Martin Midstream Q3 2026 Earnings: Sulfur Lifts Adjusted EBITDA as Fertilizer Lags

Martin Midstream Partners (NASDAQ: MMLP) reported Q3 2026 revenue of $231.7 million, up approximately 37% from $168.7 million a year earlier, while net loss per common unit narrowed to $0.10 from $0.21. Adjusted EBITDA increased 22% to $23.6 million as gains in pure sulfur, lubricants, and marine transportation outweighed pressure from fertilizer and terminalling operations. Operating cash flow remained negative, however, and total debt increased to $483.5 million.

Core Earnings Data

Revenue increased by $63.0 million, but Adjusted EBITDA grew more slowly, resulting in an approximate Adjusted EBITDA margin of 10.2% versus 11.4% a year earlier. Operating income rose approximately 48% to $10.2 million, helping narrow the GAAP net loss by roughly half.

Interest expense remained a significant constraint at $14.7 million, exceeding quarterly operating income. Distributable cash flow improved to a modestly positive $0.2 million, although net cash used in operating activities increased to $4.9 million.

Adjusted EBITDA and distributable cash flow are non-GAAP measures and exclude items that remain economically important, including interest expense and depreciation and amortization.

Business and Segment Performance

Sulfur Services and Specialty Products produced the largest year-over-year improvements, while marine operations drove Transportation higher. Terminalling and Storage was the only operating segment to report lower Adjusted EBITDA.

Transportation benefited from a $3.3 million improvement in marine Adjusted EBITDA. Inland marine operations gained from higher utilization and day rates after the annual inspection cycle concluded. This more than offset a $1.4 million decline in land transportation, where lower rates and mileage reduced service revenue and a favorable prior-year allowance adjustment did not recur. Reduced third-party fertilizer production also lowered freight activity at the central Florida terminal.

Terminalling and Storage declined because of lower NGL storage throughput revenue, weaker specialty-terminal service revenue, higher expenses, and lower shore-terminal rental revenue. Smackover refinery results were generally unchanged. Management nevertheless maintained confidence in the segment’s full-year outlook because most of its cash flow is supported by fixed-fee agreements.

Sulfur Services was led by a $4.5 million improvement in pure sulfur, reflecting higher volumes and margins, including the benefit of higher commodity prices. Sulfur prilling added another $0.8 million, but fertilizer Adjusted EBITDA declined $3.4 million due to lower volumes and compressed margins.

Specialty Products benefited from a $1.8 million increase in lubricants Adjusted EBITDA as sales volumes and margins improved. Grease contributed a $0.2 million increase from a more favorable sales mix and lower expenses, although its volumes remained below the partnership’s forecast.

EBITDA Improved, but Turnarounds and Interest Kept Cash Flow Negative

The $4.3 million increase in Adjusted EBITDA did not translate into positive operating cash flow. Management said the third quarter is historically the weakest period for cash generation because fertilizer facilities undergo annual maintenance turnarounds while the semiannual interest payment on senior notes also comes due. Higher labor and material costs associated with the fertilizer turnarounds prompted the partnership to increase its estimated 2026 capital expenditures, although it did not disclose the updated amount.

These seasonal cash requirements contributed to higher revolver borrowings and lower available liquidity. Debt increased by $44.4 million from the end of 2025, primarily through the revolving credit facility.

The partnership remained compliant with its debt covenants. Although leverage was higher than at year-end, management said the 4.96x ratio was unchanged from the second quarter because trailing-12-month Credit Adjusted EBITDA improved for a second consecutive quarter to $97.6 million.

MMLP also declared a quarterly cash distribution of $0.005 per common unit, payable November 13, 2026, to unitholders of record on November 6.

2026 Adjusted EBITDA Guidance Raised

After generating $72.3 million of Adjusted EBITDA during the first nine months of 2026, Martin Midstream raised its full-year target to $94.0 million. Management cited quarterly performance ahead of its internal forecast, with pure sulfur and lubricants serving as the principal drivers.

The partnership also expects sulfur to remain a counterweight to fertilizer weakness through year-end. Management said it saw no meaningful near-term relief for fertilizer because growers’ cost structures and economics had not improved.

Recent Insider Transactions

The latest 10 detailed records supplied include three director stock awards dated February 17, 2026, and seven purchases by Martin Product Sales L.L.C., a greater-than-10% beneficial owner, between October and December 2025. All were reported as direct transactions; the values below are reported transaction values rather than unit counts.

These transactions are presented as reported and do not, by themselves, establish insiders’ expectations for the partnership’s future performance.

Risks Investors Need to Watch

• Fertilizer weakness also affects transportation. Compressed fertilizer margins and lower volumes reduced Sulfur Services earnings, while lower third-party fertilizer production cut land transportation mileage. Management did not expect meaningful fertilizer relief before year-end.
• Debt and interest remain significant constraints. Total debt reached $483.5 million, leverage stood at 4.96x, and quarterly interest expense of $14.7 million exceeded operating income. These obligations limit the conversion of operating gains into net income and cash available for other purposes.
• Turnaround costs are pressuring cash generation. Operating cash outflow widened to $4.9 million, and the partnership raised its capital expenditure estimate because fertilizer-plant turnaround labor and material costs were higher.
• Terminalling activity remains uneven. Lower NGL throughput, specialty-terminal service revenue, and shore-terminal rental revenue reduced segment Adjusted EBITDA, even though fixed-fee contracts provide some support.

Summary

Martin Midstream’s Q3 2026 results showed better operating performance, led by pure sulfur, lubricants, and marine transportation, while fertilizer and terminalling remained under pressure. The partnership narrowed its net loss and raised full-year Adjusted EBITDA guidance, but negative operating cash flow, higher revolver borrowings, and a 4.96x leverage ratio remain central considerations. The next key developments are whether sulfur can continue offsetting fertilizer weakness and whether cash generation improves after the seasonal turnaround and interest-payment period.