X0306 4 2017-12-18 0000203527 VARIAN MEDICAL SYSTEMS INC VAR 0001313996 WILSON DOW R C/O VARIAN MEDICAL SYSTEMS, INC. 3100 HANSEN WAY, M/S E-327 PALO ALTO CA 94304 1 1 President and CEO Common Stock 2017-12-18 4 M 0 88766 60.91 A 155542 D Common Stock 2017-12-18 4 S 0 79490 110.9212 D 76052 D Common Stock 2017-12-18 4 S 0 9276 111.6655 D 66776 D Non Qualified Stock Option (Right to Buy) 60.91 2017-12-18 4 M 0 88766 0 D 2019-11-09 Common Stock 88766 0 D This transaction is pursuant to the filer's SEC Rule10b5-1 Stock Plan The stock options were adjusted pursuant to the Employee Matters Agreement between Varian Medical Systems, Inc. ("Varian") and Varex Imaging Corporation ("Varex") relating to the January 28, 2017 distribution by Varian to its stockholders of all of the outstanding shares of the common stock of Varex. Stock options that were outstanding at the time of the distribution were adjusted by multiplying the number of shares subject thereto by 1.1303 and rounding down to the nearest whole share, and dividing the per share exercise price by 1.1303 and round up to the nearest cent. The 79,490 shares were sold in multiple transactions executed on the same day at prices ranging from $110.39 to $111.385. The detailed breakdown of executed sales will be furnished upon request. The 9,276 shares were sold in multiple transactions executed on the same day at prices ranging from $111.42 to $112.21. The detailed breakdown of executed sales will be furnished upon request. Stock option granted under the Varian Medical Systems, Inc. Third Amended and Restated 2005 Omnibus Stock Plan, which complies with Rule 16b-3. The option vests as follows: one third on 11/09/2013, and the remaining shares in 24 equal installments over the 24 months following the first vesting date. /s/ Franco N. Palomba, Attorney in Fact for Dow R. Wilson 2017-12-18