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California · Private foundation

Leighton Foundation Inc

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.

$570k
Granted FY2025(still arriving)
45
Grants FY2025
18
Organizations funded FY2024
83%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$12,000
Largest grant, FY2025
$30,000
Organizations funded a year
4 to 18
FY2020 to FY2024
States reached, FY2025
1
Total assets, FY2025
$6.6M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 83% of the organizations Leighton Foundation Inc funded were first-time grantees, receiving 76% of its grant dollars.

New vs renewed · share of each year

In FY2024, 24% of grant dollars renewed an existing relationship; $130k went to new ones.

50%100%’21’22’23’24
RenewedFirst-time

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

’21’22’23’24
Arts & CulturePhilanthropyOther
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 arriving43$570k74%
FY202418$170k83%
FY202310$107k60%
FY202210$136k20%
FY20219$128k78%
FY20204$60kn/a
97% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.

Education$736kArts & Culture$184kCommunity Improvement$94kScience & Tech$50kRecreation & Sports$49kPhilanthropy$20kEnvironment$3kOther$0

Top grantees

Largest recipients by total granted, FY2020 to FY2025, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Uc San Diego Foundation$25,00010%
Teralta Art$20,00029%
Vista Christian School$20,0002n/a
Scripps Ranch Wrestling Booster Clu B$15,0001n/a
San Elijo Middle School Band Booster Club$8,50019%
Turtleback Education Foundation$8,00017%
Willard B Hage Elementary PTA$7,500120%
Wolverine Athletic Foundation$6,80011%
Wildcoast$2,8801n/a

Plus 57 recipients with no EIN on record ($1.1M), not named here.

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 set of overlaps that mostly run through this funder rather than between each other.

Amazonsmile FoundationWA1.8× affinity4 shared granteesties to 0 of 0Hover any node to trace its alignments.Compare side by side →

Open a dossier: 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 Leighton Foundation Inc with peer funders

About Leighton Foundation Inc

How much does Leighton Foundation Inc give?
Leighton Foundation Inc reported 45 grants totaling $569,740 in its FY2025 IRS filing. It funded between 4 and 18 organizations a year over FY2020 to FY2024.
What does Leighton Foundation Inc fund?
By grant dollars over FY2020 to FY2025, its largest causes are Education (63%), Arts & Culture (16%), Community Improvement (8%).
Who are Leighton Foundation Inc's largest grantees?
By total granted over FY2020 to FY2025: Uc San Diego Foundation ($25k), Teralta Art ($20k), Vista Christian School ($20k).
Does Leighton Foundation Inc fund new organizations?
In FY2024, 83% of the organizations it funded were first-time grantees.
Does Leighton Foundation Inc 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 Leighton Foundation Inc?
Its strongest co-funders, measured against what their size predicts, include Amazonsmile Foundation.
Where is Leighton Foundation Inc based?
Leighton Foundation Inc 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 66 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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