Exhibit 10.9

EXECUTION VERSION

THIRD AMENDMENT TO THIRD AMENDED AND RESTATED

RECEIVABLES PURCHASE AGREEMENT

THIS THIRD AMENDMENT TO THIRD AMENDED AND RESTATED RECEIVABLES PURCHASE AGREEMENT (this “Amendment”), dated as of May 14, 2019, is entered into among ARCH RECEIVABLE COMPANY, LLC (the “Seller”), ARCH COAL SALES COMPANY, INC. (the “Servicer”), the various financial institutions party to the Agreement (as defined below) as Conduit Purchasers (the “Conduit Purchasers”), as Related Committed Purchasers (the “Related Committed Purchasers”), as LC Participants (the “LC Participants”), and as Purchaser Agents (the “Purchaser Agents”), and PNC BANK, NATIONAL ASSOCIATION (“PNC”), as Administrator (the “Administrator”) and as LC Bank (the “LC Bank”; together with the Conduit Purchasers, the Related Committed Purchasers and the LC Participants, the “Purchasers”).

RECITALS

1.The parties hereto are parties to the Third Amended and Restated Receivables Purchase Agreement, dated as of October 5, 2016 (as amended, restated, supplemented or otherwise modified through the date hereof, the “Agreement”).

2.The parties hereto desire to amend the Agreement as hereinafter set forth.

NOW THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows:

SECTION 1.Certain Defined Terms. Capitalized terms that are used but not defined herein shall have the meanings set forth in the Agreement.

SECTION 2.Amendment to the Agreement. Clause (ii) of the definition of “Excess Concentration” set forth in Exhibit I of the Agreement is hereby amended in its entirety by amending and restating it as follows:

“(ii) the amount by which the aggregate Outstanding Balance of all Eligible Receivables then in the Receivables Pool that have a stated maturity which is more than 45 days after the original invoice date of such Eligible Receivables exceeds 30% (or solely during a Minimum Liquidity Period, such lesser percentage (not to be reduced below 10%) from time to time designated by the Administrator or any Purchaser Agent in its sole discretion in a written notice delivered to Seller and each Purchaser Agent) of the aggregate Outstanding Balance of all Eligible Receivables then in the Receivables Pool; plus”

SECTION 3.Representations and Warranties. Each of the Seller and the Servicer hereby represents and warrants to the Administrator, the Purchaser Agents and the Purchasers as follows:

(a)Representations and Warranties. The representations and warranties made by such Person in the Agreement and each of the other Transaction Documents are true and correct as of the date hereof (unless stated to relate solely to an earlier date, in which case such representations or warranties were true and correct as of such earlier date).

(b)Enforceability. The execution and delivery by such Person of this Amendment, and the performance of each of its obligations under this Amendment and the Agreement, as amended hereby, are within each of its organizational powers and have been duly authorized by all necessary action on its part. This Amendment and the Agreement, as amended hereby, are such Person’s valid and legally binding obligations, enforceable in accordance with their respective terms.

(c)No Default. Both before and immediately after giving effect to this Amendment and the transactions contemplated hereby, no Termination Event or Unmatured Termination Event exists or shall exist.

SECTION 4.Effect of Amendment; Ratification. All provisions of the Agreement, as expressly amended and modified by this Amendment, shall remain in full force and effect. After this Amendment becomes effective, all references in the Agreement (or in any other Transaction Document) to “the Receivables Purchase Agreement”, “this Agreement”, “hereof”, “herein” or words of similar effect, in each case referring to the Agreement shall be deemed to be references to the Agreement as amended by this Amendment. This Amendment shall not be deemed, either expressly or impliedly, to waive, amend or supplement any provision of the Agreement other than as specifically set forth herein. The Agreement, as amended by this Amendment, is hereby ratified and confirmed in all respects.

SECTION 5.Effectiveness. This Amendment shall become effective as of the date hereof, upon receipt by the Administrator of duly executed counterparts of this Amendment.

SECTION 6.Counterparts. This Amendment may be executed in any number of counterparts and by different parties on separate counterparts, each of which when so executed shall be deemed to be an original and all of which when taken together shall constitute but one and the same instrument. Delivery of an executed counterpart of a signature page to this Amendment by facsimile or electronic transmission shall be effective as delivery of a manually executed counterpart hereof.

SECTION 7.Governing Law. This Amendment shall be governed by, and construed in accordance with, the internal laws of the State of New York (including for such purposes Sections 5-1401 and 5-1402 of the General Obligations Law of the State of New York).

SECTION 8.Section Headings. The various headings of this Amendment are included for convenience only and shall not affect the meaning or interpretation of this Amendment, the Agreement or any provision hereof or thereof.

SECTION 9.Successors and Assigns. This Amendment shall be binding upon and shall inure to the benefit of the parties hereto and their respective successors and permitted assigns.

SECTION 10.Ratification. After giving effect to this Amendment and the transactions contemplated by this Amendment, all of the provisions of the Performance Guaranty shall remain in full force and effect and the Performance Guarantor hereby ratifies and affirms the Performance

732261075 15494375 2

Guaranty and acknowledges that the Performance Guaranty has continued and shall continue in full force and effect in accordance with its terms.

SECTION 11.Transaction Document. For the avoidance of doubt, each party hereto agrees that this Amendment constitutes a Transaction Document.

SECTION 12.Severability. Each provision of this Amendment shall be severable from every other provision of this Amendment for the purpose of determining the legal enforceability of any provision hereof, and the unenforceability of one or more provisions of this Amendment in one jurisdiction shall not have the effect of rendering such provision or provisions unenforceable in any other jurisdiction.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

732261075 15494375 3

IN WITNESS WHEREOF, the parties have executed this Amendment as of the date first written above.

ARCH RECEIVABLE COMPANY, LLC,

as Seller

By:    /s/ Matthew C. Giljum            
Name:    Matthew C. Giljum

Title:    Vice President and Treasurer

ARCH COAL SALES COMPANY, INC.,

as Servicer

By:    /s/ John T. Drexler                
Name:    John T. Drexler

Title:    Vice President and Treasurer

ARCH COAL INC.,

as Performance Guarantor

By:    /s/ Robert G. Jones                
Name:    Robert G. Jones

Title: Senior Vice President – Law, General Counsel and Secretary

732261075 15494375 1 Third Amendment to Third A&R RPA (Arch Coal)

PNC BANK, NATIONAL ASSOCIATION,

as Administrator

By:    /s/ Michael Brown                
Name:    Michael Brown

Title:    Senior Vice President

PNC BANK, NATIONAL ASSOCIATION,

as a Purchaser Agent

By:    /s/ Michael Brown                
Name:    Michael Brown

Title: Senior Vice President

PNC BANK, NATIONAL ASSOCIATION,

as the LC Bank and as an LC Participant

By:    /s/ Michael Brown                
Name:    Michael Brown

Title: Senior Vice President

PNC BANK, NATIONAL ASSOCIATION,

as a Related Committed Purchaser

By:    /s/ Michael Brown                
Name: Michael Brown

Title: Senior Vice President

732261075 15494375 2 Third Amendment to Third A&R RPA (Arch Coal)

REGIONS BANK,

as a Purchaser Agent

By:    /s/ Mark A. Kassis                
Name: Mark A. Kassis

Title: Managing Director

REGIONS BANK,

as a Related Committed Purchaser

By:    /s/ Mark A. Kassis                
Name: Mark A. Kassis

Title: Managing Director

REGIONS BANK,

as an LC Participant

By:    /s/ Mark A. Kassis                
Name: Mark A. Kassis

Title: Managing Director

732261075 15494375 3 Third Amendment to Third A&R RPA (Arch Coal)