Exhibit 99.1 Delek US Holdings Reports First Quarter 2024 Results • Net loss of $32.6 million or$(0.51) per share, adjusted net loss of $26.2 million or$(0.41) per share, adjusted EBITDA of $158.7 million • In 2024, successfully executed Delek Logistics debt and equity offerings: ◦ Improved liquidity to approximately$800 million ◦ Added 3.6 million DKL units for a total 47.2 million outstanding units and increased volume activity ◦ Improved leverage ratio to 4.01x from 4.34x at year-end 2023 ◦ Diluted DK ...