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Plinth

· Private foundation

Leo Fontana Family Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$25k
Granted FY2025still arriving
4
Grants FY2025still arriving
2
States reached
$10k
Largest
01What you fund
0190% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20172025.

Food & Nutrition$113kPhilanthropy$64kHealth$62kHuman Services$49kEducation$29kArts & Culture$25kReligion$24kAnimals$16kOther$0
02FY2025 · 4 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k3 grants · $15k
  • $10k–50k1 grant · $10k
$5,000
Median grant
2
States reached
$1.3M
Total assets
Largest grants
RecipientAmount
CONTRA COSTA FOOD BANK$10,000
MEALS ON WHEELS$5,000
PLANNED PARENTHOOD$5,000
SHARE THE SPIRIT$5,000
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, $48k) land where the poverty rate runs at 10%, against an area that typically sits at 8%. 93% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 8%GUIDE DOGS FOR THE BLIND: $1k → 8%SHARE THE SPIRIT: $5k → 11%GUIDE DOGS FOR THE BLIND: $1k → 8%CARING CHOICES: $2k → 18%SHARE THE SPIRIT: $5k → 11%GUIDE DOGS FOR THE BLIND: $1k → 8%SHARE THE SPIRIT: $5k → 11%GUIDE DOGS FOR THE BLIND: $250 → 8%SHARE THE SPIRIT: $5k → 11%SHARE THE SPIRIT: $5k → 11%AMERICAN RED CROSS: $5k → 9%AMERICAN RED CROSS: $2k → 9%AMERICAN RED CROSS: $2k → 9%AMERICAN RED CROSS: $2k → 9%HOSPICE OF THE EAST BAY: $1k → 9%HOSPICE OF THE EAST BAY: $1k → 9%AMERICAN RED CROSS: $1k → 9%AMERICAN RED CROSS: $1k → 9%AMERICAN RED CROSS: $1k → 9%HOSPICE OF THE EAST BAY: $1k → 9%HOSPICE OF THE EAST BAY: $1k → 9%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.

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.

88%of every dollar goes to organizations you’ve funded before.
$395k · 40 repeat orgs$55k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +40% since the first grant, against +33% for the ones you funded once.

40 repeat relationships — 4 still active in FY2025, 36 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

40
32

Total granted

$395k
$55k

Median revenue growth · since first grant

+40%
+33%

Still filing today

43%
31%

New vs renewed · share of each year

In FY2025, 100% of grant dollars renewed an existing relationship; $0 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
Human ServicesArts & CultureHealthEducationPhilanthropyInternationalOther

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

  • ST
    SHARE THE SPIRIT FOUNDATION INC
    5× · 2018–2025 · $25k · revenue +83%
  • AN
    American National Red Cross & Its Constituent Chapters and Branches
    7× · 2017–2024 · $14k · revenue +46%
  • SF
    SAN FRANCISCO AIDS FOUNDATION
    6× · 2017–2023 · $7k · revenue +40%

Funded once

  • HR
    HOLY ROSARY SCHOOL
    one grant, 2017 · $20k
  • SH
    SUTTER HEALTH PHILANTHROPY
    one grant, 2024 · $5k
  • UW
    UNITED WAY NO CALIF
    one grant, 2018 · $2k

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
John Muir Health

The mission of john muir is to improve the health of the communities we serve with quality and compassion.

Health
2
Sutter Bay Hospitals

MISSION STATEMENT: MISSION: CARING FOR OUR PATIENTS FIRST AND OUR PEOPLE ALWAYS. VISION: TO BE THE MOST COMPREHENSIVE, INTEGRATED AND CONNECTED HEALTH SYSTEM FOR GETTING AND STAYING WELL. VALUES: EXCELLENCE - We deliver high-quality,…

Health
3
Sutter Bay Medical Foundation

Mission statement: mission: caring for our patients first and our people always. vision: to be the most comprehensive, integrated and connected health system for getting and staying well. values: excellence - we deliver high-quality,…

Health
4
Antioch Community Foundation Attn Keith Archuleta
Philanthropy
5
Transportation Alternatives for Marin
Public Benefit
6
California Human Trafficking Investigators and Prosecuters Asso
Crime & Legal
7
Sonoma Botanical Garden
8
The San Francisco Society for the Prevention of Cruelty to Animals

To ensure every companion animal has access to quality medical care, compassionate shelter, and a loving home.

Animals
9
Cal Med Foundation
Education
10
People for the Ethical Treatment of Animals Inc

Protection of animal rights

Animals
11
California ReLeaf

California Releaf's mission is to empower grassroots efforts and build strategic partnerships that preserve, protect and enhance California's urban and community forests.

Environment
12
Monterey Bay Aquarium Research Institute

For reference, the grantee most central to the portfolio’s shape is Choice in Aging and the most unlike its peers is Antioch Schools Education Foundation. 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 backsteadyPolicy Research and Systems…Community Health ServicesBusiness & Economic Develop…K-12 Schools and Youth Educ…Pet Rescue and CareInternational Development E…Disability Services & Suppo…
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 43 years old; the field is 15. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number23%0%<5yr15%0%5–10yr19%10%10–20yr18%35%20–35yr13%21%35–55yr12%35%55yr+
THE FIELDby orgYOUR MONEYby value23%0%<5yr15%0%5–10yr19%7%10–20yr18%31%20–35yr13%28%35–55yr12%34%55yr+

The field is 23% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close 0.0% lost their exemption, against 12% of the field you don’t fund.

orgs you fund
0.0%0/31
the rest of the field
12%
3,091/25,090

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

29 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 20172025, not grant rows in a single year — so this will not match the grant count on the cover. 29 of the 73 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.

0
Load-bearing (≥25% of a budget)
8
Early backer (in before they grew)
28/29
Grantees still filing
20/29
Grew since you first funded

Where your money sits — by cause, then by grantee

VARIOUS CHARITIES — $60,517 · OtherVARIOUS CHARITIESMEALS ON WHEELS — $46,250 · OtherMEALS ON WHEELSCONTRA COSTA COUNTY FOOD BANK — $39,300 · OtherCONTRA COSTA COUNTY FOOD BANKPLANNED PARENTHOOD — $28,000 · OtherPLANNED PARENTHOODHOLY ROSARY SCHOOL — $20,000 · OtherHOLY ROSARY SCHOOLCONTRA COSTA FOOD BANK — $18,000 · OtherHOLY ROSARY CHURCH — $15,605 · OtherANTIOCH HISTORICAL SOCIETY — $14,205 · Other+48 more — $129,582 · Other+48 moreSHARE THE SPIRIT FOUNDATION INC — $25,000 · Human ServicesSHARE THE SP…American National Red Cross & Its Constituent Chapters and Branches — $14,000 · Human ServicesAmerican Nat…EAST BAY INTEGRATED CARE INC — $4,000 · Human ServicesEAST BAY INT…GUIDE DOGS FOR THE BLIND INC — $3,250 · Human ServicesGUIDE DOGS F…Caring Choices Inc — $2,000 · Human ServicesEAST BAY SPCA — $5,000 · AnimalsCONSERVATION SOCIETY OF CALIFORNIA — $5,000 · AnimalsCELEBRATE ANTIOCH FOUNDATION — $3,500 · Arts & CultureLINDSAY WILDLIFE MUSEUM — $3,000 · Arts & CultureANTIOCH RIVERTOWN JAMBOREE — $1,000 · Arts & CultureCHOICE IN AGING — $3,000 · HealthAN ELDERLY WISH FOUNDATION — $2,200 · HealthAmerican Heart Association Inc — $500 · HealthDELTA LEARNING CENTER — $4,000 · EducationPRISON UNIVERSITY PROJECT INC DBA MOUNT TAMALPAIS COLLEGE — $1,000 · EducationThe Ruth Bancroft Garden Inc — $3,000 · EnvironmentJohn Muir Land Trust prev Muir Heritage Land Trust — $1,050 · Environment
Other$371,459Human Services$48,250Animals$10,000Arts & Culture$7,500Health$5,700Education$5,000Environment$4,050

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

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetSHARE THE SPIRIT FOUNDATION INC — $25,000 over 5y, 15% of budgetANTIOCH HISTORICAL SOCIETY — $14,205 over 5y, 4.3% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches — $14,000 over 7y, 0.0% of budgetSAN FRANCISCO AIDS FOUNDATION — $7,000 over 6y, 0.0% of budgetEQUAL RIGHTS ADVOCATES — $6,000 over 3y, 0.1% of budgetEAST BAY SPCA — $5,000 over 5y, 0.0% of budgetCONSERVATION SOCIETY OF CALIFORNIA — $5,000 over 5y, 0.0% of budgetDELTA LEARNING CENTER — $4,000 over 4y, 1.2% of budgetEAST BAY INTEGRATED CARE INC — $4,000 over 4y, 0.0% of budgetCELEBRATE ANTIOCH FOUNDATION — $3,500 over 3y, 2.8% of budgetGUIDE DOGS FOR THE BLIND INC — $3,250 over 4y, 0.0% of budgetThe Ruth Bancroft Garden Inc — $3,000 over 3y, 0.1% of budgetDELTA VETERANS GROUP — $3,000 over 2y, 1.6% of budgetCHOICE IN AGING — $3,000 over 3y, 0.0% of budgetLINDSAY WILDLIFE MUSEUM — $3,000 over 3y, 0.0% of budgetAN ELDERLY WISH FOUNDATION — $2,200 over 4y, 1.2% of budgetANTIOCH COMMUNITY SCHOLARSHIP FUND — $2,000 over 1y, 4.9% of budgetCaring Choices Inc — $2,000 over 1y, 0.1% of budgetJohn Muir Land Trust prev Muir Heritage Land Trust — $1,050 over 1y, 0.0% of budgetDELTA ADVOCACY FOUNDATION — $1,000 over 1y, 1.7% of budgetMAUI UNITED WAY — $1,000 over 1y, 0.1% of budgetSMILE TRAIN INC — $1,000 over 1y, 0.0% of budgetPRISON UNIVERSITY PROJECT INC DBA MOUNT TAMALPAIS COLLEGE — $1,000 over 1y, 0.0% of budgetANTIOCH SCHOOLS EDUCATION FOUNDATION — $750 over 1y, 4.0% of budgetAmerican Heart Association Inc — $500 over 1y, 0.0% of budgetINTERNATIONAL VISION VOLUNTEERS — $500 over 2y, 0.2% of budgetOPERATION SMILE INC — $240 over 1y, 0.0% of budgetANTIOCH CHAMBER OF COMMERCE CONVENTION & VISITORS BUREAU — $225 over 1y, 0.1% 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.

  • Who funds SHARE THE SPIRIT FOUNDATION INC
  • Who funds ANTIOCH HISTORICAL SOCIETY
  • Who funds American National Red Cross & Its Constituent Chapters and Branches
  • Who funds SAN FRANCISCO AIDS FOUNDATION
  • Who funds EQUAL RIGHTS ADVOCATES
  • Who funds EAST BAY SPCA
  • Who funds CONSERVATION SOCIETY OF CALIFORNIA
  • Who funds DELTA LEARNING CENTER
  • Who funds EAST BAY INTEGRATED CARE INC
  • Who funds CELEBRATE ANTIOCH FOUNDATION
  • Who funds GUIDE DOGS FOR THE BLIND INC
  • Who funds The Ruth Bancroft Garden Inc
  • Who funds DELTA VETERANS GROUP
  • Who funds CHOICE IN AGING
  • Who funds LINDSAY WILDLIFE MUSEUM
  • Who funds AN ELDERLY WISH FOUNDATION

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.

East Bay Community FoundationCA24.1× affinity10 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: East Bay Community Foundation · Marin Community Foundation · Antioch Community Foundation Attn Keith Archuleta · The San Francisco Foundation · Gordon E and Betty I Moore Foundation · William a Kerr Foundation · Ibm International Foundation · Shell USA Company Foundation · Impactassetsinc · The Blackbaud Giving Fund · Silicon Valley Community Foundation · Morgan Stanley Global Impact Funding Trust Inc

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 Leo Fontana Family 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
202122232425
no gov · 00%1%5%11%20%your share of their income ↑0%25%50%75%100%share of the org’s income from government
    no gov moneyreceives it· size = income
    0get 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
    typical government reliance, FY2025

    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.

    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 73 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