Koss Foundation Inc
Koss Foundation Inc is a private foundation, based in Milwaukee, WI. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $711K in total assets. In 2025, it awarded 5 grants totaling $25K. Net investment income was $59.
Koss Foundation Inc at a glance
In short: Koss Foundation Inc gave $25K across 5 grants in 2025 (avg $5K), mostly in Wisconsin. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $25,000
- -24.2% vs 2024
- Grants made (2025)
- 5
- -37.5% vs 2024
- Average grant
- $5,000
- +21.2% vs 2024
- Median grant
- $1,000
- Total assets
- $711,227
- -3.6% vs 2024
- Primary geography
- Wisconsin (84% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Koss Foundation Inc funds
How this funder distributes its grants
Top Recipients
Top 5 recipients in 2025
The largest 2025 recipient was Junior Achievement of WI ($20K). Together the top 5 received $25K.
Grant Size Distribution
25 grants across all recorded years
The most common grant size was under $50K: 25 grants of 25 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 5 itemized grants.
Cities
How Koss Foundation Inc gives
- In 2025 it paid out 40% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $9K (2021) to $34K (2023). In 2025 it made 5 grants totaling $25K.
Grants by year
Grant recipients and amounts by year
| Recipient | 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 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $711,227 | $59 | $26,764 | $25,000 | 5 | $25,000 | $59 | $62,818 |
| 2024 | $737,932 | $6,063 | $35,199 | $33,000 | 8 | $33,000 | $6,063 | $63,399 |
| 2023 | $767,068 | $302 | $36,552 | $33,500 | 10 | $33,500 | $302 | $51,777 |
| 2021 | $778,747 | $16 | $10,076 | $9,000 | 1 | — | $115,739 | $240,108 |
| 2020 | $673,083 | $10,010 | $25,058 | $24,000 | 1 | — | $10 | $21,715 |
Under IRS private-foundation payout rules, Koss Foundation Inc reported a distributable amount of $63K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Koss Foundation Inc is led by Michael J. Koss, President, Secretary & Treasurer since 2021 (on filings since 2020); none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Michael J. Koss
President, Secretary & Treasurer
Secry & Treasurer → President, Secretary & Treasurer, 2021
On filings since 2020
0.5 hrs/week
No compensation reported
John C. Koss Jr.
Officer
President & Director → Officer, 2023
On filings since 2020
0.5 hrs/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 Koss Foundation Inc
How much does Koss Foundation Inc give each year?
Koss Foundation Inc gave $25K across 5 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $33K across 8 grants.
What is Koss Foundation Inc's typical grant size?
Koss Foundation Inc's median grant in 2025 was $1,000, and its average grant was $5,000, across 5 grants on its 2025 IRS Form 990-PF.
Where does Koss Foundation Inc give grants?
Koss Foundation Inc gives mostly in Wisconsin: 84% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was New York (10%). The most frequent recipient cities were Milwaukee, WI (2 grants).
Does Koss Foundation Inc give general operating support?
Yes: 100% of Koss Foundation Inc's 2025 grants with a stated purpose (5 of 5) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Koss Foundation Inc's largest grantees?
Koss Foundation Inc's largest 2025 grantees include Junior Achievement of WI ($20,000), Crohns & Colitis Foundation ($2,500) and Milwaukee Symphony Orchestra ($1,000), according to its 2025 IRS Form 990-PF. Together they received 94% of its itemized 2025 grant dollars.
How large is Koss Foundation Inc?
Koss Foundation Inc reported $711K in total assets on its 2025 IRS Form 990-PF. It paid out $25K in qualifying distributions that year, against a required minimum of $63K (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 is Koss Foundation Inc's EIN?
Koss Foundation Inc's EIN (Employer Identification Number) is 39-1098935. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
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 August 17, 2021)
- Added Form 990-PF for fiscal year 2021 (received by the IRS May 3, 2022)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS August 26, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 12, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS July 23, 2026)
- IRS filings on file for fiscal years 2020–2024
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