Deck Slone - Feb 27, 2021 Form 4/A - Amendment Insider Report for ARCH RESOURCES, INC. (ARCH)

Role: Sr. VP - Strategy & Public Pol
Signature: /s/ Rosemary L. Klein, Attorney-in-Fact
Stock symbol: ARCH
Transactions as of: Feb 27, 2021
Transactions value $: -$74,894
Form type: 4/A - Amendment
Date filed: 10/17/2022, 12:16 PM
Date Of Original Report: Mar 2, 2021
Next filing: Oct 14, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ARCH	Common Stock	Options Exercise		+3.28K	+43.17%		10.9K	Feb 27, 2021	Direct	F1
transaction	ARCH	Common Stock	Tax liability	-$50.7K	-1.06K	-9.73%	$47.92	9.83K	Feb 27, 2021	Direct	F2
transaction	ARCH	Common Stock	Sale	-$24.1K	-493	-5.02%	$48.98	9.34K	Mar 1, 2021	Direct	F3

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	-3.28K	-33.33%	$0.00	6.57K	Feb 27, 2021	Class A Common Stock	3.28K		Direct	F1, F4

* 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 sale of shares was to satisfy the reporting person's tax withholding obligations above the statutory withholding rate and was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 11, 2021.
F4	The restricted stock units are fully vested.

Remarks:

This amendment is being filed to correct the number of shares and restricted stock units allocated to the reporting person's former spouse pursuant to a domestic relations order.