Koss Foundation Inc
Historical FunderMilwaukee, Wisconsin · EIN 39-1098935 · Private foundation
Half of its grants to organizations were between $1,000 and $2,500.
How to apply
The foundation filed the following application information (Form 990-PF Part XV, tax year 2025):
| Contact | MICHAEL J KOSS |
|---|---|
| Address | 4129 N PORT WASHINGTON ROAD, MILWAUKEE WI 53212 |
| Phone | 4149645000 |
| MJKOSS@KOSS.COM | |
| Form and materials | NO SPECIFIED FORM-LETTER SOLICITATIONS |
| Deadlines | NONE |
| Restrictions | NONE OTHER THAN 501(C)(3) ENTITIES |
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
60% of grants went outside Wisconsin.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Junior Achievement of Wi | Milwaukee, WI | General operations | $20,000 |
| Crohns & Colitis Foundation | New York, NY | General operations | $2,500 |
| Milwaukee Symphony Orchestra | Milwaukee, WI | General operations | $1,000 |
| Colonial Williamsburg Foundation | Williamsburg, VA | General operations | $1,000 |
| Cru | Orlando, FL | General operations | $500 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $25,000 | 5 |
| 2024 | $33,000 | 8 |
| 2023 | $33,500 | 10 |
Sources
- IRS Form 990-PF, tax year 2025, filed Jul 23, 2026 - IRS e-file batch, object ID 202602049349100305
- IRS Tax Exempt Organization Search for EIN 39-1098935
- Profile updated Nov 6, 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.