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Missouri · Private foundation

The Leah M Sundheimer Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$34k
Granted FY2025(still arriving)
6
Grants FY2025
7
Organizations funded FY2024
43%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$5,000
Largest grant, FY2025
$10,000
Organizations funded a year
2 to 7
FY2021 to FY2024
States reached, FY2025
2
Total assets, FY2025
$597k
Applications
Takes unsolicited applications
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 43% of the organizations The Leah M Sundheimer Foundation funded were first-time grantees, receiving 47% of its grant dollars.

New vs renewed · share of each year

In FY2024, 53% of grant dollars renewed an existing relationship; $18k went to new ones.

50%100%’22’23’24
RenewedFirst-time

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

’22’23’24
Human ServicesHousing & ShelterArts & 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 arriving6$34k50%
FY20247$38k43%
FY20235$35k40%
FY20224$30k50%
FY20212$30kn/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2021 to 2025.

Human Services$89kArts & Culture$58kHousing & Shelter$15kHealth$5k

Top grantees

Largest recipients by total granted, FY2021 to FY2025, and the share of each one’s budget the grants supplied at peak.

Plus 4 recipients with no EIN on record ($33k), 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.

The Floyd a & Frieda S Guynn FoundationMO15.8× affinity5 shared granteesties to 7 of 7Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Floyd a & Frieda S Guynn Foundation · Ford Meter Box Foundation Inc · Aws Foundation Inc · Natl Christian Charitable Fdn Inc · 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 The Leah M Sundheimer Foundation with peer funders

About The Leah M Sundheimer Foundation

How much does The Leah M Sundheimer Foundation give?
The Leah M Sundheimer Foundation reported 6 grants totaling $34,000 in its FY2025 IRS filing. It funded between 2 and 7 organizations a year over FY2021 to FY2024.
What does The Leah M Sundheimer Foundation fund?
By grant dollars over FY2021 to FY2025, its largest causes are Human Services (53%), Arts & Culture (35%), Housing & Shelter (9%).
Who are The Leah M Sundheimer Foundation's largest grantees?
By total granted over FY2021 to FY2025: The Honeywell Foundation Inc ($35k), White's Residential & Family Services Inc ($33k), St Anne's Retirement Communityinc ($25k).
Does The Leah M Sundheimer Foundation fund new organizations?
In FY2024, 43% of the organizations it funded were first-time grantees.
Does The Leah M Sundheimer Foundation accept unsolicited applications?
Its most recent filing reports that it accepts unsolicited grant applications.
Which funders back the same organizations as The Leah M Sundheimer Foundation?
Its strongest co-funders, measured against what their size predicts, include The Floyd a & Frieda S Guynn Foundation, Ford Meter Box Foundation Inc, Aws Foundation Inc.
Where is The Leah M Sundheimer Foundation based?
The Leah M Sundheimer Foundation is based in MO.

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 12 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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