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EX-21.1 5 abm10312024ex211.htm EX-21.1 ABM INDUSTRIES INC /DE/ - Subsidiaries of the Registrant


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.

CompanyWhere Incorporated or Organized
ABM INDUSTRIES INCORPORATEDDelaware
(*)ABM Aviation, Inc.Georgia
ABM International LimitedBermuda
ABM International (Holdings) LtdEngland
ABM Aviation UK LimitedEngland
ABM Group UK LimitedEngland
ABM Facility Services UK LimitedEngland
BRBIBR LimitedEngland
ABM Critical Solutions LimitedEngland
ABM International (Holdings) B.V.Holland
ABM Onsite Services - Canada ULCCanada
Westway Services Holdings (2014) Ltd.England
Westway Services Holdings (2010) Ltd.England
ABM Technical Solutions LimitedEngland
Maybin Support Services (Ireland) LimitedN. Ireland
Momentum Support LimitedIreland
Momentum Property Support Services Ltd.N. Ireland
ABM Building & Energy Services, LLCDelaware
ABM Building Services, LLCDelaware
ABM Electrical Power Services, LLCDelaware
ABM Electrical & Lighting Solutions, Inc.Delaware
ABM Facility Support Services, LLCDelaware
ABM Building & Energy Solutions, LLCDelaware
ABM Building Solutions, LLCDelaware
ABM Electrical Power Solutions, LLCDelaware
ABM Electrical & Lighting Services, LLCDelaware
ABM eMobility, LLCDelaware
ABM eMobility USA, LLCDelaware
ABM Canada Power Services LTDCanada
ABM Franchising Group, LLCDelaware
ABM General Services, Inc.Delaware
ABM Healthcare Support Services, Inc.Michigan
ABM Industrial Services, Inc.Delaware
ABM Industry Groups, LLCDelaware
ABM Texas General Services, Inc.Delaware
Crown Building Maintenance Co.Delaware
CBM MGMT LLCCalifornia
Crown Energy Services, Inc.Delaware


Able Advantage Acquisition, Inc.Delaware
AES MGMT, LLCCalifornia
AbleServe Management CompanyCalifornia
Grade Sub Two, LLCDelaware
GCA Services Group, Inc.Delaware
Associated Facility Management, LLCNevada
GCA Cleaning Specialties, LPTexas
GCA Services Group Mountain States, LPTexas
GCA Services Group of Texas, LPTexas
Associated Facility Ventures, LLCNevada
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 CompanyNew York
Linc International, Inc.Delaware
Linc Facility Services Iraq LLCDelaware
Wassl Al-Iraq Project Services & General Contracting LLPCIraq
Linc Facility Services ME, LLCDelaware
Linc Facility Services Saudi Arabia, LLCSaudi Arabia
Mission Critical Holdings, LLCDelaware
MCS Opco, LLCDelaware
RavenVolt, Inc.Delaware


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