Delek US (DK) Proxy filing summary

Executive summary

• Supplement amends the definitive proxy statement for the annual meeting scheduled for April 20, 2026, at 11:30 a.m. Central Time.

• The amendment addresses feedback from Institutional Shareholder Services (ISS) regarding a proposed long-term incentive plan.

Voting matters and shareholder proposals

• Proposal 3 concerns approval of a 2026 Long-Term Incentive Plan, initially seeking to increase authorized shares by 1,400,000 over the prior plan.

• Following ISS's recommendation to vote against, the proposed increase was reduced to 1,300,000 additional shares.

• No other proposals or proxy statement sections were changed by this supplement.

Executive compensation and say-on-pay

• The 2026 Long-Term Incentive Plan is designed to provide equity-based awards to eligible participants.

• The plan revision reduces the number of shares available for awards to 1,300,000.