Rottenberg Family Foundation
Rottenberg Family Foundation is a private foundation, based in Ventura, CA. IRS filing data is available from 2024 through 2025. As of 2025, the organization holds $103K in total assets. In 2025, it awarded 1 grant totaling $17K. Net investment income was $8K.
Rottenberg Family Foundation at a glance
In short: Rottenberg Family Foundation gave $17K across 1 grant in 2025 (avg $17K), mostly in Michigan. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $17,000
- +183.3% vs 2024
- Grants made (2025)
- 1
- +0.0% vs 2024
- Average grant
- $17,000
- +183.3% vs 2024
- Median grant
- $17,000
- Total assets
- $103,013
- -11.1% vs 2024
- Primary geography
- Michigan (100% 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 Rottenberg Family Foundation funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was University of Michigan ($17K).
Grant Size Distribution
2 grants across all recorded years
The most common grant size was under $50K: 2 grants of 2 (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
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2024 to 2025, annual grant giving ranged from $6K (2024) to $17K (2025). In 2025 it made 1 grant totaling $17K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| University of Michigan Ann Arbor, MI | To Support Education | $17,000 |
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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 |
|---|---|---|---|---|---|---|---|
| 2025 | $103,013 | $7,563 | $18,156 | $17,000 | 1 | $17,000 | $7,563 |
| 2024 | $115,878 | $6,020 | $7,062 | $6,000 | 1 | $6,000 | $6,020 |
Leadership & Key People
Officers and directors from IRS filings
Rottenberg Family Foundation is led by Mark Rottenberg, Director on every filing since 2024 — the only officer listed, and uncompensated.
Officers on the 2025 filing
Mark Rottenberg
Director
On filings since 2024
No compensation reported
Data from IRS Form 990 filings, 2024–2025. "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 Rottenberg Family Foundation
How much does Rottenberg Family Foundation give each year?
Rottenberg Family Foundation gave $17K across 1 grant in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $6K across 1 grant.
How large is Rottenberg Family Foundation?
Rottenberg Family Foundation reported $103K in total assets on its 2025 IRS Form 990-PF. Its revenue that year was $8K.
Where does Rottenberg Family Foundation operate?
Rottenberg Family Foundation has awarded grants in Michigan.
What is Rottenberg Family Foundation's EIN?
Rottenberg Family Foundation's EIN (Employer Identification Number) is 20-3502376. IRS Form 990 filing data is available on this page for 2024–2025.
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 2024 (received by the IRS March 26, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS April 13, 2026)
- IRS filings on file for fiscal years 2024–2025
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