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OPEN SPACE INSTITUTE LAND TRUST INC

EIN 13-3028060 NEW YORK, NY

Revenue 2024
$73,114,837
Expenses 2024
$30,031,620

Program services were 80.1% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
C340
Classification
1000
Street
1370 BROADWAY 5TH FLOOR

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.

  • AMELIA SALZMAN

    CO-CHAIRPERSON OF THE BOARD

    Total calculated
    $0
    Hours/week
    3 + 3 related

  • ANSON FRELINGHUYSEN

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • CAROL ASH

    VICE-CHAIRPERSON OF THE BOARD

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • CAROLYN NIEMCZYK

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • DALE S BRYK

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • DOUGLAS BATESON

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • ELIZABETH BORDEN

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • GIGI MORTIMER

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • GIORGIOS VLAMIS

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • HOLLY HEGENER

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • HUME R STEYER

    SECRETARY

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • JOHN ERNST

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • JOHN H ADAMS

    CO-CHAIRPERSON OF THE BOARD (OUTGOING)

    Total calculated
    $0
    Hours/week
    3 + 3 related

  • JOHN P CAHILL

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • JOSHUA GINSBERG PHD

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • JUDE WU ABEL

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • KATHERINE O ROBERTS

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • LEA PAINE HIGHET

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • LEISLE LIN

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • MARJORIE VAN DERCOOK

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • NICOLE HYLTON-PATTERSON

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • PATRICIA F SULLIVAN

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • RICHARD REMMER

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • SAMUEL G HUBER

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

  • SUSAN BABCOCK

    MEMBER

    Total calculated
    $0
    Hours/week
    1 + 1 related

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
    $73,114,837
    Expenses
    $30,031,620
    Contributions
    $49,213,843
    Grants paid
    $9,932,882
  • 2023
    Revenue
    $74,821,096
    Expenses
    $76,852,095
    Contributions
    $60,878,933
    Grants paid
    $55,007,963
  • 2022
    Revenue
    $53,815,893
    Expenses
    $35,366,206
    Contributions
    $28,710,013
    Grants paid
    $13,682,145

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

Nonprofiteer parses the Form 990 only. 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

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

Where these grants went next →

Grants received

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

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 on its 2024 return

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 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.