Since starting at Booking.com in 2002, Gillian has risen to CEO in 2016 and now ranks 37th on the Most Powerful International Women List according to Forbes. Booking.com is owned by Priceline Group (PCLN), who will change to Booking Holdings (BKNG) on February 27th, This reflects Booking.com’s importance to the umbrella company since their acquisition in 2005.