You must contact Shareholder Services at American Stock Transfer & Trust Company LLC (AST) (www.astfinancial.com). The company can look up your records and make any necessary adjustments. There is a fee involved for replacing lost certificates. Contact information for AST’s Shareholder Services:
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