Andy Dunn, co-founder of Walmart Inc.-owned men's clothing startup Bonobos Inc., is leaving the retail company in early 2020.

Dunn disclosed the move in a letter published on employment-oriented platform LinkedIn, without disclosing the reason for his departure.

Dunn joined Walmart in 2017 after the company bought Bonobos for $310 million.

Dunn was responsible for a number of Walmart's small e-commerce acquisitions and digitally focused brands, according to The Wall Street Journal. He also reportedly created a number of new brands within Walmart, including online mattress brand Allswell.