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OPEN SOCIETY INSTITUTE

EIN 13-7029285 NEW YORK, NY

Largest nonprofits in New York

Revenue 2024
$396,477,106
Expenses 2024
$295,896,735

As filed

Subsection
03
NTEE code
T23
Classification
1000
Street
224 W 57TH ST FL 4TH/DESK 410B

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.

  • Alexander Soros

    TRUSTEE

    Total calculated
    $0
    Hours/week
    5
  • Maija Arbolino

    TREASURER/CFO

    Total calculated
    $575,896
    Compensation
    $445,562
    Benefit plans
    $130,334
    Expense account
    $0
    Hours/week
    40
  • Greg Taylor

    GLOBAL DIRECTOR OF OPS (FORMER)

    Total calculated
    $2,904
    Compensation
    $0
    Benefit plans
    $2,904
    Expense account
    $0
    Hours/week
    0
  • Leonard Benardo

    SENIOR VICE PRESIDENT

    Total calculated
    $954,395
    Compensation
    $773,706
    Benefit plans
    $180,689
    Expense account
    $0
    Hours/week
    40
  • Mark Malloch-Brown

    TRUSTEE & PRESIDENT (THRU 3/31/2024)

    Total calculated
    $322,519
    Compensation
    $322,519
    Benefit plans
    $0
    Expense account
    $0
    Hours/week
    10
  • Binaifer Nowrojee

    PRESIDENT (AS OF 4/1/2024)

    Total calculated
    $1,058,975
    Compensation
    $881,219
    Benefit plans
    $177,756
    Expense account
    $0
    Hours/week
    40
  • Nicole Wilett

    CHIEF OF STAFF (THRU 1/31/2024)

    Total calculated
    $394,319
    Compensation
    $389,484
    Benefit plans
    $4,835
    Expense account
    $0
    Hours/week
    40
  • Laura Silber

    TRUSTEE (AS OF 12/19/2024)

    Total calculated
    $757,140
    Compensation
    $602,522
    Benefit plans
    $154,618
    Expense account
    $0
    Hours/week
    40
  • Pedro Abramovay

    VICE PRESIDENT, PROGRAMS

    Total calculated
    $0
    Hours/week
    5
  • Sandra Breka

    VP AND COO

    Total calculated
    $0
    Hours/week
    5
  • Samantha Stokes-Baydur

    CHIEF PEOPLE AND CULTURE OFFICER

    Total calculated
    $830,744
    Compensation
    $705,100
    Benefit plans
    $125,644
    Expense account
    $0
    Hours/week
    40
  • Catherine Livingston

    GEN COUNSEL, SECRETARY (THRU 1/17/24)

    Total calculated
    $63,524
    Compensation
    $53,916
    Benefit plans
    $9,608
    Expense account
    $0
    Hours/week
    40
  • Debbie Fine

    GEN COUNSEL, SECRETARY (AS OF 1/17/24)

    Total calculated
    $601,864
    Compensation
    $530,457
    Benefit plans
    $71,407
    Expense account
    $0
    Hours/week
    40
  • Smita Singh

    CHIEF STRATEGY OFFICER (FORMER)

    Total calculated
    $24,992
    Compensation
    $24,992
    Benefit plans
    $0
    Expense account
    $0
    Hours/week
    0

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
    $396,477,106
    Expenses
    $295,896,735
    Contributions
    $37,801,117
    Grants paid
    $155,991,010
  • 2023
    Revenue
    $436,327,089
    Expenses
    $390,477,522
    Contributions
    $74,800,932
    Grants paid
    $210,328,203
  • 2022
    Revenue
    $564,227,312
    Expenses
    $364,425,841
    Contributions
    $11,219,509
    Grants paid
    $177,174,007

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

  • 2024 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported
  • 2023 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported
  • 2022 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported
  • 2021 · 990-PF

    Revenue
    $988,350,898
    Expenses
    $556,436,293
    Assets (EOY)
    $5,888,437,822
  • 2020 · 990-PF

    Revenue
    $526,468,189
    Expenses
    $379,422,137
    Assets (EOY)
    $3,969,456,779
  • 2019 · 990-PF

    Revenue
    $208,513,497
    Expenses
    $740,424,892
    Assets (EOY)
    $3,477,908,960
  • 2018 · 990-PF

    Revenue
    $209,338,778
    Expenses
    $215,140,011
    Assets (EOY)
    $3,477,930,189
  • 2017 · 990-PF

    Revenue
    $372,081,883
    Expenses
    $219,313,003
    Assets (EOY)
    $3,725,240,854
  • 2016 · 990-PF

    Revenue
    $255,087,605
    Expenses
    $210,244,454
    Assets (EOY)
    $3,576,983,656
  • 2015 · 990-PF

    Revenue
    $369,708,179
    Expenses
    $186,759,132
    Assets (EOY)
    $2,616,062,988

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. Showing the 10 most recent; the API carries the rest.

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

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Declared as related by

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 13 October 2026, under deductibility POF.

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 1 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.