The M M Diefendorf Family Foundation Inc
The M M Diefendorf Family Foundation Inc is a private foundation, based in Wilmington, DE. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $90K in total assets. In 2025, it awarded 1 grant totaling $71K. Net investment income was $4K.
The M M Diefendorf Family Foundation Inc at a glance
In short: The M M Diefendorf Family Foundation Inc gave $71K across 1 grant in 2025 (avg $71K). Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $71,200
- +493.3% vs 2024
- Grants made (2025)
- 1
- +0.0% vs 2024
- Average grant
- $71,200
- +493.3% vs 2024
- Median grant
- $71,200
- Total assets
- $90,048
- -12.5% vs 2024
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who The M M Diefendorf Family Foundation Inc funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was Wonder Sprout Academy ($71K).
Grant Size Distribution
7 grants across all recorded years
The most common grant size was under $50K: 6 grants of 7 (86%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Cities
How The M M Diefendorf Family Foundation Inc gives
- Giving grew 578% from 2022 to 2025. Method
- In 2025 it paid out well above 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 2020 to 2025, annual grant giving ranged from $1K (2020) to $71K (2025). In 2025 it made 1 grant totaling $71K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Wonder Sprout Academy | Expenditure Responsibility Grant | $71,200 |
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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 | $90,048 | $66,819 | $79,646 | $71,200 | 1 | $79,621 | $3,600 | $5,847 |
| 2024 | $102,875 | $57,135 | $14,496 | $12,000 | 1 | $14,496 | $1,135 | $3,029 |
| 2023 | $60,236 | $96,103 | $57,136 | $54,800 | 3 | $57,136 | $103 | $1,474 |
| 2022 | $21,269 | $11,027 | $12,859 | $10,500 | 1 | $12,859 | $27 | $1,209 |
| 2021 | $23,101 | $6,002 | $6,722 | $4,360 | 1 | $6,722 | $2 | $1,210 |
| 2020 | $23,821 | $7,502 | $3,350 | $1,000 | 1 | — | $2 | $1,111 |
Under IRS private-foundation payout rules, The M M Diefendorf Family Foundation Inc reported a distributable amount of $6K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The M M Diefendorf Family Foundation Inc is led by Monroe M Diefendorf Jr., President, Director & Secretary on every filing since 2020; none of the 6 officers listed in 2025 report compensation.
Officers on the 2025 filing
Monroe M Diefendorf Jr.
President, Director & Secretary
On filings since 2020
3 hrs/week
No compensation reported
Christine E Diefendorf
Director & Vice President
On filings since 2020
1 hr/week
No compensation reported
Ashley E Howe
Vice President
On filings since 2020
1 hr/week
No compensation reported
Emily T Higgs
Vice President
On filings since 2020
1 hr/week
No compensation reported
Jennie M Donovan
Vice President
On filings since 2020
1 hr/week
No compensation reported
Whitney E Baran
Vice President
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2025. "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 The M M Diefendorf Family Foundation Inc
How much does The M M Diefendorf Family Foundation Inc give each year?
The M M Diefendorf Family Foundation Inc gave $71K across 1 grant in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $12K across 1 grant.
How large is The M M Diefendorf Family Foundation Inc?
The M M Diefendorf Family Foundation Inc reported $90K in total assets on its 2025 IRS Form 990-PF. It paid out $80K in qualifying distributions that year, against a required minimum of $6K (roughly 5% of its investment assets).
Where does The M M Diefendorf Family Foundation Inc operate?
The M M Diefendorf Family Foundation Inc has awarded grants in Missouri, New York, Texas.
What is The M M Diefendorf Family Foundation Inc's EIN?
The M M Diefendorf Family Foundation Inc's EIN (Employer Identification Number) is 20-0495829. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS June 16, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS June 7, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS April 11, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS April 18, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS September 4, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS April 3, 2026)
- IRS filings on file for fiscal years 2020–2025
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