X0306 4 2021-03-15 0000861842 CATHAY GENERAL BANCORP CATY 0001207193 CHEN HENG W 777 NORTH BROADWAY LOS ANGELES CA 90012 1 EVP/CFO Common Stock 2021-03-15 4 M 0 2134 0 A 128249 D Common Stock 2021-03-15 4 F 0 731 43.37 D 127518 D Restricted Stock Units 2021-03-15 4 M 0 3386 0 D Common Stock 0 0 D Of the previously reported target award of 3,386 shares of performance-based restricted stock units, 56% of the target award was earned based upon the achievement of certain performance criteria. Shares of the Issuer's Common Stock received by the Reporting Person from the vesting of performance-based restricted stock units granted on December 26, 2017. Such restricted stock units were previously reported in Table II on a Form 4 filed by the Reporting Person with the Securities and Exchange Commission on December 28, 2017. Performance-based restricted stock units vested on December 31, 2020. /s/ Georgia Lo, attorney-in-fact 2021-03-17