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NATIONAL HELLENIC MUSEUM

EIN 36-3568402 CHICAGO, IL

Browse the largest nonprofits in Illinois

Revenue 2024
$1,556,220
Expenses 2024
$2,265,324

Program services were 22.1% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
A500
Classification
1000
Street
333 S HALSTED ST

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).

Mission and programs · 2024

Mission

THE NATIONAL MUSEUM TOURS, SCHOOL PROGRAMS, CLASSES, EVENTS, CHILDREN'S AND FAMILY PROGRAMS USE THE MUSEUM'S PERMANENT AND TEMPORARY EXHIBITIONS AS A FOUNDATION FOR LEARNING. ALL OF THE EDUCATIONAL PROGRAMS FOR CHILDREN AND ADULTS ARE OFFERED TO ENCOURAGE EXPERIENTIAL LEARNING AS WELL AS OFFER NEW WAYS OF THINKING ABOUT GREEK HISTORY AND GREEK CULTURE.

  • MUSEUM - TO PROMOTE UNDERSTANDING OF HELLENIC CULTURE, IDEAS AND TRADITIONS AND TO DISSEMINATE THE INFORMATION TO ALL INTERESTED PARTIES.

    Expenses $499,782 · Revenue $21,102

  • MUSEUM STORE - SALES OF EDUCATIONAL BOOKS AND MATERIALS TO SUPPLEMENT CURRENT MUSEUM DISPLAYS.

    Expenses $562 · Revenue $5,838

As filed on the 2024 return.

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.

  • Marianne Kountoures

    Executive Dir.

    Total calculated
    $167,553
    From this org
    $167,553
    From related orgs
    $0
    Other
    $0
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $154,365
    Bonus
    not reported
    Other
    $13,188
    Deferred
    not reported
    Nontaxable benefits
    not reported
    Filer's total
    $167,553

  • John S Koudounis

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • John Calamos Sr

    Chairman

    Total calculated
    $0
    Hours/week
    8

  • Konstantinos Armiros

    Secretary

    Total calculated
    $0
    Hours/week
    4

  • Aristotle Halikias

    Vice Chairman

    Total calculated
    $0
    Hours/week
    2

  • Peter Parthenis

    Vice Chairman

    Total calculated
    $0
    Hours/week
    2

  • Bill J Vranas

    Treasurer

    Total calculated
    $0
    Hours/week
    6

  • Paul Athens

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • Dr George K Bovis

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • William G Conopeotis

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • Andrea Darla

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • Demetrios Logothetis

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • C Dean Metropoulos

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • George Tsetsekos

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • Kenneth Kondraros

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • Alex Gianaras

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • Yanni Sianis

    Trustee

    Total calculated
    $0
    Hours/week
    6

  • John V Kalantzis

    Trustee

    Total calculated
    $0
    Hours/week
    2

  • Hon Judge Anna Demacopoulos

    Trustee

    Total calculated
    $0
    Hours/week
    2

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, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $1,556,220
    Expenses
    $2,265,324
    Contributions
    $1,755,011
    Grants paid
    $0
  • 2023
    Revenue
    $2,328,427
    Expenses
    $2,279,809
    Contributions
    $2,544,165
    Grants paid
    $0
  • 2022
    Revenue
    $1,940,512
    Expenses
    $1,989,279
    Contributions
    $2,145,744
    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.

Other returns filed

  • 2021 · 990

    Revenue
    $1,620,518
    Expenses
    $1,459,156
    Assets (EOY)
    $16,982,470

  • 2020 · 990

    Revenue
    $2,155,825
    Expenses
    $1,507,955
    Assets (EOY)
    $17,117,324

  • 2019 · 990

    Revenue
    $1,711,326
    Expenses
    $2,225,267
    Assets (EOY)
    $16,276,289

  • 2018 · 990

    Revenue
    $2,410,535
    Expenses
    $2,429,089
    Assets (EOY)
    $17,066,063

  • 2017 · 990

    Revenue
    $2,187,766
    Expenses
    $2,923,962
    Assets (EOY)
    $17,360,334

  • 2016 · 990

    Revenue
    $3,306,691
    Expenses
    $3,593,102
    Assets (EOY)
    $18,199,762

  • 2015 · 990

    Revenue
    $3,858,620
    Expenses
    $3,968,918
    Assets (EOY)
    $18,774,637

  • 2014 · 990

    Revenue
    $4,308,448
    Expenses
    $2,995,721
    Assets (EOY)
    $19,501,602

  • 2013 · 990

    Revenue
    $4,797,625
    Expenses
    $2,452,211
    Assets (EOY)
    $18,722,745

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all.

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 11 November 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.

What this page reflects

The registration facts above come from the IRS Business Master File published 9 November 2026 and read 9 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.