Funders › DE › The Mathenaeum Foundation › 2023
Grants paid by The Mathenaeum Foundation, tax year 2023
EIN 26-3372190 · Wilmington, DE · Form 990-PF, Part XV · NTEE T20
In tax year 2023, The Mathenaeum Foundation (EIN 26-3372190) reported 18 grants paid totaling $754,074. Dataset version 2026.09.0, built 2026-09-03.
Every grant, 2023
| Tax year | Recipient | Match | Amount | Type | Purpose | Source filing |
|---|---|---|---|---|---|---|
| 2023 | Seattle Universal Math Museum Mercer Island, WA | C | $222,500 | paid | Director's Compensation Fund, Studio Infinity programs, and general support | 202433169349102063 |
| 2023 | Ronald Mcdonald House Charities New York Metro Inc New Hyde Park, NY | U | $98,731 | paid | General & Unrestricted | 202433169349102063 |
| 2023 | Center for Disaster Philanthropy Inc Washington, DC | B | $75,000 | paid | Ukraine Humanitarian Crisis Recovery Fund | 202433169349102063 |
| 2023 | Prison Mathematics Project Inc Phoenix, AZ | B | $60,000 | paid | public and participant outreach and communication and general operating support | 202433169349102063 |
| 2023 | Impactstory Sanford, NC | B | $50,000 | paid | General & Unrestricted | 202433169349102063 |
| 2023 | University of Southern California Los Angeles, CA | U | $50,000 | paid | USC Math for America Los Angeles | 202433169349102063 |
| 2023 | President & Fellows of Harvard College Cambridge, MA | B | $43,000 | paid | Math Dept. Chair's Fund | 202433169349102063 |
| 2023 | Mathsworlduk Leeds | U | $31,868 | paid | Expenditure Responsibility Grant | 202433169349102063 |
| 2023 | Seattle Universal Math Museum Mercer Island, WA | C | $25,000 | paid | Executive Director Employment Fund | 202433169349102063 |
| 2023 | Talkstem Dallas, TX | B | $15,000 | paid | General & Unrestricted | 202433169349102063 |
| 2023 | National Association of Mathematicians Incorporate Atlanta, GA | C | $15,000 | paid | General & Unrestricted | 202433169349102063 |
| 2023 | Girls Angle Inc Cambridge, MA | B | $15,000 | paid | General & Unrestricted | 202433169349102063 |
| 2023 | Mathematical Association of America Incorporated Washington, DC | U | $15,000 | paid | anonymous sponsorship of Project NExT Fellows | 202433169349102063 |
| 2023 | Venice Heritage Foundation Venice, CA | B | $15,000 | paid | General & Unrestricted | 202433169349102063 |
| 2023 | Young Peoples Project Inc Cambridge, MA | B | $10,000 | paid | General & Unrestricted | 202433169349102063 |
| 2023 | National Organization of Gay and Lesbian Scientist Pasadena, CA | C | $10,000 | paid | Spectra, the association of LGBTQ+ mathematicians | 202433169349102063 |
| 2023 | Old Westbury College Foundation Inc Old Westbury, NY | B | $2,500 | paid | Institute for Creative Problem Solving | 202433169349102063 |
| 2023 | Seattle Universal Math Museum Mercer Island, WA | C | $475 | paid | General & Unrestricted | 202433169349102063 |
Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.
Recipient matching for this dataset version has not yet completed its independent precision check. Tier A rows carry the EIN the filer reported; tiers B–D are the matcher's inference and should be read as leads until the check is published on the methodology page.
Derived from IRS Form 990-PF e-file XML. Dataset version 2026.09.0, built 2026-09-03. All years for this funder.
The same organization elsewhere in the program: exempt status and filing health · federal awards · grant guidance · open opportunities.
This is informational only, derived from public data on the dates shown. It is not an eligibility determination, and not legal, tax, or accounting advice. Verify against the official source before relying on it.