Bill and Dianne Mensch Foundation
Bill and Dianne Mensch Foundation is a private foundation, based in Mesa, AZ. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $17K in total assets. In 2025, it awarded 9 grants totaling $5K. Net investment income was $2.
Bill and Dianne Mensch Foundation at a glance
In short: Bill and Dianne Mensch Foundation gave $5K across 9 grants in 2025 (avg $523.333), mostly in Arizona. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $4,710
- -96.1% vs 2024
- Grants made (2025)
- 9
- -18.2% vs 2024
- Average grant
- $523
- -95.2% vs 2024
- Median grant
- $180
- Total assets
- $16,746
- -23.9% vs 2024
- Primary geography
- Arizona (53% 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 Bill and Dianne Mensch Foundation funds
How this funder distributes its grants
Top Recipients
Top 9 recipients in 2025
The largest 2025 recipient was Stray Cat Blues Rescue ($1K). Together the top 9 received $5K.
Grant Size Distribution
54 grants across all recorded years
The most common grant size was under $50K: 52 grants of 54 (96%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 9 itemized grants.
Cities
How Bill and Dianne Mensch Foundation gives
- Giving fell 60% from 2022 to 2025. Method
- In 2025 it paid out 505% 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 $5K (2025) to $120K (2024). In 2025 it made 9 grants totaling $5K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Stray Cat Blues Rescue Collegeville, PA | General Fund | $1,010 |
| ASU Foundation Tempe, AZ | General Fund | $1,000 |
| Pennridge School District Perkasi, PA | Scholarship Fund | $1,000 |
| Xavier College Preparatory Phoenix, AZ | Scholarship Fund | $1,000 |
| Friends of Eight Arizona PBS Phoenix, AZ | General Fund | $180 |
| Friends of Public Radio Arizona Tempe, AZ | General Fund | $180 |
| Access Eta Scottsdale, AZ | General Fund | $130 |
| Wikimedia Foundation San Francisco, CA | General Fund | $110 |
| NCC Philadelpia, PA | General Fund | $100 |
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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 | $16,746 | $1,002 | $6,252 | $4,710 | 9 | $4,710 | $2 | $933 |
| 2024 | $22,004 | $101,006 | $122,694 | $119,868 | 11 | $119,868 | $6 | $2,257 |
| 2023 | $43,687 | $60,008 | $68,491 | $65,246 | 11 | $65,246 | $8 | $2,422 |
| 2022 | $52,155 | $31,001 | $14,813 | $11,911 | 11 | $11,911 | — | $1,494 |
| 2021 | $36,213 | $42,317 | $18,317 | $15,934 | 12 | $15,934 | — | $1,821 |
| 2020 | $11,913 | $22,001 | $19,195 | $17,261 | 9 | — | — | $519 |
| 2019 | $9,102 | $3,002 | $7,864 | $6,220 | 6 | — | — | $506 |
Under IRS private-foundation payout rules, Bill and Dianne Mensch Foundation reported a distributable amount of $933 for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Bill and Dianne Mensch Foundation is led by William D. Mensch Jr., President & CEO on every filing since 2019; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
William D. Mensch Jr.
President & CEO
On filings since 2019
No compensation reported
Diane Mensch
Treasurer & Secretary
On filings since 2019
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 Bill and Dianne Mensch Foundation
How much does Bill and Dianne Mensch Foundation give each year?
Bill and Dianne Mensch Foundation gave $5K across 9 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $120K across 11 grants.
What is Bill and Dianne Mensch Foundation's typical grant size?
Bill and Dianne Mensch Foundation's median grant in 2025 was $180, and its average grant was $523, across 9 grants on its 2025 IRS Form 990-PF.
Where does Bill and Dianne Mensch Foundation give grants?
Bill and Dianne Mensch Foundation gives mostly in Arizona: 53% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was Pennsylvania (45%). The most frequent recipient cities were Phoenix, AZ (2 grants) and Tempe, AZ (2 grants).
Does Bill and Dianne Mensch Foundation give general operating support?
Yes: 78% of Bill and Dianne Mensch Foundation's 2025 grants with a stated purpose (7 of 9) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Bill and Dianne Mensch Foundation's largest grantees?
Bill and Dianne Mensch Foundation's largest 2025 grantees include Stray Cat Blues Rescue ($1,010), ASU Foundation ($1,000) and Pennridge School District ($1,000), according to its 2025 IRS Form 990-PF. Together they received 64% of its itemized 2025 grant dollars.
How large is Bill and Dianne Mensch Foundation?
Bill and Dianne Mensch Foundation reported $17K in total assets on its 2025 IRS Form 990-PF. It paid out $5K in qualifying distributions that year, against a required minimum of $933 (roughly 5% of its investment assets).
What is Bill and Dianne Mensch Foundation's EIN?
Bill and Dianne Mensch Foundation's EIN (Employer Identification Number) is 45-4015961. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS April 1, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS April 22, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS April 1, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS June 26, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS July 3, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS September 11, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 21, 2026)
- IRS filings on file for fiscal years 2019–2024
Live grants for the work Bill and Dianne Mensch Foundation funds
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