BRENTWOOD, Tenn.– May 7, 2018 — Delek US Holdings, Inc. (NYSE: DK) (“Delek US”) today announced financial results for its first quarter ended March 31, 2018. Delek US reported first quarter net loss of $(34.9) million, or $(0.43) per basic share, versus net income of $11.2 million, or $0.18 per diluted share, for the quarter ended March 31, 2017. On an adjusted basis, Delek US reported net income of $28.0 million, or $0.33 per basic share for the quarter ended March 31, 2018. This compares to adjusted net income of $10.1 million, or $0.16 per diluted share on an adjusted basis in the prior year period. Adjusted earnings before interest taxes, depreciation and amortization (“Adjusted EBITDA”) was $113.1 million compared to Adjusted EBITDA of $60.1 million in the prior year period. Reconciliations of net (loss) income reported under U.S. GAAP to adjusted net income and Adjusted EBITDA are included in the financial tables attached to this release.