The Sandy River Charitable Foundation

The Sandy River Charitable Foundation

Founded in 1997 by Archie W. Berry Jr., the Sandy River Charitable Foundation is a family philanthropy with a paid staff of one — Nathanael W. Berry — and a volunteer board that includes treasurer Jon W. Berry and board member Cathy Berry. The foundation's wealth origin is not publicly disclosed, and it does not accept unsolicited proposals, relying instead on internal conviction and long-term operating relationships. From its headquarters on Voter Hill Road in Farmington, Maine, Sandy River's grantmaking prioritizes community well-being, education, arts, and regional economic development, with an explicit international window for community-level projects. The foundation's investment strategy departs from a conventional endowment model. Alongside granting roughly $1.5 million annually (per Altss estimate), the portfolio pursues early-stage venture, distressed debt, and co-investments. Cathy Berry — a portfolio manager at Maine-based Baldwin Investment Management — leads the impact-investing charge; she is also a founder and board member of the Slow Money network, a frequent speaker at Intentional Endowments Network events, and active in Maine Angels. That practitioner overlap gives the foundation unusual fluency in deal-level diligence for an institution its size. Publicly confirmed asset-class exposures include a fixed-income portfolio, publicly traded securities, and direct real estate such as the foundation's own mixed-use office property. Sandy River's total asset base is small by foundation standards — an Altss estimate places the corpus at $30–50 million — and its professional footprint is lean. The team operates through Schwab investment accounts and maintains grantee relationships via membership in PEAK Grantmaking and the Maine Philanthropy Center. A notable adjacent vehicle was the Berry family partnership's long-term ownership of Saddleback Mountain resort from 2003 through its 2020 sale to the Arctaris Impact Fund. The foundation's longest-running partnership is with Coastal Enterprises, Inc. (CEI), a Maine-based community development financial institution that channels impact capital into rural businesses. Sandy River's structural differentiator is the dual-hat role of Cathy Berry, who serves as both foundation board member and working impact-portfolio manager inside a registered investment advisor. Most foundations under $50 million either outsource the entire investment function or manage a plain-vanilla 60/40 portfolio. Sandy River instead runs a practitioner-led allocation model that blends direct granting, market-rate fixed-income, venture co-investment, and distressed credit — all governed by a single-family board that operates strictly by invitation only.