Mark a and Deborah a Wilhelm Foundation
The Mark A and Deborah A Wilhelm Foundation is a private foundation based in Naples, Florida. Its 2024 IRS filing is marked as a final return and reports a complete liquidation and termination, so the foundation appears to have wound down and stopped grantmaking.
Mark a and Deborah a Wilhelm Foundation at a glance
In short: Mark a and Deborah a Wilhelm Foundation gave $302K across 24 grants in 2024 (avg $13K), mostly in Florida. 33% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $302,209
- +1784.3% vs 2023
- Grants made (2024)
- 24
- -14.3% vs 2023
- Average grant
- $12,592
- +2098.4% vs 2023
- Median grant
- $250
- New grantees (estimate)
- 33% first-time grantees (8 of 24, 2024; small sample)
- Primary geography
- Florida (94% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Mark a and Deborah a Wilhelm Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation does not accept unsolicited requests. Its filing says it makes contributions only to preselected charitable organizations; the filing is marked final.
- Contact
Mailing address: 11125 Gulf Shore Drive 402, Naples, FL 34108
Phone: (314) 576-2977
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Mark a and Deborah a Wilhelm Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was Raymond James Charitable ($285K). Together the top 10 received $299K.
Grant Size Distribution
175 grants across all recorded years
The most common grant size was under $50K: 174 grants of 175 (99%).
Geographic Focus
Where this funder awards grants
The 2024 grant dollars were distributed primarily to recipients in Florida (94%), followed by Missouri (4%), Virginia (1%), Michigan (0%), and the District of Columbia (0%). These figures describe the locations of listed recipients, not a stated geographic policy.
Grant Distribution by State
Share of 2024 grant dollars across all 24 itemized grants.
States
Cities
Is Mark a and Deborah a Wilhelm Foundation open to new grantees?
33%
first-time grantees, 2024
In 2024, 8 of 24 grantees (33%) were first-time recipients. With only 24 grantees, that is a small sample: one grantee more or less moves the share by about 4 points. First grants averaged $36K; repeat grants $762. How we count
Medians: $425 first-time, $250 repeat.
- 38% of 2024 grantees were also funded in 2023. Method
- Giving grew 1731% from 2021 to 2024. Method
- In 2024 it paid out well above its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2024). 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 2024, annual grant giving ranged from $16K (2023) to $302K (2024). In 2024 it made 24 grants totaling $302K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Raymond James Charitable St Petersburg, FL | General | $284,975 |
| Boys Hope Girls Hope St. Louis, MO | General | $8,086 |
| Annual Diocesan Appeal Co the Catholic Community Foundation Richmond, VA | General | $2,500 |
| Our Angels' Wings Springfield, MO | General | $1,000 |
| Backstoppers St. Louis, MO | General | $500 |
| Detroit Red Wings Alumni Clarkston, MI | General | $500 |
| United Way of Greater St Louis St. Louis, MO | General | $500 |
| Archdioceases of the Military Services Washington, DC | General | $350 |
| Forest Park Forever St. Louis, MO | General | $300 |
| Queen of the Holy Rosary St. Louis, MO | General | $300 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | — | $43,555 | $313,847 | $302,209 | 24 | $302,209 | $38,888 | $17,945 |
| 2023 | $270,292 | $14,083 | $20,564 | $16,038 | 28 | $16,038 | $12,281 | $17,234 |
| 2022 | $276,773 | $19,311 | $25,422 | $19,277 | 38 | $19,277 | $17,099 | $17,542 |
| 2021 | $282,884 | $19,833 | $18,495 | $16,505 | 46 | $16,505 | $17,973 | $19,277 |
| 2020 | $281,546 | $8,617 | $21,903 | $17,006 | 39 | — | $7,126 | $16,605 |
Under IRS private-foundation payout rules, Mark a and Deborah a Wilhelm Foundation reported a distributable amount of $18K for 2024 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated October 2026.
Mission & Focus Areas
No mission statement for the foundation is provided. Its 2024 grants went to charitable organizations, including Boys Hope Girls Hope, whose stated mission is to guide young people in need through residential and academy programs; United Way of Greater St. Louis, which says it mobilizes the community to help people live their best possible lives; and Forest Park Forever, which says it works with the City of St. Louis to restore, maintain, and sustain Forest Park.
Other 2024 grantees described in their own missions include Detroit Red Wings Alumni, which says it uses hockey to unite people and raise funds for those in need; Marian Middle School, which says it supports adolescent girls’ development and college readiness; and St. Louis Arc, which says it serves people with intellectual and developmental disabilities and their families.
Grantmaking
In 2024, the foundation reported 24 grants totaling $302,209. Grants ranged from $100 to $284,975, with a median grant of $250. Its largest listed grants were $284,975 to Raymond James Charitable in St. Petersburg, Florida; $8,086 to Boys Hope Girls Hope in St. Louis, Missouri; and $2,500 to the Annual Diocesan Appeal through the Catholic Community Foundation in Richmond, Virginia. The filing identifies the purposes of these grants as general.
The 2024 filing says the foundation distributed its assets in complete liquidation and termination. It reports a final distribution of cash, stock, and mutual funds to Raymond James Charitable, with a fair market value of $424,895.09, made on December 30 and 31, 2024.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Mark A Wilhelm and Deborah A Wilhelm as trustees.
Mark a and Deborah a Wilhelm Foundation's 2024 filing lists 2 officers; none of the 2 officers listed in 2024 report compensation.
Officers on the 2024 filing
Deborah A. Wilhelm
Trustee
On filings since 2020
No compensation reported
Mark A. Wilhelm
Trustee
On filings since 2020
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 Mark a and Deborah a Wilhelm Foundation
How much does Mark a and Deborah a Wilhelm Foundation give each year?
Mark a and Deborah a Wilhelm Foundation gave $302K across 24 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $16K across 28 grants.
What is Mark a and Deborah a Wilhelm Foundation's typical grant size?
Mark a and Deborah a Wilhelm Foundation's median grant in 2024 was $250, and its average grant was $12,592, across 24 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from Mark a and Deborah a Wilhelm Foundation that year got $36K on average.
Where does Mark a and Deborah a Wilhelm Foundation give grants?
Mark a and Deborah a Wilhelm Foundation gives mostly in Florida: 94% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The most frequent recipient cities were St. Louis, MO (14 grants).
Does Mark a and Deborah a Wilhelm Foundation give general operating support?
Yes: 100% of Mark a and Deborah a Wilhelm Foundation's 2024 grants with a stated purpose (24 of 24) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are Mark a and Deborah a Wilhelm Foundation's largest grantees?
Mark a and Deborah a Wilhelm Foundation's largest 2024 grantees include Raymond James Charitable ($284,975), Boys Hope Girls Hope ($8,086) and Annual Diocesan Appeal Co the Catholic Community Foundation ($2,500), according to its 2024 IRS Form 990-PF. Together they received 98% of its itemized 2024 grant dollars.
What does Mark a and Deborah a Wilhelm Foundation fund?
No mission statement for the foundation is provided. Its 2024 grants went to charitable organizations, including Boys Hope Girls Hope, whose stated mission is to guide young people in need through residential and academy programs; United Way of Greater St. See mission & focus areas ↑
How do I apply for a grant from Mark a and Deborah a Wilhelm Foundation?
The foundation does not accept unsolicited requests. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
How much is Mark a and Deborah a Wilhelm Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2024, Mark a and Deborah a Wilhelm Foundation reported a distributable amount of $18K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Mark a and Deborah a Wilhelm Foundation's EIN?
Mark a and Deborah a Wilhelm Foundation's EIN (Employer Identification Number) is 43-6801024. IRS Form 990 filing data is available on this page for 2020–2024.
Does Mark a and Deborah a Wilhelm Foundation 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 October 2026.
Data update history
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS November 15, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 11, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS October 23, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 14, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 13, 2025)
- IRS filings on file for fiscal years 2020–2024
Live grants for the work Mark a and Deborah a Wilhelm Foundation funds
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Figures come from Mark a and Deborah a Wilhelm Foundation'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.
Mark a and Deborah a Wilhelm Foundation down — hundreds of funders to go?