Cornerstone Foundation Inc
Invitation OnlyWashington, District of Columbia · EIN 11-3737220 · Private foundation
Half of its grants to organizations were between $80,000 and $240,000.
How to apply
On its return for tax year 2024 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
50% of grants went outside District of Columbia.
Grants paid in tax year 2024
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Environmental Defense Fund | Washington, DC | Support charitable activities | $350,000 |
| Island Institute | Rockland, MD | Support charitable activities | $340,000 |
| Teach for America | Washington, DC | Support charitable activities | $240,000 |
| House of Ruth | Washington, DC | Support charitable activities | $240,000 |
| Planned Parenthood Federation of America Inc | New York, NY | Support charitable activities | $200,000 |
| Rock the Vote | Washington, DC | Support charitable activities | $160,000 |
| The Posse Foundation | Washington, DC | Support charitable activities | $150,000 |
| Children's Literacy Initiative | Philadelphia, PA | Support charitable activities | $150,000 |
| William J Brennan Jr Center for Justice Inc | New York, NY | Support charitable activities | $125,000 |
| Thurgood Marshall College Fund | Washington, DC | Support charitable activities | $80,000 |
| The Trevor Project | West Hollywood, CA | Support charitable activities | $75,000 |
| The Basic Fund | Oakland, CA | Support charitable activities | $60,000 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2024 | $2,170,000 | 12 |
| 2023 | $1,865,000 | 11 |
Sources
- IRS Form 990-PF, tax year 2024, filed Jul 31, 2025 - IRS e-file batch, object ID 202512129349101211
- IRS Tax Exempt Organization Search for EIN 11-3737220
- 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.