BRENTWOOD, Tenn.– August 7, 2018 — Delek US Holdings, Inc. (NYSE: DK) (“Delek US”) today announced financial results for its second quarter ended June 30, 2018. Delek US reported second quarter 2018 net income of $79.1 million, or $0.89 per diluted share, versus net loss of $(37.9) million, or $(0.61) per basic share, for the quarter ended June 30, 2017. On an adjusted basis, Delek US reported net income of $89.0 million, or $1.03 per diluted share for the second quarter 2018. This compares to adjusted net loss of $(25.0) million, or $(0.40) per basic share, in the prior-year period. Adjusted earnings before interest, taxes, depreciation and amortization (“Adjusted EBITDA”) was $199.1 million compared to Adjusted EBITDA of $4.2 million in the prior- year period. Reconciliations of net income (loss) reported under U.S. GAAP to adjusted net income (loss) and Adjusted EBITDA are included in the financial tables attached to this release.