X0306 4 2019-04-01 0000203527 VARIAN MEDICAL SYSTEMS INC VAR 0001753950 Toth Christopher A. C/O VARIAN MEDICAL SYSTEMS, INC. 3100 HANSEN WAY M/S E327 PALO ALTO CA 94304 1 SVP and Pres. Oncology Systems Common Stock 2019-04-01 4 M 0 1400 112.82 A 2521 D Common Stock 2019-04-01 4 S 0 1400 142.50 D 1121 D Non Qualified Stock Option (Right to Buy) 112.82 2019-04-01 4 M 0 1400 0 D 2025-02-08 Common Stock 1400 10391 D This transaction is pursuant to the filer's SEC Rule10b5-1 Stock Plan Stock option granted under the Varian Medical Systems, Inc. Fifth Amended and Restated 2005 Omnibus Stock Plan which complies with Rule 16b-3. The option vests as follows: one third on February 8, 2019, and the remaining shares in 24 equal installments over the 24 months following the first vesting date. /s/ Michael B. Dunn , attorney-in-fact for Christopher A. Toth 2019-04-02