Lululemon's shares spike on CEO's resignation — as founder warns of potential proxy battle

Lululemon Athletica’s shares spiked Friday after the company’s CEO Calvin McDonald announced his resignation amid declining US sales, with its founder putting the board on notice about a potential proxy battle.After seven years at the helm, McDonald is stepping down on Jan. 31 and will remain as an advisor to the company through March, he said on a Thursday earnings call discussing two straight quarters of decreasing North America sales.“We agreed that the timing is right for a change,” McDonald said of his ...