Marineau Family Foundation
Marineau Family Foundation is a private foundation, based in San Francisco, CA. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $784K in total assets. In 2025, it awarded 3 grants totaling $185K. Net investment income was $45K.
Marineau Family Foundation at a glance
In short: Marineau Family Foundation gave $185K across 3 grants in 2025 (avg $62K), top state California. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $185,000
- +5.7% vs 2024
- Grants made (2025)
- 3
- -25.0% vs 2024
- Average grant
- $61,667
- +41.0% vs 2024
- Median grant
- $60,000
- Total assets
- $784,227
- -15.5% vs 2024
- Primary geography
- California (41% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Marineau Family Foundation funds
How this funder distributes its grants
Top Recipients
Top 3 recipients in 2025
The largest 2025 recipient was San Francisco Opera ($75K). Together the top 3 received $185K.
Grant Size Distribution
30 grants across all recorded years
The most common grant size was in the $50–100K range: 16 grants of 30 (53%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 3 itemized grants.
Cities
How Marineau Family Foundation gives
- Giving fell 35% from 2022 to 2025. Method
- In 2025 it paid out 359% of its IRS minimum distribution (the 5% rule). Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2025, annual grant giving ranged from $175K (2024) to $650K (2021). In 2025 it made 3 grants totaling $185K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| San Francisco Opera San Francisco, CA | TO SUPPORT Chloe Lamford's production of The Innocence | $75,000 |
| Opera America Inc New York, NY | general purpose | $60,000 |
| Santa Fe Opera Santa Fe, NM | Louisa Muller's production of La Traviata | $50,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $784,227 | $56,748 | $201,179 | $185,000 | 3 | $189,259 | $45,363 | $52,788 |
| 2024 | $928,422 | $86,008 | $189,887 | $175,000 | 4 | $178,550 | $74,671 | $54,341 |
| 2023 | $1,032,669 | $93,515 | $296,781 | $281,000 | 6 | $284,690 | $81,424 | $60,488 |
| 2022 | $1,236,376 | $89,524 | $307,910 | $282,500 | 6 | $286,470 | $74,584 | $73,133 |
| 2021 | $1,453,244 | $289,189 | $668,530 | $650,000 | 11 | $651,928 | $272,587 | $98,507 |
| 2020 | $1,832,836 | $125,841 | $486,539 | $465,000 | 11 | — | $107,069 | $112,822 |
| 2019 | $2,192,408 | $162,763 | $443,228 | $420,000 | 10 | — | $142,148 | $127,964 |
Under IRS private-foundation payout rules, Marineau Family Foundation reported a distributable amount of $53K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Marineau Family Foundation is led by Susan Marineau, President & Chief Financial since 2022 (on filings since 2019); none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Susan Marineau
President & Chief Financial
President & Chief Financial → President % Chief Financial, 2021
President % Chief Financial → President & Chief Financial, 2022
On filings since 2019
1 hr/week
No compensation reported
Philip Marineau
Secretary & Vice President
On filings since 2019
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about Marineau Family Foundation
How much does Marineau Family Foundation give each year?
Marineau Family Foundation gave $185K across 3 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $175K across 4 grants.
What is Marineau Family Foundation's typical grant size?
Marineau Family Foundation's median grant in 2025 was $60,000, and its average grant was $61,667, across 3 grants on its 2025 IRS Form 990-PF.
Where does Marineau Family Foundation give grants?
Marineau Family Foundation's top state is California, with 41% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were New York (32%) and New Mexico (27%).
Does Marineau Family Foundation give general operating support?
Yes: 33% of Marineau Family Foundation's 2025 grants with a stated purpose (1 of 3) were for general or operating support, per its 2025 IRS Form 990-PF.
How large is Marineau Family Foundation?
Marineau Family Foundation reported $784K in total assets on its 2025 IRS Form 990-PF. It paid out $189K in qualifying distributions that year, against a required minimum of $53K (roughly 5% of its investment assets).
What is Marineau Family Foundation's EIN?
Marineau Family Foundation's EIN (Employer Identification Number) is 20-8043517. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS June 15, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS November 12, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS November 14, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS July 17, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS October 21, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS April 22, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS March 26, 2026)
- IRS filings on file for fiscal years 2019–2025
Live grants for the work Marineau Family Foundation funds
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