- Union Alarmtronic, LLC is a security systems provider specializing in security systems and services, including access control and video surveillance, as well as intercom systems, integrated security, and alarm systems.
- Mesirow acted as the exclusive financial advisor to Union Alarmtronic LLC on this transaction, highlighting the firm’s continued success in the industrial technology sector.
CHICAGO, Oct. 22, 2026 /PRNewswire/ — Mesirow, an independent, employee-owned financial services firm, today announced it acted as the exclusive financial advisor to Union Alarmtronic, LLC (“Union AlarmTronic” or the “Company”) on its sale to Pye-Barker Fire & Safety, the largest fully integrated and full-service fire protection, life safety and security services provider in the United States.
Headquartered in New Jersey, Union Alarmtronic is a security systems and services company that specializes in the installation, monitoring, maintenance, and integration of alarm systems, video surveillance, access control, fire alarms and intercom systems for residential and commercial clients. The Company highlights decades of industry experience, tens of thousands of security install and monitoring customers, and a dedication to providing customized life safety solutions designed to help protect people, property, and business assets. Union AlarmTronic also offers 24/7 monitored security services with dispatch and communication to law enforcement, as well as integrated smart technologies that allow customers to monitor their property access remotely. Pye-Barker Fire & Safety is a well-recognized national leader in fire protection, life safety and security services.
William Lynch, Managing Director at Mesirow Investment Banking, said, “Union AlarmTronic has built an outstanding reputation for delivering high-quality security and life safety solutions, and Pye-Barker’s commitment to supporting founder-led businesses by investing in long-term growth made it an excellent partner for the Company. We were honored to advise Union AlarmTronic on this transaction and help achieve a successful outcome that benefits both organizations, their employees and their customers.”
Fred Rosenfeld, President of Union AlarmTronic, said, “For more than three decades, Union AlarmTronic has been committed to delivering exceptional security and life safety solutions while building lasting relationships with our customers. As we looked to the future, it was important to find a partner that shares our values, commitment to service and dedication to our employees and customers. We are proud of what we have accomplished and confident that Pye-Barker will continue that legacy while providing additional resources to support future growth. This transaction represents an exciting new chapter for our company.”
“What stood out to us about Union AlarmTronic was not only its impressive business but also the culture and values that have driven its success. The leadership team’s dedication to Union AlarmTronic’s customers and employees matches our own approach, making this a natural partnership,” said Phil Gardner, EVP, M&A at Pye-Barker. “We are proud to welcome the Union AlarmTronic team and support their continued success.”
The sale of Union AlarmTronic marks another successful industrial technology transaction completed by Mesirow Investment Banking. In recent years, the firm has completed more than 350 transactions across its verticals. With deep industry expertise, long-standing client relationships, and a commitment to delivering tailored solutions, Mesirow continues to build a proven track record of highly successful transactions.
About Mesirow
Mesirow is an independent, employee-owned financial services firm founded in 1937. Headquartered in Chicago, with offices around the world, we serve clients through a personal, custom approach to reaching financial goals and acting as a force for social good. With capabilities spanning Private Capital & Currency, Capital Markets & Investment Banking, and Advisory Services, we invest in what matters: our clients, our communities and our culture.
Mesirow has been named one of the Best Places to Work in Chicago by Crain’s Chicago Business multiple times and is one of Barron’s Top 100 RIA firms. To learn more, visit mesirow.com, follow us on LinkedIn and subscribe to Spark, our quarterly newsletter.
About Union Alarmtronic, LLC
Founded in 1989 and headquartered in Roselle, New Jersey, Union Alarmtronic, LLC is a leading regional electronic security and systems integration provider. The company specializes in the custom design, installation, maintenance, and monitoring of comprehensive security solutions, including video surveillance, CCTV, access control, intercom systems, and intrusion detection for both commercial and residential clients. Utilizing a deeply cross-trained technical staff, Union Alarmtronic provides around-the-clock protection alongside specialized app-based safety solutions to help enterprises comply with lone worker and hospitality panic button mandates. For more information, visit www.unionalarmtronic.com.
About Pye-Barker Fire & Safety
As the U.S. leader in fully integrated life safety systems, Pye-Barker Fire & Safety provides complete fire protection and security systems nationwide. With over 250 locations and 9,000 team members, Pye-Barker is Great Place to Work® Certified™ and is also listed on the Inc. 5000. Pye-Barker ranks #3 on the SDM 100 and #7 on the SDM Top Systems Integrators list. Visit pyebarkerfs.com to learn more about our commitment to our team members and the communities we help protect.
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Michael Herley | 203.308.1409
Nothing contained herein constitutes an offer to sell or a solicitation of an offer to buy an interest in any Mesirow investment vehicle(s). Mesirow Financial, Inc. is not affiliated with Union Alarmtronic LLC, Pye-Barker Fire & Safety. Past performance is not indicative of future results. Mesirow refers to Mesirow Financial Holdings, Inc. and its divisions, subsidiaries and affiliates. | Investment Banking services offered through Mesirow Financial, Inc., Member FINRA and SIPC.
Award recognition disclosures: mesirow.com/award-recognition-disclosures
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