Mission
To advance both scientific and educational enrichment of sports medicine and arthritis and to disseminate the results of analytical and scientific studies.
Public Charity
The Stone Research Foundation for Sports Medicine and Arthritis
The Stone Research Foundation for Sports Medicine and Arthritis, of San Francisco, CA, is a Public Charity tracked in Imperigo's IRS 990 database. The 2025 filing shows $1.2M in revenue, $1.6M in expenses, $1.1M in total assets. 30 publicly reported grants to this organization, totaling roughly $1.7M, appear in IRS filings.
EIN: 943228007
San Francisco, CA
Arthritis Research
NTEE: H51
Latest filing: 2025
Total Revenue$1.2M
Total Expenses$1.6M
Total Assets$1.1M
Grant Records30
Funding Total$1.7M
Filing Years2021–2025
Where $100 goes at The Stone Research Foundation for Sports Medicine and Arthritis
How The Stone Research Foundation for Sports Medicine and Arthritis divides every $100 it spends, from its own Form 990 filings, averaged across 8 years.
$74
Programs
the work itself
$11
Management
running the organization
$15
Fundraising
raising the next dollar
Inside the $74 for programs
$74
Successes
Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.
Sample Grants Received
For grant recipient's exempt purposes
$228,125
HEALTH
$200,000
$25,000
PROVIDE GENERAL OPERATING SUPPORT
$25,000
For grant recipient's exempt purposes
$146,100
Showing up to 5 of 30 total records — full history available with membership.
Officers & Directors
Director
Greg Widroe
Director
Jennifer Brinkley
Chairman
Kevin R Stone Md
Dir Research & Ops
Mani Vessal
Director
Mark Bailey
Research Prgm Mgr
Simaron Dhillon
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $1.2M | $1.6M | $1.1M |
| 2024 | $1.3M | $1.6M | $1.5M |
| 2023 | $1.5M | $1.5M | $1.8M |
| 2022 | $1.8M | $914K | $1.7M |
| 2021 | $846K | $556K | $807K |
Between 2021 and 2025, reported annual revenue grew from $846K to $1.2M (+39%), with total assets most recently reported at $1.1M.
Interactive year-over-year charts and full filing details available with membership.