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Nonprofit · EIN 36-3742179

TINBERG FOUNDATION

Also known as C-O RICHARD W TINBERG

Tax-exempt · WINNETKA, IL 60093

Financials

$383K$436K2023$1.3M$788K2024$367K$1M2025
Revenue Expenses · by fiscal year end
Financials of TINBERG FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990-PF$366,503$1,028,849-$662,346$2,373,497$1,774$2,371,723
December 31, 2024990-PF$1,307,378$788,061$519,317$3,039,196$5,127$3,034,069
December 31, 2023990-PF$383,460$435,884-$52,424$2,697,608$1,737$2,695,871
Financial details: 990-PF for the year ended December 31, 2025

Revenue

Dividends
$50,799
Interest
$5,171
Net gain from sales of assets
$310,533

Expenses

Grants and similar amounts paid
$1,002,500
Compensation of officers, directors and key employees
$0
Disbursements for charitable purposes
$1,002,525
Excise tax on investment income
$4,765

Balance sheet and other

Total assets, start of year
$3,039,196
Total assets, end of year
$2,373,497
Total liabilities, end of year
$1,774
Net assets, end of year
$2,371,723
Fair market value of assets
$4,701,454
Qualifying distributions
$1,002,525
Net investment income
$366,503

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
RICHARD W TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
PRESIDENT1$0
ELAINE TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
DIRECTOR1$0
CHRISTINE TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
DIRECTOR1$0
RICHARD J TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
DIRECTOR1$0
990-PF for the year ended December 31, 2024: 4 people
NameTitleHours / weekCompensation
RICHARD W TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
PRESIDENT1$0
ELAINE TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
DIRECTOR1$0
CHRISTINE TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
DIRECTOR1$0
RICHARD J TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
DIRECTOR1$0
990-PF for the year ended December 31, 2023: 4 people
NameTitleHours / weekCompensation
RICHARD W TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
PRESIDENT1$0
ELAINE TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
DIRECTOR1$0
CHRISTINE TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
DIRECTOR1$0
RICHARD J TINBERG
159 SHERIDAN ROAD, WINNETKA, IL 60093
DIRECTOR1$0

Address and contacts

Address (IRS master file)
159 SHERIDAN RD, WINNETKA, IL 60093-1554
In care of
% RICHARD W TINBERG
Signed the 990-PF
ELAINE TINBERG, DIRECTOR
Phone
(847) 441-9152
Return prepared by
CITRIN COOPERMAN ADVISORS LLC

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
36-3742179
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
1991
Accounting year ends
December
Files
Form 990-PF
Assets (IRS master file)
$2,373,497
Income (IRS master file)
$1,083,015

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-PFDecember 2025$366,503$1,028,849$2,373,497XML
990-PFDecember 2024$1,307,378$788,061$3,039,196XML
990-PFDecember 2023$383,460$435,884$2,697,608XML
990-PFDecember 2022–––IRS
990-PFDecember 2021–––IRS
990-PFDecember 2020–––IRS
990-PFDecember 2019–––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 36-3742179).

Questions about TINBERG FOUNDATION

What is the EIN of TINBERG FOUNDATION?
The employer identification number (EIN) of TINBERG FOUNDATION is 36-3742179.
Is TINBERG FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1991.
Are donations to TINBERG FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
Which annual return does TINBERG FOUNDATION file?
Form 990-PF. Private foundations file every year.
When is the next return of TINBERG FOUNDATION 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 TINBERG FOUNDATION 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 TINBERG FOUNDATION?
The 990-PF for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
How much revenue does TINBERG FOUNDATION have?
On its 990-PF for the year ended December 31, 2025 it reported revenue of $366,503, expenses of $1,028,849 and total assets of $2,373,497 at year end.

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