X0306 4 2021-01-12 1 0001594466 Pioneer PE Holding LLC PE 0001713575 Hughes Karen Parfitt 303 COLORADO STREET AUSTIN TX 78701 1 0 0 0 Class A common stock 2021-01-12 4 D 0 39129 D 0 D On January 12, 2021, pursuant to the Agreement and Plan of Merger dated as of October 20, 2020 (as amended, the "merger agreement"), (i) a direct wholly owned subsidiary of Pioneer Natural Resources Company ("Pioneer") merged with and into Parsley Energy, Inc. ("Parsley"), with Parsley surviving the merger as a direct wholly owned subsidiary of Pioneer (the "first merger" and the surviving entity, the "surviving corporation"); (ii) simultaneously with the first merger, another direct wholly owned subsidiary of Pioneer ("Opco Merger Sub") merged with and into Parsley Energy, LLC, a majority-owned subsidiary of Parsley ("Parsley LLC"), with Parsley LLC surviving the merger as a direct and indirect wholly owned subsidiary of Pioneer (the "Opco merger"); (cont'd from Footnote 1) and (iii) immediately following the first merger and the Opco merger, the surviving corporation merged with and into a third direct wholly owned subsidiary of Pioneer ("Merger Sub LLC"), with Merger Sub LLC surviving the merger as a direct wholly owned subsidiary of Pioneer (together with the first merger and the Opco merger, the "mergers"). (cont'd from Footnote 2) Pursuant to the merger agreement, (i) each eligible share of Parsley Class A common stock issued and outstanding immediately prior to the effective time of the first merger (the "effective time") was converted into the right to receive 0.1252 shares of Pioneer common stock and (ii) each outstanding Parsley time-based restricted stock unit award held by a non-employee director became vested and converted into the right to receive a number of shares of Pioneer common stock, rounded up or down to the nearest whole share, equal to the product of (a) the number of shares of Parsley Class A common stock subject to such award as of immediately prior to the effective time and (b) 0.1252. On January 11, 2021 (the day prior to the mergers), the closing price of one share of Pioneer Class A common stock was $131.42. /s/ Karen Parfitt Hughes, by Colin Roberts, as Attorney-in-Fact 2021-01-12