PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® David Zalman

Prosperity Bank Plaza Chairman and Chief Executive Officer
4295 San Felipe 281.269.7199
Houston, Texas 77027 david.zalman@prosperitybankusa.com

FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® INVITES YOU TO JOIN ITS FOURTH QUARTER 2013 EARNINGS CONFERENCE CALL ON THE WEB

HOUSTON, January 7, 2014. In conjunction with Prosperity Bancshares, Inc.® (NYSE: PB) Fourth Quarter 2013 Earnings Announcement, scheduled for before the market opens on Friday, January 24, 2014, you are invited to listen to its conference call that will be broadcast live over the Internet at 10:30 AM, Eastern Time (9:30 AM, Central Time) on that day. Participants will include David Zalman, Chairman and Chief Executive Officer; Tim Timanus, Vice Chairman; and David Hollaway, CPA, Chief Financial Officer.
What: Prosperity Bancshares, Inc.® Fourth Quarter 2013 Earnings Announcement
When: Friday, January 24, 2014 9:30 AM (Central Time)
Where: www.prosperitybankusa.comon the Investor Relations page
How: Live over the Internet -- Simply log on to the web at the address above or call

866-952-1906, the reference code is PBUS

Contact: David Zalman, Chairman and Chief Executive Officer at (281) 269-7199 or david.zalman@prosperitybankusa.com
If you are unable to participate during the live webcast, the call will be archived on the website at http://www.prosperitybankusa.comon the Investor Relations page. To access the replay, click on the conference call section and follow the instructions.

Prosperity Bancshares, Inc.®

Prosperity Bancshares, Inc.® is a Houston, Texas based regional financial holding company, formed in 1983 with $16.1 billion in assets. Operating under a community banking philosophy and seeking to develop broad customer relationships based on service and convenience, Prosperity offers a variety of traditional loan and deposit products to its customers, which consist primarily of small and medium sized businesses and consumers. In addition to established banking products, Prosperity offers a complete line of services including: Internet Banking services at http://www.prosperitybankusa.com, Retail Brokerage Services, MasterMoney Debit Cards, Credit Cards, 24 hour voice response banking, Trust and Wealth Management and Mobile Banking.
Prosperity currently operates 238 full service banking locations; 63 in the Houston area; 26 in the South Texas area including Corpus Christi and Victoria; 35 in the Dallas/Fort Worth area; 22 in the East Texas area; 36 in the Central Texas area including Austin and San Antonio; 34 in the West Texas area including Lubbock, Midland/Odessa and Abilene; 16 in the Bryan/College Station area; and 6 in the Central Oklahoma area.
In connection with the proposed merger of F&M Bancorporation Inc. into Prosperity Bancshares, Prosperity Bancshares has filed with the Securities and Exchange Commission a registration statement on Form S-4 to register the shares of Prosperity's common stock to be issued to the shareholders of F&M Bancorporation. The registration statement includes a proxy statement/prospectus which will be sent to the shareholders of F&M Bancorporation seeking their approval of the proposed transaction.
WE URGE INVESTORS AND SECURITY HOLDERS TO READ THE REGISTRATION STATEMENT ON FORM S-4, THE PROXY STATEMENT/PROSPECTUS INCLUDED WITHIN THE REGISTRATION STATEMENT ON FORM S-4 AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION IN CONNECTION WITH THE PROPOSED TRANSACTION BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT PROSPERITY, F&M BANCORPORATION AND THE PROPOSED TRANSACTION.
Investors and security holders may obtain free copies of these documents through the website maintained by the Securities and Exchange Commission at http://www.sec.gov. Documents filed with the SEC by Prosperity will be available free of charge by directing a request by telephone or mail to Prosperity Bancshares, Inc., Prosperity Bank Plaza, 4295 San Felipe, Houston, Texas
77027 Attn: Investor Relations. Prosperity's telephone number is (281) 269-7199.
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"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: This release contains, and the remarks by Prosperity's management on the conference call may contain, forward-looking statements within the meaning of the securities laws that are based on current expectations, assumptions, estimates and projections about Prosperity and its subsidiaries. These forward-looking

statements are not guarantees of future performance and are subject to risks and uncertainties, many of which are outside of Prosperity's control, which may cause actual results to differ materially from those expressed or implied by the forward-looking statements. These risks and uncertainties include but are not limited to whether Prosperity can: successfully identify acquisition targets and integrate the businesses of acquired companies and banks; continue to sustain its current internal growth rate or total growth rate; provide products and services that appeal to its customers; continue to have access to debt and equity capital markets; and achieve its sales objectives. Other risks include, but are not limited to: the possibility that credit quality could deteriorate; actions of competitors; changes in laws and regulations (including changes in governmental interpretations of regulations and changes in accounting standards); a deterioration or downgrade in the credit quality and credit agency ratings of the securities in Prosperity's securities portfolio;

customer and consumer demand, including customer and consumer response to marketing; effectiveness of spending, investments or programs; fluctuations in the cost and availability of supply chain resources; economic conditions, including currency rate fluctuations and interest rate fluctuations; and weather. These and various other factors are discussed in Prosperity's Annual Report on Form 10-K for the year ended December 31, 2012 and other reports and statements Prosperity has filed with the SEC. Copies of the SEC filings for Prosperity Bancshares® may be downloaded from the Internet at no charge from http:/ / www.prosperitybankusa.com.
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