secwatch.observer — SEC 8-K summary
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Issuer:     Arcturus Therapeutics Holdings Inc. (ARCT)
CIK:        0001768224
Form:       8-K
Filed at:   2025-09-26T23:59:59+00:00
Accession:  0001193805-25-001368
Event type: other_material
Sentiment:  positive
Materiality: 0.55
Item codes: 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Meiji Seika Pharma launches two-dose vial of KOSTAIVE (sa-mRNA COVID-19 vaccine) in Japan
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- New two-dose vial presentation of KOSTAIVE launched in Japan on September 26, 2025.
- Vaccine targets SARS-CoV-2 Omicron sublineage JN.1 variant XEC.
- Non-clinical studies show neutralizing antibodies against XEC, LP.8.1, XFG, NB.1.8.1 variants.
- Manufacturing and marketing approval granted August 28, 2025.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1768224/000119380525001368/0001193805-25-001368-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1768224/000119380525001368/e664858_8k-arct.htm
  HTML page:      https://secwatch.observer/filing/0001193805-25-001368

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer