Dennis Byrnes

General Counsel at ACI WORLDWIDE, INC.

63 year

Technology Services

Consumer Services

Finance

Profile

Dennis Patrick Byrnes is currently Chief Executive Officer at S1 Corp.
since 2012.
Mr. Byrnes is also Director at Applied Communications, Inc. U.K.
Holding Ltd. since 2003.
Mr. Byrnes is Chief Legal and Risk Officer at ACI Worldwide, Inc. since 2003.
Former roles include Chief Executive Officer at Official Payments Holdings, Inc., President, Secretary & Director at ACI Payments, Inc., Secretary & Director at ACI Global Ltd., Vice President & Senior Counsel at Bank One Corp.
from 2002 to 2003, General Counsel at Sterling Commerce (America), Inc. from 1996 to 2001, and Attorney at Baker & Hostetler LLP from 1991 to 1996.
Education includes an MBA from Xavier University, an undergraduate degree from Case Western Reserve University, and a graduate degree from Michael E.
Moritz College of Law.

Dennis Byrnes active positions

Companies	Position	Start
ACI WORLDWIDE, INC.	General Counsel	01/06/2003
S1 Corp. S1 Corp. Information Technology ServicesTechnology Services Operates as security solutions company	Chief Executive Officer	12/02/2012
Applied Communications, Inc. U.K. Holding Ltd. Applied Communications, Inc. U.K. Holding Ltd. Packaged SoftwareTechnology Services Develops computer software	Director/Board Member	30/09/2003

All active positions of Dennis Byrnes

Former positions of Dennis Byrnes

Companies	Position	End
Bank One Corp. Bank One Corp. Major BanksFinance National commercial bank	General Counsel	01/06/2003
Sterling Commerce (America), Inc. Sterling Commerce (America), Inc. Packaged SoftwareTechnology Services Provides business integration solutions	General Counsel	01/11/2001
Baker & Hostetler LLP Baker & Hostetler LLP Miscellaneous Commercial ServicesCommercial Services Provides legal services	Corporate Officer/Principal	01/01/1996
ACI Global Ltd. ACI Global Ltd. Packaged SoftwareTechnology Services Develops software	Director/Board Member	-
ACI Payments, Inc. ACI Payments, Inc. Regional BanksFinance Provides payment services	President	-

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Linked companies

Private companies	12
Bank One Corp. Bank One Corp. Major BanksFinance National commercial bank	Finance
ACI Worldwide, Inc. ACI Worldwide, Inc. Packaged SoftwareTechnology Services Installs software products and services for financial institutions	Technology Services
Sterling Commerce (America), Inc. Sterling Commerce (America), Inc. Packaged SoftwareTechnology Services Provides business integration solutions	Technology Services
Official Payments Holdings, Inc. Official Payments Holdings, Inc. Information Technology ServicesTechnology Services Provides biller direct electronic payment solutions	Technology Services
ACI Payments, Inc. ACI Payments, Inc. Regional BanksFinance Provides payment services	Finance
S1 Corp. S1 Corp. Information Technology ServicesTechnology Services Operates as security solutions company	Technology Services
Baker & Hostetler LLP Baker & Hostetler LLP Miscellaneous Commercial ServicesCommercial Services Provides legal services	Commercial Services
Xavier University Xavier University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Case Western Reserve University Case Western Reserve University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Applied Communications, Inc. U.K. Holding Ltd. Applied Communications, Inc. U.K. Holding Ltd. Packaged SoftwareTechnology Services Develops computer software	Technology Services
Michael E. Moritz College of Law Michael E. Moritz College of Law Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
ACI Global Ltd. ACI Global Ltd. Packaged SoftwareTechnology Services Develops software	Technology Services