{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-030585","form_type":"8-K","ticker":"ENZN","cik":"0000727510","company_name":"Viskase Holdings, Inc.","filed_at":"2025-04-01T23:59:59+00:00","discovered_at":"2026-05-14T18:02:51.117723+00:00","generated_at":"2026-05-24T01:15:12.654614+00:00","sec_items":["1.01","3.03","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Enzon extends shareholder rights plan expiration to June 30, 2026","bullets":["Third Amendment to Section 382 Rights Agreement extends final expiration date from March 31, 2025 to June 30, 2026.","Rights plan, designed to preserve net operating loss tax attributes, otherwise remains unchanged.","Company management states extension is in the best interests of Enzon and its stockholders."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-030585","json":"https://secwatch.observer/filing/0001104659-25-030585.json","markdown":"https://secwatch.observer/filing/0001104659-25-030585.md","text":"https://secwatch.observer/filing/0001104659-25-030585.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/727510/000110465925030585/0001104659-25-030585-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/727510/000110465925030585/tm2511075d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-24T01:15:12.654614+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"}