Stockholders of Delek US Holdings and Alon USA Energy Approve Delek US Holdings Acquisition of Alon USA

BRENTWOOD, Tenn. — June 29, 2017 — Delek US Holdings, Inc. (NYSE: DK) (“Delek US”) today announced that the stockholders of Delek voted to approve all proposals related to Delek US’ acquisition of all of the outstanding shares of Alon USA Energy, Inc. (NYSE: ALJ) (“Alon”) common stock, which Delek US does not already own, in an all-stock transaction. Prior to the transaction, Delek US owned approximately 33.7 million shares, or 47 percent, of the common stock of Alon.