Delek US Holdings Inc

Controls and Procedures

ITEM 4. CONTROLS AND PROCEDURES

Our disclosure controls and procedures are designed to provide reasonable assurance that the information that we are required to disclose in reports we file under the Exchange Act is accumulated and appropriately communicated to management. We carried out an evaluation required by Rule 13a-15(b) of the Exchange Act, under the supervision and with the participation of our management, including the Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures at the end of the reporting period. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the reporting period.

We acquired H2O Midstream effective September 11, 2024 and Gravity effective January 2, 2025, and have included the operating results and assets and liabilities of H2O Midstream and Gravity in our condensed consolidated financial statements as of March 31, 2025. As permitted by SEC guidance for newly acquired businesses, management’s assessment of the Company’s disclosure controls and procedures did not include an assessment of those disclosure controls and procedures of H2O Midstream and Gravity. We are currently in the process of integrating the H2O Midstream and Gravity operations, control processes and information systems into our systems and control environment.

Other than the acquisition of Gravity, there have been no changes in our internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that occurred during the first quarter of 2025 that have materially affected or are reasonably likely to materially affect our internal control over financial reporting.

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