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California · Private foundation

Windy Bay Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$1.5M
Granted FY2025(still arriving)
10
Grants FY2025
9
Organizations funded FY2024
22%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$50,000
Largest grant, FY2025
$1,000,000
Organizations funded a year
3 to 9
FY2017 to FY2024
States reached, FY2025
4
Total assets, FY2025
$1.5M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 22% of the organizations Windy Bay Foundation funded were first-time grantees, receiving 86% of its grant dollars.

New vs renewed · share of each year

In FY2024, 14% of grant dollars renewed an existing relationship; $305k went to new ones.

50%100%’18’19’20’21’23’24
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’18’19’20’21’23’24
InternationalHealthHuman ServicesPhilanthropyEnvironmentArts & CultureOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving8$1.5M50%
FY20249$356k22%
FY20239$139k100%
FY20214$58k75%
FY20207$61k71%
FY20197$106k86%
FY20183$104k67%
FY20175$151kn/a
97% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Education$1.9MPhilanthropy$209kHealth$150kRecreation & Sports$100kArts & Culture$50kInternational$34kPublic Safety & Disaster$24kFood & Nutrition$11kOther$0

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 19 grantees

Plus 17 recipients with no EIN on record ($409k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Windy Bay Foundation supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetPartnership for Haas Preeminence: $200,000 over 2y, 1.3% of budgetSt Helena Hospital Foundation: $100,000 over 2y, 1.5% of budgetPlanned Parenthood Federation of America Inc: $36,000 over 2y, 0.0% of budgetWorld Central Kitchen Inc: $13,500 over 3y, 0.0% of budgetMedecins Sans Frontieres USA Inc: $13,500 over 3y, 0.0% of budgetUnited States Fund for Unicef: $10,523 over 2y, 0.0% of budgetFriends of the World Food Program Inc: $10,500 over 2y, 0.0% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches: $10,500 over 2y, 0.0% of budgetNapa Medical Research Foundation: $10,500 over 3y, 0.9% of budgetEye Surgeons International: $10,000 over 2y, 0.4% of budgetCommunity Action of Napa Valley: $6,000 over 1y, 0.1% of budgetCristosal Inc: $5,000 over 1y, 0.3% of budgetPepperwood Foundation: $2,500 over 1y, 0.0% of budgetOn Lok Inc: $2,000 over 1y, 0.0% of budgetWorldreaderorg: $1,000 over 1y, 0.0% of budgetSunrise Movement: $200 over 1y, 0.0% of budgetKqed Inc: $100 over 1y, 0.0% of budgetMercy Ships International: $50 over 1y, 0.0% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 18.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Marin Community FoundationCA14.9× affinity5 shared granteesties to 8 of 8Hover any node to trace its alignments.Compare side by side →

Open a dossier: Marin Community Foundation · The Gamble Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · American Endowment Foundation · National Philanthropic Trust · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare Windy Bay Foundation with peer funders

About Windy Bay Foundation

How much does Windy Bay Foundation give?
Windy Bay Foundation reported 10 grants totaling $1,521,270 in its FY2025 IRS filing. It funded between 3 and 9 organizations a year over FY2017 to FY2024.
What does Windy Bay Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Education (74%), Philanthropy (8%), Health (6%).
Who are Windy Bay Foundation's largest grantees?
By total granted over FY2017 to FY2025: St Helena Unified School District ($1.7M), Partnership for Haas Preeminence ($200k), St Helena Hospital Foundation ($100k).
Does Windy Bay Foundation fund new organizations?
In FY2024, 22% of the organizations it funded were first-time grantees.
Does Windy Bay Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Windy Bay Foundation?
Its strongest co-funders, measured against what their size predicts, include Marin Community Foundation, The Gamble Foundation, Gs Donor Advised Philanthropy Fund for Wealth Management Inc.
Where is Windy Bay Foundation based?
Windy Bay Foundation is based in CA.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 37 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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