William a Siekman Foundation
Historical FunderChicago, Illinois · EIN 39-6539731 · Private foundation
Half of its grants to organizations were between $2,000 and $7,500.
How to apply
The foundation filed the following application information (Form 990-PF Part XV, tax year 2025):
| Contact | CO BMO HARRIS BANK N A |
|---|---|
| Address | 221 W COLLEGE AVE, APPLETON WI 54912 |
| Phone | 9207383827 |
| Form and materials | WRITTEN FORM |
| Deadlines | NONE |
| Restrictions | NONE |
Copied as filed. Deadlines on a tax return describe the foundation's usual process; they are not confirmation of a current open cycle.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
100% of grants went outside Illinois.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| The Appleton Cemetery Association | Appleton, WI | General operating purposes | $15,000 |
| Hope Clinic & Care Center | Appleton, WI | General operating purposes | $15,000 |
| Plymouth Congregational Church | Racine, WI | General operating purposes | $10,000 |
| Amigo Club of Ashland Oregon Inc | Ashland, OR | General operating purposes | $10,000 |
| Hillsdale College | Hillsdale, MI | General operating purposes | $8,500 |
| Lawrence University | Appleton, WI | General operating purposes | $8,000 |
| Smu-Dedman School of Law | Dallas, TX | Program support | $7,500 |
| Appleton Alliance Church | Appleton, WI | General operating purposes | $6,000 |
| Salvation Army of the Fox Cities | Appleton, WI | General operating purposes | $5,588 |
| Beaming Incorporated | Neenah, WI | General operating purposes | $5,000 |
| Thedacare Cancer Center | Appleton, WI | General operating purposes | $5,000 |
| YMCA of the Fox Cities | Appleton, WI | General operating purposes | $3,500 |
| Acts 18 Ministry | Green Bay, WI | General operating purposes | $3,000 |
| The Appleton Historical Society | Appleton, WI | General operatiing purposes | $2,500 |
| Outagamie County Historical Society | Appleton, WI | General operating purposes | $2,000 |
| Leaven | Menasha, WI | General operating purposes | $2,000 |
| Boys & Girls Club of the Fox Valley | Appleton, WI | Program support | $2,000 |
| Attic Theatre | Appleton, WI | General operating purposes | $2,000 |
| Memorial Presbyterian Church | Appleton, WI | General operating purposes | $2,000 |
| Dyslexia Reading Connection | Appleton, WI | General operating purposes | $2,000 |
| Curative Connections | Green Bay, WI | General operating purposes | $1,500 |
| Cots - Community Outreach Temporary Serv | Appleton, WI | General operating purposes | $1,500 |
| Community Church of Appleton | Appleton, WI | Program support | $1,000 |
| Bubolz Nature Center | Appleton, WI | General operating purposes | $1,000 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $121,588 | 24 |
| 2024 | $109,510 | 24 |
| 2023 | $114,570 | 25 |
Sources
- IRS Form 990-PF, tax year 2025, filed Apr 27, 2026 - IRS e-file batch, object ID 202631179349101303
- IRS Tax Exempt Organization Search for EIN 39-6539731
- Profile updated Nov 5, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.