{"schema_version":"secwatch.filing_event.v1","accession":"0001411685-25-000023","form_type":"8-K","ticker":"VTGN","cik":"0001411685","company_name":"Vistagen Therapeutics, Inc.","filed_at":"2025-03-06T23:59:59+00:00","discovered_at":"2026-05-14T18:03:03.559094+00:00","generated_at":"2026-05-25T05:43:08.779488+00:00","sec_items":["8.01","9.01"],"event_type":"litigation","sentiment":"negative","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Vistagen sued by pro se plaintiffs over alleged misleading clinical trial disclosures","bullets":["John Cesario and David Preka filed lawsuit on Feb 13, 2025 (Case No. 4:25-cv-01510) in Northern District of California.","Complaint alleges violations of Sections 10(b), Rule 10b-5, Sections 11 and 17(a) over public disclosures on clinical trials.","Plaintiffs seek compensatory, punitive damages, fees, and costs.","Vistagen believes allegations are wholly without merit and intends to defend vigorously."],"urls":{"canonical":"https://secwatch.observer/filing/0001411685-25-000023","json":"https://secwatch.observer/filing/0001411685-25-000023.json","markdown":"https://secwatch.observer/filing/0001411685-25-000023.md","text":"https://secwatch.observer/filing/0001411685-25-000023.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1411685/000141168525000023/0001411685-25-000023-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1411685/000141168525000023/vtgn-20250303.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-25T05:43:08.779488+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"}