Divestiture • Safety/Security

Saothair Capital Partners Acquires AAI

On July 28, 2025, private equity firm Saothair Capital Partners acquired safety/security company AAI from Halma

Acquisition Context
  • This is Saothair Capital Partners’ 1st transaction in the Safety/Security sector.
  • This is Saothair Capital Partners’ 5th transaction in the United States.
  • This is Saothair Capital Partners’ 1st transaction in Michigan.

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M&A Deal Summary

Date July 28, 2025
Target AAI
Sector Safety/Security
Buyer(s) Saothair Capital Partners
Sellers(s) Halma
Deal Type Divestiture

Target Company

AAI

Auburn Hills, Michigan, United States
AAI specializes in wireless smoke, heat, and carbon monoxide (CO) detectors for residential security systems, as well as commercial duct smoke and CO detectors. AAI is based in Auburn Hills, Michigan.
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Buyer Overview 1

DESCRIPTION

Saothair Capital Partners is an operationally focused private equity firm focused on acquiring North American, lower middle-market industrial and manufacturing businesses. Specific areas of interest include paper & packaging, plastics, metals processing, automotive or heavy truck, building products, healthcare-related products, food & beverage, and other niche manufacturing. Saothair Capital Partners was formed in 2019 and is headquartered in Radnor, Pennsylvania.


Deal Context for Buyer #
Overall 5 of 6
Sector: Safety/Security 1 of 1
Type: Divestiture 1 of 2
State: Michigan 1 of 1
Country: United States 5 of 6
Year: 2025 1 of 2
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2024-12-20 T Bailey

Anacortes, Washington, United States

T Bailey provides above-ground industrial tanks, casings, marine pontoons, penstocks, pressure vessels, and other large custom steel solutions. T Bailey was founded in 1991 and is based in Anacortes, Washington.

Buy -
FOLLOWING DEAL
DATE TARGET DEAL TYPE VALUE
2025-10-14 GatesAir

Mason, Ohio, United States

GatesAir provides complete solutions for over-the-air radio and television broadcasting, leveraging wireless spectrum to maximize performance for multichannel, mission-critical services. Powering over-the-air networks worldwide with unparalleled reliability for 100 years, the company's turnkey solutions enable broadcasters to create, transport, and transmit radio and TV content. With customers in more than 185 countries, it leads the industry in innovation and design breakthroughs, improving efficiency and reducing the total cost of ownership with all products designed and assembled in the USA. GatesAir was formed in 1922 and is based in Mason, Ohio.

Buy -

Seller Profile 1

SELLER

Halma

Amersham, United Kingdom

Category Company
Founded 1894
Sector Safety/Security
Employees9,000
Revenue 2.2B GBP (2025)
DESCRIPTION

Halma is a group of technology companies that makes products for hazard detection and life protection. Halma was founded in 1894 and is based in Amersham, United Kingdom.


Deal Context for Seller #
Overall 7 of 7
Sector: Safety/Security 3 of 3
Type: Divestiture 7 of 7
State: Michigan 1 of 1
Country: United States 3 of 3
Year: 2025 1 of 1
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2024-05-01 MK Test Systems

Wellington, United Kingdom

MK Test Systems is a provider of automated electrical test solutions to the aerospace, rail, and oil & gas industries. MK Test provides software and systems used in the production and maintenance of all aircraft in the Airbus range as well as the Boeing 767, 777, and 787 models. MK Test was founded in 1992 and is based in Wellington, England.

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