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Nonprofit · EIN 94-3256331

THOMAS AND STACEY SIEBEL FOUNDATION

Tax-exempt · REDWOOD CITY, CA 94063

Financials

$5.4M$7.4M2023$10.2M$57.1M2024
Revenue Expenses · by fiscal year end
Financials of THOMAS AND STACEY SIEBEL FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2024990-PF$10,241,925$57,108,769-$46,866,844$69,890,219$302,805$69,587,414
December 31, 2023990-PF$5,396,362$7,394,501-$1,998,139$116,780,977$326,722$116,454,255
Financial details: 990-PF for the year ended December 31, 2024

Revenue

Contributions, gifts and grants
$0
Dividends
$1,851,688
Net gain from sales of assets
$6,109,081
Other income
$2,281,156

Expenses

Grants and similar amounts paid
$55,963,000
Compensation of officers, directors and key employees
$0
Disbursements for charitable purposes
$56,128,508
Excise tax on investment income
$93,648

Balance sheet and other

Total assets, start of year
$116,780,977
Total assets, end of year
$69,890,219
Total liabilities, end of year
$302,805
Net assets, end of year
$69,587,414
Fair market value of assets
$69,890,219
Qualifying distributions
$56,128,508
Net investment income
$7,196,510

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, 2024, highest compensation first.

NameTitleHours / weekCompensation
THOMAS M SIEBEL
PO BOX 5287, REDWOOD CITY, CA 94063
PRESIDENT1$0
STACEY SIEBEL
PO BOX 5287, REDWOOD CITY, CA 94063
SECRETARY/CFO/TREASURER1$0
990-PF for the year ended December 31, 2023: 3 people
NameTitleHours / weekCompensation
THOMAS M SIEBEL
PO BOX 5287, REDWOOD CITY, CA 94063
PRESIDENT1$0
STACEY SIEBEL
PO BOX 5287, REDWOOD CITY, CA 94063
SECRETARY/CFO/TREASURER1$0
JENNIFER STERN
PO BOX 5287, REDWOOD CITY, CA 94063
DIRECTOR1$0

Address and contacts

Address (IRS master file)
PO BOX 5287, REDWOOD CITY, CA 94063-0287
In care of
% THOMAS M SIEBEL
Signed the 990-PF
THOMAS M SIEBEL, PRESIDENT
Phone
(650) 299-5200
Return prepared by
FRANK RIMERMAN CO LLP

California records

California keeps its own records of charities and corporations. Search them by EIN 94-3256331 or by the name THOMAS AND STACEY SIEBEL FOUNDATION.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

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, 2026Not on file
2024December 31, 2024May 15, 2025990-PF on file
2023December 31, 2023May 15, 2024990-PF on file

IRS record

EIN
94-3256331
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
1997
Accounting year ends
December
Files
Form 990-PF
Assets (IRS master file)
$69,890,219
Income (IRS master file)
$86,588,655

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-PFDecember 2024$10,241,925$57,108,769$69,890,219XML
990-TDecember 2024–––IRS
990-PFDecember 2023$5,396,362$7,394,501$116,780,977XML
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-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 94-3256331).

Questions about THOMAS AND STACEY SIEBEL FOUNDATION

What is the EIN of THOMAS AND STACEY SIEBEL FOUNDATION?
The employer identification number (EIN) of THOMAS AND STACEY SIEBEL FOUNDATION is 94-3256331.
Is THOMAS AND STACEY SIEBEL FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1997.
Are donations to THOMAS AND STACEY SIEBEL FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
Which annual return does THOMAS AND STACEY SIEBEL FOUNDATION file?
Form 990-PF. Private foundations file every year.
When is the next return of THOMAS AND STACEY SIEBEL FOUNDATION due?
The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did THOMAS AND STACEY SIEBEL FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990-PF for the year ended December 2024.
Who are the officers and directors of THOMAS AND STACEY SIEBEL FOUNDATION?
The 990-PF for the year ended December 31, 2024 lists 2 people; 0 received compensation from the organization.
How much revenue does THOMAS AND STACEY SIEBEL FOUNDATION have?
On its 990-PF for the year ended December 31, 2024 it reported revenue of $10,241,925, expenses of $57,108,769 and total assets of $69,890,219 at year end.

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