The company has confirmed that Katz will depart at the end of August. He is joining sports gear retailer Fanatics as senior vice president and general manager of mobile operations.
A former vice president of mobile at Yahoo (YHOO), Katz has been part of Groupon’s management team since April 2011, serving as vice president and general manager of retail solutions prior to overseeing mobile operations
Groupon says it has initiated a search for a replacement for Katz.
In February, Groupon ousted its founder and CEO Andrew Mason as it grappled with weak earnings and a sliding share price.
Shares of Groupon rose modestly in pre-market trading on Tuesday.