The Gordon and Betty Moore Foundation announced today the appointment of Dr. Guillermo Castilleja as Chief Program Officer for the Foundation's Environmental Conservation program, effective January 15, 2010.

Castilleja will oversee, direct, and manage the Foundation’s Environmental Conservation program.  He will report directly to Steve McCormick, the Foundation's President and a Trustee of the Board.

“Guillermo comes to the Foundation with proven management skills and vast experience in nature conservation,” said McCormick. “His background, leadership, and vision will be vital assets in directing our resources to support high impact environmental research and conservation efforts. We are thrilled to welcome him to the Foundation.”

In accepting the position, Castilleja said, “the Foundation has emerged as the philanthropic sector’s single largest private funder of environmental conservation. Even in the organization’s short history, it has already supported grantees in achieving extraordinary conservation results. I am honored to join the team, to do what I can to realize the Moores’ vision of large-scale, long-term, positive outcomes for future generations."

Dr. Castilleja’s background in environmental science and conservation has given him extensive experience in the design and implementation of field projects, capacity building, partnerships, fundraising, and conservation finance. He has led the development of conservation institutions and large-scale conservation efforts around the world.

Most recently, Castilleja oversaw and coordinated World Wildlife Fund’s global conservation efforts, leading the development of global priorities for the network, overseeing implementation of its activities, and monitoring progress and assessing impact. Castilleja came to WWF International in 2006 after serving as Senior Vice President for Field Programs for World Wildlife Fund in Washington, DC. Prior to that, he was the Vice President and Regional Director for the Latin America and Caribbean Secretariat. Castilleja was the representative of WWF in Mexico for six years, where he led the development of one of the largest field programs in the WWF network. Before joining WWF in 1991, he worked for the World Bank and the National Wildlife Federation. 

Castilleja graduated from the National University of Mexico (1980), and received a master’s degree in forestry (1983), a master’s degree in philosophy (1985), and a doctorate in forest ecology (1991) from Yale University.

About the Gordon and Betty Moore Foundation

The Gordon and Betty Moore Foundation, established in 2000, seeks to advance environmental conservation and scientific research around the world and improve the quality of life in the San Francisco Bay Area. The goal of the Foundation’s Environmental Conservation Program is to change the ways in which people use important terrestrial and coastal marine ecosystems to conserve critical ecological systems and functions, while allowing sustainable use.  For more information, please visit



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