Company: LGN
Filing Date: 2025-12-09
Form Type: S-1
Source: 0001193125-25-312729
Chunk: 126

Company: Legence Corp.
Filing Date: 2025-12-09
Form: S-1
Chunk 126
---
 as reported under GAAP. Additionally, we do not consider our non-GAAPfinancial measures superior to, or a substitute for, the equivalent measures calculated and presented in accordance with GAAP. Some of the limitations are that such measures:

| • |     | may exclude the recurring expenses of depreciation and amortization of property and equipment and definite-lived 
 intangible assets and the assets being depreciated and amortized may have to be replaced in the future;          |

| • |     | do not reflect changes in our working capital needs; |

| • |     | do not reflect the interest (income) expense on our indebtedness; or |

| • |     | do not reflect the income tax (benefit) provision we are required to make. |

In order to evaluate our business, we encourage you to review the financial statements included elsewhere in this prospectus, and not rely on a single financial measure to evaluate our business. 82

The following table provides a reconciliation of our Net income (loss), the most directly comparable financial measure presented in accordance with GAAP, to Adjusted EBITDA, and a calculation of Adjusted EBITDA margin for the periods presented herein (dollars in thousands):

|                                                                   |     | 2024 | For the Three 
  Months Ended 
 September 30, |    |     | 2025 |        |   |     | 2024 | For the Nine Months 
 Ended September 30, |    |     | 2025 |         |    |
|:------------------------------------------------------------------|:----|:-----|--------------:|:---|:----|:-----|-------:|:--|:----|:-----|--------------------:|:---|:----|:-----|--------:|:---|
| Net income (loss)                                                 |     | $    |          (676 | )  |     | $    |    379 |   |     | $    |              (9,443 | )  |     | $    | (22,629 | )  |
| Interest expense                                                  |     |      |        23,707 |    |     |      | 28,183 |   |     |      |              65,392 |    |     |      |  88,228 |    |
| Interest income                                                   |     |      |          (523 | )  |     |      | (1,069 | ) |     |      |              (4,356 | )  |