Form 4 Filing for Arq, Inc.

Shimon Steinmetz, Chief Financial Officer of Arq, Inc., reported the purchase of 1402 shares of Common Stock on September 4, 2026, for an average price of $2.2889 per share. This transaction was made directly, resulting in 351,925 shares owned post-transaction. Additionally, Steinmetz reported an indirect purchase of 4356 shares of Common Stock through Steinmetz Advisory Group, LLC, for an average price of $2.2737 per share. These shares are held by Steinmetz Advisory Group, with Steinmetz identified as the ultimate control person and indirect beneficial owner. Following this transaction, 13,126 shares are held indirectly. The reporting person has provided undertakings to furnish full information regarding the specific prices within the reported ranges upon request.