{"schema_version":"secwatch.filing_event.v1","accession":"0001829126-24-006581","form_type":"8-K/A","ticker":"ADNH","cik":"0001744494","company_name":"ADVENT TECHNOLOGIES HOLDINGS, INC.","filed_at":"2024-10-02T23:59:59+00:00","discovered_at":"2026-05-14T18:03:09.434477+00:00","generated_at":"2026-05-30T22:42:29.056553+00:00","sec_items":["4.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Advent Technologies dismisses EY as auditor, appoints M&K; EY letter attached","bullets":["EY dismissed as independent auditor on Sept 17, 2024; M&K CPAS appointed on Sept 20, 2024.","EY's audit reports for FY2023 and FY2022 included a going-concern explanatory paragraph but were unqualified.","No disagreements with EY on accounting principles or auditing scope during FY2023 and through Sept 17, 2024.","Material weakness in internal control over financial reporting disclosed in FY2024 10-K was noted as a reportable event.","EY furnished a letter to SEC (Exhibit 16.1) agreeing with the company's statements in this report."],"urls":{"canonical":"https://secwatch.observer/filing/0001829126-24-006581","json":"https://secwatch.observer/filing/0001829126-24-006581.json","markdown":"https://secwatch.observer/filing/0001829126-24-006581.md","text":"https://secwatch.observer/filing/0001829126-24-006581.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1744494/000182912624006581/0001829126-24-006581-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1744494/000182912624006581/adventtech_8ka.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-30T22:42:29.056553+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}