SAN FRANCISCO--(BUSINESS WIRE)--Gap Inc. (NYSE: GPS) today reported that April net sales were $1.21 billion for the four-week period ended May 2, 2015, compared with net sales of $1.33 billion for the four-week period ended May 3, 2014. For the first quarter of fiscal year 2015, Gap Inc.’s net sales decreased 3 percent to $3.66 billion compared with $3.77 billion for the first quarter last year. The translation of net sales in foreign currencies into U.S. dollars negatively impacted the company