A shake-up in Omaha’s commercial real estate firms has T.J. Twit, formerly of the Omaha-based Lund Co., taking over as CEO and president of World Group Commercial Real Estate.

A development group has stepped forward to buy downtown’s Lerner Building at 16th and Harney Streets right as the City of Omaha is trying to revitalize 16th Street. The City Council on Tuesday approved the sale of the city-owned property...