0001781730 2026-10-21 2026-10-21 0001781730 false 8-K 2026-10-21 THIRD COAST BANCSHARES, INC. TX 001-41028 46-2135597 20202 Highway 59 North Suite 190 Humble TX 77338 281 446-7000 Not Applicable true false false false Common stock, par value $1.00 per share TCBX NYSE true false