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.

Key facts about Samstone Foundation

EIN
47-6586278
Latest 990 filing
Form 990-PF, 2025
Total assets
$1,405,135

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

Financial Overview

From 2025 IRS Form 990-PF · View filing

Total Assets

$1.4M

+0.3% YoY

Revenue

$123K

-7.7% YoY

Qualifying Distributions

$102K

-52.8% YoY

Expenses

$117K

-49.3% YoY

How Samstone Foundation gives

  • Giving held roughly steady from 2021 to 2024 (+0%). 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

1state

States

Cities

Princeton

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.

Grant Insights

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%).

Giving History

Grant recipients and amounts by year

No grants recorded for 2025.

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$100K$200K$300K2019 2020 2021 2022 2023 2024 2025
Metric202520242023
Total Assets$1,405,135$1,400,307$1,497,674
Revenue$122,727$132,913$50,092
Expenses$116,829$230,423$194,856
Qualifying Distributions$102,338$216,707$182,278
Net Investment Income$105,001$110,948$34,114

Data update history

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

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.

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