Allied Universal
The Firm
Allied Universal describes itself as a leading security and facility services company operating in more than a hundred countries with a global workforce of roughly 770,000 people, and traces its history back more than sixty years to a 1957 founding. It runs under the Allied Universal brand in North America and the G4S brand internationally, and staffs security officers at a scale no owner-operator approaches.
Growth by acquisition is explicit strategy. By its own account it completed seven transactions in 2025 with combined annual revenues near $695 million. Its own newsroom dates the guarding additions among them: Mulligan Security in New York and IPS-Patriot in New Mexico, both officer-staffing companies folded into its regional operations. In its own words it buys to expand geographic footprint and add capabilities in key service categories.
For a security-guard searcher the read is sober. Allied Universal is rarely bidding on the small contract book an individual buys, but it sets the ceiling in the trade. It is also the most visible exit, since a well-run regional guarding company with sticky commercial accounts is exactly what it acquires to enter or deepen a market. Anyone meeting the company should know the officer-staffing model it runs at national scale and that its offer competes on purchasing power and technology, which is where an owner-operator's local relationships hold the edge.
Read again in September 2026: two purchases since the third-quarter summary, neither a guard company, an Ontario investigations firm in May and an electronic monitoring company in July, and no summary release for the quarters since. It sold a majority of its access control technology business in December 2025 and kept a minority. The two newsrooms opened that evening added eleven purchases, four of them named only in the firm's own tabulations with a closing month and no release. Five international ones from Colombia to Australia are a count here, and the firm's own figures are thirteen purchases in 2022 and twenty-four across 2022 to 2024.
What It Buys
Irvine, California. Regional security-guard companies bought into a continent-spanning guarding network, the giant a security-guard searcher meets as the market's ceiling-setting bidder and eventual exit.
Selling to them one day, or watching them as the other bidder? Track them in the Contact Book so the relationship has a next-touch date.
Confirmed Deals
15 deals traced to announcements by Allied Universal, 2023 to 2026, newest first. Firms that announce every deal show a fuller run here than firms that report acquisitions as quarterly counts, so read this as the evidence that clears the bar rather than as the firm's whole record.
- Sentinel Offender Services · July 6, 2026
A United States electronic monitoring company; not a guard company, so profile context only.
- Investigative Risk Management (IRM) · May 27, 2026
An Ontario, Canada workplace and insurance claims investigations firm; not a guard company.
- IPS-Patriot · September 11, 2025
A New Mexico security guarding company, folded into the national branch network.
- Mulligan Security · August 13, 2025
Security guarding company in New York, including MG Security Services.
- CDA, Inc. d/b/a MaxSent · May 2025
A government guarding contractor closed in May 2025, named with no release of its own in the firm's tabulation.
- Pinnacle Security · April 14, 2025
An Atlanta and New Orleans guarding company, closed in January 2025 by the firm's own table.
- CI Security Specialists, Inc. · April 2025
An events security company closed in April 2025, named with no release of its own in the firm's tabulation.
- Diversified Maintenance Systems, LLC · March 2025
A facilities management company closed in March 2025, named in the firm's tabulation; not guarding.
- Unified Command · December 18, 2024
An event safety and security technology provider, closed in May 2024 by the firm's table; technology, not guarding.
- Brosnan · December 2024
A guarding company closed in December 2024, named with no release of its own in the firm's tabulation.
- Briger Security · December 2024
A K-12 security and traffic management company closed in December 2024, named with no release of its own.
- Nordic Security Services · December 7, 2023
An Orange County, California guarding company, the firm's hundredth purchase by its own count.
- Star Protection Services · December 7, 2023
A Seattle guarding company of six branches, the firm's 101st purchase by its own count.
- Elite Tactical Security Solutions · April 11, 2023
A Las Vegas guarding company with ten canine detection teams and forty officers.
- Landmark Event Staffing Services · March 13, 2023
A national event security and guest services company.