Company: DK
Filing Date: 2025-03-20
Form Type: DEF 14A
Source: 0001140361-25-009658
Chunk: 8

Company: Delek US Holdings, Inc.
Filing Date: 2025-03-20
Form: DEF 14A
Chunk 8
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 a later-dated but still timely proxy card by mail on or before April 28, 2025; or (c) virtually attending and voting online at the Annual Meeting. If you are a beneficial owner with your shares held in street name, you must follow the instructions of your broker, bank, trust or other nominee who is the registered stockholder of your shares to revoke a proxy. The latest-dated, timely, properly completed voting instructions that you submit will count as your vote. If a vote has been recorded for your shares and you submit a proxy card that is not properly signed and dated, the previously recorded vote will stand. What if I submit my proxy but I do not specify how I want my shares voted? If you submit a proxy but do not specify how you want your shares to be voted, the proxy holder will vote your shares in accordance with the recommendations of the Board of Directors for the four proposals described in this Proxy Statement. If other matters requiring the vote of stockholders properly come before the Annual Meeting, it is the intention of the persons named on the proxy card to vote proxies held by them in accordance with their best judgment.

| DELEK US HOLDINGS, INC. |     | 2025 PROXY STATEMENT | 5 |

TABLE OF CONTENTS

What does it mean if I get more than one proxy card? If your shares are registered in more than one name or in more than one account, you will receive more than one card. Please complete and return all of the proxy cards you receive to ensure that ALLof your shares are voted. Who is soliciting my vote? Your vote is being solicited by our Board of Directors. Certain of our officers, directors, and employees, none of whom will receive additional compensation therefor, may solicit proxies by telephone or other personal communication. The Company may also engage a third party proxy solicitor. We will bear the cost of the solicitation of the proxies, including postage, printing and handling, and will reimburse the reasonable expenses of brokerage firms and others for forwarding material to beneficial owners of shares of Common Stock. Who will count the vote? Broadridge Financial Solutions, Inc. (“Broadridge”) will serve as master tabulator and a representative of Broadridge will act as the inspector of the elections. What is a “quorum”? A “quorum” is the presence of the holders of a majority of the outstanding shares entitled to vote either virtually attending or represented by proxy at the Annual Meeting. There must be a quorum for the Annual