William W Treat Foundation
The William W Treat Foundation is a private foundation based in Stratham, New Hampshire. Its 2025 filing reports grants to charitable organizations, with most grant dollars going to recipients in New Hampshire.
William W Treat Foundation at a glance
In short: William W Treat Foundation gave $129K across 10 grants in 2025 (avg $13K), mostly in New Hampshire. 0% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $129,318
- +10.8% vs 2024
- Grants made (2025)
- 10
- +0.0% vs 2024
- Average grant
- $12,932
- +10.8% vs 2024
- Median grant
- $4,500
- Total assets
- $1,390,966
- +14.5% vs 2024
- New grantees (estimate)
- 0% first-time grantees (0 of 10, 2025; small sample)
- Primary geography
- New Hampshire (88% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to William W Treat Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation does not accept unsolicited requests. Its filing says contributions are made only to preselected charitable organizations; the form and materials are determined by internal decision. It lists no restrictions on awards.
- Contact
Application contact: Josephine Stroble
Mailing address: 134 Winnicutt Road, Stratham, NH 03885
Phone: (603) 498-3260
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who William W Treat Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was New Hampshire Institute for Civics ($43K). Together the top 10 received $129K.
Grant Size Distribution
52 grants across all recorded years
The most common grant size was under $50K: 51 grants of 52 (98%).
Geographic Focus
Where this funder awards grants
In 2025, recipients in New Hampshire received 88% of grant dollars, those in Maine 8%, and those in Massachusetts, Virginia, and Arizona 2%, 2%, and 1%, respectively.
Grant Distribution by State
Share of 2025 grant dollars across all 10 itemized grants.
Cities
Is William W Treat Foundation open to new grantees?
0%
first-time grantees, 2025
In 2025, 0 of 10 grantees (0%) were first-time recipients. With only 10 grantees, that is a small sample: one grantee more or less moves the share by about 10 points. How we count
- 100% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (−1%). Method
- In 2025 it paid out 95% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $106K (2020) to $131K (2022). In 2025 it made 10 grants totaling $129K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| New Hampshire Institute for Civics Concord, NH | Education | $43,000 |
| University of New Hampshire Foundation Durham, NH | Education | $40,000 |
| American Independence Museum Exeter, NH | Operating Costs | $25,000 |
| University of Maine Foundation Orono, ME | Education | $5,818 |
| Citizens Count Hampton, NH | Operating Costs | $5,000 |
| Winterport Memorial Library Winterport, ME | Education | $4,000 |
| New England Historic Genealogical Society Boston, MA | Operating Costs | $2,500 |
| National College of Probate Judges Williamsburg, VA | Operating Costs | $2,000 |
| Friends of St Mary & Andrew Church Stratham, NH | Operating Costs | $1,000 |
| University of Arizona Foundation Tucson, AZ | Education | $1,000 |
Ready to take the next step with William W Treat Foundation?
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 | $1,390,966 | $338,007 | $162,378 | $129,318 | 10 | $129,318 | $40,143 | $135,734 |
| 2024 | $1,215,337 | $91,303 | $143,853 | $116,742 | 10 | $116,742 | $52,341 | $129,318 |
| 2023 | $1,267,887 | $15,618 | $143,916 | $122,915 | 11 | $122,915 | $60,288 | $116,742 |
| 2022 | $1,396,185 | $127,417 | $151,045 | $130,980 | 10 | $130,980 | $47,109 | $122,915 |
| 2021 | $1,419,813 | $320,267 | $139,019 | $112,072 | 11 | $112,072 | $32,603 | $130,980 |
| 2020 | $1,238,565 | $230,360 | $127,995 | $105,848 | 14 | — | $37,698 | $112,072 |
Under IRS private-foundation payout rules, William W Treat Foundation reported a distributable amount of $136K for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated October 2026.
Mission & Focus Areas
The foundation’s filings do not state a mission. Its 2025 grants went to organizations working in education, civic life, museums, libraries, genealogy, probate courts, and a church, based on the listed recipients and grant purposes. The University of New Hampshire Foundation describes its role as coordinating private support for the University of New Hampshire. The University of Maine Foundation says it encourages philanthropic support for the University of Maine and other charitable organizations while carrying out donors’ wishes. The National College of Probate Judges says it works to improve the administration of justice in probate courts, including through educational programs.
Grantmaking
In 2025, the foundation gave $129,318 through 10 grants. Grant amounts ranged from $1,000 to $43,000, with a median of $4,500. Its largest grants were $43,000 to the New Hampshire Institute for Civics for education, $40,000 to the University of New Hampshire Foundation for education, and $25,000 to the American Independence Museum for operating costs. Other grants included $5,818 to the University of Maine Foundation for education, $5,000 to Citizens Count for operating costs, and $4,000 to Winterport Memorial Library for education.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists H Alfred Casassa, Robert A Casassa, Peter F H Lamb, and Josephine M Stroble as trustees.
William W Treat Foundation's 2025 filing lists 4 officers; all 4 officers listed in 2025 are compensated.
Officers on the 2025 filing
H. Alfred Casassa
Trustee
On filings since 2020
1 hr/week
$2K (2020) → $3K (2025)
Josephine M. Stroble
Trustee
On filings since 2020
1 hr/week
$2K (2020) → $3K (2025)
Peter F. H. Lamb
Trustee
On filings since 2020
1 hr/week
$3K (2020) → $4K (2025)
Robert A. Casassa
Trustee
On filings since 2020
1 hr/week
$2K (2020) → $3K (2025)
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.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $4K, to Peter F H Lamb (Trustee). 4 officers or directors reported compensation on that filing.
Frequently asked questions about William W Treat Foundation
How much does William W Treat Foundation give each year?
William W Treat Foundation gave $129K across 10 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $117K across 10 grants.
What is William W Treat Foundation's typical grant size?
William W Treat Foundation's median grant in 2025 was $4,500, and its average grant was $12,932, across 10 grants on its 2025 IRS Form 990-PF.
Where does William W Treat Foundation give grants?
William W Treat Foundation gives mostly in New Hampshire: 88% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was Maine (8%).
Does William W Treat Foundation give general operating support?
Yes: 50% of William W Treat Foundation's 2025 grants with a stated purpose (5 of 10) were for general or operating support, per its 2025 IRS Form 990-PF. Recurring purposes include "Education" (5 grants).
Who are William W Treat Foundation's largest grantees?
William W Treat Foundation's largest 2025 grantees include New Hampshire Institute for Civics ($43,000), University of New Hampshire Foundation ($40,000) and American Independence Museum ($25,000), according to its 2025 IRS Form 990-PF. Together they received 84% of its itemized 2025 grant dollars.
How large is William W Treat Foundation?
William W Treat Foundation reported $1.4M in total assets on its 2025 IRS Form 990-PF. It paid out $129K in qualifying distributions that year, against a required minimum of $136K (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 does William W Treat Foundation fund?
The foundation’s filings do not state a mission. Its 2025 grants went to organizations working in education, civic life, museums, libraries, genealogy, probate courts, and a church, based on the listed recipients and grant purposes. See mission & focus areas ↑
How do I apply for a grant from William W Treat Foundation?
The foundation does not accept unsolicited requests. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is William W Treat Foundation's EIN?
William W Treat Foundation's EIN (Employer Identification Number) is 02-6013780. IRS Form 990 filing data is available on this page for 2020–2025.
Does William W Treat Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated October 2026.
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 June 1, 2026)
- IRS filings on file for fiscal years 2020–2024
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Cite this profile
Grantable. (2026). William W Treat Foundation funder profile. GrantGraph. Retrieved October 12, 2026, from https://grantable.co/funders/william-w-treat-foundation-morg_e45d433700fc48eb9cfac35cb29f821a
BibTeX
@misc{grantable_026013780_2026,
author = {{Grantable}},
title = {{William W Treat Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/william-w-treat-foundation-morg_e45d433700fc48eb9cfac35cb29f821a},
note = {Accessed 2026-10-12. 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 William W Treat 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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