· Private foundation
Nancy and Geoffrey Stack 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.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- Under $10k4 grants · $16k
- $10k–50k8 grants · $130k
- $50k–250k2 grants · $150k
- $250k+1 grant · $825k
| Recipient | Amount |
|---|---|
| UC SAN DIEGO FOUNDATION | $825,000 |
| CYSTINOSIS RESEARCH FOUNDATION | $100,000 |
| LAURA'S HOUSE | $50,000 |
| ACHIEVE | $25,000 |
| GEORGETOWN UNIVERSITY SCHOLARSHIP | $25,000 |
| UNIVERSITY OF PENNSYLVANIA | $25,000 |
| THE WOODEN FLOOR | $15,000 |
| HABITAT FOR HUMANITY | $10,000 |
| MARINE CORPS SCHOLARSHIP FOUNDATION | $10,000 |
| ULI FOUNDATION | $10,000 |
| SEGERSTROM CENTER FOR THE ARTS | $10,000 |
| ORANGE COUNTY COMMUNITY FOUNDATION | $5,000 |
| CITY OF HOPE | $5,000 |
| UC BERKELEY FOUNDATION | $5,000 |
| DAWN REDWOODS CHARITABLE TRUST | $500 |
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 (FY17–25, $761k) land where the poverty rate runs at 10%, against an area that typically sits at 10%. 99% 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 +43% since the first grant, against +9% for those funded once.
47 repeat relationships: 11 still active in FY2025, 36 since wound down; 2 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, 99% of grant dollars renewed an existing relationship; $15k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- USUC SAN DIEGO FOUNDATION3× · 2023–2025 · $3.3M · revenue +33%
- UOUNIVERSITY OF CALIFORNIA IRVINE FOUNDATION5× · 2020–2024 · $1.6M · revenue +95%
- LHLAURA'S HOUSE8× · 2017–2025 · $625k · revenue +49%
Funded once
- OCORANGE COUNTY MUSEUM OF ARTone grant, 2022 · $50k · revenue -57%
- YOYMCA OF SAN FRANCSISCOone grant, 2022 · $10k
- OFORANGEWOOD FOUNDATIONone grant, 2019 · $10k · 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.
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 ucla foundation is the giving, receiving, and investing arm of the ucla campus. the foundation enables private donors to help build, sustain and advance one of the world's finest academic and research institutions. private philanthropy…
The san diego foundation inspires enduring philanthropy and enables community solutions to improve the quality of life in our region.
The uc santa barbara foundation actively works to further the goals of the university of california, santa barbara. the foundation seeks to maintain and nurture the university's quality and distinction. on behalf of the campus, the…
The mission of the uc davis foundation is to secure, steward and manage private gifts for uc davis.
The organization provides professional investment management services for endowed gifts and financial assets entrusted to the ucsf foundation.
Serves the mission of the university by supporting and engaging in research, entrepreneurship, community service, sponsored programs and the acquisition of private resources.
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 foundation's mission is to improve the oral health of all californians by supporting the dental profession and its efforts to meet community needs.
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
Our mission is to support the naval postgraduate school by providing funding and programmatic support for education, research, technology development, institutional initiatives, and community programs that advance national security and…
The jonsson cancer center foundation is the single most important vehicle for raising private funds for cancer research at ucla and plays a key role in advancing cancer treatments and care. please see schedule o for additional information.
To support educational, research and public functions and programs of the riverside campus of the university of california.
How this is measured
58 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. 58 of the 94 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 UNITED WAY INC ↗
- Who funds UC SAN DIEGO FOUNDATION ↗
- Who funds UNIVERSITY OF CALIFORNIA IRVINE FOUNDATION ↗
- Who funds CYSTINOSIS RESEARCH FOUNDATION ↗
- Who funds LAURA'S HOUSE ↗
- Who funds THE ULI FOUNDATION ↗
- Who funds TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA ↗
- Who funds HOAG HOSPITAL FOUNDATION ↗
- Who funds CHAPMAN UNIVERSITY ↗
- Who funds MARINE CORPS SCHOLARSHIP FOUNDATION INC ↗
- Who funds 24 HOURS FOR HANK INC ↗
- Who funds NEWPORT BEACH PUBLIC LIBRARY FOUNDATION ↗
- Who funds ATLANTIC COUNCIL OF THE UNITED STATES INC ↗
- Who funds MARINE CORPS UNIVERSITY FOUNDATION INC ↗
- Who funds THE WOODEN FLOOR FOR YOUTH MOVEMENT ↗
- Who funds Serving People In Need Inc ↗
- Who funds ORANGE COUNTY MUSEUM OF ART ↗
- Who funds ORANGE COUNTY COMMUNITY FOUNDATION ↗
- Who funds Carrington Charitable Foundation ↗
- Who funds SOUTH COAST REPERTORY INC ↗
- Who funds Share Our Selves Corporation ↗
- Who funds St Anne's Family Services ↗
- Who funds STARS AND STRIPES CHILDREN'S FOUNDATION ↗
- Who funds Direct Connections To Africa ↗
- Who funds Berkeley Real Estate Forum ↗
- Who funds Project Access Inc ↗
- Who funds CALIFORNIA COMMUNITY FOUNDATION ↗
- Who funds California Homebuilding Foundation ↗
- Who funds Segerstrom Center for the Arts ↗
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.
Open a dossier: Orange County Community Foundation · Argyros Family Foundation · Croul Family Foundation · Jewish Community Foundation of Orange County · The William Gillespie Foundation · The Beall Family Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · California Community Foundation · Frome Family Foundation · Witte-Sakamoto Family Foundation · The Neisser Family Foundation · Ueberroth Family Foundation
How this is measured
How much its grantees rely on government
Each dot is one organization Nancy and Geoffrey Stack Family Foundation funds: left to right is the share of its income from government, bottom to top the share from Nancy and Geoffrey Stack Family Foundation. Bigger dots raise more.
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to Nancy and Geoffrey Stack Family Foundation?
Find your warmest path to Nancy and Geoffrey Stack 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.
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