Mattaini Family Foundation
Historical FunderBellevue, Washington · EIN 91-1938648 · Private foundation
Half of its grants to organizations were between $5,000 and $100,000.
How to apply
The foundation filed the following application information (Form 990-PF Part XV, tax year 2025):
| Contact | BARRY MATTAINI |
|---|---|
| Address | 91 CASCADE KEY, BELLEVUE WA 98006 |
| Phone | 2069206657 |
| Form and materials | LETTER WILL BE ACCEPTED DETAILNG CHARITABLE WORK OF ORGANIZATION. |
| Deadlines | 0630 |
| Restrictions | THE FOUNDATION LIMITS BENEFITS TO BENEFICIARES THAT ARE PUBLIC CHARITIES WHICH HAVE RECEIVED A LETTER OF EXEMPTION UNDER SECTIOS 501(C)(3) OF THE CODE. THE FOUNDATION WILL CONTEMPLATE GRANTS TO OTHER ORGANIZATIONS & INDIVIDUALS UPON IMPLEMENTATION OF EXPENDITURE RESPONSIBILITY. |
Copied as filed. Deadlines on a tax return describe the foundation's usual process; they are not confirmation of a current open cycle.
Where it gives
33% of grants went outside Washington.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Virginia Mason Foundation | Seattle, WA | Same | $300,000 |
| St Judes Research Hospital | Memphis, TN | Same | $100,000 |
| Union Gospel Mission | Seattle, WA | Same | $36,000 |
| Salvation Army | Seattle, WA | Same | $35,000 |
| Eisenhower Medical Foundation | Rancho Mirage, CA | Same | $5,000 |
| Uw Foundation | Seattle, WA | Same | $2,000 |
The return also lists 6 grants to individuals ($280,000). We do not publish the names of individual recipients.
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $758,000 | 12 |
| 2024 | $119,500 | 13 |
| 2023 | $108,500 | 13 |
Sources
- IRS Form 990-PF, tax year 2025, filed May 15, 2026 - IRS e-file batch, object ID 202621359349101782
- IRS Tax Exempt Organization Search for EIN 91-1938648
- 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.