Birchtech (BCHT.TO), was last seen up 3.7% in after-hours New York trade after the company on Thursday said its first-quarter loss narrowed as revenue jumped by almost a third.
The company lost US$1.3 million, or US$0.06 per share, compared with a loss of US$1.7 million, or US$0.09. The result missed the consensus estimate for a loss of US$0.04 per share, according to FactSet.
First quarter revenue jumped 32% to US$4.2 million, from US$3.2 million in the prior-year period. Analysts had expected US$3.8 million. The rise in revenue was primarily due to growth in water-treatment revenue along with higher revenue for Birchtech's air business.
"The first quarter of 2026 has created a launch pad for the achievements we expect to execute upon this year. With growth in our water business now making an impact on our bottom line with increased revenues, we will continue to see expansion in this area over the next several months," said chief executive Richard MacPherson.
Birchtech shares were last seen up US$0.05 to US$1.39 after hours. They closed up $0.02, to $1.84, on the Toronto Stock Exchange.