President of the C40 Board, UN Secretary-General Special Envoy for Climate Ambition and Solutions, and 108th Mayor of New York City
Picture of Michael R. Bloomberg

Michael R. Bloomberg is the founder of the global financial data services and media company, Bloomberg LP.

Between 2002 and 2013, he served as Mayor of New York City and reduced the city’s carbon footprint by 19 percent, revitalized the waterfront, implemented ambitious public health and anti-poverty programs, expanded support for arts and culture, and increased graduation rates and private sector job numbers to record highs.

As a philanthropist, Bloomberg has given over $3.3 billion in support of education, public health, government innovation, the arts, and the environment. In 2014, United Nations Secretary-General Ban Ki-Moon appointed Bloomberg Special Envoy for Cities and Climate Change. In that role, Bloomberg works to highlight the climate work cities are doing and the critical role mayors can play in helping nations create ambitious carbon reduction commitments.

This builds on his role as president of the board of the C40 Climate Leadership Group, a network of megacities working to reduce global greenhouse gas emissions. Bloomberg also serves as a Co-Chair of Risky Business, an organization that is quantifying the economic risks American businesses face from climate change.

Head of Environment Program, Bloomberg Philanthropies
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Antha Williams leads the Environment Program at Bloomberg Philanthropies. Previously she was Senior Vice President at Corridor Partners, a donor advisory firm focused on climate and clean energy. Antha also worked as the Advocacy Executive at Atlantic Philanthropies, where she oversaw grants to support health care and comprehensive immigration reform. As Program Officer at Beldon Fund, Antha built support for environmental issues by policymakers through grassroots organizing at the state level.

Outside of philanthropy, Antha has worked as a campaigner and organizer, directing large scale voter protection efforts, and serving in leadership positions for five years with Green Corps, a training program for aspiring environmental organizers. Antha graduated from Dartmouth College and lives in New York.

Global Director, Climate at the Children’s Investment Fund Foundation

Hongpeng Lei serves as Global Director, Climate at the Children’s Investment Fund Foundation (CIFF).

He joined CIFF in 2015 and he currently leads CIFF’s global portfolio on cities, transport, air quality, and cooling. He also oversees CIFF’s regional strategy and implementation in East and South East Asia, including China as CIFF’s China Chief Representative, working on energy transition, climate finance, cities and transport, air quality, food and land use, and China’s roles in global climate actions.

Prior to joining CIFF, he was the Director of the Energy Program in China for the World Resources Institute, focusing on renewable energy, energy efficiency, and low carbon city planning and demonstration. Hongpeng has both an engineering and a management degree.

CEO of Realdania
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Jesper Nygård is the CEO of Realdania. Mr. Nygård obtained an MSc in Public Administration from Roskilde Universitetscenter in 1989. He is Chairman of Realdania By & Byg and Bolius, Vice Chairman of Fondenes Videncenter (Danish Foundations’ Knowledge Center) and board member of C40 Cities, Danish Architecture Center, Fonden for Socialt Ansvar (Federation for Social Responsibility) and Brøndbyernes I.F. Fodbold A/S (Danish soccer club) 

Mr. Nygård joined the Supervisory Board of Realdania in 2003 and was elected chairman in 2009. He resigned from the Supervisory Board on 4 June 2013, when becoming CEO of Realdania. Before joining Realdania, he was CEO of KAB, a large Danish non-profit social housing association, from 1996-2013. Mr. Nygård has previously served as Chairman of the Board of Landsbyggefonden (the national social housing fund) from 2000-2013; Chairman of the Board of the Social Housing Association AKB from 1988 to 1996 (Board member from 1983-1996) and Chairman of the National Federation of Housing Associations from 1993 to 1996 (board member 1990-2013). 

Mr. Nygård is an active public debater. He lives in Birkerød north of Copenhagen with his wife Tine and two daughters.

Counselor to the Chair of the Board for the Clinton Foundation
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Bruce Lindsey serves as the Chairman of the Board of the Clinton Foundation. Bruce joined the Foundation in 2001 as general counsel and became CEO in 2003. Bruce served as assistant to the president and deputy counsel to the president throughout President Clinton’s two terms in office.

He had previously been a partner at Wright, Lindsey & Jennings, a law firm in Little Rock, where he is currently ‘of counsel.’ Bruce received a J.D. from Georgetown University Law Center and a B.A. from Rhodes College.


Jennifer Musisi is a transformational leader with three decades of experience in turning around institutions and systems in challenging settings. She was the first Executive Director of Kampala, the Capital City of Uganda (a role comparable to mayor, chief executive or city manager). She has earned a global reputation for integrity, leadership, innovation, and building strong systems to overcome corruption, inadequate financing and dysfunction. She automated revenue management and service delivery systems and mobilized local and international finances to implement a wide range of sustainable development projects. Ms Musisi was appointed a UN Ambassador for Sustainable Development under Goal 11, and is also the City Leader in Residence at the Bloomberg Harvard City Leadership Initiative.

Deputy Mayor for Environment and Energy, London
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Shirley Rodrigues was appointed as Deputy Mayor for Environment and Energy in October 2016. She is using her environmental expertise to work with Transport for London (TfL) to deliver the Mayor’s plans for tackling air pollution across London. This includes: expanding the Ultra-Low Emission Zone (ULEZ), new charges for the oldest and most polluting vehicles, and creating Low Emission Bus Zones.

She is also overseeing delivery of the Energy for Londoners programme (helping Londoners generate more low-carbon electricity), helping to boost London’s recycling rates and cutting landfill. She’s working to deliver the ambitious target of London becoming a zero-carbon city by 2050.

Shirley was Acting Executive Director for Climate Change at the Children’s Investment Fund Foundation (CIFF), an independent philanthropic organisation that works to transform the lives of poor and vulnerable children in developing countries.

She helped establish CIFF’s cities and climate strategy and represented CIFF on the board of the C40 Large Cities Leadership Group – a network of global cities committed to addressing climate change.

Shirley has an impressive track record of developing new environmental policies in London. She worked in senior environmental policy roles from 2005 to 2009, helping to implement the London Low Emission Zone and programmes to retrofit London’s residential and commercial buildings.

Head of International Affairs, Milan

Vittoria Beria is Head of International Affairs for the City of Milan. In this role, she advises the Mayor on international affairs, manages the City of Milan international partnerships and projects and city diplomacy activities. Vittoria supports the Mayor in his role as C40 Vice Chair and Chair of the C40 Green and Just Recovery Task Force, and also coordinates the activities undertaken to fulfil C40 commitments, as well as the participation in C40 programmes and initiatives. Vittoria served as a United Nations officer for over a decade, both at the UN Secretariat Headquarters in New York and in the field. Her work focused on social and economic development. As Deputy Director for International Affairs of the Expo 2015 Company – a public-private partnership created by the Government of Italy to design and manage the World Expo in Milan – she ensured the engagement of countries and intergovernmental organizations. Vittoria holds a Degree in Economics and Business Administration from the Catholic University of Milan and an MSc in Development Management from the London School of Economics and Political Science.

Undersecretary for Economic Affairs and Finance, Jakarta

Dr Sri Haryati is the Undersecretary for Economic Affairs and Finance in the office of the Governor of Jakarta. In this role, she assists the city secretary in coordinating the formulation of policies on economic affairs and finance. With more than 22-years of experience working as a civil servant for the city administration; her expertise ranges from financial and asset management, taxes, tourism, transportation, trade and industry, SMEs, investment, and the management of city-owned enterprises.

Dr Haryati was previously assigned as Head of Economic Affairs Bureau from 2016 to 2019 and held managerial positions in different departments. In response to the plan to move the capital city, Governor Anies Baswedan appointed her to lead the city administration working team, currently drafting academic papers and recommendations to the national government for the bill of Jakarta’s special territory status in the future.

Dr Sri Haryati holds a BSc in Aquatic Resource Management, an MSc in Coastal and Marine Resources Management and a PhD in Natural Resources and Environmental Management, all from the Bogor Institute of Agriculture, Indonesia.