Complex sentence: In 2000, VanderSloot sold all of his interest in the company to Suprema Specialties, and in 2006, the factory, which by then had been renamed as the Blackfoot Cheese Company, was sold to Sartori Foods.
Split into simpler sentences: In 2000, VanderSloot sold all of his interest in the company to Suprema Specialties. In 2006, the factory, which by then had been renamed as the Blackfoot Cheese Company, was sold to Sartori Foods.