· Private foundation
Charles and Sandra Johnston 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 $10k5 grants · $16k
- $10k–50k7 grants · $137k
| Recipient | Amount |
|---|---|
| Individual grant recipient | $41,000 |
| Jacksonville Symphony | $30,000 |
| Dana Farber | $21,000 |
| Mayo Clinic | $15,000 |
| Hope Rural School | $10,000 |
| Parish of the Assumption | $10,000 |
| Individual grant recipient | $10,000 |
| Pan-Mass Challenge | $5,500 |
| Individual grant recipient | $5,000 |
| Safe Pet Rescue | $2,000 |
| Fawn's Small Dog Rescue | $2,000 |
| Animal Welfare Society | $1,000 |
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 (FY23–23, $150) land where the poverty rate runs at 12%, against an area that typically sits at 10%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-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.
14 repeat relationships — 8 still active in FY2025, 6 since wound down; 4 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, 93% of grant dollars renewed an existing relationship; $10k 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
- HRHOPE RURAL SCHOOL INC4× · 2021–2025 · $145k · revenue +15%
- JMJupiter Medical Center Inc3× · 2021–2023 · $111k · revenue +25%
JUDICIAL WATCH INC3× · 2021–2024 · $16k · revenue +3%
Funded once
- SDSINSINAWA DOMINICANS INCone grant, 2023 · $30k
- TAThe Arc Jacksonville Incone grant, 2024 · $20k · revenue 0%
- COCOALITION OF HOPE FOUNDATION INCone grant, 2022 · $13k · revenue -92%
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 mission of the Jupiter Medical Center Foundation, Inc. is to secure the financial resources required to sustain clinical excellence and quality of care at Jupiter Medical Center, Inc. & its affiliates.
JMCPG is committed to providing compassionate, personalized care from the region's most trusted team of physicians and health care professionals. Across the Palm Beaches and the Treasure Coast of Florida, JMCPG practice locations offer…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
The mission of dfci is to provide expert, compassionate, and equitable care to children, adults, and their families, while advancing the understanding, diagnosis, treatment, cure, and prevention of cancer and related diseases. we train new…
The feinstein institute for medical research ("the institute") is the research branch of northwell health ("northwell"). through its affiliation with northwell, the institute's mission is to bridge the gap between biomedical research and…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
As a part of UF Health, the organization's mission is to promote health through outstanding and high-quality patient care, innovative and rigorous education in the health professions and biomedical sciences, and high-impact research across…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
Assist banner health complete its mission to make health care easier so life can be better by providing integrated & coordinated care & population health management.
For reference, the grantee most central to the portfolio’s shape is Judicial Watch Inc and the most unlike its peers is Father Flanagan's Boys' Home. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
17 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. 17 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 INDIAN RIVER STATE COLLEGE FOUNDATION INC ↗
- Who funds HOPE RURAL SCHOOL INC ↗
- Who funds Jupiter Medical Center Inc ↗
- Who funds DANA-FARBER INC ↗
- Who funds The Arc Jacksonville Inc ↗
- Who funds JUDICIAL WATCH INC ↗
- Who funds COALITION OF HOPE FOUNDATION INC ↗
- Who funds KINDOO FAMILY CENTER ↗
- Who funds Guatemalan Tomorrow Fund Inc ↗
- Who funds PAN-MASSACHUSETTS CHALLENGE INC ↗
- Who funds Good Shepherd Food Bank ↗
- Who funds SAFE PET RESCUE INC ↗
- Who funds FLORIDA SHERIFFS ASSOCIATION INC ↗
- Who funds JUNO BEACH POLICE FOUNDATION INC ↗
- Who funds NATIONAL MULTIPLE SCLEROSIS SOCIETY ↗
- Who funds AMERICAN MACULAR DEGENERATION GOEHRING ↗
- Who funds Father Flanagan's Boys' Home ↗
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 Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving Inc · Amazonsmile Foundation
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 Charles and Sandra Johnston 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.
- Hope Rural School Inc — 6% of income from government
- Florida Sheriffs Association Inc — 4% of income from government
- Jupiter Medical Center Inc — 2% of income from government
- Pan-Massachusetts Challenge Inc — 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.
Warm introductions · Powered by PlinthPlus
How do I get to Charles and Sandra Johnston Foundation?
Find your warmest path to Charles and Sandra Johnston Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.