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Pennsylvania · Private foundation

Mayer 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.

$30k
Granted FY2025(still arriving)
37
Grants FY2025
27
Organizations funded FY2024
48%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$250
Largest grant, FY2025
$15,000
Organizations funded a year
15 to 27
FY2022 to FY2024
States reached, FY2025
11
Total assets, FY2025
$245k
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 48% of the organizations Mayer Family Foundation funded were first-time grantees, receiving 25% of its grant dollars.

New vs renewed · share of each year

In FY2024, 75% of grant dollars renewed an existing relationship; $3k went to new ones.

50%100%’23’24
RenewedFirst-time

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

’23’24
AnimalsArts & CultureHealthOther
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 arriving37$30k46%
FY202427$13k48%
FY202315$20k27%
FY202225$20kn/a
88% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2022 to 2025.

Human Services$36kHealth$13kEnvironment$6kArts & Culture$5kEducation$4kAnimals$4kReligion$3kCrime & Legal$2kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

WA
MN
NY
MA
OH
PA
NJ
CA
VA
AZ
NC
DC
AL
GA
FL

Top grantees

Largest recipients by total granted, FY2022 to FY2025, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Anchor House Inc$35,00030%
Satanic Temple$3,3454n/a
Germantown Friends School$2,7504n/a
County Theater Inc$2,35040%
Center for Biological Diversity Inc$2,00020%
Trevor Project Inc$1,95040%
Equal Justice Initiative$1,40030%
Bucks County Free Library$1,10020%
Acme Screening Room$80030%
Wildlife Center Friends Inc$75030%
Show all 32 grantees

What it could do for these grantees

Plus 27 recipients with no EIN on record ($24k), not named here.

Where it is load-bearing

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetAnchor House Inc: $35,000 over 3y, 0.4% of budgetCounty Theater Inc: $2,350 over 4y, 0.1% of budgetCenter for Biological Diversity Inc: $2,000 over 2y, 0.0% of budgetTrevor Project Inc: $1,950 over 4y, 0.0% of budgetEqual Justice Initiative: $1,400 over 3y, 0.0% of budgetBucks County Free Library: $1,100 over 2y, 0.0% of budgetAcme Screening Room: $800 over 3y, 0.2% of budgetWildlife Center Friends Inc: $750 over 3y, 0.2% of budgetOligo Nation: $750 over 3y, 0.0% of budgetNationalities Service Center of Philadelphia: $750 over 1y, 0.0% of budgetPbs Foundation: $500 over 1y, 0.0% of budgetPrevention Point Philadelphia Inc: $500 over 1y, 0.0% of budgetNational Multiple Sclerosis Society: $450 over 2y, 0.0% of budgetThe Conservancy of Southwest Florida: $400 over 2y, 0.0% of budgetAnimal Alliance Inc: $350 over 2y, 0.0% of budgetInternational Fund for Animal Welfare Inc: $295 over 1y, 0.0% of budgetNaples Botanical Garden Inc: $290 over 1y, 0.0% of budgetPet Partners: $250 over 1y, 0.0% of budgetAmerican Near East Refugee Aid: $250 over 1y, 0.0% of budgetThe Sentencing Project: $250 over 1y, 0.0% of budgetWomen's Humane Society for the Prevention of Cruelty to Animals Inc: $250 over 1y, 0.0% of budgetThe Marshall Project Inc: $250 over 1y, 0.0% of budgetThe Global Hunger Project: $250 over 1y, 0.0% of budgetChapin School: $250 over 1y, 0.0% of budgetBooks for Africa Inc: $200 over 1y, 0.0% of budgetBucks County Society for the Prevention of Cruelty to Animals: $200 over 3y, 0.0% of budgetPhiladelphia Film Society: $200 over 2y, 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 27.

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.

The Robert Wood Johnson FoundationNJ21.4× affinity9 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Robert Wood Johnson Foundation · Chubb Charitable Foundation · Jpmorgan Chase Foundation · The Pfizer Foundation Inc · Ge Aerospace Foundation · Bristol-Myers Squibb Foundation Inc · The Bank of America Charitable Foundation Inc · Charities Aid Foundation America · The Cigna Group Foundation · Princeton Area Community Foundation Inc · Verizon Foundation · Vanguard Charitable Endowment Program

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 Mayer Family Foundation with peer funders

About Mayer Family Foundation

How much does Mayer Family Foundation give?
Mayer Family Foundation reported 37 grants totaling $30,035 in its FY2025 IRS filing. It funded between 15 and 27 organizations a year over FY2022 to FY2024.
What does Mayer Family Foundation fund?
By grant dollars over FY2022 to FY2025, its largest causes are Human Services (44%), Health (15%), Environment (7%).
Who are Mayer Family Foundation's largest grantees?
By total granted over FY2022 to FY2025: Anchor House Inc ($35k), Satanic Temple ($3k), Germantown Friends School ($3k).
Does Mayer Family Foundation fund new organizations?
In FY2024, 48% of the organizations it funded were first-time grantees.
Does Mayer 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 Mayer Family Foundation?
Its strongest co-funders, measured against what their size predicts, include The Robert Wood Johnson Foundation, Chubb Charitable Foundation, Jpmorgan Chase Foundation.
Where is Mayer Family Foundation based?
Mayer Family Foundation is based in PA.

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 59 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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