Note: This is NOT an IPO. This is a public offering – an uplisting to the NYSE-American Exchange from the OTC Market. Our stock is traded on the Toronto Stock Exchange (TSX) under the symbol “BCHT” and it is quoted on the OTCQB market tier operated by the OTC Markets Group Inc. under the symbol “BCHT” – according to the prospectus. On Feb. 11, 2026, the last reported sale price of Birchtech’s common stock on the OTCQB was $3.36.

(Incorporated in Delaware)

We provide mercury capture solutions for coal-fired power plants driven by our patented two-part SEA® process using a powerful combination of science and engineering. Our leading-edge services have been shown to achieve mercury emissions removal at a significantly lower cost and with less operational impact to coal-fired power plants than other used methods, while maintaining and/or increasing power plant output and preserving the marketability of byproducts for beneficial use. We design systems and materials tailored and formulated specifically to each customer’s coal-fired units. North America is currently the largest market for our emissions technologies. The market for mercury removal from power plant emissions in the United States has largely been driven by federal regulations. The MATS rule, proposed by the EPA in May 2011 and which became effective in April 2012, is intended to reduce air emissions of heavy metals, including Hg, from all major U.S. power plants burning coal or oil, which are the leading source of non-natural mercury emissions in the U.S. Our mercury removal technologies and systems achieve mercury removal levels which meet or exceed the MATS requirements with lower cost and plant systems impacts than typical PAC or BAC sorbent injection systems. Our products have been shown to be successful across a myriad of fuel and system types, tunable to any configuration, and environmentally friendly, allowing for the recycling of fly ash for beneficial use.

Our SEA® technology provides total mercury control with solutions that are based on a thorough scientific understanding of actual and probable interactions involved in mercury capture in coal-fired flue gas. A complete understanding of the complexity of mercury-sorbent-flue gas interactions and chemisorption mechanisms allows for optimal control strategy and product formulation, resulting in effective mercury capture. Combined with a thorough proprietary audit of the plant and its configuration and instrumentation, we believe our complete science and engineering approach for mercury-sorbent-flue gas interactions are well-understood, highly predictive, and critical to delivering total mercury control.

We believe that a significant percentage of coal-fired power plants in the United States have adopted and are infringing upon our two-part SEA® process for mercury removal from coal-fired power plants.

Beginning in 2019, we began to actively enforce our patent rights against unauthorized use of our patented technologies, and have since initiated patent litigation in various jurisdictions against multiple infringers, claiming infringement of our patents related to our two-part process for mercury removal from coal-fired power plants. We view such litigation as a last resort. Our goal and overall strategy is to convert infringers to our supply chain.

(Note: Birchtech raised $15 million by pricing its public offering – part of its uplisting to the NYSE AmEx – on Wednesday night, Feb. 25, 2026. Birchtech increased the number of shares to 6.25 million – up from 4.5 million in the prospectus – and cut the price to $2.40 – down from $3.36, the assumed price. Background: Birchtech cut its small public offering’s size to 4.5 million shares – down from 5.4 million shares – and trimmed the assumed offering price to $3.36 – down from $3.67 – to raise $15 million, according to its S-1/A filing dated Feb. 12, 2026. This is a public offering planned in conjunction with Birchtech’s plan to uplist its stock to the NYSE-AmEx from the OTC Market. Background: Birchtech filed its S-1 in January 2026, when it disclosed that it was offering 4.8 million shares at an assumed public offering price of $4.15.)