TORONTO, ONTARIO--(Marketwire - April 4, 2012) - Constellation Software Inc. ("Constellation") (TSX:CSU) announced today that its wholly-owned subsidiary, Gary Jonas Computing Ltd. ("Jonas"), has completed the acquisition of Kestral Computing Pty Ltd. ("Kestral"), a leading provider of software to the Radiology and Laboratory information systems industry in Australia, New Zealand and parts of Asia. Further details of the transaction were disclosed in a press release on March 30, 2012, at which time Jonas entered into a purchase agreement to acquire Kestral.

About Jonas:

Jonas is a leading provider of enterprise management software solutions to a number of vertical markets. Jonas has over 15,000 customers, in over 15 countries worldwide. Jonas' focus is on creating long term relationships with our customers and ensuring we meet and exceed their software and service needs.

About Constellation:

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. The Company acquires, manages and builds vertical market software businesses that provide mission-critical software solutions to address the specific needs of its customers in those industries.

Contact Information:

Constellation Software Inc.
John Billowits
Chief Financial Officer
(416) 861-2279
info@csisoftware.com
www.csisoftware.com