Katherine Harding Wunder Foundation
Katherine Harding Wunder Foundation is a private foundation, based in Jupiter, FL. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $1.8M in total assets. In 2025, it awarded 8 grants totaling $70K. Net investment income was $132K.
Katherine Harding Wunder Foundation at a glance
In short: Katherine Harding Wunder Foundation gave $70K across 8 grants in 2025 (avg $9K), top state Florida. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $70,000
- +27.3% vs 2024
- Grants made (2025)
- 8
- -20.0% vs 2024
- Average grant
- $8,750
- +59.1% vs 2024
- Median grant
- $7,500
- Total assets
- $1,763,847
- +17.8% vs 2024
- Primary geography
- Florida (43% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Katherine Harding Wunder Foundation funds
How this funder distributes its grants
Top Recipients
Top 8 recipients in 2025
The largest 2025 recipient was Jupiter Medical Center Foundation ($15K). Together the top 8 received $70K.
Grant Size Distribution
45 grants across all recorded years
The most common grant size was under $50K: 45 grants of 45 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 8 itemized grants.
Cities
How Katherine Harding Wunder Foundation gives
- Giving grew 40% from 2022 to 2025. Method
- In 2025 it paid out 86% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2025, annual grant giving ranged from $28K (2019) to $70K (2025). In 2025 it made 8 grants totaling $70K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Jupiter Medical Center Foundation Jupiter, FL | General Fund | $15,000 |
| Destination Theatre Atlanta, GA | General Fund | $15,000 |
| Your Dog's Friend Rockville, MD | General Fund | $14,000 |
| Maltz Jupiter Theatre Jupiter, FL | General Fund | $10,000 |
| JL Cares Jupiter, FL | General Fund | $5,000 |
| Angels Among US Pet Rescue Alpharetta, GA | General Fund | $5,000 |
| C&O Canal Trust Hagerstown, MD | General Fund | $3,500 |
| Therapeutic Riding Center Glenwood, MD | General Fund | $2,500 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $1,763,847 | $358,506 | $91,674 | $70,000 | 8 | $70,000 | $131,630 | $81,685 |
| 2024 | $1,497,015 | $314,616 | $72,023 | $55,000 | 10 | $55,000 | $98,919 | $69,465 |
| 2023 | $1,254,422 | $142,127 | $62,554 | $50,000 | 10 | $50,000 | $28,348 | $53,768 |
| 2022 | $1,174,849 | $149,419 | $63,362 | $50,000 | 9 | $50,000 | $36,054 | $51,355 |
| 2021 | $1,088,792 | $313,763 | $52,019 | $40,000 | 8 | $40,000 | $100,555 | $49,147 |
| 2020 | $827,048 | $138,933 | $42,325 | $33,000 | 8 | — | $29,608 | $38,398 |
| 2019 | $730,440 | $128,296 | $36,478 | $28,000 | 7 | — | $19,697 | $33,978 |
Under IRS private-foundation payout rules, Katherine Harding Wunder Foundation reported a distributable amount of $82K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Katherine Harding Wunder Foundation is led by Katherine H. Wunder, President on every filing since 2019; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Katherine H. Wunder
President
On filings since 2019
No compensation reported
William P. Wunder Sr.
Secretary
On filings since 2019
No compensation reported
Data from IRS Form 990 filings, 2019–2025. "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 Katherine Harding Wunder Foundation
How much does Katherine Harding Wunder Foundation give each year?
Katherine Harding Wunder Foundation gave $70K across 8 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $55K across 10 grants.
What is Katherine Harding Wunder Foundation's typical grant size?
Katherine Harding Wunder Foundation's median grant in 2025 was $7,500, and its average grant was $8,750, across 8 grants on its 2025 IRS Form 990-PF.
Where does Katherine Harding Wunder Foundation give grants?
Katherine Harding Wunder Foundation's top state is Florida, with 43% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were Maryland (29%) and Georgia (29%). The most frequent recipient cities were Jupiter, FL (3 grants).
Does Katherine Harding Wunder Foundation give general operating support?
Yes: 100% of Katherine Harding Wunder Foundation's 2025 grants with a stated purpose (8 of 8) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Katherine Harding Wunder Foundation's largest grantees?
Katherine Harding Wunder Foundation's largest 2025 grantees include Jupiter Medical Center Foundation ($15,000), Destination Theatre ($15,000) and Your Dog's Friend ($14,000), according to its 2025 IRS Form 990-PF. Together they received 63% of its itemized 2025 grant dollars.
How large is Katherine Harding Wunder Foundation?
Katherine Harding Wunder Foundation reported $1.8M in total assets on its 2025 IRS Form 990-PF. It paid out $70K in qualifying distributions that year, against a required minimum of $82K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
What is Katherine Harding Wunder Foundation's EIN?
Katherine Harding Wunder Foundation's EIN (Employer Identification Number) is 30-0712271. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS June 5, 2020)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS May 11, 2026)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS November 2, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS November 1, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 15, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 13, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 12, 2025)
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