· Private foundation
The Mathenaeum Foundation
Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- $10k–50k7 grants · $160k
- $50k–250k5 grants · $374k
| Recipient | Amount |
|---|---|
| STONY BROOK FOUNDATION INC | $100,000 |
| MATH CULTURAL CENTER OF CHICAGO | $91,597 |
| EVERY ORG | $72,000 |
| SOCIETY FOR SCIENCE AND THE PUBLIC | $60,000 |
| ST LAWRENCE UNIVERSITY | $50,000 |
| STONY BROOK FOUNDATION INC | $40,000 |
| SEATTLE UNIVERSAL MATH MUSEUM | $30,000 |
| SOCIETY FOR SCIENCE AND THE PUBLIC | $25,000 |
| SEATTLE UNIVERSAL MATH MUSEUM | $25,000 |
| MATHEMATICAL ASSOCIATION OF AMERICA INCORPORATED | $15,000 |
| GIRLS ANGLE INC | $15,000 |
| SEATTLE UNIVERSAL MATH MUSEUM | $10,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your US giving — 88% of grant dollars ($1.9M). The need read here covers only this US portion; the 12% that went abroad ($260k) is mapped below.
Dollar for dollar, your grants (FY17–24) land where the poverty rate runs at 11%, against an area that typically sits at 9%. 48% of your dollars go to grantees based in above-average-need neighborhoods. Your grants spread fairly evenly across need levels.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
Beyond the US — 12% of all-years giving ($260k)
1 country, by the recipient’s country on the filing.
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving. International giving is mapped by the recipient’s country from the same 990 filings; comparable need data isn’t available at that grain.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 5% of The Mathenaeum Foundation’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +136% since the first grant, against -6% for the ones you funded once.
8 repeat relationships — 4 still active in FY2024, 4 since wound down; 4 grantees were first funded in FY2024 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2024, 34% of grant dollars renewed an existing relationship; $354k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- SUSEATTLE UNIVERSAL MATH MUSEUM3× · 2022–2024 · $358k · revenue +534% · 51% of their budget
- SFSOCIETY FOR SCIENCE & THE PUBLIC2× · 2022–2024 · $216k · revenue +250%
- RMROSS MATHEMATICS FOUNDATION2× · 2021–2022 · $115k · revenue +136% · 26% of their budget
Funded once
- TOTHE OEIS FOUNDATION INCone grant, 2021 · $125k · revenue -42% · 65% of their budget
- RMRonald McDonald House Charities New York Metro Incone grant, 2023 · $99k · revenue -24%
- CFCENTER FOR DISASTER PHILANTHROPY INCgraduatedone grant, 2023 · $75k · revenue +40%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
The nstmf's mission is to build inclusive stem communities across the united states. fundamental to these communities are the significant, inspirational connections we foster between the individuals who have received national recognition…
The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
Nysci's mission is to nurture generations of passionate learners, critical thinkers, and active citizens through design make play - an approach to learning and engagement that is deeply rooted in research on stem learning and guides the…
By partnering anthropology with science and technology, we invite the world to design, construct and engage in experiences that link learning to life. past works with schools, districts and states to help transform education in terms of…
The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."
We are an intl. scientific & educational org. dedicated to advancing art, science & technology.
Future problem solving proudly celebrates more than 50 years of placing close to a million young people at the core of a dynamic, purposeful learning experience. each year k-12 students from around the world participate in a variety of…
The graduate center foundation is committed to promoting and safe-guarding the success of the graduate center by raising funds and managing and investing donations for use by the graduate center. the board of trustees of the foundation…
See Form 990, Part I, Line 1, Description of Organization Mission.
As a leading research university with a distinctive commitment to undergraduate education, Rice University aspires to path breaking research, unsurpassed teaching, and contributions to the betterment of our world. It seeks to fulfill this…
For reference, the grantee most central to the portfolio’s shape is Seattle Universal Math Museum and the most unlike its peers is Every Org. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
Your grantees are a median of 22 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 9% of your grantees by number, and just 9% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 13% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
22 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 22 of the 27 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds SEATTLE UNIVERSAL MATH MUSEUM ↗
- Who funds SOCIETY FOR SCIENCE & THE PUBLIC ↗
- Who funds STONY BROOK FOUNDATION INC ↗
- Who funds GIRLS ANGLE INC ↗
- Who funds THE OEIS FOUNDATION INC ↗
- Who funds ROSS MATHEMATICS FOUNDATION ↗
- Who funds Ronald McDonald House Charities New York Metro Inc ↗
- Who funds MATH CULTURAL CENTER OF CHICAGO ↗
- Who funds CENTER FOR DISASTER PHILANTHROPY INC ↗
- Who funds EVERY ORG ↗
- Who funds UNIVERSITY OF SOUTHERN CALIFORNIA ↗
- Who funds ImpactStory ↗
- Who funds ST LAWRENCE UNIVERSITY ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds West Contra Costa Public Education Fund ↗
- Who funds GOLDEN GATE STEM FAIR ↗
- Who funds TALKSTEM ↗
- Who funds VENICE HERITAGE FOUNDATION ↗
- Who funds THE ART OF PROBLEM SOLVING INITIATIVE INC ↗
- Who funds THE YOUNG PEOPLE'S PROJECT INC ↗
- Who funds FANNIE AND JOHN HERTZ FOUNDATION ↗
- Who funds OLD WESTBURY COLLEGE FOUNDATION INC ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: Gates Foundation · Jewish Communal Fund · Silicon Valley Community Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Morgan Stanley Global Impact Funding Trust Inc · The Blackbaud Giving Fund · Vanguard Charitable Endowment Program · National Philanthropic Trust · American Online Giving Foundation Inc · Paypal Charitable Giving Fund · Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving Inc
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization The Mathenaeum Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
- The Young People's Project Inc — 39% of income from government
- President and Fellows of Harvard College — 7% of income from government
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.