The Heartstone Foundation

Private foundation · Grantmaker Brookline, MA EIN: 20-6197750

The Heartstone Foundation is a private foundation, based in Brookline, MA. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $13.7M in total assets. In 2025, it awarded 6 grants totaling $874K. Net investment income was $772K.

Key facts about The Heartstone Foundation

In short: The Heartstone Foundation gave $874K across 6 grants in 2025 (avg $146K), mostly in New York. Source: 2025 IRS Form 990-PF.

EIN
20-6197750
Latest 990 filing
Form 990-PF, 2025
Annual giving (2025)
$873,911
Grants made (2025)
6
Average grant
$145,652
Median grant
$87,500
Total assets
$13,694,880
Primary geography
New York (57% of itemized 2025 grant dollars)

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

Financial Overview

From 2025 IRS Form 990-PF · View filing

Total Assets

$13.7M

-1.2% YoY

Annual Giving

$874K

-23.0% YoY

Grant Count

6

+50.0% YoY

Avg Grant Size

$146K

-48.7% YoY

Under IRS private-foundation payout rules, The Heartstone Foundation reported a distributable amount of $922K for 2025 — the minimum it must pay out in qualifying distributions.

How The Heartstone Foundation gives

  • Giving held roughly steady from 2022 to 2025 (−9%). Method
  • In 2025 it paid out 96% 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.

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Geographic Focus

Where this funder awards grants

Grant Distribution by State

3states

Share of 2025 grant dollars across all 6 itemized grants.

Cities

CincinnatiBrooklineConcordDeerfieldNew YorkNewtonChestnut HillHardwick

Giving Over Time

Total grant dollars and number of grants per year

$0$500K$1M$1.5M2 grants2020 2 grants2021 3 grants2022 2 grants2023 4 grants2024 6 grants2025

From 2020 to 2025, annual grant giving ranged from $795K (2020) to $1.1M (2024). In 2025 it made 6 grants totaling $874K.

Grant Insights

How this funder distributes its grants

Top Recipients

Top 6 recipients in 2025

American Friends of Magen David Adom: $500KAmerican Friends of MagenDavid Adom$500KConcord Academy: $100KConcord Academy$100KThe Belmont School: $90KThe Belmont School$90KEagle Foundation of Massachusetts: $85KEagle Foundation ofMassachusetts$85KFidelity Charitable: $70KFidelity Charitable$70KTemple Ohabei Shalom: $29KTemple Ohabei Shalom$29K

The largest 2025 recipient was American Friends of Magen David Adom ($500K). Together the top 6 received $874K.

Grant Size Distribution

17 grants across all recorded years

1<$50K4$50–100K6$100–250K$250–500K6$500K–1M$1–5M$5M+

The most common grant size was in the $100–250K range: 6 grants of 17 (35%).

Giving History

Grant recipients and amounts by year

RecipientPurposeAmount
American Friends of Magen David Adom New York, NYGeneral Charitable Support$500,000
Concord Academy Concord, MAGeneral Charitable Support$100,000
The Belmont School Deerfield, MAGeneral Charitable Support$90,000
Eagle Foundation of Massachusetts Hardwick, MAGeneral Charitable Support$85,000
Fidelity Charitable Cincinnati, OHGeneral Charitable Support$69,601
Temple Ohabei Shalom Brookline, MAGeneral Charitable Support$29,310

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$500K$1M$1.5M$2M2020 2021 2022 2023 2024 2025
Metric202520242023
Total Assets$13,694,880$13,864,238$13,725,618
Revenue$814,961$1,524,324$831,254
Expenses$984,319$1,385,704$1,040,564
Qualifying Distributions$881,458$1,143,919$506,625
Net Investment Income$772,445$979,631$797,315
Distributable Amount$922,304$883,411$811,187

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 May 14, 2021)
  2. Updated Form 990-PF for fiscal year 2021 (received by the IRS October 26, 2022)
  3. Updated Form 990-PF for fiscal year 2022 (received by the IRS May 2, 2023)
  4. Updated Form 990-PF for fiscal year 2023 (received by the IRS November 14, 2024)
  5. Updated Form 990-PF for fiscal year 2024 (received by the IRS July 9, 2025)
  6. Added Form 990-PF for fiscal year 2025 (received by the IRS May 13, 2026)

Leadership & Key People

Officers and directors from IRS filings

The Heartstone Foundation is led by Julie Swartz, Trustee on every filing since 2020 — the only officer listed, and uncompensated.

Officers on the 2025 filing

  • Julie Swartz

    Trustee

    On filings since 2020

    1 hr/week

    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 The Heartstone Foundation

How much does The Heartstone Foundation give each year?

The Heartstone Foundation gave $874K across 6 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $1.1M across 4 grants.

What is The Heartstone Foundation's typical grant size?

The Heartstone Foundation's median grant in 2025 was $87,500, and its average grant was $145,652, across 6 grants on its 2025 IRS Form 990-PF.

Where does The Heartstone Foundation give grants?

The Heartstone Foundation gives mostly in New York: 57% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest states were Massachusetts (35%) and Ohio (8%).

Does The Heartstone Foundation give general operating support?

Yes: 100% of The Heartstone Foundation's 2025 grants with a stated purpose (6 of 6) were for general or operating support, per its 2025 IRS Form 990-PF.

Who are The Heartstone Foundation's largest grantees?

The Heartstone Foundation's largest 2025 grantees include American Friends of Magen David Adom ($500,000), Concord Academy ($100,000) and The Belmont School ($90,000), according to its 2025 IRS Form 990-PF. Together they received 79% of its itemized 2025 grant dollars.

How large is The Heartstone Foundation?

The Heartstone Foundation reported $13.7M in total assets on its 2025 IRS Form 990-PF. It paid out $881K in qualifying distributions that year, against a required minimum of $922K (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.

What is The Heartstone Foundation's EIN?

The Heartstone Foundation's EIN (Employer Identification Number) is 20-6197750. IRS Form 990 filing data is available on this page for 2020–2025.

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

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