Harold Kl Castle Foundation
Kailua, HI · EIN 99-6005445. Reported 394 grants totalling $29.7M to 189 recipients across tax years 2021-2024. This foundation did not tell the IRS it funds only preselected organizations.
Does this foundation accept applications?
Yes -- on its own tax return. Form 990-PF asks every private foundation whether it makes grants only to organizations it selects itself. Of the 91,758 foundations in our data that made a grant and answered, 78% said yes -- and applying to those is wasted effort. Harold Kl Castle Foundation did not check that box on its most recent filing, which puts it in the minority that is at least open to being approached.
How big are its grants?
The median grant is $45,000. Half of everything it gave fell between $20,000 and $85,000; the smallest was $150 and the largest $700,000. If you are asking for materially more than the top of that range, you are asking the wrong foundation.
Every organization it funded
This is the complete list from its filings, largest first. Recipients are grouped by name and state as they were written on the returns, so an organization entered under two different names appears twice. Years funded is the number of separate tax years in which that name received money.
| Organization | Location | Total received | Grants | Years funded | Last |
|---|---|---|---|---|---|
| University of Hawaii Foundation | Honolulu, HI | $6,547,258 | 46 | 4 | 2024 |
| Hawaii Community Foundation (hcf) | Honolulu, HI | $4,235,000 | 17 | 4 | 2024 |
| The Nature Conservancy of Hawaii | Honolulu, HI | $1,410,000 | 5 | 4 | 2024 |
| Kuaaina Ulu Auamo (kua) | Kaneohe, HI | $1,367,500 | 4 | 4 | 2024 |
| Social Finance Inc | Boston, CA | $550,000 | 1 | 1 | 2024 |
| Resources Legacy Fund | Sacramento, CA | $537,000 | 9 | 4 | 2024 |
| 50CAN | Washington, DC | $517,500 | 6 | 4 | 2024 |
| Pilina Education Alliance | Honolulu, HI | $450,000 | 4 | 3 | 2023 |
| Kualoa-Heeia Ecumenical Youth Project (key) | Kaneohe, HI | $425,000 | 4 | 4 | 2024 |
| Center for Tomorrow's Leaders | Honolulu, HI | $335,000 | 3 | 3 | 2024 |
| Hawaii Conservation Alliance Foundation | Honolulu, HI | $332,715 | 2 | 2 | 2024 |
| College Summit Inc Dba Peerforward | Washington, DC | $326,663 | 4 | 3 | 2024 |
| Windward School District | Kaneohe, HI | $317,500 | 5 | 4 | 2024 |
| Teach for America (tfa) | Honolulu, HI | $310,000 | 4 | 3 | 2023 |
| The Trust for Public Land | Honolulu, HI | $300,000 | 2 | 2 | 2023 |
| Hui O Hauula | Hauula, HI | $295,980 | 2 | 2 | 2022 |
| Polynesian Voyaging Society | Honolulu, HI | $285,771 | 5 | 3 | 2023 |
| Waimanalo Health Center | Waimanalo, HI | $268,916 | 3 | 2 | 2022 |
| Hookuaaina | Kailua, HI | $265,176 | 2 | 2 | 2023 |
| Castle Medical Center | Kailua, HI | $265,000 | 2 | 2 | 2023 |
| The Chamber of Commerce of Hawaii | Honolulu, HI | $260,000 | 4 | 4 | 2024 |
| Purple Maia | Honolulu, HI | $255,968 | 2 | 2 | 2024 |
| Hawaii Alliance of Nonprofit Organizations | Honolulu, HI | $240,000 | 4 | 4 | 2024 |
| Kai Loa Inc | Kaneohe, HI | $220,000 | 2 | 1 | 2022 |
| Hawaii Workforce Pipeline | Kailua, HI | $212,249 | 3 | 3 | 2024 |
| Hawaiian Island Land Trust (hilt) | Honolulu, HI | $200,000 | 2 | 2 | 2022 |
| Paepae O Heeia | Kaneohe, HI | $200,000 | 3 | 3 | 2024 |
| Pbl Works | Novato, CA | $192,102 | 3 | 3 | 2023 |
| Conservation International Foundation | Honolulu, HI | $190,000 | 2 | 2 | 2024 |
| Historic Hawaii Foundation | Honolulu, HI | $175,000 | 1 | 1 | 2023 |
| Manoa Heritage Center | Honolulu, HI | $175,000 | 2 | 2 | 2024 |
| Hui Malama O Ke Kai Foundation | Waimanalo, HI | $174,980 | 3 | 3 | 2024 |
| Kanehunamoku Voyaging Academy | Kaneohe, HI | $173,460 | 1 | 1 | 2021 |
| Hawaiian Community Assets Inc | Honolulu, HI | $171,500 | 2 | 1 | 2021 |
| Collaborative Support Services (css) | Honolulu, HI | $170,000 | 3 | 2 | 2022 |
| Hawaii Hospital Education and Research Foundation (hherf) | Honolulu, HI | $150,000 | 1 | 1 | 2024 |
| Koolau Foundation | Kaneohe, HI | $150,000 | 2 | 2 | 2024 |
| New Teacher Center | Santa Cruz, CA | $150,000 | 3 | 3 | 2024 |
| Partners in Care - Oahu's Continuum of Care | Honolulu, HI | $150,000 | 2 | 2 | 2022 |
| Social Finance Inc | Boston, MA | $150,000 | 1 | 1 | 2023 |
| Lanakila Pacific | Honolulu, HI | $145,583 | 2 | 2 | 2023 |
| Hi Fusioned (isis Hawaii) | Honolulu, HI | $130,000 | 4 | 4 | 2024 |
| Leadership Instituue Hawaii Department of Education | Aiea, HI | $130,000 | 2 | 2 | 2024 |
| Malama Honua Public Charter School Foundation | Waimanalo, HI | $128,375 | 6 | 4 | 2024 |
| Elemental Excelerator | Honolulu, HI | $127,720 | 2 | 2 | 2023 |
| Council for Native Hawaiian Advancement | Honolulu, HI | $125,000 | 3 | 3 | 2023 |
| Institute for Human Services Inc | Honolulu, HI | $123,002 | 1 | 1 | 2021 |
| Kupu | Honolulu, HI | $120,000 | 1 | 1 | 2022 |
| The American Ai Forum Aka Ai Education Project | San Francisco, CA | $115,000 | 1 | 1 | 2024 |
| University of Virginia | Charlottesville, VA | $111,814 | 1 | 1 | 2023 |
| Hawaii Chamber of Commerce Foundation | Honolulu, HI | $110,000 | 2 | 1 | 2024 |
| Kauluakalana | Kailua, HI | $105,000 | 2 | 2 | 2022 |
| C&c of Honolulu Office of Climate Change Sustainability and Resiliency | Honolulu, HI | $100,000 | 1 | 1 | 2024 |
| City and County of Honolulu Office of Climate Change Sustainability and Res | Honolulu, HI | $100,000 | 1 | 1 | 2023 |
| Collaborative Support Services | Honolulu, HI | $100,000 | 2 | 1 | 2024 |
| Hawaii Electricians Training Fund | Honolulu, HI | $100,000 | 2 | 2 | 2024 |
| Hawaiian Islands Land Trust (hilt) | Honolulu, HI | $100,000 | 1 | 1 | 2024 |
| Kanu Hawaii | Honolulu, HI | $100,000 | 3 | 3 | 2024 |
| Maui United Way | Wailuku, HI | $100,000 | 1 | 1 | 2023 |
| The Mediation Center of the Pacific Inc | Honolulu, HI | $100,000 | 1 | 1 | 2021 |
| The Pacific American Foundation (paf) | Kaneohe, HI | $100,000 | 2 | 1 | 2024 |
| Wastewater Alternative and Innovations | Honolulu, HI | $100,000 | 2 | 2 | 2022 |
| Wastewater Alternatives and Innovations | Honolulu, HI | $100,000 | 2 | 2 | 2024 |
| Boys & Girls Club of Hawaii | Honolulu, HI | $95,000 | 4 | 3 | 2024 |
| Legal Aid Society | Honolulu, HI | $95,000 | 1 | 1 | 2021 |
| Malama Learning Center Corp | Honolulu, HI | $91,500 | 3 | 2 | 2024 |
| Asu Foundation | Tempe, AZ | $87,217 | 2 | 2 | 2022 |
| Bobby Benson Center | Kahuku, HI | $85,000 | 1 | 1 | 2022 |
| Residential Youth Services & Empowerment | Kailua, HI | $85,000 | 3 | 3 | 2024 |
| Adult Friends for Youth | Honolulu, HI | $82,000 | 3 | 3 | 2023 |
| Project Vision Hawaii | Honolulu, HI | $80,000 | 2 | 2 | 2024 |
| Connected the National Center for College and Career | Berkeley, CA | $75,000 | 1 | 1 | 2023 |
| Conservation International | Arlington, VA | $75,000 | 1 | 1 | 2021 |
| Hawaii Executive Collaborative | Honolulu, HI | $75,000 | 2 | 1 | 2024 |
| Hawaii State Board of Education | Honolulu, HI | $75,000 | 2 | 2 | 2022 |
| Na Maka Onaona | Kilauea, HI | $75,000 | 2 | 2 | 2023 |
| State Higher Education Executive Officers Association | Boulder, CO | $75,000 | 2 | 2 | 2022 |
| Hawaii Literacy Inc | Honolulu, HI | $74,022 | 1 | 1 | 2021 |
| Hawaii Executive Collaborate | Honolulu, HI | $70,000 | 3 | 2 | 2023 |
| Healthy Climate Communities | Kailua, HI | $70,000 | 3 | 3 | 2024 |
| Alternative Structures International | Waianae, HI | $68,000 | 1 | 1 | 2021 |
| Public Schools Hawaii Foundation | Honolulu, HI | $67,500 | 1 | 1 | 2024 |
| Hawaii Department of Education Kailua Kalaheo Complex Area | Kaneohe, HI | $67,030 | 3 | 3 | 2023 |
| Hawaii LOCAL2030 Hub | Honolulu, HI | $65,000 | 2 | 2 | 2024 |
| Hui Mahiai Aina | Waimanalo, HI | $63,000 | 1 | 1 | 2022 |
| Associated Builders & Contractors Inc | Honolulu, HI | $60,000 | 1 | 1 | 2023 |
| Makaha Cultural Learning Center | Waianae, HI | $60,000 | 1 | 1 | 2023 |
| Palama Settlement | Honolulu, HI | $60,000 | 2 | 2 | 2023 |
| Blue Planet Foundation | Honolulu, HI | $50,000 | 2 | 2 | 2022 |
| California Fire Foundation | Sacramento, CA | $50,000 | 1 | 1 | 2023 |
| Center for Disaster Philanthropy Inc | Washington, DC | $50,000 | 1 | 1 | 2023 |
| Hawaii Afterschool Alliance | Honolulu, HI | $50,000 | 2 | 2 | 2024 |
| Hawaii Appleseed Center for Law & Economic Justice | Honolulu, HI | $50,000 | 1 | 1 | 2022 |
| Hawaii Homeless Healthcare Hui (H4) | Honolulu, HI | $50,000 | 1 | 1 | 2021 |
| Hawaii People's Fund | Honolulu, HI | $50,000 | 1 | 1 | 2023 |
| Ho'ala 'aina Kupono | Kaaawa, HI | $50,000 | 2 | 2 | 2023 |
| Hui O Waa Kaulua | Kahului, HI | $50,000 | 1 | 1 | 2023 |
| Iolani School Ka'i Program | Honolulu, HI | $50,000 | 2 | 2 | 2024 |
| Khm International | Kaunakakai, HI | $50,000 | 2 | 2 | 2024 |
| Kulia Education Foundation | Honolulu, HI | $50,000 | 1 | 1 | 2023 |
| Risehi Foundation | Kailua, HI | $50,000 | 1 | 1 | 2024 |
| The Coral Reef Alliance | San Francisco, CA | $50,000 | 1 | 1 | 2024 |
| Vision to Learn | Los Angeles, CA | $50,000 | 1 | 1 | 2022 |
| Hawaii Technology Academy | Waipahu, HI | $45,000 | 1 | 1 | 2021 |
| Kawaiahao Church | Honolulu, HI | $40,000 | 1 | 1 | 2021 |
| Molokai High and Intermediate School | Hoolehua, HI | $40,000 | 2 | 2 | 2024 |
| River of Life Mission | Honolulu, HI | $40,000 | 1 | 1 | 2024 |
| Vibrant Hawaii | Hilo, HI | $40,000 | 1 | 1 | 2024 |
| James B Castle High School | Kaneohe, HI | $37,932 | 2 | 2 | 2024 |
| Malama Maunalua | Honolulu, HI | $37,550 | 3 | 3 | 2024 |
| Hui O Ko'olaupoko | Kailua, HI | $37,500 | 1 | 1 | 2024 |
| Kealakehe High School | Kailua Kona, HI | $37,500 | 2 | 2 | 2024 |
| Seeqs Foundation | Honolulu, HI | $37,500 | 2 | 2 | 2024 |
| Kalaheo High School | Kailua, HI | $32,420 | 5 | 3 | 2024 |
| Department of Education Windward District | Kaneohe, HI | $30,000 | 2 | 2 | 2024 |
| Hawaii Department of Education Ocid-Extended Learning Branch | Honolulu, HI | $30,000 | 1 | 1 | 2024 |
| Boys to Men Mentoring Network of Hawaii Incorporated | Kamuela, HI | $25,000 | 2 | 2 | 2024 |
| College Promise | Washington, DC | $25,000 | 1 | 1 | 2024 |
| Hale Makua Health Services | Kahului, HI | $25,000 | 1 | 1 | 2021 |
| Hawaii Workforce Funders Collaborative | Kapaau, HI | $25,000 | 1 | 1 | 2024 |
| Imabrightkid Foundation | Kaneohe, HI | $25,000 | 1 | 1 | 2022 |
| Kalanihale | Captain Cook, HI | $25,000 | 1 | 1 | 2021 |
| Kmr Complex Area | Honolulu, HI | $25,000 | 1 | 1 | 2022 |
| Kohala High School | Kapaau, HI | $25,000 | 2 | 2 | 2024 |
| Marimed Foundation | Kaneohe, HI | $25,000 | 1 | 1 | 2021 |
| Oahu Resource Conservation and Development Council | Kunia, HI | $25,000 | 1 | 1 | 2024 |
| Sustainable Coastlines Hawaii | Honolulu, HI | $25,000 | 1 | 1 | 2024 |
| Waiahole Elementary School | Kaneohe, HI | $25,000 | 1 | 1 | 2021 |
| YMCA - Windward Branch | Honolulu, HI | $25,000 | 1 | 1 | 2021 |
| Bishop Museum | Honolulu, HI | $24,998 | 1 | 1 | 2023 |
| Kanoelani Elementary School | Waipahu, HI | $24,955 | 1 | 1 | 2021 |
| Kailua Intermediate School | Kailua, HI | $23,319 | 1 | 1 | 2021 |
| Aikahi Elementary School | Kailua, HI | $22,500 | 1 | 1 | 2021 |
| Isg Samuel Solomon | Wahiawa, HI | $22,500 | 1 | 1 | 2021 |
| Kamaile Public Charter School | Waianae, HI | $22,500 | 1 | 1 | 2021 |
| Nanaikapono Elementary School | Waianae, HI | $22,500 | 1 | 1 | 2021 |
| Department of Education Leeward District | Kapolei, HI | $21,600 | 1 | 1 | 2023 |
| Kahului Elementary School | Kahului, HI | $20,800 | 1 | 1 | 2021 |
| Hawaii Data Collaborative | Honolulu, HI | $20,000 | 1 | 1 | 2021 |
| Hawaii Symphony Orchestra | Honolulu, HI | $20,000 | 1 | 1 | 2023 |
| Ho'ala Foundation for Education | Honolulu, HI | $20,000 | 1 | 1 | 2021 |
| Kauai Economic Development Board | Lihue, HI | $20,000 | 2 | 2 | 2024 |
| Kipahulu Ohana Inc | Hana, HI | $20,000 | 1 | 1 | 2021 |
| Nurture Cultivate Inc | Honolulu, HI | $20,000 | 2 | 2 | 2024 |
| Waimanalo Canoe Club | Waimanalo, HI | $20,000 | 1 | 1 | 2023 |
| Kapolei High School | Kapolei, HI | $18,833 | 2 | 2 | 2024 |
| Oahu Economic Development Board | Honolulu, HI | $16,000 | 1 | 1 | 2021 |
| Daniel K Inouye Elementary School | Wahiawa, HI | $15,800 | 1 | 1 | 2021 |
| Hilo High School | Hilo, HI | $15,000 | 1 | 1 | 2024 |
| Kailua High School | Kailua, HI | $15,000 | 1 | 1 | 2024 |
| Marshallese Community Organization of Hawaii | Honolulu, HI | $15,000 | 1 | 1 | 2021 |
| Waikea High School | Hilo, HI | $15,000 | 1 | 1 | 2024 |
| Hawaii Association of Independent Schools | Honolulu, HI | $10,000 | 1 | 1 | 2024 |
| Ho'iwai Fund | Honolulu, HI | $10,000 | 1 | 1 | 2021 |
| Inside the Middle East Inc | Baltimore, MD | $10,000 | 1 | 1 | 2022 |
| Science Camps of America | Kaneohe, HI | $10,000 | 1 | 1 | 2021 |
| Windward Dog Park Hui | Kaneohe, HI | $10,000 | 1 | 1 | 2023 |
| Inspire International | Waipahu, HI | $7,500 | 3 | 3 | 2024 |
| Ka'u High and Pahala Elementary School | Pahala, HI | $7,500 | 1 | 1 | 2024 |
| Kula Elementary School PTA | Kula, HI | $7,500 | 1 | 1 | 2024 |
| Moanalua Middle School | Honolulu, HI | $7,500 | 1 | 1 | 2024 |
| Pahoa High & Intermediate School | Pahoa, HI | $7,500 | 1 | 1 | 2024 |
| West Hawaii Complex Area | Kailua Kona, HI | $7,500 | 1 | 1 | 2024 |
| Kapili Like Hawaii | Waimanalo, HI | $7,000 | 1 | 1 | 2021 |
| BOTTLES4COLLEGE | Hauula, HI | $5,000 | 1 | 1 | 2024 |
| Hau'ula Elementary | Hauula, HI | $5,000 | 1 | 1 | 2023 |
| James B Castle High School for Castle Performing Arts Center | Kaneohe, HI | $5,000 | 1 | 1 | 2024 |
| Kahaluu Elementary School | Kaneohe, HI | $5,000 | 1 | 1 | 2023 |
| Kailua Historical Society | Kailua, HI | $5,000 | 1 | 1 | 2024 |
| Kalaheo High School Ptsa | Kailua, HI | $5,000 | 1 | 1 | 2022 |
| Public Schools of Hawaii Foundation | Honolulu, HI | $5,000 | 1 | 1 | 2021 |
| St Marks Lutheran Church and School | Kaneohe, HI | $5,000 | 1 | 1 | 2023 |
| The Shelter | Kaneohe, HI | $5,000 | 1 | 1 | 2022 |
| Friends and Families of Castle (class of 2023 Project Grad) | Kaneohe, HI | $4,490 | 1 | 1 | 2023 |
| Boys Scouts of America Troop 329 | Honolulu, HI | $4,166 | 1 | 1 | 2022 |
| Lutheran Church Missouri Synod | Kaneohe, HI | $1,800 | 1 | 1 | 2024 |
| After-School All-Stars Hawaii | Honolulu, HI | $1,000 | 2 | 2 | 2024 |
| Friends of Kailua High School | Hauula, HI | $850 | 1 | 1 | 2023 |
| Save the Waves Coalition | Santa Cruz, CA | $519 | 1 | 1 | 2023 |
| Honolulu Sertoma Club | Honolulu, HI | $500 | 1 | 1 | 2023 |
| Akuala School | Honolulu, HI | $250 | 1 | 1 | 2022 |
| Save the Wavves Coalition | Santa Cruz, CA | $250 | 1 | 1 | 2021 |
| Sustainable Molokai | Kaunakakai, HI | $250 | 1 | 1 | 2021 |
| Armed Services YMCA of the USA - Honolulu | Pearl Harbor, HI | $150 | 1 | 1 | 2023 |
| Family Programs of Hawaii | Honolulu, HI | $150 | 1 | 1 | 2023 |
| Ho'ola Na Pua | Honolulu, HI | $150 | 1 | 1 | 2023 |
| Mental Health America of Hawaii | Honolulu, HI | $150 | 1 | 1 | 2023 |
| Parts Per Trillion Foundation | Waialua, HI | $150 | 1 | 1 | 2023 |
| Special Olympics Hawaii Inc | Ewa Beach, HI | $150 | 1 | 1 | 2023 |
77 of 189 (41%) received money in more than one year over the 4 years we hold.
Measured the way we measure every foundation -- what share of one year's grantees are funded again the next -- this one retains 45%, across 3 year-to-year transitions. The median foundation retains about 67%, so this one is less consistent than most. This measures how often it paid the same organizations again. It says nothing about whether it would consider a new one.
What the money was for
Taken verbatim from the purpose field of its filings. This is the closest thing to a statement of what this foundation cares about, in its own words.
- Hawaii Community Foundation (hcf)
PARTNERING TO ADVANCE HAWAI'I'S MARINE 30X30 INITIATIVE PHASE I: BUILDING A POOLED FIELD OF INTEREST FUND [5046; PC] - Social Finance Inc
PROPOSAL TO SERVE AS HAWAII RENEWABLE LEARNING FUND MANAGER [6086; PC] - University of Hawaii Foundation
SOAR HIGHER - SUPPORT FOR WINDWARD OAHU SCHOOLS TO PARTICIPATE AS A GEAR UP 6-16 MODEL [5173; PC] - 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] - The Nature Conservancy of Hawaii
E OLA KE KAI, E OLA KAKOU (AS THE OCEAN THRIVES, SO DO WE): 3-YEAR CORE SUPPORT TO TNC-HAWAI'I MARINE PROGRAM (2020-2022) FOCUSING ON COMMUNITY, STRATEGY AND TECHNICAL EXPERTISE [4861; PC] - Hookuaaina
TO 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]
What kind of organizations it funds
By the activity category the IRS assigns each recipient, for the 225 grants where we could match the recipient to a registered organization. The categories are the IRS's. The match, made from the name and address on the return, is ours.
Giving by year
| Tax year | Grants | Total | Median grant |
|---|---|---|---|
| 2021 | 100 | $7,346,190 | $45,000 |
| 2022 | 77 | $8,009,541 | $70,000 |
| 2023 | 111 | $7,485,951 | $40,000 |
| 2024 | 106 | $6,886,001 | $25,000 |
Tax years, not calendar years, and the most recent year is usually incomplete -- filings arrive about a year late, so a low final year means late paperwork rather than a foundation winding down.
Already committed for future years
Form 990-PF has a separate schedule for grants approved but not yet paid. Harold Kl Castle Foundation has 181 of them, worth $26.8M. This is the one part of the filing that looks forward rather than back.
| Organization | Location | Approved |
|---|---|---|
| University of Hawaii Foundation | Honolulu, HI | $1,852,340 |
| University of Hawaii Foundation | Honolulu, HI | $1,323,100 |
| Social Finance Inc | Boston, MA | $1,100,000 |
| Kuaaina Ulu Auamo (kua) | Kaneohe, HI | $1,100,000 |
| Hawaii Community Foundation (hcf) | Honolulu, HI | $1,000,000 |
| Kuaaina Ulu Auamo (kua) | Kaneohe, HI | $1,000,000 |
| Hawaii Community Foundation (hcf) | Honolulu, HI | $800,000 |
| University of Hawaii Foundation | Honolulu, HI | $793,860 |
| Hawaii Community Foundation (hcf) | Honolulu, HI | $700,000 |
| Manoa Heritage Center | Honolulu, HI | $575,000 |
| The Nature Conservancy of Hawaii | Honolulu, HI | $560,000 |
| Social Finance Inc | Boston, HI | $550,000 |
| The Nature Conservancy of Hawaii | Honolulu, HI | $550,000 |
| University of Hawaii Foundation | Honolulu, HI | $543,440 |
| Hawaii Community Foundation (hcf) | Honolulu, HI | $500,000 |
Where its money goes
89% of its giving went to organizations in Hawaii. If your organization is based elsewhere, look in the recipient list for grants to your area before writing.
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Funders that support the same organizations
These funders gave to organizations this one also funded -- some private foundations, some community foundations and other grantmaking charities. Shared grantees are a sign of overlapping priorities and nothing more: they do not show that any of these funders would consider a new organization. Each page says what its filings show.
How to approach this foundation
- Check you are its size. The median grant is $45,000. A request many times that size asks for something it has rarely or never given.
- Check you are in its geography. Its giving is concentrated in Hawaii.
- Read the recipient list above for organizations like yours. If nothing on it resembles your work, that is a real answer, and a cheap one to get.
- Look up the current filing before writing. The 990-PF names the foundation's officers and, where one exists, its application procedure. We link it below.
Where these numbers come from
Everything above is taken from Harold Kl Castle Foundation's own Form 990-PF filings, which the IRS publishes in bulk. We used 4 returns (tax years 2021-2024). Grant figures are from its returns. Matching recipients to registered organizations, their IRS classifications, the retention rate and the funders that support the same organizations are our own calculations, described in how we build this.
Address of record on the latest return: 1197 Auloa Road, Kailua, HI, 96734. This is the address the foundation gave the IRS; many small foundations file through an accountant or a bank trust department, so it may not be where post to a programme officer should go.
EIN 99-6005445 · See the original filings on ProPublica · How we build this
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