# Josiah Macy Jr. Foundation

Josiah Macy Jr. Foundation is an Endowment / Foundation based in New York, United States.

## Overview

- **Organization type:** Endowment / Foundation
- **Headquarters:** New York, United States
- **Region:** North America
- **Address:** 44 East 64th Street, New York, NY 10065, United States
- **Founded:** 1930
- **Assets under management:** $136M (Altss estimate)
- **Website:** macyfoundation.org
- **LinkedIn:** https://www.linkedin.com/company/josiah-macy-jr--foundation

## Regulatory record

- **Reports private funds:** No

## About

Kate Macy Ladd established the Josiah Macy Jr. Foundation in 1930, honoring her father, whose fortune came from oil and gas. The foundation remains headquartered at 44 East 64th Street in New York and is governed by a board chaired by Meredith B. Jenkins, who also serves as CIO of Trinity Wall Street. It identifies explicitly as the only national foundation devoted exclusively to improving the education of health professionals. The foundation operates as a purely grantmaking entity, deploying capital into early-stage, growth, and expansion initiatives that advance interprofessional clinical education. The foundation co-invests programmatically with other health-focused philanthropies. Confirmed partners include the Robert Wood Johnson Foundation and The John A. Hartford Foundation, with which it supports the National Center for Interprofessional Practice and Education. The foundation is anchored by its historic headquarters building, a commercial asset on Manhattan's Upper East Side (per Altss research). President Holly J. Humphrey and board members Henry P. Johnson and Gregory H. Warner maintain ties to professional networks; Johnson and Warner are identified as members of the Young Presidents' Organization, and the foundation itself is a member of Philanthropy New York. No recent operational transitions have been publicly recorded in the last 24 months. The foundation's structural distinctiveness lies in its undiluted focus on health-education grantmaking paired with an eclectic, multi-asset endowment strategy. Unlike generalist foundations that treat grantmaking and investing as wholly separate functions, the Macy Foundation's investment portfolio—including fund commitments and energy exposure—sits alongside a rigorously single-issue philanthropic mandate, creating a narrow mission funded by diversified market exposure.

## Sectors

- Healthcare Services
- Education

## People

- Holly J. Humphrey — President
- Meredith B. Jenkins — Board Chairperson

## Questions

### Who runs investment and grantmaking decisions at the Josiah Macy Jr. Foundation?

Grantmaking strategy is led by President Holly J. Humphrey, the foundation's senior executive. Investment oversight falls under the governance of a board chaired by Meredith B. Jenkins, who concurrently serves as Chief Investment Officer at Trinity Wall Street. This dual role connects the foundation's endowment management to institutional investment expertise.

### What is the foundation's known posture on co-investments alongside external GPs?

The foundation's tax filings and Altss research indicate it allocates capital to co-investments and private fund commitments as a limited partner, not as a general partner leading rounds. Its grantmaking partnerships, however, routinely involve direct co-funding with other philanthropies.

### How is the foundation's endowment invested?

The endowment is invested across a diversified portfolio that includes commercial real estate (the foundation's headquarters on East 64th Street in Manhattan) and a range of alternative asset classes: buyout, distressed debt, venture capital, growth equity, secondaries, special situations, and energy exposure, per Altss research.

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

Canonical page: https://altss.com/profile/josiah-macy-jr-foundation

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