Under Armour reported a net loss of $43.4 million for its fiscal fourth quarter, as revenue fell and tariffs compressed margins, the company said Tuesday. Revenue for the three months ended March 31 declined 1% to $1.17 billion, with North America revenue down 7% to $640.9 million. International revenue rose 10% to $539 million, partially offsetting the domestic decline, the company said. A combination of higher tariffs, elevated product costs, pricing headwinds, and an unfavorable regional mix pushed g ...