Lewis Rothkopf is General Manager, Media and Growth Channels, where he is responsible for managing and growing the company's inventory relationships and overall supply chain worldwide. He joins MediaMath with more than 19 years experience in the digital advertising industry. Most recently, Lewis was Chief Revenue Officer of AdsNative, where he led worldwide sales, strategic partnerships and marketing for the company's suite of monetization solutions for leading publishers and app developers. Previously Lewis was with AOL’s Millennial Media, where he was responsible for all supply-side relationships and publisher-facing sales worldwide as SVP of Global Monetization Solutions.

He joined Millennial via the company's acquisition of Jumptap, where he led the mobile ad network's publisher acquisition and network development efforts as SVP. Prior to Jumptap, Rothkopf served as general manager of AMP, a sell-side data and media management platform, for multi-screen company Collective. Earlier, Rothkopf was SVP of Network and Exchange at BrightRoll (now part of Yahoo), where he built, scaled, and managed the company's industry-leading video ad network, programmatic video ad exchange, and mobile inventory businesses. Earlier in his career, Rothkopf led content distribution partnerships for NBCUniversal’s digital video syndication and advertising platform. Additionally, he spent five years at DoubleClick (now Google) in strategic sales, building strong relationships with large publishers and multimedia networks.