Dr. Greenhawt joined Aquestive in March 2026. Prior to his current position, Dr. Greenhawt served as Chief Medical Officer of the Asthma and Allergy Foundation of America (AAFA), advancing research initiatives and providing medical and scientific leadership across its educational, advocacy, and policy programs. Prior to AAFA, he was Professor of Pediatrics at Children s Hospital Colorado and the University of Colorado School of Medicine, where he directed the Food Challenge and Research Unit. He previously co-founded and co-directed the Pediatric Combined Eosinophilic Esophagitis Clinic and served as Research Director of the University of Michigan Food Allergy Center. Dr. Greenhawt holds an M.D., MBA, and MSc and a B.A. He serves on multiple committees within the American Academy of Allergy, Asthma & Immunology (AAAAI) and the European Academy of Allergy and Clinical Immunology (EAACI) and is a past chair of the American College of Allergy, Asthma & Immunology (ACAAI) Food Allergy Committee.