· Private foundation
Nathan & Marlene Addlestone Foundation Inc
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 FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k29 grants · $57k
- $10k–50k1 grant · $10k
| Recipient | Amount |
|---|---|
| JEWISH ENDOWMENT FOUNDATION | $10,000 |
| TRIDENT TECHNICAL COLLEGE | $6,500 |
| TRIDENT LITERACY ASSOCIATION | $5,000 |
| AMERICAN LUNG ASSOCIATION | $3,600 |
| TEMPLE ISRAEL WESTPORT | $3,125 |
| CHARLESTON JEWISH FEDERATION | $2,500 |
| COLLEGE OF CHARLESTON NUOVO CINEMA | $2,500 |
| LOWCOUNTRY LOCAL FIRST | $2,500 |
| KIDS ON POINT | $2,500 |
| CHARLES WEBB CENTER | $2,500 |
| CONGREGATION DOR TIKVAH | $2,350 |
| COMMUNITY FOUNDATION OF GREATER FLINT | $2,000 |
| LOWCOUNTRY STREET GROCERY | $2,000 |
| SLOW FOOD CHARLESTON | $2,000 |
| CHARLESTON DAY SCHOOL | $2,000 |
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 (FY18–22, $10k) land where the poverty rate runs at 12%, against an area that typically sits at 13%. 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 +78% since the first grant, against +6% for the ones you funded once.
57 repeat relationships — 26 still active in FY2025, 31 since wound down; 2 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, 95% of grant dollars renewed an existing relationship; $3k 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
- AHADDLESTONE HEBREW ACADEMY3× · 2017–2024 · $18k · revenue +178%
- ALAMERICAN LUNG ASSOCIATION4× · 2017–2025 · $16k · revenue +175%
- AFASSOCIATION FOR THE BLIND AND VISUALLY IMPAIRED SOUTH CAROLINA9× · 2017–2025 · $14k · revenue +815%
Funded once
- TITEMPLE ISRAEL WESTPORTone grant, 2021 · $18k
- IAINTERNATIONAL AFRICAN AMERICAN MUSEUMone grant, 2018 · $5k · revenue -25%
- HCHISTORIC COMING ST CEMETERY TRUSTone grant, 2019 · $5k
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.
To educate Charleston area residents and visitors about the natural and cultural history of the South Carolina Lowcountry through collections, exhibitions, preservation, conservation, research and related programming.
Empowering and inspiring a new generation of changemakers through theatre. at scct, we define a changemaker as: someone who has empathy for others and is driven to make the world a better place. someone who is inquisitive, open minded, and…
Inspired by the intelligence and emotional wisdom of young people, we create professional theatre for youth and families, foster inclusive community, and nurture meaningful learning through the arts. We provide these experiences through…
The mission of the gibbes museum of art is to enhance lives through art by engaging people of every background and experience with art and artists of enduring quality; collect and preserve the art that touches charleston; and provide…
The mission of the charleston school of law foundation inc is to encourage and assist the study, teaching, promoting and research of the rule of law in charleston, south carolina and all related subject areas as determined by the board of…
Charlotte ballet's mission: through dance, we create authentic connections, engaging and inclusive educational opportunities, and transformative experiences. charlotte ballet's vision: we inspire individuals and communities to explore the…
To strengthen families, organizations, and communities to prevent child abuse and neglect.
Our mission is to provide the best quality education and care for children and to become a national model for early childhood education. in addition to providing a healthy learning environment for children, the center also provides an…
Charleston Collegiate Schools mission is to inspire students to become passionate, lifelong learners by empowering them with knowledge, creativity, curiosity and confidence to mindfully embrace the opportunities of tomorrow.
Enhancing the quality of life for all south carolinians, achieving global competiteveness and ultimately increasing prosperity for sc citizens.
Charleston Literary Festival, Inc. produces a curated, annual program of events with a distinctly international flavor in the historic setting of Charleston, South Carolina. It brings together world class authors and speakers on a variety…
Chamber Music Charleston is dedicated to developing the audience for classical music through chamber music concerts and educational programs of the highest caliber.
For reference, the grantee most central to the portfolio’s shape is Kids On Point Inc and the most unlike its peers is Pure Theatre. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 23 years old; the field is 15. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 10% of your grantees by number, and just 10% of your money.
The orgs you fund almost never close — 2% lost their exemption, against 11% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
40 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. 40 of the 92 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 TRIDENT LITERACY ASSOCIATION INC ↗
- Who funds CHABAD OF CHARLESTON INC ↗
- Who funds ADDLESTONE HEBREW ACADEMY ↗
- Who funds AMERICAN LUNG ASSOCIATION ↗
- Who funds COMMUNITY FOUNDATION OF GREATER FLINT ↗
- Who funds ASSOCIATION FOR THE BLIND AND VISUALLY IMPAIRED SOUTH CAROLINA ↗
- Who funds THE BROOKLYN QUEENS CONSERVATORY OF MUSIC ↗
- Who funds Charleston Jewish Federation Inc ↗
- Who funds KIDS ON POINT INC ↗
- Who funds Disabilities Foundation of Charleston County ↗
- Who funds COLLEGE OF CHARLESTON FOUNDATION ↗
- Who funds LOUIE'S KIDS INC ↗
- Who funds YO ART INC ↗
- Who funds CHARLESTON STAGE COMPANY INC ↗
- Who funds HEALTH EDUCATION IS POWER ↗
- Who funds Lowcountry Local First ↗
- Who funds INTERNATIONAL AFRICAN AMERICAN MUSEUM ↗
- Who funds CHARLESTON DAY SCHOOLINC ↗
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: Coastal Community Foundation of South Carolina Inc · Henry & Sylvia Yaschik Foundation Inc · The Joanna Foundation · Trident United Way · The Cohen Family Foundation · Patrick Family Foundation · Dominion Energy Charitable Foundation · Pathfinder Foundation Inc · The Mark Elliott Motley Foundation Inc · John Winthrop Charitable Trust · Daniel Island Community Fund Inc · Post and Courier 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 Nathan & Marlene Addlestone Foundation Inc 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 or a single department — and drag the year to watch it move.
- Boys & Girls Club of Stamford Inc — 17% 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 Nathan & Marlene Addlestone Foundation Inc?
Find your warmest path to Nathan & Marlene Addlestone Foundation Inc 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.