Interim condensed consolidated financial statements — The interim condensed consolidated financial statements for the three and nine months ended September 30, 2024 and 2023 have been prepared in accordance with Rule 10-01 of Regulation S-X of the Securities Exchange Act of 1934, as amended. As such, certain disclosures, which would substantially duplicate the disclosures contained in our Annual Report on Form 10-K, filed on February 27, 2024, which contains our audited consolidated financial statements for the year ended December 31, 2023, have been omitted.

This Form 10-Q should be read in conjunction with our most recent Annual Report on Form 10-K. The interim financial information is unaudited. In the opinion of management, the interim information includes all adjustments (consisting of normal recurring adjustments) necessary for the fair presentation of the interim financial information.

Reclassification — Certain previously reported amounts have been reclassified to conform to the current year presentation.

Restricted cash — Restricted cash consists primarily of cash balances that are restricted as to withdrawal or usage and contract retention payments made by customers into escrow bank accounts and are included in prepaid expenses and other current assets in our Condensed Consolidated Balance Sheets. Escrow cash accounts are released to us by customers as projects are completed in accordance with contract terms. The following tables provide a reconciliation of cash, cash equivalents and restricted cash reported within the Condensed Consolidated Balance Sheets to the totals of such amounts shown in the Condensed Consolidated Statements of Cash Flows (in thousands):



	December 31,
	2023		2022
Cash and cash equivalents	$	217,778	$	248,692
Restricted cash included in prepaid expense and other current assets		5,764		10,299
Total cash, cash equivalents and restricted cash shown in the Condensed Consolidated Statements of Cash Flows	$	223,542	$	258,991

Accounts Receivable Securitization Facility — In June 2023, we entered into an Accounts Receivable Securitization Facility (“the Facility”) with PNC Bank, National Association (“PNC”) to improve cash flows from trade accounts receivable. In July 2024, we renewed the Facility for a two-year term, added Regions Bank (“Regions”) to the Facility, and increased the maximum purchase commitment to $150.0 million, at any one time. Fees associated with the Facility for the three and nine months ended September 30, 2024, were $1.3 million and $4.0 million, respectively, and are included in interest expense in the Condensed Consolidated Statements of Income. Fees associated with the Facility for the three and nine months ended September 30, 2023, were $0.5 million and are included in interest expense in the Condensed Consolidated Statements of Income.

Under the Facility, certain of our designated subsidiaries may sell their trade accounts receivable as they are originated to a wholly owned bankruptcy remote Special Purpose Entity (“SPE”) created specifically for this purpose. We control and, therefore, consolidate the SPE in our consolidated financial statements. The SPE transfers ownership and control of qualifying accounts receivable to PNC and Regions up to the maximum purchase commitment. We and our related subsidiaries have no continuing involvement in the transferred accounts receivable, other than collection and administrative responsibilities, and, once sold, the accounts receivable are no longer available to satisfy our creditors or our related subsidiaries. We account for accounts receivable sold to the banking counterparty as a sale of financial assets and derecognize the trade accounts receivable from our Condensed Consolidated Balance Sheets.

The total outstanding balance of trade accounts receivable that have been sold and derecognized is $75.0 million as of September 30, 2024. The SPE owned $232.1 million of trade accounts receivable as of September 30, 2024, which are included in Accounts receivable, net on the Condensed Consolidated Balance Sheets. For the nine months ended September 30, 2024 and 2023, we received $10.0 million and $65.0 million, respectively, in cash proceeds from the Facility, and repaid $10.0 million and $0, respectively, to the Facility, which are included in cash from operating activities in the Condensed Consolidated Statements of Cash Flows. As of September 30, 2024, we had $75.0 million available capacity under the Facility.

Customer concentration — We operate in multiple industry sectors encompassing the construction of commercial, industrial and public works infrastructure assets primarily throughout the United States. Typically, the top ten customers in any one calendar year generate revenue that is approximately 35% to 45% of total revenue; however, the companies that comprise the top ten customers vary from year to year.

For the three and nine months ended September 30, 2024, approximately 41.9% and 40.9%, respectively, of total revenue was generated from our top ten customers and no one customer accounted for more than 10% of our total revenue.

For the three and nine months ended September 30, 2023, approximately 44.1% and 38.2%, respectively, of total revenue was generated from our top ten customers and no one customer accounted for more than 10% of our total revenue.

In November 2023, the FASB issued ASU No. 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” which changes the accounting and reporting of segment disclosure requirements primarily through enhanced disclosure about significant segment expenses in accordance with FASB Accounting Standards Codification 280, Segment Reporting. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments should be applied prospectively on or after the effective date. We adopted the new standard on January 1, 2024, on a prospective basis. This ASU will likely result in us including additional required disclosures in the financial statement footnotes in our annual report on form 10-K commencing with the year ending December 31, 2024, but is not expected to have an effect on our consolidated financial position, results of operations or cash flows.

In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” that requires presentation of specific categories of reconciling items, as well reconciling items that meet a quantitative threshold, in the reconciliation between the income tax provision and the income tax provision using statutory tax rates. The standard also requires disclosure of income taxes paid disaggregated by jurisdiction with separate disclosure of income taxes paid to individual jurisdictions that meet a quantitative threshold. ASU No. 2023-09 is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments should be applied prospectively; however, entities have the option to apply retrospectively for each period presented. We do not expect the adoption of this new standard in 2025 to have an impact on our consolidated financial position, results of operations or cash flows.