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The Charles and Roberta Katz Family Foundation at a glance

· Private foundation

The Charles and Roberta Katz 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.

$290k
Granted FY2025still arriving
12
Grants FY2025still arriving
6
States reached
$85k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
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.

Environment$1.2MScience & Tech$655kEducation$571kHousing & Shelter$120kFood & Nutrition$103kArts & Culture$5kCrime & Legal$4k
02FY2025 · 12 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k4 grants · $20k
  • $10k–50k6 grants · $100k
  • $50k–250k2 grants · $170k
$12,000
Median grant
6
States reached
$5.1M
Total assets
Largest grants
RecipientAmount
EXPLORATORIUM$85,000
EARTH JUSTICE$85,000
NATIONAL PARK CONSERVATION ASSOCIATION (NPCA)$33,000
LIFEMOVES$20,000
SECOND HARVEST$15,000
STANFORD UNIVERSITY$12,000
TIDELINES INSTITUTE$10,000
EAST PALO ALTO ACADEMY FOUNDATION$10,000
TROPICAL LANDSCAPE AND CLIMATE PROGRAM$6,000
MARY'S PLACE$5,000
WORLD WILDLIFE FUND$5,000
FREE ARTS NYC$4,000
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 10%, against an area that typically sits at 8%. 73% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 8%LIFEMOVES: $20k → 7%EAST PALO ALTO ACADEMY FOUNDATION: $10k → 8%NATIONAL PARK CONSERVATION ASSOCIATION (NPCA): $50k → 14%NATURE CONSERVANCY OF WASHINGTON: $10k → 9%TIDELINES INSTITUTE: $25k → 18%SECOND HARVEST: $15k → 14%LIFEMOVES: $20k → 7%EAST PALO ALTO ACADEMY FOUNDATION: $10k → 8%NATIONAL PARK CONSERVATION ASSOCIATION (NPCA): $50k → 14%TIDELINES INSTITUTE: $10k → 18%SECOND HARVEST: $15k → 14%LIFEMOVES: $20k → 7%EAST PALO ALTO ACADEMY FOUNDATION: $10k → 8%NATIONAL PARK CONSERVATION ASSOCIATION (NPCA): $34k → 14%SECOND HARVEST: $15k → 14%NATIONAL PARK CONSERVATION ASSOCIATION (NPCA): $33k → 14%EARTH JUSTICE: $85k → 10%NATIONAL PARK CONSERVATION ASSOCIATION (NPCA): $30k → 14%EARTH JUSTICE: $85k → 10%NATIONAL PARK CONSERVATION ASSOCIATION (NPCA): $25k → 14%EXPLORATORIUM: $85k → 10%NATIONAL PARK CONSERVATION ASSOCIATION (NPCA): $25k → 14%EXPLORATORIUM: $85k → 10%NATIONAL PARK CONSERVATION ASSOCIATION (NPCA): $25k → 14%EARTH JUSTICE: $85k → 10%NATIONAL PARK CONSERVATION ASSOCIATION (NPCA): $25k → 14%STANFORD UNIVERSITY: $115k → 8%EARTH JUSTICE: $85k → 10%STANFORD UNIVERSITY: $110k → 8%EXPLORATORIUM: $75k → 10%STANFORD UNIVERSITY: $67k → 8%EXPLORATORIUM: $75k → 10%STANFORD UNIVERSITY: $62k → 8%EARTH JUSTICE: $75k → 10%STANFORD UNIVERSITY: $62k → 8%EXPLORATORIUM: $75k → 10%STANFORD UNIVERSITY: $51k → 8%EXPLORATORIUM: $75k → 10%STANFORD UNIVERSITY: $12k → 8%EARTH JUSTICE: $75k → 10%STANFORD UNIVERSITY: $12k → 8%EXPLORATORIUM: $75k → 10%STANFORD UNIVERSITY: $12k → 8%EARTH JUSTICE: $75k → 10%EARTH JUSTICE: $75k → 10%EARTH JUSTICE: $75k → 10%EXPLORATORIUM: $60k → 10%EXPLORATORIUM: $50k → 10%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.

Which US states its grants reach

AK
WA
IL
NY
OR
CA
NC
DC
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.

99%of every dollar goes to organizations it has funded before.
$2.1M · 11 repeat orgs$23k to everyone else

Grantees it renews have grown median revenue +62% since the first grant, against +10% for those funded once.

11 repeat relationships: 8 still active in FY2025, 3 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

11
2

Total granted

$2.1M
$8k

Median revenue growth · since first grant

+62%
+10%

Still filing today

73%
50%

New vs renewed · share of each year

In FY2025, 95% of grant dollars renewed an existing relationship; $15k 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
EnvironmentEducationArts & CultureInternationalYouth DevelopmentCrime & LegalOther
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

  • EARTHJUSTICE
    9× · 2017–2025 · $715k · revenue +82%
  • L
    LIFEMOVES
    9× · 2017–2025 · $120k · revenue +186%
  • WORLD WILDLIFE FUND INC
    9× · 2017–2025 · $55k · revenue +62%

Funded once

  • OF
    ORGANIZATION FOR TROPICAL STUDIES INC
    one grant, 2023 · $5k · revenue +10%
  • SS
    STANFORD SCHOOLS CORPORATION
    one grant, 2017 · $3k
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
Conservation International Foundation

Ci works to spotlight and secure the critical benefits that nature provides to humanity.

Environment
2
Earth & Space Research

Increase societal understanding of the earth system through scientific research and education.

Science & Tech
3
Nature Collective

Nature collective's mission is to drive a passion for nature for all. we think inclusively and diversely when serving those devoid of nature those who remember nature and want to connect back to it and those who have an affinity with…

Environment
4
Sustainable Fisheries Partnership Foundation

To engage and catalyze global seafood supply chains in rebuilding depleted fish stocks and reducing the environmental impacts of fishing and fish farming.

Animals
5
Resource Renewal Institute

The resource renewal institute facilitates the creation, development and implementation of practical strategies to solve the entire complex environmental problem by addressing it comprehensively.

Environment
6
The Academy of Natural Sciences of Philadelphia

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…

Science & Tech
7
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
8
Fairchild Tropical Botanic Garden Inc

We harness the power of plants for humankind and share the joy and beauty of tropical gardening with everyone. fairchild tropical botanic garden is a museum of tropical plants within a world famous, 83-acre designed landscape. it was…

Environment
9
Lowell Observatory

The mission of lowell observatory is to pursue the study of astronomy, especially the study of our solar system and its evolution; to conduct pure research in astronomical phenomena; and to maintain quality public education and outreach…

Science & Tech
10
The Everglades Foundation Inc

The mission of the foundation is to restore and protect america's everglades through its three programmatic pillars: science, advocacy and education. (continued on schedule o)

Environment
11
Monterey Bay Aquarium Research Institute
—
12
Property and Environment Research Center

Perc is dedicated to advancing conservation through markets, incentives, property rights, and partnerships.

Public Benefit
How this is measured
The grantee most central to the portfolio’s shape is Organization for Tropical Studies Inc; the most unlike its peers is Maris Place. 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

13 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. 13 of the 17 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.

0
Load-bearing (≥25% of a budget)
1
Early backer (in before they grew)
13/13
Grantees still filing
9/13
Grew since first funded

Where the money sits, by cause and then by grantee

EARTHJUSTICE: $715,000 · EnvironmentEARTHJUSTICEWORLD WILDLIFE FUND INC: $55,000 · EnvironmentWORLD WILDLIFE FUND INCDESCHUTES RIVER ALLIANCE: $27,000 · Environment+1 more: $6,000 · EnvironmentTHE EXPLORATORIUM: $655,000 · Arts & CultureTHE EXPLORATORIUMTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $503,000 · EducationTHE BOARD OF TRUSTEES OF T…EAST PALO ALTO ACADEMY FOUNDATION: $65,000 · EducationEAST PALO ALTO ACADEMY FOU…TIDELINES INSTITUTE: $45,000 · EducationTIDELINES INSTITUTENATIONAL PARK CONSERVATION ASSOCIATION (NPCA): $297,000 · OtherNATIONAL PARK CONSERVAT…LIFEMOVES: $120,000 · OtherLIFEMOVESSECOND HARVEST: $82,500 · OtherSECOND HARVESTSAN FRANCISCO FOOD BANK: $20,000 · OtherNATURE CONSERVANCY OF WASHINGTON: $20,000 · Other+1 more: $2,500 · OtherORGANIZATION FOR TROPICAL STUDIES INC: $5,000 · InternationalMaris Place: $5,000 · Youth DevelopmentFREE ARTS FOR ABUSED CHILDREN OF NEW YORK CITY INC: $4,000 · Crime & Legal
Environment$803,000Arts & Culture$655,000Education$613,000Other$542,000International$5,000Youth Development$5,000Crime & Legal$4,000

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 budgetEARTHJUSTICE: $715,000 over 9y, 0.1% of budgetTHE EXPLORATORIUM: $655,000 over 9y, 0.2% of budgetTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $503,000 over 9y, 0.0% of budgetLIFEMOVES: $120,000 over 9y, 0.0% of budgetEAST PALO ALTO ACADEMY FOUNDATION: $65,000 over 9y, 0.7% of budgetWORLD WILDLIFE FUND INC: $55,000 over 9y, 0.0% of budgetTIDELINES INSTITUTE: $45,000 over 3y, 2.5% of budgetDESCHUTES RIVER ALLIANCE: $27,000 over 8y, 1.7% of budgetSAN FRANCISCO FOOD BANK: $20,000 over 4y, 0.0% of budgetTropical Landscape and Climate Program: $6,000 over 1y, 3.3% of budgetORGANIZATION FOR TROPICAL STUDIES INC: $5,000 over 1y, 0.1% of budgetMaris Place: $5,000 over 1y, 1.4% 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 EARTHJUSTICE ↗
  • Who funds THE EXPLORATORIUM ↗
  • Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
  • Who funds LIFEMOVES ↗
  • Who funds EAST PALO ALTO ACADEMY FOUNDATION ↗
  • Who funds WORLD WILDLIFE FUND INC ↗
  • Who funds TIDELINES INSTITUTE ↗
  • Who funds DESCHUTES RIVER ALLIANCE ↗
  • Who funds SAN FRANCISCO FOOD BANK ↗
  • Who funds Tropical Landscape and Climate Program ↗
  • Who funds ORGANIZATION FOR TROPICAL STUDIES INC ↗
  • Who funds Maris Place ↗
  • Who funds FREE ARTS FOR ABUSED CHILDREN OF NEW YORK CITY INC ↗

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.

Vanguard Charitable E…American Online Givin…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
Vanguard Charitable Endowment ProgramPA8.8× affinity4 shared granteesties to 4 of 4Hover any node to trace its alignments.Compare side by side →

Open a dossier: Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · 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 The Charles and Roberta Katz Family Foundation funds: left to right is the share of its income from government, bottom to top the share from The Charles and Roberta Katz Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 10%0%1%3%5%funder's share of their income ↑0%5%10%15%20%share of the org’s income from government →
    no gov moneyreceives it· size = income
    1get no government money at all
    4report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–20%
    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.

    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 17 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 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

    Source object · view filing

    Play a game based on Charles and Roberta Katz Family’s filings →

    More from the funding graph

    The unnamed billions
    grants reported with no recipient in the public record
    The regranting layer
    51% of grant dollars land in the regranting layer
    The DAF merry-go-round
    $9.7B circulates between donor-advised funds
    The endowment market
    who holds foundation money, and what just moved
    The camps
    funders cluster by geography, not ideology
    By state
    where grant money is based, and what stays home