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Pennsylvania · Private foundation

George & Miriam Martin Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$667k
Granted FY2025(still arriving)
29
Grants FY2025
29
Organizations funded FY2024
21%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$4,000
Largest grant, FY2025
$500,000
Organizations funded a year
29 to 39
FY2018 to FY2024
States reached, FY2025
12
Total assets, FY2025
$4.3M
Applications
Takes unsolicited applications
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 21% of the organizations George & Miriam Martin Foundation funded were first-time grantees, receiving 1% of its grant dollars.

New vs renewed · share of each year

In FY2024, 99% of grant dollars renewed an existing relationship; $14k 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
EnvironmentCommunity ImprovementSocial SciencePublic BenefitCrime & LegalAnimalsOther
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 arriving29$667k7%
FY202429$2.3M21%
FY202332$2.2M0%
FY202239$2.2M0%
FY202139$2.3M8%
FY202033$2.1M6%
FY201935$1.7M17%
FY201833$1.4M21%
92% classified

What it funded, over time

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

Environment$16MPublic Benefit$140kCrime & Legal$62kAnimals$61kCommunity Improvement$9kRecreation & Sports$8kArts & Culture$1kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

ME
WA
NY
MA
OR
PA
NJ
CA
UT
CO
VA
MD
NM
NC
DC
TX
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 39 grantees
All grantees of George & Miriam Martin Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Earthjustice$13,954,89492%
Natural Lands Trust Inc$645,00081%
Mahoosuc Land Trust Inc$268,000610%
International Rivers Network$210,00092%
Citizens for Pennsylvania's Future$140,00091%
The Center for Investigative Reporting formrly Foundation for National Progress$140,00070%
Pennenvironment Inc$65,00081%
Public Justice Foundation$62,00070%
Advanced Energy Institute$50,00050%
Keystone Energy Efficiency Alliance$50,000512%
Ding Darling Wildlife Society Inc$48,00090%
Woodstock Land Conservancy Inc$45,82495%
Royal River Conservation Trust$45,00072%
Wildearth Guardians$39,00090%
Clean Air Council$39,00080%
American Whitewater$32,00041%
Pennsylvania Environmental Defense Foundation$23,000512%
Community Environmental Legal Defense Fund$19,00082%
Trout Unlimited Inc$16,00070%
Earth Law Center$14,00051%
Downeast Salmon Federation$13,00070%
Natural Resources Council of Maine Inc$12,00070%
Public Employees for Environmental Responsibility Inc$12,00080%
Pennenvironment Research & Policy Center Inc$10,00011%
El Porvenir$10,00060%
Maine Rivers$8,00022%
Rails to Trails Conservancy$7,00020%
Chester Ridley Crum Watersheds Association$7,00061%
Ironbound Community Corporation$6,00020%
Reclam the Bay$6,00063%
American Rivers Inc$6,00060%
Friends of Cedar Mesa$6,00060%
Weconservepa$5,00011%
Green Amendments for the Generations$5,0001n/a
Forest Service Employees for Environmental Ethics Inc$3,00030%
Inside Climate News Inc$3,00020%
HASER Inc$3,00010%
Mystic River Watershed Association Inc$1,00010%
Pennypack Ecological Restoration Trust$1,00010%

What it could do for these grantees

Plus 18 recipients with no EIN on record ($853k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget George & Miriam Martin Foundation supplied at peak.

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetEarthjustice: $13,954,894 over 9y, 1.7% of budgetNatural Lands Trust Inc: $645,000 over 8y, 1.3% of budgetMahoosuc Land Trust Inc: $268,000 over 6y, 10% of budgetInternational Rivers Network: $210,000 over 9y, 2.2% of budgetCitizens for Pennsylvania's Future: $140,000 over 9y, 0.9% of budgetThe Center for Investigative Reporting formrly Foundation for National Progress: $140,000 over 7y, 0.1% of budgetPennenvironment Inc: $65,000 over 8y, 0.8% of budgetPublic Justice Foundation: $62,000 over 7y, 0.2% of budgetAdvanced Energy Institute: $50,000 over 5y, 0.2% of budgetKeystone Energy Efficiency Alliance: $50,000 over 5y, 12% of budgetDing Darling Wildlife Society Inc: $48,000 over 9y, 0.2% of budgetWoodstock Land Conservancy Inc: $45,824 over 9y, 4.8% of budgetRoyal River Conservation Trust: $45,000 over 7y, 1.7% of budgetWildearth Guardians: $39,000 over 9y, 0.1% of budgetClean Air Council: $39,000 over 8y, 0.2% of budgetAmerican Whitewater: $32,000 over 4y, 0.8% of budgetPennsylvania Environmental Defense Foundation: $23,000 over 5y, 12% of budgetCommunity Environmental Legal Defense Fund: $19,000 over 8y, 2.3% of budgetTrout Unlimited Inc: $16,000 over 7y, 0.0% of budgetEarth Law Center: $14,000 over 5y, 0.7% of budgetDowneast Salmon Federation: $13,000 over 7y, 0.2% of budgetNatural Resources Council of Maine Inc: $12,000 over 7y, 0.1% of budgetPublic Employees for Environmental Responsibility Inc: $12,000 over 8y, 0.2% of budgetPennenvironment Research & Policy Center Inc: $10,000 over 1y, 0.7% of budgetEl Porvenir: $10,000 over 6y, 0.1% of budgetMaine Rivers: $8,000 over 2y, 2.1% of budgetRails to Trails Conservancy: $7,000 over 2y, 0.0% of budgetChester Ridley Crum Watersheds Association: $7,000 over 6y, 1.1% of budgetIronbound Community Corporation: $6,000 over 2y, 0.1% of budgetReclam the Bay: $6,000 over 6y, 3.1% of budgetAmerican Rivers Inc: $6,000 over 6y, 0.0% of budgetFriends of Cedar Mesa: $6,000 over 6y, 0.1% of budgetWeconservepa: $5,000 over 1y, 0.6% of budgetForest Service Employees for Environmental Ethics Inc: $3,000 over 3y, 0.2% of budgetInside Climate News Inc: $3,000 over 2y, 0.0% of budgetHASER Inc: $3,000 over 1y, 0.1% of budgetMystic River Watershed Association Inc: $1,000 over 1y, 0.0% of budgetPennypack Ecological Restoration Trust: $1,000 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 38.

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.

PatagoniaorgCA23.9× affinity10 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Patagoniaorg · Maine Community Foundation Inc · Resources Legacy Fund · Clif Family Foundation · The Partnership Project Inc · National Fish and Wildlife Foundation · The Winky Foundation Co Wilmington Trust Co · Environmental Defense Fund Incorporated · New Venture Fund · The Schmidt Family Foundation · United States Energy Foundation · The William Penn 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 George & Miriam Martin Foundation with peer funders

About George & Miriam Martin Foundation

How much does George & Miriam Martin Foundation give?
George & Miriam Martin Foundation reported 29 grants totaling $667,000 in its FY2025 IRS filing. It funded between 29 and 39 organizations a year over FY2018 to FY2024.
What does George & Miriam Martin Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Environment (96%), Public Benefit (1%), Crime & Legal (0%).
Who are George & Miriam Martin Foundation's largest grantees?
By total granted over FY2017 to FY2025: Earthjustice ($14M), Natural Lands Trust Inc ($645k), Mahoosuc Land Trust Inc ($268k).
Does George & Miriam Martin Foundation fund new organizations?
In FY2024, 21% of the organizations it funded were first-time grantees.
Does George & Miriam Martin Foundation accept unsolicited applications?
Its most recent filing reports that it accepts unsolicited grant applications.
Which funders back the same organizations as George & Miriam Martin Foundation?
Its strongest co-funders, measured against what their size predicts, include Patagoniaorg, Maine Community Foundation Inc, Resources Legacy Fund.
Where is George & Miriam Martin Foundation based?
George & Miriam Martin 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 57 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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