We Are

Over the past two decades since Dalberg was established, our group of mission-led enterprises has partnered with and served communities, governments, foundations, non-profits, multilaterals and companies to build a more sustainable and inclusive world.  Through this work, it became clear that our unique perspectives, skills, and decades of experience, expertise, and relationships could be extended to build broader solutions that proactively address some of the world’s most important and urgent challenges through systemic change.

Dalberg Catalyst aims to bring to life a portfolio of new solutions and multi-stakeholder initiatives to meet this goal. While we are independent from the businesses in the Dalberg Group, we build upon 20 years of Dalberg’s expertise, knowledge, networks, and skills to proactively and co-creatively shape, design and deliver solutions from start to finish.

Our Story


Originally set up by the Dalberg Trust – the non-profit custodian of the Dalberg mission – with an innovation grant in 2020, Dalberg Catalyst functions as an independent entity funded entirely by donors. This allows us to take on a more proactive role in identifying and bringing to life multi-stakeholder solutions to address some of the world’s most pressing problems. We rely on the support of like-minded partners who share our values and are excited to create agenda-shaping, collaborative action that leads to meaningful, systemic, and lasting changes in the world.

We also benefit from the contributions of global citizens like you. Your support can help us prevent the next pandemic, increase vaccine equity, and pave the way for a forest-friendly economy.

Our People

Board of Directors

Initiative Leads

Henrik Skovby

Chairman of the Board and Founder & Chairman, Dalberg Group

Sonila Cook

CEO, Dalberg Catalyst

Dan Tuttle

Director of Health, Stupski Foundation

Mariah Levin

Senior Advisor, Forum Foundations, World Economic Forum

Leadership Team

Sonila is CEO of Dalberg Catalyst, and a member of Dalberg’s Board of Trustees. 

Prior to her role at Dalberg Catalyst, she was a Partner at Dalberg Advisors. She joined Dalberg’s founding team in 2003 and played critical roles in the early growth of the Firm, including establishing the firm’s Energy and Environment Practice, and serving as the Director of the New York office.

Sonila has advised leading foundations, international organizations, governments, companies, and nonprofits on strategies to enhance their impact on some of the world’s most pressing global challenges. Her clients have included the Rockefeller Foundation, New York City Government, Human Rights Watch, UNDP, Swiss Re, Unilever, and the Global Fund to End Modern Slavery.
Prior to joining Dalberg, Sonila worked for McKinsey & Company. She holds an MBA from Columbia University and an undergraduate degree in Economics from Harvard University. She has spoken at various fora including the World Economic Forum and the Council on Foreign Relations, and her perspectives have appeared in publications such as The Guardian and The Economist.
Sonila Cook

Chief Executive Officer

Robyn is the Director of Special Projects, and is an experienced program manager and strategic advisor. Robyn joined Dalberg Catalyst after working across many Dalberg entities. She started at Dalberg Advisors, where she honed her consulting toolkit in issues of job creation and clean energy in the Global South, before moving to Dalberg Implement, where she developed her implementation skills and grew into a program manager, coordination across multi-sectoral, global teams. She also spent 2 years with the Dalberg Trust, where she focused on values-based governance; diversity, equity and inclusion; and innovation. 

Robyn has a Honours degree in Mechanical Engineering from the University of Pretoria, where she is currently completing her Masters degree.
Robyn van den Heuvel

Director of Special Projects

Leslie Park is the General Counsel of Dalberg Catalyst, where she oversees all of the organization’s legal matters.  She has 20 years of experience advising non-profit organizations.  Prior to joining Dalberg Catalyst, Leslie served for a decade as the General Counsel of the Rainforest Alliance, an international environmental NGO.  Leslie began her career in private law firm practice, specializing in tax-exempt organizations. 

Leslie graduated from Yale University with a B.A. in History and from NYU School of Law with a J.D. and LL.M in Taxation.
Leslie Park

General Counsel

Nigel Sizer is the executive director of the Preventing Pandemics at the Source initiative with Dalberg Catalyst. Previously, he was president of Rainforest Alliance, global director of the Forests Program at the World Resources Institute, where he launched Global Forest Watch and the Global Restoration Initiative.  He was also vice president for Asia-Pacific with Rare, pioneering community-based fisheries conservation efforts. In 2008, he was lead advisor on climate change and energy issues in Asia to former US President Bill Clinton. 

He has worked with the United Nations Environment Program and established The Nature Conservancy’s Asia-Pacific Forest Program. A globally recognized authority on forests, ecology, climate change and development policy, he has appeared frequently in the media including with the BBC, CNN, Al-Jazeera, and The Guardian.  Nigel has degrees in natural sciences and tropical ecology from the University of Cambridge. He is based in the United States and lived for 15 years in Brazil, Kenya, and Indonesia.
Nigel Sizer

Executive Director, Preventing Pandemics at the Source,
Senior Advisor

Jo is Director of [TBD] and an experienced program manager and strategic advisor in the social impact, humanitarian and environmental sectors. Jo joined Dalberg Catalyst from Dalberg Advisors where she led teams advising clients on strategy and organizational transformation. Clients include BMGF, WWF International, the UN Secretariat, WHO, and other UN entities. Previously with the Tony Blair Africa Governance Initiative and Dalberg Implement, she worked as an embedded advisor to several African governments on implementing responses to complex challenges including the West Africa Ebola outbreak, private sector development, and government delivery. She also worked in campaigns and advocacy with Oxfam GB in Pakistan.

Jo holds a first class degree in Politics, Philosophy and Economics from the University of Oxford.
Jo Evans

Director of Incubation Strategy and Operations

Aaron is the Program Manager for the Sharing Strategies and Uncommon Collaborations initiatives. He joined Dalberg Catalyst from Dalberg Advisors and has over a decade of strategy and global development consulting experience with a variety of clients, including multinational corporations, foundations, NGOs, governments, and international organizations.

Prior to Dalberg, Aaron was an Associate Director at FSG, a leading social impact consulting firm; worked as an Engagement Manager at McKinsey; and helped build and run an HIV/AIDS clinic with the Clinton Health Access Initiative (CHAI) in rural Mozambique. Aaron has lived and worked extensively in Sub-Saharan Africa and Latin America and has traveled to over 70 countries. He is fluent in Portuguese, Spanish, and French.

Aaron holds an MBA from the Tuck School of Business at Dartmouth College, a Master’s in International Development from the Johns Hopkins School of Advanced International Studies (SAIS), and a BA, magna cum laude, in Government from Harvard College.
Aaron Mihaly

Program Manager, Sharing Strategies and Uncommon Collaborations initiatives


Initiative Leads

Jamie Drummond is a serial advocacy entrepreneur who was global strategist for Jubilee 2000 Drop the Debt and co-founded and – which went on to help cancel over $100b in developing country debt and drive a deal to double smart aid for African nations along with trade and transparency improvements. He has helped drive advocacy strategies that have raised 100s of billions for global health in particularly helping ensure access to ARVs, anti-malarial medications, vaccines and other key interventions are more equitably shared in the poorest communities. 

With a white label platform called “Sharing Strategies” he is currently working with major foundations, MDBs, think tanks, IOs and CSO south and north to catalyze a series of new campaigns and partnerships to “crack the crises” of covid, inequality ecology and climate and help accelerate the SDG Decade of Action and Delivery despite heavy headwinds
Jamie Drummond
Trevor Zimmer
James Mwangi is the Executive Director of the Dalberg Group, a global collection of impact-driven businesses that work to build a more inclusive and sustainable world where all people, everywhere, can reach their fullest potential. James joined Dalberg as a founding member in 2002, started Dalberg’s first Africa office (Johannesburg) in 2007, and subsequently served as Global Managing Partner of Dalberg’s consulting business, guiding the formalization of its structure and governance as a global firm. 
Since 2014, James has served as Executive Director of the Dalberg Group, supporting the growth of new businesses and coordinating the efforts of all Dalberg entities in pursuit of a shared mission. He has led the acquisition or incubation of several integral elements of the Dalberg Group which today operates from locations in more than 25 countries around the world, employing over 500 professionals.
James holds a degree in economics from Harvard University and is a 2009 Archbishop Tutu Leadership Fellow of the African Leadership Institute, a 2013 Young Global Leader of the World Economic Forum and a 2021 Yale World Fellow. 

He currently serves on the boards of the Skoll Foundation, One Acre Fund, Old Mutual Limited, The Global Centre for Pluralism and the Nairobi International Financial Centre Authority
James Mwangi

Background image: NASA, Qadisiyah, Baghdad, Iraq.