The Thornton Foundation
The Thornton Foundation is a private foundation focused on Philanthropy, based in West Palm Beach, FL. IRS filing data is available from 2021 through 2025. As of 2025, the organization holds $411K in total assets. In 2025, it awarded 4 grants totaling $163K. Net investment income was $114K.
The Thornton Foundation at a glance
In short: The Thornton Foundation gave $163K across 4 grants in 2025 (avg $41K), mostly in New York. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $162,641
- Grants made (2025)
- 4
- Average grant
- $40,660
- Median grant
- $23,195
- Total assets
- $410,943
- +1487.6% vs 2024
- Primary geography
- New York (87% 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 The Thornton Foundation funds
How this funder distributes its grants
Top Recipients
Top 4 recipients in 2025
The largest 2025 recipient was Myriad USA ($96K). Together the top 4 received $163K.
Grant Size Distribution
8 grants across all recorded years
The most common grant size was under $50K: 6 grants of 8 (75%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 4 itemized grants.
Cities
How The Thornton Foundation gives
- In 2025 it paid out 55% 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 2021 to 2025, annual grant giving ranged from $93K (2021) to $163K (2025). In 2025 it made 4 grants totaling $163K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Myriad USA New York, NY | General | $96,274 |
| The Morgan Library & Museum New York, NY | General | $25,745 |
| African Mission Healthcare Deland, FL | General | $20,645 |
| Doctors Without Borders New York, NY | General | $19,977 |
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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 | $410,943 | $10,314,480 | $162,691 | $162,641 | 4 | $162,641 | $113,520 | $293,446 |
| 2024 | $25,885 | $5,033 | $349 | — | — | — | $5,033 | $7,810 |
| 2023 | $21,201 | $4,251 | $93 | — | — | — | $4,251 | $6,914 |
| 2022 | $17,043 | $3,059 | $50 | — | — | — | $3,059 | $7,196 |
| 2021 | $14,034 | $2,793 | $92,951 | $92,881 | 4 | — | $2,793 | $7,164 |
Under IRS private-foundation payout rules, The Thornton Foundation reported a distributable amount of $293K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Thornton Foundation's 2025 filing lists 3 officers; none of the 3 officers listed in 2025 report compensation.
Officers on the 2025 filing
John L. Thornton
Trustee
On filings since 2021
0.3 hrs/week
No compensation reported
Margaret B. Thornton
Trustee
On filings since 2021
0.3 hrs/week
No compensation reported
Robert S. Harrison
Trustee
On filings since 2021
0.3 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2021–2025. "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 The Thornton Foundation
How much does The Thornton Foundation give each year?
The Thornton Foundation gave $163K across 4 grants in 2025, according to its 2025 IRS Form 990-PF.
What is The Thornton Foundation's typical grant size?
The Thornton Foundation's median grant in 2025 was $23,195, and its average grant was $40,660, across 4 grants on its 2025 IRS Form 990-PF.
Where does The Thornton Foundation give grants?
The Thornton Foundation gives mostly in New York: 87% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was Florida (13%). The most frequent recipient cities were New York, NY (3 grants).
Does The Thornton Foundation give general operating support?
Yes: 100% of The Thornton Foundation'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 The Thornton Foundation?
The Thornton Foundation reported $411K in total assets on its 2025 IRS Form 990-PF. It paid out $163K in qualifying distributions that year, against a required minimum of $293K (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 The Thornton Foundation?
The Thornton Foundation is a private foundation focused on Philanthropy, based in West Palm Beach, FL. It holds $411K in total assets as of 2025.
What is The Thornton Foundation's EIN?
The Thornton Foundation's EIN (Employer Identification Number) is 13-3543268. IRS Form 990 filing data is available on this page for 2021–2025.
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 2025 (received by the IRS May 6, 2026)
- IRS filings on file for fiscal years 2021–2024
Explore Open Grants
Browse active grant opportunities in The Thornton Foundation's focus areas in our free grants database
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Cite this profile
Grantable. (2026). The Thornton Foundation funder profile. GrantGraph. Retrieved October 15, 2026, from https://grantable.co/funders/the-thornton-foundation-morg_2b053e1cc02c4dea8223cd01efabc991
BibTeX
@misc{grantable_133543268_2026,
author = {{Grantable}},
title = {{The Thornton Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/the-thornton-foundation-morg_2b053e1cc02c4dea8223cd01efabc991},
note = {Accessed 2026-10-15. 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 The Thornton 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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