X0306 4 2017-05-01 0 0001645113 Novocure Ltd NVCR 0001654403 Palti Yoram C/O NOVOCURE INC., 20 VALLEY STREAM PKWY SUITE 300 MALVERN PA 19355 1 1 0 0 Chief Technology Officer Ordinary Shares 2017-05-01 4 S 0 4000 11.444 D 95825 D Ordinary Shares 2017-05-02 4 S 0 4000 11.836 D 91825 D On May 1, 2017, pursuant to a Rule 10b5-1 trading plan adopted by Professor Palti, Professor Palti sold 4,000 shares in multiple trades at prices ranging from $11.20 to $11.80. The price reported above reflects the weighted average sale price. Professor Palti hereby undertakes to provide to the Staff, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected. On May 2, 2017, pursuant to a Rule 10b5-1 trading plan adopted by Professor Palti, Professor Palti sold 4,000 shares in multiple trades at prices ranging from $11.725 to $11.950. The price reported above reflects the weighted average sale price. Professor Palti hereby undertakes to provide to the Staff, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected. By: /s/ Todd Longsworth, Attorney in fact for Yoram Palti 2017-05-03