Bill and Dianne Mensch Foundation

Private foundation · Grantmaker Mesa, AZ EIN: 45-4015961

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.

Key facts about Bill and Dianne Mensch Foundation

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.

EIN
45-4015961
Latest 990 filing
Form 990-PF, 2025
Annual giving (2025)
$4,710
Grants made (2025)
9
Average grant
$523
Median grant
$180
Total assets
$16,746
Primary geography
Arizona (53% of itemized 2025 grant dollars)

Data from IRS Form 990-PF, 2025; updated September 2026.

Financial Overview

From 2025 IRS Form 990-PF · View filing

Total Assets

$17K

-23.9% YoY

Annual Giving

$5K

-96.1% YoY

Grant Count

9

-18.2% YoY

Avg Grant Size

$523.333

-95.2% YoY

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.

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.

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Geographic Focus

Where this funder awards grants

Grant Distribution by State

8states

Share of 2025 grant dollars across all 9 itemized grants.

Cities

PhoenixTempePhiladelphiaSan FranciscoTucsonPerkasieBlufftonPerkasiPhiladelpiaNew YorkWest ChesterChicagoCollegevilleEaganParadise ValleyPiscatawayScottsdale

Giving Over Time

Total grant dollars and number of grants per year

$0$50K$100K$150K6 grants2019 9 grants2020 12 grants2021 11 grants2022 11 grants2023 11 grants2024 9 grants2025

From 2019 to 2025, annual grant giving ranged from $5K (2025) to $120K (2024). In 2025 it made 9 grants totaling $5K.

Grant Insights

How this funder distributes its grants

Top Recipients

Top 9 recipients in 2025

Stray Cat Blues Rescue: $1KStray Cat Blues Rescue$1KASU Foundation: $1KASU Foundation$1KPennridge School District: $1KPennridge School District$1KXavier College Preparatory: $1KXavier College Preparatory$1KFriends of Eight Arizona PBS: $180Friends of Eight Arizona PBS$180Friends of Public Radio Arizona: $180Friends of Public RadioArizona$180Access Eta: $130Access Eta$130Wikimedia Foundation: $110Wikimedia Foundation$110NCC: $100NCC$100

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

52<$50K1$50–100K1$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 52 grants of 54 (96%).

Giving History

Grant recipients and amounts by year

RecipientPurposeAmount
Stray Cat Blues Rescue Collegeville, PAGeneral Fund$1,010
ASU Foundation Tempe, AZGeneral Fund$1,000
Pennridge School District Perkasi, PAScholarship Fund$1,000
Xavier College Preparatory Phoenix, AZScholarship Fund$1,000
Friends of Eight Arizona PBS Phoenix, AZGeneral Fund$180
Friends of Public Radio Arizona Tempe, AZGeneral Fund$180
Access Eta Scottsdale, AZGeneral Fund$130
Wikimedia Foundation San Francisco, CAGeneral Fund$110
NCC Philadelpia, PAGeneral Fund$100

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$50K$100K$150K2019 2020 2021 2022 2023 2024 2025
Metric202520242023
Total Assets$16,746$22,004$43,687
Revenue$1,002$101,006$60,008
Expenses$6,252$122,694$68,491
Qualifying Distributions$4,710$119,868$65,246
Net Investment Income$2$6$8
Distributable Amount$933$2,257$2,422

Data update history

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2019 (received by the IRS April 1, 2020)
  2. Updated Form 990-PF for fiscal year 2020 (received by the IRS April 22, 2021)
  3. Updated Form 990-PF for fiscal year 2021 (received by the IRS April 1, 2022)
  4. Updated Form 990-PF for fiscal year 2022 (received by the IRS June 26, 2023)
  5. Updated Form 990-PF for fiscal year 2023 (received by the IRS July 3, 2024)
  6. Updated Form 990-PF for fiscal year 2024 (received by the IRS September 11, 2025)
  7. Added Form 990-PF for fiscal year 2025 (received by the IRS May 21, 2026)
  8. IRS filings on file for fiscal years 2019–2024

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.

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