Mr. Lucas Zimmerman reports

BIRCHTECH ANNOUNCES PRICING OF $15 MILLION PUBLIC OFFERING AND UPLISTING TO NYSE AMERICAN STOCK EXCHANGE

Birchtech Corp. has priced an underwritten public offering of 6.25 million shares of its common stock at a public offering price of $2.40 per share, before deducting underwriting discounts and commissions and offering expenses, for aggregate gross proceeds of approximately $15.0-million.

The company intends to use the net proceeds from the offering, together with the company's existing cash, for, among other things, continuing operating expenses, working capital and other general corporate purposes. The company has also granted the underwriters a 30-day option to purchase up to an additional 937,500 shares of common stock at the public offering price solely to cover overallotments, if any. The offering is expected to close on or about Feb. 27, 2026, subject to the satisfaction or waiver of customary closing conditions.

In connection with the offering, the common stock was approved for listing on the NYSE American LLC and will begin trading on the NYSE American on or about the opening of trading on Feb. 26, 2026, under the symbol BCHT. Upon the commencement of trading on the NYSE American, trading of the company's common stock on the OTCQB market tier operated by OTC Markets Group Inc. will terminate. The company's common stock will remain listed on the Toronto Stock Exchange.

Lake Street Capital Markets LLC and Huntington Securities Inc. are acting as joint book-running managers of the offering.

A registration statement on Form S-1 (file No. 333-292701), as amended, relating to the shares of common stock to be issued and sold in the offering was filed with the Securities and Exchange Commission (SEC) and became effective on Feb. 17, 2026. The offering is being made only by means of a prospectus that forms a part of such effective registration statement. Copies of the preliminary prospectus and, when available, the final prospectus may be obtained free of charge on the SEC's website or by contacting Lake Street Capital Markets at 121 South 8th St., suite 1000, Minneapolis, Minn., 55402, by calling 612-326-1305, or by e-mailing syndicate@lakestreetcm.com. The final prospectus will be filed with the SEC and will be available on the SEC's website.

About Birchtech Corp.

Birchtech is a provider of specialty activated carbon technologies, delivering innovative solutions for air and water purification to support a cleaner, more sustainable future. The company provides patented SEA sorbent technologies for mercury emissions capture for the coal-fired utility sector and is developing disruptive water purification technologies with a specialization on forever chemicals such as PFAS and PFOS. Backed by a strong intellectual property portfolio and a team of activated carbon experts, Birchtech provides cleaner air to North American communities and is applying this expertise to an innovative approach in water purification.

We seek Safe Harbor.