Mack Foundation
Invitation OnlyBainbridge Island, Washington · EIN 46-1580680 · Private foundation
Grants paid (2025)$314K
Organizations funded9
Typical grant$25,000
Total assets$2.7M
Half of its grants to organizations were between $10,000 and $50,000.
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
44% of grants went outside Washington.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Norwich University | Northfield, VT | General support | $115,000 |
| Christian Brothers Foundation | New Orleans, LA | General support | $50,000 |
| Music Center of the Northwest | Seattle, WA | General support | $50,000 |
| One Call for All | Bainbridge, WA | General support | $41,000 |
| Rhf Foundation | Fayatteville, NC | General support | $25,000 |
| Helpline House | Bainbridge Island, WA | General support | $10,000 |
| The UCLA Foundation | Los Angeles, CA | General support | $10,000 |
| St Cecilia Parish | Bainbridge Island, WA | General support | $10,000 |
| Seattle Union Mission | Kent, WA | General support | $3,000 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $314,000 | 9 |
| 2024 | $232,500 | 5 |
| 2023 | $135,000 | 5 |
Sources
- IRS Form 990-PF, tax year 2025, filed Mar 27, 2026 - IRS e-file batch, object ID 202600869349100325
- IRS Tax Exempt Organization Search for EIN 46-1580680
- 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.