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Funding for projects aligned with the foundation's core strategic areas: Public Education Redesign and Enhancement, Nearshore Marine Resource Conservation, Climate Resiliency, and Strengthening Windward Oʻahu Communities. Applicants must begin with an Online Inquiry Form, and first-time applicants are required to call the foundation to discuss their project before submitting.
Supports youth-focused programs in Windward Oʻahu. Grant amounts are typically determined based on youth volunteer hours and community involvement.
A participatory grantmaking fund that supports community-led projects intended to build resilience and strengthen connections between people and place in the Koʻolau region. It prioritizes projects related to food security, health and wellbeing, and community-based education.
Harold K L Castle Foundation is a private corporation based in KAILUA, HI. The foundation received its IRS ruling in 1964. It holds total assets of $171.3M. Annual income is reported at $37.3M. Total assets have grown from $108.9M in 2011 to $171.3M in 2024. The foundation is governed by 15 officers and trustees. Tax records are available from 2020 to 2024. Grantmaking is concentrated in Hawaii. According to available records, Harold K L Castle Foundation has made 483 grants totaling $38.1M, with a median grant of $50K. The foundation has distributed between $7.2M and $15.9M annually from 2020 to 2023. Grantmaking activity was highest in 2022 with $15.9M distributed across 160 grants. Individual grants have ranged from $150 to $700K, with an average award of $81K. The foundation has supported 181 unique organizations. The foundation primarily supports organizations in Hawaii, California, District of Columbia, which account for 96% of all grants. Grantmaking reaches organizations across 9 states. Contributions to this foundation are tax-deductible.
Smallest Grant
$250
Median Grant
$45K
Average Grant
$73K
Largest Grant
$529K
Based on 100 grants from the most recent 990-PF filing.
No program descriptions are available for this foundation. Many private foundations report program activities in their annual 990-PF filings — check the Tax Filings section below for the most recent filing.
Harold K L Castle Foundation is a private foundation that provides grants to eligible organizations. Based on available records, the foundation has funded 483 grants. Its grantmaking reaches organizations primarily in HI, CA, DC.
Harold K L Castle Foundation has distributed a total of $38.1M across 483 grants. The median grant size is $50K, with an average of $81K. Individual grants have ranged from $150 to $700K.
The application deadline is SEE STATEMENT 16 - ATTACHMENT. See statement 16 - attachment.
Harold K L Castle Foundation is headquartered in KAILUA, HI. While based in HI, the foundation distributes grants to organizations across 9 states.
| Name | Title | Compensation | Benefits | Total |
|---|---|---|---|---|
| Terrence R George | PRESIDENT/CEO | $391K | $69K | $460K |
| Alexander Harris | VICE PRESIDENT OF PROGRAMS | $231K | $38K | $269K |
| Dennis Eric Co | VICE PRESIDENT OF RESILIENCY | $214K | $53K | $266K |
| Carlton Kc Au | VICE PRESIDENT OF FINANCE | $114K | $17K | $131K |
| Ann S Matsukado | TREASURER | $98K | $34K | $132K |
| Susan L Sumida | SECRETARY | $57K | $9K | $67K |
| Henry M D'Olier | DIRECTOR/CHAIRMAN | $0 | $0 | N/A |
| James H Mcintosh | DIRECTOR | $0 | $0 | N/A |
| Corbett Ak Kalama | DIRECTOR | $0 | $0 | N/A |
| Dr Kittredge A Baldwin | DIRECTOR | $0 | $0 | N/A |
| Dr Claire L Asam | DIRECTOR | $0 | $0 | N/A |
| T Aulani Wilhelm | DIRECTOR | $0 | $0 | N/A |
| Jennifer G Sabas | DIRECTOR | $0 | $0 | N/A |
| Eric K Yeaman | DIRECTOR | $0 | $0 | N/A |
| Dee Jay A Mailer | DIRECTOR | $0 | $0 | N/A |
Total Giving
N/A
Total Assets
$171.3M
Fair Market Value
N/A
Net Worth
$171M
Grants Paid
N/A
Contributions
N/A
Net Investment Income
N/A
Distribution Amount
N/A
Total Grants
483
Total Giving
$38.1M
Average Grant
$81K
Median Grant
$50K
Unique Recipients
181
Most Common Grant
$25K
of 2023 grantees were first-time recipients
| Recipient | Location | Amount | Year |
|---|---|---|---|
| University Of VirginiaPROVIDE THE GOOD JOBS HAWAII PROJECT TEAM WITH A LEARNING AND EVALUATION PARTNER THAT CAN OFFER ACTIONABLE INSIGHTS AND ONGOING ANALYSIS OF HOW THE INITIATIVE IS HELPING TO PREPARE AND PLACE LOCAL RESIDENTS INTO HIGH-DEMAND, WELL-PAYING JOBS [5863; PC] | Charlottesville, VA | $112K | 2023 |
| Associated Builders & Contractors Inc"BUILDING HAWAII TOGETHER" SKILLED TRADES PROJECT TO INCREASE PARTICIPATION IN CARPENTRY, PLUMBING, ELECTRICAL, PAINTING AND ROOFING [5984; PC] | Honolulu, HI | $60K | 2023 |
| University Of Hawaii FoundationSOAR HIGHER - SUPPORT FOR WINDWARD OAHU SCHOOLS TO PARTICIPATE AS A GEAR UP 6-16 MODEL [5173; PC] | Honolulu, HI | $529K | 2023 |
| 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 HAWAI'I THROUGH A SUITE OF EFFORTS BUILT ON FOUR PILLARS: PLACE-BASED PLANNING, PONO PRACTICES, MONITORING, AND PROTECTION & RESTORATION [5905; PC] | Honolulu, HI | $500K | 2023 |
| The Nature Conservancy Of HawaiiADVANCING COMMUNITY-BASED MARINE MANAGEMENT TO REACH 30X30 GOALS [5660; PC] | Honolulu, HI | $280K | 2023 |
| HookuaainaTO PROCEED WITH A FIFTH AHUPUA'A SYSTEMS APPRENTICESHIP COHORT IN PARTNERSHIP WITH WINDWARD COMMUNITY COLLEGE, WHICH WILL ALSO INCLUDE EXPANSION TO THREE OTHER WINDWARD O'AHU 'AINA-BASED EDUCATION SITES [5912; PC] | Kailua, HI | $200K | 2023 |
| Historic Hawaii FoundationSUPPORT TO STABILIZE WALLS OF HISTORIC BUILDINGS THAT BURNED IN LAHAINA, IN PARTNERSHIP WITH THE LAHAINA RESTORATION FOUNDATION, AND SUPPORT FOR PLANNING, ARCHITECTURAL, ENGINEERING, AND PERMITTING FOR REHABILITATION AND RESTORATION OF HISTORIC SITES IN LAHAINA [6090; PC] | Honolulu, HI | $175K | 2023 |
| Polynesian Voyaging SocietyCHALLENGE GRANT TO STRENGTHEN THE POLYNESIAN VOYAGING SOCIETY'S CAPACITY TO LEAD A MOVEMENT OF SUSTAINABILITY BASED ON REVIVED INDIGENOUS WISDOM AND TO SUPPORT THE MOANANUIAKEA VOYAGE THROUGHOUT THE PACIFIC [5535; PC] | Honolulu, HI | $160K | 2023 |
| Social Finance IncPROPOSAL TO SERVE AS HAWAI'I RENEWABLE LEARNING FUND MANAGER [6086; PC] | Boston, MA | $150K | 2023 |
| 50canCORE ORGANIZATIONAL SUPPORT FOR HAWAIIKIDSCAN, AN EDUCATION ADVOCACY ORGANIZATION COMMITTED TO ENSURE THAT HAWAII HAS AN EXCELLENT AND EQUITABLE EDUCATION SYSTEM [5898; PC] | Washington, DC | $150K | 2023 |
| Castle Medical CenterSTARTUP SUPPORT TO ESTABLISH A COMMUNITY-BASED WORKFORCE DEVELOPMENT PROGRAM TO HELP KO'OLAUPOKO AND KO'OLAULOA RESIDENTS DEVELOP THE EMPLOYABILITY AND TECHNICAL SKILLS NECESSARY TO SECURE HIGHER-WAGE JOBS [5843; PC] | Kailua, HI | $140K | 2023 |
| Lanakila PacificLANAKILA PACIFIC CAREER PATH PROGRAM, A NEW FORM OF WORK-BASED LEARNING SUPPORT FOR YOUNG PEOPLE WITH MILD TO MODERATE AUTISM [5677; PC] | Honolulu, HI | $133K | 2023 |
| Pilina Education AllianceSUPPORT OF PATHWAY TO PURPOSE, A CAREER-BASED HIGH SCHOOL PROGRAM THAT PROVIDES GUIDANCE, MENTORSHIP AND WORK-BASED LEARNING OPPORTUNITIES FOR STUDENTS. [5658; NC] | Honolulu, HI | $125K | 2023 |
| Kualoa-Heeia Ecumenical Youth Project (Key)TO ESTABLISH A COMMUNITY-BASED WORKFORCE DEVELOPMENT PROGRAM TO HELP KO'OLAUPOKO AND KO'OLAULOA RESIDENTS DEVELOP THE EMPLOYABILITY AND TECHNICAL SKILLS AND TRAINING NECESSARY TO SECURE HIGHER-WAGE JOBS [5848; PC] | Kaneohe, HI | $115K | 2023 |
| Purple MaiaTO SUPPORT THE LAUNCH OF WINDWARD COMMUNITY COLLEGE'S HALAU HEKILI, AN ALTERNATE LEARNING SPACE FOR HIGH SCHOOL STUDENTS ATTENDING KAILUA HIGH THAT CONNECTS HIGH SCHOOL, COLLEGE AND COMMUNITY LEARNING EXPERIENCES [5787; PC] | Honolulu, HI | $111K | 2023 |
| Maui United WayUNSOLICITED FLEXIBLE GRANT TO MAUI UNITED WAY TO BUILD THEIR CAPACITY TO HELP PROVIDE RELIEF TO THOSE DIRECTLY IMPACTED BY THE WILDFIRES ON MAUI, TO SUPPORT COMMUNITY ORGANIZATIONS PROVIDING THAT RELIEF, AND TO HELP IN THE RECOVERY AND REBUILDING PHASES [5951; PC] | Wailuku, HI | $100K | 2023 |
| 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] | Kaneohe, HI | $100K | 2023 |
| The Trust For Public LandTO HELP TRUST FOR PUBLIC LAND (TPL) AND ITS PARTNER, THE HAWAI'I LAND TRUST (HILT) CONTINUE THEIR EFFORTS TO SECURE PRIORITY LANDS IN WINDWARD O'AHU FOR COMMUNITY USE AND BENEFIT [5851; PC] | Honolulu, HI | $100K | 2023 |
| City And County Of Honolulu Office Of Climate Change Sustainability And ResTO HELP THE HONOLULU CITY & COUNTY OPTIMIZE ITS CLIMATE ADAPTATION WORK ALIGNED WITH THE FOUNDATION'S NEW CLIMATE STRATEGY [5860; GOV] | Honolulu, HI | $100K | 2023 |
| Conservation International FoundationPU'ULAU 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] | Honolulu, HI | $95K | 2023 |
| Leadership Instituue Hawaii Department Of EducationLAYING THE FOUNDATION FOR MIDDLE LEVEL EDUCATION MAGIC: STRENGTHENING PUBLIC MIDDLE SCHOOLS IN HAWAII [5920; PC] | Aiea, HI | $80K | 2023 |
| College Summit Inc Dba PeerforwardPEERS LEADING PEERS THROUGH HIGHER EDUCATION [5516; PC] | Washington, DC | $80K | 2023 |
| Paepae O HeeiaSTRENGTHENING THE KO'OLAU 'AINA ALOHA NETWORK THROUGH SHARED VISION AND EFFORTS [5517; PC] | Kaneohe, HI | $75K | 2023 |
| Koolau FoundationCATALYST FUNDING TO DEVELOP THE HAIKU VALLEY CULTURAL PRESERVE [5907; PC] | Kaneohe, HI | $75K | 2023 |
| Connected The National Center For College And CareerPROVIDE SUPPORT TO CONNECTED: THE NATIONAL CENTER FOR COLLEGE AND CAREERS TO DESIGN, TEST AND LAUNCH THE FIRST PHASE OF A COMMUNITY OF PRACTICE FOR SMALL HIGH SCHOOLS IN RURAL AND REMOTE REGIONS OF HAWAII [5927; PC] | Berkeley, CA | $75K | 2023 |
| Resources Legacy FundSTRENGTHENING HOLOMUA: MARINE 30X30 [5521; PC] | Sacramento, CA | $75K | 2023 |
| Elemental ExceleratorCOMMUNITY-DRIVEN CLIMATE TECHNOLOGY DEPLOYMENT IN HAWAII: MORE CLOSELY CONNECTING EMERGING CLIMATE-RESILIENCE TECHNOLOGIES INCUBATED BY ELEMENTAL EXCELERATOR WITH THE ON-THE-GROUND NEEDS OF LOCAL COMMUNITY GROUPS AND ENVIRONMENTAL NONPROFITS [5650; PC] | Honolulu, HI | $70K | 2023 |
| Makaha Cultural Learning CenterTO EXPAND PV INSTALLATION TRAINING THROUGH STRIVE (SUSTAINABILITY THROUGH RENEWABLE IMPACT-DRIVEN VOCATIONAL EDUCATION) [5968; PC] | Waianae, HI | $60K | 2023 |
| Hawaii Electricians Training FundINTERIM CREDENTIAL PRE-APPRENTICESHIP PROGRAM & RECRUITMENT EXPANSION [6065; NC] | Honolulu, HI | $60K | 2023 |
| Pbl WorksSCALING HIGH QUALITY PBL IN HAWAII - EXPANDING AND DEEPENING LEADERSHIP TRAINING IN COHORTS 4 AND 5 [5294; PC] | Novato, CA | $57K | 2023 |
| Residential Youth Services & EmpowermentTO SUPPORT THEIR DROP-IN SHELTER AND SERVICES FOR YOUTH AGES 14-24 [5637; PC] | Kailua, HI | $55K | 2023 |
| Kulia Education FoundationSUPPORT FOR THE MARKETING FOR AND HIRING OF KEY STAFF FOR THE NEWLY AUTHORIZED KULIA ACADEMY PUBLIC CHARTER SCHOOL IN KALIHI FOCUSING ON IT SKILLS AND PROJECT-BASED LEARNING [5602; NC] | Honolulu, HI | $50K | 2023 |
| Hawaii People'S FundUNSOLICITED FLEXIBLE GRANT TO HAWAII PEOPLE'S FUND TO BUILD THEIR CAPACITY TO HELP PROVIDE RELIEF TO THOSE DIRECTLY IMPACTED BY THE WILDFIRES ON MAUI AND TO AMPLIFY THEIR VOICE IN DECISION MAKING THROUGH THE "MAUI ALOHA: THE PEOPLE'S RESPONSE" INITIATIVE [5947; PC] | Honolulu, HI | $50K | 2023 |
| Hawaii Executive CollaborateSUPPORT FOR THE REDISCOVERING HAWAI'I'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 HAWAI'I [5914; PC] | Honolulu, HI | $50K | 2023 |
| Hui O Waa KauluaUNSOLICITED FLEXIBLE GRANT TO HUI O WA'A KAULUA TO BUILD CAPACITY TO HELP PROVIDE RELIEF TO THOSE DIRECTLY IMPACTED BY THE WILDFIRES ON MAUI AND ALSO TO HELP REPLACE HUI O WA'A KAULUA'S CANOES LOST IN THE WILDFIRES [5950; PC] | Kahului, HI | $50K | 2023 |
| Center For Disaster Philanthropy IncUNSOLICITED GRANT TO CENTER FOR DISASTER PHILANTHROPY TO SUPPORT THE HAWAII WILDFIRES RECOVERY FUND [5946; PC] | Washington, DC | $50K | 2023 |
| Malama Honua Public Charter School FoundationSUPPORT FOR MALAMA HONUA PUBLIC CHARTER SCHOOL FOUNDATION TO COMPLETE PRE-CONSTRUCTION PREPARATIONS ON ITS 11-ACRE SITE IN WAIMANALO FOR A NEW LEARNING CAMPUS. [5925; PC] | Waimanalo, HI | $50K | 2023 |
| Teach For America (Tfa)SUPPORT TO SUSTAIN TEACH FOR AMERICA-HAWAI'I'S WORK TO CLOSE THE ACHIEVEMENT GAP [4585; PC] | Honolulu, HI | $50K | 2023 |