Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC

Private foundation · Grantmaker Palm Beach, FL EIN: 46-3176081

Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC is a private foundation, based in Palm Beach, FL. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $327.1M in total assets. In 2024, it awarded 5 grants totaling $573K. Net investment income was $9.1M.

Key facts about Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC

In short: Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC gave $573K across 5 grants in 2024 (avg $115K), top state Massachusetts. Source: 2024 IRS Form 990-PF.

EIN
46-3176081
Latest 990 filing
Form 990-PF, 2024
Annual giving (2024)
$573,250
Grants made (2024)
5
Average grant
$114,650
Median grant
$100,000
Total assets
$327,093,230
Primary geography
Massachusetts (45% of itemized 2024 grant dollars)

Data from IRS Form 990-PF, 2024; updated October 2026.

Financial Overview

From 2024 IRS Form 990-PF · View filing

Total Assets

$327.1M

+2.6% YoY

Annual Giving

$573K

+51.1% YoY

Grant Count

5

+25.0% YoY

Avg Grant Size

$115K

+20.8% YoY

Under IRS private-foundation payout rules, Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC reported a distributable amount of $25.1M for 2024 — the minimum it must pay out in qualifying distributions.

How Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC gives

  • Giving grew 4069% from 2021 to 2024. Method
  • In 2024 it paid out 107% of its IRS minimum distribution (the 5% rule). Method

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

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Geographic Focus

Where this funder awards grants

Grant Distribution by State

5states

Share of 2024 grant dollars across all 5 itemized grants.

Cities

San FranciscoNew YorkAmherstWest TisburyLouisvilleSeattle

Giving Over Time

Total grant dollars and number of grants per year

$0$200K$400K$600K4 grants2020 1 grant2021 3 grants2022 4 grants2023 5 grants2024

From 2020 to 2024, annual grant giving ranged from $14K (2021) to $573K (2024). In 2024 it made 5 grants totaling $573K.

Grant Insights

How this funder distributes its grants

Top Recipients

Top 5 recipients in 2024

Island Housing Trust: $250KIsland Housing Trust$250K60 Decibals Inc: $130K60 Decibals Inc$130KGlobal Partnerships: $100KGlobal Partnerships$100KMCE Social Capital: $83KMCE Social Capital$83KUniversity of Massachusetts Amherst Foundation: $10KUniversity of MassachusettsAmherst Foundation$10K

The largest 2024 recipient was Island Housing Trust ($250K). Together the top 5 received $573K.

Grant Size Distribution

17 grants across all recorded years

6<$50K7$50–100K2$100–250K2$250–500K$500K–1M$1–5M$5M+

The most common grant size was in the $50–100K range: 7 grants of 17 (41%).

Giving History

Grant recipients and amounts by year

RecipientPurposeAmount
Island Housing Trust West Tisbury, MAGeneral Operational Support$250,000
60 Decibals Inc New York, NYGeneral Operational Support$130,000
Global Partnerships Seattle, WAGeneral Operational Support$100,000
MCE Social Capital San Francisco, CAGeneral Operational Support$83,250
University of Massachusetts Amherst Foundation Amherst, MAGeneral Operational Support$10,000

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$50M$100M$150M$200M2020 2021 2022 2023 2024
Metric202420232022
Total Assets$327,093,230$318,692,925$312,514,492
Revenue$12,174,450$8,888,921$178,857,843
Expenses$3,777,630$3,217,145$2,297,021
Qualifying Distributions$26,839,688$27,680,115$18,218,893
Net Investment Income$9,145,240$6,674,857$5,314,063
Distributable Amount$25,107,819$24,055,561$23,551,717

Data update history

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2020 (received by the IRS November 15, 2021)
  2. Updated Form 990-PF for fiscal year 2021 (received by the IRS February 14, 2023)
  3. Updated Form 990-PF for fiscal year 2022 (received by the IRS November 15, 2023)
  4. Updated Form 990-PF for fiscal year 2023 (received by the IRS May 1, 2025)
  5. Updated Form 990-PF for fiscal year 2024 (received by the IRS November 17, 2025)
  6. IRS filings on file for fiscal years 2020–2024

Leadership & Key People

Officers and directors from IRS filings

Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC is led by Diane S. Isenberg, Director & President on every filing since 2020; none of the 6 officers listed in 2024 report compensation.

Officers on the 2024 filing

  • Diane S. Isenberg

    Director & President

    On filings since 2020

    0.2 hrs/week

    No compensation reported

  • Greg Neichin

    Director & Vice President

    On filings since 2020

    1 hr/week

    No compensation reported

  • Robert Dumont

    Director

    On filings since 2020

    0.2 hrs/week

    No compensation reported

  • Rose Evangelista

    Director & Secretary

    On filings since 2020

    0.2 hrs/week

    No compensation reported

  • Stefan Freeman

    Director

    On filings since 2020

    0.2 hrs/week

    No compensation reported

  • Jennifer R. Einziger

    Treasurer

    On filings since 2020

    0.2 hrs/week

    No compensation reported

Former officers (1)
  • Former: David Freeman (2020–2022) — Director

Data from IRS Form 990 filings, 2020–2024. "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 Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC

How much does Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC give each year?

Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC gave $573K across 5 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $380K across 4 grants.

What is Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC's typical grant size?

Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC's median grant in 2024 was $100,000, and its average grant was $114,650, across 5 grants on its 2024 IRS Form 990-PF.

Where does Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC give grants?

Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC's top state is Massachusetts, with 45% of the grant dollars itemized on its 2024 IRS Form 990-PF. The next largest states were New York (23%) and Washington (17%).

Does Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC give general operating support?

Yes: 100% of Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC's 2024 grants with a stated purpose (5 of 5) were for general or operating support, per its 2024 IRS Form 990-PF.

Who are Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC's largest grantees?

Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC's largest 2024 grantees include Island Housing Trust ($250,000), 60 Decibals Inc ($130,000) and Global Partnerships ($100,000), according to its 2024 IRS Form 990-PF. Together they received 84% of its itemized 2024 grant dollars.

How large is Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC?

Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC reported $327.1M in total assets on its 2024 IRS Form 990-PF. It paid out $26.8M in qualifying distributions that year, against a required minimum of $25.1M (roughly 5% of its investment assets).

What is Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC's EIN?

Isenberg Family Charitable Foundation Inc C/O Ceniarth LLC's EIN (Employer Identification Number) is 46-3176081. IRS Form 990 filing data is available on this page for 2020–2024.

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

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