ATIS Expands its Footprint in the Mid-Atlantic Through Acquisition of Bayline Lift Technologies

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ST. LOUIS--(BUSINESS WIRE)--Dec 23, 2025--

Thompson Street Capital Partners (TSCP), a private equity firm based in St. Louis, today announced the acquisition of Bayline Lift Technologies (Bayline) by ATIS, a TSCP portfolio company and premier provider of elevator and escalator safety inspections, consulting, and managed services across North America.

Bayline provides elevator inspection services throughout the Mid-Atlantic. With the backing of ATIS’ team and resources, Bayline is poised for accelerated growth, while continuing to provide high-quality services to its customers. Terms of the transaction were not disclosed.

About ATIS

ATIS ( www.atis.com ) is one of North America’s largest providers of vertical transportation inspections, consulting, and managed services. With a team of over 200 licensed QEI professionals and expert consultants, ATIS provides unparalleled service across the US and Canada to more than 15,000 customers, promoting the safety and performance of nearly 100,000 elevators and escalators. Renowned for its commitment to excellence and innovation, ATIS provides safety inspections and expert consulting services for a wide range of projects across all sectors, including new construction, modernization, and asset management, while also offering fully managed elevator solutions that include maintenance management and certificate management.

About Thompson Street Capital Partners

Thompson Street Capital Partners ( www.tscp.com ) is a middle-market private equity firm that helps transform already exceptional businesses into market leaders. Based in St. Louis, Missouri, TSCP invests globally in the life sciences and healthcare, software and technology, business and consumer services and products sectors. TSCP partners with management teams to increase value by accelerating growth, both organically and via complementary acquisitions.

View source version on businesswire.com:https://www.businesswire.com/news/home/20251223869845/en/

CONTACT: Gregory

Camaryn Sapienza

[email protected]

(630) 699-9865

KEYWORD: UNITED STATES NORTH AMERICA MISSOURI

INDUSTRY KEYWORD: PROFESSIONAL SERVICES ENGINEERING MANUFACTURING FINANCE CONSTRUCTION & PROPERTY BUILDING SYSTEMS

SOURCE: Thompson Street Capital Partners

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PUB: 12/23/2025 06:30 AM/DISC: 12/23/2025 06:30 AM

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