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· Private foundation

Waldfogel Family Foundation

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.

$15k
Granted FY2023
7
Grants FY2023
2
States reached
$5k
Largest

Read this first · the figures below need context

85% of Waldfogel Family Foundation’s FY2025 grant dollars went to Massachusetts Institute Of Technology, not to grantees.

Its money now reaches organizations through that sponsor, which does not report who recommended each grant. FY2025 names 6 organizations directly, so a portfolio cannot be read from it. Everything below is therefore FY2023, the last year Waldfogel Family Foundation named its own grantees at scale: 5 organizations, $15k. It is dated, not current.

Organizations named directly on the return

9
’17
6
’18
3
’19
7
’20
7
’21
5
’22
5
’23
2
’24
6
’25

Amber years are those where most dollars went to a sponsor.

01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Education$730kArts & Culture$228kCivil Rights$52kHealth$31kAnimals$26kPublic Benefit$9kInternational$3kEnvironment$500
02FY2023 · 7 grants

Where the money goes

Grants by size, and the largest recipients.

$1,000
Median grant
2
States reached
$851k
Total assets
Largest grants
RecipientAmount
GRABHORN INSTITUTE$5,000
NEXLEAF ANALYTICS$5,000
BLAINE COUNTY CHARITABLE FUND$1,000
PENINSULA HUMANE SOCIETY$1,000
Individual grant recipient$1,000
HUMANE SOCIETY OF SILICON VALLEY$1,000
BEST FRIENDS$500
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Dollar for dollar, its grants (FY17–25) land where the poverty rate runs at 9%, against an area that typically sits at 10%. 30% of its dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 10%WELLESLEY COLLEGE FRIENDS OF ART: $30k → 7%MASSACHUSETTS INSTITUTE OF TECHNOLOGY ALUMNI FUND: $100k → 8%BLAINE COUNTY CHARITABLE FUND: $5k → 7%PENINSULA HUMANE SOCIETY: $3k → 7%HUMAN RIGHTS WATCH: $3k → 8%DOGWOOD ANIMAL RESCUE: $1k → 9%CALIFORNIA COLLEGE OF ARTS: $30k → 10%SAN FRANCISCO MUSEUM OF MODERN ART: $10k → 10%NEXLEAF ANALYTICS: $5k → 14%WHITNEY MUSEUM OF AMERICAN ART: $25k → 17%SOUTHERN POVERTY LAW CENTER: $5k → 18%SOUND EQUINE OPTIONS: $5k → 12%WELLESLEY COLLEGE FRIENDS OF ART: $30k → 7%MIT ALUMNI FUND: $100k → 8%PENINSULA HUMANE SOCIETY: $3k → 7%SAN FRANCISCO MUSEUM OF MODERN ART: $10k → 10%SOUTHERN POVERTY LAW CENTER: $5k → 18%WELLESLEY COLLEGE FRIENDS OF ART: $25k → 7%MIT ALUMNI FUND: $75k → 8%PENINSULA HUMANE SOCIETY: $3k → 7%SAN FRANCISCO MUSEUM OF MODERN ART: $10k → 10%SOUTHERN POVERTY LAW CENTER: $5k → 18%WELLESLEY COLLEGE FRIENDS OF ART: $25k → 7%MIT ALUMNI FUND: $50k → 8%EASTSIDE PREP: $5k → 8%SAN FRANCISCO MUSEUM OF MODERN ART: $10k → 10%WELLESLEY COLLEGE HELYN MACLEAN FUND: $15k → 7%MIT ALUMNI FUND: $25k → 8%EASTSIDE PREP: $5k → 8%GRABHORN INSTITUTE: $15k → 10%WELLESLEY COLLEGE HELYN MACLEAN FUND: $15k → 7%EASTSIDE PREP: $5k → 8%GRABHORN INSTITUTE: $5k → 10%WELLESLEY COLLEGE FRIENDS OF ART: $10k → 7%SUN VALLEY MUSIC FESTIVAL: $6k → 7%EASTSIDE PREP: $5k → 8%GRABHORN INSTITUTE: $5k → 10%WELLESLEY COLLEGE ANNUAL FUND: $10k → 7%EASTSIDE PREP: $5k → 8%WELLESLEY COLLEGE FRIENDS OF ART: $10k → 7%EASTSIDE PREP: $5k → 8%WELLESLEY COLLEGE ANNUAL FUND: $5k → 7%EMBARCADERO INSTITUTE: $50k → 10%NEXLEAF ANALYTICS: $10k → 14%EMBARCADERO INSTITUTE: $25k → 10%NEXLEAF ANALYTICS: $5k → 14%NEXLEAF ANALYTICS: $5k → 14%NEXLEAF ANALYTICS: $5k → 14%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

93%of every dollar goes to organizations it has funded before.
$908k · 18 repeat orgs$71k to everyone else

18 repeat relationships: 7 still active in FY2023, 11 since wound down; 4 grantees were first funded in FY2023 (too recent to call). Read against FY2023, the last year this funder named its own grantees directly; its giving has since run through a sponsor, which reports no donor behind each grant.

How the two cohorts compare

Re-uppedFunded once

Organizations

18
3

Total granted

$908k
$58k

Median revenue growth · since first grant

+55%
+161%

Still filing today

44%
67%

New vs renewed · share of each year

In FY2025, 60% of grant dollars renewed an existing relationship; $7k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25
Arts & CultureAnimalsHealthCrime & LegalInternationalEnvironmentOther
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.

Backed again, and grew

  • SF
    SAN FRANCISCO MUSEUM OF MODERN ART
    4× · 2017–2021 · $40k · revenue +37%
  • NA
    NEXLEAF ANALYTICS
    5× · 2017–2023 · $30k · revenue +110%
  • GI
    GRABHORN INSTITUTE
    5× · 2017–2025 · $27k · revenue +289%

Funded once

  • CC
    CALIFORNIA COLLEGE OF ARTS
    one grant, 2017 · $30k
  • WM
    WHITNEY MUSEUM OF AMERICAN ARTgraduated
    one grant, 2017 · $25k · revenue +161%
  • HR
    HUMAN RIGHTS WATCH INC
    one grant, 2017 · $3k · revenue -66%
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
San Jose Museum of Art Association

Nurture empathy and connection by engaging communities with socially relevant contemporary art

Arts & Culture
2
American Museum of Natural History

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."

Arts & Culture
3
The San Francisco Society for the Prevention of Cruelty to Animals

To ensure every companion animal has access to quality medical care, compassionate shelter, and a loving home.

Animals
4
San Diego Museum of Art

To inspire, educate and cultivate curiosity through great works of art.

Arts & Culture
5
Smithsonian Institution

*increase and diffusion of knowledge* is the mission set forth by james smithson. the smithsonian endeavors to shape the future by preserving our heritage, discovering new knowledge, and sharing our resources with the world.

Arts & Culture
6
Oakland Museum of California

The museum's mission is to inspire all californians to create a more vibrant future for themselves and their communities. through collections, exhibitions, education programs, and public dialogue, we inspire people of all ages and…

Arts & Culture
7
Computer History Museum

Chm decodes technology - its computing past, digital present, and future impact on humanity.

Arts & Culture
8
San Francisco Opera Association

We believe opera is a uniquely compelling, entertaining and emotionally thrilling art form. our mission is to bring together growing audiences to experience opera's transformative power.

Arts & Culture
9
Henry E Huntington Library and Art Gallery

The huntington library, art museum, and botanical gardens shares its world-renowned collections to support scholarship, foster learning, inspire creativity, and offer transformative experiences for diverse audiences.

Arts & Culture
10
Warnecke Institute Inc

Warnecke architectural archives mission:the warnecke archives welcomes and encourages the study of its architectural collection. a wealth of material exists for historians, students, and other researchers to use at warnecke archives. the…

Arts & Culture
11
Southern California University of Health Sciences

The mission of southern california university of health sciences (scu) is to educate students as competent, caring and successful practitioners of integrative healthcare. the university is committed to providing excellence in academics,…

Education
12
Sonoma Botanical Garden
—
How this is measured
The grantee most central to the portfolio’s shape is Human Rights Watch Inc; the most unlike its peers is Embarcadero Institute. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

15 grantees tracked through their own filings, 2017–2025.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 15 of the 26 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

1
Load-bearing (≥25% of a budget)
3
Early backer (in before they grew)
15/15
Grantees still filing
10/15
Grew since first funded

Where the money sits, by cause and then by grantee

MIT ALUMNI FUND: $250,000 · OtherMIT ALUMNI FUNDUNIVERSITY OF MINNESOTA: $225,000 · OtherUNIVERSITY OF MINNESOTAWELLESLEY COLLEGE FRIENDS OF ART: $130,000 · OtherWELLESLEY COLLEGE FRIENDS OF ARTWELLESLEY COLLEGE HELYN MACLEAN FUND: $30,000 · OtherCALIFORNIA COLLEGE OF ARTS: $30,000 · OtherIndividual grant recipient: $30,000 · Other+7 more: $41,500 · Other+7 moreMassachusetts Institute of Technology: $100,000 · EducationMassachusetts Inst…EMBARCADERO INSTITUTE: $75,000 · EducationEMBARCADERO INSTIT…SAN FRANCISCO MUSEUM OF MODERN ART: $40,000 · Arts & CultureSAN FRANCI…GRABHORN INSTITUTE: $27,000 · Arts & CultureGRABHORN I…WHITNEY MUSEUM OF AMERICAN ART: $25,000 · Arts & CultureWHITNEY MU…SUN VALLEY SUMMER SYMPHONY INC: $6,000 · Arts & CultureSUN VALLEY…NEXLEAF ANALYTICS: $30,000 · Health+1 more: $1,000 · HealthSOUTHERN POVERTY LAW CENTER INC: $17,000 · Crime & LegalHUMANE SOCIETY SILICON VALLEY: $6,250 · AnimalsSOUND EQUINE OPTIONS: $5,000 · AnimalsANIMAL SHELTER OF WOOD RIVER VALLEY DBA MOUNTAIN HUMANE: $1,000 · AnimalsBLAINE COUNTY CHARITABLE FUND INC: $9,000 · Public Benefit
Other$736,500Education$175,000Arts & Culture$98,000Health$31,000Crime & Legal$17,000Animals$12,250Public Benefit$9,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetMassachusetts Institute of Technology: $100,000 over 1y, 0.0% of budgetEMBARCADERO INSTITUTE: $75,000 over 2y, 50% of budgetSAN FRANCISCO MUSEUM OF MODERN ART: $40,000 over 4y, 0.0% of budgetNEXLEAF ANALYTICS: $30,000 over 5y, 0.2% of budgetGRABHORN INSTITUTE: $27,000 over 5y, 5.0% of budgetWHITNEY MUSEUM OF AMERICAN ART: $25,000 over 1y, 0.0% of budgetSOUTHERN POVERTY LAW CENTER INC: $17,000 over 5y, 0.0% of budgetBLAINE COUNTY CHARITABLE FUND INC: $9,000 over 5y, 1.2% of budgetHUMANE SOCIETY SILICON VALLEY: $6,250 over 8y, 0.0% of budgetSUN VALLEY SUMMER SYMPHONY INC: $6,000 over 1y, 0.1% of budgetSOUND EQUINE OPTIONS: $5,000 over 1y, 0.7% of budgetHUMAN RIGHTS WATCH INC: $2,500 over 1y, 0.0% of budgetANIMAL SHELTER OF WOOD RIVER VALLEY DBA MOUNTAIN HUMANE: $1,000 over 1y, 0.0% of budgetCHILDREN'S HEALTH COUNCIL INC: $1,000 over 1y, 0.0% of budgetELIZABETH F GAMBLE GARDEN: $500 over 2y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

  • Who funds Massachusetts Institute of Technology ↗
  • Who funds EMBARCADERO INSTITUTE ↗
  • Who funds SAN FRANCISCO MUSEUM OF MODERN ART ↗
  • Who funds NEXLEAF ANALYTICS ↗
  • Who funds GRABHORN INSTITUTE ↗
  • Who funds WHITNEY MUSEUM OF AMERICAN ART ↗
  • Who funds SOUTHERN POVERTY LAW CENTER INC ↗
  • Who funds BLAINE COUNTY CHARITABLE FUND INC ↗
  • Who funds HUMANE SOCIETY SILICON VALLEY ↗
  • Who funds SUN VALLEY SUMMER SYMPHONY INC ↗
  • Who funds SOUND EQUINE OPTIONS ↗
  • Who funds HUMAN RIGHTS WATCH INC ↗
  • Who funds ANIMAL SHELTER OF WOOD RIVER VALLEY DBA MOUNTAIN HUMANE ↗
  • Who funds CHILDREN'S HEALTH COUNCIL INC ↗
  • Who funds ELIZABETH F GAMBLE GARDEN ↗

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.

Fidelity Investments Charitable Gift FundMA5.5× affinity6 shared granteesties to 2 of 2Hover any node to trace its alignments.Compare side by side →

Open a dossier: Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving Inc · Amazonsmile Foundation

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.

How much its grantees rely on government

Each dot is one organization Waldfogel Family Foundation funds: left to right is the share of its income from government, bottom to top the share from Waldfogel Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 10%3%13%28%50%funder's share of their income ↑0%10%20%30%40%share of the org’s income from government →median 35%
  • Massachusetts Institute of Technology: 35% of income from government
no gov moneyreceives it· size = income
1get no government money at all
2report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–40%
typical government reliance, FY20–25
How this is measured
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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.
05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to Waldfogel Family Foundation?

Find your warmest path to Waldfogel 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.

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 26 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 2023, released 2023. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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