Santa Clara County Sheriff’s Deputies are seeking a Cupertino teenager who went missing yesterday morning. 17-year-old Connor Sullivan was last seen at 10 a.m. on-campus at Monta Vista High School. Sullivan is around 5-foot-5 and weighs about 150 pounds. He was last seen wearing a black t-shirt, a faded black sweatshirt, black shorts, and blue and white tennis shoes. He also has a dark colored backpack and an athletic bag. Anyone with information is urged to call 911.