X0609 4 2026-04-06 0000861842 CATHAY GENERAL BANCORP CATY 0001506599 Liu Chang false 777 NORTH BROADWAY LOS ANGELES CA 90012 1 1 President & CEO 1 Common Stock 2026-04-06 4 S 0 4836 50.3527 D 127819 D This transaction occurred automatically pursuant to a Rule 10b5-1(c) trading plan adopted by the reporting person on May 1, 2025. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $50.045 to $50.775, inclusive. The reporting person undertakes to provide to Cathay General Bancorp ("Cathay"), any security holder of Cathay, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. /s/ Georgia Lo, attorney-in-fact 2026-04-07