secwatch.observer — SEC 8-K summary ====================================== Issuer: Birchtech Corp. (BCHT) CIK: 0000728385 Form: 8-K Filed at: 2023-09-14T23:59:59+00:00 Accession: 0001477932-23-006876 Event type: other_material Sentiment: neutral Materiality: 0.35 Item codes: 4.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Midwest Energy Emissions dismisses Marcum LLP, engages RRBB P.A. as new auditor ------------------------------------------------------------------------------- - Audit Committee approved dismissal of Marcum effective immediately on September 11, 2023. - Engaged Rosenberg Rich Baker Berman, P.A. as independent auditor for fiscal year ending Dec 31, 2023. - No disagreements with Marcum on accounting principles, disclosures, or audit scope. - Marcum's 2022 audit report was unqualified; prior material weaknesses previously disclosed in Form 10-K. - Company provided Marcum with disclosure letter; Marcum's response filed as Exhibit 16.1. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/728385/000147793223006876/0001477932-23-006876-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/728385/000147793223006876/meec_8k.htm HTML page: https://secwatch.observer/filing/0001477932-23-006876 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer