B/E Aerospace Inc., the maker of seats for commercial and business jets, surged the most since 2011 after saying it hired financial and legal advisers to study options including a sale.

The strategic review disclosed Sunday surprised analysts after B/E said in April it was working on two acquisitions of its own. The announcement’s timing and cancellation of an investor meeting Monday suggests that B/E is already in advanced negotiations, said Yair Reiner, an Oppenheimer & Co. analyst.