X0508 4 2024-03-01 0001799448 Aligos Therapeutics, Inc. ALGS 0001242110 BLATT LAWRENCE C/O ALIGOS THERAPEUTICS, INC. 1 CORPORATE DRIVE, 2ND FLOOR SOUTH SAN FRANCISCO CA 94080 true true Chief Executive Officer false Stock Option (Right to Buy) 1.13 2024-03-01 4 A 0 965435 0 A 2024-03-01 Common Stock 965435 965435 D 1/48th of the total number of shares vest in forty-eight (48) successive and equal monthly installments measured from March 1, 2024 (the "Vesting Commencement Date"), such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date, subject to the Reporting Person's continued service through each vesting date. /s/ Lesley Ann Calhoun, as attorney-in fact for Lawrence M. Blatt 2024-03-04