The Weinberger Foundation
The Weinberger Foundation is a private foundation, based in Mount Desert, ME. IRS filing data is available from 2020 through 2021. In 2021, it awarded 6 grants totaling $76K.
The Weinberger Foundation at a glance
In short: The Weinberger Foundation gave $76K across 6 grants in 2021 (avg $13K), mostly in District of Columbia. Source: 2021 IRS Form 990-PF.
- Annual giving (2021)
- $76,029
- Grants made (2021)
- 6
- Average grant
- $12,672
- Median grant
- $7,500
- Primary geography
- District of Columbia (62% of itemized 2021 grant dollars)
- Latest 990 filing
- Form 990-PF, 2021 View filing
Data from IRS Form 990-PF, 2021; updated September 2026.
Who The Weinberger Foundation funds
How this funder distributes its grants
Top Recipients
Top 6 recipients in 2021
The largest 2021 recipient was Library of Congress- (Appraised FMV 85000) ($47K). Together the top 6 received $76K.
Grant Size Distribution
6 grants across all recorded years
The most common grant size was under $50K: 6 grants of 6 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2021 grant dollars across all 6 itemized grants.
Cities
How The Weinberger Foundation gives
- In 2021 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
In 2021 it made 6 grants totaling $76K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Library of Congress- (Appraised FMV 85000) Washington, DC | General Use | $47,499 |
| Friends of China Camp San Rafael, CA | General Use | $10,030 |
| Forever Forest San Francisco, CA | General Use | $10,000 |
| California Alpine Club Foundation Mill Valley, CA | General Use | $5,000 |
| California State Parks Foundation San Francisco, CA | General Use | $2,000 |
| One Tam San Francisco, CA | General Use | $1,500 |
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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 |
|---|---|---|---|---|---|---|---|
| 2021 | — | $27 | $83,469 | $76,029 | 6 | $76,029 | $3,746 |
| 2020 | $83,442 | $189 | $3,265 | — | — | — | $4,204 |
Under IRS private-foundation payout rules, The Weinberger Foundation reported a distributable amount of $4K for 2021 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Weinberger Foundation is led by Mavis Weinberger, Principal Trustee on every filing since 2020 — the only officer listed, and uncompensated.
Officers on the 2021 filing
Mavis Weinberger
Principal Trustee
On filings since 2020
5 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2020–2021. "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 Weinberger Foundation
How much does The Weinberger Foundation give each year?
The Weinberger Foundation gave $76K across 6 grants in 2021, according to its 2021 IRS Form 990-PF.
What is The Weinberger Foundation's typical grant size?
The Weinberger Foundation's median grant in 2021 was $7,500, and its average grant was $12,672, across 6 grants on its 2021 IRS Form 990-PF.
Where does The Weinberger Foundation give grants?
The Weinberger Foundation gives mostly in District of Columbia: 62% of the grant dollars itemized on its 2021 IRS Form 990-PF went to recipients there. The next largest state was California (38%). The most frequent recipient cities were San Francisco, CA (3 grants).
Does The Weinberger Foundation give general operating support?
Yes: 100% of The Weinberger Foundation's 2021 grants with a stated purpose (6 of 6) were for general or operating support, per its 2021 IRS Form 990-PF.
Who are The Weinberger Foundation's largest grantees?
The Weinberger Foundation's largest 2021 grantees include Library of Congress- (Appraised FMV 85000) ($47,499), Friends of China Camp ($10,030) and Forever Forest ($10,000), according to its 2021 IRS Form 990-PF. Together they received 89% of its itemized 2021 grant dollars.
How much is The Weinberger Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2021, The Weinberger Foundation reported a distributable amount of $4K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is The Weinberger Foundation's EIN?
The Weinberger Foundation's EIN (Employer Identification Number) is 41-6553512. IRS Form 990 filing data is available on this page for 2020–2021.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(3)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS May 11, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 11, 2022)
- IRS filings on file for fiscal years 2020–2021
Live grants for the work The Weinberger Foundation funds
Philanthropy, Voluntarism & Grantmaking Open opportunities, soonest deadline first.
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Browse active grant opportunities in The Weinberger Foundation's focus areas in our free grants database
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