Tranche Update on Prosperity Bancshares, Inc. (NYSE:PB)'s Equity Buyback Plan announced on January 17, 2023.

Prosperity Bancshares, Inc. is a regional financial holding company providing personal banking services and investments to consumers and businesses throughout Texas and Oklahoma. The Company's traditional deposit products include certificates of deposit, interest-checking accounts, money market accounts and savings accounts. It also offers digital banking solutions, credit and debit cards, mortgage services, retail brokerage services, trust and wealth management, and treasury management. It operates around 288 full-service banking locations: 65 in the Houston area, including The Woodlands; 30 in the South Texas area including Corpus Christi and Victoria; 62 in the Dallas/Fort Worth area; 22 in the East Texas area; 31 in the Central Texas area including Austin and San Antonio; 49 in the West Texas area including Lubbock, Midland-Odessa, Abilene, Amarillo and Wichita Falls; 15 in the Bryan/College Station area; 6 in the Central Oklahoma area; and 8 in the Tulsa, Oklahoma area.