Six Tree Foundation
Preselected recipients only
Six Tree Foundation is a private foundation in Atherton, California. In tax year 2025 it gave $1.1 million in 16 grants; the typical grant was $25,000 and the largest $400,000. It only gives to organizations it selects itself and does not accept unsolicited applications.
From its IRS Form 990-PF for tax year 2025.
- Grants paid, 2025$1.1 million
- Number of grants16
- Typical grant$25,000
- Largest grant$400,000
- Assets$1.9 million
- New grantees25%
Giving in 2025 was up from $707,500 the year before.
25% of its 2025 grantees had not received a grant from it the year before, a mix of repeat and new grantees.
Giving by year
| Tax year | Grants paid | Number of grants | Assets |
|---|---|---|---|
| 2023 | $730,000 | 11 | $2.3 million |
| 2024 | $707,500 | 14 | $2.2 million |
| 2025 | $1.1 million | 16 | $1.9 million |
How to apply
Six Tree Foundation says in its IRS filing that it only makes contributions to preselected organizations, so unsolicited applications are unlikely to be considered. Organizations it funds are usually invited.
What Six Tree Foundation funds
Where it gives
Its grants went to recipients in 7 states, the most to Arizona.
| State | Grants | Amount |
|---|---|---|
| Arizona | 2 | $420,000 |
| California | 6 | $286,500 |
| Hawaii | 4 | $225,000 |
| District of Columbia | 1 | $50,000 |
| Washington | 1 | $35,000 |
| Delaware | 1 | $25,000 |
| New York | 1 | $25,000 |
Grants paid in 2025
| Recipient | Purpose | Amount |
|---|---|---|
| Arizona State University Fdn | Unrestricted gift | $400,000 |
| Mid-Pacific Institute | Unrestricted gift | $150,000 |
| California Community Fund | Unrestricted gift | $100,000 |
| Gladstone Foundation | Unrestricted gift | $87,500 |
| US Japan Council | Unrestricted gift | $50,000 |
| Stanford University | Unrestricted gift | $50,000 |
| Foundation for International Understanding Through Students | Unrestricted gift | $35,000 |
| Purple Maia Foundation | Unrestricted gift | $25,000 |
| Nishimachi Foundation the Corp Trust Co | Unrestricted gift | $25,000 |
| Risehi Foundation | Unrestricted gift | $25,000 |
| Okinawa Institute of Science and Technology Foundation | Unrestricted gift | $25,000 |
| University of California Santa Barbara | Unrestricted gift | $25,000 |
| Pacific International Center for High Technology Research (Pichtr) | Unrestricted gift | $25,000 |
| Japanese Friendship Gardens of Phoenix | Unrestricted gift | $20,000 |
| Menlo College | Unrestricted gift | $15,000 |
| Kristi Yamaguchis Always Dream | Unrestricted gift | $9,000 |
Officers and trustees
- Andrew Ogawa
- Arden Trust Company
Questions people ask
Does Six Tree Foundation accept grant applications?
No. Its IRS filing says it only makes contributions to preselected organizations.
How much does Six Tree Foundation give?
$1.1 million in tax year 2025, across 16 grants, with a typical grant of $25,000.
Who runs Six Tree Foundation?
Its 2025 filing lists Andrew Ogawa (President) and Arden Trust Company (Agent for Trustee).
What does Six Tree Foundation fund?
Based on its grants, mainly education, international and science and research.