The Rock Oak Foundation
Invitation OnlyGreenville, Delaware · EIN 85-3746433 · Private foundation
Grants paid (2025)$241K
Organizations funded20
Typical grant$10,000
Total assets$6.6M
Half of its grants to organizations were between $5,000 and $10,000.
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
75% of grants went outside Delaware.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Westtown | West Chester, PA | General purpose | $35,000 |
| Met Museum | New York, NY | General purpose | $35,000 |
| Kenyon Collegewoollam House | Gambier, OH | General purpose | $20,000 |
| Conservation International | Arlington, VA | General purpose | $20,000 |
| Brandywine River Museum | Chadds Ford, PA | General purpose | $15,000 |
| Whyy | Greencastle, DE | General purpose | $10,000 |
| Sweet Briar College | Sweet Briar, VA | General purpose | $10,000 |
| Planned Parenthood of Delaware | Wilmington, DE | General purpose | $10,000 |
| Planned Parenthood of Southern Pa | Philadelphia, PA | General purpose | $10,000 |
| Colorado Snowsports Museum - Vail 10Th Mountain Division | Vail, CO | General purpose | $10,000 |
| Kennett Area Community Service (Kacs) | Kennett Square, PA | General purpose | $10,000 |
| Delaware Art Museum | Wilmington, DE | General purpose | $10,000 |
| Wrti | Philadelphia, PA | General purpose | $10,000 |
| The American Cancer Society | Hagerstown, MD | General purpose | $7,500 |
| Ifaw | Washington, DC | General purpose | $6,000 |
| American Museum of Natural History | New York, NY | General purpose | $5,000 |
| New Bolton Center | Philadelphia, PA | General purpose | $5,000 |
| Tri-State Bird Rescue | Newark, DE | General purpose | $5,000 |
| Tower Hill School | Wilmington, DE | General purpose | $5,000 |
| Stroud Water | Avondale, PA | General purpose | $2,500 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $241,000 | 20 |
| 2024 | $170,500 | 14 |
| 2023 | $162,500 | 10 |
Sources
- IRS Form 990-PF, tax year 2025, filed May 15, 2026 - IRS e-file batch, object ID 202631359349103688
- IRS Tax Exempt Organization Search for EIN 85-3746433
- Profile updated Nov 5, 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.