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Maryland · Private foundation

Middendorf Foundation Inc

Its FY2025 filing reports that it accepted unsolicited grant applications.

$2.8M
Granted FY2025(still arriving)
2
Grants FY2025
2
Organizations funded FY2024
50%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$2,762,587
Largest grant, FY2025
$2,762,587
Organizations funded a year
1 to 50
FY2018 to FY2024
States reached, FY2025
1
Total assets, FY2025
$36M
Applications
Takes unsolicited applications
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 50% of the organizations Middendorf Foundation Inc 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; $50 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
HealthArts & CultureEducationEnvironmentHousing & ShelterHuman ServicesOther
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 arriving2$2.8M50%
FY20242$2.8M50%
FY20232$2.4M50%
FY20221$2.8M0%
FY202118$1.2M89%
FY202050$2.4M76%
FY201940$2.3M88%
FY201832$2.2M97%
94% classified

What it funded, over time

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

Education$2.6MArts & Culture$1.9MHealth$1.2MHuman Services$655kEnvironment$510kHousing & Shelter$322kFood & Nutrition$299kAnimals$283kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

ID
MA
OR
PA
CT
VA
MD
TN
LA
GA

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 102 grantees
All grantees of Middendorf Foundation Inc by total granted
GranteeTotal grantedYearsShare of their budget
Washington College$280,00030%
Chesapeake Bay Foundation Inc$250,00011%
Friends School of Baltimore Inc$200,00011%
The Union Memorial Hospital$178,00010%
Notre Dame Preparatory School$160,0002n/a
Maryland Historical Society Inc$150,00013%
University of Maryland Medical System Corporation$150,00010%
Baltimore Animal Rescue and Care Shelter Barcs$139,27021%
Arts for Learning Maryland Inc$127,31021%
Southwest Baltimore Charter School Inc$125,00022%
Center for Hope Inc$112,2561n/a
St Ambrose Housing Aid Center Inc$111,74713%
Sheppard Pratt Health System Inc$100,66310%
Wye River Upper School Inc$100,00015%
Baltimore Symphony Orchestra Inc$100,00010%
Maryland Zoological Society Inc$100,00010%
The House of Ruth Maryland Inc$100,00011%
Mercy High School$100,0002n/a
Irvine Natural Science Center Inc$100,00014%
Church of the Redeemer$96,5002n/a
Manna House Inc$90,00016%
Maryland Academy of Sciences$75,00011%
Radcliffe Creek School Inc$75,00013%
South Baltimore Learning Corporation$75,00014%
Center Stage Associates Inc$75,00011%
Baltimore Tree Trust Inc$75,0001n/a
Govans Ecumenical Development Corp$75,00013%
Kennedy Krieger Institute Inc$75,0001n/a
Tuerk House Inc$70,00011%
Meals on Wheels of Central Marylandinc$70,00011%
Sun Valley Community School Inc$70,00030%
Caroline Center Inc$65,00011%
The Loading Dock Inc$60,00014%
The William S Baer School$60,000120%
First Fruits Farm Inc$50,85212%
Mt Washington Pediatric Hospital Inc$50,60810%
Maryland Art Place Inc$50,000213%
The Baltimore Children's Museum Inc$50,00011%
Friends of Patterson Park Inc$50,00018%
Next One Up Foundation Inc$50,00014%
B&O Railroad Museum Inc$50,00011%
Society for the Preservation of Maryland Antiquities Inc$50,00017%
Mother Seton Academy Inc$50,0001n/a
Cristo Rey Jesuit High School$50,0001n/a
The Compound Inc$50,00019%
The Maryland Food Bank Inc$50,00010%
Luminis Health Anne Arundel Medical Center Inc$50,00010%
Habitat for Humanity of the Chesapeake Inc$50,00010%
Stevenson University$50,00010%
Lutheran Immigration & Refugee Service Inc Dba Global Refuge$50,00010%
Historic Hampton Incorporated$50,000134%
The Odyssey School Inc$50,00011%
Baltimore Research & Education Foundation Inc$40,50012%
Soccer Without Borders$40,00011%
The Howard County Conservancy Inc$39,00022%
Legacy Health$35,00020%
Catholic High School of Baltimore Inc$30,0001n/a
Friends of Teackle Mansion Inc$30,000120%
The Baltimore Rowing Club Inc$30,00028%
Intersection of Change Inc$30,00013%
Cylburn Arboretum Friends Inc$29,2851n/a
Casa Inc$26,70010%
Carroll Hospital Center Inc$25,00010%
Back on My Feet$25,00010%
The Community School Inc$25,000112%
Marine Corps Heritage Foundation$25,00010%
Garrison Forest School Inc$25,00010%
Baltimore Area Council #220 Boy Scouts of America$25,00011%
Compass Regional Hospice Inc$25,00010%
Gateway Maryland Inc$25,00010%
Episcopal Diocese of Louisiana$25,0001n/a
Community Resource Center$25,00012%
Hospice of the Chesapeake Inc$25,00010%
Partners in Health a Nonprofit Corporation$25,00010%
Baltimoreans United in Leadership Development Inc$25,00011%
The Seed School of Maryland$25,00010%
Planned Parenthood of Maryland Inc$21,24010%
Dyslexia Tutoring Program$21,00013%
Single Carrot Theatre Inc$20,61014%
Days End Farm Horse Rescue Inc$20,00011%
Baltimore Museum of Industry Inc$20,00020%
Blue Water Baltimore$17,00010%
Als Association Dcmdva Chapter$15,00011%
Baltimore Squashwise Inc$15,00012%
Mpt Foundation Inc$15,00010%
Jefferson Scholars Foundation$15,00010%
Pro Bono Counseling Project Inc$15,00014%
Baltimore Heritage Incorporated$15,0001n/a
Maryland House and Garden Pilgrimage Inc$15,0001n/a
Building Science Technology and Education Partnerships Inc$14,49614%
Chesapeake Chamber Music Inc T/A Chesapeake Music$12,14213%
Baltimore Museum of Art$10,00010%
Jewish Museum of Maryland Inc$10,00011%
The Boys' Latin School of Maryland Inc$10,00010%
Baltimore Concert Opera Inc$10,00012%
Adopt a Block Inc$9,0001n/a
The Samaritan Community Inc$8,70812%
Village at Home Inc$6,000111%
Parks and People Inc$1,04610%
Foundation for Baltimore County Public Library$20010%
Fund for Educational Excellence Inc$5010%
Emory University$5010%

Plus 59 recipients with no EIN on record ($15M), not named here.

Where it is load-bearing

Middendorf Foundation Inc supplied at least a quarter of the budget for 1 of its grantees at some point. The chart plots its 88 largest grantees; load-bearing ones sit top left.

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetWashington College: $280,000 over 3y, 0.2% of budgetChesapeake Bay Foundation Inc: $250,000 over 1y, 1.1% of budgetFriends School of Baltimore Inc: $200,000 over 1y, 0.7% of budgetThe Union Memorial Hospital: $178,000 over 1y, 0.0% of budgetMaryland Historical Society Inc: $150,000 over 1y, 2.8% of budgetUniversity of Maryland Medical System Corporation: $150,000 over 1y, 0.0% of budgetBaltimore Animal Rescue and Care Shelter Barcs: $139,270 over 2y, 1.5% of budgetArts for Learning Maryland Inc: $127,310 over 2y, 1.1% of budgetSouthwest Baltimore Charter School Inc: $125,000 over 2y, 2.1% of budgetSt Ambrose Housing Aid Center Inc: $111,747 over 1y, 2.9% of budgetSheppard Pratt Health System Inc: $100,663 over 1y, 0.0% of budgetWye River Upper School Inc: $100,000 over 1y, 5.1% of budgetBaltimore Symphony Orchestra Inc: $100,000 over 1y, 0.4% of budgetMaryland Zoological Society Inc: $100,000 over 1y, 0.3% of budgetThe House of Ruth Maryland Inc: $100,000 over 1y, 1.1% of budgetIrvine Natural Science Center Inc: $100,000 over 1y, 4.3% of budgetManna House Inc: $90,000 over 1y, 5.9% of budgetMaryland Academy of Sciences: $75,000 over 1y, 1.0% of budgetRadcliffe Creek School Inc: $75,000 over 1y, 2.6% of budgetSouth Baltimore Learning Corporation: $75,000 over 1y, 3.8% of budgetCenter Stage Associates Inc: $75,000 over 1y, 0.8% of budgetGovans Ecumenical Development Corp: $75,000 over 1y, 3.3% of budgetTuerk House Inc: $70,000 over 1y, 0.5% of budgetMeals on Wheels of Central Marylandinc: $70,000 over 1y, 0.7% of budgetSun Valley Community School Inc: $70,000 over 3y, 0.3% of budgetCaroline Center Inc: $65,000 over 1y, 0.9% of budgetThe Loading Dock Inc: $60,000 over 1y, 4.3% of budgetThe William S Baer School: $60,000 over 1y, 20% of budgetFirst Fruits Farm Inc: $50,852 over 1y, 2.3% of budgetMt Washington Pediatric Hospital Inc: $50,608 over 1y, 0.1% of budgetMaryland Art Place Inc: $50,000 over 2y, 13% of budgetThe Baltimore Children's Museum Inc: $50,000 over 1y, 1.2% of budgetFriends of Patterson Park Inc: $50,000 over 1y, 7.7% of budgetNext One Up Foundation Inc: $50,000 over 1y, 4.1% of budgetB&O Railroad Museum Inc: $50,000 over 1y, 1.1% of budgetSociety for the Preservation of Maryland Antiquities Inc: $50,000 over 1y, 7.0% of budgetThe Compound Inc: $50,000 over 1y, 9.2% of budgetThe Maryland Food Bank Inc: $50,000 over 1y, 0.1% of budgetLuminis Health Anne Arundel Medical Center Inc: $50,000 over 1y, 0.0% of budgetHabitat for Humanity of the Chesapeake Inc: $50,000 over 1y, 0.5% of budgetStevenson University: $50,000 over 1y, 0.0% of budgetLutheran Immigration & Refugee Service Inc Dba Global Refuge: $50,000 over 1y, 0.0% of budgetHistoric Hampton Incorporated: $50,000 over 1y, 34% of budgetThe Odyssey School Inc: $50,000 over 1y, 0.7% of budgetBaltimore Research & Education Foundation Inc: $40,500 over 1y, 1.8% of budgetSoccer Without Borders: $40,000 over 1y, 1.4% of budgetThe Howard County Conservancy Inc: $39,000 over 2y, 2.3% of budgetLegacy Health: $35,000 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 88.

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.

Baltimore Community Foundation IncMD92.7× affinity49 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Baltimore Community Foundation Inc · France-Merrick Foundation Inc · The United Way of Central Maryland Inc · T Rowe Price Program for Charitable Giving Inc · The Abell Foundation Inc · The Bunting Family Foundation · The Marion I & Henry J Knott Foundation Inc · T Rowe Price Foundation · Brown Advisory Charitable Foundation Inc · Associated Jewish Charities of Baltimore · Dr Frank C Marino Foundation Inc · The Harry and Jeanette Weinberg 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.

Compare Middendorf Foundation Inc with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to Middendorf Foundation Inc?

Find your warmest path to Middendorf Foundation Inc 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 Middendorf Foundation Inc

How much does Middendorf Foundation Inc give?
Middendorf Foundation Inc reported 2 grants totaling $2,762,787 in its FY2025 IRS filing. It funded between 1 and 50 organizations a year over FY2018 to FY2024.
What does Middendorf Foundation Inc fund?
By grant dollars over FY2017 to FY2025, its largest causes are Education (13%), Arts & Culture (9%), Health (6%).
Who are Middendorf Foundation Inc's largest grantees?
By total granted over FY2017 to FY2025: Washington College ($280k), Chesapeake Bay Foundation Inc ($250k), Friends School of Baltimore Inc ($200k).
Does Middendorf Foundation Inc fund new organizations?
In FY2024, 50% of the organizations it funded were first-time grantees.
Does Middendorf Foundation Inc accept unsolicited applications?
Its most recent filing reports that it accepts unsolicited grant applications.
Which funders back the same organizations as Middendorf Foundation Inc?
Its strongest co-funders, measured against what their size predicts, include Baltimore Community Foundation Inc, France-Merrick Foundation Inc, The United Way of Central Maryland Inc.
Where is Middendorf Foundation Inc based?
Middendorf Foundation Inc is based in MD.

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 161 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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