Marie & Mayer Winkler Peter C & Helen D
Marie & Mayer Winkler Peter C & Helen D is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in CLAYTON, MO. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $4.4M in total assets. In 2025, it awarded 3 grants totaling $290K. Net investment income was $318K.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
$4.4M
+0.4% YoY
Annual Giving
$290K
+11.5% YoY
Grant Count
3
+0.0% YoY
Avg Grant Size
$97K
+11.5% YoY
Under IRS private-foundation payout rules, Marie & Mayer Winkler Peter C & Helen D reported a distributable amount of $271K for 2025 — the minimum it must pay out in qualifying distributions.
About Marie & Mayer Winkler Peter C & Helen D
Based on IRS filings
Marie & Mayer Winkler Peter C & Helen D is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in CLAYTON, MO. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $4.4M in total assets. In 2025, it awarded 3 grants totaling $290K. Net investment income was $318K.
Focus Areas
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $4,400,742 | $4,384,647 | $4,506,605 |
| Revenue | $368,035 | $200,639 | $466,856 |
| Expenses | $351,947 | $322,573 | $340,423 |
| Qualifying Distributions | $302,100 | $271,306 | $285,873 |
| Net Investment Income | $318,189 | $154,074 | $420,869 |
| Distributable Amount | $271,252 | $256,541 | $241,602 |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 3 recipients in 2025
Grant Size Distribution
15 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2025 grants, the largest include Shriners Hospital for Children ($96,667), St Louis University ($96,667), School of the Ozarks ($96,667).
| Recipient | Purpose | Amount |
|---|---|---|
| SHRINERS HOSPITAL FOR CHILDREN TAMPA, FL | GENERAL OPERATIONS | $96,667 |
| ST LOUIS UNIVERSITY ST LOUIS, MO | GENERAL OPERATIONS | $96,667 |
| SCHOOL OF THE OZARKS POINT LOOKOUT, MO | GENERAL OPERATIONS | $96,667 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2025 IRS filing
From 2025 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| LEONARD L DENK | CO-TRUSTEE | 2 | $11,349 |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is Marie & Mayer Winkler Peter C & Helen D?
Marie & Mayer Winkler Peter C & Helen D is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in CLAYTON, MO. It holds $4.4M in total assets as of 2025.
How large is Marie & Mayer Winkler Peter C & Helen D?
As of 2025, Marie & Mayer Winkler Peter C & Helen D holds $4.4M in total assets with $368K in annual revenue. It awarded 3 grants totaling $290K in 2025.
Where does Marie & Mayer Winkler Peter C & Helen D operate?
Marie & Mayer Winkler Peter C & Helen D has awarded grants in Florida, Missouri.
What size grants does Marie & Mayer Winkler Peter C & Helen D award?
In 2025, Marie & Mayer Winkler Peter C & Helen D awarded 3 grants totaling $290K — an average of about $97K per grant, based on its IRS Form 990 filings.
How much is Marie & Mayer Winkler Peter C & Helen D required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2025, Marie & Mayer Winkler Peter C & Helen D reported a distributable amount of $271K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Marie & Mayer Winkler Peter C & Helen D's EIN?
Marie & Mayer Winkler Peter C & Helen D's EIN (Employer Identification Number) is 37-6528633. IRS Form 990 filing data is available on this page for 2020–2025.
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Data last updated April 2026. Sourced from IRS Form 990-PF filings.