Prosperity Bancshares (PB) is buying Stellar Bancorp (STEL) in a cash and stock transaction valued at roughly $2 billion. Stellar shareholders will get 0.3803 shares of PB plus $11.36 in cash for each share they own. The merger creates the second largest bank by deposits headquartered in Texas with over 330 branches. Management expects the deal to close sometime in the second quarter of 2026.