High River LP, Icahn Partners Master Fund LP managed by Icahn Capital LP and Icahn Capital LP entered into a stock purchase agreement to acquire 2.1% stake in Energen Corporation (NYSE:EGN) from Corvex Master Fund, LP and Corvex Select Equity Master Fund LP both managed by Corvex Management LP for approximately $130 million on May 20, 2018. Pursuant to the terms, the buyers will acquire 2 million shares at a price of $64.84 per share. As of May 20, 2018, Corvex Management LP own 8.68% stake in Energen. Under the purchase agreement, 1.25 million shares will be purchased on the second trading day following execution of the purchase agreement and 0.75 shares will be purchased on the earlier of (x) July 18, 2018 or (y) one business day following the receipt by the buyers of clearance under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended. The acquisition will be funded through working capital. The deal is subject to antitrust approval. As on June 19, 2018, Federal Trade Commission granted an early termination notice of antitrust approval waiting period.