{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-026169","form_type":"8-K","ticker":"ENZN","cik":"0000727510","company_name":"Viskase Holdings, Inc.","filed_at":"2026-03-11T23:59:59+00:00","discovered_at":"2026-05-14T18:02:37.596294+00:00","generated_at":"2026-05-15T15:17:41.321585+00:00","sec_items":["1.01","3.03","7.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"Enzon extends rights agreement to March 18 and exchange offer to March 16","bullets":["Ninth Amendment extends Section 382 Rights Agreement expiration to noon, March 18, 2026.","Exchange offer for Series C Preferred Stock extended to 5:00 p.m. Eastern, March 16, 2026.","Offer allows Series C Preferred holders to exchange shares for Enzon common stock."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-026169","json":"https://secwatch.observer/filing/0001104659-26-026169.json","markdown":"https://secwatch.observer/filing/0001104659-26-026169.md","text":"https://secwatch.observer/filing/0001104659-26-026169.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/727510/000110465926026169/0001104659-26-026169-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/727510/000110465926026169/tm267492d8_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T15:17:41.321585+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":[{"claim_id":"177c9577f8da4de7ea0d59031c7550273224336c","claim":"Viskase Holdings, Inc. amended Ninth Amendment to the Section 382 Rights Agreement with Continental Stock Transfer & Trust Company valued at Extended the Final Expiration Date from noon, New York City time, on March 11, 2026 to noon, New Yor (effective 2026-03-10).","evidence_excerpt":"On March 10, 2026, Enzon Pharmaceuticals, Inc. (the “ Company ”) entered into the Ninth Amendment to the Section 382 Rights Agreement (the “ Ninth Amendment ”), which amends the Section 382 Rights Agreement, dated as of August 14, 2020 (the “ Rights Agreement ”), by and between the Company and Continental Stock Transfer & Trust Company, as rights agent.","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/727510/000110465926026169/0001104659-26-026169-index.htm","confidence":0.95,"family_label":"Material Agreements","details":[{"label":"Action","value":"amendment"},{"label":"Counterparty","value":"Continental Stock Transfer & Trust Company"},{"label":"Value","value":"Extended the Final Expiration Date from noon, New York City time, on March 11, 2026 to noon, New Yor"},{"label":"Effective","value":"2026-03-10"}]}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}