# Garrison Forest School

Garrison Forest School is an Endowment / Foundation based in Owings Mills, United States.

## Overview

- **Organization type:** Endowment / Foundation
- **Headquarters:** Owings Mills, United States
- **Region:** North America
- **Address:** 300 Garrison Forest Rd, Owings Mills, MD 21117
- **Founded:** 1910
- **Assets under management:** $41M (Altss estimate)
- **Website:** gfs.org
- **LinkedIn:** https://www.linkedin.com/school/garrison-forest-school/

## Regulatory record

- **Reports private funds:** No

## About

Garrison Forest School was founded in 1910 as a private college-preparatory boarding and day school for girls on a 110-acre campus in Owings Mills, Maryland. The institution's endowment, which we estimate holds $41M in assets, reflects over a century of stewardship by a board that has historically drawn from Baltimore's concentrated financial community — particularly the leadership ranks of Brown Advisory and T. Rowe Price (Altss estimate). President of the Board George J. Sakellaris also serves as a portfolio manager at Brown Advisory, while Trustee Emeritus Henry H. Hopkins is the former chief legal counsel at T. Rowe Price and a trustee of Brown Advisory Funds, creating a direct line from the investment committee to professional money management. The endowment allocates across a mix of early-stage venture, seed investments, start-up commitments, expansion-stage deals, and fund-of-funds vehicles. The strategy appears to blend direct investments with commitments to external managers, though granular position-level disclosure is absent from public filings. Known campus assets include the main academic facilities, the residential property Lochinvar, the Mason Lord Collection, and the Equestrian Institute facilities — an unusual operating component for an educational endowment. The institution is a member school of the Baltimore Educational Scholarship Trust (B.E.S.T.) and maintains a Women in Science and Engineering (WISE) partnership with Johns Hopkins University. Team composition flows through the board structure rather than a standalone investment office. Beyond Sakellaris and Hopkins, Treasurer Amabel Boyce James brings ties to the James Family Charitable Trust. No dedicated in-house CIO or OCIO disclosure has surfaced in public materials. Structurally, this endowment is unusual in combining trustee-level professional money-manager oversight with ownership of a residential property and an equestrian program — operational assets uncommon in typical educational endowments. The deep integration of Brown Advisory and T.

## Sectors

- Education

## People

- George J. Sakellaris — President of the Board of Trustees
- Amabel Boyce James — Treasurer of the Board of Trustees
- Henry H. Hopkins — Trustee Emeritus

## Questions

### Who runs investment decisions at Garrison Forest School?

The Board of Trustees guides investment strategy, with President George J. Sakellaris — a portfolio manager at Brown Advisory — and Treasurer Amabel Boyce James playing key roles. Trustee Emeritus Henry H. Hopkins, former chief legal counsel at T. Rowe Price and trustee of Brown Advisory Funds, adds further institutional money-management expertise. No dedicated internal CIO has been publicly identified.

### What is the estimated size of Garrison Forest School's endowment?

Altss estimates the endowment at $41M, based on available operational and asset data. The school does not publicly disclose a precise AUM figure, and this number should be treated as an informed approximation rather than a confirmed disclosure.

### What non-investment assets does the endowment hold?

Beyond financial instruments, Garrison Forest School's assets include the 110-acre Owings Mills campus, a residential property called Lochinvar, the Mason Lord Collection, and the facilities of its Equestrian Institute and polo program. These are operating assets rather than liquid financial holdings and contribute to the endowment's atypical structure.

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Last updated: 2026-08-11T02:43:31.692Z

Canonical page: https://altss.com/profile/garrison-forest-school

Maintained by Altss — https://altss.com — methodology: https://altss.com/methodology