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The Marfan Foundation Inc at a glanceMostly funded, not a grantmaker: see who funds it →

· Public charity

The Marfan Foundation Inc

See schedule o.the marfan foundation drives research, education and support and builds community to improve outcomes, save lives and empower all people to thrive who are living with marfan, loeys-dietz, vascular ehlers-danlos syndromes, and related genetic aortic and vascular conditions.

$1.5M
Granted FY2025still arriving
6
Grants FY2025still arriving
5
States reached
$370k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
01100% classified

What it funded, over time

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

Health$5.8MScience & Tech$1.4MEducation$685kYouth Development$100k
02FY2025 · 6 grants

Where the money goes

Grants by size, and the largest recipients.

How this is measured
The 6 grants below total $1,045,000, the rows itemized in this filing. The $1,529,718 headline is the total grant expense on the return; the other $484,718 is giving the schedule does not break out (grants under the $5,000 itemization floor, grants to individuals, grants on other schedules). Every figure below describes the itemized rows only.

By grant size · FY2025

  • $10k–50k1 grant · $10k
  • $50k–250k3 grants · $300k
  • $250k+2 grants · $735k
$100,000
Median grant
5
States reached
$20M
Total assets
Largest grants
RecipientAmount
STANFORD UNIVERSITY SCHOOL OF MEDICINE$370,000
JOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE$365,000
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - LOS ANGELES$100,000
YALE UNIVERSITY$100,000
ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI$100,000
LYON FAMILY FOUNDATION$10,000
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:

Dollar for dollar, its grants (FY17–25) land where the poverty rate runs at 16%, against an area that typically sits at 11%. 86% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%BRIGHAM & WOMENS HOSPITAL: $100k → 16%MAYO CLINIC ROCHESTER: $40k → 9%UNIVERSITY OF PITTSBURGH: $100k → 11%Trustees Of The University Of Pennsylvania: $77k → 22%BOARD OF TRUSTEES OF THE LELAND STANDFORD JUNIOR UNIVERSITY: $50k → 8%THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - LOS ANGELES: $100k → 14%NEW YORK INSTITUTE OF OF TECHNOLOGY: $100k → 6%NYU GROSSMAN SCHOOL OF MEDICINE: $100k → 17%BAYLOR COLLEGE OF MEDICINE: $212k → 16%UNIVERSITY OF IOWA: $100k → 15%washington University: $102k → 21%YALE UNIVERSITY: $100k → 12%DUKE UNIVERSITY: $220k → 11%WOMEN & INFANTS HOSPITAL OF RHODE ISAND: $75k → 14%EMORY UNIVERSITY: $42k → 14%INDIANA UNIVERSITY: $75k → 18%THE ARNOLD P GOLD FOUNDATION: $101k → 7%RUTGERS UNIVERSITY NEW BRUNSWICK: $100k → 8%JOHNS HOPKINS SCHOOL OF MEDICINE: $501k → 19%TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $40k → 22%NYU School Of Medicine: $50k → 17%UNIVERSITY OF TEXAS HEALTH SCIENCE CENTER AT HOUSTON: $175k → 16%WASHINGTON UNIVERSITY OF ST LOUIS: $101k → 21%JOHNS HOPKINS SCHOOL OF MEDICINE: $403k → 19%BAYLOR COLLEGE OF MEDICINE: $132k → 16%WASHINGTON UNIVERSITY: $100k → 21%JOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE: $365k → 19%STANFORD UNIVERSITY SCHOOL OF MEDICINE: $370k → 8%WEILL MEDICAL COLLEGE OF CORNELL UNIVERSITY: $50k → 17%BAYLOR COLLEGE OF MEDICINE: $100k → 16%WASHINGTON UNIVERSITY OF ST LOUIS: $100k → 21%JOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE: $351k → 19%Massachusetts General: $50k → 16%BAYLOR COLLEGE OF MEDICINE: $84k → 16%WASHINGTON UNIVERSITY OF ST LOUIS: $100k → 21%JOHNS HOPKINS SCHOOL OF MEDICINE: $339k → 19%MASSACHUSETTS GENERAL: $50k → 16%BAYLOR COLLEGE OF MEDICINE: $61k → 16%JOHNS HOPKINS SCHOOL OF MEDICINE: $288k → 19%BAYLOR COLLEGE OF MEDICINE: $60k → 16%JOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE: $250k → 19%BAYLOR COLLEGE OF MEDICINE: $51k → 16%JOHNS HOPKINS SCHOOL OF MEDICINE: $246k → 19%HOSPTIAL FOR SPECIAL SURGERY: $100k → 17%JOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE: $201k → 19%ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $100k → 17%Icahn School Of Medicine Of Mount Sinai: $75k → 17%ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $75k → 17%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

MN
IL
WI
NY
MA
IA
IN
OH
PA
NJ
CT
RI
CA
MO
KY
MD
NC
GA
TX

Grants abroad, by region: $471k on the FY2025 return

Schedule F, as filed: 1 region. The IRS asks for region and purpose, not the recipient, so no country or grantee can be named here.

Europe (including Iceland and Greenland)$471k · 100% · 3 grants

Stated purpose: RESEARCH

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. Grants abroad on Schedule F are filed by region, purpose and amount with no recipient name, so they are shown by region and cannot be placed on the country map or matched to a grantee.
03Its grantees
repeat funding

Who it funds again

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

84%of every dollar goes to organizations it has funded before.
$6.4M · 19 repeat orgs$1.2M to everyone else

Grantees it renews have grown median revenue +61% since the first grant, against +23% for those funded once.

19 repeat relationships: 3 still active in FY2025, 16 since wound down; 2 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

19
17

Total granted

$6.4M
$1.1M

Median revenue growth · since first grant

+61%
+23%

Still filing today

68%
53%

New vs renewed · share of each year

In FY2025, 88% of grant dollars renewed an existing relationship; $110k 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
EducationHealthScience & TechOther
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

  • JOHNS HOPKINS UNIVERSITY
    9× · 2017–2025 · $2.9M · revenue +64%
  • BC
    Baylor College of Medicine
    7× · 2017–2024 · $700k · revenue +67%
  • SH
    STANFORD HEALTH CARE
    2× · 2019–2025 · $377k · revenue +70%

Funded once

  • NY
    NEW YORK UNIVERSITY SCHOOL OF MEDICINE
    one grant, 2024 · $100k
  • NY
    NEW YORK INSTITUTE OF TECHNOLOGY
    one grant, 2020 · $100k · revenue +23%
  • UO
    University of Kentucky Research Foundationgraduated
    one grant, 2021 · $100k · revenue +34%
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
University of Minnesota Physicians

University of minnesota physicians serves as the integrated group practice for the university of minnesota medical school full-time faculty to provide the highest quality healthcare to patients and their families.university of minnesota…

Health
2
University of Miami

See Form 990, Part I, Line 1, Description of Organization Mission.

Education
3
University of Southern California

The central mission of the university of southern california is the development of human beings and society as a whole through the cultivation and enrichment of the human mind and spirit. the principal means by which our mission is…

Education
4
Drexel University

Drexel university fulfills its founder's vision of preparing each new generation of students for productive professional and civic lives while also focusing its collective expertise on solving society's greatest problems. drexel is an…

Education
5
Rush University Medical Center

The mission of Rush is to improve the health of the individuals and diverse communities we serve through the integration of outstanding patient care, education, research and community partnerships.

Health
6
Thomas Jefferson University

Thomas jefferson university ("tju") is a comprehensive university with preeminence in transdisciplinary, experiential professional education, research and discovery, delivering exceptional value for the 21st century students with…

Education
7
The Johns Hopkins Hospital

For more than 125 years, the mission of the johns hopkins hospital has been to lead the world in the diagnosis and treatment of disease and to train tomorrow's great physicians, nurses and scientists. above all, we aim to provide the…

Health
8
Truman Medical Center Incorporated

University health is an academic health center providing accessible, state-of-the-art quality healthcare to our community regardless of the ability to pay.

Health
9
Southern California University of Health Sciences

The mission of southern california university of health sciences (scu) is to educate students as competent, caring and successful practitioners of integrative healthcare. the university is committed to providing excellence in academics,…

Education
10
Rhode Island Hospital

As a founding hospital in the brown university health system, rih is committed to its mission: delivering health with care.

Health
11
Cornell University

Education, research, medical services and other public services.

Education
12
Mass General Brigham Incorporated & Affiliates Group Return

Mass general brigham incorporated is developing an integrated health care delivery system throughout the region that offers patients a continuum of coordinated, high-quality care.

Health
How this is measured
The grantee most central to the portfolio’s shape is Trustees of Boston University; the most unlike its peers is Positive Exposure Productions Inc. 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

26 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. 26 of the 42 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)
1
Early backer (in before they grew)
26/26
Grantees still filing
23/26
Grew since first funded

Where the money sits, by cause and then by grantee

JOHNS HOPKINS UNIVERSITY: $2,943,593 · EducationJOHNS HOPKINS UNIVERSITYBaylor College of Medicine: $700,185 · EducationBaylor College of MedicineDUKE UNIVERSITY: $295,000 · EducationDUKE UNIVERSITYICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $275,000 · EducationWASHINGTON UNIVERSITY: $202,570 · Education+10 more: $830,404 · Education+10 moreWASHINGTON UNIVERSITY OF ST LOUIS: $300,815 · OtherWASHINGTON UNIVERSITY OF …UNIVERSITY OF TEXAS HEALTH SCIENCE CENTER HOUSTON: $200,000 · OtherUNIVERSITY OF TEXAS HEALT…THE ARNOLD GOLD FOUNDATION: $175,900 · OtherTHE ARNOLD GOLD FOUNDATIO…Weill Medical College of Cornell Univers: $158,900 · OtherWeill Medical College of …NEW YORK UNIVERSITY SCHOOL OF MEDICINE: $100,000 · OtherNEW YORK UNIVERSITY SCHOO…MASS GENERAL BRIGHAM INCORPORATED: $100,000 · OtherMASS GENERAL BRIGHAM INCO…RUTGERS THE STATE UNIVERSITY: $100,000 · OtherRUTGERS THE STATE UNIVERS…UNIVERSITY OF CALIFORNIA SAN FRANCISCO: $100,000 · OtherUNIVERSITY OF CALIFORNIA …REGENTS UNIV OF CALIFORNIA: $100,000 · OtherREGENTS UNIV OF CALIFORNI…MASS GENERAL BRIGHAM INCORPORATED: $100,000 · OtherMASS GENERAL BRIGHAM INCO…State University of Iowa: $100,000 · OtherState University of IowaUNIVERSITY OF WISCONSIN: $75,000 · OtherIndiana University School of Medicine: $75,000 · OtherTRUSTEES OF BOSTON UNIVERSITY: $75,000 · Other+4 more: $55,000 · OtherSTANFORD HEALTH CARE: $377,200 · HealthSTANFORD HEAL…MAYO CLINIC: $136,950 · HealthMAYO CLINICWOMEN & INFANTS HOSPITAL OF RI: $100,000 · HealthWOMEN & INFAN…NEW YORK SOCIETY FOR THE RELIEF OF THE RUPTURED AND CRIPPLED MAINTAINING THE: $100,000 · HealthNEW YORK SOCI…THE CLEVELAND CLINIC FOUNDATION GROUP RETURN: $100,000 · HealthTHE CLEVELAND…THE CLEVELAND CLINIC FOUNDATION: $100,000 · HealthTHE CLEVELAND…+2 more: $22,195 · HealthAMERICAN SOCIETY FOR MATRIX BIOLOGY: $5,938 · Science & Tech
Education$5,246,752Other$1,815,615Health$936,345Science & Tech$5,938

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 budgetJOHNS HOPKINS UNIVERSITY: $2,943,593 over 9y, 0.0% of budgetBaylor College of Medicine: $700,185 over 7y, 0.0% of budgetSTANFORD HEALTH CARE: $377,200 over 2y, 0.0% of budgetDUKE UNIVERSITY: $295,000 over 3y, 0.0% of budgetICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $275,000 over 4y, 0.0% of budgetWASHINGTON UNIVERSITY: $202,570 over 2y, 0.0% of budgetTHE ARNOLD GOLD FOUNDATION: $175,900 over 7y, 3.4% of budgetMAYO CLINIC: $136,950 over 8y, 0.0% of budgetTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $116,500 over 2y, 0.0% of budgetYale University: $100,000 over 1y, 0.0% of budgetUniversity of Kentucky Research Foundation: $100,000 over 1y, 0.0% of budgetWOMEN & INFANTS HOSPITAL OF RI: $100,000 over 2y, 0.0% of budgetTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $100,000 over 3y, 0.0% of budgetUNIVERSITY OF PITTSBURGH: $100,000 over 1y, 0.0% of budgetNEW YORK SOCIETY FOR THE RELIEF OF THE RUPTURED AND CRIPPLED MAINTAINING THE: $100,000 over 1y, 0.0% of budgetTHE CLEVELAND CLINIC FOUNDATION GROUP RETURN: $100,000 over 1y, 0.0% of budgetTHE CLEVELAND CLINIC FOUNDATION: $100,000 over 3y, 0.0% of budgetNew York University: $76,404 over 2y, 0.0% of budgetTRUSTEES OF BOSTON UNIVERSITY: $75,000 over 2y, 0.0% of budgetEmory University: $66,792 over 2y, 0.0% of budgetMidwestern University: $37,500 over 1y, 0.0% of budgetCASE WESTERN RESERVE UNIVERSITY: $33,208 over 2y, 0.0% of budgetBETH ISRAEL DEACONESS MEDICAL CENTER INC: $17,195 over 1y, 0.0% of budgetAMERICAN SOCIETY FOR MATRIX BIOLOGY: $5,938 over 1y, 4.9% of budgetPOSITIVE EXPOSURE PRODUCTIONS INC: $5,000 over 1y, 0.7% 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.

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 Trustees of Colum…Renaissance Charitabl…National Philanthropi…Morgan Stanley Global…Vanguard Charitable E…American Online Givin…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
The Trustees of Columbia University in the City of New YorkNY13.4× affinity4 shared granteesties to 8 of 8Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Trustees of Columbia University in the City of New York · Renaissance Charitable Foundation Inc · National Philanthropic Trust · Morgan Stanley Global Impact Funding Trust Inc · Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile 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.

How much its grantees rely on government

Each dot is one organization The Marfan Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from The Marfan Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 20%0%1%3%5%funder's share of their income ↑0%23%45%68%90%share of the org’s income from government →median 12%
  • Trustees of Boston University: 12% of income from government
  • Johns Hopkins University: 12% of income from government
  • Yale University: 12% of income from government
  • Beth Israel Deaconess Medical Center Inc: 6% of income from government
no gov moneyreceives it· size = income
2get no government money at all
3report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–90%
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.

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 42 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 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

Play a game based on Marfan’s filings →

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home