Birchtech Corp. to Host First Quarter 2026 Earnings Call on May 13 at 5:00 p.m. Eastern Time

About this update from Birchtech Corp.

CORSICANA, Texas, April 29, 2026 (GLOBE NEWSWIRE) -- Birchtech Corp. (NYSE American: BCHT) (TSX: BCHT) (“Birchtech” or the “Company”), a leader in specialty activated carbon technologies for sustainable air and water treatment, today announced that it will release financial results for the first quarter ended March 31, 2026, after market close on Wednesday, May 13, 2026. Management will host an investor conference call at 5:00 p.m. Eastern time on Wednesday, May 13, 2026, to discuss Birchtech's first quarter 2026 financial results and provide a corporate update. To participate, please use the following information: First Quarter 2026 Earnings Conference Call Date: Wednesday, May 13, 2026 Time: 5:00 p.m. Eastern time U.S./Canada Dial-in: 1-877-407-0792 International Dial-in: 1-201-689-8263 Conference ID: 13760298 Webcast: BCHT Q1 2026 Earnings Conference Call Please dial in at least 10 minutes before the start of the call to ensure timely participation. A telephone playback of the call will be available through Wednesday, June 3, 2026. To listen, call 1-844-512-2921 within the United States and Canada or 1-412-317-6671 when calling internationally, using replay pin number 13760298. A webcast replay will be available for one year, using the webcast link above. About Birchtech Corp. Birchtech Corp. (NYSE American: BCHT) (TSX: BCHT) is a leader in 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 SEA disruptive water purification technologies with a specialization on removing contaminants, including ‘forever chemicals’ such as PFAS, from potable water and industrial wastewater. 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 a novel approach in water purification. To learn more, please visit www.birchtech.com . Safe Harbor Statement With the exception of historical information contained in this press release, content herein may contain “forward-looking statements” that are made pursuant to the Safe Harbor Provisions of the U.S. Private Securities Litigation Reform Act of 1995 or forward-looking information under applicable Canadian securities laws (collectively, “forward-looking statements”). Forward-looking statements are generally identified by using words such as “anticipate,” “believe,” “plan,” “expect,” “intend,” “will,” and similar expressions, but these words are not the exclusive means of identifying forward-looking statements. Forward-looking statements in this release include statements relating to expected developments and growth in Birchtech’s business, including market sizing estimates, projected growth rates, anticipated customer engagements, and the Company’s competitive positioning in the ion exchange resin market. These statements are based on management’s current expectations and are subject to uncertainty and changes in circumstances. Investors are cautioned that forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from the statements made. In addition, this release contains time-sensitive information that reflects management’s best analysis only as of the date of this release. Birchtech does not undertake any obligation to publicly update or revise any forward-looking statements to reflect future events, information or circumstances that arise after the date of this release. Further information concerning issues that could materially affect financial performance or other forward-looking statements contained in this release can be found in Birchtech’s periodic filings with the Securities and Exchange Commission or Canadian securities regulators. Investor Relations Contact Lucas A. Zimmerman Managing Director MZ Group - MZ North America (949) 259-4987 [email protected] www.mzgroup.us

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