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Our tEAM

Gabrielle (Ellie) Rubenstein

Co-Founder + Managing Partner

Ellie Rubenstein

About

As the Co-Founder and Managing Partner of Manna Tree, Ellie is a passionate investor focused on improving human health. Ellie is a member of the firm’s Executive and Investment Committees. She shapes the firm’s vision strategy and investment products and develops Manna Tree’s global network. For the past 10 years, Ellie has studied the evolution of the food and beverage supply chain, and the increasing consumer demand for healthier alternatives.

Prior to founding Manna Tree, Ellie helped develop the impact investing thesis for a family investment office well-known for ESG driven strategies. As part of new product development for the office, she helped launch the first ever arctic asset manager based in Alaska. This established her belief in the power of impact investing to address social challenges without sacrificing returns, as well as the importance of energy and food as asset classes.

Ellie served as a Trustee of the Alaska Permanent Fund Corporation from 2022 to 2024, including as Vice Chair of the Fund and Chair of the Governance Committee from 2023 to 2024. Ellie contributed to significant reforms and advancements, including re-establishing incentive compensation for APFC Staff to reduce staff turnover and recruit top talent, approving a $100 billion strategic plan, passing governance reforms, expanding asset allocation, hiring a new CEO, and opening an Anchorage office.

In January 2024, Ellie joined the Trustee Advisory Board of AIF Global as part of her role with the Permanent Fund, where she contributed thought leadership on institutional investment policy. Ellie resigned from both of these roles on August 1, 2024 to focus on the growth and development Manna Tree.

In addition to her role at Manna Tree, Ellie is an active philanthropist. Through her family office, Mission: Ingredients, Ellie supports organizations that drive positive change in global population health. She supports ingredient research, outdoor wilderness, youth education, and military health and recovery programs.

Ellie’s combination of experience with both investment and philanthropy has inspired families and institutions to make investments in human health.

Ellie earned her bachelor’s degree in sociology from Harvard University, where she was a varsity ski racer. She earned her MS in agricultural economics from Purdue University College of Agriculture and an MBA from the Kelly School of Business at Indiana University, where she was a Tobias Fellow.

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