Antares Pharma, Inc. (Antares) is a specialty pharmaceutical company that focuses on developing and commercializing self-administered parenteral pharmaceutical products and technologies. The Company develops and manufactures pressure-assisted injector devices, with and without needles, which allow patients to self-inject drugs. The Company's subcutaneous injection technology platforms include VIBEX disposable pressure-assisted auto injectors, Vision reusable needle-free injectors and disposable multi-use pen injectors. The Company operates through drug delivery segment, which includes self-administered parenteral pharmaceutical products and technologies. The Company has developed OTREXUP (methotrexate) injection, which is a single dose, disposable auto injector.