UNITED STATES
          
          SECURITIES AND EXCHANGE COMMISSION
          
          Washington, D.C. 20549
          SCHEDULE 14A
          Proxy Statement Pursuant to Section 14(a) of
          
          the Securities Exchange Act of 1934 (Amendment No.   )
          Filed by the Registrant ☒
          Filed by a Party other than the Registrant  ☐
          Check the appropriate box:
          | ☐ |  |  | Preliminary Proxy Statement | 
|  ☐ |  |  | Confidential, for Use of the Commission Only (as permitted by
                    Rule 14a-6(e)(2)) | 
|  ☐ |  |  | Definitive Proxy Statement | 
|  ☒☒ |  |  | Definitive Additional Materials | 
|  ☐ |  |  | Soliciting Material under §240.14a-12 | 
Amicus Therapeutics, Inc.
          (Name of Registrant as Specified in Its Charter)
          (Name of Person(s) Filing Proxy Statement, if other than the Registrant)
          Payment of Filing Fee (Check all boxes that apply):
          | ☒ |  |  | No fee required. | 
|  ☐ |  |  | Fee paid previously with preliminary materials. | 
|  ☐ |  |  | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules
                    14a-6(i)(1) and 0-11. | 

