# William and Flora Hewlett Foundation

William and Flora Hewlett Foundation is an Endowment / Foundation based in Menlo Park, United States.

## Overview

- **Organization type:** Endowment / Foundation
- **Headquarters:** Menlo Park, United States
- **Region:** North America
- **Address:** 2121 Sand Hill Road, Menlo Park, CA 94025, United States
- **Founded:** 1966
- **Assets under management:** 13900 (Altss estimate)
- **Website:** hewlett.org
- **LinkedIn:** https://www.linkedin.com/company/the-william-and-flora-hewlett-foundation

## Regulatory record

- **Reports private funds:** No

## About

The William and Flora Hewlett Foundation was established in 1966 by engineer William Redington Hewlett and his wife Flora Lamson Hewlett. The foundation operates as an independent grantmaker with its own board and investment staff. The endowment allocates roughly 33 percent to private equity alongside public equities and real assets. Confirmed commitments run through managers including Maycomb Capital, BlackRock, Clearview Capital, and Endless LLP. Geographic exposure spans the United States and the United Kingdom. Capital is deployed via fund commitments and limited-partner positions rather than direct operating-company control. The foundation employs 130 professionals at its Menlo Park headquarters. It maintains relationships with the Flora Family Foundation and ClimateWorks Foundation. In September 2024 Amber Miller was named President while Ana Marshall continues as Chief Investment Officer. The investment committee works with advisors Mercer and Wilshire Associates. Governance separates the original Hewlett family wealth from day-to-day investment decisions through an independent board that includes multiple family members. This structure allows professional management of the endowment while preserving family oversight on grant strategy.

## Sectors

- Education
- Healthcare
- Environment
- Climate

## People

- Amber Miller — President

## Questions

### Who runs investment decisions at the William and Flora Hewlett Foundation?

Ana Marshall serves as Vice President and Chief Investment Officer. The team allocates across external managers in private equity and other asset classes.

### How does the foundation source its investment managers?

Commitments occur through established relationships with firms such as Maycomb Capital and BlackRock. The process relies on advisor input from Wilshire Associates.

### Does the foundation participate in fund commitments or only direct deals?

The endowment uses fund commitments and limited-partner positions. Direct equity holdings have been reduced over time.

### What asset classes receive the largest allocations?

Private equity accounts for approximately 33 percent of the portfolio. Real assets and public equities form the balance.

### How is the foundation related to the Flora Family Foundation?

The Flora Family Foundation was created by the same family to support additional charitable activities determined by the Hewlett family council.

### What investment stages does the foundation target through its managers?

Allocations include buyout, venture, distressed debt, and special situations strategies via external funds.

## Related profiles

- [Evercore Wealth Management](https://altss.com/profile/evercore-wealth-management-llc)
- [BMW Pension Fund](https://altss.com/profile/bmw-pension-fund-germany)

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Last updated: 2026-08-10T15:58:45.833Z

Canonical page: https://altss.com/profile/william-and-flora-hewlett-foundation

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