Marcia & Philip Rothblum Foundation

Private foundation · Grantmaker New York, NY EIN: 11-2125721

The Marcia & Philip Rothblum Foundation is a private foundation based in New York, New York. Its filing states that it makes contributions to preselected charitable organizations.

Marcia & Philip Rothblum Foundation at a glance

Total assets
$9,796,269
+4.5% vs 2024
Revenue (2025)
$488,804
-4.2% vs 2024
Qualifying distributions (2025)
$3,250
-93.9% vs 2024
Expenses (2025)
$68,419
-41.8% vs 2024
Latest 990 filing
Form 990-PF, 2025 View filing

Data from IRS Form 990-PF, 2025; updated October 2026.

How to apply to Marcia & Philip Rothblum Foundation

Accepts unsolicited proposals
No
How to Apply

The foundation does not accept unsolicited requests for funds.

Contact

Mailing address: 155 W 68Th St 22Cd Co J Weidena, New York, NY 10023
Phone: (212) 302-6300

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

Who Marcia & Philip Rothblum Foundation funds

How this funder distributes its grants

Grant Size Distribution

137 grants across all recorded years

135<$50K1$50–100K1$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 135 grants of 137 (99%).

Geographic Focus

Where this funder awards grants

Grant Distribution by State

14states
+6 more states

Cities

New YorkWashingtonSan FranciscoAspenBaltimoreBethlehemBronxConcordMontgomeryPortlandDenverNew Hyde ParkAustinBaysideHempsteadLanhamRiverdaleRochesterAtlantaCambridge

How Marcia & Philip Rothblum Foundation gives

  • Giving fell 80% from 2021 to 2024. Method
  • In 2025 it paid out 1% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method

From the foundation's IRS Form 990-PF filings. Methodology.

Giving History

Giving Over Time

Total grant dollars and number of grants per year

$0$100K$200K$300K$400K46 grants2019 48 grants2020 51 grants2021 51 grants2022 34 grants2023 1 grant2024 0 grants2025

From 2019 to 2024, annual grant giving ranged from $50K (2024) to $318K (2022). In 2024 it made 1 grant totaling $50K.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
UJA-Federation of NY New York, NYGeneral Support$50,000
Your AI grants department

Ready to take the next step with Marcia & Philip Rothblum Foundation?

Fully replaces Grant database subscriptions Instrumentl · Foundation Directory · GrantStation & similar

Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsQualifying DistributionsNet Investment IncomeDistributable Amount
2025$9,796,269$488,804$68,419——$3,250$431,164$537,081
2024$9,375,884$510,299$117,511$50,0001$53,250$455,297$508,666
2023$8,992,778$421,424$271,901$217,00034$219,670$366,698$481,677
2022$8,862,609$8,468,994$331,671$318,00051$318,420$40,449$83,839
2021$725,286$255,238$259,201$248,50051$248,500$99,287$59,520
2020$729,288$192,217$227,447$218,25048—$33,270$47,750
2019$764,978$81,162$263,028$245,25046—$67,207$57,914

Under IRS private-foundation payout rules, Marcia & Philip Rothblum Foundation reported a distributable amount of $537K for 2025 — the minimum it must pay out in qualifying distributions.

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

Grantmaking

The foundation reported 34 grants totaling $217,000 in 2023 and one grant totaling $50,000 in 2024. Its 2025 filing lists a grant count of zero. The available information does not establish a typical grant size or identify grantees.

Leadership & Key People

Leadership team and compensation from IRS filings

The foundation’s 2025 filing lists Joyce R Weidenaar as president/secretary, Lisa Rothblum as treasurer, and Nina I Dreyfus and Ashley D Dreyfus as assistant secretaries.

Marcia & Philip Rothblum Foundation is led by Joyce R. Weidenaar, President & Secretary since 2021 (on filings since 2019); none of the 4 officers listed in 2025 report compensation.

Officers on the 2025 filing

  • Joyce R. Weidenaar

    President & Secretary

    Secretary → President & Secretary, 2021

    On filings since 2019

    1 hr/week

    No compensation reported

  • Ashley D. Dreyfus

    Assistant Secretary

    On filings since 2019

    1 hr/week

    No compensation reported

  • Lisa Rothblum

    Treasurer

    On filings since 2019

    1 hr/week

    No compensation reported

  • Nina I. Dreyfus

    Assistant Secretary

    On filings since 2019

    1 hr/week

    No compensation reported

Former officers (1)
  • Former: Philip Rothblum (2019–2020) — President

Data from IRS Form 990 filings, 2019–2025. "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 Marcia & Philip Rothblum Foundation

How large is Marcia & Philip Rothblum Foundation?

Marcia & Philip Rothblum Foundation reported $9.8M in total assets on its 2025 IRS Form 990-PF. It paid out $3K in qualifying distributions that year, against a required minimum of $537K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.

How do I apply for a grant from Marcia & Philip Rothblum Foundation?

The foundation does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑

What is Marcia & Philip Rothblum Foundation's EIN?

Marcia & Philip Rothblum Foundation's EIN (Employer Identification Number) is 11-2125721. IRS Form 990 filing data is available on this page for 2019–2025.

Does Marcia & Philip Rothblum Foundation accept unsolicited proposals?

No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑

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

Data update history

(7)

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2024 (received by the IRS May 13, 2025)
  2. Updated Form 990-PF for fiscal year 2025 (received by the IRS April 30, 2026)
  3. Added Form 990-PF for fiscal year 2019 (received by the IRS June 15, 2020)
  4. Updated Form 990-PF for fiscal year 2020 (received by the IRS May 13, 2021)
  5. Updated Form 990-PF for fiscal year 2021 (received by the IRS May 17, 2022)
  6. Updated Form 990-PF for fiscal year 2022 (received by the IRS August 7, 2023)
  7. Updated Form 990-PF for fiscal year 2023 (received by the IRS May 10, 2024)

Explore Open Grants

Browse active grant opportunities in Marcia & Philip Rothblum Foundation's focus areas in our free grants database

Similar Funders

Funders that support many of the same organizations

Aetna Foundation Inc

Hartford, CT

Aetna Foundation supported health and wellness, access to health care, and related community needs; its 2021 grants ranged from $5,000 to $1 million, with a median of $40,000, and went to organizations across multiple states, especially in D.C. and Connecticut. Its 2021 filing was marked final, so it appears to have ended or be winding down grantmaking; that filing said there were no restrictions on who could apply and pointed applicants to its website for application materials.

Assets

—

Grants

65

Total Given

$7.2M

The Warburg Pincus Foundation

New York, NY

The Warburg Pincus Foundation supports charitable, educational, and community organizations across fields including the arts, education, journalism, health care, and basic needs, with most 2025 grant dollars going to New York organizations and additional giving in other U.S. states and more than 20 countries. Its 2025 grants ranged from $60 to $492,500, with a median of $6,000. It does not accept unsolicited requests and gives only to preselected organizations.

Assets

$2.2M

Grants

297

Total Given

$5.5M

The Rockefeller Foundation

New York, NY

The Rockefeller Foundation funds initiatives in energy access, sustainable food systems, health, climate, economic opportunity, and finance in the United States and around the world. In 2024, it made 381 grants, with a median grant of about $171,000, though awards ranged widely; it does not accept unsolicited requests and funds preselected organizations only.

Assets

$6.4B

Grants

381

Total Given

$233.2M

The Lazard Charitable Foundation

New York, NY

Philanthropy, Voluntarism & Grantmaking

Assets

$10K

Grants

437

Total Given

$1.6M

Mutual of America Foundation

New York, NY

Philanthropy, Voluntarism & Grantmaking

Assets

$136K

Grants

539

Total Given

$839K

The Yelp Foundation

San Francisco, CA

Philanthropy, Voluntarism & Grantmaking

Assets

$6.2M

Grants

644

Total Given

$886K

More similar funders

More Funders in New York

The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open

Figures come from Marcia & Philip Rothblum 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.

Marcia & Philip Rothblum Foundation down — hundreds of funders to go?

Want AI to do this for you?