Here are the 10-K annual reports from Birchtech Corp. (BCHT) in our archive since June 2025, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 10-K covers the audited annual report, with the full financial statements, so if you follow BCHT and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full BCHT filings page.
Birchtech Corp. files its annual report outlining its specialty activated carbon business and the main risks it faces. The company supplies patented SEA® mercury-capture technology to coal-fired power plants and is building a water treatment platform focused on PFAS “forever chemicals.” It is investing in two Design Centers to develop reactivated granular activated carbon and ion exchange resins and plans a regional thermal reactivation facility. Birchtech reports a concentrated customer and supplier base, ongoing patent litigation and inter partes review activity, significant reliance on U.S. environmental rules such as MATS and PFAS standards, a 1-for-5 reverse stock split, and recent uplisting of its common stock to the NYSE American.