The California State Capitol

Form 990-PFTax year 2025EIN 86-3818045

Bostwick-Osterhout Foundation

A private foundation in San Diego, CA. Its return for tax year 2025 lists 8 grants and $31,000 paid in grants.

Tax year 2025 (period ending Dec 31, 2025), 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

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

5 returns on file
Grants paid by tax year. The latest year is in blue.
  • Tax year 2025

    $31,000

    Grants listed
    8
    Assets, end of year
    $653,925
  • Tax year 2024

    $17,000

    Grants listed
    4
    Assets, end of year
    $596,343
  • Tax year 2023

    $17,000

    Grants listed
    4
    Assets, end of year
    $378,440
  • Tax year 2022

    $13,000

    Grants listed
    5
    Assets, end of year
    $369,810
  • Tax year 2021

    $7,000

    Grants listed
    2
    Assets, end of year
    $367,900

Grants paid in 2025

8 grants, largest first

As listed on the return.

  1. GivedirectlyNew York, NY

    General purpose donation

    $10,000
  2. San Diego Food BankSan Diego, CA

    General purpose donation

    $10,000
  3. Surfrider FoundationSan Clemente, CA

    General purpose donation

    $3,000
  4. Young Center for Immigrant RightsChicago, IL

    General purpose donation

    $3,000
  5. Electronic Frontier FoundationSan Francisco, CA

    General purpose donation

    $2,000
  6. Collins Arts and Sports FoundationSan Diego, CA

    General purpose donationgeneral purpose donati

    $1,000
  7. Burrito BoyzCarlsbad, CA

    General purpose donation

    $1,000
  8. Pennisula Tennis ClubSan Diego, CA

    General purpose donation

    $1,000

Where the money goes

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

  1. Human services1 grant $10,00077% of the total
  2. Environment1 grant $3,00023% of the total

By State

Grants to organizations with a US address, latest year.

  1. California6 grants $18,000
  2. New York1 grant $10,000
  3. Illinois1 grant $3,000

Officers, directors and trustees

3 people as filed

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

  • Benjamin J BostwickCEO Hours 1Pay $0
  • Robin OsterhoutSECRETARY/TREASURER Hours 1Pay $0
  • Mary BostwickBOARD MEMBER Hours 1Pay $0

The return

More foundations

Similar foundations

Same main cause (human services), giving between a quarter and four times this foundation’s where possible, nearby first.

  1. Mark and Karla Stuart FoundationSan Diego, CA 22 grants Preselected only $30,590 giving
  2. Nutritional Research FoundationSan Diego, CA 6 grants Preselected only $29,000 giving
  3. Cumming 2000 Charitable TrustSan Diego, CA 6 grants Preselected only $20,000 giving
  4. The Gregg Family Charitable Foundation IncSan Diego, CA 14 grants Accepts applications $75,993 giving
  5. Claude A and Johann S PettySan Diego, CA 6 grants Preselected only $82,500 giving