The Thomas A. Wadden Award for Distinguished Mentorship honors a mid-career or senior TOS member for distinguished mentorship of the Society's members who were in their early careers at the time of the mentoring relationship. The award is named for Professor Thomas Wadden, PhD, of the Perelman School of Medicine at the University of Pennsylvania, who for more than 30 years has mentored dozens of scientist-practitioners who have pursued successful careers in obesity research and clinical care. The award was created in 2015 with a generous endowment from multiple contributors, comprised primarily of Dr. Wadden’s prior mentees. Former mentee, Adam Gilden Tsai, MD led the effort. The endowment funds a plaque and $1000 cash award each year. The award is presented as part of the Ethan Sims Presentations at ObesityWeek, where the nominating mentee presents their submission, followed by brief acceptance remarks by the recipient.