Thompson Street Capital Partners Portfolio Company KJA Acquires Vinspec

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 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.

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 Soberman Engineering via KJA to Expand Toronto Footprint

March 10, 2026

Consulting

ATIS, through its Canadian subsidiary KJA, acquired Soberman Engineering to expand its presence in Toronto. The deal strengthens KJA’s capabilities in vertical transportation consulting—particularly new construction advisory—while maintaining Soberman’s independent client-focused approach. Financial terms were not disclosed.

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

September 15, 2025

Professional Services

ATIS, a St. Louis-based provider of elevator and escalator inspections and consulting (backed by Thompson Street Capital Partners), has acquired Technical Inspection Agency USA (TIA USA), a Las Vegas–headquartered provider of vertical transportation inspections and consulting serving Nevada and Arizona. The deal expands ATIS’ national footprint and technical capabilities in complex vertical transportation systems; 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.