Chicago, Illinois, USA – Vertus Group, a Division of Jonas Software, is thrilled to announce the acquisition of Cornerstone Billing Solutions (“Cornerstone”), a trusted leader in cloud-based billing and account management solutions for the Alarm and Security Industry.
“Cornerstone is an excellent addition to our portfolio,” said Jim Fedigan, Group CEO of Vertus. “I look forward to seeing them continue to grow within our ecosystem while maintaining their focus on user-friendly, powerful software and exceptional customer support.”
Cornerstone will continue to operate independently, preserving its culture and commitment to helping security alarm dealers streamline account management.
“We are incredibly excited to join the Vertus Group,” said Maria Demopoulos, President of Cornerstone. “This new chapter will empower us to grow and improve our platform, bringing even greater value to the alarm and life safety industry.”
This acquisition marks Vertus Group’s entry into its seventh vertical: Security Solutions. It is the third new vertical added since the portfolio’s rebranding in late 2023 and underscores Vertus Group’s focus on expanding into new vertical markets.
“We are confident that Vertus Group’s ‘buy-and-hold forever’ philosophy and commitment to preserving our culture will allow Cornerstone to thrive,” added Demopoulos. “It gives us the foundation to continue delivering user-friendly software and exceptional customer support for years to come.”
About Cornerstone Billing Solutions:
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From a modest beginning in 1999 with just 1,000 subscriber accounts, Cornerstone has proven that its user-friendly software and first-class service are well-aligned with the market. Cornerstone’s security alarm dealers have added more than 250,000 accounts to their system
since the company moved to the cloud in early 2001. That success has established Cornerstone as the leading provider of both comprehensive billing services and powerful account management for the security and alarm industry. For more information on their solutions, visit https://alarmbills.com/
About Vertus Group:

Vertus Group owns and operates independently managed software brands across seven distinct verticals, offering them market-leading strategic guidance and unlimited growth opportunities. As a portfolio of Jonas Software and Constellation Software Inc. (TSX:CSU), Vertus Group employs the same buy-and-hold forever approach to acquisitions as its parent organizations. The group’s primary goal is to acquire high-performing vertical market software businesses while preserving the culture and legacies that have helped make these companies successful.
Learn more about Vertus Group’s acquisition process: Being Acquired
About Jonas Software:
Jonas Software operates over 175+ independently managed software brands around the world, providing them with the strategic guidance and financial security required to be leaders in their respective markets. From its roots formed in the construction and club management markets, Jonas Software’s reach has grown extensively within the fitness, membership, hospitality, and industrial verticals. Today, Jonas Software is proud to supply industry-leading enterprise management software and related services to more than 80,000 customers in over 40+ vertical markets.
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