Shares of the Baltimore-based company fell 2.2% in extended trade.
The apparel maker named Chief Operating Officer Colin Browne as its interim CEO while it searches for a permanent replacement.
The move comes as the company, like other US firms, struggles with supply chain disruptions and China lockdowns, which have pushed its shares down more than 50% 今年.
Under Armour (UA) said Frisk
, who joined Under Armour in
2017, will remain with the company as an adviser through Sept
Browne joined Under Armour in 2016 and has been its operating chief since 2020.