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· Private foundation

Simon Blattner 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.

$60k
Granted FY2025still arriving
21
Grants FY2025still arriving
2
States reached
$15k
Largest
01What you fundRead
02The needRead
03Your edgeRead
04Your fieldRead
05Through PlinthRead
01What you fund
01100% classified

What you funded, over time

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

Philanthropy$153kArts & Culture$120kEnvironment$90kHealth$81kHuman Services$75kEducation$39kFood & Nutrition$26kYouth Development$19kOther$0
02FY2025 · 21 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k19 grants · $32k
  • $10k–50k2 grants · $28k
$1,000
Median grant
2
States reached
$62k
Total assets
Largest grants
RecipientAmount
SONOMA VALLEY HOSPITAL FOUNDATION$15,000
COMMUNITY FOUNDATION SONOMA COUNTY$12,500
REDWOOD EMPIRE FOOD BANK$7,500
VALLEY OF THE MOON MUSIC FESTIVAL$5,000
BOYS & GIRLS CLUB OF SONOMA$5,000
IMPACT 100 SONOMA$2,000
CONGREGATION SHIR SHALOM$2,000
SONOMA VALLEY MENTORING ALLIANCE$1,000
VINTAGE HOUSE$1,000
CERES COMMUNITY PROJECT$1,000
TRANSCENDENCE THEATRE COMPANY$1,000
10000 DEGREES$1,000
PRAXIS PEACE INSTITUTE$1,000
THE BOOK CLUB OF CALIFORNIA$1,000
GLIDE FOUNDATION$500
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, $47k) land where the poverty rate runs at 9%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.

area typical 10%SONOMA COMMUNITY CENTER: $20k → 9%LA LUZ CENTER: $10k → 9%VINTAGE HOUSE: $5k → 9%VINTAGE HOUSE: $4k → 9%SONOMA COMMUNITY CENTER: $2k → 9%SONOMA COMMUNITY CENTER: $1k → 9%VINTAGE HOUSE: $1k → 9%SONOMA COMMUNITY CENTER: $1k → 9%VINTAGE HOUSE: $1k → 9%SONOMA COMMUNITY CENTER: $500 → 9%FRIENDS IN SONOMA HELPING: $500 → 9%SONOMA COMMUNITY CENTER: $500 → 9%FRIENDS IN SONOMA HELPING: $500 → 9%LA LUZ CENTER: $484 → 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.

95%of every dollar goes to organizations you’ve funded before.
$454k · 34 repeat orgs$22k to everyone else

34 repeat relationships — 18 still active in FY2025, 16 since wound down; 2 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

34
18

Total granted

$454k
$21k

Median revenue growth · since first grant

+24%
+33%

Still filing today

85%
39%

New vs renewed · share of each year

In FY2025, 98% of grant dollars renewed an existing relationship; $1k 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
Arts & CultureEnvironmentHuman ServicesEducationHealthPhilanthropyOther

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

  • SV
    SONOMA VALLEY HOSPITAL FOUNDATION
    6× · 2017–2025 · $80k · revenue +26%
  • SV
    Sonoma Valley Museum of Art
    5× · 2017–2023 · $77k · revenue +40%
  • SL
    SONOMA LAND TRUST
    3× · 2018–2023 · $60k · revenue +334%

Funded once

  • SL
    SONOMA LEAGUE HISTORIC PRESERVATIO
    one grant, 2021 · $10k
  • Northwestern Universitygraduated
    one grant, 2020 · $5k · revenue +33%
  • C
    COFAM
    one grant, 2017 · $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
Sonoma Botanical Garden
—
2
Sonoma Mountain Institute
Environment
3
Sonoma Valley Film Festival

Sonoma valley film society produces the annual international film festival

Arts & Culture
4
Solano Community Foundation

The Solano Community Foundation strengthens Solano County by advancing equity, supporting nonprofit resilience, and expanding access to philanthropy. We serve as a community leader, responsive grantmaker, and trusted partner for donors who…

Philanthropy
5
Sebastopol Center for the Arts

Enriching Lives Through the Arts

Arts & Culture
6
Museum of Sonoma County

The museum of sonoma county engages and inspires our diverse community with art and history exhibitions, collections, and public programs that are inclusive, educational, and relevant.

Arts & Culture
7
Sonora Area Foundation

Strengthens its community through assisting donors, making grants, and providing leadership.

Philanthropy
8
Sonoma County Conservation Action

Sonoma County Conservation Action's mission is to better our quality of life in Sonoma County for all generations, through educating and directly engaging the public on local environmental issues and policies using grassroots organizing.

—
9
Friends of the Sonoma Library
—
10
Symons Family Fund

The Mission of the Symons Family Fund is to benefit, perform the functions of, and carry out the purposes of the Sonora Area Foundation that engage in charitable activities which benefit the residents of Tuolumne County, California.

Human Services
11
San Francisco Film Society

SFFILM is a nonprofit organization whose mission ensures independent voices in film are welcomed, heard, and given the resources to thrive. SFFILM connects and inspires audiences, students and teachers, and filmmakers through our film…

—
12
Sonoma Speaker Series

To foster community education through presentation of non-partisan public lectures on the arts, inspirational individuals and topics, and current events.

Education

For reference, the grantee most central to the portfolio’s shape is Sonoma Valley Community Health Center and the most unlike its peers is Sonoma Valley Authors Festival. 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 backsteadyChinese American Community …International Child WelfareLocal Ballot Measure Commit…Port Labor Relations Commit…Jewish Community Philanthro…
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 35 years old; the field is 18. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number19%3%<5yr13%5%5–10yr19%15%10–20yr20%28%20–35yr16%30%35–55yr13%20%55yr+
THE FIELDby orgYOUR MONEYby value19%1%<5yr13%3%5–10yr19%5%10–20yr20%21%20–35yr16%54%35–55yr13%17%55yr+

The field is 19% startups (under 5 years old) — 3% of your grantees by number, and just 1% of your money.

Closures · last 5 years

The orgs you fund almost never close — 2% lost their exemption, against 11% of the field you don’t fund.

orgs you fund
2%1/44
the rest of the field
11%
952/8,974

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

42 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. 42 of the 56 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)
10
Early backer (in before they grew)
40/42
Grantees still filing
30/42
Grew since you first funded

Where your money sits — by cause, then by grantee

SONOMA COUNTY COMMUNITY FOUNDATION — $132,500 · PhilanthropySONOMA COUNTY COMMUNITY FOUN…JEWISH COMMUNITY FEDERATION OF SAN FRANCISCO THE PENINSULA MARIN & SONOMA — $20,000 · PhilanthropyJEWISH COMMUNITY FEDERATION …+1 more — $3,850 · PhilanthropySonoma Valley Museum of Art — $77,000 · Arts & CultureSonoma Valley Museum …Valley of the Moon Music Festival — $20,000 · Arts & CultureValley of the Moon Mu…SONOMA VALLEY COMMUNITY COMMUNICATIONS INC — $13,500 · Arts & CultureSONOMA VALLEY COMMUNI…+9 more — $8,524 · Arts & Culture+9 moreSONOMA LAND TRUST — $60,000 · EnvironmentSONOMA LAND TRUS…Sonoma Ecology Center — $28,350 · EnvironmentSonoma Ecology C…+3 more — $3,200 · EnvironmentSONOMA VALLEY HOSPITAL FOUNDATION — $80,000 · HealthSONOMA VALLEY …SONOMA COMMUNITY CENTER — $25,250 · Human ServicesSONOMA CO…Vintage House Multi Purpose Senior Center — $10,500 · Human ServicesVintage H…LA LUZ CENTER — $10,484 · Human ServicesLA LUZ CE…THE CERES COMMUNITY PROJECT — $6,000 · Human ServicesTHE CERES…+1 more — $1,000 · Human ServicesCALIFORNIA COLLEGE OF THE ARTS — $32,000 · EducationSonoma Valley Mentoring Alliance — $5,100 · Education10000 DEGREES — $3,100 · Education+1 more — $750 · EducationSONOMA LEAGUE HISTORIC PRESERVATIO — $10,000 · OtherSONOMA LEAGUE H…IMPACT100 SONOMA — $6,000 · OtherIMPACT100 SONOM…The Center for Investigative Reporting Inc — $5,000 · OtherThe Center for …SONOMA VALLEY TEEN SERVICES — $4,600 · OtherSONOMA VALLEY FUND — $3,700 · OtherCONGREGATION SHIR SHALOM — $3,404 · OtherREDWOOD EMPIRE FOOD BANK — $25,000 · OtherREDWOOD EMPIRE …BOYS & GIRLS CLUBS OF SONOMA VALLEY BOYS & GIRLS CLUBS OF SONOMA VALLEY — $12,950 · OtherBOYS & GIRLS CL…Northwestern University — $5,000 · OtherNorthwestern Un…+17 more — $11,689 · Other+17 more
Philanthropy$156,350Arts & Culture$119,024Environment$91,550Health$80,000Human Services$53,234Education$40,950Other$87,343

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 budgetSONOMA COUNTY COMMUNITY FOUNDATION — $132,500 over 3y, 0.3% of budgetSONOMA VALLEY HOSPITAL FOUNDATION — $80,000 over 6y, 0.4% of budgetSonoma Valley Museum of Art — $77,000 over 5y, 1.9% of budgetSONOMA LAND TRUST — $60,000 over 3y, 0.3% of budgetCALIFORNIA COLLEGE OF THE ARTS — $32,000 over 3y, 0.0% of budgetSonoma Ecology Center — $28,350 over 6y, 0.8% of budgetSONOMA COMMUNITY CENTER — $25,250 over 6y, 1.2% of budgetREDWOOD EMPIRE FOOD BANK — $25,000 over 3y, 0.0% of budgetJEWISH COMMUNITY FEDERATION OF SAN FRANCISCO THE PENINSULA MARIN & SONOMA — $20,000 over 4y, 0.0% of budgetValley of the Moon Music Festival — $20,000 over 3y, 3.4% of budgetSONOMA VALLEY COMMUNITY COMMUNICATIONS INC — $13,500 over 2y, 3.4% of budgetBOYS & GIRLS CLUBS OF SONOMA VALLEY BOYS & GIRLS CLUBS OF SONOMA VALLEY — $12,950 over 2y, 0.1% of budgetVintage House Multi Purpose Senior Center — $10,500 over 4y, 0.4% of budgetLA LUZ CENTER — $10,484 over 2y, 0.5% of budgetTHE CERES COMMUNITY PROJECT — $6,000 over 2y, 0.0% of budgetSonoma Valley Mentoring Alliance — $5,100 over 5y, 0.3% of budgetThe Center for Investigative Reporting Inc — $5,000 over 2y, 0.0% of budgetNorthwestern University — $5,000 over 1y, 0.0% of budgetSONOMA VALLEY TEEN SERVICES — $4,600 over 3y, 0.4% of budgetSonoma Valley Education Foundation — $3,850 over 3y, 0.2% of budget10000 DEGREES — $3,100 over 4y, 0.0% of budgetPraxis Peace Institute — $2,250 over 3y, 1.3% of budgetPets Lifeline Inc — $2,100 over 4y, 0.0% of budgetPEPPERWOOD FOUNDATION — $2,000 over 2y, 0.0% of budgetTRANSCENDENCE THEATRE COMPANY — $2,000 over 2y, 0.0% of budgetSonoma Plein Air Foundation — $2,000 over 2y, 0.3% of budgetIntersection for the Arts — $1,100 over 2y, 0.0% of budgetVALLEY OF THE MOON NATURAL HISTORY ASSOCIATION — $1,100 over 2y, 0.1% of budgetTHE BOOK CLUB OF CALIFORNIA — $1,095 over 2y, 0.1% of budgetSebastiani Theatre Foundation Inc — $1,000 over 1y, 0.1% of budgetFriends In Sonoma Helping Inc — $1,000 over 2y, 0.1% of budgetSan Francisco Center for the Book — $750 over 2y, 0.1% of budgetSONOMA OVERNIGHT SUPPORT INC — $600 over 2y, 0.1% of budgetGLIDE FOUNDATION — $500 over 1y, 0.0% of budgetTHE ARTS GUILD OF SONOMA — $200 over 2y, 0.1% of budgetINITIATIVE TO EDUCATE AFGHAN WOMEN — $100 over 1y, 0.1% of budgetGREENBELT ALLIANCEPEOPLE FOR OPEN SPACE — $100 over 1y, 0.0% of budgetASIAN ART MUSEUM FOUNDATION OF SAN FRANCISCO — $69 over 1y, 0.0% of budgetSONOMA VALLEY HISTORICAL SOCIETY — $60 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.

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.

Sonoma County Communi…McNabb FoundationMarin Community Found…The Vadasz Family Fou…Sanderson Family Foun…Women Giving as One I…Sonoma Valley Vintner…Gaia FundSonoma County Vintner…The John & Sandra Lel…Khr McNeely Family Fo…Manitou Fund
Sonoma County Community FoundationCA52× affinity23 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Sonoma County Community Foundation · McNabb Foundation · Marin Community Foundation · The Vadasz Family Foundation · Sanderson Family Foundation · Women Giving as One Inc · Sonoma Valley Vintners & Growers Foundation · Gaia Fund · Sonoma County Vintners Foundation · The John & Sandra Leland Foundation · Khr McNeely Family Foundation · Manitou Fund

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 Simon Blattner 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
’20’21’22’23’24’25
no gov · 10%0%1%3%5%your share of their income ↑0%10%20%30%40%share of the org’s income from government →
    no gov moneyreceives it· size = income
    1get no government money at all
    17report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–40%
    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 Simon Blattner Family Foundation?

    Find your warmest path to Simon Blattner Family 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 56 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