{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-25-028421","form_type":"8-K","ticker":"LNZA","cik":"0001843724","company_name":"LanzaTech Global, Inc.","filed_at":"2025-05-29T23:59:59+00:00","discovered_at":"2026-05-14T18:02:50.100376+00:00","generated_at":"2026-05-20T06:26:16.950995+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"positive","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"LanzaTech names Sushmita Koyanagi CFO; GC resigns; board member retires; $1M cost savings","bullets":["CFO Justin Pugh steps down June 2; CAO Sushmita Koyanagi appointed permanent CFO effective same date.","GC Joseph Blasko resigns effective June 13; Deputy GC Amanda Fuisz named interim General Counsel.","Board member Gary Rieschel will not stand for re-election; term ends at July 21, 2025 annual meeting.","Leadership consolidation expected to reduce annual costs by approximately $1 million.","Company cites focus on commercial projects for sustainable aviation fuel production."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-25-028421","json":"https://secwatch.observer/filing/0001628280-25-028421.json","markdown":"https://secwatch.observer/filing/0001628280-25-028421.md","text":"https://secwatch.observer/filing/0001628280-25-028421.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1843724/000162828025028421/0001628280-25-028421-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1843724/000162828025028421/amci-20250522.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-20T06:26:16.950995+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"0e8f22f7a6","claim":"Sushmita Koyanagi was appointed as Chief Financial Officer at LanzaTech Global, Inc..","evidence_excerpt":"Sushmita Koyanagi, the Company’s current Chief Accounting Officer, would take on the position of Chief Financial Officer.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1843724/000162828025028421/0001628280-25-028421-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"2f900824c6","claim":"Amanda Koenig Fuisz was appointed as Interim General Counsel at LanzaTech Global, Inc..","evidence_excerpt":"Amanda Koenig Fuisz, Deputy General Counsel, will serve as interim General Counsel effective as of such date.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1843724/000162828025028421/0001628280-25-028421-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed as interim General Counsel"},{"label":"Role","value":"Interim General Counsel"}],"fact_type":"executive_change"},{"claim_id":"5f481cba67","claim":"Joseph Blasko resigned as General Counsel and Corporate Secretary at LanzaTech Global, Inc..","evidence_excerpt":"On May 22, 2025, Joseph Blasko, General Counsel and Corporate Secretary, notified the Company of his decision to resign, effective June 13, 2025, in order to pursue another professional opportunity.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1843724/000162828025028421/0001628280-25-028421-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"General Counsel and Corporate Secretary"}],"fact_type":"executive_change"},{"claim_id":"c3c657c7cb","claim":"Justin Pugh departed as Interim Chief Financial Officer at LanzaTech Global, Inc..","evidence_excerpt":"effective June 2, 2025, Justin Pugh would step down from his role as the Company’s interim Chief Financial Officer","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1843724/000162828025028421/0001628280-25-028421-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"stepped down"},{"label":"Role","value":"Interim Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"f8c6168b1d","claim":"Gary Rieschel departed as Member of the Board at LanzaTech Global, Inc..","evidence_excerpt":"On May 23, 2025, Gary Rieschel notified the Company of his decision to not stand for re-election as a member of the Board.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1843724/000162828025028421/0001628280-25-028421-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"not stand for re-election"},{"label":"Role","value":"Member of the Board"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}