The law firm of Kirby McInerney LLP is investigating potential claims against Arq, Inc. (“Arq” or the “Company”) (NASDAQ: ARQ). The investigation concerns whether the Company and/or members of its senior management may have violated federal securities laws or engaged in other unlawful business practices.

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What Happened?

On March 9, 2026, Arq announced that it decided to “pause GAC production to conduct a comprehensive engineering and production process optimization review of the path forward for the Company’s GAC business. As a result, the Company does not expect any GAC production in fiscal year 2026.” Shares of Arq fell on this news.

What Should I Do?

At this stage, no lawsuit has been filed. The investigation is ongoing to determine whether claims may be brought under federal securities laws.

If you purchased or otherwise acquired Arq securities, have information, or would like to learn more about this investigation, please contact Lauren Molinaro of Kirby McInerney LLP by email at investigations@kmllp.com, or fill out the contact form below, to discuss your rights or interests with respect to these matters at no cost.

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Kirby McInerney LLP is a New York-based plaintiffs’ law firm concentrating in securities, antitrust, whistleblower, and consumer litigation. The firm’s efforts on behalf of shareholders in securities litigation have resulted in recoveries totaling billions of dollars. Additional information about the firm can be found at Kirby McInerney LLP’s website.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules.

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