secwatch.observer — SEC 8-K summary ====================================== Issuer: Arcturus Therapeutics Holdings Inc. (ARCT) CIK: 0001768224 Form: 8-K Filed at: 2026-08-25T10:00:33+00:00 Accession: 0001193805-26-001130 Event type: other_material Sentiment: neutral Materiality: 0.40 Item codes: 7.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Arcturus to present ARCT-810 OTC deficiency data at SSIEM 2026 -------------------------------------------------------------- - Poster on ARCT-810 mRNA therapy for ornithine transcarbamylase deficiency at SSIEM 2026 in Helsinki on Aug 25, 2026 - Data covers dietary intake and biochemical outcomes in adolescents and adults - Additional data and regulatory plan expected later this quarter - Presentation furnished as Exhibit 99.1 to Form 8-K Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1768224/000119380526001130/0001193805-26-001130-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1768224/000119380526001130/e665725_8k-arct.htm HTML page: https://secwatch.observer/filing/0001193805-26-001130 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer