The William & Flora Hewlett Foundation
Private foundation CAEIN 94-1655673
The William & Flora Hewlett Foundation is a private foundation based in Menlo Park, CA (EIN 94-1655673). Its most recent IRS Form 990-PF filing reports about $625M in grants paid across 2,001 awards in 2024. Its largest giving areas are Environment, Education, Community Development. This profile is built from public 990-PF giving history — it reflects what the funder has actually funded, not an open call for proposals.
Funding capacity & financials (FY2024)
From The William & Flora Hewlett Foundation's IRS Form 990. Assets show capacity; the giving rate shows how actively they deploy it (a private foundation must pay out ~5%/yr) — useful for sizing your ask.
Leadership & board
Officers, directors & key staff from The William & Flora Hewlett Foundation's IRS Form 990 (Part VII).
Who does the The William & Flora Hewlett Foundation fund?
The The William & Flora Hewlett Foundation is a private foundation that awards grants primarily in CA, DC, NY. According to its most recent IRS Form 990-PF filing (FY2024), it paid about $625M across 2,001 grants, concentrated in Environment, Education, Community Development and Arts Culture.
What types of organizations does the The William & Flora Hewlett Foundation fund?
The The William & Flora Hewlett Foundation's recent grants went to nonprofits and institutions working in Environment, Education, Community Development and Arts Culture. Recent recipients include Stichting European Climate Foundation, Stichting European Climate Foundation, Stichting European Climate Foundation. Because giving is reported in aggregate on the 990-PF, the best signal of fit is the funder's giving history below.
How much does the The William & Flora Hewlett Foundation give, and what is a typical grant?
In FY2024, the The William & Flora Hewlett Foundation awarded about $625M across 2,001 grants — an average grant of about $312K and a median of about $150K.
Where does the The William & Flora Hewlett Foundation award grants?
The The William & Flora Hewlett Foundation awards grants primarily in CA, DC, NY, based on the locations of the recipient organizations in its 990-PF giving records.
Does the The William & Flora Hewlett Foundation accept unsolicited grant applications?
Like most private foundations, the The William & Flora Hewlett Foundation generally does not publish an open application cycle — many fund by invitation or through existing relationships. This profile reflects the funder's giving history from public IRS Form 990-PF filings, not an open call for proposals. Always confirm the The William & Flora Hewlett Foundation's current guidelines before reaching out.
Who are recent The William & Flora Hewlett Foundation grant recipients?
Recent The William & Flora Hewlett Foundation grant recipients include Stichting European Climate Foundation ($11M); Stichting European Climate Foundation ($11M); Stichting European Climate Foundation ($11M); Climate Leadership Initiative INC ($10M); Climateworks Foundation ($10M); Amalgamated Charitable Foundation INC ($10M). The full recipient list and giving history are available on GrantSonar.
Example The William & Flora Hewlett Foundation grant recipients
A sample from the funder's 990-PF giving records. The full list is on GrantSonar.
| Stichting European Climate Foundation | $11M |
| Stichting European Climate Foundation | $11M |
| Stichting European Climate Foundation | $11M |
| Climate Leadership Initiative INCCA | $10M |
| Climateworks FoundationCA | $10M |
| Amalgamated Charitable Foundation INCDC | $10M |
| Humboldt Area FoundationCA | $10M |
| Amalgamated Charitable Foundation INCDC | $10M |
Based on the The William & Flora Hewlett Foundation's public IRS Form 990-PF filings (most recent: FY2024). 990 data reflects giving history and typically lags 1–2 years; it is not an open call for proposals. Always confirm the funder's current guidelines before applying.
Built from 236,000+ U.S. grantmaking foundations and 4.6 million itemized grant records in public IRS Form 990 / 990-PF filings (135,000+ funders with itemized giving history).
See if the The William & Flora Hewlett Foundation fits your organization
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