Company: LGN
Filing Date: 2025-09-02
Form Type: S-1/A
Source: 0001193125-25-193346
Chunk: 212

Company: Legence Corp.
Filing Date: 2025-09-02
Form: S-1/A
Chunk 212
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 such actions.

Amendment and Termination

Our board of directors or the Committee may amend or terminate the 2025 Plan at any time; however, stockholder approval
will be required for any amendment to the extent necessary to comply with applicable law. Stockholder approval will be required to make amendments that (i) increase the aggregate number of shares that may be issued under the 2025 Plan or
(ii) change the classification of individuals eligible to receive awards under the 2025 Plan. The 2025 Plan will remain in effect for a period of 10 years (unless earlier terminated by our board of directors).

IPO Grants

In connection with this
offering, we expect to grant 678,800 restricted stock units and 724,710 stock options under the 2025 Plan to certain employees and non-employee directors (collectively, the “IPO Grants”), including our named executive officers, assuming
an initial public offering price of $27.00 per share, the midpoint of the estimated price range set forth on the cover page of this prospectus, with the actual number of restricted stock units and stock options to be determined at the pricing
of this offering. Each stock option granted as of the pricing of this offering will have an exercise price equal to the initial public offering price in this offering. As of the date of this prospectus, the individual award values for each named
executive officer are not yet known. Each IPO Grant to our named executive officers will consist of 50% of restricted stock units and 50% stock options, both of which will vest in three substantially equal installments on each of the first, second
and third anniversaries of the applicable vesting commencement date, subject generally to continued employment through the applicable vesting date. Each IPO Grant to our non-employee directors will consist of restricted stock units and will fully
vest on the sooner of the first anniversary of the applicable vesting commencement date or the day immediately preceding the Company’s 2026 annual shareholder meeting, subject generally to continued service through the applicable vesting date.

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PRINCIPAL AND SELLING STOCKHOLDERS The following table sets forth certain information regarding the beneficial ownership of our Class A Common Stock and Class B Common Stock as of the date of effectiveness of this registration statement, after giving effect to the Corporate Reorganization described under “Corporate Reorganization” with respect to:

| • |     | each person known to us to beneficially own more than 5% of any class of