Exhibit 99.1

Roan Resources, Inc. Reports Third Quarter 2018 Results

OKLAHOMA CITY, November 12, 2018 – Roan Resources, Inc. (NYSE: ROAN) (“Roan” or the “Company”) today announced third quarter 2018 operating and financial results.

Third Quarter 2018 Highlights

“Third quarter 2018 was a very successful quarter for Roan,” said Tony Maranto, Roan’s Chairman and Chief Executive Officer. “We completed the last steps to becoming a standalone public Company, finalizing the reorganization process from our two predecessor companies and increasing headcount to 170 full-time employees. Additionally, operational performance from our Merge asset was impressive with 30% production growth over second quarter 2018 and over 100% production growth over third quarter 2017. This growth was achieved while maintaining our strong balance sheet with LQA leverage ratio of 1.3x and debt to capital ratio of 16%. I am tremendously proud of our team’s accomplishments.”

Operational Update

Roan’s third quarter 2018 average daily production was approximately 46.5 thousand barrels of oil equivalent per day (MBoe/d) (25% oil, 56% total liquids), up 30% over second quarter 2018 with liquids production up approximately 35% over second quarter 2018. September production was approximately 48.2 MBoe/d (26% oil, 55% total liquids).

The Company drilled 27 gross (19.2 net) operated wells during the third quarter, bringing the total drilled wells for the year to 66 gross (49.0 net) operated wells. The Company also brought online 26 gross (19.0 net) operated wells during the quarter, bringing the year-to-date (YTD) total of wells turned online to 58 gross (44.5 net) operated wells.

For wells turned online in the third quarter of 2018, the oil percentage for wells with 90 days of production increased to an average of 43%, compared to a 28% oil percentage for wells turned online in the second quarter of 2018.

Of the 58 gross wells turned online through third quarter of 2018, 29 wells targeted the Mayes formation and 29 wells targeted the Woodford formation. 40 of the 58 gross wells developed by Roan and its predecessors turned online in 2018 have had at least 90 days of production with an average 90-day peak production rate of 1,428 Boe/d (32% oil, 65% total liquids) normalized to a 10,000-foot lateral, with an average lateral length of 7,500-feet.

Included in the 58 gross wells are 23 gross operated wells that were selected, drilled and completed by Roan with at least 90 days of production. The average 90-day peak production rate for these 23 wells is 1,560 Boe/d (35% oil, 67% total liquids) normalized to a 10,000-foot lateral, with an average lateral length of 7,685-feet. These 23 wells are outperforming over 230 industry wells in the Merge on average by 27%, based on cumulative production at 90 days, which equates to approximately $1 million in additional gross revenue per well based on $60 WTI.

“The average outperformance Roan operated wells are seeing at 90 days is a direct correlation to our emphasis on targeting,” said Mr. Maranto. “We expect this trend to continue as more wells fully operated by Roan reach 90 days of production and the distribution of our operated well results continues to narrow and improve from historical averages.”

Drill times continue to trend lower as the Company has made numerous performance-driven adjustments since taking over the majority of drilling operations in January of 2018. Average drill times for two-mile Mayes wells during the third quarter were drilled in 13.8 days, an improvement of almost 50% compared to wells drilled in 2017. Average drill times for two-mile Woodford wells during the third quarter were drilled in 19.2 days, an improvement of over 35% compared to wells drilled in 2017.

Financial Update

Third quarter 2018 net loss was $301.2 million, or $1.97 per share, and third quarter 2018 adjusted net income (non-GAAP) was $32.2 million, or $0.21 per share. The third quarter net loss included the impact of income tax expense of $299.7 million attributable to the reorganization. Third quarter 2018 Adjusted EBITDAX (non-GAAP) was $75.4 million.

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See the definitions and reconciliations of adjusted net income, adjusted net income per share, Adjusted EBITDAX and cash general and administrative (G&A) expense presented within this release to the most directly comparable U.S. generally accepted accounting principles (GAAP) financial measures are provided in the supporting tables or definitions at the conclusion of this press release.

Third quarter 2018 average realized prices were $68.86 per barrel of oil (Bo), $21.08 per barrel of natural gas liquids (NGLs) and $1.58 per Mcf of natural gas, resulting in a total equivalent unhedged price of $28.09 per Boe or a total equivalent hedged price of $24.83 per Boe.

The Company’s cash operating costs for the third quarter were $7.28 per Boe, including lease operating expense (LOE) of $3.44 per Boe, production tax of $1.45 per Boe and cash G&A expense (non-GAAP) of $2.39 per Boe. LOE per Boe was higher in the third quarter due to increased maintenance and surface repairs incurred on previously shut in wells once Blue Mountain’s Cryogenic plant came online. The Company expects LOE per Boe to be lower in the fourth quarter of 2018 and in 2019. Production tax also increased in the quarter due to new legislation on gross production tax in Oklahoma taking effect in July of 2018.

Non-acquisition capital expenditures for third quarter 2018 totaled approximately $244.2 million, including $226.5 million for drilling and completions and $17.7 million for other capital expenditures. Capital expenditures for the quarter were higher due to increased activity with adding an eighth rig and ramp in completion activity, as well as costs attributable to wells drilled and completed by Roan’s predecessors.

As of September 30, 2018, Roan had $3.9 million of cash on the balance sheet and $394.6 million drawn on its revolving credit facility. Roan currently has no other outstanding debt. The Company’s third quarter annualized leverage ratio remained low at 1.3x. The Company also reported strong return metrics for the quarter with ROCE at 9.8% and ROE at 10.8%.

During the third quarter of 2018, Roan entered into additional oil and natural gas derivative contracts. A table of the Company’s derivative contracts as of November 9, 2018 is provided at the conclusion of this press release.

The Company completed its fall 2018 borrowing base redetermination process for its credit facility in late September. All participating lenders consented to a borrowing base increase to $675 million, from $425 million.

2018 Guidance

The Company is projecting fourth quarter 2018 production to range between 52 and 56 MBoe/d, with total liquids at approximately 57% and the fourth quarter exit rate between 58 and 62 MBoe/d. Full-year 2018 production is expected to be between 43 and 44 MBoe/d, in-line with previous guidance.

Fourth quarter 2018 operating expenses are projected to be lower than the third quarter results. LOE is expected to be between $2.60 and $2.90 per Boe and cash G&A (non-GAAP) is expected to be between $2.10 and $2.40 per Boe.

Fourth quarter capital expenditures are expected to be between $200 million and $225 million. Therefore, total capital expenditures for 2018 are now expected to be between $760 million and $785 million, which includes $110 million to $115 million in other capital expenditures. This is an increase to previously provided guidance due to costs attributable to wells drilled and completed from the predecessor companies, adding an eighth rig earlier than originally planned and higher completion costs as the Company tests different completion designs.

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The Company plans to provide formal 2019 guidance with or before year-end 2018 results early next year.

Third Quarter Earnings Conference Call

Roan will host a conference call to discuss third quarter 2018 results on Tuesday, November 13, 2018 at 11:00 a.m. ET (10:00 a.m. CT). Interested parties may listen to the conference call via webcast on the Company’s website at www.RoanResources.com under the “Investor Relations” section of the site or by phone:

Dial-in: 866-393-4306

International dial-in: 734-385-2616

Conference ID: 6791447

A replay of the webcast will be available on the Company’s website and a replay of the call will be available for two weeks by phone:

Replay dial-in: 855-859-2056 or 404-537-3406

International replay dial-in: 800-585-8367

Conference ID: 6791447

Upcoming Confirmed Conference Participation

Members of the Roan Management team plan to attend the following investor conferences:

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About Roan Resources

Roan is an independent oil and natural gas company headquartered in Oklahoma City, OK focused on the development, exploration and acquisition of unconventional oil and natural gas reserves in the Merge, SCOOP and STACK plays of the Anadarko Basin in Oklahoma. For more information, please visit www.RoanResources.com, where we routinely post announcements, updates, events, investor information, presentations and recent news releases.

Cautionary Statements     

This press release includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements, other than statements of historical fact, are forward-looking statements which contain our current expectations about future results. These forward-looking statements are based on certain assumptions and expectations made by the Company, which reflect management’s experience, estimates and perception of historical trends, current conditions and anticipated future developments. Such statements are subject to a number of assumptions, risks and uncertainties, many of which are beyond the control of the Company, which may cause actual results to differ materially from those implied or anticipated in the forward-looking statements. When considering these forward-looking statements, you should keep in mind the risk factors and other cautionary statements found in the Company’s filings with the Securities and Exchange Commission, including its Current Report on Form 8-K, filed September 24, 2018 and any subsequently filed quarterly reports on Form 10-Q or current reports on Form 8-K.

We caution you that these forward-looking statements are subject to all of the risks and uncertainties, most of which are difficult to predict and many of which are beyond our control, or incidental to the development, production, gathering and sale of oil, natural gas and NGLs. These risks include, but are not limited to, commodity price volatility, inflation, lack of availability of drilling and production equipment and services, environmental risks, drilling and other operating risks, regulatory changes, the uncertainty inherent in estimating reserves and in projecting future rates of production, cash flow and access to capital, the timing of development expenditures and the other risks.

Reserve engineering is a process of estimating underground accumulations of oil, natural gas and NGLs that cannot be measured in an exact way. The accuracy of any reserve estimate depends on the quality of available data, the interpretation of such data and price and cost assumptions made by reserve engineers. In addition, the results of drilling, testing and production activities may justify revisions of estimates that were made previously. If significant, such revisions would change the schedule of any further production and development drilling. Accordingly, reserve estimates may differ significantly from the quantities of oil, natural gas and NGLs that are ultimately recovered.

Should one or more of the risks or uncertainties described occur, or should underlying assumptions prove incorrect, our actual results and plans could differ materially from those expressed in any forward-looking statements.

All forward-looking statements, expressed or implied, included in this release are expressly qualified in their entirety by this cautionary statement. This cautionary statement should also be considered in connection with any subsequent written or oral forward-looking statements that we or persons acting on our behalf may issue.

Except as otherwise required by applicable law, we disclaim any duty to update any forward-looking statements, all of which are expressly qualified by the statements in this section, to reflect events or circumstances after the date of this release.

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Financial Statements

The information in the following financial statements and tables reflect the results of Roan Resources LLC and after the Reorganization, the results of Roan Inc. For periods prior to August 31, 2017, the date oil and natural gas properties were contributed to us by Citizen Energy II, LLC and subsidiaries of Linn Energy, Inc., the following financial information reflects the results of Citizen, our accounting predecessor.

Roan Resources, Inc.

Unaudited Condensed Consolidated Statements of Operations

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Roan Resources, Inc.

Unaudited Condensed Consolidated Balance Sheets

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Roan Resources, Inc.

Unaudited Condensed Consolidated Statements of Cash Flows

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The following table represent the Company’s open commodity contracts at November 9, 2018:

Revenue from Contracts with Customers

The Company adopted ASC 606 on January 1, 2018 using a modified retrospective approach, which only applies to contracts that were not completed as of the date of initial application. The adoption did not require an adjustment to opening retained earnings for the cumulative effect adjustment. The adoption does not have a material impact on the timing of the Company’s revenue recognition or its financial position, results of operations, net income, or cash flows, but does impact the Company’s presentation of revenues and expenses under the gross-versus-net presentation guidance in ASU 2016-08.

The following table shows the impact of the adoption of ASC 606 on the Company’s current period results as compared to the previous revenue recognition standard, ASC Topic 605, Revenue recognition (ASC 605):

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Results of Operations

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Operating Expenses

Our operating expenses reflect costs incurred in the development, production and sale of oil, natural gas and NGLs. The following table provides information on our operating expenses:

Non-GAAP Financial Measures

Adjusted Net Income and Adjusted Net Income per Share

Adjusted net income and adjusted net income per share are non-GAAP performance measures. The Company defines adjusted net income and adjusted net income per share as net (loss) income and net (loss) income per share excluding non-cash gains or losses on derivatives, gains on early terminations of derivative contracts, gain on the sale of property, certain exploration expenses and the income tax expense associated with our deferred tax liability as a result of the Reorganization. Management uses adjusted net income and adjusted net income per share as an indicator of the Company’s operational trends and performance relative to other oil and natural gas companies. Adjusted net income and adjusted net income per share should not be considered an alternative to net income (loss), operating income, or any other measure of financial performance presented in accordance with GAAP or as an indicator of our operating performance.

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Reconciliation of Net (Loss) Income to Adjusted Net Income and Adjusted Net Income per Share

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Adjusted EBITDAX

Adjusted EBITDAX is a non-GAAP financial measure. We define Adjusted EBITDAX as net income (loss) adjusted for interest expense, income tax expense, depreciation, depletion, amortization and accretion, exploration expense, non-cash equity-based compensation expense, gain (loss) on early termination of derivative contracts, and cash (paid) received upon settlement of derivative contracts. Adjusted EBITDAX is not a measure of net income (loss) as determined by GAAP. Our accounting predecessor, Roan LLC, passed through its taxable income to its owners for income tax purposes and thus, we have not incurred historical income tax expenses.

We believe Adjusted EBITDAX is useful because it allows our management to more effectively evaluate the operating performance and compare the results of our operations from period to period without regard to our financing methods or capital structure. We add the items listed above to net income (loss) in arriving at Adjusted EBITDAX 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 should not be considered as an alternative to, or more meaningful than, net income (loss) as determined in accordance with GAAP or as an indicator of our operating performance or liquidity. Certain items excluded from Adjusted EBITDAX 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.

Roan’s computations of Adjusted EBITDAX may not be comparable to other similarly titled measures of other companies or to such measure in our credit facility or any of our other contracts.

The following tables present a reconciliation of Adjusted EBITDAX to net (loss) income, our most directly comparable financial measures calculated and presented in accordance with GAAP for each of the periods indicated.

Reconciliation of Net (Loss) Income to Adjusted EBITDAX

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Cash general and administrative expenses per Boe

Cash G&A expense is a non-GAAP measure, which is defined as total general and administrative expense as determined in accordance with GAAP less equity-based compensation expense. Cash G&A expense should not be considered as an alternative to, or more meaningful than, total general and administrative expense as determined in accordance with GAAP and may not be comparable to other companies’ similarly titled measures.

The following table provides the YTD calculation of ROE and ROCE:

Investor Contact:

Alyson Gilbert

Investor Relations Manager

405-896-3767

IR@RoanResources.com

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