X0306 4 2023-01-06 0 0001070494 ACADIA PHARMACEUTICALS INC ACAD 0001746240 KIM AUSTIN D. C/O ACADIA PHARMACEUTICALS INC. 12830 EL CAMINO REAL, SUITE 400 SAN DIEGO CA 92130 0 1 0 0 EVP,General Counsel, Secretary Common Stock 2023-01-06 4 M 0 1633 A 19286 D Common Stock 2023-01-09 4 S 0 589 17.1303 D 18697 D Restricted Stock Units 2023-01-06 4 M 0 1633 0.00 D Common Stock 1633 1634 D Each restricted stock unit represents a contingent right to receive one share of Acadia common stock. Includes 911 shares of the Issuer's common stock acquired by the reporting person on May 16, 2022 pursuant to an employee stock purchase program. The sales reported in this Form 4 were made to cover the tax obligation that occurred upon the vesting of restricted stock units. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.13 to $17.19, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. The restricted stock units vest in four equal annual installments beginning January 6, 2021. /s/ Austin D. Kim 2023-01-10