Sky Harbour Group Corp (SKYH) Cash Flow Statement

The gap between net income and operating cash flow is stark: in 2025Q2, net income was $17.5M while OCF was -$944K, and in 2025Q4, net income of $9.6M was accompanied by OCF of $8.9M, but this is an outlier. The persistent divergence suggests that reported earnings are heavily influenced by non-cash items such as fair value adjustments and warrant revaluations, which do not reflect operational cash generation. Investors should monitor the sustainability of these adjustments, as they may reverse and expose the underlying cash burn.

The FCF trajectory is dominated by construction-related capex, which averaged over $20M per quarter, while operating cash flow remained near zero or negative. This indicates that the company is in a heavy investment phase, with FCF margins consistently negative, ranging from -2.8% to -112.5%. The positive FCF in 2026Q2 ($32.6M) appears to be a data anomaly, as capex was positive, which is unusual; this may indicate a reversal of prior accruals or a one-time event, warranting further investigation.

The capital intensity is characteristic of a real estate developer, where upfront construction costs are substantial and depreciation will lag the investment. The negative gross margins suggest that these assets are not yet generating sufficient rental income to cover their costs, implying that the company is still in the ramp-up phase. The high fixed-cost base and reliance on external funding for growth are key risks, as any delays in construction or leasing could strain liquidity.

The working capital changes are relatively small compared to capex, but they show variability that may be tied to project milestones. For instance, 2025Q4 saw a positive $6.1M change, which helped OCF, while other quarters saw negative changes. This suggests that the company is managing payables and receivables around construction activity, but the overall impact on cash flow is minor relative to the capital expenditure program.

The absence of dividends and negligible buybacks underscores a reinvestment strategy focused on expanding the hangar portfolio. The company has also engaged in acquisitions, with a net outflow of $31.7M in 2024Q4, likely for land or existing facilities. This deployment strategy is consistent with a growth-stage company, but it also means that shareholders are relying entirely on future asset appreciation and rental income for returns, which carries execution risk.

The divergence between cumulative net income and operating cash flow suggests that non-cash charges, such as depreciation and stock-based compensation, are significant, but also that working capital and other adjustments are providing some cash relief. However, the cumulative FCF is deeply negative at around -$238M, highlighting the massive investment required to build the asset base. This gap between earnings and cash reality is typical for capital-intensive developers, but it also means that the company's ability to generate positive cash flow in the future is contingent on successful stabilization of its campuses.