Mary M Tanenbaum Foundation
Mary M Tanenbaum Foundation is a private foundation, based in New York, NY. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $270K in total assets. In 2025, it awarded 4 grants totaling $143K. Net investment income was $94K.
Mary M Tanenbaum Foundation at a glance
In short: Mary M Tanenbaum Foundation gave $143K across 4 grants in 2025 (avg $36K), mostly in California. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $142,500
- +185.0% vs 2024
- Grants made (2025)
- 4
- +300.0% vs 2024
- Average grant
- $35,625
- -28.7% vs 2024
- Median grant
- $17,500
- Total assets
- $269,612
- -16.0% vs 2024
- Primary geography
- California (79% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated November 2026.
Who Mary M Tanenbaum Foundation funds
How this funder distributes its grants
Top Recipients
Top 4 recipients in 2025
The largest 2025 recipient was Asian Art Museum ($103K). Together the top 4 received $143K.
Grant Size Distribution
9 grants across all recorded years
The most common grant size was under $50K: 5 grants of 9 (56%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 4 itemized grants.
States
Cities
How Mary M Tanenbaum Foundation gives
- Giving grew 78% from 2022 to 2025. Method
- In 2025 it paid out 129% 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 2019 to 2025, annual grant giving ranged from $35K (2019) to $143K (2025). In 2025 it made 4 grants totaling $143K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Asian Art Museum San Francisco, CA | Directors Fund $2,500 General Purpose $100,000 | $102,500 |
| Jewish Family & Children's Service New York, NY | General Purpose | $25,000 |
| Stanford University Stanford, CA | Library Fund | $10,000 |
| New York Community Trust Fund New York, NY | General Purpose | $5,000 |
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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 | $269,612 | $95,912 | $147,350 | $142,500 | 4 | $144,600 | $93,813 | $111,929 |
| 2024 | $321,050 | $49,249 | $54,100 | $50,000 | 1 | $51,950 | $47,299 | $97,214 |
| 2023 | $482,914 | $25,783 | $54,550 | $50,000 | 1 | $51,950 | $23,833 | $73,560 |
| 2022 | $511,681 | $22,451 | $86,900 | $80,000 | 2 | $84,500 | $20,951 | $72,601 |
| 2021 | $573,395 | $19,830 | $43,019 | $40,000 | 1 | $41,875 | $19,205 | $69,900 |
| 2020 | $596,584 | $19,296 | $48,470 | $45,000 | 1 | — | $18,655 | $50,866 |
| 2019 | $625,758 | $20,016 | $43,131 | $35,000 | 1 | — | $18,072 | $54,147 |
Under IRS private-foundation payout rules, Mary M Tanenbaum Foundation reported a distributable amount of $112K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Mary M Tanenbaum Foundation is led by Ann Tannenbaum, President & Trustee since 2022 (on filings since 2019) — the only officer listed, and uncompensated.
Officers on the 2025 filing
Ann Tannenbaum
President & Trustee
President Trustee → President & Trustee, 2022
On filings since 2019
0.5 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2019–2025. "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 Mary M Tanenbaum Foundation
How much does Mary M Tanenbaum Foundation give each year?
Mary M Tanenbaum Foundation gave $143K across 4 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $50K across 1 grant.
What is Mary M Tanenbaum Foundation's typical grant size?
Mary M Tanenbaum Foundation's median grant in 2025 was $17,500, and its average grant was $35,625, across 4 grants on its 2025 IRS Form 990-PF.
Where does Mary M Tanenbaum Foundation give grants?
Mary M Tanenbaum Foundation gives mostly in California: 79% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was New York (21%). The most frequent recipient cities were New York, NY (2 grants).
Does Mary M Tanenbaum Foundation give general operating support?
Yes: 75% of Mary M Tanenbaum Foundation's 2025 grants with a stated purpose (3 of 4) were for general or operating support, per its 2025 IRS Form 990-PF.
How large is Mary M Tanenbaum Foundation?
Mary M Tanenbaum Foundation reported $270K in total assets on its 2025 IRS Form 990-PF. It paid out $145K in qualifying distributions that year, against a required minimum of $112K (roughly 5% of its investment assets).
What is Mary M Tanenbaum Foundation's EIN?
Mary M Tanenbaum Foundation's EIN (Employer Identification Number) is 46-6498939. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated November 2026. Sourced from IRS Form 990-PF filings.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS September 1, 2026)
- Updated Form 990-PF for fiscal year 2019 (received by the IRS August 12, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS November 12, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS November 15, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS November 15, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS September 9, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS September 13, 2025)
- IRS filings on file for fiscal years 2019–2024
Live grants for the work Mary M Tanenbaum Foundation funds
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