Company: LGN
Filing Date: 2025-07-15
Form Type: DRS/A
Source: 0000950123-25-006399
Chunk: 234

Company: Legence Corp.
Filing Date: 2025-07-15
Form: DRS/A
Chunk 234
---
 Owners will hold LGN Units (or LGN Units if the underwriters exercise their option to purchase additional shares of Class A Common Stock in full and after giving effect to the application of the net proceeds therefrom), all of which will be exchangeable for shares of our Class A Common Stock, and shares of Class A Common Stock. “Certain Relationships and Related Party Transactions—Legence Holdings LLC Agreement” contains additional information. The shares of Class A Common Stock we issue upon such exchanges would be “restricted securities” as defined in Rule 144 described below. However, upon the closing of this offering, we intend to enter into a registration rights agreement with certain of the Existing Owners that will require us to register under the Securities Act shares of Class A Common Stock owned by the Existing Owners. “Certain Relationships and Related Party Transactions—Registration Rights Agreement” contains additional information. As a result of the lock-upagreements described below and the provisions of Rule 144 and Rule 701 under the Securities Act, the shares of our Class A Common Stock (excluding the shares to be sold in this offering) that will be available for sale in the public market are as follows:

| • |     | no shares will be eligible for sale on the date of this prospectus or prior to 180 days after the date of this 
 prospectus; and                                                                                                |

| • |     | shares will be eligible for sale upon the expiration of the lock-up agreements beginning 180 days after the date of this prospectus and when permitted under Rule 144 or Rule 701, or otherwise pursuant to an effective registration statement (such number of shares 
 includes the Class A Common Stock that may be issued upon exchange of all or a portion of the LGN Units).                                                                                                                                                              |

160

Confidential Treatment Requested by Legence Corp.

Pursuant to 17 C.F.R. Section 200.83

Lock-upAgreements

We, the Existing Owners and all of our directors and executive officers will agree not to sell any Class A Common Stock or securities
convertible into or exchangeable for shares of Class A Common Stock for a period of 180 days from the date of this prospectus, subject to certain exceptions. The section titled “Underwriting” contains a description of these lock-up agreements.

Rule 144

In general, under Rule 144 as currently in effect, a person (or persons whose shares are aggregated) who is not deemed to have been an
affiliate of ours at any time during the three months preceding a sale, and who