Gerun Riley was the hired to be a Broad Foundation receptionist. 16 years later she runs the $2.5-billion endowment. : They called the position “office manager,” but it really was the receptionist’s job at the Broad Foundation that Gerun Riley first filled 16 years ago. All this time later, she’s risen to head the foundation, with its $2.5-billion endowment. Where its new leadership could take the mission of a philanthropy that was co-founded and shaped by its retired president, Eli Broad, could change Los Angeles as well as the foundation.