Mr. Castilleja served for more than five years at the helm of the foundation’s Environmental Conservation Program, leading its efforts to protect critical ecosystems and balance long-term conservation with sustainable use. Mr. Castilleja has also worked for World Wildlife Fund-International (WWF), most recently as executive director for conservation. He was also the chair of the steering committee for the Global Alliance for the Future of Food, a coalition of foundations dedicated to improving the sustainability, security and equity food systems.