JLens TEAM
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Julie hammerman

Executive Director & Founder

Julie is inspired by the use of investment capital and business as a force for good in the world. She oversees JLens educational, advocacy, and advisory services. Julie began her career nineteen years ago in investment banking on Wall Street, and later served as an investment advisor at JP Morgan and Merrill Lynch. She was on the founding team of a for-profit social enterprise focused on women's health. Most recently Julie was the Impact Investment Strategist at a multi-family office where she implemented customized impact portfolios.

Julie received her MBA from Harvard Business School, her BA in Economics from Tufts University, and she holds the Certified Financial Planner (CFP) designation. Julie is a Wexner Foundation Jewish Heritage alum, an UpStart incubator graduate, a Cordes fellow, and has served on the boards of the Federation, ADL, and the Jewish Community Relations Council.  Email: julie@jlensnetwork.org

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Rachel Cohen

Director of Research

Rachel oversees JLens' social and environmental research. Previously she worked in ESG (Environment, Social, Governance) Consulting at MSCI. She has led several large scale projects on environmental and social risks and opportunities, as well as adherence to globally accepted ethical standards. Her areas of expertise include access to medicine, bioethics, supply chain risk assessment, environmental risk analysis, and product safety.  



Prior to MSCI, Rachel spent two years as a corporate sustainability consultant. She began her career as a Jewish professional at the OSU Hillel. Rachel lived in Sde Boqer, Israel for two years earning an M.A. in Middle East Studies from Ben-Gurion University. She holds a M.A. in Public Policy & Philosophy with a concentration in Public Health from George Washington University, and a B.A. in Political Science from the Ohio State University with a minor in Jewish Studies from Hebrew University in Jerusalem.  Email: rachel@jlensnetwork.org

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Rabbi Jacob Siegel

Director of Engagement

Rabbi Siegel oversees JLens' Jewish communal engagement and education, and assists with shareholder advocacy and interfaith investor collaborations. He has served as a dynamic educator on the topics of money, social justice, sustainability, and ethical food for Hazon, Eden Village Camp, The 92nd Street Y, Jewish Farm School, and at colleges and synagogues. Rabbi Siegel fought poverty and racism in his prior role with Americorps, and he founded a nonprofit focused on youth and violence prevention.


He received his rabbinic ordination from Yeshivat Chovevei Torah, a modern Orthodox rabbinical school in New York, his undergraduate degree in Mathematics from Washington University in St. Louis, and he spent a year at Israel's Pardes Institute.  Email: rabbisiegel@jlensnetwork.org

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