Aridis Pharmaceuticals, Inc. is a biopharmaceutical company focused on the discovery and development of targeted immunotherapy using fully human monoclonal antibodies (mAbs), to treat infections. mAbs represents treatment approach that enables the human immune system to fight infections and are designed to overcome the deficiencies associated with current therapies, such as rise in drug resistance, short duration of response, negative impact on the human microbiome, and lack of differentiation among the treatment alternatives. Its product pipeline comprises of human mAbs targeting specific pathogens associated with bacterial infections, primarily hospital-acquired pneumonia (HAP), and ventilator-associated pneumonia (VAP). Its lead product candidate, AR-301 targets the alpha toxin produced by gram-positive bacteria Staphylococcus aureus, a common pathogen associated with HAP and VAP. Its AR-101 (Aerumab) is a fully human immunoglobulin M, mAb targeting P. aeruginosa serotype O11.