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Dave Raetz

Vice President & Chief Administration Officer

Dave Raetz

Dave is responsible for strategic planning and project management for multiple departments. 

Dave began working with the Irvine Ranch Conservancy first as senior manager, then director; now as the Chief Administration Officer, he oversees the administration of the Conservancy’s budget and the management and evaluation of staff, volunteers, and public programs. Dave directs and participates in the regional publicity for the organization and its various programs. In addition, he establishes and maintains community partnerships and partnership programs. Before coming to the Conservancy, Dave spent 13 years in a number of positions with Inside the Outdoors, Orange County Schools’ award-winning environmental education program, most recently as manager of school and field programs. Dave has overseen the naturalist program for ITO and been a leader in the development of programs, outreach, fundraising, and strategic planning for the organization. He has also served as a field naturalist and educator. Dave has a bachelor’s degree in business administration from the University of Phoenix.

Senior Leadership Team

Michael O'Connell

Michael O’Connell

President & Chief Executive Officer
Sherry Fuller

Sherry Fuller

Senior Director, Human Resources Management
Nathan Gregory, Ph.D.

Nathan Gregory, Ph.D.

Senior Vice President & Chief Programs Officer
Adam Maywhort

Adam Maywhort

Director, Planning & Infrastructure

Board of Directors

Irvine Ranch Conservancy is a California non-profit organization.

It was founded in 2005 to help care for the tens of thousands of open space acres preserved in public ownership on the historic Irvine Ranch. The Conservancy works with landowners such as OC Parks, City of Irvine and City of Newport Beach to preserve and restore these lands and help people enjoy them. The Conservancy has an independent board of directors overseeing its strategy and operations.


Geoff Barnard
Retired Senior VP, The Nature Conservancy;
Former President, Grand Canyon Trust;
Consultant in non-profit strategy and management

Vice Chair
Ann Muscat, Ph.D.
Retired President and CEO,
Catalina Island Conservancy

Dave Doran, CPA
Retired Managing Partner
​White Nelson Diehl Evans LLP,
Member of AICPA, CSCPA

Nikki Buffa
Counsel, Latham & Watkins, LLP
Former Deputy Chief of Staff,
US Department of Interior

Assistant Secretary
Ken Kramer
Retired Superintendent,
​Orange Coast District, CA State Parks

Past Chairman
Albert F. Bennett, Ph.D.
Dean Emeritus, School of Biological Sciences,
University of California Irvine

Michael O’Connell
CEO, Irvine Ranch Conservancy


Patrick Bradley
President, Southern Pacific Region,
Whole Foods Market

Bill Campbell
OC Businessman, Former County Supervisor, and Former State Assemblyman

Jane Russo
Retired Superintendent,
Santa Ana School District

Sharon Farrell
Executive Vice President of Programs, Stewardship, and Science,
Golden Gate National Parks Conservancy

David Szymanski
Superintendent, Santa Monica Mountains National Recreation Area,
US National Park Service

Contact Us

Looking for another member of our team? Visit our contact page for a full list of Irvine Ranch Conservancy departments and staff.

To contact members of the Board of Directors, please call the Administrative Specialist at 714-508-4756 or email