Jinnie K Simonsen and John V Carbone
Jinnie K Simonsen and John V Carbone is a private foundation focused on Medical Research, based in Tiburon, CA. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $1.5M in total assets. In 2024, it awarded 15 grants totaling $297K. Net investment income was $144K.
Key facts about Jinnie K Simonsen and John V Carbone
In short: Jinnie K Simonsen and John V Carbone gave $297K across 15 grants in 2024 (avg $20K), mostly in California. Source: 2024 IRS Form 990-PF.
- EIN
- 85-2237636
- Latest 990 filing
- Form 990-PF, 2024
- Annual giving (2024)
- $296,744
- Grants made (2024)
- 15
- Average grant
- $19,783
- Median grant
- $5,000
- Total assets
- $1,508,502
- Primary geography
- California (64% of itemized 2024 grant dollars)
Data from IRS Form 990-PF, 2024; updated September 2026.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$1.5M
+2419.7% YoY
Annual Giving
$297K
+515.2% YoY
Grant Count
15
+7.1% YoY
Avg Grant Size
$20K
+474.2% YoY
Under IRS private-foundation payout rules, Jinnie K Simonsen and John V Carbone reported a distributable amount of $251K for 2024 — the minimum it must pay out in qualifying distributions.
How Jinnie K Simonsen and John V Carbone gives
- 40% of 2024 grantees were also funded in 2023. Method
- Giving grew 2635% from 2021 to 2024. Method
- In 2024 it paid out 142% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2024). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of all 15 itemized 2024 grant dollars.
Cities
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
Grant Size Distribution
42 grants across all recorded years
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Eatonville Dollars for Scholars Eatonville, WA | Contribution to General Fund. | $100,000 |
| Marin Health Foundation Greenbrae, CA | Contribution to General Fund. | $100,000 |
| SF Opera Guild San Francisco, CA | Contribution to General Fund. | $25,588 |
| By the Bay Hospice Larkspur, CA | Contribution to General Fund. | $20,000 |
| Marin Health Foundation Racoons Greenbrae, CA | Contribution to General Fund. | $12,500 |
| NatureBridge Sausalito, CA | Contribution to General Fund. | $8,100 |
| Nordstrom Foundation Settle, WA | Contribution to General Fund. | $7,456 |
| Marin Health Foundation Cancer Care Greenbrae, CA | Contribution to General Fund. | $5,000 |
| Integrated Community Services San Rafael, CA | Contribution to General Fund. | $5,000 |
| CHP Foundation Costa Mesa, CA | Contribution to General Fund. | $5,000 |
Financial History
Multi-year comparison from IRS filings
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $1,508,502 | $59,869 | $69,641 |
| Revenue | $1,727,877 | $45,944 | $159,446 |
| Expenses | $357,380 | $55,716 | $158,720 |
| Qualifying Distributions | $357,107 | $54,412 | $158,720 |
| Net Investment Income | $144,446 | $19,640 | $89,667 |
| Distributable Amount | $251,202 | $17,412 | $11,335 |
Data update history
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
Leadership & Key People
Officers and directors from IRS filings
Jinnie K Simonsen and John V Carbone is led by Jinnie K Simonsen, President & CEO on every filing since 2020; none of the 2 officers listed in 2024 report compensation.
Officers on the 2024 filing
Jinnie K Simonsen
President & CEO
On filings since 2020
No compensation reported
John V Carbone
Vice President
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 Jinnie K Simonsen and John V Carbone
How much does Jinnie K Simonsen and John V Carbone give each year?
Jinnie K Simonsen and John V Carbone gave $297K across 15 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $48K across 14 grants.
What is Jinnie K Simonsen and John V Carbone's typical grant size?
Jinnie K Simonsen and John V Carbone's median grant in 2024 was $5,000, and its average grant was $19,783, across 15 grants on its 2024 IRS Form 990-PF.
Where does Jinnie K Simonsen and John V Carbone give grants?
Jinnie K Simonsen and John V Carbone gives mostly in California: 64% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The next largest state was Washington (36%). The most frequent recipient cities were Greenbrae, CA (3 grants) and San Rafael, CA (3 grants).
Does Jinnie K Simonsen and John V Carbone give general operating support?
Yes: 100% of Jinnie K Simonsen and John V Carbone's 2024 grants with a stated purpose (15 of 15) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are Jinnie K Simonsen and John V Carbone's largest grantees?
Jinnie K Simonsen and John V Carbone's largest 2024 grantees include Eatonville Dollars for Scholars ($100,000), Marin Health Foundation ($100,000) and SF Opera Guild ($25,588), according to its 2024 IRS Form 990-PF. Together they received 76% of its itemized 2024 grant dollars.
How large is Jinnie K Simonsen and John V Carbone?
Jinnie K Simonsen and John V Carbone reported $1.5M in total assets on its 2024 IRS Form 990-PF. It paid out $357K in qualifying distributions that year, against a required minimum of $251K (roughly 5% of its investment assets).
What is Jinnie K Simonsen and John V Carbone?
Jinnie K Simonsen and John V Carbone is a private foundation focused on Medical Research, based in Tiburon, CA. It holds $1.5M in total assets as of 2024.
What is Jinnie K Simonsen and John V Carbone's EIN?
Jinnie K Simonsen and John V Carbone's EIN (Employer Identification Number) is 85-2237636. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Here's the math on researching Jinnie K Simonsen and John V Carbone by hand.
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