# Trinity School, New York

Trinity School, New York is an Endowment / Foundation based in New York, United States.

## Overview

- **Organization type:** Endowment / Foundation
- **Headquarters:** New York, United States
- **Region:** North America
- **Address:** New York, NY, United States
- **Founded:** 1709
- **Assets under management:** $90 million (Altss estimate)
- **Website:** www.trinityschoolnyc.org
- **LinkedIn:** https://www.linkedin.com/school/trinity-school-nyc/

## Regulatory record

- **Reports private funds:** No

## About

Trinity School was chartered in 1709 by William Huddleston under the parish of Trinity Church, making it the oldest continually operating educational institution in New York City. The K-12 independent day school occupies a block of the Upper West Side, with its endowment structurally intertwined with the commercial and residential real estate that houses its operations. Governance falls to a board led by Igor Kirman and stacked with figures from Wachtell Lipton, Warburg Pincus, and Kelso & Company — a configuration that embeds private-market relationships into the endowment's oversight. The endowment's investment posture is opaque by design. No public asset allocation or deployment strategy is disclosed. What is known is the physical footprint: the school owns or controls at least seven distinct properties between West 91st and West 92nd Streets, including five commercial buildings and two residential LLCs, plus holdings on Columbus Avenue. The real estate functions as both operational plant and a durable balance-sheet asset, a structure common among legacy Manhattan institutions that predate modern endowment models. The school has also accessed tax-exempt municipal bond markets via the Build NYC program, issuing notes in 2016 and 2018. The board includes Ralph Schlosstein, Chairman Emeritus of Evercore and co-founder of BlackRock, a connection that brings deep asset-management lineage to the committee. Current trustees Cary Davis (Warburg Pincus), Richard D'Albert (Seer Capital Management), and Sandy Osborne (Kelso & Company) further concentrate private-equity and alternative-investment expertise at the trustee level. The school reported an Altss-estimated $90 million endowment, a figure that, while modest relative to university peers, is significant for a single-school endowment in the K-12 independent sector. Trinity's structural differentiator is the convergence of real estate ownership, municipal finance access, and a trustee roster drawn from senior ranks of elite private equity and law firms. Rather than a separately managed investment office, the endowment is governed by the same board that oversees school operations, blurring the line between institutional investment committee and operating nonprofit. This architecture — illiquid urban real estate paired with a networked investment committee — creates a capital base that functions more like a family-backed institutional foundation than a conventional school endowment.

## Sectors

- Education

## People

- Igor Kirman — President of the Board of Trustees
- John Allman — Head of School (through 2023-2024)
- Alexis Mulvihill — Head of School Designate
- Katherine Haves Malitzky — Alumni Board President (2025-2026)

## Questions

### How large is Trinity School's endowment?

Trinity School has not publicly disclosed its endowment size. Altss research estimates the endowment at approximately $90 million, based on the school's real estate holdings, municipal bond issuances, and peer benchmarking within the top tier of New York City independent K-12 schools.

### What is Trinity School's real estate footprint?

Trinity School controls a significant property assemblage on Manhattan's Upper West Side, spanning at least seven parcels between West 91st and West 92nd Streets. Holdings include five commercial buildings that house the main campus, upper school, middle school, science labs, and administrative offices, plus two residential LLCs at 134 and 136 West 92nd Street. The school also owns or leases property on Columbus Avenue.

### How is the endowment's real estate taxed or financed?

Trinity School has accessed tax-exempt municipal bond financing through the Build NYC program, with public records showing issuances in 2016 and 2018. The school's primary real estate holdings appear to be owned rather than leased, functioning as both operational assets and a long-term store of capital, though detailed tax-status documentation for each parcel is not publicly available.

### How does Trinity School's endowment compare to other NYC independent schools?

At an Altss-estimated $90 million, Trinity's endowment is substantial for a single K-12 institution but significantly smaller than university endowments or the largest private-school foundations nationally. Among peer NYC independent schools — such as Brearley, Collegiate, and Dalton — endowment sizes are rarely disclosed, making direct comparison difficult without access to IRS Form 990 filings or bond-offering documents.

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Last updated: 2026-06-03T20:00:00.000Z

Canonical page: https://altss.com/profile/trinity-school-new-york

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