NEW YORK--(BUSINESS WIRE)--Jan 28, 2026-- Halper Sadeh LLC, an investor rights law firm, is investigating whether the sale of Stellar Bancorp, Inc. (NYSE: STEL) to Prosperity Bancshares, Inc. for 0.3803 shares of Prosperity common stock and $11.36 in cash for each share of Stellar common stock is fair to Stellar shareholders. Halper Sadeh encourages Stellar shareholders to click here to learn more about their legal rights and options or contact Daniel Sadeh or Zachary Halper at (212) 763-0060 or [email protected] or [email protected]. The investigation concerns whether Stellar and its board of directors violated the federal securities laws and/or breached their fiduciary duties to shareholders by failing to, among other things: (1) obtain the best possible consideration for Stellar shareholders; (2) determine whether Prosperity is underpaying for Stellar; and (3) disclose all material information necessary for Stellar shareholders to adequately assess and value the merger consideration.