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North Carolina · 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.

$4k
Granted FY2024(still arriving)
5
Grants FY2024
10
Organizations funded FY2023
10%
First-time grantees FY2023
Read the full brief
Median grant, FY2024
$1,000
Largest grant, FY2024
$1,100
Organizations funded a year
9 to 13
FY2017 to FY2023
States reached, FY2024
1
Total assets, FY2024
$188k
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2023, 10% of the organizations Sigmund and Ellen Tannenbaum Foundation Inc funded were first-time grantees, receiving 1% of its grant dollars.

New vs renewed · share of each year

In FY2023, 99% of grant dollars renewed an existing relationship; $100 went to new ones.

50%100%’18’19’20’21’22’23
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’18’19’20’21’22’23
Arts & CultureEducationCommunity ImprovementHousing & ShelterOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2024still arriving3$2k0%
FY202310$18k10%
FY20229$18k0%
FY202112$82k8%
FY20209$70k11%
FY20199$68k0%
FY201812$70k42%
FY201713$19kn/a
99% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Science & Tech$205kPhilanthropy$87kReligion$56kEducation$27kArts & Culture$26kHuman Services$26kHousing & Shelter$3kRecreation & Sports$2kOther$0

Top grantees

Largest recipients by total granted, FY2017 to FY2024, and the share of each one’s budget the grants supplied at peak.

Show all 14 grantees

What it could do for these grantees

Plus 7 recipients with no EIN on record ($80k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Sigmund and Ellen Tannenbaum Foundation Inc supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetThe Natural Science Center of Greensboro Inc Dba Greensboro Science Center: $205,000 over 6y, 0.7% of budgetEastern Music Festival Inc: $15,780 over 7y, 0.1% of budgetB'Nai Shalom Synagogue Inc: $12,500 over 4y, 0.1% of budgetElon University: $11,000 over 6y, 0.0% of budgetUnited Arts Council of Greensboro Inc: $7,000 over 6y, 0.1% of budgetGreensboro Urban Ministry: $7,000 over 7y, 0.0% of budgetPreservation Greensboro Inc: $2,900 over 5y, 0.2% of budgetDuke University: $2,000 over 2y, 0.0% of budgetHenderson County & Thermal Belt Habitat for Humanity: $1,500 over 1y, 0.0% of budgetGreensboro Downtown Parks Inc: $1,500 over 2y, 0.1% of budgetHabitat for Humanity of Greater Greensboro Inc: $1,100 over 2y, 0.0% of budgetAuthoracare Foundation: $500 over 1y, 0.0% of budgetAls United Greater New York Inc: $100 over 1y, 0.0% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 13.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Well-Spring Retirement Community IncNC20× affinity7 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

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

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare Sigmund and Ellen Tannenbaum Foundation Inc with peer funders

About Sigmund and Ellen Tannenbaum Foundation Inc

How much does Sigmund and Ellen Tannenbaum Foundation Inc give?
Sigmund and Ellen Tannenbaum Foundation Inc reported 5 grants totaling $3,800 in its FY2024 IRS filing. It funded between 9 and 13 organizations a year over FY2017 to FY2023.
What does Sigmund and Ellen Tannenbaum Foundation Inc fund?
By grant dollars over FY2017 to FY2024, its largest causes are Science & Tech (48%), Philanthropy (20%), Religion (13%).
Who are Sigmund and Ellen Tannenbaum Foundation Inc's largest grantees?
By total granted over FY2017 to FY2024: The Natural Science Center of Greensboro Inc Dba Greensboro Science Center ($205k), Eastern Music Festival Inc ($16k), B'Nai Shalom Synagogue Inc ($13k).
Does Sigmund and Ellen Tannenbaum Foundation Inc fund new organizations?
In FY2023, 10% of the organizations it funded were first-time grantees.
Does Sigmund and Ellen Tannenbaum Foundation Inc accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Sigmund and Ellen Tannenbaum Foundation Inc?
Its strongest co-funders, measured against what their size predicts, include Well-Spring Retirement Community Inc, Lincoln Financial Foundation Inc, The Cemala Foundation Inc.
Where is Sigmund and Ellen Tannenbaum Foundation Inc based?
Sigmund and Ellen Tannenbaum Foundation Inc is based in NC.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 23 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Possibly out of date. A more recent filing (FY2025) is on record and reports no grant expense, so the figures above are from FY2024, the most recent year this funder made grants.

Source object · view filing

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