Company: LGN
Filing Date: 2025-07-15
Form Type: DRS/A
Source: 0000950123-25-006399
Chunk: 139

Company: Legence Corp.
Filing Date: 2025-07-15
Form: DRS/A
Chunk 139
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 contracts. Backlog represents, as of any date of determination, the expected revenue values of the remaining performance obligations under our contracted fixed-price projects. Awarded contracts represents as of any date of determination, the expected revenue values of projects awarded to us following a request for proposals but for which a formal contract has not yet been signed. We only include fixed-price contracts in our backlog and awarded contracts because they have defined revenue values. We do not include cost-plus contracts, which are primarily generated in our Maintenance & Service service line, in our backlog and awarded contracts, because their total revenue values are not known. Historically, cost-plus projects have comprised a relatively small portion of our revenue. We calculate our book-to-billratio by taking our additions to backlog and awarded contracts, excluding additions that were attained through acquisition, for the period, and dividing it by revenue from fixed-price contracts for the same period. A book-to-billratio of 1.0 indicates that we are booking backlog and awarded contracts at the same pace as we are recognizing revenue, suggesting stable revenue in future periods. A book-to-billratio above 1.0 indicates that backlog and awarded contracts are outpacing revenue, which could indicate an increase in revenue in future periods. Conversely, a book-to-billratio below 1.0 indicates that backlog and awarded contracts are trailing revenue, which could indicate a decrease in future revenue. Given that backlog and awarded contracts and book-to-billratio are operational measures and that our methodology for calculating backlog and awarded contracts and book-to-billratio does not meet the definition of a non-GAAPmeasure, as that term is defined by the SEC, a quantitative reconciliation for each is not required nor provided. 98

Confidential Treatment Requested by Legence Corp. Pursuant to 17 C.F.R. Section 200.83 The following tables present our backlog and awarded contracts and book-to-billratio by reportable segment with book-to-bill ratio calculated during the periods noted (dollars in thousands):

| Engineering & Consulting      |     | As of and for the Three 
 Months Ended March 31,  
 2024                    |           |     | 2025 |           |
|:------------------------------|:----|:------------------------|----------:|:----|:-----|----------:|
| Backlog                       |     | $                       |   559,628 |     | $    |   616,302 |
| Awarded contracts             |     |                         |   297,802