BRENTWOOD, Tenn.–November 6, 2018 —Delek US Holdings, Inc. (NYSE: DK) (“Delek US”) today announced financial results for its third quarter ended September30, 2018. Delek US reported third quarter 2018 net income of $179.8 million, or $2.03 per diluted share, versus net income of $104.4 million, or $1.29 per diluted share, for the quarter ended September30, 2017. On an adjusted basis, Delek US reported adjusted net income of $174.8 million, or $2.02 per diluted share for the third quarter 2018. This compares to adjusted net income of $60.9 million, or $0.77 per diluted share, in the prior-year period. Adjusted earnings before interest, taxes, depreciation and amortization (“Adjusted EBITDA”) was $310.6 million compared to Adjusted EBITDA of $186.7 million in the prior-year period. Reconciliations of net income reported under U.S. GAAP to adjusted net income and Adjusted EBITDA are included in the financial tables attached to this release.