· Private foundation
The Sondheimer 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.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- Under $10k9 grants · $36k
- $10k–50k9 grants · $160k
- $50k–250k7 grants · $525k
| Recipient | Amount |
|---|---|
| AMERICARES | $100,000 |
| INTERNATIONAL RESCUE COMMITTEE | $100,000 |
| ACLU FOUNDATION | $75,000 |
| WORLD CENTRAL KITCHEN | $75,000 |
| PLANNED PARENTHOOD LOS ANGELES | $75,000 |
| CENTER FOR REPRODUCTIVE RIGHTS | $50,000 |
| LOS ANGELES FOOD BANK | $50,000 |
| CEDARS-SINAI | $35,000 |
| NRDC | $30,000 |
| CENTER THEATRE GROUP | $30,000 |
| LOS ANGELES PHILHARMONIC | $15,000 |
| KCET | $10,000 |
| PBS SOCAL | $10,000 |
| SOUTHERN CALIFORNIA PUBLIC RADIO | $10,000 |
| CHILDREN'S HOSPITAL LOS ANGELES | $10,000 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Its human-services grants (FY17–20, $41k) land where the poverty rate runs at 14%, against an area that typically sits at 12%. 98% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.
How this is measured
Which US states its grants reach
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
Grantees it renews have grown median revenue +34% since the first grant, against -5% for those funded once.
25 repeat relationships: 18 still active in FY2025, 7 since wound down; 7 grantees were first funded in FY2025 (too recent to call).
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 FY2025, 96% of grant dollars renewed an existing relationship; $32k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
AMERICAN CIVIL LIBERTIES UNION FOUNDATION INC9× · 2017–2025 · $459k · revenue +102%
WORLD CENTRAL KITCHEN INC8× · 2018–2025 · $395k · revenue ×34
PLANNED PARENTHOOD LOS ANGELES9× · 2017–2025 · $375k · revenue +92%
Funded once
SOUTHERN VISION ALLIANCEone grant, 2024 · $50k · revenue 0%- FFFOCUS FOR DEMOCRACY FUNDone grant, 2024 · $25k
- ACACCELERATE CHANGE INCone grant, 2024 · $25k · revenue -7%
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.
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.
The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…
Central indiana corporate partnership (cicp) is an alliance of indiana's business and research university leaders coming together to foster long-term prosperity for the region. cicp's mission is to transform the economy of indiana in order…
The central mission of the university of southern california is the development of human beings and society as a whole through the cultivation and enrichment of the human mind and spirit. the principal means by which our mission is…
To serve the public by producing world-class opera that preserves, promotes and advances the art form while embodying the diversity, spirit and artistic sensibility unique to los angeles. we envision an engaged and enlightened community in…
See schedule onorc at the university of chicago conducts research and data science on critical societal issues to guide decision-making and the development of programs and public policy. our experts identify relationships and trends, and…
The organization's mission is to educate students for creative occupations in diverse fields of arts and media.
The chicago public education fund (the fund) is a nonprofit organization that improves public schools in chicago by investing in the talented educators who lead them.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
The organization is a non-partisan, membership based speakers' forum that connects business leaders, community members, and engaged individuals with shared interest in local, national, and global affairs. it provides an open and accessible…
American gas association's (the association) mission is to develop and advocate for informed, innovative, and durable policy that fulfills our nation's energy needs, environmental aspirations and economic potential. we are committed to…
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
The california dental association is committed to the success of our members in service to their patients and the public.
How this is measured
33 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. 33 of the 44 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.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
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 AMERICARES FOUNDATION INC ↗
- Who funds AMERICAN CIVIL LIBERTIES UNION FOUNDATION INC ↗
- Who funds WORLD CENTRAL KITCHEN INC ↗
- Who funds PLANNED PARENTHOOD LOS ANGELES ↗
- Who funds THE CENTER FOR REPRODUCTIVE RIGHTS INC ↗
- Who funds International Rescue Committee INC ↗
- Who funds NATURAL RESOURCES DEFENSE COUNCIL INC ↗
- Who funds CENTER THEATRE GROUP OF LOS ANGELES ↗
- Who funds CEDARS-SINAI MEDICAL CENTER ↗
- Who funds THE VOTER PARTICIPATION CENTER ↗
- Who funds JEWISH UNITED FUND OF METROPOLITAN CHICAGO ↗
- Who funds LOS ANGELES PHILHARMONIC ASSOCIATION ↗
- Who funds Children's Hospital Los Angeles ↗
- Who funds GEFFEN PLAYHOUSE INC ↗
- Who funds SOUTHERN CALIFORNIA PUBLIC RADIO ↗
- Who funds SOUTHERN VISION ALLIANCE ↗
- Who funds Jewish Child and Family Services ↗
- Who funds UCLA FOUNDATION ↗
- Who funds FOCUS FOR DEMOCRACY FUND ↗
- Who funds ACCELERATE CHANGE INC ↗
- Who funds NAACP LEGAL DEFENSE & EDUC FUND INC ↗
- Who funds Northwestern University ↗
- Who funds THE BAIL PROJECT INC ↗
- Who funds HARVARD-WESTLAKE SCHOOL ↗
- Who funds SHELTER PARTNERSHIP INC ↗
- Who funds BABY2BABY ↗
- Who funds BRENTWOOD SCHOOL ↗
- Who funds AMERICAN FRIENDS OF MAGEN DAVID ADOM ↗
- Who funds THE ART INSTITUTE OF CHICAGO ↗
- Who funds Lyric Opera of Chicago ↗
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 set of overlaps that mostly run through this funder rather than between each other.
Open a dossier: Fidelity Investments Charitable Gift Fund
How this is measured
How much its grantees rely on government
Each dot is one organization The Sondheimer Foundation funds: left to right is the share of its income from government, bottom to top the share from The Sondheimer Foundation. Bigger dots raise more.
- Americares Foundation Inc: 0% of income from government
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to The Sondheimer Foundation?
Find your warmest path to The Sondheimer 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.
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