{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-021051","form_type":"8-K","ticker":"ENZN","cik":"0000727510","company_name":"Viskase Holdings, Inc.","filed_at":"2026-02-27T23:59:59+00:00","discovered_at":"2026-05-14T18:02:37.595753+00:00","generated_at":"2026-05-15T23:17:22.538060+00:00","sec_items":["1.01","3.03","7.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Enzon extends Series C Preferred exchange offer to Mar 9; rights plan extended to Mar 11","bullets":["Exchange offer for Series C Preferred Stock extended to 11:59 p.m. ET on March 9, 2026.","Rights Agreement final expiration extended from March 2 to noon ET on March 11, 2026 via Eighth Amendment.","The offer, previously set to expire March 2, is part of the proposed merger with Viskase Companies, Inc."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-021051","json":"https://secwatch.observer/filing/0001104659-26-021051.json","markdown":"https://secwatch.observer/filing/0001104659-26-021051.md","text":"https://secwatch.observer/filing/0001104659-26-021051.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/727510/000110465926021051/0001104659-26-021051-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/727510/000110465926021051/tm267491d2_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T23:17:22.538060+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":"c69e9b2db45bd00dbc32fe20e19dfa068d7928b0","claim":"Viskase Holdings, Inc. amended Eighth Amendment to the Section 382 Rights Agreement with Continental Stock Transfer & Trust Company (effective 2026-02-27).","evidence_excerpt":"On February 27, 2026, Enzon Pharmaceuticals, Inc. (the “ Company ”) entered into the Eighth Amendment to the Section 382 Rights Agreement (the “ Eighth 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/727510/000110465926021051/0001104659-26-021051-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"amendment"},{"label":"Counterparty","value":"Continental Stock Transfer & Trust Company"},{"label":"Effective","value":"2026-02-27"}]}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}