Aronson Family Foundation

Private foundation · Grantmaker Westport, CT EIN: 13-3693381

Aronson Family Foundation is a private foundation, based in Westport, CT. IRS filing data is available from 2020 through 2024. In 2024, it awarded 2 grants totaling $11.1M. Net investment income was $520K.

Key facts about Aronson Family Foundation

In short: Aronson Family Foundation gave $11.1M across 2 grants in 2024 (avg $5.5M), mostly in New York. Source: 2024 IRS Form 990-PF.

EIN
13-3693381
Latest 990 filing
Form 990-PF, 2024
Annual giving (2024)
$11,087,805
Grants made (2024)
2
Average grant
$5,543,903
Median grant
$5,543,903
Primary geography
New York (97% of itemized 2024 grant dollars)

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

Financial Overview

From 2024 IRS Form 990-PF · View filing

Total Assets

—

-100.0% YoY

Annual Giving

$11.1M

+3209.8% YoY

Grant Count

2

+100.0% YoY

Avg Grant Size

$5.5M

+1554.9% YoY

Under IRS private-foundation payout rules, Aronson Family Foundation reported a distributable amount of $468K for 2024 — the minimum it must pay out in qualifying distributions.

How Aronson Family Foundation gives

  • Giving grew 1667% from 2021 to 2024. Method
  • In 2024 it paid out well above 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

2states

Share of all 2 itemized 2024 grant dollars.

Cities

WestportPurchase

Giving Over Time

Total grant dollars and number of grants per year

$0$5M$10M$15M2 grants20201 grants20211 grants20221 grants20232 grants2024

From 2020 to 2024, annual grant giving ranged from $335K (2023) to $11.1M (2024). In 2024 it made 2 grants totaling $11.1M.

Grant Insights

How this funder distributes its grants

Top Recipients

Top 2 recipients in 2024

Ms Global Impact Funding Trust: $10.8MMs Global Impact Funding Trust$10.8MSee Statement a: $329KSee Statement a$329K

The largest 2024 recipient was Ms Global Impact Funding Trust ($10.8M). Together the top 2 received $11.1M.

Grant Size Distribution

7 grants across all recorded years

<$50K$50–100K1$100–250K3$250–500K2$500K–1M$1–5M1$5M+

The most common grant size was in the $250–500K range: 3 grants of 7 (43%).

Giving History

Grant recipients and amounts by year

RecipientPurposeAmount
Ms Global Impact Funding Trust Purchase, NYTo make distributions to public charities under irc section 509(a)(1) & (2) for charitable purposes aligned to the mission of the aronson family foundation.$10,758,805
See Statement a Westport, CTSee Statement a$329,000

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$5M$10M$15M20202021202220232024
Metric202420232022
Total Assets—$10,608,816$10,849,187
Revenue$594,156$160,168$2,477,708
Expenses$11,202,972$400,539$840,271
Qualifying Distributions$11,128,641$341,441$724,653
Net Investment Income$519,825$384,582$2,399,832
Distributable Amount$467,970$479,221$502,961

Data update history

When this profile's IRS filing data changed on Grantable

  1. IRS filings on file for fiscal years 2020–2024

Leadership & Key People

Officers and directors from IRS filings

Aronson Family Foundation's 2024 filing lists 4 officers; none of the 4 officers listed in 2024 report compensation.

Officers on the 2024 filing

  • Henry W. Berinstein

    Trustee

    On filings since 2020

    15 hrs/week

    $48K (2020) → $0 (2024)

  • Joan Poster

    Trustee

    On filings since 2020

    15 hrs/week

    No compensation reported

  • Cynthia Poster Eigen

    Trustee

    On filings since 2022

    10 hrs/week

    No compensation reported

  • Meredith Poster

    Trustee

    On filings since 2022

    10 hrs/week

    No compensation reported

Former officers (2)
  • Former: Dennis B. Poster- Dec (2022) — Trustee
  • Former: Dennis B. Poster (2020–2021) — Trustee

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.

Compensation Overview

From 2022 IRS filing

Dennis B Poster- Dec 62022 — Trustee: $48KDennis B Poster- Dec…Trustee$48KHenry W Berinstein — Trustee: $48KHenry W BerinsteinTrustee$48K

The highest reported compensation on the 2022 filing was $48K, to Dennis B Poster- Dec 62022 (Trustee). 2 officers or directors reported compensation on that filing.

Frequently asked questions about Aronson Family Foundation

How much does Aronson Family Foundation give each year?

Aronson Family Foundation gave $11.1M across 2 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $335K across 1 grant.

Where does Aronson Family Foundation operate?

Aronson Family Foundation has awarded grants in Connecticut, New York.

How much is Aronson Family Foundation required to give away each year?

Private foundations must generally distribute about 5% of their assets annually. For 2024, Aronson Family Foundation reported a distributable amount of $468K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.

What is Aronson Family Foundation's EIN?

Aronson Family Foundation's EIN (Employer Identification Number) is 13-3693381. IRS Form 990 filing data is available on this page for 2020–2024.

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

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