So has been the CEO of JWT Hong Kong for eight years. A 20-plus year advertising veteran, he was also the founder of Freeway and GM for DMBMB.
So said his last day with the agency will be mid-March but did not reveal his next career move.
Dennis Wong, who came out of retirement to bolster Euro RSCG's operations in Hong Kong and subsequently resigned from his role as MD to spend time with his family last year, is set to take over from So at JWT. His start date is yet to be confirmed.
Steven Lee, ECD of the agency, has also resigned, and will be leaving the agency at the end of February. At the moment there is no replacement.
An undisclosed industry source said that So's departure is due to a management disagreement.