MPLX LP

21. Leases

Lessee

We lease a wide variety of facilities and equipment under leases from third parties, including land and building space, office and field equipment, storage facilities and transportation equipment, while our related party leases primarily relate to ground leases associated with our refining logistics assets. Our remaining lease terms range from less thanone year to 93 years. Some long-term leases include renewal options ranging fromone year to 50 years and, in certain leases, also include purchase options. Renewal options and termination options were not included in the measurement of ROU assets and lease liabilities since it was determined they were not reasonably certain to be exercised.

The components of lease cost were as follows:

Supplemental balance sheet data related to leases were as follows:

As of December 31, 2025, maturities of lease liabilities for operating lease obligations and finance lease obligations having initial or remaining non-cancellable lease terms in excess of one year are as follows:

Lessor

Certain fee-based transportation and storage services agreements with MPC and third parties and certain fee-based natural gas transportation and processing agreements with third parties are accounted for as operating leases under ASC 842. These agreements have remaining terms ranging from less thanone year to 20 years with renewal options ranging fromone year tofive years, with some agreements having multiple renewal options.

MPLX did not elect to use the practical expedient to combine lease and non-lease components for lessor arrangements. The tables below represent the portion of the contract allocated to the lease component based on relative standalone selling price. We elected the practical expedient to carry forward historical classification conclusions until a modification of an existing agreement occurs. Once a modification occurs, the amended agreement is required to be assessed under ASC 842, to determine whether a reclassification of the lease is required.

Lease revenues included on the Consolidated Statements of Income during 2025, 2024 and 2023 were as follows:

There were no significant sales-type lease commencements or modifications during the periods presented which resulted in additional lease receivables.

The following is a schedule of minimum future rental payments to be received on the non-cancellable operating leases as of December 31, 2025:

Annual minimum undiscounted lease payment receipts under our sales-type leases were as follows as of December 31, 2025:

(1)This amount does not include the unguaranteed residual assets.

(2)The related-party balance is presented in Current assets - related parties and the third-party balance is presented in Receivables, net in the Consolidated Balance Sheets.

(3)The related-party balance is presented in Noncurrent assets - related parties and the third-party balance is presented in Other noncurrent assets in the Consolidated Balance Sheets.

The following schedule summarizes MPLX’s investment in assets held under operating lease by major classes as of December 31, 2025 and 2024:

Capital expenditures related to assets subject to sales-type lease arrangements were $221 million, $159 million and $85 million for the years ended December 31, 2025, 2024 and 2023, respectively. These amounts are reflected as Additions to property, plant and equipment in the Consolidated Statements of Cash Flows.