The Mathenaeum Foundation
Invitation OnlyWilmington, Delaware · EIN 26-3372190 · Private foundation
Grants paid (2024)$534K
Organizations funded12
Typical grant$30,000
Total assets$10.2M
Half of its grants to organizations were between $15,000 and $60,000.
From the return
How to apply
On its return for tax year 2024 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
100% of grants went outside Delaware.
Grants paid in tax year 2024
| Recipient | Location | 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… | $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 |
| Mathematical Association of America Incorporated | Washington, DC | anonymous support of Project NExT fellows | $15,000 |
| Seattle Universal Math Museum | Seattle, WA | General & Unrestricted | $10,000 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2024 | $533,597 | 12 |
| 2023 | $754,074 | 18 |
Sources
- IRS Form 990-PF, tax year 2024, filed Nov 14, 2025 - IRS e-file batch, object ID 202503189349102805
- IRS Tax Exempt Organization Search for EIN 26-3372190
- Profile updated Nov 5, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.