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· Private foundation

Herbert R Mayer and Jeanne C Mayer 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.

$1.9M
Granted FY2025still arriving
32
Grants FY2025still arriving
7
States reached
$150k
Largest
01What you fundRead
02The needRead
03Your edgeRead
04Your fieldRead
05Through PlinthRead
01What you fund
0186% classified

What you funded, over time

Every grant clustered by its grantee’s IRS cause code (NTEE), by year — across FY2017–2025.

Education$3.0MEnvironment$2.0MHuman Services$1.9MYouth Development$650kFood & Nutrition$620kHealth$584kHousing & Shelter$546kAnimals$267kCommunity Improvement$205kOther$2.3M
02FY2025 · 32 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k1 grant · $5k
  • $10k–50k11 grants · $150k
  • $50k–250k20 grants · $1.8M
$50,000
Median grant
7
States reached
$34M
Total assets
Largest grants
RecipientAmount
GREENLINE HOUSING FOUNDATION$150,000
DOOR OF HOPE$150,000
THE CLEVELAND CLINIC FOUNDATION$145,000
TISCH MULTIPLE SCLEROSIS RESEARCH CENTER OF NEW YORK INC$125,000
FIRST DESCENTS$125,000
JOHN HOPKINS UNIVERSITY$105,000
NATIONAL MULTIPLE SCLEROSIS SOCIETY$100,000
FOOD FINDERS$100,000
C5 YOUTH FOUNDATION OF SOUTHERN CALIFORNIA$100,000
HUMAN IT$75,000
OREGON HEALTH & SCIENCE UNIVERSITY FOUNDATION$75,000
COLLEGE ACCESS PLAN$75,000
JOURNEY HOUSE$65,000
THE BOOK TRUCK$60,000
ARMORY CENTER FOR THE ARTS$50,000
02The need
03

Do your dollars go where the need is?

Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.

show:

Your human-services grants (FY17–25, $1.6M) land where the poverty rate runs at 13%, against an area that typically sits at 11%. 84% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 11%HUCKLEBERRY YOUTH PROGRAMS: $70k → 10%NEIGHBORHOOD INDUSTRIES: $25k → 19%WOMEN MOVING MILLIONS: $10k → 17%UNCHAINED AT LAST: $15k → 10%HUCKLEBERRY YOUTH PROGRAMS: $70k → 10%UNCHAINED AT LAST INC: $10k → 10%HUCKLEBERRY YOUTH PROGRAMS INC: $50k → 10%WOMEN MOVING MILLIONS: $10k → 17%HUCKLEBERRY YOUTH PROGRAMS INC: $50k → 10%THE PEOPLE CONCERN: $20k → 14%PARA LOS NINOS: $75k → 14%COVENANT HOUSE CALIFORNIA: $70k → 14%PARA LOS NINOS: $25k → 14%JOURNEY HOUSE: $65k → 14%JOURNEY HOUSE: $65k → 14%JOURNEY HOUSE: $65k → 14%JOURNEY HOUSE: $65k → 14%JOURNEY HOUSE: $50k → 14%JOVENES INC: $100k → 14%JOVENES INC: $100k → 14%SHOES THAT FIT: $125k → 14%INNERCITY STRUGGLE: $50k → 14%SHOES THAT FIT: $100k → 14%INNERCITY STRUGGLE: $25k → 14%SHOES THAT FIT: $75k → 14%JEWISH FAMILY SERVICES OF LOS ANGELES: $10k → 14%SEED HOUSE PROJECT: $125k → 14%ONE VOICE: $7k → 14%SEED HOUSE PROJECT: $80k → 14%ONE VOICE: $7k → 14%MAMA2MAMA INC: $10k → 14%JEWISH FAMILY SERVICES OF LOS ANGELES: $10k → 14%JEWISH FAMILY SERVICES OF LOS ANGELES: $10k → 14%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.

Which US states your grants reach

MT
MN
WI
NY
MA
OR
NV
IN
OH
PA
NJ
CA
CO
MD
DC
TX
FL

US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.

03Your edge
repeat funding

Who you back again

Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.

78%of every dollar goes to organizations you’ve funded before.
$9.3M · 50 repeat orgs$2.6M to everyone else

50 repeat relationships — 17 still active in FY2025, 33 since wound down; 13 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

50
59

Total granted

$9.3M
$1.9M

Median revenue growth · since first grant

+15%
+30%

Still filing today

84%
88%

New vs renewed · share of each year

In FY2025, 63% of grant dollars renewed an existing relationship; $705k 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
EducationHuman ServicesHealthAnimalsYouth DevelopmentHousing & ShelterOther

First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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

  • LD
    LIVING DESERT THE
    3× · 2020–2022 · $2.0M · revenue +100%
  • CY
    C5 YOUTH FOUNDATION OF SOUTHERN CALIFORNIA INC
    4× · 2020–2025 · $350k · revenue +10%
  • FF
    FOOD FORWARD INC
    3× · 2021–2024 · $325k · revenue +52%

Funded once

  • L
    LEADERSUP
    one grant, 2021 · $150k · revenue -2%
  • TM
    THE MAYOR'S FUND FOR LOS ANGELESgraduated
    one grant, 2024 · $100k · revenue +25%
  • CF
    CAREERSPRING FOUNDATIONgraduated
    one grant, 2023 · $75k · revenue +125%

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

04Your field

The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.

1
Public Advocates Inc

For more than five decades, public advocates has challenged the systemic causes of poverty and racial discrimination by strengthening community voices in public policy and achieving tangible legal victories advancing education, housing,…

—
2
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
3
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
4
The San Diego Foundation

The san diego foundation inspires enduring philanthropy and enables community solutions to improve the quality of life in our region.

Philanthropy
5
University of California Irvine Foundation

The mission of the university of california, irvine foundation (uc irvine foundation) is to raise and manage private funds to support uc irvine's broader mission of excellence in teaching, research and public service. to this end, the uc…

Education
6
The Uc Davis Foundation

The mission of the uc davis foundation is to secure, steward and manage private gifts for uc davis.

Education
7
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…

—
8
Children's Hospital Los Angeles

Promotion and advancement of children's health through patient care, research, and education.

Health
9
Communities in Schools of Los Angeles Inc

To surround students with a community of support, empowering them to stay in school and achieve in life. we work with public school systems, establishing relationship with superintendents, principals, educators, and community partners to…

Youth Development
10
California Dental Association Foundation

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.

Science & Tech
11
University of La Verne

The university of la verne offers a distinctive and relevant educational experience to a diverse population of traditional-age, adult, and graduate learners, preparing them for successful careers and a commitment to lifelong learning…

Education
12
Association of California School Administrators

The association serves its members by creating resources that enable california school administrators to develop and apply creative leadership and management skills and in turn, improve the educational process for all students.

—

For reference, the grantee most central to the portfolio’s shape is Leadersup and the most unlike its peers is Red Bucket Equine Rescue. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.

← shrinkinggrowing →↓ leaning in → pulling backsteadyElementary Literacy TutoringFood Banks and PantriesAnimal Rescue and ShelterCommunity Arts CentersYouth Mentoring ProgramsPregnancy Support ServicesDomestic Violence ServicesWomen & Girls Leadership De…Orchestra and Ensemble Perf…Cancer Support ServicesEquine Therapy ProgramsMilitary Veterans SupportImmigrant Worker SupportJewish Community Organizati…Independent K-12 SchoolsCommunity FoundationsEnvironmental Conservation …
the sector your giving your giving is ahead of the sector the sector’s ahead of you· dot size = how much the theme matters to each side
Ordered by the change in your giving — leaning in on top, pulling back at the bottom. The bar between the two dots is how out of step you are with the sector. Hover any row for detail.

Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.

Your grantees are a median of 30 years old; the field is 14. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number24%2%<5yr15%8%5–10yr20%28%10–20yr17%22%20–35yr11%24%35–55yr13%17%55yr+
THE FIELDby orgYOUR MONEYby value24%1%<5yr15%6%5–10yr20%28%10–20yr17%20%20–35yr11%35%35–55yr13%11%55yr+

The field is 24% startups (under 5 years old) — 2% of your grantees by number, and just 1% of your money.

Closures · last 5 years

The orgs you fund almost never close — 0.9% lost their exemption, against 14% of the field you don’t fund.

orgs you fund
0.9%1/112
the rest of the field
14%
26,002/186,866

Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.

04the grantee network

108 grantees tracked through their own filings, 2017–2025.

Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.

Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 108 of the 124 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.

1
Load-bearing (≥25% of a budget)
19
Early backer (in before they grew)
107/108
Grantees still filing
68/108
Grew since you first funded

Where your money sits — by cause, then by grantee

UNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATION — $1,149,999 · EducationUNIVERSITY OF CALIFORNIA SAN…ACCESS BOOKS — $371,000 · EducationACCESS BOOKSAIM HIGH FOR HIGH SCHOOL — $200,000 · EducationAIM HIGH FOR HIGH SCHOOLCOLLEGE ACCESS PLAN — $175,000 · EducationCOLLEGE ACCESS PLAN+18 more — $1,110,250 · Education+18 moreLIVING DESERT THE — $2,000,001 · EnvironmentLIVING DESERT THE+2 more — $30,000 · EnvironmentJOURNEY HOUSE INC — $310,000 · Human ServicesJOURNEY HOUSE INCSHOES THAT FIT — $300,000 · Human ServicesSHOES THAT FITSAVING INNOCENCE INC — $250,000 · Human ServicesSAVING INNOCENCE …HUCKLEBERRY YOUTH PROGRAMS INC — $240,000 · Human ServicesHUCKLEBERRY YOUTH…Seed House Project — $205,000 · Human ServicesSeed House Projec…JOVENES INC — $200,000 · Human ServicesJOVENES INCPARA LOS NINOS — $100,000 · Human ServicesINNERCITY STRUGGLE — $75,000 · Human ServicesCOVENANT HOUSE CALIFORNIA — $70,000 · Human Services+7 more — $144,000 · Human Services+7 moreHuman-I-T — $220,000 · OtherHuman-I-TMASS GENERAL BRIGHAM INCORPORATED — $215,000 · OtherMASS GENERAL BRIGHAM INCORPORA…THE CLEVELAND CLINIC FOUNDATION — $160,000 · OtherDOOR OF HOPE — $150,000 · OtherMY FRIEND'S PLACE — $125,000 · OtherLos Angeles Room & Board — $295,000 · OtherLos Angeles Room & BoardGREENLINE HOUSING FOUNDATION — $150,000 · OtherCOMMUNITY PARTNERS — $150,000 · OtherFIRST DESCENTS — $175,000 · Other+51 more — $1,648,600 · Other+51 moreC5 YOUTH FOUNDATION OF SOUTHERN CALIFORNIA INC — $350,000 · Youth DevelopmentLEADERSUP — $150,000 · Youth DevelopmentDIY GIRLS — $75,000 · Youth DevelopmentHOMEBOY INDUSTRIES — $50,000 · Youth Development+2 more — $25,000 · Youth DevelopmentFOOD FORWARD INC — $325,000 · Food & NutritionFOOD FINDERS INC — $250,000 · Food & NutritionFoodlink for Tulare County Inc — $45,000 · Food & NutritionNATIONAL MULTIPLE SCLEROSIS SOCIETY — $300,000 · HealthTISCH MULTIPLE SCLEROSIS RESEARCH CENTER OF NEW YORK INC — $125,000 · HealthCEDARS-SINAI MEDICAL CENTER — $50,000 · HealthWomen's Reproductive Rights Assistance Project — $25,000 · HealthCHAI LIFELINE INC — $20,000 · Health+9 more — $64,000 · Health
Education$3,006,249Environment$2,030,001Human Services$1,894,000Other$3,288,600Youth Development$650,000Food & Nutrition$620,000Health$584,000

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetLIVING DESERT THE — $2,000,001 over 3y, 2.8% of budgetUNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATION — $1,149,999 over 3y, 0.1% of budgetACCESS BOOKS — $371,000 over 3y, 17% of budgetC5 YOUTH FOUNDATION OF SOUTHERN CALIFORNIA INC — $350,000 over 4y, 7.5% of budgetFOOD FORWARD INC — $325,000 over 3y, 0.1% of budgetJOURNEY HOUSE INC — $310,000 over 5y, 11% of budgetNATIONAL MULTIPLE SCLEROSIS SOCIETY — $300,000 over 3y, 0.1% of budgetSHOES THAT FIT — $300,000 over 3y, 4.1% of budgetLos Angeles Room & Board — $295,000 over 3y, 11% of budgetSAVING INNOCENCE INC — $250,000 over 4y, 3.0% of budgetFOOD FINDERS INC — $250,000 over 3y, 0.3% of budgetHUCKLEBERRY YOUTH PROGRAMS INC — $240,000 over 4y, 0.9% of budgetHuman-I-T — $220,000 over 4y, 0.4% of budgetSeed House Project — $205,000 over 2y, 7.8% of budgetJOVENES INC — $200,000 over 2y, 1.2% of budgetAIM HIGH FOR HIGH SCHOOL — $200,000 over 2y, 1.6% of budgetCOLLEGE ACCESS PLAN — $175,000 over 3y, 5.6% of budgetFIRST DESCENTS — $175,000 over 2y, 1.1% of budgetCOMMUNITY PARTNERS — $150,000 over 2y, 0.1% of budgetLEADERSUP — $150,000 over 1y, 3.3% of budgetTISCH MULTIPLE SCLEROSIS RESEARCH CENTER OF NEW YORK INC — $125,000 over 1y, 1.3% of budgetTHE HUMANE LEAGUE — $102,000 over 4y, 0.5% of budgetUCLA FOUNDATION — $100,000 over 1y, 0.0% of budgetNEW VILLAGE CHARTER SCHOOL INC — $100,000 over 2y, 1.5% of budgetTHE MAYOR'S FUND FOR LOS ANGELES — $100,000 over 1y, 2.0% of budgetPARA LOS NINOS — $100,000 over 2y, 0.1% of budget9 DOTS COMMUNITY LEARNING CENTER — $100,000 over 2y, 1.6% of budgetBrackens Kitchen Inc — $100,000 over 2y, 0.7% of budgetTHE BOOK TRUCK INC — $85,000 over 2y, 23% of budgetCAREERSPRING FOUNDATION — $75,000 over 1y, 4.8% of budgetFAMILIES FORWARD LEARNING CENTER — $75,000 over 1y, 4.0% of budgetDIY GIRLS — $75,000 over 2y, 3.3% of budgetJOHNS HOPKINS UNIVERSITY — $75,000 over 1y, 0.0% of budgetINNERCITY STRUGGLE — $75,000 over 2y, 1.1% of budgetOREGON HEALTH & SCIENCE UNIVERSITY FOUNDATION — $75,000 over 1y, 0.0% of budgetCOVENANT HOUSE CALIFORNIA — $70,000 over 1y, 0.3% of budgetARMORY CENTER FOR THE ARTS — $60,000 over 2y, 0.7% of budgetTHE PLAY EQUITY FUND — $60,000 over 1y, 1.4% of budgetSOUTHERN CALIFORNIA CENTER FOR NONPROFIT MANAGEMENT — $55,000 over 3y, 0.9% of budgetEDUCATIONSUPERHIGHWAY — $50,000 over 1y, 1.8% of budgetMARLEY'S MUTTS DOG RESCUE INC — $50,000 over 1y, 3.4% of budgetSIDE STREET PROJECTS — $50,000 over 1y, 11% of budgetCEDARS-SINAI MEDICAL CENTER — $50,000 over 1y, 0.0% of budgetSafe Parking LA — $50,000 over 1y, 1.6% of budgetHOMEBOY INDUSTRIES — $50,000 over 1y, 0.1% of budgetEDUCATING STUDENTS TOGETHER INC — $50,000 over 1y, 3.7% of budgetCENTER FOR HUMAN RIGHTS ANDCONSTITUTIONAL LAW INC — $50,000 over 1y, 50% of budgetCALIFORNIA STATE UNIVERSITY NORTHRIDGE FOUNDATION — $50,000 over 1y, 0.3% of budget
Go grantee by grantee — a decade per org, and how each moved after you funded them

A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.

The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.

The Ralph M Parsons F…California Community …The Rose Hills Founda…The Annenberg Foundat…Weingart FoundationThe Ahmanson Foundati…Jewish Community Foun…The California Endowm…Liberty Hill Foundati…The California Wellne…Pasadena Community Fo…Conrad N Hilton Found…
The Ralph M Parsons FoundationCA43.3× affinity20 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Ralph M Parsons Foundation · California Community Foundation · The Rose Hills Foundation · The Annenberg Foundation · Weingart Foundation · The Ahmanson Foundation · Jewish Community Foundation of Los Angeles · The California Endowment · Liberty Hill Foundation · The California Wellness Foundation · Pasadena Community Foundation · Conrad N Hilton Foundation

Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.

Government reliance of your grantees

Every dot is one organization Herbert R Mayer and Jeanne C Mayer Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.

2024
’20’21’22’23’24’25
no gov · 20%4%15%34%60%your share of their income ↑0%13%25%38%50%share of the org’s income from government →median 12%
  • Johns Hopkins University — 12% of income from government
  • Oregon Health & Science University Foundation — 1% of income from government
no gov moneyreceives it· size = income
2get no government money at all
34report 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

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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.

05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to Herbert R Mayer and Jeanne C Mayer Foundation?

Find your warmest path to Herbert R Mayer and Jeanne C Mayer 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 directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 124 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your 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. How we build these →

Generated from your IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

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 camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home
State money flows
the interactive map of money crossing state lines