{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-25-030028","form_type":"8-K/A","ticker":"LNZA","cik":"0001843724","company_name":"LanzaTech Global, Inc.","filed_at":"2025-06-06T23:59:59+00:00","discovered_at":"2026-05-14T18:02:50.099507+00:00","generated_at":"2026-05-19T18:35:13.090336+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"LanzaTech amends CFO disclosure; Koyanagi receives $60K retention award","bullets":["Justin Pugh stepped down as interim CFO effective June 2; Sushmita Koyanagi appointed CFO.","On June 4, Koyanagi entered a promotion letter with a $60K cash retention award contingent on service through Dec 31, 2025.","Retention award satisfies part of prior sign-on awards; total sign-on awards now $135K in cash."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-25-030028","json":"https://secwatch.observer/filing/0001628280-25-030028.json","markdown":"https://secwatch.observer/filing/0001628280-25-030028.md","text":"https://secwatch.observer/filing/0001628280-25-030028.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1843724/000162828025030028/0001628280-25-030028-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1843724/000162828025030028/amci-20250522.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-19T18:35:13.090336+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":"c3b4066d3b","claim":"Sushmita Koyanagi was appointed as Chief Financial Officer at LanzaTech Global, Inc..","evidence_excerpt":"Sushmita Koyanagi, the Company's then-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/1843724/000162828025030028/0001628280-25-030028-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":"e55f95e428","claim":"Justin Pugh departed as Interim Chief Financial Officer at LanzaTech Global, Inc..","evidence_excerpt":"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/1843724/000162828025030028/0001628280-25-030028-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"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}