Here are the S-1 registration statements from BCHTD (BCHTD) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
An S-1 covers the registration statement a company files to sell shares publicly, so if you follow BCHTD 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 BCHTD filings page.
Birchtech Corp. plans a primary offering of 4,464,286 shares of common stock, with an assumed price of $3.36 per share, and has granted underwriters a 30‑day option for 669,643 additional shares. Estimated net proceeds are about $13.1 million, or $15.2 million if the option is fully exercised.
The company provides specialty activated carbon technologies for mercury emissions control at coal‑fired power plants and is expanding into PFAS-focused water treatment. As of February 11, 2026, 19,455,966 shares were outstanding, rising to 23,920,252 after the offering. Key risks include heavy reliance on evolving U.S. environmental regulations, customer concentration, active patent challenges, going‑concern uncertainty, and dependence on collection of a $78.4 million patent judgment that is under appeal.
Birchtech Corp. is conducting a primary offering of 5,449,592 shares of common stock, based on an assumed public offering price of $3.67 per share. The company expects to raise approximately $17.7 million in net proceeds, or about $20.5 million if underwriters fully exercise a 817,439‑share over‑allotment option.
Shares outstanding are expected to increase from 19,455,966 to 24,905,558. Birchtech plans to use the cash, together with existing funds, for ongoing operating expenses, working capital, and general corporate purposes. The company has applied to list its stock on the NYSE American under the symbol “BCHT”, with NYSE American approval a condition to closing the deal; trading would cease on the OTCQB if the uplisting occurs.
Birchtech provides specialty activated carbon technologies for mercury emissions control at coal‑fired power plants and is expanding into water treatment focused on PFAS removal. It highlights regulatory uncertainty around U.S. emissions and water rules, customer concentration, patent protection challenges, and a going concern risk given a year‑end 2025 cash balance of about $2.3 million.