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· Private foundation

Donald & Martha Dewees Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$1.1M
Granted FY2025still arriving
24
Grants FY2025still arriving
6
States reached
$250k
Largest
01What it funds
0195% classified

What it funded, over time

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

Arts & Culture$924kAnimals$306kPhilanthropy$235kHealth$227kEducation$157kHuman Services$137kYouth Development$79kPublic Safety & Disaster$54kOther$0
02FY2025 · 24 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k3 grants · $13k
  • $10k–50k13 grants · $263k
  • $50k–250k6 grants · $340k
  • $250k+2 grants · $500k
$25,000
Median grant
6
States reached
$23M
Total assets
Largest grants
RecipientAmount
HUMANE ANIMAL PARTNERS DE$250,000
BIGGS MUSEUM$250,000
THE CHALLENGE PROGRAM$75,000
DE HISTORICAL SOCIETY$65,000
LEUKEMIA LYMPHOMA SOC$50,000
TALON REACH FOUNDATION$50,000
Individual grant recipient$50,000
FIRST COMM FOUNDATION$50,000
DELAWARE ART MUSEUM$40,000
MANS LEGACY FOUNDATION$25,000
Individual grant recipient$25,000
SAMARITANS PURSE$25,000
PLASTIC FREE DELAWARE-SUMMER SPONSOR$25,000
SERAFIN PRESENTS INC$20,000
SALESIANUM SCHOOL$20,000
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Its human-services grants (FY19–19, $1k) land where the poverty rate runs at 10%, against an area that typically sits at 12%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 12%BELLEVUE COMMUNITY CENTER: $1k → 10%BELLEVUE COMMUNITY CENTER: $100 → 10%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

MT
NY
IA
PA
NJ
VA
MD
DE
NC
DC
FL
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

83%of every dollar goes to organizations it has funded before.
$1.9M · 25 repeat orgs$395k to everyone else

Grantees it renews have grown median revenue +45% since the first grant, against 0% for those funded once.

25 repeat relationships: 10 still active in FY2025, 15 since wound down; 13 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

25
21

Total granted

$1.9M
$119k

Median revenue growth · since first grant

+45%
0%

Still filing today

48%
29%

New vs renewed · share of each year

In FY2025, 74% of grant dollars renewed an existing relationship; $276k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25
AnimalsEducationArts & CultureHealthHuman ServicesEnvironmentOther
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.

Backed again, and grew

  • DA
    DELAWARE ART MUSEUM INC
    9× · 2017–2025 · $134k · revenue +91%
  • HS
    HISTORICAL SOCIETY OF DELAWARE
    6× · 2017–2023 · $47k · revenue +53%
  • SP
    SAMARITAN'S PURSE
    2× · 2023–2025 · $35k · revenue +53%

Funded once

  • AR
    AMERICAN RED CROSS
    one grant, 2024 · $40k
  • RM
    RONALD MCDONALD HOUSE CHARITIES
    one grant, 2024 · $35k
  • CF
    COM FDN OF WESTERN NC
    one grant, 2024 · $20k
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
Delaware Museum of Nature and Science Inc

The museum is an educational corporation formed to ignite a life-long passion for exploring, discovering, and valuing nature and science.

—
2
University of Delaware

The university of delaware is a major research university dedicated to cultivating learning, advancing knowledge, and fostering the exchange of ideas through teaching, research and public service.

—
3
Delaware Society for the Prevention of Cruelty to Animals

Delaware spca is dedicated to the prevention of cruelty and the encouragement of humane treatment of all animals.

Animals
4
Friends of the Delaware Canal Inc

The friends of the delaware canal is an independent, non-profit organization working to restore, preserve, and improve the delaware canal and its surroundings.

Environment
5
Delaware Valley University

See schedule o.we are inspired by the ideals of our founder who, in 1896, emphasized respect for all people and ideas, who honored knowledge with practice, progress and the common good. our historical commitment to experiential learning…

—
6
Delaware Advancement Corporation

To aggressively promote investment in muncie-delaware county which will result in the creation and retention of quality job opportunities and enhance the quality of life in our community.

—
7
Wilmington University Inc

Wilmington university is committed to excellence in teaching, relevancy of the curriculum, and individual attention to students. as an institution with admissions policies that provide access for all, it offers opportunity for higher…

Education
8
Delaware Center for Justice

The delaware center for justice, inc. seeks to ensure an effective, efficient, and equitable system of justice in delaware through advocacy, direct services, research and public education.

Crime & Legal
9
United States Naval Institute

Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.

—
10
Delaware Agricultural Museum Association

The organization's mission is to collect, preserve, exhibit and interpret the history and technology of delaware and the delmarva peninsula's farm life/culture and to offer public education programs and services related to aspects of the…

—
11
Connecticut Humane Society

The connecticut humane society is the leading resource in the state for companion animal welfare, enriching the lives of families and communities through adoption services, medical care, education, and prevention of cruelty.

Animals
12
Delaware Prosperity Partnership Inc

To lead the state of delaware's economic development efforts.

Community Improvement
How this is measured
The grantee most central to the portfolio’s shape is Delaware Art Museum Inc; the most unlike its peers is Samaritan's Purse. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

24 grantees tracked through their own filings, 2017–2025.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 24 of the 61 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
5
Early backer (in before they grew)
23/24
Grantees still filing
11/24
Grew since first funded

Where the money sits, by cause and then by grantee

BIGGS MUSEUM: $500,000 · OtherBIGGS MUSEUMOWLS NEST FUND: $230,000 · OtherOWLS NEST FUNDLEUKEMIA LYMPHOMA SOC: $150,000 · OtherLEUKEMIA LYMPHOMA SOCDE HISTORICAL SOCIETY: $130,000 · OtherDE HISTORICAL SOCIETYTALON REACH FOUNDATION: $100,000 · OtherTALON REACH FOUNDATION+41 more: $574,035 · Other+41 moreHUMANE ANIMAL PARTNERS: $270,000 · AnimalsHUMANE ANIMA…+2 more: $300 · AnimalsDELAWARE ART MUSEUM INC: $133,500 · Arts & CultureHISTORICAL SOCIETY OF DELAWARE: $46,700 · Arts & Culture+1 more: $1,100 · Arts & CultureFIRST COMMUNITY FOUNDATION F/K/A EASTSIDE COMMUNITY LEARNING CENTER: $100,000 · Housing & ShelterCHALLENGE PROGRAM INC: $75,000 · EducationBucknell University: $4,500 · Education+2 more: $314 · EducationBLOOD CANCER UNITED INC: $41,750 · HealthSTOP SOLDIER SUICIDE INC: $2,500 · Health+1 more: $100 · HealthSAMARITAN'S PURSE: $35,000 · Religion
Other$1,684,035Animals$270,300Arts & Culture$181,300Housing & Shelter$100,000Education$79,814Health$44,350Religion$35,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetHUMANE ANIMAL PARTNERS: $270,000 over 2y, 0.5% of budgetDELAWARE ART MUSEUM INC: $133,500 over 9y, 0.6% of budgetFIRST COMMUNITY FOUNDATION F/K/A EASTSIDE COMMUNITY LEARNING CENTER: $100,000 over 2y, 1.8% of budgetCHALLENGE PROGRAM INC: $75,000 over 1y, 3.1% of budgetHISTORICAL SOCIETY OF DELAWARE: $46,700 over 6y, 0.9% of budgetBLOOD CANCER UNITED INC: $41,750 over 5y, 0.0% of budgetSAMARITAN'S PURSE: $35,000 over 2y, 0.0% of budgetKALMAR NYCKEL FOUNDATION: $34,000 over 4y, 0.7% of budgetCHRISTIANA CARE HEALTH SYSTEM INC: $31,000 over 3y, 0.5% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches: $13,500 over 2y, 0.0% of budgetBucknell University: $4,500 over 4y, 0.0% of budgetCHILDREN'S BEACH HOUSE INC: $3,100 over 2y, 0.1% of budgetEAST COAST GREENWAY ALLIANCE INC: $3,000 over 2y, 0.1% of budgetSTOP SOLDIER SUICIDE INC: $2,500 over 1y, 0.0% of budgetLEADERSHIP DELAWARE INC: $1,500 over 2y, 0.2% of budgetEDGEMOOR COMMUNITY CENTER INC: $1,100 over 1y, 0.1% of budgetSTEPHEN SILLER TUNNEL TO TOWERS FOUNDATION: $264 over 1y, 0.0% of budgetJUNIOR ACHIEVEMENT OF DELAWARE INC: $100 over 1y, 0.0% of budgetDELAWARE HUMANE ASSOCIATION: $100 over 1y, 0.0% of budgetTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $50 over 1y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

  • Who funds HUMANE ANIMAL PARTNERS ↗
  • Who funds DELAWARE ART MUSEUM INC ↗
  • Who funds FIRST COMMUNITY FOUNDATION F/K/A EASTSIDE COMMUNITY LEARNING CENTER ↗
  • Who funds CHALLENGE PROGRAM INC ↗
  • Who funds HISTORICAL SOCIETY OF DELAWARE ↗
  • Who funds BLOOD CANCER UNITED INC ↗
  • Who funds SAMARITAN'S PURSE ↗
  • Who funds KALMAR NYCKEL FOUNDATION ↗
  • Who funds CHRISTIANA CARE HEALTH SYSTEM INC ↗
  • Who funds DELAWARE NATURE SOCIETY INC ↗
  • Who funds American National Red Cross & Its Constituent Chapters and Branches ↗
  • Who funds Bucknell University ↗
  • Who funds CHILDREN'S BEACH HOUSE INC ↗
  • Who funds EAST COAST GREENWAY ALLIANCE INC ↗

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.

Delaware Community Foundation IncDE37.6× affinity16 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Delaware Community Foundation Inc · Longwood Foundation Inc · Edgar a Thronson Foundation · Crestlea Foundation Inc · Welfare Foundation Inc · Laffey-McHugh Foundation · Wsfs Cares Foundation · Jpmorgan Chase Foundation · Wakefield Family Fund Inc · Nor' Easter Foundation Inc · Marmot Foundation · Chichester Dupont Foundation Inc

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.

How much its grantees rely on government

Each dot is one organization Donald & Martha Dewees Foundation funds: left to right is the share of its income from government, bottom to top the share from Donald & Martha Dewees Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 10%0%1%3%5%funder's share of their income ↑0%19%38%56%75%share of the org’s income from government →median 14%
  • Christiana Care Health System Inc: 43% of income from government
  • Edgemoor Community Center Inc: 40% of income from government
  • Challenge Program Inc: 36% of income from government
  • Historical Society of Delaware: 18% of income from government
  • Faithful Friends Inc: 15% of income from government
  • Humane Animal Partners: 14% of income from government
  • Kalmar Nyckel Foundation: 14% of income from government
  • Delaware Nature Society Inc: 13% of income from government
  • Delaware Art Museum Inc: 8% of income from government
  • Children's Beach House Inc: 5% of income from government
  • Leadership Delaware Inc: 3% of income from government
no gov moneyreceives it· size = income
1get no government money at all
4report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–75%
typical government reliance, FY20–25
How this is measured
Government income is each org’s traced federal awards (USASpending grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that a grant caused the public funding. Coverage is precision-first, a floor rather than a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12 to 24 months.
05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to Donald & Martha Dewees Foundation?

Find your warmest path to Donald & Martha Dewees 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.

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 61 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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