 TYLER, Texas, May 06, 2021 GLOBE NEWSWIRE -- The Board of Directors of Southside Bancshares, Inc., NASDAQ:SBSI, parent company of Southside Bank, approved a 3.1 increase to the regular quarterly cash dividend of 0.01, to 0.33 per common share and declared a regular quarterly cash dividend of 0.33 per common share. The cash dividend is scheduled for payment on June 3, 2021, to common stock shareholders of record on May 20, 2021. 