Tiburon Foundation
Tiburon Foundation is a private foundation, based in Minneapolis, MN. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $643 in total assets.
Tiburon Foundation at a glance
- Total assets
- $643
- -6.9% vs 2024
- Expenses (2025)
- $48
- -99.1% vs 2024
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026.
Who Tiburon Foundation funds
Geographic Focus
Where this funder awards grants
States
Cities
How Tiburon Foundation gives
- In 2024 it paid out well above 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 2020 to 2024, annual grant giving ranged from $3K (2021) to $15K (2020). In 2024 it reported $5K in grants paid, as a total without an itemized list.
Hatched bars: grants paid as reported on the IRS filing, which lists no individual grants for that year.
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Distributable Amount |
|---|---|---|---|---|---|---|---|
| 2025 | $643 | — | $48 | — | — | — | $33 |
| 2024 | $691 | $5,000 | $5,621 | $5,000 | Total only | $5,000 | $281 |
| 2023 | $1,312 | — | $46 | — | — | — | $66 |
| 2022 | $1,357 | $6,000 | $5,447 | $5,000 | Total only | $5,000 | $60 |
| 2021 | $804 | — | $2,663 | $2,500 | Total only | $2,500 | $145 |
| 2020 | $3,467 | — | $14,878 | $14,500 | 6 | — | $683 |
"Total only": grants paid as reported on the IRS filing, which lists no individual grants for that year.
Under IRS private-foundation payout rules, Tiburon Foundation reported a distributable amount of $33 for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Tiburon Foundation is led by Amie L DeHarpporte, President Secretary & Director since 2021 (on filings since 2020); none of the 3 officers listed in 2025 report compensation.
Officers on the 2025 filing
Amie L DeHarpporte
President Secretary & Director
President, Secretary & Director → President Secretary & Director, 2021
On filings since 2020
1 hr/week
No compensation reported
Jason Zimmerman
Director
On filings since 2020
1 hr/week
No compensation reported
Ronald E DeHarpporte
Treasurer & Director
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2025. "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 Tiburon Foundation
How large is Tiburon Foundation?
Tiburon Foundation reported $643 in total assets on its 2025 IRS Form 990-PF.
Where does Tiburon Foundation operate?
Tiburon Foundation has awarded grants in California, Minnesota, New York.
How much is Tiburon Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2025, Tiburon Foundation reported a distributable amount of $33 on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Tiburon Foundation's EIN?
Tiburon Foundation's EIN (Employer Identification Number) is 26-3471852. IRS Form 990 filing data is available on this page for 2020–2025.
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 May 17, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 16, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 16, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 14, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 13, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 2, 2026)
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Figures come from Tiburon Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
Tiburon Foundation down — hundreds of funders to go?