---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-25-036478"
form_type: "8-K"
ticker: "LNZA"
cik: "0001843724"
company_name: "LanzaTech Global, Inc."
filed_at: "2025-07-29T23:59:59+00:00"
generated_at: "2026-05-17T23:47:41.137676+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# LanzaTech shareholders approve 100-for-1 reverse split and authorize 2.58B shares

## Summary
- Authorized common shares increased from 600M to 2.58B (Proposal 4 approved 178.9M for, 36.5M against).
- Reverse stock split at 100-for-1 approved (Proposal 5: 204.9M for, 36.0M against).
- Issuance of >19.9% of outstanding shares for preferred conversion, warrant exercise, and potential financing approved (Proposal 8).
- Proposal to allow stockholder action by written consent failed (152.9M for, 60.5M against; required supermajority).

## SEC filing metadata
- accession: 0001628280-25-036478
- form_type: 8-K
- ticker: LNZA
- cik: 0001843724
- company_name: LanzaTech Global, Inc.
- filed_at: 2025-07-29T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1843724/000162828025036478/0001628280-25-036478-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1843724/000162828025036478/amci-20250728.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-25-036478
- JSON: https://secwatch.observer/filing/0001628280-25-036478.json
- Plain text: https://secwatch.observer/filing/0001628280-25-036478.txt

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