Leadership team
Diane Regas
President and chief executive officer

An internationally recognized conservation leader, Diane Regas joined The Trust for Public Land in the spring of 2018 as president and CEO. Prior to The Trust for Public Land, Diane worked for more than a decade at Environmental Defense Fund (EDF), most recently as executive director, where she helped EDF advance solutions that promote prosperity for all people and for the planet. She guided work to improve ocean health, stabilize the climate, reduce toxins in everyday products, and promote collaboration and partnerships. Prior to EDF, Diane served at the U.S. Environmental Protection Agency, working under both Democratic and Republican administrations as the top civil servant protecting our nation’s rivers, lakes, and...

An internationally recognized conservation leader, Diane Regas joined The Trust for Public Land in the spring of 2018 as president and CEO. Prior to The Trust for Public Land, Diane worked for more than a decade at Environmental Defense Fund (EDF), most recently as executive director, where she helped EDF advance solutions that promote prosperity for all people and for the planet. She guided work to improve ocean health, stabilize the climate, reduce toxins in everyday products, and promote collaboration and partnerships. Prior to EDF, Diane served at the U.S. Environmental Protection Agency, working under both Democratic and Republican administrations as the top civil servant protecting our nation’s rivers, lakes, and bays.

Diane earned her A.B., M.S. in energy and resources, and J.D. at the University of California, Berkeley, and resides in Berkeley, California. An avid outdoor explorer, Diane enjoys hiking, cycling, diving, camping, and spending time in nature with her husband, children, and grandchildren.

"National change starts in our communities,” said Lisa Jackson, administrator of the EPA under President Obama. “Diane’s proven track record and inclusive vision will help communities create vibrant outdoor experiences for millions of people."

D. Malcolm Carson
Senior vice president and general counsel

Malcolm Carson is senior vice president and general counsel for The Trust for Public Land. He joined the organization in 2015. Formerly, Malcolm served as general counsel and policy director for environmental health at Community Health Councils, a health policy-focused nonprofit based in Los Angeles. In addition to the general counsel role, Malcolm led a program centered around environmental and land-use planning with a key focus on the link between access to parks and open space and health.

Prior to this he was managing attorney at the Legal Aid Foundation of Los Angeles, supervising the legal teams for employment and community economic development. In this role he developed expertise in...

Malcolm Carson is senior vice president and general counsel for The Trust for Public Land. He joined the organization in 2015. Formerly, Malcolm served as general counsel and policy director for environmental health at Community Health Councils, a health policy-focused nonprofit based in Los Angeles. In addition to the general counsel role, Malcolm led a program centered around environmental and land-use planning with a key focus on the link between access to parks and open space and health.

Prior to this he was managing attorney at the Legal Aid Foundation of Los Angeles, supervising the legal teams for employment and community economic development. In this role he developed expertise in lobbying, employment law, environmental review, land use, real estate, federal tax exemption, and corporate governance, among others, and led initiatives to leverage land use, transportation, and environmental planning processes for the benefit of low-income communities and to improve client services by better integrating digital communication technology into their collaborative working processes. Additionally, Malcolm taught law and public policy at the University of Southern California, served on the California State Building Standards Commission, and was previously a deputy city attorney for the City and County of San Francisco and an associate at Orrick.

While Malcolm's work over the last twenty years has focused on improving the quality of life in underserved communities, he is passionate about the full range of our work and is an avid surfer, hiker, and bicyclist.

Jeff Danter
Senior vice president of field programs

As the senior vice president of field programs, Jeff is responsible for overseeing all state and area programs including land protection, urban parks development, and community-based conservation. Jeff joined The Trust for Public Land in 2011 and has worked in conservation since 1994. Prior to that he worked for an international electrical engineering company. Jeff received his BS in Chemical Engineering, MBA, and PhD in Ecological Management Communications from The Ohio State University.

As the senior vice president of field programs, Jeff is responsible for overseeing all state and area programs including land protection, urban parks development, and community-based conservation. Jeff joined The Trust for Public Land in 2011 and has worked in conservation since 1994. Prior to that he worked for an international electrical engineering company. Jeff received his BS in Chemical Engineering, MBA, and PhD in Ecological Management Communications from The Ohio State University.

Howard Frumkin
Senior vice president

Dr. Howard Frumkin is Senior Vice President at The Trust for Public Land. He is leading the establishment of an institute at The Trust for Public Land focused on advancing health, climate action, equity, and community, in the context of public land and placemaking.  The institute will assemble evidence and propel that evidence into policy and practice, building on TPL’s longstanding expertise, experience, and partnerships.

Dr. Frumkin is Professor Emeritus of Environmental and Occupational Health Sciences at the University of Washington School of Public Health, where he served as Dean from 2010-2016. From 2005 to 2010 he held leadership roles at the U.S. Centers for Disease Control and Prevention, as...

Dr. Howard Frumkin is Senior Vice President at The Trust for Public Land. He is leading the establishment of an institute at The Trust for Public Land focused on advancing health, climate action, equity, and community, in the context of public land and placemaking.  The institute will assemble evidence and propel that evidence into policy and practice, building on TPL’s longstanding expertise, experience, and partnerships.

Dr. Frumkin is Professor Emeritus of Environmental and Occupational Health Sciences at the University of Washington School of Public Health, where he served as Dean from 2010-2016. From 2005 to 2010 he held leadership roles at the U.S. Centers for Disease Control and Prevention, as director of the National Center for Environmental Health and Agency for Toxic Substances and Disease Registry (NCEH/ATSDR), and as Special Assistant to the CDC Director for Climate Change and Health. He is the author or co-author of over 300 scientific journal articles and chapters, and his books include Making Healthy Places: Designing and Building for Health, Well-being, and Sustainability; Environmental Health: From Global to Local; and two recent books on Planetary Health.

Dr. Frumkin received his AB from Brown University, his MD from the University of Pennsylvania, his MPH and DrPH from Harvard University, his internal medicine training at the Hospital of the University of Pennsylvania and Cambridge Hospital, and his environmental and occupational medicine training at Harvard. A graduate of the Institute for Georgia Environmental Leadership, Dr. Frumkin was named Environmental Professional of the Year by the Georgia Environmental Council in 2004. Dr. Frumkin lives in Seattle, where he is an avid cyclist, paddler, and hiker.  He is married to radio journalist Joanne Silberner and has two children.

Bill Lee
President of The Trust for Public Land Action Fund and senior vice president of policy, advocacy and government relations

Bill Lee is president of The Trust for Public Land Action Fund, and senior vice president of policy, advocacy and government relations for The Trust for Public Land. Bill leads The Trust for Public Land’s strategic direction and implementation for public policy, government relations, and advocacy at the federal, state, and local levels. From 2001-2008, Bill served as legal counsel for the conservation finance team at The Trust for Public Land and, since then, he’s led policy and government relations teams at American Rivers and, most recently, the Campaign for Tobacco Free Kids.

Bill Lee is president of The Trust for Public Land Action Fund, and senior vice president of policy, advocacy and government relations for The Trust for Public Land. Bill leads The Trust for Public Land’s strategic direction and implementation for public policy, government relations, and advocacy at the federal, state, and local levels. From 2001-2008, Bill served as legal counsel for the conservation finance team at The Trust for Public Land and, since then, he’s led policy and government relations teams at American Rivers and, most recently, the Campaign for Tobacco Free Kids.

Jim Obendorf
Senior vice president and chief financial / administrative officer

Jim joined The Trust for Public Land in 2019 having most recently served as the chief operating and chief financial officer at Habitat for Humanity’s largest California affiliate. Prior to his nonprofit stint, Jim held executive level finance and operational leadership roles in both large and small, for-profit organizations including IBM, American President Companies and Southern Pacific. Jim brings extensive experience in the areas of P&L / general management, operations, strategic planning, business development, process reengineering, and systems implementations across diverse industries. In addition, Jim brings specialized experience in public offerings, strategic partnerships, structured debt financing, private equity placements, corporate development, business analysis mergers and acquisitions, project management, and financial...

Jim joined The Trust for Public Land in 2019 having most recently served as the chief operating and chief financial officer at Habitat for Humanity’s largest California affiliate. Prior to his nonprofit stint, Jim held executive level finance and operational leadership roles in both large and small, for-profit organizations including IBM, American President Companies and Southern Pacific. Jim brings extensive experience in the areas of P&L / general management, operations, strategic planning, business development, process reengineering, and systems implementations across diverse industries. In addition, Jim brings specialized experience in public offerings, strategic partnerships, structured debt financing, private equity placements, corporate development, business analysis mergers and acquisitions, project management, and financial and budget controls.

Jim’s educational/professional activities: Named 2015 San Francisco Bay Area Nonprofit CFO of the Year; Lecturer in Entrepreneurial Studies, INSEAD International MBA Program, Singapore; Co-Lecturer, Corporate Finance, San Jose State University; MBA Finance, San Jose State University; BA Economics, San Jose State University; Certified Management Accountant (CMA).

Jim resides with his family in Piedmont, California. Jim’s outdoor passions include cycling, hiking, cross-country skiing, and fly fishing.

I Ling Thompson
Senior vice president and chief marketing and communications officer

I Ling Thompson is the senior vice president and chief marketing and communications officer of The Trust for Public Land. She leads all aspects of marketing and communications to drive the organization’s mission forward. I Ling has dedicated her career to land conservation and fostering people’s love and stewardship of the outdoors. Before joining The Trust for Public Land in August 2019, I Ling spent 14 years with The Nature Conservancy in a number of roles, including managing director of global communications, Women in Nature (WIN) co-sponsor, and deputy to the chief conservation officer. She also led member marketing and communications for the Outdoor Industry Association, where she authored the...

I Ling Thompson is the senior vice president and chief marketing and communications officer of The Trust for Public Land. She leads all aspects of marketing and communications to drive the organization’s mission forward. I Ling has dedicated her career to land conservation and fostering people’s love and stewardship of the outdoors. Before joining The Trust for Public Land in August 2019, I Ling spent 14 years with The Nature Conservancy in a number of roles, including managing director of global communications, Women in Nature (WIN) co-sponsor, and deputy to the chief conservation officer. She also led member marketing and communications for the Outdoor Industry Association, where she authored the Outdoor Recreation Economy report and designed a “big tent” communications campaign to elevate the economic importance of outdoor recreation.

As a member of the Theodore Roosevelt Conservation Partnership Board of Directors, she helps guide that organization’s work to guarantee all Americans quality places to hunt and fish. I Ling knows from experience that a powerful message can make transformational change. In her early career, she shaped major campaigns for international public relations agencies on public health issues like diabetes prevention and the anti-tobacco movement. She lives in Denver with her husband and their dog Blink.

Lindi von Mutius
Director of board operations and strategy

Lindi von Mutius is the director of board operations and strategy at The Trust for Public Land. In that role, she works closely with the board of directors, the CEO, and staff across the organization. Connecting people to the outdoors has always been a passion for Lindi, starting with a high school internship with former Senator John Kerry (D-MA), which got her working on the East Coast Greenway—a 3,000-mile biking and walking route linking major east coast cities from Calais, Maine, to Key West, Florida. 

After graduating from Phillips Exeter Academy, Lindi attended Williams College, where she was a Mellon Fellow and earned a B.A. in History and a concentration...

Lindi von Mutius is the director of board operations and strategy at The Trust for Public Land. In that role, she works closely with the board of directors, the CEO, and staff across the organization. Connecting people to the outdoors has always been a passion for Lindi, starting with a high school internship with former Senator John Kerry (D-MA), which got her working on the East Coast Greenway—a 3,000-mile biking and walking route linking major east coast cities from Calais, Maine, to Key West, Florida. 

After graduating from Phillips Exeter Academy, Lindi attended Williams College, where she was a Mellon Fellow and earned a B.A. in History and a concentration in Environmental Studies, with honors. After working as a liaison for two World Bank Mediterranean Environmental Technology Assistance Program funded projects in Cairo, Egypt, Lindi returned to the U.S. to complete an A.L.M. in Environmental Management at Harvard University, magna cum laude, and then graduated from Vermont Law School where she received the Black Law Students Association Award for Distinguished Service and the award for Excellence in Appellate Advocacy. 

Lindi worked in bankruptcy, environmental, real estate, and corporate litigation for Flaster Greenberg, P.C. and Fox Rothschild, LLP, and co-founded a legal clinic serving homeless veterans in New Jersey. Switching from litigation to lobbying, Lindi ran government affairs in Philadelphia and Washington, DC, for sub-agencies of the German Federal Ministry of Economics and Energy. There, her focus was on clean energy tax credits, trade policy, and energy policy. Chasing her passion for environmental work to the non-profits, Lindi worked as the director of program management at the Environmental Defense Fund and as the chief of staff of the Sierra Club. Being at The Trust for Public Land feels like coming full circle: working to ensure that public land benefits all people. 

Lindi teaches two courses as an adjunct at the Harvard Division of Continuing Education: Environmental Justice in Practice and Introduction to Sustainability Science. Her research interests include environmental history and studying how land use law and policy can undo systemic and environmental racism. Lindi serves on the Boards of the People for the American Way and the Environmental Leadership Program. In her free time, Lindi enjoys kayaking and hiking with her dog. She was born in Essen, Germany, and speaks German fluently.

Patricia Watson
Senior vice president, chief philanthropy officer

As chief philanthropy officer, Pat is responsible for implementing and leading the expansion of a comprehensive strategic, creative, and entrepreneurial development program that affirms and celebrates The Trust for Public Land’s mission and impact and sustains our future growth. 

Pat has an extensive and diverse fundraising background, having served in several senior positions throughout her career. Before joining The Trust for Public Land, Pat was senior vice president of executive practice at Grenzebach Glier and Associates, where she provided senior-level counsel on fundraising growth strategies, campaign planning, and execution frameworks, major and principal gift development, and organizational and operational expertise. Prior to that, Pat served as the senior vice president...

As chief philanthropy officer, Pat is responsible for implementing and leading the expansion of a comprehensive strategic, creative, and entrepreneurial development program that affirms and celebrates The Trust for Public Land’s mission and impact and sustains our future growth. 

Pat has an extensive and diverse fundraising background, having served in several senior positions throughout her career. Before joining The Trust for Public Land, Pat was senior vice president of executive practice at Grenzebach Glier and Associates, where she provided senior-level counsel on fundraising growth strategies, campaign planning, and execution frameworks, major and principal gift development, and organizational and operational expertise. Prior to that, Pat served as the senior vice president of advancement at Brown University and senior associate vice president for alumni affairs and development at Cornell University. 

She brings a personal commitment to our mission, spending a great deal of her time outside of work exploring urban and coastal parks near her home in Providence, Rhode Island.  An active rower and avid fly fisher, Pat spends as much time as possible on the water. She also volunteers her time on the Board of Governors of the Narragansett Boat Club and as a member of the American Museum of Fly Fishing Board of Directors.

Pat holds a M.A. in Public Administration from the Maxwell School of Citizenship and Public Affairs at Syracuse University and a B.S. in Design and Environmental Analysis from Cornell University.