EXHIBIT 14

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.

Dated: May 21, 2018

CORVEX MANAGEMENT LP

By:	/s/ Keith Meister
	Keith Meister
	Managing Partner

KEITH MEISTER
By:	/s/ Keith Meister
	Keith Meister

ICAHN PARTNERS MASTER FUND LP

ICAHN OFFSHORE LP

ICAHN PARTNERS LP

ICAHN ONSHORE LP

BECKTON CORP.

HOPPER INVESTMENTS LLC

BARBERRY CORP.

HIGH RIVER LIMITED PARTNERSHIP

By:	Hopper Investments LLC, general partner
By:	Barberry Corp.

By:	/s/ Edward E. Mattner
	Name: Edward E. Mattner
	Title: Authorized Signatory

ICAHN CAPITAL LP

By:	IPH GP LLC, its general partner
By:	Icahn Enterprises Holdings L.P., its sole member
By:	Icahn Enterprises G.P. Inc., its general partner

IPH GP LLC

By:	Icahn Enterprises Holdings L.P., its sole member
By:	Icahn Enterprises G.P. Inc., its general partner

ICAHN ENTERPRISES HOLDINGS L.P.
	By:	Icahn Enterprises G.P. Inc., its general partner
ICAHN ENTERPRISES G.P. INC.

By:	/s/ SungHwan Cho
	Name: SungHwan Cho
	Title: Chief Financial Officer

/s/ Carl C. Icahn

CARL C. ICAHN