The Okinaga Foundation
The Okinaga Foundation is a private foundation, based in Garden City, NY. IRS filing data is available from 2021 through 2025. As of 2025, the organization holds $8.6M in total assets. In 2025, it awarded 3 grants totaling $490K. Net investment income was $212K.
The Okinaga Foundation at a glance
In short: The Okinaga Foundation gave $490K across 3 grants in 2025 (avg $163K), top state Massachusetts. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $490,000
- -36.0% vs 2024
- Grants made (2025)
- 3
- +0.0% vs 2024
- Average grant
- $163,333
- -36.0% vs 2024
- Median grant
- $140,000
- Total assets
- $8,564,191
- +0.6% vs 2024
- Primary geography
- Massachusetts (20% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026.
Who The Okinaga Foundation funds
How this funder distributes its grants
Top Recipients
Top 3 recipients in 2025
The largest 2025 recipient was Teikyo University of Japan in Durham ($250K). Together the top 3 received $490K.
Grant Size Distribution
10 grants across all recorded years
The most common grant size was in the $100–250K range: 6 grants of 10 (60%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 3 itemized grants.
States
Cities
How The Okinaga Foundation gives
- Giving grew 233% from 2022 to 2025. Method
- In 2025 it paid out 127% of its IRS minimum distribution (the 5% rule). 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
From 2021 to 2025, annual grant giving ranged from $100K (2021) to $766K (2024). In 2025 it made 3 grants totaling $490K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Teikyo University of Japan in Durham | Educational Support | $250,000 |
| Teikyo (Malaysia) SDN BHD | Educational Support | $140,000 |
| Harvard School of Public Health Boston, MA | Educational Support | $100,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $8,564,191 | $227,399 | $546,308 | $490,000 | 3 | $530,242 | $211,742 | $416,400 |
| 2024 | $8,509,520 | $105,627 | $815,400 | $766,000 | 3 | $800,533 | $91,204 | $419,287 |
| 2023 | $8,567,666 | $538,824 | $150,444 | $100,000 | 1 | $148,862 | $77,641 | $248,978 |
| 2022 | $3,069,112 | $231,227 | $231,092 | $147,150 | 2 | $221,547 | $221,734 | $176,040 |
| 2021 | $3,750,281 | $152,921 | $149,329 | $100,000 | 1 | — | $141,768 | $168,036 |
Under IRS private-foundation payout rules, The Okinaga Foundation reported a distributable amount of $416K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Okinaga Foundation is led by Hiroko Okinaga, President & Treasurer on every filing since 2021; 1 of 4 officers listed in 2025 is compensated.
Officers on the 2025 filing
Hiroko Okinaga
President & Treasurer
On filings since 2021
1 hr/week
No compensation reported
Yoshihito Okinaga
Chairman
On filings since 2021
1 hr/week
No compensation reported
Tomoatsu Inoue
Trustee
On filings since 2021
1 hr/week
No compensation reported
Michiko Ito Crampe
Secretary
On filings since 2021
1 hr/week
$2K (2021) → $2K (2025)
Data from IRS Form 990 filings, 2021–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $2K, to Ms Michiko Ito Crampe (Secretary).
Frequently asked questions about The Okinaga Foundation
How much does The Okinaga Foundation give each year?
The Okinaga Foundation gave $490K across 3 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $766K across 3 grants.
What is The Okinaga Foundation's typical grant size?
The Okinaga Foundation's median grant in 2025 was $140,000, and its average grant was $163,333, across 3 grants on its 2025 IRS Form 990-PF.
Where does The Okinaga Foundation give grants?
The Okinaga Foundation's top state is Massachusetts, with 20% of the grant dollars itemized on its 2025 IRS Form 990-PF.
Does The Okinaga Foundation give general operating support?
Not in 2025: none of the 3 grants with a stated purpose on The Okinaga Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Educational Support" (3 grants).
How large is The Okinaga Foundation?
The Okinaga Foundation reported $8.6M in total assets on its 2025 IRS Form 990-PF. It paid out $530K in qualifying distributions that year, against a required minimum of $416K (roughly 5% of its investment assets).
What is The Okinaga Foundation's EIN?
The Okinaga Foundation's EIN (Employer Identification Number) is 42-1354468. IRS Form 990 filing data is available on this page for 2021–2025.
Data last updated October 2026. Sourced from IRS Form 990-PF filings.
Data update history
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2021 (received by the IRS November 3, 2021)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS April 10, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS April 16, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS December 18, 2024)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS December 23, 2025)
- IRS filings on file for fiscal years 2021–2025
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