---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-021534"
form_type: "8-K"
ticker: "BCHT"
cik: "0000728385"
company_name: "Birchtech Corp."
filed_at: "2026-02-27T23:59:59+00:00"
generated_at: "2026-05-15T23:18:00.258810+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Birchtech prices $15M public offering of 6.25M shares at $2.40; uplists to NYSE American

## Summary
- Gross proceeds of $15M from 6.25M shares at $2.40; net proceeds ~$13.1M (or $15.2M if overallotment exercised).
- CEO Richard MacPherson purchased $750k of shares (312.5k shares) in offering.
- Shares approved for NYSE American listing, trading begins Feb 26 under symbol BCHT; previously on OTCQB.
- 90-day lock-up on insiders; proceeds for operating expenses, working capital, general corporate purposes.

## SEC filing metadata
- accession: 0001104659-26-021534
- form_type: 8-K
- ticker: BCHT
- cik: 0000728385
- company_name: Birchtech Corp.
- filed_at: 2026-02-27T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/728385/000110465926021534/0001104659-26-021534-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/728385/000110465926021534/tm267456d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-021534
- JSON: https://secwatch.observer/filing/0001104659-26-021534.json
- Plain text: https://secwatch.observer/filing/0001104659-26-021534.txt

## Key facts
- Material Agreements
  Birchtech Corp. entered into Underwriting Agreement with Lake Street Capital Markets, LLC, as representative of the several underwriters named therein valued at approximately $13.1 million (effective 2026-02-25).
  - Action: entry
  - Agreement: underwriting
  - Counterparty: Lake Street Capital Markets, LLC, as representative of the several underwriters named therein
  - Value: approximately $13.1 million
  - Effective: 2026-02-25
  source text: On February 25, 2026, Birchtech Corp. (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with Lake Street Capital Markets, LLC, as representative of the several underwriters named therein (collectively, the “Underwriters”), relating to the public offering of 6,250,000 shares (the “Shares”) of the Company’s common stock, par value $0.001 per share, at a purchase price per share of $2.40 (the “Offering Price”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/728385/000110465926021534/0001104659-26-021534-index.htm

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