OptiNose, Inc., a specialty pharmaceutical company, focuses on the development and commercialization of products for patients treated by ear, nose, and throat; and allergy specialists in the United States. The company offers XHANCE, a therapeutic product utilizing its proprietary optinose exhalation delivery system that delivers a topically-acting and anti-inflammatory corticosteroid for the treatment of chronic rhinosinusitis with and without nasal polyps. It is also developing XHANCE, which is in Phase IIIb clinical trial for the treatment of chronic sinusitis; and OPN-300 for the treatment of Prader-Willi syndrome, a rare genetic obesity disorder, as well as autism spectrum disorder.