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Wisconsin · Private foundation

Sandstone 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.

$101k
Granted FY2025(still arriving)
10
Grants FY2025
6
Organizations funded FY2024
33%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$2,500
Largest grant, FY2025
$35,000
Organizations funded a year
1 to 10
FY2018 to FY2024
States reached, FY2025
3
Total assets, FY2025
$81k
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 Sandstone Foundation Inc funded were first-time grantees, receiving 59% of its grant dollars.

New vs renewed · share of each year

In FY2024, 41% of grant dollars renewed an existing relationship; $21k went to new ones.

50%100%’19’20’23’24
RenewedFirst-time

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

’19’20’23’24
Food & NutritionEnvironmentOther
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 arriving10$101k20%
FY20246$36k33%
FY20238$28k38%
FY202010$5k0%
FY20191$1k0%
FY201810$5kn/a
94% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2018 to 2024.

Arts & Culture$52kEnvironment$9kFood & Nutrition$5kHuman Services$3kEducation$2kSocial Science$2kHealth$1kYouth Development$1kOther$0

Top grantees

Largest recipients by total granted, FY2018 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 12 grantees

What it could do for these grantees

Plus 5 recipients with no EIN on record ($27k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Sandstone Foundation Inc supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetGps Education Partners Inc: $41,000 over 4y, 0.6% of budgetMilwaukee Institute of Art & Design Inc: $40,000 over 3y, 0.1% of budgetMilwaukee Art Museum Inc: $10,500 over 5y, 0.0% of budgetUrban Ecology Center Inc: $8,500 over 5y, 0.0% of budgetFeeding America Eastern Wisconsin Inc: $5,000 over 1y, 0.0% of budgetMilwaukee School of Engineering: $4,000 over 4y, 0.0% of budgetThe St George Village Botanical Garden of St Croix Inc: $3,000 over 3y, 0.1% of budgetMeta House Inc: $2,000 over 2y, 0.0% of budgetSojourner Family Peace Center Inc: $1,500 over 3y, 0.0% of budgetThe Als Association Inc Wisconsin Chapter: $1,000 over 2y, 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 10.

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.

Fidelity Investments Charitable Gift FundMA5.3× affinity4 shared granteesties to 1 of 1Hover any node to trace its alignments.Compare side by side →

Open a dossier: 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 Sandstone Foundation Inc with peer funders

About Sandstone Foundation Inc

How much does Sandstone Foundation Inc give?
Sandstone Foundation Inc reported 10 grants totaling $100,700 in its FY2025 IRS filing. It funded between 1 and 10 organizations a year over FY2018 to FY2024.
What does Sandstone Foundation Inc fund?
By grant dollars over FY2018 to FY2025, its largest causes are Arts & Culture (69%), Environment (12%), Food & Nutrition (7%).
Who are Sandstone Foundation Inc's largest grantees?
By total granted over FY2018 to FY2025: Gps Education Partners Inc ($41k), Milwaukee Institute of Art & Design Inc ($40k), Museum of Wisconsin Art Inc ($30k).
Does Sandstone Foundation Inc fund new organizations?
In FY2024, 33% of the organizations it funded were first-time grantees.
Does Sandstone 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 Sandstone Foundation Inc?
Its strongest co-funders, measured against what their size predicts, include Fidelity Investments Charitable Gift Fund, Amazonsmile Foundation.
Where is Sandstone Foundation Inc based?
Sandstone Foundation Inc is based in WI.

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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