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The Stone Research Foundation for Sports Medicine and Arthritis

EIN 94-3228007 · San Francisco, CA

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthGood73 out of 100GovernanceGood72 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

To advance both scientific and educational enrichment of sports medicine and arthritis and to disseminate the results of analytical and scientific studies.

Income
$1.2 million
Spending
$1.6 million
Spent on programs
73%
Reserves
7.8 months of spending
Largest source of income
donations and private grants, 91%
Employees
7
Highest pay
$250,000, chairman

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

Good: 73 out of 100. Higher than 35% of charities in its peer group (medical research, $1m to $10m).

  • Reserves

    28 of 35

    Spendable reserves would cover 7.8 months of spending.

  • Debt

    20 of 20

    It owes 10% of what it owns.

  • Living within its means

    0 of 15

    Spending exceeded income by 34% of income.

  • Income trend

    10 of 15

    Income fell 8% on the year before.

  • Spending floor

    15 of 15

    73% of spending went to programs and raising each dollar of donations cost 28 cents.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

Good: 72 out of 100. Higher than 22% of charities in its peer group (medical research, $1m to $10m).

  • Independent board

    25 of 25

    4 of 5 voting board members are independent.

  • Conflict of interest policy

    15 of 15

    Has a written conflict of interest policy.

  • Whistleblower policy

    0 of 8

    Reports no written whistleblower policy.

  • Record keeping policy

    7 of 7

    Has a written policy on keeping and destroying records.

  • Board minutes

    5 of 5

    Keeps minutes of board meetings.

  • Board sees the tax return

    10 of 10

    Gave the board a copy of this return before filing it.

  • Pay set independently

    0 of 5

    Reports no independent review process for its chief executive's pay.

  • Independent check of accounts

    0 of 15

    Its accounts were not audited or reviewed by an independent accountant.

  • No reported misuse

    10 of 10

    Reports no diversion of assets, excess benefits or loans to insiders.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Impact evidence

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (1)
  1. $1.2 million spent. Successes: For over a decade the Foundation has helped to bring regenerative joint repair solutions directly to patients. Our research focuses on analyzing leading-edge biologic techniques that stimulate the body's ability to heal itself. In the past, artificial joint replacement was the primary option for treating debilitating joint disease. Today, patients have the option of regenerative repair which is less invasive, allows for faster healing and restores biologic joint services. Biologic joint services are superior to metal and plastics because they feel more natural in the body and allow for activity levels not possible with artificial joint replacement. Outcome studies and preclinical research conducted by the Foundation support treatments that return patients to healthier, more active, and more productive lives than was previously possible.Education: Physicians and other medical professionals learn leading-edge treatments emanating from the research performed. Worldwide publications and presentations proliferate those results.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. Is it registered with the IRS? Passed.

    Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  2. Has the IRS revoked its tax-exempt status? Passed.

    Not on the IRS automatic revocation list.

    Source: Automatic revocation of exemption list, Internal Revenue Service, file dated November 6, 2026.

  3. Are donations tax-deductible? Passed.

    On the IRS list of organizations eligible to receive tax-deductible contributions.

    Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated October 13, 2026.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending December 2025.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since January 1997.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  6. Is it in good standing with state regulators? Passed.

    Not on California's list of charities barred from soliciting. Other states are not yet checked.

    Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated November 4, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.