Samstone Foundation

Private foundation · Grantmaker Old Greenwich, CT EIN: 47-6586278

Samstone Foundation is a private foundation, based in Old Greenwich, CT. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $1.4M in total assets. In 2025, it made $102K in qualifying distributions. Net investment income was $105K.

Samstone Foundation at a glance

Total assets
$1,405,135
+0.3% vs 2024
Revenue (2025)
$122,727
-7.7% vs 2024
Qualifying distributions (2025)
$102,338
-52.8% vs 2024
Expenses (2025)
$116,829
-49.3% vs 2024
Latest 990 filing
Form 990-PF, 2025 View filing

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

Who Samstone Foundation funds

How this funder distributes its grants

Grant Size Distribution

4 grants across all recorded years

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

The most common grant size was in the $100–250K range: 3 grants of 4 (75%).

Geographic Focus

Where this funder awards grants

Grant Distribution by State

1state

States

Cities

Princeton

How Samstone Foundation gives

  • Giving held roughly steady from 2021 to 2024 (+0%). 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$50K$100K$150K1 grant2019 1 grant2020 1 grant2021 1 grant2022 1 grant2023 1 grant2024 0 grants2025

From 2019 to 2024, annual grant giving ranged from $80K (2023) to $150K (2019). In 2024 it made 1 grant totaling $100K.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
Princeton University Princeton, NJGeneral Support$100,000
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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$1,405,135$122,727$116,829——$102,338$105,001—
2024$1,400,307$132,913$230,423$100,0001$216,707$110,948—
2023$1,497,674$50,092$194,856$80,0001$182,278$34,114—
2022$1,642,608$8,403$211,172$100,0001$200,822$30,431—
2021$1,845,596$249,010$189,739$100,0001$182,800$236,841—
2020$1,786,915$67,559$182,147$85,0001—$45,221—
2019$1,901,505$99,129$190,970$150,0001—$74,443$96,999

Leadership & Key People

Officers and directors from IRS filings

Samstone Foundation's 2025 filing lists 2 officers; none of the 2 officers listed in 2025 report compensation.

Officers on the 2025 filing

  • Hyungkwon Kim

    Trustee

    On filings since 2019

    No compensation reported

  • Yoonsoo Choi

    Trustee

    On filings since 2019

    No compensation reported

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 Samstone Foundation

How large is Samstone Foundation?

Samstone Foundation reported $1.4M in total assets on its 2025 IRS Form 990-PF. Its revenue that year was $123K.

Where does Samstone Foundation operate?

Samstone Foundation has awarded grants in New Jersey.

What is Samstone Foundation's EIN?

Samstone Foundation's EIN (Employer Identification Number) is 47-6586278. IRS Form 990 filing data is available on this page for 2019–2025.

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

Data update history

(3)

When this profile's IRS filing data changed on Grantable

  1. Added Form 990-PF for fiscal year 2019 (received by the IRS April 22, 2020)
  2. Added Form 990-PF for fiscal year 2025 (received by the IRS April 29, 2026)
  3. IRS filings on file for fiscal years 2020–2024

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

Figures come from Samstone 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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