Marinus and Minna B Koster Foundation Inc
Historical FunderPotomac Falls, Virginia · EIN 27-1533411 · Private foundation · Website
Half of its grants to organizations were between $10,000 and $15,000.
How to apply
The foundation filed the following application information (Form 990-PF Part XV, tax year 2024):
| Contact | PNC PRIVATE FOUNDATION MANAGEMENT S |
|---|---|
| Address | TOWER AT PNC PLAZA 300 FIFTH AVE, PITTSBURGH PA 15222 |
| Phone | 4127622083 |
| ROBERT.TRINKLE@PNC.COM | |
| Form and materials | APPLICATION INSTRUCTIONS ARE AVAILABLE ON THE FOUNDATION'S WEBSITE. |
| Deadlines | APPLICATIONS MUST BE RECEIVED BY MARCH 15TH OF EACH FISCAL YEAR ENDING JUNE 30TH. |
| Restrictions | AWARDS ARE LIMITED TO THE FOUNDATION'S MISSION STATEMENT: PROVIDING SCHOLARSHIPS AND FINANCIAL ASSISTANCE TO MUSICALLY TALENTED CHILDREN AND YOUNG ADULTS IN THEIR MUSICAL PURSUITS; PROMOTING THE PRESERVATION OF YIDDISH CULTURE, INCLUDING, BUT NOT LIMITED TO, THE YIDDISH LANGUAGE, THEATER, AND SCHOLARSHIP; ASSISTING IMMIGRANTS TO THE UNITED STATES, ESPECIALLY JEWISH IMMIGRANTS, BY PROVIDING HOUSING, LANGUAGE, JOB TRAINING AND OTHER SERVICES TO THEM. |
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
88% of grants went outside Virginia.
Grants paid in tax year 2024
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Edlavitch Jewish Community Center of DC | Washington, DC | Theater j's yiddish theater lab | $30,000 |
| DC Youth Orchestra Program | Washington, DC | 2025-2026 talent development program | $20,000 |
| Pennsylvania Women Work | Pittsburgh, PA | Refugee & immigrant services for employment | $18,000 |
| Sitar Arts Center | Washington, DC | 2025-2026 instrumental music academy | $18,000 |
| University of Maryland College Park Foundation | College Park, MD | National orchestral institute +festival scholarships | $15,000 |
| Center for Traditional Music and Dance | New York, NY | Yiddish new york | $13,000 |
| American Youth Philharmonic Orchestras | Annandale, VA | 2025-2026 tuition assistance program | $12,000 |
| American University | Washington, DC | Summer study grants for music majors- koster fdn | $10,000 |
| Avodah the Jewish Service Corps | New York, NY | Enhancing the capacity of immigration nonprofits | $10,000 |
| End Sijs Backlog Coalition | Washington, DC | National immigration project-national lawyers guild - immigrant youth program | $10,000 |
| Strathmore Hall Foundation | North Bethesda, MD | East county strings (ecs) | $10,000 |
| Strathmore Hall Foundation | North Bethesda, MD | Strathmore youth chorus | $10,000 |
| The Forward Association | New York, NY | The forverts | $10,000 |
| The Workers Circle | New York, NY | Yiddish today and forever | $10,000 |
| Di Goldene Keyt Ltd | New York, NY | Birth and rebirth of great yiddish choral music | $8,000 |
| Edu-Futuro | Arlington, VA | Workforce development services for immigrant families | $8,000 |
| In Geveb Inc | New York, NY | In geveb: a journal of yiddish studies | $8,000 |
| Levine Music Inc | Washington, DC | Enriched musical learning opportunities for youth | $5,000 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2024 | $225,000 | 18 |
| 2023 | $205,000 | 19 |
| 2022 | $185,000 | 17 |
Sources
- IRS Form 990-PF, tax year 2024, filed May 13, 2026 - IRS e-file batch, object ID 202641329349104594
- IRS Tax Exempt Organization Search for EIN 27-1533411
- 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.