X0206 3 2017-08-11 0 0000277595 ENERGEN CORP EGN 0001535472 Corvex Management LP 667 MADISON AVENUE NEW YORK NY 10065 0 0 1 0 0001307631 Meister Keith A. 667 MADISON AVENUE NEW YORK NY 10065 0 0 1 0 Common Stock 9790768 I See Footnotes Call Options (obligation to sell) 60.00 2017-10-20 Common Stock 415200 I See Footnotes Put Options (obligation to buy) 40.00 2018-01-19 Common Stock 415200 I See Footnotes Shares of common stock (the "Shares") of Energen Corporation (the "Issuer") held for the accounts of certain private investment funds for which Corvex Management LP ("Corvex") acts as investment adviser, including Corvex Master Fund, LP and Corvex Select Equity Master Fund LP (collectively, the "Corvex Funds"). The general partner of Corvex is controlled by Mr. Meister. For purposes of Section 16 of the Securities Exchange Act of 1934, each of Corvex and Mr. Meister disclaims beneficial ownership of the securities of the Issuer held directly by the Corvex Funds except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that any of Corvex or Mr. Meister is the beneficial owner of such securities for purposes of Section 16 or any other purpose. These options were exercisable immediately upon issuance. Represents listed American-style call options sold by Corvex on behalf of the Corvex Funds. Represents listed American-style put options sold by Corvex on behalf of the Corvex Funds. CORVEX MANAGEMENT LP, Name: /s/ Keith Meister, Title: Managing Partner 2017-08-16 KEITH MEISTER, Name: /s/ Keith Meister 2017-08-16