Hartmann is the Director of Development and Production and Head of Television at White Horse Pictures. Prior to joining White Horse, Cassidy worked in development at The Allegiance Theater, the production company founded by Oscar-nominated producer Daniel Dubiecki (Up in the Air, Juno, Thank You For Smoking). Cassidy began her career as a journalist for the Philadelphia Weekly, and was the Pennsylvania reporter for MTV’s ‘Choose or Lose’ Street Team, part of the network’s Emmy-winning “Think” campaign. She graduated magna cum laude from the University of Pennsylvania and holds an M.F.A. from the Peter Stark Producing Program at the University of Southern California.