EX-21.1 5 abm10312024ex211.htm EX-21.1
Exhibit 21.1
SUBSIDIARIES OF ABM INDUSTRIES INCORPORATED
The following is a list of subsidiaries of the company as of October 31, 2024, omitting subsidiaries which, considered in the aggregate, would not constitute a significant subsidiary.

Company | Where Incorporated or Organized
ABM INDUSTRIES INCORPORATED | Delaware
(*) | ABM Aviation, Inc. | Georgia
| ABM International Limited | Bermuda
| ABM International (Holdings) Ltd | England
| ABM Aviation UK Limited | England
| ABM Group UK Limited | England
| ABM Facility Services UK Limited | England
| BRBIBR Limited | England
| ABM Critical Solutions Limited | England
| ABM International (Holdings) B.V. | Holland
| ABM Onsite Services - Canada ULC | Canada
| Westway Services Holdings (2014) Ltd. | England
| Westway Services Holdings (2010) Ltd. | England
| ABM Technical Solutions Limited | England
| Maybin Support Services (Ireland) Limited | N. Ireland
| Momentum Support Limited | Ireland
| Momentum Property Support Services Ltd. | N. Ireland
| ABM Building & Energy Services, LLC | Delaware
| ABM Building Services, LLC | Delaware
| ABM Electrical Power Services, LLC | Delaware
| ABM Electrical & Lighting Solutions, Inc. | Delaware
| ABM Facility Support Services, LLC | Delaware
| ABM Building & Energy Solutions, LLC | Delaware
| ABM Building Solutions, LLC | Delaware
| ABM Electrical Power Solutions, LLC | Delaware
| ABM Electrical & Lighting Services, LLC | Delaware
| ABM eMobility, LLC | Delaware
| ABM eMobility USA, LLC | Delaware
| ABM Canada Power Services LTD | Canada
| ABM Franchising Group, LLC | Delaware
| ABM General Services, Inc. | Delaware
| ABM Healthcare Support Services, Inc. | Michigan
| ABM Industrial Services, Inc. | Delaware
| ABM Industry Groups, LLC | Delaware
| ABM Texas General Services, Inc. | Delaware
| Crown Building Maintenance Co. | Delaware
| CBM MGMT LLC | California
| Crown Energy Services, Inc. | Delaware

| Able Advantage Acquisition, Inc. | Delaware
| AES MGMT, LLC | California
| AbleServe Management Company | California
| Grade Sub Two, LLC | Delaware
| GCA Services Group, Inc. | Delaware
| Associated Facility Management, LLC | Nevada
| GCA Cleaning Specialties, LP | Texas
| GCA Services Group Mountain States, LP | Texas
| GCA Services Group of Texas, LP | Texas
| Associated Facility Ventures, LLC | Nevada
| ABM Education Services, Inc. | Tennessee
| GCA Education Services Central States, Inc. | Illinois
| GCA Education Services of New England, Inc. | Delaware
| GCA K12 Education Services, Inc. | Texas
| GCA Nuclear Facility Services, Inc. | Texas
| GCA Production Services, Inc. | Delaware
| GCA Services Group of California, Inc. | California
| GCA Services Group of Colorado, Inc. | Colorado
| GCA Services Group of North Carolina, Inc. | North Carolina
| GCA Services Group of Northwestern States, Inc. | Washington
| GCA Staffing Services, Inc. | Delaware
| National Building Maintenance Corp. | Delaware
| IFM Assurance Company | New York
| Linc International, Inc. | Delaware
| Linc Facility Services Iraq LLC | Delaware
| Wassl Al-Iraq Project Services & General Contracting LLPC | Iraq
| Linc Facility Services ME, LLC | Delaware
| Linc Facility Services Saudi Arabia, LLC | Saudi Arabia
| Mission Critical Holdings, LLC | Delaware
| MCS Opco, LLC | Delaware
| RavenVolt, Inc. | Delaware

*Subsidiary relationship to Company or to subsidiary parents shown by progressive indentation.