X0306 4 2020-07-09 0 0001518832 WPX ENERGY, INC. WPX 0001804813 Felix Investments Holdings II, LLC 1530 16TH STREET, SUITE 500 DENVER CO 80202 1 0 1 0 0001805689 Felix Energy Investments II, LLC C/O ENCAP INVESTMENTS L.P. 1100 LOUISIANA STREET, SUITE 4900 HOUSTON TX 77002 1 0 1 0 0001636722 EnCap Energy Capital Fund X, L.P. C/O ENCAP INVESTMENTS L.P. 1100 LOUISIANA STREET, SUITE 4900 HOUSTON TX 77002 1 0 1 0 0001726182 EnCap Partners GP, LLC C/O ENCAP INVESTMENTS L.P. 1100 LOUISIANA STREET, SUITE 4900 HOUSTON TX 77002 1 0 1 0 Common Stock 2020-07-09 4 A 0 1380895 10.46 A 152910532 D The shares reported herein were issued to the Reporting Person pursuant to certain adjustment features described in the Securities Purchase Agreement, dated December 15, 2019, by and between the Issuer and Felix Investments Holdings II, LLC ("Felix Investments"), pursuant to which the Issuer acquired all of the issued and outstanding membership interests of Felix Energy Holdings II, LLC on March 6, 2020. Felix Investments is the record holder of the shares reported herein. Felix Energy Investments II, LLC ("Felix Energy") is the direct and indirect sole owner of Felix Investments. EnCap Energy Capital Fund X, L.P. ("EnCap Fund X") is a member of Felix Energy that holds the right to appoint two of the three representatives to the board of managers of Felix Energy, and pursuant to the limited liability company agreement of Felix Investments, the members of the Felix Investments board of managers are required to be comprised of the same individuals as the Felix Energy board of managers. (continued from footnote 2) EnCap Fund X is controlled indirectly by EnCap Partners GP, LLC ("EnCap Partners GP"). EnCap Partners GP is the sole general partner of EnCap Partners, LP ("EnCap Partners"), which is the managing member of EnCap Investments Holdings, LLC ("EnCap Holdings"), which is the sole member of EnCap Investments GP, L.L.C. ("EnCap Investments GP"), which is the sole general partner of EnCap Investments L.P. ("EnCap Investments LP"). EnCap Investments LP is the sole general partner of EnCap Equity Fund X GP, L.P. ("EnCap Fund X GP"), which is the sole general partner of EnCap Fund X. Each of Felix Energy, EnCap Fund X, EnCap Fund X GP, EnCap Investments LP, EnCap Investments GP, EnCap Holdings, EnCap Partners and EnCap Partners GP may be deemed to share voting or dispositive power over the reported securities. The Reporting Persons disclaim beneficial ownership of these securities except to the extent of any such Reporting Person's pecuniary interest therein. (4) Signed by John D. McCready in his capacity as Chief Financial Officer of Felix Investments Holdings II, LLC. (5) Signed by John D. McCready in his capacity as Chief Financial Officer of Felix Energy Investments II, LLC. (6) Signed by Douglas E. Swanson, Jr. in his capacity as Managing Director of EnCap Investments GP, L.L.C., the General Partner of EnCap Investments L.P., the General Partner of EnCap Equity Fund X GP, L.P., the General Partner of EnCap Energy Capital Fund X, L.P. (7) Signed by Douglas E. Swanson, Jr. in his capacity as Managing Director of EnCap Partners GP, LLC. /s/ John D. McCready (4) 2020-07-09 /s/ John D. McCready (5) 2020-07-09 /s/ Douglas E. Swanson, Jr. (6) 2020-07-09 /s/ Douglas E. Swanson, Jr. (7) 2020-07-09