Shares of Southwest Airlines Co. LUV shed 2.4% in premarket trading Thursday, after the air carrier reported a much wider-than-expected fourth-quarter loss, and warned of another loss in the current quarter, while apologizing for the “operational disruptions” during the holiday travel season. The company swung to a net loss of $220 million, or 37 cents a share, from net income of $68 million, or 11 cents a share, in the year-ago period. Excluding nonrecurring items, the adjusted per-share loss of 38 cents compared with the FactSet loss consensus of 7 cents. Revenue grew 22.2% to $6.17 billion, but missed the FactSet consensus…






