Zumiez Inc. announced that total net sales for the four-week period ended May 4, 2013 increased 12.1 percent to $43.0 million, compared to $38.4 million for the four-week period ended April 28, 2012. The Company’s comparable store sales increased 4.6 percent for the four-week period ended May 4, 2013 compared to a comparable store sales increase of 10.1 percent for the four-week period ended April 28, 2012.