Lewis Rollins.
Google owns over 170 companies that it has acquired since 2010, averaging more than one acquisition per week. Its largest acquisition was Motorola Mobility for $12.5 billion, though it later sold Motorola to Lenovo for $2.91 billion while keeping the valuable patent portfolio. Google also owns companies like Green Throttle Games and acquired Quest Visual in 2014. It purchased YouTube in 2006.