Long Family Foundation
Long Family Foundation is a private foundation, based in Mill Valley, CA. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $353K in total assets. In 2024, it awarded 1 grant totaling $2K. Net investment income was $29K.
Long Family Foundation at a glance
In short: Long Family Foundation gave $2K across 1 grant in 2024 (avg $2K), mostly in Arizona. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $2,000
- -88.2% vs 2023
- Grants made (2024)
- 1
- -66.7% vs 2023
- Average grant
- $2,000
- -64.7% vs 2023
- Median grant
- $2,000
- Total assets
- $353,456
- +10.9% vs 2023
- Primary geography
- Arizona (100% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026.
Who Long Family Foundation funds
How this funder distributes its grants
Top Recipients
Top recipient in 2024
The largest 2024 recipient was ALS Arizona ($2K).
Grant Size Distribution
18 grants across all recorded years
The most common grant size was under $50K: 18 grants of 18 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2024 grant dollars on its one itemized grant.
Cities
How Long Family Foundation gives
- Giving fell 68% from 2021 to 2024. Method
- In 2024 it paid out 12% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. 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 2020 to 2024, annual grant giving ranged from $2K (2024) to $17K (2023). In 2024 it made 1 grant totaling $2K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| ALS Arizona Phoenix, AZ | Unrestricted | $2,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $353,456 | $35,888 | $9,193 | $2,000 | 1 | $2,000 | $29,310 | $16,640 |
| 2023 | $318,816 | $15,882 | $23,163 | $17,000 | 3 | $17,000 | $10,370 | $14,392 |
| 2022 | $278,755 | $5,297 | $16,938 | $11,435 | 5 | $11,435 | $3,643 | $13,713 |
| 2021 | $310,694 | $19,408 | $12,440 | $6,300 | 4 | $6,300 | $3,671 | $13,331 |
| 2020 | $268,143 | $2,719 | $15,881 | $11,000 | 5 | — | $1,902 | $14,050 |
Under IRS private-foundation payout rules, Long Family Foundation reported a distributable amount of $17K for 2024 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Long Family Foundation's 2024 filing lists 4 officers; none of the 4 officers listed in 2024 report compensation.
Officers on the 2024 filing
Amy Long Stoll
Director
On filings since 2020
No compensation reported
Anna Long Matte
Director
On filings since 2020
No compensation reported
Marilyn Long
Director
On filings since 2020
No compensation reported
Robert P. Long
Director
On filings since 2020
No compensation reported
Data from IRS Form 990 filings, 2020–2024. "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 Long Family Foundation
How much does Long Family Foundation give each year?
Long Family Foundation gave $2K across 1 grant in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $17K across 3 grants.
How large is Long Family Foundation?
Long Family Foundation reported $353K in total assets on its 2024 IRS Form 990-PF. It paid out $2K in qualifying distributions that year, against a required minimum of $17K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
Where does Long Family Foundation operate?
Long Family Foundation has awarded grants in Arizona, California, Illinois, Missouri, Nebraska.
What is Long Family Foundation's EIN?
Long Family Foundation's EIN (Employer Identification Number) is 36-4205644. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated October 2026. Sourced from IRS Form 990-PF filings.
Data update history
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS September 25, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS April 5, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS July 11, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS June 4, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS November 5, 2025)
- IRS filings on file for fiscal years 2020–2024
Explore Open Grants
Browse active grant opportunities in Long Family Foundation's focus areas in our free grants database
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