<ACCESSION-NUMBER>0000705432-19-000037 <TYPE>DEFA14A <PUBLIC-DOCUMENT-COUNT>3 <FILING-DATE>20190326 <DATE-OF-FILING-DATE-CHANGE>20190326 <EFFECTIVENESS-DATE>20190326 <FILER> <COMPANY-DATA> <CONFORMED-NAME>SOUTHSIDE BANCSHARES INC <CIK>0000705432 <ASSIGNED-SIC>6022 <IRS-NUMBER>751848732 <STATE-OF-INCORPORATION>TX <FISCAL-YEAR-END>1231 </COMPANY-DATA> <FILING-VALUES> <FORM-TYPE>DEFA14A <ACT>34 <FILE-NUMBER>000-12247 <FILM-NUMBER>19705318 </FILING-VALUES> <BUSINESS-ADDRESS> <STREET1>1201 S BECKHAM <CITY>TYLER <STATE>TX <ZIP>75701 <PHONE>9035317111 </BUSINESS-ADDRESS> <MAIL-ADDRESS> <STREET1>1201 S BECKHAM <CITY>TYLER <STATE>TX <ZIP>75701 </MAIL-ADDRESS> <FORMER-COMPANY> <FORMER-CONFORMED-NAME>SOBANK INC <DATE-CHANGED>19920703 </FORMER-COMPANY> </FILER>