Nonprofit · EIN 26-3873872
RALPH & MARSHA GUGGENHEIM FAMILY FOUNDATION
Tax-exempt · SAN FRANCISCO, CA 94116
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $175,463 | $164,866 | $10,597 | $215,656 | $18,862 | $196,794 |
| December 31, 2024 | 990-PF | $156,108 | $157,371 | -$1,263 | $197,043 | $0 | $197,043 |
| December 31, 2023 | 990-PF | $158,416 | $149,739 | $8,677 | $188,753 | $0 | $188,753 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $169,000
- Interest
- $1,355
- Net gain from sales of assets
- $5,108
Expenses
- Grants and similar amounts paid
- $158,223
- Disbursements for charitable purposes
- $161,857
- Excise tax on investment income
- $1,215
Balance sheet and other
- Total assets, start of year
- $197,043
- Total assets, end of year
- $215,656
- Total liabilities, end of year
- $18,862
- Net assets, end of year
- $196,794
- Fair market value of assets
- $215,656
- Qualifying distributions
- $161,857
- Net investment income
- $87,508
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 |
|---|---|---|---|
| Marsha M Guggenheim 141 Alton Avenue, San Francisco, CA 94116 | President | 1 | $0 |
| Ralph J Guggenheim 141 Alton Avenue, San Franicsco, CA 94116 | Secretary/Treas | 1 | $0 |
990-PF for the year ended December 31, 2024: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Marsha M Guggenheim 141 Alton Avenue, San Francisco, CA 94116 | President | 1 | $0 |
| Ralph J Guggenheim 141 Alton Avenue, San Franicsco, CA 94116 | Secretary/Treas | 1 | $0 |
990-PF for the year ended December 31, 2023: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Marsha M Guggenheim 141 Alton Avenue, San Francisco, CA 94116 | President | 1 | $0 |
| Ralph J Guggenheim 141 Alton Avenue, San Franicsco, CA 94116 | Secretary/Treas | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 141 ALTON AVE, SAN FRANCISCO, CA 94116-1404
- In care of
- % MARSHA M GUGGENHEIM
- Signed the 990-PF
- Marsha M Guggenheim, President
- Phone
- (415) 759-0760
- Return prepared by
- Fontanello Duffield & Otake LLP
California records
California keeps its own records of charities and corporations. Search them by EIN 26-3873872 or by the name RALPH & MARSHA GUGGENHEIM FAMILY 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
- 26-3873872
- 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
- 2010
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T21)
- Assets (IRS master file)
- $215,656
- Income (IRS master file)
- $256,545
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $175,463 | $164,866 | $215,656 | XML |
| 990-PF | December 2024 | $156,108 | $157,371 | $197,043 | IRS |
| 990-PF | December 2023 | $158,416 | $149,739 | $188,753 | 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 26-3873872).
Questions about RALPH & MARSHA GUGGENHEIM FAMILY FOUNDATION
- What is the EIN of RALPH & MARSHA GUGGENHEIM FAMILY FOUNDATION?
- The employer identification number (EIN) of RALPH & MARSHA GUGGENHEIM FAMILY FOUNDATION is 26-3873872.
- Is RALPH & MARSHA GUGGENHEIM FAMILY FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2010.
- Are donations to RALPH & MARSHA GUGGENHEIM FAMILY FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does RALPH & MARSHA GUGGENHEIM FAMILY FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of RALPH & MARSHA GUGGENHEIM FAMILY 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 RALPH & MARSHA GUGGENHEIM FAMILY 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 RALPH & MARSHA GUGGENHEIM FAMILY FOUNDATION?
- The 990-PF for the year ended December 31, 2025 lists 2 people; 0 received compensation from the organization.
- How much revenue does RALPH & MARSHA GUGGENHEIM FAMILY FOUNDATION have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $175,463, expenses of $164,866 and total assets of $215,656 at year end.
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