TORONTO, ONTARIO--(Marketwire - Dec. 5, 2012) - Constellation Software Inc. ("Constellation") (TSX:CSU) announced today that it has acquired, through its wholly-owned subsidiary Constellation Homebuilders Systems ("CHS"), 100% of fully diluted shares of Honeywell POMS Corp. ("POMS") from Honeywell International, Inc. POMS is headquartered in Herndon, VA, with approximately 30 full time employees. Terms of the transaction were not disclosed.

"POMS enables Pharmaceutical and Biologics based manufacturing companies to manage their production systems and help them conform to increasing regulatory requirements. The acquisition of POMS will help Constellation establish a footprint in the Manufacturing Execution System software space," said Dexter Salna, President of CHS.

About Constellation Software Inc.

Constellation's common shares are listed on the Toronto Stock Exchange under the symbol "CSU". Constellation Software is an international provider of market leading software and services to a number of industries across both the public and private sectors. Constellation acquires, manages and builds vertical market software businesses that provide mission-critical software solutions. Further information about Constellation may be obtained from its website at [ www.csisoftware.com ].

About POMS:

With headquarters in Herndon, Virginia, POMS was founded in 1987 and bought by Honeywell in 1999. POMS provides web based production management control system, consulting and project management services to large Pharmaceutical and Biologics corporations. POMS systems eliminate errors and minimize incidents to help make products right the first time and reduce compliance efforts.

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