Mark Tercek at Dangermond Preserve
Mark Tercek at the Jack and Laura Dangermond Preserve © Brandon Flint


Mark R. Tercek to Step Down as CEO of The Nature Conservancy

The Nature Conservancy’s Chief Executive Officer, Mark R. Tercek, announced today that he plans to transition out of his role after an 11-year tenure as head of the global conservation organization. He will continue leading the organization while the Board of Directors searches for his successor.

“The Board of Directors and I are extremely sorry that Mark plans to resign as CEO, but we fully support his personal decision to move on to the next phase of his career,” said Board Chair Tom Tierney. “Mark has been a tremendous champion for our mission, building on The Nature Conservancy’s strengths to help create a more innovative, global, and impactful organization. Thanks to his leadership and commitment, TNC will continue to accelerate and scale our important work addressing the planet’s biggest challenges. While we continue to execute on our global mission, we also recognize the importance of self-reflection and the need to continuously improve our culture. Doing so will be an important part of our leadership team’s focus going forward.”

“It’s been an honor to lead this great organization and its world-class team,” said Tercek. “In my view, it’s the right time for The Nature Conservancy’s next leader to step up to amplify the momentum we’ve built over the past decade. I am enormously grateful to the Board, our volunteer leaders, our donors, and my colleagues for their support, their passion for our mission, and for all that we have accomplished together for the good of our planet.”  

Tercek joined The Nature Conservancy in 2008. He led the organization through the economic crisis of that year, successfully implementing an ambitious plan to strengthen TNC’s financial discipline as well as its strategic focus. During Tercek’s tenure, the organization aligned around an ambitious global conservation agenda, introduced innovative new approaches to conservation finance, expanded into new geographies, launched a cities program, developed new science collaborations, and significantly elevated and expanded its work to address climate change.

The Nature Conservancy, which works in all 50 U.S. states and 72 countries, is currently in the final stages of its historic $7 billion Our World Campaign, which aims to build unprecedented support for efforts to protect lands and waters, tackle climate change, provide food and water sustainably, and build healthy cities.

The Nature Conservancy is a global conservation organization dedicated to conserving the lands and waters on which all life depends. Guided by science, we create innovative, on-the-ground solutions to our world's toughest challenges so that nature and people can thrive together. We are tackling climate change, conserving lands, waters and oceans at an unprecedented scale, providing food and water sustainably and helping make cities more sustainable. Working in 72 countries and territories: 38 by direct conservation impact and 34 through partners, we use a collaborative approach that engages local communities, governments, the private sector, and other partners. To learn more, visit or follow @nature_press on Twitter.