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· Private foundation

William McCaskey Chapman and Adaline Dinsmore Chapman Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$720k
Granted FY2025still arriving
32
Grants FY2025still arriving
1
States reached
$50k
Largest
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Education$3.8MArts & Culture$514kEnvironment$334kYouth Development$285kHuman Services$75kHealth$24k
02FY2025 · 32 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k4 grants · $27k
  • $10k–50k26 grants · $594k
  • $50k–250k2 grants · $100k
$20,000
Median grant
1
States reached
$22M
Total assets
Largest grants
RecipientAmount
York School$50,000
International School of Monterey$50,000
Chartwell School$40,000
Monterey Bay Aquarium$40,000
Stevenson School$37,500
Santa Catalina School$35,000
Girls Inc of Central Coast$30,000
Monterey Academy Oceanographic Scie$30,000
Youth Music Monterey$30,000
San Carlos School$27,000
All Saints Episcpal Day School$27,000
Notre Dame High School$25,000
Monterey Peninsula College Foundati$25,000
Youth Arts Collective$25,000
Casa of Monterey County$25,000
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 (FY24–25, $34k) land where the poverty rate runs at 12%, against an area that typically sits at 10%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%Community Partnership for Youth: $10k → 12%Sun Street Centers: $12k → 12%Sun Street Centers: $12k → 12%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.

99%of every dollar goes to organizations it has funded before.
$4.9M · 37 repeat orgs$73k to everyone else

Grantees it renews have grown median revenue +28% since the first grant, against -92% for those funded once.

37 repeat relationships: 29 still active in FY2025, 8 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

37
3

Total granted

$4.9M
$45k

Median revenue growth · since first grant

+28%
-92%

Still filing today

57%
0%

New vs renewed · share of each year

In FY2025, 96% of grant dollars renewed an existing relationship; $28k 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
EducationArts & CultureHuman ServicesAnimalsCrime & LegalYouth DevelopmentOther
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

  • IS
    INTERNATIONAL SCHOOL OF MONTEREY
    9× · 2017–2025 · $444k · revenue +76%
  • RL
    ROBERT LOUIS STEVENSON SCHOOL
    9× · 2017–2025 · $303k · revenue +50%
  • MONTEREY BAY AQUARIUM FOUNDATION
    8× · 2017–2025 · $285k · revenue +105%

Funded once

  • MF
    MPC Foundation
    one grant, 2017 · $30k
  • PG
    Pacific Grove Elementary School
    one grant, 2024 · $10k
  • CO
    COLLEAGUES OF THE ARTS
    one grant, 2017 · $5k · revenue -92%
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
Terra Marin School

Our mission is to spark wonder and intellectual curiosity in each child. We achieve this through a purposeful blend of:Engaging academics custom-tailored to each child's abilities, strengths and interests;An unparalleled social-emotional…

Education
2
Monterey Museum of Art

The monterey museum of art cultivates curiosity in the visual arts and engages community with the diversity of california art - past, present, and future.

Arts & Culture
3
Pacific Community Charter School

To provide a rigorous interdisciplinary curriculum which prepares students to enter higher education and occupations in their communities with an understanding of their geographic and historical roots and the goals toward which they can…

Education
4
Los Gatos Museum Association

Engaging community at the intersection of art, history and education through innovative, locally connected and globally relevant exhibits, programs and experiences.

—
5
Monterey Bay Aquarium Research Institute
—
6
Marin Academy

Marin academy asks every individual to think, question, and create in an environment of encouragement and compassion, and challenges each person to accept the responsibilities posed by education in a democratic society.

Education
7
Marin Horizon School Inc

We ground students in a deep sense of belonging so they become enthusiastic learners, develop confident voices, and emerge as beacons of kindness in their communities.

Education
8
California Academy of Sciences

The academy is a renowned scientific and educational institution with a mission to regenerate the natural world through science, learning, and collaboration. based in san francisco's golden gate park, it is home to a world-class aquarium,…

Arts & Culture
9
The Coral Reef and Marine Science Foundation Inc C/O James Bildner
—
10
Friends of Monterey Academy of Oceanographic Science

The Monterey Academy of Oceanographic Science, located at Monterey High School, prepares public high school students from throughout Monterey County for academic and career success. This is accomplished through a challenging curriculum…

Education
11
Redwood Coast Montessori

The mission of Redwood Coast Montessori is to serve a diverse population of students (TK-12) in the Humboldt County area by providing students with a high quality educational option based on the Montessori method.

Education
12
Ocean Grove Charter School

Ocean grove charter school is an independent study charter school that provides a voluntary public education choice for families of students who choose to educate their children in the home environment.

Education
How this is measured
The grantee most central to the portfolio’s shape is Santa Catalina School; the most unlike its peers is Sun Street Centers. 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

24 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. 24 of the 43 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)
7
Early backer (in before they grew)
22/24
Grantees still filing
16/24
Grew since first funded

Where the money sits, by cause and then by grantee

ALL SAINTS EPISCOPAL DAY SCHOOL: $242,460 · OtherALL SAINTS EPISCOPAL DAY SCHOOLPacific Grove Unified School Distri: $212,312 · OtherPacific Grove Unified School DistriMonterey Academy Oceanographic Scie: $205,000 · OtherMonterey Academy Oceanographic SciePACIFIC GROVE MIDDLE SCHOOL: $193,500 · OtherPACIFIC GROVE MIDDLE SCHOOLGirls Inc of Central Coast: $175,000 · OtherGirls Inc of Central CoastMonterey Peninsula Unified School D: $166,000 · OtherMonterey Peninsula Unified School DNotre Dame High School: $149,000 · OtherNotre Dame High SchoolPacific Grove Middle School: $115,000 · OtherPacific Grove Middle SchoolSan Carlos School: $106,000 · OtherBoys Girls Club of Mo Co: $100,000 · OtherCHRISTIAN BROTHERS INSTITUTE OF CALIFORNIA: $80,000 · Other+11 more: $385,500 · Other+11 moreINTERNATIONAL SCHOOL OF MONTEREY: $444,000 · EducationINTERNATIONAL SCHOOL OF MONTEREYTHE YORK SCHOOL: $360,000 · EducationTHE YORK SCHOOLROBERT LOUIS STEVENSON SCHOOL: $302,500 · EducationROBERT LOUIS STEVENSON SCHOOLSANTA CATALINA SCHOOL: $270,000 · EducationSANTA CATALINA SCHOOLMonterey Peninsula College Foundation: $180,197 · EducationMonterey Peninsula College FoundationCHARTWELL SCHOOL: $180,000 · EducationCHARTWELL SCHOOL+3 more: $115,000 · Education+3 moreYOUTH ARTS COLLECTIVE INC: $197,000 · Arts & CultureYOUTH ARTS CO…YOUTH MUSIC MONTEREY: $187,500 · Arts & CultureYOUTH MUSIC M…The Lyceum of Monterey County: $97,400 · Arts & CultureThe Lyceum of…SPECTORDANCE: $62,000 · Arts & CultureSPECTORDANCETHE WESTON COLLECTIVE: $30,000 · Arts & CultureMUSEUM FOUNDATION OF PACIFIC GROVE INC: $22,000 · Arts & Culture+1 more: $10,000 · Arts & CultureMONTEREY BAY AQUARIUM FOUNDATION: $285,000 · AnimalsCourt Appointed Special Advocates of Monterey County Inc: $75,000 · Crime & LegalSUN STREET CENTERS: $24,000 · Human ServicesCOMMUNITY PARTNERSHIP FOR YOUTH: $10,000 · Human ServicesMEARTH: $16,000 · Youth Development
Other$2,129,772Education$1,851,697Arts & Culture$605,900Animals$285,000Crime & Legal$75,000Human Services$34,000Youth Development$16,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetINTERNATIONAL SCHOOL OF MONTEREY: $444,000 over 9y, 1.8% of budgetTHE YORK SCHOOL: $360,000 over 9y, 0.7% of budgetROBERT LOUIS STEVENSON SCHOOL: $302,500 over 9y, 0.1% of budgetMONTEREY BAY AQUARIUM FOUNDATION: $285,000 over 8y, 0.1% of budgetSANTA CATALINA SCHOOL: $270,000 over 9y, 0.2% of budgetYOUTH ARTS COLLECTIVE INC: $197,000 over 9y, 6.5% of budgetYOUTH MUSIC MONTEREY: $187,500 over 9y, 8.1% of budgetMonterey Peninsula College Foundation: $180,197 over 8y, 2.9% of budgetCHARTWELL SCHOOL: $180,000 over 9y, 0.3% of budgetThe Lyceum of Monterey County: $97,400 over 9y, 11% of budgetCourt Appointed Special Advocates of Monterey County Inc: $75,000 over 3y, 1.6% of budgetSPECTORDANCE: $62,000 over 5y, 8.7% of budgetCARMEL HIGH SCHOOL FOUNDATION: $55,000 over 6y, 11% of budgetPoint Lobos Foundation: $32,500 over 5y, 0.9% of budgetWESTERN FLYER FOUNDATION: $30,000 over 2y, 1.1% of budgetBIG SUR CHARTER SCHOOL: $30,000 over 3y, 0.8% of budgetTHE WESTON COLLECTIVE: $30,000 over 2y, 24% of budgetCARMEL PUBLIC LIBRARY FOUNDATION: $30,000 over 2y, 0.9% of budgetSUN STREET CENTERS: $24,000 over 2y, 0.1% of budgetMUSEUM FOUNDATION OF PACIFIC GROVE INC: $22,000 over 3y, 0.9% of budgetMEARTH: $16,000 over 3y, 0.8% of budgetARTS COUNCIL FOR MONTEREY COUNTY: $10,000 over 1y, 0.5% of budgetCOLLEAGUES OF THE ARTS: $5,000 over 1y, 6.8% 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.

  • Who funds INTERNATIONAL SCHOOL OF MONTEREY ↗
  • Who funds THE YORK SCHOOL ↗
  • Who funds ROBERT LOUIS STEVENSON SCHOOL ↗
  • Who funds MONTEREY BAY AQUARIUM FOUNDATION ↗
  • Who funds SANTA CATALINA SCHOOL ↗
  • Who funds YOUTH ARTS COLLECTIVE INC ↗
  • Who funds YOUTH MUSIC MONTEREY ↗
  • Who funds Monterey Peninsula College Foundation ↗
  • Who funds CHARTWELL SCHOOL ↗
  • Who funds The Lyceum of Monterey County ↗
  • Who funds Court Appointed Special Advocates of Monterey County Inc ↗
  • Who funds SPECTORDANCE ↗
  • Who funds CARMEL HIGH SCHOOL FOUNDATION ↗
  • Who funds Point Lobos Foundation ↗
  • Who funds WESTERN FLYER FOUNDATION ↗
  • Who funds BIG SUR CHARTER SCHOOL ↗
  • Who funds THE WESTON COLLECTIVE ↗
  • Who funds CARMEL PUBLIC LIBRARY FOUNDATION ↗
  • Who funds SUN STREET CENTERS ↗
  • Who funds MUSEUM FOUNDATION OF PACIFIC GROVE INC ↗
  • Who funds MEARTH ↗
  • Who funds COMMUNITY PARTNERSHIP FOR YOUTH ↗

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.

Pebble Beach Company FoundationCA47.4× affinity20 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Pebble Beach Company Foundation · Monterey Peninsula Foundation · Barnet Segal Charitable Trust · Nancy Buck Ransom Foundation · Arts Council for Monterey County · Nancy Eccles and Homer M Hayward Family Foundation · Dunspaugh Dalton Foundation Inc · Manitou Fund · American Water Charitable Foundationinc · The Tyler Foundation · Woodward Fund Ua Fsw Bank of America Na · Berkshire Foundation

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization William McCaskey Chapman and Adaline Dinsmore Chapman Foundation funds: left to right is the share of its income from government, bottom to top the share from William McCaskey Chapman and Adaline Dinsmore Chapman Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%2%6%14%25%funder's share of their income ↑0%23%45%68%90%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    6report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–90%
    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 William McCaskey Chapman and Adaline Dinsmore Chapman Foundation?

    Find your warmest path to William McCaskey Chapman and Adaline Dinsmore Chapman 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 43 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 William McCaskey Chapman and Adaline Dinsmore Chapman’s filings →

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