X0306 4 2019-03-11 0000861842 CATHAY GENERAL BANCORP CATY 0001738532 Kim Lisa L. 777 NORTH BROADWAY LOS ANGELES CA 90012 1 EVP, General Counsel Common Stock 2019-03-11 4 M 0 453 A 7190 D Common Stock 2019-03-11 4 F 0 157 36.53 D 7033 D Restricted Stock Units 2019-03-11 4 M 0 453 0 D Common Stock 453 0 D Represents the conversion into Common Stock upon vesting of the restricted stock units reported on Table II. Each restricted stock unit represented a contingent right to receive one share of Common Stock of the Issuer. Shares withheld by Registrant to satisfy tax withholding requirement on vesting of restricted stock units. The Reporting Person previously reported the award of 453 shares of restricted stock units on Form 3 filed April 26, 2018. Such restricted stock units vested in full on the date of the grant, and shares of common stock distributed on the first anniversary of the date of the grant. /s/ Georgia Lo, attorney-in-fact 2019-03-13