Marie & Mayer Winkler Peter C & Helen D

CLAYTON, MO EIN: 37-6528633

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

+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

Focus Areas

Philanthropy, Voluntarism & Grantmaking

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Geographic Focus

Where this funder awards grants

Grant Distribution by State

Missouri $883K (67%)

Florida $442K (33%)

States

Florida Missouri

Cities

Point LookoutSt LouisTampa

Financial History

Multi-year comparison from IRS filings

Revenue

Expenses

Qualifying Distributions

Net Investment Income

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

Philanthropy, Voluntarism & Grantmaking

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.