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Delaware · Private foundation

David and Masako Rosen Family Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$201k
Granted FY2025(still arriving)
37
Grants FY2025
35
Organizations funded FY2024
3%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$2,500
Largest grant, FY2025
$30,000
Organizations funded a year
34 to 37
FY2018 to FY2024
States reached, FY2025
10
Total assets, FY2025
$4.3M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 3% of the organizations David and Masako Rosen Family 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; $2k 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
Food & NutritionHuman ServicesArts & CultureOther
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 arriving35$158k3%
FY202435$139k3%
FY202334$142k3%
FY202234$162k0%
FY202134$110k6%
FY202035$138k0%
FY201935$112k3%
FY201837$112k14%
100% classified

What it funded, over time

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

Philanthropy$459kInternational$300kHousing & Shelter$294kHealth$237kHuman Services$150kReligion$53kArts & Culture$37kCivil Rights$26kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

NY
MA
OR
IA
NJ
CA
VA
MD
DC
HI
AL
GA
TX

Top grantees

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

GranteeTotal grantedYearsShare of their budget
Worthy of Love$170,000915%
Cedars-Sinai Medical Center$95,00090%
The People Concern$90,00090%
Medecins Sans Frontieres USA Inc$60,00050%
Project Ezra$59,50092%
Mercy Ships International$46,00090%
Survivor Mitzvah Project$35,00091%
American Friends of Keshet Eilon Inc$33,00096%
University Synagogue$30,0474n/a
St Barnabas Senior Center of Los Angeles$27,00090%
Show all 39 grantees
All grantees of David and Masako Rosen Family Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Worthy of Love$170,000915%
Cedars-Sinai Medical Center$95,00090%
The People Concern$90,00090%
Medecins Sans Frontieres USA Inc$60,00050%
Project Ezra$59,50092%
Mercy Ships International$46,00090%
Survivor Mitzvah Project$35,00091%
American Friends of Keshet Eilon Inc$33,00096%
University Synagogue$30,0474n/a
St Barnabas Senior Center of Los Angeles$27,00090%
Homes for Our Troops Inc$27,00090%
Smile Train Inc$27,00090%
Fisher House Foundation Inc$27,00090%
The Intrepid Fallen Heroes Fund$27,00090%
Simon Wiesenthal Center Inc$22,50090%
Clarematrix$22,50090%
Mercy Corps$21,00090%
Principles Inc Dba Impact Drug and Alcohol Treatment$18,00090%
Project Orbis International Inc$18,00090%
Make-A-Wish Foundation of Greater Los Angeles$18,00090%
A Place Called Home$18,00090%
Covenant House California$18,00090%
The Michael J Fox Foundation for Parkinson's Research$18,00090%
The Eli Home Inc$16,00080%
Wilshire Boulevard Temple$15,0005n/a
Los Angeles Regional Food Bank$11,50080%
Union Rescue Mission$9,00090%
Center for Mathematics and Teaching Inc$9,00097%
Cri-Help Inc$9,00090%
Meals on Wheels of West Los Angeles Inc$8,00080%
Cooperative for Assistance and Relief Everywhere Inc$8,00040%
World Jewish Congress (American Section) Inc$7,70090%
The Buckley School$7,50010%
Surfaid International USA$7,00060%
Maui Food Bank Inc$4,50030%
The United States Holocaust Memorial Museum$4,00080%
Southern Poverty Law Center Inc$3,00020%
Scholarship Foundation of Santa Barbara$2,00040%
National Children's Alliance Inc$2,00010%

What it could do for these grantees

Plus 4 recipients with no EIN on record ($123k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget David and Masako Rosen Family Foundation supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetWorthy of Love: $170,000 over 9y, 15% of budgetCedars-Sinai Medical Center: $95,000 over 9y, 0.0% of budgetThe People Concern: $90,000 over 9y, 0.1% of budgetMedecins Sans Frontieres USA Inc: $60,000 over 5y, 0.0% of budgetProject Ezra: $59,500 over 9y, 2.3% of budgetMercy Ships International: $46,000 over 9y, 0.0% of budgetSurvivor Mitzvah Project: $35,000 over 9y, 0.7% of budgetAmerican Friends of Keshet Eilon Inc: $33,000 over 9y, 5.6% of budgetSt Barnabas Senior Center of Los Angeles: $27,000 over 9y, 0.1% of budgetHomes for Our Troops Inc: $27,000 over 9y, 0.0% of budgetSmile Train Inc: $27,000 over 9y, 0.0% of budgetFisher House Foundation Inc: $27,000 over 9y, 0.0% of budgetThe Intrepid Fallen Heroes Fund: $27,000 over 9y, 0.1% of budgetSimon Wiesenthal Center Inc: $22,500 over 9y, 0.0% of budgetClarematrix: $22,500 over 9y, 0.0% of budgetMercy Corps: $21,000 over 9y, 0.0% of budgetPrinciples Inc Dba Impact Drug and Alcohol Treatment: $18,000 over 9y, 0.0% of budgetProject Orbis International Inc: $18,000 over 9y, 0.0% of budgetMake-A-Wish Foundation of Greater Los Angeles: $18,000 over 9y, 0.1% of budgetA Place Called Home: $18,000 over 9y, 0.0% of budgetCovenant House California: $18,000 over 9y, 0.0% of budgetThe Michael J Fox Foundation for Parkinson's Research: $18,000 over 9y, 0.0% of budgetThe Eli Home Inc: $16,000 over 8y, 0.3% of budgetLos Angeles Regional Food Bank: $11,500 over 8y, 0.0% of budgetUnion Rescue Mission: $9,000 over 9y, 0.0% of budgetCenter for Mathematics and Teaching Inc: $9,000 over 9y, 7.3% of budgetCri-Help Inc: $9,000 over 9y, 0.0% of budgetMeals on Wheels of West Los Angeles Inc: $8,000 over 8y, 0.4% of budgetCooperative for Assistance and Relief Everywhere Inc: $8,000 over 4y, 0.0% of budgetWorld Jewish Congress (American Section) Inc: $7,700 over 9y, 0.0% of budgetThe Buckley School: $7,500 over 1y, 0.0% of budgetSurfaid International USA: $7,000 over 6y, 0.4% of budgetMaui Food Bank Inc: $4,500 over 3y, 0.0% of budgetThe United States Holocaust Memorial Museum: $4,000 over 8y, 0.0% of budgetSouthern Poverty Law Center Inc: $3,000 over 2y, 0.0% of budgetScholarship Foundation of Santa Barbara: $2,000 over 4y, 0.0% of budgetNational Children's Alliance Inc: $2,000 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 37.

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.

California Community FoundationCA17.1× affinity7 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: California Community Foundation · The Annenberg Foundation · Sempra Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Charities Aid Foundation America · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · The Blackbaud Giving Fund · Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · Donor Advised Charitable Giving 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 David and Masako Rosen Family Foundation with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to David and Masako Rosen Family Foundation?

Find your warmest path to David and Masako Rosen Family 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.

About David and Masako Rosen Family Foundation

How much does David and Masako Rosen Family Foundation give?
David and Masako Rosen Family Foundation reported 37 grants totaling $200,500 in its FY2025 IRS filing. It funded between 34 and 37 organizations a year over FY2018 to FY2024.
What does David and Masako Rosen Family Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Philanthropy (28%), International (18%), Housing & Shelter (18%).
Who are David and Masako Rosen Family Foundation's largest grantees?
By total granted over FY2017 to FY2025: Worthy of Love ($170k), Cedars-Sinai Medical Center ($95k), The People Concern ($90k).
Does David and Masako Rosen Family Foundation fund new organizations?
In FY2024, 3% of the organizations it funded were first-time grantees.
Does David and Masako Rosen Family Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as David and Masako Rosen Family Foundation?
Its strongest co-funders, measured against what their size predicts, include California Community Foundation, The Annenberg Foundation, Sempra Foundation.
Where is David and Masako Rosen Family Foundation based?
David and Masako Rosen Family Foundation is based in DE.

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 46 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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