Ascendis Pharma A/S is a biopharmaceutical company, which engages in the development of drug candidates. It specializes on its TransCon technologies to create prodrugs that provide for the predictable and sustained release of an unmodified parent drug. The company was founded by Jan Moller Mikkelsen, Dirk Vetter, and Harald Rau in September 2006 and is headquartered in Hellerup, Denmark.