Private Foundation

THE THORNTON FOUNDATION DELAWARE

THE THORNTON FOUNDATION DELAWARE is a private foundation categorized as Private Foundation based in SAN MARINO, CA. Its most recent IRS filing (2025) reports revenue of $2.3M, expenses of $4.7M, total assets of $93.0M. Imperigo tracks 4 reported grants from this foundation totaling approximately $15.1M.

EIN: 844212818 SAN MARINO, CA Latest filing: 2025

Total Revenue$2.3M

Total Expenses$4.7M

Total Assets$93.0M

Grants Given4

Grant Total$15.1M

Filing Years2020–2025

Sample Grants Given

DETAILED INFORMATION AVAILABLE UPON REQUEST

SAN MARINO, CA · 2025

PUBLIC CHARITIES

$4,027,000

DETAILED INFORMATION AVAILABLE UPON REQUEST

SAN MARINO, CA · 2024

PUBLIC CHARITIES

$3,711,000

DETAILED INFORMATION AVAILABLE UPON REQUEST

SAN MARINO, CA · 2023

PUBLIC CHARITIES

$3,596,000

DETAILED INFORMATION AVAILABLE UPON REQUEST

SAN MARINO, CA · 2022

PUBLIC CHARITIES

$3,774,000

Showing up to 5 of 4 total records — full history available with membership.

Officers & Directors

SECRETARY Bette P Cook

CHAIRMAN OF THE BOARD Charles B Thornton

SECRETARY Geneva H Thornton

PRESIDENT John Meyers

CFO Robert L Zuber

Officer compensation and complete director data available with membership.

Top Grant Purposes

PUBLIC CHARITIES

$15,108,000 4 grants

Financial Trends

Year	Revenue	Expenses	Assets
2025	$2.3M	$4.7M	$93.0M
2024	$57.8M	$3.8M	$92.3M
2023	$633K	$3.7M	$63.2M
2022	$6.1M	$4.1M	$64.4M
2020	$44K	—	$52.9M

Between 2020 and 2025, reported annual revenue grew from $44K to $2.3M (+4999%), with total assets most recently reported at $93.0M.

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

Grant Geography

Grants from this foundation were reported to recipients in CA.

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

See the full picture for THE THORNTON FOUNDATION DELAWARE

Complete financials, all 4 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