DAVID BLOCK is the Group's CEO (as of May 2017). He is a Director in the Group's subsidiaries, Galatea, Sarin India, Sarine Color Technologies, Sarine Polishing Technologies, Sarine Hong Kong, Sarine Holdings USA, Sarine North America, Sarine IGT H, Sarine IGT I and Sarine IGT JKL. Prior to his appointment as CEO, he was Deputy CEO and Chief Operating Officer (COO) since 2012, with responsibility for worldwide operations, worldwide sales, including the network of distributors/ resellers, and customer care. Prior to that appointment, from June 2009, Mr. Block was Deputy CEO and VP of Sales responsible for overseeing the Group's worldwide sales, including its network of distributors/resellers and subsidiaries. Beginning January 2006, for a period of three years, Mr. Block was the CEO of Sarin India in charge of the overall management of the operations and business in India, responsible for over 70% of the Group's revenues and the supervision of over 200 employees. Before being assigned to Sarin India, Mr. Block was a Product Manager responsible for all the products aimed at the diamond manufacturing market, commencing 2001. Prior to joining the Group, Mr. Block worked at several major Israeli high technology companies in the management of large-scale development projects, computer programming, quality assurance and technical writing positions. Mr. Block holds a Master of Business Administration (MBA) from the Kellogg-Recanati School of Business, a joint degree from Northwestern University in the USA and Tel Aviv University in Israel, and a Bachelor's degree in Computer Science from the Tel Aviv-Jaffa Academic College in Israel.