Company: LGN
Filing Date: 2025-04-30
Form Type: DRS/A
Source: 0000950123-25-003868
Chunk: 118

Company: Legence Corp.
Filing Date: 2025-04-30
Form: DRS/A
Chunk 118
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 commercial and retail. |

| (6) | Includes facilities owned or operated by state and municipal government agencies to the extent not otherwise 
 included in the education client end market.                                                                 |

| (7) | Includes a variety of other industries such as precision manufacturing, aerospace and defense, energy,                                                                                 
 agriculture, multi-family, entertainment and hospitality, among others, as well as the federal government. Revenues from the federal government were less than 2% of revenues in 2024. |

Business Segments We operate through two segments: Engineering & Consulting and Installation & Maintenance. Engineering & Consulting Our Engineering & Consulting segment designs HVAC and other MEP systems for buildings, develops strategies to help reduce energy usage and make buildings more sustainable and provides program and project management services for clients’ installation and retrofit projects. Our Engineering & Consulting segment has two principal service offerings:

| • |     | Engineering & Design. We provide planning, design and engineering services for HVAC, process                                                                                                                                                  
 piping and other MEP systems in both new and existing buildings. We also develop strategies for building owners and operators to help reduce their utility consumption and make their operations more sustainable and resilient. We generated 
 approximately 58% of our 2024 Engineering & Consulting segment revenues from selling Engineering & Design services.                                                                                                                           |

77

Confidential Treatment Requested by Legence Corp. Pursuant to 17 C.F.R. Section 200.83

| • |     | Program & Project Management. We provide comprehensive program and project management services,                                                                                                                                                           
 including facility condition and operational assessments, space utilization and capacity analyses, funding source identification and construction management. For certain clients, we provide design-build services through ESPCs for building retrofits. 
 Under ESPC contracts, financing sources provide the funds required to pay us for the upgrades and receive a portion of the client’s energy savings to recoup their investment and generate a return. We generated approximately 42% of our 2024           
 Engineering & Consulting segment revenues from selling Program & Project Management services.                                                                                                                                                             |

Installation & Maintenance Our Installation & Maintenance segment fabricates and installs HVAC systems, process piping and other MEP systems in new and existing industrial, commercial and institutional buildings and provides ongoing preventative and corrective maintenance services for those systems. Our Installation & Maintenance segment has two principal service offerings:

| • |     | Installation & Fabrication. We provide HVAC, electrical, plumbing, process and                                                                                                                                                                        
 control system installations, refurbishments and renovations in technically demanding new and existing buildings. We perform both “design-build” and “plan and