015, we entered into a confidential settlement agreement with BP plc (together with its affiliates, “BP”) to settle various disputes remaining between the parties with respect to the Macondo well incident. Pursuant to the terms of the agreement, we received from BP a cash payment of $125 million in July 2015 to partially reimburse us for legal fees that we incurred. Additionally, in connection with the settlement, BP agreed to discontinue its attempts to recover as an additional insured under our liability insurance program. As a result, we submitted claims to our insurers and, in the year ended December 31, 2015, we received aggregate cash proceeds of $538 million from insurance for recovery of previously incurred losses.

On May 29, 2015, together with the Plaintiffs’ Steering Committee (the “PSC”), we filed a settlement agreement (the “PSC Settlement Agreement”) in which we agreed to pay a total of $212 million, plus up to $25 million for partial reimbursement of attorneys’ fees, to resolve (1) punitive damages claims of private plaintiffs, businesses, and local governments and (2) certain claims that BP had made against us and had assigned to private plaintiffs who previously settled economic damages claims against BP. The PSC Settlement Agreement is subject to approval by the U.S. District Court for the Eastern District of Louisiana (the “MDL Court”) and acceptance by a minimum number of plaintiffs. In June 2016 and August 2015, we made a cash deposit of $25 million and $212 million, respectively, into an escrow account pending approval of the settlement by the MDL Court. As of October 25, 2016, the balance of our escrow account was $237 million.

Effective October 13, 2015, we finalized a settlement agreement with the states of Alabama, Florida, Louisiana, Mississippi, and Texas (collectively, the “States”), pursuant to which the States agreed to release all of their claims against us arising from the Macondo well incident. On October 22, 2015, we made an aggregate cash payment of $35 million to the States.

Pursuant to a cooperation guilty plea agreement by and among the U.S. Department of Justice (“DOJ”) and certain of our affiliates (the “Plea Agreement”), which was accepted by the court on February 14, 2013, we agreed to pay a criminal fine of $100 million and to consent to the entry of an order requiring us to pay $150 million to the National Fish & Wildlife Foundation and $150 million to the National Academy of Sciences in scheduled installments through February 2017. In each of the nine months ended September 30, 2016 and 2015, we made aggregate cash payments of $60 million. The final installment of $60 million is due on or before February 14, 2017.

Pursuant to a civil consent decree by and among the DOJ and certain of our affiliates (“the Consent Decree”), which was approved by the court on February 19, 2013, we agreed to pay a civil penalty totaling $1.0 billion, plus interest at a fixed rate of 2.15 percent. In the three months ended March 31, 2015, we paid the final installment of $204 million, including interest.

Revolving credit facility—In June 2014, we entered into an amended and restated bank credit agreement, which established a $3.0 billion unsecured five‑year revolving credit facility, that is scheduled to expire on June 28, 2019 (the “Five‑Year Revolving Credit Facility”). Among other things, the Five‑Year Revolving Credit Facility includes limitations on creating liens, incurring subsidiary debt, transactions with affiliates, sale/leaseback transactions, mergers and the sale of substantially all assets. The Five‑Year Revolving Credit Facility also includes a covenant imposing a maximum debt to tangible capitalization ratio of 0.6 to 1.0. At September 30, 2016, our debt to tangible capitalization ratio, as defined, was 0.4 to 1.0. In order to borrow or have letters of credit issued under the Five‑Year Revolving Credit Facility, we must, at the time of the borrowing request, not be in default under the bank credit agreements and make certain representations and warranties, including with respect to compliance with laws and solvency, to the lenders, but we are not required to make any representation to the lenders as to the absence of a material adverse effect. Repayment of borrowings under the Five‑Year Revolving Credit Facility is subject to acceleration upon the occurrence of an event of default. We are also subject to various covenants under the indentures pursuant to which our public debt was issued, 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, our capital lease contract or any other debt owed to unaffiliated entities that exceeds $125 million could trigger a default under the Five‑Year Revolving Credit Facility and, if not waived by the lenders, could cause us to lose access to the Five‑Year Revolving Credit Facility.

We may borrow under the Five‑Year Revolving Credit Facility at either (1) the adjusted London Interbank Offered Rate plus a margin (the “Five‑Year Revolving Credit Facility Margin”), which ranges from 1.125 percent to 2.0 percent based on the Debt Rating, or (2) the base rate specified in the credit agreement plus the Five‑Year Revolving Credit Facility Margin, less one percent per annum. Throughout the term of the Five‑Year Revolving Credit Facility, we pay a facility fee on the daily unused amount of the underlying commitment which ranges from 0.15 percent to 0.35 percent depending on our Debt Rating. At October 25, 2016, based on our Debt Rating on that date, the Five‑Year Revolving Credit Facility Margin was 2.0 percent and the facility fee was 0.35 percent. At October 25, 2016, we had no borrowings outstanding, no letters of credit issued, and $3.0 billion of available borrowing capacity under the Five‑Year Revolving Credit Facility.

Noncontrolling interest—In the nine months ended September 30, 2016, Transocean Partners declared and paid an aggregate distribution of $74 million, of which $21 million was paid to the holders of noncontrolling interest. In the year ended December 31, 2015, Transocean Partners declared and paid an aggregate distribution of $100 million to its unitholders, of which $29 million was paid to the holders of noncontrolling interest.

On November 4, 2015, Transocean Partners announced that its board of directors approved a unit repurchase program, authorizing it to repurchase up to $40 million of its publicly held common units. Subject to market conditions, Transocean Partners may repurchase units from time to time in the open market or in privately negotiated transactions. It may suspend or discontinue the program at

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any time. The Merger Agreement restricts Transocean Partners’ ability to repurchase its common units without our consent, and no such repurchases have been made since entering into the agreement. The common units repurchased under the program will be cancelled. As of October 25, 2016, Transocean Partners had repurchased 478,376 of its publicly held common units for an aggregate purchase price of $4 million. At October 25, 2016, we held a 71.3 percent limited liability company interest in Transocean Partners.

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 an amount of our shares for cancellation with an aggregate purchase price of up to CHF 3.5 billion, equivalent to approximately $3.6 billion. On February 12, 2010, our board of directors authorized our management to implement the share repurchase program. At December 31, 2015, we held 2.9 million of our shares. On October 29, 2015, shareholders at our extraordinary general meeting approved the cancellation of all shares that have been repurchased to date under our share repurchase program. The shares repurchased under our share repurchase program were cancelled as of January 7, 2016 upon registration of the cancellation in the commercial register. In the year ended December 31, 2015 and the nine months ended September 30, 2016, we did not purchase any shares under our share repurchase program.

Based upon 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 ratings considerations and other factors, we may elect to retain cash, reduce debt, make capital investments or acquisitions or otherwise use cash for general corporate purposes, and consequently, we may elect not to repurchase any additional shares under this program. Decisions regarding the amount, if any, and timing of any share repurchases will be made from time to time based upon 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. At October 25, 2016, the authorization remaining under the share repurchase program was for the repurchase of up to CHF 3.2 billion, equivalent to approximately $3.3 billion, of our outstanding shares.

Contractual obligations—Except as disclosed below, there have been no material changes to the contractual obligations as previously disclosed in “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our annual report on Form 10‑K for the year ended December 31, 2015. As of September 30, 2016, certain of our contractual obligations stated at face value were as follows:

|  |  |  |  | For the twelve months ending September 30, |  |  |  |
|  | Total |  | 2017 |  | 2018 - 2019 |  | 2020 - 2021 |  | Thereafter |
|  | (in millions) |
Contractual obligations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt |  | $ | 7,737 |  | $ | 1,044 |  | $ | 1,497 |  | $ | 519 |  | $ | 4,677 |
Interest on debt |  |  | 3,920 |  |  | 435 |  |  | 601 |  |  | 541 |  |  | 2,343 |

Other commercial commitments—As of September 30, 2016, there have been no material changes to the commercial commitments as previously disclosed in “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our annual report on Form 10‑K for the year ended December 31, 2015.

Contingencies and Uncertainties

Macondo well incident

On April 22, 2010, the ultra‑deepwater floater Deepwater Horizon sank after a blowout of the Macondo well caused a fire and explosion on the rig off the coast of Louisiana. At the time of the explosion, Deepwater Horizon was contracted to BP. Litigation commenced shortly after the incident, and most claims against us were consolidated by the U.S. Judicial Panel on Multidistrict Litigation and transferred to the MDL Court. A significant portion of the contingencies arising from the Macondo well incident has now been resolved as a result of settlements with the DOJ, BP, the PSC and the States. We believe the remaining most notable claims against us arising from the Macondo well incident are the 36 settlement class opt‑outs from the PSC Settlement Agreement. We can provide no assurance as to the outcome of the remaining claims arising from the Macondo well incident, the timing of any upcoming appeal or further rulings, or that we will not enter into additional settlements as to some or all of the remaining matters related to the Macondo well incident. See Notes to Condensed Consolidated Financial Statements—Note 11—Contingencies.

Tax matters

We conduct operations through our various subsidiaries in a number of countries throughout the world. Each country has its own tax regimes with varying nominal rates, deductions and tax attributes. From time to time, we may identify changes to previously evaluated tax positions that could result in adjustments to our recorded assets and liabilities. In March 2016, the U.K. publicly announced its 2016 Budget and Finance Bill. These initial tax reform proposals included measures that would deny tax deductions or require inclusion of taxable income for certain cross‑border structure arrangements and transactions. On September 15, 2016, the final 2016 Finance Act received Royal Assent and was enacted into law. The tax reforms in the initial proposals that could have resulted in a higher effective tax rate and increased tax costs due to our controlling interest in Transocean Partners were not included in the final 2016 Finance Act.

We file federal and local tax returns in several jurisdictions throughout the world. Tax authorities in certain jurisdictions are examining our tax returns and in some cases have issued assessments. We are defending our tax positions in those jurisdictions. While

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we cannot predict or provide assurance as to the final outcome of these proceedings, we do not expect the ultimate liability to have a material adverse effect on our consolidated statement of financial position or results of operations, although it may have a material adverse effect on our consolidated cash flows. See Notes to Condensed Consolidated Financial Statements—Note 6—Income Taxes.

Regulatory matters

For a description of regulatory and environmental matters relating to the Macondo well incident, please see “—Macondo well incident.”

Other matters

In addition, from time to time, we receive inquiries from governmental regulatory agencies regarding our operations around the world, including inquiries with respect to various tax, environmental, regulatory and compliance matters. To the extent appropriate under the circumstances, we investigate such matters, respond to such inquiries and cooperate with the regulatory agencies.

Critical Accounting Policies and Estimates

Our discussion and analysis of our financial condition and results of operations are based upon our condensed consolidated financial statements. This discussion should be read in conjunction with disclosures included in the notes to our condensed consolidated financial statements related to estimates, contingencies and other accounting policies. Significant accounting policies are discussed in Note 2 to our condensed consolidated financial statements in this quarterly report on Form 10‑Q and in Note 2 to our consolidated financial statements in our annual report on Form 10‑K for the year ended December 31, 2015.

For a discussion of the critical accounting policies and estimates that we use in the preparation of our condensed consolidated financial statements, see “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates” in our annual report on Form 10‑K for the year ended December 31, 2015. We have discussed the development, selection and disclosure of these critical accounting policies and estimates with the audit committee of our board of directors. During the nine months ended September 30, 2016, there have been no material changes to the types of judgments, assumptions and estimates upon which our critical accounting estimates are based.

New Accounting Pronouncements

For a discussion of the new accounting pronouncements that have had or are expected to have an effect on our condensed consolidated financial statements, see Notes to Condensed Consolidated Financial Statements—Note 3—New Accounting Pronouncements in this quarterly report on Form 10‑Q and “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our annual report on Form 10‑K for the year ended December 31, 2015.

Item 3.Quantitative and Qualitative Disclosures About Market Risk

We are exposed to interest rate risk and currency exchange rate risk, primarily associated with our long‑term and short‑term debt, our restricted cash balances and investments and our international operations. For a discussion of our interest rate risk and currency exchange rate risk, see “Item 7A. Quantitative and Qualitative Disclosures About Market Risk” in our annual report on Form 10‑K for the year ended December 31, 2015. There have been no material changes to these previously reported matters during the nine months ended September 30, 2016.

Item 4.Controls and Procedures

Disclosure controls and procedures—We carried out an evaluation, under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures, as defined in the United States Securities Exchange Act of 1934, as amended (the “Exchange Act”), Rules 13a‑15 and 15d‑15, were effective as of September 30, 2016 to provide reasonable assurance that information required to be disclosed in our reports filed or submitted under the Exchange Act is (1) accumulated and communicated to our management, including our Chief Executive Officer and our Chief Financial Officer, to allow timely decisions regarding required disclosure and (2) recorded, processed, summarized and reported within the time periods specified in the United States Securities and Exchange Commission’s rules and forms.

Internal control over financial reporting—There were no changes to our internal control over financial reporting during the quarter ended September 30, 2016 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II.OTHER INFORMATION

Item 1.Legal Proceedings

We have certain actions, claims and other matters pending as discussed and reported in “Part II. Item 8. Financial Statements and Supplementary Data—Notes to Consolidated Financial Statements—Note 14—Commitments and Contingencies” and “Part II. Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Contingencies and Uncertainties—Macondo well incident” in our annual report on Form 10‑K for the year ended December 31, 2015. We are also involved in various tax matters as described in “Part II. Financial Statements and Supplementary Data—Notes to Consolidated Financial Statements—Note 6—Income Taxes” and in “Part II. Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Contingencies and Uncertainties—Tax matters” in our annual report on Form 10‑K for the year ended December 31, 2015. All such actions, claims, tax and other matters are incorporated herein by reference.

As of September 30, 2016, we were also involved in a number of other lawsuits, claims and disputes, which have arisen in the ordinary course of our business and for which we do not expect the liability, if any, to have a material adverse effect on our current consolidated statement of financial position, results of operations or cash flows. We cannot predict with certainty the outcome or effect of any of the matters referred to above or of any such other pending or threatened litigation or legal proceedings. There can be no assurance that our beliefs or expectations as to the outcome or effect of any lawsuit or claim or dispute will prove correct and the eventual outcome of these matters could materially differ from management’s current estimates.

In addition to the legal proceedings described above, we may from time to time identify other matters that we monitor through our compliance program and in response to events arising generally within our industry and in the markets where we do business. For example, in the year ended December 31, 2015, we began investigating statements made by a former employee of Petróleo Brasileiro S.A. (“Petrobras”) related to the award to us of a drilling services contract in Brazil. These statements were made in connection with an ongoing criminal investigation by the Brazilian authorities into Petrobras and certain other companies and individuals. We have completed our internal investigation, and we have not identified any wrongdoing by any of our employees or agents in connection with our business. We have voluntarily met with governmental authorities in the United States to discuss the statements made by the former Petrobras employee and our internal investigation as well as our findings. We will continue to investigate these types of allegations and cooperate with governmental authorities. Through the process of monitoring and proactive investigation, we strive to ensure no violation of our policies, Code of Integrity or law has, or will, occur; however, there can be no assurance as to the outcome of these matters.

Item 1A.Risk Factors

There have been no material changes to the risk factors as previously disclosed in “Item 1A. Risk Factors” in our annual report on Form 10‑K for the year ended December 31, 2015 and in “Item 1A. Risk Factors” in our quarterly report on Form 10‑Q for the quarterly period ended June 30, 2016.

Item 2.Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities

|  |  |  |  |  |  | Total |  | Maximum Number |
|  |  |  |  |  |  | Number of Shares |  | (or Approximate Dollar Value) |
|  | Total Number |  | Average |  | Purchased as Part |  | of Shares that May Yet Be Purchased |
|  | of Shares |  | Price Paid |  | of Publicly Announced |  | Under the Plans or Programs |
Period |  | Purchased |  | Per Share |  | Plans or Programs |  | (in millions) |
July 2016 |  | — |  | $ | — |  | — |  | $ | 3.338 |
August 2016 |  | — |  |  | — |  | — |  |  | 3.338 |
September 2016 |  | — |  |  | — |  | — |  |  | 3.338 |
Total |  | — |  | $ | — |  | — |  | $ | 3.338 |

Share repurchase program

In May 2009, at the annual general meeting of Transocean Ltd., our shareholders approved and authorized our board of directors, at its discretion, to repurchase an amount of our shares for cancellation with an aggregate purchase price of up to CHF 3.5 billion, equivalent to approximately $3.6 billion. On February 12, 2010, our board of directors authorized our management to implement the share repurchase program. Since inception of the share repurchase program, we repurchased 2,863,267 of our shares under the share repurchase program for an aggregate cost of $240 million, equivalent to an average cost of $83.74 per share, and at December 31, 2015, we held such shares in treasury. On October 29, 2015, shareholders at our extraordinary general meeting approved the cancellation of all shares that have been repurchased to date under our share repurchase program. The cancellation of our shares held in treasury became effective as of January 7, 2016 upon registration of the cancellation in the commercial register. Based upon our ongoing capital requirements, cash flow generation and general market conditions, among other factors, we may elect not to repurchase any additional shares under this program. See “Part I. Item 2. Management’s Discussion and Analysis of Financial Condition and Operating Results—Liquidity and Capital Resources—Sources and uses of liquidity.”

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Item 4.Mine Safety Disclosures

Not applicable.

Item 6 Exhibits

| (a) |  | Exhibits

The following exhibits are filed in connection with this Report:

Number |  | Description
|  | 2.1 |  | Agreement and Plan of Merger among Transocean Ltd., Transocean Partners Holdings Ltd., TPHL Holdings LLC and Transocean Partners LLC, dated July 31, 2016 (incorporated by reference to Exhibit 2.1 to Transocean Ltd.’s current report on Form 8‑K (Commission File No. 000‑53533) filed on August 1, 2016)
|  | 3.1 |  | Articles of Association of Transocean Ltd. incorporated by reference to Exhibit 3.1 to Transocean Ltd.’s quarterly report on Form 10‑Q (Commission File No. 000‑53533) for the quarterly period ended June 30, 2016)
|  | 3.2 |  | Organizational Regulations of Transocean Ltd. (incorporated by reference to Exhibit 3.2 to Transocean Ltd.’s quarterly report on Form 10‑Q (Commission File No. 000‑53533) for the quarterly period ended September 30, 2014)
|  | 4.1 |  | Indenture, dated as of July 21, 2016, by and among Transocean Inc., the Guarantors and Wells Fargo Bank, National Association (incorporated by reference to Exhibit 4.1 to Transocean Ltd.’s current report on Form 8‑K (Commission File No. 000‑53533) filed on July 22, 2016)
† |  | 4.2 |  | Indenture, dated as of October 19, 2016, by and among Transocean Phoenix 2 Limited, Transocean Ltd., Transocean Inc., Triton Capital II GmbH and Wells Fargo Bank, National Association
† |  | 10.1 |  | Employment Agreement with Jeremy D. Thigpen effective September 1, 2016
† |  | 10.2 |  | Employment Agreement with Mark L. Mey effective September 1, 2016
† |  | 31.1 |  | CEO Certification Pursuant to Section 302 of the Sarbanes‑Oxley Act of 2002
† |  | 31.2 |  | CFO Certification Pursuant to Section 302 of the Sarbanes‑Oxley Act of 2002
† |  | 32.1 |  | CEO Certification Pursuant to Section 906 of the Sarbanes‑Oxley Act of 2002
† |  | 32.2 |  | CFO Certification Pursuant to Section 906 of the Sarbanes‑Oxley Act of 2002
† |  | 101 |  | Interactive data files

† |  |  |  | Filed herewith.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned; thereunto duly authorized, on November 2, 2016.

TRANSOCEAN LTD.
By: | /s/ Mark L. Mey |
| Mark L. Mey
| Executive Vice President, Chief Financial Officer
| (Principal Financial Officer)
By: | /s/ David Tonnel |
| David Tonnel
| Senior Vice President, Supply Chain and Corporate Controller
| (Principal Accounting Officer)

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