X0306 4 2018-06-01 0 0001681714 WildHorse Resource Development Corp WRD 0001469733 Lynch Terence W 9805 KATY FREEWAY, SUITE 400 HOUSTON TX 77024 0 1 0 0 See Remarks Common Stock 2018-06-01 4 S 0 10800 27.39 D 105404 D This transaction was executed in multiple trades at prices ranging from $27.37 to $27.40. 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. Senior Vice President and Chief Accounting Officer /s/ Kyle N. Roane, Attorney-in-Fact 2018-06-01