X0306 4 2017-10-31 0 0001645113 Novocure Ltd NVCR 0001654356 Kirson Eilon D. C/O NOVOCURE INC., VALLEY STREAM PARKWAY, SUITE 300 MALVERN PA 19355 0 1 0 0 Chief Science Officer Ordinary Shares 2017-10-31 4 S 0 150 22.00 D 63120 D Ordinary Shares 2017-11-01 4 S 0 22119 22.0087 D 41001 D These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by Mr. Kirson. On November 1, 2017, pursuant to a Rule 10b5-1 trading plan adopted by Mr. Kirson, Mr. Kirson sold 22,119 shares in multiple trades at prices ranging from $22.00 to $22.10. The price reported above reflects the weighted average sale price. Mr. Kirson 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 Eilon D. Kirson 2017-11-02