---
schema_version: "secwatch.filing_event.v1"
accession: "0001477932-25-009214"
form_type: "8-K"
ticker: "BCHT"
cik: "0000728385"
company_name: "Birchtech Corp."
filed_at: "2025-12-29T23:59:59+00:00"
generated_at: "2026-05-16T12:11:21.575621+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Birchtech announces 1-for-5 reverse stock split effective Dec 26 for uplisting strategy

## Summary
- Reverse stock split at 1-for-5 ratio; effective Dec 26, 2025; trading on split-adjusted basis begins Dec 31, 2025.
- Fractional shares rounded up; no change to authorized shares or par value.
- Purpose: increase per-share price to support planned uplisting and improve marketability.
- Stockholders approved split range Dec 2024; Board set ratio at 1-for-5.
- Symbol temporarily appended with 'D' on OTCQB for 20 business days post-split.

## SEC filing metadata
- accession: 0001477932-25-009214
- form_type: 8-K
- ticker: BCHT
- cik: 0000728385
- company_name: Birchtech Corp.
- filed_at: 2025-12-29T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 3.03, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/728385/000147793225009214/0001477932-25-009214-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/728385/000147793225009214/meec_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001477932-25-009214
- JSON: https://secwatch.observer/filing/0001477932-25-009214.json
- Plain text: https://secwatch.observer/filing/0001477932-25-009214.txt

## Source-grounded claims
- claim_id: 1c64409918f2d7228befcf05523195e2a34ced49
  claim: Birchtech Corp.: Filed a certificate of amendment to effect a 1-for-5 reverse stock split of common stock (effective 2025-12-26).
  evidence_excerpt: On December 23, 2025, Birchtech Corp. (the “Company”) filed a certificate of amendment to the Company’s Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of State of the State of Delaware to effect a 1-for-5 reverse stock split (the “Reverse Split”) of the Company’s issued and outstanding shares of its common stock, par value $0.001 per share, effective on December 26, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/728385/000147793225009214/0001477932-25-009214-index.htm

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