Anthony and Dorothy Riddle Family Foundation
Anthony and Dorothy Riddle Family Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in BOULDER, CO. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $576K in total assets. In 2024, it awarded 5 grants totaling $37K. Net investment income was $52K.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$576K
+2.7% YoY
Annual Giving
$37K
+0.0% YoY
Grant Count
5
+25.0% YoY
Avg Grant Size
$7K
-20.0% YoY
Under IRS private-foundation payout rules, Anthony and Dorothy Riddle Family Foundation reported a distributable amount of $40K for 2024 — the minimum it must pay out in qualifying distributions.
About Anthony and Dorothy Riddle Family Foundation
Based on IRS filings
Anthony and Dorothy Riddle Family Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in BOULDER, CO. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $576K in total assets. In 2024, it awarded 5 grants totaling $37K. Net investment income was $52K.
Focus Areas
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $576,445 | $561,556 | $598,249 |
| Revenue | $53,482 | $13,033 | $16,515 |
| Expenses | $38,593 | $38,569 | $38,590 |
| Qualifying Distributions | $38,593 | $38,569 | $38,590 |
| Net Investment Income | $51,887 | $22,621 | $19,091 |
| Distributable Amount | $40,162 | $36,088 | $39,142 |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 5 recipients in 2024
Grant Size Distribution
22 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2024 grants, the largest include University of Colorado Foundation ($30,000), CU Science Discovery ($2,000), Colorado Fourteeners ($2,000).
| Recipient | Purpose | Amount |
|---|---|---|
| CU Science Discovery Boulder, CO | Scholarship and Intergenerational activity support | $2,000 |
| University of Colorado Foundation Denver, CO | Scholarships | $30,000 |
| Colorado Fourteeners Golden, CO | Preserve trails and open spaces for intergenerational interactions | $2,000 |
| Bechtel International Center Stanford, CA | Encouraging interactions with international visitors | $2,000 |
| International Topical Steroid Awareness Network Dacula, GA | Awareness of TSC | $1,000 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2024 IRS filing
From 2024 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Dorothy Kathryn Riddle | 1 | 1 | — |
| Christopher Cooper Riddle | 1 | 1 | — |
| Kathryn Riddle Penzkover | 1 | 1 | — |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is Anthony and Dorothy Riddle Family Foundation?
Anthony and Dorothy Riddle Family Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in BOULDER, CO. It holds $576K in total assets as of 2024.
How large is Anthony and Dorothy Riddle Family Foundation?
As of 2024, Anthony and Dorothy Riddle Family Foundation holds $576K in total assets with $53K in annual revenue. It awarded 5 grants totaling $37K in 2024.
Where does Anthony and Dorothy Riddle Family Foundation operate?
Anthony and Dorothy Riddle Family Foundation has awarded grants in California, Colorado, Georgia.
What size grants does Anthony and Dorothy Riddle Family Foundation award?
In 2024, Anthony and Dorothy Riddle Family Foundation awarded 5 grants totaling $37K — an average of about $7K per grant, based on its IRS Form 990 filings.
How much is Anthony and Dorothy Riddle Family Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2024, Anthony and Dorothy Riddle Family Foundation reported a distributable amount of $40K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Anthony and Dorothy Riddle Family Foundation's EIN?
Anthony and Dorothy Riddle Family Foundation's EIN (Employer Identification Number) is 73-1631943. IRS Form 990 filing data is available on this page for 2020–2024.
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Data last updated April 2026. Sourced from IRS Form 990-PF filings.
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