Nonprofit · EIN 94-6089512
A P GIANNINI FOUNDATION
Tax-exempt · SAN RAFAEL, CA 94903
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $1,962,724 | $1,904,488 | $58,236 | $30,001,895 | $1,260,000 | $28,741,895 |
| December 31, 2024 | 990-PF | $1,328,839 | $1,750,729 | -$421,890 | $28,065,913 | $1,294,000 | $26,771,913 |
| December 31, 2023 | 990-PF | $1,375,199 | $1,634,730 | -$259,531 | $26,484,221 | $1,250,000 | $25,234,221 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $168,165
- Dividends
- $725,664
- Interest
- $175,457
- Net gain from sales of assets
- $812,484
- Other income
- $80,954
Expenses
- Grants and similar amounts paid
- $1,209,000
- Compensation of officers, directors and key employees
- $0
- Disbursements for charitable purposes
- $1,736,519
- Excise tax on investment income
- $21,308
Balance sheet and other
- Total assets, start of year
- $28,065,913
- Total assets, end of year
- $30,001,895
- Total liabilities, end of year
- $1,260,000
- Net assets, end of year
- $28,741,895
- Fair market value of assets
- $30,001,895
- Qualifying distributions
- $1,736,519
- Net investment income
- $1,713,605
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990-PF for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| MIKE MANTLE PO BOX 6106, SAN RAFAEL, CA 94903 | TREASURER | 0 | $0 |
| VIRGINIA HAMMERNESS PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR - (DEC'D 05/31/25) | 0 | $0 |
| MARK C PERRY PO BOX 6106, SAN RAFAEL, CA 94903 | CHAIRMAN | 0 | $0 |
| BRUCE U WINTROUB MD PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| KEITH GROSSMAN PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| JACK L MEYERS PO BOX 6106, SAN RAFAEL, CA 94903 | VICE-CHAIRMAN | 0 | $0 |
| ANNE MCWILLIAMS PO BOX 6106, SAN RAFAEL, CA 94903 | EMERITUS TRUSTEE | 0 | $0 |
| KEITH MCWILLIAMS PO BOX 6106, SAN RAFAEL, CA 94903 | SECRETARY | 0 | $0 |
| MARK CHAOMDPHD PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
990-PF for the year ended December 31, 2024: 12 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| CAROLINE O BOITANO PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| MIKE MANTLE PO BOX 6106, SAN RAFAEL, CA 94903 | TREASURER | 0 | $0 |
| VIRGINIA HAMMERNESS PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| MARK C PERRY PO BOX 6106, SAN RAFAEL, CA 94903 | CHAIRMAN | 0 | $0 |
| BRUCE U WINTROUB MD PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| KEITH GROSSMAN PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| JACK L MEYERS PO BOX 6106, SAN RAFAEL, CA 94903 | VICE-CHAIRMAN | 0 | $0 |
| JOHN A RONCA PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| ANNE MCWILLIAMS PO BOX 6106, SAN RAFAEL, CA 94903 | EMERITUS TRUSTEE | 0 | $0 |
| KEITH MCWILLIAMS PO BOX 6106, SAN RAFAEL, CA 94903 | SECRETARY | 0 | $0 |
| SALLY GEIER PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| MARK CHAOMDPHD PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
990-PF for the year ended December 31, 2023: 12 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| CAROLINE O BOITANO PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| MIKE MANTLE PO BOX 6106, SAN RAFAEL, CA 94903 | TREASURER | 0 | $0 |
| VIRGINIA HAMMERNESS PO BOX 6106, SAN RAFAEL, CA 94903 | VICE-CHAIRMAN | 0 | $0 |
| MARK C PERRY PO BOX 6106, SAN RAFAEL, CA 94903 | CHAIRMAN | 0 | $0 |
| BRUCE U WINTROUB MD PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| KEITH GROSSMAN PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| JACK L MEYERS PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| JOHN RONCO JR PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| ANNE MCWILLIAMS PO BOX 6106, SAN RAFAEL, CA 94903 | EMERITUS TRUSTEE | 0 | $0 |
| KEITH MCWILLIAMS PO BOX 6106, SAN RAFAEL, CA 94903 | SECRETARY | 0 | $0 |
| SALLY GEIER PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
| MARK CHAOMDPHD PO BOX 6106, SAN RAFAEL, CA 94903 | DIRECTOR | 0 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 6106, SAN RAFAEL, CA 94903-0106
- Signed the 990-PF
- KEITH MCWILLIAMS, SECRETARY
- Phone
- (415) 981-2966
- Website
- WWW.APGIANNINIFOUNDATION.ORG
- Return prepared by
- CALEGARI & MORRIS ACCOUNTANTS
California records
California keeps its own records of charities and corporations. Search them by EIN 94-6089512 or by the name A P GIANNINI FOUNDATION.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
What it must file and when
IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-PF on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-PF on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-PF on file |
IRS record
- EIN
- 94-6089512
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private non-operating foundation
- Donations deductible (Pub 78)
- Private foundation, 30% limit
- Exempt since
- 1949
- Accounting year ends
- December
- Files
- Form 990-PF
- Assets (IRS master file)
- $30,001,895
- Income (IRS master file)
- $6,864,383
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $1,962,724 | $1,904,488 | $30,001,895 | XML |
| 990-PF | December 2024 | $1,328,839 | $1,750,729 | $28,065,913 | XML |
| 990-PF | December 2023 | $1,375,199 | $1,634,730 | $26,484,221 | XML |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | IRS |
| 990-PF | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 94-6089512).
Questions about A P GIANNINI FOUNDATION
- What is the EIN of A P GIANNINI FOUNDATION?
- The employer identification number (EIN) of A P GIANNINI FOUNDATION is 94-6089512.
- Is A P GIANNINI FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1949.
- Are donations to A P GIANNINI FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does A P GIANNINI FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of A P GIANNINI FOUNDATION due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did A P GIANNINI FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended December 2025.
- Who are the officers and directors of A P GIANNINI FOUNDATION?
- The 990-PF for the year ended December 31, 2025 lists 9 people; 0 received compensation from the organization.
- How much revenue does A P GIANNINI FOUNDATION have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $1,962,724, expenses of $1,904,488 and total assets of $30,001,895 at year end.
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