X0306 4 2018-05-24 0 0001681714 WildHorse Resource Development Corp WRD 0001610255 Habachy Steve Saad 9805 KATY FREEWAY, SUITE 400 HOUSTON TX 77024 0 1 0 0 See Remarks Common Stock 2018-05-24 4 F 0 13258 27.07 D 301481 D Common Stock 2018-05-24 4 A 0 73883 0.00 A 375364 D Common Stock 2018-05-24 4 S 0 20000 27.30 D 355364 D The reporting person delivered 13,258 shares of common stock to satisfy tax withholding liabilities incident to the vesting of restricted shares issued in accordance with Rule 16b-3. Represents an award of unvested shares of restricted stock granted under the WildHorse Resource Development Corporation 2016 Long Term Incentive Plan, which generally vest in three substantially equal installments on the first three anniversaries of the grant date, subject to continued service through each vesting date. This transaction was executed in multiple trades at prices ranging from $27.01 to $27.46. The price reported above reflects the weighted average sales price rounded to the nearest cent. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares of common stock and prices at which the transactions were effected. Executive Vice President and Chief Operating Officer /s/ Kyle N. Roane, Attorney-in-Fact 2018-05-25