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Timothy P. Dunn, CFA - Chief Investment Officer, Managing member, Founder

Tim co-founded Terra Alpha Investments LLC. He designed and oversees the firm’s investment processes, funds, and operations.

Prior to founding Terra Alpha Investments LLC, Tim was a Senior Vice President at Capital Research which manages $1.3 Trillion in investment funds. At Capital, Tim was one of the lead managers of Capital's largest and most successful funds including Growth Fund of America, Capital World Growth and Income Fund, and EuroPacific Growth Fund. As an equity analyst he covered a diverse range of global sectors from consumer products to electrical equipment. Additionally, Tim served on many organizing committees at Capital and oversaw the firm's global research cluster teams.

He also worked as an advisor to CDP, formerly the Carbon Disclosure Project, on strategic planning and organizational effectiveness. Tim has served on the board of the Virginia Chapter of The Nature Conservancy and on the Board of Visitors of the College of William and Mary. Additionally, he chaired the board of the Reves Center for International Studies at the College of William and Mary.

Currently, he serves on the boards of both the Piedmont Foundation (which supports the Piedmont Environmental Council) and the PATH Foundation (a community health foundation based in Warrenton, VA).

He holds a BA in International Relations from The College of William & Mary and a MBA in Finance from Northeastern University.

Andrew GEller, Chief Financial officer, senior member

Andrew co-founded Terra Alpha Investments LLC after a 30-year investment career.  He is a member of the investment team while also managing our compliance, finance, and legal requirements.

Andrew began his investment career as a buy-side equity analyst covering multiple broad industry groups, including transportation, financial services, and capital equipment. As an analyst, he worked at four firms for 11 years including PNC Bank and Howard Hughes Medical Institute. Andrew then spent 19 years on the sell-side in institutional equity sales at Oppenheimer & Co. advising large mutual funds, banks and other money managers. While at Oppenheimer, Andrew worked in both Los Angeles and New York City.

In his free time, Andrew is a passionate cook and has taken on the challenge of working in the kitchens of some exceptional restaurants across the country.

He holds a BS in Finance from The Pennsylvania State University.

Amy E. Dine, director of advocacy, Partner

Amy leads Terra Alpha’s advocacy efforts to promote the use of Environmental Productivity in investment and business decisions - through engaging with business leaders, other investment professionals, and regulators; communicating our research through reports, presentations, and media; and partnering with like-minded institutions and experts. She also oversees our proxy voting.  

Amy spent ten years with Capital Group Companies.  As one of the global economists, she focused on OECD economies, portfolio asset allocation, and industry-specific macro research in the investment group.  She later took on environmental, social, and governance research and engagement for Capital International's institutional business as the initial ESG/SRI investment specialist, overseeing $15 billion in assets with an SRI/ESG mandate.  She joined the firm as part of The Associates Program, a select, in-house MBA-equivalent rotational program.  Prior to Capital, she was at the US Department of State.   

Just before joining Terra Alpha in May, 2015, Amy was the director of strategic development for a global non-profit and social impact business, Coexist, and then served on the board.  She is a founder of the Build Israel Palestine coalition and its initial grey-water recycling project.  She is a current member of WISE (Women for a Sustainable Economy), and is also a member of the US SIF Advisory Committee for the semi-annual report on US Sustainable, Responsible, and Impact Investing Trends.

She holds an AB in Social Studies with honors from Harvard College.


Elizabeth M. Lewis, director of strategy and business development, partner

Elizabeth joined Terra Alpha in November 2017. She leads Terra Alpha's strategy and business development. Elizabeth has over 15 years of experience working with businesses and investors on topics of sustainability, natural resources, and technology. Prior to Terra Alpha, she established and led World Resource Institute's Sustainable Investing Initiative. There she collaborated with institutional investors and other market participants to inform, develop, and promote widespread adoption of sustainable investment strategies in the mainstream investor marketplace. Earlier in her career, Elizabeth spent six years in leadership roles at Global Environment Fund, a private equity firm. Additionally, she was a management consultant at Booz Allen Hamilton, served as a consultant on climate finance to the World Bank and International Finance Corporation, was an Analyst for the Massachusetts Renewable Energy Trust, and worked for senators Edward M. Kennedy and Max Baucus. 

Elizabeth currently serves a Director of the Harvard Alumni Association and as a board member of the Harvard Club of Washington. She also serves on the Corporation of the Winsor School in Boston and as Vice President of the Stella P. Holt Foundation. She is also a Trustee of the Maryland/DC Nature Conservancy Chapter, a World Resources Institute's Sustainable Investment Advisory Council member, and Steering Committee member of the Intentional Endowments Network. 

Elizabeth holds an AB in Environmental Science and Public Policy from Harvard College and an MBA from Harvard Business School.

Dan Sanborn, CFA - director of investment data and research, Partner

Dan joined Terra Alpha in March 2015 as the Senior Data & Research Analyst. He now serves as the Director of Investment Data & Research and is responsible for overseeing the investment and data integration processes. Dan heads up the research team and conducts fundamental and environmental productivity analysis within the health care and real estate sectors.

Prior to joining the team, Dan had nearly a decade of experience between his time at Ned Davis Research Group and Vardon Capital Management. While at Ned Davis Research, he assisted the U.S. Strategist in identifying market capitalization, style, and thematic leadership trends, he worked with institutional clients in developing asset allocation models and stock screens, and he worked with the data team to assist with integrating data into the company’s internal processes. His primary responsibility at Vardon Capital, a $475 million hedge fund at the time, was to normalize earnings data and conduct financial statement analysis.

He holds a BA in Economics from Rollins College and a MS in Finance from University of Florida Warrington College of Business. Dan is a CFA charterholder.

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Jill Baker, CFA – Research Advisor

Jill joined Terra Alpha in September 2016 as a Research Advisor. She provides in-depth research on the financials sector, as well as insights on renewable energy markets and the Asian markets and economies.

Jill brings over 18 years of buy-side investment experience as an equity analyst with a focus on the banking sector.  She is an Adjunct Fellow of the Asia Business Council where she has focused on renewable energy in Asia and also serves on the Board of Foundation for Child Development.

She holds a BA in Economics from George Mason University and a MS in Global Finance from HK-NYU Stern School of Business.

brendan corbett, research analyst

Brendan served as one of the initial interns at Terra Alpha in December 2014 and joined the firm full-time in June 2015. He is responsible for fundamental and environmental productivity analysis within the energy and industrials sectors. He brings a deep knowledge of energy markets and was the lead author of Terra Alpha’s Emitting Money: Why Carbon Efficiency Matters for Businesses and Investors and Disclosure Matters: Environmental Data Improves the Investment Decision-Making Process reports.

While pursuing his college degree, Brendan worked as the assistant environmental coordinator for Virginia’s James City County, leading efforts to evaluate energy usage and efficiency.

He holds a BA in Environmental Policy and Finance from The College of William & Mary.

Jacob E. Hampton, Senior Research Analyst

Jacob started his Terra Alpha career in August 2015.  He is responsible for fundamental and environmental productivity analysis within the consumer sectors.

During his MBA studies, he worked as a private equity associate for Lone Star Investment Advisors, an equity research analyst covering the consumer staples sector for the Nancy Chambers Underwood Endowment Fund, and an investment analyst identifying deals for Southern Methodist University’s Venture Capital Fund.  Prior to his graduate studies, Jacob held a variety of different positions primarily in the business development function within the consumer goods industry.

He holds a BA in History and an MBA in Finance with a specialization in Investments from Southern Methodist University, where he graduated as salutatorian. Jacob is a CFA Exam Level II Candidate. 


Rita started out at Terra Alpha as an Environmental Productivity Intern in July 2015 and joined the team on a full-time basis upon completion of her internship. She is responsible for fundamental and environmental productivity research within the materials and utilities sectors. Rita also served as lead author of Terra Alpha’s Navigating Rough Waters: Businesses & Investors Must Adapt for a Water-Stressed Future report.

Prior to joining Terra Alpha, Rita worked in Copenhagen, Denmark as part of the Economics and International Business department at DIS, Study Abroad in Scandinavia. She previously interned for both The Nature Conservancy and The Piedmont Environmental Council in Virginia.

She holds a BA in Economics and History from The College of William & Mary.


Nathaniel Schwartz, Research analyst

Nathaniel joined Terra Alpha as an Investment Research Intern during the summer of 2016 and has since joined the team on a full-time basis. He is responsible for fundamental and environmental productivity research within the technology and telecom sectors.

While pursuing his undergraduate degree, Nathaniel served on the College of Business Student Council and provided coverage of the consumer goods sector as an analyst in the Auburn University Student Investment Fund. 

He holds a BS in Finance from Auburn University where he graduated with honors. Nathaniel is a CFA Exam Level I Candidate.

Forest E. Stone, Investor Relations Intern

Forest joined us after graduation in 2017.  She assists the investor development team, as well as on social media. For many summers, she has helped run the Upperville Colt and Horse Show, the oldest horse show in the US.  She also interned in social media for Carahsoft.    

She is an avid equestrian and cares deeply about land conservation.

Forest holds a BA from Dickinson College in International Business and Management, with a Concentration in Economics.

Colleen Orr, Advocacy intern

Colleen joined the Terra Alpha team after graduation in 2017. She assists the Director of Advocacy in preparing materials, conducting research, and calculating Terra Alpha's Carbon footprint.

She has experience as a research assistant, calculating gas footprints at the university level, and worked closely with the Office of Sustainability regarding Colorado College's Carbon neutrality goals. 

Colleen holds a BA from Colorado College in Environmental Science with a minor in Anthropology