HAROLD KL CASTLE FOUNDATION
Kailua, HI, US
•
501(c)3
•
EIN
99-6005445
•
•
Open for Solicitation
Private Foundation
Regional Funder
Kailua, HI, US
•
501(c)3
•
EIN
99-6005445
•
•
Open for Solicitation
Private Foundation
Regional Funder
AI Summary
HAROLD KL CASTLE FOUNDATION is a 501(c)(3) grantmaker with $6.7M in grants paid across 50 grantees in filing year 2024. It is open for unsolicited proposals; prospective applicants should review the How to Apply section of the current profile page to assess fit.
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Cause Areas
1
Foundations
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Explore this org's ecosystem
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Learn about Ecosystems
Grantee
Total Funding
Funding Share

UNIVERSITY OF HAWAII FOUNDATION
Honolulu, HI
$7.9M
22%

HAWAII COMMUNITY FOUNDATION
Honolulu, HI
$5M
14%

THE NATURE CONSERVANCY
ARLINGTON, VA
$1.5M
4%
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Total No. of Grants
108
Median 1st year grant
$40K
Median 2nd year grant
$50K
Top 3 Grants
Matched grants only
Grantee
Grant Size
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- 139 grantees
- 21 board & team members
- 10 historic 990s & financials
- 6-year operating budget trend
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Frequently Asked Questions
Can I submit an unsolicited grant proposal to HAROLD KL CASTLE FOUNDATION?
Yes. HAROLD KL CASTLE FOUNDATION accepts unsolicited proposals for funding. You can find details in the How to Apply section on this profile or by visiting their website.
Where does HAROLD KL CASTLE FOUNDATION give?
HAROLD KL CASTLE FOUNDATION primarily gives to organizations located in Hawaii, Virginia, and California. These states represent the largest share of the foundation’s grantmaking by dollars awarded. Additional geographic details are available to registered users.
What size are HAROLD KL CASTLE FOUNDATION’s grants?
The largest share of grants from HAROLD KL CASTLE FOUNDATION fall in the $5,000 to $25 thousand range. The median first-year grant is about $40 thousand. More detailed grant size data is available to registered users.
How many grants does HAROLD KL CASTLE FOUNDATION make each year?
In 2024, HAROLD KL CASTLE FOUNDATION awarded about 110 grants, totaling nearly $6.7 million. More detailed grant metrics are available to registered users.
Who did HAROLD KL CASTLE FOUNDATION fund recently?
In 2024, HAROLD KL CASTLE FOUNDATION awarded grants to about 140 grantees. Recent grantees include UNIVERSITY OF HAWAII FOUNDATION, HAWAII COMMUNITY FOUNDATION, and THE NATURE CONSERVANCY. More detailed information on all recent recipients is available to registered users.
How do we apply to HAROLD KL CASTLE FOUNDATION?
You can find details on how to apply in the How to Apply section on this profile or by visiting HAROLD KL CASTLE FOUNDATION’s website.
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