Perseus Finalizes Acquisition of Market Leader Business from Zillow Group

Toronto, Canada – September 30, 2015
Further to its previous press release of September 3, 2015 in connection with its entering into a definitive agreement to acquire the Market Leader business from Zillow Group, Inc., Constellation Software Inc. (“Constellation”)(TSX: CSU) today announced its Perseus division (“Perseus”) has met the closing conditions and finalized the acquisition of the Market Leader business.

About Constellation Software Inc.

Constellation Software acquires, manages and builds vertical market software businesses that provide mission-critical software solutions.

About Perseus Division

The Perseus division is a provider of software solutions to a number of vertical markets. As an operating group of Constellation Software Inc., Perseus acquires, manages, and builds software businesses which provide specialized, mission-critical software solutions. Perseus companies seek to become leaders in their markets by improving their operations, growing through organic initiatives, and seeking acquisitions that can strengthen their market position.