Rosenbluth Family Foundation

Private foundation · Grantmaker Mill Valley, CA EIN: 42-1564423

The Rosenbluth Family Foundation is a private foundation based in Mill Valley, California. It made 22 grants totaling $295,000 in 2025, supporting charitable organizations that include food banks, health clinics, and youth-serving organizations.

Rosenbluth Family Foundation at a glance

In short: Rosenbluth Family Foundation gave $295K across 22 grants in 2025 (avg $13K), mostly in California. 0% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.

Annual giving (2025)
$295,000
+20.0% vs 2024
Grants made (2025)
22
-8.3% vs 2024
Average grant
$13,409
+31.0% vs 2024
Median grant
$7,000
Total assets
$1,866,538
+3.3% vs 2024
New grantees (estimate)
0% first-time grantees (0 of 22, 2025; small sample)
Primary geography
California (99% of itemized 2025 grant dollars)
Latest 990 filing
Form 990-PF, 2025 View filing

Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).

How to apply to Rosenbluth Family Foundation

How to Apply

The 2025 filing lists Harry Rosenbluth as the contact and says to submit materials by mail. The foundation does not restrict giving to preselected organizations. The filing lists no application deadline and no restrictions on awards.

Contact

Application contact: Harry Rosenbluth
Mailing address: 28 Midhill Drive, Mill Valley, CA 94941
Phone: (415) 464-2890

Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.

Who Rosenbluth Family Foundation funds

How this funder distributes its grants

Top Recipients

Top 10 recipients in 2025

Marinsan Francisco Food Bank: $91KMarinsan Francisco Food Bank$91KMarin Commumity Clinics: $59KMarin Commumity Clinics$59KHair to Stay: $20KHair to Stay$20KMarin Commuinity Foundation: $13KMarin Commuinity Foundation$13KFirst Tee of San Francisco: $12KFirst Tee of San Francisco$12KAmerican Red Cross: $10KAmerican Red Cross$10KJewish Community Federation: $10KJewish Community Federation$10KMarin Humane Society: $10KMarin Humane Society$10KPlanned Parenthood: $10KPlanned Parenthood$10KCalifornia Fire Foundation: $9KCalifornia Fire Foundation$9K

The largest 2025 recipient was Marinsan Francisco Food Bank ($91K). Together the top 10 received $244K.

Grant Size Distribution

129 grants across all recorded years

127<$50K2$50–100K$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 127 grants of 129 (98%).

Geographic Focus

Where this funder awards grants

In 2025, 99% of grant dollars went to recipients in California and 1% to recipients in New Hampshire. The listed grants include organizations in Marin County and San Francisco, as well as recipients elsewhere in California.

Grant Distribution by State

4states

Share of 2025 grant dollars across all 22 itemized grants.

Cities

San FranciscoSan RafaelNovatoMill ValleyLos AngelesHanoverMilpitasSacramentoNapaSanta RosaVenturaCambridgeDanvilleRichmondKentfieldMemphisPoint Reyes Station

Is Rosenbluth Family Foundation open to new grantees?

0%

first-time grantees, 2025

In 2025, 0 of 22 grantees (0%) were first-time recipients. With only 22 grantees, that is a small sample: one grantee more or less moves the share by about 5 points. How we count

  • 100% of 2025 grantees were also funded in 2024. Method
  • Giving grew 41% from 2022 to 2025. Method
  • In 2025 it paid out 102% of its IRS minimum distribution (the 5% rule). Method

Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.

Giving History

Giving Over Time

Total grant dollars and number of grants per year

$0$100K$200K$300K30 grants2020 27 grants2021 27 grants2022 29 grants2023 24 grants2024 22 grants2025

From 2020 to 2025, annual grant giving ranged from $204K (2021) to $295K (2025). In 2025 it made 22 grants totaling $295K.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
Marinsan Francisco Food Bank Novato, CASupport of Organization's Charitable Purpose$91,000
Marin Commumity Clinics San Rafael, CASupport of Organization's Charitable Purpose$58,500
Hair to Stay San Francisco, CASupport of Organization's Charitable Purpose$20,000
Marin Commuinity Foundation Novato, CASupport of Organization's Charitable Purpose$13,000
First Tee of San Francisco San Francisco, CASupport of organization's charitable purposesupport of organization's charitable purpose$12,000
American Red Cross San Rafael, CASupport of Organization's Charitable Purpose$10,000
Jewish Community Federation San Francisco, CASupport of Organization's Charitable Purpose$10,000
Marin Humane Society Novato, CASupport of Organization's Charitable Purpose$10,000
Planned Parenthood San Rafael, CASupport of Organization's Charitable Purpose$10,000
California Fire Foundation Sacramento, CASupport of Organization's Charitable Purpose$9,000
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Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsQualifying DistributionsNet Investment IncomeDistributable Amount
2025$1,866,538$355,032$295,000$295,00022$295,000$335,032$289,159
2024$1,806,506$191,627$245,750$245,75024$245,750$185,627$254,842
2023$1,860,629$94,674$223,250$223,25029$223,250$94,674$218,419
2022$1,989,205$68,903$209,250$209,25027$209,250$68,903$225,323
2021$2,129,552$50,153$203,500$203,50027$203,500$50,153$230,952
2020$2,282,899$221,734$217,058$217,05830—$221,734$203,321

Under IRS private-foundation payout rules, Rosenbluth Family Foundation reported a distributable amount of $289K for 2025 — the minimum it must pay out in qualifying distributions.

Research compiled by Grantable AI from public sources. Last updated September 2026.

Mission & Focus Areas

No mission statement for the foundation is provided. Its 2025 grants show support for organizations working in varied areas. For example, Marin Humane Society describes its work as animal care, humane education, and advocacy; The Maven Project says it connects safety-net clinic providers with volunteer physicians to help patients access specialty care; and Huckleberry Youth Programs describes its work as supporting underserved youth and their families.

Grantmaking

In 2025, the foundation made 22 grants totaling $295,000. Grant amounts ranged from $1,000 to $91,000, with a median grant of $7,000. Its largest grants included $91,000 to Marin San Francisco Food Bank, $58,500 to Marin Community Clinics, $20,000 to Hair to Stay, and $13,000 to Marin Community Foundation. Other examples include $10,000 to Marin Humane Society and $9,000 to California Fire Foundation.

Leadership & Key People

Leadership team and compensation from IRS filings

The 2025 filing lists Harry Rosenbluth as director and president, and Karen Rosenbluth as CFO and secretary.

Rosenbluth Family Foundation is led by Harry Rosenbluth, Director & President on every filing since 2020; none of the 2 officers listed in 2025 report compensation.

Officers on the 2025 filing

  • Harry Rosenbluth

    Director & President

    On filings since 2020

    No compensation reported

  • Karen Rosenbluth

    CFO & Secretary

    On filings since 2020

    No compensation reported

Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.

Frequently asked questions about Rosenbluth Family Foundation

How much does Rosenbluth Family Foundation give each year?

Rosenbluth Family Foundation gave $295K across 22 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $246K across 24 grants.

What is Rosenbluth Family Foundation's typical grant size?

Rosenbluth Family Foundation's median grant in 2025 was $7,000, and its average grant was $13,409, across 22 grants on its 2025 IRS Form 990-PF.

Where does Rosenbluth Family Foundation give grants?

Rosenbluth Family Foundation gives mostly in California: 99% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were San Francisco, CA (8 grants), San Rafael, CA (6 grants) and Novato, CA (3 grants).

Who are Rosenbluth Family Foundation's largest grantees?

Rosenbluth Family Foundation's largest 2025 grantees include Marinsan Francisco Food Bank ($91,000), Marin Commumity Clinics ($58,500) and Hair to Stay ($20,000), according to its 2025 IRS Form 990-PF. Together they received 57% of its itemized 2025 grant dollars.

How large is Rosenbluth Family Foundation?

Rosenbluth Family Foundation reported $1.9M in total assets on its 2025 IRS Form 990-PF. It paid out $295K in qualifying distributions that year, against a required minimum of $289K (roughly 5% of its investment assets).

What does Rosenbluth Family Foundation fund?

No mission statement for the foundation is provided. Its 2025 grants show support for organizations working in varied areas. See mission & focus areas ↑

How do I apply for a grant from Rosenbluth Family Foundation?

The 2025 filing lists Harry Rosenbluth as the contact and says to submit materials by mail. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑

What is Rosenbluth Family Foundation's EIN?

Rosenbluth Family Foundation's EIN (Employer Identification Number) is 42-1564423. IRS Form 990 filing data is available on this page for 2020–2025.

Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.

Data update history

(7)

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2020 (received by the IRS November 12, 2021)
  2. Updated Form 990-PF for fiscal year 2021 (received by the IRS November 14, 2022)
  3. Updated Form 990-PF for fiscal year 2022 (received by the IRS November 14, 2023)
  4. Updated Form 990-PF for fiscal year 2023 (received by the IRS November 13, 2024)
  5. Updated Form 990-PF for fiscal year 2024 (received by the IRS October 29, 2025)
  6. Added Form 990-PF for fiscal year 2025 (received by the IRS July 1, 2026)
  7. IRS filings on file for fiscal years 2020–2024

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Similar Funders

Funders that support many of the same organizations

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Marin Community Foundation funds work in affordable housing and homelessness, community resilience and power, as well as social services, education, arts and conservation, with a focus on marginalized Marin County residents and some broader U.S. and international grantmaking. Its 2025 grants had a median of $25,000, though amounts varied widely. The profile does not state whether it accepts unsolicited requests.

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Jewish Community Federation of San Francisco the Peninsula Marin & Sonoma

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Kaiser Foundation Hospitals

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Kaiser Foundation Hospitals funds health care access and services, community health, health education, and related work, with priorities including mental and behavioral health, housing, and income and employment. Its 2024 grants had a median of $25,000, though amounts varied widely; most grant dollars went to California, with some going elsewhere. In Southern California, it says it does not accept unsolicited letters of inquiry or proposals and awards grants through competitive processes to pre-identified organizations.

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McNabb Foundation

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The McNabb Foundation’s website describes support for behavioral health and social services in East Tennessee, while its 2024 grants went to organizations with varied missions, mostly in California. Grants ranged from $500 to $5,000, with a median of $1,000. It does not accept unsolicited requests and gives only to preselected charitable organizations.

Philanthropy, Voluntarism & Grantmaking

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Hobsonlucas Family Foundation

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The foundation funds a broad range of work, including higher education, arts and film, legal advocacy, health and substance-use services, youth programs, and international development. In 2024, grants ranged from $500 to $13 million, with a median of $5,000; funding went mainly to organizations in California, New York, and New Jersey. It accepts requests by letter, with no stated deadlines or award restrictions.

Assets

$1.2B

Grants

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Total Given

$56.8M

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Cite this profile

Grantable. (2026). Rosenbluth Family Foundation funder profile. GrantGraph. Retrieved October 11, 2026, from https://grantable.co/funders/rosenbluth-family-foundation-morg_97aa3bf707ab47a994fe4b49633dc09b

BibTeX
@misc{grantable_421564423_2026,
  author       = {{Grantable}},
  title        = {{Rosenbluth Family Foundation funder profile}},
  howpublished = {GrantGraph},
  year         = {2026},
  url          = {https://grantable.co/funders/rosenbluth-family-foundation-morg_97aa3bf707ab47a994fe4b49633dc09b},
  note         = {Accessed 2026-10-11. Data licensed CC BY 4.0}
}

The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.

Figures come from Rosenbluth Family Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.

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