Macklanburg Foundation
Invitation OnlyColumbia, Missouri · EIN 43-6411670 · Private foundation
Half of its grants to organizations were between $3,500 and $10,000.
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
100% of grants went outside Missouri.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Oklahoma State Parks Foundation | Oklahoma City, OK | Charitable contribution | $20,000 |
| Boston Ave United Methodist Church | Tulsa, OK | Charitable contribution | $15,000 |
| Tulsa Literary Coalition | Tulsa, OK | Charitable contribution | $12,000 |
| Red Cross Oklahoma County Chapter | Oklahoma City, OK | Charitable contribution | $10,000 |
| Oklahoma Humanities Council | Oklahoma City, OK | Charitable contribution | $10,000 |
| Oklahoma Art Institute Quartz Mount | Oklahoma City, OK | Charitable contribution | $10,000 |
| Wesley Methodist Church | Oklahoma City, OK | Charitable contribution | $8,000 |
| Teem of Oklahoma City | Oklahoma City, OK | Charitable contribution | $5,000 |
| City Care Okc | Oklahoma City, OK | Charitable contribution | $5,000 |
| The Spero Project | Oklahoma City, OK | Charitable contribution | $5,000 |
| Rotary Club of Grove Oklahoma | Grove, OK | Charitable contribution | $5,000 |
| Ottawa County Historical Society | Miami, OK | Charitable contribution | $4,500 |
| Tulsa Garden Center | Tulsa, OK | Charitable contribution | $3,500 |
| The Opportunity Project | Tulsa, OK | Charitable contribution | $3,000 |
| Oklahoma Arts Council | Oklahoma City, OK | Charitable contribution | $3,000 |
| Six Twelve Community Center | Oklahoma City, OK | Charitable contribution | $1,500 |
| Tulsa Theatre Works | Tulsa, OK | Charitable contribution | $1,500 |
The return also lists 12 grants to individuals ($179,500). We do not publish the names of individual recipients.
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $301,500 | 29 |
| 2024 | $198,000 | 25 |
| 2023 | $187,500 | 26 |
Sources
- IRS Form 990-PF, tax year 2025, filed May 4, 2026 - IRS e-file batch, object ID 202631249349102358
- IRS Tax Exempt Organization Search for EIN 43-6411670
- Profile updated Nov 5, 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.