ATIS (Thompson Street-backed) Acquires Technical Inspection Agency USA (TIA USA)

Thompson Street Capital Partners Invests in ATIS

September 25, 2024

Engineering Services

Thompson Street Capital Partners (TSCP) has made a growth investment in ATIS, a St. Louis–headquartered provider of elevator and escalator safety inspections, consulting, and managed services. Terms were not disclosed; TSCP said the capital will support expansion of ATIS’ service offerings, sales and marketing, geographic growth, and strategic add-on acquisitions.

ATIS Acquires M.A.N Elevator Inspections

January 1, 2025

Engineering Services

ATIS, a portfolio company of Thompson Street Capital Partners (TSCP), has acquired M.A.N Elevator Inspections, a Florida-based provider of elevator inspection services. The deal expands ATIS's footprint and inspection capacity across southeastern (and western) Florida; terms were not disclosed.

ATIS Acquires Bayline Lift Technologies

December 23, 2025

Engineering Services

ATIS, a portfolio company of Thompson Street Capital Partners (TSCP), has acquired Bayline Lift Technologies, an independent elevator inspection and consulting firm headquartered in Norfolk, Virginia. The add-on strengthens ATIS's footprint in the Mid-Atlantic and expands its inspection and consulting capabilities for government and private-sector clients.

ATIS Acquires Vermont Elevator Inspection Services (VEIS)

November 13, 2024

Engineering Services

ATIS, a portfolio company of Thompson Street Capital Partners (TSCP), has acquired Vermont Elevator Inspection Services (VEIS). The add-on expands ATIS' geographic footprint into Vermont and strengthens its local inspection and regulatory compliance capabilities; terms were not disclosed.

American Testing and Inspection Services Acquires A Smart Elevator Solution and 1 Able Elevator Inspector

November 18, 2020

Engineering Services

American Testing and Inspection Services (ATIS), a St. Louis–based conveyance management company, has acquired Colorado-based A Smart Elevator Solution, LLC (Littleton) and 1 Able Elevator Inspector, LLC (Wheat Ridge). The acquisitions expand ATIS’s inspection, consulting and conveyance management presence in Colorado and integrate the target teams into ATIS’s regional operations.

ATIS Acquires Kenneth H. Lemp Elevator Consultant, Inc.

October 6, 2020

Engineering Services

American Testing and Inspection Services (ATIS) has acquired Kenneth H. Lemp Elevator Consultant, Inc., expanding ATIS's consulting capabilities to deliver full‑lifecycle elevator and conveyance management services. The deal adds K.H. Lemp's expertise in new elevator construction, modernization design, project management, and maintenance audits to ATIS's existing inspection and conveyance management platform.