ARCT ARCTURUS THERAPEUTICS HOLDINGS INC Investments/Divestments 8-K Filing 2023 - Investment Arcturus Therapeutics Holdings Inc. announces that Meiji Seika Pharma Co., Ltd. has submitted an additional application for a Booster Dose of ARCT-154 for COVID-19 prevention in adults in Japan.Get access to all SEC 8-K filings of the ARCTURUS THERAPEUTICS HOLDINGS INC