· Private foundation
Martha Lovenheim Siegel Charitable Trust
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 FY2020–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k38 grants · $79k
- $10k–50k1 grant · $10k
| Recipient | Amount |
|---|---|
| ACLU | $10,000 |
| FRESHAIRORG | $8,000 |
| AMERICAN BALLET THEATRE | $8,000 |
| UJA FEDERATION OF NEW YORK | $6,000 |
| FLAMENCO VIVO CARLOTA SANTANA | $6,000 |
| THE METROPOLITAN OPERA | $5,500 |
| PLANNED PARENTHOOD FEDERATION OF AMERICA | $5,000 |
| WQRX NEW YORK PUBLIC RADIO | $4,200 |
| CENTER FOR TRADITIONAL MUSIC & DANCE | $3,500 |
| CHILDREN'S CANCER THERAPY DEVOLPMENT INSTITUTE | $3,000 |
| AMERICAN INDIAN COLLEGE FUND | $3,000 |
| ANTI-DEFAMATION LEAGUE | $3,000 |
| FEEDING AMERICA | $3,000 |
| ALZHEIMER'S ASSOCIATION | $2,000 |
| THE LEAGUE OF WOMEN VOTERS OF THE UNITED STATES | $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 (FY20–25, $6k) land where the poverty rate runs at 6%, against an area that typically sits at 10%. 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 +39% since the first grant, against 0% for the ones you funded once.
52 repeat relationships — 25 still active in FY2025, 27 since wound down; 14 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, 84% of grant dollars renewed an existing relationship; $15k 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
- BTBALLET THEATRE FOUNDATION INC6× · 2020–2025 · $30k · revenue +46%
- TNTHE NEW YORK TIMES COMMUNITIES FUND4× · 2020–2024 · $22k · revenue +12%
- UJUNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC5× · 2020–2025 · $21k · revenue +46%
Funded once
- NDNYSUT DISASTER RELIEF FUNDone grant, 2020 · $5k
- FOFRIENDS OF THE ROCHESTER PUBLIC LIBRARYone grant, 2023 · $5k
- SJSAN JOSE CENTER FOR THE PERFORMING ARTSone grant, 2024 · $4k
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.
Chartered by a unanimous act of congress, the museum is america's national institution for the documentation, study, interpretation, and education of holocaust history and serves as our country's memorial to the victims of the holocaust.…
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."
The architectural league of new york supports critically transformative work in the allied fields that shape the built environment. as a vital, independent forum, the league stimulates thinking, debate, and action on today's (continued on…
The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
Operate a state-of-the-art, world-class genomic research center that creates and uses advanced genomics to understand the genetic basis of disease. for more information, see schedule o.
AJC's mission is to enhance the wellbeing of the Jewish people and Israel, and to advance human rights and democratic values in the United States and around the world. In pursuit of this mission, AJC advances democratic principles, fights…
To educate students to be ethical and socially responsible leaders in a global community.
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 mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
The organization's mission is to engage in non partisan analysis of u.s. foreign policy in the middle east, with special emphasis on the middle east peace process, and to present policymakers in the united states, in the region and in the…
Enhance Columbia University's education mission by acquiring and publishing outstanding original works by scholars and others that contribute to an understanding of global human concerns. Columbia University Press became part of the…
For reference, the grantee most central to the portfolio’s shape is The New York Public Library Astor Lenox and Tilden Foundations and the most unlike its peers is Guatemala Healing Hands Foundation Inc. 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 44 years old; the field is 18. You back the established end — and your money leans older still.
The field is 19% startups (under 5 years old) — 3% of your grantees by number, and just 1% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 10% 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.
59 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. 59 of the 90 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 BALLET THEATRE FOUNDATION INC ↗
- Who funds THE NEW YORK TIMES COMMUNITIES FUND ↗
- Who funds UNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC ↗
- Who funds PLANNED PARENTHOOD FEDERATION OF AMERICA INC ↗
- Who funds FRESH AIR FUND ↗
- Who funds JEWISH SENIOR LIFE FOUNDATION INC ↗
- Who funds Center for Traditional Music and Dance Inc ↗
- Who funds AMERICAN INDIAN COLLEGE FUND ↗
- Who funds The New York Public Library Astor Lenox and Tilden Foundations ↗
- Who funds Feeding America ↗
- Who funds ANTI-DEFAMATION LEAGUE ↗
- Who funds United States Association for UNHCR ↗
- Who funds THE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS ↗
- Who funds AMERICAN FRIENDS OF MAGEN DAVID ADOM ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds ALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC ↗
- Who funds CENTRAL PARK CONSERVANCY INC ↗
- Who funds International Rescue Committee INC ↗
- Who funds UNITED STATES FUND FOR UNICEF ↗
- Who funds MARC LUSTGARTEN PANCREATIC CANCER FOUNDATION ↗
- Who funds HIAS INC ↗
- Who funds HISPANOLA HEALTH PARTNERS ↗
- Who funds Childrens Cancer Therapy Development Institute ↗
- Who funds WNET ↗
- Who funds SOUTHERN POVERTY LAW CENTER INC ↗
- Who funds HILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE ↗
- Who funds GUATEMALA HEALING HANDS FOUNDATION INC ↗
- Who funds OFICINA LEGAL DEL PUEBLO UNIDO INC ↗
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: Morgan Stanley Global Impact Funding Trust Inc · The Bank of America Charitable Foundation Inc · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · 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 Martha Lovenheim Siegel Charitable Trust 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.
- Hias Inc — 88% of income from government
- Childrens Cancer Therapy Development Institute — 44% of income from government
- Oxfam-America 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 Martha Lovenheim Siegel Charitable Trust?
Find your warmest path to Martha Lovenheim Siegel Charitable Trust 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.