secwatch.observer — SEC 8-K summary ====================================== Issuer: Viskase Holdings, Inc. (ENZN) CIK: 0000727510 Form: 8-K Filed at: 2026-03-18T23:59:59+00:00 Accession: 0001104659-26-029952 Event type: other Sentiment: neutral Materiality: 0.20 Item codes: 1.01, 3.03, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Enzon extends shareholder rights plan expiration to March 24, 2026 via Tenth Amendment -------------------------------------------------------------------------------- - Tenth Amendment to Section 382 Rights Agreement extends Final Expiration Date from noon March 18 to noon March 24, 2026. - Rights Agreement otherwise remains unmodified; this is the tenth successive short-term extension since June 2024. - Company states extension is in best interests of Enzon and its stockholders. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/727510/000110465926029952/0001104659-26-029952-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/727510/000110465926029952/tm267491d4_8k.htm HTML page: https://secwatch.observer/filing/0001104659-26-029952 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer