Sue Bostrom to Retire from the Varian Medical Systems Board at the End of 2019

Varian Medical Systems, Inc. is a manufacturer of medical devices and software for treating cancer and other medical conditions with radiotherapy, cardiac radioablation, radiosurgery, proton therapy and brachytherapy. The Company also has Varian Particle Therapy (VPT) and the operations of the Ginzton Technology Center (GTC). Its VPT business develops, designs, manufactures, sells and services products and systems for delivering proton therapy, another form of external beam radiotherapy using proton beams for the treatment of cancer. Its ProBeam system is capable of delivering intensity modulated proton therapy (IMPT) using pencil beam scanning technology. Its ProBeam Compact is a single room proton therapy product. Through its subsidiary, Cooperative CL Enterprises, the Company distributes radiotherapy equipments in Taiwan.