Company: LGN
Filing Date: 2025-02-14
Form Type: DRS
Source: 0000950123-25-002471
Chunk: 284

Company: Legence Corp.
Filing Date: 2025-02-14
Form: DRS
Chunk 284
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 424(b)(1) or (4) or 497(h) under the Securities Act shall be deemed to be part of 
 this registration statement as of the time it was declared effective.                                                                                                                                                                               |

| (2) | For the purpose of determining any liability under the Securities Act, each post-effective amendment that                                                                                                                                   
 contains a form of prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. |

II-4

Confidential Treatment Requested by Legence Corp. Pursuant to 17 C.F.R. Section 200.83 SIGNATURES Pursuant to the requirements of the Securities Act of 1933, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of San Jose, State of California, on , 2025.

| By: |     |                                      |
|     |     | Jeffrey Sprau                        |
|     |     | Chief Executive Officer and Director |

Each person whose signature appears below appoints Jeffrey Sprau and Stephen Butz, and each of them, any of whom may act without the joinder of the other, as his or her true and lawful attorneys in fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments (including post effective amendments) to this registration statement and any registration statement (including any amendment thereto) for this offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act, and to file the same, with all exhibits thereto, and all other documents in connection therewith, with the SEC, granting unto said attorneys in fact and agents full power and authority to do and perform each and every act and thing requisite and necessary to be done, as fully to all intents and purposes as he or she might or would do in person, hereby ratifying and confirming all that said attorneys in fact and agents or any of them or their or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof. Pursuant to the requirements of the Securities Act, this registration statement has been signed below by the following persons in the capacities and the dates indicated.

| Signature               |     | Title                                             |     |   Date |
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