Effective March 24, 2017, senior management of Delek US Holdings,
Inc. (“Delek US” or the Company) will begin using the materials
included in Exhibit 99.1 to this report (the Investor Presentation)
in connection with presentations to existing and prospective
investors. The Investor Presentation is incorporated into this Item
8.01 by this reference and will also be available on the Company’s
website at www.delekus.com.

Safe Harbor Provisions Regarding Forward-Looking Statements

This Current Report on Form 8-K contains forward-looking statements
that are based upon current expectations and involve a number of
risks and uncertainties. Statements concerning current estimates,
expectations and projections about future results, performance,
prospects, opportunities, plans, actions and events and other
statements, concerns, or matters that are not historical facts are
forward-looking statements, as that term is defined under the
federal securities laws. These forward-looking statements include,
but are not limited to, statements regarding the proposed merger
with Alon USA Energy, Inc. (“Alon”) , integration and transition
plans, synergies, opportunities, anticipated future performance and
financial position, and other factors.

Investors are cautioned that the following important factors, among
others, may affect these forward-looking statements. These factors
include but are not limited to: risks and uncertainties related to
the expected timing and likelihood of completion of the proposed
merger, including the timing, receipt and terms and conditions of
any required governmental and regulatory approvals of the proposed
merger that could reduce anticipated benefits or cause the parties
to abandon the transaction, the ability to successfully integrate
the businesses, the occurrence of any event, change or other
circumstances that could give rise to the termination of the merger
agreement, the possibility that stockholders of Delek US may not
approve the issuance of new shares of common stock in the merger or
that stockholders of Alon may not approve the merger agreement, the
risk that the parties may not be able to satisfy the conditions to
the proposed transaction in a timely manner or at all, risks
related to disruption of management time from ongoing business
operations due to the proposed transaction, the risk that any
announcements relating to the proposed transaction could have
adverse effects on the market price of Delek US’ common stock or
Alon’s common stock, the risk that the proposed transaction and
its announcement could have an adverse effect on the ability of
Delek US and Alon to retain customers and retain and hire key
personnel and maintain relationships with their suppliers and
customers and on their operating results and businesses generally,
the risk that problems may arise in successfully integrating the
businesses of the companies, which may result in the combined
company not operating as effectively and efficiently as expected,
the risk that the combined company may be unable to achieve
cost-cutting synergies or it may take longer than expected to
achieve those synergies, uncertainty related to timing and amount
of future share repurchases and dividend payments, risks and
uncertainties with respect to the quantities and costs of crude oil
we are able to obtain and the price of the refined petroleum
products we ultimately sell; gains and losses from derivative
instruments; management’s ability to execute its strategy of
growth through acquisitions and the transactional risks associated
with acquisitions and dispositions; acquired assets may suffer a
diminishment in fair value as a result of which we may need to
record a write-down or impairment in carrying value of the asset;
changes in the scope, costs, and/or timing of capital and
maintenance projects; operating hazards inherent in transporting,
storing and processing crude oil and intermediate and finished
petroleum products; our competitive position and the effects of
competition; the projected growth of the industries in which we
operate; general economic and business conditions affecting the
southern United States; and other risks contained in Delek US and
Alons filings with the United States Securities and Exchange
Commission.

Forward-looking statements should not be read as a guarantee of
future performance or results and will not be accurate indications
of the times at or by which such performance or results will be
achieved. Forward-looking information is based on information
available at the time and/or management’s good faith belief with
respect to future events, and is subject to risks and uncertainties
that could cause actual performance or results to differ materially
from those expressed in the statements. Delek US undertakes no
obligation to update or revise any such forward-looking statements,
except as required by applicable law or regulation.

No Offer or Solicitation

This communication relates to a proposed business combination
between Delek US and Alon. This announcement is for informational
purposes only and is neither an offer to purchase, nor a
solicitation of an offer to sell, any securities or the
solicitation of any vote in any jurisdiction

to the proposed transactions or otherwise, nor shall there be any
sale, issuance or transfer or securities in any jurisdiction in
contravention of applicable law. No offer of securities shall be
made except by means of a prospectus meeting the requirements of
Section 10 of the Securities Act of 1933, as amended.

Additional Information and Where to Find It

This communication may be deemed to be solicitation material in
respect of the proposed transaction between Delek US and Alon. In
connection with the proposed transaction, Delek US and/or Alon may
file one or more proxy statements, registration statements, proxy
statement/prospectuses or other documents with the SEC. This
communication is not a substitute for the proxy statement,
registration statement, proxy statement/prospectus or any other
documents that Delek US or Alon may file with the SEC or send to
stockholders in connection with the proposed transaction.
STOCKHOLDERS OF DELEK US AND ALON ARE URGED TO READ ALL RELEVANT
DOCUMENTS FILED WITH THE SEC, INCLUDING THE PROXY STATEMENT(S),
REGISTRATION STATEMENT(S) AND/OR PROXY STATEMENT/PROSPECTUS,
BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED
TRANSACTION. Any definitive proxy statement(s) (if and when
available) will be mailed to stockholders of Delek US and/or Alon,
as applicable. Investors and security holders will be able to
obtain copies of these documents, including the proxy
statement/prospectus, and other documents filed with the SEC (when
available) free of charge at the SEC’s website,
http://www.sec.gov. Copies of documents filed with the SEC by Delek
US will be made available free of charge on Delek US website at
http://www.delekus.com or by contacting Delek US Investor Relations
Department by phone at 615-435-1366. Copies of documents filed with
the SEC by Alon will be made available free of charge on Alon’s
website at http://www.alonusa.com or by contacting Alon’s Investor
Relations Department by phone at 972-367-3808.

Participants in the Solicitation

Delek US and its directors and executive officers, and Alon and its
directors and executive officers, may be deemed to be participants
in the solicitation of proxies from the holders of Delek US common
stock and Alon common stock in respect of the proposed transaction.
Information about the directors and executive officers of Delek US
is set forth in the proxy statement for Delek US 2016 Annual
Meeting of Stockholders, which was filed with the SEC on April 5,
2016, and in the other documents filed after the date thereof by
Delek US with the SEC. Information about the directors and
executive officers of Alon is set forth in the proxy statement for
Alon’s 2016 Annual Meeting of Shareholders, which was filed with
the SEC on April 1, 2016, and in the other documents filed after
the date thereof by Alon with the SEC. Investors may obtain
additional information regarding the interests of such participants
by reading the proxy statement/prospectus regarding the proposed
transaction when it becomes available. You may obtain free copies
of these documents as described in the preceding paragraph.

> Item 9.01 Financial Statements and Exhibits

Not applicable.

Not applicable.

Not applicable.

99.1 Investor presentation materials to be used beginning March 24,
2017.