X0306 4 2022-06-23 0 0001799448 Aligos Therapeutics, Inc. ALGS 0001602402 Nielsen Jack C/O ALIGOS THERAPEUTICS, INC. 1 CORPORATE DRIVE, 2ND FLOOR SOUTH SAN FRANCISCO CA 94080 1 0 0 0 Stock Option (Right to Buy) 1.34 2022-06-23 4 A 0 15000 0.00 A 2032-06-23 Common Stock 15000 15000 D The shares subject to the option will vest and become exercisable as to 100% of the total number of shares subject to the option on the earlier of the first anniversary of the grant date or immediately prior to the annual meeting in 2023 of the Issuer's stockholders, subject to continuous service to the Issuer through such vesting date. /s/ Lucinda Y. Quan, as attorney-in fact for Jack B. Nielsen 2022-06-27