Private Foundation

ANTHONY AND DOROTHY RIDDLE FAMILY FOUNDATION

ANTHONY AND DOROTHY RIDDLE FAMILY FOUNDATION, of BOULDER, CO, is a Private Foundation tracked in Imperigo's IRS 990 database. The 2025 filing shows $42K in revenue, $43K in expenses, $575K in total assets. IRS filings disclose 28 grants awarded by this foundation, totaling roughly $228K.

EIN: 731631943 BOULDER, CO Latest filing: 2025

Total Revenue$42K

Total Expenses$43K

Total Assets$575K

Grants Given28

Grant Total$228K

Filing Years2021–2025

Sample Grants Given

University of Colorado Foundation

Denver, CO · 2025

Scholarships

$30,000

Bechtel International Center

Stanford, CA · 2025

Encouraging interactions with international visitors

$4,000

CU Science Discovery

Boulder, CO · 2025

Scholarship and Intergenerational activity support

$2,000

Colorado Fourteeners

Golden, CO · 2025

Preserve trails and open spaces for intergenerational interactions

$2,000

International Topical Steroid Awareness Network

Dacula, GA · 2025

Awareness of TSC

$1,000

Showing up to 5 of 28 total records — full history available with membership.

Officers & Directors

1 Christopher Cooper Riddle

1 Dorothy Kathryn Riddle

1 Kathryn Riddle Penzkover

Officer compensation and complete director data available with membership.

Top Grant Purposes

Scholarships

$60,000 2 grants

Support of Scholarships in the Arts and Culture

$35,000 1 grant

Support ongoing activities of the Foundation endowment

$30,000 1 grant

Support of scholarship in Arts and Culture

$30,000 1 grant

Maintenance of scholarship to support the arts

$24,000 1 grant

Financial Trends

Year	Revenue	Expenses	Assets
2025	$42K	$43K	$575K
2024	$53K	$39K	$576K
2023	$13K	$39K	$562K
2022	$17K	$39K	$598K
2021	$62K	$45K	$620K

Between 2021 and 2025, reported annual revenue declined from $62K to $42K (-33%), with total assets most recently reported at $575K.

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

Grant Geography

Grants from this foundation were reported to recipients in AZ, CA, CO, GA.

AZCACOGA

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

See the full picture for ANTHONY AND DOROTHY RIDDLE FAMILY FOUNDATION

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