Justin is a climate and biodiversity leader with over 25 years of experience across the private sector, finance, and civil society, including roles as Partner at Just Climate and Executive Director of the Tropical Forest Alliance. Recognised with an OBE for his contributions at COP26, Justin believes a radically new approach is essential. He founded Ostara with a conviction in our collective ability to innovate and dream ‘unreasonably large dreams,’ reimagining a very different future to address the increasingly complex challenges we face today.

Nicole is a policy leader, systems change expert and author with more than 20 years experience in building communities and facilitating processes for collective action. Prior to joining Ostara, she co-headed the Nature Pillar at the World Economic Forum and advised forest and ocean conservation non-profits including National Geographic Society’s Campaign for Nature. She chairs the Forum of Young Global Leaders, and co-founded EDGE Certified Foundation — a business certification standard for gender equality in the workplace. 

Colin is a Founding Partner of Generation Investment Management, a dedicated sustainable investment firm launched in 2004 by seven partners, including Former Vice President Al Gore as Chairman and David Blood as Senior Partner. Colin is Head of Generation’s San Francisco Office. Generation manages approximately $45 billion on behalf of primarily institutional investors to achieve their vision of a sustainable world. He also serves as Vice-Chair of Generation’s Just Climate business and as a member of the Board of Directors of the Ocean Conservancy.

Petra is a recognised leader in sustainability and food system transformation, specialising in agricultural value chains with knowledge of palm oil, tea, coffee, cocoa and spices. She is the former Director of Private Sector Engagement and Strategic Partnerships for the Tropical Forest Alliance and brings expertise in multi-stakeholder partnerships and mobilising collective action. Petra holds a deep-rooted belief in the necessity of dialogue and collaboration: “without it we will not succeed.”

Mark brings over two decades of leadership experience in energy, environmental and investment, including as Director of Market Transformation and Global Fisheries at The Nature Conservancy. He is an expert in regenerative food systems and co-founder of Pacific Island Tuna, whose mission is to revolutionize the tuna fishing industry to deliver economic, social and environmental value to people and planet. In his spare time, you can find Mark playing in the mountains surrounding Lake Tahoe with his wife, kids and over-sized dog.

Bekah brings 20 years experience in founding and supporting environmental initiatives, with a deep passion for projects that bring people closer to nature, themselves and each other. From advising on policy at Green Alliance, to creating social enterprises, and producing community and theatrical events — Bekah’s approach combines a love of creativity, adventure and fun with a belief in the power of reconnection with the more-than-human world.