Mackworth-Mendoza Foundation
Mackworth-Mendoza Foundation is a private foundation, based in Key Biscayne, FL. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $1.0M in total assets. In 2025, it awarded 7 grants totaling $580K. Net investment income was $50K.
Mackworth-Mendoza Foundation at a glance
In short: Mackworth-Mendoza Foundation gave $580K across 7 grants in 2025 (avg $83K), mostly in Oregon. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $580,000
- +413.3% vs 2024
- Grants made (2025)
- 7
- -12.5% vs 2024
- Average grant
- $82,857
- +486.6% vs 2024
- Median grant
- $5,000
- Total assets
- $1,043,870
- -21.7% vs 2024
- Primary geography
- Oregon (98% 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 Mackworth-Mendoza Foundation funds
How this funder distributes its grants
Top Recipients
Top 7 recipients in 2025
The largest 2025 recipient was Literary Arts ($550K). Together the top 7 received $580K.
Grant Size Distribution
40 grants across all recorded years
The most common grant size was under $50K: 37 grants of 40 (93%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 7 itemized grants.
Cities
How Mackworth-Mendoza Foundation gives
- Giving held roughly steady from 2022 to 2025 (+4%). 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 $57K (2021) to $580K (2025). In 2025 it made 7 grants totaling $580K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Literary Arts Portland, OR | Program Activities | $550,000 |
| The International School Portland, OR | Program Activities | $12,500 |
| Feeding South Florida Pembroke Park, FL | Program Sctivities | $5,000 |
| Oregon Food Bank Portland, OR | Program Activities | $5,000 |
| American Diabetes Assoc Arlington, VA | Program Activities | $2,500 |
| Heal Palestine Kent, OH | Program Activities | $2,500 |
| Meca for Peace Berkeley, CA | Program Activities | $2,500 |
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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 | $1,043,870 | $53,391 | $584,700 | $580,000 | 7 | $580,920 | $50,387 | $57,833 |
| 2024 | $1,333,117 | $56,629 | $119,370 | $113,000 | 8 | $114,750 | $52,807 | $66,413 |
| 2023 | $1,393,682 | $57,967 | $106,917 | $104,250 | 10 | $104,250 | $55,740 | $65,010 |
| 2022 | $1,347,652 | $580,255 | $560,006 | $556,000 | 8 | $556,815 | $29,716 | $66,851 |
| 2021 | $1,453,730 | $26,212 | $63,476 | $56,500 | 7 | $57,899 | $20,635 | $70,963 |
| 2020 | $1,438,141 | $719,528 | $74,411 | $72,000 | 10 | — | $141,239 | $34,723 |
Under IRS private-foundation payout rules, Mackworth-Mendoza Foundation reported a distributable amount of $58K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Mackworth-Mendoza Foundation is led by Hugh F. Mackworth, President on every filing since 2020; none of the 3 officers listed in 2025 report compensation.
Officers on the 2025 filing
Hugh F. Mackworth
President
On filings since 2020
1 hr/week
No compensation reported
Josie G. Mendoza
Secretary
On filings since 2020
1 hr/week
No compensation reported
Alexander Mackworth
Member
On filings since 2024
1 hr/week
No compensation reported
Former officers (1)
- Former: Donald L. Krahmer Jr. (2020–2023) — Director
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 Mackworth-Mendoza Foundation
How much does Mackworth-Mendoza Foundation give each year?
Mackworth-Mendoza Foundation gave $580K across 7 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $113K across 8 grants.
What is Mackworth-Mendoza Foundation's typical grant size?
Mackworth-Mendoza Foundation's median grant in 2025 was $5,000, and its average grant was $82,857, across 7 grants on its 2025 IRS Form 990-PF.
Where does Mackworth-Mendoza Foundation give grants?
Mackworth-Mendoza Foundation gives mostly in Oregon: 98% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Portland, OR (3 grants).
Does Mackworth-Mendoza Foundation give general operating support?
Not in 2025: none of the 7 grants with a stated purpose on Mackworth-Mendoza Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Program Activities" (6 grants).
Who are Mackworth-Mendoza Foundation's largest grantees?
Mackworth-Mendoza Foundation's largest 2025 grantees include Literary Arts ($550,000), The International School ($12,500) and Feeding South Florida ($5,000), according to its 2025 IRS Form 990-PF. Together they received 98% of its itemized 2025 grant dollars.
How large is Mackworth-Mendoza Foundation?
Mackworth-Mendoza Foundation reported $1.0M in total assets on its 2025 IRS Form 990-PF. It paid out $581K in qualifying distributions that year, against a required minimum of $58K (roughly 5% of its investment assets).
What is Mackworth-Mendoza Foundation's EIN?
Mackworth-Mendoza Foundation's EIN (Employer Identification Number) is 93-1296528. 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
(2)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 14, 2026)
- IRS filings on file for fiscal years 2020–2024
Live grants for the work Mackworth-Mendoza Foundation funds
Philanthropy, Voluntarism & Grantmaking Open opportunities, soonest deadline first.
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Browse active grant opportunities in Mackworth-Mendoza Foundation's focus areas in our free grants database
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