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Sidley Family Foundation at a glance

· Private foundation

Sidley 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.

$218k
Granted FY2025still arriving
16
Grants FY2025still arriving
5
States reached
$25k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2022 to 2025.

Health$125kCivil Rights$115kCrime & Legal$82kEnvironment$55kYouth Development$40kFood & Nutrition$30kEducation$25kHuman Services$20kOther$0
02FY2025 · 16 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k4 grants · $18k
  • $10k–50k12 grants · $200k
$10,000
Median grant
5
States reached
$3.1M
Total assets
Largest grants
RecipientAmount
CENTER FOR AMERICAN PROGRESS$25,000
MAZON INC A JEWISH RESPONSE TO HUNGER$25,000
IMMIGRANT LEGAL RESOURCE CENTER$25,000
PLANNED PARENTHOOD LOS ANGELES$25,000
ALZHEIMER'S DISEASE AND RELATED DISORDERS ASSOCIAT$25,000
DEMOCRACY FORWARD FOUNDATION$15,000
ASPEN CENTER FOR ENVIRONMENTAL STUDIES$10,000
PASADENA COMMUNITY FOUNDATION$10,000
INTERNATIONAL MEDICAL CORPS$10,000
HOMEBOY INDUSTRIES$10,000
LOS ANGELES FIRE DEPARTMENT FOUNDATION$10,000
KCRW FOUNDATION INC$10,000
ROSS VALLEY CHILDREN FOR CHANGE$5,000
PUBLIC MEDIA GROUP OF SOUTHERN CALIFORNIA$5,000
COMMUNITY AGRICULTURAL AND NUTRITIONAL ENTERPRISES$5,000
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:

Its human-services grants (FY22–25, $70k) land where the poverty rate runs at 12%, against an area that typically sits at 12%. 29% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 12%IMMIGRANT LEGAL RESOURCE CENTER: $25k → 10%BRIGID ALLIANCE INC: $20k → 17%IMMIGRANT LEGAL RESOURCE CENTER: $25k → 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.
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.

47%of every dollar goes to organizations it has funded before.
$260k · 5 repeat orgs$290k to everyone else

5 repeat relationships: 4 still active in FY2025, 1 since wound down; 11 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

5
6

Total granted

$260k
$152k

Median revenue growth · since first grant

0%
+32%

Still filing today

80%
100%

New vs renewed · share of each year

In FY2025, 34% of grant dollars renewed an existing relationship; $138k went to new ones.

50%100%’22’23’24’25
RenewedFirst-time

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

’22’23’24’25
Civil RightsCrime & LegalEnvironmentHuman ServicesYouth DevelopmentHealthOther
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

  • AD
    ALZHEIMER'S DISEASE AND RELATED DISORDERS ASSOCIAT
    3× · 2023–2025 · $100k
  • IMMIGRANT LEGAL RESOURCE CENTER
    2× · 2024–2025 · $50k · revenue 0%
  • WR
    Women's Reproductive Rights Assistance Project
    2× · 2022–2024 · $45k · revenue -55%

Funded once

  • GIFFORDS LAW CENTER TO PREVENT GUN VIOLENCEgraduated
    one grant, 2023 · $45k · revenue +32%
  • THE CAMPAIGN LEGAL CENTER INC
    one grant, 2023 · $32k · revenue -35%
  • WILLIAM J BRENNAN CENTER FOR JUSTICE INCgraduated
    one grant, 2024 · $25k · revenue +27%
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
California Forward

Ca fwd drives action to identify solutions that can be taken to scale to meet the challenges the state is facing. the organization is driven by the belief that regional solutions across the state will help ensure economic, environmental,…

Public Benefit
2
The Climate Center

The Climate Center is a climate and energy policy nonprofit working to rapidly reduce climate pollution at scale, starting in California.

Education
3
Kqed Inc

See schedule okqed serves the people of northern california with a community-supported alternative to commercial media, providing the knowledge needed to make informed decisions; convening community dialogue; bringing the arts to everyone;…

Arts & Culture
4
The California Channel

To distribute public affairs and other educational information in order to create an electronic bridge between californians and their public officials, and, in the process educate a new generation of voting citizens and civic leaders who…

—
5
Center for Arms Control and

A nonprofit, nonpartisan research organization dedicated to enhancing international peace and security in the 21st century, thereby retaining its focus on nuclear weapons but expanding to include other present emerging security threats.

International
6
CarbonPlan

Improving the transparency and scientific integrity of climate solutions through open data and tools.

Environment
7
The Union of Concerned Scientists Inc

The union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.

International
8
California Budget & Policy Center

The budget center provides dependable, timely, policy guidance and public education through our independent research and analysis, public education, strategic collaborations, and communications to expand economic opportunities and promote…

Education
9
The American Institute of Architects California

The AIA California, in collaboration with local components, is the voice of the architectural profession.

—
10
Food & Water Watch

Food & water watch conducts extensive research and public education to ensure the food and water we consume is safe, accessible and sustainably produced. so we can all enjoy and trust in what we eat and drink, we help people take charge of…

Food & Nutrition
11
America's Newspapers

Providing research, education and practical information all aimed at optimizing newspapers' business operations, deepening their community engagement and enhancing the quality of their journalism.

Employment
12
Amazon Conservation Association

Amazon conservation unites science, people, and innovation to protect the amazon - the greatest wild forest on earth. as guardians of the most iconic forest on the planet, we bring together the power of the latest science and technology…

Environment
How this is measured
The grantee most central to the portfolio’s shape is Democracy Forward Foundation; the most unlike its peers is Wildlife Conservation Society. 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

22 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. 22 of the 23 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)
22/22
Grantees still filing
8/22
Grew since first funded

Where the money sits, by cause and then by grantee

ALZHEIMER'S DISEASE AND RELATED DISORDERS ASSOCIAT: $100,000 · OtherALZHEIMER'S DISEASE AND RELATED DISORDERS …MAZON A Jewish Response to Hunger: $25,000 · OtherMAZON A Jewish Response to HungerKCRW FOUNDATION INC: $10,000 · OtherWILLIAM J BRENNAN CENTER FOR JUSTICE INC: $25,000 · OtherWILLIAM J BRENNAN CENTER FOR JUSTICE INCINTERNATIONAL MEDICAL CORPS: $10,000 · OtherLOS ANGELES FIRE DEPARTMENT FOUNDATION: $10,000 · OtherPasadena Community Foundation: $10,000 · Other+4 more: $17,500 · Other+4 moreIMMIGRANT LEGAL RESOURCE CENTER: $50,000 · Human ServicesIMMIGRANT LEGA…THE BRIGID ALLIANCE INC: $20,000 · Human ServicesTHE BRIGID ALL…Women's Reproductive Rights Assistance Project: $45,000 · HealthWomen's Reprod…PLANNED PARENTHOOD LOS ANGELES: $25,000 · HealthPLANNED PARENT…GIFFORDS LAW CENTER TO PREVENT GUN VIOLENCE: $45,000 · Civil RightsGIFFORDS LAW C…CENTER FOR AMERICAN PROGRESS: $25,000 · Civil RightsCENTER FOR AME…ASPEN CENTER FOR ENVIRONMENTAL STUDIES: $30,000 · EnvironmentASPEN CENTE…ENVIRONMENTAL DEFENSE FUND INCORPORATED: $25,000 · EnvironmentENVIRONMENT…THE CAMPAIGN LEGAL CENTER INC: $32,000 · Crime & LegalTHE CAMPA…DEMOCRACY FORWARD FOUNDATION: $15,000 · Crime & LegalDEMOCRACY…HOMEBOY INDUSTRIES: $35,000 · Youth DevelopmentRoss Valley Children For Change: $5,000 · Youth Development
Other$207,500Human Services$70,000Health$70,000Civil Rights$70,000Environment$55,000Crime & Legal$47,000Youth Development$40,000

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 budgetIMMIGRANT LEGAL RESOURCE CENTER: $50,000 over 2y, 0.1% of budgetWomen's Reproductive Rights Assistance Project: $45,000 over 2y, 0.8% of budgetGIFFORDS LAW CENTER TO PREVENT GUN VIOLENCE: $45,000 over 1y, 0.5% of budgetHOMEBOY INDUSTRIES: $35,000 over 2y, 0.1% of budgetTHE CAMPAIGN LEGAL CENTER INC: $32,000 over 1y, 0.1% of budgetASPEN CENTER FOR ENVIRONMENTAL STUDIES: $30,000 over 3y, 0.2% of budgetWILLIAM J BRENNAN CENTER FOR JUSTICE INC: $25,000 over 1y, 0.0% of budgetMAZON A Jewish Response to Hunger: $25,000 over 1y, 0.2% of budgetENVIRONMENTAL DEFENSE FUND INCORPORATED: $25,000 over 1y, 0.0% of budgetPLANNED PARENTHOOD LOS ANGELES: $25,000 over 1y, 0.0% of budgetTHE BRIGID ALLIANCE INC: $20,000 over 1y, 0.2% of budgetDEMOCRACY FORWARD FOUNDATION: $15,000 over 1y, 0.0% of budgetINTERNATIONAL MEDICAL CORPS: $10,000 over 1y, 0.0% of budgetLOS ANGELES FIRE DEPARTMENT FOUNDATION: $10,000 over 1y, 0.0% of budgetPasadena Community Foundation: $10,000 over 1y, 0.0% of budgetKCRW FOUNDATION INC: $10,000 over 1y, 0.0% of budgetRoss Valley Children For Change: $5,000 over 1y, 2.1% of budgetWildlife Conservation Society: $5,000 over 1y, 0.0% of budgetPUBLIC MEDIA GROUP OF SOUTHERN CALIFORNIA: $5,000 over 1y, 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.

How much its grantees rely on government

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

2024
’20’21’22’23’24’25
no gov · 00%0%1%3%5%funder's share of their income ↑0%13%25%38%50%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    5report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–50%
    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 Sidley Family Foundation?

    Find your warmest path to Sidley 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 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 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

    Source object · view filing

    Play a game based on Sidley 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