---
schema_version: "secwatch.filing_event.v1"
accession: "0001477932-25-002233"
form_type: "8-K"
ticker: "BCHT"
cik: "0000728385"
company_name: "Birchtech Corp."
filed_at: "2025-03-31T23:59:59+00:00"
generated_at: "2026-05-24T02:40:04.712601+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Birchtech restates 2022-2024 financials due to revenue recognition error; no cash impact

## Summary
- Company will restate audited FY2022, FY2023, and interim 2023/2024 financials for under-recognized license revenue.
- Error: entire proceeds from 2022 license agreement should have been recognized as revenue in 2022, including financing component.
- Restatement moves revenue to 2022, removes revenue from 2023 and 2024; cash balances unchanged.
- Board and Audit Committee concluded non-reliance on March 28, 2025 after consulting with auditor Rosenberg Rich.
- Corrected recognition was already reflected in the FY2024 10-K filed on March 31, 2025.

## SEC filing metadata
- accession: 0001477932-25-002233
- form_type: 8-K
- ticker: BCHT
- cik: 0000728385
- company_name: Birchtech Corp.
- filed_at: 2025-03-31T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 4.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/728385/000147793225002233/0001477932-25-002233-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/728385/000147793225002233/meec_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001477932-25-002233
- JSON: https://secwatch.observer/filing/0001477932-25-002233.json
- Plain text: https://secwatch.observer/filing/0001477932-25-002233.txt

## Key facts
- Auditor Changes
  Birchtech Corp. reported that prior financial statements should not be relied upon.
  - Action: non reliance
  - Auditor: Rosenberg Rich Baker Berman, P.A.
  source text: concluded that the Company will need to restate its audited consolidated financial statements for the year ended December 31, 2023 and the interim unaudited consolidated financial statements for each quarterly period in 2023 and in 2024
  evidence_url: https://www.sec.gov/Archives/edgar/data/728385/000147793225002233/0001477932-25-002233-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.