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Nonprofit · EIN 26-1087473

ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC

Tax-exempt · PRINCETON, NJ 08540

Financials

$12K$12K2023$50K$55K2024$74K$64K2025
Revenue Expenses · by fiscal year end
Financials of ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990-PF$74,013$63,586$10,427$1,021,778$0$1,021,778
December 31, 2024990-PF$50,095$55,364-$5,269$974,599$0$974,599
December 31, 2023990-PF$11,834$12,141-$307$921,147$0$921,147
Financial details: 990-PF for the year ended December 31, 2025

Revenue

Dividends
$27,803
Net gain from sales of assets
$45,904
Other income
$306

Expenses

Grants and similar amounts paid
$50,000
Compensation of officers, directors and key employees
$0
Disbursements for charitable purposes
$53,189
Excise tax on investment income
$880

Balance sheet and other

Total assets, start of year
$974,599
Total assets, end of year
$1,021,778
Total liabilities, end of year
$0
Net assets, end of year
$1,021,778
Fair market value of assets
$1,021,778
Qualifying distributions
$53,189
Net investment income
$73,709

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990-PF for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
LUCY R WALETZKY MD
C/O HC 650 COLLEGE RD EAST, PRINCETON, NJ 08540
PRESIDENT/DIRECTOR1$0
JAMES R HAMILTON
C/O HC 650 COLLEGE RD EAST, PRINCETON, NJ 08540
SECRETARY/DIRECTOR1$0
DAVID ROCKEFELLER JR
30 ROCKEFELLER PLAZA, NEW YORK, NY 10112
DIRECTOR1$0
990-PF for the year ended December 31, 2024: 3 people
NameTitleHours / weekCompensation
LUCY R WALETZKY MD
C/O HC 650 COLLEGE RD EAST, PRINCETON, NJ 08540
PRESIDENT/DIRECTOR1$0
JAMES R HAMILTON
C/O HC 650 COLLEGE RD EAST, PRINCETON, NJ 08540
SECRETARY/DIRECTOR1$0
DAVID ROCKEFELLER JR
30 ROCKEFELLER PLAZA, NEW YORK, NY 10112
DIRECTOR1$0
990-PF for the year ended December 31, 2023: 3 people
NameTitleHours / weekCompensation
LUCY R WALETZKY MD
C/O HC 600 COLLEGE RD EAST STE 4200, PRINCETON, NJ 08540
PRESIDENT/DIRECTOR1$0
JAMES R HAMILTON
C/O HC 600 COLLEGE RD EAST STE 4200, PRINCETON, NJ 08540
SECRETARY/DIRECTOR1$0
DAVID ROCKEFELLER JR
30 ROCKEFELLER PLAZA, NEW YORK, NY 10112
DIRECTOR1$0

Address and contacts

Address (IRS master file)
650 COLLEGE ROAD EAST, PRINCETON, NJ 08540-6603
In care of
% HAMILTON & CO
Signed the 990-PF
JAMES R HAMILTON, SECRETARY
Phone
(609) 452-0300
Return prepared by
RSM US LLP

What it must file and when

IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-PF on file
2024December 31, 2024May 15, 2025990-PF on file
2023December 31, 2023May 15, 2024990-PF on file

IRS record

EIN
26-1087473
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Private non-operating foundation
Donations deductible (Pub 78)
Private foundation, 30% limit
Exempt since
2007
Accounting year ends
December
Files
Form 990-PF
Assets (IRS master file)
$1,021,778
Income (IRS master file)
$258,438

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-PFDecember 2025$74,013$63,586$1,021,778XML
990-TDecember 2025–––IRS
990-PFDecember 2024$50,095$55,364$974,599XML
990-TDecember 2024–––IRS
990-PFDecember 2023$11,834$12,141$921,147XML
990-TDecember 2023–––IRS
990-PFDecember 2022–––IRS
990-TDecember 2022–––IRS
990-PFDecember 2021–––IRS
990-TDecember 2021–––IRS
990-PFDecember 2020–––IRS
990-TDecember 2020–––IRS
990-PFDecember 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 26-1087473).

Questions about ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC

What is the EIN of ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC?
The employer identification number (EIN) of ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC is 26-1087473.
Is ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2007.
Are donations to ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
Which annual return does ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC file?
Form 990-PF. Private foundations file every year.
When is the next return of ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC last file with the IRS?
The latest return in the IRS public files is the 990-PF for the year ended December 2025.
Who are the officers and directors of ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC?
The 990-PF for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
How much revenue does ROCKEFELLER STATE PARK PRESERVE CONSERVANCY INC have?
On its 990-PF for the year ended December 31, 2025 it reported revenue of $74,013, expenses of $63,586 and total assets of $1,021,778 at year end.

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