Arcturus Therapeutics Holdings Inc. is a US-based RNA medicines company that specializes in vaccines for infectious and rare diseases, such as OTC deficiency and cystic fibrosis lung disease. With a range of development and vaccine programs, the company collaborates with various partners to develop nucleic acid-based therapeutic candidates for hepatitis B, siRNA medicines for non-alcoholic steatohepatitis, and mRNA therapeutic and vaccine candidates for rare disease targets and COVID-19. Founded in 2013, the company is headquartered in San Diego, California.