Board

Artemisa is a longtime advocate of natural resource conservation, and holds a PhD in marine and fisheries science. She has spent the past 25 years working on socio-environmental justice projects, leading a local NGO and working with indigenous and fishers’ communities in the northwest of Mexico. She is one of the founders of Global Greengrants’ sister fund, Fondo Acción Solidaria, AC a fund that promotes a just, equitable, and participatory society in Mexico through natural, cultural, and social heritage conservation. Artemisa has been an Independent Voting Member since April 2018.

Marie Florence Dageville is the Co-founder of The Patchwork Collective—a family philanthropic effort that funds innovative organizations tackling inequalities in the human condition, in particular those with locally-led programs developed in close collaboration with the communities affected. Before founding TPC, she was a hospice nurse working with fragile patient populations in San Francisco. This experience informed how she wants to leverage TPC to facilitate positive outcomes for individuals most adversely affected by socioeconomic and environmental stressors. A passion of hers is exploring how the philanthropic community can be redefined and energized through evangelizing trust-based, proximate partnerships. In her spare time she loves to create through mosaics and is an avid skier and diver—splitting her time between California and Hawaii.

Roger-Mark De Souza is vice president for environment at The Pew Charitable Trusts. In this role, he helps shape and lead a portfolio that works to conserve ecosystems and address critical threats to people and nature, including climate change and biodiversity loss. De Souza joined Pew with more than 30 years of experience driving innovation and building social, economic, health, and environmental projects around the world, with a focus on empowering local communities. His work combines strategic insight with public and private partnerships to achieve scalable solutions for complex challenges facing the environment. De Souza’s extensive U.S. and international experience includes influencing policy change in a nonpartisan manner, cultivating relationships with partners and donors, and co-developing large-scale initiatives. Throughout his career, De Souza has served in senior leadership positions across multiple organizations. Most recently, he was the vice president of sustainable markets at Pact. His previous roles include chief movement building officer at Amnesty International-USA, president and chief executive officer of Sister Cities International, and director of global sustainability and resilience at The Woodrow Wilson Center. De Souza has also served in organizations such as Population Action International, Sierra Club, Population Reference Bureau, and World Resources Institute. De Souza holds a bachelor’s degree in French and Spanish and a postgraduate degree in international relations from the University of the West Indies in Trinidad and Tobago and a master’s degree in international development policy from The George Washington University. Outside his professional life, he thrives on his Caribbean heritage, loves to cook, is an avid traveler, and enjoys the outdoors with his wife, sons, and rescue dogs. His pronouns are he/him/his. Roger-Mark De Souza has been an Independent Voting Member since October 2022.

Sue Dorsey, iAlumbra's COO since January 2024, brings over 25 years of experience in nonprofit management, international development, finance, and impact investing. Previously, she served nearly eight years at the Gates Family Foundation as Senior VP, overseeing finance, administration, and impact investing. At Gates, Sue built out the impact investing program and managed various functions, including accounting and governance. Prior to that, she spent seven years as CFO at Water for People and 12 years as Executive Director at Friendship Bridge. Sue holds an MBA from Yale University and a bachelor’s degree in finance from the University of Vermont. She was also an adjunct professor at the Josef Korbel School for International Studies at the University of Denver. Sue, married with three kids, enjoys outdoor activities like running and skiing in Colorado.

Shannon is Program Director of the Civil Society program at the Charles Stewart Mott Foundation. She oversees Mott’s Civil Society program. Since joining the foundation in 1995, Shannon has served as a program officer, focusing on Russia and Ukraine, and as the Regional Director for the foundation’s work in Central and Eastern Europe/Russia. Prior to joining the foundation, Shannon was the International Program Director at the Olga Havel Foundation in Prague, where she coordinated international assistance programs to help people with disabilities and chronic illnesses in the Czech Republic and Slovakia. Shannon has been an Independent Voting Member since November 2013.

Rose Longhurst is the Unit Manager for Democratic Renewal in the Open Society Europe and Central Asia Programme, leading the work on democratic innovation in Europe. Prior to this she was involved in FundAction, The Edge Fund, and the EDGE Funders Alliance, and worked for nonprofits including Womankind Worldwide and Bond. She is a trained yoga teacher and facilitator and is a Senior Atlantic Fellow for Social and Economic Equity at LSE.

Josh Mailman is Founder and Managing Director of Serious Change L.P., a sole L.P. impact investment vehicle started in 2009. He serves on the board of the following companies: Social Imprints; BenefitHub; Jaguar Health; and the following non-profits - Global Greengrants Fund, the Mailman School of Public Health, Echoing Green, the Sigrid Rausing Trust U.K., and the Threshold Foundation. He was a co-founder of the Fund for Global Human Rights in 1992, and is a former board member of Human Rights Watch. Josh Mailman founded Social Venture Network (now Social Venture Circle) with Wayne Silby of Calvert Group in 1987. He also co-founded the Threshold Foundation (1981) and Business for Social Responsibility (1992).

Nathan Metenier (he/they) is a climate justice and LGBTQI2S+ advocate. He is the co-Director of the Youth Climate Justice Fund, a movement-accountable fund supporting youth-led socio-environmental solutions globally. As a former member of the UN Secretary-General’s Youth Advisory Group on Climate Change (2020-2023), Nathan has been at the forefront of several climate advocacy moments. He is the founder of Generation Climate Europe, the largest coalition of youth-led networks on climate and environmental issues at the European level. Nathan serves on the boards and advisory councils of various leading organizations, including Goals House, INGKA group, Ørsted, and Environment Funders Canada. He is a fellow of the 776 Foundation and the US Environmental Grantmakers Association and was also the co-chair of the youth pre-COP26.

Katherine Pease is Managing Director at Pathstone. She has worked with foundations, investors and nonprofit organizations for more than 20 years, most recently as the principal of KP Advisors, a Colorado-based firm that worked with foundations, nonprofits and investors. Previously Katherine served as the executive director of the Gill Foundation and as Senior Vice President for Philanthropic Investments and Policy at Gary Community Investments/Piton Foundation. She has also been a member of Cornerstone’s Global Advisory Council. Katherine regularly speaks about the intersection of impact investing and social equity and has written about the subject extensively. She earned her Bachelor of Arts from The Colorado College and her Master's in Public Administration from The University of Colorado, where she is also a Lecturer in the School of Public Affairs. Katherine Pease has been an Independent Voting Member since July 2013.

Bobby Peek is Director of groundWork, Friends of the Earth, South Africa. He grew up on the fenceline of south Durban’s Engen oil refinery, co–founded the South Durban Community Environmental Alliance, was national campaigns coordinator for the Environmental Justice Networking Forum, and in 1998 received the Goldman Environmental Prize for Africa. He was on South Africa’s first National Environmental Advisory Committee to the South African Minister of Environment. From 2008 to 2012 he was on the international executive committee of Friends of the Earth International. At Global Greengrants Fund, Bobby has been an advisor for the Southern Africa Advisory Board since 2002, and he served as a member of the Strategic Planning Committee from 2016-2017. He advises on various national and international environmental justice strategies. He has received an honourary PhD from the Durban University of Technology. Bobby has been an Independent Voting Member since April 2018.

Kavita N. Ramdas is a globally recognized advocate for gender equity and justice. She is currently a Richard von Weisäcker Fellow of the Bosch Academy in Berlin, Germany. Her research looks at the adoption of feminist foreign policy in Germany as well as other European countries and its impact on domestic politics in Europe as well as engagement with the rest of the world. Kavita recently completed a term as the Activist in Residence at the Global Fund for Women and a semester as a visiting professor at Princeton University’s School of Public and International Affairs (SPIA). Kavita is a speaker and thought commentator on the challenges facing philanthropy and civil society as they seek to advance goals of equitable, sustainable, and gender just development. She provides high-level consulting advice and guidance on initiatives to defend democracy and protect human rights both within the US and across the globe. In 2023, Kavita served as a senior advisor to an independent assessment of the United Nations ability to deliver on Gender Equality as part of the Sustainable Development Goals. During her tenure as Director of the Women’s Rights Program at the Open Society Foundations, the foundation made its largest ever investment in gender justice with a $100 million commitment to the Generation Equality Forum in July 2021. She is the former President and CEO of the Global Fund for Women and has served as Senior Advisor on Global Strategy to Darren Walker, President of the Ford Foundation, and was the foundation’s Representative in its South Asia office in Delhi, India. Kavita is the Principal of KNR Sisters, a consulting venture to support social justice movements and philanthropy.

Tulika’s work includes rural women at the very grassroots--from undertaking litigation for individuals and groups of individuals; to negotiating international procedural treaties, supporting implementation of substantive treaties; and most recently, understanding--and challenging the linkages between resources and power, particularly in the context of shrinking civil spaces and organizing for women and trans* human rights are concerned. Her work spans local to global realities, and her capacities include working in a range of contexts. Her positioning is global and brings together diverse perspectives, as global movements for rights are based in regional voices and national realities.

Lauren is a manager at a professional services organisation, working exclusively with international bilateral and multilateral donors and grant-giving charitable foundations. She is a qualified chartered accountant, and her work involves overseeing the provision of assurance work over grant funding, capacity building of key partners, and forensic investigations across the world. Lauren is currently completing a graduate diploma in international development and development economics with the University of London (LSE). She is committed to supporting initiatives to reduce inequalities and provide agency to local communities in the sphere of development and humanitarian funding. Lauren Stevenson has been an Independent Voting Member since October 2022.