CBTX, Inc. Information Request Form

Levi & Korsinsky, LLP has commenced an investigation into the fairness of the merger of CBTX, Inc. (“CBTX” or the “Company”) (NASDAQ: CBTX) with Allegiance Bancshares, Inc. (NASDAQ: ABTX) (“Allegiance”). Under the terms of the merger, Allegiance shareholders will receive 1.4184 shares of CBTX common stock for each share of Allegiance common stock they own.

The CBTX merger investigation concerns whether the Board of CBTX has harmed stockholders by agreeing to enter into this transaction and whether all material facts have been properly disclosed to stockholders.