William and Mary Stark Family Foundation
William and Mary Stark Family Foundation is a private foundation, based in Riverhead, NY. IRS filing data is available from 2024 through 2025. As of 2025, the organization holds $3.3M in total assets. In 2025, it awarded 5 grants totaling $215K. Net investment income was $215K.
William and Mary Stark Family Foundation at a glance
In short: William and Mary Stark Family Foundation gave $215K across 5 grants in 2025 (avg $43K), mostly in New York. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $215,000
- Grants made (2025)
- 5
- Average grant
- $43,000
- Median grant
- $50,000
- Total assets
- $3,263,500
- +8.8% vs 2024
- Primary geography
- New York (70% 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 William and Mary Stark Family Foundation funds
How this funder distributes its grants
Top Recipients
Top 5 recipients in 2025
The largest 2025 recipient was Riverhead Ambulance Corp ($50K). Together the top 5 received $215K.
Grant Size Distribution
5 grants across all recorded years
The most common grant size was in the $50–100K range: 4 grants of 5 (80%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 5 itemized grants.
States
Cities
How William and Mary Stark Family Foundation gives
- In 2025 it paid out 144% of its IRS minimum distribution (the 5% rule). 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
In 2025 it made 5 grants totaling $215K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Riverhead Ambulance Corp Riverhead, NY | To provide answering calls for emergency medical assistance, also provides "stand-by" emergency medical coverage for special events such as concerts, sporting events, and other large gatherings of people. | $50,000 |
| Rotary Charities New York, NY | To support salvation army, ym-ywca, boy scouts, columbia presbyterian medical center, madison square boys and girls club, saint agnes soup kitchen, horizon concerts, national association for visually handicapped. | $50,000 |
| Providence College Mens B Providence, RI | To support traditional areas of programming needs, including academic resources, nutrition, travel, equipment and cutting-edge technology for training and high performance. | $50,000 |
| Peconic Bay Medical Center Riverhead, NY | To help to bring the most advanced treatments in heart and stroke care and general surgery. | $50,000 |
| Providence College Friars Athletics Providence, RI | To support traditional areas of programming needs, including academic resources, nutrition, travel, equipment and cutting-edge technology for training and high performance. | $15,000 |
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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 | $3,263,500 | $215,156 | $236,951 | $215,000 | 5 | $215,000 | $215,156 | $149,086 |
| 2024 | $3,000,003 | $3,000,120 | $100 | — | — | $100 | $20 | $11,335 |
Under IRS private-foundation payout rules, William and Mary Stark Family Foundation reported a distributable amount of $149K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
William and Mary Stark Family Foundation is led by Mary Stark, President on every filing since 2024; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Mary Stark
President
On filings since 2024
1 hr/week
No compensation reported
William B. Stark
Chairman & Treasurer
On filings since 2024
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2024–2025. "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 William and Mary Stark Family Foundation
How much does William and Mary Stark Family Foundation give each year?
William and Mary Stark Family Foundation gave $215K across 5 grants in 2025, according to its 2025 IRS Form 990-PF.
What is William and Mary Stark Family Foundation's typical grant size?
William and Mary Stark Family Foundation's median grant in 2025 was $50,000, and its average grant was $43,000, across 5 grants on its 2025 IRS Form 990-PF.
Where does William and Mary Stark Family Foundation give grants?
William and Mary Stark Family Foundation gives mostly in New York: 70% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was Rhode Island (30%). The most frequent recipient cities were Riverhead, NY (2 grants) and Providence, RI (2 grants).
Does William and Mary Stark Family Foundation give general operating support?
Yes: 20% of William and Mary Stark Family Foundation's 2025 grants with a stated purpose (1 of 5) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are William and Mary Stark Family Foundation's largest grantees?
William and Mary Stark Family Foundation's largest 2025 grantees include Riverhead Ambulance Corp ($50,000), Rotary Charities ($50,000) and Providence College Mens B ($50,000), according to its 2025 IRS Form 990-PF. Together they received 70% of its itemized 2025 grant dollars.
How large is William and Mary Stark Family Foundation?
William and Mary Stark Family Foundation reported $3.3M in total assets on its 2025 IRS Form 990-PF. It paid out $215K in qualifying distributions that year, against a required minimum of $149K (roughly 5% of its investment assets).
What is William and Mary Stark Family Foundation's EIN?
William and Mary Stark Family Foundation's EIN (Employer Identification Number) is 33-2281233. IRS Form 990 filing data is available on this page for 2024–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(2)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2024 (received by the IRS November 11, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 13, 2026)
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