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New York · Private foundation

Mark 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.

$2.0M
Granted FY2025(still arriving)
25
Grants FY2025
20
Organizations funded FY2024
20%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$8,300
Largest grant, FY2025
$750,000
Organizations funded a year
15 to 23
FY2019 to FY2024
States reached, FY2025
3
Total assets, FY2025
$28M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 20% of the organizations Mark Family Foundation funded were first-time grantees, receiving 2% of its grant dollars.

New vs renewed · share of each year

In FY2024, 98% of grant dollars renewed an existing relationship; $43k went to new ones.

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

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

’20’21’22’23’24
HealthArts & CulturePhilanthropyEducationInternationalHuman 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.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving23$1.7M30%
FY202420$2.0M20%
FY202318$2.2M44%
FY202215$1.7M27%
FY202117$3.0M41%
FY202019$988k42%
FY201923$953kn/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2025.

Health$7.6MArts & Culture$2.2MEducation$1.4MPhilanthropy$969kReligion$856kHuman Services$427kScience & Tech$175kCommunity Improvement$50kOther$0

Top grantees

Largest recipients by total granted, FY2019 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 54 grantees
All grantees of Mark Family Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Nyu Langone Health System$4,025,00048%
Lincoln Center for the Performing Arts Inc$1,437,50050%
Park Avenue Synagogue Inc$824,0106n/a
United Jewish Appeal-Federation of Jewish Philanthropies of New York Inc$816,00060%
Horace Mann School$510,00070%
Morselife Foundation Inc$421,00052%
American Friends of the Israel Museum$302,30071%
Guild Hall of East Hampton Inc$190,00061%
The Southampton Hospital Foundation Inc$115,00040%
Icahn School of Medicine at Mount Sinai$112,00040%
Memorial Sloan-Kettering Cancer Center$75,00020%
East Hampton Education Foundation Inc$50,000123%
The Society of the Four Arts Inc$50,00020%
The Jewish Museum$50,00050%
Atlantic Golf Club Educational Fund Inc$45,00028%
Northwell Health Foundation$30,25020%
Central Synagogue$30,1804n/a
Robin Hood Foundation$30,00020%
The Philharmonic Symphony Society of Ny Inc$20,00010%
Bruce and Marsha Moskowitz Foundation Inc$20,00023%
Norton Museum of Art Inc$18,00010%
New York-Presbyterian Fund Inc$12,00050%
American Jewish Committee$10,10020%
The Hospital for Special Surgery Fund Inc$10,00010%
Birthright Israel Foundation$10,00010%
Jazz at Lincoln Center Inc$10,00010%
Friends of Georgica Pond Foundation Inc$10,00012%
American Friends of Israel Philharmonic Orchestra$10,0001n/a
Alzheimer's Drug Discovery Foundation$6,50010%
Selfhelp Community Services Inc$6,10020%
Manhattan Theatre Club Inc$6,00010%
The Young Men's and Young Women's Hebrew Association$5,50020%
The Foundation for Education in Honduras$5,0001n/a
Seriousfun Children's Network$5,00010%
Mount Sinai Health System Inc$5,0001n/a
New York Junior Tennis League Inc$5,00010%
The Vivian Beaumont Theaterinc D/B/A Lincoln Center Theater$5,00010%
Dana-Farber Cancer Institute Inc$5,00010%
Town of Palm Beach United Way Inc$5,00020%
The Atlantic Golf Club Foundation$5,00011%
Child Mind Institute Inc$3,50020%
Samuel Waxman Cancer Research Foundation$3,00010%
Montefiore Medical Center$2,5001n/a
Palm Beach Country Club Foundation Inc$2,50010%
Public Art Fund Inc$2,0001n/a
Jewish Center of the Hamptons$1,8001n/a
The New York Public Library Astor Lenox and Tilden Foundations$1,50010%
Citizens Committee for Children of New York Inc$1,25030%
Friends of the Israel Defense Forces$50010%
The Medstar-Georgetown Medical Center Inc$50010%
Museum of Jewish Heritage a Living Memorial to the Holocaust$50010%
The Rockefeller University$50010%
The Palm Beach Police and Fire Foundation Inc$25010%
Southampton Village Police Benevolent Association Inc$12510%

What it could do for these grantees

Plus 7 recipients with no EIN on record ($3.2M), not named here.

Where it is load-bearing

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetNyu Langone Health System: $4,025,000 over 4y, 8.3% of budgetLincoln Center for the Performing Arts Inc: $1,437,500 over 5y, 0.2% of budgetUnited Jewish Appeal-Federation of Jewish Philanthropies of New York Inc: $816,000 over 6y, 0.1% of budgetHorace Mann School: $510,000 over 7y, 0.1% of budgetMorselife Foundation Inc: $421,000 over 5y, 1.5% of budgetAmerican Friends of the Israel Museum: $302,300 over 7y, 0.8% of budgetGuild Hall of East Hampton Inc: $190,000 over 6y, 0.6% of budgetThe Southampton Hospital Foundation Inc: $115,000 over 4y, 0.4% of budgetIcahn School of Medicine at Mount Sinai: $112,000 over 4y, 0.0% of budgetMemorial Sloan-Kettering Cancer Center: $75,000 over 2y, 0.0% of budgetEast Hampton Education Foundation Inc: $50,000 over 1y, 23% of budgetThe Society of the Four Arts Inc: $50,000 over 2y, 0.1% of budgetThe Jewish Museum: $50,000 over 5y, 0.1% of budgetAtlantic Golf Club Educational Fund Inc: $45,000 over 2y, 7.7% of budgetNorthwell Health Foundation: $30,250 over 2y, 0.0% of budgetRobin Hood Foundation: $30,000 over 2y, 0.0% of budgetThe Philharmonic Symphony Society of Ny Inc: $20,000 over 1y, 0.0% of budgetBruce and Marsha Moskowitz Foundation Inc: $20,000 over 2y, 3.2% of budgetNorton Museum of Art Inc: $18,000 over 1y, 0.1% of budgetNew York-Presbyterian Fund Inc: $12,000 over 5y, 0.0% of budgetAmerican Jewish Committee: $10,100 over 2y, 0.0% of budgetThe Hospital for Special Surgery Fund Inc: $10,000 over 1y, 0.0% of budgetBirthright Israel Foundation: $10,000 over 1y, 0.0% of budgetJazz at Lincoln Center Inc: $10,000 over 1y, 0.0% of budgetFriends of Georgica Pond Foundation Inc: $10,000 over 1y, 1.7% of budgetAlzheimer's Drug Discovery Foundation: $6,500 over 1y, 0.0% of budgetSelfhelp Community Services Inc: $6,100 over 2y, 0.0% of budgetManhattan Theatre Club Inc: $6,000 over 1y, 0.0% of budgetThe Young Men's and Young Women's Hebrew Association: $5,500 over 2y, 0.0% of budgetSeriousfun Children's Network: $5,000 over 1y, 0.0% of budgetNew York Junior Tennis League Inc: $5,000 over 1y, 0.0% of budgetThe Vivian Beaumont Theaterinc D/B/A Lincoln Center Theater: $5,000 over 1y, 0.0% of budgetDana-Farber Cancer Institute Inc: $5,000 over 1y, 0.0% of budgetTown of Palm Beach United Way Inc: $5,000 over 2y, 0.1% of budgetThe Atlantic Golf Club Foundation: $5,000 over 1y, 1.1% of budgetChild Mind Institute Inc: $3,500 over 2y, 0.0% of budgetSamuel Waxman Cancer Research Foundation: $3,000 over 1y, 0.1% of budgetPalm Beach Country Club Foundation Inc: $2,500 over 1y, 0.4% of budgetThe New York Public Library Astor Lenox and Tilden Foundations: $1,500 over 1y, 0.0% of budgetCitizens Committee for Children of New York Inc: $1,250 over 3y, 0.0% of budgetFriends of the Israel Defense Forces: $500 over 1y, 0.0% of budgetThe Medstar-Georgetown Medical Center Inc: $500 over 1y, 0.0% of budgetMuseum of Jewish Heritage a Living Memorial to the Holocaust: $500 over 1y, 0.0% of budgetThe Rockefeller University: $500 over 1y, 0.0% of budgetThe Palm Beach Police and Fire Foundation Inc: $250 over 1y, 0.0% of budgetSouthampton Village Police Benevolent Association Inc: $125 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 46.

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.

Jewish Communal FundNY15.2× affinity6 shared granteesties to 6 of 6Hover any node to trace its alignments.Compare side by side →

Open a dossier: Jewish Communal Fund · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · National Philanthropic Trust · 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.

Compare Mark Family Foundation with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to Mark Family Foundation?

Find your warmest path to Mark Family 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.

About Mark Family Foundation

How much does Mark Family Foundation give?
Mark Family Foundation reported 25 grants totaling $2,044,500 in its FY2025 IRS filing. It funded between 15 and 23 organizations a year over FY2019 to FY2024.
What does Mark Family Foundation fund?
By grant dollars over FY2019 to FY2025, its largest causes are Health (55%), Arts & Culture (16%), Education (10%).
Who are Mark Family Foundation's largest grantees?
By total granted over FY2019 to FY2025: Nyu Langone Health System ($4.0M), Lincoln Center for the Performing Arts Inc ($1.4M), Park Avenue Synagogue Inc ($824k).
Does Mark Family Foundation fund new organizations?
In FY2024, 20% of the organizations it funded were first-time grantees.
Does Mark 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 Mark Family Foundation?
Its strongest co-funders, measured against what their size predicts, include Jewish Communal Fund, Gs Donor Advised Philanthropy Fund for Wealth Management Inc, National Philanthropic Trust.
Where is Mark Family Foundation based?
Mark Family Foundation is based in NY.

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 64 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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