Company: LGN
Filing Date: 2025-08-25
Form Type: S-1/A
Source: 0001193125-25-186788
Chunk: 3

Company: Legence Corp.
Filing Date: 2025-08-25
Form: S-1/A
Chunk 3
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 Statements” contain additional information regarding these risks. i

COMMONLY USED DEFINED TERMS As used in this prospectus, unless the context indicates or otherwise requires, the terms listed below have the following meanings:

| • |     | “Aggregators” refers to, collectively, Legence Parent and Legence Parent II. |

| • |     | “awarded contracts” refers to, as of any date of determination, the expected revenue values of                    
 projects awarded to us following a request for proposals but for which a formal contract has not yet been signed. |

| • |     | “backlog” refers to, as of any date of determination, the expected revenue values of the remaining 
 performance obligations under our contracted fixed-price projects.                                 |

| • |     | “Blackstone” or “Sponsor” refers to investment funds associated with Blackstone Inc. |

| • |     | “Blackstone Fund” refers to BX Refficiency Aggregator LP. |

| • |     | “Blocker Entities” refers to the entities that are taxable as corporations for U.S. federal tax 
 purposes through which certain of the Existing Owners indirectly hold LLC Interests.            |

| • |     | “Class A Common Stock” refers to the Class A common stock of Legence, par value $0.01 per 
 share.                                                                                    |

| • |     | “Class B Common Stock” refers to the Class B common stock of Legence, par value $0.01 per 
 share.                                                                                    |

| • |     | “client” refers to a company whose facility we are performing services in, whether they contract with 
 us directly or through an intermediary that subcontracts to us.                                       |

| • |     | “Common Stock” refers to, collectively, the Class A Common Stock and the Class B Common 
 Stock.                                                                                  |

| • |     | “Corporate Reorganization” has the meaning ascribed to it in “Prospectus 
 Summary—Corporate Reorganization.”                                       |

| • |     | “Credit Facilities” refers to, collectively, the Revolving Credit Facility, the Delayed Draw Term 
 Loan Credit Facility and the Term Loan Credit Facility.                                           |

| • |     | “customer” refers to a company, institution or intermediary, including architects and general                           
 contractors, who purchases services directly from us. If a client contracts directly with us, they are also a customer. |

| • |     | “Delayed Draw Term Loan Credit Facility” refers to the delayed draw term loan facility