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Mark and Martha Slaughter Family Foundation Inc at a glanceAlso receives grants: funding profile →

· Private foundation

Mark and Martha Slaughter Family Foundation Inc

THE FOUNDATION WAS FORMED TO PROMOTE AND SUPPORT CARDIOVASCULAR AND THORACIC SURGERY EDUCATION ALONG WITH CLINICAL AND BASIC SCIENCE RESEARCH FOR PHYSICIANS, SCIENTISTS, NURSES AND OTHER MEDICAL PERSONNEL.

$17k
Granted FY2025still arriving
5
Grants FY2025still arriving
3
States reached
$5k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2023 to 2025.

Health$16kArts & Culture$14kEnvironment$11kScience & Tech$5kRecreation & Sports$2kPhilanthropy$1kEducation$1k
02FY2025 · 5 grants

Where the money goes

Grants by size, and the largest recipients.

$5,000
Median grant
3
States reached
$481k
Total assets
Largest grants
RecipientAmount
ISHLT FOUNDATION$5,000
BERNHEIM ARBORETUM & RESEARCH FOREST$5,000
PURDUE RESEARCH FOUNDATION$5,000
AMERICAN HEART ASSOCIATION$1,000
LOUISVILLE COLLEGIATE SCHOOL$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:

Dollar for dollar, its grants (FY23–25) land where the poverty rate runs at 14%, against an area that typically sits at 12%. 75% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 12%PURDUE RESEARCH FOUNDATION: $5k → 19%ISHLT FOUNDATION: $5k → 14%BERNHEIM ARBORETUM & RESEARCH FOREST: $5k → 9%KENTUCKY HORSE PARK FOUNDATION: $2k → 15%LOUISVILLE COLLEGIATE SCHOOL: $1k → 15%ISHLT FOUNDATION: $5k → 14%BERNHEIM ARBORETUM & RESEARCH FOREST: $5k → 9%KMAC MUSEUM: $2k → 15%BERNMHEIM ARBORETUM & RESEARCH FOREST: $1k → 9%SPEED ART MUSEUM: $10k → 15%SPEED ART MUSEUM: $2k → 15%IMPACT 100 LOUISVILLE: $1k → 15%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.

80%of every dollar goes to organizations it has funded before.
$39k · 4 repeat orgs$10k to everyone else

Grantees it renews have grown median revenue +10% since the first grant, against -1% for those funded once.

4 repeat relationships: 3 still active in FY2025, 1 since wound down; 2 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

4
3

Total granted

$39k
$4k

Median revenue growth · since first grant

+10%
-1%

Still filing today

100%
100%

New vs renewed · share of each year

In FY2025, 65% of grant dollars renewed an existing relationship; $6k went to new ones.

50%100%’23’24’25
RenewedFirst-time

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

’23’24’25
Arts & CulturePhilanthropyEducationEnvironmentHealthRecreation & SportsOther
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

  • SA
    SPEED ART MUSEUM
    2× · 2023–2024 · $12k · revenue +86%
  • IW
    ISAAC W BERNHEIM FOUNDATION
    3× · 2023–2025 · $11k · revenue +0%
  • AH
    American Heart Association Inc
    2× · 2024–2025 · $6k · revenue +10%

Funded once

  • KH
    KENTUCKY HORSE PARK FOUNDATION INC
    one grant, 2024 · $2k · revenue -1%
  • KM
    KMAC MUSEUM
    one grant, 2024 · $2k · revenue -1%
  • IL
    IMPACT100 LOUISVILLE INC
    one grant, 2024 · $1k · revenue 0%
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
Indiana University Health Frankfort Inc

Lead the transformation of healthcare through quality, innovation & education, and make Indiana one of the nation's healthiest states.

Health
2
University of Louisville Real Estate Foundation Inc

To acquire, maintain, improve, leverage, manage, lease, and convey real and personal property for the benefit of the university of louisville.

Philanthropy
3
Kentucky College of Art Design

The kentucky college of art and design opens the door to a creative and productive life through an undergraduate education in the contemporary arts.

Education
4
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
5
Vanderbilt University

See Disclosure Above.

Education
6
Jefferson Regional Foundation

The mission of the foundation is to improve the health and well-being of the communities served by jefferson hospital through engagement, community-driven research and grantmaking. there are three grantmaking priorities focused on the…

Health
7
Indiana University Health West Hospital Inc

Lead the transformation of healthcare through quality, innovation & education, and make Indiana one of the nation's healthiest states.

Health
8
Kentucky Center for Economic Policy Inc

To improve the quality of life for all kentuckians through research, education and advocacy on important policy issues facing the commonwealth.

Public Benefit
9
Kentucky Bankers Association

To provide effective advocacy for the financial services industry both in kentucky and on a national level; to serve as a reliable and responsive source of information and education about areas of interest to the industry; and to provide a…

—
10
Museum of Arts and Design

To collect, display and interpret objects in craft art and design.

Arts & Culture
11
Indiana University Health Foundation Inc

Indiana university health foundation leverages the power of philanthropy to support the iu health goal of making indiana one of the healthiest states in the nation.

Health
12
University Medical Center Inc

To provide care to our community and to serve as a major teaching hospital for education and training in medicine, dentistry, nursing, and allied health professions.

Health
How this is measured
The grantee most central to the portfolio’s shape is Speed Art Museum; the most unlike its peers is Kmac Museum. 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

9 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.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
0
Early backer (in before they grew)
9/9
Grantees still filing
3/9
Grew since first funded

Where the money sits, by cause and then by grantee

SPEED ART MUSEUM: $12,400 · Arts & CultureSPEED ART MUSEUMKMAC MUSEUM: $1,500 · Arts & CultureKMAC MUSEUMISAAC W BERNHEIM FOUNDATION: $11,000 · EnvironmentISAAC W BERNHEIM FOUNDATI…ISHLT FOUNDATION: $10,000 · PhilanthropyISHLT FOUNDATIONIMPACT100 LOUISVILLE INC: $1,000 · PhilanthropyIMPACT100 LOUISVILLE INCAmerican Heart Association Inc: $6,000 · HealthAmerican Hear…Purdue Research Foundation: $5,000 · EducationPurdue Resear…LOUISVILLE COLLEGIATE SCHOOL: $1,000 · EducationLOUISVILLE CO…KENTUCKY HORSE PARK FOUNDATION INC: $1,500 · Recreation & Sports
Arts & Culture$13,900Environment$11,000Philanthropy$11,000Health$6,000Education$6,000Recreation & Sports$1,500

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 budgetSPEED ART MUSEUM: $12,400 over 2y, 0.1% of budgetISAAC W BERNHEIM FOUNDATION: $11,000 over 3y, 0.1% of budgetISHLT FOUNDATION: $10,000 over 2y, 0.3% of budgetAmerican Heart Association Inc: $6,000 over 2y, 0.0% of budgetPurdue Research Foundation: $5,000 over 1y, 0.0% of budgetKENTUCKY HORSE PARK FOUNDATION INC: $1,500 over 1y, 0.1% of budgetKMAC MUSEUM: $1,500 over 1y, 0.1% of budgetLOUISVILLE COLLEGIATE SCHOOL: $1,000 over 1y, 0.0% of budgetIMPACT100 LOUISVILLE INC: $1,000 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.

Klig Charitable TrustKindred Foundation IncSociable Weaver Found…W L Lyons Brown Found…Snowy Owl Foundation …The Community Foundat…The Community Foundat…Baird Foundation IncNational Philanthropi…American Online Givin…Fidelity Investments …Donor Advised Charita…
Klig Charitable TrustKY13.6× affinity4 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Klig Charitable Trust · Kindred Foundation Inc · Sociable Weaver Foundation Inc · W L Lyons Brown Foundation · Snowy Owl Foundation Inc · The Community Foundation of Louisville Depository Inc · The Community Foundation of Louisville Inc · Baird Foundation Inc · National Philanthropic Trust · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving 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 Mark and Martha Slaughter Family Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Mark and Martha Slaughter Family Foundation Inc. 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%3%5%8%10%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    2report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–10%
    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 Mark and Martha Slaughter Family Foundation Inc?

    Find your warmest path to Mark and Martha Slaughter Family 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 9 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 Mark and Martha Slaughter Family’s filings →

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