Company: LGN
Filing Date: 2025-07-15
Form Type: DRS/A
Source: 0000950123-25-006399
Chunk: 24

Company: Legence Corp.
Filing Date: 2025-07-15
Form: DRS/A
Chunk 24
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 additional shares of Class A Common Stock from the selling stockholder; |

| • |     | the consummation of the Corporate Reorganization in connection with the consummation of this offering; and |

| • |     | the filing of our amended and restated certificate of incorporation and the adoption of our amended and restated 
 bylaws, each in connection with the closing of this offering.                                                    |

14

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

Summary of Risk Factors An investment in our securities involves a high degree of risk. The occurrence of one or more of the events or circumstances described in the section titled “Risk Factors,” alone or in combination with other events or circumstances, may materially adversely affect our business, financial condition and operating results. In that event, the trading price of our securities could decline, and you could lose all or part of your investment. Such risks include, but are not limited to: Risks Related to Business

| • |     | Economic downturns in the markets in which we operate may materially and adversely affect our business because 
 our business is dependent on levels of construction activity.                                                  |

| • |     | If we do not compete and evolve effectively in our target markets, our operating results could be harmed. |

| • |     | Misconduct and errors by our employees, subcontractors, partners or third-party service providers could harm our 
 business.                                                                                                        |

| • |     | Cost overruns, inflation, delays and other risks could significantly impact our results, particularly with 
 respect to fixed-price contracts.                                                                          |

| • |     | A failure to secure new contracts may adversely affect our cash flows and financial results. |

| • |     | If we fail to complete a project in a timely manner, miss a required performance standard or otherwise fail to                                                                   
 adequately perform on a project, then we may incur a loss on that project, which may reduce or eliminate our overall profitability or subject us to liquidated or other damages. |

| • |     | The fact that we outsource various elements of the services we sell and use materials and equipment produced by                                                    
 third parties in our projects subjects us to the business risks of our subcontractors and suppliers, which could have a material adverse impact on our operations. |

| • |     | Our clients often rely on third party financing to pay for their projects, and this capital might not be 
 available on acceptable terms or at all.                                                                 |

|