---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-25-042944"
form_type: "8-K"
ticker: "LNZA"
cik: "0001843724"
company_name: "LanzaTech Global, Inc."
filed_at: "2025-09-26T23:59:59+00:00"
generated_at: "2026-05-17T05:36:15.732124+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# LanzaTech amends preferred stock agreement, extends financing deadline and defines reverse split terms

## Summary
- Extended deadline for common stock financing to Oct 15, 2025; target $35M-$60M at $5/share post reverse split.
- Requisite stockholder approvals now include 100:1 reverse stock split and par value adjustment.
- Purchaser waived registration statement deadline; company must file within 10 business days after warrant shares issued.
- Amendment No. 2 and Certificate of Amendment filed September 22, 2025; Waiver Agreement dated September 26, 2025.

## SEC filing metadata
- accession: 0001628280-25-042944
- form_type: 8-K
- ticker: LNZA
- cik: 0001843724
- company_name: LanzaTech Global, Inc.
- filed_at: 2025-09-26T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1843724/000162828025042944/0001628280-25-042944-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1843724/000162828025042944/amci-20250922.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-25-042944
- JSON: https://secwatch.observer/filing/0001628280-25-042944.json
- Plain text: https://secwatch.observer/filing/0001628280-25-042944.txt

## Key facts
- Governance Changes
  LanzaTech Global, Inc.: Filed a Certificate of Amendment to the Amended and Restated Certificate of Designation of Series A Convertible Senior Preferred Stock (effective 2025-09-22).
  - Change: charter amendment
  - Effective: 2025-09-22
  source text: On September 22, 2025, the Company filed a Certificate of Amendment to the Amended and Restated Certificate of Designation of Series A Convertible Senior Preferred Stock (the “CoD Amendment”) with the Office of the Secretary of State of the State of Delaware.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1843724/000162828025042944/0001628280-25-042944-index.htm

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