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Kilduff Family Foundation at a glance

· Private foundation

Kilduff Family 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.

$40k
Granted FY2025still arriving
15
Grants FY2025still arriving
6
States reached
$11k
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, FY2019 to 2025.

Education$100kArts & Culture$70kRecreation & Sports$23kPublic Safety & Disaster$21kHealth$16kEnvironment$9kPhilanthropy$9kReligion$2kOther$0
02FY2025 · 15 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k13 grants · $19k
  • $10k–50k2 grants · $21k
$1,000
Median grant
6
States reached
$883k
Total assets
Largest grants
RecipientAmount
EAGLES MERE AIR MUSEUM FOUNDATION$11,000
AERO CLUB OF PENNSYLVANIA MEMORIAL SCHOLARSHIP FUND$10,000
AOPA FOUNDATION$3,000
GONZAGA COLLEGE HIGH SCHOOL$3,000
ANGEL FLIGHT EAST$3,000
WISSAHICKON GARDEN CLUB$2,000
HILLSDALE COLLEGE$2,000
AMERICAN HELICOPTER MUSEUM & EDUCATION CENTER$1,000
WOODLYNDE SCHOOL$1,000
SCH ACADEMY$1,000
ALEXA FUND$500
URSINUS COLLEGE$500
WASP MUSEUM$500
CENTER SQUARE FIRE COMPANY$500
MOORE COLLEGE OF ART$500
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 (FY19–25) land where the poverty rate runs at 12%, against an area that typically sits at 9%. 56% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 9%AMERICAN HELICOPTER MUSEUM & EDUCATION CENTER: $1k → 6%AERO CLUB OF PENNSYLVANIA MEMORIAL SCHOLARSHIP FUND: $10k → 7%CORINTHIAN SAILING FOUNDATION INC: $1k → 10%EAGLES MERE AIR MUSEUM FOUNDATION: $11k → 13%SCH ACADEMY: $9k → 22%WASP MUSEUM: $1k → 18%GONZAGA COLLEGE HIGH SCHOOL: $3k → 14%HILLSDALE COLLEGE: $2k → 14%ALEXA FUND: $3k → 9%AOPA FOUNDATION: $3k → 6%AERO CLUB OF PENNSYLVANIA MEMORIAL SCHOLARSHIP FUND: $10k → 7%CORINTHIAN SAILING FOUNDATION INC: $1k → 10%EAGLES MERE AIR MUSEUM FOUNDATION: $10k → 13%SCH ACADEMY: $8k → 22%WASP MUSEUM: $1k → 18%GONZAGA COLLEGE HIGH SCHOOL: $2k → 14%HILLSDALE COLLEGE: $2k → 14%ALEXA FUND: $3k → 9%AOPA FOUNDATION: $3k → 6%WOODLYNDE SCHOOL: $1k → 6%AERO CLUB OF PENNSYLVANIA MEMORIAL SCHOLARSHIP FUND: $10k → 7%CORINTHIAN SAILING FOUNDATION INC: $1k → 10%EAGLES MERE AIR MUSEUM FOUNDATION: $10k → 13%SCH ACADEMY: $6k → 22%WASP MUSEUM: $1k → 18%GONZAGA COLLEGE HIGH SCHOOL: $2k → 14%HILLSDALE COLLEGE: $2k → 14%ALEXA FUND: $2k → 9%AOPA FOUNDATION: $3k → 6%WOODLYNDE SCHOOL: $1k → 6%AERO CLUB OF PENNSYLVANIA MEMORIAL SCHOLARSHIP FUND: $8k → 7%EAGLES MERE AIR MUSEUM FOUNDATION: $10k → 13%SPRINGSIDE CHESTNUT HILL ACADEMY: $3k → 22%GONZAGA COLLEGE HIGH SCHOOL: $2k → 14%AOPA FOUNDATION: $2k → 6%AERO CLUB OF PENNSYLVANIA MEMORIAL SCHOLARSHIP FUND: $5k → 7%EAGLES MERE AIR MUSEUM FOUNDATION: $5k → 13%AOPA FOUNDATION: $2k → 6%ANGEL FLIGHT EAST: $5k → 7%EAGLES MERE AIR MUSEUM FOUNDATION: $5k → 13%ANGEL FLIGHT EAST: $3k → 7%EAGLES MERE AIR MUSEUM FOUNDATION: $3k → 13%ANGEL FLIGHT EAST: $3k → 7%ACPAMSF: $5k → 14%ANGEL FLIGHT EAST: $3k → 7%ACPAMSF: $5k → 14%WISSAHICKON GARDEN CLUB: $2k → 7%WISSAHICKON GARDEN CLUB: $2k → 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.
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.

99%of every dollar goes to organizations it has funded before.
$238k · 20 repeat orgs$4k to everyone else

20 repeat relationships: 14 still active in FY2025, 6 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

20
2

Total granted

$238k
$4k

Median revenue growth · since first grant

+20%
+130%

Still filing today

55%
100%

New vs renewed · share of each year

In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

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

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

’19’20’21’22’23’24’25
EducationArts & CultureRecreation & SportsPublic Safety & DisasterEnvironmentPhilanthropyOther
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

  • EM
    EAGLES MERE AIR MUSEUM FOUNDATION
    7× · 2019–2025 · $54k · revenue +104% · 27% of their budget
  • AF
    ANGEL FLIGHT EAST
    7× · 2019–2025 · $16k · revenue +10%
  • TA
    THE AOPA FOUNDATION INC
    7× · 2019–2025 · $15k · revenue +90%

Funded once

  • SC
    SPRINGSIDE CHESTNUT HILL ACADEMY
    one grant, 2022 · $3k · revenue -9%
  • BA
    BUDUDA AMERICA FOUNDATIONgraduated
    one grant, 2019 · $100 · revenue +130%
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
American Airpower Museum Co Cockpit Cpt Usa Llc
—
2
Aviation Education Foundation
—
3
Flying Leatherneck Aviation Museum
—
4
The Yanks Air Museum
Arts & Culture
5
Wilt Chamberlain Memorial Fund Inc
Education
6
Dickinson College

Dickinson college provides a useful, innovative and interdisciplinary education in the liberal arts and sciences to prepare students to lead rich and fulfilling lives of engaged global citizenship

Education
7
Gmaa-Bachelor Aviation Scholarship
—
8
Albright College

As a diverse community of learners, we cultivate integrity, curiosity, connection and resilience.

Education
9
Grand Aces Foundation

Program service accomplishments provide scholarships and patriotic flyovers

Education
10
Westhampton Yacht Squadron Scholarship Fund
Education
11
Alfred & Lois Kelch Aviation Museum
Arts & Culture
12
American Fighter Aces Association

Collect and preserve historical data, artifacts, and scientific objects with regard to the country's fighter aces, its military aviation and aviators' history. educate the public about the experience in military combat and offer…

—
How this is measured
The grantee most central to the portfolio’s shape is American Helicopter Museum & Educat Center Inc; the most unlike its peers is Eagles Mere Air Museum 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

15 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. 15 of the 23 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.

2
Load-bearing (≥25% of a budget)
4
Early backer (in before they grew)
14/15
Grantees still filing
10/15
Grew since first funded

Where the money sits, by cause and then by grantee

SCH ACADEMY: $25,600 · OtherSCH ACADEMYGONZAGA COLLEGE HIGH SCHOOL: $12,000 · OtherGONZAGA COLLEGE HIGH SCHOOLACPAMSF: $10,000 · OtherACPAMSFALEXA FUND: $9,000 · OtherALEXA FUNDMOORE COLLEGE OF ART: $6,000 · OtherMOORE COLLEGE OF ARTCORINTHIAN SAILING FOUNDATION INC: $5,000 · OtherCORINTHIAN SAILING FOUNDATION INCWASP MUSEUM: $5,000 · OtherWASP MUSEUMCORINTHIAN HISTORICAL FOUNDATION: $3,000 · Other+1 more: $2,000 · OtherAERO CLUB OF PENNSYLVANIA MEMORIAL SCHOLARSHIP FUND: $43,000 · EducationAERO CLUB OF PENNSYLVANIA ME…HILLSDALE COLLEGE: $7,000 · EducationHILLSDALE COLLEGETHE WOODLYNDE SCHOOL CORPORATION: $6,500 · EducationTHE WOODLYNDE SCHOOL CORPORA…SPRINGSIDE CHESTNUT HILL ACADEMY: $3,400 · EducationSPRINGSIDE CHESTNUT HILL ACA…+1 more: $2,000 · EducationEAGLES MERE AIR MUSEUM FOUNDATION: $54,000 · Arts & CultureEAGLES MERE AIR MUSEUM FO…+1 more: $1,550 · Arts & CultureTHE AOPA FOUNDATION INC: $15,000 · Public Safety & DisasterTHE AOPA …CENTRE SQUARE FIRE COMPANY: $6,000 · Public Safety & DisasterCENTRE SQ…ANGEL FLIGHT EAST: $16,300 · Recreation & SportsPLYMOUTH LITTLE LEAGUE: $2,000 · Recreation & SportsWISSAHICKON GARDEN CLUB: $9,000 · EnvironmentJILL JUST WANTS 2 HELP: $5,500 · PhilanthropyBUDUDA AMERICA FOUNDATION: $100 · International
Other$77,600Education$61,900Arts & Culture$55,550Public Safety & Disaster$21,000Recreation & Sports$18,300Environment$9,000Philanthropy$5,500International$100

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

25%50%75%100%$10k$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetEAGLES MERE AIR MUSEUM FOUNDATION: $54,000 over 7y, 27% of budgetAERO CLUB OF PENNSYLVANIA MEMORIAL SCHOLARSHIP FUND: $43,000 over 5y, 28% of budgetANGEL FLIGHT EAST: $16,300 over 7y, 0.2% of budgetTHE AOPA FOUNDATION INC: $15,000 over 7y, 0.0% of budgetWISSAHICKON GARDEN CLUB: $9,000 over 7y, 5.2% of budgetHILLSDALE COLLEGE: $7,000 over 4y, 0.0% of budgetTHE WOODLYNDE SCHOOL CORPORATION: $6,500 over 7y, 0.0% of budgetCENTRE SQUARE FIRE COMPANY: $6,000 over 7y, 0.4% of budgetJILL JUST WANTS 2 HELP: $5,500 over 6y, 21% of budgetSPRINGSIDE CHESTNUT HILL ACADEMY: $3,400 over 1y, 0.0% of budgetCORINTHIAN HISTORICAL FOUNDATION: $3,000 over 5y, 7.1% of budgetURSINUS COLLEGE: $2,000 over 3y, 0.0% of budgetPLYMOUTH LITTLE LEAGUE: $2,000 over 2y, 0.6% of budgetAMERICAN HELICOPTER MUSEUM & EDUCAT CENTER INC: $1,550 over 2y, 0.1% of budgetBUDUDA AMERICA FOUNDATION: $100 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.

  • Who funds EAGLES MERE AIR MUSEUM FOUNDATION ↗
  • Who funds AERO CLUB OF PENNSYLVANIA MEMORIAL SCHOLARSHIP FUND ↗
  • Who funds ANGEL FLIGHT EAST ↗
  • Who funds THE AOPA FOUNDATION INC ↗
  • Who funds WISSAHICKON GARDEN CLUB ↗
  • Who funds HILLSDALE COLLEGE ↗
  • Who funds THE WOODLYNDE SCHOOL CORPORATION ↗
  • Who funds CENTRE SQUARE FIRE COMPANY ↗
  • Who funds JILL JUST WANTS 2 HELP ↗
  • Who funds SPRINGSIDE CHESTNUT HILL ACADEMY ↗
  • Who funds CORINTHIAN HISTORICAL FOUNDATION ↗
  • Who funds URSINUS COLLEGE ↗
  • Who funds PLYMOUTH LITTLE LEAGUE ↗
  • Who funds AMERICAN HELICOPTER MUSEUM & EDUCAT CENTER INC ↗
  • Who funds BUDUDA AMERICA 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 Rorer Foundation …The Pfizer Foundation…Morgan Stanley Global…National Philanthropi…The Bank of America C…Vanguard Charitable E…American Online Givin…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
The Rorer Foundation IncPA13.6× affinity4 shared granteesties to 9 of 9Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Rorer Foundation Inc · The Pfizer Foundation Inc · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile 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 Kilduff Family Foundation funds: left to right is the share of its income from government, bottom to top the share from Kilduff Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 20%2%8%17%30%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
    2get no government money at all
    5report 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 23 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 Kilduff 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