During the early 2000s, the building became known as the Wachovia Building. Wachovia became the building's largest tenant after merging with First Union Corporation early in the decade. In 2006, Wachovia re-negotiated its lease, which was set to expire in 2010. After exploring other potential new office space in Center City, Wachovia made a deal to stay in the Wachovia Building along with the neighboring Witherspoon Building, the nearby One South Broad, and the Widener Building until the 2020s. The building became known as the Wells Fargo Building after Wells Fargo, which bought Wachovia in 2008, re-branded Wachovia area banks in April 2011. Wells Fargo marketed the change by having a stagecoach carrying Philadelphia mayor Michael Nutter and others ride from Philadelphia City Hall to the Wells Fargo Building.