Data / Foundation grants / Mainwaring Family Foundation
Mainwaring Family Foundation: 10 grants to organizations, $196,538 (tax year ended December 2025)
Mainwaring Family Foundation, a private foundation in Wilmington, DE, paid 10 grants to organizations totaling $196,538 in its tax year ended December 2025, according to its Form 990-PF filed with the IRS on May 12, 2026. The largest was $65,000 to Helena Symphony in Helena, MT for unrestricted gift.
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- EIN
- 822289585
- Based in
- Wilmington, DE
- Assets
- $24,697,688
- Grants paid
- $196,538
- Tax year ended
- December 2025
Grants paid, tax year ended December 2025
From the Form 990-PF filed May 12, 2026, IRS object ID 202631329349102318. It reported $196,538 in grants paid; 10 grants to organizations are listed.
| Recipient | Location | Purpose | Cause | Amount | Source |
|---|---|---|---|---|---|
| Helena Symphony | Helena, MT | Unrestricted gift | $65,000 | apps.irs.gov | |
| Holter Museum of Art | Helena, MT | General purpose | Arts, culture and humanities | $45,000 | apps.irs.gov |
| American Prairie Foundation | Bozeman, MT | General purpose | Environment | $15,000 | apps.irs.gov |
| Prickly Pear Land Trust | Helena, MT | General purpose | Environment | $15,000 | apps.irs.gov |
| Helena Food Share | Helena, MT | General purpose | Food, agriculture and nutrition | $12,000 | apps.irs.gov |
| Montana Food Bank Network | Missoula, MT | General purpose | Food, agriculture and nutrition | $12,000 | apps.irs.gov |
| Glacier Two Medicine Alliance | East Glacier Park, MT | General purpose | Environment | $10,000 | apps.irs.gov |
| Planned Parenthood of Montana | Billings, MT | General purpose | $10,000 | apps.irs.gov | |
| Omerta Arts Syndicate | Helena, MT | General | Arts, culture and humanities | $7,538 | apps.irs.gov |
| H-Town Eagles Boxing Club | Helena, MT | General | Youth development | $5,000 | apps.irs.gov |
Grants paid, tax year ended December 2024
From the Form 990-PF filed May 5, 2025, IRS object ID 202541259349101074. It reported $178,112 in grants paid; 8 grants to organizations are listed.
| Recipient | Location | Purpose | Cause | Amount | Source |
|---|---|---|---|---|---|
| Helena Symphony | Helena, MT | Unrestricted gift | $65,000 | apps.irs.gov | |
| Holter Museum of Art | Helena, MT | General purpose | Arts, culture and humanities | $45,000 | apps.irs.gov |
| Helena Food Share | Helena, MT | General purpose | Food, agriculture and nutrition | $16,112 | apps.irs.gov |
| Montana Food Bank Network | Missoula, MT | General purpose | Food, agriculture and nutrition | $12,000 | apps.irs.gov |
| American Prairie Foundation | Bozeman, MT | General purpose | Environment | $10,000 | apps.irs.gov |
| Glacier Two Medicine Alliance | East Glacier Park, MT | General purpose | Environment | $10,000 | apps.irs.gov |
| Planned Parenthood of Montana | Billings, MT | General purpose | $10,000 | apps.irs.gov | |
| Prickly Pear Land Trust | Helena, MT | General purpose | Environment | $10,000 | apps.irs.gov |
Causes funded
From grants whose recipient has a cause.
| Cause | Granted |
|---|---|
| Arts, culture and humanities | $97,538 |
| Environment | $70,000 |
| Food, agriculture and nutrition | $52,112 |
| Youth development | $5,000 |
States funded
| Recipient state | Granted |
|---|---|
| Montana | $374,650 |
Also on SpecStream
- Who funds arts, culture and humanities in Montana
- Who funds environment in Montana
- Who funds food, agriculture and nutrition in Montana
- Who funds youth development in Montana
Updated May 12, 2026. Read from IRS Form 990-PF e-file data. Public domain (U.S. government work). Grants are as each foundation reported them to the IRS on its Form 990-PF. Grants to individuals are left out. A grant has a cause only where the recipient's name and city match one organization in the IRS Business Master File, and the cause is that organization's NTEE major group. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.