The Plumpjack Foundation
The foundation organizes fundraising activities and receives donations from various sources. The foundation makes grants and provides other assistance to various charitable organizations with the primary focus in two areas: (1) cancer prevention, education & support and (2) preventing the cycle of childhood poverty.
The Plumpjack Foundation at a glance
In short: The Plumpjack Foundation gave $145K across 4 grants in 2025 (avg $36K), mostly in California. Source: 2025 IRS Form 990.
- Annual giving (2025)
- $145,000
- +115.2% vs 2024
- Grants made (2025)
- 4
- -20.0% vs 2024
- Average grant
- $36,250
- +169.0% vs 2024
- Median grant
- $17,500
- Total assets
- $358,530
- -20.9% vs 2024
- Primary geography
- California (93% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
Who The Plumpjack Foundation funds
How this funder distributes its grants
Top Recipients
Top 4 recipients in 2025
The largest 2025 recipient was UCSF Foundation ($100K). Together the top 4 received $145K.
Grant Size Distribution
22 grants across all recorded years
The most common grant size was under $50K: 18 grants of 22 (82%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 4 itemized grants.
Cities
How The Plumpjack Foundation gives
- Giving grew 25% from 2022 to 2025. Method
From the foundation's IRS Form 990 filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $10K (2020) to $145K (2025). In 2025 it made 4 grants totaling $145K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| UCSF Foundation San Francisco, CA | Payments to Other Organizations | $100,000 |
| Tipping Point San Francisco, CA | Payments to Other Organizations | $25,000 |
| National Breast Cancer Coalition Washington, DC | Payments to Other Organizations | $10,000 |
| UCSF San Francisco, CA | Payments to Other Organizations | $10,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants |
|---|---|---|---|---|---|
| 2025 | $358,530 | $87,860 | $192,862 | $145,000 | 4 |
| 2024 | $453,353 | $193,157 | $125,914 | $67,382 | 5 |
| 2023 | $400,484 | $267,699 | $260,551 | $143,842 | 4 |
| 2022 | $377,047 | $244,653 | $197,720 | $115,600 | 5 |
| 2021 | $329,996 | $237,554 | $167,727 | $79,050 | 4 |
| 2020 | $269,925 | $84,513 | $54,274 | $10,000 | 1 |
About The Plumpjack Foundation
Based on IRS filings
The Plumpjack Foundation is a public charity focused on Medical Research, based in San Francisco, CA. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $359K in total assets. In 2025, it awarded 4 grants totaling $145K.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
The Plumpjack Foundation is led by Hilary Newsom, President on every filing since 2020; none of the 4 officers listed in 2025 report compensation.
Officers on the 2025 filing
Hilary Newsom
President
On filings since 2020
2 hrs/week
No compensation reported
Jill Hamer
Director
On filings since 2020
1 hr/week
No compensation reported
Shyla Hendrickson
Director
On filings since 2020
1 hr/week
No compensation reported
Jeremy Scherer
Treasurer & Secretary
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 The Plumpjack Foundation
How much does The Plumpjack Foundation give each year?
The Plumpjack Foundation gave $145K across 4 grants in 2025, according to its 2025 IRS Form 990. In 2024 it gave $67K across 5 grants.
What is The Plumpjack Foundation's typical grant size?
The Plumpjack Foundation's median grant in 2025 was $17,500, and its average grant was $36,250, across 4 grants on its 2025 IRS Form 990.
Where does The Plumpjack Foundation give grants?
The Plumpjack Foundation gives mostly in California: 93% of the grant dollars itemized on its 2025 IRS Form 990 went to recipients there. The next largest state was District of Columbia (7%). The most frequent recipient cities were San Francisco, CA (3 grants).
Does The Plumpjack Foundation give general operating support?
Not in 2025: none of the 4 grants with a stated purpose on The Plumpjack Foundation's 2025 IRS Form 990 were described as general or operating support. Recurring purposes include "Payments to Other Organizations" (4 grants).
How large is The Plumpjack Foundation?
The Plumpjack Foundation reported $359K in total assets on its 2025 IRS Form 990. Its revenue that year was $88K.
What is The Plumpjack Foundation?
The Plumpjack Foundation is a public charity focused on Medical Research, based in San Francisco, CA. It holds $359K in total assets as of 2025.
What is The Plumpjack Foundation's EIN?
The Plumpjack Foundation's EIN (Employer Identification Number) is 46-3078706. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2020 (received by the IRS November 15, 2021)
- Updated Form 990 for fiscal year 2021 (received by the IRS November 15, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS November 6, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS November 7, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS November 10, 2025)
- Added Form 990 for fiscal year 2025 (received by the IRS July 16, 2026)
Live grants for the work The Plumpjack Foundation funds
Medical Research Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in The Plumpjack Foundation's focus areas in our free grants database
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