- This page is for the former US company and not for the S1 Corporation of Korea, a Samsung Group.
S1 Corporation was an American software development company based in Norcross, Georgia and specializing in payment processing and financial services software for automated teller machines and retail point of sale applications, primarily for banks, retailers and credit unions. S1 Corporation was acquired by a competing payment software company, ACI Worldwide, Inc., during October 2011 for $9.95 per share.
The company acquired the South African firm Mosaic Software during 2004 and acquired internet banking company PM Systems Corporation in March 2010. S1 Corporation attempted to acquire Israeli banking service firm Fundtech Ltd in 2011, however the private equity firm GTCR acquired FundTech, and S1 was acquired by ACI Worldwide instead. The acquisition of S1 by ACI Worldwide was completed following ACI Worldwide's third takeover bid in as many months. The total value of the acquisition was estimated to be worth $515.7 million. James (Chip) S. Mahan III served as chief executive officer (CEO) from 1994, and was succeeded in 2001 by Jaime Ellertson, who served until 2005, after which Mahan was reappointed. Johann Dreyer, originally CEO of Mosaic Software, became S1's last chief executive officer in 2006, serving until S1 was acquired by ACI Worldwide in 2012.
- "P&F Spread Triple Top Breakout – ANDE, CRBC, PZZA, SNDA, SONE". Retirementplannings.org. 28 November 2011.
- "Posera-HDX Limited Announces Completion of Acquisition of Payment Switch Company Cash 'N Go Ltd.". Reuters. 21 December 2011.
- "ACI Reaches Deal to Buy S1 for about $516M". Bloomberg Businessweek. 3 October 2011.
- "ACI Worldwide to Acquire S1 Corporation". Forbes. 3 October 2011.
- "S1 Corporation Agrees to Settle Shareholder Litigation". Bloomberg.com. 25 October 2011.
- "S1 Corporation News". The New York Times.
- "ACI Seals S1 Deal for $516 Mln". Reuters. 3 October 2011.
- "Kodak, Supervalu, Netflix are Big Market Movers". ABC News. 26 July 2011.
- "http://www.bizjournals.com/atlanta/stories/2006/06/05/daily40.html". Jun 9, 2006. External link in
- "S1 Investor Relations - Biography". investor.S1.com. 14 November 2012.
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