Private Foundation

SIEBEL FAMILY CHARITABLE FOUNDATION C/O KENNETH F SIEBEL

SIEBEL FAMILY CHARITABLE FOUNDATION C/O KENNETH F SIEBEL, of ROSS, CA, is a Private Foundation tracked in Imperigo's IRS 990 database. The 2025 filing shows $179K in revenue, $93K in expenses, $568K in total assets. IRS filings disclose 102 grants awarded by this foundation, totaling roughly $467K.

EIN: 680344239 ROSS, CA Latest filing: 2025

Total Revenue$179K

Total Expenses$93K

Total Assets$568K

Grants Given102

Grant Total$467K

Filing Years2021–2025

Sample Grants Given

ROSS SCHOOL FOUNDATION

ROSS, CA · 2025

SUPPORT

$25,000

BRANSON SCHOOL

ROSS, CA · 2025

ENDOWMENT FUND

$20,000

ST ANSELM CHURCH

ROSS, CA · 2025

RESTORATION CAMPAIGN

$10,000

CONSERVATION INT'L FDN DEVELOPMENT DEPT

ARLINGTON, VA · 2025

SUPPORT

$10,000

GREENWICH COUNTRY DAY SCHOOL

GREENWICH, CT · 2025

SUPPORT

$5,000

Showing up to 5 of 102 total records — full history available with membership.

Officers & Directors

DIRECTOR Brooke S Mitchell

DIRECTOR Jennifer Siebel Newsom

DIRECTOR Jessica Siebel Gruss

TREASURER Judy A Siebel

PRESIDENT Kenneth F Siebel

DIRECTOR Melissa A Siebel Schiller

Officer compensation and complete director data available with membership.

Top Grant Purposes

SUPPORT

$400,185 91 grants

ENDOWMENT FUND

$20,000 1 grant

WILDLIFE BIOLOGY STUDY

$11,500 2 grants

RESTORATION CAMPAIGN

$10,000 1 grant

ABACO RELIEF FUND

$10,000 1 grant

Financial Trends

Year	Revenue	Expenses	Assets
2025	$179K	$93K	$568K
2024	$22K	$37K	$483K
2023	$19K	$50K	$499K
2022	$-74K	$52K	$529K
2021	$646	$78K	$655K

Between 2021 and 2025, reported annual revenue grew from $646 to $179K (+27650%), with total assets most recently reported at $568K.

Interactive year-over-year charts and full filing details available with membership.

Grant Geography

Grants from this foundation were reported to recipients in CA, CT, DC, FL, HI, MO, and 4 other states.

CACTDCFLHIMOMTNCNYVA

Full geographic grant map with state-by-state breakdown available with membership.

See the full picture for SIEBEL FAMILY CHARITABLE FOUNDATION C/O KENNETH F SIEBEL

Complete financials, all 102 grant records, officer compensation, year-over-year trend charts, a geographic grant map, and data exports — across 498,000+ organizations.

Full Financial History Complete Grant Activity Officer Compensation Year-over-Year Charts Geographic Grant Map Data Exports