SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

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☐	Soliciting Material Pursuant to § 240.14a-12

ACADIA Pharmaceuticals Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement if Other Than The Registrant)

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*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on June 13, 2017 Meeting Information ACADIA PHARMACEUTICALS INC. Meeting Type: Annual Meeting For holders as of: April 19, 2017 Date: June 13, 2017 Time: 8:00 AM PDT Location: San Diego Marriott Del Mar 11966 El Camino Real BROKER San Diego, CA 92130 LOGO HERE You are receiving this communication because you hold Return Address Line 1 shares in the above named company. Return Address Line 2 Return Address Line 3 51 MERCEDES WAY This is not a ballot. You cannot use this notice to vote EDGEWOOD NY 11717 these shares. This communication presents only an Investor Address Line 1 overview of the more complete proxy materials that are Investor Address Line 2 1 available to you on the Internet. You may view the proxy Investor Address Line 3 materials online at www.proxyvote.com or easily request a Investor Address Line 4 OF paper copy (see reverse side) Investor Address Line 5 . John Sample We encourage you to access and review all of the important 1234 ANYWHERE STREET information contained in the proxy materials before voting. ANY CITY, ON A1A 1A1 1 OF 2 12 15 See the reverse side of this notice to obtain proxy materials and voting instructions. 0000337433 Broadridge Internal Use Only Job # Envelope # Sequence # # of # Sequence # 0000337433_1 R1.0.1.15 BARCODE

Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: 1. Notice of Meeting and Proxy Statement 2. 10K Wrap How to View Online: Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 30, 2017 to facilitate timely delivery. How To Vote Please Choose One of the Following Voting Methods Vote In Person: If you choose to vote these shares in person at the meeting, you must request a “legal proxy.” To do so, please follow the instructions at www.proxyvote.com or request a paper copy of the materials, which will contain the appropriate instructions. Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow available and follow the instructions. Internal Use Only Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a voting instruction form. 0000337433_2 R1.0.1.15

Voting items The Board of Directors recommends that you vote FOR the following: 1. Election of Directors Nominees 01 James Daly 02 Edmund Harrigan, M.D. The Board of Directors recommends you vote FOR the following proposal(s): 2 To approve an amendment to our 2010 Equity Incentive Plan, as amended, to, among other things, increase the aggregate number of shares of common stock authorized for issuance under the plan by 5,500,000 shares. 3 To approve, on an advisory basis, our executive compensation. The Board of Directors recommends you vote 1 YEAR on the following proposal: 4 To indicate, on an advisory basis, the preferred frequency of stockholder advisory votes on our executive compensation. The Board of Directors recommends you vote FOR the following proposal(s): 5 To ratify the selection of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2017. NOTE: Such other business as may properly come before the meeting or any adjournment thereof. B A R C O D E Broadridge Internal Use Only xxxxxxxxxx xxxxxxxxxx Cusip Job # Envelope # Sequence # # of # Sequence # 0000337433_3 R1.0.1.15 0000 0000 0000 0000

Reserved for Broadridge Internal Control Information
Voting Instructions
THIS SPACE RESERVED FOR LANGUAGE PERTAINING TO BANKS AND BROKERS AS REQUIRED BY THE NEW YORK STOCK EXCHANGE
THIS SPACE RESERVED FOR SIGNATURES IF APPLICABLE
Broadridge Internal Use Only Job # Envelope # Sequence # # of # Sequence #
0000337433_ 4 R1.0.1.15