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The Koehler Mahlstedt Family Foundation at a glance

· Private foundation

The Koehler Mahlstedt Family Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$282k
Granted FY2025still arriving
13
Grants FY2025still arriving
8
States reached
$75k
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, FY2017 to 2024.

Education$453kEnvironment$451kAnimals$183kArts & Culture$78kFood & Nutrition$37kYouth Development$17kReligion$15kCommunity Improvement$12kOther$0
02FY2025 · 13 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k1 grant · $5k
  • $10k–50k10 grants · $152k
  • $50k–250k2 grants · $125k
$10,000
Median grant
8
States reached
$1.9M
Total assets
Largest grants
RecipientAmount
MCCALLUM THEATRE FOUNDATION INC$75,000
MYRIAD USA INC$50,250
ARMAND HAMMER UNITED WORLD COLLEGE OF THE AMERICAN WEST (UWC - USA)$37,000
SAVE THE REDWOODS LEAGUE$25,000
SAINT JAMES SCHOOL$15,000
CLEAN UP THE CAYES (DBA - CLEAN UP THE LAKE)$15,000
POSITIVI-TEE INC$10,000
VOLUNTEER CENTERS OF SANTA CRUZ COUNTY$10,000
THE LIVING DESERT$10,000
SCRIPPS HEALTH$10,000
DHODY RESEARCH INSTITUTE$10,000
AMERICAN FRIENDS OF OUR ARMED FORCES$10,000
SOUTHERN CALIFORNIA LABRADOR RETRIEVER RESCUE$5,000
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 (FY17–24, $18k) land where the poverty rate runs at 10%, against an area that typically sits at 10%. 97% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%HUNGER AT HOME: $500 → 8%EPISCOPAL RELIEF & DEVELOPMENT: $500 → 17%EDDY HOUSE: $5k → 10%EDDY HOUSE: $5k → 10%EDDY HOUSE: $5k → 10%EDDY HOUSE: $2k → 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.

Which US states its grants reach

WA
NY
NV
CA
CO
MD
AZ
NM
TX
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.

84%of every dollar goes to organizations it has funded before.
$1.3M · 14 repeat orgs$238k to everyone else

Grantees it renews have grown median revenue +47% since the first grant, against +28% for those funded once.

14 repeat relationships: 5 still active in FY2025, 9 since wound down; 7 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

14
16

Total granted

$1.3M
$126k

Median revenue growth · since first grant

+47%
+28%

Still filing today

86%
81%

New vs renewed · share of each year

In FY2025, 52% of grant dollars renewed an existing relationship; $112k 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
AnimalsHuman ServicesArts & CultureEnvironmentPublic BenefitEducationOther
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

  • LD
    LIVING DESERT THE
    4× · 2021–2025 · $290k · revenue +47%
  • SD
    SAN DIEGO HUMANE SOCIETY AND SPCA
    3× · 2019–2024 · $127k · revenue +60%
  • MT
    McCallum Theatre Foundation Inc
    2× · 2023–2025 · $98k · revenue +260%

Funded once

  • TS
    THE SAN DIEGO SYMPHONY ORCHESTRA ASSOCIATION
    one grant, 2022 · $50k · revenue -43%
  • ZS
    ZOOLOGICAL SOCIETY OF SAN DIEGOgraduated
    one grant, 2017 · $25k · revenue +28%
  • AE
    Aspen Entrepreneurs Corporation
    one grant, 2017 · $12k
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
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
2
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
3
Society for the Prevention of Cruelty to Animals for Monterey County

The SPCA Monterey County's Mission is assuring compassionate treatment of all animals through rescue, rehabilitation, protection and education. The SPCA shelters homeless, neglected, and abused pets, including dogs, cats, horses, exotic…

Animals
4
Conservation Society of California

Through management of oakland zoo, the conservation society of california deepens connection with animals, saves wildlife, and inspires champions for the natural world.

Animals
5
Save Mount Diablo

Save mount diablo's mission is to preserve mount diablo's peaks, surrounding foothills, and watersheds; and its sustaining diablo range, through land acquisition and preservation strategies designed to protect the mountain's natural…

Recreation & Sports
6
Denver Zoological Foundation

Inspiring communities to save wildlife for future generations.

Animals
7
Society for the Prevention of Cruelty to Animals of Northern Nv

Our mission is to be an innovative regional leader in responsible treatment of homeless dogs and cats, primarily through their rescue and placement in forever loving homes and by promoting spaying and neutering to control pet…

Unclassified
8
Sempervirens Fund

To ensure coast redwood forests in the santa cruz mountains thrive for generations to come. since 1900, sempervirens has protected more than 36,000 acres. learn more about our mission, vision, and strategic plan through 2030 at:…

Environment
9
Environmental Defense Center

The organization protects and enhances the local environment through education, advocacy and legal action.

Crime & Legal
10
Humane Society Silicon Valley

At humane society silicon valley, our mission is to save lives, keep families together, and create a better future for pets and their people.(see schedule o for continuation)

Animals
11
Arizona-Sonora Desert Museum

We inspire people to live in harmony with the natural world by fostering love, appreciation, and understanding of the sonoran desert.

Arts & Culture
12
American Humane Association

Founded in 1877, american humane association, dba american humane society (american humane) is committed to ensuring the safety, welfare and well-being of animals. our leadership programs are first to serve in promoting and nurturing the…

Animals
How this is measured
The grantee most central to the portfolio’s shape is Humane Society of Sonoma County; the most unlike its peers is Aspen Entrepreneurs Corporation. 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

35 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. 35 of the 39 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)
9
Early backer (in before they grew)
33/35
Grantees still filing
25/35
Grew since first funded

Where the money sits, by cause and then by grantee

THE ARMAND HAMMER UNITED WORLD COLLEGE OF THE AMER: $372,575 · EducationTHE ARMAND HAMMER UNITED WORLD COL…SAINT JAMES SCHOOL: $95,000 · EducationSAINT JAMES SCHOOLLIVING DESERT THE: $290,000 · EnvironmentLIVING DESERT THECLEAN UP THE CAYES dba CLEAN UP THE LAKE: $50,000 · EnvironmentCLEAN UP THE CAYES dba CLE…SAVE THE REDWOODS LEAGUE: $25,000 · EnvironmentSAVE THE REDWOODS LEAGUESAN DIEGO HUMANE SOCIETY AND SPCA: $127,000 · AnimalsSAN DIEGO HUMAN…ZOOLOGICAL SOCIETY OF SAN DIEGO: $25,000 · AnimalsZOOLOGICAL SOCI…MONTEREY BAY AQUARIUM FOUNDATION: $25,000 · AnimalsMONTEREY BAY AQ…SOUTHERN CALIFORNIA LABRADOR RETRIEVER RESCUE: $18,000 · AnimalsSOUTHERN CALIFO…+4 more: $12,500 · Animals+4 moreIndividual grant recipient: $111,000 · OtherIndividual grant rec…ARMAND HAMMER UNITED WORLD COLLEGE OF THE AMERICAN WEST (UWC - USA): $37,000 · OtherARMAND HAMMER UNITED…ENCINITAS COMMUNITY GARDEN: $25,000 · OtherENCINITAS COMMUNITY …Aspen Entrepreneurs Corporation: $12,000 · OtherVOLUNTEER CENTERS OF SANTA CRUZ COUNTY: $10,000 · OtherAMERICAN FRIENDS OF OUR ARMED FORCES WALT VANBENTHYSEN: $10,000 · OtherPOSITIVI-TEE INC: $10,000 · OtherCITYTEAM MINISTRIES: $14,960 · OtherCITYTEAM MINISTRIESDHODY RESEARCH INSTITUTE: $10,000 · OtherSCRIPPS HEALTH: $10,000 · Other+8 more: $28,955 · Other+8 moreMcCallum Theatre Foundation Inc: $98,350 · Arts & CultureMcCallum Th…THE SAN DIEGO SYMPHONY ORCHESTRA ASSOCIATION: $50,000 · Arts & CultureTHE SAN DIE…+1 more: $5,000 · Arts & CultureMYRIAD USA INC: $50,250 · InternationalEDDY HOUSE: $17,000 · Human ServicesSIERRA SENIOR SERVICES DBA MEALS ON WHEELS TAHOE: $8,600 · Human Services+2 more: $1,000 · Human Services
Education$467,575Environment$365,000Animals$207,500Other$278,915Arts & Culture$153,350International$50,250Human Services$26,600

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 budgetTHE ARMAND HAMMER UNITED WORLD COLLEGE OF THE AMER: $372,575 over 8y, 0.2% of budgetLIVING DESERT THE: $290,000 over 4y, 0.8% of budgetSAN DIEGO HUMANE SOCIETY AND SPCA: $127,000 over 3y, 0.1% of budgetMcCallum Theatre Foundation Inc: $98,350 over 2y, 11% of budgetSAINT JAMES SCHOOL: $95,000 over 8y, 0.1% of budgetTHE SAN DIEGO SYMPHONY ORCHESTRA ASSOCIATION: $50,000 over 1y, 0.1% of budgetCLEAN UP THE CAYES dba CLEAN UP THE LAKE: $50,000 over 3y, 3.2% of budgetZOOLOGICAL SOCIETY OF SAN DIEGO: $25,000 over 1y, 0.0% of budgetMONTEREY BAY AQUARIUM FOUNDATION: $25,000 over 5y, 0.0% of budgetSAVE THE REDWOODS LEAGUE: $25,000 over 1y, 0.0% of budgetSOUTHERN CALIFORNIA LABRADOR RETRIEVER RESCUE: $18,000 over 4y, 4.3% of budgetEDDY HOUSE: $17,000 over 4y, 0.3% of budgetCITYTEAM MINISTRIES: $14,960 over 3y, 0.0% of budgetAspen Entrepreneurs Corporation: $12,000 over 1y, 9.1% of budgetVOLUNTEER CENTERS OF SANTA CRUZ COUNTY: $10,000 over 1y, 0.1% of budgetSCRIPPS HEALTH: $10,000 over 1y, 0.0% of budgetSIERRA SENIOR SERVICES DBA MEALS ON WHEELS TAHOE: $8,600 over 3y, 0.6% of budgetInland Empire Community Foundation: $5,155 over 1y, 0.0% of budgetBURN PITS 360: $5,000 over 1y, 1.9% of budgetLake Tahoe Wildlife Care Inc: $5,000 over 1y, 0.5% of budgetSOUTHWEST OASIS LABRADOR RESCUE INC: $5,000 over 1y, 2.0% of budgetGARY SINISE FOUNDATION: $5,000 over 1y, 0.0% of budgetDIAMOND PEAK SKI EDUCATION FOUNDATION: $3,000 over 2y, 0.5% of budgetHUMANE SOCIETY OF SONOMA COUNTY: $2,000 over 1y, 0.0% of budgetSECOND HARVEST OF SILICON VALLEY: $1,800 over 1y, 0.0% of budgetALAMEDA COUNTY COMMUNITY FOOD BANK: $1,000 over 1y, 0.0% of budgetEPISCOPAL RELIEF AND DEVELOPMENT: $500 over 1y, 0.0% of budgetHUNGER AT HOME: $500 over 1y, 0.0% of budgetPet Network Humane Society: $500 over 1y, 0.1% 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.

Tahoe Community Found…Morgan Stanley Global…The Bank of America C…The Pfizer Foundation…The Blackbaud Giving …Network for GoodAmerican Online Givin…Donor Advised Charita…American Endowment Fo…National Philanthropi…Paypal Charitable Giv…Vanguard Charitable E…
Tahoe Community FoundationNV15.5× affinity5 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Tahoe Community Foundation · Morgan Stanley Global Impact Funding Trust Inc · The Bank of America Charitable Foundation Inc · The Pfizer Foundation Inc · The Blackbaud Giving Fund · Network for Good · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · American Endowment Foundation · National Philanthropic Trust · Paypal Charitable Giving Fund · Vanguard Charitable Endowment Program

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 Koehler Mahlstedt Family Foundation funds: left to right is the share of its income from government, bottom to top the share from The Koehler Mahlstedt Family Foundation. 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%1%3%4%5%share of the org’s income from government →
    no gov moneyreceives it· size = income
    1get no government money at all
    12report 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 39 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 Koehler Mahlstedt 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