Bryan Timm, long-time executive of Columbia Sportswear, has stepped down from his role as president. It's unclear why he's left.

CEO Tim Boyle said Tuesday in a press release that Timm, who started with the brand in 1997 as corporate controller, had "played an integral role in our journey from a single brand brand with $300 million in sales in 1997 to a publicly-traded, multi-brand, multi-channel business with $2.4 billion in sales in 2016 and more than 6,000 employees around the world."

Timm's departure comes just a few weeks after Columbia announced that it had had reached record sales. In the first quarter of 2017, Columbia reached $543.8 million in sales, up 4 percent from the first quarter of 2016. 

Columbia Sportswear Company stock dropped slightly after the announcement. It opened at $54.52 Tuesday, and was trading at $52.05 Thursday afternoon.