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California · Private foundation

The David and Heidi Welch 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.

$24k
Granted FY2025(still arriving)
6
Grants FY2025
3
Organizations funded FY2024
33%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$5,000
Largest grant, FY2025
$5,000
Organizations funded a year
3 to 8
FY2018 to FY2024
States reached, FY2025
2
Total assets, FY2025
$9k
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 33% of the organizations The David and Heidi Welch Foundation funded were first-time grantees, receiving 2% of its grant dollars.

New vs renewed · share of each year

In FY2024, 98% of grant dollars renewed an existing relationship; $1k went to new ones.

50%100%’18’19’20’21’22’23’24
RenewedFirst-time

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

’18’19’20’21’22’23’24
EducationEnvironmentPhilanthropyYouth DevelopmentInternationalCivil RightsOther
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 arriving5$22k60%
FY20243$66k33%
FY20235$185k60%
FY20224$70k25%
FY20218$90k38%
FY20207$55k14%
FY20196$31k33%
FY20187$436k71%
100% classified

What it funded, over time

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

Environment$679kEducation$351kCivil Rights$220kCommunity Improvement$108kYouth Development$55kReligion$28kHealth$22kInternational$14kOther$0

Top grantees

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

GranteeTotal grantedYearsShare of their budget
Natural Resources Defense Council Inc$661,50050%
Students Matter$200,0001n/a
The Caltech Y$120,00026%
Nosterra Ventures$108,428113%
University of Delaware$58,87410%
Boys & Girls Clubs of the Peninsula$45,00070%
St Joseph's Peruvian Mission$31,71031%
Cornell University$20,00020%
Teach for America Inc$20,00040%
CalMatters$20,00040%
Show all 20 grantees
All grantees of The David and Heidi Welch Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Natural Resources Defense Council Inc$661,50050%
Students Matter$200,0001n/a
The Caltech Y$120,00026%
Nosterra Ventures$108,428113%
University of Delaware$58,87410%
Boys & Girls Clubs of the Peninsula$45,00070%
St Joseph's Peruvian Mission$31,71031%
Cornell University$20,00020%
Teach for America Inc$20,00040%
CalMatters$20,00040%
The Ocean Foundation$10,00010%
Kipp Bay Area Schools$10,00020%
Soulsville Foundation$7,76810%
Peninsula Open Space Trust$7,00020%
Human Rights Watch Inc$5,00010%
College Track$5,00010%
Kqed Inc$5,00010%
Aspire Foundation$5,0001n/a
The Michael J Fox Foundation for Parkinson's Research$1,25010%
Riekes Center for Human Enhancement$1,00010%

What it could do for these grantees

Plus 4 recipients with no EIN on record ($54k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget The David and Heidi Welch Foundation supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetNatural Resources Defense Council Inc: $661,500 over 5y, 0.2% of budgetThe Caltech Y: $120,000 over 2y, 6.0% of budgetNosterra Ventures: $108,428 over 1y, 13% of budgetUniversity of Delaware: $58,874 over 1y, 0.0% of budgetBoys & Girls Clubs of the Peninsula: $45,000 over 7y, 0.0% of budgetSt Joseph's Peruvian Mission: $31,710 over 3y, 0.8% of budgetCornell University: $20,000 over 2y, 0.0% of budgetTeach for America Inc: $20,000 over 4y, 0.0% of budgetCalMatters: $20,000 over 4y, 0.1% of budgetThe Ocean Foundation: $10,000 over 1y, 0.1% of budgetKipp Bay Area Schools: $10,000 over 2y, 0.0% of budgetSoulsville Foundation: $7,768 over 1y, 0.2% of budgetPeninsula Open Space Trust: $7,000 over 2y, 0.0% of budgetHuman Rights Watch Inc: $5,000 over 1y, 0.0% of budgetCollege Track: $5,000 over 1y, 0.0% of budgetKqed Inc: $5,000 over 1y, 0.0% of budgetThe Michael J Fox Foundation for Parkinson's Research: $1,250 over 1y, 0.0% of budgetRiekes Center for Human Enhancement: $1,000 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.

National Philanthropic TrustPA8.3× affinity4 shared granteesties to 5 of 5Hover any node to trace its alignments.Compare side by side →

Open a dossier: National Philanthropic Trust · Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · 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 The David and Heidi Welch Foundation with peer funders

About The David and Heidi Welch Foundation

How much does The David and Heidi Welch Foundation give?
The David and Heidi Welch Foundation reported 6 grants totaling $24,000 in its FY2025 IRS filing. It funded between 3 and 8 organizations a year over FY2018 to FY2024.
What does The David and Heidi Welch Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Environment (46%), Education (24%), Civil Rights (15%).
Who are The David and Heidi Welch Foundation's largest grantees?
By total granted over FY2017 to FY2025: Natural Resources Defense Council Inc ($662k), Students Matter ($200k), The Caltech Y ($120k).
Does The David and Heidi Welch Foundation fund new organizations?
In FY2024, 33% of the organizations it funded were first-time grantees.
Does The David and Heidi Welch 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 The David and Heidi Welch Foundation?
Its strongest co-funders, measured against what their size predicts, include National Philanthropic Trust, Vanguard Charitable Endowment Program, American Online Giving Foundation Inc.
Where is The David and Heidi Welch Foundation based?
The David and Heidi Welch 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 26 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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