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NATIONAL MUSEUM OF MATHEMATICS

EIN 27-1450809 NEW YORK, NY

Revenue 2024
$25,872,371
Expenses 2024
$10,384,430

Program services were 69.3% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
A50
Classification
2000
Street
635 SIXTH AVE

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • JOHN OVERDECK

    TRUSTEE / CHAIR

    Total calculated
    $0
    Hours/week
    3
  • DAVID TUROCK

    TRUSTEE / VICE CHAIR

    Total calculated
    $0
    Hours/week
    1
  • SAUL ROSENTHAL

    TRUSTEE / SECRETARY

    Total calculated
    $0
    Hours/week
    1
  • ROBERT JONES

    TRUSTEE / TREASURER

    Total calculated
    $0
    Hours/week
    1
  • KEVIN ATTESON

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • ARMEN AVANESSIANS

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • MANJUL BHARGAVA

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • DAVID DE WEESE

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • ROBERT FREY

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • LAETITIA GARRIOTT DE CAYEUX

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • JUDITH GIBBONS

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • MATTHEW GOLDSTEIN

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • MARK HARRIS

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • MARIA KLAWE

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • PHILIPP LEGNER

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • SANDY LEONG

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • CHRISTINA LEWIS

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • RAJ MAHAJAN

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • RICHARD PECHTER

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • SUZANNE PENAVIC

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • EDWARD SCHMIDT

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • DEXTER SENFT

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • MARILYN SIMONS

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • JOHN URSCHEL

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • JADE VINSON

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1

The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $25,872,371
    Expenses
    $10,384,430
    Contributions
    $21,619,998
    Grants paid
    $30,000
  • 2023
    Revenue
    $27,013,034
    Expenses
    $9,811,847
    Contributions
    $17,954,492
    Grants paid
    $0
  • 2022
    Revenue
    $7,869,251
    Expenses
    $9,533,535
    Contributions
    $4,633,583
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

The 10 largest by cash amount. The API serves every itemized grant.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 10 September 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.