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Insider Trading Arrangements
 3 Months Ended
Sep. 30, 2025
shares
Trading Arrangements, by Individual  
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
Adam Smith [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement During the fiscal quarter ended September 30, 2025, Peter S. Ho, Chairman and Chief Executive Officer of Bank of Hawaii Corporation adopted a Rule 10b5-1 trading plan intended to comply with Rule 10b5-1(c) of the Securities Exchange Act of 1934. The arrangement was entered into in accordance with the Company’s insider trading policy and applicable securities laws. The plan was adopted on August 29, 2025 and is scheduled to remain in effect through December 31, 2026. Under the terms of the arrangement, Mr. Ho has authorized the sale of up to 60,000 shares of the Company's common stock.
Peter S. Ho [Member]  
Trading Arrangements, by Individual  
Name Peter S. Ho
Title Chairman and Chief Executive Officer
Rule 10b5-1 Arrangement Adopted true
Adoption Date August 29, 2025
Arrangement Duration 489 days
Aggregate Available 60,000