Press Releases

Press Releases

<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

<center>Easy-to-Access Consultancy Services Add Extra Layer of Support for Users of ACI Proactive Risk Manager</center>

Aug 02, 2011

<center>ACI&#8217;s Proposal Provides S1 Shareholders with Substantial Premium and Immediate Cash Value, Significant Upside Potential Compared to Proposed Transaction with Fundtech</center>

Jul 26, 2011

<center>New unified product improves retailer efficiency and further reduces payments costs</center>

Jul 21, 2011
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Investor Contacts

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

Global Headquarters:
ACI Worldwide
2811 Ponce de Leon Blvd, PH1
Coral Gables, FL 33134