NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency (KBRA) releases a comment on Allegiance Bancshares, Inc.’s (NASDAQ: ABTX), (“Allegiance” or “the Company”) pending acquisition of Post Oak Bancshares, Inc. (“Post Oak”). Houston, Texas based Allegiance Bancshares, Inc. announced a definitive merger agreement with Post Oak Bancshares, Inc., the privately held holding company of Post Oak Bank, N.A, whereby Post Oak would merge with and into Allegiance. The 100% stock transaction is valued at app