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The Petit Teton Foundation at a glance

· Private foundation

The Petit Teton 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.

$8k
Granted FY2025still arriving
10
Grants FY2025still arriving
1
States reached
$2k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0197% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Environment$37kRecreation & Sports$18kFood & Nutrition$18kAnimals$6kCommunity Improvement$4kCrime & Legal$3kHuman Services$3kHousing & Shelter$2kOther$0
02FY2025 · 10 grants

Where the money goes

Grants by size, and the largest recipients.

$700
Median grant
1
States reached
$183k
Total assets
Largest grants
RecipientAmount
AGRICULTURAL INSTITUTE OF MARIN$1,800
OCCIDENTAL ARTS AND ECOLOGY CENTER$1,800
SF PARKS ALLIANCE$700
MENDOCINO LAND TRUST$700
Individual grant recipient$700
RICHMOND DISTRICT NEIGHBORHOOD CENT$700
CAFF$700
Individual grant recipient$700
EARTH ISLAND INSTITUTE$300
VALLEY VERDE$300
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 (FY17–25, $4k) land where the poverty rate runs at 10%, against an area that typically sits at 7%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 7%VALLEY VERDE: $1k → 8%VALLEY VERDE: $600 → 8%VALLEY VERDE: $300 → 8%Plowshares Peace and Justice Center: $300 → 18%AT THE CROSSROADS: $1k → 10%At the Crossroads: $400 → 10%At the Crossroads: $400 → 10%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.

87%of every dollar goes to organizations it has funded before.
$91k · 26 repeat orgs$13k to everyone else

26 repeat relationships: 8 still active in FY2025, 18 since wound down; 2 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

26
16

Total granted

$91k
$12k

Median revenue growth · since first grant

+76%
+158%

Still filing today

73%
19%

New vs renewed · share of each year

In FY2025, 83% 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
EnvironmentHuman ServicesAnimalsRecreation & SportsCrime & LegalEmploymentOther
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

  • OA
    Occidental Arts and Ecology Center
    9× · 2017–2025 · $13k · revenue +87%
  • AI
    AGRICULTURAL INSTITUTE OF MARIN
    6× · 2018–2025 · $12k · revenue +153%
  • RD
    RICHMOND DISTRICT NEIGHBORHOOD CENTER INC
    7× · 2017–2023 · $6k · revenue +185%

Funded once

  • S(
    STRAW (Students Restoring a Watershed
    one grant, 2021 · $2k
  • SP
    SF PARKS ALLIANCE URBAN SPROUTS
    one grant, 2024 · $1k
  • IG
    Individual grant recipient
    one grant, 2023 · $1k
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
Sustainable Conservation

Sustainable Conservation advances the collaborative stewardship of Californias land, air, and water for the benefit of nature and people. For over three decades, Sustainable Conservation has built coalitions of people with different…

Environment
2
Sonoma Botanical Garden
—
3
Environmental Action Committee of West Marin

To protect and sustain the unique lands, waters, and biodiversity of west marin.

Environment
4
Bay Nature Institute dba Bay Nature Bay Nature Magazine

Bay Nature connects the people of the San Francisco Bay Area to our natural world and motivates people to solve problems with nature in mind. Our vision is that all people have a close relationship with theirnatural world.

Environment
5
Sonoma Mountain Institute
Environment
6
Our City Forest

To cultivate a greener, healthier urban environment and a renewed sense of community by involving silicon valley residents in the understanding, planting, and care of the urban forest.

Environment
7
Sierra Foothill Conservancy

Protect, manage and preserve lands and wildlife having unique natural resources and cultural qualities within and near the foothills of the sierra nevada range.

Environment
8
California Institute for Biodiversity

Create and publish educational materials, conduct professional development, promote awareness, and sponsor research on the spectacular biological diversity of the State of CA.

Education
9
San Francisco Bay Bird Observatory

The San Francisco Bay Bird Observatory is dedicated to promote sustainability in the Bay Area and beyond by engaging communities in avian science, habitat restoration, and education.

Environment
10
California Farmland Trust

The mission of the California Farmland Trust is to help farmers protect the best farmland in the world.

Environment
11
The Wildlands Conservancy

The Wildlands Conservancy's dual mission is to preserve the beauty and biodiversity of the earth and to provide programs so that children may know the wonder and joy of nature.

Environment
12
Nature Collective

Nature collective's mission is to drive a passion for nature for all. we think inclusively and diversely when serving those devoid of nature those who remember nature and want to connect back to it and those who have an affinity with…

Environment
How this is measured
The grantee most central to the portfolio’s shape is Golden Gate National Parks Conservancy; the most unlike its peers is California Wildlife Foundation. 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

22 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. 22 of the 44 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)
11
Early backer (in before they grew)
22/22
Grantees still filing
14/22
Grew since first funded

Where the money sits, by cause and then by grantee

Occidental Arts and Ecology Center: $13,100 · EnvironmentOccidental Arts and Ecology CenterAGRICULTURAL INSTITUTE OF MARIN: $12,050 · EnvironmentAGRICULTURAL INSTITUTE OF MARINMendocino Land Trust: $6,100 · EnvironmentMendocino Land TrustFRIENDS OF THE URBAN FOREST: $3,900 · EnvironmentFRIENDS OF THE URBAN FORESTFORESTS FOREVER FOUNDATION INC: $2,300 · EnvironmentGOLDEN GATE NATIONAL PARKS CONSERVANCY: $2,300 · EnvironmentSLIDE RANCH: $1,600 · EnvironmentEarth Island Institute Inc: $1,500 · Environment+1 more: $300 · EnvironmentUrban Sprouts (San Francisco Parks Trust): $6,150 · OtherUrban Sprouts (San Francisco Parks Trust)RICHMOND DISTRICT NEIGHBORHOOD CENTER INC: $6,125 · OtherRICHMOND DISTRICT NEIGHBORHOOD CENTER INCCOMMUNITY ALLIANCE WITH FAMILY FARMERS: $3,300 · OtherCOMMUNITY ALLIANCE WITH FAMILY FARMERSFriends of the Urban Forest (FUF): $3,000 · OtherFriends of the Urban Forest (FUF)Point Blue Conservation Science - STRAW: $2,800 · OtherPoint Blue Conservation Science - STRAWCAFF: $1,900 · OtherSTRAW (Students Restoring a Watershed: $1,750 · Other+19 more: $15,100 · Other+19 moreSAN FRANCISCO PARKS ALLIANCE: $4,050 · Recreation & SportsMENDOCINO WOODLANDS CAMP ASSOCIATION: $3,400 · Recreation & SportsCALIFORNIA WILDLIFE FOUNDATION: $4,600 · AnimalsPOINT REYES BIRD OBSERVATORY: $1,000 · AnimalsValley Verde: $1,900 · Human ServicesAT THE CROSSROADS: $1,800 · Human ServicesPLOWSHARES PEACE & JUSTICE CENTER: $300 · Human ServicesPROJECT AVARY INC ALTERNATIVE VENTURES FOR AT RISK YOUTH: $2,300 · Crime & LegalPIE RANCH: $1,600 · Employment
Environment$43,150Other$40,125Recreation & Sports$7,450Animals$5,600Human Services$4,000Crime & Legal$2,300Employment$1,600

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

25%50%75%100%$1.0M$10Mgrantee revenue →↑ funder's share of their budgetOccidental Arts and Ecology Center: $13,100 over 9y, 0.1% of budgetAGRICULTURAL INSTITUTE OF MARIN: $12,050 over 6y, 0.1% of budgetRICHMOND DISTRICT NEIGHBORHOOD CENTER INC: $6,125 over 7y, 0.0% of budgetMendocino Land Trust: $6,100 over 9y, 0.1% of budgetCALIFORNIA WILDLIFE FOUNDATION: $4,600 over 6y, 0.0% of budgetSAN FRANCISCO PARKS ALLIANCE: $4,050 over 2y, 0.0% of budgetFRIENDS OF THE URBAN FOREST: $3,900 over 4y, 0.0% of budgetMENDOCINO WOODLANDS CAMP ASSOCIATION: $3,400 over 4y, 0.4% of budgetCOMMUNITY ALLIANCE WITH FAMILY FARMERS: $3,300 over 6y, 0.0% of budgetFORESTS FOREVER FOUNDATION INC: $2,300 over 4y, 0.7% of budgetPROJECT AVARY INC ALTERNATIVE VENTURES FOR AT RISK YOUTH: $2,300 over 6y, 0.1% of budgetGOLDEN GATE NATIONAL PARKS CONSERVANCY: $2,300 over 3y, 0.0% of budgetValley Verde: $1,900 over 3y, 0.1% of budgetAT THE CROSSROADS: $1,800 over 3y, 0.0% of budgetSLIDE RANCH: $1,600 over 4y, 0.1% of budgetPIE RANCH: $1,600 over 4y, 0.0% of budgetEarth Island Institute Inc: $1,500 over 4y, 0.0% of budgetWEAVING EARTH INC: $1,100 over 2y, 0.1% of budgetPOINT REYES BIRD OBSERVATORY: $1,000 over 1y, 0.0% of budgetBAY AREA FINANCIAL EDUCATION FOUNDATION: $900 over 2y, 0.6% of budgetPLOWSHARES PEACE & JUSTICE CENTER: $300 over 1y, 0.0% of budgetAnderson Valley Land Trust: $300 over 1y, 0.7% 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 Occidental Arts and Ecology Center ↗
  • Who funds AGRICULTURAL INSTITUTE OF MARIN ↗
  • Who funds RICHMOND DISTRICT NEIGHBORHOOD CENTER INC ↗
  • Who funds Mendocino Land Trust ↗
  • Who funds CALIFORNIA WILDLIFE FOUNDATION ↗
  • Who funds SAN FRANCISCO PARKS ALLIANCE ↗
  • Who funds FRIENDS OF THE URBAN FOREST ↗
  • Who funds MENDOCINO WOODLANDS CAMP ASSOCIATION ↗
  • Who funds COMMUNITY ALLIANCE WITH FAMILY FARMERS ↗
  • Who funds FORESTS FOREVER FOUNDATION INC ↗
  • Who funds PROJECT AVARY INC ALTERNATIVE VENTURES FOR AT RISK YOUTH ↗
  • Who funds GOLDEN GATE NATIONAL PARKS CONSERVANCY ↗
  • Who funds Valley Verde ↗
  • Who funds AT THE CROSSROADS ↗
  • Who funds SLIDE RANCH ↗
  • Who funds PIE RANCH ↗
  • Who funds Earth Island Institute Inc ↗
  • Who funds WEAVING EARTH INC ↗
  • Who funds POINT REYES BIRD OBSERVATORY ↗
  • Who funds BAY AREA FINANCIAL EDUCATION FOUNDATION ↗

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 San Francisco Fou…Bothin FoundationThe David and Lucile …Marin Community Found…Silicon Valley Commun…Clif Family FoundationMcNabb FoundationImpactassetsincPatagoniaorgCommunity Foundation …Rsf Social Finance IncGordon E and Betty I …
The San Francisco FoundationCA21.7× affinity9 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The San Francisco Foundation · Bothin Foundation · The David and Lucile Packard Foundation · Marin Community Foundation · Silicon Valley Community Foundation · Clif Family Foundation · McNabb Foundation · Impactassetsinc · Patagoniaorg · Community Foundation of Mendocino County · Rsf Social Finance Inc · Gordon E and Betty I Moore 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 Petit Teton Foundation funds: left to right is the share of its income from government, bottom to top the share from The Petit Teton Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%0%1%3%5%funder's share of their income ↑0%13%25%38%50%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    10report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–50%
    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 Petit Teton Foundation?

    Find your warmest path to The Petit Teton 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 44 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 Petit Teton’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