Prosperity Bancshares Files S-4 for Stellar Merger

Prosperity Bancshares, Inc. filed a Form S-4 registration statement with the SEC on April 3, 2026 in connection with its proposed merger with Stellar Bancorp, Inc. The filing includes registration language under the Securities Act and describes the proposed sale of securities to the public following effectiveness and completion of the merger.

The document lists Prosperity Bancshares’ Houston, Texas address and leadership, and identifies Stellar Bancorp’s Houston, Texas address. It also includes counsel listings and standard merger registration statement cover-page items.