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Florida · Private foundation

The Katsaros Family Foundation

Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$581k
Granted FY2024(still arriving)
40
Grants FY2024
40
Organizations funded FY2023
5%
First-time grantees FY2023
Read the full brief
Median grant, FY2024
$5,000
Largest grant, FY2024
$262,000
Organizations funded a year
34 to 40
FY2017 to FY2023
States reached, FY2024
11
Total assets, FY2024
$12M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2023, 5% of the organizations The Katsaros Family Foundation funded were first-time grantees, receiving 2% of its grant dollars.

New vs renewed · share of each year

In FY2023, 98% of grant dollars renewed an existing relationship; $11k went to new ones.

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

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

’18’19’20’21’22’23
InternationalArts & CultureEducationHousing & ShelterFood & NutritionOther
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.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2024still arriving40$581k25%
FY202340$624k5%
FY202239$675k8%
FY202137$564k8%
FY202037$535k14%
FY201935$537k14%
FY201837$487k14%
FY201734$434kn/a
89% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Religion$1.6MHealth$713kEducation$703kInternational$139kPhilanthropy$121kHousing & Shelter$99kPublic Benefit$70kArts & Culture$52kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

NH
NY
MA
PA
CA
MD
AZ
TN
SC
DC
HI
LA
GA
FL

Top grantees

Largest recipients by total granted, FY2017 to FY2024, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Worcester Polytechnic Institute$493,00060%
St Michael the Archangel Antiochian Orthodox Church Inc$228,0008n/a
Dana-Farber Cancer Institute Inc$200,00080%
The Michael J Fox Foundation for Parkinson's Research$157,00070%
St Johns Academy Private School Inc$100,00033%
Cato Institute$70,00080%
Orthodox Christian Mission Center Inc$60,0008n/a
Int'L Orthodox Christian Charities Inc$60,00080%
Archbishop Iakovos Leadership 100 Endowment Fund Incorporated$57,9757n/a
Rosie's Place Inc$50,00050%
Show all 40 grantees
All grantees of The Katsaros Family Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Worcester Polytechnic Institute$493,00060%
St Michael the Archangel Antiochian Orthodox Church Inc$228,0008n/a
Dana-Farber Cancer Institute Inc$200,00080%
The Michael J Fox Foundation for Parkinson's Research$157,00070%
St Johns Academy Private School Inc$100,00033%
Cato Institute$70,00080%
Orthodox Christian Mission Center Inc$60,0008n/a
Int'L Orthodox Christian Charities Inc$60,00080%
Archbishop Iakovos Leadership 100 Endowment Fund Incorporated$57,9757n/a
Rosie's Place Inc$50,00050%
Hellenic College Inc$43,0008n/a
St Vladimirs Orthodox Theological Seminary$43,0007n/a
Focus North America$40,00080%
Project Mexico of the Orthodox Church$40,00080%
Orthodox Christian Prison Ministry$34,5008n/a
Lasell University$32,00070%
Trustees of Boston University$25,00010%
Greek Orthodox Archdiocese of America$20,0003n/a
Martha's Vineyard Cerebral Palsy Camp Inc$20,00021%
Hellenic Initiative Inc$20,00021%
Marin Link Inc$17,00011%
Wounded Warrior Project Inc$16,00080%
Hellenic Women's Club Inc$16,00062%
Medecins Sans Frontieres USA Inc$14,00070%
The National World War II Museum Inc$10,75060%
American National Red Cross & Its Constituent Chapters and Branches$10,00050%
Ecumenical Patriarch Bartholomew Foundation Inc$10,00010%
Friends of Bass River Inc$9,00081%
Muscular Dystrophy Association Inc$8,50040%
The Children's Relief Fund$6,00061%
Harry Chapin Food Bank of Southwest Florida Inc$5,00050%
The Da Vinci Discovery Center of Science and Technology Inc$5,00010%
Orthodox Christian Laity$5,00014%
St Jude Children's Research Hospital Inc$5,00030%
The Shelter for Abused Women & Children Inc$2,00010%
American Friends of the Blind in Greece$2,00011%
St Matthews House Inc$1,00010%
Catholic Charities of the Diocese of Worcester$1,00010%
Boys and Girls Club of Allentown Inc$1,00010%
Greek Orthodox Ladies Philoptochos Society Inc$1,0001n/a

What it could do for these grantees

Plus 27 recipients with no EIN on record ($2.5M), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget The Katsaros Family Foundation supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetWorcester Polytechnic Institute: $493,000 over 6y, 0.1% of budgetDana-Farber Cancer Institute Inc: $200,000 over 8y, 0.0% of budgetThe Michael J Fox Foundation for Parkinson's Research: $157,000 over 7y, 0.0% of budgetSt Johns Academy Private School Inc: $100,000 over 3y, 2.6% of budgetCato Institute: $70,000 over 8y, 0.0% of budgetInt'L Orthodox Christian Charities Inc: $60,000 over 8y, 0.0% of budgetRosie's Place Inc: $50,000 over 5y, 0.1% of budgetFocus North America: $40,000 over 8y, 0.2% of budgetProject Mexico of the Orthodox Church: $40,000 over 8y, 0.3% of budgetLasell University: $32,000 over 7y, 0.0% of budgetTrustees of Boston University: $25,000 over 1y, 0.0% of budgetMartha's Vineyard Cerebral Palsy Camp Inc: $20,000 over 2y, 1.4% of budgetHellenic Initiative Inc: $20,000 over 2y, 0.5% of budgetMarin Link Inc: $17,000 over 1y, 1.0% of budgetWounded Warrior Project Inc: $16,000 over 8y, 0.0% of budgetHellenic Women's Club Inc: $16,000 over 6y, 2.3% of budgetMedecins Sans Frontieres USA Inc: $14,000 over 7y, 0.0% of budgetThe National World War II Museum Inc: $10,750 over 6y, 0.0% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches: $10,000 over 5y, 0.0% of budgetEcumenical Patriarch Bartholomew Foundation Inc: $10,000 over 1y, 0.3% of budgetFriends of Bass River Inc: $9,000 over 8y, 0.7% of budgetMuscular Dystrophy Association Inc: $8,500 over 4y, 0.0% of budgetThe Children's Relief Fund: $6,000 over 6y, 0.8% of budgetHarry Chapin Food Bank of Southwest Florida Inc: $5,000 over 5y, 0.0% of budgetThe Da Vinci Discovery Center of Science and Technology Inc: $5,000 over 1y, 0.1% of budgetOrthodox Christian Laity: $5,000 over 1y, 4.0% of budgetSt Jude Children's Research Hospital Inc: $5,000 over 3y, 0.0% of budgetThe Shelter for Abused Women & Children Inc: $2,000 over 1y, 0.0% of budgetAmerican Friends of the Blind in Greece: $2,000 over 1y, 0.6% of budgetSt Matthews House Inc: $1,000 over 1y, 0.0% of budgetCatholic Charities of the Diocese of Worcester: $1,000 over 1y, 0.0% of budgetBoys and Girls Club of Allentown Inc: $1,000 over 1y, 0.1% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 32.

Nonprofits that may fit its grantmaking

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.

Spell Family Foundation co William SpellMN20× affinity7 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Spell Family Foundation co William Spell · Metropoulos Family Foundation · Orthodox Vision Foundation · The James & Theodore Pedas Family Foundation Inc · Joannides Family Foundation · Helen a Carlos Foundation Inc · Cathy and George Sakellaris Family Foundation · The John C Kulis Charitable Foundation · The George and Judy Marcus Family Foundation II · The Louis and Eleni Nicozisis Family Foundation Inc · James and Virginia Kallins Foundation · The Kallinikeion 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.

Compare The Katsaros Family Foundation with peer funders

About The Katsaros Family Foundation

How much does The Katsaros Family Foundation give?
The Katsaros Family Foundation reported 40 grants totaling $580,950 in its FY2024 IRS filing. It funded between 34 and 40 organizations a year over FY2017 to FY2023.
What does The Katsaros Family Foundation fund?
By grant dollars over FY2017 to FY2024, its largest causes are Religion (37%), Health (16%), Education (16%).
Who are The Katsaros Family Foundation's largest grantees?
By total granted over FY2017 to FY2024: Worcester Polytechnic Institute ($493k), St Michael the Archangel Antiochian Orthodox Church Inc ($228k), Dana-Farber Cancer Institute Inc ($200k).
Does The Katsaros Family Foundation fund new organizations?
In FY2023, 5% of the organizations it funded were first-time grantees.
Does The Katsaros Family Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as The Katsaros Family Foundation?
Its strongest co-funders, measured against what their size predicts, include Spell Family Foundation co William Spell, Metropoulos Family Foundation, Orthodox Vision Foundation.
Where is The Katsaros Family Foundation based?
The Katsaros Family Foundation is based in FL.

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 67 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 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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