SAN ANTONIO, Oct. 7 /PRNewswire-FirstCall/ -- Cullen/Frost Bankers, Inc. will host a conference call on Wednesday, October 21, 2009 to discuss third quarter 2009 earnings.

(Logo: http://www.newscom.com/cgi-bin/prnh/20030109/CFRLOGO)

Earnings Release: The earnings release for Cullen/Frost Bankers, Inc. will be available at approximately 8:00 a.m. Central Time (CT) on the internet at http://www.frostbank.com/ or via fax by request.

Conference Call and Live Webcast: The conference call will begin at 10:00 a.m. CT (11:00 a.m. Eastern) and will be hosted by Dick Evans, Chairman and CEO, Phil Green, Group Executive Vice President and CFO and Greg Parker, Executive Vice President and Director of Investor Relations.

Following the prepared remarks there will be a question and answer session for the analyst community. Media and other interested individuals are invited to listen to the call at the following number:

Telephone Number Domestic: 800-944-6430

There will be a live webcast of the call. To access the webcast, go to http://www.frostbank.com/, click on About Frost, then click Investor Relations.

Conference Call Playback and Webcast Archive: Those unable to listen to the conference call live will be able to hear a digital playback of the conference call that will be available after

2:00 p.m. CT until midnight Sunday, October 25, 2009. Telephone Numbers for Playback Toll Free: 800-642-1687 Conference ID# 34963885 International: 706-645-9291

The webcast will be archived and available for playback after 2:00 p.m. CT. To listen to the webcast log on to: http://www.frostbank.com/, click on About Frost, then click Investor Relations.

It is recommended that those wishing to dial into the conference call do so approximately 5 to 10 minutes prior to the call to ensure a more efficient registration process. For further information contact Greg Parker, Executive Vice President and Director of Investor Relations at (210) 220-5632.

Cullen/Frost Bankers, Inc.

CONTACT: Greg Parker, Executive Vice President and Director of Investor
Relations of Cullen/Frost Bankers, Inc., +1-210-220-5632

Web Site: http://www.frostbank.com/