Allison Dukes says she will not be joining the combined company because she wants to remain in Atlanta, where she is involved with several civic and philanthropic organizations. The merged company will be headquartered in Charlotte, N.C.
The deal will give Janney greater access to the community banking sector.
United Community, Synovus, Cadence and others stand to gain lenders and customers even if BB&T flawlessly integrates the $28 billion acquisition.
The industry's largest acquisition in more than a decade will create the sixth-biggest bank in the country, with assets of more than $442 billion.