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Delaware · Private foundation

MacKenzie Ryan Brumberg 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.

$647k
Granted FY2025(still arriving)
8
Grants FY2025
8
Organizations funded FY2024
50%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$25,000
Largest grant, FY2025
$530,000
Organizations funded a year
1 to 9
FY2021 to FY2024
States reached, FY2025
4
Total assets, FY2025
$30M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 50% of the organizations MacKenzie Ryan Brumberg Foundation funded were first-time grantees, receiving 33% of its grant dollars.

New vs renewed · share of each year

In FY2024, 67% of grant dollars renewed an existing relationship; $35k went to new ones.

50%100%’22’23’24
RenewedFirst-time

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

’22’23’24
Arts & CulturePublic Safety & DisasterOther
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 arriving6$609k67%
FY20248$106k50%
FY20239$117k100%
FY20221$10k100%
FY20212$9kn/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2021 to 2024.

Philanthropy$191kEducation$121kArts & Culture$61kRecreation & Sports$23kReligion$22kPublic Safety & Disaster$20kPublic Benefit$15kCivil Rights$4k

Top grantees

Largest recipients by total granted, FY2021 to FY2025, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Fs Charitable Fund$530,0001n/a
Friends of United Hatzalah Inc$61,00020%
Round Hill Nursery School Inc$35,00022%
Greenwich Riding & Trails Association Inc$32,80037%
Ballet Theatre Foundation Inc$25,0001n/a
Long Island University$25,00010%
Central Fund of Israel$25,00010%
United Way of Greenwich Inc$19,47530%
Round Hill Association Inc$12,5001n/a
Yale University$10,0001n/a
Show all 20 grantees
All grantees of MacKenzie Ryan Brumberg Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Fs Charitable Fund$530,0001n/a
Friends of United Hatzalah Inc$61,00020%
Round Hill Nursery School Inc$35,00022%
Greenwich Riding & Trails Association Inc$32,80037%
Ballet Theatre Foundation Inc$25,0001n/a
Long Island University$25,00010%
Central Fund of Israel$25,00010%
United Way of Greenwich Inc$19,47530%
Round Hill Association Inc$12,5001n/a
Yale University$10,0001n/a
The Museum of Democracy Inc$10,00012%
Greenwich Volunteer Fire Department Inc$10,00017%
Yale University$10,0001n/a
Chabad Lubavitch of Greenwich Inc$10,0001n/a
Greenwich Professional Firefighters Benevolent Fund Inc$10,0001n/a
Round Hill Community Church Inc$7,0001n/a
Christ Episcopal Church$5,0001n/a
Greenwich Forward INC$5,000120%
Uja Federation of Greenwich Inc$5,00010%
The Federalist Society for Law and Public Policy Studies$3,50010%

What it could do for these grantees

Where it is load-bearing

Each grantee by its size and the share of its budget MacKenzie Ryan Brumberg Foundation supplied at peak.

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetFriends of United Hatzalah Inc: $61,000 over 2y, 0.1% of budgetRound Hill Nursery School Inc: $35,000 over 2y, 1.8% of budgetGreenwich Riding & Trails Association Inc: $32,800 over 3y, 6.5% of budgetLong Island University: $25,000 over 1y, 0.0% of budgetCentral Fund of Israel: $25,000 over 1y, 0.0% of budgetUnited Way of Greenwich Inc: $19,475 over 3y, 0.4% of budgetThe Museum of Democracy Inc: $10,000 over 1y, 1.9% of budgetGreenwich Volunteer Fire Department Inc: $10,000 over 1y, 6.6% of budgetGreenwich Forward INC: $5,000 over 1y, 20% of budgetUja Federation of Greenwich Inc: $5,000 over 1y, 0.1% of budgetThe Federalist Society for Law and Public Policy Studies: $3,500 over 1y, 0.0% 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 11.

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 Giving Bee FoundationDE15.8× affinity5 shared granteesties to 6 of 6Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Giving Bee Foundation · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · Vanguard Charitable Endowment Program · Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving Inc · 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 MacKenzie Ryan Brumberg Foundation with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to MacKenzie Ryan Brumberg Foundation?

Find your warmest path to MacKenzie Ryan Brumberg 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 MacKenzie Ryan Brumberg Foundation

How much does MacKenzie Ryan Brumberg Foundation give?
MacKenzie Ryan Brumberg Foundation reported 8 grants totaling $646,975 in its FY2025 IRS filing. It funded between 1 and 9 organizations a year over FY2021 to FY2024.
What does MacKenzie Ryan Brumberg Foundation fund?
By grant dollars over FY2021 to FY2025, its largest causes are Philanthropy (42%), Education (27%), Arts & Culture (13%).
Who are MacKenzie Ryan Brumberg Foundation's largest grantees?
By total granted over FY2021 to FY2025: Fs Charitable Fund ($530k), Friends of United Hatzalah Inc ($61k), Round Hill Nursery School Inc ($35k).
Does MacKenzie Ryan Brumberg Foundation fund new organizations?
In FY2024, 50% of the organizations it funded were first-time grantees.
Does MacKenzie Ryan Brumberg 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 MacKenzie Ryan Brumberg Foundation?
Its strongest co-funders, measured against what their size predicts, include The Giving Bee Foundation, Morgan Stanley Global Impact Funding Trust Inc, National Philanthropic Trust.
Where is MacKenzie Ryan Brumberg Foundation based?
MacKenzie Ryan Brumberg Foundation is based in DE.

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

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