Exhibit 99.1

News Release

RSP Permian, Inc. Announces First Quarter 2017 Financial and Operating Results

Dallas, Texas - May 2, 2017 - RSP Permian, Inc. (“RSP” or the “Company”) (NYSE: RSPP) today reported financial and operating results for the quarter ended March 31, 2017. In addition, the Company filed its Quarterly Report on Form 10-Q with the Securities and Exchange Commission (the “SEC”) and posted a presentation that supplements the information in this release to its website at www.rsppermian.com.

First Quarter 2017 Highlights

Recent Well Results

Steve Gray, Chief Executive Officer, commented, “I’m pleased to report solid quarterly results, particularly given we only recently closed SHEP II and assumed full operational control over our Delaware Basin assets. The second

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quarter will include the full contribution of these assets to our operating and financial results. Our operations team has made significant progress enhancing efficiency and coordinating infrastructure additions on the Delaware assets to accommodate higher activity levels during the second half of this year. We have accelerated the build-out of infrastructure projects in the second quarter on these properties and we anticipate adding a third horizontal rig in the Delaware Basin in May, bringing our total operated rig count to seven.”

Mr. Gray continued, “We recently placed our first RSP-drilled and completed Delaware Basin horizontal well on production, which achieved a strong initial rate. This well, along with recent non-operated and offset wells, highlight the robust potential of our Delaware properties. We also reported an excellent result from the furthest west Wolfcamp A well drilled on our Midland Basin properties to date, in an area where we did not previously hold Wolfcamp wells in our drilling inventory. Although recent market attention has been focused on our newly acquired Delaware assets, the strong and consistent well results from our Midland Basin portfolio continue to generate attractive rates of return and capital efficient growth at current commodity prices.”

Operational Results

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Production volumes for the quarter ended March 31, 2017 averaged 45,189 Boe/d, or a total of 4,067 MBoe, an increase of 84% over prior year’s first quarter of 24,615 Boe/d. Production for the first quarter of 2017 was comprised of 75% crude oil, 12% natural gas and 13% NGLs. RSP’s average realized oil price for the first quarter of 2017, before the effects of hedges, was $50.01 per barrel, a negative $1.90 differential compared to average NYMEX WTI pricing of $51.91 per barrel for the same period, or 96% of NYMEX WTI pricing. RSP’s average realized natural gas price for the first quarter of 2017, before the effects of hedges, was $2.52 per Mcf, a negative $0.80 differential compared to average NYMEX Henry Hub pricing of $3.32 per MMBtu for the same period, or 76% of NYMEX Henry Hub pricing. RSP’s average realized NGL price for the first quarter of 2017, before the effects of hedges, was $19.96 per Bbl, or 38% of NYMEX WTI pricing for the same time period. RSP’s average realized commodity price per barrel of oil equivalent for the first quarter of 2017, before the effects of hedges, was $41.78. Per unit cash operating expenses excluding interest expense but including lease operating expense, gathering and transportation expense, production and ad valorem taxes and recurring cash general and administrative expenses were $10.49 per Boe.

Operational Update

The Company operated four horizontal rigs in the Midland Basin during the majority of the first quarter of 2017, adding a fourth rig in January. In the Delaware Basin, the Company added a second horizontal rig upon closing the SHEP II acquisition on March 1, 2017. RSP utilized one full-time completion crew during the first quarter in the Midland Basin and a part-time crew in the Delaware Basin. RSP drilled 21 operated horizontal wells and completed 14 operated horizontal wells (Midland: two Lower Spraberry, five Wolfcamp A, five Wolfcamp B; Delaware: one Wolfcamp A, one Wolfcamp XY). The Company began the quarter with 11 operated horizontal drilled but uncompleted wells (“DUCs”) and exited the quarter with a total of 18 operated horizontal DUCs.

Financial Results

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For the quarter ended March 31, 2017, total revenues, excluding the revenue impact from realized derivative instruments, were $169.9 million, a 204% increase over the prior year quarter of $55.8 million. Adjusted total revenues, including the net cash from derivative instruments, were $167.1 million, a 189% increase from the prior year quarter of $57.8 million. Net income for the first quarter of 2017 was $38.9 million, or $0.26 per diluted share, while net loss for the prior year quarter was $17.4 million, or negative $0.17 per diluted share. Adjusted net income for the first quarter of 2017 was $24.2 million, or $0.16 per diluted share, compared to an Adjusted net loss for the prior year quarter of $16.2 million or negative $0.16 per diluted share. Adjusted EBITDAX was $124.5 million, a 249% increase from the prior year quarter of $35.6 million.

Capital Expenditures

RSP’s development capital expenditures, which includes our investment in drilling and completing wells, infrastructure, capitalized workovers, and other, but excludes the cost of acquisitions, for the quarter ended March 31, 2017 totaled $115.6 million ($110.5 million of drilling and completion and $5.1 million of infrastructure and other). Of the development capital, approximately $11.6 million, or 10%, was spent on non-operated properties.

Additionally, during the first quarter of 2017 the Company acquired $16.5 million of oil and gas properties, exclusive of the SHEP II acquisition, along with $18.8 million of water infrastructure assets which service the Delaware Basin properties.

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Liquidity

As of March 31 2017, the Company had $54.3 million of cash and no borrowings outstanding on its revolving credit facility, which has a $1.1 billion borrowing base and a $900 million Company-elected commitment.

Hedging

The summary below includes all hedges in place for the remainder of 2017 and for 2018, as of May 2, 2017.

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2017 Annual Guidance

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First Quarter 2017 Earnings Release and Conference Call

RSP will host a conference call for investors at 1:00 PM Central Time on Wednesday, May 3, 2017, to discuss first quarter 2017 results. Hosting the call will be Steve Gray, Chief Executive Officer, Scott McNeill, Chief Financial Officer and other members of RSP’s management team.

The call may be accessed live over the telephone by dialing (877) 705-6003, or for international callers, (201) 493-6725. A replay will be available shortly after the call and can be accessed by dialing (844) 512-2921, or for international callers (412) 317-6671. The passcode for the replay is 13659950. The replay will be available until May 17, 2017. Interested parties may also listen to a simultaneous webcast of the conference call by logging onto RSP’s website at www.rsppermian.com in the Investor Relations section. A replay of the webcast will also be available following the call.

About RSP Permian, Inc.

RSP is an independent oil and natural gas company focused on the acquisition, exploration, development and production of unconventional oil and associated liquids-rich natural gas reserves in the Permian Basin of West Texas. The vast majority of our acreage is located on large, contiguous acreage blocks in the core of the Midland and Delaware Basins, sub-basins of the Permian Basin. The Company’s common stock is traded on the NYSE under the ticker symbol “RSPP.” For more information, visit www.rsppermian.com.

Forward-Looking Statements

This news release contains forward-looking statements within the meaning of the federal securities laws.    All statements, other than historical facts, that address activities that RSP assumes, plans, expects, believes, intends or anticipates (and other similar expressions) will, should or may occur in the future are forward-looking statements. Forward-looking statements are based on management’s current beliefs, based on currently available information, as to the outcome and timing of future events. These forward-looking statements involve certain risks and uncertainties that could cause the results to differ materially from those expected by the management of RSP. Information concerning these risks and other factors can be found in RSP’s filings with the SEC, including its Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q, which can be obtained free of charge on the SEC’s web site located at http://www.sec.gov. RSP undertakes no obligation to update or revise any forward-looking statement.

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Statements of Operations

(In thousands, except per share data)

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Summary Balance Sheet

(In thousands)

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Use of Non-GAAP Financial Measures

We define Adjusted EBITDAX as oil and gas revenues including net cash receipts (payments) on settled derivative instruments and premiums paid on put options that settled during the period, less lease operating expenses, production and ad valorem taxes, and general and administrative expenses excluding stock based compensation. Adjusted Net Income deducts from Adjusted EBITDAX depreciation, depletion, and amortization, accretion on asset retirement obligations, exploration expenses, interest expense, stock-based compensation, acquisition costs and adjusted income tax expense.

Management believes Adjusted EBITDAX and Adjusted Net Income are useful because they allow us to more effectively evaluate our operating performance and compare the results of our operations from period to period without regard to our financing methods or capital structure. We exclude the items listed above in arriving at Adjusted EBITDAX and Adjusted Net Income because these amounts can vary substantially from company to company within our industry depending upon accounting methods and book values of assets, capital structures and the method by which the assets were acquired. Adjusted EBITDAX and Adjusted Net Income should not be considered as an alternative to, or more meaningful than, net income as determined in accordance with GAAP or as an indicator of our operating performance or liquidity. Certain items excluded from Adjusted EBITDAX and Adjusted Net Income are significant components in understanding and assessing a company’s financial performance, such as a company’s cost of capital and tax structure, as well as the historic costs of depreciable assets, none of which are components of Adjusted EBITDAX. Our computations of Adjusted EBITDAX and Adjusted Net Income may not be comparable to other similarly titled measures of other companies.

The following tables include a reconciliation of the non-GAAP financial measures of Adjusted EBITDAX and Adjusted Net Income to the GAAP financial measure of net income.

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Reconciliation of Net Income (Loss) to Adjusted EBITDAX

(In thousands)

Reconciliation of Net Income (Loss) to Adjusted Net Income (Loss)

(In thousands)

Investor Contact:

Scott McNeill

Chief Financial Officer

214-252-2700

Alyssa Stephens

Director, Investor Relations

214-252-2764

Investor Relations:

IR@rsppermian.com

214-252-2790

Source: RSP Permian, Inc.

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