Cite Filings / BCHT / 0001104659-26-021168

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424B4

Prospectus

Birchtech Corp. Filed 2026-02-27 Acc 0001104659-26-021168

Documents 1

424B4 Prospectus , tmb-20250930x424b4.htm

Around this filing

2026-03-02 4 President and CEO bought 312,500 shares at $2.40 ($750,000)
2026-02-27 8-K Material agreement · Other events
2026-02-27 424B4 Prospectus
2026-02-25 CERT Certification

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