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Florida · Private foundation

Mary Jane and Marvin Riddle Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$70k
Granted FY2025(still arriving)
14
Grants FY2025
14
Organizations funded FY2024
0%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$800
Largest grant, FY2025
$20,599
Organizations funded a year
8 to 18
FY2018 to FY2024
States reached, FY2025
5
Total assets, FY2025
$511k
Applications
Takes unsolicited applications
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 0% of the organizations Mary Jane and Marvin Riddle Foundation funded were first-time grantees, receiving 0% of its grant dollars.

New vs renewed · share of each year

In FY2024, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

50%100%’18’19’20’21’22’23’24
RenewedFirst-time

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

’18’19’20’21’22’23’24
Human ServicesPhilanthropyArts & CultureInternationalOther
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 arriving14$70k0%
FY202414$118k0%
FY202314$69k21%
FY202213$56k0%
FY202117$54k29%
FY20208$63k0%
FY201918$57k11%
FY201816$56k13%
92% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Education$519kReligion$35kPhilanthropy$9kHuman Services$7kEnvironment$5kPublic Safety & Disaster$5kArts & Culture$4kMembership Benefit$900Other$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

NY
MA
IA
PA
NJ
VA
DC
FL

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 19 grantees

What it could do for these grantees

Plus 17 recipients with no EIN on record ($53k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Mary Jane and Marvin Riddle Foundation supplied at peak.

25%50%75%100%$10M$100Mgrantee revenue →↑ funder's share of their budgetLafayette College: $163,179 over 9y, 0.0% of budgetTrustees of Deerfield Academy: $162,006 over 9y, 0.0% of budgetEmma Willard School: $154,765 over 9y, 0.1% of budgetPine Manor College: $26,429 over 3y, 0.1% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches: $4,400 over 5y, 0.0% of budgetProject of Easton Inc: $3,900 over 5y, 0.0% of budgetUnited Way of the Greater Lehigh Valley: $3,150 over 3y, 0.0% of budgetMusconetcong Watershed Association: $3,000 over 3y, 0.1% of budgetThe Conservancy of Southwest Florida: $2,050 over 8y, 0.0% of budgetMoorings Park Foundation Inc: $1,900 over 7y, 0.0% of budgetThe Children's Home of Easton Inc: $1,600 over 2y, 0.0% of budgetArtis-Naples Inc: $1,400 over 5y, 0.0% of budgetThe Shelter for Abused Women & Children Inc: $1,300 over 5y, 0.0% of budgetDelaware and Lehigh National Heritage Corridor Inc: $800 over 3y, 0.0% of budgetNorthampton County Historical and Genealogical Society: $700 over 5y, 0.0% of budgetNational Geographic Society: $472 over 5y, 0.0% of budgetMedecins Sans Frontieres USA Inc: $200 over 1y, 0.0% of budgetNaples Historical Society Inc: $150 over 3y, 0.0% of budgetAllentown Art Museum: $75 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 19.

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.

Air Products FoundationPA17.7× affinity6 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Air Products Foundation · Martin Guitar Charitable Foundation · Frederick H Bedford Jr & Margaret S Bedford Charitable Foundation · Lehigh Valley Community Foundation · United Way of the Greater Lehigh Valley · Ross J Born and Wendy G Born Charitable Trust · Ppl Foundation · American Endowment Foundation · American Online Giving Foundation Inc · The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · National Philanthropic Trust

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 Mary Jane and Marvin Riddle Foundation with peer funders

About Mary Jane and Marvin Riddle Foundation

How much does Mary Jane and Marvin Riddle Foundation give?
Mary Jane and Marvin Riddle Foundation reported 14 grants totaling $70,349 in its FY2025 IRS filing. It funded between 8 and 18 organizations a year over FY2018 to FY2024.
What does Mary Jane and Marvin Riddle Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Education (88%), Religion (6%), Philanthropy (2%).
Who are Mary Jane and Marvin Riddle Foundation's largest grantees?
By total granted over FY2017 to FY2025: Lafayette College ($163k), Trustees of Deerfield Academy ($162k), Emma Willard School ($155k).
Does Mary Jane and Marvin Riddle Foundation fund new organizations?
In FY2024, 0% of the organizations it funded were first-time grantees.
Does Mary Jane and Marvin Riddle Foundation accept unsolicited applications?
Its most recent filing reports that it accepts unsolicited grant applications.
Which funders back the same organizations as Mary Jane and Marvin Riddle Foundation?
Its strongest co-funders, measured against what their size predicts, include Air Products Foundation, Martin Guitar Charitable Foundation, Frederick H Bedford Jr & Margaret S Bedford Charitable Foundation.
Where is Mary Jane and Marvin Riddle Foundation based?
Mary Jane and Marvin Riddle 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 37 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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