F1On December 12, 2016, WHR Holdings, LLC ("WildHorse Holdings") entered into the Master Contribution Agreement (the "Master Contribution Agreement"), pursuant to which, immediately prior to the closing of WildHorse Resource Development Corporation's (the "Issuer") initial public offering, certain of the parties thereto, including WildHorse Holdings, contributed their membership interest in certain entities to the Issuer in exchange for shares of the Issuer's common stock, par value $0.01 per share ("Common Stock"). Pursuant to the Master Contribution Agreement, WildHorse Holdings received 21,200,084 shares of Common Stock.
F2This form is jointly filed by WildHorse Holdings, WildHorse Investment Holdings, LLC ("WildHorse Investment Holdings"), NGP X US Holdings, L.P. ("NGP X US Holdings"), NGP X Holdings GP, L.L.C. ("NGP X Holdings GP"), NGP Natural Resources X, L.P. ("NGP X"), G.F.W. Energy X, L.P. ("GFW X"), GFW X, L.L.C. ("GFW X GP") and NGP Energy Capital Management, L.L.C. ("NGP ECM"). WildHorse Investment Holdings owns 100% of the capital interests in WildHorse Holdings and NGP X US Holdings owns 90.3% of WildHorse Investment Holdings, and certain members of the Issuer's management team own the remaining 9.7%. As a result, NGP X US Holdings may be deemed to indirectly beneficially own the shares held by WildHorse Holdings. NGP X US Holdings disclaims beneficial ownership of these shares except to the extent of its pecuniary interest therein.
F3(Continued from Footnote 2) NGP X Holdings GP (the sole general partner of NGP X US Holdings), NGP X (the sole member of NGP X Holdings GP), GFW X (the sole general partner of NGP X) and GFW X GP (the sole general partner of GFW X) may each be deemed to share voting and dispositive power over the reported shares and therefore may also be deemed to be the beneficial owner of these shares. GFW X GP has delegated full power and authority to manage NGP X US Holdings to NGP ECM and accordingly, NGP ECM may be deemed to share voting and dispositive power over these shares and therefore may also be deemed to be the beneficial owner of these shares. Each of WildHorse Investment Holdings, NGP X US Holdings, NGP X Holdings GP, NGP X, GFW X, GFW X GP and NGP ECM disclaims beneficial ownership of the reported securities in excess of its pecuniary interest therein.
F4On December 19, 2016, WildHorse Holdings entered into the Stockholders' Agreement (the "Stockholders' Agreement"), pursuant to which, each of the parties thereto agreed, among other things, to cause the shares of Common Stock and any equity securities of the Issuer held by such party to be voted for the individuals properly designated by the parties to the Stockholders' Agreement for election to the Issuer's board of directors. As a result, the parties thereto may be deemed to be members of a group holding over 10% of the outstanding Common Stock of the Issuer (the "Group") for the purposes of Section 13(d)(3) of the Exchange Act of 1934, as amended (the "Exchange Act").
F5WildHorse Holdings disclaims beneficial ownership of the shares of Common Stock held by the members of the Group, except to the extent of its pecuniary interest therein, and this statement shall not be construed as an admission that WildHorse Holdings is the beneficial owner of any such shares for purposes of Section 16 of the Exchange Act or for any other purpose.

Remarks

For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, WildHorse Holdings may be deemed to be a director by deputization by virtue of the right of it to designate members of the Issuer's board of directors pursuant to the Stockholders' Agreement