X0508 4 2024-11-27 0001177648 ENANTA PHARMACEUTICALS INC ENTA 0001705824 Kowalsky Matthew Paul C/O ENANTA PHARMACEUTICALS, INC. 4 KINGSBURY AVENUE WATERTOWN MA 02472 0 1 0 0 Chief Legal Officer 0 Stock Option (right to buy) 8.83 2024-11-27 4 A 0 75000 0.00 A 2034-11-27 Common Stock 75000 75000 D Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 27, 2024). /s/ Matthew Paul Kowalsky 2024-11-27