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 2024. As of 2024, the organization holds $321K in total assets. In 2024, it awarded 1 grant totaling $50K. Net investment income was $47K.
Key facts about Mary M Tanenbaum Foundation
In short: Mary M Tanenbaum Foundation gave $50K across 1 grant in 2024 (avg $50K), mostly in California. Source: 2024 IRS Form 990-PF.
- EIN
- 46-6498939
- Latest 990 filing
- Form 990-PF, 2024
- Annual giving (2024)
- $50,000
- Grants made (2024)
- 1
- Average grant
- $50,000
- Median grant
- $50,000
- Total assets
- $321,050
- Primary geography
- California (100% of itemized 2024 grant dollars)
Data from IRS Form 990-PF, 2024; updated October 2026.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$321K
-33.5% YoY
Annual Giving
$50K
+0.0% YoY
Grant Count
1
+0.0% YoY
Avg Grant Size
$50K
+0.0% YoY
Under IRS private-foundation payout rules, Mary M Tanenbaum Foundation reported a distributable amount of $97K for 2024 — the minimum it must pay out in qualifying distributions.
How Mary M Tanenbaum Foundation gives
- Giving grew 25% from 2021 to 2024. Method
- In 2024 it paid out 53% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Ready to take the next step with Mary M Tanenbaum Foundation?
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2024 grant dollars on its one itemized grant.
States
Cities
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2024, annual grant giving ranged from $35K (2019) to $80K (2022). In 2024 it made 1 grant totaling $50K.
Grant Insights
How this funder distributes its grants
Top Recipients
Top recipient in 2024
The largest 2024 recipient was Asian Art Museum ($50K).
Grant Size Distribution
6 grants across all recorded years
The most common grant size was under $50K: 3 grants of 6 (50%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Asian Art Museum San Francisco, CA | General Purpose | $50,000 |
Financial History
Multi-year comparison from IRS filings
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $321,050 | $482,914 | $511,681 |
| Revenue | $49,249 | $25,783 | $22,451 |
| Expenses | $54,100 | $54,550 | $86,900 |
| Qualifying Distributions | $51,950 | $51,950 | $84,500 |
| Net Investment Income | $47,299 | $23,833 | $20,951 |
| Distributable Amount | $97,214 | $73,560 | $72,601 |
Data update history
When this profile's IRS filing data changed on Grantable
- 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
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 2024 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, 2019–2024. "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 Mary M Tanenbaum Foundation
How much does Mary M Tanenbaum Foundation give each year?
Mary M Tanenbaum Foundation gave $50K across 1 grant in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $50K across 1 grant.
How large is Mary M Tanenbaum Foundation?
Mary M Tanenbaum Foundation reported $321K in total assets on its 2024 IRS Form 990-PF. It paid out $52K in qualifying distributions that year, against a required minimum of $97K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
Where does Mary M Tanenbaum Foundation operate?
Mary M Tanenbaum Foundation has awarded grants in California, New Jersey.
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 2019–2024.
Data last updated October 2026. Sourced from IRS Form 990-PF filings.
Here's the math on researching Mary M Tanenbaum Foundation by hand.
Explore Open Grants
Browse active grant opportunities in Mary M Tanenbaum Foundation's focus areas in our free grants database
Similar Funders
Funders with grantees in common
Dhanam Foundation
Palo Alto, CA
DHANAM FOUNDATION supports a broad mix of charitable work, including education, peace, conservation, and the arts, with 2024 grants primarily going to organizations in Pennsylvania, California, and Washington, DC. Its 38 grants ranged from $5,000 to $12 million, with a median of $50,000; the profile does not state whether it accepts unsolicited requests.
Assets
$254.2M
Grants
38
Total Given
$20.2M
Shi Zhang Family Foundation
Los Altos, CA
Assets
$3.7M
Grants
6
Total Given
$86K
Ralph & Marsha Guggenheim Family
San Francisco, CA
Assets
$216K
Grants
133
Total Given
$158K
Delta Dental of California
San Francisco, CA
Delta Dental of California supports dental care access, oral health education and research, scholarships, and community needs, with most reported grant dollars going to California organizations. Individual awards generally do not exceed $100,000; the 2024 median was $15,000. Access to Care and Research and Scholarships grants are by invitation only, while procedures for other programs vary.
Assets
$4.3B
Grants
27
Total Given
$18.1M
Paul S Nadler Family Charitable
New York, NY
The foundation supports a range of charitable organizations, including public media, environmental, religious, health, and legal-service groups, with recent grants concentrated in California, New York, and Washington, DC. Its 2025 grants ranged from $500 to $55,000, with a median of $5,000. It gives only to preselected organizations and does not accept unsolicited requests.
Assets
$11.6M
Grants
73
Total Given
$956K
Dean L & Rosemarie Buntrock Foundation
Oakbrook Terrace, IL
The foundation supports a broad range of charitable, educational, religious, arts, and public-policy organizations, with 2024 grants ranging from $50 to $250,000 and a median of $1,250. Most grant dollars went to Illinois, with additional support in California, South Dakota, Virginia, and Iowa. It funds only preselected organizations and does not accept unsolicited requests.
Assets
$4.6M
Grants
95
Total Given
$1.3M
Shoucheng Zhang Foundation
Stanford, CA
Assets
$2.9M
Grants
5
Total Given
$178K
Red Husky Foundation
Los Gatos, CA
Assets
$6.4M
Grants
3
Total Given
$96K
The S & J Tom Family Foundation
Berkeley, CA
Assets
$975K
Grants
3
Total Given
$63K
Richard a Raisler Foundation
Fair Oaks, CA
Assets
$3K
Grants
7
Total Given
$485
CM Capital Foundation
Palo Alto, CA
The foundation funds education, healthcare, and community projects, with priority for disadvantaged people—especially children, youth, and families—and a strong preference for Santa Clara County, California. Its 2024 grants ranged from $100 to $50,000, with a median of $1,000. It accepts requests: applicants should call Elizabeth Hammack to request a written application.
Assets
$4.5M
Grants
53
Total Given
$222K
The Naren & Vinita Gupta Foundation
Woodside, CA
The foundation supports a range of charitable work, including mathematical sciences, Asian health research and education, and community organizations. Its 2025 grants ranged from $1,000 to $360,750, with a median of $10,000; 94% of grant dollars went to California and 6% to Washington, D.C. It funds only preselected organizations and does not accept unsolicited requests.
Assets
$15.2M
Grants
19
Total Given
$727K
More Funders in New York
Mary M Tanenbaum Foundation down — hundreds of funders to go?