UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No. )

Filed by the Registrant x
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
x	Definitive Additional Materials
¨	Soliciting Material under §240.14a-12

Arch Coal, 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):
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ADDITIONAL INFORMATION REGARDING THE ANNUAL MEETING OF STOCKHOLDERS TO BE HELD ON THURSDAY, APRIL 30, 2020

The following Notice of Change of Location relates to the notice of meeting and the accompanying proxy statement (the “Proxy Statement”) of Arch Coal, Inc. (the “Company”), dated March 16, 2020, furnished to stockholders of the Company in connection with the solicitation of proxies by the Board of Directors of the Company for use at the Company’s Annual Meeting of Stockholders to be held on Thursday, April 30, 2020 (the “Annual Meeting”). These definitive additional materials are being filed with the Securities and Exchange Commission and are being made available to stockholders on or about April 15, 2020.

PLEASE READ THIS NOTICE CAREFULLY IN CONJUNCTION WITH THE PROXY STATEMENT.

April 15, 2020

NOTICE OF CHANGE OF LOCATION

OF ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD ON THURSDAY, APRIL 30, 2020

Dear Stockholders,

Due to the public health risks related to the coronavirus disease 2019 (COVID-19), NOTICE IS HEREBY GIVEN that the location of the Annual Meeting has been changed. The Annual Meeting will be held by remote communication only, in a virtual meeting format. You will not be able to attend the Annual Meeting in person. As previously announced, the Annual Meeting will be held on Thursday, April 30, 2020 at 10:00 a.m., Central Time.

As described in the proxy materials previously distributed in connection with the Annual Meeting, stockholders as of March 10, 2020, the record date, are entitled to vote at the Annual Meeting. You can attend the Annual Meeting at www.virtualshareholdermeeting.com/ARCH2020 and login by entering the 16-digit control number found on your proxy card, voting instruction form or notice that you have previously received. Once admitted, you may participate in the meeting, submit questions on proxy related items or items of business to be considered at the Annual Meeting, vote or view a list of the stockholders entitled to vote at the meeting during the whole time of the Annual Meeting by following the instructions that will be available on the meeting website. The items of business to be considered at the Annual Meeting are the same as set forth in the meeting notice previously mailed or made available to you.

It is important that you read the proxy materials previously distributed and we encourage you vote your common stock or submit your proxy promptly in advance of the Annual Meeting by one of the methods described in the proxy materials. The proxy card included with the proxy materials that have been previously distributed will not be updated to reflect the change in location. You may continue to use the proxy card previously distributed to you to submit your proxy in connection with the Annual Meeting.

	By Order of the Board of Directors,

	/s/ ROBERT G. JONES
	ROBERT G. JONES
	Senior Vice President – Law, General Counsel and Secretary

INTERNET AVAILABILITY OF PROXY MATERIALS

Important Notice Regarding the Availability of Proxy Materials

for the Stockholder Meeting To Be Held on Thursday, April 30, 2020

The notice of Annual Meeting, Proxy Statement and the Company’s 2019 annual report may be viewed online under the “Investors” section located on the Company’s website at archcoal.com. Information on the Company’s website does not constitute part of the Proxy Statement. You may find more information about the items to be voted on by stockholders at the Annual Meeting, in the sections of the Proxy Statement entitled “Proxy Highlights” and “Questions and Answers About the Annual Meeting.” If you received the notice of Annual Meeting and would like to receive a paper or e-mail copy of our proxy materials, please follow the instructions for requesting such materials included in the Notice.