Windfall Foundation
Windfall Foundation is a private foundation, based in Denver, CO. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $275K in total assets. Net investment income was $31K.
Windfall Foundation at a glance
- Total assets
- $274,829
- +12.9% vs 2024
- Revenue (2025)
- $31,360
- +122.6% vs 2024
- Net investment income (2025)
- $31,360
- +122.6% vs 2024
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Windfall Foundation funds
How this funder distributes its grants
Grant Size Distribution
4 grants across all recorded years
The most common grant size was under $50K: 4 grants of 4 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
How Windfall Foundation gives
- Giving held roughly steady from 2020 to 2023 (+0%). Method
- In 2023 it paid out 10% 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
From 2020 to 2023, annual grant giving ranged from $1K (2020) to $24K (2021). In 2023 it made 1 grant totaling $1K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Institute of American Acupuncture Webster Groves, MO | General operating expenses | $1,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $274,829 | $31,360 | — | — | — | — | $31,360 | $12,414 |
| 2024 | $243,469 | $14,087 | — | — | — | — | $14,087 | $11,328 |
| 2023 | $220,017 | $4,917 | $1,000 | $1,000 | 1 | $1,000 | $23,135 | $10,214 |
| 2022 | $216,100 | $15,325 | $7,000 | $7,000 | 1 | $7,000 | $12,825 | $10,810 |
| 2021 | $247,939 | $11,068 | $24,000 | $24,000 | 2 | $24,000 | $11,068 | — |
| 2020 | $260,871 | $6,291 | $1,000 | $1,000 | 1 | — | $6,291 | $12,149 |
Under IRS private-foundation payout rules, Windfall Foundation reported a distributable amount of $12K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Windfall Foundation is led by Shelby Miller, President on every filing since 2020; none of the 3 officers listed in 2025 report compensation.
Officers on the 2025 filing
Shelby Miller
President
On filings since 2020
1 hr/week
No compensation reported
Denver Miller
Vice President
On filings since 2020
No compensation reported
Karin Wikstrom Miller
Secretary Treasurer
Secretary & Treasurer → Secretary Treasurer, 2021
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 Windfall Foundation
How large is Windfall Foundation?
Windfall Foundation reported $275K in total assets on its 2025 IRS Form 990-PF. Its revenue that year was $31K.
Where does Windfall Foundation operate?
Windfall Foundation has awarded grants in Colorado, Missouri, New Mexico.
How much is Windfall Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2025, Windfall Foundation reported a distributable amount of $12K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Windfall Foundation's EIN?
Windfall Foundation's EIN (Employer Identification Number) is 85-0405670. 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
- Updated Form 990-PF for fiscal year 2020 (received by the IRS May 17, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 14, 2022)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 15, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 11, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS March 12, 2026)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 10, 2023)
- IRS filings on file for fiscal years 2020–2025
Explore Open Grants
Browse active grant opportunities in Windfall Foundation's focus areas in our free grants database
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Figures come from Windfall Foundation'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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