Joan B Berkowitz Supporting Organization Inc
To perform the functions of, carry out the purposes of and undertake any other activity to support the charitable purposes and activities of the children's center of brookline and greater boston, inc. All activities shall be for the exclusive benefit of that organization which is an organization described under sections 501(c)(3) and 509(a)(1) or 509(a)(2) of the internal revenue code.
Joan B Berkowitz Supporting Organization Inc at a glance
In short: Joan B Berkowitz Supporting Organization Inc gave $75K across 1 grant in 2025 (avg $75K), mostly in Massachusetts. Source: 2025 IRS Form 990.
- Annual giving (2025)
- $75,000
- +50.0% vs 2024
- Grants made (2025)
- 1
- +0.0% vs 2024
- Average grant
- $75,000
- +50.0% vs 2024
- Median grant
- $75,000
- Total assets
- $2,377,075
- +4.8% vs 2024
- Primary geography
- Massachusetts (100% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
Who Joan B Berkowitz Supporting Organization Inc funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was The Children's Center of Brookline and Greater Boston Inc ($75K).
Grant Size Distribution
5 grants across all recorded years
The most common grant size was in the $50–100K range: 5 grants of 5 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2025 grant dollars on its one itemized grant.
States
Cities
How Joan B Berkowitz Supporting Organization Inc gives
- Giving grew 50% 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 2019 to 2025, annual grant giving ranged from $50K (2019) to $75K (2025). In 2025 it made 1 grant totaling $75K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| The Children's Center of Brookline and Greater Boston Inc Brookline, MA | Supporting Organization | $75,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $2,377,075 | $72,381 | $98,150 | $75,000 | 1 | $72,381 |
| 2024 | $2,268,028 | $76,463 | $75,396 | $50,000 | 1 | $76,463 |
| 2023 | $1,990,733 | $42,279 | $74,803 | $50,000 | 1 | $42,279 |
| 2022 | $1,932,977 | $42,478 | $83,346 | $50,000 | 1 | $42,478 |
| 2021 | $2,099,030 | $42,719 | $60,075 | $50,000 | 1 | $42,719 |
| 2020 | $1,689,681 | $90,156 | $75,123 | $50,000 | 1 | $90,156 |
| 2019 | $1,660,386 | $151,638 | $77,038 | $50,000 | 1 | $151,638 |
About Joan B Berkowitz Supporting Organization Inc
Based on IRS filings
Joan B Berkowitz Supporting Organization Inc is a public charity focused on Education, based in Arlington, MA. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $2.4M in total assets. In 2025, it awarded 1 grant totaling $75K. Net investment income was $72K.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
Joan B Berkowitz Supporting Organization Inc is led by Rosemary Mattuck, President & Director on every filing since 2021; none of the 5 officers listed in 2025 report compensation.
Officers on the 2025 filing
Rosemary Mattuck
President & Director
On filings since 2021
1 hr/week
No compensation reported
Ilan Wapinsky
Director
On filings since 2019
0.3 hrs/week
No compensation reported
Laura Walsh
Secretary & Director
On filings since 2019
0.1 hrs/week
No compensation reported
Yuval Gilbert
Treasurer & Director
On filings since 2019
1 hr/week
No compensation reported
Rohit Gupta
Director
On filings since 2023
0.3 hrs/week
No compensation reported
Former officers (3)
- Former: Brian Freeman (2021–2022) — Director
- Former: Deborah Filler (2019–2020) — Director
- Former: Joan Berkowitz (2019) — President & Director
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 Joan B Berkowitz Supporting Organization Inc
How much does Joan B Berkowitz Supporting Organization Inc give each year?
Joan B Berkowitz Supporting Organization Inc gave $75K across 1 grant in 2025, according to its 2025 IRS Form 990. In 2024 it gave $50K across 1 grant.
How large is Joan B Berkowitz Supporting Organization Inc?
Joan B Berkowitz Supporting Organization Inc reported $2.4M in total assets on its 2025 IRS Form 990. Its revenue that year was $72K.
What is Joan B Berkowitz Supporting Organization Inc?
Joan B Berkowitz Supporting Organization Inc is a public charity focused on Education, based in Arlington, MA. It holds $2.4M in total assets as of 2025.
Where does Joan B Berkowitz Supporting Organization Inc operate?
Joan B Berkowitz Supporting Organization Inc has awarded grants in Massachusetts.
What is Joan B Berkowitz Supporting Organization Inc's EIN?
Joan B Berkowitz Supporting Organization Inc's EIN (Employer Identification Number) is 33-1025137. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2019 (received by the IRS June 15, 2020)
- Updated Form 990 for fiscal year 2020 (received by the IRS June 15, 2021)
- Updated Form 990 for fiscal year 2021 (received by the IRS June 13, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS June 12, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS May 8, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS February 26, 2025)
- Updated Form 990 for fiscal year 2025 (received by the IRS January 16, 2026)
- IRS filings on file for fiscal years 2019–2025
Live grants for the work Joan B Berkowitz Supporting Organization Inc funds
Education Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in Joan B Berkowitz Supporting Organization Inc's focus areas in our free grants database
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