Sandstone Foundation Inc

Private foundation · Grantmaker Milwaukee, WI EIN: 26-1591945

Sandstone Foundation Inc is a private foundation based in Milwaukee, Wisconsin. In its 2025 filing, it reported making 10 grants totaling $100,700, all for program support.

Sandstone Foundation Inc at a glance

In short: Sandstone Foundation Inc gave $101K across 10 grants in 2025 (avg $10K), mostly in Wisconsin. 10% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.

Annual giving (2025)
$100,700
+183.7% vs 2024
Grants made (2025)
10
+66.7% vs 2024
Average grant
$10,070
+70.2% vs 2024
Median grant
$2,250
Total assets
$80,568
-55.6% vs 2024
New grantees (estimate)
10% first-time grantees (1 of 10, 2025; small sample)
Primary geography
Wisconsin (97% of itemized 2025 grant dollars)
Latest 990 filing
Form 990-PF, 2025 View filing

Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).

How to apply to Sandstone Foundation Inc

Accepts unsolicited proposals
No
How to Apply

The foundation does not accept unsolicited requests for funds and states that it makes contributions only to preselected charitable organizations.

Contact

Mailing address: 223 North Water Street 500, Milwaukee, WI 53202
Phone: (414) 297-5743

Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.

Who Sandstone Foundation Inc funds

How this funder distributes its grants

Top Recipients

Top 10 recipients in 2025

GPS Education Partners: $35KGPS Education Partners$35KMuseum of Wisconsin Art: $30KMuseum of Wisconsin Art$30KMilwaukee Institute of Art and Design Inc: $20KMilwaukee Institute of Art andDesign Inc$20KMilwaukee Art Museum: $5KMilwaukee Art Museum$5KUrban Ecology Center Inc: $3KUrban Ecology Center Inc$3KEconomics Wisconsin: $2KEconomics Wisconsin$2KMilwaukee School of Engineering: $2KMilwaukee School ofEngineering$2KSojourner Truth House Inc: $2KSojourner Truth House Inc$2KMeta House Inc: $1KMeta House Inc$1KSt George Village Botanical Garden of St Croix Inc: $1KSt George Village BotanicalGarden of St Croix Inc$1K

The largest 2025 recipient was GPS Education Partners ($35K). Together the top 10 received $101K.

Grant Size Distribution

24 grants across all recorded years

24<$50K$50–100K$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 24 grants of 24 (100%).

Geographic Focus

Where this funder awards grants

In 2025, 97% of grant dollars went to recipients in Wisconsin, 2% to recipients in Indiana, and 1% to recipients in the U.S. Virgin Islands.

Grant Distribution by State

3states

Share of 2025 grant dollars across all 10 itemized grants.

States

IndianaU.S. Virgin IslandsWisconsin

Cities

MilwaukeeSaint CroixMequonWaukeshaWest BendButlerFrederikstedHobart

Is Sandstone Foundation Inc open to new grantees?

10%

first-time grantees, 2025

In 2025, 1 of 10 grantees (10%) were first-time recipients. With only 10 grantees, that is a small sample: one grantee more or less moves the share by about 10 points. First grants averaged $2K; repeat grants $11K. How we count

Medians: $2K first-time, $3K repeat.

  • 40% of 2025 grantees were also funded in 2024. Method
  • In 2025 it paid out well above its IRS minimum distribution (the 5% rule). Method

Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.

Giving History

Giving Over Time

Total grant dollars and number of grants per year

$0$50K$100K$150K10 grants2020 0 grants2021 0 grants2022 8 grants2023 6 grants2024 10 grants2025

From 2020 to 2025, annual grant giving ranged from $5K (2020) to $101K (2025). In 2025 it made 10 grants totaling $101K.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
GPS Education Partners Waukesha, WIProgram Support$35,000
Museum of Wisconsin Art West Bend, WIProgram Support$30,200
Milwaukee Institute of Art and Design Inc Milwaukee, WIProgram Support$20,000
Milwaukee Art Museum Milwaukee, WIProgram Support$5,000
Urban Ecology Center Inc Milwaukee, WIProgram Support$2,500
Economics Wisconsin Mequon, WIProgram Support$2,000
Milwaukee School of Engineering Milwaukee, WIProgram Support$2,000
Sojourner Truth House Inc Hobart, INProgram Support$2,000
Meta House Inc Milwaukee, WIProgram Support$1,000
St George Village Botanical Garden of St Croix Inc Saint Croix, VIProgram Support$1,000
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Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsQualifying DistributionsDistributable Amount
2025$80,568—$100,700$100,70010$100,700$6,788
2024$181,268$25,000$35,500$35,5006$35,500$8,680
2023$191,768$150,000$28,091$28,0008$28,045$3,604
2022$69,859$50,000$110——$55$2,212
2021$19,969—$1,417——$709$1,018
2020$21,386$25,000$6,953$5,00010—$607

Under IRS private-foundation payout rules, Sandstone Foundation Inc reported a distributable amount of $7K for 2025 — the minimum it must pay out in qualifying distributions.

Research compiled by Grantable AI from public sources. Last updated September 2026.

Mission & Focus Areas

No mission statement for the foundation is provided. Its 2025 grants went to organizations working in areas including work-based learning, visual arts, environmental connection, engineering and higher education, and services for women and families.

GPS Education Partners describes its mission as providing and advocating for work-based learning solutions, with a focus on access and equity for students preparing for future jobs. The Museum of Wisconsin Art says it celebrates Wisconsin’s visual arts and artists through activities including collecting, exhibiting, and promoting understanding of the arts. The Milwaukee Art Museum describes its work as collecting, preserving, and presenting art, while also educating people and supporting emerging arts and artists.

The Urban Ecology Center says it connects people in cities to nature and each other. Milwaukee School of Engineering describes itself as a nonprofit university providing undergraduate and graduate education in several disciplines. Sojourner Truth House says it serves homeless and at-risk women and their children in Gary, Indiana. Meta House describes its work as ending the generational cycle of addiction by healing women and strengthening families.

Grantmaking

In filing year 2025, the foundation gave $100,700 through 10 grants. Grant amounts ranged from $1,000 to $35,000, with a median grant of $2,250. The largest awards were $35,000 to GPS Education Partners in Waukesha, Wisconsin; $30,200 to the Museum of Wisconsin Art in West Bend, Wisconsin; and $20,000 to the Milwaukee Institute of Art and Design in Milwaukee. Each was designated for program support.

Other 2025 grants included $5,000 to the Milwaukee Art Museum; $2,500 to the Urban Ecology Center; $2,000 each to Economics Wisconsin, Milwaukee School of Engineering, and Sojourner Truth House; and $1,000 each to Meta House and St George Village Botanical Garden of St Croix.

Leadership & Key People

Leadership team and compensation from IRS filings

The 2025 filing lists Lawrence P Moon as president/treasurer and Judith T Moon as secretary.

Sandstone Foundation Inc is led by Lawrence P. Moon, President & Treasurer on every filing since 2020; none of the 2 officers listed in 2025 report compensation.

Officers on the 2025 filing

  • Lawrence P. Moon

    President & Treasurer

    On filings since 2020

    0.5 hrs/week

    No compensation reported

  • Judith T. Moon

    Secretary

    On filings since 2020

    0.5 hrs/week

    No compensation reported

Former officers (1)
  • Former: Joseph A. Carlson (2020–2024) — Vice President

Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.

Frequently asked questions about Sandstone Foundation Inc

How much does Sandstone Foundation Inc give each year?

Sandstone Foundation Inc gave $101K across 10 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $36K across 6 grants.

What is Sandstone Foundation Inc's typical grant size?

Sandstone Foundation Inc's median grant in 2025 was $2,250, and its average grant was $10,070, across 10 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Sandstone Foundation Inc that year got $2K on average.

Where does Sandstone Foundation Inc give grants?

Sandstone Foundation Inc gives mostly in Wisconsin: 97% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Milwaukee, WI (5 grants).

Does Sandstone Foundation Inc give general operating support?

Not in 2025: none of the 10 grants with a stated purpose on Sandstone Foundation Inc's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Program Support" (10 grants).

Who are Sandstone Foundation Inc's largest grantees?

Sandstone Foundation Inc's largest 2025 grantees include GPS Education Partners ($35,000), Museum of Wisconsin Art ($30,200) and Milwaukee Institute of Art and Design Inc ($20,000), according to its 2025 IRS Form 990-PF. Together they received 85% of its itemized 2025 grant dollars.

How large is Sandstone Foundation Inc?

Sandstone Foundation Inc reported $81K in total assets on its 2025 IRS Form 990-PF. It paid out $101K in qualifying distributions that year, against a required minimum of $7K (roughly 5% of its investment assets).

What does Sandstone Foundation Inc fund?

No mission statement for the foundation is provided. Its 2025 grants went to organizations working in areas including work-based learning, visual arts, environmental connection, engineering and higher education, and services for women and families. See mission & focus areas ↑

How do I apply for a grant from Sandstone Foundation Inc?

The foundation does not accept unsolicited requests for funds and states that it makes contributions only to preselected charitable organizations. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑

What is Sandstone Foundation Inc's EIN?

Sandstone Foundation Inc's EIN (Employer Identification Number) is 26-1591945. IRS Form 990 filing data is available on this page for 2020–2025.

Does Sandstone Foundation Inc accept unsolicited proposals?

No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑

Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.

Data update history

(2)

When this profile's IRS filing data changed on Grantable

  1. Added Form 990-PF for fiscal year 2025 (received by the IRS August 4, 2026)
  2. IRS filings on file for fiscal years 2020–2024

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Cite this profile

Grantable. (2026). Sandstone Foundation Inc funder profile. GrantGraph. Retrieved October 16, 2026, from https://grantable.co/funders/sandstone-foundation-inc-morg_abc715a61e254b96a9efde197326f168

BibTeX
@misc{grantable_261591945_2026,
  author       = {{Grantable}},
  title        = {{Sandstone Foundation Inc funder profile}},
  howpublished = {GrantGraph},
  year         = {2026},
  url          = {https://grantable.co/funders/sandstone-foundation-inc-morg_abc715a61e254b96a9efde197326f168},
  note         = {Accessed 2026-10-16. Data licensed CC BY 4.0}
}

The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.

Figures come from Sandstone Foundation Inc's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.

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