Jay L. Koh
Co-Founder and Managing Director

Jay Koh is co-founder and Managing Director of The Lightsmith Group. Mr. Koh has over 20 years of experience in investing and public policy in the public and private sectors. More

Sanjay J. Wagle
Co-Founder and Managing Director

Sanjay Wagle is co-founder and Managing Director of The Lightsmith Group. Mr. Wagle has over 20 years of experience in investing, company management, and government focused on clean energy, resources, and climate. More

Richard Kauffman
Independent Member of the Investment Advisory Committee

Richard Kauffman is an Independent Member of the Investment Advisory Committee of The Lightsmith Group. Mr. Kauffman has over 30 years of experience as an investor, corporate executive, and government official, with a focus on clean energy, clean technologies, and climate change. More

Praneet Singh
Senior Investment Advisor

Praneet Singh is a Senior Investment Advisor to The Lightsmith Group. Mr. Singh has over 30 years of global experience in private equity, built on a strong operational track record of leading and transforming businesses as a CEO, management consultant and marketer. His current focus is investing for social impact and climate change, and scaling global healthcare businesses, and has worked across India, SE Asia, Latin America and the US. More

Tara L. Guelig
Director of Sustainability & Impact

Tara Guelig is The Lightsmith Group’s Director of Sustainability & Impact. She designed the firm’s approach to measuring impact and ensures that ESG issues are considered at all stages of the investment process. Previously, Ms. Guelig spent 15 years at U.S. Development Finance Corporation (formerly known as Overseas Private Investment Corporation) where she originated investments in the financial services, logistics, climate finance, impact investing, and agribusiness sectors. More

Serena Y. Shi
Vice President

Serena Shi is a Vice President at The Lightsmith Group and joined the team in November 2018 as a Senior Associate. Prior to Lightsmith, Ms. Shi was an Investment Analyst at the International Finance Corporation, the private sector investment arm of the World Bank, where she focused on direct equity and debt investments in the telecoms sector in emerging markets. She was previously an Associate at Goldman Sachs, where she worked on structured debt transactions across the renewable energy, telecoms, media, pharmaceutical, and consumer retail sectors.

Ms. Shi holds a B.S. from the Wharton School at the University of Pennsylvania.

Jill Xu

Jill Xu joined The Lightsmith Group in January 2021 as an Investment Analyst. Prior to joining Lightsmith, Ms. Xu was an Investment Banking Analyst at Goldman Sachs in the Financial Institutions Group where she worked on M&A, equity and debt financing transactions across the financial technology, asset management and insurance sectors.

Ms. Xu holds a B.S. in Finance and Data Science from New York University’s Stern School of Business.

Brian Parham
Fellow and ASAP Program Manager

Brian Parham is a Fellow and ASAP Program Manager for The Lightsmith Group. Previously, Mr. Parham was the Chief of Staff at The ICCF Group where he managed global operations and oversaw multiple Global Environment Facility grants with programs in Africa and Latin America.

Mr. Parham holds an MBA from the University of Cambridge Judge Business School and was a Park Scholar at North Carolina State University where he earned a B.S. in Biological Science and a B.A. in International Studies.

Careers at Lightsmith

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