Duncan Louis Stewart Foundation Inc

Private foundation · Grantmaker Lake Geneva, WI EIN: 46-5608356

Duncan Louis Stewart Foundation Inc is a private foundation, based in Lake Geneva, WI. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $2.3M in total assets. In 2025, it awarded 4 grants totaling $125K. Net investment income was $81K.

Duncan Louis Stewart Foundation Inc at a glance

In short: Duncan Louis Stewart Foundation Inc gave $125K across 4 grants in 2025 (avg $31K), mostly in District of Columbia. Source: 2025 IRS Form 990-PF.

Annual giving (2025)
$125,000
+16.8% vs 2024
Grants made (2025)
4
+33.3% vs 2024
Average grant
$31,250
-12.4% vs 2024
Median grant
$10,000
Total assets
$2,275,121
-1.4% vs 2024
Primary geography
District of Columbia (80% of itemized 2025 grant dollars)
Latest 990 filing
Form 990-PF, 2025 View filing

Data from IRS Form 990-PF, 2025; updated September 2026.

Who Duncan Louis Stewart Foundation Inc funds

How this funder distributes its grants

Top Recipients

Top 4 recipients in 2025

Fauna & Flora: $100KFauna & Flora$100KCharities Aid Foundation American Donor Fund: $15KCharities Aid FoundationAmerican Donor Fund$15KFriends of the Environment: $5KFriends of the Environment$5KWisconsin's Green Fire: $5KWisconsin's Green Fire$5K

The largest 2025 recipient was Fauna & Flora ($100K). Together the top 4 received $125K.

Grant Size Distribution

20 grants across all recorded years

17<$50K2$50–100K1$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 17 grants of 20 (85%).

Geographic Focus

Where this funder awards grants

Grant Distribution by State

6states

Share of 2025 grant dollars across all 4 itemized grants.

Cities

RhinelanderDelaray BeachViennaPortlandCableMadisonNew YorkWarrentonWashington

How Duncan Louis Stewart Foundation Inc gives

  • Giving grew 762% from 2022 to 2025. Method
  • In 2025 it paid out 97% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method

From the foundation's IRS Form 990-PF filings. Methodology.

Giving History

Giving Over Time

Total grant dollars and number of grants per year

$0$50K$100K$150K5 grants2020 5 grants2021 4 grants2022 4 grants2023 3 grants2024 4 grants2025

From 2020 to 2025, annual grant giving ranged from $15K (2022) to $125K (2025). In 2025 it made 4 grants totaling $125K.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
Fauna & Flora Washington, DCGeneral$100,000
Charities Aid Foundation American Donor Fund General$15,000
Friends of the Environment Delaray Beach, FLGeneral$5,000
Wisconsin's Green Fire Rhinelander, WIGeneral$5,000
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Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsQualifying DistributionsNet Investment IncomeDistributable Amount
2025$2,275,121$139,990$154,217$125,0004$125,000$81,355$128,814
2024$2,307,352$405,509$130,317$107,0003$107,000$346,902$116,034
2023$2,013,769$130,388$123,869$104,0004$104,000$76,954$106,696
2022$2,007,448$41,671$35,243$14,5004$14,500$31,308$103,351
2021$1,999,893$76,489$96,380$65,1005$65,100$28,982$112,428
2020$2,021,989$13,740$125,415$103,0005—$11,617$98,199

Under IRS private-foundation payout rules, Duncan Louis Stewart Foundation Inc reported a distributable amount of $129K for 2025 — the minimum it must pay out in qualifying distributions.

Leadership & Key People

Officers and directors from IRS filings

Duncan Louis Stewart Foundation Inc is led by Walter W. Bell, President & Director on every filing since 2020; none of the 4 officers listed in 2025 report compensation.

Officers on the 2025 filing

  • Walter W. Bell

    President & Director

    On filings since 2020

    No compensation reported

  • Eoin M. Dempsey

    Treasurer & Director

    On filings since 2020

    No compensation reported

  • Kimberly C. Louis Stewart

    Director

    On filings since 2020

    No compensation reported

  • W. David Stewart

    Director

    On filings since 2020

    No compensation reported

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 Duncan Louis Stewart Foundation Inc

How much does Duncan Louis Stewart Foundation Inc give each year?

Duncan Louis Stewart Foundation Inc gave $125K across 4 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $107K across 3 grants.

What is Duncan Louis Stewart Foundation Inc's typical grant size?

Duncan Louis Stewart Foundation Inc's median grant in 2025 was $10,000, and its average grant was $31,250, across 4 grants on its 2025 IRS Form 990-PF.

Where does Duncan Louis Stewart Foundation Inc give grants?

Duncan Louis Stewart Foundation Inc gives mostly in District of Columbia: 80% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there.

Does Duncan Louis Stewart Foundation Inc give general operating support?

Yes: 100% of Duncan Louis Stewart Foundation Inc's 2025 grants with a stated purpose (4 of 4) were for general or operating support, per its 2025 IRS Form 990-PF.

How large is Duncan Louis Stewart Foundation Inc?

Duncan Louis Stewart Foundation Inc reported $2.3M in total assets on its 2025 IRS Form 990-PF. It paid out $125K in qualifying distributions that year, against a required minimum of $129K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.

What is Duncan Louis Stewart Foundation Inc's EIN?

Duncan Louis Stewart Foundation Inc's EIN (Employer Identification Number) is 46-5608356. IRS Form 990 filing data is available on this page for 2020–2025.

Data last updated September 2026. Sourced from IRS Form 990-PF filings.

Data update history

(7)

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2020 (received by the IRS May 14, 2021)
  2. Updated Form 990-PF for fiscal year 2021 (received by the IRS May 10, 2022)
  3. Updated Form 990-PF for fiscal year 2022 (received by the IRS May 5, 2023)
  4. Updated Form 990-PF for fiscal year 2023 (received by the IRS May 13, 2024)
  5. Updated Form 990-PF for fiscal year 2024 (received by the IRS May 8, 2025)
  6. Added Form 990-PF for fiscal year 2025 (received by the IRS May 11, 2026)
  7. IRS filings on file for fiscal years 2020–2024

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The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open

Figures come from Duncan Louis Stewart 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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