Foundations · IRS 990 filings

Foundations in Hawaii

471
foundations
$304.2M
grants paid, FY2023–FY2025
135
say they accept unsolicited
$7,500
median grant

Grantlas lists 471 foundations based in Hawaii — 448 private foundations and 23 grantmaking charities such as community foundations and United Ways — from their 990-PF and Form 990 filings for FY2023–FY2025. Together they paid out $304.2 million in grants in their latest filing year, and 135 of them (29%) say they accept unsolicited requests. The most common cities are Honolulu (338), Kailua (13) and Kailua Kona (12).

135 of them say on their 990-PF that they accept unsolicited requests. Foundations accepting applications in Hawaii.

Top 25 of 471 foundations

All 25 foundations below say on their 990-PF that they accept unsolicited requests. Another 110 in this list say so too. Ranked by what they paid in grants in their latest filing.

Foundations in Hawaii
Harold Kl Castle FoundationKailua, HI$25,000$6.7M$500–$550,000FY2024Locked: fit score and contacts
Atherton Family FoundationHonolulu, HI$5.6M$5.6M—FY2024Locked: fit score and contacts
The Clarence Tc Ching FoundationHonolulu, HI$25,000$5.4M$5,000–$600,000FY2024Locked: fit score and contacts
Kosasa FoundationHonolulu, HI$45,000$5.2M$3,000–$500,000FY2024Locked: fit score and contacts
The Victoria S and Bradley L Geist FoundationHonolulu, HI$2.9M$3.2M$2.6M–$3.2MFY2025Locked: fit score and contacts
Hmsa FoundationHonolulu, HI$50,000$2.1M$2,000–$1.2MFY2024Locked: fit score and contacts
Frost Family FoundationHonolulu, HI$25,000$2M$5,000–$1.1MFY2024Locked: fit score and contacts
Samuel N & Mary Castle FoundationHonolulu, HI$1.9M$1.9M—FY2024Locked: fit score and contacts
First Hawaiian Bank FoundationHonolulu, HI$25,000$1.8M$2,500–$250,000FY2024Locked: fit score and contacts
The Strong FoundationHonolulu, HI$100,000$1.6M$50,000–$200,000FY2024Locked: fit score and contacts
James & Abigail Campbell FamilyKapolei, HI$25,000$1.6M$5,000–$771,150FY2024Locked: fit score and contacts
Tradewind Group FoundationHonolulu, HI$4,596$1.5M$30–$100,510FY2025Locked: fit score and contacts
Cooke Foundation LimitedHonolulu, HI$20,000$1.4M$2,617–$391,859FY2024Locked: fit score and contacts
Bank of Hawaii Charitable FoundationHonolulu, HI$25,000$1.4M$1,000–$297,500FY2024Locked: fit score and contacts
Hawaii Realtors Charitable FoundationHonolulu, HI$2,500$1.3M$200–$3,000FY2024Locked: fit score and contacts
Hawaiian Electric Industries CharitableHonolulu, HI$1.3M$1.3M—FY2024Locked: fit score and contacts
Ama Olukai FoundationHonolulu, HI$12,000$1.2M$300–$1MFY2025Locked: fit score and contacts
Charles and Mitch Ota FoundationHonolulu, HI$20,000$1.1M$5,000–$100,000FY2025Locked: fit score and contacts
Central Pacific Bank FoundationHonolulu, HI$6,477$816,461$300–$110,000FY2025Locked: fit score and contacts
Hans and Clara Zimmerman FoundationHonolulu, HI$6,000$777,983$2,500–$241,053FY2025Locked: fit score and contacts
The Cades FoundationHonolulu, HI$7,500$710,920$1,000–$50,000FY2024Locked: fit score and contacts
J Watumull FundHonolulu, HI$2,000$683,500$500–$50,000FY2024Locked: fit score and contacts
The I Michael and Beth Kasser FoundatioKailuakona, HI$100,000$580,336$33,333–$250,000FY2025Locked: fit score and contacts
First Insurance CompanyHonolulu, HI$5,000$540,780$40–$48,350FY2025Locked: fit score and contacts
Loretta Luke Yajima Dream BigHonolulu, HI$100,000$512,000$100,000–$312,000FY2025Locked: fit score and contacts
  • Median grant and grant range come from the 990-PF grant schedule; a dash means there is none to report.
  • “One grant” means a schedule with a single grant — no median, nothing to range over. “One amount” means several grants, all the same size.

446 more foundations — see all in Grantlas

Data from 990-PF and Form 990 filings, FY2023–FY2025. Updated November 8, 2026.