Paul A. Lang - 13 Oct 2023 Form 4 Insider Report for ARCH RESOURCES, INC.

Role: President & CEO, Director
Signature: /s/ Rosemary L. Klein, Attorney-in-Fact
Issuer symbol: N/A
Transactions as of: 13 Oct 2023
Net transactions value: -$1,036,870
Form type: 4
Filing time: 16 Oct 2023, 18:09:15 UTC
Previous filing: 28 Feb 2023
Next filing: 13 Feb 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ARCH	Common Stock	Options Exercise		+15,150	+11%		147,522	13 Oct 2023	Direct	F1
transaction	ARCH	Common Stock	Tax liability	$1,036,870	-6,712	-4.5%	$154.48	140,810	13 Oct 2023	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ARCH	Restricted Stock Units	Options Exercise	$0	-15,150	-100%	$0.000000^*	0	13 Oct 2023	Class A Common Stock	15,150		Direct	F1, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock of Arch Resources, Inc. (the "Company").
F2	These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations.
F3	The restricted stock units are fully vested.