William H Miller III Foundation Inc
William H Miller III Foundation Inc is a nonprofit organization focused on Philanthropy, Voluntarism & Grantmaking, based in West Palm Beach, FL. IRS filing data is available from 2022 through 2025. In 2025, it awarded 5 grants totaling $7.9M.
Key facts about William H Miller III Foundation Inc
- EIN
- 92-1047594
- Latest 990 filing
- Form 990-PF, 2025
- Annual giving (2025)
- $7,914,125
- Grants made (2025)
- 5
- Average grant
- $1,582,825
- Median grant
- $50,000
- Primary geography
- New Mexico (98% of itemized 2025 grant dollars)
Data from IRS Form 990-PF, 2025; updated September 2026.
Who William H Miller III Foundation Inc funds
By grant dollars, the top recipient states for William H Miller III Foundation Inc's 5 itemized 2025 grants were New Mexico (98%). The most frequent recipient cities were Baltimore, MD (2 grants). 100% of grants with a stated purpose were for general or operating support.
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Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
—
Annual Giving
$7.9M
+445.8% YoY
Grant Count
5
+25.0% YoY
Avg Grant Size
$1.6M
+336.6% YoY
About William H Miller III Foundation Inc
Based on IRS filings
William H Miller III Foundation Inc is a nonprofit organization focused on Philanthropy, Voluntarism & Grantmaking, based in West Palm Beach, FL. IRS filing data is available from 2022 through 2025. In 2025, it awarded 5 grants totaling $7.9M.
Focus Areas
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of all 5 itemized 2025 grant dollars.
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | — | — | — |
| Revenue | — | — | — |
| Expenses | — | — | — |
| Qualifying Distributions | — | — | — |
| Net Investment Income | — | — | — |
| Distributable Amount | — | — | — |
Data update history
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2022 (received by the IRS November 14, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS November 5, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 15, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 13, 2026)
- IRS filings on file for fiscal years 2022–2024
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 5 recipients in 2025
Grant Size Distribution
10 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2025 grants, the largest recipients include Santa Fe Institute ($7,724,125), Stanford University - Leland Stanford Junior University ($100,000), Barcs ($50,000).
| Recipient | Purpose | Amount |
|---|---|---|
| SANTA FE INSTITUTE Santa Fe, NM | GENERAL SUPPORT | $7,724,125 |
| STANFORD UNIVERSITY - LELAND STANFORD JUNIOR UNIVERSITY Standford, CA | GENERAL SUPPORT | $100,000 |
| BARCS Baltimore, MD | GENERAL SUPPORT | $50,000 |
| AHA FOUNDATION Bethesda, MD | GENERAL SUPPORT | $25,000 |
| UNITED WAY OF CENTRAL MARYLAND Baltimore, MD | GENERAL SUPPORT | $15,000 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
No officer or director reported compensation in the available filings.
From 2025 IRS filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| William H Miller III | Chairman, Director | — | — |
| Kristi Adkins | Treasurer, Director | — | — |
| Heather Miller | President, Director | — | — |
| Justine Harrison | Secretary, Director | — | — |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is William H Miller III Foundation Inc?
William H Miller III Foundation Inc is a nonprofit organization focused on Philanthropy, Voluntarism & Grantmaking, based in West Palm Beach, FL. It holds — in total assets as of 2025.
Where does William H Miller III Foundation Inc operate?
William H Miller III Foundation Inc has awarded grants in California, Maryland, New Mexico, New York.
What size grants does William H Miller III Foundation Inc award?
In 2025, William H Miller III Foundation Inc awarded 5 grants totaling $7.9M — an average of about $1.6M per grant, based on its IRS Form 990 filings.
What is William H Miller III Foundation Inc's EIN?
William H Miller III Foundation Inc's EIN (Employer Identification Number) is 92-1047594. IRS Form 990 filing data is available on this page for 2022–2025.
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Data last updated September 2026. Sourced from IRS Form 990-PF filings.