Kirby McInerney Investigates Potential Securities Law Violations by Arq, Inc.

Investors Encouraged to Contact Firm About Possible Claims

Mar. 21, 2026 at 1:18am

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The law firm of Kirby McInerney LLP is investigating potential securities law violations by Arq, Inc. (NASDAQ:ARQ) and its senior management. The investigation follows Arq's announcement that it will pause GAC production in fiscal year 2026, causing the stock price to decline nearly 49%.

Why it matters

This investigation could lead to a lawsuit against Arq on behalf of investors who purchased the company's securities. If successful, such a lawsuit could result in financial recoveries for affected shareholders.

The details

On March 9, 2026, Arq announced it would 'pause GAC production to conduct a comprehensive engineering and production process optimization review.' As a result, the company does not expect any GAC production in fiscal year 2026. This news caused Arq's stock price to decline by $1.56 per share, or approximately 48.8%, from $3.20 per share on March 9 to $1.64 on March 10.

  • On March 9, 2026, Arq announced it would pause GAC production.
  • On March 10, 2026, Arq's stock price closed at $1.64 per share, down from $3.20 per share on March 9.

The players

Arq, Inc.

A publicly traded company (NASDAQ:ARQ) that is the subject of a securities law investigation by Kirby McInerney LLP.

Kirby McInerney LLP

A New York-based plaintiffs' law firm concentrating in securities, antitrust, whistleblower, and consumer litigation.

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What they’re saying

“The law firm of Kirby McInerney LLP reminds investors its investigation on behalf of Arq, Inc. ('Arq' or the 'Company') (NASDAQ:ARQ) investors concerning the Company's and/or members of its senior management's possible violation of the federal securities laws or other unlawful business practices.”

— Lauren Molinaro, Kirby McInerney LLP

What’s next

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

The takeaway

This investigation highlights the importance of corporate transparency and accountability, as potential securities law violations can have significant financial impacts on investors. The outcome of this investigation could set precedents for future cases involving alleged misconduct by publicly traded companies.