X0609 4 2026-06-04 0000861842 CATHAY GENERAL BANCORP CATY 0001185633 TANG ANTHONY M false 777 NORTH BROADWAY LOS ANGELES CA 90012 1 1 Vice Chairman 0 Common Stock 114410 I By ESOP Common Stock 300000 I YFO Investments, spouse is a beneficiary Common Stock 371399 I By spouse Common Stock 2026-06-04 4 S 0 10000 58.1633 D 167876 D Common Stock 2026-06-05 4 S 0 5000 58.3689 D 162876 D Common Stock 2026-06-08 4 S 0 10000 58.90020 D 152876 D Includes 1,582.906 shares acquired through dividend reinvestment year-to-date The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $58.01 to $58.34, 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. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $58.36 to $58.43, 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. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $58.78 to $59.06, 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 2026-06-08