Skip to content
Nonprofiteer
← All organizations

GREENWICH SYMPHONY ORCHESTRA INC

EIN 06-6107766 GREENWICH, CT

Revenue 2024
$730,131
Expenses 2024
$829,780

Program services were 72.7% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
A69Z
Classification
2000
Street
PO BOX 35

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 GREENWICH SYMPHONY ORCHESTRA PRESENTS THE TRANSFORMATIVE POWER OF MUSIC TO A BROAD COMMUNITY AUDIENCE, PROVIDES INSPIRATIONAL MUSIC EDUCATION TO THOUSANDS OF STUDENTS, AND CULTIVATES NEW WORKS, ARTISTS, AND AUDIENCES.THE GSO'S EDUCATIONAL OUTREACH PROGRAMS, INCLUDING THE POPULAR YOUNG PEOPLE'S CONCERTS, HAVE INSPIRED OVER 3,000 BUDDING MUSICIANS EACH YEAR, FOSTERING A LIFE-LONG INTEREST IN MUSIC.

Activities or mission (Part I)

PRESENT SYMPHONY ORCHESTRA CONCERTS

  • PRODUCTION OF 5 PAIRS OF SYMPHONY ORCHESTRA CONCERTS FOR THE GENERAL PUBLIC; AVERAGE ATTENDANCE IS 400 PER PERFORMANCE; INCLUDES PROGRAM PRODUCTION COSTS, INSURANCE AND PUBLICITY.

    Expenses $556,238 · Revenue $327,010

  • PRODUCTION OF ONE YOUNG PEOPLE'S CONCERT, CONSISTING OF 2 PERFORMANCES, EACH OFFERED FREE TO SCHOOL CHILDREN AS PART OF THEIR MUSIC CURRICULUM; TOTAL ATTENDANCE EXCEEDS 1,700.

    Expenses $34,538

  • GSO IN GREENWICH - GRAMMAR SCHOOLS: PRODUCTION OF 2 OR 3 MUSICIANS PROVIDING EDUCATIONAL DEMONSTRATIONS TO THE STUDENTS.MIDDLE SCHOOL: SIDE BY SIDE CONCERTS.HIGH SCHOOL: MASTER CLASSES.

    Expenses $12,852

As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.

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.

  • STUART ADELBERG

    CHARIMAN

    Total calculated
    $0
    Hours/week
    10

  • LENORE DE CSEPEL

    VICE CHAIRMAN

    Total calculated
    $0
    Hours/week
    20

  • SUZANNE LIO

    EXECUTIVE DIRECTOR

    Total calculated
    $119,792
    From this org
    $119,792
    From related orgs
    $0
    Other
    $0
    Hours/week
    35

  • FREDERICK WU

    TREASURER

    Total calculated
    $0
    Hours/week
    20

  • JUDY SOTO

    SECRETARY

    Total calculated
    $0
    Hours/week
    5

  • JOSEPH WILLIAMSON JR

    OPERATIONS

    Total calculated
    $0
    Hours/week
    5

  • LESLIE TARKINGTON

    GOVERNANCE

    Total calculated
    $0
    Hours/week
    5

  • ERIN FLYNN

    DEVELOPMENT COMMITTEE

    Total calculated
    $0
    Hours/week
    5

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. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $730,131
    Expenses
    $829,780
    Contributions
    $403,121
    Grants paid
    $0
  • 2023
    Revenue
    $622,549
    Expenses
    $773,259
    Contributions
    $385,601
    Grants paid
    $0
  • 2022
    Revenue
    $689,137
    Expenses
    $655,222
    Contributions
    $326,462
    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

Other IRS files

Auto-Revocation List

  • Exemption revoked 15 November 2021.

Publication 78

Listed as of 13 October 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 13 October 2026 and read 26 October 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.