· Private foundation
Porter Family Charitable Foundation
Its FY2024 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 FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k10 grants · $28k
- $10k–50k5 grants · $100k
- $50k–250k2 grants · $202k
| Recipient | Amount |
|---|---|
| SMITHSONIAN AMERICAN ART MUSEUM | $101,500 |
| VANDERBILT UNIVERSITY | $100,000 |
| KIDS ON STAGE FOUNDATION | $25,000 |
| NATIONAL GALLERY OF ART | $20,000 |
| BISHOP WALKER SCHOOL | $20,000 |
| LIBRARY OF CONGRESS | $20,000 |
| ST PETER'S EPISCOPAL CHURCH | $15,000 |
| WASHINGTON WINTER SHOW | $5,000 |
| KING'S DAUGHTERS' SCHOOL | $5,000 |
| Individual grant recipient | $5,000 |
| THOMAS COLLEGE | $3,500 |
| EDUCATIONAL THEATRE COMPANY | $2,500 |
| WENDT CENTER FOR LOSS & HEALING | $2,000 |
| WILDLIFE CONSERVATION NETWORK | $1,500 |
| TUDOR PLACE FOUNDATION | $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 (FY18–20, $2k) land where the poverty rate runs at 14%, 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.
49 repeat relationships — 16 still active in FY2024, 33 since wound down; 1 grantees were first funded in FY2024 (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 FY2024, 100% of grant dollars renewed an existing relationship; $1k 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
Vanderbilt University7× · 2018–2024 · $190k · revenue +65%
SMITHSONIAN INSTITUTION4× · 2019–2024 · $116k · revenue +22%- TATHE ADMINISTRATORS OF THE TULANE EDUCATIONAL FUND5× · 2018–2022 · $115k · revenue +57%
Funded once
- SCST COLUMBA'S EPISCOPAL CHURCHone grant, 2017 · $30k
- FOFRIENDS OF HIGH LINEone grant, 2019 · $25k
WORLD CENTRAL KITCHEN INCone grant, 2020 · $15k · revenue +21%
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 george washington university (gw) is to educate individuals in liberal arts, languages, sciences, learned professions, and other courses and subjects of study, and to conduct scholarly research and publish the findings…
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…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Washington college challenges and inspires emerging citizen leaders to discover lives of purpose and passion.core valueswe share these values of our founding patron, george washington: integrity, determination, curiosity, civility,…
To graduate people of uncommon integrity, competence, and maturity, who are effective lifelong learners and responsible citizens, and who are prepared to contribute substantially to the world in which they live.
Capitol Hill Day School is a co-educational independent school serving students from pre-kindergarten through 8th grade. Capitol Hill Day School deeply engages a diverse community of students in connecting the classroom with the larger…
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
To inform and enrich the intellectual lives of 20,000 alumni of harvard university in the washington, dc area and to assist harvard university with respect to applicants and undergraduates from the dc area.
The mission of the school is to provide outstanding legal education in a collegial and supportive environment with attention to newly emerging areas of law, particularly those related to technological development, globalization and the…
Wilson college empowers students to be confident and critical thinkers, creative visionaries, effective communicators, honorable leaders, and agents of justice.
Bullis school provides a student-centered balanced experience in academics, arts, athletics and community service. bullis uniquely prepares all students to become caring citizens and creative, critical thinkers who will thrive in…
The association of washington cities builds connections between our state's diverse cities and towns, while providing our members with the support needed to thrive through delivery of data-driven education, nationally recognized pooling…
For reference, the grantee most central to the portfolio’s shape is New York Landmarks Conservancy Inc and the most unlike its peers is Jubilee Jumpstart. 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 40 years old; the field is 18. You back the established end — and your money leans older still.
The field is 20% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 12% 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.
44 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. 44 of the 76 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 Vanderbilt University ↗
- Who funds SMITHSONIAN INSTITUTION ↗
- Who funds THE ADMINISTRATORS OF THE TULANE EDUCATIONAL FUND ↗
- Who funds JUBILEE HOUSING INC ↗
- Who funds Washington Winter Show Inc ↗
- Who funds Belmont University ↗
- Who funds THOMAS COLLEGE ↗
- Who funds The Madeira School ↗
- Who funds Jubilee Jumpstart ↗
- Who funds National Gallery of Art ↗
- Who funds TUDOR PLACE FOUNDATION INC ↗
- Who funds BUILDING BRIDGES ACROSS THE RIVER INC ↗
- Who funds NEW YORK LANDMARKS CONSERVANCY INC ↗
- Who funds Westminster School Inc ↗
- Who funds WOODLEY HOUSE INC ↗
- Who funds WILDLIFE CONSERVATION NETWORK INC ↗
- Who funds Citizens Association of Georgetown ↗
- Who funds ALZHEIMER'S DRUG DISCOVERY FOUNDATION ↗
- Who funds DC SCORES ↗
- Who funds WORLD CENTRAL KITCHEN INC ↗
- Who funds DISTRICT ALLIANCE FOR SAFE HOUSING INC ↗
- Who funds THE FATHER MCKENNA CENTER INC ↗
- Who funds Williams College ↗
- Who funds JAMES K POLK MEMORIAL ASSOCIATION ↗
- Who funds THE ELLINGTON FUND ↗
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: Greater Washington Community Foundation · Clark-Winchcole Foundation · The Morris and Gwendolyn Cafritz Foundation · John Edward Fowler Memorial Foundation · Philip L Graham Fund co Graham Holdings Company · United Way of the National Capital Area · William S Abell Foundation Inc · Thomas Rutherfoord Foundation · Dimick Foundation John M Lynham Jr Trustee · Clark Charitable Foundation Inc Dba a James & Alice B Clark Foundation · Heart Sing · Sachiko Kuno Foundation Inc
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 Porter Family Charitable 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 or a single department — and drag the year to watch it move.
- Old Sturbridge Inc — 4% of income from government
- Williams College — 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
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Find your warmest path to Porter Family Charitable 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.