The California State Capitol

Form 990-PFTax year 2024EIN 94-3170349

The Endurance Fund

A private foundation in Nicasio, CA. Its return for tax year 2024 lists 49 grants and $6.2 million paid in grants.

Tax year 2024 (period ending Dec 31, 2024), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Accepts applications

The return gives an application contact and rules, as below.

Contact
Robert G Schiro
1749 Nicasio Valley Road
Nicasio, CA 94946
(415) 488-4311
Form and materials
The Foundation does not have an application form, but requires details of the purpose of the grant and verification of the tax-exempt status of donees.
Deadlines
There are no submission deadlines
Restrictions
There are no restrictions or limitations on awards such as by geographical areas, charitable fields, kinds of institutions or other factors.

Assets and giving by year

7 returns on file
Grants paid by tax year. The latest year is in blue.
  • Tax year 2024

    $6,242,328

    Grants listed
    49
    Assets, end of year
    $0
  • Tax year 2023

    $260,266

    Grants listed
    31
    Assets, end of year
    $6,041,379
  • Tax year 2022

    $384,139

    Grants listed
    44
    Assets, end of year
    $5,582,028
  • Tax year 2021

    $284,730

    Grants listed
    33
    Assets, end of year
    $7,385,525
  • Tax year 2020

    $197,250

    Grants listed
    11
    Assets, end of year
    $6,719,269
  • Tax year 2019

    $261,674

    Grants listed
    10
    Assets, end of year
    $6,243,037
  • Tax year 2018

    $289,302

    Grants listed
    40
    Assets, end of year
    $6,129,860

Grants paid in 2024

49 grants, largest first

As listed on the return. Grants to individuals show as “Individual”, with purpose and amount only.

  1. Marin Community FoundationNovato, CA

    The Reliance Fund

    $3,335,743
  2. Vanguard Charitable ProgramWarwick, RI

    General Support

    $2,631,590
  3. Vanguard Charitable ProgramSoutheastern, PA

    The Granite Fund

    $50,000
  4. Vanguard Charitable ProgramWarwick, RI

    The Meili Fund

    $50,000
  5. Individual

    Council Dinner

    $26,091
  6. Vanguard Charitable ProgramWarwick, RI

    Facilitation of grant making

    $25,000
  7. Individual

    Job Training

    $18,900
  8. Individual

    Job Training

    $16,100
  9. Kingswood-Oxford SchoolWest Hartford, CT

    Annual Fund

    $10,000
  10. Individual

    #comprehensivesexed

    $10,000
  11. Individual

    Vast

    $7,100
  12. Individual

    Vast

    $6,225
  13. LEAP Lagunitas School SaversSan Geronimo, CA

    General Support

    $5,000
  14. Marin Agricultural Land TrustPoint Reyes Station, CA

    General Support - Stewardship

    $5,000
  15. San Geronimo Valley Emergency FundSan Geronimo, CA

    General Support

    $5,000
  16. Marin Country Day SchoolCorte Madera, CA

    Annual Fund

    $5,000
  17. Branson SchoolRoss, CA

    Annual Fund

    $5,000
  18. Pomona CollegeClaremont, CA

    Annual Fund

    $5,000
  19. Individual

    Endowment Fund

    $4,000
  20. KqedSan Francisco, CA

    General Suppport

    $2,000
  21. Osher Marin Jewish Community CenterSan Rafael, CA

    General Support

    $2,000
  22. St Helena Endowment TrustSt Helena, CA

    General Support

    $1,550
  23. Dominican University of CaliforniaSan Rafael, CA

    Athletics Program

    $1,500
  24. St Helena Endowment TrustSt Helena, CA

    General Support

    $1,500
  25. VivalonSan Rafael, CA

    General Support

    $1,070
  26. Friends of the Library FairfaxSan Rafael, CA

    General Support

    $1,039
  27. Redwood Empire Food BankSanta Rosa, CA

    General Support

    $1,000
  28. West Marin Senior ServicesPT Reyes Sta, CA

    General Support

    $1,000
  29. Mountain Play AssociationSan Rafael, CA

    General Support

    $1,000
  30. EarthJusticeSan Francisco, CA

    General Support

    $1,000
  31. EarthJusticeSan Francisco, CA

    General Support

    $1,000
  32. SFMarin Food BankSan Francisco, CA

    General Support

    $1,000
  33. Nicasio Volunteer Fire DeptNicasio, CA

    General Support

    $500
  34. Individual

    General Support

    $500
  35. Ross Valley PlayersRoss, CA

    General Support

    $500
  36. Pacific Forest TrustSan Francisco, CA

    General Support & Watershed Project

    $500
  37. Individual

    Woodacre Park

    $500
  38. Marin SymphonySan Rafael, CA

    General Support

    $500
  39. Individual

    General Support

    $500
  40. Individual

    General Support

    $250
  41. Barrington Stage CompanyPittsfield, MA

    General Support

    $250
  42. Individual

    General Support

    $250
  43. Nicasio Historical SocietyNicasio, CA

    General Support

    $200
  44. Nicasio Land PreserveNicasio, CA

    General Support

    $150
  45. Berkshire Theatre GroupPittsfield, MA

    General Support

    $100
  46. Maine Rockweed CoalitionPembroke, ME

    Rockweed Forest Book

    $100
  47. Signal FoundationHarrison, NY

    General Support

    $50
  48. Signal FoundationHarrison, NY

    General Support

    $50
  49. Signal FoundationHarrison, NY

    General Support

    $20

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Philanthropy and grantmaking4 grants $3,335,86399% of the total
  2. Education6 grants $26,750<1% of the total
  3. Human services3 grants $7,070<1% of the total
  4. Food and agriculture2 grants $6,000<1% of the total
  5. Arts and culture5 grants $3,800<1% of the total
  6. Environment4 grants $2,250<1% of the total
  7. 1 other causes1 grant $500<1% of the total

By State

Grants to organizations with a US address, latest year.

  1. California26 grants $3,384,752
  2. Rhode Island3 grants $2,706,590
  3. Pennsylvania1 grant $50,000
  4. Connecticut1 grant $10,000
  5. Massachusetts2 grants $350
  6. New York3 grants $120
  7. Maine1 grant $100

Officers, directors and trustees

2 people as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Robert G SchiroTrustee Hours 10Pay $0
  • Dorene C SchiroTrustee Hours 20Pay $0

The return

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