New York · Nonprofit
NATIONAL MUSEUM OF MATHEMATICS
NATIONAL MUSEUM OF MATHEMATICS (New York) receives grants from 50 organizations whose IRS filings report $43,009,735 to it, the largest being MJS FOUNDATION INC ($11,001,378). 33 of them have funded it in more than one year.
- Revenue FY2025
- $26M
- Funders on record
- 50
- Grants received
- $43M
- Net assets
- $69M
What National Museum of Mathematics does
Mission
Mathematics illuminates the patterns that abound in our world. The National Museum of Mathematics (momath) strives to enhance public understanding and perception of mathematics. Its dynamic exhibits and programs stimulate inquiry, spark curiosity, and reveal the wonders of mathematics. The museum's activities lead a broad and diverse audience to understand the evolving, creative, human, and aesthetic nature of mathematics.
As stated on its FY2025 Form 990.
Programs
Museum: during fiscal 2025, momath operated a hands-on museum focused on mathematics in a temporary location on fifth avenue, as well as running online programs reaching people in 145 countries around the world. During the fiscal year, the museum also refurbished old exhibits, designed and built new exhibits, and managed a construction project for its new location on sixth avenue.
$5,894,864 spent$1,795,307 earned by the program82% of program spendingCommunity: momath operates a number of public programs that serve the community by providing experiences that highlight the evolving, creative, and aesthetic nature of mathematics. These programs also aim to show the many unexpected ways that math touches on the world around us and on our everyday lives. Community programs included several monthly presentation series, a suite of traveling/portable exhibits, and a variety of in-person and online programs directed toward people of all ages and backgrounds, including students and teachers on field trips, families, adults without children, and tourists from all over the world.
$1,222,928 spentof which $30,000 as grants$461,468 earned by the program17% of program spendingTraveling exhibition: math midway 2 go (mm2go.org) is a spin-off of momath's original traveling exhibition (the math midway). It can be deployed at a variety of venues, including schools, libraries, community centers, etc.
$74,299 spent$2,435 earned by the program1% of program spending
The 3 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $7,192,091.
The organization over time
Each line starts at 100 in 2019, so what you read is the shape rather than the size: 150 means half as much again as 2019, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2024 to 2025, from $56M to $104M (+87%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2020 0% · 2021 10% · 2022 1% · 2023 5% · 2024 0% · 2025 1%. Grants only. Government contracts and fees sit inside program revenue.
84% of NATIONAL MUSEUM OF MATHEMATICS’s revenue is contributions — more reliant on donations than three-quarters of its peers (58% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 7 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
Cindy Lawrence
Executive director and CEO
Board chair
John Overdeck
Trustee / chair
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 12 funders to 25 funders, grant income rose $653k → $13M.
12 of 50 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 19% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of NATIONAL MUSEUM OF MATHEMATICS’s funders (the co-funder graph). Top 30 of 50 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
NATIONAL MUSEUM OF MATHEMATICS leans on a few funders — its largest provides 26% of grant income and the top three 70%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
Largest funder’s share by year: 2017 51% · 2018 61% · 2019 94% · 2020 26% · 2021 55% · 2022 36% · 2023 41% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
48% of NATIONAL MUSEUM OF MATHEMATICS's funders are still giving 3 years after their first grant; 66% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
96% of NATIONAL MUSEUM OF MATHEMATICS's grant income comes from New York funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $8.0M arriving through sponsors registered in 9 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
NATIONAL MUSEUM OF MATHEMATICS runs a healthier operating margin than three-quarters of the 550 arts & culture nonprofits its size.
this organization peer median middle 50% of peers· 550 arts & culture nonprofits $10M–$100M, FY2025
Organizations like NATIONAL MUSEUM OF MATHEMATICS
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In New York
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
69% of spending goes to programs.
Governance
Public support
45%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for NATIONAL MUSEUM OF MATHEMATICS: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds NATIONAL MUSEUM OF MATHEMATICS?
- NATIONAL MUSEUM OF MATHEMATICS (New York) receives grants from 50 organizations whose IRS filings report $43,009,735 to it, the largest being MJS FOUNDATION INC ($11,001,378). 33 of them have funded it in more than one year.
- How many funders does NATIONAL MUSEUM OF MATHEMATICS have?
- IRS filings report 50 organizations giving $43,009,735 in grants to NATIONAL MUSEUM OF MATHEMATICS, 33 of which have funded it in more than one year.
- Who is the largest funder of NATIONAL MUSEUM OF MATHEMATICS?
- MJS FOUNDATION INC is the largest funder on record, with $11,001,378 in grants. The full list of funders is on this page.
- How can an organization like NATIONAL MUSEUM OF MATHEMATICS find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in New York. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds National Museum of Mathematics →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2019–2025), and the filings of 50 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing