# EDGAR Filing Document

**Accession Number:** 0001694426
**File Stem:** 0001140361-26-011770
**Filing Date:** 2026-3
**Character Count:** 4089
**Document Hash:** d7931edc45c35f571d020e8056e7b122
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-26-011770.hdr.sgml**: 20260327

**ACCESSION NUMBER**: 0001140361-26-011770

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260327

**DATE AS OF CHANGE**: 20260327

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Delek US Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001694426
- **STANDARD INDUSTRIAL CLASSIFICATION:** PETROLEUM REFINING [2911]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 352581557
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38142
- **FILM NUMBER:** 26808152

**BUSINESS ADDRESS:**
- **STREET 1:** 310 SEVEN SPRINGS WAY
- **STREET 2:** SUITE 500
- **CITY:** BRENTWOOD
- **STATE:** TN
- **ZIP:** 37027
- **BUSINESS PHONE:** 615-771-6701

**MAIL ADDRESS:**
- **STREET 1:** 310 SEVEN SPRINGS WAY
- **STREET 2:** SUITE 500
- **CITY:** BRENTWOOD
- **STATE:** TN
- **ZIP:** 37027

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Delek Holdco, Inc.
- **DATE OF NAME CHANGE:** 20170111

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### UNITED STATES<br>

### SECURITIES AND EXCHANGE COMMISSION<br>

#### Washington, D.C. 20549

### SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934<br>

(Amendment No.<u> </u>)

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))**

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to § 240.14a-12

![](logo.jpg)<br>

### Delek US Holdings, Inc.
(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

☒ No fee required.

☐ Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act rules 14a6(i)(1) and 0-11

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![](logo.jpg)

#### SUPPLEMENT TO PROXY STATEMENT
FOR THE ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD ON APRIL 20, 2026

#### EXPLANATORY NOTE

This Supplement dated March 27, 2026 (this "Supplement"), amends and supplements the definitive proxy statement of Delek US Holdings, Inc. (the "Company") dated March 10, 2026 (the "Proxy Statement") and is being furnished to the Company's stockholders in connection with the solicitation of proxies by the Board of Directors of the Company for use at the Annual Meeting of Stockholders to be held on April 20, 2026, at 11:30 a.m. Central Time. (the "Annual Meeting").

Following the filing of the Proxy Statement, Institutional Shareholder Services ("ISS"), a proxy advisory firm, recommended voting against Proposal 3 in the Proxy Statement that would approve a 2026 Long-Term Incentive Plan (the "2026 Plan") that would, among other things, increase the number of shares of common stock authorized for issuance over the Company's existing 2016 Long-Term Incentive Plan (the "2016 Plan") by an additional 1,400,000 shares.

Based on the ISS recommendation, the Company has decided to revise the text of the 2026 Long-Term Incentive Plan Proposal (Proposal 3) to reduce the increase in the number of shares of common stock authorized for issuance under the 2026 Plan over the 2016 Plan down to an additional 1,300,000 shares, and revise the text of the Amended and Restated 2026 Plan (attached as Appendix A to the Proxy Statement) to change the number of shares available for awards in Section 4(a) to 1,300,000 shares of common stock. No other changes to the Proxy Statement are being made.

This Supplement should be read in conjunction with the Proxy Statement. The information contained in this Supplement modifies or supersedes any inconsistent information contained in the Proxy Statement. Capitalized terms used herein and not otherwise defined have the meaning given to such terms in the Proxy Statement.

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