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California · Private foundation

Peter E Sills Family Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$110k
Granted FY2025(still arriving)
12
Grants FY2025
6
Organizations funded FY2024
0%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$10,000
Largest grant, FY2025
$30,000
Organizations funded a year
2 to 9
FY2017 to FY2024
States reached, FY2025
1
Total assets, FY2025
$692k
Applications
Takes unsolicited applications
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 0% of the organizations Peter E Sills Family Foundation funded were first-time grantees, receiving 0% of its grant dollars.

New vs renewed · share of each year

In FY2024, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

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

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

’19’20’21’22’23’24
Youth DevelopmentOther
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 arriving12$110k42%
FY20246$50k0%
FY20233$28k33%
FY20226$50k0%
FY20219$70k33%
FY20202$23k0%
FY20196$23k17%
FY20176$30kn/a
98% classified

What it funded, over time

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

Youth Development$250kHealth$75kEducation$48kHousing & Shelter$16kRecreation & Sports$5kOther$0

Top grantees

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

Plus 8 recipients with no EIN on record ($88k), 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 tightly interlocked group: most of these funders back each other's grantees too.

American Online Giving Foundation IncDE7.8× affinity4 shared granteesties to 3 of 3Hover any node to trace its alignments.Compare side by side →

Open a dossier: 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 Peter E Sills Family Foundation with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to Peter E Sills Family Foundation?

Find your warmest path to Peter E Sills Family Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

About Peter E Sills Family Foundation

How much does Peter E Sills Family Foundation give?
Peter E Sills Family Foundation reported 12 grants totaling $110,000 in its FY2025 IRS filing. It funded between 2 and 9 organizations a year over FY2017 to FY2024.
What does Peter E Sills Family Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Youth Development (63%), Health (19%), Education (12%).
Who are Peter E Sills Family Foundation's largest grantees?
By total granted over FY2017 to FY2025: Boys and Girls Club of Tracy ($141k), George Mark Childrens Fund ($36k), The Painted Turtle ($36k).
Does Peter E Sills Family Foundation fund new organizations?
In FY2024, 0% of the organizations it funded were first-time grantees.
Does Peter E Sills Family Foundation accept unsolicited applications?
Its most recent filing reports that it accepts unsolicited grant applications.
Which funders back the same organizations as Peter E Sills Family Foundation?
Its strongest co-funders, measured against what their size predicts, include American Online Giving Foundation Inc, Donor Advised Charitable Giving Inc, Fidelity Investments Charitable Gift Fund.
Where is Peter E Sills Family Foundation based?
Peter E Sills Family 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 17 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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