{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-095078","form_type":"8-K","ticker":"ENZN","cik":"0000727510","company_name":"Viskase Holdings, Inc.","filed_at":"2025-09-30T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.243457+00:00","generated_at":"2026-05-17T05:20:27.838522+00:00","sec_items":["1.01","3.03","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"confidence":"high","headline":"Enzon extends shareholder rights plan expiration to Dec 31, 2025","bullets":["Fifth Amendment to Section 382 Rights Agreement extends Final Expiration Date from Sept 30, 2025 to Dec 31, 2025.","No other terms of the Rights Agreement were modified.","Management states the extension is in the best interests of the company and stockholders."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-095078","json":"https://secwatch.observer/filing/0001104659-25-095078.json","markdown":"https://secwatch.observer/filing/0001104659-25-095078.md","text":"https://secwatch.observer/filing/0001104659-25-095078.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/727510/000110465925095078/0001104659-25-095078-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/727510/000110465925095078/tm2527543d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T05:20:27.838522+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"}