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Thomas H and Donna M Stone Foundation at a glance

· Private foundation

Thomas H and Donna M Stone 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.

$34k
Granted FY2025still arriving
23
Grants FY2025still arriving
6
States reached
$5k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0195% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2018 to 2025.

Arts & Culture$63kScience & Tech$53kInternational$38kEnvironment$25kCivil Rights$20kHealth$17kHousing & Shelter$17kEducation$16kOther$0
02FY2025 · 23 grants

Where the money goes

Grants by size, and the largest recipients.

$1,000
Median grant
6
States reached
$920k
Total assets
Largest grants
RecipientAmount
VOTERIDERS$5,000
HIGHLAND PARK CMTY EARLY LEARNING$5,000
INSIDE CLIMATE NEWS$2,500
CLIMATE REALITY PROJECT$2,500
GENESSYS WORKS CHICAGO$2,500
PLANNED PARENTHOOD OF ILLINOIS$2,000
PLANNED PARENTHOOD OF CALIFORNIA$2,000
PLANNED PARENTHOOD OF COLORADO$2,000
MUSIC FOR FOOD$2,000
WFMT$1,000
WBEZ$1,000
ENRICHING LIVES THROUGH MUSIC$1,000
HIGHLAND PARK COMMUNITY FOUNDATION$1,000
READING BETWEEN THE LINES$1,000
NEW CENTURY CHAMBER ORCHESTRA$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 (FY18–25, $5k) land where the poverty rate runs at 8%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 10%HOW WOMEN LEAD: $3k → 8%HOW WOMEN LEAD: $2k → 8%SAN MIGUEL RESOURCE CENTER: $150 → 7%SAN MIGUEL RESOURCE CENTER: $100 → 7%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

IL
NY
MA
OR
OH
CA
CO
DC
AL
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.

76%of every dollar goes to organizations it has funded before.
$221k · 34 repeat orgs$70k to everyone else

Grantees it renews have grown median revenue +27% since the first grant, against 0% for those funded once.

34 repeat relationships: 10 still active in FY2025, 24 since wound down; 12 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

34
22

Total granted

$221k
$45k

Median revenue growth · since first grant

+27%
0%

Still filing today

68%
55%

New vs renewed · share of each year

In FY2025, 22% of grant dollars renewed an existing relationship; $26k went to new ones.

50%100%’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’18’19’20’21’22’23’24’25
Arts & CultureEnvironmentEducationHealthInternationalCrime & LegalOther
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

  • THE UNION OF CONCERNED SCIENTISTS INC
    2× · 2018–2024 · $51k · revenue +5%
  • M
    MOUNTAINFILM
    2× · 2018–2019 · $17k · revenue +11%
  • IS
    InterMusic SF
    4× · 2018–2022 · $14k · revenue +79%

Funded once

  • IG
    Individual grant recipient
    one grant, 2024 · $15k
  • MP
    Midwest Pesticide Action Center
    one grant, 2018 · $6k
  • IG
    Individual grant recipient
    one grant, 2022 · $5k
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
Opera Parallle

Opera Parallle presents compelling performances of contemporary operas with high musical and dramatic standards, embracing modern aesthetics, creative use of technology, and social relevance as essential to the future of the art form.…

Arts & Culture
2
San Francisco Public Press

The mission of the San Francisco Public Press is to enrich civic life by publishing investigative and solutions journalism that engages diverse audiences and promotes public accountability. The San Francisco Public Press…

Education
3
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…

—
4
Bowdoin International Music Festival

The mission of the Bowdoin International Music Festival is to provide gifted young musicians from around the world with an opportunity to study with world-class artists, and to provide audiences with classical music performed to the…

Arts & Culture
5
San Francisco Contemporary Music Players

San Francisco Music Players produces and performs virtuosic large ensemble concerts of contemporary music featuring works of iconic and emerging composers as well as shining a light on California artists.

—
6
Berkeley Public Library Foundation

The Berkeley Public Library Foundation (BPLF) amplifies the public investment to make a great public library extraordinary. To that end, we provide vital funds and ongoing advocacy to advance the Library's mission, vision, and strategic…

Philanthropy
7
San Francisco Classical Voice

SFCV's mission is to engage audiences, artists, and arts organizations, and forge meaningful connections through music journalism.

Arts & Culture
8
Chicago Sinfonietta Inc

Chicago Sinfonietta is a professional orchestra dedicated to modeling and promoting diversity, inclusion, and both racial and cultural equity in the arts through the universal language of symphonic music. Our core values are built around…

Arts & Culture
9
Stern Grove Festival Association

The mission of SGFA is to make live musical experiences accessible to all. The organization does this by providing ten admission free performances in Sigmund Stern Grove - a facility and park that was donated to the City of San Francisco…

Arts & Culture
10
Sf Partnership

SF Partnership is an organization comprised of SF's leading employers dedicated to supporting an equitable, resilient, and vibrant economy shared by all people working and living in San Francisco. Through education, advocacy, and research,…

—
11
Classical Music Chicago

Presenting free high-quality classical music performances and music education experiences in the Chicago metropolitan area for people of all ages and degrees of musical awareness so they can experience how music enriches life.

Arts & Culture
12
The Climate Center

The Climate Center is a climate and energy policy nonprofit working to rapidly reduce climate pollution at scale, starting in California.

Education
How this is measured
The grantee most central to the portfolio’s shape is Voice of Witness a Nonprofit Public Benefit Corporation; the most unlike its peers is Solar Cookers International. 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

47 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. 47 of the 71 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)
12
Early backer (in before they grew)
45/47
Grantees still filing
32/47
Grew since first funded

Where the money sits, by cause and then by grantee

Individual grant recipient: $15,000 · OtherIndividual grant recipientIndividual grant recipient: $13,000 · OtherIndividual grant recipientJ STREET EDUCATION FUND: $10,500 · OtherJ STREET EDUCATION FUNDCOMMUNITY PARTNERS FOR AFFORDABLE HOUSING: $10,500 · OtherCOMMUNITY PARTNERS FOR AFFORDABLE HOUSINGPEOPLE FOR THE AMERICAN WAY: $7,500 · OtherPEOPLE FOR THE AMERICAN WAYMidwest Pesticide Action Center: $6,000 · OtherTelluride Hospital District: $6,000 · OtherWBEZ: $5,500 · OtherMUSIC4FOOD: $5,100 · OtherHIGHLAND PARK CMTY EARLY LEARNING: $5,000 · OtherIndividual grant recipient: $5,000 · Other+32 more: $51,200 · Other+32 moreTHE UNION OF CONCERNED SCIENTISTS INC: $51,000 · InternationalTHE UNION OF CONCERNED SC…NEW ISRAEL FUND: $12,500 · InternationalNEW ISRAEL FUNDHUMAN RIGHTS WATCH INC: $5,500 · InternationalHUMAN RIGHTS WATCH INCMOUNTAINFILM: $17,000 · Arts & CultureMOUNTAINFILMInterMusic SF: $14,010 · Arts & CultureInterMusic SFART OF THE PIANO: $7,500 · Arts & CultureART OF THE PIANOValley of the Moon Music Festival: $3,000 · Arts & CultureValley of the Moon …New Century Chamber Orchestra: $2,500 · Arts & CultureMERIT SCHOOL OF MUSIC: $2,500 · Arts & CultureDELGANI STRING QUARTET: $2,000 · Arts & CultureSan Francisco Performances Inc: $2,000 · Arts & Culture+4 more: $2,600 · Arts & CultureEVANSTON REBUILDING WAREHOUSE: $12,500 · EnvironmentTHE ALLIANCE FOR CLIMATE PROTECTION: $2,500 · EnvironmentLEAGUE OF CONSERVATION VOTERS EDUCATION FUND: $1,000 · Environment+2 more: $600 · EnvironmentHIGHLAND PARK COMMUNITY NURSERY SCHOOL: $9,000 · EducationTHE RUCKUS SOCIETY: $2,500 · EducationUniversity of San Francisco: $1,000 · EducationBARD COLLEGE: $500 · EducationSOUTHERN POVERTY LAW CENTER INC: $5,000 · Crime & LegalREADING BETWEEN THE LINES NFP: $3,250 · Crime & LegalVOTERIDERS: $5,000 · Civil Rights+1 more: $100 · Civil Rights
Other$140,300International$69,000Arts & Culture$53,110Environment$16,600Education$13,000Crime & Legal$8,250Civil Rights$5,100

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

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetTHE UNION OF CONCERNED SCIENTISTS INC: $51,000 over 2y, 0.1% of budgetMOUNTAINFILM: $17,000 over 2y, 0.3% of budgetInterMusic SF: $14,010 over 4y, 0.6% of budgetEVANSTON REBUILDING WAREHOUSE: $12,500 over 2y, 0.4% of budgetNEW ISRAEL FUND: $12,500 over 4y, 0.0% of budgetCOMMUNITY PARTNERS FOR AFFORDABLE HOUSING: $10,500 over 3y, 0.6% of budgetHIGHLAND PARK COMMUNITY NURSERY SCHOOL: $9,000 over 4y, 0.2% of budgetPEOPLE FOR THE AMERICAN WAY: $7,500 over 2y, 0.1% of budgetMidwest Pesticide Action Center: $6,000 over 1y, 3.3% of budgetHUMAN RIGHTS WATCH INC: $5,500 over 4y, 0.0% of budgetSOUTHERN POVERTY LAW CENTER INC: $5,000 over 4y, 0.0% of budgetLA COCINA: $3,500 over 2y, 0.0% of budgetREADING BETWEEN THE LINES NFP: $3,250 over 5y, 0.9% of budgetValley of the Moon Music Festival: $3,000 over 2y, 0.8% of budgetPlanned Parenthood of Illinois: $3,000 over 2y, 0.0% of budgetTHE RUCKUS SOCIETY: $2,500 over 1y, 0.1% of budgetNew Century Chamber Orchestra: $2,500 over 4y, 0.1% of budgetMERIT SCHOOL OF MUSIC: $2,500 over 1y, 0.0% of budgetDELGANI STRING QUARTET: $2,000 over 2y, 0.4% of budgetMUSIC FOR FOOD INC: $2,000 over 1y, 2.2% of budgetSan Francisco Performances Inc: $2,000 over 3y, 0.0% of budgetThe Pinhead Institute: $1,850 over 4y, 0.2% of budgetLEAGUE OF CONSERVATION VOTERS EDUCATION FUND: $1,000 over 1y, 0.0% of budgetKronos Performing Arts Association: $1,000 over 1y, 0.0% of budgetEnriching Lives Through Music: $1,000 over 1y, 0.0% of budgetTelluride Historical Museum Inc: $1,000 over 2y, 0.2% of budgetEAST BAY COMMUNITY FOUNDATION: $1,000 over 1y, 0.0% of budgetUniversity of San Francisco: $1,000 over 1y, 0.0% of budgetTELLURIDE VOLUNTEER FIRE DEPARTMENT: $600 over 2y, 0.5% of budgetBARD COLLEGE: $500 over 1y, 0.0% of budgetSAN FRANCISCO SYMPHONY: $500 over 1y, 0.0% of budgetSHEEP MOUNTAIN ALLIANCE: $350 over 2y, 0.2% of budgetTELLURIDE ADAPTIVE SPORTS PROGRAM: $300 over 2y, 0.0% of budgetSAN MIGUEL RESOURCE CENTER (SMRC): $250 over 2y, 0.0% of budgetSolar Cookers International: $250 over 1y, 0.0% of budgetFRIENDS OF THE HIGHLAND PARK PUBLIC LIBRARY: $100 over 1y, 0.2% of budgetRagdale Foundation: $100 over 1y, 0.0% of budgetMEDIC ALERT FOUNDATION UNITED STATES: $100 over 1y, 0.0% of budgetVOICE OF WITNESS A NONPROFIT PUBLIC BENEFIT CORPORATION: $100 over 1y, 0.0% of budgetEqual Hope: $100 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.

The San Francisco Fou…The Dalton Family Fou…Marin Community Found…Podolsky Family Found…The Kellcie FundClarence E Heller Cha…The Thomas Phillips a…Telluride FoundationCornet Creek Foundati…The Lisa and Victor N…Salehi Family Foundat…Ebb Point Foundation-…
The San Francisco FoundationCA18× affinity8 shared granteesties to 7 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The San Francisco Foundation · The Dalton Family Foundation · Marin Community Foundation · Podolsky Family Foundation · The Kellcie Fund · Clarence E Heller Charitable Foundation · The Thomas Phillips and Jane Moore Johnson Foundation · Telluride Foundation · Cornet Creek Foundation · The Lisa and Victor Nemeroff Foundation · Salehi Family Foundation · Ebb Point Foundation- Blackrock

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 Thomas H and Donna M Stone Foundation funds: left to right is the share of its income from government, bottom to top the share from Thomas H and Donna M Stone Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 20%0%1%3%5%funder's share of their income ↑0%5%10%15%20%share of the org’s income from government →median 2%
  • Delgani String Quartet: 2% of income from government
no gov moneyreceives it· size = income
2get no government money at all
14report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–20%
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 Thomas H and Donna M Stone Foundation?

Find your warmest path to Thomas H and Donna M Stone 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 71 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 Thomas H and Donna M Stone’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