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Mathhappens Foundation

EIN 47-1670799 · files IRS 990-PF

Given, as filed$130.0k2021–2024 · 27 grants
2021: $13.2k · 2 grants20212022: $59.9k · 14 grants2022$59.9k2023: $25.3k · 5 grants20232024: $31.6k · 6 grants2024$31.6k
Grantees6funded more than once, matching gifts aside
3 of 63of 6
Assets, year endnot on file
Board and officers4on its latest return

Where it gives

By cause and by place, from its own returns.

By cause

The cause each recipient registered with the IRS

Environment$43.0k
Arts and culture$9.7k
Science and technology$1.5k
Philanthropy and grantmaking$1.0k
Education$300
Cause not on file$74.6k

Mostly grants abroad and recipients without a US registration. Shown, never hidden.

By place

Dollars received, by the recipient's state

half the top state or more10–50%2–10%under 2%

Grants abroad and place not on file: 15 grants · $74.6k

Who it funds most

3 of its 6 grantees were funded in more than one year.

Mathhappens Foundation's own IRS 990-PF returns, as filed, in USD

Who funds the same organisations

Counted over its 6 largest grantees, leaving out fiscal sponsors and donor-advised funds, which share an address rather than a cause. A fact, not a partnership.

Its board and officers

From its latest return.

Alexander W SiegelDirector
Matthew B SiegelDirector
Lauren SiegelPres/Sec/Dir
Philip SiegelVP/Treas/Dir

Form 990PF Part VIII, tax year 2023, filing 202433209349100043

Name and title as its own return lists them. No pay, no address. A photograph appears only where the person's own organisation or a free licence publishes one, credited beside it; otherwise none. Anyone can ask to be removed: hello@philanova.ai.

Its money

What it gave, held and paid, by year.

Giving by year

2021: $13.2k · 2 grants20212022: $59.9k · 14 grants2022$59.9k2023: $25.3k · 5 grants20232024: $31.6k · 6 grants2024$31.6k
Its returns5 filings
Tax yearFormFilingWhere to read it
2024IRS 990-PF202600339349101115IRS batch file
2023IRS 990-PF202433209349100043IRS batch file
2022IRS 990-PF202303199349109510IRS batch file
2021IRS 990-PF202203199349101795IRS batch file
2020IRS 990-PF202113169349102761IRS batch file

An IRS batch file holds many returns; the filing number finds this one inside it.

The record as filedEvery table this page has always shown, in full.open

Mathhappens Foundation made 27 grants across 2021–2024, totalling $130.0k as filed.

Grants
27
Total, as filed
$130.0k
Years
2021–2024
Filed in
USD

Who it funds

OrganisationGrantsTotal
SOCIAL AND ENVIRONMENTAL ENTREPRENEURS4$43.0k
SUMM (MATHEATRE)2$29.0k
MUSIC NOTES LLC FOR SEATTLE UNIVERSAL MATH MUSEUM 501C(3)1$13.1k
FUNDAPROMAT1$10.9k
MATHEATRE CORPORATION2$5.2k
AUSTIN MUSEUM PARTNERSHIP3$4.5k
LOUISE RADLOFF MIDDLE SCHOOL GWINNETT COUNTY SCHOOL DISTRICT2$4.5k
MATH2THEPOINT1$3.8k
MMACA MUSEUM OF MATHEMATICS IN CATALONIA1$3.4k
AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF COMPUTING IN EDUCATION1$3.0k
FREEDOM MIDDLE SCHOOL DEKALB COUNTY SCHOOL DISTRICT1$2.5k
NEILL COCHRAN HOUSE MUSEUMTHE COLONIAL DAMES OF AMERICA IN THE STATE OF TX1$1.5k
RIVERBEND COMMUNITY MATH CENTER1$1.5k
MATHEMATICAL ASSOCIATION OF AMERICA1$1.4k
EDUFAB SUMMIT1$1.0k

By year

YearGrantsTotal
20212$13.2k
202214$59.9k
20235$25.3k
20246$31.6k

Where this came from

Identifier US-EIN-471670799. Register: Internal Revenue Service (US). Machine-readable: JSON.

What this page does not know

  • Wrong if: a figure recovered from a subtotal is read as the sum of the recovered rows. A subtotal divides onto a whole penny whatever its parts did, so rows the per-row rule refuses are inside these figures.
  • What they say they exist to do
  • What each grant was for
  • What they fund, by theme
  • Balance sheet and financials
  • Who runs it
  • Whether they accept proposals
  • Their own record on the register
  • No website on file
  • Leadership not yet identified
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