Foundation directory
The Diomedes Foundation C/o John W Boynton IV Firehouse Capital Grants
Private foundation · EIN 46-1451480 · IRS 990-PF filings through tax year 2025
- Total grants paid
- $2.6M
- Grants reported
- 32
- Median grant
- $15.3K
- Future commitments
- None reported
Giving by tax year
| Tax year | Grants paid | Amount |
|---|---|---|
| 2025 | 18 | $2.3M |
| 2024 | 14 | $360.5K |
Where The Diomedes Foundation C/o John W Boynton IV Firehouse Capital gives
States of grant recipients reported on the foundation's 990-PF filings, by dollars received.
Largest reported grants
The biggest individual grants on file, as reported by the foundation to the IRS.
| Recipient | Location | Purpose | Tax year | Amount |
|---|---|---|---|---|
| BOYNTON FMAILY FUND - FIDELITY CHARITABLE | CINCINNATI, OH | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $1.5M |
| HARVARD UNIVERSITY | CAMBRIDGE, MA | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $292K |
| EMERSON HEALTH | CONCORD, MA | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $130.4K |
| EMERSON HEALTH FOUNDATION | CONCORD, MA | CHARITABLE | 2024 | $115K |
| MIDDLESEX SCHOOL | CONCORD, MA | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $95K |
| RENAISSANCE CHARITABLE FOUNDATION INC - THEODORA PARK FUND | INDIANAPOLIS, IN | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $50K |
| NORTHEAST HARBOR SAILING SCHOOL | NORTHEAST HARBOR, ME | CHARITABLE | 2024 | $50K |
| TRUSTEES OF HAMILTON COLLEGE | CLINTON, NY | CHARITABLE | 2024 | $35K |
| CONCORD CARLISLE FOUNDATION | CONCORD, MA | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $26.1K |
| CONCORD250 | CONCORD, MA | CHARITABLE | 2024 | $25K |
| ISLAND HOUSING TRUST | VINEYARD HAVEN, MA | CHARITABLE | 2024 | $25K |
| HARVARD VARSITY CLUB INC | BOSTON, MA | CHARITABLE | 2024 | $25K |
| ISLAND HOUSING TRUST | MOUNT DESERT, ME | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $25K |
| CALIFORNIA COMMUNITY FOUNDATION | LOS ANGELES, CA | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $22.5K |
| CONCORD FREE PUBLIC LIBRARY CORP | CONCORD, MA | CHARITABLE | 2024 | $20K |
| CALIFORNIA COMMUNITY FOUNDATION | LOS ANGELES, CA | CHARITABLE | 2024 | $15.5K |
| MOUNT DESERT NURSING ASSOCIATION | NORTHEAST HARBOR, ME | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $15K |
| THE UMBRELLA ARTS CENTER | CONCORD, MA | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $15K |
| THE TRUSTEES OF HAMILTON COLLEGE | CLINTON, NY | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $13K |
| AXIUM EDUCATION | ZITHULELE | CHARITABLE | 2024 | $10K |
| UBUNTU GLOBAL CONNECTIONS | CONCORD, MA | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $10K |
| ST PAUL'S SCHOOL | CONCORD, NH | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $10K |
| THOREAU'S BACKYARD | CONCORD, MA | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $10K |
| THE CONCORD BRIDGE | CONCORD, MA | TO FUND THE RECIPIENT'S OPERATING BUDGET | 2025 | $10K |
| CONCORD CENTER FOR THE VISUAL ARTS | CONCORD, MA | CHARITABLE | 2024 | $10K |
How to apply
This foundation reports on its 990-PF that it only makes contributions to preselected organizations and does not accept unsolicited applications.
About this data
Figures are aggregated from The Diomedes Foundation C/o John W Boynton IV Firehouse Capital's IRS Form 990-PF electronic filings (2 filings on file, most recent tax year 2025). Totals reflect grants the foundation reported as paid, and can lag the current year because foundations file annually and often on extension. Source: IRS 990-PF e-file archive.