May 3 (Reuters) - Pioneer Natural Resources Co ( PXD ):

* EXXONMOBIL ( XOM ): IN CONNECTION WITH MERGER AGREEMENT, COMPANY

INCREASED SIZE OF COMPANY'S BOARD OF DIRECTORS BY ONE MEMBER

* EXXONMOBIL ( XOM ): APPOINTED MARIA S. DREYFUS TO COMPANY'S BOARD

OF

DIRECTORS

* EXXONMOBIL ( XOM ): IN ACCORDANCE WITH FTC CONSENT ORDER IN

CONNECTION

WITH MERGER, SCOTT D. SHEFFIELD WILL NOT JOIN COMPANY'S BOARD

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