SAN FRANCISCO--(BUSINESS WIRE)--Gap Inc. (NYSE:GPS) today reported that net sales for the four-week period ended May 30, 2015 were $1.25 billion compared with net sales of $1.27 billion for the four-week period ended May 31, 2014. “We’re pleased with Old Navy’s continued momentum and we remain focused on consistently delivering higher levels of performance across our portfolio,” said Sabrina Simmons, chief financial officer, Gap Inc. May Comparable Sales Results Gap Inc.'s comparable sales for