---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-25-029809"
form_type: "8-K"
ticker: "LNZA"
cik: "0001843724"
company_name: "LanzaTech Global, Inc."
filed_at: "2025-06-06T23:59:59+00:00"
generated_at: "2026-05-19T18:35:53.858891+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# LanzaTech extends BGTF loan to Dec 2029 (8%/12% interest); appoints CAO

## Summary
- Loan maturity extended from Oct 2027 to Dec 2029; interest accrues at 8% through Dec 2028 then 12% through Dec 2029.
- BGTF consented to amend Loan and Framework Agreements; execution expected by June 23, 2025.
- Michael Heraty appointed Chief Accounting Officer, succeeding Sushmita Koyanagi who became CFO.
- Heraty previously VP Internal Audit & SOX at LanzaTech since July 2023; CPA, MBA from UChicago.

## SEC filing metadata
- accession: 0001628280-25-029809
- form_type: 8-K
- ticker: LNZA
- cik: 0001843724
- company_name: LanzaTech Global, Inc.
- filed_at: 2025-06-06T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1843724/000162828025029809/0001628280-25-029809-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1843724/000162828025029809/amci-20250602.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-25-029809
- JSON: https://secwatch.observer/filing/0001628280-25-029809.json
- Plain text: https://secwatch.observer/filing/0001628280-25-029809.txt

## Key facts
- Executive change
  Sushmita Koyanagi changed role as Chief Financial Officer at LanzaTech Global, Inc..
  - Action: promoted
  - Role: Chief Financial Officer
  source text: on June 2, 2025, the Board of Directors of the Company appointed Michael Heraty, Vice President – Internal Audit & SOX Compliance to serve as Chief Accounting Officer of the Company following Sushmita Koyanagi’s promotion to Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1843724/000162828025029809/0001628280-25-029809-index.htm
- Executive change
  Michael Heraty was appointed as Chief Accounting Officer at LanzaTech Global, Inc..
  - Action: appointed
  - Role: Chief Accounting Officer
  source text: on June 2, 2025, the Board of Directors of the Company appointed Michael Heraty, Vice President – Internal Audit & SOX Compliance to serve as Chief Accounting Officer of the Company following Sushmita Koyanagi’s promotion to Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1843724/000162828025029809/0001628280-25-029809-index.htm

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