After mushrooming from a single location just a few years ago into one of Atlanta’s largest occupiers of office space, WeWork is close to announcing its first entrance into the city’s suburbs. The co-working giant is talking with the ownership of 1155 Perimeter Center West, a 12-story office building along Georgia 400 by the Sandy Springs MARTA station. WeWork could occupy up to 75,000 square feet, or three floors, in the building. Piedmont Office Realty Trust, owner of 1155 Perimeter Center West, does not comment on active deals, said George Wells, executive vice president of the company’s Southeastern Region. The building in Atlanta’s Central Perimeter counts among its tenants enterprise software maker VMware Inc. (NYSE: VWM).