Risk Sleuth
MPC · 10-K filed 26 Feb 2026 · year to 31 Dec 2025

Marathon Petroleum

39 named things its latest annual report says its results depend on, each in the company's own words. 20 of them are also named by other companies we've read.

Customers

Marathon brand jobbers

earns from · 7,882 brand jobber outletsnamed as a risk
As of December 31, 2025, there were 7,882 brand jobber outlets in 40 states, the District of Columbia and Mexico where independent entrepreneurs primarily maintain Marathon-branded outlets.Business (Item 1)

Oil and natural gas producers in MPLX areas

earns fromnamed as a risk
A significant portion of MPLX’s operations is dependent on the continued availability of natural gas and crude oil production.Risk factors (Item 1A)

Suppliers

Third-party pipelines and railroads

depends onnamed as a risk
In particular, pipelines or railroads provide a nearly exclusive form of transportation of crude oil to, or refined products from, some of our refineries.Risk factors (Item 1A)

Partners and platforms

Neste Corporation

depends on · 50/50 joint venturenamed as a risk
The Martinez renewable diesel joint venture (the “Martinez Renewables joint venture”) is a partnership structured as a 50/50 joint venture with Neste Corporation to refine renewable feedstocks into renewable diesel.Business (Item 1)

Archer-Daniels-Midland Company (ADM)

depends on · MPC owning 25 percent
We formed the Green Bison Soy Processing, LLC (“Green Bison Soy Processing”) joint venture with Archer-Daniels-Midland Company (“ADM”) with ADM owning 75 percent of the joint venture and MPC owning 25 percent.Business (Item 1)

Also named by INGR

ARCO brand

Our Marathon and ARCO trademarks are material to the conduct of our refining and marketing operations.Business (Item 1)

Other companies

MPLX LP

approximately 64 percent of the outstanding MPLX common unitsnamed as a risk
As of December 31, 2025, we owned the general partner of MPLX and approximately 64 percent of the outstanding MPLX common units.Business (Item 1)

Also named by OKE, TRGP

Dakota Access Pipeline

named as a risk
For example, the Dakota Access Pipeline, in which MPLX has a minority interest, is subject to, and may in the future be subject to, litigation seeking a permanent shutdown of the pipeline.Risk factors (Item 1A)

Also named by CHRD, DMLP, ET, HESM, MPLX

Tesoro High Plains Pipeline

operates innamed as a risk
For example, we are subject to ongoing litigation regarding trespass claims relating to a portion of the Tesoro High Plains Pipeline in North Dakota.Risk factors (Item 1A)

Also named by MPLX

Northwind Midstream Acquisition and BANGL Acquisition

named as a risk
Significant acquisitions, including the Northwind Midstream Acquisition and the BANGL Acquisition, involving the addition of new assets or businesses will present risks, which may include, among others:Risk factors (Item 1A)

Also named by MPLX

Places

Canada

depends on · 599 mbpd
The crude oil sourced outside of North America was acquired from various foreign national oil companies, production companies and trading companies.Business (Item 1)

Also named by AAP, AJG, ALL, AMRC, AOS, ARE, BBY, BF/B and 97 more

Southern California

earns from · 1,162 direct dealer locations
We also have long-term supply contracts for 1,162 direct dealer locations primarily in Southern California, largely under the ARCO® brand.Business (Item 1)

Also named by EIX, FSUN

Galveston Bay refinery, Texas City, Texas

operates in · 631 mbpcd
Following the completion of the South Texas Asset Repositioning (“STAR”) project in 2023, which added 40 mbpcd of capacity, it is now our largest refinery.Business (Item 1)

Garyville, Louisiana refinery

operates in · 617 mbpcd
Our Garyville refinery is located along the Mississippi River in southeastern Louisiana between New Orleans, Louisiana and Baton Rouge, Louisiana.Business (Item 1)

Los Angeles refinery, California

operates in · 365 mbpcd
The Los Angeles refinery is the largest refinery on the West Coast and is a major producer of cleaner burning CARB fuels.Business (Item 1)

Gulf Coast region

concentrated in · 1,248 mbpcd
We currently own and operate refineries in the Gulf Coast, Mid-Continent and West Coast regions of the United States with an aggregate crude oil refining capacity of 2,986 mbpcd.Business (Item 1)

Mexico

operates innamed as a risk
We are exposed to exchange rate fluctuations related to our foreign operations in Canada and Mexico.Market risk (Item 7A)

Also named by AAP, AME, AMRC, ANET, AOS, ARES, AYI, AZO and 83 more

Hazards

PFAS

subject tonamed as a risk
There is also increased regulatory interest in PFAS, which we expect will lead to increased monitoring and remediation obligations and potential liability related thereto.Risk factors (Item 1A)

Also named by ACHR, APG, CAG, CAVA, CTVA, DD, ES, FDX and 12 more

Hurricanes and severe weather

operates innamed as a risk
The occurrence of these and similar events have had, and may in the future have, an adverse effect on our assets and operations.Risk factors (Item 1A)

Also named by AUB, PAYX

Commodities and inputs

Crude oil

exposed to its pricenamed as a risk
Our margins from the sale of refined products are influenced by a number of conditions, including the price of crude oil and other feedstocks.Risk factors (Item 1A)

Also named by AESI, ALK, APA, ARLP, BDX, CFR, CL, CLMT and 48 more

Renewable Identification Numbers (RINs)

exposed to its pricenamed as a risk
We are exposed to the volatility in the market price of RINs, LCFS credits, and other credits for low carbon fuels and we cannot predict the future prices of RINs, LCFS, or other credits.Risk factors (Item 1A)

Also named by CLMT, DAL, HASI, MUSA, PSX, WM

Soybean oil

exposed to its pricenamed as a risk
We are subject to price volatility mainly in agricultural commodities markets in relation to renewable feedstock used in the production of renewable diesel.Market risk (Item 7A)

Also named by CLX, DINO, GIS, MKC

Natural gas and NGLs

exposed to its pricenamed as a risk
A portion of MPLX’s profitability is directly affected by prevailing commodity prices primarily as a result of purchasing and selling NGLs and natural gas at index-related prices.Market risk (Item 7A)

Regulators

California Energy Commission

subject tonamed as a risk
Our results of operations, financial performance and safety and maintenance efforts could also be adversely impacted to the extent that restrictions on turnaround and maintenance activities are imposed by the CEC.Risk factors (Item 1A)

Also named by LEN, PBF, PSX

Bureau of Indian Affairs

subject tonamed as a risk
Various federal agencies within the U.S. Department of the Interior, particularly the Bureau of Indian Affairs, along with each Native American tribe, regulate natural gas and oil operations on Native American tribal lands.Risk factors (Item 1A)

Also named by DVN, MPLX

Federal Energy Regulatory Commission (FERC)

subject to
Some of our existing pipelines are considered interstate common carrier pipelines subject to regulation by the Federal Energy Regulatory Commission (“FERC”) under the Interstate Commerce Act (the “ICA”), Energy Policy Act of 1992 (“EPAct 1992”) and the rules and regulations promulgated under those laws.Business (Item 1)

Also named by AA, AEE, AEP, AM, AMRC, AR, ARES, ATO and 62 more

Laws and programs

Merchant Marine Act of 1920 (Jones Act)

subject to · at least 75 percent by U.S. citizensnamed as a risk
If we fail to maintain compliance with the Maritime Laws, we would be prohibited from operating vessels in the U.S. inland waters or otherwise in U.S. coastwise trade.Risk factors (Item 1A)

Renewable Fuel Standard (RFS)

subject tonamed as a risk
As a producer of petroleum-based motor fuels, we are obligated to blend renewable fuels into the products we produce at a rate that is at least commensurate to the EPA’s quota and, to the extent we do not, we must purchase RINs in the open market to satisfy our obligation under the RFS program.Risk factors (Item 1A)

Also named by ADM, AMRC, CF, CLMT, CVX, DAL, DINO, DTE and 13 more

California Low Carbon Fuel Standard

subject tonamed as a risk
We incur costs to comply with these state low carbon fuel standard programs, and these costs may increase if the cost of credits increases.Business (Item 1)

Also named by CRC, CVX, DINO, DTE, GPRE, PBF, SEB, UGI and 2 more

Oil Pollution Act of 1990 (OPA-90)

subject tonamed as a risk
OPA-90 also requires the responsible company to pay resulting removal costs and damages and provides for civil penalties and criminal sanctions for violations of its provisions.Business (Item 1)

Also named by KEX, MPLX

New York and Vermont climate superfund laws

subject tonamed as a risk
New York and Vermont have enacted, and other states are considering, laws that would allow the state to seek climate change-related damages from fossil fuel companies allocated based on each company’s share of past GHG emissions.Risk factors (Item 1A)

Also named by COP

California SB X1-2

subject tonamed as a risk
We cannot reasonably predict the impact that full implementation of SB X1-2 or AB X2-1 will have on our California operations nor can we predict the impact from similarly focused legislation or actions in other jurisdictions in which we operate.Risk factors (Item 1A)

California Cap-and-Invest program

subject tonamed as a risk
We are unable to estimate the impact of these programs but requirements to drastically reduce GHG emissions in California could increase our operating costs, require additional capital expenditures, reduce the competitiveness of our California refinery and renewable fuel facility and our Washington refinery and affect their long term outlook.Risk factors (Item 1A)

SCAQMD Rule 1109.1

subject tonamed as a risk
The rule has resulted, and will result, in increased costs to operate and maintain our Los Angeles Refinery.Business (Item 1)

EPA Risk Management Program (hydrofluoric acid alkylation)

subject tonamed as a risk
The revisions include a requirement that refineries with hydrofluoric acid alkylation units perform a safer technologies and alternatives analysis as part of the process hazard analysis and to document the feasibility of inherent safety measures.Business (Item 1)

Washington low carbon fuel standard

subject tonamed as a risk
For example, California and Washington have enacted low carbon fuel standards.Risk factors (Item 1A)

California electric vehicle mandates (Advanced Clean Cars II)

subject tonamed as a risk
California, in particular, has passed several regulations mandating electric vehicles.Risk factors (Item 1A)

European Union Emissions Trading System

subject tonamed as a risk
These laws could result in increased costs to distribute our products to foreign jurisdictions.Business (Item 1)

45Z clean fuel production tax credit

earns from
The produced renewable diesel generates federal RINs, 45Z tax credits and LCFS credits when sold in California or similar markets.Business (Item 1)