Zwirner Foundation
Zwirner Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in Hinsdale, IL. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $26.4M in total assets. In 2024, it awarded 1 grant totaling $2.1M. Net investment income was $1.3M.
Key facts about Zwirner Foundation
In short: Zwirner Foundation gave $2.1M across 1 grant in 2024 (avg $2.1M), mostly in Illinois. Source: 2024 IRS Form 990-PF.
- EIN
- 82-5238719
- Latest 990 filing
- Form 990-PF, 2024
- Annual giving (2024)
- $2,150,000
- Grants made (2024)
- 1
- Average grant
- $2,150,000
- Median grant
- $2,150,000
- Total assets
- $26,424,018
- Primary geography
- Illinois (100% of itemized 2024 grant dollars)
Data from IRS Form 990-PF, 2024; updated September 2026.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$26.4M
-3.2% YoY
Annual Giving
$2.1M
+34.4% YoY
Grant Count
1
+0.0% YoY
Avg Grant Size
$2.1M
+34.4% YoY
Under IRS private-foundation payout rules, Zwirner Foundation reported a distributable amount of $1.5M for 2024 — the minimum it must pay out in qualifying distributions.
How Zwirner Foundation gives
- Giving grew 59% from 2021 to 2024. Method
- In 2024 it paid out 142% of its IRS minimum distribution (the 5% rule). Method
From the foundation's IRS Form 990-PF filings. Methodology.
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of all 1 itemized 2024 grant dollars.
States
Cities
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 1 recipients in 2024
Grant Size Distribution
5 grants across all recorded years
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| ORPHANS OF THE STORM ANIMAL SHELTER (EIN 36-6002114) Riverwoods, IL | FOR HOUSING, CARE AND MEDICAL TREATMENT OF ANIMALS | $2,150,000 |
Financial History
Multi-year comparison from IRS filings
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $26,424,018 | $27,289,956 | $29,638,310 |
| Revenue | $1,444,983 | $1,098,781 | $871,188 |
| Expenses | $2,310,921 | $1,742,135 | $1,738,268 |
| Qualifying Distributions | $2,158,576 | $1,618,149 | $1,619,289 |
| Net Investment Income | $1,307,822 | $983,009 | $874,005 |
| Distributable Amount | $1,521,159 | $1,444,153 | $1,530,269 |
Data update history
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
Leadership & Key People
Officers and directors from IRS filings
Zwirner Foundation is led by Donna L. Heggie, President on every filing since 2020; none of the 3 officers listed in 2024 report compensation.
Officers on the 2024 filing
Donna L. Heggie
President
On filings since 2020
5 hrs/week
No compensation reported
Carol A. McGuire
Secretary
Officer → Secretary, 2021
On filings since 2020
1 hr/week
No compensation reported
William R. Zwirner
Treasurer
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about Zwirner Foundation
How much does Zwirner Foundation give each year?
Zwirner Foundation gave $2.1M across 1 grant in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $1.6M across 1 grant.
How large is Zwirner Foundation?
Zwirner Foundation reported $26.4M in total assets on its 2024 IRS Form 990-PF. It paid out $2.2M in qualifying distributions that year, against a required minimum of $1.5M (roughly 5% of its investment assets).
What is Zwirner Foundation?
Zwirner Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in Hinsdale, IL. It holds $26.4M in total assets as of 2024.
Where does Zwirner Foundation operate?
Zwirner Foundation has awarded grants in Illinois.
What is Zwirner Foundation's EIN?
Zwirner Foundation's EIN (Employer Identification Number) is 82-5238719. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Here's the math on researching Zwirner Foundation by hand.
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