Dyadic International, Inc., a biotechnology platform company, develops, produces, and sells enzymes and other proteins in the United States. The company utilizes its patented and proprietary C1 technology and other technologies to conduct research, development, and commercial activities for the development and manufacturing of human and animal vaccines and drugs, such as virus like particles and antigens, monoclonal antibodies, fab antibody fragments, Fc-fusion proteins, biosimilars and/or biobetters, and other therapeutic enzymes and proteins. It offers DYAI-100, SARS-CoV-2-S-RBD antigen vaccine candidate towards a first-in-human Phase 1 clinical trial, is to validate to serve as proof of concept for the development of next generation multivariant COVID-19 vaccine candidates. The company has a research and development agreement with VTT Technical Research Centre of Finland, Ltd.; strategic research services agreement with Biotechnology Developments for Industry in Pharmaceuticals, S.L.U.; and research collaborations with Jiangsu Hengrui Medicine, Serum Institute of India Pvt., Ltd., and WuXi Biologics. It also has a collaboration with TurtleTree Scientific Pte. Ltd. to develop various recombinant protein growth factors; and a partnership with Medytox, Inc. to co-develop C1 manufactured COVID-19 vaccines and/or boosters. The company was founded in 1979 and is headquartered in Jupiter, Florida.