By Connor Hart

Arq shares fell after the company said it would restructure its leadership team and retool operations, as it widened its fourth-quarter loss and issued an underwhelming outlook for the year.

The stock was down 23%, to $2.46, in premarket trading Tuesday. Through Monday's close, shares have lost more than a third of their value over the past year

The carbon-products producer said late Monday that its finance and operations chiefs would leave the company. Jay Voncannon will no longer hold the role of CFO due to changes made to Arq's finance team, and Deke Williamson will depart, effective April 18, as the company eliminates its COO role.

With the changes, Arq said it will pause granular activated carbon, or GAC, production as it conducts "a comprehensive engineering and production process optimization review" of the business' path forward.

The company said it will temporarily idle one of its facilities due to the decision, which resulted in a $45 million non-cash impairment charge during the recent quarter.

In the fourth quarter, Arq widened its net loss to $50 million from a loss of $1.3 million a year earlier. On a per-share basis, the company notched a quarterly loss of $1.20, compared with Wall Street models for a loss of 7 cents.

Revenue climbed 8.8% to $29.4 million, ahead of the $28.6 million that analysts expected.

For the year, Arq expects adjusted Ebitda--or earnings before interest, taxes, depreciation and amortization--of $17 million to $20 million, with revenue of $120 million to $125 million.

Analysts were looking for adjusted Ebitda of $15.7 million on revenue of $137.2 million.

Write to Connor Hart at connor.hart@wsj.com

(END) Dow Jones Newswires

March 10, 2026 06:37 ET (10:37 GMT)

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