The Quercus Fund Inc
The Quercus Fund Inc is a private foundation, based in Palm Beach, FL. IRS filing data is available from 2021 through 2025. As of 2025, the organization holds $18.1M in total assets. In 2025, it awarded 4 grants totaling $927K. Net investment income was $1.6M.
The Quercus Fund Inc at a glance
In short: The Quercus Fund Inc gave $927K across 4 grants in 2025 (avg $232K), top state Massachusetts. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $927,000
- +10.7% vs 2024
- Grants made (2025)
- 4
- +0.0% vs 2024
- Average grant
- $231,750
- +10.7% vs 2024
- Median grant
- $263,500
- Total assets
- $18,117,143
- +3.4% vs 2024
- Primary geography
- Massachusetts (38% 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 The Quercus Fund Inc funds
How this funder distributes its grants
Top Recipients
Top 4 recipients in 2025
The largest 2025 recipient was Fellows of Harvard College ($350K). Together the top 4 received $927K.
Grant Size Distribution
13 grants across all recorded years
The most common grant size was in the $250–500K range: 4 grants of 13 (31%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 4 itemized grants.
Cities
How The Quercus Fund Inc gives
- Giving held roughly steady from 2022 to 2025 (+17%). Method
- In 2025 it paid out 107% 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 2021 to 2025, annual grant giving ranged from $630K (2021) to $927K (2025). In 2025 it made 4 grants totaling $927K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Fellows of Harvard College Boston, MA | Ecological Research & Education | $350,000 |
| Highstead Foundation Inc Redding, CT | Research & Education | $327,000 |
| Open Medicine Foundation Agoura Hills, CA | Healthcare Research & Education | $200,000 |
| VNA Health Group Neptune, NJ | Nursing Education | $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 | $18,117,143 | $1,667,630 | $1,050,053 | $927,000 | 4 | $927,000 | $1,558,499 | $867,665 |
| 2024 | $17,514,947 | $759,554 | $945,564 | $837,500 | 4 | $837,500 | $661,303 | $782,151 |
| 2023 | $16,090,415 | $1,117,285 | $833,876 | $737,500 | 1 | $737,500 | $1,021,698 | $732,444 |
| 2022 | $14,904,126 | $-212,265 | $914,450 | $790,000 | 2 | $790,000 | $69,916 | $770,808 |
| 2021 | $16,758,458 | $1,479,302 | $729,084 | $630,000 | 2 | — | $1,380,979 | $754,340 |
Under IRS private-foundation payout rules, The Quercus Fund Inc reported a distributable amount of $868K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Quercus Fund Inc is led by Elisabeth C. Dudley, President & Director on every filing since 2021; none of the 7 officers listed in 2025 report compensation.
Officers on the 2025 filing
Elisabeth C. Dudley
President & Director
On filings since 2021
1 hr/week
No compensation reported
Frank E. Shanley
Assistant Treasurer & Director
On filings since 2021
1 hr/week
No compensation reported
Henry C. Dudley
Vice President, Treasurer & Director
On filings since 2021
1 hr/week
No compensation reported
Jane C. Dudley
Vice President & Director
On filings since 2021
1 hr/week
No compensation reported
Sarah Dudley Plimpton
Vice President & Director
On filings since 2021
1 hr/week
No compensation reported
Christiane McNamara
Assistant Treasurer & Secretary
Assistant Treasurer & Assistant Secretary → Assistant Treasurer & Secretary, 2025
On filings since 2021
1 hr/week
No compensation reported
Irina Fayman
Assistant Secretary
Secretary → Assistant Secretary, 2025
On filings since 2021
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2021–2025. "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 Quercus Fund Inc
How much does The Quercus Fund Inc give each year?
The Quercus Fund Inc gave $927K across 4 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $838K across 4 grants.
What is The Quercus Fund Inc's typical grant size?
The Quercus Fund Inc's median grant in 2025 was $263,500, and its average grant was $231,750, across 4 grants on its 2025 IRS Form 990-PF.
Where does The Quercus Fund Inc give grants?
The Quercus Fund Inc's top state is Massachusetts, with 38% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were Connecticut (35%) and California (22%).
Does The Quercus Fund Inc give general operating support?
Not in 2025: none of the 4 grants with a stated purpose on The Quercus Fund Inc's 2025 IRS Form 990-PF were described as general or operating support.
How large is The Quercus Fund Inc?
The Quercus Fund Inc reported $18.1M in total assets on its 2025 IRS Form 990-PF. It paid out $927K in qualifying distributions that year, against a required minimum of $868K (roughly 5% of its investment assets).
What is The Quercus Fund Inc's EIN?
The Quercus Fund Inc's EIN (Employer Identification Number) is 13-4156738. IRS Form 990 filing data is available on this page for 2021–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2021–2025
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