{"schema_version":"secwatch.filing_event.v1","accession":"0001558370-22-014954","form_type":"8-K","ticker":"HRGN","cik":"0001563665","company_name":"Harvard Apparatus Regenerative Technology, Inc.","filed_at":"2022-10-12T23:59:59+00:00","discovered_at":"2026-05-14T18:03:51.173969+00:00","generated_at":"2026-06-23T04:05:25.138044+00:00","sec_items":["4.01","9.01"],"event_type":"other_material","sentiment":"negative","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Biostage dismisses auditor Wei, Wei & Co. and engages Marcum LLP; prior FY2021 report had going concern","bullets":["Dismissed Wei, Wei & Co. as independent auditor on Oct 10, 2022.","FY2021 audit opinion included a going concern paragraph about substantial doubt.","No disagreements with Wei on accounting principles or practices during recent years.","Engaged Marcum LLP as new independent registered public accounting firm on Oct 10, 2022.","No prior consultations with Marcum on accounting or audit matters."],"urls":{"canonical":"https://secwatch.observer/filing/0001558370-22-014954","json":"https://secwatch.observer/filing/0001558370-22-014954.json","markdown":"https://secwatch.observer/filing/0001558370-22-014954.md","text":"https://secwatch.observer/filing/0001558370-22-014954.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1563665/000155837022014954/0001558370-22-014954-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1563665/000155837022014954/tmb-20221010x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-23T04:05:25.138044+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"}