The Mathenaeum Foundation
The Mathenaeum Foundation is a private foundation based in Wilmington, Delaware. Its 2024 filing reports 12 grants totaling $533,597, including support for mathematics programs, public engagement with mathematics, and mathematics coverage in science news.
The Mathenaeum Foundation at a glance
In short: The Mathenaeum Foundation gave $534K across 12 grants in 2024 (avg $44K), top state New York. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $533,597
- -29.2% vs 2023
- Grants made (2024)
- 12
- -33.3% vs 2023
- Average grant
- $44,466
- +6.1% vs 2023
- Median grant
- $35,000
- Total assets
- $10,019,132
- +0.9% vs 2023
- Primary geography
- New York (36% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026.
How to apply to The Mathenaeum Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: Foundation Source 501 Silverside Rd, Wilmington, DE 19809-1377
Phone: (800) 839-1754
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who The Mathenaeum Foundation funds
How this funder distributes its grants
Top Recipients
Top 8 recipients in 2024
The largest 2024 recipient was Stony Brook Foundation Inc ($140K across 2 grants). Together the top 8 received $534K.
Grant Size Distribution
46 grants across all recorded years
The most common grant size was under $50K: 31 grants of 46 (67%).
Geographic Focus
Where this funder awards grants
The foundation is based in Wilmington, Delaware. For 2024, the largest reported shares of grant dollars by recipient state were New York (36%), District of Columbia (19%), Illinois (17%), California (13%), and Washington (12%).
Grant Distribution by State
Share of 2024 grant dollars across all 12 itemized grants.
States
Cities
How The Mathenaeum Foundation gives
- Giving grew 122% from 2021 to 2024. Method
- In 2024 it paid out 120% 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
From 2020 to 2024, annual grant giving ranged from $23K (2020) to $754K (2023). In 2024 it made 12 grants totaling $534K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Stony Brook Foundation Inc Stony Brook, NY | This grant is designated for Math for America, restricted to Math for America's Cohort Project program | $100,000 |
| Math Cultural Center of Chicago Chicago, IL | General & Unrestricted | $91,597 |
| Every Org San Francisco, CA | The Prison Math Project | $72,000 |
| Society for Science and the Public Washington, DC | to support mathematics coverage in Science News, broadly along the lines of the Society for Science proposal to the Mathenaeum Foundation | $60,000 |
| St Lawrence University Canton, NY | to support the Illustration Apprenticeships program of Illustration as a Mathematical Research Technique semester, with St. Lawrence University as Financial Administrator | $50,000 |
| Stony Brook Foundation Inc Stony Brook, NY | This grant is designated for Math for America for the general support of Math for America | $40,000 |
| Seattle Universal Math Museum Seattle, WA | to support the development and operation of in-house programs to serve the local community | $30,000 |
| Seattle Universal Math Museum Seattle, WA | Executive Director Employment Fund | $25,000 |
| Society for Science and the Public Washington, DC | to support mathematics coverage in Science News | $25,000 |
| Girls Angle Inc Cambridge, MA | General & Unrestricted | $15,000 |
Ready to take the next step with The Mathenaeum 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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $10,019,132 | $668,833 | $576,576 | $533,597 | 12 | $568,226 | $442,923 | $475,032 |
| 2023 | $9,926,875 | $1,042,839 | $793,757 | $754,074 | 18 | $788,077 | $427,659 | $571,124 |
| 2022 | $9,677,793 | $123,195 | $345,046 | $309,301 | 11 | $444,496 | $140,071 | $788,553 |
| 2021 | $9,899,644 | $127,523 | $272,726 | $240,000 | 4 | $272,546 | $26,582 | $458,296 |
| 2020 | $10,044,847 | $328,458 | $61,042 | $23,466 | 1 | — | $27,652 | $445,601 |
Under IRS private-foundation payout rules, The Mathenaeum Foundation reported a distributable amount of $475K for 2024 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
No mission statement for the foundation is provided. Its 2024 grants supported a range of mathematics-related activities, including a Math for America cohort program, the Prison Math Project, mathematics coverage in Science News, illustration apprenticeships described as a mathematical research technique, and local math-museum programs.
The grantees describe their own missions in varied terms. Math Cultural Center of Chicago says it connects visitors to math through its roles in art, culture, nature, technology, and daily life. Seattle Universal Math Museum says it aims to spark a love of math through creative opportunities for exploration, learning, and discovery, and to reduce equity gaps in math education. The Mathematical Association of America says its mission is to advance understanding of mathematics and its impact on the world.
Grantmaking
In 2024, the foundation made 12 grants totaling $533,597. Grant amounts ranged from $10,000 to $100,000, with a median grant of $35,000.
Among the largest 2024 grants were $100,000 to Stony Brook Foundation Inc., designated for Math for America’s Cohort Project; $91,597 to Math Cultural Center of Chicago for general and unrestricted support; $72,000 to Every.org for the Prison Math Project; and $60,000 to Society for Science and the Public to support mathematics coverage in *Science News*. Other awards included $50,000 to St. Lawrence University for an illustration-apprenticeship program, with the university as financial administrator; $40,000 to Stony Brook Foundation Inc. for Math for America’s general support; and $30,000 to Seattle Universal Math Museum for local in-house programs.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Glen T. Whitney as president, director, and secretary.
The Mathenaeum Foundation is led by Glen T Whitney, President, Director & Secretary on every filing since 2020 — the only officer listed, and uncompensated.
Officers on the 2024 filing
Glen T Whitney
President, Director & Secretary
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2024. "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 Mathenaeum Foundation
How much does The Mathenaeum Foundation give each year?
The Mathenaeum Foundation gave $534K across 12 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $754K across 18 grants.
What is The Mathenaeum Foundation's typical grant size?
The Mathenaeum Foundation's median grant in 2024 was $35,000, and its average grant was $44,466, across 12 grants on its 2024 IRS Form 990-PF.
Where does The Mathenaeum Foundation give grants?
The Mathenaeum Foundation's top state is New York, with 36% of the grant dollars itemized on its 2024 IRS Form 990-PF. The next largest states were District of Columbia (19%) and Illinois (17%). The most frequent recipient cities were Washington, DC (3 grants), Seattle, WA (3 grants) and Stony Brook, NY (2 grants).
Does The Mathenaeum Foundation give general operating support?
Yes: 33% of The Mathenaeum Foundation's 2024 grants with a stated purpose (4 of 12) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are The Mathenaeum Foundation's largest grantees?
The Mathenaeum Foundation's largest 2024 grantees include Stony Brook Foundation Inc ($140,000 across 2 grants), Math Cultural Center of Chicago ($91,597) and Society for Science and the Public ($85,000 across 2 grants), according to its 2024 IRS Form 990-PF. Together they received 59% of its itemized 2024 grant dollars.
How large is The Mathenaeum Foundation?
The Mathenaeum Foundation reported $10.0M in total assets on its 2024 IRS Form 990-PF. It paid out $568K in qualifying distributions that year, against a required minimum of $475K (roughly 5% of its investment assets).
What does The Mathenaeum Foundation fund?
No mission statement for the foundation is provided. See mission & focus areas ↑
How do I apply for a grant from The Mathenaeum Foundation?
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is The Mathenaeum Foundation's EIN?
The Mathenaeum Foundation's EIN (Employer Identification Number) is 26-3372190. IRS Form 990 filing data is available on this page for 2020–2024.
Does The Mathenaeum 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 September 2026.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
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Cite this profile
Grantable. (2026). The Mathenaeum Foundation funder profile. GrantGraph. Retrieved October 12, 2026, from https://grantable.co/funders/the-mathenaeum-foundation-morg_a8b9ed7f19984ed2a18c774f4a0cd121
BibTeX
@misc{grantable_263372190_2026,
author = {{Grantable}},
title = {{The Mathenaeum Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/the-mathenaeum-foundation-morg_a8b9ed7f19984ed2a18c774f4a0cd121},
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 The Mathenaeum 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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