The Knee Society
The Knee Society operates to promote outstanding care to patients with knee disorders through innovative research and education.
The Knee Society at a glance
- Total assets
- $6,889,256
- +17.7% vs 2024
- Revenue (2025)
- $2,776,072
- +12.0% vs 2024
- Net investment income (2025)
- $141,083
- -38.2% vs 2024
- Expenses (2025)
- $2,573,911
- +21.5% vs 2024
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated October 2026.
Who The Knee Society funds
How this funder distributes its grants
Grant Size Distribution
4 grants across all recorded years
The most common grant size was under $50K: 4 grants of 4 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2024, annual grant giving ranged from $1K (2020) to $50K (2021). In 2024 it reported $4K in grants paid, as a total without an itemized list.
Hatched bars: grants paid as reported on the IRS filing, which lists no individual grants for that year.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| NYU Grossman School of Medicine Boston, MA | Research | $20,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $6,889,256 | $2,776,072 | $2,573,911 | — | — | $141,083 |
| 2024 | $5,852,254 | $2,478,874 | $2,118,181 | $3,968 | Total only | $228,228 |
| 2023 | $5,164,946 | $1,844,196 | $1,855,628 | $20,000 | 1 | $59,954 |
| 2022 | $4,857,007 | $2,113,472 | $1,978,838 | $38,333 | 1 | $43,635 |
| 2021 | $4,620,112 | $1,876,790 | $1,738,650 | $50,000 | 2 | $47,069 |
| 2020 | $3,970,330 | $1,117,754 | $836,821 | $1,000 | Total only | $49,851 |
"Total only": grants paid as reported on the IRS filing, which lists no individual grants for that year.
About The Knee Society
Based on IRS filings
The Knee Society is a public charity, based in Schaumburg, IL. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $6.9M in total assets. Net investment income was $141K.
Leadership & Key People
Officers and directors from IRS filings
The Knee Society is led by Steven B. Haas MD, President since 2025 (on filings since 2020); none of the 14 officers listed in 2025 report compensation.
Officers on the 2025 filing
Steven B. Haas MD
President
2nd Vice President → 1st Vice President, 2024
1st Vice President → President, 2025
On filings since 2020
1 hr/week
No compensation reported
Olga Foley
Executive Director
On filings since 2024
40 hrs/week
No compensation reported
James I. Huddleston III MD
Committee Chair
Member at Large → Member, 2021
Member → Committee Chair, 2023
On filings since 2020
1 hr/week
No compensation reported
David J. Mayman MD
Committee Chair
On filings since 2024
1 hr/week
No compensation reported
Fred D. Cushner MD
Committee Chair
New on the 2025 filing
1 hr/week
No compensation reported
Craig J. Della Valle MD
1st Vice President
Committee Chair → 2nd Vice President, 2024
2nd Vice President → 1st Vice President, 2025
On filings since 2020
1 hr/week
No compensation reported
Michael A. Mont MD
3rd Vice President
Member → Treasurer, 2022
Treasurer → 3rd Vice President, 2025
On filings since 2020
1 hr/week
No compensation reported
Henry D. Clarke MD
Immediate Past President
1st Vice President → President, 2024
President → Immediate Past President, 2025
On filings since 2021
1 hr/week
No compensation reported
Scott M. Sporer MD
Secretary
Committee Chair → Secretary, 2024
On filings since 2022
1 hr/week
No compensation reported
Jess H. Lonner MD
Member-At-Large
Member → Member-At-Large, 2025
On filings since 2023
1 hr/week
No compensation reported
James A. Browne MD
Member-At-Large
Committee Chair → Member-At-Large, 2025
On filings since 2024
1 hr/week
No compensation reported
Richard Iorio MD
2nd Vice President
3rd Vice President → 2nd Vice President, 2025
On filings since 2024
1 hr/week
No compensation reported
Shuichi Matsuda MD
Ex-Officio Member-At-Large
Member → Ex-Officio Member-At-Large, 2025
On filings since 2024
1 hr/week
No compensation reported
Charles L. Nelson MD
Treasurer
New on the 2025 filing
1 hr/week
No compensation reported
Former officers (13)
- Former: William J. Maloney III MD (2020–2024) — Immediate Past President
- Former: William G. Hamilton MD (2022–2024) — Member
- Former: Gwo-Chin Lee MD (2023–2024) — Committee Chair
- Former: Christopher L. Peters MD (2020–2023) — Immediate Past President
- Former: R. Michael Meneghini MD (2020–2023) — Secretary
- Former: Olga Foley Cae (2021–2023) — Executive Director
- Former: Nicholas J. Giori MD (2022–2023) — Committee Chair
- Former: Robert T. Trousdale MD (2020–2022) — Immediate Past President
- Former: John J. Callaghan MD (2020–2021) — Immediate Past President
- Former: Rafael J. Sierra MD (2020–2021) — Committee Chair
- Former: Douglas Dr Naudie MD (2021) — Committee Chair
- Former: Keith R. Berend MD (2020) — Secretary
- Former: Mark W. Pagnano MD (2020) — Immediate Past President
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 The Knee Society
How large is The Knee Society?
The Knee Society reported $6.9M in total assets on its 2025 IRS Form 990. Its revenue that year was $2.8M.
Where does The Knee Society operate?
The Knee Society has awarded grants in Massachusetts, Pennsylvania.
What is The Knee Society's EIN?
The Knee Society's EIN (Employer Identification Number) is 13-3190169. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated October 2026. Sourced from IRS Form 990 filings.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2021 (received by the IRS November 14, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS September 25, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS August 7, 2024)
- Updated Form 990 for fiscal year 2020 (received by the IRS August 30, 2021)
- Updated Form 990 for fiscal year 2024 (received by the IRS August 5, 2025)
- Added Form 990 for fiscal year 2025 (received by the IRS August 13, 2026)
- IRS filings on file for fiscal years 2020–2024
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