 TYLER, Texas, April 06, 2021 GLOBE NEWSWIRE -- Southside Bancshares, Inc. the Company NASDAQ:SBSI, the holding company of Southside Bank the Bank, has announced the opening of a new location at 1800 Post Oak Blvd., Ste. 300. The office is scheduled to open on April 12, 2021, and will primarily serve the commercial loan market in the Houston area. 