Black Stone Minerals, L.P. (BSM) Cash Flow Statement

The wide swings in OCF/NI, from 0.67 in 2025Q2 to 4.71 in 2026Q1, indicate that GAAP net income is heavily influenced by non-cash items such as derivative gains or losses and depletion adjustments. Investors should focus on distributable cash flow rather than net income to gauge the partnership's true cash-generating ability, as the reported figures suggest earnings quality is inconsistent.

The erratic FCF trajectory, with a 128% margin in 2025Q3 versus 10.8% in 2025Q4, underscores the partnership's high operating leverage and dependence on natural gas prices. While the latest quarter's FCF margin of 70.5% appears robust, the volatility suggests that distribution sustainability is tied to commodity price stability, which remains uncertain given the recent revenue decline.

BSM's capital intensity is exceptionally low, consistent with its royalty-heavy model, but the occasional spikes, such as the $48M in 2024Q4, indicate that working interest obligations can still create cash outflows. These investments appear to be growth-oriented rather than maintenance, as the legacy mineral portfolio requires minimal upkeep, but investors should monitor whether such outlays are accretive to long-term cash flow.

The quarterly working capital adjustments are relatively small compared to operating cash flow, indicating that BSM's cash conversion cycle is stable. However, the negative changes in 2026Q1 and 2025Q1 may reflect delayed royalty payments or changes in operator activity, which could signal near-term cash flow pressure if sustained.

BSM's distribution policy appears to consume nearly all operating cash flow, with dividends exceeding FCF in several quarters, such as 2025Q4 when FCF was $10.3M versus $70.9M in dividends. This suggests that the partnership is prioritizing unitholder payouts over internal growth, which may be sustainable given its low debt, but could strain if commodity prices weaken further.

The persistent gap between operating cash flow and net income, with OCF/NI ratios above 1 in most quarters, suggests that non-cash charges like depletion and derivative losses are depressing reported earnings. This divergence implies that BSM's cash-generating ability is stronger than GAAP earnings suggest, but investors should be cautious as the gap may narrow if commodity prices decline.