Harold KL Castle Foundation
Accepts applications
Harold KL Castle Foundation is a private foundation in Kailua, Hawaii. In tax year 2024 it gave $6.7 million in 106 grants; the typical grant was $25,000 and the largest $550,000. It accepts applications; its filing gives the instructions below.
From its IRS Form 990-PF for tax year 2024.
- Grants paid, 2024$6.7 million
- Number of grants106
- Typical grant$25,000
- Largest grant$550,000
- Assets$199 million
- New grantees52%
Giving in 2024 was down from $7.3 million the year before.
52% of its 2024 grantees had not received a grant from it the year before, a sign it is open to new organizations.
Giving by year
| Tax year | Grants paid | Number of grants | Assets |
|---|---|---|---|
| 2023 | $7.3 million | 111 | $191 million |
| 2024 | $6.7 million | 106 | $199 million |
How to apply
| Contact | Elizabeth Murph 1197 Auloa Road, Kailua, HI 96734 |
|---|---|
| Phone or email | (808) 263-7073 |
Foundation website IRS filings on ProPublica
What Harold KL Castle Foundation funds
Where it gives
Its grants went to recipients in 3 states, the most to Hawaii.
| State | Grants | Amount |
|---|---|---|
| Hawaii | 97 | $5.7 million |
| California | 5 | $935,000 |
| District of Columbia | 4 | $265,663 |
Grants paid in 2024
| Recipient | Purpose | Amount |
|---|---|---|
| Social Finance Inc | Proposal to serve as hawaii renewable learning fund manager [6086; pc] | $550,000 |
| University of Hawaii Foundation | Soar higher - support for windward oahu schools to participate as a gear up 6-16 model [5173; pc] | $529,240 |
| Hawaii Community Foundation (HCF) | Support for a second round of contributions to the holomua pooled fund whose goal is to improve marine resources management in hawaii through a suite of efforts built on four pillars: place-based planning, pono practices, monitoring, and protection & restoration [5905; pc] | $500,000 |
| Kuaaina Ulu Auamo (Kua) | To support and strengthen this critically important backbone organization and its three community-driven networks for ocean management in hawaii. [5598; pc] | $500,000 |
| Hawaii Community Foundation (HCF) | Pilina fund 2.0 [5618; pc] | $400,000 |
| The Nature Conservancy of Hawaii | Advancing community-based marine management to reach 30x30 goals [5660; pc] | $280,000 |
| University of Hawaii Foundation | To extend windward community college's groundbreaking hoolei scholarship that ensures all public school graduates in the koolau region can afford to attend community college [6140; pc] | $214,286 |
| Hawaii Hospital Education and Research Foundation (Hherf) | To retrofit doe classrooms for healthcare pathways in partnership with hawaii 3r's, g70 and hawaii pacific health [6363; pc] | $150,000 |
| University of Hawaii Foundation | Hawaii p-20 core support 2022-2025 [5465; pc] | $150,000 |
| Windward School District | To internally drive windward doe schools towards aina aloha mindset achievement through teacher professional development (pd) days and closer engagement between schools and aina-based education organizations. [6371; gov] | $150,000 |
| Purple Maia | For the expansion of halau hekili, a middle college high school on the campus of windward community college. [6277; pc] | $145,000 |
| Hawaii Conservation Alliance Foundation | For the next phase of the ahupuaa accelerator, a program to expand watershed-wide community management that has expanded to 46 partners statewide. [6153; pc] | $132,715 |
| Resources Legacy Fund | To help advance the holomua initiative and the care for aina now coalition (formerly green fee) environmental capital formation work [6125; pc] | $120,000 |
| The American Ai Forum Aka Ai Education Project | To deliver professional development that helps hawaii public school teachers better understand artificial intelligence (ai) and how to responsibly incorporate ai literacy into their curriculum. [6286; pc] | $115,000 |
| College Summit Inc DBA Peerforward | To scale a promising peer counseling model to four additional high schools. [6267; pc] | $103,163 |
| C&c of Honolulu Office of Climate Change Sustainability and Resiliency | To help the honolulu city & county optimize its climate adaptation work aligned with the foundation's new climate strategy [5860; gov] | $100,000 |
| Hawaiian Islands Land Trust (Hilt) | To continue to work in close partnership with the trust for public lands to secure priority lands for community use and aina aloha mindset development in windward oahu. [6259; pc] | $100,000 |
| New Teacher Center | To work alongside the hawaii department of education in building the support and resources that enable complex area leaders to bring effective mathematics coaching to their school communities [6372; pc] | $100,000 |
| Conservation International Foundation | Puulau project: a two-year effort to combine additional knowledge bases from fishers and community with wester-science based monitoring data to improve participation and decision making for the holomua initiative. [5588; pc] | $95,000 |
| Koolau Foundation | Catalyst funding to develop the haiku valley cultural preserve [5907; pc] | $75,000 |
| Kualoa-Heeia Ecumenical Youth Project (Key) | To bolster response to the little fire ant in koolauloa and koolaupoko through grassroots community education, training, monitoring, and response [6133; pc] | $75,000 |
| The Pacific American Foundation (Paf) | For the launch of an esports development program in windward oahu schools [6127; pc] | $75,000 |
| College Summit Inc DBA Peerforward | Peers leading peers through higher education [5516; pc] | $70,000 |
| 50CAN | Core organizational support for hawaiikidscan, an education advocacy organization committed to ensure that hawaii has an excellent and equitable education system [5898; pc] | $67,500 |
| Public Schools Hawaii Foundation | To launch a new effort that combines human and artificial intelligence to expand student support by offering more personalized navigational guidance and improving academic performance through targeted interventions. [6283; pc] | $67,500 |
| Center for Tomorrow's Leaders | To strengthen the persuasive communication and writing of the roughly 300 high school students served each year [6368; pc] | $60,000 |
| Hawaii Alliance of Nonprofit Organizations | To help nonprofits engage in policy, work with data to develop clearer outcomes, and develop stronger revenue streams [6378; pc] | $60,000 |
| Hawaii Chamber of Commerce Foundation | To support employer collaboratives that help ensure students in hawaii are on clear pathways to high skill, high wage, in-demand careers and that help hawaii businesses have a highly skilled, local talent pipeline [6350; pc] | $60,000 |
| Hawaii Workforce Pipeline | To forge stronger connections between windward employers and public school students in the region. [6282; pc] | $55,340 |
| Collaborative Support Services | General operating support for the commit to keiki initiative to educate candidates and elected officials about the importance of investing in early childhood development [6377; pc] | $50,000 |
| Collaborative Support Services | Building a community-based early childhood continuum in the waimnalo community of oahu [5605; pc] | $50,000 |
| Hawaii Chamber of Commerce Foundation | Unsolicited challenge grant to hawaii chamber of commerce foundation to support business relief fund to help businesses affected by the maui wildfires [5953; pc] | $50,000 |
| Hawaii Community Foundation (HCF) | Support to ensure appropriate administration of the maui strong fund's current and expected grant expenditures totaling $192.6 million in a way that optimizes impact and transparency in the four phases of disaster, aligned with donor intent. [6262; pc] | $50,000 |
| Hawaii Executive Collaborative | Support for the rediscovering hawaii's soul initiative to create spaces where leaders from all sectors could have candid, difficult discussions to work together to take action that will create a better future for hawaii [5914; pc] | $50,000 |
| Hui Malama O Ke Kai Foundation | E hoakoakoa: a community & educational space [5166; pc] | $50,000 |
| Leadership Instituue Hawaii Department of Education | Laying the foundation for middle level education magic:strengthening public middle schools in hawaii [5920; gov] | $50,000 |
| Manoa Heritage Center | Sam cooke endowed fund [4463; pc] | $50,000 |
| Risehi Foundation | To support middle school youth in their development and career exploration. [6278; pc] | $50,000 |
| The Coral Reef Alliance | To work with a coalition of partners to catalyze cesspool conversions at a meaningful scale sufficient to meet the states 2050 goal for 100% conversion. [6122; pc] | $50,000 |
| The Nature Conservancy of Hawaii | To continue their decades-long work with communities and the state on maui and hawaii island, as well as initiating new work on kauai [6329; pc] | $50,000 |
Officers and trustees
- Henry M D'olier
- Dr Claire L Asam
- Dr Kittredge A Baldwin
- Corbett Ak Kalama
- Dee Jay A Mailer
- James H McIntosh
- Jennifer G Sabas
- T Aulani Wilhelm
- Eric K Yeaman
- Carlton KC Au
- Dennis Eric Co
- Terrence R George
- Alexander Harris
- Ann S Matsukado
- Susan L Sumida
Questions people ask
Does Harold KL Castle Foundation accept grant applications?
Yes. Its latest IRS filing says it accepts applications.
How much does Harold KL Castle Foundation give?
$6.7 million in tax year 2024, across 106 grants, with a typical grant of $25,000.
Who runs Harold KL Castle Foundation?
Its 2024 filing lists Henry M D'olier (Director/Chairman), Dr Claire L Asam (Director), Dr Kittredge A Baldwin (Director) and Corbett Ak Kalama (Director) among 15 officers and trustees.
What does Harold KL Castle Foundation fund?
Based on its grants, mainly education, environment and conservation and community development.