As Pokémon Go grew, so did the companies that wanted to partake. Here are the past, present and future sponsors.
Sprint
Added on December 7, 2016. This added Pokéstops/Gyms for 10,500 Sprint locations around the United States. Source article.
Starbucks
Added on December 7, 2016. This added Pokéstops/Gyms for 7,900 company operated Starbucks in the United States. Source article.