Clack Foundation Inc
Clack Foundation Inc is a private foundation based in Windsor, Wisconsin. In 2025, it gave grants to charitable organizations, with recipients including the University of Wisconsin Foundation, Cincinnati Children’s Hospital, and organizations serving people with disabilities, supporting animal welfare, and providing outdoor and community programs.
Clack Foundation Inc at a glance
In short: Clack Foundation Inc gave $1.3M across 20 grants in 2025 (avg $64K), mostly in Wisconsin. 35% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $1,277,408
- +12.9% vs 2024
- Grants made (2025)
- 20
- +150.0% vs 2024
- Average grant
- $63,870
- -54.8% vs 2024
- Median grant
- $25,000
- Total assets
- $35,551,735
- +16.5% vs 2024
- New grantees (estimate)
- 35% first-time grantees (7 of 20, 2025; small sample)
- Primary geography
- Wisconsin (66% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Clack Foundation Inc
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: 6679 Highland Drive, Windsor, WI 53598
Phone: (608) 846-3010
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Clack Foundation Inc funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was University of Wisconsin Foundation ($488K). Together the top 10 received $1.2M.
Grant Size Distribution
61 grants across all recorded years
The most common grant size was under $50K: 34 grants of 61 (56%).
Geographic Focus
Where this funder awards grants
In 2025, 66% of grant dollars went to recipients in Wisconsin, 29% to recipients in Ohio, and 5% to recipients in Illinois.
Grant Distribution by State
Share of 2025 grant dollars across all 20 itemized grants.
Cities
Is Clack Foundation Inc open to new grantees?
35%
first-time grantees, 2025
In 2025, 7 of 20 grantees (35%) were first-time recipients. With only 20 grantees, that is a small sample: one grantee more or less moves the share by about 5 points. First grants averaged $16K; repeat grants $90K. How we count
Medians: $10K first-time, $50K repeat.
- 40% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (−18%). Method
- In 2025 it paid out 95% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $704K (2020) to $1.7M (2023). In 2025 it made 20 grants totaling $1.3M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| University of Wisconsin Foundation Madison, WI | The university of Wisconsin foundation raises, invests and distributes funds for the benefit of the university of Wisconsin madison. | $488,000 |
| Cincinnati Children's Hospital Cincinnati, OH | In support of the clack foundation adult tuberous sclerosis complex (TSC) fund. | $300,000 |
| Marc Inc Madison, WI | Assist with community and center-based employment, day services, and personal care for adults with developmental disabilities in Dane county, Wisconsin. | $77,408 |
| Canine Companions for Independence New Albany, OH | Positively affect the lives of people with physical disabilities. Dogs are trained to provide assistance and companionship to people with physical disabilities at no or low cost to the recipient. | $70,000 |
| Easter Seals Wisconsin Inc Middleton, WI | To support programming for children and adults with disabilities and their families and caregivers. | $60,000 |
| Winman Trails Inc Manitowish Waters, WI | To support the adventure park and community gathering space for residents and visitors to experience outstanding trails and upscale facilities that inspire active, outdoor lifestyles. | $50,000 |
| Foundation for International Education in Neurological Surgery Madison, WI | The fiens mission is to improve the care of individuals with neurological disease throughout the world by support of education in neurosurgery, particularly via partnerships between established and emerging neurosurgical programs. | $50,000 |
| Humane Animal Welfare Society Waukesha, WI | To support the mission of leading the community in animal welfare and assuring sanctuary for animals in need. | $30,000 |
| Tails Together CO Wilmette, IL | To support animal welfare in chicago and the north shore by connecting animals, organizations, and communities through collaboration, compassionate care, and accessible education. | $30,000 |
| Misericordia Foundation Chicago, IL | To enrich the lives of children and adults with intellectual and developmental disabilities. | $30,000 |
Ready to take the next step with Clack Foundation Inc?
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 | $35,551,735 | $5,877,245 | $1,478,678 | $1,277,408 | 20 | $1,287,696 | $2,673,413 | $1,353,174 |
| 2024 | $30,519,021 | $6,489,171 | $1,255,198 | $1,131,154 | 8 | $1,141,640 | $3,378,271 | $1,128,325 |
| 2023 | $26,760,584 | $4,749,320 | $1,816,885 | $1,707,342 | 11 | $1,717,187 | $1,614,160 | $922,500 |
| 2022 | $22,854,624 | $3,111,073 | $1,701,323 | $1,554,712 | 10 | $1,567,027 | $1,838,542 | $846,015 |
| 2021 | $24,401,731 | $5,358,174 | $839,273 | $740,030 | 12 | $744,912 | $2,771,470 | $797,877 |
| 2020 | $20,405,134 | $2,641,663 | $775,211 | $704,039 | 15 | — | $1,333,901 | $636,381 |
Under IRS private-foundation payout rules, Clack Foundation Inc reported a distributable amount of $1.4M for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
The filing does not state a mission for the foundation. Its 2025 grants show support for a range of organizations and purposes. For example, the University of Wisconsin Foundation received a grant for the benefit of the University of Wisconsin–Madison. Easter Seals Wisconsin describes its mission as increasing independence and quality of life for people with disabilities. WinMan Trails says it inspires adventure and strengthens community through outdoor trail experiences. Misericordia Foundation says it raises funds for Misericordia Home.
Other 2025 grants supported a fund for adults with tuberous sclerosis complex at Cincinnati Children’s Hospital, employment and day services for adults with developmental disabilities at MARC Inc, and animal-welfare organizations including Humane Animal Welfare Society and Tails to Together Co.
Grantmaking
In filing year 2025, the foundation made 20 grants totaling $1,277,408. Grants ranged from $1,000 to $488,000, with a median grant of $25,000. The largest grants included $488,000 to the University of Wisconsin Foundation, $300,000 to Cincinnati Children’s Hospital in support of the Clack Foundation Adult TSC Fund, and $77,408 to MARC Inc for services for adults with developmental disabilities in Dane County, Wisconsin.
Leadership & Key People
Officers and directors from IRS filings
Clack Foundation Inc is led by L. Susan Clack, President & Director on every filing since 2020; none of the 4 officers listed in 2025 report compensation.
Officers on the 2025 filing
L. Susan Clack
President & Director
On filings since 2020
2 hrs/week
No compensation reported
Brittany A. Moore
Director
On filings since 2020
1 hr/week
No compensation reported
Richard E. Clack
Secretary, Treasurer & Director
On filings since 2020
1 hr/week
No compensation reported
Tara M. Bell
Director
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2025. "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 Clack Foundation Inc
How much does Clack Foundation Inc give each year?
Clack Foundation Inc gave $1.3M across 20 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $1.1M across 8 grants.
What is Clack Foundation Inc's typical grant size?
Clack Foundation Inc's median grant in 2025 was $25,000, and its average grant was $63,870, across 20 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Clack Foundation Inc that year got $16K on average.
Where does Clack Foundation Inc give grants?
Clack Foundation Inc gives mostly in Wisconsin: 66% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest states were Ohio (29%) and Illinois (5%). The most frequent recipient cities were Manitowish Waters, WI (5 grants) and Madison, WI (4 grants).
Does Clack Foundation Inc give general operating support?
Not in 2025: none of the 20 grants with a stated purpose on Clack Foundation Inc's 2025 IRS Form 990-PF were described as general or operating support.
Who are Clack Foundation Inc's largest grantees?
Clack Foundation Inc's largest 2025 grantees include University of Wisconsin Foundation ($488,000), Cincinnati Children's Hospital ($300,000) and Marc Inc ($77,408), according to its 2025 IRS Form 990-PF. Together they received 68% of its itemized 2025 grant dollars.
How large is Clack Foundation Inc?
Clack Foundation Inc reported $35.6M in total assets on its 2025 IRS Form 990-PF. It paid out $1.3M in qualifying distributions that year, against a required minimum of $1.4M (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 does Clack Foundation Inc fund?
The filing does not state a mission for the foundation. Its 2025 grants show support for a range of organizations and purposes. For example, the University of Wisconsin Foundation received a grant for the benefit of the University of Wisconsin–Madison. See mission & focus areas ↑
How do I apply for a grant from Clack Foundation Inc?
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Clack Foundation Inc's EIN?
Clack Foundation Inc's EIN (Employer Identification Number) is 20-8080870. IRS Form 990 filing data is available on this page for 2020–2025.
Does Clack Foundation Inc accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(2)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS July 29, 2026)
- IRS filings on file for fiscal years 2020–2024
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Cite this profile
Grantable. (2026). Clack Foundation Inc funder profile. GrantGraph. Retrieved October 15, 2026, from https://grantable.co/funders/clack-foundation-inc-morg_575f173cfe9148a38b47705052fccfb6
BibTeX
@misc{grantable_208080870_2026,
author = {{Grantable}},
title = {{Clack Foundation Inc funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/clack-foundation-inc-morg_575f173cfe9148a38b47705052fccfb6},
note = {Accessed 2026-10-15. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from Clack Foundation Inc's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
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