X0306 4 2016-10-06 0000019446 CANTEL MEDICAL CORP CMN 0000905400 DIKER CHARLES M 730 FIFTH AVE. NEW YORK NY 10019 1 1 1 0 Chairman Common Stock, par value $.10 per share 2016-10-06 4 S 0 2761 78.8528 D 3190111 D Common Stock, par value $.10 per share 2016-10-07 4 S 0 7100 78.4558 D 3183011 D Common Stock, par value $.10 per share 2016-10-10 4 S 0 5036 79.1521 D 3177975 D Common Stock, par value $.10 per share 460288 I By wife Common Stock, par value $.10 per share 84054 I By custodial accounts for benefit of grandchildren Common Stock, par value $.10 per share 234271 I By trust for benefit of children Common Stock, par value $.10 per share 29430 I Shares held by Dico Group, Inc. The per share prices ranged from $78.60 to $79.10. Upon request by the Commission staff, the issuer or the reporting person will provide full information regarding the number of shares sold at each separate price. The per share prices ranged from $78.00 to $79.00. Upon request by the Commission staff, the issuer or the reporting person will provide full information regarding the number of shares sold at each separate price. The per share prices ranged from $79.00 to $79.72. Upon request by the Commission staff, the issuer or the reporting person will provide full information regarding the number of shares sold at each separate price. /s/ Charles M. Diker 2016-10-10