Key TakeawaysSouthwest Airlines announced a resolution to its discussions with activist investor Elliott Investment Management that adds six new directors to the company's board.The carrier also reported third-quarter results that came in better than expected on the top and bottom lines.Southwest also plans to buy back $250 million in stock in the fourth quarter after announcing a new $2.5 buyback program last month. Southwest Airlines (LUV) announced a settlement with Elliott Investment Management Thursday ...