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· Private foundation

Katharine B Sutphin Foundation Inc

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.

$718k
Granted FY2025still arriving
24
Grants FY2025still arriving
2
States reached
$100k
Largest
01What it funds
0188% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.

Arts & Culture$1.4MHuman Services$278kEducation$251kHousing & Shelter$205kHealth$150kCrime & Legal$35kRecreation & Sports$25kCommunity Improvement$25kOther$0
02FY2025 · 24 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k11 grants · $41k
  • $10k–50k7 grants · $178k
  • $50k–250k6 grants · $500k
$25,000
Median grant
2
States reached
$14M
Total assets
Largest grants
RecipientAmount
BIG CAR MEDIA$100,000
ESKENAZI HEALTH FOUNDATION$100,000
HARRISON CENTER$100,000
HARRISON CENTER$75,000
INDIANAPOLIS ART CENTER$75,000
INTEND INDIANA$50,000
PEACE LEARNING CENTER$35,000
HERRON HIGH SCHOOL$30,000
HARRISON CENTER$27,279
HARRISON CENTER$25,450
THE OAKS ACADEMY$25,000
ARTMIX$25,000
INDY HUMANE SOCIETY$10,000
HERRON HIGH SCHOOL$5,000
COVENANT COLLEGE$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 (FY23–25, $6k) land where the poverty rate runs at 16%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%HEART CHANGE MINISTRIES: $2k → 16%HEART CHANGE MINISTRIES: $2k → 16%HEART CHANGE MINISTRIES: $2k → 16%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.

97%of every dollar goes to organizations it has funded before.
$2.4M · 18 repeat orgs$67k to everyone else

Grantees it renews have grown median revenue +31% since the first grant, against -2% for those funded once.

18 repeat relationships: 12 still active in FY2025, 6 since wound down; 5 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

18
7

Total granted

$2.4M
$12k

Median revenue growth · since first grant

+31%
-2%

Still filing today

72%
71%

New vs renewed · share of each year

In FY2025, 92% of grant dollars renewed an existing relationship; $56k went to new ones.

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

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

’20’21’22’23’24’25
EducationArts & CultureReligionInternationalHousing & ShelterHuman ServicesOther
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

  • IA
    INDIANAPOLIS ART CENTER INC
    3× · 2022–2025 · $300k · revenue +74%
  • HC
    Harrison Center for the Arts Inc
    2× · 2021–2022 · $242k · revenue +59%
  • HH
    HERRON HIGH SCHOOL INC
    5× · 2021–2025 · $153k · revenue +95%

Funded once

  • RP
    REDEEMER PRESBYTERIAN MISSION
    one grant, 2023 · $5k
  • TG
    THRIVE GLOBAL CONSULTING NFPgraduated
    one grant, 2021 · $3k · revenue +60%
  • IH
    IRVINGTON HISTORICAL SOCIETY INC
    one grant, 2021 · $1k · revenue -91%
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
Enroll Indy Inc

Enroll indy helps families choose schools that meet their children's needs by providing a one-stop enrollment process, school information that is relevant and easy to understand, and data to inform school improvement in indianapolis,…

Education
2
Leadership Indianapolis Inc

Educate, Inspire, Connect and Mobilize Community Leaders to serve and strengthen greater Indianapolis.

Public Benefit
3
International School of Indiana Inc

The mission of the international school of indiana is to provide our students with a world-class education that prepares them to be responsible citizens and effective leaders in a rapidly globalizing and interdependent world.

—
4
Independent Colleges of Indiana Inc

The Independent Colleges of Indiana (ICI) advances and strengthens the competitive standing of its 29 member independent, nonprofit, regionally accredited, degree granting colleges and universities. ICI works to ensure opportunity, access,…

Education
5
Indiana Institute of Technology Inc

Indiana tech is a private, independent, and non-denominational university. students are prepared for active participation in the complex, global society of the 21st century and are motivated toward a life of significance and worth. about…

Education
6
The Indianapolis Foundation Inc

To mobilize people, ideas, and investments to make this a community where all individuals have equitable opportunity to reach their full potential - no matter place, race or identity.

Community Improvement
7
International Violin Competition of Indianapolis Inc

The international violin competition of indianapolis (ivci) recognizes, rewards and promotes the world's finest young classical violinists and encourages understanding, appreciation and support of the violin repertoire by a large and…

Arts & Culture
8
Thrival Academy Indy Inc

Thrival academy indy is a humanities-focused high school which exposes students to diverse global perspectives through experiential learning and identity exploration in order to incubate educated global citizens and passionate community…

Education
9
University of Indianapolis

The University of Indianapolis champions lifelong learning through relevant and innovative education that fosters experiential learning, diverse perspectives, service for impact, and a global mindset.

Education
10
Central Indiana Corporate Partnership Inc

Central indiana corporate partnership (cicp) is an alliance of indiana's business and research university leaders coming together to foster long-term prosperity for the region. cicp's mission is to transform the economy of indiana in order…

Community Improvement
11
Kipp Indianapolis Inc

KIPP Indy is a network of tuition-free, open-enrollment, college preparatory, public charter schools. KIPP Indy's mission is to create a network of schools that provides educationally underserved children with a rigorous education that…

Education
12
Covenant Christian Schools of Indianapolis Inc

The school's objective is to provide an excellent, christ-centered education, equipping students for a life of scholarship, leadership, and service.

Education
How this is measured
The grantee most central to the portfolio’s shape is Peace Learning Center Inc; the most unlike its peers is Friends of Belmont Beach Inc. 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

20 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. 20 of the 30 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)
5
Early backer (in before they grew)
20/20
Grantees still filing
11/20
Grew since first funded

Where the money sits, by cause and then by grantee

Harrison Center: $859,273 · OtherHarrison Center+12 more: $61,500 · Other+12 moreINDIANAPOLIS ART CENTER INC: $300,000 · Arts & CultureINDIANAPOLIS ART CENTER INCBIG CAR MEDIA INC: $160,000 · Arts & CultureBIG CAR MEDIA INCINDIANAPOLIS FILM PROJECT INC: $140,000 · Arts & CultureINDIANAPOLIS FILM PROJECT INCARTMIX INC: $51,500 · Arts & CultureARTMIX INC+1 more: $1,000 · Arts & CultureHERRON HIGH SCHOOL INC: $152,500 · EducationHERRON HIGH…The Oaks Academy Inc: $68,000 · EducationThe Oaks Ac…COVENANT COLLEGE: $24,000 · EducationCOVENANT CO…+4 more: $6,500 · EducationHarrison Center for the Arts Inc: $241,500 · ReligionHarrison Ce…+1 more: $500 · ReligionINTEND INDIANA INC: $205,000 · Housing & ShelterINTEND IN…Eskenazi Health Foundation Inc: $150,000 · HealthPEACE LEARNING CENTER INC: $35,000 · Crime & Legal
Other$920,773Arts & Culture$652,500Education$251,000Religion$242,000Housing & Shelter$205,000Health$150,000Crime & Legal$35,000

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 budgetINDIANAPOLIS ART CENTER INC: $300,000 over 3y, 2.8% of budgetHarrison Center for the Arts Inc: $241,500 over 2y, 15% of budgetINTEND INDIANA INC: $205,000 over 3y, 1.9% of budgetBIG CAR MEDIA INC: $160,000 over 3y, 1.3% of budgetHERRON HIGH SCHOOL INC: $152,500 over 5y, 0.2% of budgetEskenazi Health Foundation Inc: $150,000 over 2y, 0.2% of budgetINDIANAPOLIS FILM PROJECT INC: $140,000 over 2y, 7.1% of budgetThe Oaks Academy Inc: $68,000 over 4y, 0.2% of budgetARTMIX INC: $51,500 over 3y, 3.1% of budgetPEACE LEARNING CENTER INC: $35,000 over 1y, 1.5% of budgetCOVENANT COLLEGE: $24,000 over 5y, 0.0% of budgetHEART CHANGE MINISTRIES INC: $6,000 over 3y, 0.3% of budgetFriends of Belmont Beach Inc: $5,000 over 1y, 8.2% of budgetIndiana University Foundation: $4,000 over 2y, 0.0% of budgetTHRIVE GLOBAL CONSULTING NFP: $3,000 over 1y, 2.9% of budgetINDIANAPOLIS THEOLOGICAL SEMINARY: $1,000 over 2y, 0.1% of budgetIRVINGTON HISTORICAL SOCIETY INC: $1,000 over 1y, 0.1% of budgetINSTITUTE FOR QUALITY EDUCATION INC: $1,000 over 1y, 0.0% of budgetCIRCLE CITY FELLOWS INC: $500 over 1y, 0.4% of budgetTHE FIELD SCHOOL: $500 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.

Lilly Endowment IncIN29.8× affinity13 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Lilly Endowment Inc · Central Indiana Community Foundation Inc · The Indianapolis Foundation Inc · Nicholas H Noyes Jr Memorial Foundation · Allen Whitehill Clowes Charitable Foundation Inc · Richard M Fairbanks Foundation Inc · Eugene & Marilyn Glick Foundation · Ayres Foundation Inc · The Palmer Family Foundation · Arts Council of Indianapolis Inc · Indiana Humanities Council Inc · Christel DeHaan Family Foundation Inc

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 Katharine B Sutphin Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Katharine B Sutphin Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%1%4%8%15%funder's share of their income ↑0%4%8%11%15%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    8report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–15%
    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 Katharine B Sutphin Foundation Inc?

    Find your warmest path to Katharine B Sutphin Foundation Inc 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 30 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

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