Ackman expected to shake up Chipotle leadership, restore burrito brand

Activist investor William Ackman is hungry to repair Chipotle Mexican Grill after taking a stake in the burrito chain and could begin by shaking up a long-serving board and possibly replacing the two co-chief executives, analysts and investors said. Chipotle is struggling to revive sales after food-borne illness outbreaks and its share price is down nearly 40 percent in the last year. Ackman, who made his reputation by ousting what he considers underperforming board members and executives, in a