• Arq named Peter Owino interim chief accounting officer, effective June 12, 2026.
• Owino is an accounting and finance consultant at Princeton Business Consulting.
• He previously served as corporate controller at Colliers Engineering & Design, chief accounting officer at Merchant e-Solutions, director at KPMG New York.
• CEO Bob Rasmus was designated principal financial officer until incoming CFO Shimon Steinmetz starts around July 27, 2026.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Arq Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001515156-26-000075), on June 18, 2026, and is solely responsible for the information contained therein.