Arq, Inc. — Director's Dealing 2025

May 15, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Arq, Inc. (ARQ)
CIK: 0001515156
Period of Report: 2025-05-13

Reporting Person: Rasmus Robert E. (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-05-13	Common Stock	P	2921	$4	Acquired	8183	Indirect
2025-05-14	Common Stock	P	12535	$3.93	Acquired	20718	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	455782	Direct
Common Stock	527779	Indirect

Footnotes

F1: The shares of Common Stock reported on this row are held by RER Legacy Investments II LLC ("RER Legacy"). Mr. Rasmus is the ultimate control person of RER Legacy, and an indirect beneficial owner of these shares. Mr. Rasmus disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F2: The shares of Common Stock reported on this row are held by RER Investments LLC ("RER Investments"). Mr. Rasmus is the ultimate control person of RER Investments, and an indirect beneficial owner of these shares. Mr. Rasmus disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.