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ABM

Platform

ABM logo
500+ employees Website
ElectricalHvacOtherPlumbingRefrigeration

Ownership map

Ownership links are documented, evidence-gated edges, shown as reported by their sources. Naming a company is not an accusation against it. See our methodology and legal notes.

Ownership map for ABMrolled up intorolled up intorolled up intoABM: PlatformABMABM Building & Energy Solutions: PlatformABM Building & Energy…ABM Building Services: PlatformABM Building ServicesAirco Commercial Services Inc.: Operating CompanyAirco Commercial Serv…Alpha Mechanical Inc.: Operating CompanyAlpha Mechanical Inc.CTS Services/Facility Support Services: Operating CompanyCSCTS Services/Facility…Calvert-Jones: Operating CompanyCJCalvert-Jones
Operating CompanyPlatform

Ownership

Ownership links are documented, evidence-gated edges, shown as reported by their sources. A verified mark denotes an independently corroborated edge; links shown as reported are drawn as their sources record them and are not independently corroborated. Naming a company is not an accusation against it. See our methodology and legal notes.

Market signals

Acquisition history

Acquisition timeline201220142016201820202022202420262012 · Add-on acquisition → Calvert-Jones2014 · Add-on acquisition → Airco Commercial Services Inc.2014 · Add-on acquisition → Alpha Mechanical Inc.2026 · Majority stake
4 recorded deals, 2012–2026verifiedunverified

Acquisition footprint

US acquired companies by state Alaska: no recorded acquired companies Alabama: no recorded acquired companies Arkansas: no recorded acquired companies Arizona: no recorded acquired companies California: 1 acquired companies Colorado: no recorded acquired companies Connecticut: no recorded acquired companies District of Columbia: 1 acquired companies Delaware: no recorded acquired companies Florida: no recorded acquired companies Georgia: no recorded acquired companies Hawaii: no recorded acquired companies Iowa: no recorded acquired companies Idaho: no recorded acquired companies Illinois: no recorded acquired companies Indiana: no recorded acquired companies Kansas: no recorded acquired companies Kentucky: no recorded acquired companies Louisiana: no recorded acquired companies Massachusetts: no recorded acquired companies Maryland: no recorded acquired companies Maine: no recorded acquired companies Michigan: no recorded acquired companies Minnesota: no recorded acquired companies Missouri: no recorded acquired companies Mississippi: no recorded acquired companies Montana: no recorded acquired companies North Carolina: no recorded acquired companies North Dakota: no recorded acquired companies Nebraska: no recorded acquired companies New Hampshire: no recorded acquired companies New Jersey: no recorded acquired companies New Mexico: no recorded acquired companies Nevada: no recorded acquired companies New York: no recorded acquired companies Ohio: no recorded acquired companies Oklahoma: no recorded acquired companies Oregon: no recorded acquired companies Pennsylvania: no recorded acquired companies Rhode Island: no recorded acquired companies South Carolina: no recorded acquired companies South Dakota: no recorded acquired companies Tennessee: no recorded acquired companies Texas: no recorded acquired companies Utah: no recorded acquired companies Virginia: no recorded acquired companies Vermont: no recorded acquired companies Washington: no recorded acquired companies Wisconsin: no recorded acquired companies West Virginia: no recorded acquired companies Wyoming: no recorded acquired companies District of Columbia: 1 acquired companies DC
  1. 1. California 1
  2. 2. District of Columbia 1
1–4 5–14 15–39 40–79 80+ no recorded acquired companies
Where the brands ABM acquired are headquartered, by US state. A count of targets, not a market-share claim.

Deals

Majority stake Jan 2026

ABM to acquire WGNSTAR for ~$275 million

ABM
$275M reported total consideration · approximateas reported by facilityexecutive.com
Add-on acquisition Aug 2014

ABM acquires HVAC contractor Airco Commercial Services

ABM → Airco Commercial Services Inc.
Add-on acquisition Mar 2014

ABM acquires service business of Alpha Mechanical

ABM → Alpha Mechanical Inc.
Add-on acquisition Nov 2012

ABM acquires HVAC/plumbing/electrical contractor Calvert-Jones in Washington, D.C.

ABM → Calvert-Jones