Giving in to continuous calls for a strategic overhaul from activist investor Elliott Investment Management,Southwest Airlines (LUV) overhauled its board. Under the plethora of changes, the Dallas-based low-cost carrier’s former CEO and current executive chair Gary Kelly and several board members announced their decision to step down. The board revamp resulted in LUV stock declining 1.6% to close the trading session on Sept. 10 at $29.25 per share.Per a regulatory filing, LUV announced that six of its board ...