THOMAS AND STACEY SIEBEL FOUNDATION

Nonpartisan civic infrastructure

AllCiv·Legis1

Thomas and Stacey Siebel Foundation

Private foundation

DBA: % THOMAS M SIEBEL

Foundations · REDWOOD CITY, CA · EIN 94-3256331

In care of Thomas M Siebel

Donations are tax-deductible

FY ending 2024-12-31

Revenue

—

Expenses

—

Assets

$69.9M

Liabilities

$303K

No revenue/expense data reported.

Campaign Spending

—

Lobbying

—

Grants Given

$56.0M

THOMAS AND STACEY SIEBEL FOUNDATION

Your actions

PO BOX 5287

Redwood City, CA, 94063-028

Public records

Full 990 PDFs going back to 2001, plus parsed financial extracts. The easiest place to read actual filings.

IRS-side authoritative source. Confirms current exempt status and pulls the latest determination letter.

These open in a new tab. AllCiv doesn't host filings directly — these are the authoritative public-record sources.