EXHIBIT 10

AGREEMENT

JOINT FILING OF SCHEDULE 13D

The undersigned hereby agree to jointly prepare and file with regulatory authorities this Schedule 13D and any future amendments thereto reporting each of the undersigned’s beneficial ownership of securities of Energen Corporation, and hereby affirm that such Schedule 13D is being filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the other, except to the extent that he or it knows or has reason to believe that such information is inaccurate.

Date: January 31, 2018	CORVEX MANAGEMENT LP
	By:	/s/ Keith Meister
		Keith Meister
		Managing Partner
Date: January 31, 2018	KEITH MEISTER
	By:	/s/ Keith Meister
		Keith Meister
Date: January 31, 2018	VINCENT J. INTRIERI
	By	/s/ Vincent J. Intrieri
		Vincent J. Intrieri