TORONTO, ON – October 15, 2025 – Constellation Software Inc. (“Constellation”) (TSX: CSU) today announced that its Harris operating group has entered into an agreement to acquire TECVIA Holding GmbH. Completion of the acquisition remains subject to closing conditions.

About Constellation:

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

For more information, contact:

Constellation Software Inc.

Jamal Baksh

Chief Financial Officer

Tel: (416) 861-9677

jbaksh@csisoftware.com

www.www.csisoftware.com

About Constellation Software Inc.

Constellation Software acquires, manages and builds vertical market software businesses.

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