Private foundation · EIN 82-2289585
Mainwaring Family Foundation
Wilmington, DE
Mainwaring Family Foundation is a private foundation based in Wilmington, DE. On its Form 990-PF for tax year 2025, it reported $197K in grants and contributions paid across 10 grants, with $24.7M in assets (fair market value). It reports that it gives only to preselected charitable organizations and does not accept unsolicited requests for funds. Its largest grants went to Helena Symphony, Holter Museum of Art and American Prairie Foundation.
How to request funding
Gives only to preselected organizations. On its Form 990-PF, this foundation checked the box saying it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Relationships and invitations usually come first.
As reported on the foundation's Form 990-PF for tax year 2025. Requirements change; confirm with the foundation before applying.
Largest grants, tax year 2025
Historical data · not a prediction| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Helena Symphony | Helena, MT | Unrestricted Gift | $65,000 |
| Holter Museum of Art | Helena, MT | General Purpose | $45,000 |
| American Prairie Foundation | Bozeman, MT | General Purpose | $15,000 |
| Prickly Pear Land Trust | Helena, MT | General Purpose | $15,000 |
| Helena Food Share | Helena, MT | General Purpose | $12,000 |
| Montana Food Bank Network | Missoula, MT | General Purpose | $12,000 |
| Glacier Two Medicine Alliance | East Glacier Park, MT | General Purpose | $10,000 |
| Planned Parenthood of Montana | Billings, MT | General Purpose | $10,000 |
| Omerta Arts Syndicate | Helena, MT | General | $7,538 |
| H-Town Eagles Boxing Club | Helena, MT | General | $5,000 |
Names and purposes as reported to the IRS.
Where its grants went
Quick answers
Does Mainwaring Family Foundation accept grant applications?
According to its Form 990-PF for tax year 2025, Mainwaring Family Foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
How much does Mainwaring Family Foundation give each year?
For tax year 2025, it reported $196,538 in grants and contributions paid (10 grants). Giving can change from year to year.
What organizations has Mainwaring Family Foundation funded?
Its largest grants in tax year 2025 went to Helena Symphony (MT), $65K, Holter Museum of Art (MT), $45K, American Prairie Foundation (MT), $15K, Prickly Pear Land Trust (MT), $15K and Helena Food Share (MT), $12K.