PROSPERITY BANCSHARES INC

The Company, through the Bank, offers a variety of traditional loan and deposit products to its customers, which consist primarily of individual consumers and businesses throughout Texas and Oklahoma. At December 31, 2025, the Bank maintained approximately 804,300 separate deposit accounts including certificates of deposit and 65,700 separate loan accounts. At December 31, 2025, noninterest-bearing demand deposits were 33.2% of the Bank’s total deposits. For the year ended December 31, 2025, the Company’s average cost of funds was 1.61%, and the Company’s average cost of deposits (excluding all borrowings) was 1.37%.

The Company has been an active real estate lender, with commercial real estate (including farmland and multi-family residential); 1-4 family residential (including home equity); and construction, land development and other land loans comprising 29.5%, 37.9% and 12.6%, respectively, of the Company’s total loans as of December 31, 2025. The Company is active in commercial and industrial lending, with commercial loans comprising 10.6% of the Company’s total loans as of December 31, 2025. The Company also offers agricultural loans, loans for automobiles and other consumer durables, home equity loans, debit and credit cards, digital banking solutions, trust and wealth management, retail brokerage services, mortgage services and treasury management. The Company offers businesses a broad array of loan products including term loans, lines of credit and loans for working capital, business expansion and the purchase of equipment and machinery, land development and interim construction loans for builders, and owner-occupied and non-owner occupied commercial real estate loans. The Company has a Warehouse Purchase Program that allows mortgage banking company customers to close one-to-four-family real estate loans in their own name and manage their cash flow needs until the loans are sold to investors.

By offering certificates of deposit, interest checking accounts, money market accounts and savings accounts at competitive rates, the Company gives its depositors a full range of traditional deposit products.

As of December 31, 2025, the Company’s trust department maintained total assets of $2.89 billion, including managed assets of $2.40 billion. The trust department provides trust services in the Company’s various market areas.

The Company’s banking operations are considered by management to be aggregated in one reportable operating segment. For more information about the Company’s segment reporting, refer to Note 1 to the consolidated financial statements.