
Building resilient financial markets to accelerate the transition and mobilise capital for implementation
Host Venue

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Recognised for uniting asset owners with over USD $3 trillion in assets under management, the Sustainable Investment Forum in official partnership with UNEP FI, will set the stage for the finance community during Climate Week NYC for its 11th annual edition.
In 2026, the Forum will convene 250 qualified delegates: senior decision-makers allocating capital, shaping climate finance policy, and advancing responsible investment strategies. The audience is a balanced mix of North American market leaders and international stakeholders, bringing a global perspective to regional opportunities and challenges. Access a highly curated, globally diverse network influencing trillions in assets under management, with a direct line into the evolving North American market and its role in the global transition to a low-carbon, nature-positive economy.



Andrew Siwo is the Head of Sustainable Investments and Climate Solutions at the New York State Common Retirement Fund. He is charged with providing leadership and oversight of sustainable investment efforts across the Fund’s ~ $300 billion portfolio and $40 billion commitment to sustainable investments. Previously, Siwo was an Investment Director and Head of Mission-Related Investments at Crewcial Partners, an investment consultancy to over 150 leading foundations and endowments. Prior to joining Crewcial Partners, Siwo was a manager at the Global Impact Investing Networking (GIIN). In his capacity there, he was responsible for the operation, sourcing, and development of ImpactBase, the largest global directory of impact investment funds. Prior to joining the GIIN, Siwo spent five years in the investment banking division at JP Morgan—most recently in the Global Special Opportunities Group, a $3 billion proprietary portfolio of principal investments in private equity, debt, mezzanine, infrastructure, and real estate. He also held roles on the Rates Desk and executed fixed- income financing transactions as well as the Securitized Products Group, where he priced collateralized mortgage obligations. Before JP Morgan, Siwo was a member of the Corporate Finance and Real Estate Strategy Group at Victoria’s Secret, where he oversaw capital budgeting. He began his career at E*TRADE Financial where he managed a team of investment representatives serving active traders and high-net-worth investors. He has held FINRA Series 7, 63, and 24 licenses. His investment articles have been printed in various industry publications. Academically, he has taught at The Wagner Graduate School of Public Service at NYU as an Adjunct Assistant Professor of Public Service and at the Brooks School of Public Policy at Cornell University. Siwo serves on the Board of New York Professional Advisors to Community Entrepreneurs (NYPACE) and United World Schools (UWS). Siwo completed an MPA in Finance and Fiscal Policy at Cornell University and holds a BA in Accounting from Morehouse College.






Ashley leads work on nature for Norges Bank Investment Management. He represents NBIM as one of the 40 global TNFD Taskforce members, consisting of financial institutions and corporates across the globe. Previously he was part of McKinsey & Company. He holds a PhD in Environmental Economics from the London School of Economics.



Bertrand Millot steers the development of La Caisse’s sustainable investing strategies, including its climate policy. As such, he is responsible for defining the major strategic orientations in this area and asserting the organization’s leadership in sustainable investing with internal and external stakeholders. He participates in major global forums and maintains open dialogue with civil society. He also represents the organization before the Board of Directors, depositors and other partners on climate issues. Lastly, he contributes to La Caisse’s international outreach on sustainability. Mr. Millot is one of the architects of La Caisse’s climate strategy and a seasoned investor in infrastructure and corporate debt in growth markets, where sustainability considerations have always been at the forefront. He joined La Caisse in 2015 and has held several positions in sustainable investing and risk management, including supporting the Fixed Income, Capital Solutions, Infrastructure and Cross-sectoral Risk teams. Prior to joining La Caisse, Mr. Millot was CEO and Chief Investment Officer of Cordiant Capital, a fund manager specializing in corporate debt in emerging markets. In his early career, he worked in infrastructure project financing at the European Bank for Reconstruction and Development in London and BNP Paribas in Paris. He holds an MBA from McGill University and a Master’s Degree in Engineering from École nationale supérieure d’arts et métiers, Paris, and is a member of the Institute of Corporate Directors (ICD.D). Since 2022, Mr. Millot has worked with Competent Boards as an expert, providing courses and training for corporate directors and executives. He sits on the Québec government’s Advisory Committee on Climate Change, as well as on the Boards of Ceres, a U.S. NGO leader on sustainability issues, the Datamars Sustainability Foundation and the Sustainable Infrastructure Foundation (SIF).



Mr. Rice is a Portfolio Manager in the CalSTRS Sustainable Investment & Stewardship Strategies (SISS) unit and has been leading on sustainability-aligned investment initiatives at CalSTRS for 23 years. Mr. Rice’s principal responsibility is managing CalSTRS Net Zero Portfolio Emissions by 2050 or Sooner pledge, which is focused on moving CalSTRS Investment Portfolio towards net zero emissions through managing carbon emissions exposure, increasing portfolio investments in climate solutions, and influencing global financial market participants to accelerate integration of net zero considerations. Mr. Rice also supports the SISS stewardship team on a variety of sustainability-aligned market engagements and provides oversight to the SISS private markets investment portfolio, a multi-billion-dollar systematic platform that invests across private markets in opportunities that demonstrate positive contributions to a more sustainable global economy and are additive to CalSTRS risk-return objectives. Mr. Rice received an MBA from the U.C. Davis Graduate School of Management and a bachelor’s degree in Economics-Business from U.C.L.A. |



Colin Tissen is Senior Sustainability Lead within Mandate Management at PGGM, one of the Netherlands’ largest pension investors. He is responsible for integrating sustainability considerations across PGGM’s investment mandates, working closely with internal investment teams and external managers across public and private markets. Prior to his current role, Colin advised PFZW, the Dutch pension fund for the healthcare sector, on its sustainable investment strategy and long-term sustainability objectives. His work focuses on climate change, biodiversity, stewardship, impact investing and systems-level investing. Colin holds a PhD in Sustainable Finance from Maastricht University. |



Dr. Mischa Lentz heads ADB’s Private Sector Climate Finance Team, overseeing climate finance support for private sector operations and contributing to the institution’s strategic climate agenda. Since joining ADB in 2020, he has played a key role in advancing innovative financing solutions and expanding climate-focused investment across Asia and the Pacific. Prior to ADB, Dr. Lentz held senior positions at the European Bank for Reconstruction and Development (EBRD), where he led cross-sector investments in multiple regions, including the Middle East and Eastern Europe. He began his career with PwC Germany, advising on complex corporate restructuring and investment transactions. Dr. Lentz holds master’s degrees in civil engineering and finance, a PhD from the Technical University of Berlin, and serves as an Adjunct Professor at the University of the Philippines Diliman.



Ida Mosegaard Schiellerup is a Senior ESG Analyst at PensionDanmark, one of Denmark’s largest pension funds managing the retirement savings of 800,000 members. She leads ESG due diligence on large-scale green infrastructure investments across renewable energy and real estate, and advises on how systemic pressures — from AI-driven energy demand to shifting climate policy — reshape the investment landscape. Before joining PensionDanmark, she was part of the founding team that built Planetary Impact Ventures, Denmark’s first green venture capital fund. She also serves on the board of Tuborgfondet, a leading Danish philanthropic foundation supporting green transition.
Gain decision-useful insight into transition finance, climate risk, stewardship, natural capital and the evolving fiduciary landscape.
Connect with 250 curated senior leaders from pension funds, sovereign wealth funds, insurers, asset managers, banks, corporates and policymaking institutions.
Explore credible and scalable opportunities across climate solutions, adaptation, resilience and nature, spanning both public and private markets.
Join a connected Climate Week NYC programme linking global implementation priorities with the capital, partnerships and investment decisions required to deliver them.
The Forum will convene 250 highly curated delegates, a globally diverse network influencing trillions in assets under management, with a direct line into the evolving North American market and its role in the global transition to a low-carbon, nature-positive economy. The audience will be a balanced mix of North American market leaders and international stakeholders bringing a global perspective to regional opportunities and challenges.
Sustainable Investment Forum is known for bringing together asset owners and institutional investors together during Climate Week NYC. This year, the Sustainable Investment Forum will return in person during Climate Week NYC and connect 350 qualified delegates to network and learn.























“It has been a pleasure to work with Climate Action over the last number of years. These forums, we believe are one of the most important places for leading financial institutions to get together, share best practice and understand how markets are moving towards real sustainability integration.”
“The people who are attending the Forum are a wide range of both asset owners and asset managers – and when we’re looking to move the agenda forward in terms of further and more extensive sustainable investment on a global basis, these are the people who are the decision makers.“
“We’ve been coming to [the Sustainable Investment Forum North America] for multiple years now. We think that within the North American market it’s one of the best, if not the best at bringing together of the minds, both from the asset owner and asset management perspective”

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