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LanzaTech Global, Inc. (LNZA) red flags

CIK 0001843724 路 Skokie, IL 路 SIC 2860 路 All EDGAR filings

8 verified red-flag event(s) since 2025-04-01. Red flag score: 63 how it's calculated

4LanzaTech Global, Inc. (LNZA) Going-concern doubt (10-Q)nano2026-05-14
quarterly (unaudited) disclosure; also within 90 days: Auditor change 路 company history
4LanzaTech Global, Inc. (LNZA) Auditor changemicro2026-04-16
also within 90 days: Going-concern doubt 路 company history
5LanzaTech Global, Inc. (LNZA) Going-concern doubtnano2026-03-31
in auditor's report; also within 90 days: Auditor change 路 company history
3LanzaTech Global, Inc. (LNZA) Going-concern doubt (10-Q)nano2025-11-19
quarterly (unaudited) disclosure 路 company history
3LanzaTech Global, Inc. (LNZA) Going-concern doubt (10-Q)nano2025-08-19
quarterly (unaudited) disclosure 路 company history
4LanzaTech Global, Inc. (LNZA) Going-concern doubt (10-Q)micro2025-05-19
quarterly (unaudited) disclosure; also within 90 days: Late quarterly report (NT 10-Q) 路 company history
4LanzaTech Global, Inc. (LNZA) Late quarterly report (NT 10-Q)nano2025-05-09
filed late on 2025-05-19; also within 90 days: Going-concern doubt 路 company history
5LanzaTech Global, Inc. (LNZA) Going-concern doubtmicro2025-04-15
in auditor's report; also within 90 days: Late quarterly report (NT 10-Q) 路 company history

Red flag score: 63 / 100 · high

Computed only from the verified red flags below: each flag earns points for its severity, loses half its weight every 180 days, and companies with several different flag types in the past year get a bonus. Total points 49.9 → score = 100 × (1 − e−points/50) = 63. Full method

FlagFiledSeverityPointsAgeDecayCounts
Going-concern doubt2026-05-143/514.0156 d×0.557.7
Auditor change2026-04-163/514.0184 d×0.496.9
Going-concern doubt2026-03-315/530.0200 d×0.4613.9
Going-concern doubt2025-11-193/514.0332 d×0.283.9
Going-concern doubt2025-08-193/514.0424 d×0.202.7
Going-concern doubt2025-05-193/514.0516 d×0.141.9
Late quarterly report (NT 10-Q)2025-05-093/59.8526 d×0.131.3
Going-concern doubt2025-04-155/530.0550 d×0.123.6
Multiple flag types in the last 365 days (2 types)+8

The red flag score summarizes how many, how serious and how recent a company's verified SEC red-flag filings are. It describes filing events only. It is not a fraud score, credit rating or prediction, and not investment advice.

What happened next

FlagDateCap at flag30d90d180d
Going-concern doubt2026-05-14$39.8M-67.8%-66.8%pending
Auditor change2026-04-16$83.3M-80.6%-85.8%-86.8%
Going-concern doubt2026-03-31$37.1M+49.2%-52.2%-64.1%
Going-concern doubt2025-11-19$30.1M+0.3%-31.7%-39.4%
Going-concern doubt2025-08-19$45.8M-6.9%-39.2%-58.9%
Going-concern doubt2025-05-19$54.5M+1.7%-16.8%-49.4%
Late quarterly report (NT 10-Q)2025-05-09$47.7M+28.5%+44.6%-28.2%
Going-concern doubt2025-04-15$57.4M+7.1%+21.4%+0.9%

Stock return after each flag; pending = window not yet elapsed; n/a = no price data.

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