Ian Sohn @IanSohn Ian Sohn is a WPP global client lead. In January, Ian assumed global leadership of WPP’s relationship with Walgreens Boots Alliance (WBA). He was also formerly CEO of Wunderman Thompson Central. 4 Ways I’m Challenging Advertising’s Ageism Problem Voice By Ian Sohn February 9, 2020 The narrative around getting older in the advertising industry needs to change.