Gap Inc. is considering shutting hundreds of its namesake stores at shopping malls as sales at the Gap brand continue to slide. The retailer said Tuesday evening that it still has 775 Gap-branded stores globally, in addition to those under the Old Navy, Banana Republic and Athleta banners. Gap Inc. has more than 3,000 stores around the world. The namesake brand, however, has been the weakest unit of the company of late. In the third quarter, sales at Gap stores open for at least 12 months fell 7 percent, while those at Old Navy and Banana Republic were positive. CEO Art Peck said that should the company "address" the bottom half of its fleet of Gap stores, it could contribute more than $100 million to earnings. He added the company is looking to make decisions about shutting stores "with urgency."