Press Releases

Press Releases

<center>Real-time monitoring and management of transaction status, system and resources performance and availability</center>

Sep 15, 2011

<center>Visitors to the ACI Worldwide Stand at Sibos Can Play to Win an iPad2 &#8211; Sibos stand C136</center>

Sep 14, 2011

<center>ACI Commemorates 20 Years of Working with Standard Chartered Bank</center>

Sep 13, 2011

<center>New Product Increases Security and Transforms Usability for Banks and Their Customers</center>

Sep 12, 2011

<center>Innovative Solution Brings Full Business Banking to Tablet Devices</center>

Sep 01, 2011

<center>Exchange Offer Intended to Give S1 Shareholders Direct Voice</center>

Aug 30, 2011

<center>Company Filing Definitive Proxy Statement and Mailing Letter to S1 Shareholders. Urges S1 Shareholders to Vote the BLUE Proxy Card</center>

Aug 25, 2011

<center>ACI&#8217;s Cash and Stock Proposal Provides S1 Shareholders with Immediate Cash Value and Significant Upside Potential</center>

Aug 15, 2011
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Investor contacts

John Kraft, Head of Strategy & Finance
Email: john.kraft@aciworldwide.com

Global headquarters:
ACI Worldwide
6060 Coverntry Drive
Elkhorn, NE 68022