Sam I. Baxter has been promoted to regional executive at NBSC in Columbia. Baxter will oversee 12 retail branches across Richland, Lexington and Kershaw counties. He also will lead a team of commercial and private bankers. NBSC also has promoted John C. Griggs III to Columbia market president. Griggs will manage the Columbia team’s services to both commercial and retail customers. In addition, NBSC has promoted Bill LaMotte to senior commercial banker, and has expanded Jessie C. Ford’s position to include managing the Columbia private banking team.