X0306 4 2023-03-02 0001177648 ENANTA PHARMACEUTICALS INC ENTA 0001225503 CARTER BRUCE L A C/O ENANTA PHARMACEUTICALS, INC. 500 ARSENAL STREET WATERTOWN MA 02472 1 0 0 0 Stock Option (right to buy) 47.72 2023-03-02 4 A 0 10800 0 A 2033-03-02 Common Stock 10800 10800 D Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (March 2, 2023), with the final monthly installment vesting on the nearest trading day on the Nasdaq Global Select Market preceding the 2024 annual meeting of stockholders. /s/ Nathaniel S. Gardiner as attorney-in-fact 2023-03-06