Foundation profile
Mark a and Deborah a Wilhelm Foundation
Private foundation · Naples, FL · www.guidestar.org
Invitation only
Grants (last 3 years)
24
Total given (last 3 years)
$302k
Median grant
$250
Range
$100 – $285k
Giving by year
Total grants paid per tax year, as reported to the IRS.
Where the money goes
Causes
Public foundation · 97%Boys and girls club · 3%Federated giving program · 0%Environmental beautification · 0%Disability services · 0%
States
FloridaMissouriVirginiaMichiganDistrict of Columbia
How to apply, full grant list and leadership
Contacts, deadlines, restrictions, openness to new grantees and every grant this foundation made.
Start free trial Log inFree for 7 days, then $69/month. Cancel anytime before October 12, 2026 and you won't be charged.
Source: IRS Form 990-PF / 990 Schedule I filings. Not affiliated with the IRS. About the data