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Kos Family Foundation at a glance

· Private foundation

Kos 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.

$108k
Granted FY2025still arriving
7
Grants FY2025still arriving
2
States reached
$79k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2021 to 2025.

Health$93kEducation$88kHuman Services$82kReligion$34kYouth Development$20kRecreation & Sports$13kPhilanthropy$10kAnimals$10kOther$0
02FY2025 · 7 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k4 grants · $10k
  • $10k–50k2 grants · $20k
  • $50k–250k1 grant · $79k
$5,000
Median grant
2
States reached
$2.4M
Total assets
Largest grants
RecipientAmount
TGR FOUNDATION$78,500
THEATRE FOR CHILDREN INC$10,000
GOT CHAOS$10,000
YOUTH ON COURSE$5,000
DE LA SALLE HIGH SCHOOL$2,500
FOOD BANK OF CONTRA COSTA AND SOLANO$1,000
MOVEMBER FOUNDATION$1,000
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 (FY21–21, $10k) land where the poverty rate runs at 12%, against an area that typically sits at 9%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 9%SAINT JOHN'S PROGRAM FOR REAL CHANGE: $10k → 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.

60%of every dollar goes to organizations it has funded before.
$217k · 8 repeat orgs$143k to everyone else

8 repeat relationships: 4 still active in FY2025, 4 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

8
6

Total granted

$217k
$54k

Median revenue growth · since first grant

-3%
+0%

Still filing today

63%
83%

New vs renewed · share of each year

In FY2025, 17% of grant dollars renewed an existing relationship; $90k went to new ones.

50%100%’21’22’23’24’25
RenewedFirst-time

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

’21’22’23’24’25
HealthEducationArts & CultureFood & NutritionReligionRecreation & SportsOther
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

  • PB
    Pediatric Brain Tumor Foundation of the United States Inc
    2× · 2022–2023 · $46k · revenue -3%
  • GC
    GOT CHAOS INC
    2× · 2024–2025 · $40k
  • JM
    JOHN MUIR HEALTH FOUNDATION
    2× · 2022–2023 · $35k · revenue -27%

Funded once

  • RO
    RENO-TAHOE OPEN FOUNDATION
    one grant, 2024 · $13k · revenue 0%
  • SAINT JOHN'S PROGRAM FOR REAL CHANGE
    one grant, 2021 · $10k · revenue +0%
  • UW
    UNITED WAY
    one grant, 2021 · $10k
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
John Muir Physician Network

To establish, operate and maintain multi-specialty medical clinics for the provision of healthcare services. engage in, sponsor and promote charitable healthcare, educational and medical research activities and provide health plan services…

Health
2
Npr Foundation

The npr foundation ("foundation") is organized and operated exclusively for the benefit of its sole supported organization, national public radio, inc. ("npr inc."). the foundation supports npr inc. through various activities such as…

—
3
Personal Care Products Council Foundation Inc

The foundation is set up to deliver one program - look good feel better. the mission of this nationwide program is to improve the quality of life of women, men, and teens undergoing cancer treatment by offering advice on how to cope with…

Health
4
National Sporting Goods Association

Nsga supports its members' efforts to grow their business and advocates on their behalf by offering the following: 1) resources for recruiting, training, and development; 2) valuable publications & communications; 3) education and…

—
5
Ucsf Health Medical Foundation

See schedule othe mission of ucsf health medical foundation is threefold: 1) to establish, operate and maintain medical clinics for the provision of healthcare services in california; 2) to promote health by providing, coordinating,…

Health
6
Kfhpw Holdings

Supporting kaiser permanente organizations which provide high-quality, affordable health care services to improve the health of our members and the communities we serve.

—
7
Federation of State Medical Boards of the United States Inc

The fsmb serves as the voice for state medical boards, supporting them through education, assessment, research and advocacy while providing services and initiatives that promote patient safety, quality health care and regulatory best…

Health
8
National Foundation for Cancer Research

To support cancer research and public education relating to prevention, earlier diagnosis, better treatments and ultimately, a cure for cancer.

Health
9
Public Health Institute

Public health institute generates and promotes research, leadership and partnerships to build capacity for strong public health policy, programs, systems and practices.

Health
10
Arc Research Institute

Our mission is to accelerate scientific progress, understand the root causes of disease, and narrow the gap between discoveries and impact on patients.

Health
11
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
12
Kaiser Foundation for the Advancement of Integrated Health Care

Kaiser foundation for the advancement of integrated health care is a nonprofit 501(c)(4) advocacy organization to engage in proactive advocacy to promote understanding of the benefits of integrated care and coverage, and support of the…

Health
How this is measured
The grantee most central to the portfolio’s shape is Tiger Woods Foundation Inc; the most unlike its peers is American Diabetes Association. 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

13 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. 13 of the 17 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)
0
Early backer (in before they grew)
13/13
Grantees still filing
4/13
Grew since first funded

Where the money sits, by cause and then by grantee

WATERMARK COMMUNITY CHURCH: $34,000 · OtherWATERMARK COMMUNITY CHURCHST ISIDORE CHURCH: $21,500 · OtherST ISIDORE CHURCHNCGA FOUNDATION: $20,000 · OtherNCGA FOUNDATIONUNITED WAY: $10,000 · OtherUNITED WAYBAY AREA CRISIS NURSERY: $10,000 · OtherBAY AREA CRISIS NURSERYDE LA SALLE HIGH SCHOOL OF CONCORD INC: $9,500 · OtherDE LA SALLE HIGH SCHOOL OF CONCORD I…WILD SHEEP FOUNDATION: $10,000 · OtherWILD SHEEP FOUNDATION+1 more: $1,000 · OtherPediatric Brain Tumor Foundation of the United States Inc: $46,320 · HealthPediatric Brain Tumor Foundat…JOHN MUIR HEALTH FOUNDATION: $35,000 · HealthJOHN MUIR HEALTH FOUNDATIONMOVEMBER FOUNDATION: $11,000 · HealthMOVEMBER FOUNDATION+1 more: $1,000 · HealthTIGER WOODS FOUNDATION INC: $78,500 · EducationTIGER WOODS FOUNDATION I…GOT CHAOS INC: $40,000 · ReligionGOT CHAOS IN…RENO-TAHOE OPEN FOUNDATION: $12,500 · Recreation & SportsSAINT JOHN'S PROGRAM FOR REAL CHANGE: $10,000 · Human ServicesTHEATRE FOR CHILDREN INC DBA B STREET THEATRE: $10,000 · Arts & Culture
Other$116,000Health$93,320Education$78,500Religion$40,000Recreation & Sports$12,500Human Services$10,000Arts & Culture$10,000

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 budgetTIGER WOODS FOUNDATION INC: $78,500 over 1y, 0.5% of budgetPediatric Brain Tumor Foundation of the United States Inc: $46,320 over 2y, 0.4% of budgetGOT CHAOS INC: $40,000 over 2y, 9.8% of budgetJOHN MUIR HEALTH FOUNDATION: $35,000 over 2y, 0.0% of budgetNCGA FOUNDATION: $20,000 over 4y, 0.1% of budgetRENO-TAHOE OPEN FOUNDATION: $12,500 over 1y, 0.3% of budgetMOVEMBER FOUNDATION: $11,000 over 4y, 0.0% of budgetSAINT JOHN'S PROGRAM FOR REAL CHANGE: $10,000 over 1y, 0.1% of budgetBAY AREA CRISIS NURSERY: $10,000 over 1y, 0.7% of budgetTHEATRE FOR CHILDREN INC DBA B STREET THEATRE: $10,000 over 1y, 0.3% of budgetWILD SHEEP FOUNDATION: $10,000 over 1y, 0.1% of budgetFOOD BANK OF CONTRA COSTA AND SOLANO: $1,000 over 1y, 0.0% of budgetAmerican Diabetes Association: $1,000 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.

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.

Shell USA Company Fou…Morgan Stanley Global…Charities Aid Foundat…The Bank of America C…Raymond James Charita…National Philanthropi…American Online Givin…American Endowment Fo…Donor Advised Charita…Vanguard Charitable E…Paypal Charitable Giv…Fidelity Investments …
Shell USA Company FoundationTX13.6× affinity5 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Shell USA Company Foundation · Morgan Stanley Global Impact Funding Trust Inc · Charities Aid Foundation America · The Bank of America Charitable Foundation Inc · Raymond James Charitable Endowment Fund · National Philanthropic Trust · American Online Giving Foundation Inc · American Endowment Foundation · Donor Advised Charitable Giving Inc · Vanguard Charitable Endowment Program · Paypal Charitable Giving Fund · Fidelity Investments Charitable Gift Fund

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 Kos Family Foundation funds: left to right is the share of its income from government, bottom to top the share from Kos Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%1%3%6%10%funder's share of their income ↑0%1%3%4%5%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    2report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–5%
    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.

    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 17 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 Kos Family’s filings →

    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 endowment market
    who holds foundation money, and what just moved
    The camps
    funders cluster by geography, not ideology
    By state
    where grant money is based, and what stays home