· Private foundation
The Tom and Mayumi Adams Family Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
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 $10k11 grants · $40k
- $10k–50k5 grants · $61k
- $50k–250k1 grant · $50k
| Recipient | Amount |
|---|---|
| Irvine Barclay Theatre | $50,000 |
| Huntington Beach Firefighters Assn | $16,000 |
| HB Police Officer Foundation | $15,000 |
| PB J Foods | $10,000 |
| Turning Point USA | $10,000 |
| Ari Arteaga Foundation | $10,000 |
| Tunnel to Towers Foundation | $6,000 |
| PSQ | $6,000 |
| Laguna Beach Police Community Found | $5,000 |
| National World War II Museum | $5,000 |
| University of Miami Athletics | $5,000 |
| Huntington Beach Sports Hall of Fam | $5,000 |
| Serving People in Need | $3,000 |
| City of Hope | $2,000 |
| Laguna Beach Police Foundation | $1,000 |
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 (FY18–25, $50k) land where the poverty rate runs at 12%, against an area that typically sits at 10%. 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 +9% since the first grant, against +5% for those funded once.
25 repeat relationships: 10 still active in FY2025, 15 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, 78% of grant dollars renewed an existing relationship; $33k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- HHHOAG HOSPITAL FOUNDATION8× · 2017–2024 · $3.6M · revenue +300%
- IBIRVINE BARCLAY THEATRE OPERATING CO4× · 2021–2025 · $120k · revenue +144%
- TCTHE CLAREMONT INSTITUTE FOR THE STUDY OF STATESMANSHIP & POLITICAL PHILOSOPHY6× · 2017–2024 · $61k · revenue +132%
Funded once
- SMSt Mary Magdalene Orthodox Churchone grant, 2024 · $400k
FRACTURED ATLAS INCone grant, 2023 · $50k · revenue +5%- CHChildren's Hospital Los Angelesone grant, 2022 · $25k · revenue +23%
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 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…
The nstmf's mission is to build inclusive stem communities across the united states. fundamental to these communities are the significant, inspirational connections we foster between the individuals who have received national recognition…
Stanford university is one of a select group of american universities that have achieved eminence in both undergraduate and graduate education and research - cont'd sch o.
The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
Chartered by a unanimous act of congress, the museum is america's national institution for the documentation, study, interpretation, and education of holocaust history and serves as our country's memorial to the victims of the holocaust.…
The ronald reagan presidential foundation and institute is the sole nonprofit organization created by president reagan charged with advancing his legacy and principles: individual liberty, economic opportunity, freedom and democracy, peace…
The fund for american studies (tfas) seeks to create a brighter, more prosperous future by preparing young people for leadership and teaching them the ideas of freedom and a free-market economy. founded in 1967, tfas organizes programs for…
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 navy memorial mission is to honor, recognize and celebrate the men and women of the sea services and the important contributions made by them while serving in the united states navy, marine corps, coast guard and merchant marine. the…
The john f. kennedy presidential library and museum (the "library") is the nation's official memorial to the thirty-fifth president. the library, which was constructed with private funds donated by the public, is administered by the…
Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.
Description of organization mission: the paley center for media is the premier institution dedicated to advancing the understanding of media-it's artistic value, social impact and historical importance-for the public and media…
How this is measured
27 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. 27 of the 50 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 HOAG HOSPITAL FOUNDATION ↗
- Who funds IRVINE BARCLAY THEATRE OPERATING CO ↗
- Who funds THE CLAREMONT INSTITUTE FOR THE STUDY OF STATESMANSHIP & POLITICAL PHILOSOPHY ↗
- Who funds HILLSDALE COLLEGE ↗
- Who funds FRACTURED ATLAS INC ↗
- Who funds UCLA FOUNDATION ↗
- Who funds THE RICHARD NIXON FOUNDATION ↗
- Who funds Serving People In Need Inc ↗
- Who funds Children's Hospital Los Angeles ↗
- Who funds JUSTSOFTBALL FOUNDATION CORP ↗
- Who funds ARI J ARTEAGA FOUNDATION INC ↗
- Who funds THE GEORGE W BUSH FOUNDATION ↗
- Who funds Laguna Beach Police Foundation ↗
- Who funds TURNING POINT USA INC ↗
- Who funds STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION ↗
- Who funds RESPECT 90 FOUNDATION ↗
- Who funds CLASSICS FOR KIDS FOUNDATION ↗
- Who funds THE NATIONAL WORLD WAR II MUSEUM INC ↗
- Who funds LAGUNA BEACH POLICE AND COMMUNITY FOUNDATION ↗
- Who funds MEDIA RESEARCH CENTER ↗
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: Argyros Family Foundation · Orange County Community Foundation · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
How this is measured
How much its grantees rely on government
Each dot is one organization The Tom and Mayumi Adams Family Foundation funds: left to right is the share of its income from government, bottom to top the share from The Tom and Mayumi Adams Family Foundation. Bigger dots raise more.
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to The Tom and Mayumi Adams Family Foundation?
Find your warmest path to The Tom and Mayumi Adams 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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