David Katz, VP and GM of consumer mobile for Groupon, is joining Fanatics, the fan e-commerce website, as its SVP and GM of mobile, according to a report from TechCrunch.

He will join Fanatics in August. Groupon confirmed the report to the technology website.

Katz has been with Groupon since April 2011. Previously, he spent six years at Yahoo, with the last three as VP of mobile.

In early June, Fanatics raised $170 million in a new funding round, Michael Rubin, chief executive of Fanatics' parent company Kynetic LLC, told the Wall Street Journal. The new funding comes from Singapore state-owned investment company Temasek Holdings Pte. Ltd., and Alibaba Group Holding Ltd. A source told the Journal that the funding more than doubles the retailer's valuation to $3.1 billion from just a year ago.

Rubin said Fanatics revenues will reach $1 billion this year, up from $800 million last year, and it continues to be profitable. He said the company has no plans to go public.