Oberweiler Foundation
The Oberweiler Foundation is a private philanthropic foundation incorporated in 2000 in the State of Illinois. Based in Barrington, Illinois, the foundation manages approximately $11.7 million in assets and operates as a small organization with one full-time staff member.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
—
Annual Giving
$830K
+31.2% YoY
Grant Count
48
+9.1% YoY
Avg Grant Size
$17K
+20.3% YoY
Mission & Focus Areas
The foundation seeks to fulfill the wishes of its founders by supporting organizations that provide unique and innovative solutions to existing problems and new challenges. The foundation's targeted categories of giving include:
- Assisting sick and/or abused children (12 and under)
- Preventing the demise of America's wilderness and wetlands as a result of private exploitation and/or public encroachment
- Supporting U.S. veterans and their families in the transition back to civilian life
- Helping individuals achieve higher levels of wellness through the application of alternative medicine procedures
The foundation's mission is to fund programs primarily in Northern Illinois (Cook, Du Page, Kane, Lake, and McHenry counties), though it also supports organizations across multiple states including Arizona, Ohio, Pennsylvania, South Dakota, and Wisconsin.
Grantmaking
The foundation made 44 grants in 2023 with a median grant size of approximately $15,000 and a maximum grant of $50,000. Total distributions in 2023 were $813,000.
Grant Range
of approximately $15,000 and a maximum grant of $50,000. Total distributions in 2023 were $813,000.
How to Apply
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Geographic Focus
Where this funder awards grants
The foundation's primary funding focus is Northern Illinois, specifically Cook, Du Page, Kane, Lake, and McHenry counties. However, the foundation also supports organizations in Arizona, Ohio, Pennsylvania, South Dakota, and Wisconsin.
Grant Distribution by State
Cities
Financial History
Multi-year comparison from IRS filings
As of 2023:
- Total Assets: $11,694,577
- Total Revenues: $423,025
- Total Expenses: $1,053,938
- Total Giving: $632,413 to $813,000
- Investment Income and Dividends: $348,680
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | — | — | — |
| Revenue | — | — | — |
| Expenses | — | — | — |
| Qualifying Distributions | — | — | — |
| Net Investment Income | — | — | — |
| Distributable Amount | — | — | — |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
Grant Size Distribution
206 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for .
Leadership & Key People
Leadership team and compensation from IRS filings
- Siegfried Weiler – President
- Anna Weiler – Treasurer
- Mary Rowe – Vice President/Executive Director (full-time, $186,000 annual compensation)
- James R Bartell – Secretary
- Ronald Ohlsen – Director
- Martha Linn – Director
- Kevin Scheiwiller – Director
- Sue Sindewald – Director
Compensation Overview
From 2024 IRS filing
From 2024 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| SIEGFRIED WEILER | PRESIDENT | 0.2 | — |
| ANNA WEILER | TREASURER | 0.1 | — |
| RONALD OHLSEN | DIRECTOR | 0.1 | $200 |
| MARTHA LINN | DIRECTOR | 0.1 | $200 |
| MARY ROWE | VICE PRESIDENT/EXECUTIVE D | 40 | $180,500 |
| KEVIN SCHEIWILLER | DIRECTOR | 0.1 | $200 |
| SUE SINDEWALD | DIRECTOR | 0.1 | $200 |
Recent News & Activity
Recent developments and announcements
The foundation has supported a range of organizations addressing its core focus areas, including grants to organizations working in therapeutic riding and mental health, sustainable landscaping, environmental education, and veteran support services.
Job Ready Veterans Receives Grant from the Oberweiler FoundationSubject Areas
Focus areas based on grantmaking activity
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Data last updated April 2026. Sourced from IRS Form 990-PF filings. Research dossier generated April 2026.
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