10-Q 1 nbr-20190331x10q.htm 10-Q

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UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period Ended March 31, 2019

Commission File Number: 001-32657

NABORS INDUSTRIES LTD.

(Exact name of registrant as specified in its charter)

Bermuda |  | 98-0363970
(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)

Crown House

Second Floor

4 Par-la-Ville Road

Hamilton, HM08

Bermuda

(Address of principal executive office)

(441) 292-1510

(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 every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

YES ☒ NO ☐

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

Large Accelerated Filer ☒ |  | Accelerated Filer ☐
Non-accelerated Filer ☐ |  | Smaller reporting company ☐
|  | Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

YES ☐ NO ☒

The number of common shares, par value $.001 per share, outstanding as of April 26, 2019 was 363,156,097, excluding 52,800,203 common shares held by our subsidiaries, or 415,956,300 in the aggregate.

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NABORS INDUSTRIES LTD. AND SUBSIDIARIES

Index

PART I FINANCIAL INFORMATION
Item 1. | Financial Statements |
| Condensed Consolidated Balance Sheets as of March 31, 2019 and December 31, 2018 | 3
| Condensed Consolidated Statements of Income (Loss) for the Three Months Ended March 31, 2019 and 2018 | 4
| Condensed Consolidated Statements of Comprehensive Income (Loss) for the Three Months Ended March 31, 2019 and 2018 | 5
| Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2019 and 2018 | 6
| Condensed Consolidated Statements of Changes in Equity for the Three Months Ended March 31, 2019 and 2018 | 7
| Notes to Condensed Consolidated Financial Statements | 8
Item 2. | Management’s Discussion and Analysis of Financial Condition and Results of Operations | 35
Item 3. | Quantitative and Qualitative Disclosures About Market Risk | 41
Item 4. | Controls and Procedures | 41
PART II OTHER INFORMATION
Item 1. | Legal Proceedings | 42
Item 1A. | Risk Factors | 42
Item 2. | Unregistered Sales of Equity Securities and Use of Proceeds | 42
Item 3. | Defaults Upon Senior Securities | 43
Item 4. | Mine Safety Disclosures | 43
Item 5. | Other Information | 43
Item 6. | Exhibits | 43
Signatures | 44

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NABORS INDUSTRIES LTD. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

|  | March 31, |  | December 31, |
|  | 2019 |  | 2018 |
|  | (In thousands, except per |
|  | share amounts) |
ASSETS |  |  |  |  |  |  |
Current assets: |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 429,127 |  | $ | 447,766 |
Short-term investments |  |  | 40,590 |  |  | 34,036 |
Accounts receivable, net |  |  | 743,528 |  |  | 756,320 |
Inventory, net |  |  | 166,139 |  |  | 165,587 |
Assets held for sale |  |  | 12,330 |  |  | 12,250 |
Other current assets |  |  | 164,189 |  |  | 177,604 |
Total current assets |  |  | 1,555,903 |  |  | 1,593,563 |
Property, plant and equipment, net |  |  | 5,399,514 |  |  | 5,467,870 |
Goodwill |  |  | 184,104 |  |  | 183,914 |
Deferred income taxes |  |  | 344,531 |  |  | 345,091 |
Other long-term assets |  |  | 289,632 |  |  | 263,506 |
Total assets (1) |  | $ | 7,773,684 |  | $ | 7,853,944 |
LIABILITIES AND EQUITY |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |
Current portion of debt |  | $ | 850 |  | $ | 561 |
Trade accounts payable |  |  | 399,802 |  |  | 392,843 |
Accrued liabilities |  |  | 298,059 |  |  | 417,912 |
Income taxes payable |  |  | 26,100 |  |  | 20,761 |
Current lease liabilities |  |  | 10,991 |  |  | — |
Total current liabilities |  |  | 735,802 |  |  | 832,077 |
Long-term debt |  |  | 3,677,580 |  |  | 3,585,884 |
Other long-term liabilities |  |  | 280,591 |  |  | 274,485 |
Deferred income taxes |  |  | 19,749 |  |  | 6,311 |
Total liabilities (1) |  |  | 4,713,722 |  |  | 4,698,757 |
Commitments and contingencies (Note 7) |  |  |  |  |  |  |
Redeemable noncontrolling interest in subsidiary (Note 3) |  |  | 409,923 |  |  | 404,861 |
Equity: |  |  |  |  |  |  |
Shareholders’ equity: |  |  |  |  |  |  |
Preferred shares, par value $0.001 per share: |  |  |  |  |  |  |
Series A 6% Cumulative Mandatory Convertible; $50 per share liquidation preference; issued 5,750 |  |  | 6 |  |  | 6 |
Common shares, par value $0.001 per share: |  |  |  |  |  |  |
Authorized common shares 800,000; issued 415,916 and 409,652, respectively |  |  | 416 |  |  | 410 |
Capital in excess of par value |  |  | 3,400,110 |  |  | 3,392,937 |
Accumulated other comprehensive income (loss) |  |  | (19,987) |  |  | (29,325) |
Retained earnings |  |  | 519,810 |  |  | 650,842 |
Less: treasury shares, at cost, 52,800 and 52,800 common shares, respectively |  |  | (1,314,020) |  |  | (1,314,020) |
Total shareholders’ equity |  |  | 2,586,335 |  |  | 2,700,850 |
Noncontrolling interest |  |  | 63,704 |  |  | 49,476 |
Total equity |  |  | 2,650,039 |  |  | 2,750,326 |
Total liabilities and equity |  | $ | 7,773,684 |  | $ | 7,853,944 |

| (1) |  | The condensed consolidated balance sheet as of March 31, 2019 and December 31, 2018 include assets and liabilities of variable interest entities. See Note 3—Joint Ventures for additional information.

The accompanying notes are an integral part of these condensed consolidated financial statements.

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NABORS INDUSTRIES LTD. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)

(Unaudited)

|  |  | Three Months Ended |
|  |  | March 31, |
|  |  | 2019 |  | 2018 |
| (In thousands, except per share amounts)
Revenues and other income: |  |  |  |  |  |  |  |
Operating revenues |  |  | $ | 799,640 |  | $ | 734,194 |
Earnings (losses) from unconsolidated affiliates |  |  |  | (5) |  |  | 2 |
Investment income (loss) |  |  |  | 9,677 |  |  | 465 |
Total revenues and other income |  |  |  | 809,312 |  |  | 734,661 |
Costs and other deductions: |  |  |  |  |  |  |  |
Direct costs |  |  |  | 520,957 |  |  | 475,403 |
General and administrative expenses |  |  |  | 68,167 |  |  | 74,571 |
Research and engineering |  |  |  | 13,520 |  |  | 15,806 |
Depreciation and amortization |  |  |  | 210,391 |  |  | 213,448 |
Interest expense |  |  |  | 52,352 |  |  | 61,386 |
Other, net |  |  |  | 17,502 |  |  | 14,089 |
Total costs and other deductions |  |  |  | 882,889 |  |  | 854,703 |
Income (loss) from continuing operations before income taxes |  |  |  | (73,577) |  |  | (120,042) |
Income tax expense (benefit): |  |  |  |  |  |  |  |
Current |  |  |  | 15,862 |  |  | 8,771 |
Deferred |  |  |  | 13,937 |  |  | 14,774 |
Total income tax expense (benefit) |  |  |  | 29,799 |  |  | 23,545 |
Income (loss) from continuing operations, net of tax |  |  |  | (103,376) |  |  | (143,587) |
Income (loss) from discontinued operations, net of tax |  |  |  | (157) |  |  | (75) |
Net income (loss) |  |  |  | (103,533) |  |  | (143,662) |
Less: Net (income) loss attributable to noncontrolling interest |  |  |  | (14,176) |  |  | (539) |
Net income (loss) attributable to Nabors |  |  |  | (117,709) |  |  | (144,201) |
Less: Preferred stock dividend |  |  |  | (4,313) |  |  | — |
Net income (loss) attributable to Nabors common shareholders |  |  | $ | (122,022) |  | $ | (144,201) |
Amounts attributable to Nabors common shareholders: |  |  |  |  |  |  |  |
Net income (loss) from continuing operations |  |  | $ | (121,865) |  | $ | (144,126) |
Net income (loss) from discontinued operations |  |  |  | (157) |  |  | (75) |
Net income (loss) attributable to Nabors common shareholders |  |  | $ | (122,022) |  | $ | (144,201) |
Earnings (losses) per share: |  |  |  |  |  |  |  |
Basic from continuing operations |  |  | $ | (0.36) |  | $ | (0.46) |
Basic from discontinued operations |  |  |  | — |  |  | — |
Total Basic |  |  | $ | (0.36) |  | $ | (0.46) |
Diluted from continuing operations |  |  | $ | (0.36) |  | $ | (0.46) |
Diluted from discontinued operations |  |  |  | — |  |  | — |
Total Diluted |  |  | $ | (0.36) |  | $ | (0.46) |
Weighted-average number of common shares outstanding: |  |  |  |  |  |  |  |
Basic |  |  |  | 350,764 |  |  | 308,788 |
Diluted |  |  |  | 350,764 |  |  | 308,788 |

The accompanying notes are an integral part of these condensed consolidated financial statements.

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NABORS INDUSTRIES LTD. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(Unaudited)

|  |  | Three Months Ended |  |
|  |  | March 31, |  |
|  |  | 2019 |  | 2018 |  |
| (In thousands) |
Net income (loss) attributable to Nabors |  |  | $ | (117,709) |  | $ | (144,201) |  |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |  |  |
Translation adjustment attributable to Nabors |  |  |  | 9,190 |  |  | (9,343) |  |
Pension liability amortization and adjustment |  |  |  | 54 |  |  | 54 |  |
Unrealized gains (losses) and amortization on cash flow hedges |  |  |  | 140 |  |  | 140 |  |
Adoption of ASU No. 2016-01 |  |  |  | — |  |  | (9,144) |  |
Other comprehensive income (loss), before tax |  |  |  | 9,384 |  |  | (18,293) |  |
Income tax expense (benefit) related to items of other comprehensive income (loss) |  |  |  | 46 |  |  | 43 |  |
Other comprehensive income (loss), net of tax |  |  |  | 9,338 |  |  | (18,336) |  |
Comprehensive income (loss) attributable to Nabors |  |  |  | (108,371) |  |  | (162,537) |  |
Net income (loss) attributable to noncontrolling interest |  |  |  | 14,176 |  |  | 539 |  |
Translation adjustment attributable to noncontrolling interest |  |  |  | 52 |  |  | (96) |  |
Comprehensive income (loss) attributable to noncontrolling interest |  |  |  | 14,228 |  |  | 443 |  |
Comprehensive income (loss) |  |  | $ | (94,143) |  | $ | (162,094) |  |

The accompanying notes are an integral part of these condensed consolidated financial statements.

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NABORS INDUSTRIES LTD. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

|  | Three Months Ended March 31, |
|  | 2019 |  | 2018 |
|  | (In thousands) |
Cash flows from operating activities: |  |  |  |  |  |  |
Net income (loss) |  | $ | (103,533) |  | $ | (143,662) |
Adjustments to net income (loss): |  |  |  |  |  |  |
Depreciation and amortization |  |  | 210,397 |  |  | 214,008 |
Deferred income tax expense (benefit) |  |  | 13,949 |  |  | 14,361 |
Impairments and other charges |  |  | 82 |  |  | — |
Amortization of debt discount and deferred financing costs |  |  | 7,730 |  |  | 7,302 |
Losses (gains) on debt buyback |  |  | (2,667) |  |  | — |
Losses (gains) on long-lived assets, net |  |  | 3,633 |  |  | 2,257 |
Losses (gains) on investments, net |  |  | (7,688) |  |  | 723 |
Provision (recovery) of bad debt |  |  | (419) |  |  | (3,400) |
Share-based compensation |  |  | 8,424 |  |  | 8,628 |
Foreign currency transaction losses (gains), net |  |  | 8,548 |  |  | 2,522 |
Noncontrolling interest |  |  | (14,176) |  |  | (540) |
Other |  |  | 212 |  |  | 166 |
Changes in operating assets and liabilities, net of effects from acquisitions: |  |  |  |  |  |  |
Accounts receivable |  |  | 14,914 |  |  | (34,381) |
Inventory |  |  | (685) |  |  | (7,835) |
Other current assets |  |  | 13,458 |  |  | 22,600 |
Other long-term assets |  |  | (23,907) |  |  | 6,011 |
Trade accounts payable and accrued liabilities |  |  | (95,669) |  |  | (143,050) |
Income taxes payable |  |  | 6,107 |  |  | 836 |
Other long-term liabilities |  |  | 31,144 |  |  | (28,229) |
Net cash (used for) provided by operating activities |  |  | 69,854 |  |  | (81,683) |
Cash flows from investing activities: |  |  |  |  |  |  |
Purchases of investments |  |  | (4,221) |  |  | (676) |
Sales and maturities of investments |  |  | 1,134 |  |  | 1,148 |
Cash paid for acquisition of businesses, net of cash acquired |  |  | (2,929) |  |  | — |
Capital expenditures |  |  | (141,070) |  |  | (94,026) |
Proceeds from sales of assets and insurance claims |  |  | 2,642 |  |  | 3,076 |
Net cash (used for) provided by investing activities |  |  | (144,444) |  |  | (90,478) |
Cash flows from financing activities: |  |  |  |  |  |  |
Proceeds from issuance of long-term debt |  |  | — |  |  | 800,000 |
Debt issuance costs |  |  | (35) |  |  | (12,928) |
Proceeds from revolving credit facilities |  |  | 180,000 |  |  | 615,000 |
Reduction in revolving credit facilities |  |  | (50,000) |  |  | (680,000) |
Reduction in long-term debt |  |  | (43,540) |  |  | (460,837) |
Dividends to common and preferred shareholders |  |  | (25,765) |  |  | (17,148) |
Proceeds from (payment for) commercial paper |  |  | — |  |  | (40,000) |
Proceeds from (payments for) short-term borrowings |  |  | 289 |  |  | 194 |
Other |  |  | (1,493) |  |  | (2,245) |
Net cash provided by financing activities |  |  | 59,456 |  |  | 202,036 |
Effect of exchange rate changes on cash and cash equivalents |  |  | (2,791) |  |  | (867) |
Net increase (decrease) in cash and cash equivalents and restricted cash |  |  | (17,925) |  |  | 29,008 |
Cash and cash equivalents and restricted cash, beginning of period |  |  | 451,080 |  |  | 342,029 |
Cash and cash equivalents and restricted cash, end of period |  | $ | 433,155 |  | $ | 371,037 |
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH |  |  |  |  |  |  |
Cash and cash equivalents, beginning of period |  |  | 447,766 |  |  | 336,997 |
Restricted cash, beginning of period |  |  | 3,314 |  |  | 5,032 |
Cash and cash equivalents and restricted cash, beginning of period |  | $ | 451,080 |  | $ | 342,029 |
Cash and cash equivalents, end of period |  |  | 429,127 |  |  | 367,039 |
Restricted cash, end of period |  |  | 4,028 |  |  | 3,998 |
Cash and cash equivalents and restricted cash, end of period |  | $ | 433,155 |  | $ | 371,037 |

The accompanying notes are an integral part of these condensed consolidated financial statements.

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NABORS INDUSTRIES LTD. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(Unaudited)

|  | Mandatory Convertible |  |  |  |  |  |  | Capital |  | Accumulated |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Preferred Shares |  | Common Shares |  | in Excess |  | Other |  |  |  |  |  |  |  | Non- |  |  |  |
|  |  |  | Par |  |  |  | Par |  | of Par |  | Comprehensive |  | Retained |  | Treasury |  | controlling |  | Total |
(In thousands) |  | Shares |  | Value |  | Shares |  | Value |  | Value |  | Income |  | Earnings |  | Shares |  | Interest |  | Equity |
As of December 31, 2017 |  | — |  | $ | — |  | 367,510 |  | $ | 368 |  | $ | 2,791,129 |  | $ | 11,185 |  | $ | 1,423,154 |  | $ | (1,314,020) |  | $ | 26,957 |  | $ | 2,938,773 |
Net income (loss) |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | — |  |  | (144,201) |  |  | — |  |  | 539 |  |  | (143,662) |
Dividends to shareholders ($0.06 per share) |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | — |  |  | (19,050) |  |  | — |  |  | — |  |  | (19,050) |
Other comprehensive income (loss), net of tax |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | (18,336) |  |  | — |  |  | — |  |  | (96) |  |  | (18,432) |
Issuance of common shares for stock options exercised, net of surrender of unexercised stock options |  | — |  |  | — |  | — |  |  | — |  |  | 8,628 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 8,628 |
Adoption of ASU No. 2016-01 |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | — |  |  | 9,144 |  |  | — |  |  | — |  |  | 9,144 |
Adoption of ASU No. 2016-16 |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | — |  |  | (34,132) |  |  | — |  |  | — |  |  | (34,132) |
Accrued distribution on redeemable noncontrolling interest in subsidiary |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | — |  |  | (2,399) |  |  | — |  |  | — |  |  | (2,399) |
Other |  | — |  |  | — |  | 2,810 |  |  | 2 |  |  | (1,864) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,862) |
As of March 31, 2018 |  | — |  | $ | — |  | 370,320 |  | $ | 370 |  | $ | 2,797,893 |  | $ | (7,151) |  | $ | 1,232,516 |  | $ | (1,314,020) |  | $ | 27,400 |  | $ | 2,737,008 |
As of December 31, 2018 |  | 5,750 |  | $ | 6 |  | 409,652 |  | $ | 410 |  | $ | 3,392,937 |  | $ | (29,325) |  | $ | 650,842 |  | $ | (1,314,020) |  | $ | 49,476 |  | $ | 2,750,326 |
Net income (loss) |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | — |  |  | (117,709) |  |  | — |  |  | 14,176 |  |  | (103,533) |
Dividends to common shareholders ($0.01 per share) |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | — |  |  | (3,947) |  |  | — |  |  | — |  |  | (3,947) |
Dividends to preferred shareholders ($0.75 per share) |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | — |  |  | (4,313) |  |  | — |  |  | — |  |  | (4,313) |
Other comprehensive income (loss), net of tax |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | 9,338 |  |  | — |  |  | — |  |  | 52 |  |  | 9,390 |
Share-based compensation |  | — |  |  | — |  | — |  |  | — |  |  | 8,424 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 8,424 |
Accrued distribution on redeemable noncontrolling interest in subsidiary |  | — |  |  | — |  | — |  |  | — |  |  | — |  |  | — |  |  | (5,063) |  |  | — |  |  | — |  |  | (5,063) |
Other |  | — |  |  | — |  | 6,264 |  |  | 6 |  |  | (1,251) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,245) |
As of March 31, 2019 |  | 5,750 |  | $ | 6 |  | 415,916 |  | $ | 416 |  | $ | 3,400,110 |  | $ | (19,987) |  | $ | 519,810 |  | $ | (1,314,020) |  | $ | 63,704 |  | $ | 2,650,039 |

The accompanying notes are an integral part of these condensed consolidated financial statements.

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Nabors Industries Ltd. and Subsidiaries

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Note 1 Nature of Operations

Unless the context requires otherwise, references in this report to “we,” “us,” “our,” “the Company,” or “Nabors” mean Nabors Industries Ltd., together with our subsidiaries where the context requires. References in this report to “Nabors Delaware” mean Nabors Industries, Inc., a wholly owned subsidiary of Nabors.

Our business is comprised of our global land-based and offshore drilling rig operations and other rig related services and technologies, consisting of equipment manufacturing, rig instrumentation and optimization software. We also specialize in tubular services, wellbore placement solutions and are a leading provider of directional drilling and MWD systems and services

With operations in approximately 25 countries, we are a global provider of drilling and drilling-related services for land-based and offshore oil and natural gas wells, with a fleet of rigs and drilling-related equipment which, as of March 31, 2019 included:

| · |  | 378 actively marketed rigs for land-based drilling operations in the United States, Canada and approximately 18 other countries throughout the world; and

| · |  | 33 actively marketed rigs for offshore drilling operations in the United States and multiple international markets.

Note 2 Summary of Significant Accounting Policies

Interim Financial Information

The accompanying unaudited condensed consolidated financial statements of Nabors have been prepared in conformity with generally accepted accounting principles in the United States (“U.S. GAAP”). Pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”), certain information and footnote disclosures normally included in annual financial statements prepared in accordance with U.S. GAAP have been omitted. Therefore, these financial statements should be read together with our annual report on Form 10-K for the year ended December 31, 2018 (“2018 Annual Report”). In management’s opinion, the unaudited condensed consolidated financial statements contain all adjustments necessary to state fairly our financial position as of March 31, 2019 and the results of operations, comprehensive income (loss), cash flows and changes in equity for the periods presented herein. Interim results for the three months ended March 31, 2019 may not be indicative of results that will be realized for the full year ending December 31, 2019.

Principles of Consolidation

Our condensed consolidated financial statements include the accounts of Nabors, as well as all majority owned and non-majority owned subsidiaries required to be consolidated under U.S. GAAP. All significant intercompany accounts and transactions are eliminated in consolidation.

In addition to the consolidation of our majority owned subsidiaries, we also consolidate variable interest entities (“VIE”) when we are determined to be the primary beneficiary of a VIE. Determination of the primary beneficiary of a VIE is based on whether an entity has (1) the power to direct activities that most significantly impact the economic performance of the VIE and (2) the obligation to absorb losses or the right to receive benefits of the VIE that could potentially be significant to the VIE. Our joint venture, SANAD, which is equally owned by Saudi Aramco and Nabors, has been consolidated. As we have the power to direct activities that most significantly impact SANAD’s economic performance, including operations, maintenance and certain sourcing and procurement, we have determined Nabors to be the primary beneficiary. See Note 3—Joint Ventures.

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Inventory

Inventory is stated at the lower of cost or net realizable value. Cost is determined using the first-in, first-out or weighted-average cost methods and includes the cost of materials, labor and manufacturing overhead. Inventory included the following:

|  | March 31, |  | December 31, |
|  | 2019 |  | 2018 |
|  | (In thousands) |
Raw materials |  | $ | 119,480 |  | $ | 116,840 |
Work-in-progress |  |  | 12,877 |  |  | 20,329 |
Finished goods |  |  | 33,782 |  |  | 28,418 |
|  | $ | 166,139 |  | $ | 165,587 |

Recently Adopted Accounting Pronouncements

In February 2016, the FASB issued ASU No. 2016-02, Leases, relating to leases to increase transparency and comparability among companies. This standard requires that all leases with an initial term greater than one year be recorded on the balance sheet as an asset and a lease liability. Additionally, this standard requires disclosures designed to give financial statement users information on the amount, timing, and uncertainty of cash flows arising from leases. We adopted this guidance under the modified retrospective approach as of January 1, 2019. We preliminarily determined that our drilling contracts contained a lease component, and the adoption would require us to separately recognize revenue associated with the lease and services components. In July 2018, the FASB issued ASU No. 2018-11, which provides a practical expedient that allows entities to combine lease and non-lease components where the revenue recognition pattern is the same and where the lease component, when accounted for separately, would be considered an operating lease. Our drilling contracts contain a lease component related to the underlying drilling equipment, in addition to the service component provided by our crews and our expertise to operate such drilling equipment. We have determined that the non-lease service component of our drilling contracts is the predominant element of the combined component and will account for the combined components as a single performance obligation under Topic 606, Revenue from Contracts with Customers. We have elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows us to carry forward the historical accounting relating to lease identification and classification for existing leases upon adoption. With respect to leases whereby we are the lessee, we recognized upon adoption on January 1, 2019 lease liabilities and offsetting "right of use" assets of approximately $33.1 million based on the present value of the remaining minimum rental payments. See Note 12 — Leases.

Recent Accounting Pronouncements Not Yet Adopted

In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017. In addition, the standard requires certain disclosures regarding stranded tax effects. This guidance is effective for public companies for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. We are currently evaluating the impact this will have on our financial statements.

Note 3 Joint Ventures

During 2016, we entered into an agreement with Saudi Aramco to form a joint venture known as SANAD to own, manage and operate onshore drilling rigs in the Kingdom of Saudi Arabia. SANAD is equally owned by Saudi Aramco and Nabors.

During 2017, Nabors and Saudi Aramco each contributed $20 million in cash for the purpose of capitalizing the joint venture upon formation. In addition, since inception Nabors and Saudi Aramco have each contributed a combination of drilling rigs, drilling rig equipment and other assets, including cash, each with a value of approximately $394 million to the joint venture. The contributions were received in exchange for redeemable ownership interests which accrue interest annually, have a twenty-five year maturity and are required to be converted to authorized capital should certain events occur, including the accumulation of specified losses. In the accompanying condensed consolidated balance sheet, Nabors has reported Saudi Aramco’s share of authorized capital as a component of noncontrolling interest

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in equity and Saudi Aramco’s share of the redeemable ownership interests as redeemable noncontrolling interest in subsidiary, classified as mezzanine equity. The accrued interest on the redeemable ownership interest is a non-cash financing activity and is reported as an increase in the redeemable noncontrolling interest in subsidiary line in our condensed consolidated balance sheet.

The condensed balance sheet of SANAD, as included in our consolidated balance sheet, is presented below.

|  | March 31, |  | December 31, |
|  | 2019 |  | 2018 |
|  | (In thousands) |
Assets: |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 242,476 |  | $ | 211,618 |
Accounts receivable |  |  | 66,311 |  |  | 73,699 |
Other current assets |  |  | 15,548 |  |  | 17,198 |
Property, plant and equipment, net |  |  | 445,092 |  |  | 457,963 |
Other long-term assets |  |  | 17,728 |  |  | 36,583 |
Total assets |  | $ | 787,155 |  | $ | 797,061 |
Liabilities: |  |  |  |  |  |  |
Accounts payable |  | $ | 61,787 |  | $ | 60,087 |
Accrued liabilities |  |  | 13,254 |  |  | 8,530 |
Total liabilities |  | $ | 75,041 |  | $ | 68,617 |

The assets of SANAD cannot be used by Nabors for general corporate purposes. Additionally, creditors of SANAD do not have recourse to other assets of Nabors.

Note 4 Fair Value Measurements

Fair value is the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date (exit price). We utilize market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs can be readily observable, market‑corroborated, or generally unobservable. We primarily apply the market approach for recurring fair value measurements and endeavor to utilize the best information available. Accordingly, we employ valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. The use of unobservable inputs is intended to allow for fair value determinations in situations where there is little, if any, market activity for the asset or liability at the measurement date. We are able to classify fair value balances utilizing a fair value hierarchy based on the observability of those inputs. Under the fair value hierarchy:

| · |  | Level 1 measurements include unadjusted quoted market prices for identical assets or liabilities in an active market;

| · |  | Level 2 measurements include quoted market prices for identical assets or liabilities in an active market that have been adjusted for items such as effects of restrictions for transferability and those that are not quoted but are observable through corroboration with observable market data, including quoted market prices for similar assets; and

| · |  | Level 3 measurements include those that are unobservable and of a subjective nature.

The following table sets forth, by level within the fair value hierarchy, our financial assets and liabilities that are accounted for at fair value on a recurring basis as of March 31, 2019 and December 31, 2018. Our debt securities could transfer into or out of a Level 1 or 2 measure depending on the availability of independent and current pricing at the end of each quarter. There were no transfers of our financial assets between Level 1 and Level 2 measures during the three months ended March 31, 2019. Our financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.

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|  | Fair Value as of March 31, 2019 |
|  | Level 1 |  | Level 2 |  | Level 3 |
|  | (In thousands) |
Assets: |  |  |  |  |  |  |  |  |  |
Short-term investments: |  |  |  |  |  |  |  |  |  |
Equity securities |  | $ | 39,556 |  | $ | 1,026 |  | $ | — |
Mortgage-CMO debt securities |  |  | — |  |  | 8 |  |  | — |
Total short-term investments |  | $ | 39,556 |  | $ | 1,034 |  | $ | — |

|  | Fair Value as of December 31, 2018 |
|  | Level 1 |  | Level 2 |  | Level 3 |
|  | (In thousands) |
Assets: |  |  |  |  |  |  |  |  |  |
Short-term investments: |  |  |  |  |  |  |  |  |  |
Equity securities |  | $ | 33,250 |  | $ | 778 |  | $ | — |
Mortgage-CMO debt securities |  |  | — |  |  | 8 |  |  | — |
Total short-term investments |  | $ | 33,250 |  | $ | 786 |  | $ | — |

Nonrecurring Fair Value Measurements

We applied fair value measurements to our nonfinancial assets and liabilities measured on a nonrecurring basis, which consist of measurements primarily to assets held for sale, goodwill, intangible assets and other long-lived assets, assets acquired and liabilities assumed in a business combination and our pipeline contractual commitment. Based upon our review of the fair value hierarchy, the inputs used in these fair value measurements were considered Level 3 inputs.

Fair Value of Financial Instruments

We estimate the fair value of our financial instruments in accordance with U.S. GAAP. The fair value of our long-term debt, revolving credit facility and commercial paper is estimated based on quoted market prices or prices quoted from third-party financial institutions. The fair value of our debt instruments is determined using Level 2 measurements. The carrying and fair values of these liabilities were as follows:

|  | March 31, 2019 |  | December 31, 2018
|  | Carrying |  | Fair |  | Carrying |  | Fair
|  | Value |  | Value |  | Value |  | Value
|  | (In thousands)
5.00% senior notes due September 2020 |  | $ | 614,825 |  | $ | 621,982 |  | $ | 614,748 |  | $ | 590,336
4.625% senior notes due September 2021 |  |  | 637,408 |  |  | 629,765 |  |  | 668,347 |  |  | 603,457
5.50% senior notes due January 2023 |  |  | 577,042 |  |  | 554,024 |  |  | 586,000 |  |  | 465,999
5.10% senior notes due September 2023 |  |  | 336,714 |  |  | 308,693 |  |  | 342,923 |  |  | 262,494
0.75% senior exchangeable notes due January 2024 |  |  | 456,077 |  |  | 410,257 |  |  | 450,689 |  |  | 358,012
5.75% senior notes due February 2025 |  |  | 791,502 |  |  | 711,093 |  |  | 791,502 |  |  | 598,953
2012 Revolving credit facility |  |  | 300,000 |  |  | 300,000 |  |  | 170,000 |  |  | 170,000
2018 Revolving credit facility |  |  | — |  |  | — |  |  | — |  |  | —
Other |  |  | 850 |  |  | 850 |  |  | 561 |  |  | 561
|  |  | 3,714,418 |  | $ | 3,536,664 |  |  | 3,624,770 |  | $ | 3,049,812
Less: current portion |  |  | 850 |  |  |  |  |  | 561 |  |  |
Less: deferred financing costs |  |  | 35,988 |  |  |  |  |  | 38,325 |  |  |
|  | $ | 3,677,580 |  |  |  |  | $ | 3,585,884 |  |  |

The fair values of our cash equivalents, trade receivables and trade payables approximate their carrying values due to the short-term nature of these instruments.

As of March 31, 2019 and December 31, 2018, our short-term investments were carried at fair market value and included $40.6 million and $34.0 million, respectively.

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Note 5 Debt

Debt consisted of the following:

|  | March 31, |  | December 31, |
|  | 2019 |  | 2018 |
|  | (In thousands) |
5.00% senior notes due September 2020 |  | $ | 614,825 |  | $ | 614,748 |
4.625% senior notes due September 2021 |  |  | 637,408 |  |  | 668,347 |
5.50% senior notes due January 2023 |  |  | 577,042 |  |  | 586,000 |
5.10% senior notes due September 2023 |  |  | 336,714 |  |  | 342,923 |
0.75% senior exchangeable notes due January 2024 |  |  | 456,077 |  |  | 450,689 |
5.75% senior notes due February 2025 |  |  | 791,502 |  |  | 791,502 |
2012 Revolving credit facility |  |  | 300,000 |  |  | 170,000 |
2018 Revolving credit facility |  |  | — |  |  | — |
Other |  |  | 850 |  |  | 561 |
|  |  | 3,714,418 |  |  | 3,624,770 |
Less: current portion |  |  | 850 |  |  | 561 |
Less: deferred financing costs |  |  | 35,988 |  |  | 38,325 |
|  | $ | 3,677,580 |  | $ | 3,585,884 |

During the three months ended March 31, 2019, we repurchased the $46.2 million aggregate principal amount outstanding of our senior unsecured notes for approximately $44.5 million in cash, including principal, and $0.9 million in accrued and unpaid interest. In connection with the repurchase, we recognized a gain of approximately $2.7 million, which represents the discount in connection with these repurchases and is included in other, net in our condensed consolidated statement of income (loss) for the three months ended March 31, 2019.

5.75% Senior Notes Due February 2025

In January 2018, Nabors Industries, Inc. (“Nabors Delaware”), a wholly owned subsidiary of Nabors, issued $800 million in aggregate principal amount of 5.75% senior unsecured notes due February 1, 2025, which are fully and unconditionally guaranteed by Nabors. The notes subsequently were exchanged for notes registered under the Securities Act pursuant to an exchange offer that took place in August 2018. The notes pay interest semi-annually on February 1 and August 1, beginning on August 1, 2018, and will mature on February 1, 2025.

The notes rank equal in right of payment to all of Nabors Delaware’s existing and future unsubordinated indebtedness, and senior in right of payment to all of Nabors Delaware’s existing and future senior subordinated and subordinated indebtedness. Our guarantee of the notes is unsecured and an unsubordinated obligation and ranks equal in right of payments to all of our unsecured and unsubordinated indebtedness from time to time outstanding. In the event of a change of control triggering event, as defined in the indenture, the holders of the notes may require Nabors Delaware to purchase all or a portion of the notes at a purchase price equal to 101% of their principal amount, plus accrued and unpaid interest, if any. The notes are redeemable in whole or in part at any time at the option of Nabors Delaware at a redemption price, plus accrued and unpaid interest, as specified in the indenture. Nabors Delaware used a portion of the proceeds to repay the amount outstanding on the 6.15% senior notes due February 2018. The remaining proceeds not used for such purposes were allocated for general corporate purposes, including to repay amounts outstanding under the commercial paper program and to repurchase or repay other indebtedness.

0.75% Senior Exchangeable Notes Due January 2024

In January 2017, Nabors Delaware issued $575 million in aggregate principal amount of 0.75% exchangeable senior unsecured notes due 2024, which are fully and unconditionally guaranteed by Nabors. The notes bear interest at a rate of 0.75% per year payable semiannually on January 15 and July 15 of each year, beginning on July 15, 2017. The exchangeable notes are bifurcated for accounting purposes into debt and equity components of $411.2 million and $163.8 million, respectively, based on the relative fair value. Debt issuance costs of $9.6 million and equity issuance costs of $3.9 million were capitalized in connection with the issuance of these notes in long-term debt and netted against the proceeds allocated to the equity component, respectively, in our condensed consolidated balance sheet. The debt issuance costs are being amortized through January 2024.

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The exchangeable notes are exchangeable, under certain conditions, at an initial exchange rate of 39.75 common shares of Nabors per $1,000 principal amount of exchangeable notes (equivalent to an initial exchange price of approximately $25.16 per common share). Upon any exchange, Nabors Delaware will settle its exchange obligation in cash, common shares of Nabors, or a combination of cash and common shares, at our election.

In connection with the pricing of the notes, we entered into privately negotiated capped call transactions which are expected to reduce potential dilution to common shares and/or offset potential cash payments required to be made in excess of the principal amount upon any exchange of notes. Such reduction and/or offset is subject to a cap representing a price per share of $31.45, an approximately 75.0% premium over our share price of $17.97 as of the date of the transaction. The capped call meets the definition of a derivative under ASC 815, Derivatives and Hedging, as it has an underlying (the Company’s share price), a notional amount (the number of underlying shares to be purchased per option), an initial net investment less (by more than a nominal amount) than the amount that would have to be paid to own the underlying and provides for a default net share settlement (but could also be settled in cash at the election of the Company). However, the capped call meets the derivative scope exception under ASC 815 for instruments indexed to the Company’s own stock and classified in shareholders’ equity and therefore was initially recorded in equity. Until such time as the Company elects a settlement method for the exchangeable notes, the capped call transaction will continue to be accounted for as equity. At conversion, if the Company elects to partially settle the notes in cash in excess of the principal amount, or fully in cash, the capped call will be subject to mark to market through earnings as a derivative until such settlement is paid.

The net proceeds from the offering of the exchangeable notes were used to prepay the remaining balance of our unsecured term loan originally scheduled to mature in 2020, as well as to pay the cost of the capped call transactions. The remaining net proceeds from the offering were allocated for general corporate purposes, including to repurchase or repay other indebtedness.

2018 Revolving Credit Facility

On October 11, 2018, Nabors Delaware, Nabors Drilling Canada Limited, an Alberta corporation (“Nabors Canada”), Nabors and certain other of Nabors’ wholly owned subsidiaries entered into a new five-year unsecured revolving facility with the lenders and issuing banks party thereto and Citibank, N.A., as administrative agent (the “2018 Revolving Credit Facility”). The 2018 Revolving Credit Facility has a borrowing capacity of $1.267 billion and is fully and unconditionally guaranteed by Nabors and certain of its wholly owned subsidiaries. The 2018 Revolving Credit Facility matures at the earlier of (a) October 11, 2023 and (b) July 19, 2022, if any of Nabors Delaware’s existing 5.5% senior notes due January 2023 remain outstanding as of such date. Certain lenders have committed to provide Nabors Delaware an aggregate principal amount of $1.227 billion under the 2018 Revolving Credit Facility, which may be drawn in U.S. dollars, and HSBC Bank Canada has committed to provide Nabors Canada an aggregate principal amount of $40 million in U.S. dollar equivalent, which can be drawn upon in either U.S. or Canadian dollars. The 2018 Revolving Credit Facility contains certain affirmative and negative covenants, including a financial covenant requiring Nabors to maintain a net debt to capitalization ratio not in excess of 0.60:1. Our net debt to capital ratio was 0.55:1 as of March 31, 2019. The net debt to capital ratio is calculated by dividing net debt by net capitalization. Net debt is defined as total debt minus the sum of cash and cash equivalents and short-term investments. Net capitalization is defined as net debt plus shareholders’ equity. As of March 31, 2019, our net debt could be higher by approximately $630.0 million, while still maintaining our net debt to capital ratio of 0.60:1. Borrowing from the revolving credit facilities to pay down other debt, such as the 5.00% senior notes due September 2020, does not adversely impact the ratio calculation. Therefore, the entire balance under the revolving credit facilities could be drawn to pay down outstanding debt. The ratio is only materially impacted by borrowing under the revolving credit facility to use for purposes other than retiring debt, which would increase our net debt. We can limit or control our spending through reductions in discretionary capital or other types of controllable expenditures, monetization of assets, accessing capital markets through a variety of alternative methods, or any combination of these alternatives if needed. We cannot make any assurances as to our ability to implement any or all of these alternatives.

Additionally, during any period in which Nabors Delaware fails to maintain an investment grade rating from at least two ratings agencies, the guarantors under the facility and their respective subsidiaries will be required to maintain an asset to debt coverage ratio (as defined in the 2018 Revolving Credit Facility) of at least 2.50:1. As of March 31, 2019, our asset to debt coverage ratio was 3.74:1. The asset to debt coverage ratio is calculated by dividing (x) drilling-related fixed assets wholly owned by certain of Nabors’ subsidiaries that are guaranteeing the 2018 Revolving Credit Facility (the “2018 Revolver Guarantors”) or wholly owned subsidiaries of the 2018 Revolver Guarantors by (y) total debt of the

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2018 Revolver Guarantors (subject to certain exclusions). As of the date of this report, we had no borrowings outstanding under our 2018 Revolving Credit Facility. In order to make any future borrowings under the 2018 Revolving Credit Facility, Nabors and certain of its wholly owned subsidiaries are subject to compliance with the conditions and covenants contained therein, including compliance with applicable financial ratios.

2012 Revolving Credit Facility

In connection with the 2018 Revolving Credit Facility, on October 11, 2018, Nabors Delaware entered into Amendment No. 3 to its existing credit agreement dated November 29, 2012 (as amended, including such amendment, the “2012 Revolving Credit Facility”), among itself, Nabors, Nabors Canada, HSBC Bank Canada, the other lenders party thereto, Citibank, N.A., and Wilmington Trust, National Association, as successor administrative agent (the “Amendment”). The Amendment, among other things, provides for Citibank, N.A.’s resignation as administrative agent and the appointment of Wilmington Trust, National Association as administrative agent, reduces the overall commitments available to $666.25 million and provides for certain lenders to exit the facility in order to become lenders under the 2018 Revolving Credit Facility. Availability under the 2012 Revolving Credit Facility is subject to a covenant not to exceed a net debt to capital ratio of 0.60:1. As of March 31, 2019, we had $300.0 million outstanding under the 2012 Revolving Credit Facility. The weighted average interest rate on borrowings at March 31, 2019 was 4.00%. The 2012 Revolving Credit Facility matures on July 14, 2020.

As of the date of this report, we were in compliance with all covenants under the 2018 Revolving Credit Facility and 2012 Revolving Credit Facility. If we fail to perform our obligations under the covenants, the revolving credit commitment could be terminated, and any outstanding borrowings under the facility could be declared immediately due and payable.

Note 6 Shareholders’ Equity

Common shares

In May 2018, we issued 35,000,000 shares of common stock at a price to the public of $7.75 per share. In connection with this offering, in June 2018 the underwriters exercised in full their option to purchase 5,250,000 additional common shares. Nabors received aggregate net proceeds of approximately $301.4 million after deducting underwriting discounts, commissions and offering expenses.

On February 22, 2019, a cash dividend of $0.01 per share was declared for shareholders of record on March 12, 2019. The dividend was paid on April 2, 2019 in the amount of $3.5 million. These dividends were charged to retained earnings in our condensed consolidated statements of changes in equity for the three months ended March 31, 2019.

On April 24, 2019, our Board of Directors declared a cash dividend of $0.01 per common share, which will be paid on July 2, 2019 to shareholders of record at the close of business on June 11, 2019.

Convertible Preferred Shares

In May 2018, we issued 5,750,000 (including the underwriters option for 750,000) of our 6% Series A Mandatory Convertible Preferred Shares (the “mandatory convertible preferred shares”), par value $.001 per share, with a liquidation preference of $50 per share. Nabors received aggregate net proceeds of approximately $277.9 million after deducting underwriting discounts, commissions and offering expenses.

The dividends on the mandatory convertible preferred shares are payable on a cumulative basis at a rate of 6% annually on the initial liquidation preference of $50 per share. Dividends accumulate and are paid quarterly to the extent that we have available funds and our Board of Directors declares a dividend payable. We may elect to pay any accumulated and unpaid dividends in cash or common shares or any combination thereof. At issuance, each mandatory convertible preferred share was automatically convertible into between 5.3763 and 6.4516 of our common shares based on the average share price over a period of twenty consecutive trading days ending prior to May 1, 2021, subject to anti-dilution adjustments. As a result of the dividends paid on our common shares since the offering, the conversion rate for each mandatory convertible preferred share has been adjusted to between 5.5946 and 6.7136 of our common shares. At any time prior to May 1, 2021, a holder of mandatory convertible preferred shares may convert such mandatory convertible preferred shares into our common shares at the minimum conversion rate, subject to adjustment.

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On February 22, 2019, a cash dividend of $0.75 per mandatory convertible preferred share was declared for shareholders of record on April 15, 2019. The dividend was paid on May 1, 2019 in the amount of $4.3 million. These dividends were charged to retained earnings in our condensed consolidated statements of changes in equity for the three months ended March 31, 2019.

On April 24, 2019, our Board of Directors declared a cash dividend of $0.75 per mandatory convertible preferred share, which will be paid on August 1, 2019 to shareholders of record at the close of business on July 15, 2019.

Note 7 Commitments and Contingencies

Contingencies

Income Tax

We operate in a number of countries and our tax returns filed in those jurisdictions are subject to review and examination by tax authorities within those jurisdictions. We do not recognize the benefit of income tax positions we believe are more likely than not to be disallowed upon challenge by a tax authority. If any tax authority successfully challenges our operational structure, intercompany pricing policies or the taxable presence of our subsidiaries in certain countries, if the terms of certain income tax treaties are interpreted in a manner that is adverse to our structure, or if we lose a material tax dispute in any country, our effective tax rate on our worldwide earnings could change substantially.

In certain jurisdictions we have recognized deferred tax assets and liabilities. Judgment and assumptions are required in determining whether deferred tax assets will be fully or partially utilized. When we estimate that all or some portion of certain deferred tax assets such as net operating loss carryforwards will not be utilized, we establish a valuation allowance for the amount we determine to be more likely than not unrealizable. We continually evaluate strategies that could allow for future utilization of our deferred assets. Any change in the ability to utilize such deferred assets will be accounted for in the period of the event affecting the valuation allowance. If facts and circumstances cause us to change our expectations regarding future tax consequences, the resulting adjustments could have a material effect on our financial results or cash flow. At this time, we consider it more likely than not that we will have sufficient taxable income in the future that will allow us to realize the deferred tax assets that we have recognized. However, it is possible that some of our recognized deferred tax assets, relating to net operating loss carryforwards, could expire unused or could carryforward indefinitely without utilization. Therefore, unless we are able to generate sufficient taxable income from our component operations, a substantial valuation allowance to reduce our deferred tax assets may be required, which would materially increase our tax expense in the period the allowance is recognized and materially adversely affect our results of operations and statement of financial condition.

Litigation

Nabors and its subsidiaries are defendants or otherwise involved in a number of lawsuits in the ordinary course of business. We estimate the range of our liability related to pending litigation when we believe the amount and range of loss can be estimated. We record our best estimate of a loss when the loss is considered probable. When a liability is probable and there is a range of estimated loss with no best estimate in the range, we record the minimum estimated liability related to the lawsuits or claims. As additional information becomes available, we assess the potential liability related to our pending litigation and claims and revise our estimates. Due to uncertainties related to the resolution of lawsuits and claims, the ultimate outcome may differ from our estimates. For matters where an unfavorable outcome is reasonably possible and significant, we disclose the nature of the matter and a range of potential exposure, unless an estimate cannot be made at the time of disclosure. In the opinion of management and based on liability accruals provided, our ultimate exposure with respect to these pending lawsuits and claims is not expected to have a material adverse effect on our consolidated financial position or cash flows, although they could have a material adverse effect on our results of operations for a particular reporting period.

In March 2011, the Court of Ouargla entered a judgment of approximately $23.6 million (at March 31, 2019 exchange rates) against us relating to alleged violations of Algeria’s foreign currency exchange controls, which require that goods and services provided locally be invoiced and paid in local currency. The case relates to certain foreign currency payments made to us by CEPSA, a Spanish operator, for wells drilled in 2006. Approximately $7.5 million of the total contract amount was paid offshore in foreign currency, and approximately $3.2 million was paid in local

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currency. The judgment includes fines and penalties of approximately four times the amount at issue. We have appealed the ruling based on our understanding that the law in question applies only to resident entities incorporated under Algerian law. An intermediate court of appeals upheld the lower court’s ruling, and we appealed the matter to the Supreme Court. On September 25, 2014, the Supreme Court overturned the verdict against us, and the case was reheard by the Ouargla Court of Appeals on March 22, 2015 in light of the Supreme Court’s opinion. On March 29, 2015, the Ouargla Court of Appeals reinstated the initial judgment against us. We have appealed this decision again to the Supreme Court. While our payments were consistent with our historical operations in the country, and, we believe, those of other multinational corporations there, as well as interpretations of the law by the Central Bank of Algeria, the ultimate resolution of this matter could result in a loss of up to $15.6 million in excess of amounts accrued.

On September 29, 2017, Nabors and Nabors Maple Acquisition Ltd. were sued, along with Tesco Corporation and its Board of Directors, in a putative shareholder class action filed in the United States District Court for the Southern District of Texas, Houston Division. The plaintiff alleges that the September 18, 2017 Preliminary Proxy Statement filed by Tesco with the United States Securities and Exchange Commission omitted material information with respect to the proposed transaction between Tesco and Nabors announced on August 14, 2017. The plaintiff claims that the omissions rendered the Proxy Statement false and misleading, constituting a violation of Sections 14(a) and 20(a) of the Securities Exchange Act of 1934. The court consolidated several matters and entered a lead plaintiff appointment order. The plaintiff filed their amended complaint, adding Nabors Industries, Ltd. as a party to the consolidated action. Nabors filed its motion to dismiss, which was granted by the court on March 29, 2019. Plaintiffs have thirty (30) days to seek a new trial or file an appeal. Nabors will continue to vehemently defend itself against the allegations.

Following a routine audit conducted in May and June of 2018 by the Atyrau Oblast Ecology Department (the “AOED”), our joint venture in Kazakhstan, KMG Nabors Drilling Company (“KNDC”), was administratively fined for not having emissions permits for KNDC owned or leased equipment. Prior to this audit, the AOED had always accepted the operator’s permits for all of their subcontractors. However, because of major personnel changes, AOED changed this position and is now requiring that the owner/lessor of the equipment that emits the pollutants must have its own permits. Administrative fines have been issued to KNDC and paid in the amount of $0.8 million for violations regarding the failure to have proper permits, and consequently additional “environmental damages” that have been created during the period while KNDC did not hold its’ own permit for the emissions are pending that could exceed $3.4 million. Additional damages in the form of later year audits and taxes could become due as well exposing KNDC to possible additional penalties and fines in an amount estimated to be up to approximately $4.0 million. KNDC believes and is taking the stance, that the operator of the wells has a contractual obligation to reimburse KNDC for any and all such fines. The operator initially agreed with this approach, but then reversed its position in late 2018. In addition, KNDC has challenged the AOED’s decision both administratively and through the courts. The administrative appeal remains pending. The original administrative decision has been affirmed in the lower courts, and on February 6, 2019, the decision was appealed to the Supreme Court. The initial hearing in the Supreme Court took place and the decision is pending. Nabors intends to vigorously defend itself and pursue all remedies at its disposal.

Off-Balance Sheet Arrangements (Including Guarantees)

We are a party to some transactions, agreements or other contractual arrangements defined as “off-balance sheet arrangements” that could have a material future effect on our financial position, results of operations, liquidity and capital resources. The most significant of these off-balance sheet arrangements involve agreements and obligations under which we provide financial or performance assurance to third parties. Certain of these agreements serve as guarantees, including standby letters of credit issued on behalf of insurance carriers in conjunction with our workers’ compensation insurance program and other financial surety instruments such as bonds. In addition, we have provided indemnifications, which serve as guarantees, to some third parties. These guarantees include indemnification provided by Nabors to our share transfer agent and our insurance carriers. We are not able to estimate the potential future maximum payments that might be due under our indemnification guarantees.

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Management believes the likelihood that we would be required to perform or otherwise incur any material losses associated with any of these guarantees is remote. The following table summarizes the total maximum amount of financial guarantees issued by Nabors:

|  | Maximum Amount |
|  | 2019 |  | 2020 |  | 2021 |  | Thereafter |  | Total |
|  | (In thousands) |
Financial standby letters of credit and other financial surety instruments |  | $ | 213,018 |  | 1,168 |  | — |  | — |  | $ | 214,186 |

Note 8 Earnings (Losses) Per Share

ASC 260, Earnings per Share, requires companies to treat unvested share-based payment awards that have nonforfeitable rights to dividends or dividend equivalents as a separate class of securities in calculating earnings (losses) per share. We have granted and expect to continue to grant to employees restricted stock grants that contain nonforfeitable rights to dividends. Such grants are considered participating securities under ASC 260. As such, we are required to include these grants in the calculation of our basic earnings (losses) per share and calculate basic earnings (losses) per share using the two-class method. The two-class method of computing earnings per share is an earnings allocation formula that determines earnings per share for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. The participating security holders are not contractually obligated to share in losses. Therefore, losses are not allocated to the participating security holders.

Basic earnings (losses) per share is computed utilizing the two-class method and is calculated based on the weighted-average number of common shares outstanding during the periods presented.

Diluted earnings (losses) per share is computed using the weighted-average number of common and common equivalent shares outstanding during the periods utilizing the two-class method for stock options and unvested restricted stock. Shares issuable upon exchange of the $575 million 0.75% exchangeable notes are not included in the calculation of diluted earnings (losses) per share unless the exchange value of the notes exceeds their principal amount at the end of the relevant reporting period, in which case the notes will be accounted for as if the number of common shares that would be necessary to settle the excess are issued. Such shares are only included in the calculation of the weighted-average number of shares outstanding in our diluted earnings (losses) per share calculation, when the price of our shares exceeds $25.16 on the last trading day of the quarter, which did not occur during the three months ended March 31, 2019.

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A reconciliation of the numerators and denominators of the basic and diluted earnings (losses) per share computations is as follows:

|  |  | Three Months Ended |
|  |  | March 31, |
|  |  | 2019 |  | 2018 |
| (In thousands, except per share amounts)
BASIC EPS: |  |  |  |  |  |  |  |
Net income (loss) (numerator): |  |  |  |  |  |  |  |
Income (loss) from continuing operations, net of tax |  |  | $ | (103,376) |  | $ | (143,587) |
Less: net (income) loss attributable to noncontrolling interest |  |  |  | (14,176) |  |  | (539) |
Less: preferred stock dividends |  |  |  | (4,313) |  |  | — |
Less: accrued distribution on redeemable noncontrolling interest in subsidiary |  |  |  | (5,063) |  |  | (2,399) |
Less: distributed and undistributed earnings allocated to unvested shareholders |  |  |  | (118) |  |  | 3,360 |
Numerator for basic earnings per share: |  |  |  |  |  |  |  |
Adjusted income (loss) from continuing operations, net of tax - basic |  |  | $ | (127,046) |  | $ | (143,165) |
Income (loss) from discontinued operations, net of tax |  |  | $ | (157) |  | $ | (75) |
Weighted-average number of shares outstanding - basic |  |  |  | 350,764 |  |  | 308,788 |
Earnings (losses) per share: |  |  |  |  |  |  |  |
Basic from continuing operations |  |  | $ | (0.36) |  | $ | (0.46) |
Basic from discontinued operations |  |  |  | — |  |  | — |
Total Basic |  |  | $ | (0.36) |  | $ | (0.46) |
DILUTED EPS: |  |  |  |  |  |  |  |
Adjusted income (loss) from continuing operations, net of tax - basic |  |  | $ | (127,046) |  | $ | (143,165) |
Add: effect of reallocating undistributed earnings of unvested shareholders |  |  |  | — |  |  | — |
Adjusted income (loss) from continuing operations, net of tax - diluted |  |  | $ | (127,046) |  | $ | (143,165) |
Income (loss) from discontinued operations, net of tax |  |  | $ | (157) |  | $ | (75) |
Weighted-average number of shares outstanding - basic |  |  |  | 350,764 |  |  | 308,788 |
Add: dilutive effect of potential common shares |  |  |  | — |  |  | — |
Weighted-average number of shares outstanding - diluted |  |  |  | 350,764 |  |  | 308,788 |
Earnings (losses) per share: |  |  |  |  |  |  |  |
Diluted from continuing operations |  |  | $ | (0.36) |  | $ | (0.46) |
Diluted from discontinued operations |  |  |  | — |  |  | — |
Total Diluted |  |  | $ | (0.36) |  | $ | (0.46) |

For all periods presented, the computation of diluted earnings (losses) per share excludes outstanding stock options with exercise prices greater than the average market price of Nabors’ common shares, because their inclusion would be anti-dilutive and because they are not considered participating securities. For periods in which we experience a net loss from continuing operations, all potential common shares have been excluded from the calculation of weighted-average shares outstanding, because their inclusion would be anti-dilutive. The average number of options that were excluded from diluted earnings (losses) per share that would potentially dilute earnings per share in the future were as follows:

|  |  | Three Months Ended |
|  |  | March 31, |
|  |  | 2019 |  | 2018 |
| (In thousands)
Potentially dilutive securities excluded as anti-dilutive |  |  |  | 2,563 |  |  | 4,534 |

In any period during which the average market price of Nabors’ common shares exceeds the exercise prices of these stock options, such stock options will be included in our diluted earnings (losses) per share computation using the if-converted method of accounting. Restricted stock is included in our basic and diluted earnings (losses) per share computation using the two-class method of accounting in all periods because such stock is considered participating securities.

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Additionally, we excluded 38.6 million common shares from the computation of diluted shares issuable upon the conversion of mandatory convertible preferred shares, because their effect would be anti-dilutive under the if-converted method.

Note 9 Supplemental Balance Sheet and Income Statement Information

Accrued liabilities included the following:

|  | March 31, |  | December 31, |
|  | 2019 |  | 2018 |
|  | (In thousands) |
Accrued compensation |  | $ | 74,104 |  | $ | 92,358 |
Deferred revenue and proceeds on insurance and asset sales |  |  | 125,777 |  |  | 149,266 |
Other taxes payable |  |  | 15,460 |  |  | 33,199 |
Workers’ compensation liabilities |  |  | 15,214 |  |  | 16,316 |
Interest payable |  |  | 18,982 |  |  | 59,718 |
Litigation reserves |  |  | 20,494 |  |  | 24,926 |
Current liability to discontinued operations |  |  | 999 |  |  | 2,445 |
Dividends declared and payable |  |  | 3,514 |  |  | 25,330 |
Other accrued liabilities |  |  | 23,515 |  |  | 14,354 |
|  | $ | 298,059 |  | $ | 417,912 |

Investment income (loss) includes the following:

|  | Three Months Ended |
|  | March 31, |
|  | 2019 |  | 2018 |
|  | (In thousands) |
Interest and dividend income |  | $ | 2,033 |  | $ | 1,191 |
Gains (losses) on marketable securities |  |  | 7,644 |  |  | (726) |
|  | $ | 9,677 |  | $ | 465 |

Other, net included the following:

|  |  | Three Months Ended |
|  |  | March 31, |
|  |  | 2019 |  | 2018 |
| (In thousands)
Losses (gains) on sales, disposals and involuntary conversions of long-lived assets |  |  | $ | 3,633 |  | $ | 2,240 |
Transaction related costs (1) |  |  |  | — |  |  | 7,044 |
Litigation expenses and reserves |  |  |  | 7,132 |  |  | 3,600 |
Foreign currency transaction losses (gains) |  |  |  | 8,573 |  |  | 2,503 |
(Gain) loss on debt buyback |  |  |  | (2,667) |  |  | — |
Other losses (gains) |  |  |  | 831 |  |  | (1,298) |
|  |  | $ | 17,502 |  | $ | 14,089 |

| (1) |  | Represents transaction related costs, including professional fees, severances, facility closure costs and other cost rationalization items, primarily in connection with the acquisition of Tesco.

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The changes in accumulated other comprehensive income (loss), by component, included the following:

|  |  |  |  | Unrealized |  |  |  |  |  |  |  |  |  |
|  | Gains |  | gains (losses) |  | Defined |  |  |  |  |  |  |
|  | (losses) on |  | on available- |  | benefit |  | Foreign |  |  |  |
|  | cash flow |  | for-sale |  | pension plan |  | currency |  |  |  |
|  | hedges |  | securities |  | items |  | items |  | Total |
|  | (In thousands (1) ) |
As of January 1, 2018 |  | $ | (922) |  | $ | 9,144 |  | $ | (4,111) |  | $ | 7,074 |  | $ | 11,185 |
Other comprehensive income (loss) before reclassifications |  |  | — |  |  | — |  |  | — |  |  | (9,343) |  |  | (9,343) |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | 109 |  |  | — |  |  | 42 |  |  | — |  |  | 151 |
Adoption of ASU No. 2016-01 |  |  | — |  |  | (9,144) |  |  | — |  |  | — |  |  | (9,144) |
Net other comprehensive income (loss) |  |  | 109 |  |  | (9,144) |  |  | 42 |  |  | (9,343) |  |  | (18,336) |
As of March 31, 2018 |  | $ | (813) |  | $ | — |  | $ | (4,069) |  | $ | (2,269) |  | $ | (7,151) |

| (1) |  | All amounts are net of tax.

|  |  |  |  | Unrealized |  |  |  |  |  |  |  |  |  |
|  | Gains |  | gains (losses) |  | Defined |  |  |  |  |  |  |
|  | (losses) on |  | on available- |  | benefit |  | Foreign |  |  |  |
|  | cash flow |  | for-sale |  | pension plan |  | currency |  |  |  |
|  | hedges |  | securities |  | items |  | items |  | Total |
|  | (In thousands (1) ) |
As of January 1, 2019 |  | $ | (492) |  | $ | — |  | $ | (3,945) |  | $ | (24,888) |  | $ | (29,325) |
Other comprehensive income (loss) before reclassifications |  |  | — |  |  | — |  |  | — |  |  | 9,190 |  |  | 9,190 |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | 106 |  |  | — |  |  | 42 |  |  | — |  |  | 148 |
Net other comprehensive income (loss) |  |  | 106 |  |  | — |  |  | 42 |  |  | 9,190 |  |  | 9,338 |
As of March 31, 2019 |  | $ | (386) |  | $ | — |  | $ | (3,903) |  | $ | (15,698) |  | $ | (19,987) |

| (1) |  | All amounts are net of tax.

The line items that were reclassified to net income included the following:

|  |  | Three Months Ended |
|  |  | March 31, |
|  |  | 2019 |  | 2018 |
| (In thousands)
Interest expense |  |  | $ | 140 |  | $ | 140 |
General and administrative expenses |  |  |  | 54 |  |  | 54 |
Total income (loss) from continuing operations before income tax |  |  |  | (194) |  |  | (194) |
Tax expense (benefit) |  |  |  | (46) |  |  | (43) |
Reclassification adjustment for (gains)/ losses included in net income (loss) |  |  | $ | (148) |  | $ | (151) |

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Note 10 Segment Information

The following table sets forth financial information with respect to our reportable operating segments:

|  |  | Three Months Ended |
|  |  | March 31, |
|  |  | 2019 |  | 2018 |
| (In thousands)
Operating revenues: |  |  |  |  |  |  |  |
U.S. Drilling |  |  | $ | 320,209 |  | $ | 241,002 |
Canada Drilling |  |  |  | 25,315 |  |  | 31,887 |
International Drilling |  |  |  | 337,256 |  |  | 368,845 |
Drilling Solutions |  |  |  | 65,422 |  |  | 62,648 |
Rig Technologies |  |  |  | 71,753 |  |  | 64,669 |
Other reconciling items (1) |  |  |  | (20,315) |  |  | (34,857) |
Total |  |  | $ | 799,640 |  | $ | 734,194 |

|  |  | Three Months Ended |
|  |  | March 31, |
|  |  | 2019 |  | 2018 |
| (In thousands)
Adjusted operating income (loss): (2) |  |  |  |  |  |  |  |
U.S. Drilling |  |  | $ | 24,683 |  | $ | (19,746) |
Canada Drilling |  |  |  | (59) |  |  | (592) |
International Drilling |  |  |  | (5,637) |  |  | 24,536 |
Drilling Solutions |  |  |  | 12,855 |  |  | 8,721 |
Rig Technologies |  |  |  | (5,148) |  |  | (12,976) |
Total segment adjusted operating income (loss) |  |  | $ | 26,694 |  | $ | (57) |

|  |  | Three Months Ended |
|  |  | March 31, |
|  |  | 2019 |  | 2018 |
| (In thousands)
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |  |  |
Total segment adjusted operating income (loss) (2) |  |  | $ | 26,694 |  | $ | (57) |
Other reconciling items (3) |  |  |  | (40,089) |  |  | (44,977) |
Earnings (losses) from unconsolidated affiliates |  |  |  | (5) |  |  | 2 |
Investment income (loss) |  |  |  | 9,677 |  |  | 465 |
Interest expense |  |  |  | (52,352) |  |  | (61,386) |
Other, net |  |  |  | (17,502) |  |  | (14,089) |
Income (loss) from continuing operations before income taxes |  |  | $ | (73,577) |  | $ | (120,042) |

|  | March 31, |  | December 31, |
|  | 2019 |  | 2018 |
|  | (In thousands) |
Total assets: |  |  |  |  |  |  |
U.S. Drilling |  | $ | 2,954,828 |  | $ | 2,982,974 |
Canada Drilling |  |  | 250,417 |  |  | 252,817 |
International Drilling |  |  | 3,243,297 |  |  | 3,320,347 |
Drilling Solutions |  |  | 269,329 |  |  | 281,078 |
Rig Technologies |  |  | 426,517 |  |  | 401,044 |
Other reconciling items (3) |  |  | 629,296 |  |  | 615,684 |
Total |  | $ | 7,773,684 |  | $ | 7,853,944 |

| (1) |  | Represents the elimination of inter-segment transactions.

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| (2) |  | Adjusted operating income (loss) represents income (loss) from continuing operations before income taxes, interest expense, earnings (losses) from unconsolidated affiliates, investment income (loss) and other, net. Management evaluates the performance of our operating segments using adjusted operating income (loss), which is a segment performance measure, because it believes that this financial measure reflects our ongoing profitability and performance. In addition, securities analysts and investors use this measure as one of the metrics on which they analyze our performance. A reconciliation to income (loss) from continuing operations before income taxes is provided in the above table.

| (3) |  | Represents the elimination of inter-segment transactions and unallocated corporate expenses and assets.

Note 11 Revenue Recognition

We recognize revenue when control of a good or service promised in a contract (i.e., performance obligation) is transferred to a customer. Control is obtained when a customer has the ability to direct the use of and obtain substantially all of the remaining benefits from that good or service. Contract drilling revenues are recorded over time utilizing the input method based on time elapsed. The measurement of progress considers the transfer of the service to the customer as we provide daily drilling services. We receive payment after the services have been performed by billing customers periodically (typically monthly). However, a portion of our revenues are recognized at a point-in-time as control is transferred at a distinct point in time such as with the sale of our top drives and other capital equipment. Within our drilling contracts, we have identified one performance obligation in which the transaction price is allocated.

Disaggregation of revenue

In the following table, revenue is disaggregated by geographical region. The table also includes a reconciliation of the disaggregated revenue with the reportable segments:

|  | Three Months Ended |
|  | March 31, 2019 |
|  |  | U.S. Drilling |  |  | Canada Drilling |  |  | International Drilling |  |  | Drilling Solutions |  |  | Rig Technologies |  |  | Other |  |  | Total |
|  | (In thousands) |
Lower 48 |  | $ | 258,871 |  | $ | — |  | $ | — |  | $ | 44,052 |  | $ | 54,735 |  | $ | — |  | $ | 357,658 |
U.S. Offshore Gulf of Mexico |  |  | 41,481 |  |  | — |  |  | — |  |  | 4,244 |  |  | — |  |  | — |  |  | 45,725 |
Alaska |  |  | 19,857 |  |  | — |  |  | — |  |  | 1,728 |  |  | 303 |  |  | — |  |  | 21,888 |
Canada |  |  | — |  |  | 25,315 |  |  | — |  |  | 673 |  |  | 2,628 |  |  | — |  |  | 28,616 |
Middle East & Asia |  |  | — |  |  | — |  |  | 187,969 |  |  | 10,505 |  |  | 10,601 |  |  | — |  |  | 209,075 |
Latin America |  |  | — |  |  | — |  |  | 92,366 |  |  | 3,231 |  |  | 920 |  |  | — |  |  | 96,517 |
Europe, Africa & CIS |  |  | — |  |  | — |  |  | 56,921 |  |  | 989 |  |  | 2,566 |  |  | — |  |  | 60,476 |
Eliminations & other |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (20,315) |  |  | (20,315) |
Total |  | $ | 320,209 |  | $ | 25,315 |  | $ | 337,256 |  | $ | 65,422 |  | $ | 71,753 |  | $ | (20,315) |  | $ | 799,640 |

|  | Three Months Ended
|  | March 31, 2018
|  |  | U.S. Drilling |  |  | Canada Drilling |  |  | International Drilling |  |  | Drilling Solutions |  |  | Rig Technologies |  |  | Other |  |  | Total
|  | (In thousands)
Lower 48 |  | $ | 204,592 |  | $ | — |  | $ | — |  | $ | 44,273 |  | $ | 50,597 |  | $ | — |  | $ | 299,462
U.S. Offshore Gulf of Mexico |  |  | 20,991 |  |  | — |  |  | — |  |  | 3,299 |  |  | — |  |  | — |  |  | 24,290
Alaska |  |  | 15,419 |  |  | — |  |  | — |  |  | 566 |  |  | 136 |  |  | — |  |  | 16,121
Canada |  |  | — |  |  | 31,887 |  |  | — |  |  | 2,290 |  |  | 3,391 |  |  | — |  |  | 37,568
Middle East & Asia |  |  | — |  |  | — |  |  | 233,857 |  |  | 7,725 |  |  | 5,208 |  |  | — |  |  | 246,790
Latin America |  |  | — |  |  | — |  |  | 83,883 |  |  | 3,984 |  |  | 1,658 |  |  | — |  |  | 89,525
Europe, Africa & CIS |  |  | — |  |  | — |  |  | 51,105 |  |  | 511 |  |  | 3,679 |  |  | — |  |  | 55,295
Eliminations & other |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (34,857) |  |  | (34,857)
Total |  | $ | 241,002 |  | $ | 31,887 |  | $ | 368,845 |  | $ | 62,648 |  | $ | 64,669 |  | $ | (34,857) |  | $ | 734,194

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Contract balances

We perform our obligations under a contract with a customer by transferring goods or services in exchange for consideration from the customer. We recognize a contract asset or liability when we transfer goods or services to a customer and bill an amount which differs from the revenue allocated to the related performance obligations.

The timing of revenue recognition may differ from the timing of invoicing to customers and these timing differences result in receivables, contract assets, or contract liabilities (deferred revenue) on our condensed consolidated balance sheet. In general, we receive payments from customers based on dayrates as stipulated in our contracts (i.e. operating rate, standby rate). The invoices billed to the customer are based on the varying rates applicable to the operating status on each rig. Accounts receivable are recorded when the right to consideration becomes unconditional.

Dayrate contracts also may contain fees charged to the customer for up-front rig modifications, mobilization and demobilization of equipment and personnel. These fees are associated with contract fulfillment activities, and the related revenue (subject to any constraint on estimates of variable consideration) is allocated to a single performance obligation and recognized ratably over the initial term of the contract. Mobilization fees are generally billable to the customer in the initial phase of a contract and generate contract liabilities until they are recognized as revenue. Demobilization fees are generally received at the end of the contract and generate contract assets when they are recognized as revenue prior to becoming receivables from the customer.

We receive reimbursements from our customers for the purchase of supplies, equipment, personnel services and other services provided at their request. Reimbursable revenues are variable and subject to uncertainty as the amounts received and timing thereof are dependent on factors outside of our influence. Accordingly, these revenues are constrained and not recognized until the uncertainty is resolved, which typically occurs when the related costs are incurred on behalf of the customer. We are generally considered a principal in these transactions and record the associated revenues at the gross amounts billed to the customer.

The opening and closing balances of our receivables, contract assets and current and long-term contract liabilities are as follows:

|  |  |  | Contract |  | Contract |  | Contract |  | Contract
|  | Contract |  | Assets |  | Assets |  | Liabilities |  | Liabilities
|  | Receivables |  | (Current) |  | (Long-term) |  | (Current) |  | (Long-term)
|  | (In millions)
As of December 31, 2018 |  | $ | 791.2 |  | $ | 55.8 |  | $ | 32.3 |  | $ | 116.7 |  | $ | 69.7
As of March 31, 2019 |  | $ | 776.5 |  | $ | 48.0 |  | $ | 27.7 |  | $ | 95.1 |  | $ | 66.7

Approximately 53% of the contract liability balance at the beginning of the period is expected to be recognized as revenue during 2019, of which 21% was recognized during the three months ended March 31, 2019, and 29% is expected to be recognized during 2020. The remaining 18% of the contract liability balance at the beginning of the period is expected to be recognized as revenue during 2021 or thereafter.

Additionally, 46% of the contract asset balance at the beginning of the period is expected to be recognized as expense during 2019, of which 21% was recognized during the three months ended March 31, 2019, and 32% is expected to be recognized during 2020. The remaining 22% of the contract asset balance at the beginning of the period is expected to be recognized as expense during 2021 or thereafter. This disclosure does not include variable consideration allocated entirely to a wholly unsatisfied performance obligation or promise to transfer a distinct good or service that forms part of a single performance obligation.

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Note 12 Leases

Prior to January 1, 2019, we accounted for leases under ASC 840 and did not record any right of use asset or corresponding lease liability. We adopted ASC 842 using a modified retrospective with an effective date of January 1, 2019. As such, financial information for prior periods has not been adjusted and continues to be reported under ASC 840. Effective with the adoption of ASC 842, we have changed our accounting policy for leases as detailed below.

We have evaluated the provisions of ASC 842, including certain practical expedients allowed. The significant practical expedients we adopted include the following:

| · |  | We elected the practical expedient to apply the transition approach as of the beginning of the period of adoption and not restate comparative periods;

| · |  | We elected to utilize the “package of three” expedients, as defined in ASC 842, whereby we did not reassess whether contracts existing prior to the effective date contain leases, nor did we reassess lease classification determinations nor whether initial direct costs qualify for capitalization;

| · |  | We elected the practical expedient to not capitalize any leases with initial terms of twelve months or less on our condensed consolidated balance sheet;

| · |  | For all underlying classes of leased assets, we elected the practical expedient to not separate lease and non-lease components; and

| · |  | We elected the practical expedient to continue to account for land easements (also known as “rights of way”) that were not previously accounted for as leases consistent with prior accounting until such contracts are modified or replaced, at which time they would be assessed for lease classification under ASC 842.

As of the date of implementation on January 1, 2019, the impact of the adoption of ASC 842 resulted in the recognition of a right of use asset and lease payable obligation on our condensed consolidated balance sheet of approximately $33.1 million. As the right of use asset and the lease payable obligation were the same, there was no cumulative effect impact on retained earnings.

We determine whether a contract is or contains a lease at inception of the contract based on answers to a series of questions that address whether an identified asset exists and whether we have the right to obtain substantially all of the benefit of the assets and to control its use over the full term of the agreement. When available, we use the rate implicit in the lease to discount lease payments to present value; however, most of our leases do not provide a readily determinable implicit rate. Therefore, we must estimate our incremental borrowing rate using a credit notching approach to discount the lease payments based on information available at lease commencement. We do not separate lease and nonlease components of contracts. There are no material residual value guarantees nor any restrictions or covenants included in our lease agreements. Certain of our leases include provisions for variable payments. These variable payments are typically determined based on a measure of throughput or actual days or another measure of usage and are not included in the calculation of lease liabilities and right-of-use assets.

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Lease Position

The table below presents the lease related assets and liabilities recorded on our condensed consolidated balance sheet as of March 31, 2019:

|  |  | March 31,
|  |  | 2019
| Classification on the Balance Sheet |  | (In thousands)
Assets |  |  |  |
Operating lease assets | Other long-term assets |  | $ | 29,798
Total lease assets |  |  | $ | 29,798
Liabilities |  |  |  |
Current liabilities: |  |  |  |
Operating lease liabilities | Current lease liabilities |  | $ | 10,991
Noncurrent liabilities: |  |  |  |
Operating lease liabilities | Other long-term liabilities |  | $ | 18,807
Total lease liabilities |  |  | $ | 29,798

Lease Costs

The table below presents certain information related to the lease costs for our operating leases for the three months ended March 31, 2019:

|  |  | Three Months Ended |
|  |  | March 31, |
|  |  | 2019 |
| (In thousands)
Operating lease cost |  |  | $ | 3,669 |
Short-term lease cost |  |  |  | 1,390 |
Variable lease cost |  |  |  | — |
Total lease cost |  |  | $ | 5,059 |

Other Information

The table below presents supplemental cash flow information related to leases for the three months ended March 31, 2019:

|  | Three Months Ended March 31,
|  | 2019
|  | (In thousands)
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Operating cash flows for operating leases |  | $ | 3,669

Lease Terms and Discount Rates

The table below presents certain information related to the weighted average remaining lease terms and weighted average discount rates for our operating leases as of March 31, 2019:

|  |  | Three Months Ended |
|  |  | March 31, |
|  |  | 2019 |
Weighted-average remaining lease term - operating leases |  |  |  | 2.63 years |
Weighted-average discount rate - operating leases |  |  |  | 5.71% |

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Undiscounted Cash Flows

The table below reconciled the undiscounted cash flows for each of the first five years and the total remaining years to the operating lease liabilities recorded on the balance sheet as of March 31, 2019:

|  | March 31, 2019 |
|  | (In thousands) |
2019 |  | $ | 9,407 |
2020 |  |  | 8,846 |
2021 |  |  | 5,832 |
2022 |  |  | 3,301 |
2023 |  |  | 1,918 |
Thereafter |  |  | 7,682 |
Total undiscounted lease liability |  |  | 36,986 |
Less: amount of lease payments representing interest |  |  | (7,188) |
Long-term lease obligations |  | $ | 29,798 |

As of March 31, 2019, we had additional leases that have not yet commenced of approximately $8.6 million. These leases will commence in the fourth quarter of 2019 with lease terms of 12 years.

The minimum rental commitments under non-cancelable operating leases under ASC 840 as disclosed in our 2018 Annual Report, with lease terms in excess of one year subsequent to December 31, 2018, were as follows:

|  | December 31, 2018
|  | (In thousands)
2019 |  | $ | 10,701
2020 |  |  | 7,104
2021 |  |  | 3,774
2022 |  |  | 2,356
2023 |  |  | 1,538
Thereafter |  |  | 7,482
Total minimum lease payments |  | $ | 32,955

Note 13 Condensed Consolidating Financial Information

Nabors has fully and unconditionally guaranteed all of the issued public debt securities of Nabors Delaware, a 100% wholly owned subsidiary. The following condensed consolidating financial information is included so that separate financial statements of Nabors Delaware are not required to be filed with the SEC. The condensed consolidating financial statements present investments in both consolidated and unconsolidated affiliates using the equity method of accounting.

The following condensed consolidating financial information presents condensed consolidating balance sheets as of March 31, 2019 and December 31, 2018, statements of income (loss) and statements of other comprehensive income (loss) for the three months ended March 31, 2019 and 2018, and statements of cash flows for the three months ended March 31, 2019 and 2018 of (a) Nabors, parent/guarantor, (b) Nabors Delaware, issuer of public debt securities guaranteed by Nabors, (c) the non-guarantor subsidiaries, (d) consolidating adjustments necessary to consolidate Nabors and its subsidiaries and (e) Nabors on a consolidated basis.

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Condensed Consolidating Balance Sheets

|  | March 31, 2019 |
|  |  |  |  |  |  |  | Other |  |  |  |  |  |  |
|  | Nabors |  |  | Nabors |  | Subsidiaries |  |  |  |  |  |  |
|  | (Parent/ |  | Delaware |  | (Non- |  | Consolidating |  |  |  |
|  | Guarantor) |  | (Issuer) |  | Guarantors) |  | Adjustments |  | Total |
|  | (In thousands) |
|  | ASSETS |
Current assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 334 |  | $ | 41 |  | $ | 428,752 |  | $ | — |  | $ | 429,127 |
Short-term investments |  |  | — |  |  | — |  |  | 40,590 |  |  | — |  |  | 40,590 |
Accounts receivable, net |  |  | — |  |  | — |  |  | 743,528 |  |  | — |  |  | 743,528 |
Inventory, net |  |  | — |  |  | — |  |  | 166,139 |  |  | — |  |  | 166,139 |
Assets held for sale |  |  | — |  |  | — |  |  | 12,330 |  |  | — |  |  | 12,330 |
Other current assets |  |  | 417 |  |  | 433 |  |  | 163,339 |  |  | — |  |  | 164,189 |
Total current assets |  |  | 751 |  |  | 474 |  |  | 1,554,678 |  |  | — |  |  | 1,555,903 |
Property, plant and equipment, net |  |  | — |  |  | — |  |  | 5,399,514 |  |  | — |  |  | 5,399,514 |
Goodwill |  |  | — |  |  | — |  |  | 184,104 |  |  | — |  |  | 184,104 |
Intercompany receivables |  |  | 100,764 |  |  | 219,756 |  |  | 2,611 |  |  | (323,131) |  |  | — |
Investment in consolidated affiliates |  |  | 2,492,908 |  |  | 5,568,841 |  |  | 4,118,531 |  |  | (12,180,280) |  |  | — |
Deferred income taxes |  |  | — |  |  | 399,679 |  |  | 344,531 |  |  | (399,679) |  |  | 344,531 |
Other long-term assets |  |  | — |  |  | 110 |  |  | 303,847 |  |  | (14,325) |  |  | 289,632 |
Total assets |  | $ | 2,594,423 |  | $ | 6,188,860 |  | $ | 11,907,816 |  | $ | (12,917,415) |  | $ | 7,773,684 |
|  | LIABILITIES AND EQUITY |
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current portion of debt |  | $ | — |  | $ | — |  | $ | 850 |  | $ | — |  | $ | 850 |
Trade accounts payable |  |  | 118 |  |  | 41 |  |  | 399,643 |  |  | — |  |  | 399,802 |
Accrued liabilities |  |  | 7,970 |  |  | 18,985 |  |  | 271,104 |  |  | — |  |  | 298,059 |
Income taxes payable |  |  | — |  |  | — |  |  | 26,100 |  |  | — |  |  | 26,100 |
Current lease liabilities |  |  | — |  |  | — |  |  | 10,991 |  |  | — |  |  | 10,991 |
Total current liabilities |  |  | 8,088 |  |  | 19,026 |  |  | 708,688 |  |  | — |  |  | 735,802 |
Long-term debt |  |  | — |  |  | 3,691,905 |  |  | — |  |  | (14,325) |  |  | 3,677,580 |
Other long-term liabilities |  |  | — |  |  | 29,331 |  |  | 251,260 |  |  | — |  |  | 280,591 |
Deferred income taxes |  |  | — |  |  | — |  |  | 419,428 |  |  | (399,679) |  |  | 19,749 |
Intercompany payable |  |  | — |  |  | — |  |  | 323,131 |  |  | (323,131) |  |  | — |
Total liabilities |  |  | 8,088 |  |  | 3,740,262 |  |  | 1,702,507 |  |  | (737,135) |  |  | 4,713,722 |
Redeemable noncontrolling interest in subsidiary |  |  | — |  |  | — |  |  | 409,923 |  |  | — |  |  | 409,923 |
Shareholders’ equity |  |  | 2,586,335 |  |  | 2,448,598 |  |  | 9,731,682 |  |  | (12,180,280) |  |  | 2,586,335 |
Noncontrolling interest |  |  | — |  |  | — |  |  | 63,704 |  |  | — |  |  | 63,704 |
Total equity |  |  | 2,586,335 |  |  | 2,448,598 |  |  | 9,795,386 |  |  | (12,180,280) |  |  | 2,650,039 |
Total liabilities and equity |  | $ | 2,594,423 |  | $ | 6,188,860 |  | $ | 11,907,816 |  | $ | (12,917,415) |  | $ | 7,773,684 |

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Condensed Consolidating Balance Sheets

|  | December 31, 2018 |
|  |  |  |  |  |  |  | Other |  |  |  |  |  |  |
|  | Nabors |  | Nabors |  | Subsidiaries |  |  |  |  |  |  |
|  | (Parent/ |  | Delaware |  | (Non- |  | Consolidating |  |  |  |
|  | Guarantor) |  | (Issuer) |  | Guarantors) |  | Adjustments |  | Total |
|  | (In thousands) |
|  | ASSETS |
Current assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 474 |  | $ | 42 |  | $ | 447,250 |  | $ | — |  | $ | 447,766 |
Short-term investments |  |  | — |  |  | — |  |  | 34,036 |  |  | — |  |  | 34,036 |
Accounts receivable, net |  |  | — |  |  | — |  |  | 756,320 |  |  | — |  |  | 756,320 |
Inventory, net |  |  | — |  |  | — |  |  | 165,587 |  |  | — |  |  | 165,587 |
Assets held for sale |  |  | — |  |  | — |  |  | 12,250 |  |  | — |  |  | 12,250 |
Other current assets |  |  | 50 |  |  | 433 |  |  | 177,121 |  |  | — |  |  | 177,604 |
Total current assets |  |  | 524 |  |  | 475 |  |  | 1,592,564 |  |  | — |  |  | 1,593,563 |
Property, plant and equipment, net |  |  | — |  |  | — |  |  | 5,467,870 |  |  | — |  |  | 5,467,870 |
Goodwill |  |  | — |  |  | — |  |  | 183,914 |  |  | — |  |  | 183,914 |
Intercompany receivables |  |  | 95,946 |  |  | 218,129 |  |  | 2,611 |  |  | (316,686) |  |  | — |
Investment in consolidated affiliates |  |  | 2,658,827 |  |  | 5,494,886 |  |  | 4,079,269 |  |  | (12,232,982) |  |  | — |
Deferred income taxes |  |  | — |  |  | 388,089 |  |  | 345,091 |  |  | (388,089) |  |  | 345,091 |
Other long-term assets |  |  | — |  |  | 142 |  |  | 277,689 |  |  | (14,325) |  |  | 263,506 |
Total assets |  | $ | 2,755,297 |  | $ | 6,101,721 |  | $ | 11,949,008 |  | $ | (12,952,082) |  | $ | 7,853,944 |
|  | LIABILITIES AND EQUITY |
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current portion of debt |  | $ | — |  | $ | — |  | $ | 561 |  | $ | — |  | $ | 561 |
Trade accounts payable |  |  | 132 |  |  | 14 |  |  | 392,697 |  |  | — |  |  | 392,843 |
Accrued liabilities |  |  | 28,815 |  |  | 62,830 |  |  | 326,267 |  |  | — |  |  | 417,912 |
Income taxes payable |  |  | — |  |  | — |  |  | 20,761 |  |  | — |  |  | 20,761 |
Total current liabilities |  |  | 28,947 |  |  | 62,844 |  |  | 740,286 |  |  | — |  |  | 832,077 |
Long-term debt |  |  | — |  |  | 3,600,209 |  |  | — |  |  | (14,325) |  |  | 3,585,884 |
Other long-term liabilities |  |  | — |  |  | 29,331 |  |  | 245,154 |  |  | — |  |  | 274,485 |
Deferred income taxes |  |  | — |  |  | — |  |  | 394,400 |  |  | (388,089) |  |  | 6,311 |
Intercompany payable |  |  | 25,500 |  |  | — |  |  | 291,186 |  |  | (316,686) |  |  | — |
Total liabilities |  |  | 54,447 |  |  | 3,692,384 |  |  | 1,671,026 |  |  | (719,100) |  |  | 4,698,757 |
Redeemable noncontrolling interest in subsidiary |  |  | — |  |  | — |  |  | 404,861 |  |  | — |  |  | 404,861 |
Shareholders’ equity |  |  | 2,700,850 |  |  | 2,409,337 |  |  | 9,823,645 |  |  | (12,232,982) |  |  | 2,700,850 |
Noncontrolling interest |  |  | — |  |  | — |  |  | 49,476 |  |  | — |  |  | 49,476 |
Total equity |  |  | 2,700,850 |  |  | 2,409,337 |  |  | 9,873,121 |  |  | (12,232,982) |  |  | 2,750,326 |
Total liabilities and equity |  | $ | 2,755,297 |  | $ | 6,101,721 |  | $ | 11,949,008 |  | $ | (12,952,082) |  | $ | 7,853,944 |

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Condensed Consolidating Statements of Income (Loss)

|  | Three Months Ended March 31, 2019 |
|  |  |  |  | Nabors |  | Other |  |  |  |  |  |  |
|  | Nabors |  | Delaware |  | Subsidiaries |  |  |  |  |  |  |
|  | (Parent/ |  | (Issuer/ |  | (Non- |  | Consolidating |  |  |  |
|  | Guarantor) |  | Guarantor) |  | Guarantors) |  | Adjustments |  | Total |
|  | (In thousands) |
Revenues and other income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | — |  | $ | — |  | $ | 799,640 |  | $ | — |  | $ | 799,640 |
Earnings (losses) from unconsolidated affiliates |  |  | — |  |  | — |  |  | (5) |  |  | — |  |  | (5) |
Earnings (losses) from consolidated affiliates |  |  | (115,046) |  |  | 73,918 |  |  | 35,117 |  |  | 6,011 |  |  | — |
Investment income (loss) |  |  | — |  |  | — |  |  | 10,205 |  |  | (528) |  |  | 9,677 |
Total revenues and other income |  |  | (115,046) |  |  | 73,918 |  |  | 844,957 |  |  | 5,483 |  |  | 809,312 |
Costs and other deductions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Direct costs |  |  | — |  |  | — |  |  | 520,957 |  |  | — |  |  | 520,957 |
General and administrative expenses |  |  | 2,414 |  |  | 277 |  |  | 65,650 |  |  | (174) |  |  | 68,167 |
Research and engineering |  |  | — |  |  | — |  |  | 13,520 |  |  | — |  |  | 13,520 |
Depreciation and amortization |  |  | — |  |  | 31 |  |  | 210,360 |  |  | — |  |  | 210,391 |
Interest expense, net |  |  | — |  |  | 52,750 |  |  | (398) |  |  | — |  |  | 52,352 |
Other, net |  |  | 237 |  |  | (2,667) |  |  | 19,758 |  |  | 174 |  |  | 17,502 |
Intercompany interest expense, net |  |  | 12 |  |  | — |  |  | (12) |  |  | — |  |  | — |
Total costs and other deductions |  |  | 2,663 |  |  | 50,391 |  |  | 829,835 |  |  | — |  |  | 882,889 |
Income (loss) from continuing operations before income taxes |  |  | (117,709) |  |  | 23,527 |  |  | 15,122 |  |  | 5,483 |  |  | (73,577) |
Income tax expense (benefit) |  |  | — |  |  | (11,590) |  |  | 41,389 |  |  | — |  |  | 29,799 |
Income (loss) from continuing operations, net of tax |  |  | (117,709) |  |  | 35,117 |  |  | (26,267) |  |  | 5,483 |  |  | (103,376) |
Income (loss) from discontinued operations, net of tax |  |  | — |  |  | — |  |  | (157) |  |  | — |  |  | (157) |
Net income (loss) |  |  | (117,709) |  |  | 35,117 |  |  | (26,424) |  |  | 5,483 |  |  | (103,533) |
Less: Net (income) loss attributable to noncontrolling interest |  |  | — |  |  | — |  |  | (14,176) |  |  | — |  |  | (14,176) |
Net income (loss) attributable to Nabors |  |  | (117,709) |  |  | 35,117 |  |  | (40,600) |  |  | 5,483 |  |  | (117,709) |
Less: Preferred stock dividend |  |  | (4,313) |  |  | — |  |  | — |  |  | — |  |  | (4,313) |
Net income (loss) attributable to Nabors common shareholders |  | $ | (122,022) |  | $ | 35,117 |  | $ | (40,600) |  | $ | 5,483 |  | $ | (122,022) |

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Condensed Consolidating Statements of Income (Loss)

|  | Three Months Ended March 31, 2018 |
|  |  |  |  | Nabors |  | Other |  |  |  |  |  |  |
|  | Nabors |  | Delaware |  | Subsidiaries |  |  |  |  |  |  |
|  | (Parent/ |  | (Issuer/ |  | (Non- |  | Consolidating |  |  |  |
|  | Guarantor) |  | Guarantor) |  | Guarantors) |  | Adjustments |  | Total |
|  | (In thousands) |
Revenues and other income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | — |  | $ | — |  | $ | 734,194 |  | $ | — |  | $ | 734,194 |
Earnings (losses) from unconsolidated affiliates |  |  | — |  |  | — |  |  | 2 |  |  | — |  |  | 2 |
Earnings (losses) from consolidated affiliates |  |  | (141,825) |  |  | 23,985 |  |  | (26,525) |  |  | 144,365 |  |  | — |
Investment income (loss) |  |  | 2 |  |  | — |  |  | 3,444 |  |  | (2,981) |  |  | 465 |
Total revenues and other income |  |  | (141,823) |  |  | 23,985 |  |  | 711,115 |  |  | 141,384 |  |  | 734,661 |
Costs and other deductions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Direct costs |  |  | — |  |  | — |  |  | 475,403 |  |  | — |  |  | 475,403 |
General and administrative expenses |  |  | 2,383 |  |  | 242 |  |  | 72,115 |  |  | (169) |  |  | 74,571 |
Research and engineering |  |  | — |  |  | — |  |  | 15,806 |  |  | — |  |  | 15,806 |
Depreciation and amortization |  |  | — |  |  | 30 |  |  | 213,418 |  |  | — |  |  | 213,448 |
Interest expense, net |  |  | — |  |  | 65,325 |  |  | (3,939) |  |  | — |  |  | 61,386 |
Other, net |  |  | (5) |  |  | — |  |  | 13,925 |  |  | 169 |  |  | 14,089 |
Total costs and other deductions |  |  | 2,378 |  |  | 65,597 |  |  | 786,728 |  |  | — |  |  | 854,703 |
Income (loss) from continuing operations before income taxes |  |  | (144,201) |  |  | (41,612) |  |  | (75,613) |  |  | 141,384 |  |  | (120,042) |
Income tax expense (benefit) |  |  | — |  |  | (15,087) |  |  | 38,632 |  |  | — |  |  | 23,545 |
Income (loss) from continuing operations, net of tax |  |  | (144,201) |  |  | (26,525) |  |  | (114,245) |  |  | 141,384 |  |  | (143,587) |
Income (loss) from discontinued operations, net of tax |  |  | — |  |  | — |  |  | (75) |  |  | — |  |  | (75) |
Net income (loss) |  |  | (144,201) |  |  | (26,525) |  |  | (114,320) |  |  | 141,384 |  |  | (143,662) |
Less: Net (income) loss attributable to noncontrolling interest |  |  | — |  |  | — |  |  | (539) |  |  | — |  |  | (539) |
Net income (loss) attributable to Nabors |  | $ | (144,201) |  | $ | (26,525) |  | $ | (114,859) |  | $ | 141,384 |  | $ | (144,201) |
Less: Preferred stock dividend |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Net income (loss) attributable to Nabors common shareholders |  | $ | (144,201) |  | $ | (26,525) |  | $ | (114,859) |  | $ | 141,384 |  | $ | (144,201) |

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Condensed Consolidating Statements of Comprehensive Income (Loss)

|  | Three Months Ended March 31, 2019 |
|  |  |  |  | Nabors |  | Other |  |  |  |  |  |  |
|  | Nabors |  | Delaware |  | Subsidiaries |  |  |  |  |  |  |
|  | (Parent/ |  | (Issuer/ |  | (Non- |  | Consolidating |  |  |  |
|  | Guarantor) |  | Guarantor) |  | Guarantors) |  | Adjustments |  | Total |
|  | (In thousands) |
Net income (loss) attributable to Nabors |  | $ | (117,709) |  | $ | 35,117 |  | $ | (40,600) |  | $ | 5,483 |  | $ | (117,709) |
Other comprehensive income (loss) before tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Translation adjustment attributable to Nabors |  |  | 9,190 |  |  | (4) |  |  | 9,190 |  |  | (9,186) |  |  | 9,190 |
Pension liability amortization and adjustment |  |  | 54 |  |  | 54 |  |  | 108 |  |  | (162) |  |  | 54 |
Unrealized gains (losses) and amortization on cash flow hedges |  |  | 140 |  |  | 140 |  |  | 140 |  |  | (280) |  |  | 140 |
Other comprehensive income (loss) before tax |  |  | 9,384 |  |  | 190 |  |  | 9,438 |  |  | (9,628) |  |  | 9,384 |
Income tax expense (benefit) related to items of other comprehensive income (loss) |  |  | 46 |  |  | 46 |  |  | 92 |  |  | (138) |  |  | 46 |
Other comprehensive income (loss), net of tax |  |  | 9,338 |  |  | 144 |  |  | 9,346 |  |  | (9,490) |  |  | 9,338 |
Comprehensive income (loss) attributable to Nabors |  |  | (108,371) |  |  | 35,261 |  |  | (31,254) |  |  | (4,007) |  |  | (108,371) |
Net income (loss) attributable to noncontrolling interest |  |  | — |  |  | — |  |  | 14,176 |  |  | — |  |  | 14,176 |
Translation adjustment attributable to noncontrolling interest |  |  | — |  |  | — |  |  | 52 |  |  | — |  |  | 52 |
Comprehensive income (loss) attributable to noncontrolling interest |  |  | — |  |  | — |  |  | 14,228 |  |  | — |  |  | 14,228 |
Comprehensive income (loss) |  | $ | (108,371) |  | $ | 35,261 |  | $ | (17,026) |  | $ | (4,007) |  | $ | (94,143) |

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Condensed Consolidating Statements of Comprehensive Income (Loss)

|  | Three Months Ended March 31, 2018 |
|  |  |  |  | Nabors |  | Other |  |  |  |  |  |  |
|  | Nabors |  | Delaware |  | Subsidiaries |  |  |  |  |  |  |
|  | (Parent/ |  | (Issuer/ |  | (Non- |  | Consolidating |  |  |  |
|  | Guarantor) |  | Guarantor) |  | Guarantors) |  | Adjustments |  | Total |
|  | (In thousands) |
Net income (loss) attributable to Nabors |  | $ | (144,201) |  | $ | (26,525) |  | $ | (114,859) |  | $ | 141,384 |  | $ | (144,201) |
Other comprehensive income (loss) before tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Translation adjustment attributable to Nabors |  |  | (9,343) |  |  | — |  |  | (9,343) |  |  | 9,343 |  |  | (9,343) |
Pension liability amortization and adjustment |  |  | 54 |  |  | 54 |  |  | 108 |  |  | (162) |  |  | 54 |
Adoption of ASU No. 2016-01 |  |  | (9,144) |  |  | — |  |  | (9,144) |  |  | 9,144 |  |  | (9,144) |
Unrealized gains (losses) and amortization on cash flow hedges |  |  | 140 |  |  | 140 |  |  | 140 |  |  | (280) |  |  | 140 |
Other comprehensive income (loss) before tax |  |  | (18,293) |  |  | 194 |  |  | (18,239) |  |  | 18,045 |  |  | (18,293) |
Income tax expense (benefit) related to items of other comprehensive income (loss) |  |  | 43 |  |  | 43 |  |  | 86 |  |  | (129) |  |  | 43 |
Other comprehensive income (loss), net of tax |  |  | (18,336) |  |  | 151 |  |  | (18,325) |  |  | 18,174 |  |  | (18,336) |
Comprehensive income (loss) attributable to Nabors |  |  | (162,537) |  |  | (26,374) |  |  | (133,184) |  |  | 159,558 |  |  | (162,537) |
Net income (loss) attributable to noncontrolling interest |  |  | — |  |  | — |  |  | 539 |  |  | — |  |  | 539 |
Translation adjustment attributable to noncontrolling interest |  |  | — |  |  | — |  |  | (96) |  |  | — |  |  | (96) |
Comprehensive income (loss) attributable to noncontrolling interest |  |  | — |  |  | — |  |  | 443 |  |  | — |  |  | 443 |
Comprehensive income (loss) |  | $ | (162,537) |  | $ | (26,374) |  | $ | (132,741) |  | $ | 159,558 |  | $ | (162,094) |

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Condensed Consolidating Statements Cash Flows

|  | Three Months Ended March 31, 2019 |
|  |  |  |  | Nabors |  | Other |  |  |  |  |  |  |
|  | Nabors |  | Delaware |  | Subsidiaries |  |  |  |  |  |  |
|  | (Parent/ |  | (Issuer/ |  | (Non- |  | Consolidating |  |  |  |
|  | Guarantor) |  | Guarantor) |  | Guarantors) |  | Adjustments |  | Total |
|  | (In thousands) |
Net cash provided by (used for) operating activities |  | $ | 55,162 |  | $ | (88,799) |  | $ | 161,959 |  | $ | (58,468) |  | $ | 69,854 |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of investments |  |  | — |  |  | — |  |  | (4,221) |  |  | — |  |  | (4,221) |
Sales and maturities of investments |  |  | — |  |  | — |  |  | 1,134 |  |  | — |  |  | 1,134 |
Cash paid for acquisitions of businesses, net of cash acquired |  |  | — |  |  | — |  |  | (2,929) |  |  | — |  |  | (2,929) |
Cash paid for investments in consolidated affiliates |  |  | — |  |  | — |  |  | (4,000) |  |  | 4,000 |  |  | — |
Capital expenditures |  |  | — |  |  | — |  |  | (141,070) |  |  | — |  |  | (141,070) |
Proceeds from sales of assets and insurance claims |  |  | — |  |  | — |  |  | 2,642 |  |  | — |  |  | 2,642 |
Change in intercompany balances |  |  | — |  |  | (1,627) |  |  | 1,627 |  |  | — |  |  | — |
Net cash provided by (used for) investing activities |  |  | — |  |  | (1,627) |  |  | (146,817) |  |  | 4,000 |  |  | (144,444) |
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  | — |  |  | (35) |  |  | — |  |  | — |  |  | (35) |
Proceeds from revolving credit facilities |  |  | — |  |  | 180,000 |  |  | — |  |  | — |  |  | 180,000 |
Proceeds from parent contributions |  |  | — |  |  | 4,000 |  |  | — |  |  | (4,000) |  |  | — |
Proceeds from issuance of common shares, net of issuance costs |  |  | 6 |  |  | — |  |  | (6) |  |  | — |  |  | — |
Reduction of long-term debt |  |  | — |  |  | (43,540) |  |  | — |  |  | — |  |  | (43,540) |
Reduction in revolving credit facilities |  |  | — |  |  | (50,000) |  |  | — |  |  | — |  |  | (50,000) |
Dividends to common and preferred shareholders |  |  | (28,557) |  |  | — |  |  | (376) |  |  | 3,168 |  |  | (25,765) |
Proceeds from (payments for) short-term borrowings |  |  | — |  |  | — |  |  | 289 |  |  | — |  |  | 289 |
Proceeds from issuance of intercompany debt |  |  | 25,000 |  |  | — |  |  | (25,000) |  |  | — |  |  | — |
Paydown of intercompany debt |  |  | (50,500) |  |  | — |  |  | 50,500 |  |  | — |  |  | — |
Distribution from subsidiary to parent |  |  | — |  |  | — |  |  | (55,300) |  |  | 55,300 |  |  | — |
Other changes |  |  | (1,251) |  |  | — |  |  | (242) |  |  | — |  |  | (1,493) |
Net cash (used for) provided by financing activities |  |  | (55,302) |  |  | 90,425 |  |  | (30,135) |  |  | 54,468 |  |  | 59,456 |
Effect of exchange rate changes on cash and cash equivalents |  |  | — |  |  | — |  |  | (2,791) |  |  | — |  |  | (2,791) |
Net increase (decrease) in cash, cash equivalents and restricted cash |  |  | (140) |  |  | (1) |  |  | (17,784) |  |  | — |  |  | (17,925) |
Cash, cash equivalents and restricted cash, beginning of period |  |  | 474 |  |  | 42 |  |  | 450,564 |  |  | — |  |  | 451,080 |
Cash, cash equivalents and restricted cash, end of period |  | $ | 334 |  | $ | 41 |  | $ | 432,780 |  | $ | — |  | $ | 433,155 |

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Condensed Consolidating Statements Cash Flows

|  | Three Months Ended March 31, 2018 |
|  |  |  |  | Nabors |  | Other |  |  |  |  |  |  |
|  | Nabors |  | Delaware |  | Subsidiaries |  |  |  |  |  |  |
|  | (Parent/ |  | (Issuer/ |  | (Non- |  | Consolidating |  |  |  |
|  | Guarantor) |  | Guarantor) |  | Guarantors) |  | Adjustments |  | Total |
|  | (In thousands) |
Net cash provided by (used for) operating activities |  | $ | 22,374 |  | $ | (98,371) |  | $ | 19,295 |  | $ | (24,981) |  | $ | (81,683) |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of investments |  |  | — |  |  | — |  |  | (676) |  |  | — |  |  | (676) |
Sales and maturities of investments |  |  | — |  |  | — |  |  | 1,148 |  |  | — |  |  | 1,148 |
Capital expenditures |  |  | — |  |  | — |  |  | (94,026) |  |  | — |  |  | (94,026) |
Proceeds from sale of assets and insurance claims |  |  | — |  |  | — |  |  | 3,076 |  |  | — |  |  | 3,076 |
Change in intercompany balances |  |  | — |  |  | (122,864) |  |  | 122,864 |  |  | — |  |  | — |
Net cash provided by (used for) investing activities |  |  | — |  |  | (122,864) |  |  | 32,386 |  |  | — |  |  | (90,478) |
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  | — |  |  | (12,928) |  |  | — |  |  | — |  |  | (12,928) |
Reduction in long-term debt |  |  | — |  |  | (460,837) |  |  | — |  |  | — |  |  | (460,837) |
Reduction in revolving credit facilities |  |  | — |  |  | (680,000) |  |  | — |  |  | — |  |  | (680,000) |
Dividends to shareholders |  |  | (20,129) |  |  | — |  |  | — |  |  | 2,981 |  |  | (17,148) |
Proceeds from (payments for) commercial paper, net |  |  | — |  |  | (40,000) |  |  | — |  |  | — |  |  | (40,000) |
Proceeds from (payments for) issuance of intercompany debt |  |  | 20,000 |  |  | — |  |  | (20,000) |  |  | — |  |  | — |
Proceeds from revolving credit facilities |  |  | — |  |  | 615,000 |  |  | — |  |  | — |  |  | 615,000 |
Proceeds from issuance of long-term debt |  |  | — |  |  | 800,000 |  |  | — |  |  | — |  |  | 800,000 |
Paydown of intercompany debt |  |  | (21,000) |  |  | — |  |  | 21,000 |  |  | — |  |  | — |
Proceeds from (payments for) short-term borrowings |  |  | — |  |  | — |  |  | 194 |  |  | — |  |  | 194 |
Distribution from subsidiary to parent |  |  | — |  |  | — |  |  | (22,000) |  |  | 22,000 |  |  | — |
Other changes |  |  | (1,862) |  |  | — |  |  | (383) |  |  | — |  |  | (2,245) |
Net cash (used for) provided by financing activities |  |  | (22,991) |  |  | 221,235 |  |  | (21,189) |  |  | 24,981 |  |  | 202,036 |
Effect of exchange rate changes on cash and cash equivalents |  |  | — |  |  | — |  |  | (867) |  |  | — |  |  | (867) |
Net increase (decrease) in cash, cash equivalents and restricted cash |  |  | (617) |  |  | — |  |  | 29,625 |  |  | — |  |  | 29,008 |
Cash, cash equivalents and restricted cash, beginning of period |  |  | 1,091 |  |  | 44 |  |  | 340,894 |  |  | — |  |  | 342,029 |
Cash, cash equivalents and restricted cash, end of period |  | $ | 474 |  | $ | 44 |  | $ | 370,519 |  | $ | — |  | $ | 371,037 |

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

We often discuss expectations regarding our future markets, demand for our products and services, and our performance in our annual, quarterly and current reports, press releases, and other written and oral statements. Statements relating to matters that are not historical facts are “forward-looking statements” within the meaning of the safe harbor provisions of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). These “forward-looking statements” are based on an analysis of currently available competitive, financial and economic data and our operating plans. They are inherently uncertain and investors should recognize that events and actual results could turn out to be significantly different from our expectations. By way of illustration, when used in this document, words such as “anticipate,” “believe,” “expect,” “plan,” “intend,” “estimate,” “project,” “will,” “should,” “could,” “may,” “predict” and similar expressions are intended to identify forward-looking statements.

You should consider the following key factors when evaluating these forward-looking statements:

| · |  | fluctuations and volatility in worldwide prices of and demand for oil and natural gas;

| · |  | fluctuations in levels of oil and natural gas exploration and development activities;

| · |  | fluctuations in the demand for our services;

| · |  | competitive and technological changes and other developments in the oil and gas and oilfield services industries;

| · |  | our ability to renew customer contracts in order to maintain competitiveness;

| · |  | the existence of operating risks inherent in the oil and gas and oilfield services industries;

| · |  | the possibility of the loss of one or a number of our large customers;

| · |  | the impact of long-term indebtedness and other financial commitments on our financial and operating flexibility;

| · |  | our access to and the cost of capital, including the impact of a downgrade in our credit rating, covenant restrictions, availability under our unsecured revolving credit facilities, and future issuances of debt or equity securities;

| · |  | our dependence on our operating subsidiaries and investments to meet our financial obligations;

| · |  | our ability to retain skilled employees;

| · |  | our ability to complete, and realize the expected benefits of strategic transactions;

| · |  | the recent changes in U.S. tax laws and the possibility of changes in other tax laws and other laws and regulations;

| · |  | the possibility of political or economic instability, civil disturbance, war or acts of terrorism in any of the countries in which we do business;

| · |  | the possibility of changes to U.S. trade policies and regulations including the imposition of trade embargoes or sanctions; and

| · |  | general economic conditions, including the capital and credit markets.

Our businesses depend, to a large degree, on the level of spending by oil and gas companies for exploration, development and production activities. Therefore, a sustained increase or decrease in the price of oil or natural gas, that

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has a material impact on exploration, development and production activities, could also materially affect our financial position, results of operations and cash flows.

The above description of risks and uncertainties is by no means all-inclusive, but highlights certain factors that we believe are important for your consideration. For a more detailed description of risk factors that may affect us or our industry, please refer to Part II, Item 1A. — Risk Factors of this report and Item 1A. — Risk Factors in our 2018 Annual Report.

Management Overview

This section is intended to help you understand our results of operations and our financial condition. This information is provided as a supplement to, and should be read in conjunction with, our condensed consolidated financial statements and the accompanying notes thereto.

We own and operate one of the world’s largest land-based drilling rig fleets and provide offshore rigs in the United States and numerous international markets. Our business is comprised of our global land-based and offshore drilling rig operations and other rig related services and technologies, consisting of equipment manufacturing, rig instrumentation and optimization software. We also specialize in tubular services, wellbore placement solutions and are a leading provider of directional drilling and MWD systems and services.

Financial Results

Comparison of the three months ended March 31, 2019 and 2018

Operating revenues for the three months ended March 31, 2019 totaled $799.6 million, representing an increase of $65.4 million, or 9%, compared to the three months ended March 31, 2018. We experienced an increase in operating revenue across all of our operating segments, aside from International Drilling and Canada Drilling. Activity and pricing both increased in most of the segments, as a result of the improved market conditions with the most impactful increase in our U.S. Drilling and Rig Technologies operating segments, followed by Drilling Solutions. For a more detailed description of International Drilling and Canada Drilling operating results see Segment Results of Operations, below.

Net loss from continuing operations attributable to Nabors common shareholders totaled $121.9 million ($0.36 per diluted share) for the three months ended March 31, 2019 compared to a net loss from continuing operations attributable to Nabors common shareholders of $144.1 million ($0.46 per diluted share) for the three months ended March 31, 2018, or a $22.3 million decrease in the net loss. This improvement in the net loss was primarily attributable to a $26.8 million increase in our segments adjusted operating income compared to the prior period. The increase from our segments was partially offset by a $6.3 million increase in income tax expense.

General and administrative expenses for the three months ended March 31, 2019 totaled $68.2 million, representing a decrease of $6.4 million or 9%, compared to the three months ended March 31, 2018. This is reflective of a reduction in workforce and general cost-reduction efforts across our operating segments and our corporate offices.

Research and engineering expenses for the three months ended March 31, 2019 totaled $13.5 million, representing a decrease of $2.3 million, or 14%, compared to the three months ended March 31, 2018. The decrease is primarily attributable to a reduction in staffing levels and other cost control efforts across many of our research and engineering projects and initiatives.

Depreciation and amortization expense for the three months ended March 31, 2019 was $210.4 million, representing a decrease of $3.1 million, or 1%, compared to the three months ended March 31, 2018. The slight decrease was primarily due the impact from retirements and impairments of various rigs and equipment in late 2018, which more than offset the incremental depreciation during the period.

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Segment Results of Operations

The following tables set forth certain information with respect to our reportable segments and rig activity:

|  | Three Months Ended |  |  |  |  |  |  |
|  | March 31, |  |  |  |  |  |  |
|  | 2019 |  | 2018 |  | Increase/(Decrease) |  |
| (In thousands, except rig data and percentages) |  |
U.S. Drilling |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 320,209 |  | $ | 241,002 |  | $ | 79,207 |  | 33 | % |
Adjusted operating income (loss) (1) |  | $ | 24,683 |  | $ | (19,746) |  | $ | 44,429 |  | 225 | % |
Average rigs working (2) |  |  | 120.9 |  |  | 111.8 |  |  | 9.1 |  | 8 | % |
Canada Drilling |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 25,315 |  | $ | 31,887 |  | $ | (6,572) |  | (21) | % |
Adjusted operating income (loss) (1) |  | $ | (59) |  | $ | (592) |  | $ | 533 |  | 90 | % |
Average rigs working (2) |  |  | 16.3 |  |  | 21.1 |  |  | (4.8) |  | (23) | % |
International Drilling |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 337,256 |  | $ | 368,845 |  | $ | (31,589) |  | (9) | % |
Adjusted operating income (loss) (1) |  | $ | (5,637) |  | $ | 24,536 |  | $ | (30,173) |  | (123) | % |
Average rigs working (2) |  |  | 89.7 |  |  | 94.6 |  |  | (4.9) |  | (5) | % |
Drilling Solutions |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 65,422 |  | $ | 62,648 |  | $ | 2,774 |  | 4 | % |
Adjusted operating income (loss) (1) |  | $ | 12,855 |  | $ | 8,721 |  | $ | 4,134 |  | 47 | % |
Rig Technologies |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 71,753 |  | $ | 64,669 |  | $ | 7,084 |  | 11 | % |
Adjusted operating income (loss) (1) |  | $ | (5,148) |  | $ | (12,976) |  | $ | 7,828 |  | 60 | % |

| (1) |  | Adjusted operating income (loss) is our measure of segment profit and loss. See Note 10—Segment Information to the consolidated financial statements included in Item 1 of the report.

| (2) |  | Represents a measure of the average number of rigs operating during a given period. For example, one rig operating 45 days during a quarter represents approximately 0.5 average rigs working for the quarter. On an annual period, one rig operating 182.5 days represents approximately 0.5 average rigs working for the year.

U.S. Drilling

Operating results increased during the three months ended March 31, 2019 compared to the corresponding 2018 period primarily due to an increase in dayrates as market prices have continued to improve, resulting in approximately $33.4 million of the increase in adjusted operating income. Additionally, we experienced an increase in activity as reflected by an 8% increase in the average number of rigs working, which represented approximately $12.8 million of the increase in adjusted operating income.

Canada Drilling

Operating revenues decreased during the three months ended March 31, 2019 compared to the corresponding 2018 period primarily due to a 23% decrease in the average number of rigs working. Although the first quarter typically marks the peak season for our Canada drilling operations, this segment was adversely impacted by the industry-wide decline in rig count in Canada due to weak market conditions relative to the prior year period.

International Drilling

Operating results decreased during the three months ended March 31, 2019 compared to the corresponding 2018 period. Operating results for the period were unfavorably impacted by the expiration of higher margin contracts, decreased activity resulting from the sale of three working jackup rigs June of 2018 and dayrate reductions in certain regions, which were partially offset by new rig awards in lower margin regions. Additionally, operating results were impacted by the current instability and sanctions imposed in Venezuela and the temporary idling of our fleet there.

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Drilling Solutions

Operating results increased during the three months ended March 31, 2019 compared to the corresponding 2018 period. The increase in operating revenue was primarily due to increases in our performance tools offerings as activity in the U.S. has increased, and our tubular running services business which has expanded its activity in several international markets. The increase in operating income was also driven by the growth in our performance tools and tubular running services offerings as well as improved profitability from our wellbore placement offering due to effective cost reduction efforts across this business.

Rig Technologies

Operating results increased during the three months ended March 31, 2019 compared to the corresponding 2018 period primarily due to an increase in operating revenue from increased penetration into international markets as we continued the integration of Tesco and achieved further synergies throughout 2018, after the acquisition in the fourth quarter of 2018.

Other Financial Information

Interest expense

Interest expense for the three months ended March 31, 2019 was $52.4 million, representing a decrease of $9.0 million, or 15%, compared to the three months ended March 31, 2018. The decrease was primarily due to the repayment of approximately $303.5 million aggregate principal of our 9.25% senior notes due January 2019 prior to January 1, 2019, using the proceeds from the equity offering completed in May 2018.

Other, net

Other, net for the three months ended March 31, 2019 was $17.5 million of expense, which included net losses on sales and disposals of assets of approximately $3.6 million, an increase in litigation reserves of $7.1 million and foreign currency exchange losses of $8.6 million. Partially offsetting these losses was a gain on debt buybacks of $2.7 million.

Other, net for the three months ended March 31, 2018 was $14.1 million of expense, which included transaction related costs of $7.0 million, an increase in litigation reserves of $3.6 million, foreign currency exchange losses of $2.5 and net losses on sales and disposals of assets of approximately $2.2 million.

Income tax rate

Our worldwide effective tax rate for the three months ended March 31, 2019 was (40.5%) compared to (19.6%) for the three months ended March 31, 2018. The change in effective tax rate was a result of a change in our geographic mix of pre-tax earnings (losses), primarily due to pre-tax earnings in certain high tax jurisdictions causing a net income tax expense despite a consolidated pre-tax loss. This resulted in a negative tax rate for the three months ended March 31, 2019.

Liquidity and Capital Resources

Financial Condition and Sources of Liquidity

Our primary sources of liquidity are cash and investments, availability under our revolving credit facilities and cash generated from operations. As of March 31, 2019, we had cash and short-term investments of $469.7 million and working capital of $820.1 million. As of December 31, 2018, we had cash and short-term investments of $481.8 million and working capital of $761.5 million. At March 31, 2019, we had $300.0 million of borrowings outstanding under our revolving credit facilities.

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We had 15 letter-of-credit facilities with various banks as of March 31, 2019. Availability under these facilities as of March 31, 2019 was as follows:

|  | March 31, |
|  | 2019 |
|  | (In thousands) |
Credit available |  | $ | 677,571 |
Less: Letters of credit outstanding, inclusive of financial and performance guarantees |  |  | 96,365 |
Remaining availability |  | $ | 581,206 |

Our gross debt to capital ratio was 0.59:1 as of March 31, 2019 and 0.57:1 as of December 31, 2018. Our net debt to capital ratio was 0.55:1 as of March 31, 2019 and 0.53:1 as of December 31, 2018. The gross debt to capital ratio is calculated by dividing total debt by total capitalization (total debt plus shareholders’ equity). The net debt to capital ratio is calculated by dividing net debt by net capitalization. Net debt is defined as total debt minus the sum of cash and cash equivalents and short-term investments. Net capitalization is defined as net debt plus shareholders’ equity. Availability under both the 2012 Revolving Credit Facility and the 2018 Revolving Credit Facility is subject to a covenant not to exceed a net debt to capital ratio of 0.60:1. As of March 31, 2019, our net debt could be higher by approximately $630.0 million, while still maintaining our net debt to capital ratio of 0.60:1. Borrowing from the revolving credit facilities to pay down other debt, such as the 5.00% senior notes due September 2020, does not adversely impact the ratio calculation. Therefore, the entire balance under the revolving credit facilities could be drawn to pay down outstanding debt. The ratio is only materially impacted by borrowing under the revolving credit facility to use for purposes other than retiring debt, which would increase our net debt. We can limit or control our spending through reductions in discretionary capital or other types of controllable expenditures, monetization of assets, accessing capital markets through a variety of alternative methods, or any combination of these alternatives if needed. We cannot make any assurances as to our ability to implement any or all of these alternatives.

In addition, availability under the new 2018 Revolving Credit Facility is subject to a covenant that during any period in which Nabors Delaware fails to maintain an investment grade rating from at least two ratings agencies, the guarantors under the facility and their subsidiaries we will be required to maintain an asset to debt coverage ratio of at least 2.50:1. In light of our credit ratings as of March 31, 2019, we are required to comply with this covenant. As of March 31, 2019, our asset to debt coverage ratio was 3.74:1. The asset to debt coverage ratio is calculated by dividing (x) drilling-related fixed assets wholly owned by the 2018 Revolver Guarantors or wholly owned subsidiaries of the 2018 Revolver Guarantors by (y) total debt of the 2018 Revolver Guarantors (subject to certain exclusions).

As of the date of this report, we were in compliance with all covenants under the 2018 Revolving Credit Facility and 2012 Revolving Credit Facility. If we fail to perform our obligations under the covenants, the revolving credit commitments under the 2012 Revolving Credit Facility and the 2018 Revolving Credit Facility could be terminated, and any outstanding borrowings under the facilities could be declared immediately due and payable. If necessary, we have the ability to manage these ratios by taking certain actions including reductions in discretionary capital or other types of controllable expenditures, monetization of assets, amending or renegotiating the revolving credit agreement, accessing capital markets through a variety of alternative methods, or any combination of these alternatives. The gross debt to capital ratio, the net debt to capital ratio and the asset to debt coverage ratio are not measures of operating performance or liquidity defined by U.S. GAAP and may not be comparable to similarly titled measures presented by other companies.

Our interest coverage ratio was 3.6:1 as of March 31, 2019 and 3.3:1 as of December 31, 2018. The interest coverage ratio is a trailing 12-month quotient of the sum of operating revenues, direct costs, general administrative expenses and research and engineering expenses divided by interest expense. The interest coverage ratio is not a measure of operating performance or liquidity defined by U.S. GAAP and may not be comparable to similarly titled measures presented by other companies.

Our ability to access capital markets or to otherwise obtain sufficient financing may be affected by our senior unsecured debt ratings as provided by the major credit rating agencies in the United States and our historical ability to access these markets as needed. While there can be no assurances that we will be able to access these markets in the future, we believe that we will be able to access capital markets or otherwise obtain financing in order to satisfy any payment obligation that might arise upon maturity, exchange or purchase of our notes and our debt facilities, loss of availability of our revolving credit facility, and that any cash payment due, in addition to our other cash obligations, would not ultimately have a material adverse impact on our liquidity or financial position. The major U.S. credit rating

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agencies have downgraded our senior unsecured debt rating to non-investment grade. These and further ratings downgrades could adversely impact our ability to access debt markets in the future, increase the cost of future debt, and potentially require us to post letters of credit for certain obligations.

Future Cash Requirements

Our current cash and investments, projected cash flows from operations, proceeds from equity or debt issuances, and our revolving credit facility are expected to adequately finance our purchase commitments, capital expenditures, acquisitions, scheduled debt service requirements, and all other expected cash requirements for the next 12 months.

We expect capital expenditures over the next 12 months to be approximately $0.4 billion. Purchase commitments outstanding at March 31, 2019 totaled approximately $241.0 million, primarily for rig-related enhancements, new construction and equipment, as well as sustaining capital expenditures, other operating expenses and purchases of inventory. We can reduce planned expenditures if necessary or increase them if market conditions and new business opportunities warrant it. The level of our outstanding purchase commitments and our expected level of capital expenditures over the next 12 months represent a number of capital programs that are currently underway or planned.

We have historically completed a number of acquisitions and will continue to evaluate opportunities to acquire assets or businesses to enhance our operations. Several of our previous acquisitions were funded using existing cash or debt or by issuing our common shares, such as our acquisition of Tesco in December 2017. Future acquisitions may be funded using existing cash or by issuing debt or additional shares of the Company. Such capital expenditures and acquisitions will depend on our view of market conditions and other factors.

See our discussion of guarantees issued by Nabors that could have a potential impact on our financial position, results of operations or cash flows in future periods included below under “Off-Balance Sheet Arrangements (Including Guarantees)”.

There have been no material changes to the contractual cash obligations table that was included in our 2018 Annual Report.

On August 25, 2015, our Board of Directors authorized a share repurchase program (the “program”) under which we may repurchase, from time to time, up to $400.0 million of our common shares by various means, including in the open market or in privately negotiated transactions. Authorization for the program, which was renewed in February 2019, does not have an expiration date and does not obligate us to repurchase any of our common shares. Since establishing the program, we have repurchased 14.0 million of our common shares for an aggregate purchase price of approximately $119.4 million under this program. As of March 31, 2019, the remaining amount authorized under the program that may be used to purchase shares was $280.6 million. The repurchased shares, which are held by our subsidiaries, are registered and tradable subject to applicable securities law limitations and have the same voting and other rights as other outstanding shares. As of March 31, 2019, our subsidiaries held 52.8 million of our common shares.

We may from time to time seek to retire or purchase our outstanding debt through cash purchases and/or exchanges for equity securities, both in open-market purchases, privately negotiated transactions or otherwise. Such repurchases or exchanges, if any, will depend on prevailing market conditions, our liquidity requirements, contractual restrictions and other factors and may involve material amounts.

Cash Flows

Our cash flows depend, to a large degree, on the level of spending by oil and gas companies for exploration, development and production activities. Sustained decreases in the price of oil or natural gas could have a material impact on these activities, and could also materially affect our cash flows. Certain sources and uses of cash, such as the level of discretionary capital expenditures or acquisitions, purchases and sales of investments, dividends, loans, issuances and repurchases of debt and of our common shares are within our control and are adjusted as necessary based on market conditions. We discuss our cash flows for the three months ended March 31, 2019 and 2018 below.

Operating Activities. Net cash provided by operating activities totaled $69.9 million during the three months ended March 31, 2019, compared to net cash used of $81.7 million during the corresponding 2018 period. Operating cash flows are our primary source of capital and liquidity. The increase in cash flows from operations is primarily attributable to

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increases in activity and margins. Additionally, changes in working capital items such as collection of receivables, other deferred revenue arrangements and payments of operating payables and interest payments are significant factors affecting operating cash flows. Changes in working capital items used $54.6 million and $184.0 million in cash during the three months ended March 31, 2019 and 2018, respectively.

Investing Activities. Net cash used for investing activities totaled $144.4 million during the three months ended March 31, 2019 compared to $90.5 million during the corresponding 2018 period. Our primary use of cash for investing activities is for capital expenditures related to rig-related enhancements, new construction and equipment, as well as sustaining capital expenditures. During the three months ended March 31, 2019 and 2018, we used cash for capital expenditures totaling $141.1 million and $94.0 million, respectively.

Financing Activities. Net cash provided by financing activities totaled $59.5 million during the three months ended March 31, 2019 compared to net cash provided of $202.0 million during the corresponding 2018 period. During the three months ended March 31, 2019, we received net proceeds of $130.0 million in amounts borrowed under our revolving credit facilities, partially offset by a $43.5 million repayment on our senior notes. Additionally, we paid dividends totaling $25.8 million to our common and preferred shareholders.

Other Matters

Recent Accounting Pronouncements

See Note 2 — Summary of Significant Accounting Policies.

Off-Balance Sheet Arrangements (Including Guarantees)

We are a party to transactions, agreements or other contractual arrangements defined as “off-balance sheet arrangements” that could have a material future effect on our financial position, results of operations, liquidity and capital resources. The most significant of these off-balance sheet arrangements involve agreements and obligations under which we provide financial or performance assurance to third parties. Certain of these agreements serve as guarantees, including standby letters of credit issued on behalf of insurance carriers in conjunction with our workers’ compensation insurance program and other financial surety instruments such as bonds. In addition, we have provided indemnifications, which serve as guarantees, to some third parties. These guarantees include indemnification provided by us to our share transfer agent and our insurance carriers. We are not able to estimate the potential future maximum payments that might be due under our indemnification guarantees. Management believes the likelihood that we would be required to perform or otherwise incur any material losses associated with any of these guarantees is remote.

The following table summarizes the total maximum amount of financial guarantees issued by Nabors:

|  | Maximum Amount |
|  | 2019 |  | 2020 |  | 2021 |  | Thereafter |  | Total |
|  | (In thousands) |
Financial standby letters of credit and other financial surety instruments |  | $ | 213,018 |  | 1,168 |  | — |  | — |  | $ | 214,186 |

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We may be exposed to market risks arising from the use of financial instruments in the ordinary course of business as discussed in our 2018 Annual Report. There were no material changes in our exposure to market risk during the three months ended March 31, 2019 from those disclosed in our 2018 Annual Report.

ITEM 4. CONTROLS AND PROCEDURES

We maintain a set of disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d‑15(e) under the Exchange Act) designed to provide reasonable assurance that information required to be disclosed in our reports filed under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to management as appropriate to allow timely decisions regarding required disclosure. We have investments in certain unconsolidated entities that we do not control or manage. Because we do not control or manage these entities, our disclosure controls and procedures

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with respect to these entities are necessarily more limited than those we maintain with respect to our consolidated subsidiaries.

The Company’s management, with the participation of the Chief Executive Officer and the Chief Financial Officer, has evaluated the effectiveness of the Company’s disclosure controls and procedures as of the end of the period covered by this report. Based on this evaluation, the Chief Executive Officer and the Chief Financial Officer have concluded that the Company’s disclosure controls and procedures were effective as of the end of the period covered by this report.

There were no changes in our internal control over financial reporting during the quarter ended March 31, 2019 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

Nabors and its subsidiaries are defendants or otherwise involved in a number of lawsuits in the ordinary course of business. We estimate the range of our liability related to pending litigation when we believe the amount and range of loss can be estimated. We record our best estimate of a loss when the loss is considered probable. When a liability is probable and there is a range of estimated loss with no best estimate in the range, we record the minimum estimated liability related to the lawsuits or claims. As additional information becomes available, we assess the potential liability related to our pending litigation and claims and revise our estimates. Due to uncertainties related to the resolution of lawsuits and claims, the ultimate outcome may differ from our estimates. For matters where an unfavorable outcome is reasonably possible and significant, we disclose the nature of the matter and a range of potential exposure, unless an estimate cannot be made at the time of disclosure. In the opinion of management and based on liability accruals provided, our ultimate exposure with respect to these pending lawsuits and claims is not expected to have a material adverse effect on our condensed consolidated financial position or cash flows, although they could have a material adverse effect on our results of operations for a particular reporting period. See Note 7 — Commitments and Contingencies — Litigation for a description of such proceedings.

ITEM 1A. RISK FACTORS

In addition to the information set forth elsewhere in this report, the risk factors set forth in Part 1, Item 1A, of our 2018 Annual Report, should be carefully considered when evaluating us. These risks are not the only risks we face. Additional risks not presently known to us or that we currently deem immaterial may also impair our business.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

We withheld the following shares of our common stock to satisfy tax withholding obligations in connection with grants of stock awards during the three months ended March 31, 2019 from the distributions described below. These shares may be deemed to be “issuer purchases” of shares that are required to be disclosed pursuant to this Item, but were not purchased as part of a publicly announced program to purchase common shares:

|  |  |  |  |  |  |  |  | Approximated |
|  |  |  |  |  |  | Total Number |  | Dollar Value of |
|  |  |  |  |  |  | of Shares |  | Shares that May |
|  | Total |  | Average |  | Purchased as |  | Yet Be |
|  | Number of |  | Price |  | Part of Publicly |  | Purchased |
Period |  | Shares |  | Paid per |  | Announced |  | Under the |
(In thousands, except per share amounts) |  | Repurchased |  | Share (1) |  | Program |  | Program (2) |
January 1 - January 31 |  | 65 |  | $ | 2.19 |  | — |  | 280,645 |
February 1 - February 28 |  | 213 |  | $ | 3.13 |  | — |  | 280,645 |
March 1 - March 31 |  | 130 |  | $ | 3.35 |  | — |  | 280,645 |

| (1) |  | Shares were withheld from employees and directors to satisfy certain tax withholding obligations due in connection with grants of shares under our 2013 Stock Plan and 2016 Stock Plan. Each of the 2016 Stock Plan, the 2013 Stock Plan, the 2003 Employee Stock Plan and the 1999 Stock Option Plan for Non-Employee Directors provide for the withholding of shares to satisfy tax obligations, but do not specify a maximum number of shares that can be

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withheld for this purpose. These shares were not purchased as part of a publicly announced program to purchase common shares.

| (2) |  | In August 2015, our Board of Directors authorized a share repurchase program under which we may repurchase up to $400.0 million of our common shares in the open market or in privately negotiated transactions. The program was renewed by the Board in February 2019. Through March 31, 2019, we repurchased 14.0 million of our common shares for an aggregate purchase price of approximately $119.4 million under this program. As of March 31, 2019, we had $280.6 million that remained authorized under the program that may be used to repurchase shares. The repurchased shares, which are held by our subsidiaries, are registered and tradable subject to applicable securities law limitations and have the same voting, dividend and other rights as other outstanding shares. As of March 31, 2019, our subsidiaries held 52.8 million of our common shares.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

None.

ITEM 6. EXHIBITS

Exhibit No. |  | Description
31.1 |  | Rule 13a-14(a)/15d-14(a) Certification of Anthony G. Petrello, Chairman, President and Chief Executive Officer*
31.2 |  | Rule 13a-14(a)/15d-14(a) Certification of William Restrepo, Chief Financial Officer*
32.1 |  | Certifications required by Rule 13a-14(b) or Rule 15d-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350), executed by Anthony G. Petrello, Chairman, President and Chief Executive Officer and William Restrepo, Chief Financial Officer.*
101.INS |  | XBRL Instance Document*
101.SCH |  | XBRL Schema Document*
101.CAL |  | XBRL Calculation Linkbase Document*
101.LAB |  | XBRL Label Linkbase Document*
101.PRE |  | XBRL Presentation Linkbase Document*
101.DEF |  | XBRL Definition Linkbase Document*

*Filed herewith.

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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.

| NABORS INDUSTRIES LTD.
| By: | /s/ ANTHONY G. PETRELLO
|  | Anthony G. Petrello
|  | Chairman, President and
|  | Chief Executive Officer
|  | (Principal Executive Officer)
| By: | /s/ WILLIAM RESTREPO
|  | William Restrepo
|  | Chief Financial Officer (Principal Financial Officer and Accounting Officer)
| Date: | May 1, 2019

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