· Private foundation
Seibert Family 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 $10k11 grants · $24k
- $10k–50k2 grants · $30k
- $50k–250k1 grant · $60k
| Recipient | Amount |
|---|---|
| AGNES IRWIN SCHOOL | $60,000 |
| UNIVERSITY OF MIAMI | $20,000 |
| VILLANOVA UNIVERSITY CHARLES WIGDER SCHOOL OF LAW | $10,000 |
| DUKE UNIVERSITY | $9,000 |
| DUKE UNIVERSITY | $2,500 |
| ALEX'S LEMONADE STAND FOUNDATION | $2,000 |
| RIVERBEND ENVIRONMENTAL EDUCATION CENTER | $2,000 |
| RAMAPO FOR CHILDREN | $2,000 |
| PHILADELPHIA BALLET | $1,000 |
| BRADY CENTER TO PREVENT GUN VIOLENCE | $1,000 |
| WORLD WILDLIFE FUND | $1,000 |
| BREAST CANCER RESEARCH FOUNDATION | $1,000 |
| THE WETHERILL SCHOOL | $1,000 |
| GLADWYNE FIRE COMPANY | $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.
Dollar for dollar, your grants (FY17–24) land where the poverty rate runs at 10%, against an area that typically sits at 10%. 34% of your 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.
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.
19 repeat relationships — 11 still active in FY2024, 8 since wound down; 2 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, 98% of grant dollars renewed an existing relationship; $2k 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
- TATHE AGNES IRWIN SCHOOL6× · 2019–2024 · $138k · revenue +57%
DUKE UNIVERSITY8× · 2017–2024 · $132k · revenue +51%- UOUniversity of Miami4× · 2021–2024 · $86k · revenue +48%
Funded once
- PTPlease Touch Museumgraduatedone grant, 2017 · $1k · revenue +48%
- ATARDEN THEATRE COMPANYgraduatedone grant, 2020 · $1k · revenue +31%
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.
Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.
The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."
Sanford burnham prebys medical discovery institute's mission is to advance the biomedical sciences by cultivating the next generation of scientific leaders, providing meaningful opportunities for researchers of all backgrounds to learn,…
As a diverse community of learners, we cultivate integrity, curiosity, connection and resilience.
The mission is "to understand the natural world and inspire everyone to care for it." the academy implements its mission through understanding the diversity of life; developing and applying science to protect the environment; and informing…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
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…
The university's goal in the coming decade is to advance learning through the integration of teaching, research and service to others. the core of this goal is to prepare graduates to engage with the world and lead lives of meaning. to do…
Dickinson college provides a useful, innovative and interdisciplinary education in the liberal arts and sciences to prepare students to lead rich and fulfilling lives of engaged global citizenship
The central mission of the university of southern california is the development of human beings and society as a whole through the cultivation and enrichment of the human mind and spirit. the principal means by which our mission is…
We educate the next generation of leaders to improve the health of our society.
For reference, the grantee most central to the portfolio’s shape is Georgetown University and the most unlike its peers is The Wetherill School. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
20 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. 20 of the 23 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 THE AGNES IRWIN SCHOOL ↗
- Who funds DUKE UNIVERSITY ↗
- Who funds University of Miami ↗
- Who funds VILLANOVA UNIVERSITY ↗
- Who funds GEORGETOWN UNIVERSITY ↗
- Who funds RAMAPO FOR CHILDREN INC ↗
- Who funds ALEXS LEMONADE STAND FOUNDATION ↗
- Who funds GLADWYNE FIRE COMPANY ↗
- Who funds BLOOD CANCER UNITED INC ↗
- Who funds THE WETHERILL SCHOOL ↗
- Who funds RIVERBEND ENVIRONMENTAL EDUCATION CENTER ↗
- Who funds NO MORE KIDS WITH CANCER ↗
- Who funds BRADY CENTER TO PREVENT GUN VIOLENCE ↗
- Who funds SIERRA CLUB FOUNDATION ↗
- Who funds WORLD WILDLIFE FUND INC ↗
- Who funds BOYS & GIRLS CLUB OF ATLANTIC CITY INC ↗
- Who funds THE PENNSYLVANIA BALLET ASSOCIATION ↗
- Who funds Please Touch Museum ↗
- Who funds THE BREAST CANCER RESEARCH FOUNDATION INC ↗
- Who funds ARDEN THEATRE COMPANY ↗
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: Hamilton Family Foundation · Connelly Foundation · United Way of Greater Philadelphia and Southern New Jersey · The Blackbaud Giving Fund · Vanguard Charitable Endowment Program · The Pfizer Foundation Inc · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Donor Advised Charitable Giving Inc · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift 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 Seibert Family 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.
- University of Miami — 5% 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 Seibert Family Foundation?
Find your warmest path to Seibert Family 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.