Aridis Pharmaceuticals, Inc. engages in the discovery and development of targeted immunotherapy using human monoclonal antibodies, or mAbs, to treat infections. The company is headquartered in Los Gatos, California and currently employs 37 full-time employees. The company went IPO on 2018-08-14. The firm is focused on the discovery and development of targeted immunotherapy using fully human monoclonal antibodies (mAbs) to treat life-threatening infections. The firm's product pipeline is comprised of fully human mAbs targeting specific pathogens associated with life-threatening bacterial and viral infections, primarily hospital-acquired pneumonia (HAP), ventilator-associated pneumonia (VAP), and cystic fibrosis. The firm's lead product candidates, AR-301 and AR-320, target the alpha toxin produced by the gram-positive bacteria Staphylococcus aureus (S. aureus), a common pathogen associated with HAP and VAP. The Company’s clinical development activities are primarily focused on AR-301, AR-320, and AR-501. Its MabIgX and lPEX discovery platforms enable the Company to rapidly screen, identify, and optimize fully human therapeutic mAb product candidates directly from the B-cells of patients.