Exhibit 99.1

May 26, 2017

BankGuam Holding Company

Declares 2^nd Quarter Dividends

BankGuam Holding Company (BKGMF), announced that its Board of Directors declared a quarterly cash dividend of $0.10 per share for the holders of its common stock and a dividend payment to the holders of the Company’s 5.5% Fixed Rate/Floating Rate Noncumulative Preferred Stock, Series A, at its Board’s regular meeting held on Monday, May 22, 2017. The dividends will be paid on June 30, 2017, to shareholders of record as of June 15, 2017.

BankGuamHolding Company President and Chair of the Board, Lou A. Leon Guerrero stated, “I am happy to report that we remain profitable for this quarter, allowing us to provide a return on our shareholder’s investment and that the book value for our shares has increased.”