New FNB Headquarters a Cornerstone For One Of the Largest, Most Socially Responsible Development Projects in the U.S. PITTSBURGH, Dec. 16, 2024 /PRNewswire/ -- FNB Financial Center, the new Pittsburgh-based corporate headquarters for F.N.B. Corporation (NYSE: FNB), was recently certified LEED Gold by the U.S. Green Building Council (USGBC). LEED, the world's most widely used green building rating system, provides a framework for energy-efficient, sustainable design, construction and operations. Projects ach ...