Filing Details

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Arch Coal, Inc.

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(Name of Issuer)

Common Stock, par value $0.01

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(Title of Class of Securities)

039380407

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(CUSIP Number of Class of Securities)

Michael Kelly, Esq.

Monarch Alternative Capital LP

535 Madison Avenue

New York, NY 10022

Telephone: (212) 554-1700

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(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

Copies to:

Michael A. Schwartz, Esq.

Willkie Farr & Gallagher LLP

787 Seventh Avenue

New York, NY  10019-6099

(212) 728-8000

November 17, 2016

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(Date of Event which Requires

Filing of this Schedule)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box:  ☐

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits.  See Rule 240.13d-7 for other parties to whom copies are to be sent.

*  The remainder of this cover page shall be filled out for a reporting person's  initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934, as amended (the “Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

This Amendment No. 1 to Schedule 13D (this “Amendment No. 1”) is being filed with respect to the common shares, par value $0.01 per share (“Common Stock”), of Arch Coal, Inc. (the “Issuer”), to amend the Schedule 13D filed on October 17, 2016 (together with this Amendment No. 1, the “Schedule 13D”).  Capitalized terms used but not otherwise defined herein shall have the meanings ascribed to them in the Schedule 13D.

Item 6.

Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.

On November 17, 2016, the Issuer, on one hand, and Monarch Alternative Solutions Master Fund Ltd, Monarch Capital Master Partners III LP, MCP Holdings Master LP, Monarch Debt Recovery Master Fund Ltd, and P Monarch Recovery Ltd on the other hand (the “Shareholders”) entered into a Registration Rights Agreement (the “Registration Rights Agreement”) which provides that the Shareholders are entitled to certain demand or “piggyback” registration rights for the resale of their Common Stock.

The terms of the Registration Rights Agreement, a copy of which is filed herewith as Exhibit 99.1, are incorporated herein by reference.

Item 7.          Material to be Filed as Exhibits

99.1	Registration Rights Agreement, dated November 17, 2016, incorporated by reference to Exhibit 10.1 to the Current Report of Arch Coal, Inc. on Form 8-K filed November 21, 2016.