You must send both your old and new addresses to AST by mail. Each stockholder in question must sign the request for an address change. For more information, please contact AST at:
Phone : 1-800-937-5449 (toll free in Canada and the United States) between the hours of 8:00 a.m. and 8:00 p.m. Eastern Time or 718-921-8124 (international direct dial).
Mail: AST, Attn: Helius Medical Technologies, 6201 15th Avenue, Brooklyn, NY 11219