· Private foundation
Sigmund and Ellen Tannenbaum 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 clustered by its grantee’s IRS cause code (NTEE), by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| TEMPLE EMANUEL | $1,100 |
| COMMUNITY FOUNDATION OF GREATER GREENSBORO | $1,000 |
| ARTS GREENSBORO | $1,000 |
| GREENSBORO JEWISH FEDERATION | $500 |
| BETH DAVID SYNAGOGUE | $200 |
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 (FY17–23, $7k) land where the poverty rate runs at 16%, against an area that typically sits at 12%. 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.
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 +38% since the first grant, against -8% for the ones you funded once.
14 repeat relationships — 3 still active in FY2024, 11 since wound down.
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; $0 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
- TNTHE NATURAL SCIENCE CENTER OF GREENSBORO INC DBA GREENSBORO SCIENCE CENTER6× · 2017–2023 · $205k · revenue +245%
- EMEASTERN MUSIC FESTIVAL INC7× · 2017–2023 · $16k · revenue +8%
- BSB'NAI SHALOM SYNAGOGUE INC4× · 2020–2023 · $13k · revenue +69%
Funded once
- TCTHE COMMUNITY FOUNDATION STEVEN TANGERone grant, 2017 · $5k
- GFGUILFORD FAMILY SERVICES OF GREENSBOROone grant, 2017 · $2k
- HCHenderson County & Thermal Belt Habitat for Humanityone grant, 2017 · $2k · revenue -15%
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.
Together with its diverse communities, the organization collects objects and stories, connects generations, and challenges people to explore our city's past, present and future. the museum sparks wonder through bold exhibitions and…
Providing standards, guidelines, and procedures to those members engaged in practice of the real estate profession
Greensboro College provides a liberal arts education grounded in the traditions of the United Methodist Church and fosters the intellectual, social, and spiritual development of all students while supporting their individual needs.
To recruit new businesses to winston-salem and forsyth county in order to facilitate growth and economic diversification in the area.
To be north carolina's state orchestra, an orchestra achieving the highest level of artistic quality and performance standards, and embracing its dual legacies of statewide service and music education.
The mission of green hill center for nc art is to promote the visual arts of north carolina by engaging a broad community of artists, adults and children through dynamic exhibitions and educational programs while providing a platform for…
To serve as greensboro, north carolina's principal economic and community development organization. our goal is to strategically develop a vibrant community that creates, expands, and attracts business while advancing the quality of life…
To engage and inspire our community to support caromont health in providing compassionate, exceptional and highly reliable care.
The mission of the greensboro symphony orchestra, inc. is to enrich the cultural life of greensboro, nc and surrounding areas through the development, production, and promotion of the highest quality music and music education programs.
To receive and hold the endowment of the north carolina symphony society, inc. (the "society"), solicit additions to the endowment, safeguard assets, and expend funds for the exclusive use and benefit of the society.
Goodwill industries of central north carolina, inc.'s mission is improving lives and enriching communities through the power of work
North greenville university exists to glorify god by cultivating graduates who are equipped to serve as transformational leaders for church and society.
For reference, the grantee most central to the portfolio’s shape is Community Foundation of Greater Greensboro Inc and the most unlike its peers is Henderson County & Thermal Belt Habitat for Humanity. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
15 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. 15 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 NATURAL SCIENCE CENTER OF GREENSBORO INC DBA GREENSBORO SCIENCE CENTER ↗
- Who funds GREENSBORO JEWISH FEDERATION ↗
- Who funds COMMUNITY FOUNDATION OF GREATER GREENSBORO INC ↗
- Who funds EASTERN MUSIC FESTIVAL INC ↗
- Who funds B'NAI SHALOM SYNAGOGUE INC ↗
- Who funds Elon University ↗
- Who funds UNITED ARTS COUNCIL OF GREENSBORO INC ↗
- Who funds GREENSBORO URBAN MINISTRY ↗
- Who funds Preservation Greensboro Inc ↗
- Who funds DUKE UNIVERSITY ↗
- Who funds GREENSBORO DOWNTOWN PARKS INC ↗
- Who funds Henderson County & Thermal Belt Habitat for Humanity ↗
- Who funds HABITAT FOR HUMANITY OF GREATER GREENSBORO INC ↗
- Who funds AUTHORACARE FOUNDATION ↗
- Who funds ALS UNITED GREATER NEW YORK 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: Well-Spring Retirement Community Inc · Lincoln Financial Foundation Inc · The Cemala Foundation Inc · Tannenbaum-Sternberger Foundation Inc · The Seymour & Carol Levin Foundation · The Ackermann Foundation · The Anonymous Fund · William a Stern Foundation · Hagan Family Fund · Moses H Cone Memorial Hospital Operating Corporation · The Robinson Foundation Inc · The Allendale 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 Sigmund and Ellen Tannenbaum 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.
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.