MPLX Q3 2026 Earnings: Asset Sale Clouds 2027 Distribution Growth

MPLX (MPLX) Q3 2026 earnings showed profit growth in both business segments, but the partnership is selling logistics assets and no longer confirms a 12.5% distribution increase for 2027. MPLX released its third-quarter 2026 results and quarterly report, for the period ended September 30, on November 3, 2026 [1][2][3]. Earlier analysis focused on three questions: whether the logistics segment could protect profit through rate increases after the MPC refinery maintenance season, whether new natural gas and NGL plants would deliver sequential growth, and whether distributable cash flow could keep up with the higher distribution.

The quarter answered those questions unevenly. Logistics rate increases held as volumes recovered. Natural Gas and NGL Services adjusted EBITDA rose $41 million from the second quarter, its first sequential increase this year, but this is a single quarter and part of the gain came from NGL prices and acquisitions [1][2]. Distributable cash flow rose 6%, yet quarterly coverage under the new distribution remained below 1.3 times. Overall, growth from the natural gas and NGL chain is materializing and logistics profit is stable but will shrink in scale. Cash flow still does not cover both distributions and growth capital, and 2027 distribution growth may come in below 12.5%.

MPLX is a midstream master limited partnership controlled by Marathon Petroleum (MPC), which holds about 64% of its common units [2]. It earns mostly long-term, contract-based service fees through two segments, logistics and natural gas and NGL services. The logistics business mainly serves MPC refineries, and MPC accounted for 48% of MPLX's total revenues and other income in 2025 [4].

Asset sale loosens the 2027 distribution growth plan

MPLX is selling the logistics assets that serve MPC's St. Paul Park and Mandan refineries for $750 million in cash. The assets have a carrying value of $422 million, the price is about 9 times their forecast 2027 adjusted EBITDA, and the deal is expected to close in the fourth quarter [1][2]. On that basis the assets contribute roughly $83 million of EBITDA a year, about 1.2% of 2025 adjusted EBITDA of $7.017 billion [4]. That amount is derived from the price and multiple; MPLX did not disclose it.

Management softened its language on the 2027 distribution after the sale. The second-quarter release said MPLX expected distribution increases of 12.5% in both 2026 and 2027 [5]. On the third-quarter call, management said the EBITDA lost through the sale may affect another year of 12.5% growth, while it still anticipates a significant increase in 2027 and keeps its targets of mid-single-digit EBITDA growth and 1.3 times annual coverage [3]. MPLX did not give a new growth rate.

Distributable cash flow improved this quarter, but coverage under the new distribution fell short of the target. Third-quarter distributable cash flow was $1.537 billion, up 6% from the second quarter [1][5]. The declared distribution was $1.2111 per unit, or $1.226 billion in total, which gives coverage of about 1.25 times using the table figures; MPLX reports it as 1.3 times [1]. Adjusted free cash flow after distributions was negative $645 million, cash fell from $2.137 billion at the start of the year to $1.297 billion, and leverage was 3.8 times at quarter end [1].

Logistics rate increases held as volumes recovered

The logistics segment posted third-quarter adjusted EBITDA of $1.204 billion, up 6% year over year and above $1.161 billion in the second quarter [1][5]. Total pipeline throughput was 5.951 million barrels per day. Crude oil pipeline volume rose 1% year over year after a 5% year-over-year decline in the second quarter, and the average pipeline tariff was $1.09 per barrel, up from $1.07 in the second quarter [1][5].

Growth came mainly from pricing, and the volume recovery did not dilute the earlier rate increases. Of the $67 million year-over-year increase, higher rates and fees, including butane blending, contributed $85 million and lower project expense contributed $20 million, while operating costs, including incentive compensation, rose $40 million [2]. The segment accounted for about 70% of the year-over-year increase in consolidated adjusted EBITDA [1].

This confirmation has limits. The rate gains were concentrated in product pipelines, where the average tariff rose 7% year over year, while the crude oil pipeline tariff fell 3% [1]. Part of the growth in rental income came from a change in how lease income is presented after a lease contract modification, and MPLX did not split out the amount [2]. It is also unclear whether lower project expense will last.

Conclusion

The report confirms stable logistics profit and an early contribution from new natural gas and NGL plants, but the outlook for distribution growth is weaker. Consolidated adjusted EBITDA was $1.859 billion, up 5.3% year over year [1]. Management said the new projects bring only modest cash flow in 2026 and that cash flow growth should accelerate in 2027 [3]. The next tests are whether fourth-quarter distributable cash flow approaches the roughly $1.595 billion needed for 1.3 times quarterly coverage, whether Blackcomb, the BANGL expansion and Bay Runner enter service on schedule [1], and what 2027 distribution increase MPLX announces.

Sources

• [1] MPLX Q3 2026 8-K filed 2026-11-03
• [2] MPLX Q3 2026 10-Q filed 2026-11-03
• [3] MPLX Q3 2026 earnings call 2026-11-03
• [4] MPLX FY2025 10-K filed 2026-02-26
• [5] MPLX Q2 2026 8-K filed 2026-08-04