Amendment No. 1 to the Contribution and Merger Agreement, dated May 10, 2018, by and among TPG Pace Energy Holdings Corp., TPG Pace Energy Parent, LLC, EnerVest Energy Institutional Fund XIV-A, L.P., EnerVest Energy Institutional Fund XIV-WIC, L.P., EnerVest Energy Institutional Fund XIV-2A, L.P., EnerVest Energy Institutional Fund XIV-3A, L.P. and EnerVest Energy Institutional Fund XIV-C, L.P

The form of Stockholder Agreement attached as Exhibit A to the Original Agreement is hereby replaced with the form of Stockholder Agreement attached hereto as Exhibit A.

The form of Amended Parent Charter attached as Exhibit N to the Original Agreement is hereby replaced with the form of Amended Parent Charter attached hereto as Exhibit B.

THIS AMENDMENT, THE ORIGINAL AGREEMENT, THE ANNEXES, EXHIBITS AND SCHEDULES HERETO AND THERETO, THE CONFIDENTIALITY AGREEMENT AND THE TRANSACTION DOCUMENTS, COLLECTIVELY, CONSTITUTE THE ENTIRE AGREEMENT BETWEEN THE PARTIES PERTAINING TO THE SUBJECT MATTER HEREOF AND SUPERSEDE ALL PRIOR AGREEMENTS, UNDERSTANDINGS, NEGOTIATIONS, AND DISCUSSIONS, WHETHER ORAL OR WRITTEN, OF THE PARTIES PERTAINING TO THE SUBJECT MATTER HEREOF.

This Amendment shall not constitute an amendment or waiver of any provision of the Original Agreement not expressly referred to herein. The Original Agreement, as amended by this Amendment, is and shall continue to be in full force and effect and is in all respects ratified and confirmed hereby.

This Amendment may be executed in any number of counterparts, and each such counterpart hereof shall be deemed to be an original instrument, but all of such counterparts shall constitute for all purposes one agreement. Any signature hereto delivered by a Party by facsimile or other electronic transmission shall be deemed an original signature hereto. No Party shall be bound until such time as all of the Parties have executed counterparts of this Amendment.

THIS AMENDMENT AND ANY CLAIM, CONTROVERSY, OR DISPUTE ARISING UNDER OR RELATED TO THIS AMENDMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THE RIGHTS, DUTIES, AND RELATIONSHIP OF THE PARTIES HERETO AND THERETO, SHALL BE GOVERNED BY AND CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE, EXCLUDING ANY CONFLICTS OF LAW RULE OR PRINCIPLE THAT MIGHT REFER CONSTRUCTION OF PROVISIONS TO THE LAWS OF ANOTHER JURISDICTION.