RSP Acquisition On July 19, 2018 , the Company completed the acquisition of RSP Permian, Inc. (RSP) through an all-stock transaction (the RSP Acquisition) for approximately $7.5 billion . In connection with the RSP Acquisition, the Company incurred approximately $23 million and $33 million of costs related to consulting, investment banking, advisory, legal and other acquisition-related fees during the three and nine months ended September 30, 2018, respectively, which are included in transaction costs in operating costs and expenses on the consolidated statements of operations. Purchase price allocation. The RSP Acquisition has been accounted for as a business combination, using the acquisition method. The following table represents the allocation of the total purchase price of RSP to the identifiable assets acquired and the liabilities assumed based on the fair values at the acquisition date, with any excess of the purchase price over the estimated fair value of the identifiable net assets acquired recorded as goodwill. Any value assigned to goodwill is not deductible for income tax purposes. The following table sets forth the Companys final purchase price allocation: (in millions) Total purchase price $ 7,549 Fair value of liabilities assumed: Accounts payable  trade $ 48 Accrued drilling costs 79 Current derivative instruments 10 Other current liabilities 116 Long-term debt 1,758 Deferred income taxes 515 Asset retirement obligations 20 Noncurrent derivative instruments 5 Total liabilities assumed $ 2,551 Total purchase price plus liabilities assumed $ 10,100 Fair value of assets acquired: Accounts receivable $ 194 Current derivative instruments 36 Other current assets 21 Proved oil and natural gas properties 4,055 Unproved oil and natural gas properties 3,565 Other property and equipment 5 Noncurrent derivative instruments 2 Implied goodwill 2,222 Total assets acquired $ 10,100 Pro forma data. The following unaudited pro forma combined condensed financial data for the three and nine months ended September 30, 2018 was derived from the historical financial statements of the Company giving effect to the RSP Acquisition as if it had occurred on January 1, 2017. The below information reflects pro forma adjustments for the issuance of the Companys common stock in exchange for RSPs outstanding shares of common stock, as well as pro forma adjustments based on available information and certain assumptions that the Company believes are reasonable, including (i) the Companys common stock issued to convert RSPs outstanding shares of common stock and equity awards as of the closing date of the RSP Acquisition, (ii) the depletion of RSPs fair-valued proved oil and natural gas properties and (iii) the estimated tax impacts of the pro forma adjustments. The pro forma results of operations do not include any cost savings or other synergies that may result from the RSP Acquisition. The pro forma financial data does not include the pro forma results of operations for any other acquisitions made during the period. The pro forma combined condensed financial data has been included for comparative purposes only and is not necessarily indicative of the results that might have occurred had the RSP Acquisition taken place on January 1, 2017 and is not intended to be a projection of future results. (in millions, except per share amounts) Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Operating revenues $ 1,243 $ 3,741 Net income (loss) $ (133 ) $ 1,039 Earnings per share: Basic net income (loss) $ (0.67 ) $ 5.19 Diluted net income (loss) $ (0.67 ) $ 5.19