Chad Stoller is a mobile and digital media expert and lifelong New Yorker. As Managing Partner at IPG Media Lab, he brings two decades of experience standing at the increasingly busy intersection of agencies and technology. Before IPG, he served as the Executive VP of Digital Strategy at BBDO and led the Emerging Platforms team at digital advertising agency Organic Inc. He is an angel investor in Foursquare and an advisor to 140 Proof.

Stoller is credited as inventor of the "Mayor" feature in Foursquare.