Sterling Infrastructure, Inc. (STRL) Cash Flow Statement

The gap between net income of $214.9M and operating cash flow of $99.1M is the central signal in the cash flow data, and it suggests that reported earnings are not yet converting to cash at the pace the income statement implies. The working capital outflow of this magnitude is consistent with percentage-of-completion dynamics that can build unbilled receivables ahead of client approval. Investors should monitor whether the 2026Q3 build reverses in subsequent quarters, since persistence would warrant further investigation into collection timing and estimate-to-complete assumptions.

Free cash flow has been volatile across the ten-quarter window, peaking at $158.6M in 2024Q4 and at $158.3M in 2025Q4, while the 2026Q3 figure of $53.3M sits well below that run rate. The compression appears to be driven by the working capital swing rather than capital intensity, since capex stayed within a narrow 2.2% to 5.0% of revenue throughout. The pattern may indicate that free cash flow is highly sensitive to project billing cycles, which makes a single-quarter read less reliable than a trailing average.

The alternation between large inflows and outflows suggests that billing milestones and receivable collections on long-duration projects are driving much of the reported cash profile. A reversal of the 2026Q3 build would likely restore conversion toward historical levels, but the absence of such a reversal could indicate slower client payment or rising unbilled balances. Analysts should track billings in excess of costs against costs in excess of billings to determine whether the outflow reflects timing or a deterioration in collection quality.

Capex ran at $45.8M in 2026Q3 and $50.0M in 2026Q2, figures that are elevated in absolute terms but low relative to the revenue base, consistent with an operating model that relies on leased or contracted equipment for peak work. D&A of $27.8M in 2026Q3 sits below capex, which suggests some net investment in the fleet to support the E-Infrastructure expansion. Whether this capex is maintenance or growth in character is not fully disclosed in the provided data, so the true reinvestment requirement cannot be cleanly separated.

The company's capital return activity has been concentrated in buybacks and acquisitions rather than dividends, and the 2026Q3 repurchase came during a quarter when operating cash flow covered only a fraction of net income. Funding repurchases from a working capital-depressed quarter may indicate management confidence in future conversion, but it also reduces cushion if billing delays persist. Investors should evaluate whether repurchase pace remains aligned with trailing free cash flow rather than single-quarter results.