Mackworth-Mendoza Foundation
Invitation OnlyKey Biscayne, Florida · EIN 93-1296528 · Private foundation
Grants paid (2025)$580K
Organizations funded7
Typical grant$5,000
Total assets$1M
Half of its grants to organizations were between $2,500 and $12,500.
From the return
How to apply
On its return for tax year 2025 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
85% of grants went outside Florida.
Grants paid in tax year 2025
| Recipient | Location | 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 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $580,000 | 7 |
| 2024 | $113,000 | 8 |
| 2023 | $104,250 | 10 |
Sources
- IRS Form 990-PF, tax year 2025, filed May 14, 2026 - IRS e-file batch, object ID 202641349349103109
- IRS Tax Exempt Organization Search for EIN 93-1296528
- Profile updated Nov 6, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.