Company: LGN
Filing Date: 2025-09-02
Form Type: S-1/A
Source: 0001193125-25-193346
Chunk: 241

Company: Legence Corp.
Filing Date: 2025-09-02
Form: S-1/A
Chunk 241
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 (“Rule 701”), which rules are summarized below. In addition, subject to certain limitations and exceptions, pursuant to the terms of the Exchange Agreement and the Legence Holdings LLC Agreement, the LGN Unit Holders will each have the right to exchange all or a portion of their LGN Units, along with a corresponding number of shares of Class B Common Stock, for Class A Common Stock at an exchange ratio of one share of Class A Common Stock for each LGN Unit (and corresponding share of Class B Common Stock) exchanged, subject to conversion rate adjustments for stock splits, stock dividends and reclassifications or, at our election, an equivalent amount of cash. “Certain Relationships and Related Party Transactions—Exchange Agreement” contains additional information. Upon consummation of this offering and related Corporate Reorganization, the Existing Owners will hold 46,704,823 LGN Units (or 45,497,015 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 28,998,880 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                                                                                                |

| • |     | 75,703,703 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 |

172

| pursuant to an