Exhibit 99.1

WildHorse Resource Development Corporation Announces First Quarter 2017 Results

HOUSTON, May 11, 2017 – WildHorse Resource Development Corporation (NYSE: WRD) announced today its operating and financial results for the three months ended March 31, 2017. First quarter 2017 highlights include:

Other recent highlights include:

1

“While early 2017 has been very exciting for WildHorse with a sizeable acquisition announced, we are just getting started as our production ramps over the next few months. In the second quarter of 2017, we expect to bring online 16 to 20 wells that will increase our total of Gen 3 completions to approximately 40 wells. Some of those wells will be immediately adjacent to our acquisition acreage,” said Jay Graham, Chairman and Chief Executive Officer of WRD. “Since the beginning of the year, we have brought online some incredible wells such as the Paul, Altimore, and Jackson. In 2017, as we expect to bring online a total of approximately 85 to 95 Eagle Ford wells and 9 wells in North Louisiana, we look forward to building on these results and demonstrating the consistency of our acreage,” added Jay Graham.

First Quarter 2017 Results

Net production increased 18% year-over-year to 17.6 MBoe/d for the first quarter 2017 compared to 14.9 MBoe/d for the first quarter 2016. First quarter 2017 net production consisted of 49% oil, 41% natural gas, and 10% natural gas liquids (“NGLs”) in comparison to 33% oil, 59% natural gas, and 8% NGLs in first quarter 2016. Production was up slightly over pro-forma⁽³⁾ fourth quarter 2016 production of 17.5 MBoe/d.

WRD reported Net Income of $20.3 million for the first quarter 2017 compared to a Net Loss of $14.2 million for the first quarter 2016. WRD reported Adjusted Net Income⁽¹⁾ for the first quarter 2017 of $0.1 million compared to a Net Loss of $13.7 million for the first quarter 2016. WRD also reported Adjusted EBITDAX⁽¹⁾ for the first quarter 2017 of $34.6 million compared to $17.7 million for the first quarter 2016.

As previously announced, the first quarter of 2017 was impacted by a slower drilling pace from newly added rigs which were previously cold-stacked. As a result of the delays, certain wells such as the Altimore and Jackson were brought online in the last few days of the first quarter 2017. Since the initial wells, the rigs are averaging drilling times of approximately 14 days from spud to rig release.

2

Total revenues for the first quarter 2017 were $54.3 million compared to $25.1 million for the first quarter 2016. Revenues were higher primarily due to greater production as a result of the Burleson North acquisition, higher commodity prices, and a higher percentage of liquids in WRD’s commodity mix. The average realized sales price increased $16.03 per Boe or 89% largely due to higher commodity prices. The volume variances were responsible for an approximate $8.4 million increase in revenue, and pricing variances were responsible for an approximate $21.1 million increase in revenue. Total revenues do not include the impact of realized hedges.

Average realized prices for the quarter ended March 31, 2017 and 2016, before the effect of commodity derivatives, are presented below:

Average realized prices for the quarter ended March 31, 2017 and 2016, after the effect of commodity derivatives, are presented below:

Lease operating expense (“LOE”) for the first quarter 2017 was $6.9 million, or $4.37 per Boe, compared to $2.8 million, or $2.03 per Boe, for the first quarter 2016. The increase in LOE on a per unit basis is largely attributable to the Burleson North acquisition which came with less efficient legacy production. However, as a result of significant efficiency improvements, LOE has decreased from fourth quarter 2016 at $4.93 per Boe, pro-forma⁽³⁾ for the Burleson North acquisition. WRD secured lower compression costs and chemical costs and reduced overhead expenses which contributed to a decline in lease operating expense over last quarter on a pro-forma basis. Including the recently announced acquisition, WRD expects updated LOE to range from $3.25 to $3.75 per Boe for the full year 2017.

3

Gathering, processing and transportation (“GP&T”) expense for the first quarter 2017 was $1.7 million, or $1.07 per Boe, versus $1.9 million, or $1.39 per Boe, in the first quarter 2016. The decrease in GP&T expenses is primarily attributable to lower fee gas purchasing and processing contracts associated with the Burleson North properties.

Taxes other than income were $3.9 million for the first quarter 2017, or $2.46 per Boe, compared to $1.5 million, or $1.08 per Boe for the first quarter 2016. Pro-forma⁽³⁾ fourth quarter 2016 taxes other than income were $2.6 million or $1.59 per Boe. First quarter 2017 taxes other than income increased compared to first quarter 2016 as a result of higher price realizations, higher ad valorem taxes, and Louisiana franchise taxes incurred as a result of WRD’s corporate reorganization at the IPO.

General and administrative (“G&A”) expense for the first quarter 2017 was $7.5 million, or $4.72 per Boe, compared to $4.4 million, or $3.28 per Boe, for the first quarter 2016. During the first quarter 2017, recurring cash G&A was $6.2 million or $3.91 per Boe, and non-cash, stock-based compensation and transaction related costs were $1.3 million, or $0.81 per Boe. G&A expense increased largely as the result of additional staff hired since the first quarter of 2016 and increased costs associated with being a public company. WRD expects updated cash G&A to range from $2.50 to $3.00 per Boe for the full year 2017.

Net interest expense during the first quarter 2017 was $5.6 million, including amortization of deferred financing fees of approximately $0.8 million. This compares to net interest expense during the first quarter 2016 of $2.0 million, including amortization of deferred financing fees of approximately $0.1 million. The increase in net interest expense is primarily due to the issuance of senior notes in first quarter 2017.

Drilling and completion (“D&C”) capital expenditures, including facilities and capital workovers, were approximately $87.2 million in the first quarter 2017, which represents 14% of WRD’s expected full-year 2017 D&C capital expenditures assuming the mid-point of the updated full year 2017 guidance. Of the total D&C capital expenditure, $80.9 million was allocated to the Eagle Ford.

4

Operational Update

During the first quarter 2017, WRD brought online a total of 7 gross (7 net) Eagle Ford wells with four of the wells coming online in March. These wells include WRD’s first Burleson North well brought online in early March. In late March and early April 2017, WRD drilled an additional 6 wells within the vicinity of the first Burleson North well and expects additional wells in the 2017 program in this area.

In addition, WRD brought online its first Eagle Ford refrac test in March and completed a second refrac in mid-April with encouraging results. WRD also expects to bring online an Austin Chalk well in the second quarter of 2017.

At the end of first quarter 2017, WRD had a total of 23 Gen 3 wells online on average tracking a 101 Boe per foot EUR above the current 91 Boe per foot type curve. In the second quarter of 2017, WRD expects to bring online a total of 16 to 20 wells.

WRD continues to see improvements in its drilling rigs coming out of cold-stack. The first three rigs are drilling wells at 14 days from spud to rig release with one of those rigs averaging between 13 and 14 days. WRD’s fifth rig recently finished drilling an Austin Chalk well 3 days ahead of schedule and has since moved on to drilling Eagle Ford wells. Note that Austin Chalk wells have longer drilling times than the Eagle Ford. During the first quarter 2017, WRD also drilled two wells in North Louisiana in 50 days meeting our target drilling estimate. This 2-well pad has been completed and began flowing back in early May with results expected later in the year.

Financial Update

In the first quarter 2017, WRD issued $350 million in aggregate principal amount of 6.875% senior unsecured notes due 2025. Total debt outstanding as of March 31, 2017 was $350 million, comprised solely of the senior notes due 2025. As of March 31, 2017, WRD’s liquidity was $455.8 million consisting of $93.3 million of cash and cash equivalents and an undrawn revolving credit facility availability of $362.5 million. WRD’s net debt to annualized first quarter 2017 Adjusted EBITDAX ratio was 1.9 times at quarter-end 2017.

5

In April 2017, WRD’s 15 lender bank group increased its borrowing base under WRD’s revolving credit facility to $450 million from $362.5 million following its fiscal year-end reserves review and regularly scheduled semi-annual redetermination. Based on early indications from its bank group, WRD expects an increase to its borrowing base by approximately $200 million in conjunction with the closing of the recently announced acquisition. After giving effect to the borrowing base increase to $450 million, the additional expected borrowing base increase of $200 million in connection with the announced acquisition, and the funding of the announced acquisition with $121 million under the revolving credit facility, liquidity would be approximately $622 million.

WRD continues to target a net debt to annualized Adjusted EBITDAX ratio of 2.0x times based on the mid-point of guidance. WRD expects the available borrowings under its revolving credit facility to provide sufficient liquidity to finance anticipated working capital and capital expenditure requirements.

Updated Full-Year 2017 Guidance

The following updated guidance included in this press release is subject to the cautionary statements and limitations described under the “Cautionary Statements and Additional Disclosures” caption at the end of this press release. WRD’s 2017 guidance is based on, among other things, its current expectations as of May 11, 2017 regarding capital expenditure levels and the assumption that market demand and prices for oil, natural gas and NGLs will continue at a level that allows for economic production of these products.

Full year 2017 production guidance increased by approximately 4.0 MBoe/d to 27.0 – 31.0 MBoe/d comprised of 1.0 MBoe/d as a result of well performance and 3.0 MBoe/d as a result of the acquisition expected to close on June 30, 2017. Pre-acquisition production guidance increased by 4% due to well performance.

WRD’s updated 2017 capex guidance has been increased to $550 – $675 million. The drilling program has also increased by 10 gross wells to between 100 – 120 gross spuds in 2017. In addition, the number of gross wells brought online has increased by 5 wells to between 85 and 105 gross wells in 2017. A summary of updated full year 2017 guidance is presented below:

6

Note: Guidance as of May 11, 2017. Updated guidance reflects estimated production and expenses after the announced acquisition closing date.

Hedging Update

WRD utilizes its hedging program to mitigate financial risks and the effects of commodity price volatility. Total hedged production in the first quarter of 2017 was 1,370 MBoe, or 86% of first quarter production of 1,584 MBoe. As of May 11, 2017, WRD has hedged approximately 62% of its expected production for the last 9 months of 2017 (using WRD’s 2017 updated guidance range). The following table reflects WRD’s hedged volumes and corresponding weighted-average price, as of May 11, 2017.

7

Quarterly Report on Form 10-Q

WRD’s financial statements and related footnotes will be available in its Quarterly Report on Form 10-Q for the quarter ended March 31, 2017, which will be filed with the U.S. Securities and Exchange Commission (“SEC”) on or before May 15, 2017.

Conference Call and Webcast

WRD will host an investor conference call this morning, May 11, 2017 at 8 a.m. Central (9 a.m. Eastern) to discuss these operating and financial results. Interested parties are invited to participate on the call by dialing (877) 883-0383 (Conference ID: 1960634), or (412) 902-6506 for international calls, (Conference ID: 1960634) at least 15 minutes prior to the start of the call or via the internet at www.wildhorserd.com. A replay of the call will be available on WRD’s website or by phone at (877) 344-7529 (Conference ID: 10105576) for a seven-day period following the call.

8

About WildHorse Resource Development Corporation

WildHorse Resource Development Corporation is an independent oil and natural gas company focused on the acquisition, exploration, development and production of oil, natural gas and NGL properties primarily in the Eagle Ford Shale in East Texas and the Over-Pressured Cotton Valley in North Louisiana. For more information, please visit our website at www.wildhorserd.com

Cautionary Statements and Additional Disclosures

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. Forward-looking statements can be identified by words such as “anticipates,” “intends,” “will,” “plans,” “seeks,” “believes,” “estimates,” “could,” “expects” and similar references to future periods. Such forward-looking statements are subject to a number of risks and uncertainties, many of which are beyond WRD’s control. All statements, other than historical facts included in this press release, that address activities, events or developments that WRD expects or anticipates will or may occur in the future, including such things as WRD’s future capital expenditures (including the amount and nature thereof), business strategy and measures to implement strategy, future drilling locations and inventory, competitive strengths, goals, expansion and growth of WRD’s business and operations, plans, successful consummation and integration of acquisitions and other transactions, market conditions, references to future success, references to intentions as to future matters and other such matters are forward-looking statements. All forward-looking statements speak only as of the date of this press release. Although WRD believes that the plans, intentions and expectations reflected in or suggested by the forward-looking statements are reasonable, there is no assurance that these plans, intentions or expectations will be achieved. Therefore, actual outcomes and results could materially differ from what is expressed, implied or forecast in such statements.

WRD cautions you that these forward-looking statements are subject to risks and uncertainties, most of which are difficult to predict and many of which are beyond WRD’s control, incident to the exploration for and development, production, gathering and sale of natural gas and oil. 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

9

operating risks; regulatory changes; the uncertainty inherent in estimating natural gas and oil reserves and in projecting future rates of production, cash flow and access to capital; and the timing of development expenditures. Information concerning these and other factors can be found in WRD’s filings with the SEC, including its Forms 10-K, 10-Q and 8-K. Consequently, all of the forward-looking statements made in this press release are qualified by these cautionary statements and there can be no assurances that the actual results or developments anticipated by WRD will be realized, or even if realized, that they will have the expected consequences to or effects on WRD, its business or operations. WRD has no intention, and disclaims any obligation, to update or revise any forward-looking statements, whether as a result of new information, future results or otherwise.

Initial production rates are subject to decline over time and should not be regarded as reflective of sustained production levels.

Some of the above results are preliminary. Such preliminary results are based on the most current information available to management. As a result, our final results may vary from these preliminary estimates. Such variances may be material; accordingly, you should not place undue reliance on these preliminary estimates.

Cash General and Administrative Expenses per Boe

Our presentation of cash general and administrative (“G&A”) expenses per Boe is a non-GAAP measure. We define cash G&A per Boe as total G&A determined in accordance with U.S. GAAP less non-cash equity compensation expenses, expressed on a per-Boe basis. We report and provide guidance on cash G&A per Boe because we believe this measure is commonly used by management, analysts and investors as an indicator of cost management and operating efficiency on a comparable basis from period to period. In addition, management believes cash G&A per Boe is used by analysts and others in valuation, comparison and investment recommendations of companies in the oil and gas industry to allow for analysis of G&A spend without regard to stock-based compensation programs which can vary substantially from company to company. Cash G&A per Boe should not be considered as an alternative to, or more meaningful than, total G&A per Boe as determined in accordance with U.S. GAAP and may not be comparable to other similarly titled measures of other companies.

10

Use of Non-GAAP Financial Measures

This press release and accompanying schedules include the non-GAAP financial measures of Adjusted EBITDAX, Adjusted Net Income (Loss), Net Debt, and Pro-Forma measures. The accompanying appendix and schedules provide a reconciliation of these non-GAAP financial measures to their most directly comparable financial measure calculated and presented in accordance with GAAP. WRD’s non-GAAP financial measures should not be considered as alternatives to GAAP measures such as Net Income, operating income, net cash flows provided by operating activities or any other measure of financial performance calculated and presented in accordance with GAAP. WRD’s non-GAAP financial measures may not be comparable to similarly-titled measures of other companies because they may not calculate such measures in the same manner as WRD does.

11

WildHorse Resource Development Corporation

Statements of Consolidated and Combined Operations

12

WildHorse Resource Development Corporation

Statements of Consolidated and Combined Cash Flows

WildHorse Resource Development Corporation

Operating Data

13

WildHorse Resource Development Corporation

Consolidated and Combined Balance Sheet

14

WildHorse Resource Development Corporation

Commodity Hedge Positions

At May 11, 2017, WRD had the following open commodity positions covering April of 2017 onward:

15

Calculation of Adjusted EBITDAX:

We evaluate performance based on Adjusted EBITDAX. Adjusted EBITDAX is defined as Net Income (loss), plus interest expense; debt extinguishment costs; income tax expense; depreciation, depletion and amortization; impairment of goodwill and long-lived properties; accretion of asset retirement obligations; losses on commodity derivative contracts and cash settlements received; losses on sale of properties; stock-based compensation; incentive-based compensation expenses; exploration costs; provision for environmental remediation; transaction related costs; IPO related expenses; and other non-routine items, less interest income; income tax benefit; gains on commodity derivative contracts and cash settlements paid; gains on sale of assets and other non-routine items. The following table presents WRD’s information for the periods indicated:

Adjusted EBITDAX

16

Calculation of Adjusted Net Income (Loss):

Adjusted Net Income (Loss) is a supplemental non-GAAP financial measure that is used by external users of WRD’s financial statements. We define Adjusted Net Income (Loss) as Net Income (Loss) excluding the impact of certain items including gains or losses on commodity derivative instruments not yet settled, gains or losses on sales of properties, debt extinguishment costs, stock-based compensation, incentive-unit compensation expense, and the tax effects related to these adjustments. We believe Adjusted Net Income (Loss) is useful to investors because it provides readers with a more meaningful measure of our profitability before recording certain items for which the timing or amount cannot be reasonably determined. However, this measure is provided in addition to, not as an alternative for, and should be read in conjunction with, the information contained in our financial statements prepared in accordance with GAAP. The following table provides a reconciliation of Net Income (Loss) as determined in accordance with GAAP to Adjusted Net Income (Loss) for the periods indicated:

Adjusted Net Income (Loss)

Pro-forma Fourth Quarter 2016 Results

In this press release, WRD discusses fourth quarter 2016 results pro-forma for the Burleson North acquisition which closed on December 19, 2016. Our calculations for the pro-forma fourth quarter 2016 were calculated with unaudited lease operating statements provided by CWEI during the acquisition process. As a result, the pro-forma calculations leave out expenses associated with corporate overhead items such as CWEI’s G&A expense as well as the impact of CWEI’s commodity hedges. Reported GAAP fourth quarter 2016 results are also provided in this press release.

17

WildHorse Resource Development Corporation

Pro-forma Fourth Quarter 2016 Statements of Consolidated and Combined Operations

18

Calculation of Net Debt:

Net Debt is a supplemental non-GAAP financial measure that is used by external users of WRD’s financial statements. We define Net Debt as total debt minus cash and cash equivalents. We believe Net Debt is useful to investors because it provides readers with a more meaningful measure of our outstanding indebtedness. However, this measure is provided in addition to, not as an alternative for, and should be read in conjunction with, the information contained in our financial statements prepared in accordance with GAAP.

Contact:

WildHorse Resource Development Corporation

Pearce Hammond CFA, (713) 255-7094

Vice President, Investor Relations

ir@wildhorserd.com

19