Company: LGN
Filing Date: 2025-12-09
Form Type: S-1
Source: 0001193125-25-312729
Chunk: 22

Company: Legence Corp.
Filing Date: 2025-12-09
Form: S-1
Chunk 22
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 FINRA Rule 5121. Accordingly, this offering is being made in compliance with the requirements of FINRA Rule 5121. Pursuant to that rule, the appointment of a “qualified independent underwriter” is not required in connection with this                
 offering. In accordance with FINRA Rule 5121(c), no sales of the shares in this offering will be made to any discretionary account over which any underwriter having a conflict of interest under FINRA Rule 5121 exercises discretion without the prior 
 specific written approval of the account holder.                                                                                                                                                                                                         |

11

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. |

Risks Related to Growth and Acquisitions

| • |     | As a growing company with a relatively limited operating history at our current scale, we face various risks,                                           
 uncertainties, expenses and difficulties. Our business is dependent on our ability to effectively continue to develop, maintain and scale our platform. |

| • |     | We may not be able to achieve expected returns from our growth strategy. |

| • |