· Private foundation
The Rock Oak Foundation
Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2021–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k7 grants · $36k
- $10k–50k13 grants · $205k
| Recipient | Amount |
|---|---|
| MET MUSEUM | $35,000 |
| WESTTOWN | $35,000 |
| KENYON COLLEGEWOOLLAM HOUSE | $20,000 |
| CONSERVATION INTERNATIONAL | $20,000 |
| BRANDYWINE RIVER MUSEUM | $15,000 |
| PLANNED PARENTHOOD OF DELAWARE | $10,000 |
| COLORADO SNOWSPORTS MUSEUM - VAIL 10TH MOUNTAIN DIVISION | $10,000 |
| WHYY | $10,000 |
| KENNETT AREA COMMUNITY SERVICE (KACS) | $10,000 |
| DELAWARE ART MUSEUM | $10,000 |
| SWEET BRIAR COLLEGE | $10,000 |
| PLANNED PARENTHOOD OF SOUTHERN PA | $10,000 |
| WRTI | $10,000 |
| THE AMERICAN CANCER SOCIETY | $7,500 |
| IFAW | $6,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your human-services grants (FY24–24, $10k) land where the poverty rate runs at 6%, against an area that typically sits at 9%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +24% since the first grant, against 0% for the ones you funded once.
9 repeat relationships — 5 still active in FY2025, 4 since wound down; 15 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 23% of grant dollars renewed an existing relationship; $186k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- DADELAWARE ART MUSEUM INC3× · 2023–2025 · $45k · revenue +24%
- PPPLANNED PARENTHOOD OF DELAWARE INC2× · 2024–2025 · $30k · revenue +38%
- BCBrandywine Conservancy & Museum of Art2× · 2022–2024 · $22k · revenue +65%
Funded once
- NMNANTUCKET MARIA MITCHELL ASSOCIATION INgraduatedone grant, 2023 · $25k · revenue +38%
- PCPHILANDER CHASE CONSERVANCYgraduatedone grant, 2023 · $20k · revenue +42%
- LHLENOX HILL HOSPITAL IN HONOR OF DR LON WEINERone grant, 2024 · $20k
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
The museum is an educational corporation formed to ignite a life-long passion for exploring, discovering, and valuing nature and science.
The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…
To preserve the unique character and natural resources of harvard.
Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…
See schedule o.we are inspired by the ideals of our founder who, in 1896, emphasized respect for all people and ideas, who honored knowledge with practice, progress and the common good. our historical commitment to experiential learning…
The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…
Founded in 1877, american humane association, dba american humane society (american humane) is committed to ensuring the safety, welfare and well-being of animals. our leadership programs are first to serve in promoting and nurturing the…
Wilson college empowers students to be confident and critical thinkers, creative visionaries, effective communicators, honorable leaders, and agents of justice.
The zoological society of pittsburgh is dedicated to being a leader in, and significant contributor to, the conservation of endangered and threatened species. the society provides an enjoyable family experience that fosters understanding,…
The american astronomical society (aas), established in 1899, is the major organization of professional astronomers in north america. the basic objective of the aas is to promote the advancement of astronomy and closely related branches of…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
The western pennsylvania conservancy protects and restores exceptional places to provide our region with clean waters and healthy forests, wildlife and natural areas for the benefit of present and future generations. the conservancy…
For reference, the grantee most central to the portfolio’s shape is Philander Chase Conservancy and the most unlike its peers is Humane World for Animals Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
18 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 18 of the 36 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds DELAWARE ART MUSEUM INC ↗
- Who funds PLANNED PARENTHOOD OF DELAWARE INC ↗
- Who funds TOWER HILL SCHOOL ASSOCIATION ↗
- Who funds NANTUCKET MARIA MITCHELL ASSOCIATION IN ↗
- Who funds Brandywine Conservancy & Museum of Art ↗
- Who funds PHILANDER CHASE CONSERVANCY ↗
- Who funds CONSERVATION INTERNATIONAL FOUNDATION ↗
- Who funds DELAWARE NATURE SOCIETY INC ↗
- Who funds Humane World for Animals Inc ↗
- Who funds Peaceful Valley Donkey Rescue Inc ↗
- Who funds KENNETT AREA COMMUNITY SERVICE ↗
- Who funds Temple University - Of The Commonwealth System of Higher Education ↗
- Who funds SWEET BRIAR INSTITUTE ↗
- Who funds AMERICAN CANCER SOCIETY INC ↗
- Who funds Willistown Conservation Trust Inc ↗
- Who funds GREENMORE FARM ANIMAL RESCUE INC ↗
- Who funds American Museum of Natural History ↗
- Who funds NORTHWELL HEALTH FOUNDATION ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: The Starrett Foundation · Delaware Community Foundation Inc · Jpmorgan Chase Foundation · Nyssa Foundation · United Way of Delaware · Longwood Foundation Inc · The William Penn Foundation · The Philadelphia Foundation · The Bank of America Charitable Foundation Inc · The Pfizer Foundation Inc · Vanguard Charitable Endowment Program · The Blackbaud Giving Fund
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization The Rock Oak Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.
- Planned Parenthood of Delaware Inc — 19% of income from government
- Delaware Nature Society Inc — 13% of income from government
- Nantucket Maria Mitchell Association in — 9% of income from government
- Delaware Art Museum Inc — 8% of income from government
- Tower Hill School Association — 0% of income from government
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.