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· Private foundation

The C K Williams Fdn Inv Adv Acct

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.

$633k
Granted FY2025still arriving
18
Grants FY2025still arriving
9
States reached
$130k
Largest
01What it funds
0199% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.

Arts & Culture$660kEnvironment$415kHealth$280kFood & Nutrition$105kPhilanthropy$90kYouth Development$50kReligion$15kEducation$5kOther$0
02FY2025 · 18 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k4 grants · $23k
  • $10k–50k9 grants · $180k
  • $50k–250k5 grants · $430k
$25,000
Median grant
9
States reached
$2.9M
Total assets
Largest grants
RecipientAmount
BRIDGEPORT HOSPITAL$130,000
MOUNTAIN TOP ARBORETUM$125,000
NO KID HUNGRY - SHARE OUT STRENGTH$75,000
GIFFORD YOUTH ACHIEVEMENT CENTER$50,000
OLANA PARTNERSHIP$50,000
DECORATIVE ARTS TRUST$25,000
NATIVE PLANT TRUST$25,000
SMITHSONIAN AMERICAN ART MUSEUM$25,000
FRIENDS OF THE NATIONAL ARBORETUM$25,000
HILLWOOD ESTATE MUSEUM & GARDENS$25,000
YOUNG CONCERT ARTISTS$25,000
THE OETTMEIER FOUNDATION$10,000
ENVIRONMENT AMERICA$10,000
Individual grant recipient$10,000
MOUNT VERNON LADIES ASSOCIATION$7,500
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 (FY25–25, $50k) land where the poverty rate runs at 12%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%GIFFORD YOUTH ACHIEVEMENT CENTER: $50k → 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.

Which US states its grants reach

NH
IL
NY
MA
PA
NJ
CT
CO
VA
DE
DC
GA
FL
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.

71%of every dollar goes to organizations it has funded before.
$1.2M · 13 repeat orgs$465k to everyone else

Grantees it renews have grown median revenue +57% since the first grant, against +38% for those funded once.

13 repeat relationships: 12 still active in FY2025, 1 since wound down; 6 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

13
9

Total granted

$1.2M
$170k

Median revenue growth · since first grant

+57%
+38%

Still filing today

77%
44%

New vs renewed · share of each year

In FY2025, 53% of grant dollars renewed an existing relationship; $295k went to new ones.

50%100%’20’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’20’22’23’24’25
EnvironmentArts & CultureCommunity ImprovementPhilanthropyFood & NutritionEducationOther
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

  • MT
    MOUNTAIN TOP ARBORETUM INC
    4× · 2020–2025 · $185k · revenue +111%
  • HE
    HILLWOOD ESTATE MUSEUM & GARDENS
    5× · 2020–2025 · $125k · revenue +49%
  • FO
    Friends of the National Arboretum
    5× · 2020–2025 · $125k · revenue +97%

Funded once

  • TC
    THE C K WILLIAMS FOUNDATION
    one grant, 2020 · $40k
  • NP
    NATIVE PLANT TRUST
    one grant, 2020 · $25k
  • TN
    THE NATIONAL MUSEUM OF WOMEN IN THE ARTS
    one grant, 2022 · $25k · revenue -54%
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
New York Botanical Garden

The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…

Environment
2
Isabella Stewart Gardner Museum Inc

Organization's mission statement true to the ambitious vision of its founder and her spirit of creative risk-taking, the mission of the isabella stewart gardner museum is: - to bring to life and preserve the rich historic collection; - to…

Arts & Culture
3
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
4
Museum of Modern Art

The Museum of Modern Art is a private, non-profit institution chartered by the State of New York Department of Education in 1929 to foster public awareness of modern and contemporary art. (Continued in Schedule O)

Arts & Culture
5
American Museum of Natural History

The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

Arts & Culture
6
Jenkins Arboretum & Gardens

The mission of the jenkins arboretum & gardens is to preserve natural, tranquil woodlands for community enjoyment, to showcase native plants and a world class collection of rhododendrons and azaleas, and to promote environmental…

Environment
7
Bartlett Arboretum Association Inc

To cultivate and develop an expansive collection of trees, gardens, and plants for all to explore, enjoy and study; and to provide through education and stewardship, a greener, healthier, more beautiful environment.

Environment
8
The Brooklyn Institute of Arts and Sciences

The mission of the brooklyn institute of arts and sciences, d/b/a brooklyn museum (the "museum") is to bring people together through art and experiences that inspire celebration, compassion, courage, and the will to act. (see schedule o).

Arts & Culture
9
Fairchild Tropical Botanic Garden Inc

We harness the power of plants for humankind and share the joy and beauty of tropical gardening with everyone. fairchild tropical botanic garden is a museum of tropical plants within a world famous, 83-acre designed landscape. it was…

Environment
10
National Academy of Design

The mission of the national academy of design is to promote the fine arts in america through exhibition and education.

Education
11
American Academy of Arts & Sciences

Founded in 1780, the american academy of arts and sciences honors excellence and convenes leaders from every field of human endeavor to examine new ideas, address issues of importance to the nation and the world, and work together "to…

Social Science
12
Henry E Huntington Library and Art Gallery

The huntington library, art museum, and botanical gardens shares its world-renowned collections to support scholarship, foster learning, inspire creativity, and offer transformative experiences for diverse audiences.

Arts & Culture
How this is measured
The grantee most central to the portfolio’s shape is The Garden Club of America; the most unlike its peers is Feeding America. 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

17 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. 17 of the 28 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)
6
Early backer (in before they grew)
17/17
Grantees still filing
12/17
Grew since first funded

Where the money sits, by cause and then by grantee

MOUNTAIN TOP ARBORETUM INC: $185,000 · OtherMOUNTAIN TOP ARBORETUM INCMASS GENERAL BRIGHAM INCORPORATED: $150,000 · OtherMASS GENERAL BRIGHAM INCORPORATEDMOUNT VERNON LADIES ASSOCIATION: $85,000 · OtherMOUNT VERNON LADIES ASSOCIATIONNO KID HUNGRY - SHARE OUT STRENGTH: $75,000 · OtherNO KID HUNGRY - SHARE OUT STRENGTHOETTMEIER FOUNDATION INC: $50,000 · OtherOETTMEIER FOUNDATION INCTHE C K WILLIAMS FOUNDATION: $40,000 · OtherTHE C K WILLIAMS FOUNDATIONNATIVE PLANT TRUST: $25,000 · OtherTHE NATIONAL MUSEUM OF WOMEN IN THE ARTS: $25,000 · OtherWINTERHUR MUSEUM GARDEN & LIBRARY: $25,000 · Other+6 more: $65,000 · Other+6 moreHILLWOOD ESTATE MUSEUM & GARDENS: $125,000 · Arts & CultureHILLWOOD ESTATE MUSEUM & GARDE…SMITHSONIAN INSTITUTION: $125,000 · Arts & CultureSMITHSONIAN INSTITUTIONTHE DECORATIVE ARTS TRUST: $115,000 · Arts & CultureTHE DECORATIVE ARTS TRUSTYOUNG CONCERT ARTISTS INC: $75,000 · Arts & CultureYOUNG CONCERT ARTISTS INCFriends of the National Arboretum: $125,000 · EnvironmentFriends of th…THE GARDEN CLUB OF AMERICA: $25,000 · EnvironmentTHE GARDEN CL…NATIVE PLANT TRUST INC: $25,000 · EnvironmentNATIVE PLANT …ENVIRONMENT AMERICA INC: $20,000 · EnvironmentENVIRONMENT A…+1 more: $5,000 · EnvironmentBRIDGEPORT HOSPITAL: $130,000 · HealthBRIDGEPOR…THE OLANA PARTNERSHIP: $60,000 · Community ImprovementGIFFORD YOUTH ACHIEVEMENT CENTER INC: $50,000 · Human ServicesWashington Winter Show Inc: $25,000 · Philanthropy
Other$725,000Arts & Culture$440,000Environment$200,000Health$130,000Community Improvement$60,000Human Services$50,000Philanthropy$25,000

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetMOUNTAIN TOP ARBORETUM INC: $185,000 over 4y, 12% of budgetBRIDGEPORT HOSPITAL: $130,000 over 1y, 0.0% of budgetHILLWOOD ESTATE MUSEUM & GARDENS: $125,000 over 5y, 0.2% of budgetFriends of the National Arboretum: $125,000 over 5y, 1.6% of budgetSMITHSONIAN INSTITUTION: $125,000 over 5y, 0.0% of budgetTHE DECORATIVE ARTS TRUST: $115,000 over 5y, 0.9% of budgetYOUNG CONCERT ARTISTS INC: $75,000 over 3y, 0.7% of budgetTHE OLANA PARTNERSHIP: $60,000 over 2y, 1.3% of budgetGIFFORD YOUTH ACHIEVEMENT CENTER INC: $50,000 over 1y, 1.3% of budgetTHE GARDEN CLUB OF AMERICA: $25,000 over 5y, 0.1% of budgetWashington Winter Show Inc: $25,000 over 5y, 4.6% of budgetTHE NATIONAL MUSEUM OF WOMEN IN THE ARTS: $25,000 over 1y, 0.1% of budgetFeeding America: $20,000 over 1y, 0.0% of budgetENVIRONMENT AMERICA INC: $20,000 over 2y, 0.1% of budgetMASSACHUSETTS HORTICULTURAL SOCIETY: $5,000 over 1y, 0.2% of budgetPROCTOR ACADEMY: $5,000 over 1y, 0.0% 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 MOUNTAIN TOP ARBORETUM INC ↗
  • Who funds BRIDGEPORT HOSPITAL ↗
  • Who funds HILLWOOD ESTATE MUSEUM & GARDENS ↗
  • Who funds Friends of the National Arboretum ↗
  • Who funds SMITHSONIAN INSTITUTION ↗
  • Who funds THE DECORATIVE ARTS TRUST ↗
  • Who funds YOUNG CONCERT ARTISTS INC ↗
  • Who funds THE OLANA PARTNERSHIP ↗
  • Who funds GIFFORD YOUTH ACHIEVEMENT CENTER INC ↗
  • Who funds THE GARDEN CLUB OF AMERICA ↗
  • Who funds Washington Winter Show Inc ↗
  • Who funds THE NATIONAL MUSEUM OF WOMEN IN THE ARTS ↗
  • Who funds NATIVE PLANT TRUST INC ↗
  • Who funds Feeding America ↗
  • Who funds ENVIRONMENT AMERICA INC ↗
  • Who funds MASSACHUSETTS HORTICULTURAL SOCIETY ↗
  • Who funds PROCTOR ACADEMY ↗

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.

The Joan W Rhame FoundationPA13.6× affinity4 shared granteesties to 5 of 5Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Joan W Rhame Foundation · National Philanthropic Trust · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile 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 The C K Williams Fdn Inv Adv Acct funds: left to right is the share of its income from government, bottom to top the share from The C K Williams Fdn Inv Adv Acct. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 10%1%4%8%15%funder's share of their income ↑0%5%10%15%20%share of the org’s income from government →median 3%
  • Native Plant Trust Inc: 3% of income from government
  • Bridgeport Hospital: 0% of income from government
no gov moneyreceives it· size = income
1get no government money at all
4report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–20%
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 The C K Williams Fdn Inv Adv Acct?

Find your warmest path to The C K Williams Fdn Inv Adv Acct 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 28 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

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