The Frank B Mazer Foundation
Historical FunderCambridge, Massachusetts · EIN 04-6875253 · Private foundation
Half of its grants to organizations were between $240 and $500.
How to apply
The foundation filed the following application information (Form 990-PF Part XV, tax year 2024):
| Contact | FRANK B MAZER |
|---|---|
| Address | 10 SAVILLE STREET, CAMBRIDGE MA 02138 |
| Phone | 6178669741 |
| Form and materials | NO RESTRICTIONS ON FORMAT |
| Deadlines | NONE |
| Restrictions | NONE |
Copied as filed. Deadlines on a tax return describe the foundation's usual process; they are not confirmation of a current open cycle.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
75% of grants went outside Massachusetts.
Grants paid in tax year 2024
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| WGBH Educational Foundation | Boston, MA | Educational purposes | $1,000 |
| USA for UNHCR | Washington, DC | Refugee Assistance;UN Refugee Agency | $500 |
| Islesboro Historical Society | Islesboro, ME | Educational Purposes | $400 |
| AmerSocietyPreventionCrueltyAnimals | New York, NY | Prevention of Cruelty to Animals | $240 |
The return also lists 1 grant to individuals ($650). We do not publish the names of individual recipients.
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2024 | $2,790 | 5 |
| 2023 | $7,500 | 3 |
| 2022 | $15,000 | 5 |
Sources
- IRS Form 990-PF, tax year 2024, filed Jul 19, 2026 - IRS e-file batch, object ID 202601999349100500
- IRS Tax Exempt Organization Search for EIN 04-6875253
- Profile updated Nov 7, 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.