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Marathon Petroleum

mpc · NYSE Energy
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Ticker mpc
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Sector Energy
Industry Oil & Gas Refining & Marketing
Employees 10,000+
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FY2024 Annual Report · Marathon Petroleum
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2024 ANNUAL REPORT
M A R AT H O N  P E T R O L E U M  C O R P O R AT I O N

TABLE OF CONTENTS
1
4
6
7
8
12
13
CEO LETTER
OPERATIONS OVERVIEW
CORE VALUES
FINANCIAL HIGHLIGHTS
SUSTAINABILITY
BOARD OF DIRECTORS
LEADERSHIP TEAM
On the cover: 
Board Operator Andrew Chifici at our 
Garyville, Louisiana, refinery

Fellow Shareholders,
Throughout 2024, Marathon Petroleum Corporation (MPC) executed on our strategic commitments to deliver a 
successful year, remaining steadfast in our commitment to safely operate our assets and protect the health and safety 
of our employees and communities.
In a market environment that became increasingly volatile as the year progressed, we generated $8.7 billion of net 
cash from operations, which enabled peer-leading capital return of $10.2 billion and a 23% capital return yield for our 
shareholders. Our commitments to operational excellence, commercial performance, and peer-leading profitability 
per barrel in each of the regions where we operate drove our strong results, with 92% refining utilization and 99% 
commercial capture for the full year. Execution of our Midstream strategy delivered segment adjusted EBITDA growth 
of 6% year over year. Over the last four years, on average, we have grown our Midstream segment adjusted EBITDA by 
almost 7% per year.
Foundational to our results, we achieved our lowest companywide OSHA recordable injury rate and strongest 
environmental performance in the last five years, demonstrating our commitment to safe and reliable operations. We 
also advanced environmental efforts, achieving a Midstream industry first for energy efficiency and making significant 
progress toward our methane emissions reduction target. 
Over the past year, we continued to position MPC to deliver peer-leading financial performance irrespective of the 
market environment. While maintaining safe and reliable operations, we have made sustained structural changes 
to improve our cost competitiveness. Throughout our commercial organization, we are improving value chain 
optimization with a more integrated and advanced approach to our execution. At our refineries, we have made 
disciplined investments targeted at enhancing margins, reducing cost and optimizing systems to drive peer-leading 
performance.
FROM THE CEO
MPC 2024 ANNUAL REPORT
1

FROM THE CEO
OUR DIFFERENTIATED 
PARTNERSHIP
An integral aspect of our compelling value 
proposition is MPC’s strategic partnership 
with MPLX, our master limited partnership, 
which comprises most of our Midstream 
segment. In addition to providing us with 
flexible logistics capabilities, MPLX’s 
durable and growing cash flow is strategic 
to MPC’s portfolio and differentiates us 
from peers. For the last four consecutive 
years, our Midstream segment has 
generated mid-single digit segment 
adjusted EBITDA growth. 
In 2024, MPLX increased its quarterly 
distribution by 12.5%, driving an annualized 
cash distribution to MPC of $2.5 billion. 
This was the third consecutive year of 
distribution growth of 10% or greater. We 
expect distributions from MPLX in 2025 
will cover MPC’s dividends and standalone 
capital outlook, further supporting our 
ability to deliver peer-leading capital return 
through all market cycles. In 2024, backed 
by the durability of this cash flow uplift, 
MPC’s Board of Directors approved an 
additional $10 billion in share repurchase 
authorizations and increased its quarterly 
dividend 10%.
Across operations, our integrated value 
chains and geographically diversified 
assets provide us with the platform to 
outperform, and we are committed to 
achieving peer-leading profitability in 
every region where we operate. To 
deliver our full potential, we will continue 
to optimize our portfolio, leverage our 
value chain advantages, and ensure the 
competitiveness of our assets, as well as 
continue to invest in the skills, capabilities 
and careers of our people. Successful 
execution of these objectives will enable 
us to deliver superior through-cycle cash 
generation.
VALUE ENHANCING 
INVESTMENTS
Guided by our financial discipline, we 
deploy value enhancing capital where we 
believe there are attractive returns that will 
strengthen our competitiveness. Across all 
three of our regions, we see the results of 
our investments to date and believe our 
planned projects, paired with priorities of 
operational excellence and commercial 
performance, will further enhance MPC’s 
position well into the future.
On the Gulf Coast, construction of 
a 90,000-barrels-per-day distillate 
hydrotreater at our Galveston Bay refinery 
will enable us to place additional ultra-low 
sulfur diesel into this high-value market. 
This project is expected to be completed 
by year-end 2027 and generate more than 
a 20% return.
Ongoing investment in our Los Angeles 
refinery will integrate and modernize its 
utility systems to improve reliability and 
increase energy efficiency. This will further 
enhance its strong competitiveness in the 
West Coast market while simultaneously 
achieving compliance with an emissions 
reduction requirement that will apply to 
all Southern California refineries. The 
completion target is year-end 2025, and 
we expect a return of approximately 20% 
on this investment.
In our Mid-Continent region, an investment 
at our Robinson, Illinois, refinery will 
increase the facility’s ability to meet the 
growing demand for jet fuel, with an 
expected return of approximately 25% 
once operational in 2026.
In our Midstream segment, MPLX 
advanced its wellhead-to-water natural 
gas liquids (NGL) value chain strategy 
with its recently announced Gulf Coast 
fractionation complex and export terminal. 
The multiyear investment complements 
MPLX’s existing asset base, leverages 
existing infrastructure, and will be located 
adjacent to MPC’s Galveston Bay refinery. 
This project further demonstrates the 
value of MPC’s partnership with MPLX, 
as we see it as a platform for future 
optimization and incremental growth.
SUSTAINING OUR BUSINESS
At MPC, we consider sustainability to be 
critical to our long-term success. It guides 
our approach to safety, environmental 
stewardship, community investment and 
our people and culture. We make and 
measure progress in these areas by 
strengthening our resilience, innovating for 
the future and embedding sustainability 
in our decision-making and stakeholder 
engagement efforts.
Across our manufacturing sites, we are 
taking disciplined steps to advance our 
goal of lowering the carbon intensity 
of our operations and the products 
we manufacture, while continuing to 
supply a growing and evolving energy 
market. Last year, through our dedicated 
initiatives and programs, we progressed 
our work toward achieving the targets 
we’ve set for reducing greenhouse gas 
(GHG) emissions, methane emissions and 
freshwater withdrawal intensities.
In developing our targets, we focus on 
meaningful goals that offer multifaceted 
benefits. As an example, energy efficiency 
is one of our key metrics with both 
environmental and financial benefits. 
By identifying where energy can be 
conserved cost-effectively, we reduce 
our operating costs and reduce our 
environmental footprint. MPC has achieved 
significant energy savings, GHG emissions 
reductions and cost savings through our 
Focus on Energy program. As a five-time 
U.S. Environmental Protection Agency 
(EPA) ENERGY STAR® Partner of the Year – 
Sustained Excellence award recipient, we 
are an active participant in the program, 
sharing our strategies and successes with 
other industrial companies.
Last year, MPLX’s Bluestone natural gas 
plant in Pennsylvania became the first 
facility in the U.S. natural gas processing 
sector to achieve the EPA’s ENERGY STAR 
Challenge for Industry, well surpassing 
the requirements of lowering its energy 
intensity by 10% within a five-year period. 
In October, I had the honor of joining 
our team at an event celebrating their 
achievement and highlighting MPLX’s 
sustainability efforts with EPA officials, 
federal and state legislators, and area 
business and community stakeholders. We 
intend to share our learnings and expand 
the program to additional MPLX gas 
processing facilities.
Our investments in renewable fuels have 
also made significant contributions to the 
ongoing reduction of our companywide 
carbon intensity. In 2024, we produced 
nearly 600 million gallons of renewable 
MPC 2024 ANNUAL REPORT
2

fuels – the most in our company’s history 
– and delivered approximately 2.8 billion 
gallons of renewable fuels, making MPC 
one of the largest marketers of renewable 
fuels in the U.S. Late in the year, our joint 
venture facility with Neste in Martinez, 
California, reached full production capacity 
of 730 million gallons per year. It is one 
of the largest renewable diesel facilities 
in the world and produces a fuel that has 
significantly lower carbon intensity than 
traditional diesel.
We recognize that our offices and 
operations sites are integral parts of the 
communities where they are located, 
and we continually look for ways to make 
a positive, measurable impact for our 
neighbors. We invest in our communities 
through contributions and partnerships 
with charitable organizations that 
reflect the priorities of our community 
stakeholders, align with our Core Values, 
and support our sustainability goals. 
At the end of the day, nothing is more 
important than the safety of our people 
and our communities. In 2024, two 
MPC refineries earned the American 
Fuel and Petrochemical Manufacturers 
highest safety award, and two others 
were recognized for top-5% and top-10% 
safety performances. We know that safe 
operations are the only foundation we can 
successfully and sustainably build on, and 
all our efforts must begin with that in mind.
LOOKING AHEAD
I am optimistic about the opportunities 
before us. Over the long term, we expect 
the U.S. refining industry will remain 
structurally advantaged over the rest of the 
world, mainly due to the availability of low-
cost energy. Our commitment to safe and 
reliable operations, our high-complexity 
refining system, and our domestic and 
international logistical capabilities further 
increase our competitive advantage. 
Operational excellence, commercial 
execution, and our cost competitiveness 
yield sustainable structural benefits. 
To deliver outperformance, we will 
continue to focus on optimizing our 
portfolio, leveraging our value chain 
advantages, and ensuring our assets are 
competitive while investing in our people. 
Underpinning all of our efforts, our new 
Core Value of Excellence, introduced in 
the fall, inspires us to always be looking 
ahead and to continuously identify 
improvements that will make us an even 
stronger company tomorrow.
With our highly advantaged refining 
business and the expected $2.5 billion 
annualized distribution from MPLX, we 
are positioned to lead peers in capital 
returns through all market cycles. MPC is 
poised to create exceptional value through 
peer-leading performance, execution 
of our strategic commitments, and our 
compelling value proposition.
Affordable, reliable energy accelerates 
life’s possibilities and is a critical 
component of economic growth. I am 
honored to lead MPC and proud of the 
work we do to meet the needs of all those 
who rely on the essential energy products 
and services we provide. Thank you for 
supporting our company.
Sincerely, 
Maryann T. Mannen 
President and Chief Executive Officer 
MPC 2024 ANNUAL REPORT
3

APPROX.
21,000 
MILES OF PIPELINE 
OWNED, LEASED OR WITH 
OWNERSHIP INTEREST
40 
MILLION
BARRELS OF TERMINAL 
STORAGE CAPACITY
559 
TRANSPORT TRUCKS OWNED AND 
OPERATED
348
VESSELS AND BARGES 
OWNED AND OPERATED 
THROUGH MARINE BUSINESS
APPROX.
8,900 
NORTH AMERICAN RETAIL & 
MARKETING LOCATIONS
12.4 
BILLION 
STANDARD CUBIC FEET 
PER DAY OF NATURAL GAS 
PROCESSING CAPACITY
APPROX.
2.8 BILLION
GALLONS OF RENEWABLE 
FUEL DELIVERED IN 2024
829,000
BARRELS PER DAY OF  
NATURAL GAS LIQUIDS  
FRACTIONATION CAPACITY 
APPROX.
13,550 
RAIL TANK CARS OWNED, 
LEASED AND OPERATED
APPROX.
390,000 
TONNES CO2 CAPTURED 
FROM OPERATIONS AND 
JOINT VENTURES IN 2024
APPROX.
3 MILLION 
BARRELS PER CALENDAR DAY OF 
CRUDE OIL REFINING CAPACITY
2
STRONG
BRANDS
MARATHON AND ARCO
MPC 2024 ANNUAL REPORT
4

OPERATIONS OVERVIEW
As of 12/31/24
Note: Illustrative representation of asset map
(a) Includes MPC/MPLX owned and operated lines, 
MPC/MPLX interest lines operated by others and MPC/MPLX 
operated lines owned by others.
(b) Includes MPLX owned and operated natural gas 
processing complexes
MPLX Owned 
Marine Facility
MPLX Natural Gas
Processing Complex(b)
MPLX Marine 
Inland Route
MPLX Refining 
Logistics Asset
MPLX Owned and Part-Owned 
Light Product Terminal
MPLX Owned Asphalt/
Heavy Oil Terminal
MPLX Gathering 
System
MPC Owned and Part-Owned 
Light Product Terminal
MPC Owned Asphalt/
Heavy Oil Terminal 
MPC Refinery
MPC Marketing Area
MPC Renewable 
Fuels Facility
Martinez Renewables
Joint Venture
MPC/MPLX Pipeline(a)
MPC Owned and Part-Owned
Marine Facility
Cavern
Ethanol Facility 
(joint venture with The Andersons)
MPC Renewable Feedstock 
Processing Facility
MPC 2024 ANNUAL REPORT
5

At Marathon Petroleum, our 
Core Values guide the decisions 
we make and the actions we 
take every day. They describe 
the spirit of who we are as a 
company and are at the heart of 
our success. 
We are proud of the work we do to provide 
the essential energy products and services 
that help meet the world’s growing energy 
needs. We believe how we perform our work 
holds equal importance with the work we 
perform, and living our Core Values is the way 
we demonstrate what matters most to us. As 
we continue to innovate and evolve, we are 
committed to holding ourselves accountable 
to these high standards – both to honor our 
legacy and to light our path forward.
CORE VALUES
SAFETY AND ENVIRONMENTAL 
STEWARDSHIP
•	 Protect our people, communities we work in,  
and the world we all share
•	 Ensure an incident-free, reliability-focused and 
injury-free workplace
•	 Demonstrate our unwavering commitment to  
safe and environmentally responsible operations 
every day
INTEGRITY
•	 Set high expectations for ourselves and build trust 
in each other, with business partners, shareholders 
and the communities where we work and live
•	 Say what we’re going to do — and then do it
•	 Behave ethically in all we do
INCLUSION
•	 Value and respect diversity in culture, background, 
perspective and experience
•	 Strive to provide our employees with a 
collaborative, supportive and inclusive work 
environment where they can maximize their full 
potential for personal and business success
COLLABORATION
•	 Actively partner with our stakeholders to find and 
create shared value, making a positive difference 
together
•	 Foster respectful, constructive, solution-oriented 
dialogues
EXCELLENCE
•	 Strive for exceptional performance in all that we do
•	 Embrace continuous improvement, never settling 
for the status quo
•	 Uphold rigorous expectations and an ownership 
and accountability mindset
MPC 2024 ANNUAL REPORT
6

FINANCIAL HIGHLIGHTS
EXECUTION OF COMMITMENTS
In 2024, driven by our commitments to peer-leading 
operational excellence, commercial performance, and 
profitability per barrel in each of the regions in which we 
operate, MPC generated $8.7 billion of net cash from 
operations. Our strong cash flow enabled peer-leading capital 
return of $10.2 billion and a 23% capital return yield for our 
shareholders. Over the course of the year, we demonstrated 
strong cash flow generation through-cycle, durable Midstream 
growth, and peer-leading capital allocation.
Refining Utilization: 92%
Full-year Capture*: 99%
Growth in Midstream Segment Adj. EBITDA: 6%
Annualized Distribution to MPC from MPLX: $2.5 billion
Operating Cash Flow: $8.7 billion
*Capture reflects the percentage of our Refining & Marketing (R&M) Margin Indicator realized 
in our reported R&M Margin. The calculation of our R&M Margin Indicator is available on our 
website at www.marathonpetroleum.com/Investors/Investor-Market-Data.
2024
RETURNING CAPITAL TO SHAREHOLDERS
In a business where there is significant value in the ability to return capital to shareholders, we repurchased $9.1 billion worth of shares 
in 2024 and, effective with the third quarter dividend, increased MPC’s quarterly dividend by 10%. As of the end of the year, we had 
$7.8 billion remaining under our share repurchase authorizations, highlighting our enduring commitment to superior shareholder 
returns. In 2024, MPLX increased its quarterly distribution by 12.5%, driving an annualized cash distribution to MPC of $2.5 billion. We 
expect distributions from MPLX in 2025 will cover MPC’s dividends and standalone capital outlook. With our highly advantaged refining 
business and the annualized distribution from MPLX, we are positioned to lead peers in capital returns through all market cycles.
Total Capital Returned to Shareholders: $10.2 billion
Share Repurchases: $9.1 billion
Quarterly Dividend Per Share: 10% increase for two consecutive years 
Capital Return Yield*: 23%
*Capital return yield calculated as 2024 dividends paid plus 2024 share repurchases divided by 2024 year-end market capitalization.
2024
DIVIDENDS PAID PER SHARE
2022
2023
$2.49
$3.08
2024
$3.39
VALUE ENHANCING INVESTMENTS
Over the past several years, we have made disciplined investments in our Refining & Marketing value chain targeted at enhancing 
margins, reducing costs and optimizing systems, ultimately strengthening our competitiveness in each of the regions in which we 
operate. In 2025, MPC plans to progress major multiyear projects at refineries in our Gulf Coast, West Coast and Mid-Continent value 
chains. We expect our planned capital investments will further enhance MPC’s position well into the future.
At MPLX, next year’s growth capital is primarily focused on growing its natural gas and natural gas liquids (NGL) businesses in support 
of expected increased producer activity. Reaching a significant milestone in its NGL wellhead-to-water value chain strategy, MPLX 
announced a project to construct a Gulf Coast fractionation complex and export terminal, all of which will be located adjacent to MPC’s 
Galveston Bay refinery. MPLX’s fully integrated NGL value chain connects the Permian Basin to the Gulf Coast and will supply growing 
global demand for liquefied petroleum gas (LPG). 
MPC(1)
  Refining & Marketing —  
Value Enhancing	
  Refining & Marketing —  
Maintenance
  Corporate and Other 
  Renewable Diesel
MPLX(2)
  Natural Gas and NGL Services
  Crude Oil and Products Logistics
  Maintenance
2025 CAPITAL SPENDING OUTLOOK
(1)  Does not include capitalized interest.
(2) The 2025 capital investment outlook for Midstream - MPLX excludes $242 million of capital expenditures, which is expected to be incurred primarily by MPC and other MPLX customers on MPLX’s behalf.  
This reimbursable capital will be included in the 2025 MPC Midstream capital expenditures.
INVESTING WITH DISCIPLINE
 MPC(1)	
 MPLX(2)
$ MILLIONS
1,624
1,396
1,523
2022
2023
2024
1,250
2025  
Outlook
1,061
1,103
1,497
2,000
MPC
MPLX
MPC 2024 ANNUAL REPORT
7

SUSTAINABILITY
Our sustainability-driven approach supports our relentless commitment to continuously improve. From project evaluation to employee 
engagement, we strive to create shared value with our stakeholders – empowering people to achieve more, contributing to progress in 
our communities and protecting the environment we all share. We are working to strengthen the resiliency of our business, innovate for 
the future and embed sustainability in all we do. Progressing our sustainability efforts is critical to our long-term success in an evolving 
energy industry. 
CULTURE OF SAFETY AND ENVIRONMENTAL STEWARDSHIP
Shaped by our Core Values, we approach our work with the highest commitment to safety and a focus on caring for the environment. In 
2024, we achieved year-on-year improvement in each of our primary environmental and safety metrics with designated environmental 
incidents and an OSHA recordable injury rate representing five-year companywide lows. Embedding safety into our daily work – from 
disciplined planning to careful final execution – is an investment in the longevity and sustainability of our industry and enhances the 
overall reliability and efficiency of our operations.
6th 
consecutive year
Recognized 
as a leader
Named a Best  
Place to Work 
listed on the Dow Jones Best-in-Class 
North America Index
on the JUST 100 List, ranked 
#1 Oil and Gas company
for Disability Inclusion on the 
Disability Equality Index
When it comes to safety, our work is never done, and we are unwavering in our pursuit of an accident-free, incident-free workplace. 
To continually reinforce a strong safety culture and performance expectations, we use a combination of management systems, best 
practice-based operational standards, and documented work processes and programs. We enhance our safety programs based 
on peer observation and feedback, identifying lead indicators of incidents, and focusing on human and organizational performance 
foundational beliefs.
Empowering Safe Operations
Our people know that safety is a responsibility shared 
across the company, and everyone at MPC is empowered to 
create and maintain a safe and healthy workplace. If any employee or 
contractor believes a task is being performed unsafely, they have the 
authority and obligation to stop the work in progress until the safety 
concern is addressed – no matter how big or small the job may be. 
Our steadfast resolve to safely and 
responsibly operate our assets is critical 
to our business and to protecting our 
people, communities and the environment. 
While zero is always our goal, we maintain 
readiness and consistently exercise and 
assess our response capabilities, which 
help us mitigate and minimize impacts in the 
event of an incident. In these instances, we 
devote ourselves to thoroughly examining 
and learning from the occurrence to 
strengthen our processes and practices.
Companywide Process Safety Event (PSE) Rate 
Tier 1 & 2 PSE event per 200,000 hours
Companywide OSHA Recordable Rate 
Incidents per 200,000 hours
Companywide Tier 3 & 4 Designated 
Environmental Incidents 
Count
Process safety events are unplanned or uncontrolled 
releases of material from a process. The PSE rate is the 
count of events per 200,000 hours of work.  
Designated environmental incidents include 
reportable releases to the environment (air, land 
or water), environmental permit exceedances, and 
agency enforcement actions.
2022
2023
2024
52
69
47
2022
2023
2024
0.52
0.44
0.39
2022
2023
2024
0.25
0.30
0.26
MPC 2024 ANNUAL REPORT
8

SUSTAINABILITY
LOWERING OUR CARBON FOOTPRINT AND CONSERVING NATURAL RESOURCES
We are committed to reducing the carbon footprint of our operations and the products we manufacture; improving the energy efficiency 
of our operations; and working with others to improve energy efficiency within the manufacturing, consumer and transportation sectors. 
Our suite of meaningful targets helps us measure our efforts to decrease greenhouse gas (GHG) emissions, methane emissions and 
freshwater withdrawal intensity. We assess progress with these targets on an annual basis and may modify them or adopt new metrics as 
we achieve our goals or new sources of information emerge. In 2024, we extended our Scope 1 and 2 GHG emissions intensity target to a 
38% reduction by 2035 from 2014 levels. Our performance to date has resulted in real, sustainable emissions reductions. For instance, since 
2019, we have reduced absolute Scope 1, 2 and 3 GHG emissions by more than 25 million tonnes per year. 
Scope 1 and 2 GHG Emissions 
Intensity(1)(2) 
(tonnes CO2e/thousand boe input)
 2035 Goal     2030 Goal     Progress
Absolute Scope 3 - Category 11 
GHG Emissions(1)(2) 
(tonnes CO2e)
 2030 Goal     Progress
15% 
5%
30% REDUCTION of Scope 1 and 2 GHG 
emissions intensity by 2030 and 38% 
REDUCTION by 2035 from 2014 levels
15% REDUCTION of Scope 3 - Category 11 
GHG emissions by 2030 from 2019 levels
28%
AND
30%
BY 
2030 
38%
BY 
2035 
Methane Emissions Intensity(1)(2)(3)
(methane-scf/natural gas input-scf)
 2030 Goal     Progress
75% REDUCTION of MPLX methane 
emissions intensity by 2030 from 2016 levels
62%
75% 
Freshwater Withdrawal Intensity(1)(4)
(megaliters/million boe input)
 2030 Goal     Progress
18%
20%
20% REDUCTION of freshwater withdrawal 
intensity by 2030 from 2016 levels
(1)  Additional information regarding our targets, including calculation methodologies, can be found in our 2024 Perspectives on Climate-Related Scenarios report, 
available at www.marathonpetroleum.com/sustainability.
(2) 2024 estimated values are preliminary and subject to change.
(3) Inclusive of operations in MPLX’s Natural Gas and NGL Services segment.
(4) Progress shown through 2023.
For a fifth consecutive year, MPC earned the ENERGY STAR® Partner of the Year – Sustained 
Excellence award from the U.S. Environmental Protection Agency (EPA). This is the highest 
level of recognition in the ENERGY STAR program. Five of our refineries earned 2024 ENERGY 
STAR certifications from the EPA. In addition to recognizing these locations for energy efficiency 
performance in the top 25% of their nationwide peer groups, it also marks the fifth consecutive 
year that these particular refineries have received certifications in the same year. Notably, our 
Canton, Ohio, and Garyville, Louisiana, refineries have earned the certification for 19 consecutive 
years – every year refineries have been eligible. MPC has received more certifications than all 
other refining companies combined. In our Midstream operations, MPLX’s Bluestone natural gas 
plant in Pennsylvania became the first facility in the U.S. natural gas processing sector to achieve 
the EPA’s ENERGY STAR Challenge for Industry.
Excellence in Energy Efficiency
5th
consecutive year
the highest level of recognition
MPC 2024 ANNUAL REPORT
9

ENGAGED AND ENERGIZED WORKFORCE 
We believe our people are our greatest strength. They have enabled 
us to accomplish so much, and we have ambitious goals that 
inspire our continued progress. We demonstrate our commitment to 
attracting, developing and retaining talent by empowering our people, 
prioritizing accountability, upholding a culture of safety, providing 
extensive leadership and professional development opportunities, 
recognizing and rewarding accomplishments, and offering benefits 
that support the well-being of our employees and their families.
We strive to create a collaborative and supportive environment where 
all contributions are valued, and we build on each other’s strengths 
and talents. This enables us to realize the full potential of our teams – 
embracing our differences while proving each day that we are better 
together. As part of our ongoing effort to make MPC a great place 
to work, we provide opportunities for employees to share feedback 
through various forums, including targeted pulse surveys and focus 
groups. Understanding our employees’ experiences and hearing 
their perspectives provide insights that enable us to strengthen 
and better position the company and our people for the future.
	y Identify and pursue renewable 
opportunities that offer attractive returns, 
lower costs, increase reliability and 
reduce emissions
	y Deploy emerging technologies that 
reduce environmental impact while 
enhancing business performance
RENEWABLES AND EMERGING TECHNOLOGIES 
At MPC, we have a long history of innovation that continues today. We seek to optimize our core fuels manufacturing and logistics 
businesses and expand our natural gas business while making strategic, measured investments in renewable and low-carbon energy 
solutions, emerging technologies and early-stage developments. 
We believe energy supply and technologies will continue to evolve, and we are excited to be engaged in their evolution. 
Hydrocarbon fuels are critical to today’s economy and are likely to continue to be for the foreseeable future. Optimizing how they are 
produced and delivered is important to energy markets, strategic to our business and foundational to our environmental stewardship 
commitment. Our investments in renewable fuels serve our customers and make contributions to reducing the carbon intensity of our 
products. In 2024, we were one of the largest suppliers of renewable fuels in the U.S., delivering approximately 2.8 billion gallons of 
renewable fuel to customers.   
SUSTAINABILITY
Key Objectives
Investing in Our People
   Promoting a Culture of Safety
   Embracing Inclusion
   Fostering Employee Engagement
   Developing Employees and Leaders
   Offering Competitive  
Compensation and Benefits
   Supporting Employee  
Giving and Volunteerism
MPC expanded its portfolio in 2023 to 
include renewable natural gas (RNG) through 
acquisition of a 49.9% interest in LF Bioenergy, 
a renewable energy developer that builds, owns 
and operates facilities that turn organic waste on dairy 
farms into RNG. Since then, LF Bioenergy has initiated 
commercial operations at four facilities and has three 
additional sites under development across the U.S.
Our renewable diesel facility in Martinez, 
California, which we co-own through our 
Martinez Renewables joint venture with Neste 
Corporation, has a capacity of 730 million 
gallons per year and includes pretreatment capabilities. 
The facility reached full capacity in late 2024, placing it 
among the largest renewable diesel facilities in the world.
MPC 2024 ANNUAL REPORT
10

SUSTAINABILITY
ENGAGING OUR STAKEHOLDERS AND 
COMMUNITIES
Our sustainability efforts are guided by ongoing dialogue with 
stakeholders to inform our understanding of the issues and trends 
facing our company and industry. We seek to build genuine 
relationships, define mutual priorities and identify resources that create 
shared value in pursuit of common goals. We maintain several types 
of dedicated forums to facilitate internal and external engagement on 
a range of significant topics. Leaders and teams at our facilities are 
guided to engage key stakeholders and audiences according to each 
unique relationship. This tailored approach helps us to address needs 
specific to each community.
We recognize that our offices and facilities are integral parts of the 
communities where they are located, and we continually look for ways 
to make a positive, measurable impact for our neighbors. Centered 
around strengthening communities and helping make people's lives 
better, we focus on contributions and partnerships with charitable 
organizations that reflect the priorities of our community stakeholders, 
align with our Core Values, and amplify our sustainability strategy. 
Additionally, we encourage employees to support the organizations 
and community efforts that are important to them by matching their 
donations to eligible organizations and funding volunteer incentive 
awards.
In 2024, the company invested approximately $24 million in the 
communities where we live and work as well as broader causes. Our 
employees contributed more than $4 million in additional support. The 
company also raised more than $5 million for charitable causes through 
fundraising events, many of which engaged our business partners, 
customers and suppliers.
ACCOUNTABLE AND TRANSPARENT GOVERNANCE
Our Board of Directors provides oversight for our operations, risks 
and strategic direction. We believe strong governance benefits all our 
stakeholders and is critical to achieving long-term shareholder value. 
We approach governance in a strategic and thoughtful manner, taking 
into consideration multiple perspectives and continuously evaluating 
opportunities to enhance.
In 2024, as part of our ongoing Board refreshment process, we 
welcomed three new independent directors: Kimberly N. Ellison-
Taylor, Eileen P. Paterson and Jeffrey C. Campbell. Together, they bring 
expertise in technology, operations, finance and risk management to 
our Board. Consistent with our Corporate Governance Principles, we 
remain committed to ensuring that the Board’s membership represents 
a wide variety of skills, professional experience, backgrounds and 
perspectives, which we believe is critical to the effectiveness of the 
Board and its oversight function.
After many years of valuable contributions, dedicated service and 
leadership, three current members of our Board — Charles A. Bunch, 
Edward G. Galante and Susan Tomasky — will retire from the Board 
following MPC’s Annual Meeting of Shareholders on April 30, 2025. 
We are grateful for their dedicated service.
Community 
Investment 
Priorities 
Workforce 
Development
Sustainability
Thriving 
Communities
MPC 2024 ANNUAL REPORT
11

BOARD OF DIRECTORS
Committee Member Key
A   Audit Committee
C   Compensation and Organization Development Committee  
G   Corporate Governance and Nominating Committee  
S   Sustainability and Public Policy Committee  
Michael J. Hennigan
Executive Chairman,  
Marathon Petroleum Corporation 
Abdulaziz F. Alkhayyal
Retired Senior Vice President,  
Industrial Relations, Saudi Aramco
A   Member   C   Member    S   Member
Charles E. Bunch*
Retired Chairman of the Board and  
Chief Executive Officer, PPG Industries, Inc.
C   Member    G   Chair
Jonathan Z. Cohen
Founder, Chief Executive Officer and President, 
Hepco Capital Management, LLC
A   Member    G   Member
Edward G. Galante*
Retired Senior Vice President and Management 
Committee Member, ExxonMobil Corporation
C   Chair    S   Member
Eileen P. Paterson 
Former Chief Executive Officer and  
President, Aerojet Rocketdyne Holdings, Inc.
C   Member    S   Member
Frank M. Semple
Retired Chairman, President and Chief Executive 
Officer, MarkWest Energy Partners, L.P.
A   Member   C   Member 
Susan Tomasky*
Retired President, AEP Transmission,  
American Electric Power
A   Chair    S   Member
John P. Surma
Retired Chairman and Chief Executive Officer, 
United States Steel Corporation 
Independent Lead Director
Evan Bayh
Senior Advisor, Apollo Global Management
G   Member    S   Chair
Jeffrey C. Campbell
Former Vice Chairman and Chief Financial Officer, 
American Express Company
A   Member     C   Member
Kimberly N. Ellison-Taylor 
Former Executive Director of Finance  
Thought Leadership, Oracle Corporation
A   Member    G   Member 
Maryann T. Mannen
President and Chief Executive Officer, Marathon 
Petroleum Corporation
S   Member
Kim K.W. Rucker
Former Executive Vice President,  
General Counsel and Secretary, Andeavor
A   Member   C   Member    S   Member
J. Michael Stice
Professor, The University of Oklahoma
A   Member     G   Member    S   Member
*Retiring from the Board following MPC’s Annual Meeting of Shareholders on April 30, 2025.
MPC 2024 ANNUAL REPORT
12

LEADERSHIP TEAM
Maryann T. Mannen
President and Chief Executive Officer
Timothy J. Aydt
Executive Vice President  
Refining
Fiona C. Laird
Chief Human Resources Officer and  
Senior Vice President, Communications
Rick D. Hessling
Chief Commercial Officer
Ehren D. Powell
Senior Vice President and  
Chief Digital Officer
Erin M. Brzezinski
Vice President and Controller
Kelly S. Niese
Vice President 
Treasury
Gregory S. Floerke
Executive Vice President and  
Chief Operating Officer 
MPLX GP LLC
Rebecca L. Iten
Vice President and Controller 
MPLX GP LLC
John J. Quaid
Executive Vice President and  
Chief Financial Officer
Molly R. Benson
Chief Legal Officer and  
Corporate Secretary
David R. Heppner
Chief Strategy Officer and  
Senior Vice President, Business Development
Brian K. Partee
Chief Global Optimization Officer
James R. Wilkins
Senior Vice President   
Health, Environment, Safety and Security
Kristina A. Kazarian
Vice President  
Finance and Investor Relations
C. Kristopher Hagedorn
Executive Vice President and  
Chief Financial Officer  
MPLX GP LLC
Shawn M. Lyon
Senior Vice President 
Logistics and Storage  
MPLX GP LLC
MPC 2024 ANNUAL REPORT
13


                                                                                                                                                                                                                                                     
UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K 
(Mark One)
☒
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2024 
OR
☐
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from                      to                     
Commission file number 001-35054 
Marathon Petroleum Corporation 
(Exact name of registrant as specified in its charter)
Delaware
27-1284632
(State or other jurisdiction of incorporation or organization)
(I.R.S. Employer Identification No.)
539 South Main Street, Findlay, OH 45840-3229 
(Address of principal executive offices) (Zip code)
(419) 422-2121 
(Registrant’s telephone number, including area code)
Securities Registered pursuant to Section 12(b) of the Act
Title of each class
 Trading symbol(s)
Name of each exchange on which registered
Common Stock, par value $.01
MPC
New York Stock Exchange
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities 
Act. Yes ☑    No ☐
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. 
Yes ☐    No ☑
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities 
Exchange Act of 1934 during the preceding 12 months and (2) has been subject to such filing requirements for the past 90 days. 
Yes ☑    No ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 
pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period 
that the registrant was required to submit such files). Yes ☑    No ☐
Indicate by check mark whether the registrant is a large accelerated filer, accelerated filer, a non-accelerated filer, a smaller 
reporting company, or an emerging growth company. See definition of “large accelerated filer,” “accelerated filer,” “smaller 
reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act: 
Large accelerated filer ☑    Accelerated filer ☐    Non-accelerated filer ☐    Smaller reporting company ☐    Emerging growth 
company ☐ 
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for 
complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the 
effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) 
by the registered public accounting firm that prepared or issued its audit report. ☑ 
If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the 
registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-
based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to § 
240.10D-1(b). ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐    No ☑
As of June 30, 2024, the aggregate market value of common stock held by non-affiliates was approximately $59.0 billion, based 
on the closing price of the registrant’s common stock on the New York Stock Exchange on June 28, 2024, the last trading day of 
the registrant’s most recently completed second fiscal quarter. Shares of common stock held by executive officers and directors 
of the registrant are not included in the computation. The registrant, solely for the purpose of this required presentation, has 
deemed its directors and executive officers to be affiliates.
There were 312,575,833 shares of Marathon Petroleum Corporation common stock outstanding as of February 21, 2025.
Documents Incorporated by Reference
Portions of the registrant’s proxy statement relating to its 2025 Annual Meeting of Shareholders, to be filed with the Securities 
and Exchange Commission pursuant to Regulation 14A under the Securities Exchange Act of 1934, are incorporated by 
reference to the extent set forth in Part III, Items 10-14 of this Report.

Table of Contents
 
Page
PART I
Item 1.
Business
4
Item 1A.
Risk Factors
18
Item 1B.
Unresolved Staff Comments
31
Item 1C.
Cybersecurity
31
Item 2.
Properties
33
Item 3.
Legal Proceedings
40
Item 4.
Mine Safety Disclosures
42
PART II
Item 5.
Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities
43
Item 7.
Management’s Discussion and Analysis of Financial Condition and Results of Operations
44
Item 7A.
Quantitative and Qualitative Disclosures about Market Risk
71
Item 8.
Financial Statements and Supplementary Data
75
Item 9.
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
129
Item 9A.
Controls and Procedures
129
Item 9B.
Other Information
129
Item 9C.
Disclosures Regarding Foreign Jurisdictions that Prevent Inspections
129
PART III
Item 10.
Directors, Executive Officers and Corporate Governance
130
Item 11.
Executive Compensation
130
Item 12.
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
131
Item 13.
Certain Relationships and Related Transactions, and Director Independence
131
Item 14.
Principal Accountant Fees and Services
131
PART IV
Item 15.
Exhibits and Financial Statement Schedules
132
Signatures
137
Unless otherwise stated or the context otherwise indicates, all references in this Annual Report on Form 10-K to “MPC,” “us,” 
“our,” “we” or the “Company” mean Marathon Petroleum Corporation and its consolidated subsidiaries.


Glossary of Terms
Throughout this report, the following company or industry specific terms and abbreviations are used:
ANS
Alaska North Slope crude oil, an oil index benchmark price
ASC
Accounting Standards Codification
ASU
Accounting Standards Update
ATB
Articulated tug barges
barrel
One stock tank barrel, or 42 U.S. gallons liquid volume, used in reference to crude oil or other liquid 
hydrocarbons
CARB
California Air Resources Board
CARBOB
California Reformulated Gasoline Blendstock for Oxygenate Blending
CBOB
Conventional Gasoline Blendstock for Oxygenate Blending
EBITDA
Earnings Before Interest, Tax, Depreciation and Amortization (a non-GAAP financial measure)
EPA
U.S. Environmental Protection Agency
ESG
Environmental, social and governance
FASB
Financial Accounting Standards Board
GAAP
Accounting principles generally accepted in the United States
GHG
Greenhouse gas
LCFS
Low Carbon Fuel Standard
LIFO
Last in, first out
mbbls
Thousands of barrels
mbpd
Thousands of barrels per day
mbpcd
Thousand barrels per calendar day
MEH
Magellan East Houston crude oil, an oil index benchmark price
MMcf/d
One million cubic feet of natural gas per day
MMBtu
One million British thermal units
MPLX
MPLX LP
NGLs
Natural gas liquids, such as ethane, propane, butanes and natural gasoline
NYMEX
New York Mercantile Exchange
NYSE
New York Stock Exchange
OSHA
U.S. Occupational Safety and Health Administration
OTC
Over-the-Counter
RFS2
Revised Renewable Fuel Standard program, as required by the Energy Independence and Security Act 
of 2007
RIN
Renewable Identification Number
SEC
U.S. Securities and Exchange Commission
SOFR
Secured overnight financing rate
STAR
South Texas Asset Repositioning
ULSD
Ultra-low sulfur diesel
USGC
U.S. Gulf Coast
UST
Underground storage tank
VIE
Variable interest entity
VPP
Voluntary Protection Program
WTI
West Texas Intermediate crude oil, an oil index benchmark price
1

Disclosures Regarding Forward-Looking Statements
This Annual Report on Form 10-K, particularly Item 1. Business, Item 1A. Risk Factors, Item 3. Legal Proceedings, Item 7. 
Management’s Discussion and Analysis of Financial Condition and Results of Operations and Item 7A. Quantitative and 
Qualitative Disclosures about Market Risk includes forward-looking statements that are subject to risks, contingencies or 
uncertainties. You can identify forward-looking statements by words such as “anticipate,” “believe,” “commitment,” “could,” 
“design,” “estimate,” “expect,” “focus,” “forecast,” “goal,” “guidance,” “intend,” “may,” “objective,” “opportunity,” “outlook,” “plan,” 
“policy,” “position,” “potential,” “predict,” “priority,” “project,” “prospective,” “pursue,” “seek,” “should,” “strategy,” “target,” “will,” 
“would” or other similar expressions that convey the uncertainty of future events or outcomes. 
Forward-looking statements include, among other things, statements regarding: 
•
future financial and operating results; 
•
ESG plans and goals, including those related to GHG emissions and intensity, freshwater withdraw intensity, inclusion 
and ESG reporting;
•
future levels of capital, environmental or maintenance expenditures, general and administrative and other expenses; 
•
the success or timing of completion of ongoing or anticipated capital or maintenance projects; 
•
business strategies, growth opportunities and expected investments, including plans to improve commercial 
performance, lower costs and optimize our asset portfolio; 
•
consumer demand for refined products, natural gas, renewable diesel and other renewable fuels and NGLs; 
•
the timing, amount and form of any future capital return transactions, including dividends and share repurchases by 
MPC or distributions and unit repurchases by MPLX; and
•
the anticipated effects of actions of third parties such as competitors, activist investors, federal, foreign, state or local 
regulatory authorities or plaintiffs in litigation. 
Our forward-looking statements are not guarantees of future performance, and you should not rely unduly on them, as they 
involve risks, uncertainties and assumptions that we cannot predict. Forward-looking and other statements regarding our ESG 
plans and goals are not an indication that these statements are material to investors or required to be disclosed in our filings with 
the SEC. In addition, historical, current, and forward-looking ESG-related statements may be based on standards for measuring 
progress that are still developing, internal controls and processes that continue to evolve, and assumptions that are subject to 
change in the future. Material differences between actual results and any future performance suggested in our forward-looking 
statements could result from a variety of factors, including the following:
•
general economic, political or regulatory developments, including inflation, tariffs, interest rates, changes in 
governmental policies relating to refined petroleum products, crude oil, natural gas, NGLs or renewable diesel and other 
renewable fuels or taxation;
•
the regional, national and worldwide availability and pricing of refined products, crude oil, natural gas, renewable diesel 
and other renewable fuels, NGLs and other feedstocks;
•
disruptions in credit markets or changes to credit ratings;
•
the adequacy of capital resources and liquidity, including availability, timing and amounts of free cash flow necessary to 
execute business plans and to effect any share repurchases or to maintain or increase the dividend;
•
the potential effects of judicial or other proceedings on our business, financial condition, results of operations and cash 
flows;
•
the timing and extent of changes in commodity prices and demand for crude oil, refined products, feedstocks or other 
hydrocarbon-based products or renewable diesel and other renewable fuels;
•
volatility in or degradation of general economic, market, industry or business conditions, including as a result of 
pandemics, other infectious disease outbreaks, natural hazards, extreme weather events, regional conflicts such as 
hostilities in the Middle East and in Ukraine, inflation or rising interest rates;
•
our ability to comply with federal and state environmental, economic, health and safety, energy and other policies and 
regulations and enforcement actions initiated thereunder;
•
adverse market conditions or other risks affecting MPLX;
•
refining industry overcapacity or under capacity;
•
foreign imports and exports of crude oil, refined products, natural gas and NGLs;
•
the establishment or increase of tariffs on goods, including crude oil and other feedstocks imported into the United 
States, other trade protection measures or restrictions or retaliatory actions from foreign governments;
•
changes in producer customers’ drilling plans or in volumes of throughput of crude oil, natural gas, NGLs, refined 
products, other hydrocarbon-based products or renewable diesel and other renewable fuels;
•
non-payment or non-performance by our customers;
2

•
changes in the cost or availability of third-party vessels, pipelines, railcars and other means of transportation for crude 
oil, natural gas, NGLs, feedstocks, refined products and renewable diesel and other renewable fuels;
•
the price, availability and acceptance of alternative fuels and alternative-fuel vehicles and laws mandating such fuels or 
vehicles;
•
political and economic conditions in nations that consume refined products, natural gas, renewable diesel and other 
renewable fuels and NGLs, including the United States and Mexico, and in crude oil producing regions, including the 
Middle East, Russia, Africa, Canada and South America;
•
actions taken by our competitors, including pricing adjustments, the expansion and retirement of refining capacity and 
the expansion and retirement of pipeline capacity, processing, fractionation and treating facilities in response to market 
conditions;
•
completion of pipeline projects within the United States;
•
changes in fuel and utility costs for our facilities;
•
industrial incidents or other unscheduled shutdowns affecting our refineries, machinery, pipelines, processing, 
fractionation and treating facilities or equipment, means of transportation, or those of our suppliers or customers;
•
acts of war, terrorism or civil unrest that could impair our ability to produce refined products, receive feedstocks or to 
gather, process, fractionate or transport crude oil, natural gas, NGLs, refined products or renewable diesel and other 
renewable fuels;
•
political pressure and influence of environmental groups and other stakeholders that are adverse to the production, 
gathering, refining, processing, fractionation, transportation and marketing of crude oil or other feedstocks, refined 
products, natural gas, NGLs, other hydrocarbon-based products or renewable diesel and other renewable fuels;
•
labor and material shortages; 
•
the timing and ability to obtain necessary regulatory approvals and permits and to satisfy other conditions necessary to 
complete planned projects or to consummate planned transactions within the expected timeframe, if at all;
•
the inability or failure of our joint venture partners to fund their share of operations and capital investments;
•
the financing and distribution decisions of joint ventures we do not control;
•
the availability of desirable strategic alternatives to optimize portfolio assets and the ability to obtain regulatory and 
other approvals with respect thereto;
•
our ability to successfully implement our sustainable energy strategy and principles and achieve our ESG goals and 
targets within the expected timeframe, if at all; 
•
the costs, disruption and diversion of management’s attention associated with campaigns commenced by activist 
investors; 
•
personnel changes; 
•
the imposition of windfall profit taxes, maximum margin penalties or minimum inventory requirements on companies 
operating in the energy industry in California or other jurisdictions; and
•
the other factors described in Item 1A. Risk Factors.
We undertake no obligation to update any forward-looking statements except to the extent required by applicable law.
3

PART I
Item 1. Business
OVERVIEW
MPC has more than 135 years of history in the energy business, and is a leading, integrated, downstream energy company. We 
operate one of the nation's largest refining systems with approximately 3.0 million barrels per day of crude oil refining capacity 
and believe we are one of the largest wholesale suppliers of gasoline and distillates to resellers in the United States. We 
distribute our refined products through one of the largest terminal operations in the United States and one of the largest private 
domestic fleets of inland petroleum product barges. Our integrated midstream energy asset network links producers of natural 
gas and NGLs from some of the largest supply basins in the United States to domestic and international markets. In addition, we 
are one of the largest producers and marketers of renewable diesel in the United States. 
In the fourth quarter of 2024, we established a Renewable Diesel segment, which includes renewable diesel activities and assets 
historically reported in the Refining & Marketing segment. Prior period segment information has been recast for comparability.
Our operations consist of three reportable operating segments: Refining & Marketing, Midstream and Renewable Diesel. Each of 
these segments is organized and managed based upon the nature of the products and services it offers.
•
Refining & Marketing – refines crude oil and other feedstocks at our refineries in the Gulf Coast, Mid-Continent and 
West Coast regions of the United States, purchases refined products and ethanol for resale and distributes refined 
products through transportation, storage, distribution and marketing services provided largely by our Midstream 
segment. We sell refined products to wholesale marketing customers domestically and internationally, to buyers on the 
spot market, to independent entrepreneurs who operate primarily Marathon® branded outlets and through long-term 
supply contracts with direct dealers who operate locations mainly under the ARCO® brand.
•
Midstream – gathers, transports, stores and distributes crude oil, refined products, including renewable diesel, and other 
hydrocarbon-based products principally for the Refining & Marketing segment via refining logistics assets, pipelines, 
terminals, towboats and barges; gathers, processes and transports natural gas; and transports, fractionates, stores and 
markets NGLs. The Midstream segment primarily reflects the results of MPLX. MPLX is a diversified, large-cap master 
limited partnership (“MLP”) formed in 2012 that owns and operates midstream energy infrastructure and logistics assets 
and provides fuels distribution services. As of December 31, 2024, we owned the general partner of MPLX and 
approximately 64 percent of the outstanding MPLX common units.
•
Renewable Diesel – processes renewable feedstocks into renewable diesel, markets renewable diesel and distributes 
renewable diesel through our Midstream segment and third parties. We sell renewable diesel to wholesale marketing 
customers, to buyers on the spot market and through long-term supply contracts with direct dealers who operate 
locations mainly under the ARCO® brand.
Corporate History and Structure
MPC was incorporated in Delaware on November 9, 2009 in connection with an internal restructuring of Marathon Oil 
Corporation (“Marathon Oil”). On May 25, 2011, the Marathon Oil board of directors approved the spinoff of its Refining, 
Marketing & Transportation Business into an independent, publicly traded company, MPC, through the distribution of MPC 
common stock to the stockholders of Marathon Oil on June 30, 2011. Our common stock trades on the NYSE under the ticker 
symbol “MPC.” 
On October 1, 2018, we acquired Andeavor. Andeavor shareholders received in the aggregate approximately 239.8 million 
shares of MPC common stock valued at $19.8 billion and $3.5 billion in cash. Andeavor was a highly integrated marketing, 
logistics and refining company operating primarily in the Western and Mid-Continent United States. Our acquisition of Andeavor 
in 2018 substantially increased our geographic diversification and the scale of our assets, which provides increased opportunities 
to optimize our system.
On May 14, 2021, we completed the sale of Speedway, LLC (“Speedway”), our company-owned and operated retail 
transportation fuel and convenience store business, to 7-Eleven, Inc. (“7-Eleven”) for cash proceeds of $21.38 billion 
($17.22 billion after cash-tax payments). This transaction resulted in a pretax gain of $11.68 billion ($8.02 billion after income 
taxes), after deducting the book value of the net assets and certain other adjustments.
4

OUR OPERATIONS
Refining & Marketing
Refineries
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 2,963 mbpcd. During 2024, our refineries processed 2,714 mbpd of crude oil and 208 
mbpd of other charge and blendstocks. During 2023, our refineries processed 2,677 mbpd of crude oil and 226 mbpd of other 
charge and blendstocks. 
Our refineries include crude oil atmospheric and vacuum distillation, fluid catalytic cracking, hydrocracking, catalytic reforming, 
coking, desulfurization and sulfur recovery units. The refineries process a wide variety of condensate and light and heavy crude 
oils purchased from various domestic and foreign suppliers. We produce numerous refined products, ranging from transportation 
fuels, such as reformulated gasolines, blend-grade gasolines intended for blending with ethanol and ULSD fuel, to heavy fuel oil 
and asphalt. Additionally, we manufacture NGLs and petrochemicals and propane. See the Refined Product Sales section for 
further information about the products we produce. 
Our refineries are largely integrated with each other via pipelines, terminals and barges to maximize operating efficiency. The 
transportation links that connect our refineries allow the movement of intermediate products between refineries to optimize 
operations, produce higher margin products and efficiently utilize our processing capacity. Also, shipping intermediate products 
between facilities during partial refinery shutdowns allows us to utilize processing capacity that is not directly affected by the 
shutdown work.
Planned maintenance activities, or turnarounds, requiring temporary shutdown of certain refinery operating units, are periodically 
performed at each refinery.
Following is a description of each of our refineries and their capacity by region.
Gulf Coast Region (1,237 mbpcd)
Galveston Bay, Texas City, Texas Refinery (631 mbpcd) 
Our Galveston Bay refinery is a combination of our former Texas City refinery and Galveston Bay refinery. Following the 
completion of the STAR project in 2023, which added 40 mbpcd of capacity, it is now our largest refinery. The refinery is located 
on the Texas Gulf Coast southeast of Houston, Texas and can process a wide variety of crude oils into gasoline, distillates, NGLs 
and petrochemicals, heavy fuel oil and propane. The refinery has access to the export market and multiple options to sell refined 
products. Our cogeneration facility, which supplies the Galveston Bay refinery, currently has 1,055 megawatts of electrical 
production capacity and can produce 4.3 million pounds of steam per hour. Approximately 47 percent of the power generated in 
2024 was used at the refinery, with the remaining electricity being sold into the electricity grid.
Garyville, Louisiana Refinery (606 mbpcd) 
Our Garyville refinery is located along the Mississippi River in southeastern Louisiana between New Orleans, Louisiana and 
Baton Rouge, Louisiana. The Garyville refinery is configured to process a wide variety of crude oils into gasoline, distillates, 
NGLs and petrochemicals, propane, asphalt and heavy fuel oil. The refinery has access to the export market and multiple 
options to sell refined products. Our Garyville refinery has earned designation as an OSHA VPP Star site.
Mid-Continent Region (1,174 mbpcd)
Catlettsburg, Kentucky Refinery (300 mbpcd)
Our Catlettsburg refinery is located in northeastern Kentucky on the western bank of the Big Sandy River, near the confluence 
with the Ohio River. The Catlettsburg refinery processes sweet and sour crude oils, including production from the nearby Utica 
Shale, into gasoline, distillates, asphalt, NGLs and petrochemicals, propane and heavy fuel oil. Our Catlettsburg refinery has 
earned designation as an OSHA VPP Star site. 
Robinson, Illinois Refinery (253 mbpcd) 
Our Robinson refinery is located in southeastern Illinois. The Robinson refinery processes sweet and sour crude oils into 
gasoline, distillates, NGLs and petrochemicals, propane and heavy fuel oil. The Robinson refinery has earned designation as an 
OSHA VPP Star site.
Detroit, Michigan Refinery (144 mbpcd) 
Our Detroit refinery is located in southwest Detroit. It is the only petroleum refinery currently operating in Michigan. The Detroit 
refinery processes sweet and heavy sour crude oils into gasoline, distillates, NGLs and petrochemicals, asphalt, propane and 
heavy fuel oil. Our Detroit refinery has earned designation as an OSHA VPP Star site. 
5

El Paso, Texas Refinery (133 mbpcd) 
Our El Paso refinery is located east of downtown El Paso. The El Paso refinery processes sweet and sour crude oils into 
gasoline, distillates, heavy fuel oil, propane, asphalt and NGLs and petrochemicals. 
St. Paul Park, Minnesota Refinery (105 mbpcd) 
Our St. Paul Park refinery is located along the Mississippi River southeast of St. Paul Park. The St. Paul Park refinery processes 
sweet and heavy sour crude oils into gasoline, distillates, asphalt, NGLs and petrochemicals, propane and heavy fuel oil.
Canton, Ohio Refinery (100 mbpcd) 
Our Canton refinery is located south of Cleveland, Ohio. The Canton refinery processes sweet and sour crude oils, including 
production from the nearby Utica Shale, into gasoline, distillates, asphalt, propane, NGLs and petrochemicals and heavy fuel oil. 
The Canton refinery has earned designation as an OSHA VPP Star site.
Mandan, North Dakota Refinery (71 mbpcd) 
Our Mandan refinery is located outside of Bismarck, North Dakota. The Mandan refinery processes primarily sweet domestic 
crude oil from North Dakota into gasoline, distillates, heavy fuel oil, propane and NGLs and petrochemicals.
Salt Lake City, Utah Refinery (68 mbpcd) 
Our Salt Lake City refinery is the largest in Utah and is located north of downtown Salt Lake City. The Salt Lake City refinery 
processes crude oil from Utah, Colorado, Wyoming and Canada into gasoline, distillates, heavy fuel oil, NGLs and 
petrochemicals and propane.
West Coast Region (552 mbpcd)
Los Angeles, California Refinery (365 mbpcd) 
Our Los Angeles refinery is located in Los Angeles County, near the Los Angeles Harbor. The Los Angeles refinery is the largest 
refinery on the West Coast and is a major producer of cleaner burning CARB fuels. The Los Angeles refinery processes heavy 
crude oil from California’s San Joaquin Valley and Los Angeles Basin, as well as crude oils from the Alaska North Slope, South 
America, West Africa and other international sources, into CARB gasoline and CARB diesel fuel, as well as conventional 
gasoline, distillates, NGLs and petrochemicals, propane and heavy fuel oil.
Anacortes, Washington Refinery (119 mbpcd) 
Our Anacortes refinery is located north of Seattle on Puget Sound. The Anacortes refinery processes Canadian crude oil, 
domestic crude oil from North Dakota and the Alaska North Slope and international crude oils into gasoline, distillates, heavy fuel 
oil, propane and NGLs and petrochemicals.
Kenai, Alaska Refinery (68 mbpcd)
Our Kenai refinery is located on the Cook Inlet, southwest of Anchorage. The Kenai refinery processes mainly Alaska domestic 
crude oil, domestic crude oil from North Dakota, along with limited international crude oil into distillates, gasoline, heavy fuel oil, 
asphalt, NGLs and petrochemicals and propane.
Refined Product Yields
The following table sets forth our refinery production by product group for each of the last three years.
(mbpd)
2024
2023
2022
Gasoline
 
1,490 
 
1,526 
 
1,494 
Distillates
 
1,070 
 
1,037 
 
1,068 
Propane
 
67 
 
66 
 
70 
NGLs and petrochemicals
 
192 
 
182 
 
178 
Heavy fuel oil
 
59 
 
52 
 
73 
Asphalt
 
81 
 
80 
 
89 
Total
 
2,959 
 
2,943 
 
2,972 
6

Crude Oil Supply
We obtain the crude oil we refine through negotiated term contracts and purchases or exchanges on the spot market. Our term 
contracts generally have market-related pricing provisions. The following table provides information on our sources of crude oil 
for each of the last three years. The crude oil sourced outside of North America was acquired from various foreign national oil 
companies, production companies and trading companies.
(mbpd)
2024
2023
2022
United States
 
1,840 
 
1,782 
 
1,895 
Canada
 
604 
 
597 
 
539 
Other international
 
270 
 
298 
 
327 
Total
 
2,714 
 
2,677 
 
2,761 
Our refineries receive crude oil and other feedstocks and distribute our refined products through a variety of channels, including 
pipelines, trucks, railcars, ships and barges. 
Refined Product Sales
Our refined products are sold to independent retailers, wholesale customers, our brand jobbers and direct dealers. In addition, 
we sell refined products for export to international customers. As of December 31, 2024, there were 7,738 brand jobber outlets in 
39 states, the District of Columbia and Mexico where independent entrepreneurs primarily maintain Marathon-branded outlets. 
We also have long-term supply contracts for 1,161 direct dealer locations primarily in Southern California, largely under the 
ARCO® brand. We believe we are one of the largest wholesale suppliers of gasoline and distillates to resellers and consumers 
within our market area.
The following table sets forth our refined product sales volumes by product group for each of the last three years.
(mbpd)
2024(a)
2023(a)
2022(a)
Gasoline
 
1,922 
 
1,933 
 
1,870 
Distillates
 
1,187 
 
1,128 
 
1,160 
NGLs and petrochemicals
 
231 
 
220 
 
220 
Asphalt
 
82 
 
82 
 
89 
Propane
 
104 
 
90 
 
93 
Heavy fuel oil
 
59 
 
57 
 
66 
Total
 
3,585 
 
3,510 
 
3,498 
(a) 
Refined product sales include volumes marketed directly to end-users and trading/supply volumes such as bulk sales to large unbranded 
resellers and other downstream companies. Marketed volumes directly to end-users, including branded retail stations, were 2,429 mbpd, 
2,385 mbpd and 2,356 mbpd for the years ended December 31, 2024, 2023 and 2022, respectively. 
Refined Product Sales Destined for Export
We sell gasoline, distillates and asphalt for export, primarily out of our Garyville, Galveston Bay, Anacortes and Los Angeles 
refineries. The following table sets forth our refined product sales destined for export by product group for the past three years.
(mbpd)
2024
2023
2022
Gasoline
 
116 
 
119 
 
105 
Distillates
 
199 
 
156 
 
158 
Other
 
55 
 
64 
 
52 
Total
 
370 
 
339 
 
315 
Gasoline and Distillates 
We sell gasoline, gasoline blendstocks and distillates (including No. 1 and No. 2 fuel oils, jet fuel, kerosene and diesel) to 
wholesale customers, branded jobbers, direct dealers and on the spot market. In addition, we sell diesel fuel and gasoline for 
export to international customers. The demand for gasoline and distillates is seasonal in many of our markets, with demand 
typically at its highest levels during the summer months.
NGLs and Petrochemicals
We are a producer and marketer of NGLs and petrochemicals. Product availability varies by refinery and includes, among others, 
propylene, butane, xylene, benzene, cumene and toluene. We market these products domestically to customers in the chemical, 
7

agricultural and fuel-blending industries. In addition, we produce fuel-grade coke at our Garyville, Detroit, Galveston Bay and Los 
Angeles refineries, which is used for power generation and in miscellaneous industrial applications, and anode-grade coke at our 
Los Angeles and Robinson refineries, which is used to make carbon anodes for the aluminum smelting industry.
Asphalt
We have refinery-based asphalt production capacity of 143 mbpcd, which includes asphalt cements, polymer-modified asphalt, 
emulsified asphalt, industrial asphalts and roofing flux. We have a broad customer base, including asphalt-paving contractors, 
resellers, government entities (states, counties, cities and townships) and asphalt roofing shingle manufacturers. We sell asphalt 
in the domestic and export wholesale markets via rail, barge and vessel.
Propane
We produce propane at all of our refineries. Propane is primarily used for home heating and cooking, as a feedstock within the 
petrochemical industry, for grain drying and as a fuel for trucks and other vehicles. Our propane sales are split approximately 80 
percent and 20 percent between the home heating market and industrial/petrochemical consumers, respectively.
Heavy Fuel Oil
We produce and market heavy residual fuel oil or related components, including slurry, at all of our refineries. Heavy residual fuel 
oil is primarily used in the utility and ship bunkering (fuel) industries, though there are other more specialized uses of the product.
Refining & Marketing Joint Ventures
We hold a 49.9 percent ownership interest in ethanol production facilities in Albion, Michigan; Logansport, Indiana; Greenville, 
Ohio and Denison, Iowa. These plants have a combined ethanol production capacity of approximately 405 million gallons per 
year and are managed by our joint venture partner, The Andersons, Inc. (“The Andersons”).
We hold a 49.9 percent equity interest in LF Bioenergy, an emerging producer of renewable natural gas (“RNG”) in the U.S. LF 
Bioenergy has been focused on developing and growing a portfolio of dairy farm-based, low carbon intensity RNG projects. 
Currently, there are four facilities in operation, with three additional facilities under construction that are expected to come online 
over the next 12 months.
Terminals and Transportation
We transport, store and distribute crude oil, feedstocks and refined products through pipelines, terminals and marine fleets 
owned by MPLX and third parties in our market areas. 
We own a fleet of transport trucks and trailers for the movement of refined products and crude oil. In addition, we maintain a fleet 
of leased and owned railcars for the movement and storage of refined products.
The locations and detailed information about our Refining & Marketing assets are included under Item 2. Properties and are 
incorporated herein by reference. 
Competition, Market Conditions and Seasonality
The downstream petroleum business is highly competitive, particularly with regard to accessing crude oil and other feedstock 
supply and the marketing of refined products. We compete with a number of other companies to acquire crude oil for refinery 
processing and in the distribution and marketing of a full array of refined products.
We compete in four distinct markets for the sale of refined products—wholesale, including exports, spot, branded and retail 
distribution. Our marketing operations compete with numerous other independent marketers, integrated oil companies and high-
volume retailers. We compete with companies in the sale of refined products to wholesale marketing customers, including 
private-brand marketers and large commercial and industrial consumers; companies in the sale of refined products on the spot 
market; and refiners or marketers in the supply of refined products to refiner-branded independent entrepreneurs. In addition, we 
compete with producers and marketers in other industries that supply alternative forms of energy and fuels to satisfy the 
requirements of our industrial, commercial and retail consumers.
Market conditions in the oil and gas industry are cyclical and subject to global economic and political events and new and 
changing governmental regulations. Our operating results are affected by price changes in crude oil, natural gas and refined 
products, as well as changes in competitive conditions in the markets we serve. Price differentials between sweet and sour crude 
oils, ANS, WTI and MEH crude oils and other market structure impacts also affect our operating results. 
Demand for gasoline, diesel fuel and asphalt is higher during the spring and summer months than during the winter months in 
most of our markets, primarily due to seasonal increases in highway traffic and construction. As a result, the operating results for 
our Refining & Marketing segment for the first and fourth quarters may be lower than for those in the second and third quarters of 
each calendar year.
8

Midstream 
The Midstream segment primarily includes the operations of MPLX, our sponsored MLP, and certain related operations retained 
by MPC.
MPLX
MPLX owns and operates a network of crude oil, natural gas and refined product pipelines and has joint ownership interests in 
crude oil, refined products and other pipelines. MPLX also owns and operates light products terminals, storage assets and 
maintains a fleet of owned and leased towboats and barges in support of fuels distribution on behalf of MPC. MPLX’s assets also 
include natural gas gathering systems and natural gas processing and NGL fractionation complexes. 
MPC-Retained Midstream Assets and Investments 
We own four Jones Act medium range product tankers, three Jones Act 750 Series ATB vessels and have ownership interests in 
several crude oil and refined products pipeline systems and pipeline companies. 
The locations and detailed information about our Midstream assets are included under Item 2. Properties and are incorporated 
herein by reference. 
Competition, Market Conditions and Seasonality
Our Midstream operations face competition for natural gas gathering, crude oil transportation and in obtaining natural gas 
supplies for our processing and related services; in obtaining unprocessed NGLs for gathering, transportation and fractionation; 
and in marketing our products and services. Competition for natural gas supplies is based primarily on the location of gas 
gathering systems and gas processing plants, operating efficiency and reliability, residue gas and NGL market connectivity, the 
ability to obtain a satisfactory price for products recovered and the fees charged for the services supplied to the customer. 
Competition for oil supplies is based primarily on the price and scope of services, location of gathering/transportation and storage 
facilities and connectivity to the best priced markets. Competitive factors affecting our fractionation services include availability of 
fractionation capacity, proximity to supply and industry marketing centers, the fees charged for fractionation services and 
operating efficiency and reliability of service. Competition for customers to purchase our natural gas and NGLs is based primarily 
on price, credit and market connectivity. In addition, certain of our Midstream operations are subject to rate regulation, which 
affects the rates that our common carrier pipelines can charge for transportation services and the return we obtain from such 
pipelines.
Our Midstream segment can be affected by seasonal fluctuations in the demand for natural gas and NGLs and the related 
fluctuations in commodity prices caused by various factors such as changes in transportation and travel patterns and variations 
in weather patterns from year to year. 
Renewable Diesel
Our Renewable Diesel segment includes a wholly owned facility that processes renewable feedstocks into renewable diesel and 
renewable joint ventures that produce renewable diesel and renewable feedstocks.
Wholly Owned Renewable Processing Facilities
The Dickinson, North Dakota renewables facility has the capacity to produce 184 million gallons per year of renewable diesel 
from corn oil, soybean oil, fats and greases. The produced renewable diesel generates federal RINs and LCFS credits when sold 
in California or similar markets. These instruments are used to help meet our Renewable Fuel Standard and LCFS compliance 
obligations as a petroleum fuel producer. 
We own an aggregation facility in Cincinnati, Ohio and a pre-treatment facility in Beatrice, Nebraska. These facilities supply 
renewable agricultural feedstocks to our Dickinson and Martinez facilities.
Renewable Diesel Joint Ventures
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. The Martinez Renewables facility, which 
has the capacity to produce 730 million gallons per year including pretreatment capabilities, reached full capacity in late 2024. 
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. Green Bison Soy Processing’s 
complex in Spiritwood, North Dakota sources and processes local soybeans and supplies the resulting soybean oil exclusively to 
MPC and has capacity to produce approximately 600 million pounds of refined soybean oil annually, enough feedstock for 
approximately 75 million gallons of renewable diesel per year. 
Competition, Market Conditions and Seasonality
The renewable diesel business is evolving, particularly with regard to regulatory credits, access to renewable feedstock supply 
and the marketing of renewable products. We compete with a number of other companies in acquiring various renewable 
9

feedstocks for processing and in the distribution and marketing of renewable diesel and renewable naphtha, primarily on the 
West Coast.
We compete in three distinct markets for the sale of renewable diesel—wholesale, spot and retail distribution. We compete with 
companies in the sale of renewable diesel to wholesale marketing customers, including private-brand marketers and large 
commercial and industrial consumers; companies in the sale of renewable diesel on the spot market; and refiners or marketers in 
the supply of renewable diesel to refiner-branded independent entrepreneurs. In addition, we compete with producers and 
marketers in other industries that supply alternative forms of energy and fuels to satisfy the requirements of our industrial, 
commercial and retail consumers.
Market conditions in the renewable diesel industry are cyclical and subject to global economic and political events and new and 
changing governmental regulations. Our operating results are affected by price changes in renewable feedstocks as well as 
changes in competitive conditions in the markets we serve. Price differentials between the various renewable feedstocks also 
affect our operating results. 
Demand for renewable diesel may increase during the spring and summer months due to seasonal increases in agricultural 
activities. As a result, the operating results for our renewable segment for the first and fourth quarters may be lower than for 
those in the second and third quarters of each calendar year.
REGULATORY MATTERS
Our operations are subject to numerous laws and regulations, including those relating to the protection of the environment. Such 
laws and regulations include, among others, the Clean Air Act (“CAA”) with respect to air emissions, the Clean Water Act (“CWA”) 
with respect to water discharges, the Resource Conservation and Recovery Act (“RCRA”) with respect to solid and hazardous 
waste treatment, storage and disposal, the Comprehensive Environmental Response, Compensation, and Liability Act 
(“CERCLA”) with respect to releases and remediation of hazardous substances and the Oil Pollution Act of 1990 (“OPA-90”) with 
respect to oil pollution and response. In addition, many states where we operate have similar laws. New laws are being enacted 
and regulations are being adopted on a continuing basis, and the costs of compliance with such new laws and regulations are 
very difficult to estimate until finalized.
For a discussion of environmental capital expenditures and costs of compliance, see Item 7. Management’s Discussion and 
Analysis of Financial Condition and Results of Operations-Environmental Matters and Compliance Costs. For additional 
information regarding regulatory risks, see Item 1A. Risk Factors.
Rate Regulation
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. The ICA and FERC regulations require that tariff rates for oil pipelines, a 
category that includes crude oil and petroleum product pipelines, be just and reasonable and the terms and conditions of service 
must not be unduly discriminatory. The ICA permits interested persons to challenge newly proposed tariff rates or terms and 
conditions of service, or any change to tariff rates or terms and conditions of service, and authorizes FERC to suspend the 
effectiveness of such proposal or change for a period of time to investigate. If, upon completion of an investigation, FERC finds 
that the new or changed service or rate is unlawful, it is authorized to require the carrier to refund the revenues in excess of the 
prior tariff collected during the pendency of the investigation. An interested person may also challenge existing terms and 
conditions of service or rates and FERC may order a carrier to change its terms and conditions of service or rates prospectively. 
Upon an appropriate showing, a shipper may also obtain reparations, from a pipeline, for damages sustained as a result of rates 
or terms which FERC deemed were not just and reasonable. Such reparation damages may accrue from the complaint through 
the final order and during the two years prior to the filing of a complaint.
EPAct 1992 deemed certain interstate petroleum pipeline rates then in effect to be just and reasonable under the ICA. These 
rates are commonly referred to as “grandfathered rates.” Our rates for interstate transportation service in effect for the 365-day 
period ending on the date of the passage of EPAct 1992 were deemed just and reasonable and therefore are grandfathered. 
Subsequent changes to those rates are not grandfathered. New rates have since been established after EPAct 1992 for certain 
pipelines, and certain of our pipelines have subsequently been approved to charge market-based rates.
FERC permits regulated oil pipelines to change their rates within prescribed ceiling levels that are tied to an inflation index. A 
carrier must, as a general rule, utilize the indexing methodology to change its rates. Cost-of-service ratemaking, market-based 
rates and settlement rates are alternatives to the indexing approach and may be used in certain specified circumstances to 
change rates.
Air
GHG Emissions
Currently, legislative and regulatory measures to address GHG emissions are in various phases of review, discussion or 
implementation. Reductions in GHG emissions could result in increased costs to (i) operate and maintain our facilities, (ii) install 
10

new emission controls at our facilities, (iii) capture the emissions from our facilities and (iv) administer and manage any GHG 
emissions programs, including acquiring emission credits or allotments.
Congress has from time to time considered legislation to regulate GHG emissions, and it is possible that such legislation could 
be enacted in the future. In the absence of federal climate legislation in the United States, certain states and regions have 
adopted, or are considering, rules regulating GHG emissions. These measures may include state actions to develop statewide or 
regional programs to report emissions and impose emission reductions. These measures may also include low-carbon fuel 
standards, such as the California program, or a state carbon tax. These measures could result in increased costs to operate and 
maintain our facilities, capital expenditures to install new emission controls and costs to administer any carbon trading or tax 
programs implemented. For example, California has enacted a cap-and-trade program. Much of the compliance costs associated 
with the California program are ultimately passed on to the consumer in the form of higher fuel costs. States are increasingly 
announcing aspirational goals to be net-zero carbon emissions by a certain date through both legislation and executive orders. 
To date, these states have not provided significant details as to achievement of these goals; however, meeting these aspirations 
will require a reduction in fossil fuel combustion and/or a mechanism to capture GHGs from the atmosphere. As a result, we 
cannot currently predict the impact of these potential regulations on our liquidity, financial position, or results of operations.
International jurisdictions have adopted or are considering adopting laws related to the disclosure and regulation of GHG 
emissions. For example, the European Union Emissions Trading System (“ETS”) is a cap-and-trade type program. GHG 
emissions from maritime transport became subject to the ETS in 2024. These laws could result in increased costs to distribute 
our products to foreign jurisdictions.
On December 2, 2023, EPA issued its final rule to regulate methane emissions from the Oil and Natural Gas Sector. The rule 
titled “Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: 
Oil and Gas Sector Climate Review” requires MPLX to control and reduce methane emissions within its natural gas gathering 
and boosting operations and gas processing facilities. The rule is consistent with the voluntary methane reduction programs that 
MPLX has been implementing through its Focus on Methane Program. As a result, although the rule requires MPLX to make 
additional investments to further reduce methane emissions, we do not believe the rule will have a material impact to our 
operations. 
Other Air Emissions
The CAA and comparable state laws restrict the emission of air pollutants from many sources and impose various monitoring and 
reporting requirements. These laws and any implementing regulations may require us to obtain pre-approval for the construction 
or modification of certain projects or facilities expected to produce or significantly increase air emissions, obtain and strictly 
comply with stringent air permit requirements, utilize specific equipment or technologies to control emissions, or aggregate two or 
more of our facilities into one application for permitting purposes. We believe that our operations are in substantial compliance 
with applicable air permitting and control technology requirements. However, we may be required to incur capital expenditures 
and may continue to incur capital expenditures in the future for installation of air pollution control equipment and may encounter 
construction or operational delays while applying for, or awaiting the review, processing and issuance of, new or amended 
permits, and we may be required to modify certain of our operations which could increase our operating costs.
In February 2024, EPA released a final rule to lower the primary (health-based) fine particulate matter annual standard from its 
current level of 12.0 µg/m3 to 9.0 µg/m3. Lowering of the National Ambient Air Quality Standards (“NAAQS”) and subsequent 
designation as a nonattainment area could result in increased costs associated with, or result in cancellation or delay of, capital 
projects at our or our customers’ facilities, or could require emission reductions that could result in increased costs to us or our 
customers. We cannot predict the effects of the various state implementation plan requirements at this time.
In California, the Governing Board for the South Coast Air Quality Management District (“SCAQMD”) adopted Rule 1109.1 in 
November 2021, which establishes Best Available Retrofit Control Technology (“BARCT”) oxides of nitrogen (“NOx”) and carbon 
monoxide (“CO”) emission limits for combustion equipment at petroleum refineries. These new requirements will replace the 
Regional Clean Air Incentives Market (“RECLAIM”) cap-and-trade program which has required a staged refinery-wide reduction 
of NOx emissions over the last several years and will result in additional emission reductions from our Los Angeles Refinery. 
Compliance with Rule 1109.1 is being phased in through 2032 and will result in increased costs to operate and maintain our Los 
Angeles Refinery.
Water
Our operations are subject to the CWA, the Safe Drinking Water Act (“SWDA”) and comparable state and local requirements. 
These laws prohibit discharge into surface waters, ground waters, injection wells and publicly-owned treatment works except in 
conformance with legal authorization. We maintain numerous pre-treatment permits and discharge permits as required under the 
National Pollutant Discharge Elimination System program of the CWA and have implemented systems to oversee our compliance 
with these permits. The CWA also regulates filling or discharges to wetlands and other “waters of the United States.” The scope 
of water bodies and wetlands covered under the definition of “waters of the United States” has evolved through various 
rulemakings and court decisions. To the extent the federal rule does not apply, an analogous state law may apply.
In addition, we are regulated under OPA-90, which, among other things, requires the owner or operator of a tank vessel or a 
facility to maintain an emergency plan to respond to releases of oil or hazardous substances. OPA-90 also requires the 
11

responsible company to pay resulting removal costs and damages and provides for civil penalties and criminal sanctions for 
violations of its provisions. We operate tank vessels and facilities from which spills of oil and hazardous substances could occur. 
We have implemented emergency oil response plans for all of our components and facilities covered by OPA-90 and we have 
established Spill Prevention, Control and Countermeasures plans for all facilities subject to such requirements. Some coastal 
states in which we operate have passed state laws similar to OPA-90, but with expanded liability provisions, that include 
provisions for cargo owner responsibility as well as ship owner and operator responsibility.
As part of our emergency response activities, we have used aqueous film forming foam (“AFFF”) containing per- and 
polyfluoroalkyl substances (“PFAS”) chemicals as a vapor and fire suppressant. At this time, AFFFs containing PFAS are the 
most effective foams to prevent and control a flammable petroleum-based liquid fire involving a large storage tank or tank 
containment area. Fluorine-free firefighting foams are currently under development but have not yet proven to be as effective as 
AFFFs containing PFAS.
In May 2016, EPA issued lifetime health advisory levels (“HALs”) and health effects support documents for two PFAS substances 
- perfluorooctanoic acid (“PFOA”) and perfluorooctane sulfonate (“PFOS”). These HALs were updated in June 2022, when EPA 
also issued HALs for two additional PFAS substances. In February 2019, EPA issued a PFAS Action Plan identifying actions it is 
planning to take to study and regulate various PFAS chemicals. EPA identified that it would evaluate, among other actions, (1) 
proposing national drinking water standards for PFOA and PFOS, (2) developing cleanup recommendations for PFOA and 
PFOS, (3) evaluating the listing of PFOA and PFOS as hazardous substances under CERCLA, and (4) conducting toxicity 
assessments for other PFAS chemicals. Also, on April 26, 2024, EPA issued a final rule establishing national drinking water 
standards for PFOS, PFOA, perfluorohexane sulfonic acid (“PFHxS”), perfluorononanoic acid (“PFNA”), perfluorobutane sulfonic 
acid (“PFBS”), and hexafluoropropylene oxide dimer acid and its ammonium salt (also known as “GenX”). Congress may also 
take further action to regulate PFAS. We cannot currently predict the impact of these regulations on our operations.
In addition, many states are actively proposing and adopting legislation and regulations relating to the use of AFFFs containing 
PFAS. Additionally, many states are using EPA HALs for PFOS and PFOA and some states are adopting and proposing state-
specific drinking water and cleanup standards for various PFAS, including but not limited to PFOS and PFOA. We cannot 
currently predict the impact of these regulations on our liquidity, financial position, or results of operations.
Solid and Hazardous Waste
We continue to seek methods to minimize the generation of solid and hazardous wastes in our operations. RCRA establishes 
standards for the management of solid and hazardous wastes. We may incur liability under RCRA, and comparable or more 
stringent state statutes, which impose requirements relating to the handling and disposal of non-hazardous and hazardous 
wastes. It is possible that some wastes generated by us that are currently classified as non-hazardous wastes may in the future 
be designated as hazardous wastes, resulting in the wastes being subject to more rigorous and costly transportation, storage, 
treatment and disposal requirements. Besides affecting waste disposal practices, RCRA also addresses the environmental 
effects of certain past waste disposal operations, the recycling of wastes and the regulation of USTs containing regulated 
substances.
Remediation
We own or operate, or have owned or operated, certain convenience stores and other locations where, during the normal course 
of operations, releases of refined products from USTs have occurred. Federal and state laws require that contamination caused 
by such releases at these sites be assessed and remediated to meet applicable standards. A portion of these remediation costs 
may be recoverable from the appropriate state UST reimbursement funds once the applicable deductibles have been satisfied. 
We also have ongoing remediation projects at a number of our current and former refinery and midstream locations. For a 
discussion of environmental capital expenditures and costs of compliance, see Item 7. Management’s Discussion and Analysis of 
Financial Condition and Results of Operations-Environmental Matters and Compliance Costs.
Claims under CERCLA and similar state acts have been raised with respect to the clean-up of various waste disposal and other 
sites. CERCLA is intended to facilitate the clean-up of hazardous substances without regard to fault. Potentially responsible 
parties for each site include present and former owners and operators of, transporters to and generators of the hazardous 
substances at the site. Liability is strict and can be joint and several. Because of various factors including the difficulty of 
identifying the responsible parties for any particular site, the complexity of determining the relative liability among them, the 
uncertainty as to the most desirable remediation techniques and the amount of damages and clean-up costs and the time period 
during which such costs may be incurred, we are unable to reasonably estimate our ultimate cost of compliance with CERCLA; 
however, we do not believe such costs will be material to our business, financial condition, results of operations or cash flows. 
RCRA and similar state laws may also impose liability for removing or remediating releases of hazardous or non-hazardous 
wastes from impacted properties.
The EPA’s rule designating PFOS and PFOA as hazardous substances under CERCLA Section 102(a) became effective on July 
8, 2024. In addition, EPA has received three petitions requesting regulatory action on PFAS under RCRA and in February 2024, 
proposed two regulations that would add nine PFAS, including PFOA and PFOS, to the list of RCRA hazardous constituents and 
broaden the definition of hazardous waste applicable to corrective action requirements at hazardous waste treatment, storage, 
and disposal facilities. We cannot currently predict the impact of potential statutes or regulations on our remediation costs.
12

Vehicle and Fuel Requirements
Fuel Economy and GHG Emission Standards for Vehicles
The National Highway Traffic Safety Administration (“NHTSA”) establishes corporate average fuel economy (“CAFE”) standards 
for passenger cars and light trucks. In addition, EPA establishes carbon dioxide (“CO2”) emission standards for passenger cars 
and light trucks. A presidential executive order issued on August 5, 2021, set a goal that 50 percent of all new passenger cars 
and light trucks sold in 2030 be zero emission vehicles. Consistent with this order, EPA and NHTSA promulgated separate rules 
setting more stringent requirements through model year 2026. NHTSA’s CAFE standards increase in stringency from model year 
2023 levels by eight percent annually for model years 2024-2025 and ten percent annually for model year 2026. EPA’s model 
year 2023-2026 CO2 emission standards result in average fuel economy of 40 mpg in model year 2026. Subsequently, NHTSA 
and EPA finalized new rules setting even more stringent requirements for model years 2027-2032. NHTSA’s standards would 
require an increase in fuel efficiency of two percent annually. EPA’s standards would require a significant increase in electric 
vehicle production to meet the standards. These NHTSA and EPA regulations have been challenged in court. In addition, the 
executive order setting the 50 percent zero emission vehicle goal has since been rescinded. Higher CAFE and CO2 emission 
standards for cars and light trucks reduce demand for our transportation fuels.
In addition, California may establish different, more stringent vehicle standards that could apply in multiple states if granted a 
Clean Air Act waiver by the EPA. The EPA reinstated California’s waiver for its Advanced Clean Cars I program, which includes 
requirements for zero emission vehicle sales through 2025. Following an executive order issued by the Governor, the California 
Air Resources Board (“CARB”) finalized its Advanced Clean Cars II regulation, which bans the sale of internal combustion engine 
vehicles in California in 2035. In December 2024, EPA granted California’s waiver for its Advanced Clean Cars II program. Other 
states have issued, or may issue, zero emission vehicle mandates consistent with California’s programs. 
Renewable Fuels Standards and Low Carbon Fuel Standards
Pursuant to the Energy Policy Act of 2005 and the EISA, Congress established a Renewable Fuel Standard (“RFS”) program that 
requires annual volumes of renewable fuel be blended into domestic transportation fuel. The statutory volumes apply through 
calendar year 2022. After calendar year 2022, the statute gives EPA the authority to set the annual volumes. EPA has 
promulgated annual volumes for 2023-2025 that increase the volume of renewable fuel that must be blended year over year.
There is currently no regulatory method for verifying the validity of most RINs sold on the open market. We have developed a 
RIN integrity program to vet the RINs that we purchase, and we incur costs to audit RIN generators. Nevertheless, if any of the 
RINs that we purchase and use for compliance are found to be invalid, we could incur costs and penalties for replacing the 
invalid RINs.
In addition to the federal Renewable Fuel Standards, certain states have, or are considering, promulgation of state renewable or 
low carbon fuel standards. For example, California began implementing its LCFS in January 2011. In September 2015, the 
CARB approved the re-adoption of the LCFS, which became effective on January 1, 2016, to address procedural deficiencies in 
the way the original regulation was adopted. The LCFS was amended again in 2018 targeting a 20 percent reduction in fuel 
carbon intensity from a 2010 baseline by 2030. CARB’s recent amendments to the LCFS, which would increase the carbon 
intensity reduction from 20 percent to 30 percent by 2030, were disapproved by the California Office of Administrative Law 
(“OAL”) in February 2025. The CARB can rewrite and resubmit the amendments for OAL approval. We incur costs to comply with 
LCFS programs, and these costs may increase if the cost of LCFS credits increases.
In sum, the RFS has required, and may in the future continue to require, additional capital expenditures or expenses by us to 
accommodate increased renewable fuels use. We may experience a decrease in demand for refined products due to an increase 
in combined fleet mileage or due to refined products being replaced by renewable fuels. Demand for our refined products also 
may decrease as a result of low carbon fuel standard programs or electric vehicle mandates.
Safety Matters
We are subject to oversight pursuant to the federal Occupational Safety and Health Act, as amended (“OSH Act”), as well as 
comparable state statutes that regulate the protection of the health and safety of workers. We believe that we have conducted 
our operations in substantial compliance with regulations promulgated pursuant to the OSH Act, including general industry 
standards, record-keeping requirements and monitoring of occupational exposure to regulated substances.
We are also subject at regulated facilities to the Occupational Safety and Health Administration’s Process Safety Management 
and EPA’s Risk Management Program (“RMP”) requirements, which are intended to prevent or minimize the consequences of 
catastrophic releases of toxic, reactive, flammable or explosive chemicals. In 2024, EPA finalized revisions to its RMP regulation. 
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. The 
application of these regulations can result in increased compliance expenditures.
In general, we expect industry and regulatory safety standards to become more stringent over time, resulting in increased 
compliance expenditures. While these expenditures cannot be accurately estimated at this time, we do not expect such 
expenditures will have a material adverse effect on our results of operations.
13

The U.S. Department of Transportation (“DOT”) has adopted safety regulations with respect to the design, construction, 
operation, maintenance, inspection and management of our pipeline assets. These regulations contain requirements for the 
development and implementation of pipeline integrity management programs, which include the inspection and testing of 
pipelines and the correction of anomalies. These regulations also require that pipeline operation and maintenance personnel 
meet certain qualifications and that pipeline operators develop comprehensive spill response plans. 
Security
We have several facilities that are subject to the United States Coast Guard’s Maritime Transportation Security Act, and a 
number of other facilities that are subject to the Transportation Security Administration’s Pipeline Security Guidelines and are 
designated as “Critical Facilities.” We have an internal inspection program designed to monitor and ensure compliance with all of 
these requirements. We believe that we are in material compliance with all applicable laws and regulations regarding the security 
of our facilities.
Tribal Lands
Various federal agencies, including EPA and the Department of the Interior, along with certain Native American tribes, promulgate 
and enforce regulations pertaining to oil and gas operations on Native American tribal lands where we operate. These 
regulations include such matters as lease provisions, drilling and production requirements, and standards to protect 
environmental quality and cultural resources. In addition, each Native American tribe is a sovereign nation having the right to 
enforce certain laws and regulations and to grant approvals independent from federal, state and local statutes and regulations. 
These laws and regulations may increase our costs of doing business on Native American tribal lands and impact the viability of, 
or prevent or delay our ability to conduct, our operations on such lands.
TRADEMARKS, PATENTS AND LICENSES 
Our Marathon and ARCO trademarks are material to the conduct of our refining and marketing operations. We currently hold a 
number of U.S. and foreign patents and have various pending patent applications. Although in the aggregate our patents and 
licenses are important to us, we do not regard any single patent or license or group of related patents or licenses as critical or 
essential to our business as a whole. In general, we depend on our technological capabilities and the application of know-how 
rather than patents and licenses in the conduct of our operations.
HUMAN CAPITAL
We believe our employees are our greatest asset of strength, and our culture reflects the quality of individuals across our 
workforce. Our collaborative efforts, which include fostering an inclusive environment, providing broad-based development and 
mentorship opportunities, recognizing and rewarding accomplishments and offering benefits that support the well-being of our 
employees and their families, contribute to increased engagement and fulfilling careers. Empowering our people and prioritizing 
accountability are also key components for developing MPC’s high-performing culture, which is critical to achieving our strategic 
vision. 
Employee Profile
As of December 31, 2024, we employed approximately 18,300 people in full-time and part-time roles. Many of these employees 
provide services to MPLX, for which we are reimbursed in accordance with employee service agreements. Approximately 3,800 
of our employees are covered by collective bargaining agreements. 
Safety 
We are committed to safe operations to protect the health and safety of our employees, contractors and communities. Our 
commitment to safe operations is reflected in our safety systems design, our well-maintained equipment and by learning from our 
incidents. Part of our effort to promote safety includes our Operational Excellence Management System, which expands on the 
RC14001® scope, incorporates a Plan-Do-Check-Act continual improvement cycle, and aligns with ISO 9001, incorporating 
quality and an increased stakeholder and process focus. Together, these components of our safety management system provide 
us with a comprehensive approach to managing risks and preventing incidents, illnesses and fatalities. Additionally, our annual 
cash bonus program includes a broad set of measures tied to safety, environmental stewardship and human capital 
management.
Talent Management
Our People Strategy holistically addresses the dynamic business environment we operate in. It enables us to be an employer of 
choice in the face of shifting talent needs and availability. Executing our People Strategy requires that we attract and retain the 
best talent with the right capabilities when we need them. Attracting and retaining top talent involves presenting employees with 
the tools for success and providing opportunities for long-term engagement and career advancement. Our Talent Acquisition 
team consists of three segments: Executive Recruiting, Experienced Recruiting and University Recruiting. The specialization 
within each group allows us to specifically address MPC’s broad range of current and future talent needs, as well as devote time 
and attention to candidates during the hiring process. We believe each candidate brings a new perspective to our workforce, and 
we actively seek candidates with a variety of backgrounds and experience. 
14

We equip our employees at every level with classroom training, online courses and on the job activities that provide the 
knowledge and skills necessary to perform their daily job functions safely and successfully. Simultaneously, we support our 
employees with a wide range of career development programs, tools, and key talent processes to help them advance and grow 
their careers within MPC.
Compensation and Benefits 
To ensure we are offering competitive pay packages, we annually benchmark compensation, including base salaries, bonus 
levels and long-term incentive targets. Our annual bonus program, for which all employees are eligible, is a critical component of 
our compensation as it rewards employees for MPC’s achievement against preset goals, encouraging employee commitment 
and ownership of results. Employees in our senior leader pay grades, as well as most other leaders, receive long-term incentive 
awards annually to align their compensation to the interests of MPC shareholders and MPLX unitholders.
We offer comprehensive benefits that are also benchmarked annually, including medical, dental and vision insurance for our 
employees, their spouses or domestic partners, and their dependents. We also provide retirement programs, life insurance, 
family building and support programs, sick and disability benefits, education assistance, as well as support the well-being of our 
employees and their families through a comprehensive Employee Assistance Program and financial wellness tools. In addition, 
we encourage our employees to refresh and recharge by providing competitive vacation programs and paid parental leave 
benefits for birth mothers and nonbirth parents. Further, we award a significant number of college and trade school scholarships 
to high school senior children of our employees through the Marathon Petroleum Scholars Program. Both full-time and part-time 
employees are eligible for these benefits.
Inclusion
Inclusion is embedded in our People Strategy, guided by our core values, and supported by a dedicated team of subject matter 
experts and leadership. Our People Strategy is based on three pillars: building a diverse workforce, creating a more inclusive 
culture, and contributing to our thriving communities.
We promote inclusivity and respect among our employees. We recognize that when employees feel valued, it shows in their 
performance. Our employee networks are fundamental to achieving this goal and connect employees with others who have 
shared experiences. These seven groups use a member and ally model to promote inclusion - Asian, Black, Disability, Hispanic, 
LGBTQ+, Veterans and Women. Led by employees with involvement and support from executive sponsors, our networks 
connect colleagues from across the company and provide opportunities for development, networking, and community 
involvement.
EXECUTIVE OFFICERS 
Following is information about the executive officers and corporate officers of MPC:
Name
Age as of 
February 1, 2025
Position with MPC
Maryann T. Mannen
62
President and Chief Executive Officer
Michael J. Hennigan
65
Executive Chairman
John J. Quaid
53
Executive Vice President and Chief Financial Officer
Timothy J. Aydt
61
Executive Vice President Refining
Molly R. Benson
58
Chief Legal Officer and Corporate Secretary
Fiona C. Laird*
63
Chief Human Resources Officer and Senior Vice President Communications
David R. Heppner*
58
Chief Strategy Officer and Senior Vice President Business Development
Rick D. Hessling
58
Chief Commercial Officer
Brian K. Partee*
51
Chief Global Optimization Officer
Ehren D. Powell*
45
Senior Vice President and Chief Digital Officer 
James R. Wilkins*
58
Senior Vice President Health, Environment, Safety and Security
Erin M. Brzezinski
42
Vice President and Controller
Kristina A. Kazarian*
42
Vice President Finance and Investor Relations
Kelly S. Niese*
45
Vice President Treasury
Gregory S. Floerke
61
Executive Vice President and Chief Operating Officer of MPLX GP LLC
Shawn M. Lyon
57
Senior Vice President Logistics & Storage of MPLX GP LLC
* Corporate officer.
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Ms. Mannen was appointed President and Chief Executive Officer, and was elected a member of the Board, effective August 1, 
2024. She previously served as President since January 1, 2024, and as Executive Vice President and Chief Financial Officer 
from January 2021 through December 2023. Ms. Mannen also was appointed President and Chief Executive Officer of MPLX, 
effective August 1, 2024, and has served as a member of MPLX’s Board of Directors since February 2021. Before joining MPC, 
she served as Executive Vice President and Chief Financial Officer of TechnipFMC (a successor to FMC Technologies, Inc.), a 
leading global engineering services and energy technology company, since 2017, having previously served as Executive Vice 
President and Chief Financial Officer of FMC Technologies, Inc. since 2014, as Senior Vice President and Chief Financial Officer 
since 2011, and in various positions of increasing responsibility with FMC Technologies, Inc. since 1986. Ms. Mannen serves on 
the executive committee of the American Petroleum Institute (API), the executive committee of American Fuel and Petrochemical 
Manufacturers (AFPM), and the executive committee of the Ohio Business Roundtable, and is a member of The Business 
Council.
Mr. Hennigan was elected Executive Chairman, effective August 1, 2024, having previously served as Chief Executive Officer 
since January 1, 2024 and as President and Chief Executive Officer from March 2020 through December 2023. He has served 
as a member of the Board of Directors since April 2020. Mr. Hennigan also was elected Executive Chairman of the Board of 
MPLX effective August 1, 2024, having served as Chairman of the Board since April 2020, as Chief Executive Officer since 
November 2019 and as President since June 2017. Before joining MPLX, Mr. Hennigan was President, Crude, NGL and Refined 
Products, of the general partner of Energy Transfer Partners L.P., an energy service provider. He was President and Chief 
Executive Officer of Sunoco Logistics Partners L.P., an oil and gas transportation, terminalling and storage company, from 2012 
to 2017, President and Chief Operating Officer beginning in 2010, and Vice President, Business Development, beginning in 
2009.
Mr. Quaid was appointed Executive Vice President and Chief Financial Officer, effective January 1, 2024, having previously 
served as MPLX’s Executive Vice President and Chief Financial Officer since September 2021. He also has served as a member 
of MPLX’s Board since January 2022. Prior to his 2021 appointment at MPLX, Mr. Quaid served as our Senior Vice President 
and Controller beginning in April 2020, and as Vice President and Controller beginning in 2014. Before joining MPC, Mr. Quaid 
was Vice President of Iron Ore at United States Steel Corporation, an integrated steel producer, beginning in 2014, and Vice 
President and Treasurer beginning in 2011, having previously served in various functions including investor relations, business 
planning, financial planning and analysis and project management. 
Mr. Aydt was appointed Executive Vice President Refining, effective October 2022, having previously served as Executive Vice 
President and Chief Commercial Officer of MPLX since August 2020. Prior to his 2020 appointment, he served as Vice President, 
Business Development, beginning in November 2018, as Vice President, Operations, and President of Marathon Pipe Line LLC 
beginning in January 2017, as MPC’s Terminal, Transport and Rail General Manager beginning in 2013, and as Project Director 
for the $2.2 billion Detroit Heavy Oil Upgrade Project beginning in 2008. 
Ms. Benson was appointed Chief Legal Officer and Corporate Secretary, effective January 1, 2024, having previously served as 
Vice President, Chief Securities, Governance & Compliance Officer and Corporate Secretary since June 2018, and as Vice 
President, Chief Compliance Officer and Corporate Secretary since 2016. Prior to her 2016 appointment, Ms. Benson served as 
Assistant General Counsel, Corporate and Finance, beginning in 2012, and as Group Counsel, Corporate and Finance, 
beginning in 2011. 
Ms. Laird was appointed Chief Human Resources Officer and Senior Vice President Communications, effective February 2021, 
having previously served as Chief Human Resources Officer since October 2018. Prior to her 2018 appointment, she served as 
Chief Human Resources Officer at Andeavor since February 2018. Before joining Andeavor, Ms. Laird was Chief Human 
Resources and Communications Officer for Newell Brands, a global consumer goods company, beginning in May 2016 and 
Executive Vice President, Human Resources, for Unilever, a global consumer goods company, beginning in 2011.
Mr. Heppner was appointed Chief Strategy Officer and Senior Vice President Business Development, effective March 1, 2024, 
having previously served as Senior Vice President Strategy and Business Development since February 2021. Prior to his 2021 
appointment, he served as Vice President, Commercial and Business Development, beginning in October 2018, as Senior Vice 
President of Engineering Services and Corporate Support of Speedway LLC beginning in 2014, and as Director, Wholesale 
Marketing, beginning in 2010.
Mr. Hessling was appointed Chief Commercial Officer, effective January 1, 2024, having previously served as Senior Vice 
President, Global Feedstocks, since February 2021. Prior to his 2021 appointment, he served as Senior Vice President, Crude 
Oil Supply and Logistics, beginning in October 2018, as Manager, Crude Oil & Natural Gas Supply and Trading, beginning in 
2014, and as Crude Oil Logistics & Analysis Manager beginning in 2011.
Mr. Partee was appointed Chief Global Optimization Officer, effective January 1, 2024, having previously served as Senior Vice 
President, Global Clean Products, since February 2021. Prior to his 2021 appointment, he served as Senior Vice President, 
Marketing, beginning in October 2018, as Vice President, Business Development, beginning in February 2018, as Director of 
Business Development beginning in January 2017, as Manager of Crude Oil Logistics beginning in 2014, and as Vice President, 
Business Development and Franchise, at Speedway beginning in 2012. 
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Mr. Powell was appointed Senior Vice President and Chief Digital Officer, effective July 2020. Before joining MPC, he served as 
Vice President and Chief Information Officer (“CIO”) at GE Healthcare, a segment of General Electric Company (“GE”) that 
provides medical technologies and services, beginning in April 2018, having previously served as Senior Vice President and CIO, 
Services, of GE, a multinational conglomerate, since January 2017 and as CIO, Power Services, with GE Power since 2014, and 
in various positions of increasing responsibility with GE and its subsidiaries since 2000.
Mr. Wilkins was appointed Senior Vice President Health, Environment, Safety and Security, effective February 2021. Prior to this 
appointment, he served as Vice President, Environment, Safety and Security, beginning in October 2018, Director, Environment, 
Safety, Security and Product Quality, beginning in February 2016, and Director, Refining Environmental, Safety, Security and 
Process Safety Management, beginning in 2013.
Ms. Brzezinski was appointed Vice President and Controller, effective January 8, 2024. Prior to this appointment, she served as 
Assistant Controller, Technical Accounting, since August 2021, having previously served as Manager, Accounting, since May 
2019. Before joining MPC, Ms. Brzezinski was Director, Assurance and Audit Services, at PricewaterhouseCoopers LLP, a 
professional services and accounting firm, beginning in 2018, and Senior Manager beginning in 2013. She was Manager, 
Technical Accounting, at Cooper Tire & Rubber Company, an automotive tire manufacturer, from 2011 to 2013. Previously, Ms. 
Brzezinski served in positions of increasing responsibility with PricewaterhouseCoopers LLP beginning in 2004.
Ms. Kazarian was appointed Vice President Finance and Investor Relations, effective January 2023. Prior to this appointment, 
she served as Vice President, Investor Relations, beginning in April 2018. Before joining MPC, she was Managing Director and 
head of the MLP, Midstream and Refining Equity Research teams at Credit Suisse, a global investment bank and financial 
services company, beginning in September 2017. Previously, Ms. Kazarian was Managing Director of MLP, Midstream and 
Natural Gas Equity Research at Deutsche Bank, a global investment bank and financial services company, beginning in 2014, 
and an analyst specializing on various energy industry subsectors with Fidelity Management & Research Company, a privately 
held investment manager, beginning in 2005. 
Ms. Niese was appointed Vice President Treasury, effective January 2023. Prior to this appointment, she served as Assistant 
Treasurer beginning in February 2017, as Corporate Finance Manager beginning in October 2014, and as Brand Coordinating 
Manager beginning in 2011, having previously served in various analytical roles within Crude Supply, Terminals, Transportation 
and Rail and Internal Audit since joining MPC in 2003.
Mr. Floerke was appointed Executive Vice President and Chief Operating Officer of MPLX, effective February 2021, having 
previously served as Executive Vice President and Chief Operating Officer, Gathering and Processing, Trucks and Rail, since 
August 2020. Prior to his 2020 appointment, he served as Executive Vice President, Gathering and Processing, beginning in 
2018, as Executive Vice President and Chief Operating Officer, MarkWest Operations, beginning in July 2017, and as Executive 
Vice President and Chief Commercial Officer, MarkWest Assets, beginning in 2015, at the time of MPLX’s acquisition of 
MarkWest Energy Partners, L.P. Before joining MPLX, Mr. Floerke was Executive Vice President and Chief Commercial Officer at 
MarkWest beginning in 2015, and Senior Vice President, Northeast region, at MarkWest beginning in 2013. Previously, Mr. 
Floerke held senior management positions at Access Midstream Partners, L.P. from 2011 until 2013.
Mr. Lyon was appointed Senior Vice President Logistics and Storage of MPLX, effective September 2022, having previously 
served as Vice President, Operations, and President, Marathon Pipe Line LLC, since November 2018. Prior to his 2018 
appointment, he served as Vice President of Operations for Marathon Pipe Line LLC beginning in 2011. Previously, Mr. Lyon 
served in various roles of increasing responsibility with MPC since 1989, including as Manager, Marketing and Transportation 
Engineering beginning in 2010, and as District Manager, Transport and Rail beginning in 2008. He served as board chair for 
Liquid Energy Pipeline Association in 2023 and chairs the board of the Louisiana Offshore Oil Port (“LOOP”).
AVAILABLE INFORMATION
General information about MPC, including our Corporate Governance Principles, our Code of Business Conduct and our Code of 
Ethics for Senior Financial Officers, can be found on our website at www.marathonpetroleum.com/Investors/Corporate-
Governance/. We would post on our website any amendments to, or waivers from, either of our codes requiring disclosure under 
applicable rules within four business days following any such amendment or waiver. Charters for the Audit Committee, 
Compensation and Organization Development Committee, Corporate Governance and Nominating Committee and Sustainability 
and Public Policy Committee are also available on our website at www.marathonpetroleum.com/About/Board-of-Directors/.
We use our website, www.marathonpetroleum.com, as a channel for routine distribution of important information, including news 
releases, analyst presentations, financial information and market data. Our Annual Report on Form 10-K, Quarterly Reports on 
Form 10-Q and Current Reports on Form 8-K, as well as any amendments and exhibits to those reports, are available free of 
charge through our website as soon as reasonably practicable after the reports are filed or furnished with the SEC, or on the 
SEC’s website. The SEC maintains a website that contains reports, proxy and information statements and other information 
regarding issuers that file electronically with the SEC at www.sec.gov. These documents are also available in hard copy, free of 
charge, by contacting our Investor Relations office. In addition, our website allows investors and other interested persons to sign 
up to automatically receive email alerts when we post news releases and financial information on our website. Information 
contained on our website is not incorporated into this Annual Report on Form 10-K or other securities filings.
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Item 1A. Risk Factors 
You should carefully consider each of the following risks and all the other information contained in this Annual Report on Form 
10-K in evaluating us and our common stock. Although the risks are organized by headings, and each risk is discussed 
separately, many are interrelated. Our business, financial condition, results of operations and cash flows could be materially and 
adversely affected by these risks, and, as a result, the trading price of our common stock could decline. We have in the past 
been adversely affected by certain of, and may in the future be affected by, these risks. 
Business and Operational Risks
Our financial results are affected by volatile refining margins, which are dependent on factors beyond our control.
Our operating results, cash flows, future rate of growth, the carrying value of our assets and our ability to execute share 
repurchases and continue the payment of our base dividend are highly dependent on the margins we realize on our refined 
products. Historically, refining and marketing margins have been volatile, and we believe they will continue to be volatile. Our 
margins from the sale of gasoline and other refined products are influenced by a number of conditions, including the price of 
crude oil and other feedstocks. The prices of feedstocks and the prices at which we can sell our refined products fluctuate 
independently due to a variety of regional and global market factors that are beyond our control, including:
•
worldwide and domestic supplies of and demand for feedstocks and refined products; 
•
transportation infrastructure cost and availability;
•
operation levels of other refineries in our markets;
•
the development by competitors of new refining or renewable conversion capacity;
•
natural gas and electricity supply costs; 
•
political instability, threatened or actual terrorist incidents, armed conflict or other global political or economic conditions;
•
tariffs on goods, including crude oil and other feedstocks, imported into the United States;
•
local weather conditions; and
•
the occurrence of other risks described herein. 
Some of these factors can vary by region and may change quickly, adding to market volatility, while others may have longer-term 
effects. The longer-term effects of these and other factors on refining and marketing margins are uncertain. We generally 
purchase our feedstocks weeks before we refine them and sell the refined products. Price level changes during the period 
between purchasing feedstocks and selling the refined products from these feedstocks can have a significant effect on our 
financial results. We also purchase refined products manufactured by others for resale to our customers. Price changes during 
the periods between purchasing and reselling those refined products can have a material and adverse effect on our business, 
financial condition, results of operations and cash flows.
In early 2025, the new U.S. presidential administration announced broad-based tariffs on goods imported from certain countries 
where we purchase feedstocks, including a ten percent tariff on energy resources such as crude oil, natural gas and NGLs 
imported from Canada. Some of these tariffs have been stayed for brief periods of at least 30 days. If the provisions of those 
tariffs are maintained as proposed, we would expect added market volatility, with the longer term impacts to our refining and 
marketing margin uncertain. In addition, retaliatory tariffs imposed by other countries or other potential government actions, 
would likely result in further adverse impacts. 
Lower refining and marketing margins have in the past, and may in the future, lead us to reduce the amount of refined products 
we produce, which may reduce our revenues, income from operations and cash flows. Significant reductions in refining and 
marketing margins could require us to reduce our capital expenditures, impair the carrying value of our assets (such as property, 
plant and equipment, inventory or goodwill), and require us to re-evaluate practices regarding our repurchase activity and 
dividends.
Legal, technological, political and scientific developments regarding emissions, fuel efficiency and alternative fuel 
vehicles may decrease demand for liquid transportation fuels. 
Developments aimed at reducing vehicle emissions, increasing vehicle efficiency or reducing the sale of new internal combustion 
engine vehicles may decrease the demand and may increase the cost for our transportation fuels. EPA and NHTSA have 
promulgated separate rules setting more stringent requirements for vehicles. NHTSA’s current CAFE standards increase in 
stringency from model year 2023 levels by eight percent annually for model years 2024-2025 and ten percent annually for model 
year 2026. EPA’s model year 2023-2026 CO2 emission standards result in average fuel economy of 40 mpg in model year 2026. 
In addition, NHTSA and EPA finalized new rules setting even more stringent requirements for model years 2027-2032. NHTSA’s 
standards would require an increase in fuel efficiency of two percent annually. EPA’s standards would require a significant 
increase in electric vehicle production to meet the standards. 
In addition, California and several states have adopted regulations that require increased sales of electric vehicles. California, in 
particular, has passed several regulations mandating electric vehicles. These regulations include Advanced Clean Cars (“ACC”) 
18

I, ACC II, and Advanced Clean Trucks. California has received Clean Air Act waivers from U.S. EPA to implement these 
programs. 
Moreover, consumer acceptance and market penetration of electric, hybrid and alternative fuel vehicles continues to increase. In 
2021, several automobile manufacturers jointly announced their shared goal that 40-50 percent of their new vehicle sales be 
battery electric, fuel cell or plug-in hybrid vehicles by 2030. Other automobile manufacturers have similar, or more aggressive, 
goals with respect to vehicle electrification. Technological breakthroughs relating to renewable fuels or other fuel alternatives 
such as hydrogen or ammonia, or efficiency improvements for internal combustion engines could reduce demand for liquid 
transportation fuels.
Together, these trends and developments have had and are expected to continue to have an adverse effect on sales of our liquid 
transportation fuels, which in turn could have a material and adverse effect on our business, financial condition, results of 
operations and cash flows.
Our operations are subject to business interruptions and present inherent hazards and risks, which could adversely 
impact our results of operations and financial condition.
Our operations are subject to business interruptions, such as scheduled and unscheduled refinery turnarounds, unplanned 
maintenance, explosions, fires, refinery or pipeline releases, product quality incidents, power outages, severe weather, labor 
disputes, acts of terrorism, or other natural or man-made disasters. These types of incidents adversely affect our operations and 
may result in serious personal injury or loss of human life, significant damage to property and equipment, impaired ability to 
manufacture our products, environmental pollution, and substantial losses. We have experienced certain of these incidents in the 
past. 
For assets located near populated areas, the level of damage resulting from these incidents could be greater. In addition, we 
operate in and adjacent to environmentally sensitive waters where tanker, pipeline, rail car and refined product transportation and 
storage operations are closely regulated by federal, state and local agencies and monitored by environmental interest groups. 
Certain of our refineries receive crude oil and other feedstocks by tanker or barge. MPLX operates a fleet of boats and barges to 
transport light products, heavy oils, crude oil, renewable fuels, chemicals and feedstocks to and from our refineries and 
terminals. Transportation and storage of crude oil, other feedstocks and refined products over and adjacent to water involves 
inherent risk and subjects us to the provisions of the OPA-90 and state laws in U.S. coastal and Great Lakes states and states 
bordering inland waterways on which we operate, as well as international laws in the jurisdictions in which we operate. If we are 
unable to promptly and adequately contain any accident or discharge involving tankers, pipelines, rail cars or above ground 
storage tanks transporting or storing crude oil, other feedstocks or refined products, we may be subject to substantial liability. In 
addition, the service providers contracted to aid us in a discharge response may be unavailable due to weather conditions, 
governmental regulations or other local or global events. 
Damages resulting from an incident involving any of our assets or operations may result in our being named as a defendant in 
one or more lawsuits asserting potentially substantial claims or in our being assessed potentially substantial fines by 
governmental authorities.
We are increasingly dependent on the performance of our information technology systems and those of our third-party 
business partners and service providers.
We are increasingly dependent on our information technology systems and those of our third-party business partners and service 
providers for the safe and effective operation of our business. We rely on such systems to process, transmit and store electronic 
information, including financial records and regulated personal data, and to manage or support a variety of business processes, 
including our supply chain, pipeline operations, gathering and processing operations, credit card payments and authorizations at 
certain of our customers’ retail outlets, financial transactions, banking and numerous other processes and transactions. 
Our information systems (and those of our third-party business partners and service providers), including our cloud computing 
environments and operational technology environments, are subject to numerous and evolving cybersecurity threats and attacks, 
including ransomware and other malware, phishing and social engineering schemes, supply chain attacks, and advanced 
artificial intelligence attacks, which can compromise our ability to operate and the confidentiality, availability, and integrity of data 
in our systems or those of our third-party business partners and service providers. These and other cybersecurity threats may 
originate with criminal attackers, advanced persistent threats and nation-state actors, state-sponsored actors or employee error 
or malfeasance. Cybersecurity threat actors also may attempt to exploit vulnerabilities in software, including software commonly 
used by companies in cloud-based services and bundled software. Because the techniques used to obtain unauthorized access, 
or to disable or degrade systems, continuously evolve and some have become increasingly complex and sophisticated, and can 
remain undetected for a period of time despite efforts to detect and respond in a timely manner, we (and our third-party business 
partners and service providers) are subject to the risk of cyberattacks and cybersecurity incidents.
Our cybersecurity and infrastructure protection technologies, disaster recovery plans and systems, employee training and vendor 
risk management may not be sufficient to defend us against all unauthorized attempts to access our information or impact our 
systems. We and our third-party vendors and service providers have been and may in the future be subject to cybersecurity 
events and incidents of varying degrees. To date, the impacts of prior events and incidents have not had a material adverse 
effect on us.
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Cybersecurity incidents involving our information technology systems or those of our third-party business partners and service 
providers can result in theft, destruction, loss, misappropriation or release of confidential financial data, regulated personal data, 
intellectual property and other information; give rise to remediation or other expenses; result in litigation, claims and increased 
regulatory review, investigations, or scrutiny; reduce our customers’ willingness to do business with us; disrupt our operations 
and the services we provide to customers; and subject us to litigation and legal liability under international, U.S. federal and state 
laws. Any of such results could have a material adverse effect on our reputation, business, financial condition, results of 
operations and cash flows.
Increasing regulatory focus on and expanding laws related to data privacy issues could expose us to increased liability, 
subject us to lawsuits, investigations, reputational harm and increase costs and restrictions on our operations that 
could significantly and adversely affect our business.
Along with our own data and information collected in the normal course of our business, we collect, use, transfer and retain 
certain data that is subject to specific laws and regulations. The transfer and use of this data both domestically and across 
international borders is becoming increasingly complex. This data is subject to governmental regulation at international, federal, 
state and local levels in many areas of our business, including data privacy and security laws such as the European Union (“EU”) 
and United Kingdom (“UK”) versions of the General Data Protection Regulation (“GDPR”), and the California Consumer Privacy 
Act, as amended by the California Privacy Rights Act (“CCPA”). To date, comprehensive state privacy laws have been proposed 
or passed in more than twenty U.S. states. We also operate in other jurisdictions (such as Mexico, Peru and Singapore) that 
have issued, or are considering the issuance of, data privacy laws and regulations. Additionally, the U.S. Federal Trade 
Commission and multiple state attorneys general are interpreting federal and state consumer protection laws to impose 
standards for the online collection, use, dissemination and security of data as well as requiring disclosures regarding such 
practices. Existing and potential future data privacy laws pose increasingly complex compliance, monitoring and control 
obligations and could potentially elevate our costs and risk exposure. As the implementation, interpretation, and enforcement of 
such laws continue to progress and evolve, there may also be developments that amplify such costs and risk exposure. Any 
failure by us to comply with these laws and regulations, including as a result of a cybersecurity incident or privacy breach, could 
expose us to significant penalties and liabilities, including individual claims or consumer class actions, commercial litigation, 
administrative, and investigations or actions, regulatory intervention and sanctions or fines.
As we integrate artificial intelligence technologies into our processes, these technologies may present business, 
compliance and reputational risks.
Recent and continuously evolving technological advances in artificial intelligence (“AI”) and machine-learning technology present 
new opportunities and also pose new risks. Our introduction of these technologies into our processes may result in new or 
expanded risks and liabilities. Such risks and liabilities include enhanced governmental or regulatory scrutiny, litigation, 
compliance issues, ethical concerns, confidentiality or security risks, as well as other factors that could adversely affect our 
business, reputation, and financial results. The utilization of AI could also result in loss of intellectual property and subject us to 
heightened risks related to intellectual property infringement or misappropriation. The use of AI can lead to unintended 
consequences, including generating content that is inaccurate, misleading or otherwise flawed, or that results in unintended 
biases and discriminatory outcomes, which could harm our reputation and expose us to risks related to inaccuracies or errors in 
the output of such technologies. 
The availability and cost of renewable identification numbers and credits related to low carbon fuel programs and 
incentives could have an adverse effect on our financial condition and results of operations.
Congress established a Renewable Fuel Standard (“RFS”) program that requires annual volumes of renewable fuel be blended 
into domestic transportation fuel. 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 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. Additionally, states, including California, have adopted 
or are considering adopting LCFS programs, which include the generation and purchase of LCFS credits for compliance. 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. Prices are dependent upon a variety of factors, including EPA, LCFS, and other 
regulations, reduction of the benefits, the availability of RINs or credits for purchase, any of the products we produce are deemed 
not to qualify for compliance, and levels of transportation fuels produced, which can vary significantly from quarter to quarter. 
There is currently no regulatory method for verifying the validity of most RINs sold on the open market. We have developed a 
RIN integrity program to vet the RINs that we purchase, and we incur costs to audit RIN generators. Nevertheless, if any of the 
RINs that we purchase and use for compliance are found to be invalid, we could incur costs and penalties for replacing the 
invalid RINs. See Item 1. Business – Regulatory Matters for additional information on these and other regulatory compliance 
matters. 
Competitors that produce their own supply of feedstocks, own their own retail sites, or have greater financial resources 
may have a competitive advantage.
The refining and marketing industry is highly competitive with respect to both feedstock supply and refined petroleum products. 
We compete with many companies for available supplies of crude oil and other feedstocks, and we do not produce any of our 
crude oil feedstocks. Our competitors include multinational, integrated major oil companies that can obtain a significant portion of 
their feedstocks from company-owned production. Competitors that produce crude oil are at times better positioned to withstand 
periods of depressed refining margins or feedstock shortages. 
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We also compete with other companies for customers for our refined petroleum products. The independent entrepreneurs who 
operate primarily Marathon-branded outlets and the direct dealer locations we supply compete with other convenience store 
chains, outlets owned or operated by integrated major oil companies or their dealers or jobbers, and other well-recognized 
national or regional retail outlets, often selling transportation fuels and merchandise at very competitive prices. Non-traditional 
transportation fuel retailers, such as supermarkets, club stores and mass merchants, may be better able to withstand volatile 
market conditions or levels of low or no profitability in the retail segment of the market. The loss of market share by those who 
operate our branded outlets and the direct dealer locations we supply could adversely affect our business, financial condition, 
results of operations and cash flows.
We may be negatively impacted by inflation.
Increases in inflation may have an adverse effect on us. Such increases in inflation could impact the commodity markets 
generally, the overall demand for our products and services, our costs for labor, material and services and the margins we are 
able to realize on our products, all of which could have an adverse impact on our business, financial position, results of 
operations and cash flows. Inflation may also result in higher interest rates, which in turn would result in higher interest expense 
related to our variable rate indebtedness and any borrowings we undertake to refinance existing fixed rate indebtedness.
We are subject to interruptions of supply and increased costs as a result of our reliance on third-party transportation of 
crude oil and refined products.
We utilize the services of third parties to transport crude oil and refined products to and from our refineries. In addition to our own 
operational risks, we could experience interruptions of supply or increases in costs to deliver refined products to market if the 
ability of the pipelines, railways or vessels to transport crude oil or refined products is disrupted or limited because of weather 
events, accidents, labor disputes, governmental regulations or third-party actions. 
In particular, pipelines or railroads provide a nearly exclusive form of transportation of crude oil to, or refined products from, some 
of our refineries. A prolonged interruption, material reduction or cessation of service of such a pipeline or railway, whether due to 
private party or governmental action or other reason, or any other prolonged disruption of the ability of the trucks, pipelines, 
railways or vessels to transport crude oil or refined products to or from one or more of our refineries, can adversely affect us. 
A significant decrease in oil and natural gas production in MPLX’s areas of operation may adversely affect MPLX’s 
business, financial condition, results of operations and cash available for distribution to its unitholders, including MPC.
A significant portion of MPLX’s operations is dependent on the continued availability of natural gas and crude oil production. The 
production from oil and natural gas reserves and wells owned by its producer customers will naturally decline over time, which 
means that MPLX’s cash flows associated with these wells will also decline over time. To maintain or increase throughput levels 
and the utilization rate of MPLX’s facilities, MPLX must continually obtain new oil, natural gas, NGL and refined product supplies, 
which depend in part on the level of successful drilling activity near its facilities, its ability to compete for volumes from successful 
new wells and its ability to expand its system capacity as needed.
We have no control over the level of drilling activity in the areas of MPLX’s operations, the amount of reserves associated with 
the wells or the rate at which production from a well will decline. In addition, we have no control over producers or their 
production decisions, which are affected by demand, prevailing and projected energy prices, drilling costs, operational 
challenges, access to downstream markets, the level of reserves, geological considerations, governmental regulations and the 
availability and cost of capital. Reductions or changes in exploration or production activity in MPLX’s areas of operations could 
lead to reduced throughput on its pipelines and utilization rates of its facilities.
Fluctuations in energy prices can negatively affect drilling activity, production rates and investments by third parties in the 
development of new oil and natural gas reserves. The prices for oil, natural gas and NGLs depend upon factors beyond our 
control, including global and local demand, production levels, changes in interstate pipeline gas quality specifications, imports 
and exports, seasonality and weather conditions, alternative energy sources such as wind, solar and other renewable energy 
technologies, economic and political conditions domestically and internationally and governmental regulations. Sustained periods 
of low prices could result in producers deciding to limit their oil and gas drilling operations, which could substantially delay the 
production and delivery of volumes of oil, natural gas and NGLs to MPLX’s facilities and adversely affect their revenues and cash 
available for distribution to us. 
This impact may also be exacerbated in circumstances where MPLX’s compensation for services is commodity-based, which are 
more directly impacted by changes in natural gas and NGL prices than its fee-based contracts due to frac spread exposure and 
may result in operating losses when natural gas becomes more expensive on a Btu equivalent basis than NGL products. In 
addition, the purchase and resale of natural gas and NGLs in the ordinary course exposes MPLX to significant risk of volatility in 
natural gas or NGL prices due to the potential difference in price at the time of the purchases and then the subsequent sales. 
The significant volatility in natural gas, NGL and crude oil prices could adversely impact MPLX’s unit price, thereby increasing its 
distribution yield and cost of capital. Such impacts could adversely impact MPLX’s ability to execute its long-term organic growth 
projects, satisfy obligations to its customers and make distributions to unitholders at intended levels, and may also result in non-
cash impairments of long-lived assets or goodwill or other-than-temporary non-cash impairments of our equity method 
investments.
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Severe weather events, other climate conditions and earth movement and other geological hazards may adversely 
affect our assets and ongoing operations.
Our assets are subject to acute physical risks, such as floods, hurricane-force winds, wildfires, winter storms, and earth 
movement in variable, steep and rugged terrain and terrain with varied or changing subsurface conditions, and chronic physical 
risks, such as sea-level rise or water shortages. For example, in 2024, our Tampa Terminal and other logistics assets were 
adversely affected by hurricanes. The occurrence of these and similar events have had, and may in the future have, an adverse 
effect on our assets and operations. We have incurred and will continue to incur additional costs to protect our assets and 
operations from such physical risks and employ the evolving technologies and processes available to mitigate such risks. To the 
extent such severe weather events or other climate conditions increase in frequency and severity, we may be required to modify 
operations and incur costs that could materially and adversely affect our business, financial condition, results of operations and 
cash flows.
We are subject to risks arising from our operations outside the United States and generally to worldwide political and 
economic developments.
We operate and sell some of our products and procure some feedstocks outside the United States. Our business, financial 
condition, results of operations and cash flows could be negatively impacted by disruptions in any of these markets, including 
economic instability, restrictions on the transfer of funds, supply chain disruptions, duties and tariffs, transportation delays, 
difficulty in enforcing contractual provisions, import and export controls, changes in governmental policies, political and social 
unrest, security issues involving key personnel and changing regulatory and political environments. Future outbreaks of 
infectious diseases or pandemics could affect demand for refined products and economic conditions generally. In addition, the 
deterioration of trade relationships, modification or termination of existing trade agreements, imposition of economic sanctions 
against Russia or other countries and the effects of potential responsive countermeasures, or increased taxes, border 
adjustments or tariffs can make international business operations more costly, which can have a material adverse effect on our 
business, financial condition, results of operations and cash flows.
We are required to comply with U.S. and international laws and regulations, including those involving anti-bribery, anti-corruption 
and anti-money laundering. Our training and compliance program and our internal control policies and procedures may not 
always protect us from violations committed by our employees or agents. Actual or alleged violations of these laws could disrupt 
our business and cause us to incur significant legal expenses and could result in a material adverse effect on our reputation, 
business, financial condition, results of operations and cash flows.
More broadly, political and economic factors in global markets could impact crude oil and other feedstock supplies and could 
have a material adverse effect on us in other ways. Hostilities in the Middle East, Russia or elsewhere or the occurrence or threat 
of future terrorist attacks could adversely affect the economies of the U.S. and other countries. Lower levels of economic activity 
often result in a decline in energy consumption, which may cause our revenues and margins to decline and limit our future 
growth prospects. These risks could lead to increased volatility in prices for refined products, NGLs and natural gas. Additionally, 
these risks could increase instability in the financial and insurance markets and make it more difficult or costly for us to access 
capital and to obtain the insurance coverage that we consider adequate. Additionally, tax policy, legislative or regulatory action 
and commercial restrictions could reduce our operating profitability. For example, the U.S. government could prevent or restrict 
exports of refined products, NGLs, natural gas or the conduct of business in or with certain foreign countries. In addition, foreign 
countries could restrict imports, investments or commercial transactions or revoke or refuse to grant necessary permits. 
Our investments in joint ventures could be adversely affected by our reliance on our joint venture partners and their 
financial condition, and our joint venture partners may have interests or goals that are inconsistent with ours.
We conduct some of our operations through joint ventures in which we share control over certain economic and business 
interests with our joint venture partners. Our joint venture partners may have economic, business or legal interests or goals that 
are inconsistent with our goals and interests or may be unable to meet their obligations. Failure by us, or an entity in which we 
have an interest, to adequately manage the risks associated with any acquisitions or joint ventures could have a material 
adverse effect on the financial condition or results of operations of our joint ventures and adversely affect our reputation, 
business, financial condition, results of operations and cash flows.
Terrorist attacks or other targeted operational disruptions may affect our facilities or those of our customers and 
suppliers. 
Refining, gathering and processing, pipeline and terminal infrastructure, and other energy assets, may be the subject of terrorist 
attacks or other targeted operational disruptions. Any attack or targeted disruption of our operations, those of our customers or, in 
some cases, those of other energy industry participants, could have a material and adverse effect on our business. Similarly, any 
similar event that severely disrupts the markets we serve could materially and adversely affect our results of operations, financial 
position and cash flows.
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Financial Risks
We have significant debt obligations; therefore, our business, financial condition, results of operations and cash flows 
could be harmed by a deterioration of our credit profile or downgrade of our credit ratings, a decrease in debt capacity 
or unsecured commercial credit available to us, or by factors adversely affecting credit markets generally.
At December 31, 2024, our total debt obligations for borrowed money and finance lease obligations were $27.80 billion, including 
$21.21 billion of obligations of MPLX and its subsidiaries. We may incur substantial additional debt obligations in the future.
Our indebtedness may impose various restrictions and covenants on us that could have material adverse consequences, 
including:
•
increasing our vulnerability to changing economic, regulatory and industry conditions; 
•
limiting our ability to compete and our flexibility in planning for, or reacting to, changes in our business and the industry; 
•
limiting our ability to pay dividends to our stockholders; 
•
limiting our ability to borrow additional funds; and 
•
requiring us to dedicate a substantial portion of our cash flow from operations to payments on our debt, thereby 
reducing funds available for working capital, capital expenditures, acquisitions, share repurchases, dividends and other 
purposes. 
A decrease in our debt or commercial credit capacity, including unsecured credit extended by third-party suppliers, or a 
deterioration in our credit profile could increase our costs of borrowing money and limit our access to the capital markets and 
commercial credit. Our credit rating is determined by independent credit rating agencies. We cannot provide assurance that any 
of our credit ratings will remain in effect for any given period of time or that a rating will not be lowered or withdrawn entirely by a 
rating agency if, in its judgment, circumstances so warrant. Any changes in our credit capacity or credit profile could materially 
and adversely affect our business, financial condition, results of operations and cash flows.
Significant variations in the market prices of crude oil and refined products can affect our financial performance.
Significant variations in the market prices of products held in our inventories could have a negative or positive effect on our 
financial performance. In addition, a sustained period of low crude oil prices may also result in significant financial constraints on 
certain producers from which we acquire our crude oil, which could result in long term crude oil supply constraints for our 
business. Such conditions could also result in an increased risk that our customers and other counterparties may be unable to 
fully fulfill their obligations in a timely manner, or at all. 
A continued period of economic slowdown or recession, or a protracted period of depressed prices for crude oil or refined 
petroleum products, could have significant and adverse consequences for our financial condition and the financial condition of 
our customers, suppliers and other counterparties, and could diminish our liquidity, trigger additional impairments and negatively 
affect our ability to obtain adequate crude oil volumes and to market certain of our products at favorable prices, or at all.
Our working capital, cash flows and liquidity can be significantly affected by decreases in commodity prices.
Payment terms for our crude oil purchases are generally longer than the terms we extend to our customers for refined product 
sales. As a result, the payables for our crude oil purchases are proportionally larger than the receivables for our refined product 
sales. Due to this net payables position, a decrease in commodity prices generally results in a use of working capital, and given 
the significant volume of crude oil that we purchase the impact can materially affect our working capital, cash flows and liquidity. 
Increases in interest rates could adversely impact our share price, our ability to issue equity or incur debt for 
acquisitions or other purposes and our ability to make dividends at our intended levels.
Our revolving credit facility has a variable interest rate. As a result, future interest rates on our debt could be higher than current 
levels, causing our financing costs to increase accordingly. In addition, we may in the future refinance outstanding borrowings 
under our revolving credit facility with fixed-rate indebtedness. Interest rates payable on fixed-rate indebtedness typically are 
higher than the short-term variable interest rates that we pay on borrowings under our revolving credit facility. We also have other 
fixed-rate indebtedness that we may need or desire to refinance in the future at or prior to the applicable stated maturity. A rising 
interest rate environment could have an adverse impact on our share price and our ability to issue equity or incur debt for 
acquisitions or other purposes and to make dividends at our intended levels.
We may incur losses and additional costs as a result of our forward-contract activities and derivative transactions. 
We currently use commodity derivative instruments, and we expect to continue their use in the future. If the instruments we use 
to hedge our exposure to various types of risk are not effective, we may incur losses. Derivative transactions involve the risk that 
counterparties may be unable to satisfy their obligations to us. The risk of counterparty default is heightened in a poor economic 
environment. In addition, we may be required to incur additional costs in connection with future regulation of derivative 
instruments to the extent it is applicable to us.
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We do not insure against all potential losses, and, therefore, our business, financial condition, results of operations and 
cash flows could be adversely affected by unexpected liabilities and increased costs.
We maintain insurance coverage in amounts we believe to be prudent against many, but not all, potential liabilities arising from 
operating hazards. Uninsured liabilities arising from operating hazards such as explosions, fires, refinery or pipeline releases, 
cybersecurity breaches or other incidents involving our assets or operations can reduce the funds available to us for capital and 
investment spending and could have a material adverse effect on our business, financial condition, results of operations and 
cash flows. Historically, we also have maintained insurance coverage for physical damage and resulting business interruption to 
our major facilities, with significant self-insured retentions. In the future, we may not be able to maintain insurance of the types 
and amounts we desire at reasonable rates.
We have recorded goodwill and other intangible assets that could become further impaired and result in material non-
cash charges to our results of operations. 
We accounted for certain acquisitions using the acquisition method of accounting, which requires that the assets and liabilities of 
the acquired business be recorded to our balance sheet at their respective fair values as of the acquisition date. Any excess of 
the purchase consideration over the fair value of the acquired net assets is recognized as goodwill.
As of December 31, 2024, our balance sheet reflected $8.2 billion and $1.8 billion of goodwill and other intangible assets, 
respectively. We have in the past recorded significant impairments of our goodwill. To the extent the value of goodwill or 
intangible assets becomes further impaired, we may be required to incur additional material non-cash charges relating to such 
impairment. Our operating results may be significantly impacted from both the impairment and the underlying trends in the 
business that triggered the impairment.
Large capital projects can be subject to delays, take years to complete, and market conditions could deteriorate 
significantly between the project approval date and the project startup date, negatively impacting project returns. 
We have several large capital projects underway, including efficiency and modernization improvements at our Los Angeles 
Refinery and a Distillate Hydrotreater project at our Galveston Bay Refinery. Delays in completing capital projects or making 
required changes or upgrades to our facilities could subject us to fines or penalties as well as affect our ability to supply certain 
products we produce. Such delays or cost increases may arise as a result of unpredictable factors, many of which are beyond 
our control, including:
•
denials of, delays in receiving, or revocations of requisite regulatory approvals or permits;
•
unplanned increases in the cost of construction materials or labor, whether due to inflation or other factors;
•
disruptions in transportation of components or construction materials;
•
adverse weather conditions, natural disasters or other events (such as equipment malfunctions, explosions, fires or 
spills) affecting our facilities, or those of vendors or suppliers;
•
shortages of sufficiently skilled labor, or labor disagreements resulting in unplanned work stoppages;
•
market-related increases in a project’s debt or equity financing costs; 
•
global supply chain disruptions;
•
nonperformance by, or disputes with, vendors, suppliers, contractors or subcontractors; and
•
delays due to citizen, state or local political or activist pressure.
Moreover, our revenues may not increase immediately upon the expenditure of funds on a particular project. For instance, if we 
build a new pipeline, the construction will occur over an extended period of time and we may not receive any material increases 
in revenues until after completion of the project, if at all. 
Any one or more of these factors could have a significant impact on our ongoing capital projects. If we were unable to make up 
the delays associated with such factors or to recover the related costs, or if market conditions change, it could materially and 
adversely affect our capital project returns and our business, financial condition, results of operations and cash flows.
Legal and Regulatory Risks
We expect to continue to incur substantial capital expenditures and operating costs to meet the requirements of 
evolving environmental and other laws or regulations. Additionally, changes to the federal government’s policies and 
operations could lead to increased regulatory uncertainty and volatility, which may impact our business, financial 
condition and results of operations.
Our business is subject to numerous environmental laws and regulations. These laws and regulations continue to increase in 
both number and complexity and affect our business. Laws and regulations expected to become more stringent relate to the 
following:
•
the emission or discharge of materials into the environment;
•
solid and hazardous waste management;
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•
the regulatory classification of materials currently or formerly used in our business;
•
pollution prevention;
•
climate change and GHG emissions;
•
characteristics and composition of transportation fuels, including the quantity of renewable fuels that must be blended 
into transportation fuels;
•
the production, importation, use, and disposal of specific chemicals;
•
public and employee safety and health;
•
permitting;
•
inherently safer technology; and
•
facility security.
The specific impact of laws and regulations on us and our competitors may vary depending on a number of factors, including the 
age and location of operating facilities, marketing areas, crude oil and feedstock sources, production processes and subsequent 
judicial interpretation of such laws and regulations. We have incurred and will continue to incur substantial capital, operating and 
maintenance, and remediation expenditures to modify operations, install pollution control equipment, perform site cleanups or 
curtail operations. We have incurred and may in the future incur liability for personal injury, property damage, natural resource 
damage or clean-up costs due to alleged contamination and/or exposure to chemicals such as benzene and methyl tert-butyl 
ether (“MTBE”). There is also increased regulatory interest in PFAS, which we expect will lead to increased monitoring and 
remediation obligations and potential liability related thereto. Such expenditures could materially and adversely affect our 
business, financial condition, results of operations and cash flows.
In early 2025, the new U.S. presidential administration announced wide-ranging policy changes and issued numerous executive 
actions on topics including international trade, energy resources, corporate taxes, global climate change initiatives, employment 
practices, corporate compliance programs, environmental regulations, as well as other matters. Further, the new presidential 
administration has indicated an intent to make structural changes to the executive branch of the federal government, including 
significant reductions in the federal workforce. Continuing legal challenges to many of the policy changes and executive actions 
are expected. Such actions may directly or indirectly impact our industry and could lead to increased regulatory uncertainty and 
volatility. We cannot predict how these policy changes and executive actions will be implemented and interpreted, or the ultimate 
effect they will have on our business, financial condition and results of operations.
The tax treatment of publicly traded partnerships or an investment in MPLX units could be subject to potential 
legislative, judicial or administrative changes and differing interpretations, possibly on a retroactive basis.
The present U.S. federal income tax treatment of publicly traded partnerships, including MPLX, or an investment in MPLX 
common units may be modified by administrative, legislative or judicial interpretation at any time. From time to time, the 
President and members of the U.S. Congress propose and consider substantive changes to the existing U.S. federal income tax 
laws that would affect publicly traded partnerships, including proposals that would eliminate MPLX’s ability to qualify for 
partnership tax treatment. 
We are unable to predict whether any such changes will ultimately be enacted. Any modification to the U.S. federal income tax 
laws and interpretations thereof may or may not be applied retroactively and could make it more difficult or impossible for MPLX 
to meet the exception for certain publicly traded partnerships to be treated as partnerships for U.S. federal income tax purposes 
or increase the amount of taxes payable by unitholders in publicly traded partnerships.
Climate change and GHG emission regulation could affect our operations, energy consumption patterns and regulatory 
obligations, any of which could adversely impact our results of operations and financial condition.
Currently, multiple legislative and regulatory measures to address GHG (including carbon dioxide, methane and nitrous oxides) 
and other emissions are in various phases of consideration, promulgation or implementation. These include actions to develop 
international, federal, regional or statewide programs, which could require reductions in our GHG or other emissions, establish a 
carbon tax and decrease the demand for refined products. Requiring reductions in these emissions could result in increased 
costs to (i) operate and maintain our facilities, (ii) install new emission controls at our facilities and (iii) administer and manage 
any emissions programs, including acquiring emission credits or allotments.
For example, California and Washington have enacted cap-and-trade programs and low carbon fuel standards. Other states are 
proposing, or have already promulgated, low carbon fuel standards or similar initiatives to reduce emissions from the 
transportation sector. If we are unable to pass the costs of compliance on to our customers, sufficient credits are unavailable for 
purchase, we have to pay a significantly higher price for credits, or if we are otherwise unable to meet our compliance obligation, 
our financial condition and results of operations could be adversely affected.
Certain municipalities have also proposed or enacted restrictions on the installation of natural gas appliances and infrastructure 
in new residential or commercial construction, which could affect demand for the natural gas that MPLX transports and stores.
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. The legality of 
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these bills is being challenged in court. Our potential share is dependent on multiple factors, including the number of responsible 
parties and GHG emission calculation methodologies, and cannot be estimated at this time. 
Regional and state climate change and air emissions goals and regulatory programs are complex, subject to change and 
considerable uncertainty due to a number of factors including technological feasibility, legal challenges and potential changes in 
federal policy. Increasing concerns about climate change and carbon intensity have also resulted in societal concerns and a 
number of international and national measures to limit GHG emissions. Additional stricter measures and investor pressure can 
be expected in the future and any of these changes may have a material adverse impact on our business or financial condition.
The scope and magnitude of the changes to U.S. climate change strategy under the current and future administrations, however, 
remain subject to the passage of legislation and interpretation and action of federal and state regulatory bodies; therefore, the 
impact to our industry and operations due to GHG regulation is unknown at this time.
Energy companies are subject to increasing environmental and climate-related litigation.
Governmental and other entities in various U.S. states have filed lawsuits against various energy companies, including us, 
alleging damages as a result of climate change, false statements about climate change, and violations of various consumer 
protection statutes. The plaintiffs are seeking unspecified damages and abatement under various tort theories. Governments and 
private parties may continue to file lawsuits or initiate regulatory action based on allegations that certain public statements 
regarding climate change and other ESG related matters and practices by companies are false and misleading “greenwashing” 
that violate deceptive trade practices and consumer protection statutes, presenting a high degree of uncertainty regarding the 
extent to which energy companies face an increased risk of liability stemming from climate change or ESG disclosures and 
practices. 
Attorneys general and other government officials may continue to pursue litigation in which they seek to recover civil damages 
against us on behalf of a state or its citizens for a variety of claims, including violation of consumer protection and product pricing 
laws or natural resources damages. Additionally, private plaintiffs and government parties have undertaken efforts to shut down 
energy assets by challenging operating permits, the validity of easements or the compliance with easement conditions. For 
example, the Dakota Access Pipeline, in which MPLX has a minority interest, has been subject to, and may in the future be 
subject to, litigation seeking a permanent shutdown of the pipeline. There remains a high degree of uncertainty regarding the 
ultimate outcome of these types of proceedings, as well as their potential effect on our business, financial condition, results of 
operation and cash flows.
We are subject to risks associated with societal and political pressures and other forms of opposition to the 
development, transportation and use of carbon-based fuels. Such risks could adversely impact our business and our 
ability to continue to operate or realize certain growth strategies.
We operate and develop our business with the expectation that regulations and societal sentiment will continue to enable the 
development, transportation and use of carbon-based fuels. However, policy decisions relating to the production, refining, 
transportation, storage and marketing of carbon-based fuels are subject to political pressures and the influence of public 
sentiment on GHG emissions, climate change, and climate adaptation. Additionally, societal sentiment regarding carbon-based 
fuels may adversely impact our reputation and ability to attract and retain employees.
The approval process for storage and transportation projects has become increasingly challenging, due in part to state and local 
concerns related to pipelines, negative public perception regarding the oil and gas industry, and concerns regarding GHG 
emissions downstream of pipeline operations. Our expansion or construction projects may not be completed on schedule (or at 
all), or at the budgeted cost. We also may be required to incur additional costs and expenses in connection with the design and 
installation of our facilities due to their location and the surrounding terrain. We may be required to install additional facilities, 
incur additional capital and operating expenditures, or experience interruptions in or impairments of our operations to the extent 
that the facilities are not designed or installed correctly. 
Increasing attention to environmental, social and governance matters may impact our business and financial results.
In recent years, increasing attention has been given to corporate activities related to ESG matters in public discourse and the 
investment community, including climate change, energy transition matters, and inclusion. A number of advocacy groups, both 
domestically and internationally, have campaigned for governmental and private action to promote ESG-related change at public 
companies, including, but not limited to, through the investment and voting practices of investment advisers, pension funds, 
universities and other members of the investing community. These activities include increasing attention and demands for action 
related to climate change and energy transition matters, such as promoting the use of substitutes to fossil fuel products and 
encouraging the divestment of fossil fuel equities, as well as pressuring lenders and other financial services companies to limit or 
curtail activities with fossil fuel companies. If this were to continue, it could have a material adverse effect on our access to 
capital. Members of the investment community have begun to screen companies such as ours for sustainability performance, 
including practices related to GHG emission reduction and energy transition strategies. If we are unable to find economically 
viable, as well as publicly acceptable, solutions that reduce our GHG emissions, reduce GHG intensity for new and existing 
projects, increase our non-fossil fuel product portfolio, and/or address other ESG-related stakeholder concerns, our business and 
results of operations could be materially and adversely affected. Further, our reputation could be damaged as a result of our 
support of, association with or lack of support or disapproval of certain social causes, as well as any decisions we make to 
continue to conduct, or change, certain of our activities in response to such considerations.
26

Our goals, targets and disclosures related to ESG matters expose us to numerous risks, including risks to our 
reputation and stock price. 
Companies across all industries are facing increasing scrutiny from stakeholders related to ESG matters, including practices and 
disclosures regarding climate-related initiatives. In 2022, MPC established a target to reduce GHG emissions and MPLX 
established a target to reduce methane emissions intensity. These targets reflect our current plans and aspirations and are not 
guarantees that we will be able to achieve them. We assess progress with these targets on an annual basis. We may modify, 
discontinue, update or expand targets or adopt new metrics as new information, opportunities, and technologies become 
available. Further, there are conflicting expectations and priorities from regulatory authorities, investors, voluntary reporting frame 
works, and other stakeholders surrounding accounting and disclosure of ESG matters and climate related initiatives. Our efforts 
to accomplish and accurately report on these goals and objectives, which may be, in part, dependent on the actions of suppliers 
and other third parties, present numerous operational, regulatory, reputational, financial, legal, and other risks, any of which 
could have a material negative impact, including on our reputation and stock price.
Efforts to achieve goals and targets, such as the foregoing and future internal climate-related initiatives, may increase costs, 
require purchase of carbon credits, or limit or impact our business plans and financial results, potentially resulting in the reduction 
to the economic end-of-life of certain assets and an impairment of the associated net book value, among other material adverse 
impacts. Additionally, as the nature, scope and complexity of ESG reporting, calculation methodologies, voluntary reporting 
standards and disclosure requirements expand, including the SEC’s currently stayed disclosure requirements regarding, among 
other matters, GHG emissions, we may have to undertake additional costs to control, assess and report on ESG metrics. Our 
failure or perceived failure to pursue or fulfill such goals and targets or to satisfy various reporting standards within the timelines 
we announce, or at all, could have a negative impact on investor sentiment, ratings outcomes for evaluating our approach to 
ESG matters, stock price, and cost of capital and expose us to government enforcement actions and private litigation, among 
other material adverse impacts.
Regulatory and other requirements concerning the transportation of crude oil and other commodities by rail may cause 
increases in transportation costs or limit the amount of crude oil that we can transport by rail.
We rely on a variety of systems to transport crude oil, including rail. Rail transportation is regulated by federal, state and local 
authorities. New regulations or changes in existing regulations could result in increased compliance expenditures. For example, 
in 2015, the DOT issued new standards and regulations applicable to crude-by-rail transportation (Enhanced Tank Car Standards 
and Operational Controls for High-Hazard Flammable Trains). These or other regulations that require the reduction of volatile or 
flammable constituents in crude oil that is transported by rail, change the design or standards for rail cars used to transport the 
crude oil we purchase, change the routing or scheduling of trains carrying crude oil, or require any other changes that 
detrimentally affect the economics of delivering North American crude oil by rail could increase the time required to move crude 
oil from production areas to our refineries, increase the cost of rail transportation and decrease the efficiency of shipments of 
crude oil by rail within our operations. Any of these outcomes could have a material adverse effect on our business and results of 
operations.
If California or other jurisdictions (i) establish a maximum refining margin and impose a financial penalty for profits 
above such maximum refining margin, (ii) impose restrictions on turnaround and maintenance activities or (iii) require 
that petroleum refiners maintain a minimum inventory of transportation fuels, our financial results and profitability 
could be adversely affected.
In June 2023, the provisions of California’s Senate Bill No. 2 (such statute, together with any regulations contemplated or issued 
thereunder, “SB X1-2”) became effective, which, among other things, (i) authorized the establishment of a maximum gross 
gasoline refining margin and the imposition of a financial penalty for profits above a maximum gross gasoline refining margin, 
(ii) significantly expanded the reporting obligations (e.g., daily, weekly, monthly, and annually reporting of detailed operational and 
financial data on all aspects of our operations in California) to the California Energy Commission (“CEC”) for all participants in the 
petroleum industry supply chain in California, (iii) created the Division of Petroleum Market Oversight within the CEC to monitor 
and analyze the transportation fuels market, including the data provided under SB X1-2, and (iv) authorized the CEC to regulate 
the timing and other aspects of refinery turnaround and maintenance activities in certain instances. The operational data 
reporting includes our plans for turnaround and maintenance activities at our Los Angeles refinery and Martinez renewable diesel 
facility and our plans to address potential impacts on feedstock and product inventories in California resulting from such 
turnaround and maintenance activities. 
In late 2023, the CEC adopted (i) an order requiring an informational proceeding on a maximum gross gasoline refining margin 
and penalty under SB X1-2, and (ii) an order initiating rulemaking activity under SB X1-2 that will be focused on refinery 
maintenance and turnarounds.
In October 2024, California’s governor signed Assembly Bill No.1 (such statute, together with any regulations contemplated or 
issued thereunder, “AB X2-1”), into law, authorizing the CEC to require that petroleum refiners maintain a minimum inventory of 
transportation fuels including the requirement that petroleum refiners plan for resupply during scheduled maintenance.
To the extent that the CEC establishes a maximum gross gasoline refining margin and imposes a financial penalty for profits 
above such maximum gross gasoline refining margin or requires that petroleum refiners maintain a minimum inventory of 
transportation fuels, our financial results and profitability could be adversely affected. Our results of operations, financial 
27

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. We cannot reasonably predict the impact that full implementation of SB 
X1-2 or AB X2-1 will have on our California operations or our company nor can we predict the impact from similarly focused 
legislation or actions in other jurisdictions in which we operate our refineries. The recently adopted legislation in California, and 
the future enactment of similar legislation in any of the other jurisdictions, could adversely impact our business, financial 
condition, results of operations and cash flows.
Increased regulation of hydraulic fracturing and other oil and gas production activities could result in reductions or 
delays in U.S. production of crude oil and natural gas, which could adversely affect our results of operations and 
financial condition.
While we do not conduct hydraulic fracturing operations, we do provide gathering, processing and fractionation services with 
respect to natural gas and natural gas liquids produced by our customers as a result of such operations. Our refineries are also 
supplied in part with crude oil produced from unconventional oil shale reservoirs. A range of federal, state and local laws and 
regulations currently govern or, in some cases, prohibit hydraulic fracturing in some jurisdictions. Stricter laws, regulations and 
permitting processes may be enacted in the future. If federal, state and local legislation and regulatory initiatives relating to 
hydraulic fracturing or other oil and gas production activities are enacted or expanded, such efforts could impede oil and gas 
production, increase producers’ cost of compliance, and result in reduced volumes available for our midstream assets to gather, 
process and fractionate.
Historic or current operations could subject us to significant legal liability or restrict our ability to operate.
We currently are defending litigation and anticipate we will be required to defend new litigation in the future. Our operations, 
including those of MPLX, and those of our predecessors could expose us to litigation and civil claims by private plaintiffs for 
alleged damages related to contamination of the environment or personal injuries caused by releases of hazardous substances 
from our facilities, products liability, consumer credit or privacy laws, product pricing or antitrust laws or any other laws or 
regulations that apply to our operations. While an adverse outcome in most litigation matters would not be expected to be 
material to us, in class-action litigation, large classes of plaintiffs may allege damages relating to extended periods of time or 
other alleged facts and circumstances that could increase the amount of potential damages. Attorneys general and other 
government officials have in the past and may in the future pursue litigation in which they seek to recover civil damages from 
companies on behalf of a state or its citizens for a variety of claims, including violation of consumer protection and product 
pricing laws or natural resources damages. If we are not able to successfully defend such litigation, it may result in liability to our 
company that could materially and adversely affect our business, financial condition, results of operations and cash flows. In 
addition to substantial liability, plaintiffs in litigation may also seek injunctive relief which, if imposed, could have a material 
adverse effect on our future business, financial condition, results of operations and cash flows.
A portion of our workforce is unionized, and we may face labor disruptions that could materially and adversely affect 
our business, financial condition, results of operations and cash flows.
Approximately 3,800 of our employees are covered by collective bargaining agreements with expiration dates ranging from 2026 
to 2031. These agreements may be renewed at an increased cost to us. In addition, we have experienced in the past, and may 
experience in the future, work stoppages as a result of labor disagreements. Any prolonged work stoppages disrupting 
operations could have a material adverse effect on our business, financial condition, results of operations and cash flows. 
In addition, some states in which we operate require refinery owners to pay prevailing wages to contract craft workers and 
restrict refiners’ ability to hire qualified employees to a limited pool of applicants. Legislation or changes in regulations could 
result in labor shortages, higher labor costs, and an increased risk that contract workers become joint employees, which could 
trigger bargaining issues, and wage and benefit consequences, especially during critical maintenance and construction periods.
One of our subsidiaries acts as the general partner of a master limited partnership, which may expose us to certain 
legal liabilities.
One of our subsidiaries acts as the general partner of MPLX, a master limited partnership. Our control of the general partner of 
MPLX may increase the possibility of claims of breach of fiduciary duties, including claims of conflicts of interest. Any liability 
resulting from such claims could have a material adverse effect on our future business, financial condition, results of operations 
and cash flows.
If foreign investment in us or MPLX exceeds certain levels, we could be prohibited from operating vessels engaged in 
U.S. coastwise trade, which could adversely affect our business, financial condition, results of operations and cash 
flows.
The Shipping Act of 1916 and Merchant Marine Act of 1920 (together, the “Maritime Laws”), generally require that vessels 
engaged in U.S. coastwise trade be owned by U.S. citizens. Among other requirements to establish citizenship, entities that own 
such vessels must be owned at least 75 percent by U.S. citizens. 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. Such a prohibition 
could materially and adversely affect our business, financial condition, results of operations and cash flows.
28

Our operations could be disrupted if we are unable to maintain or obtain real property rights required for our business.
We do not own all of the land on which certain of our assets are located, particularly our midstream assets, but rather obtain the 
rights to construct and operate such assets on land owned by third parties and governmental agencies for a specific period of 
time. Therefore, we are subject to the possibility of more burdensome terms and increased costs to retain necessary land use if 
our leases, rights-of-way or other property rights lapse, terminate or are reduced or it is determined that we do not have valid 
leases, rights-of-way or other property rights. For example, a portion of the Tesoro High Plains pipeline in North Dakota remains 
shut down following delays in renewing a right-of-way necessary for the operation of a section of the pipeline. Any loss of or 
reduction in our real property rights, including loss or reduction due to legal, governmental or other actions or difficulty renewing 
leases, right-of-way agreements or permits on satisfactory terms or at all, could have a material adverse effect on our business, 
financial condition, results of operations and cash flows.
Certain of our facilities are located on Native American tribal lands and are subject to various federal and tribal 
approvals and regulations, which can increase our costs and delay or prevent our efforts to conduct operations.
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. In addition, each Native American 
tribe is a sovereign nation having the right to enforce laws and regulations and to grant approvals independent from federal, state 
and local statutes and regulations. These tribal laws and regulations include various taxes, fees, requirements to employ Native 
American tribal members and other conditions that apply to operators and contractors conducting operations on Native American 
tribal lands. Persons conducting operations on tribal lands are generally subject to the Native American tribal court system. In 
addition, if our relationships with any of the relevant Native American tribes were to deteriorate, we could face significant risks to 
our ability to continue operations on Native American tribal lands. One or more of these factors has in the past and may in the 
future increase our cost of doing business on Native American tribal lands and impact the viability of, or prevent or delay our 
ability to conduct operations on such lands. For example, we are subject to ongoing litigation regarding trespass claims relating 
to a portion of the Tesoro High Plains pipeline in North Dakota.
The Court of Chancery of the State of Delaware will be, to the extent permitted by law, the sole and exclusive forum for 
most disputes between us and our shareholders. 
Our Restated Certificate of Incorporation provides that, unless we consent in writing to the selection of an alternative forum, the 
Court of Chancery of the State of Delaware (or, if the Court of Chancery does not have subject matter jurisdiction, the federal 
district court for the District of Delaware) will be the sole and exclusive forum for:
•
any derivative action or proceeding brought on behalf of MPC;
•
any action asserting a claim of breach of a fiduciary duty owed by any director or officer of MPC to MPC or its 
stockholders;
•
any action asserting a claim against MPC arising pursuant to any provision of the General Corporation Law of the State 
of Delaware, MPC’s Restated Certificate of Incorporation, any Preferred Stock Designation or the Bylaws of MPC; or
•
any other action asserting a claim against MPC or any Director or officer of MPC that is governed by or subject to the 
internal affairs doctrine for choice of law purposes.
The exclusive forum provision does not apply to suits brought to enforce any liability or duty created by the Exchange Act or any 
other claim for which the federal courts have exclusive jurisdiction. Our Restated Certificate of Incorporation also provides that, 
unless we consent in writing to the selection of an alternative forum, the U.S. federal district courts shall be, to the fullest extent 
permitted by law, the exclusive forum for any action asserting a claim under the Securities Act.
The forum selection provision may restrict a stockholder’s ability to bring a claim against us or directors or officers of MPC in a 
forum that it finds favorable, which may discourage stockholders from bringing such claims at all. Alternatively, if a court were to 
find the forum selection provision contained in our Restated Certificate of Incorporation to be inapplicable or unenforceable in an 
action, we may incur additional costs associated with resolving such action in another forum, which could materially adversely 
affect our business, financial condition and results of operations. 
Provisions in our corporate governance documents could operate to delay or prevent a change in control of our 
company, dilute the voting power or reduce the value of our capital stock or affect its liquidity.
The existence of some provisions within our restated certificate of incorporation and amended and restated bylaws could 
discourage, delay or prevent a change in control of us that a stockholder may consider favorable. These include provisions:
•
providing that our board of directors fixes the number of members of the board; 
•
providing for the division of our board of directors into three classes with staggered terms; 
•
providing that only our board of directors may fill board vacancies; 
•
limiting who may call special meetings of stockholders; 
•
prohibiting stockholder action by written consent, thereby requiring stockholder action to be taken at a meeting of the 
stockholders; 
29

•
establishing advance notice requirements for nominations of candidates for election to our board of directors or for 
proposing matters that can be acted on by stockholders at stockholder meetings; 
•
establishing supermajority vote requirements for certain amendments to our restated certificate of incorporation; 
•
providing that our directors may only be removed for cause; 
•
authorizing a large number of shares of common stock that are not yet issued, which would allow our board of directors 
to issue shares to persons friendly to current management, thereby protecting the continuity of our management, or 
which could be used to dilute the stock ownership of persons seeking to obtain control of us; and 
•
authorizing the issuance of “blank check” preferred stock, which could be issued by our board of directors to increase 
the number of outstanding shares and thwart a takeover attempt. 
Our restated certificate of incorporation also authorizes us to issue, without the approval of our stockholders, one or more 
classes or series of preferred stock having such designation, powers, preferences and relative, participating, optional and other 
special rights, including preferences over our common stock respecting dividends and distributions, as our board of directors 
generally may determine. The terms of one or more classes or series of preferred stock could dilute the voting power or reduce 
the value of our common stock. For example, we could grant holders of preferred stock the right to elect some number of our 
board of directors in all events or on the happening of specified events or the right to veto specified transactions. Similarly, the 
repurchase or redemption rights or liquidation preferences we could assign to holders of preferred stock could affect the residual 
value of our common stock.
Finally, to facilitate compliance with the Maritime Laws, our restated certificate of incorporation limits the aggregate percentage 
ownership by non-U.S. citizens of our common stock or any other class of our capital stock to 23 percent of the outstanding 
shares. We may prohibit transfers that would cause ownership of our common stock or any other class of our capital stock by 
non-U.S. citizens to exceed 23 percent. Our restated certificate of incorporation also authorizes us to effect any and all measures 
necessary or desirable to monitor and limit foreign ownership of our common stock or any other class of our capital stock. These 
limitations could have an adverse impact on the liquidity of the market for our common stock if holders are unable to transfer 
shares to non-U.S. citizens due to the limitations on ownership by non-U.S. citizens. Any such limitation on the liquidity of the 
market for our common stock could adversely impact the market price of our common stock.
General Risk Factors
Significant stockholders may attempt to effect changes at our company or acquire control over our company, which 
could impact the pursuit of business strategies and adversely affect our results of operations and financial condition.
Our stockholders may from time to time engage in proxy solicitations, advance stockholder proposals or otherwise attempt to 
effect changes or acquire control over our company. Campaigns by stockholders to effect changes at publicly traded companies 
are sometimes led by investors seeking to increase short-term stockholder value through actions such as financial restructuring, 
increased debt, special dividends, stock repurchases or sales of assets or the entire company. Responding to proxy contests and 
other actions by activist stockholders can be costly and time-consuming and could divert the attention of our board of directors 
and senior management from the management of our operations and the pursuit of our business strategies. As a result, 
stockholder campaigns could adversely affect our results of operations and financial condition.
Future acquisitions will involve the integration of new assets or businesses and may present substantial risks that 
could adversely affect our business, financial conditions, results of operations and cash flows.
Future transactions involving the addition of new assets or businesses will present risks, which may include, among others:
•
inaccurate assumptions about future synergies, revenues, capital expenditures and operating costs;
•
an inability to successfully integrate, or a delay in the successful integration of, assets or businesses we acquire;
•
a decrease in our liquidity resulting from using a portion of our available cash or borrowing capacity under our revolving 
credit agreement to finance transactions;
•
a significant increase in our interest expense or financial leverage if we incur additional debt to finance transactions;
•
the assumption of unknown environmental and other liabilities, losses or costs for which we are not indemnified or for 
which our indemnity is inadequate;
•
the diversion of management’s attention from other business concerns; 
•
the loss of customers or key employees from the acquired business; and
•
the incurrence of other significant charges, such as impairment of goodwill or other intangible assets, asset devaluation 
or restructuring charges.
Compliance with and changes in tax laws could materially and adversely impact our financial condition, results of 
operations and cash flows. 
We are subject to extensive tax liabilities, including federal, state and local income taxes in the United States and in foreign 
jurisdictions, and, transactional, payroll, franchise, withholding and property taxes. New tax laws and regulations and changes in, 
interpretations of, and guidance regarding tax laws and regulations, including impacts of the Tax Cuts and Jobs Act of 2017, the 
30

Coronavirus Aid, Relief, Economic Security Act of 2020, and the Inflation Reduction Act of 2022, could result in increased 
expenditures by us for tax liabilities in the future and could materially and adversely impact our financial condition, results of 
operations and cash flows.
In addition, we are subject to the examination of our returns by taxing authorities. We regularly assess the likelihood of adverse 
outcomes resulting from such examinations to determine the adequacy of our provision for income taxes. Although we believe 
we have made appropriate provisions for taxes in the jurisdictions in which we operate, changes in the tax laws or challenges 
from tax authorities under existing tax laws could adversely affect our business, financial condition and results of operations and 
could subject us to interest and penalties.
Item 1B. Unresolved Staff Comments
None
Item 1C. Cybersecurity
Risk Management and Strategy
We have processes in place designed to protect our information systems, data, assets, infrastructure and computing 
environments from cybersecurity threats and risks while maintaining confidentiality, integrity, and availability. These enterprise-
wide processes are based upon policies, practices and standards that guide us on identifying, assessing, and managing material 
cybersecurity risks and include, but are not limited to: 
•
placing security limits on physical and network access to our information technology (“IT”) and operating technology 
(“OT”) systems; 
•
employing internal IT and OT controls designed to detect cybersecurity threats by collecting and analyzing data in our 
centralized cybersecurity operations center; 
•
utilizing layers of defensive methodologies designed to facilitate cyber resilience, minimize attack surfaces, and provide 
flexibility and scalability in our ability to address cybersecurity risks and threats; 
•
providing cybersecurity threat and awareness training to employees and contractors; 
•
limiting remote network access to our IT and OT network environments; and
•
assessing our cybersecurity resiliency through various methods, including penetration testing, tabletop exercises with 
varying scenarios and participants ranging from individuals on our operations teams to executive leadership, and 
analyzing our corporate cybersecurity incident response plan.
We apply an enterprise risk management (“ERM”) methodology as established and led by our executive leadership team and 
overseen by our Board to identify, assess, and manage enterprise-level risks. Our cybersecurity risk program directly integrates 
and is intended to align with our governing ERM program. 
We engage with external resources to contribute to and provide independent evaluation of our cybersecurity practices, including 
a periodic assessment of our cybersecurity program that is performed by a third party. Our cybersecurity leadership and 
operational teams monitor cybersecurity threat intelligence and applicable cybersecurity regulatory requirements in a variety of 
ways, including by communicating with federal agencies, trade associations, service providers, and other miscellaneous third-
party resources. Our management team, through consultation with our Senior Vice President and Chief Digital Officer (“CDO”), 
Vice President and Chief Information Security Officer (“CISO”), and the Audit Committee of our Board, use the information 
gathered from these sources to inform long-term cybersecurity investments and strategies which seek to identify cybersecurity 
threats and protect against, detect, respond to and recover from cybersecurity incidents. 
The information systems, data, assets, infrastructure, and computing environments of our third-party service providers are also at 
risk of cybersecurity incidents. We manage third-party service provider cybersecurity risks through contract management, 
evaluation of applicable security control assessments, and third-party risk assessment processes. 
As of February 27, 2025, we do not believe that any risks from cybersecurity threats, including as a result of past cybersecurity 
incidents, have had, or are reasonably likely to have, a material adverse effect on the company, including our business strategy, 
results of operations or financial condition. However, there can be no assurance that our cybersecurity processes will prevent or 
mitigate cybersecurity incidents or threats and that efforts will always be successful. It is possible that cybersecurity incidents 
may occur and could have a material adverse effect on our business strategy, results of operations, or financial condition. See 
“Business and Operational Risks--We are increasingly dependent on the performance of our information technology systems and 
those of our third-party business partners and service providers” in Item 1A. Risk Factors of this Annual Report on Form 10-K.
31

Governance 
Our full Board of Directors oversees enterprise-level risks and has delegated to the Audit Committee of our Board oversight of 
risks from cybersecurity threats as informed through the ERM program. Our CDO and CISO are standing members of the ERM 
committee, comprised of members of senior management, and as part of the committee, report on and evaluate cybersecurity 
threats and risk management efforts, as communicated to them by way of their direct reports and the larger cybersecurity team. 
The CDO and CISO are responsible for managing risks from cybersecurity threats. The CDO and CISO provide regular 
cybersecurity briefings to the Board of Directors including the Audit Committee, with a minimum of two briefings per year and 
additional briefings as needed. The Audit Committee also has direct access to the CDO and CISO and their management teams 
for other updates on cybersecurity and information security strategy throughout the year. Additionally, the CDO and CISO, from 
time to time, meet with members of management to discuss cybersecurity risks, strategy, and threats.
Our CISO is responsible for implementing the cybersecurity program which is comprised of Cybersecurity GRC (Governance, 
Risk & Compliance), Cybersecurity Architecture, Engineering & Operations, and a Cyber Fusion Center that includes Threat 
Intelligence, Vulnerability Management, & Incident Response. Our CISO has more than 30 years of experience in the oil and gas 
industry and has held various leadership and strategic roles across IT, software R&D and marketing, including collectively 
serving as a chief information security officer for seven years at two publicly traded companies. Our CISO also holds an 
Executive Master in Cybersecurity degree, a Master of Computer Science degree, and undergraduate degrees in both computer 
science and mathematics.
Our CISO works at the direction of the CDO, who has more than 20 years of executive IT leadership experience and leads the 
company’s Digital and Information Technology functions that seek to provide innovative, secure, and reliable technology products 
and services to MPC and its customers. Prior to joining MPC in 2021, our CDO was employed by GE and its subsidiary 
companies for over 20 years, holding several executive IT leadership roles with increasing responsibility. He was then named 
Senior Vice President and Chief Information Officer of Services for parent company GE in 2017 and was later named the Vice 
President and Chief Information Officer of GE Healthcare. Our CDO holds a Bachelor’s degree in Business Administration, 
Management and Information Systems.
32

Item 2. Properties 
We believe that our properties and facilities are adequate for our operations and that our facilities are adequately maintained. 
See the following sections for details of our assets by segment.
REFINING & MARKETING
The table below sets forth the location and crude oil refining capacity for each of our refineries as of December 31, 2024. 
Refining throughput can exceed crude oil refining capacity due to the processing of other charge and blendstocks in addition to 
crude oil and the timing of planned turnaround and major maintenance activity.
Refinery
Crude Oil Refining 
Capacity (mbpcd)
Gulf Coast Region
Galveston Bay, Texas City, Texas
 
631 
Garyville, Louisiana
 
606 
Subtotal Gulf Coast region
 
1,237 
Mid-Continent Region
Catlettsburg, Kentucky
 
300 
Robinson, Illinois
 
253 
Detroit, Michigan
 
144 
El Paso, Texas
 
133 
St. Paul Park, Minnesota
 
105 
Canton, Ohio
 
100 
Mandan, North Dakota
 
71 
Salt Lake City, Utah
 
68 
Subtotal Mid-Continent region
 
1,174 
West Coast Region
Los Angeles, California
 
365 
Anacortes, Washington
 
119 
Kenai, Alaska
 
68 
Subtotal West Coast region
 
552 
Total 
 
2,963 
33

The following table sets forth the approximate number of locations where jobbers maintain branded outlets, marketing fuels 
mainly under the Marathon and ARCO brands as well as Shell, Mobil, Tesoro and other brands, as of December 31, 2024.
Location
Number of
Branded Outlets
Alabama
 
409 
Alaska
 
77 
Arizona
 
74 
California
 
300 
Colorado
 
12 
District of Columbia
 
2 
Florida
 
619 
Georgia
 
460 
Idaho
 
104 
Illinois
 
177 
Indiana
 
666 
Iowa
 
9 
Kentucky
 
502 
Louisiana
 
76 
Maryland
 
66 
Massachusetts
 
1 
Mexico
 
281 
Michigan
 
713 
Minnesota
 
314 
Mississippi
 
146 
Missouri
 
8 
Nevada
 
19 
New Jersey
 
9 
New Mexico
 
40 
New York
 
68 
North Carolina
 
238 
North Dakota
 
120 
Ohio
 
901 
Oregon
 
62 
Pennsylvania
 
84 
Rhode Island
 
3 
South Carolina
 
109 
South Dakota
 
31 
Tennessee
 
397 
Texas
 
14 
Utah
 
104 
Virginia
 
227 
Washington
 
115 
West Virginia
 
120 
Wisconsin
 
57 
Wyoming
 
4 
Total
 
7,738 
34

The Refining & Marketing segment sells transportation fuels through long-term fuel supply contracts to direct dealer locations, 
primarily under the ARCO brand. The following table sets forth the number of direct dealer locations by state as of December 31, 
2024.
Location
Number of
Locations
Arizona
 
68 
California
 
972 
Nevada
 
118 
New Mexico
 
1 
Ohio
 
1 
Oregon
 
1 
Total
 
1,161 
The following table sets forth details about our Refining & Marketing owned and operated terminals as of December 31, 2024. 
See the Midstream - MPLX section for information with respect to MPLX owned and operated terminals. 
Owned and Operated Terminals
Number of
Terminals
Tank Storage Capacity 
(mbbls)
Light Products Terminals:
Alaska
 
1 
 
202 
New York
 
1 
 
334 
Subtotal light products terminals
 
2 
 
536 
Asphalt Terminals:
Florida
 
1 
 
263 
Indiana
 
1 
 
121 
Kentucky
 
4 
 
537 
Louisiana
 
1 
 
54 
Michigan
 
1 
 
12 
New York
 
1 
 
417 
Ohio
 
4 
 
2,207 
Pennsylvania
 
1 
 
451 
Tennessee
 
2 
 
480 
Subtotal asphalt terminals
 
16 
 
4,542 
Total owned and operated terminals
 
18 
 
5,078 
35

MIDSTREAM - MPLX
The following table sets forth certain information relating to MPLX’s crude oil and refined products pipeline systems and storage 
assets as of December 31, 2024.
Total crude oil pipeline systems(a)(b)
2" - 42"
 
5,172 
Various
Total refined products pipeline systems(a)(b)(c)
4" - 36"
 
3,787 
Various
Barge Docks (mbpd)
 
4,893 
Storage assets: (mbbls)
Refining Logistics(d)
 
93,017 
Tank Farms
 
33,718 
Caverns
 
3,632 
Pipeline System or Storage Asset
Diameter 
(inches)
Length
(miles)
Capacity
(a) 
Includes approximately 16 miles of crude oil pipeline and 2 miles of refined product pipeline leased from third parties.
(b) 
Includes approximately 1,207 miles of inactive crude oil pipeline and 197 miles of inactive refined product pipeline.
(c) 
Includes approximately 87 miles and 17 miles of refined product pipelines in which MPLX has partial ownership of 65 percent and 50 
percent, respectively.
(d) 
Refining logistics assets primarily include tankage. MPLX owns refining logistics assets at the Martinez Renewables joint venture facility with 
5,914 mbbls of storage capacity associated with the facility and has entered into terminalling and storage service agreements with the joint 
venture and its partners to provide logistics services for the facility.
The following table sets forth information regarding the crude oil and refined product pipeline systems which MPLX has an 
interest in through ownership of its equity method investments as of December 31, 2024.
Diameter 
(inches)
Length
(miles)
Ownership 
Percentage
Crude Oil Systems:
MarEn Bakken Company LLC(a)
30"
 
1,916 
 25 %
Minnesota Pipe Line Company LLC
16" - 24"
 
975 
 17 %
W2W Holdings LLC(b)
24" - 36"
 
652 
 50 %
Illinois Extension Pipeline Company LLC
24"
 
168 
 35 %
Andeavor Logistics Rio Pipeline LLC
12"
 
119 
 67 %
LOCAP LLC
48"
 
57 
 59 %
LOOP LLC
48"
 
48 
 41 %
Refined Product Systems:
Explorer Pipeline Company
10" - 28"
 
1,872 
 25 %
(a)
The investment in MarEn Bakken Company LLC includes MPLX’s 9.19 percent indirect interest in a joint venture that owns and operates the 
Dakota Access Pipeline and Energy Transfer Crude Oil Pipeline projects (collectively referred to as the “Bakken Pipeline system”).
(b)
The investment in W2W Holdings LLC includes MPLX’s 16 percent indirect interest in Wink to Webster Pipeline LLC.
36

The following table sets forth details about MPLX owned and operated terminals as of December 31, 2024. Additionally, MPLX 
has partial ownership interest in one terminal.
Owned and Operated Terminals
Number of
Terminals
Tank Storage Capacity 
(mbbls)
Refined Products Terminals:
Alabama
 
2 
 
443 
Alaska
 
3 
 
1,540 
California
 
8 
 
3,472 
Florida
 
3 
 
2,265 
Georgia
 
4 
 
952 
Idaho
 
3 
 
1,020 
Illinois
 
2 
 
562 
Indiana
 
7 
 
3,770 
Kentucky
 
6 
 
2,587 
Louisiana
 
2 
 
5,469 
Michigan
 
8 
 
2,440 
Minnesota
 
1 
 
13 
New Mexico
 
2 
 
467 
North Carolina
 
3 
 
1,343 
North Dakota
 
1 
 
— 
Ohio
 
12 
 
3,144 
Pennsylvania
 
1 
 
390 
South Carolina
 
1 
 
371 
Tennessee
 
4 
 
1,148 
Texas
 
1 
 
76 
Utah
 
1 
 
21 
Washington
 
4 
 
920 
West Virginia
 
2 
 
1,564 
Subtotal light products terminals
 
81 
 
33,977 
Asphalt Terminals
Arizona
 
3 
 
552 
Minnesota
 
1 
 
— 
Nevada(a)
 
1 
 
274 
New Mexico
 
1 
 
36 
Texas
 
1 
 
206 
Subtotal asphalt terminals
 
7 
 
1,068 
Total owned and operated terminals
 
88 
 
35,045 
(a) 
MPLX accounts for this terminal as an equity method investment.
The following table sets forth details about MPLX barges and towboats as of December 31, 2024.
Class of Equipment
Number
in Class
Capacity
(mbbls)
Inland tank barges
 
319 
 
8,568 
Inland towboats
 
29 
N/A
37

The following tables set forth certain information relating to MPLX’s consolidated and operated joint venture gas processing 
facilities, fractionation facilities, natural gas gathering systems, NGL pipelines and natural gas pipelines as of and for the year 
ended December 31, 2024. 
Gas Processing Complexes
Design 
Throughput 
Capacity 
(MMcf/d)
Natural Gas
Throughput 
(MMcf/d)(a)
Utilization
of Design
Capacity(a)
Marcellus Operations
 
6,520 
 
5,974 
 92 %
Utica Operations
 
1,325 
 
832 
 63 %
Southwest Operations(b)
 
2,745 
 
1,844 
 70 %
Southern Appalachia Operations
 
425 
 
215 
 51 %
Bakken Operations(c)
 
185 
 
182 
 98 %
Rockies Operations
 
1,177 
 
616 
 52 %
Total 
 
12,377 
 
9,663 
 79 %
(a) 
Natural gas throughput is a weighted average for days in operation. The utilization of design capacity has been calculated using the 
weighted average design throughput capacity.
(b) 
The capacity presented above includes MPLX’s proportionate share of Centrahoma Processing LLC’s processing capacity of 550 MMcf/d, 
as MPLX owns a non-operating 40 percent interest in this joint venture. Actual throughput of 118 MMcf/d representing MPLX’s share of 
processed volumes is also included and used to compute the utilization presented above.
(c) 
Includes volumes processed at third-party facilities in the Bakken.
Fractionation Facilities
Design
Throughput
Capacity 
(mbpd)
NGL 
Throughput 
(mbpd)(a)
Utilization
of Design
Capacity(a)
Marcellus Operations
 
413 
 
336 
 81 %
Utica Operations(b)
 
— 
 
— 
 — %
Southern Appalachia Operations
 
24 
 
12 
 50 %
Bakken Operations
 
33 
 
20 
 61 %
Rockies Operations
 
5 
 
5 
 100 %
Total
 
475 
 
373 
 78 %
(a) 
NGL throughput is a weighted average for days in operation. The utilization of design capacity has been calculated using the weighted 
average design throughput capacity.
(b) 
MPLX operates a condensate stabilization facility with a capacity of 23 mbpd and 77 thousand barrels of condensate storage. Actual NGL 
throughput at this facility was 13 mbpd for the year ended December 31, 2024.
De-ethanization Facilities
Design
Throughput
Capacity 
(mbpd)
NGL 
Throughput 
(mbpd)(a)
Utilization
of Design
Capacity(a)
Marcellus Operations
 
309 
 
265 
 86 %
Utica Operations
 
40 
 
16 
 40 %
Rockies Operations
 
5 
 
— 
 — %
Total
 
354 
 
281 
 80 %
(a) 
NGL throughput is a weighted average for days in operation. The utilization of design capacity has been calculated using the weighted 
average design throughput capacity.
38

Natural Gas Gathering Systems
Design
Throughput
Capacity 
(MMcf/d)
Natural Gas
Throughput 
(MMcf/d)(a)
Utilization
of Design
Capacity(a)
Marcellus Operations
 
1,622 
 
1,521 
 94 %
Utica Operations
 
3,903 
 
2,544 
 68 %
Southwest Operations
 
3,180 
 
1,698 
 55 %
Bakken Operations
 
239 
 
183 
 77 %
Rockies Operations(b)
 
1,299 
 
633 
 49 %
Total
 
10,243 
 
6,579 
 66 %
(a) 
Natural gas throughput is a weighted average for days in operation. The utilization of design capacity has been calculated using the 
weighted average design throughput capacity.
(b) 
Includes 47 MMcf/d of volumes gathered for third parties by MPLX’s operated joint venture, Rendezvous Gas Services, L.L.C. (“RGS”). 
Excludes RGS gathering capacity of 1,032 MMcf/d and volumes gathered by RGS which generally interconnect with MPLX owned Rockies 
region gathering systems.
The following table sets forth certain information relating to MPLX’s NGL pipelines as of December 31, 2024.
NGL Pipelines
Diameter 
(inches)
Length
(miles)
Marcellus Operations
6"- 20"
 
443 
Utica Operations
4" - 20"
 
185 
Southern Appalachia Operations
6" - 8"
 
140 
Southwest Operations
6" - 16"
 
137 
Bakken Operations
6" - 12"
 
104 
Rockies Operations
4" - 8"
 
36 
Total
 
1,045 
In addition to the MPLX-operated equity method investments included in the above tables, MPLX also has ownership interests in 
natural gas & NGL pipeline systems through the following entities:
Natural Gas Pipelines:
Delaware Basin Residue, LLC(a)
12" - 42"
249
 10 %
MXP Parent, LLC(b)
36" - 42"
580
 5 %
WPC Parent, LLC(c)
36" - 42"
541
 30 %
NGL Pipelines:
Panola Pipeline Company, LLC
8" - 20"
253
 15 %
Diameter 
(inches)
Length
(miles)
Ownership 
Percentage
(a) 
Includes Agua Blanca Pipeline and Carlsbad Gateway Pipeline.
(b) 
Includes Matterhorn Express Pipeline.
(c) 
Includes MPLX’s indirect interest in Whistler Pipeline as well as its 70 percent indirect ownership in the ADCC Pipeline lateral. Also includes 
50 percent indirect interest in Waha Gas Storage, which primarily owns natural gas storage facilities.
39

MIDSTREAM - MPC-RETAINED ASSETS AND INVESTMENTS
The following table sets forth certain information relating to our crude oil and refined products pipeline systems not owned by 
MPLX. 
As of December 31, 2024, we had partial ownership interests in the following pipeline companies.
Pipeline Company
Diameter 
(inches)
Length 
(miles)
Ownership
Interest
Operated
by MPL
Crude oil pipeline companies:
Capline Pipeline Company LLC
40”
 
644 
 33 %
Yes
Gray Oak Pipeline, LLC
8” - 30”
 
845 
 25 %
No
LOOP(a)
48”
 
48 
 10 %
No
Total
 
1,489 
Refined products pipeline companies:
Ascension Pipeline Company LLC
12”
 
34 
 50 %
No
Centennial Pipeline LLC(b)
24” - 26”
 
793 
 50 %
Yes
Muskegon Pipeline LLC
10” - 12”
 
170 
 60 %
Yes
Wolverine Pipe Line Company
6” - 18”
 
798 
 6 %
No
Total
 
1,795 
(a) 
Represents interest retained by MPC and excludes MPLX’s 41 percent ownership interest in LOOP. Pipeline mileage is excluded from total 
as it is included with MPLX assets.
(b) 
All system pipeline miles are inactive.
The following table sets forth details about our ocean vessels as of December 31, 2024.
Class of Equipment
Number
in Class
Capacity
(mbbls)
Jones Act medium range product tankers
 
4 
 
1,320 
Jones Act 750 Series ATB vessels
 
3 
 
990 
RENEWABLE DIESEL
Our Dickinson, North Dakota, renewables facility has the capacity to produce 184 million gallons per year of renewable diesel 
from corn oil, soybean oil, fats and greases. The Martinez, California renewable diesel facility has the capacity to produce 730 
million gallons per year.
Our Green Bison Soy Processing, LLC joint venture with ADM includes a facility in Spiritwood, North Dakota, which has capacity 
to produce approximately 600 million pounds of refined soybean oil annually, enough feedstock for approximately 75 million 
gallons of renewable diesel per year. 
We own a feedstock aggregation facility in Cincinnati, Ohio and a pre-treatment facility in Beatrice, Nebraska. These facilities 
supply renewable agricultural feedstocks to our Dickinson and Martinez facilities.
Item 3. Legal Proceedings
We are the subject of, or a party to, a number of pending or threatened legal actions, contingencies and commitments involving a 
variety of matters, including laws and regulations relating to the environment. While it is possible that an adverse result in one or 
more of the lawsuits or proceedings in which we are a defendant could be material to us, based upon current information and our 
experience as a defendant in other matters, we believe that these lawsuits and proceedings, individually or in the aggregate, will 
not have a material adverse effect on our consolidated results of operations, financial position or cash flows.
Item 103 of Regulation S-K promulgated by the SEC requires disclosure of certain environmental matters when a governmental 
authority is a party to the proceedings and such proceedings involve potential monetary sanctions, unless we reasonably believe 
that the matter will result in no monetary sanctions, or in monetary sanctions, exclusive of interest and costs, of less than a 
specified threshold. We use a threshold of $1 million for this purpose. 
Climate Change Litigation
Governmental and other entities in various states have filed climate-related lawsuits against a number of energy companies, 
including MPC. Although each suit is separate and unique, the lawsuits generally allege defendants made knowing 
misrepresentations about knowingly concealing, or failing to warn of the impacts of their petroleum products, which led to 
40

increased demand and worsened climate change. Plaintiffs are seeking unspecified damages and abatement under various tort 
theories, as well as breaches of consumer protection and unfair trade statutes. Similar lawsuits may be filed in other jurisdictions. 
The names of the courts in which the proceedings are pending and the dates instituted are as follows:
State of Rhode Island
July 2, 2018
Superior Court of Providence County
Mayor and City Council of 
Baltimore, Maryland
July 20, 2018
Circuit Court of Baltimore County; The Appellate Court of 
Maryland
City and County of Honolulu, Hawaii
March 9, 2020
Circuit Court of the First Circuit (State of Hawaii)
City of Charleston, South Carolina
September 9, 2020
Court of Common Pleas of the 9th Circuit; US Court of 
Appeals for the Fourth Circuit
State of Delaware
September 10, 2020
Superior Court of Hudson County
County of Maui, Hawaii
October 12, 2020
Circuit Court of the Second Circuit (State of Hawaii)
City of Annapolis, Maryland
February 22, 2021
Maryland Circuit Court, Anne Arundel County
Anne Arundel County, Maryland
April 26, 2021
Maryland Circuit Court, Anne Arundel County
County of Multnomah, Oregon
June 22, 2023
Circuit Court for the State of Oregon
Plaintiff
Date Instituted
Name of Court(s) where pending
Dakota Access Pipeline
MPLX holds a 9.19 percent indirect interest in a joint venture (“Dakota Access”) which owns and operates the Bakken Pipeline 
system. In 2020, the U.S. District Court for the District of Columbia (“D.D.C.”) ordered the U.S. Army Corps of Engineers (“Army 
Corps”), which granted permits and an easement for the Bakken Pipeline system, to prepare an environmental impact statement 
(“EIS”) relating to an easement under Lake Oahe in North Dakota. The D.D.C. later vacated the easement going forward. The 
Army Corps issued a draft EIS in September 2023 detailing various options for the easement, including denying the easement, 
approving the easement with additional measures, rerouting the easement, or approving the easement with no changes. The 
Army Corps has not selected a preferred alternative, but will make a decision in its final review, after considering input from the 
public and other agencies. The pipeline remains operational while the Army Corps finalizes its decision which will follow the 
issuance of the final EIS. According to public statements from Army Corps officials, the EIS is now expected to be issued in 2025. 
MPLX has entered into a Contingent Equity Contribution Agreement whereby it, along with the other joint venture owners in the 
Bakken Pipeline system, has agreed to make equity contributions to the joint venture upon certain events occurring to allow the 
entities that own and operate the Bakken Pipeline system to satisfy their senior note payment obligations. The senior notes were 
issued to repay amounts owed by the pipeline companies to fund the cost of construction of the Bakken Pipeline system. 
If the vacatur of the easement results in a temporary shutdown of the pipeline, MPLX would have to contribute its 9.19 percent 
pro rata share of funds required to pay interest accruing on the notes and any portion of the principal that matures while the 
pipeline is shutdown. MPLX also expects to contribute its 9.19 percent pro rata share of any costs to remediate any deficiencies 
to reinstate the easement and/or return the pipeline into operation. If the vacatur of the easement results in a permanent 
shutdown of the pipeline, MPLX would have to contribute its 9.19 percent pro rata share of the cost to redeem the bonds 
(including the one percent redemption premium required pursuant to the indenture governing the notes) and any accrued and 
unpaid interest. As of December 31, 2024, our maximum potential undiscounted payments under the Contingent Equity 
Contribution Agreement were approximately $78 million.
Tesoro High Plains Pipeline
In July 2020, Tesoro High Plains Pipeline Company, LLC (“THPP”), a subsidiary of MPLX, received a Notification of Trespass 
Determination from the Bureau of Indian Affairs (“BIA”) relating to a portion of the Tesoro High Plains Pipeline that crosses the 
Fort Berthold Reservation in North Dakota. The notification demanded the immediate cessation of pipeline operations and 
assessed trespass damages of approximately $187 million. After subsequent appeal proceedings and in compliance with a new 
order issued by the BIA, in December 2020, THPP paid approximately $4 million in assessed trespass damages and ceased use 
of the portion of the pipeline that crosses the property at issue. In March 2021, the BIA issued an order purporting to vacate the 
BIA's prior orders related to THPP’s alleged trespass and direct the Regional Director of the BIA to reconsider the issue of 
THPP’s alleged trespass and issue a new order. In April 2021, THPP filed a lawsuit in the District of North Dakota against the 
United States of America, the U.S. Department of the Interior and the BIA (collectively, the “U.S. Government Parties”) 
challenging the March 2021 order purporting to vacate all previous orders related to THPP’s alleged trespass. On February 8, 
2022, the U.S. Government Parties filed their answer and counterclaims to THPP’s suit claiming THPP is in continued trespass 
with respect to the pipeline and seek disgorgement of pipeline profits from June 1, 2013 to present, removal of the pipeline and 
remediation. On November 8, 2023, the District Court of North Dakota granted THPP’s motion to sever and stay the U.S. 
Government Parties’ counterclaims. The case will proceed on the merits of THPP’s challenge to the March 2021 order purporting 
to vacate all previous orders related to THPP’s alleged trespass. THPP continues not to operate the portion of the pipeline that 
crosses the property at issue.
41

Edwardsville Incident
In March 2022, the State of Illinois brought an action in Madison County Circuit Court in Illinois against Marathon Pipe Line LLC, 
an indirect wholly owned subsidiary of MPLX, asserting various violations and demanding a permanent injunction and civil 
penalties in connection with a release of crude oil on the Wood River to Patoka 22” line near Edwardsville, Illinois. In September 
2023, the U.S. Department of Justice and EPA confirmed they will be pursuing federal enforcement for alleged Clean Water Act 
violations arising from this incident as well as three pipeline incidents in Illinois and Indiana in 2018, 2020 and 2021. We cannot 
currently estimate the timing of the resolution of this matter but do not believe any civil penalty will have a material impact on our 
consolidated results of operations, financial position or cash flows. 
EPA Enforcement
On December 18, 2023, EPA Region 6 issued a Notice of Violation and Opportunity to Confer alleging violations of the National 
Emission Standard for Benzene Waste Operations at 40 C.F.R. Part 61, Subpart FF (“BWON”) and of the New Source 
Performance Standards for Volatile Organic Compounds from Petroleum Wastewater Systems at 40 C.F.R. Part 60, Subpart 
QQQ (“NSPS QQQ”) at our Garyville refinery. On January 10, 2024, EPA Region 5 issued a Finding of Violation alleging 
violations of BWON and NSPS QQQ at our St. Paul Park refinery. In addition, EPA has conducted a compliance inspection at our 
Anacortes refinery. In February 2024, EPA published an enforcement alert noting its ongoing efforts to evaluate petroleum 
refineries’ compliance with BWON and NSPS QQQ. We have begun discussions with EPA to resolve these matters. We cannot 
currently estimate the amount of any civil penalty or the timing of the resolution of these matters, but do not believe any civil 
penalty will have a material impact on our consolidated results of operations, financial position or cash flows.
On August 30, 2012, MPC entered into a consent decree with the EPA regarding the operation of flares at six of our refineries. 
The consent decree was modified on September 15, 2016. On December 20, 2023, MPC formally submitted a request to the 
EPA to terminate the consent decree. The EPA may seek payment of stipulated penalties for violations of the consent decree as 
a condition of termination. Based on negotiations with the EPA in the third quarter of 2024, we believe resolution of the stipulated 
penalty demands may result in the payment of $1 million or more, but do not believe any stipulated penalties will have a material 
impact on our consolidated results of operations, financial position or cash flows.
Item 4. Mine Safety Disclosures
Not applicable
42

PART II
Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer 
Purchases of Equity Securities 
Our common stock is listed on the NYSE and traded under the symbol “MPC.” As of February 21, 2025, there were 
approximately 23,386 registered holders of our common stock.
Issuer Purchases of Equity Securities
The following table sets forth a summary of our purchases during the quarter ended December 31, 2024, of equity securities that 
are registered by MPC pursuant to Section 12 of the Securities Exchange Act of 1934, as amended:
Millions of Dollars
Period
Total Number of 
Shares 
Purchased
Average 
Price Paid 
per Share(a)
Total Number of
Shares Purchased as
Part of Publicly
Announced Plans
or Programs
Maximum Dollar Value 
of Shares that May Yet 
Be Purchased Under 
the Plans or 
Programs(b)(c)
10/1/2024-10/31/2024
 
3,099,330 
$ 
161.38 
 
3,099,330 
$ 
3,541 
11/1/2024-11/30/2024
 
1,257,914 
 
157.45 
 
1,257,914 
 
8,343 
12/1/2024-12/31/2024
 
4,145,124 
 
142.75 
 
4,145,124 
 
7,752 
Total
 
8,502,368 
 
151.71 
 
8,502,368 
 
(a) 
Amounts in this column reflect the weighted average price paid for shares repurchased under our share repurchase authorizations. The 
weighted average price includes any commissions paid to brokers during the relevant period. The weighted average price does not include 
any excise tax on share repurchases.
(b) 
On April 30, 2024, we announced that our board of directors had approved a $5.0 billion share repurchase authorization. On November 5, 
2024, we announced that our board of directors had approved an additional $5.0 billion share repurchases authorization. These share 
repurchase authorizations have no expiration date.
(c) 
The maximum dollar value remaining has been reduced by the amount of any commissions paid to brokers. The maximum dollar value 
remaining has not been reduced by the amount of any excise tax.
43

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations
All statements in this section, other than statements of historical fact, are forward-looking statements that are inherently 
uncertain. See “Disclosures Regarding Forward-Looking Statements” and Item 1A. Risk Factors for a discussion of the factors 
that could cause actual results to differ materially from those projected in these statements. The following information concerning 
our business, results of operations and financial condition should also be read in conjunction with the information included under 
Item 1. Business, Item 1A. Risk Factors and Item 8. Financial Statements and Supplementary Data.
EXECUTIVE SUMMARY
Business Update
The global macro environment continues to deliver refined product demand growth. In 2024, we saw steady year-over-year 
demand for gasoline and diesel and growing demand for jet fuel. Longer term, demand growth is expected to exceed the net 
supply impact from limited capacity additions through the end of the decade and announced and expected refinery 
rationalizations. We anticipate these fundamentals, as well as the U.S. refining industry’s current structural advantages over the 
rest of the world, will support a constructive environment for U.S. refiners.
In June 2023, the California legislature adopted and implemented certain provisions of Senate Bill No.2 (such statute, together 
with any regulations contemplated or issued thereunder, “SB X1-2”), which authorizes the CEC to establish a “maximum gross 
gasoline refining margin” with respect to refining activities in California, as well as establish penalties for refiners for exceeding 
the yet to be issued margin cap. The law further expands on existing reporting requirements for refiners to the CEC. In October 
2024, California’s governor signed Assembly Bill No.1 (such statute, together with any regulations contemplated or issued 
thereunder, “AB X2-1”), into law, authorizing the CEC to require that petroleum refiners maintain a minimum inventory of 
transportation fuels as well as require petroleum refiners to plan for resupply during scheduled maintenance. We will evaluate the 
impact that SB X1-2 and AB X2-1 and any associated forthcoming CEC regulations may have on our current or anticipated future 
operations in California and results of operations when SB X1-2 or AB X2-1 are fully implemented.
In response to the current business environment, we continue to focus on the following priorities for our business:
Commitment to Safety, Reliability and Sustainability
We remain steadfast in our commitment to safely and reliably operate our assets and protect the health and safety of our 
employees. We are focused on sustainable structural changes to improve our cost competitiveness while maintaining safe and 
reliable operations. Our approach to sustainability spans the environmental, social and governance dimensions of our business. 
That means strengthening resiliency by lowering the carbon intensity and conserving natural resources; innovating for the future 
by investing in renewables and emerging technologies; and embedding sustainability in decision-making and in how we engage 
our people and many stakeholders. Specifically, in 2022, we were the first among U.S. independent refiners to establish a 2030 
target to reduce absolute Scope 3 - Category 11 GHG emissions. This goal added to our existing targets for reducing Scope 1 & 
2 GHG emissions intensity, for lowering methane emissions intensity and for lowering our freshwater withdrawal intensity. 
Operational Excellence
We are committed to achieving operational excellence by reducing costs, improving efficiency, driving operational improvements 
and being disciplined in capital allocation. This means lowering our costs in all aspects of our business and challenging 
ourselves to be disciplined in every dollar we spend across our organization. We look to optimize our portfolio of investment 
opportunities to ensure efficient deployment of capital focusing on projects with the highest returns.
Commercial Performance
We are focused on leveraging the complexity of our facilities by selecting advantaged raw materials, new approaches in the 
commercial space to be more dynamic amidst changing market conditions and achieving technological improvements to 
advance our commercial performance. A near-term focus has been securing advantaged renewable feedstocks as we continue 
to advance our renewable fuels production capabilities.
Integrated Value Chain Optimization
We are committed to leveraging our value chain so that we are a leader in operational, financial, and sustainability performance. 
Our goal is to improve value chain optimization with a more integrated and advanced approach to decision making so that each 
individual asset generates free-cash-flow back to the business and contributes to shareholder returns. With our investments, we 
are focused on high returning projects that we believe will enhance the competitiveness of our portfolio, including our 
investments in sustainable fuels and technologies that lower our carbon intensity as the global energy mix evolves.
44

Strategic Updates
Midstream Growth Transactions
On July 31, 2024, MPLX exercised its right of first offer under the BANGL, LLC joint venture agreement to purchase an additional 
20 percent ownership interest in BANGL, LLC for $210 million cash, increasing total ownership interest to 45 percent. BANGL is 
a natural gas liquids pipeline system connecting the Delaware and Midland basins to the fractionation market in the Gulf Coast 
and export markets.
On May 29, 2024, MPLX and its joint venture partner contributed their respective membership interest in Whistler Pipeline, LLC 
to a newly formed joint venture, WPC Parent, LLC and issued a 19 percent voting interest in WPC Parent, LLC to an affiliate of 
Enbridge Inc. in exchange for the contribution of cash and the Rio Bravo Pipeline project (collectively, the “Whistler Joint Venture 
Transaction”). The combined platform connects Permian supply to incremental LNG export markets and supports the 
development of additional pipeline projects. As a result of the transaction, MPLX’s voting interest in the joint venture was reduced 
from 37.5 percent to 30.4 percent. MPLX recognized a gain of $151 million at closing and received a cash distribution of 
$134 million, recorded as a return of capital, related to the dilution of the ownership interest. 
On March 22, 2024, MPLX used $625 million of cash to purchase additional ownership interest in existing joint ventures and 
gathering assets, which will enhance MPLX’s position in the Utica basin. Prior to the acquisition, MPLX owned an indirect interest 
in Ohio Gathering Company, L.L.C. (“OGC”) and a direct interest in Ohio Condensate Company, L.L.C. (“OCC”) and now owns a 
combined 73 percent interest in OGC and a 100 percent interest in OCC, and a dry gas gathering system in the Utica basin.
See Item 8. Financial Statements and Supplementary Data – Note 14 for additional information on these transactions.
Share Repurchase Authorization
On November 5, 2024, we announced that our board of directors approved a $5.0 billion share repurchase authorization that is in 
addition to the $5.0 billion share repurchase authorization announced on April 30, 2024. The share repurchase authorizations 
have no expiration date. Future repurchases under these authorizations will depend on the macro environment, cash available 
after opportunities for capital investment and growth of the business and market conditions. As of December 31, 2024, MPC had 
$7.75 billion remaining under its share repurchase authorizations. 
45

Results
In the fourth quarter of 2024, we established a Renewable Diesel segment, which includes renewable diesel activities historically 
reported in the Refining & Marketing segment. Prior period segment information has been recast for comparability.
Our chief operating decision maker (“CODM”) evaluates the performance of our segments using segment adjusted EBITDA. 
Amounts included in income before income taxes and excluded from segment adjusted EBITDA include: (i) depreciation and 
amortization; (ii) net interest and other financial costs; (iii) turnaround expenses; and (iv) other adjustments as deemed 
necessary. These items are either: (i) believed to be non-recurring in nature; (ii) not believed to be allocable or controlled by the 
segment; or (iii) are not tied to the operational performance of the segment.
Select results for continuing operations for 2024 and 2023 are reflected in the following table. 
(Millions of dollars)
2024
2023
Segment adjusted EBITDA for reportable segments
Refining & Marketing
$ 
5,703 
$ 
13,705 
Midstream
 
6,544 
 
6,171 
Renewable Diesel
 
(150) 
 
(64) 
Total reportable segments
$ 
12,097 
$ 
19,812 
Reconciliation of segment adjusted EBITDA for reportable segments to income 
from continuing operations before income taxes
Total reportable segments
$ 
12,097 
$ 
19,812 
Corporate
 
(774) 
 
(737) 
Refining & Renewable Diesel planned turnaround costs
 
(1,404) 
 
(1,201) 
Renewable Diesel JV planned turnaround costs(a)
 
(9) 
 
(25) 
Garyville incident response costs
 
— 
 
(16) 
LIFO inventory (charge) credit
 
161 
 
(145) 
Gain on sale of assets(b)
 
151 
 
198 
Depreciation and amortization
 
(3,337) 
 
(3,307) 
Renewable Diesel JV depreciation and amortization(a)
 
(89) 
 
(65) 
Net interest and other financial costs
 
(839) 
 
(525) 
Income from continuing operations before income taxes
$ 
5,957 
$ 
13,989 
Net Income attributable to MPC per diluted share
$ 
10.08 
$ 
23.63 
(a) 
Represents MPC’s pro-rata share of expenses from joint ventures included within the Renewable Diesel segment. 
(b) 
2024 includes the gain from the Whistler Joint Venture Transaction. 2023 includes the $92 million gain associated with the remeasurement 
of MPLX’s existing equity investment in Torñado arising from the acquisition of the remaining 40 percent interest and the $106 million gain 
on the sale of our interest in South Texas Gateway. See Item 8. Financial Statements and Supplementary Data - Note 14. 
Net income attributable to MPC decreased $6.24 billion, or $13.55 per diluted share, in 2024 compared to 2023 primarily due to 
lower Refining & Marketing margins partially offset by a decreased provision for income taxes.
Refer to the Results of Operations section for a discussion of financial results by segment for the three years ended 
December 31, 2024.
MPLX
We received limited partner distributions of $2.27 billion and $2.06 billion from MPLX during 2024 and 2023, respectively. We 
owned approximately 647 million MPLX common units at December 31, 2024 with a market value of $30.99 billion based on the 
December 31, 2024 closing unit price of $47.86. On January 22, 2025, MPLX declared a quarterly cash distribution of $0.9565 
per common unit, which was paid February 14, 2025. As a result, MPLX made distributions totaling $972 million to its common 
unitholders. MPC’s portion of these distributions was approximately $619 million.
During the year ended December 31, 2024, MPLX repurchased approximately 8 million MPLX common units at an average cost 
per unit of $43.04 and paid $326 million of cash. As of December 31, 2024, $520 million remained available under the 
authorization for future repurchases.
See Item 8. Financial Statements and Supplementary Data – Note 5 for additional information on MPLX.
46

OVERVIEW OF SEGMENTS
Refining & Marketing
Refining & Marketing segment adjusted EBITDA depends largely on our refinery throughputs, Refining & Marketing margin, 
refining operating costs and distribution costs. Our total refining capacity was 2,963 mbpcd, 2,950 mbpcd and 2,898 mbpcd as of 
December 31, 2024, 2023 and 2022, respectively. 
Refining & Marketing margin is the difference between the prices of refined products sold and the costs of crude oil and other 
charge and blendstocks refined, including the costs to transport these inputs to our refineries and the costs of products 
purchased for resale. The crack spread is a measure of the difference between market prices for refined products and crude oil, 
commonly used by the industry as a proxy for the refining margin. Crack spreads can fluctuate significantly, particularly when 
prices of refined products do not move in the same relationship as the cost of crude oil. As a performance benchmark and a 
comparison with other industry participants, we calculate Gulf Coast, Mid-Continent and West Coast crack spreads that we 
believe most closely track our operations and slate of products. The following are used for these crack-spread calculations:
•
The Gulf Coast crack spread uses three barrels of MEH crude producing two barrels of USGC CBOB gasoline and one 
barrel of USGC ULSD; 
•
The Mid-Continent crack spread uses three barrels of WTI crude producing two barrels of Chicago CBOB gasoline and 
one barrel of Chicago ULSD; and
•
The West Coast crack spread uses three barrels of ANS crude producing two barrels of LA CARBOB and one barrel of 
LA CARB Diesel.
Our refineries can process a variety of sweet and sour crude oil, which typically can be purchased at a discount to crude oil 
referenced in our Gulf Coast, Mid-Continent and West Coast crack spreads. The amount of these discounts, which we refer to as 
the sweet differential and the sour differential, can vary significantly, causing our Refining & Marketing margin to differ from 
blended crack spreads. In general, larger sweet and sour differentials will enhance our Refining & Marketing margin.
Future crude oil differentials will be dependent on a variety of market and economic factors, as well as U.S. energy policy.
The following table provides sensitivities showing an estimated change in annual Refining & Marketing segment adjusted 
EBITDA due to potential changes in market conditions. 
(Millions of dollars)
 
Blended crack spread sensitivity(a) (per $1.00/barrel change)
$ 
1,100 
Sour differential sensitivity(b) (per $1.00/barrel change)
 
515 
Sweet differential sensitivity(c) (per $1.00/barrel change)
 
515 
Natural gas price sensitivity(d) (per $1.00/MMBtu)
 
350 
(a) 
Crack spread based on 42 percent MEH, 40 percent WTI and 18 percent ANS with Gulf Coast, Mid-Continent and West Coast product 
pricing, respectively, and assumes all other differentials and pricing relationships remain unchanged.
(b) 
Sour crude oil basket consists of the following crudes: ANS, Argus Sour Crude Index, Maya and Western Canadian Select. We assume 
approximately 50 percent of the crude processed at our refineries in 2025 will be sour crude.
(c) 
Sweet crude oil basket consists of the following crudes: Bakken, Brent, MEH, WTI-Cushing and WTI-Midland. We assume approximately 50 
percent of the crude processed at our refineries in 2025 will be sweet crude.
(d) 
This is consumption-based exposure for our Refining & Marketing segment and does not include the sales exposure for our Midstream 
segment. 
In addition to the market changes indicated by the crack spreads, the sour differential and the sweet differential, our Refining & 
Marketing margin is impacted by factors such as:
•
the selling prices realized for refined products;
•
the types of crude oil and other charge and blendstocks processed;
•
our refinery yields;
•
the cost of products purchased for resale; 
•
the impact of commodity derivative instruments used to hedge price risk; 
•
the potential impact of lower of cost or market adjustments to inventories in periods of declining prices;
•
the potential impact of LIFO charges due to changes in historic inventory levels; and
•
the cost of purchasing RINs in the open market to comply with RFS2 requirements.
Inventories are stated at the lower of cost or market. Costs of crude oil, refinery feedstocks and refined products are stated under 
the LIFO inventory costing method and aggregated on a consolidated basis for purposes of assessing if the cost basis of these 
inventories may have to be written down to market values. At December 31, 2024, market values for refined products exceed 
47

their cost basis and, therefore, there is no lower of cost or market inventory valuation reserve at the end of the year. Based on 
movements of refined product prices, future inventory valuation adjustments could have a negative effect to earnings. Such 
losses are subject to reversal in subsequent periods if prices recover.
Refining & Marketing segment adjusted EBITDA is also affected by changes in refining operating costs in addition to committed 
distribution costs. Changes in operating costs are primarily driven by the cost of energy used by our refineries, including 
purchased natural gas, and the level of maintenance costs. Distribution costs primarily include long-term agreements with MPLX, 
which as discussed below include minimum commitments to MPLX, and will negatively impact segment adjusted EBITDA in 
periods when throughput or sales are lower or refineries are idled.
We have various long-term, fee-based commercial agreements with MPLX. Under these agreements, MPLX, which is reported in 
our Midstream segment, provides transportation, storage, distribution and marketing services to our Refining & Marketing 
segment. Certain of these agreements include commitments for minimum quarterly throughput and distribution volumes of crude 
oil and refined products and minimum storage volumes of crude oil, refined products and other products. Certain other 
agreements include commitments to pay for 100 percent of available capacity for certain marine transportation and refining 
logistics assets. 
Midstream
Our Midstream segment gathers, transports, stores and distributes crude oil, refined products, including renewable diesel, and 
other hydrocarbon-based products, principally for our Refining & Marketing segment. Additionally, the segment markets refined 
products. The profitability of our pipeline transportation operations primarily depends on tariff rates and the volumes shipped 
through the pipelines. The profitability of our marine operations primarily depends on the quantity and availability of our vessels 
and barges. The profitability of our light product terminal operations primarily depends on the throughput volumes at these 
terminals. The profitability of our fuels distribution services primarily depends on the sales volumes of certain refined products. 
The profitability of our refining logistics operations depends on the quantity and availability of our refining logistics assets. A 
majority of the crude oil and refined product shipments on our pipelines and marine vessels and the refined product throughput at 
our terminals serve our Refining & Marketing segment and our refining logistics assets and fuels distribution services are used 
solely by our Refining & Marketing segment. As discussed above in the Refining & Marketing section, MPLX, which is reported in 
our Midstream segment, has various long-term, fee-based commercial agreements related to services provided to our Refining & 
Marketing segment. Under these agreements, MPLX has received various commitments of minimum throughput, storage and 
distribution volumes as well as commitments to pay for all available capacity of certain assets. The volume of crude oil that we 
transport is directly affected by the supply of, and refiner demand for, crude oil in the markets served directly by our crude oil 
pipelines, terminals and marine operations. Key factors in this supply and demand balance are the production levels of crude oil 
by producers in various regions or fields, the availability and cost of alternative modes of transportation, the volumes of crude oil 
processed at refineries and refinery and transportation system maintenance levels. The volume of refined products that we 
transport, store, distribute and market is directly affected by the production levels of, and user demand for, refined products in the 
markets served by our refined product pipelines and marine operations. In most of our markets, demand for gasoline and 
distillate peaks during the summer driving season, which extends from May through September of each year, and declines during 
the fall and winter months. As with crude oil, other transportation alternatives and system maintenance levels influence refined 
product movements. 
Our Midstream segment also gathers, processes and transports natural gas and transports, fractionates, stores and markets 
NGLs. NGL and natural gas prices are volatile and are impacted by changes in fundamental supply and demand, as well as 
market uncertainty, availability of NGL transportation and fractionation capacity and a variety of additional factors that are beyond 
our control. Our Midstream segment profitability is affected by prevailing commodity prices primarily as a result of processing or 
conditioning at our own or third-party processing plants, purchasing and selling or gathering and transporting volumes of natural 
gas at index-related prices and the cost of third-party transportation and fractionation services. To the extent that commodity 
prices influence the level of natural gas drilling by our producer customers, such prices also affect profitability.
Renewable Diesel
Our Renewable Diesel segment processes renewable feedstocks into renewable diesel, markets and distributes renewable 
diesel and includes joint ventures that produce soybean oil and renewable diesel.
Inventories are stated at the lower of cost or market. Costs of renewable feedstocks and renewable diesel are stated under the 
LIFO inventory costing method and aggregated on a consolidated basis, including traditional and renewable products, for 
purposes of assessing if the cost basis of these inventories may have to be written down to market values. At December 31, 
2024, market values for all refined product inventories exceed their cost basis and, therefore, there is no lower of cost or market 
inventory valuation reserve at the end of the year. Based on movements of renewable product prices, future inventory valuation 
adjustments could have a negative effect to earnings. Such losses are subject to reversal in subsequent periods if prices recover.
Our Renewable Diesel segment adjusted EBITDA is also affected by changes in operating costs, distribution costs, throughput 
and certain regulatory credits. 
48

RESULTS OF OPERATIONS
The following discussion includes comments and analysis relating to our results of operations for the years ended December 31, 
2024, 2023 and 2022. This discussion should be read in conjunction with Item 8. Financial Statements and Supplementary Data 
and is intended to provide investors with a reasonable basis for assessing our historical operations, but should not serve as the 
only criteria for predicting our future performance. 
Consolidated Results of Operations
(Millions of dollars)
2024
2023
2024 vs. 
2023 
Variance
2022
2023 vs. 
2022 
Variance
Revenues and other income:
Sales and other operating revenues
$ 138,864 
$ 148,379 
$ 
(9,515) 
$ 177,453 
$ (29,074) 
Income from equity method investments
 
1,048 
 
742 
 
306 
 
655 
 
87 
Net gain on disposal of assets
 
28 
 
217 
 
(189) 
 
1,061 
 
(844) 
Other income
 
472 
 
969 
 
(497) 
 
783 
 
186 
Total revenues and other income
 
140,412 
 
150,307 
 
(9,895) 
 
179,952 
 
(29,645) 
Costs and expenses:
Cost of revenues (excludes items below)
 
126,240 
 
128,566 
 
(2,326) 
 
151,671 
 
(23,105) 
Depreciation and amortization
 
3,337 
 
3,307 
 
30 
 
3,215 
 
92 
Selling, general and administrative expenses
 
3,221 
 
3,039 
 
182 
 
2,772 
 
267 
Other taxes
 
818 
 
881 
 
(63) 
 
825 
 
56 
Total costs and expenses
 
133,616 
 
135,793 
 
(2,177) 
 
158,483 
 
(22,690) 
Income from continuing operations
 
6,796 
 
14,514 
 
(7,718) 
 
21,469 
 
(6,955) 
Net interest and other financial costs
 
839 
 
525 
 
314 
 
1,000 
 
(475) 
Income from continuing operations before income 
taxes
 
5,957 
 
13,989 
 
(8,032) 
 
20,469 
 
(6,480) 
Provision for income taxes on continuing operations
 
890 
 
2,817 
 
(1,927) 
 
4,491 
 
(1,674) 
Income from continuing operations, net of tax
 
5,067 
 
11,172 
 
(6,105) 
 
15,978 
 
(4,806) 
Income from discontinued operations, net of tax
 
— 
 
— 
 
— 
 
72 
 
(72) 
Net income
 
5,067 
 
11,172 
 
(6,105) 
 
16,050 
 
(4,878) 
Less net income attributable to:
Redeemable noncontrolling interest
 
27 
 
94 
 
(67) 
 
88 
 
6 
Noncontrolling interests
 
1,595 
 
1,397 
 
198 
 
1,446 
 
(49) 
Net income attributable to MPC
$ 
3,445 
$ 
9,681 
$ 
(6,236) 
$ 
14,516 
$ 
(4,835) 
2024 Compared to 2023 
Net income attributable to MPC decreased $6.24 billion in 2024 compared to 2023, primarily due to lower Refining & Marketing 
margins, partially offset by a decreased provision for income taxes.
Total revenues and other income decreased $9.90 billion in 2024 compared to 2023 primarily due to:
•
decreased sales and other operating revenues of $9.52 billion primarily due to decreased average refined product sales 
prices of $0.24 per gallon, or 10 percent, partially offset by increased refined product sales volumes of 75 mbpd, or 2 
percent;
•
increased income from equity method investments of $306 million largely due to the gain on the sale of assets resulting 
from the Whistler Joint Venture Transaction and increased income from our Martinez Renewables joint venture;
•
decreased net gains on disposal of assets of $189 million mainly due to the $106 million gain on the sale of MPC’s 25 
percent interest in South Texas Gateway and $92 million associated with the remeasurement of MPLX’s existing equity 
investment in MarkWest Torñado GP, L.L.C. (“Torñado”), arising from the acquisition of the remaining 40 percent interest 
in 2023; and
•
decreased other income of $497 million largely due to lower income on RINs sales and lower insurance proceeds.
49

Total costs and expenses decreased $2.18 billion in 2024 compared to 2023 primarily due to:
•
decreased cost of revenues of $2.33 billion primarily due to lower crude oil costs and finished product purchases, 
partially offset by higher contract services and material and supply expenses related to increased turnaround activity;
•
increased selling, general and administrative expenses of $182 million primarily due to increased contract services 
costs of $96 million, office and rent expenses of $31 million and $30 million of expense related to decommissioning of 
non-operating assets; and
•
decreased other taxes of $63 million largely due to a property tax appeal settlement of $49 million related to retroactive 
tax assessments for prior periods.
Net interest and other financial costs increased $314 million largely due to decreased interest income of $154 million, primarily 
on short-term investments, increased pension non-service costs of $52 million and increased interest expense of $41 million due 
to higher MPLX borrowings. We capitalized interest of $57 million in 2024 and $60 million in 2023. See Item 8. Financial 
Statements and Supplementary Data – Note 11 for further details.
We recorded a combined federal, state and foreign income tax expense of $890 million for the year ended December 31, 2024, 
which was lower than the U.S. statutory rate primarily due to permanent tax benefits related to net income attributable to 
noncontrolling interests. We recorded a combined federal, state and foreign income tax expense of $2.82 billion for the year 
ended December 31, 2023, which was lower than the tax computed at the U.S. statutory rate primarily due to permanent tax 
benefits related to net income attributable to noncontrolling interests, partially offset by state taxes. See Item 8. Financial 
Statements and Supplementary Data – Note 12 for further details.
Net income attributable to noncontrolling interests increased $198 million mainly due to an increase in MPLX’s net income.
2023 Compared to 2022
Net income attributable to MPC decreased $4.84 billion in 2023 compared to 2022 primarily due to lower Refining & Marketing 
margins and net gain on the disposal of assets.
Total revenues and other income decreased $29.65 billion in 2023 compared to 2022 primarily due to:
•
decreased sales and other operating revenues of $29.07 billion primarily due to decreased average refined product 
sales prices of $0.53 per gallon, or 18 percent, partially offset by increased refined product sales volumes of 12 mbpd;
•
increased income from equity method investments of $87 million largely due to increased income from Midstream equity 
affiliates, partially offset by decreased income from our Martinez Renewables joint venture;
•
decreased net gains on disposal of assets of $844 million mainly due to gains of $549 million on the formation of the 
Martinez Renewables joint venture and $509 million on a lease reclassification in 2022, partially offset by the 
$106 million gain on the sale of MPC’s 25 percent interest in South Texas Gateway and $92 million associated with the 
remeasurement of MPLX’s existing equity investment in Torñado, arising from the acquisition of the remaining 40 
percent interest in 2023; and
•
increased other income of $186 million largely due to the receipt of insurance proceeds, partially offset by lower income 
on RIN sales.
Total costs and expenses decreased $22.69 billion in 2023 compared to 2022 primarily due to:
•
decreased cost of revenues of $23.11 billion primarily due to lower crude oil costs;
•
increased depreciation and amortization of $92 million mainly due to assets placed in service;
•
increased selling, general and administrative expenses of $267 million primarily due to increased employee 
compensation and related expenses, contract services and software maintenance costs; and
•
increased other taxes of $56 million largely due to the reinstated Petroleum Superfund Tax, which was effective January 
1, 2023. 
Net interest and other financial costs decreased $475 million largely due to increased interest income, primarily on short-term 
investments, and decreased pension non-service costs, partially offset by increased interest expense due to higher MPLX 
borrowings. We capitalized interest of $60 million in 2023 and $104 million in 2022. See Item 8. Financial Statements and 
Supplementary Data – Note 11 for further details.
We recorded a combined federal, state and foreign income tax expense of $2.82 billion for the year ended December 31, 2023, 
which was lower than the tax computed at the U.S. statutory rate primarily due to permanent tax benefits related to net income 
attributable to noncontrolling interests, partially offset by state taxes. We recorded a combined federal, state and foreign income 
tax expense of $4.49 billion for the year ended December 31, 2022, which was higher than the tax computed at the U.S. 
statutory rate primarily due to state taxes, partially offset by permanent tax benefits related to net income attributable to 
noncontrolling interests. See Item 8. Financial Statements and Supplementary Data – Note 12 for further details.
50

Net income attributable to noncontrolling interests decreased $49 million mainly due to MPLX’s redemption of its outstanding 
Series B preferred units on February 15, 2023.
Segment Results
We classify our business in the following reportable segments: Refining & Marketing, Midstream and Renewable Diesel. 
Segment adjusted EBITDA represents adjusted EBITDA attributable to the reportable segments. Amounts included in income 
before income taxes and excluded from segment adjusted EBITDA include: (i) depreciation and amortization; (ii) net interest and 
other financial costs; (iii) turnaround expenses and (iv) other adjustments as deemed necessary. These items are either: (i) 
believed to be non-recurring in nature; (ii) not believed to be allocable or controlled by the segment; or (iii) are not tied to the 
operational performance of the segment.
Our segment adjusted EBITDA for reportable segments was approximately $12.10 billion, $19.81 billion and $25.03 billion for the 
years ended December 31, 2024, 2023 and 2022, respectively. 
Refining & Marketing 
The following includes key financial and operating data for 2024, 2023 and 2022.
In millions
Refining & Marketing Sales and Other 
Operating Revenues
$131,763
$141,974
$171,596
2024
2023
2022
In millions
Refining & Marketing Segment
Adjusted EBITDA
$5,703
$13,705
$19,259
2024
2023
2022
mbpd
Refined Product Sales Volumes (a)
3,585
3,510
3,498
2024
2023
2022
Dollars per gallon
Average Refined Product Sales Prices
$2.23
$2.47
$3.00
2024
2023
2022
(a) 
Includes intersegment sales to Midstream and sales destined for export.
51

Refining & Marketing Operating Statistics
2024
2023
2022
Net refinery throughput (mbpd)
 
2,922 
 
2,903 
 
2,939 
Refining & Marketing margin, excluding LIFO inventory credit/
charge per barrel(a)(b)
$ 
15.91 
$ 
23.15 
$ 
28.04 
LIFO inventory credit (charge) per barrel
 
0.10 
 
(0.15) 
 
0.14 
Refining & Marketing margin per barrel(a)(b)
 
16.01 
 
23.00 
 
28.18 
Less:
Refining operating costs per barrel(c)
 
5.34 
 
5.31 
 
5.34 
Distribution costs per barrel
 
5.48 
 
5.33 
 
4.86 
LIFO inventory credit (charge) per barrel
 
0.10 
 
(0.15) 
 
0.14 
Other per barrel(d)
 
(0.24) 
 
(0.43) 
 
(0.11) 
Refining & Marketing adjusted EBITDA per barrel
 
5.33 
 
12.94 
 
17.95 
Less:
Refining planned turnaround costs per barrel
 
1.31 
 
1.11 
 
1.04 
LIFO inventory (credit) charge per barrel
 
(0.10) 
 
0.15 
 
(0.14) 
Depreciation and amortization per barrel
 
1.65 
 
1.72 
 
1.66 
Per barrel fees paid to MPLX included in distribution costs above
$ 
3.70 
$ 
3.62 
$ 
3.40 
(a) 
Sales revenue less cost of refinery inputs and purchased products, divided by net refinery throughput.
(b) 
See “Non-GAAP Measures” section for reconciliation and further information regarding this non-GAAP measure.
(c) 
Refining operating costs exclude planned turnaround and depreciation and amortization expense. 
(d) 
Includes income (loss) from equity method investments, net gain (loss) on disposal of assets and other income. 
52

The following table presents certain benchmark prices in our marketing areas and market indicators that we believe are helpful in 
understanding the results of our Refining & Marketing segment. The benchmark crack spreads below do not reflect the market 
cost of RINs necessary to meet EPA renewable volume obligations for attributable products under the Renewable Fuel Standard.
Benchmark spot prices (dollars per gallon)
2024
2023
2022
Chicago CBOB unleaded regular gasoline
$ 
2.14 
$ 
2.33 
$ 
2.87 
Chicago ultra-low sulfur diesel
 
2.32 
 
2.61 
 
3.43 
USGC CBOB unleaded regular gasoline
 
2.13 
 
2.34 
 
2.76 
USGC ultra-low sulfur diesel
 
2.36 
 
2.72 
 
3.46 
LA CARBOB
 
2.46 
 
2.81 
 
3.29 
LA CARB diesel
 
2.44 
 
2.91 
 
3.51 
Market Indicators (dollars per barrel)
WTI
$ 
75.76 
$ 
77.60 
$ 
94.33 
MEH
 
77.35 
 
79.08 
 
96.19 
ANS
 
80.31 
 
82.41 
 
98.98 
Crack Spreads
Mid-Continent WTI 3-2-1
$ 
14.09 
$ 
18.61 
$ 
26.93 
USGC MEH 3-2-1
 
11.75 
 
17.49 
 
22.17 
West Coast ANS 3-2-1
 
19.03 
 
30.11 
 
34.91 
Blended 3-2-1(a)
 
14.03 
 
20.46 
 
26.62 
Crude Oil Differentials
Sweet
$ 
(1.09) 
$ 
(0.48) 
$ 
0.21 
Sour
 
(4.45) 
 
(6.31) 
 
(6.81) 
(a) 
Beginning in the second quarter of 2024, the blended crack spreads are weighted 42 percent of the USGC crack spread, 40 percent of the 
Mid-Continent crack spread and 18 percent of the West Coast crack spread. The blended crack spreads for prior periods were weighted 40 
percent of the USGC crack spread, 40 percent of the Mid-Continent crack spread and 20 percent of the West Coast crack spread. These 
blends are based on MPC’s refining capacity by region in each period. 
2024 Compared to 2023 
Refining & Marketing segment revenues decreased $10.21 billion primarily due to decreased average refined product sales 
prices of $0.24 per gallon, partially offset by increased refined product sales volumes of 75 mbpd.
Refinery crude oil capacity utilization was 92 percent during 2024 and net refinery throughput increased 19 mbpd in 2024.
Refining & Marketing segment adjusted EBITDA decreased $8.0 billion primarily driven by decreased per barrel margins.
Refining & Marketing margin, excluding LIFO inventory adjustments, was $15.91 per barrel for 2024 compared to $23.15 per 
barrel for 2023. Refining & Marketing margin is affected by the market indicators shown earlier, which use spot market values 
and an estimated mix of crude purchases and product sales. Based on the market indicators and our crude oil throughput, we 
estimate a net negative impact of approximately $7 billion on Refining & Marketing margin, primarily due to lower crack spreads. 
Our reported Refining & Marketing margin differs from market indicators due to the mix of crudes purchased and their costs, the 
effects of market structure on our crude oil acquisition prices, RIN prices on the crack spread and other items like refinery yields 
and other feedstock variances, direct dealer fuel margin, and for 2024, a LIFO inventory credit of $106 million and for 2023, a 
LIFO inventory charge of $157 million. These factors had an estimated net negative impact on Refining & Marketing segment 
adjusted EBITDA of approximately $200 million in 2024 compared to 2023.
For the year ended December 31, 2024, refining operating costs, excluding depreciation and amortization, were $5.71 billion. 
This was an increase of $87 million, compared to the year ended December 31, 2023, primarily driven by higher expenses for 
projects conducted during turnaround activity, partially offset by a property tax appeal settlement related to retroactive tax 
assessments for prior periods.
Distribution costs, excluding depreciation and amortization, were $5.86 billion and $5.65 billion for 2024 and 2023, respectively, 
and include fees paid to MPLX of $3.95 billion and $3.84 billion for 2024 and 2023, respectively. On a per barrel basis, 
distribution costs, excluding depreciation and amortization, increased $0.15 primarily due to higher pipeline tariff rates and 
logistics fee escalations.
Refining planned turnaround costs increased $216 million, or $0.20 per barrel, due to the scope and timing of turnaround activity. 
53

Other income decreased by $0.19 per barrel mainly due to lower insurance proceeds in 2024.
We purchase RINs to satisfy a portion of our RFS2 compliance. Our expenses associated with purchased RINs were $1.07 
billion in 2024 and $2.07 billion in 2023 and are included in Refining & Marketing margin. The decrease in 2024 was primarily 
due to lower average RIN prices, increased RINs generated and acquired from our Martinez Renewables joint venture and lower 
RIN sale activity.
2023 Compared to 2022 
Refining & Marketing segment revenues decreased $29.62 billion primarily due to decreased average refined product sales 
prices of $0.53 per gallon, partially offset by increased refined product sales volumes of 12 mbpd.
Refinery crude oil capacity utilization was 92 percent during 2023 and net refinery throughput decreased 36 mbpd in 2023.
Refining & Marketing segment adjusted EBITDA decreased $5.55 billion primarily driven by decreased per barrel margin and 
throughput, increased distribution costs, excluding depreciation and amortization, partially offset by increased other income and 
decreased refining operating costs, excluding depreciation and amortization.
Refining & Marketing margin, excluding LIFO inventory adjustments, was $23.15 per barrel for 2023 compared to $28.04 per 
barrel for 2022. Refining & Marketing margin is affected by the market indicators shown earlier, which use spot market values 
and an estimated mix of crude purchases and product sales. Based on the market indicators and our crude oil throughput, we 
estimate a net negative impact of approximately $6 billion on Refining & Marketing margin, primarily due to lower crack spreads. 
Our reported Refining & Marketing margin differs from market indicators due to the mix of crudes purchased and their costs, the 
effects of market structure on our crude oil acquisition prices, RIN prices on the crack spread and other items like refinery yields 
and other feedstock variances, direct dealer fuel margin, and for 2023, a LIFO inventory charge of $157 million and for 2022, a 
LIFO inventory credit of $149 million. These factors had an estimated net positive impact on Refining & Marketing segment 
adjusted EBITDA of approximately $700 million in 2023 compared to 2022.
For the year ended December 31, 2023, refining operating costs, excluding depreciation and amortization, were $5.63 billion. 
This was a decrease of $101 million, compared to the year ended December 31, 2022, largely due to lower energy costs, 
partially offset by higher project expense. These expenses relate to projects that are regularly performed during refinery 
turnarounds, of which we had more in 2023, compared to 2022.
Distribution costs, excluding depreciation and amortization, were $5.65 billion and $5.21 billion for 2023 and 2022, respectively, 
and include fees paid to MPLX of $3.84 billion and $3.65 billion for 2023 and 2022, respectively. On a per barrel basis, 
distribution costs, excluding depreciation and amortization, increased $0.47 primarily due to higher pipeline tariff rates and 
logistics fee escalations.
Refining planned turnaround costs increased $62 million, or $0.07 per barrel, due to the scope and timing of turnaround activity. 
Depreciation and amortization per barrel increased by $0.06, primarily due to an increase in costs and a decrease in throughput.
Other income increased by $0.32 per barrel mainly due to the receipt of insurance proceeds in 2023.
We purchase RINs to satisfy a portion of our RFS2 compliance. Our expenses associated with purchased RINs were $2.07 
billion in 2023 and $2.40 billion in 2022, including benefits related to retroactive changes in renewable volume obligation 
requirements, and are included in Refining & Marketing margin. The decrease in 2023 was primarily due to increased RINs 
acquired with purchased product from third parties and through RINs generated and acquired from our Martinez Renewables 
joint venture in addition to lower average RINs prices.
54

Supplemental Refining & Marketing Statistics 
2024
2023
2022
Refining & Marketing Operating Statistics
Crude oil capacity utilization percent(a)
 92 
 92 
 96 
Refinery throughputs (mbpd):
Crude oil refined
 
2,714 
 
2,677 
 
2,761 
Other charge and blendstocks
 
208 
 
226 
 
178 
Net refinery throughput
 
2,922 
 
2,903 
 
2,939 
Sour crude oil throughput percent
 44 
 44 
 47 
Sweet crude oil throughput percent
 56 
 56 
 53 
Refined product yields (mbpd):
Gasoline
 
1,490 
 
1,526 
 
1,494 
Distillates
 
1,070 
 
1,037 
 
1,068 
Propane
 
67 
 
66 
 
70 
NGLs and petrochemicals
 
192 
 
182 
 
178 
Heavy fuel oil
 
59 
 
52 
 
73 
Asphalt
 
81 
 
80 
 
89 
Total
 
2,959 
 
2,943 
 
2,972 
Refined product export sales volumes (mbpd)(b)
 
370 
 
339 
 
315 
(a) 
Based on calendar-day capacity, which is an annual average that includes down time for planned maintenance and other normal operating 
activities.
(b) 
Represents fully loaded export cargoes for each time period. These sales volumes are included in the total sales volumes amounts.
Midstream
The following includes key financial and operating data for 2024, 2023 and 2022.
In millions
Midstream Sales and Other Operating 
Revenues
$10,994
$10,508
$10,590
$5,197
$4,911
$5,366
$5,797
$5,597
$5,224
Third Party
Intersegment - Refining & Marketing
2024
2023
2022
In millions
Midstream Segment Adjusted EBITDA
$6,544
$6,171
$5,772
2024
2023
2022
55

mbpd
Pipeline 
Throughputs (a)
5,874
5,895
5,743
2024
2023
2022
mbpd
Terminal 
Throughput 
3,131
3,130
3,022
2024
2023
2022
MMcf/d
Gathering System 
Throughput (b)
6,579
6,257
5,794
2024
2023
2022
MMcf/d
Natural Gas 
Processed (b)
9,663
8,971
8,448
2024
2023
2022
mbpd
C2 (Ethane) + NGLs 
Fractionated (b)
654
597
552
2024
2023
2022
(a) 
On owned common-carrier pipelines, excluding equity method investments.
(b) 
Includes amounts related to MPLX operated unconsolidated equity method investments on a 100 percent basis.
Benchmark Prices 
2024
2023
2022
Natural Gas NYMEX HH (per MMBtu)
$ 
2.41 
$ 
2.66 
$ 
6.52 
C2 + NGL Pricing (per gallon)(a)
$ 
0.84 
$ 
0.69 
$ 
1.03 
(a) 
For 2024, C2 + NGL pricing based on Mont Belvieu prices assuming an NGL barrel of approximately 10 percent ethane, 60 percent 
propane, five percent Iso-Butane, 15 percent normal butane and 10 percent natural gasoline. For 2023 and 2022, C2 + NGL pricing based 
on Mont Belvieu prices assuming an NGL barrel of approximately 35 percent ethane, 35 percent propane, six percent Iso-Butane, 12 
percent normal butane and 12 percent natural gasoline.
2024 Compared to 2023 
Midstream segment adjusted EBITDA increased $373 million. Sales and operating revenues increased $486 million mainly due 
to rate escalations, contributions from recently acquired assets and higher natural gas gathering and processing volumes. 
Income from equity method investments increased approximately $35 million. 
2023 Compared to 2022 
Midstream segment adjusted EBITDA increased $399 million. Sales and operating revenues decreased $82 million mainly due to 
lower NGL prices, partially offset by rate escalations and higher throughput. This decrease was more than offset by lower 
purchased product costs of $465 million, primarily due to lower NGL prices of $917 million, partially offset by higher volumes of 
$405 million, an increase of $47 million due to changes in the fair value of an embedded derivative in a natural gas purchase 
commitment and an increase in income from equity method investments of approximately $111 million. 
56

Renewable Diesel
The following includes key financial and operating data for 2024, 2023 and 2022.
In millions
Renewable Diesel Sales and Other 
Operating Revenues
$2,104
$1,664
$752
2024
2023
2022
In millions
Renewable Diesel Segment 
Adjusted EBITDA
$(150)
$(64)
$3
2024
2023
2022
Thousand gallons per day
Renewable Diesel Sales Volume (a)
1,134
715
469
2024
2023
2022
Thousand gallons per day
Renewable Diesel Produced Volume (b)
968
664
461
2024
2023
2022
(a) 
Includes intersegment sales to Refining & Marketing.
(b 
Includes Dickinson facility production and purchased product from our Martinez Renewables joint venture.
2024 Compared to 2023 
Renewable Diesel segment revenues increased $440 million primarily due to increased sales volume of 419 thousand gallons 
per day. Renewable Diesel segment adjusted EBITDA decreased $86 million as reduced production capacity in 2024 due to an 
event at the refinery in late 2023 resulted in lower throughput and impacted margins. The lower renewable diesel margins and an 
increased inventory LIFO charge of $43 million were partially offset by increased income from equity method investments of 
$129 million.
2023 Compared to 2022 
Renewable Diesel segment revenues increased $912 million primarily due to increased sales volume of 246 thousand gallons 
per day. Renewable Diesel segment adjusted EBITDA decreased $67 million mainly due to increased operating costs and 
distribution costs and decreased income from equity method investments of $39 million, partially offset by increased renewable 
diesel margins. Additionally, in 2023, the Martinez Renewables joint venture began production which was phased in at reduced 
rates in order to achieve nameplate capacity by the end of the year. However, operational issues impacted the ramp up and the 
site remained at reduced rates.
57

Corporate
(millions of dollars)
2024
2023
2022
Corporate(a)
$ 
(864) 
$ 
(837) 
$ 
(753) 
(a) 
Corporate costs consist primarily of MPC’s corporate administrative expenses and costs related to certain non-operating assets, except for 
corporate overhead expenses attributable to MPLX, which are included in the Midstream segment. Corporate costs include depreciation and 
amortization of $90 million, $100 million and $55 million for the years ended December 31, 2024, 2023 and 2022, respectively.
2024 Compared to 2023 
Corporate expenses increased $27 million in 2024 compared to 2023 largely due to increases in contract services of $35 million, 
office expenses of $24 million and compensation expense of $21 million, partially offset by a decrease in stock-based 
compensation of $52 million. 
2023 Compared to 2022 
Corporate expenses increased $84 million in 2023 compared to 2022 largely due to increases in stock-based compensation 
expense of $48 million, depreciation and amortization of $45 million, compensation expense of $31 million, contract services 
expense of $26 million and office expense of $22 million, partially offset by increased allocations of corporate costs to the 
segments of $75 million.
Items not Allocated to Segments
Our CODM evaluates the performance of our segments using segment adjusted EBITDA. Items identified in the table below are 
either believed to be non-recurring in nature or not believed to be allocable, controlled by the segment or are not tied to the 
operational performance of the segment. 
(millions of dollars)
2024
2023
2022
Items not allocated to segments:
Gain on sale of assets
$ 
151 
$ 
198 
$ 
1,058 
Renewable volume obligation requirements
 
— 
 
— 
 
238 
Litigation
 
— 
 
— 
 
27 
Total items not allocated to segments
$ 
151 
$ 
198 
$ 
1,323 
2024 Compared to 2023 
In 2024, items not allocated to segments includes a $151 million gain resulting from the Whistler Joint Venture Transaction. In 
2023, total items not allocated to segments includes the $106 million gain on the sale of MPC’s 25 percent interest in South 
Texas Gateway and the $92 million gain associated with the remeasurement of MPLX’s existing equity investment in Torñado 
arising from the acquisition of the remaining 40 percent interest.
2023 Compared to 2022 
Compared to 2023, as discussed above, in 2022, total items not allocated to segments primarily include the gain of $549 million 
on the formation of the Martinez Renewables joint venture, the gain of $509 million on a lease reclassification, and a $238 million 
benefit related to retroactive changes in renewable volume obligation requirements published by EPA for 2020 and 2021.
Non-GAAP Financial Measures
Management uses financial measures to evaluate our operating performance that are calculated and presented on the basis of 
methodologies other than in accordance with GAAP. The non-GAAP financial measures we use are as follows:
Refining & Marketing Margin
Refining & Marketing margin is defined as sales revenue less cost of refinery inputs and purchased products. We use and 
believe our investors use this non-GAAP financial measure to evaluate our Refining & Marketing segment’s operating and 
financial performance as it is the most comparable measure to the industry’s market reference product margins. This measure 
should not be considered a substitute for, or superior to, Refining & Marketing gross margin or other measures of financial 
performance prepared in accordance with GAAP, and our calculations thereof may not be comparable to similarly titled measures 
reported by other companies.
58

Reconciliation of Refining & Marketing segment adjusted EBITDA to Refining & Marketing gross margin and Refining & 
Marketing margin
(Millions of dollars)
2024
2023
2022
Refining & Marketing segment adjusted EBITDA
$ 
5,703 
$ 
13,705 
$ 
19,259 
Plus (Less):
Depreciation and amortization
 
(1,767) 
 
(1,822) 
 
(1,783) 
Refining planned turnaround costs
 
(1,397) 
 
(1,181) 
 
(1,119) 
LIFO inventory credit (charge)
 
106 
 
(157) 
 
149 
Selling, general and administrative expenses
 
2,472 
 
2,443 
 
2,235 
Income from equity method investments
 
(57) 
 
(66) 
 
(51) 
Net gain on disposal of assets
 
(1) 
 
(2) 
 
(37) 
Other income
 
(342) 
 
(870) 
 
(678) 
Refining & Marketing gross margin
 
4,717 
 
12,050 
 
17,975 
Plus (Less):
Operating expenses (excluding depreciation and amortization)
 
11,321 
 
10,833 
 
10,564 
Depreciation and amortization
 
1,767 
 
1,822 
 
1,783 
Gross margin excluded from and other income included in 
Refining & Marketing margin(a)
 
(425) 
 
(45) 
 
82 
Other taxes included in Refining & Marketing margin
 
(259) 
 
(288) 
 
(173) 
Refining & Marketing margin
 
17,121 
 
24,372 
 
30,231 
LIFO inventory (credit) charge
 
(106) 
 
157 
 
(149) 
Refining & Marketing margin, excluding LIFO inventory (credit) 
charge
$ 
17,015 
$ 
24,529 
$ 
30,082 
(a) 
Reflects the gross margin, excluding depreciation and amortization, of other related operations included in the Refining & Marketing 
segment and processing of credit card transactions on behalf of certain of our marketing customers, net of other income. 
Renewable Diesel Margin
Renewable Diesel margin is defined as sales revenue less cost of renewable inputs and purchased products. We use and 
believe our investors use this non-GAAP financial measure to evaluate our Renewable Diesel segment’s operating and financial 
performance. This measure should not be considered a substitute for, or superior to, Renewable Diesel gross margin or other 
measures of financial performance prepared in accordance with GAAP, and our calculation thereof may not be comparable to 
similarly titled measures reported by other companies.
59

Reconciliation of Renewable Diesel segment adjusted EBITDA to Renewable Diesel gross margin and Renewable Diesel 
margin
(Millions of dollars)
2024
2023
2022
Renewable Diesel segment adjusted EBITDA
$ 
(150) 
$ 
(64) 
$ 
3 
Plus (Less):
Depreciation and amortization
 
(75) 
 
(65) 
 
(67) 
Renewable Diesel JV depreciation and amortization(a)
 
(89) 
 
(65) 
 
(1) 
Renewable Diesel planned turnaround costs
 
(7) 
 
(20) 
 
(3) 
Renewable Diesel JV planned turnaround costs(a)
 
(9) 
 
(25) 
 
— 
LIFO inventory (charge) credit
 
55 
 
12 
 
(1) 
Selling, general and administrative expenses
 
59 
 
61 
 
59 
(Income) loss from equity method investments
 
(70) 
 
59 
 
20 
 Net gain on disposal of assets
 
— 
 
(1) 
 
— 
Other income
 
— 
 
(1) 
 
(8) 
Renewable Diesel gross margin
 
(286) 
 
(109) 
 
2 
Plus (Less):
Operating expenses (excluding depreciation and amortization)
 
312 
 
284 
 
119 
Depreciation and amortization
 
75 
 
65 
 
67 
Martinez JV depreciation and amortization
 
85 
 
64 
 
1 
Renewable Diesel margin
 
186 
$ 
304 
 
189 
LIFO inventory (credit) charge
 
(55) 
 
(12) 
 
1 
Renewable Diesel margin, excluding LIFO inventory (credit) charge
$ 
131 
$ 
292 
$ 
190 
(a) 
Represents MPC’s pro-rata share of expenses from joint ventures included within the Renewable Diesel segment. 
LIQUIDITY AND CAPITAL RESOURCES
Cash Flows
Our cash and cash equivalents balance was $3.21 billion at December 31, 2024, compared to $5.44 billion at December 31, 
2023. Net cash provided by (used in) operating activities, investing activities and financing activities for the past three years is 
presented in the following table.
(Millions of dollars)
2024
2023
2022
Net cash provided by (used in):
Operating activities - continuing operations
$ 
8,665 
$ 
14,117 
$ 
16,319 
Operating activities - discontinued operations
 
— 
 
— 
 
42 
Total operating activities
 
8,665 
 
14,117 
 
16,361 
Investing activities
 
1,534 
 
(3,095) 
 
623 
Financing activities
 
(12,434) 
 
(14,207) 
 
(13,647) 
Total increase (decrease) in cash
$ 
(2,235) 
$ 
(3,185) 
$ 
3,337 
Operating Activities
Continuing Operations
Net cash provided by operating activities from continuing operations decreased $5.45 billion in 2024 compared to 2023, primarily 
due to a decrease in operating results partially offset by a favorable change in working capital of $105 million. Net cash provided 
by operating activities from continuing operations decreased $2.20 billion in 2023 compared to 2022, primarily due to a decrease 
in operating results partially offset by a favorable change in working capital of $2.19 billion. The above changes in working capital 
exclude changes in short-term debt. 
For 2024, changes in working capital were a net $470 million source of cash, primarily due to the effect of decreases in energy 
commodity prices and volumes at the end of the year on working capital. Current receivables decreased primarily due to 
decreases in refined product and crude oil prices and crude oil volumes. Accounts payable increased primarily due to increased 
crude oil volumes and liability for a purchase of tax credits from a third party, partially offset by decreased crude oil prices. 
Inventories increased primarily due to increases in refined product and materials and supplies inventories, partially offset by a 
60

decrease in crude oil inventory. Additionally, working capital was favorably impacted by changes in income tax receivable and 
unfavorably impacted by changes in current liabilities and other current assets.
For 2023, changes in working capital were a net $365 million source of cash, primarily due to the effect of decreases in energy 
commodity prices and volumes at the end of the year on working capital. Current receivables decreased primarily due to 
decreases in crude oil volumes and prices. Accounts payable decreased primarily due to decreases in crude oil prices and 
volumes. Inventories increased primarily due to increases in refined product, crude oil and materials and supplies inventories. 
Additionally, working capital was favorably impacted by changes in income tax receivable and current liabilities and other current 
assets.
For 2022, changes in working capital were a net $1.82 billion use of cash, primarily due to the effect of increases in energy 
commodity prices and volumes at the end of the year on working capital. Current receivables increased primarily due to higher 
crude oil and refined product volumes and prices. Inventories increased primarily due to increases in crude oil, refined product 
and materials and supplies inventories. Accounts payable increased primarily due to increases in crude oil prices. Additionally, 
working capital was unfavorably impacted by changes in income tax receivable and favorably impacted by changes in current 
liabilities and other current assets.
Discontinued Operations
Net cash provided by operating activities from discontinued operations was $42 million in 2022 largely due to the settlement of 
working capital related to the Speedway sale, partially offset by the payment of state income tax liabilities. 
Investing Activities
Net cash provided by investing activities was $1.53 billion in 2024 and $623 million in 2022, compared to net cash used in 
investing activities of $3.10 billion in 2023.
•
In 2024, the change in net cash provided was primarily due to maturities and sales of short-term investments of $4.53 
billion and $3.30 billion, respectively, partially offset by purchases of short-term investments of $2.95 billion. The cash 
provided by maturities and sales of short-term investments was primarily used to fund our return of capital initiatives.
•
In 2023, the change in net cash used was primarily due to purchases of short-term investments of $8.62 billion, partially 
offset by maturities and sales of short-term investments of $5.05 billion and $2.08 billion, respectively. The cash 
provided by maturities and sales of short-term investments was primarily used to fund our return of capital initiatives 
announced as part of the Speedway sale.
•
In 2022, the change in net cash provided was primarily due to maturities and sales of short-term investments of $7.16 
billion and $1.30 billion, respectively, partially offset by purchases of short-term investments of $6.02 billion. The cash 
provided by maturities and sales of short-term investments was primarily used to fund our return of capital initiatives 
announced as part of the Speedway sale.
•
Cash used for additions to property, plant and equipment was $2.53 billion in 2024, compared to $1.89 billion in 2023 
and $2.42 billion in 2022. See the Capital Requirements section for additional information on our capital investment 
plan.
•
Cash used for acquisitions was $688 million in 2024 largely due to acquisitions in our Midstream segment. Cash used 
for acquisitions was $246 million in 2023 due to MPLX’s acquisition of the remaining interest in a gathering and 
processing joint venture for approximately $270 million, offset by cash acquired of $24 million. Cash used for 
acquisitions was $413 million in 2022 primarily due to the purchase of Marathon Tanker Holdings LLC (formerly known 
as Crowley Ocean Partners LLC) and its four subsidiaries from Marathon Coastal Holdings LLC (formerly known as 
Crowley Coastal Partners LLC) for approximately $485 million, which included $196 million to pay off the debt 
associated with the four tankers.
•
Cash used in net investments was $348 million in 2024 and $205 million in 2023, compared to cash provided by net 
investments of $110 million in 2022. In 2024, investments primarily included a return of capital of $134 million related to 
the Whistler Joint Venture more than offset by Midstream equity method investments, including a $92 million 
contribution made in March 2024 for the repayment of MPLX’s share of the Dakota Access joint venture’s debt due in 
2024. In 2023, investments primarily included the Martinez Renewables joint venture and the acquisition of a 49.9 
percent equity interest in LF Bioenergy for approximately $56 million, partially offset by cash received from the sale of 
MPC’s 25 percent interest in South Texas Gateway. Investments in 2022 include a $500 million cash distribution 
received from the Martinez Renewables joint venture at its formation, partially offset by increased contributions to equity 
method investments, which included the $60 million contribution to MPLX’s Bakken Pipeline joint venture to fund its 
share of a debt repayment by the joint venture. 
•
Cash provided by disposal of assets totaled $35 million, $36 million and $90 million in 2024, 2023 and 2022, 
respectively, primarily due to the sale of Corporate and Refining & Marketing assets in 2024 and the sale of Midstream 
assets in 2023 and 2022. 
61

The consolidated statements of cash flows exclude changes to the consolidated balance sheets that did not affect cash. A 
reconciliation of additions to property, plant and equipment to total capital expenditures and investments follows for each of the 
last three years.
(Millions of dollars)
2024
2023
2022
Additions to property, plant and equipment per consolidated 
statements of cash flows
$ 
2,533 
$ 
1,890 
$ 
2,420 
Increase (decrease) in capital accruals
 
34 
 
184 
 
(37) 
Total capital expenditures
 
2,567 
 
2,074 
 
2,383 
Investments in equity method investees
 
509 
 
480 
 
405 
Total capital expenditures and investments
$ 
3,076 
$ 
2,554 
$ 
2,788 
Financing Activities
Financing activities were a use of cash of $12.43 billion in 2024, $14.21 billion in 2023 and $13.65 billion in 2022. 
•
During 2024, MPLX issued $1.65 billion aggregate principal amount of 5.50 percent senior notes due June 2034 (the 
“2034 Senior Notes”) and used the proceeds to repay $1.15 billion aggregate principal amount of senior notes. MPC 
repaid $750 million aggregate principal amount of senior notes that matured September 2024.
•
During 2023, MPLX issued $1.6 billion of senior notes and used the proceeds to redeem $1.0 billion of senior notes and 
all of its outstanding Series B preferred units for $600 million.
•
During 2022, MPLX issued $2.5 billion of senior notes, redeemed $1.0 billion of senior notes and had net payments of 
$300 million under its revolving credit facility. 
•
Cash used in common stock repurchases totaled $9.19 billion in 2024, $11.57 billion in 2023 and $11.92 billion in 2022. 
See the “Capital Requirements” section for further discussion of our stock repurchases.
•
Cash used in dividend payments totaled $1.15 billion in 2024, $1.26 billion in 2023 and $1.28 billion in 2022. Dividends 
per share were $3.39 in 2024, $3.08 in 2023 and $2.49 in 2022. The decreases in 2024 and 2023 are primarily due to 
share repurchases, partially offset by increases in per share dividends.
•
Cash used in distributions to noncontrolling interests totaled $1.38 billion in 2024, $1.28 billion in 2023 and $1.21 billion 
in 2022 due to distributions to MPLX common and preferred public unitholders.
•
Cash used in repurchases of noncontrolling interests totaled $326 million in 2024 and $491 million in 2022 due to 
MPLX’s repurchases of its common units. There were no repurchases of noncontrolling interests in 2023. See the 
“Capital Requirements” section for further discussion of MPLX’s unit repurchases.
Derivative Instruments
See Item 7A. Quantitative and Qualitative Disclosures about Market Risk for a discussion of derivative instruments and 
associated market risk.
62

Capital Resources
MPC, Excluding MPLX
We control MPLX through our ownership of the general partner; however, the creditors of MPLX do not have recourse to MPC’s 
general credit through guarantees or other financial arrangements, except as noted. MPC has effectively guaranteed certain 
indebtedness of LOOP and LOCAP, in which MPLX holds an interest. Therefore, in the following table, we present the liquidity of 
MPC, excluding MPLX. MPLX liquidity is discussed in the following section.
Our liquidity, excluding MPLX, totaled $6.79 billion at December 31, 2024 consisting of:
December 31, 2024
(Millions of dollars)
Total 
Capacity
Outstanding 
Borrowings
Outstanding 
Letters 
of Credit
Available
Capacity
Bank revolving credit facility
$ 
5,000 
$ 
— 
$ 
1 
$ 
4,999 
Trade receivables facility(a)
 
100 
 
— 
 
— 
 
100 
Total
$ 
5,100 
$ 
— 
$ 
1 
$ 
5,099 
Cash and cash equivalents and short-term investments(b)
 
1,691 
Total liquidity
$ 
6,790 
(a) 
The committed borrowing and letter of credit issuance capacity under the trade receivables securitization facility is $100 million. In addition, 
the facility allows for the issuance of letters of credit in excess of the committed capacity at the discretion of the issuing banks. 
(b) 
Excludes $1.52 billion of MPLX cash and cash equivalents. 
On February 10, 2025, MPC issued $2.0 billion aggregate principal amount of senior notes in an underwritten public offering 
consisting of $1.1 billion aggregate principal amount of 5.150 percent senior notes due March 2030 and $900 million aggregate 
principal amount of 5.700 percent senior notes due March 2035. We intend to use the net proceeds from this offering to repay, 
redeem or otherwise retire our outstanding $1.250 billion aggregate principal amount of 4.700 percent senior notes due May 
2025 and for general corporate purposes.
Because of the alternatives available to us, including internally generated cash flow and access to capital markets and a 
commercial paper program, we believe that our short-term and long-term liquidity is adequate to fund not only our current 
operations, but also our near-term (less than twelve months) and long-term funding requirements, including capital spending 
programs, the repurchase of shares of our common stock, dividend payments, defined benefit plan contributions, repayment of 
debt maturities and other amounts that may ultimately be paid in connection with contingencies. 
We have a commercial paper program that allows us to have a maximum of $2.0 billion in commercial paper outstanding, with 
maturities up to 397 days from the date of issuance. We do not intend to have outstanding commercial paper borrowings in 
excess of available capacity under our bank revolving credit facility. At December 31, 2024, we had no borrowings outstanding 
under the commercial paper program.
MPC’s bank revolving credit facility and trade receivables facility contain representations and warranties, affirmative and negative 
covenants and restrictions, including financial covenants, and events of default that we consider usual and customary for 
agreements of a similar type and nature. As of December 31, 2024, we were in compliance with such covenants and restrictions. 
See Item 8. Financial Statements and Supplementary Data – Note 19 for further discussion of MPC’s revolving bank credit 
facility, trade receivables facility and related covenants and restrictions.
Our intention is to maintain an investment-grade credit profile. As of January 31, 2025, the credit ratings on our senior unsecured 
debt are as follows.
 
Company
Rating Agency
Rating
MPC
Moody’s
Baa2 (stable outlook)
Standard & Poor’s
BBB (stable outlook)
Fitch
BBB (stable outlook)
The ratings reflect the respective views of the rating agencies and should not be interpreted as a recommendation to buy, sell or 
hold our securities. Although it is our intention to maintain a credit profile that supports an investment-grade rating, there is no 
assurance that these ratings will continue for any given period of time. The ratings may be revised or withdrawn entirely by the 
rating agencies if, in their respective judgments, circumstances so warrant. A rating from one rating agency should be evaluated 
independently of ratings from other rating agencies.
The agreements governing MPC’s debt obligations do not contain credit rating triggers that would result in the acceleration of 
interest, principal or other payments in the event that our credit ratings are downgraded. However, any downgrades of our senior 
63

unsecured debt could increase the applicable interest rates, yields and other fees payable under such agreements and may limit 
our flexibility to obtain financing in the future, including to refinance existing indebtedness. In addition, a downgrade of our senior 
unsecured debt rating to below investment-grade levels could, under certain circumstances, impact our ability to purchase crude 
oil on an unsecured basis and could result in us having to post letters of credit under existing transportation services or other 
agreements.
See Item 8. Financial Statements and Supplementary Data – Note 19 for further discussion of our debt.
MPLX 
MPLX’s liquidity totaled $5.02 billion at December 31, 2024 consisting of:
December 31, 2024
(Millions of dollars)
Total 
Capacity
Outstanding 
Borrowings
Outstanding 
Letters 
of Credit
Available
Capacity
MPLX bank revolving credit facility
$ 
2,000 
$ 
— 
$ 
— 
$ 
2,000 
MPC intercompany loan agreement
 
1,500 
 
— 
 
— 
 
1,500 
Total
$ 
3,500 
$ 
— 
$ 
— 
$ 
3,500 
Cash and cash equivalents
 
1,519 
Total liquidity
$ 
5,019 
On May 20, 2024, MPLX issued $1.65 billion aggregate principal amount of 5.50 percent senior notes due June 2034 (the “2034 
Senior Notes”) in an underwritten public offering. On December 1, 2024, MPLX used $1,150 million of the net proceeds from the 
issuance of the 2034 Senior Notes to repay all of (i) MPLX's outstanding $1,149 million aggregate principal amount of 4.875 
percent senior notes due December 2024 and (ii) MarkWest's outstanding $1 million aggregate principal amount of 4.875 percent 
senior notes due December 2024. On February 18, 2025, MPLX used the remaining net proceeds from the issuance of the 2034 
Senior Notes to repay all of MPLX's outstanding $500 million aggregate principal amount of 4.000 percent senior notes due 
February 2025.
MPLX’s bank revolving credit facility contains representations and warranties, covenants and restrictions, including financial 
covenants, and events of default that we consider usual and customary for agreements of a similar type and nature. As of 
December 31, 2024, we were in compliance with such covenants and restrictions. See Item 8. Financial Statements and 
Supplementary Data – Note 19 for further discussion of MPLX’s bank revolving credit facility and related covenants and 
restrictions.
Our intention is to maintain an investment-grade credit profile for MPLX. As of January 31, 2025, the credit ratings on MPLX’s 
senior unsecured debt are as follows.
 
Company
Rating Agency
Rating
MPLX
Moody’s
Baa2 (stable outlook)
Standard & Poor’s
BBB (stable outlook)
Fitch
BBB (stable outlook)
The ratings reflect the respective views of the rating agencies and should not be interpreted as a recommendation to buy, sell or 
hold MPLX securities. Although it is our intention to maintain a credit profile that supports an investment-grade rating for MPLX, 
there is no assurance that these ratings will continue for any given period of time. The ratings may be revised or withdrawn 
entirely by the rating agencies if, in their respective judgments, circumstances so warrant. A rating from one rating agency should 
be evaluated independently of ratings from other rating agencies.
The agreements governing MPLX’s debt obligations do not contain credit rating triggers that would result in the acceleration of 
interest, principal or other payments in the event that MPLX credit ratings are downgraded. However, any downgrades of MPLX 
senior unsecured debt to below investment grade ratings could increase the applicable interest rates, yields and other fees 
payable under such agreements. In addition, a downgrade of MPLX senior unsecured debt ratings to below investment-grade 
levels may limit MPLX’s ability to obtain future financing, including to refinance existing indebtedness. 
See Item 8. Financial Statements and Supplementary Data – Note 19 for further discussion of MPLX’s debt.
Capital Requirements
Capital Spending
MPC’s capital investment outlook for 2025 totals approximately $1.25 billion for capital projects and investments, excluding 
capitalized interest, potential acquisitions, if any, and MPLX’s capital investment plan. MPC’s 2025 capital investment outlook 
64

includes all of the planned capital spending for Refining & Marketing, Renewable Diesel and Corporate as well as a portion of the 
planned capital investments for Midstream. The remainder of the planned capital spending for Midstream reflects the capital 
investment plan for MPLX. We continuously evaluate our capital plan and make changes as conditions warrant. The 2025 capital 
investment outlook for MPC and MPLX and capital expenditures and investments for each of the last three years are 
summarized by segment below.
(Millions of dollars)
2025 Outlook
2024
2023
2022
Capital expenditures and investments:(a)
MPC, excluding MPLX
Refining & Marketing
$ 
1,200 
$ 
1,445 
$ 
998 
$ 
1,275 
Midstream - Other
 
— 
 
7 
 
2 
 
8 
Renewable Diesel
 
5 
 
8 
 
313 
 
233 
Corporate and Other(b)
 
45 
 
63 
 
83 
 
108 
Total MPC, excluding MPLX
$ 
1,250 
$ 
1,523 
$ 
1,396 
$ 
1,624 
Midstream - MPLX(c)
$ 
2,000 
$ 
1,497 
$ 
1,103 
$ 
1,061 
(a) 
Capital expenditures include changes in capital accruals.
(b) 
Excludes capitalized interest of $56 million, $55 million and $103 million for 2024, 2023 and 2022, respectively. The 2025 capital investment 
plan excludes capitalized interest.
(c) 
The 2025 capital investment outlook for Midstream - MPLX excludes $242 million of capital expenditures, which is expected to be incurred 
primarily by MPC and other MPLX customers on MPLX’s behalf. This reimbursable capital will be included in the 2025 MPC Midstream 
capital expenditures.
Refining & Marketing
The Refining & Marketing segment’s forecasted 2025 capital spending and investments is approximately $1.20 billion. This 
amount includes approximately $100 million of value enhancing capital for multi-year low carbon initiatives. At our Los Angeles 
refinery, we are advancing improvements to enhance the competitiveness of the refinery by improving reliability and lowering 
costs. The improvements focus on integrating and modernizing utility systems and increasing energy efficiency, with the added 
benefit of addressing upcoming regulation mandating further reductions in emissions. The improvements are expected to be 
completed by the end of 2025. There is also $750 million of value enhancing capital, which includes a multi-year project to 
upgrade high sulfur distillate to ULSD and maximize distillate volume expansion at our Galveston Bay refinery, which is expected 
to be completed by the end of 2027, a project at our Robinson refinery to shift yields to higher value products including the 
flexibility to maximize jet production to meet growing demand, which is expected to be completed by the end of 2026, and other 
traditional projects that will enhance the yields of our refineries, improve energy efficiency, and lower our costs as well as 
investments in our branded marketing footprint. Maintenance capital is expected to be approximately $350 million, which is 
essential to maintain the safety, integrity and reliability of our assets.
Major capital projects completed over the last three years have focused on refinery optimization, production of higher value 
products, increased capacity to upgrade residual fuel oil and expanded export capacity. We also focused on projects such as the 
STAR project at our Galveston Bay refinery and projects expected to reduce future operating costs.
Midstream - MPLX
MPLX’s capital investment outlook totals approximately $2.0 billion, net of reimbursements and excluding capitalized interest and 
potential acquisitions, if any, and includes approximately $1.7 billion of growth capital and $300 million of maintenance capital. 
MPLX’s growth plans are focused on expanding its Permian to Gulf Coast integrated value chain, progressing long-haul pipeline 
value enhancing projects to support producer activity, and investing in new gas processing plants in the Marcellus and Permian. 
The remainder of its capital plan targets the expansion of crude gathering pipelines in the Permian and Bakken basins, and the 
debottlenecking of existing assets to meet customer demand. 
Major capital projects over the last three years included investments for the development of natural gas and natural gas liquids 
infrastructure to support MPLX’s producer customers, primarily in the Marcellus, Utica and Permian regions and development of 
various crude oil and refined petroleum products infrastructure projects.
Renewable Diesel
The Renewable Diesel segment’s forecasted 2025 capital spending and investments is approximately $5 million. Major projects 
over the last three years included investments in the Martinez Renewables joint venture and the Green Bison Soy Processing 
joint venture.
65

Corporate and Other
The 2025 capital forecast includes approximately $45 million to support corporate and other activities. Major projects over the 
last three years included upgrades to information technology systems. 
Share Repurchases
From January 1, 2012 through December 31, 2024, our board of directors approved $60.05 billion in total share repurchase 
authorizations and we have repurchased a total of $52.30 billion of our common stock. As of December 31, 2024, MPC had 
$7.75 billion remaining under its share repurchase authorizations, which reflects the repurchase of 203,173 common shares for 
$28 million that were transacted in the fourth quarter of 2024 and settled in the first quarter of 2025. The table below summarizes 
our total share repurchases for the last three years. See Item 8. Financial Statements and Supplementary Data – Note 9 for 
further discussion of the share repurchase plans.
(In millions of dollars, except per share data)
2024
2023
2022
Number of shares repurchased
 
53 
 
89 
 
131 
Cash paid for shares repurchased
$ 
9,077 
$ 
11,572 
$ 
11,922 
Average cost per share
$ 
171.68 
$ 
131.27 
$ 
91.20 
We may utilize various methods to effect the repurchases, which could include open market repurchases, negotiated block 
transactions, tender offers, accelerated share repurchases or open market solicitations for shares, some of which may be 
effected through Rule 10b5-1 plans. The timing and amount of future repurchases, if any, will depend upon several factors, 
including market and business conditions, and such repurchases may be suspended or discontinued at any time.
MPLX Unit Repurchases
The table below summarizes MPLX’s total unit repurchases for the last three years. 
(In millions of dollars, except per unit data)
2024
2023
2022
Number of common units repurchased
 
8 
 
— 
 
15 
Cash paid for common units repurchased
$ 
326 
$ 
— 
$ 
491 
Average cost per unit
$ 
43.04 
$ 
— 
$ 
31.96 
As of December 31, 2024, MPLX had approximately $520 million remaining under its unit repurchase authorization. The 
repurchase authorization has no expiration date.
MPLX may utilize various methods to effect the repurchases, which could include open market repurchases, negotiated block 
transactions, accelerated unit repurchases, tender offers or open market solicitations for units, some of which may be effected 
through Rule 10b5-1 plans. The timing and amount of future repurchases, if any, will depend upon several factors, including 
market and business conditions, and such repurchases may be discontinued at any time.
See Item 8. Financial Statements and Supplementary Data – Note 5 for further discussion of the MPLX unit repurchase program.
Material Cash Commitments 
Contractual Obligations
We have purchase commitments primarily consisting of obligations to purchase and transport crude oil and feedstocks used in 
our refining operations. As of December 31, 2024, we had purchase obligations for crude oil, NGLs and renewable feedstocks of 
$17.18 billion, with $14.50 billion payable within 12 months, and crude oil transportation obligations of $7.98 billion, with $892 
million payable within 12 months. These contracts include variable price arrangements. For purposes of this disclosure, we have 
estimated prices to be paid primarily based on futures curves for the commodities to the extent available. Our contractual 
obligations do not include our contractual obligations to MPLX under various fee-based commercial agreements as these 
transactions are eliminated in the consolidated financial statements.
At December 31, 2024, we had non-cancelable obligations to acquire property, plant and equipment of $260 million, which is all 
payable within 12 months. 
At December 31, 2024, we had an aggregate principal amount of outstanding senior notes of $26.90 billion, with $2.95 billion 
payable within 12 months, and interest on the debt of $16.49 billion, with $1.17 billion payable within 12 months. See Item 8. 
Financial Statements and Supplementary Data – Note 19 for additional information on our debt. We intend to repay the short-
term maturities with existing cash on hand and/or with the proceeds of new long-term debt, depending on, among other things, 
market conditions.
66

Our other contractual obligations primarily consist of pension and post-retirement obligations, finance and operating leases and 
environmental credits liabilities, for which additional information is included in Item 8. Financial Statements and Supplementary 
Data – Notes 24, 26 and 22, respectively.
Other Cash Commitments
On January 24, 2025, we announced our board of directors approved a $0.91 per share dividend, payable March 10, 2025 to 
shareholders of record at the close of business on February 19, 2025.
We may, from time to time, repurchase our senior notes and preferred units in the open market, in tender offers, in privately-
negotiated transactions or otherwise in such volumes, at such prices and upon such other terms as we deem appropriate.
TRANSACTIONS WITH RELATED PARTIES
See Item 8. Financial Statements and Supplementary Data – Note 7 for discussion of activity with related parties.
ENVIRONMENTAL MATTERS AND COMPLIANCE COSTS 
We have incurred and may continue to incur substantial capital, operating and maintenance, and remediation expenditures as a 
result of environmental laws and regulations. If these expenditures, as with all costs, are not ultimately reflected in the prices of 
our products and services, our operating results will be adversely affected. We believe that substantially all of our competitors 
must comply with similar environmental laws and regulations. However, the specific impact on each competitor may vary 
depending on a number of factors, including the age and location of its operating facilities, marketing areas, production 
processes and whether it is also engaged in the petrochemical business or the marine transportation of crude oil and refined 
products.
Legislation and regulations pertaining to fuel specifications, climate change and GHG emissions have the potential to materially 
adversely impact our business, financial condition, results of operations and cash flows, including costs of compliance and 
permitting delays. The extent and magnitude of these adverse impacts cannot be reliably or accurately estimated at this time 
because specific regulatory and legislative requirements have not been finalized and uncertainty exists with respect to the 
measures being considered, the costs and the time frames for compliance, and our ability to pass compliance costs on to our 
customers.
Our environmental expenditures, including non-regulatory expenditures, for each of the last three years were:
(Millions of dollars)
2024
2023
2022
Capital
$ 
543 
$ 
236 
$ 
167 
Compliance:(a)
Operating and maintenance
 
1,390 
 
1,191 
 
987 
Remediation(b)
 
56 
 
49 
 
72 
Total
$ 
1,989 
$ 
1,476 
$ 
1,226 
(a) 
Based on the American Petroleum Institute’s definition of environmental expenditures.
(b) 
These amounts include spending charged against remediation reserves, where permissible, but exclude non-cash provisions recorded for 
environmental remediation.
We accrue for environmental remediation activities when the responsibility to remediate is probable and the amount of 
associated costs can be reasonably estimated. As environmental remediation matters proceed toward ultimate resolution or as 
additional remediation obligations arise, charges in excess of those previously accrued may be required.
New or expanded environmental requirements, which could increase our environmental costs, may arise in the future. It is not 
possible to predict all of the ultimate costs of compliance, including remediation costs that may be incurred and penalties that 
may be imposed.
Our environmental capital expenditures accounted for 22 percent, 12 percent and 7 percent of capital expenditures for 2024, 
2023 and 2022, respectively, excluding acquisitions. Our environmental capital expenditures are expected to be approximately 
$298 million, or 9 percent, of total planned capital expenditures in 2025. Actual expenditures may vary as the number and scope 
of environmental projects are revised as a result of improved technology or changes in regulatory requirements and could 
increase if additional projects are identified or additional requirements are imposed. 
For more information on environmental regulations that impact us, or could impact us, see Item 1. Business – Regulatory Matters 
and Item 1A. Risk Factors.
67

CRITICAL ACCOUNTING ESTIMATES 
The preparation of financial statements in accordance with GAAP requires us to make estimates and assumptions that affect the 
reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities as of the date of the consolidated 
financial statements and the reported amounts of revenues and expenses during the respective reporting periods. Accounting 
estimates are considered to be critical if (1) the nature of the estimates and assumptions is material due to the levels of 
subjectivity and judgment necessary to account for highly uncertain matters or the susceptibility of such matters to change; and 
(2) the impact of the estimates and assumptions on financial condition or operating performance is material. Actual results could 
differ from the estimates and assumptions used. See Item 8. Financial Statements and Supplementary Data – Note 2 for 
additional information on these policies and estimates, as well as a discussion of additional accounting policies and estimates.
Fair Value Estimates
Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between 
market participants at the measurement date. There are three approaches for measuring the fair value of assets and liabilities: 
the market approach, the income approach and the cost approach, each of which includes multiple valuation techniques. The 
market approach uses prices and other relevant information generated by market transactions involving identical or comparable 
assets or liabilities. The income approach uses valuation techniques to measure fair value by converting future amounts, such as 
cash flows or earnings, into a single present value amount using current market expectations about those future amounts. The 
cost approach is based on the amount that would currently be required to replace the service capacity of an asset. This is often 
referred to as current replacement cost. The cost approach assumes that the fair value would not exceed what it would cost a 
market participant to acquire or construct a substitute asset of comparable utility, adjusted for obsolescence.
The fair value accounting standards do not prescribe which valuation technique should be used when measuring fair value and 
do not prioritize among the techniques. These standards establish a fair value hierarchy that prioritizes the inputs used in 
applying the various valuation techniques. Inputs broadly refer to the assumptions that market participants use to make pricing 
decisions, including assumptions about risk. Level 1 inputs are given the highest priority in the fair value hierarchy while Level 3 
inputs are given the lowest priority. The three levels of the fair value hierarchy are as follows:
•
Level 1 – Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets as of 
the measurement date. Active markets are those in which transactions for the asset or liability occur in sufficient 
frequency and volume to provide pricing information on an ongoing basis.
•
Level 2 – Observable market-based inputs or unobservable inputs that are corroborated by market data. These are 
inputs other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as 
of the measurement date.
•
Level 3 – Unobservable inputs that are not corroborated by market data and may be used with internally developed 
methodologies that result in management’s best estimate of fair value.
Valuation techniques that maximize the use of observable inputs are favored. Assets and liabilities are classified in their entirety 
based on the lowest priority level of input that is significant to the fair value measurement. The assessment of the significance of 
a particular input to the fair value measurement requires judgment and may affect the placement of assets and liabilities within 
the levels of the fair value hierarchy. We use an income or market approach for recurring fair value measurements and endeavor 
to use the best information available. See Item 8. Financial Statements and Supplementary Data – Note 17 for disclosures 
regarding our fair value measurements.
Significant uses of fair value measurements include:
•
assessment of impairment of long-lived assets, intangible assets, goodwill and equity method investments;
•
recorded values for assets acquired and liabilities assumed in connection with acquisitions; and
•
recorded values of derivative instruments.
Impairment Assessments of Long-Lived Assets, Intangible Assets, Goodwill and Equity Method Investments
Fair value calculated for the purpose of testing our long-lived assets, intangible assets, goodwill and equity method investments 
for impairment is estimated using the expected present value of future cash flows method and comparative market prices when 
appropriate. Significant judgment is involved in performing these fair value estimates since the results are based on forecasted 
financial information prepared using significant assumptions including:
•
Future operating performance. Our estimates of future operating performance are based on our analysis of various 
supply and demand factors, which include, among other things, industry-wide capacity, our planned utilization rate, end-
user demand, capital expenditures and economic conditions, as well as commodity prices. Such estimates are 
consistent with those used in our planning and capital investment reviews.
•
Future volumes. Our estimates of future refinery, pipeline throughput and natural gas and natural gas liquid processing 
volumes are based on internal forecasts prepared by our Refining & Marketing and Midstream segments operations 
personnel. Assumptions about our customers’ drilling activity are inherently subjective and contingent upon a number of 
variable factors (including future or expected crude oil and natural gas pricing considerations), many of which are 
68

difficult to forecast. Management considers these volume forecasts and other factors when developing our forecasted 
cash flows. 
•
Discount rate commensurate with the risks involved. We apply a discount rate to our cash flows based on a variety of 
factors, including market and economic conditions, operational risk, regulatory risk and political risk. This discount rate 
is also compared to recent observable market transactions, if possible. A higher discount rate decreases the net present 
value of cash flows.
•
Future capital requirements. These are based on authorized spending and internal forecasts.
Assumptions about the macroeconomic environment are inherently subjective and difficult to forecast. We base our fair value 
estimates on projected financial information which we believe to be reasonable. However, actual results may differ from these 
projections.
The need to test for impairment can be based on several indicators, including a significant reduction in prices of or demand for 
products produced, a weakened outlook for profitability, a significant reduction in pipeline throughput volumes, a significant 
reduction in natural gas or natural gas liquids processed, a significant reduction in refining margins, other changes to contracts or 
changes in the regulatory environment. The following sections detail our critical accounting estimates related to impairment 
assessments for long-lived assets, goodwill and equity method investments.
Long-lived Asset Impairment Assessments
Long-lived assets used in operations are assessed for impairment whenever changes in facts and circumstances indicate that 
the carrying value of the assets may not be recoverable based on the expected undiscounted future cash flow of an asset group. 
For purposes of impairment evaluation, long-lived assets must be grouped at the lowest level for which independent cash flows 
can be identified, which generally is the refinery and associated distribution system level for Refining & Marketing segment 
assets, and the plant level or pipeline system level for Midstream segment assets. If the sum of the undiscounted estimated 
pretax cash flows is less than the carrying value of an asset group, fair value is calculated, and the carrying value is written down 
to the calculated fair value. 
Goodwill Impairment Assessments
Unlike long-lived assets, goodwill is subject to annual, or more frequent if necessary, impairment testing at the reporting unit 
level. A goodwill impairment loss is measured as the amount by which a reporting unit's carrying value exceeds its fair value, 
without exceeding the recorded amount of goodwill.
At December 31, 2024, MPC had four reporting units with goodwill totaling approximately $8.24 billion. The majority of this 
balance is comprised of the Midstream reporting units, including $1.1 billion for the MPLX Crude Gathering reporting unit and 
$6.6 billion for the MPLX Transportation & Storage reporting unit. For the annual impairment assessment as of November 30, 
2024, management performed only a qualitative assessment for three reporting units as we determined it was more likely than 
not that the fair value of the reporting units exceeded the carrying value. Significant assumptions used to estimate the reporting 
units’ fair value under a qualitative approach included estimates of future cash flows and market information for comparable 
assets. A quantitative assessment was performed for the MPLX Crude Gathering reporting unit, which resulted in the fair value of 
the reporting unit exceeding its carrying value by greater than 10 percent. The fair value of the reporting unit was determined 
based on applying both a discounted cash flow method (i.e., income approach) as well as a market approach. An increase of one 
percentage point to the discount rate used to estimate the fair value of the reporting unit would not have resulted in a goodwill 
impairment charge as of November 30, 2024. Significant assumptions that were used to estimate the Crude Gathering reporting 
unit’s fair values under the discounted cash flow method included management’s best estimates of the discount rate, as well as 
estimates of future cash flows, which are impacted primarily by producers’ development plans, which impact the reporting unit’s 
future volumes and capital requirements. If estimates for future cash flows were to decline, the overall reporting units’ fair values 
would decrease, resulting in potential goodwill impairment charges. 
Fair value determinations require considerable judgment and are sensitive to changes in underlying assumptions and factors. As 
a result, there can be no assurance that the estimates and assumptions made for purposes of the impairment tests will prove to 
be an accurate prediction of the future.
Equity Method Investment Impairment Assessment
Equity method investments are assessed for impairment whenever factors indicate an other than temporary loss in value. 
Factors providing evidence of such a loss include the fair value of an investment that is less than its carrying value, absence of 
an ability to recover the carrying value or the investee’s inability to generate income sufficient to justify our carrying value. At 
December 31, 2024, we had $6.86 billion of investments in equity method investments recorded on our consolidated balance 
sheet. 
See Item 8. Financial Statements and Supplementary Data – Note 14 for additional information on our equity method 
investments. See Item 8. Financial Statements and Supplementary Data – Note 16 for additional information on our goodwill and 
intangibles, including a table summarizing our recorded goodwill by segment. 
69

Derivatives
We record all derivative instruments at fair value. Substantially all of our commodity derivatives are cleared through exchanges 
which provide active trading information for identical derivatives and do not require any assumptions in arriving at fair value. Fair 
value estimation for all our derivative instruments is discussed in Item 8. Financial Statements and Supplementary Data – Note 
17. Additional information about derivatives and their valuation may be found in Item 7A. Quantitative and Qualitative Disclosures 
about Market Risk.
Variable Interest Entities
We evaluate all legal entities in which we hold an ownership or other pecuniary interest to determine if the entity is a VIE. Our 
interests in a VIE are referred to as variable interests. Variable interests can be contractual, ownership or other pecuniary 
interests in an entity that change with changes in the fair value of the VIE’s assets. When we conclude that we hold an interest in 
a VIE we must determine if we are the entity’s primary beneficiary. A primary beneficiary is deemed to have a controlling financial 
interest in a VIE. This controlling financial interest is evidenced by both (a) the power to direct the activities of the VIE that most 
significantly impact the VIE’s economic performance and (b) the obligation to absorb losses that could potentially be significant to 
the VIE or the right to receive benefits that could potentially be significant to the VIE. We consolidate any VIE when we determine 
that we are the primary beneficiary. We must disclose the nature of any interests in a VIE that is not consolidated. 
Significant judgment is exercised in determining that a legal entity is a VIE and in evaluating our interest in a VIE. We use 
primarily a qualitative analysis to determine if an entity is a VIE. We evaluate the entity’s need for continuing financial support; 
the equity holder’s lack of a controlling financial interest; and/or if an equity holder’s voting interests are disproportionate to its 
obligation to absorb expected losses or receive residual returns. We evaluate our interests in a VIE to determine whether we are 
the primary beneficiary. We use a primarily qualitative analysis to determine if we are deemed to have a controlling financial 
interest in the VIE, either on a standalone basis or as part of a related party group. We continually monitor our interests in legal 
entities for changes in the design or activities of an entity and changes in our interests, including our status as the primary 
beneficiary to determine if the changes require us to revise our previous conclusions. 
Changes in the design or nature of the activities of a VIE, or our involvement with a VIE, may require us to reconsider our 
conclusions on the entity’s status as a VIE and/or our status as the primary beneficiary. Such reconsideration requires significant 
judgment and understanding of the organization. This could result in the deconsolidation or consolidation of the affected 
subsidiary, which would have a significant impact on our financial statements. 
Variable Interest Entities are discussed in Item 8. Financial Statements and Supplementary Data – Note 6.
Pension and Other Postretirement Benefit Obligations
Accounting for pension and other postretirement benefit obligations involves numerous assumptions, the most significant of 
which relate to the following:
•
the discount rate for measuring the present value of future plan obligations;
•
the expected long-term return on plan assets;
•
the rate of future increases in compensation levels; 
•
health care cost projections; and
•
the mortality table used in determining future plan obligations.
We utilize the work of third-party actuaries to assist in the measurement of these obligations. We have selected different discount 
rates for each of our pension plans and retiree health and welfare based on the projected benefit payment patterns of each 
individual plan. The selected rates are compared to various similar bond indexes for reasonableness. In determining the 
assumed discount rates, we use our third-party actuaries’ discount rate models. These models calculate an equivalent single 
discount rate for the projected benefit plan cash flows using yield curves derived from Aa or higher corporate bond yields. The 
yield curves represent a series of annualized individual spot discount rates from 0.5 to 99 years. The bonds used have an 
average rating of Aa or higher from a recognized rating agency and generally only non-callable bonds are included. Outlier bonds 
that have a yield to maturity that deviate significantly from the average yield within each maturity grouping are not included. Each 
issue is required to have at least $300 million par value outstanding.
Of the assumptions used to measure the year-end obligations and estimated annual net periodic benefit cost, the discount rate 
has the most significant effect on the periodic benefit cost reported for the plans. Decreasing the discount rates of 5.65 percent 
for our pension plans and 5.50 percent for our other postretirement benefit plans by 0.25 percent would increase pension 
obligations and other postretirement benefit plan obligations by $73 million and $16 million, respectively, and would increase 
defined benefit pension expense and other postretirement benefit plan expense by $10 million and less than $1 million, 
respectively.
The long-term asset rate of return assumption considers the asset mix of the plans (currently targeted at approximately 50 
percent equity securities and 50 percent fixed income securities for the primary funded pension plan), past performance and 
other factors. Certain components of the asset mix are modeled with various assumptions regarding inflation and returns. In 
addition, our long-term asset rate of return assumption is compared to those of other companies and to historical returns for 
70

reasonableness. We used the 6.80 percent long-term rate of return to determine our 2024 defined benefit pension expense. After 
evaluating activity in the capital markets, along with the current and projected plan investments, we increased the asset rate of 
return for our primary plan to 7.10 percent effective for 2025. Decreasing the 7.10 percent asset rate of return assumption by 
0.25 percentage points would increase our defined benefit pension expense by $5 million.
Compensation change assumptions are based on historical experience, anticipated future management actions and 
demographics of the benefit plans.
Health care cost trend assumptions are developed based on historical cost data, the near-term outlook and an assessment of 
likely long-term trends.
We utilized the 2021 mortality tables from the U.S. Society of Actuaries.
Item 8. Financial Statements and Supplementary Data – Note 24 includes detailed information about the assumptions used to 
calculate the components of our annual defined benefit pension and other postretirement plan expense, as well as the 
obligations and accumulated other comprehensive loss reported on the year-end balance sheets.
ACCOUNTING STANDARDS NOT YET ADOPTED
Refer to Item 8. Financial Statements and Supplementary Data – Note 3 to our audited consolidated financial statements for 
recently issued financial accounting pronouncements.
Item 7A. Quantitative and Qualitative Disclosures about Market Risk
GENERAL
We are exposed to market risks related to the volatility of crude oil and refined petroleum products, ethanol, renewable 
feedstock, renewable products, NGLs, and natural gas prices. We employ various strategies, including the use of commodity 
derivative instruments, to hedge the risks related to these price fluctuations. We are also exposed to market risks related to 
changes in interest rates and foreign currency exchange rates. As of December 31, 2024, we did not have any financial 
derivative instruments to hedge the risks related to interest rate or foreign currency exchange rate fluctuations; however, we have 
used them in the past, and we continually monitor the market and our exposure and may enter into these agreements again in 
the future. We are at risk for changes in fair value of all of our derivative instruments; however, such risk should be mitigated by 
price or rate changes related to the underlying commodity or financial transaction.
We believe that our use of derivative instruments, along with our risk assessment procedures and internal controls, does not 
expose us to material adverse consequences. While the use of derivative instruments could materially affect our results of 
operations in particular quarterly or annual periods, we believe that the use of these instruments will not have a material adverse 
effect on our financial position or liquidity.
See Item 8. Financial Statements and Supplementary Data – Notes 17 and 18 for more information about the fair value 
measurement of our derivatives, as well as the amounts recorded in our consolidated balance sheets and statements of income. 
We do not designate any of our commodity derivative instruments as hedges for accounting purposes.
Commodity Price Risk
Refining & Marketing
Our strategy is to obtain competitive prices for our products and allow operating results to reflect market price movements 
dictated by supply and demand. We use a variety of commodity derivative instruments, including futures, swaps and options, as 
part of an overall program to hedge commodity price risk. We also do a limited amount of trading not directly related to our 
physical transactions. 
We use derivative instruments related to the acquisition of crude oil and ethanol blended with refined petroleum products to 
hedge price risk associated with market volatility between the time we purchase the product and when we use it in the refinery 
production process or it is blended. In addition, we may use commodity derivative instruments on fixed price contracts for the 
sale of refined products to hedge risk by converting the refined product sales to market-based prices. The majority of these 
derivatives are exchange-traded contracts, but we may also enter into over-the-counter swaps, options and over-the-counter 
options. We closely monitor and hedge our exposure to market risk on a daily basis in accordance with policies approved by our 
board of directors. Our positions are monitored daily by a risk control group to ensure compliance with our stated risk 
management policy.
71

Midstream
NGL and natural gas prices are volatile and are impacted by changes in fundamental supply and demand, as well as market 
uncertainty, availability of NGL transportation and fractionation capacity and a variety of additional factors that are beyond 
MPLX’s control. MPLX may at times use a variety of commodity derivative instruments, including futures and options, as part of 
an overall program to economically hedge commodity price 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. To the extent that 
commodity prices influence the level of drilling by MPLX producer customers, such prices also indirectly affect profitability. MPLX 
may enter into derivative contracts, which are primarily swaps traded on the OTC market as well as fixed price forward contracts. 
MPLX’s risk management policy does not allow it to enter into speculative positions with its derivative contracts. Execution of 
MPLX’s hedge strategy and the continuous monitoring of commodity markets and its open derivative positions are carried out by 
its hedge committee, comprised of members of senior management.
To mitigate MPLX’s cash flow exposure to fluctuations in the price of NGLs, it may use NGL derivative swap contracts. A small 
portion of its NGL price exposure may be managed by using crude oil contracts. To mitigate MPLX’s cash flow exposure to 
fluctuations in the price of natural gas, it may use natural gas derivative swap contracts, taking into account the partial offset of 
its long and short natural gas positions resulting from normal operating activities.
MPLX would be exposed to additional commodity risk in certain situations such as if producers under-deliver or over-deliver 
products or if processing facilities are operated in different recovery modes. In the event that MPLX has derivative positions in 
excess of the product delivered or expected to be delivered, the excess derivative positions may be terminated. 
MPLX management conducts a standard credit review on counterparties to derivative contracts, and it has provided the 
counterparties with a guaranty as credit support for its obligations if requested. MPLX uses standardized agreements that allow 
for offset of certain positive and negative exposures in the event of default or other terminating events, including bankruptcy.
Renewable Diesel
MPC is exposed to commodity price risk related to the acquisition of renewable feedstocks and the sale of renewable diesel. To 
manage these risks, we employ hedging strategies in accordance with our objectives and company policies. We are subject to 
price volatility mainly in agricultural commodities markets in relation to renewable feedstock used in the production of renewable 
diesel. To mitigate this risk, we use futures contracts traded on commodity exchanges as hedging instruments. We are also 
exposed to market volatility between the time the renewable product is produced and when it is sold. We employ hedging 
strategies with exchange traded instruments in commodity markets to minimize the impact of price volatility during this time.
While these hedging activities are intended to reduce price volatility, they do not completely eliminate commodity price risk. We 
continually monitor commodity price exposures and adjust our hedging as necessary to align with market conditions, regulatory 
requirements, internal price risk management policies, and overall business objectives.
Open Derivative Positions and Sensitivity Analysis
The following table includes the composition of net losses/gains on our commodity derivative positions for the years ended 
December 31, 2024 and 2023, respectively.
(Millions of dollars)
2024
2023
Realized gain (loss) on settled derivative positions
$ 
(94) 
$ 
8 
Unrealized gain (loss) on open net derivative positions
 
3 
 
(14) 
Net loss
$ 
(91) 
$ 
(6) 
See Item 8. Financial Statements and Supplementary Data – Note 18 for additional information on our open derivative positions 
at December 31, 2024.
Sensitivity analysis of the incremental effects on income from operations (“IFO”) of hypothetical 10 percent and 25 percent 
increases and decreases in commodity prices for open commodity derivative instruments as of December 31, 2024 is provided in 
the following table.
72

 
Change in IFO from a
Hypothetical Price
Increase of
Change in IFO from a
Hypothetical Price
Decrease of
(Millions of dollars)
10%
25%
10%
25%
As of December 31, 2024
Crude
$ 
22 
$ 
54 
$ 
(22) 
$ 
(54) 
Refined products
 
(29) 
 
(72) 
 
29 
 
72 
Blending products
 
(2) 
 
(5) 
 
2 
 
5 
Soybean oil
 
(8) 
 
(19) 
 
8 
 
19 
We remain at risk for possible changes in the market value of commodity derivative instruments; however, such risk should be 
mitigated by price changes in the underlying physical commodity. Effects of these offsets are not reflected in the above sensitivity 
analysis.
We evaluate our portfolio of commodity derivative instruments on an ongoing basis and add or revise strategies in anticipation of 
changes in market conditions and in risk profiles. Changes to the portfolio after December 31, 2024 would cause future IFO 
effects to differ from those presented above.
Interest Rate Risk
Our use of fixed or variable-rate debt directly exposes us to interest rate risk. Fixed rate debt, such as our senior notes, exposes 
us to changes in the fair value of our debt due to changes in market interest rates. Fixed rate debt also exposes us to the risk 
that we may need to refinance maturing debt with new debt at higher rates or that our current fixed rate debt may be higher than 
the current market. Variable-rate debt, such as borrowings under our revolving credit facilities, exposes us to short-term changes 
in market rates that impact our interest expense. See Item 8. Financial Statements and Supplementary Data – Note 19 for 
additional information on our debt.
Sensitivity analysis of the effect of a hypothetical 100-basis-point change in interest rates on long-term debt, including the portion 
classified as current and excluding finance leases, as of December 31, 2024 is provided in the following table. The fair value of 
cash and cash equivalents, receivables, accounts payable and accrued interest approximate carrying value and, in addition to 
short-term investments which are recorded at fair value, are relatively insensitive to changes in interest rates due to the short-
term maturity of the instruments. Accordingly, these instruments are excluded from the table.
(Millions of dollars)
Fair
Value(a)
Change in
Fair Value(b)
Change in Net Income 
for the Year ended 
December 31, 2024(c)
Long-term debt
Fixed-rate
$ 
25,133 
$ 
1,885 
n/a
Variable-rate
$ 
— 
$ 
— 
$ 
— 
(a) 
Fair value was based on market prices, where available, or current borrowing rates for financings with similar terms and maturities.
(b) 
Assumes a 100-basis point decrease in the weighted average yield-to-maturity at December 31, 2024.
(c) 
Assumes a 100-basis-point change in interest rates. The change in net income was based on the weighted average balance of debt 
outstanding for the year ended December 31, 2024.
See Item 8. Financial Statements and Supplementary Data – Note 17 for additional information on the fair value of our debt.
Foreign Currency Exchange Rate Risk 
We are exposed to exchange rate fluctuations related to our foreign operations in Canada and Mexico. We did not use 
derivatives to hedge our market risk exposure to these foreign exchange rate fluctuations in 2024. 
Counterparty Risk 
MPLX is subject to risk of loss resulting from nonpayment by its customers to whom it provides services, leases assets, or sells 
natural gas or NGLs. MPLX believes that certain contracts where it sells NGLs and acts as its producer customers’ agent would 
allow it to pass those losses through to its customers, thus reducing its risk, when it is selling NGLs and acting as its producer 
customers’ agent. Its credit exposure related to these customers is represented by the value of its trade receivables or lease 
receivables. Where exposed to credit risk, MPLX analyzes the customer’s financial condition prior to entering into a transaction 
or agreement, establishes credit terms and monitors the appropriateness of these terms on an ongoing basis. In the event of a 
customer default, MPLX may sustain a loss and its cash receipts could be negatively impacted.
We are subject to risk of loss resulting from nonpayment or nonperformance by counterparties to our derivative contracts. Our 
credit exposure related to commodity derivative instruments is represented by the fair value of contracts with a net positive fair 
73

value at the reporting date. Outstanding instruments expose us to credit loss in the event of nonperformance by the 
counterparties to the agreements. Should the creditworthiness of one or more of our counterparties decline, our ability to mitigate 
nonperformance risk is limited to a counterparty agreeing to either a voluntary termination and subsequent cash settlement or a 
novation of the derivative contract to a third party. In the event of a counterparty default, we may sustain a loss and our cash 
receipts could be negatively impacted. 
74

Item 8. Financial Statements and Supplementary Data
INDEX
 
Page
Management’s Responsibilities for Financial Statements
76
Management’s Report on Internal Control over Financial Reporting
76
Report of Independent Registered Public Accounting Firm (PCAOB ID 238)
77
Audited Consolidated Financial Statements:
Consolidated Statements of Income
79
Consolidated Statements of Comprehensive Income
80
Consolidated Balance Sheets
81
Consolidated Statements of Cash Flows
82
Consolidated Statements of Equity and Redeemable Noncontrolling Interest
84
Notes to Consolidated Financial Statements
85
  1. Description of Business and Basis of Presentation
85
  2. Summary of Principal Accounting Policies
85
  3. Accounting Standards and Disclosure Rules
90
  4. Short-Term Investments
91
  5. Master Limited Partnership
91
  6. Variable Interest Entities
92
  7. Related Party Transactions
93
  8. Earnings Per Share
93
  9. Equity
94
10. Segment Information
95
11. Net Interest and Other Financial Costs
98
12. Income Taxes
99
13. Inventories
101
14. Equity Method Investments
101
15. Property, Plant and Equipment (PP&E)
105
16. Goodwill and Intangibles
105
17. Fair Value Measurements
106
18. Derivatives
108
19. Debt
109
20. Revenue
113
21. Supplemental Cash Flow Information
114
22. Other Current Liabilities
114
23. Accumulated Other Comprehensive Income (Loss)
115
24. Pension and Other Postretirement Benefits
115
25. Share-Based Compensation
121
26. Leases
123
27. Commitments and Contingencies
126
28. Subsequent Event
128
Unless otherwise stated or the context otherwise indicates, all references in this Annual Report on Form 10-K to “MPC,” “us,” 
“our,” “we” or the “Company” mean Marathon Petroleum Corporation and its consolidated subsidiaries.
75

Management’s Responsibilities for Financial Statements
The accompanying consolidated financial statements of Marathon Petroleum Corporation and its subsidiaries (“MPC”) are the 
responsibility of management and have been prepared in conformity with accounting principles generally accepted in the United 
States of America. They necessarily include some amounts that are based on best judgments and estimates. The financial 
information displayed in other sections of this Annual Report on Form 10-K is consistent with these consolidated financial 
statements.
MPC seeks to assure the objectivity and integrity of its financial records by careful selection of its managers, by organizational 
arrangements that provide an appropriate division of responsibility and by communications programs aimed at assuring that its 
policies and methods are understood throughout the organization.
The board of directors pursues its oversight role in the area of financial reporting and internal control over financial reporting 
through its Audit Committee. This committee, composed solely of independent directors, regularly meets (jointly and separately) 
with the independent registered public accounting firm, management and internal auditors to monitor the proper discharge by 
each of their responsibilities relative to internal accounting controls and the consolidated financial statements.
 
/s/ Maryann T. Mannen
/s/ John J. Quaid
/s/ Erin M. Brzezinski
Maryann T. Mannen
President and Chief Executive Officer
John J. Quaid
Executive Vice President and 
Chief Financial Officer
Erin M. Brzezinski
Vice President and Controller
Management’s Report on Internal Control over Financial Reporting
MPC’s management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined 
in Rule 13a-15(f) under the Securities Exchange Act of 1934, as amended). An evaluation of the design and effectiveness of our 
internal control over financial reporting, based on the framework in Internal Control – Integrated Framework (2013) issued by the 
Committee of Sponsoring Organizations of the Treadway Commission, was conducted under the supervision and with the 
participation of management, including our chief executive officer and chief financial officer. Based on the results of this 
evaluation, MPC’s management concluded that its internal control over financial reporting was effective as of December 31, 
2024.
The effectiveness of MPC’s internal control over financial reporting as of December 31, 2024 has been audited by 
PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which is included 
herein.
/s/ Maryann T. Mannen
/s/ John J. Quaid
Maryann T. Mannen
President and Chief Executive Officer
John J. Quaid
Executive Vice President and 
Chief Financial Officer
76

Report of Independent Registered Public Accounting Firm
To the Board of Directors and Stockholders of Marathon Petroleum Corporation
Opinions on the Financial Statements and Internal Control over Financial Reporting
We have audited the accompanying consolidated balance sheets of Marathon Petroleum Corporation and its subsidiaries (the 
"Company") as of December 31, 2024 and 2023, and the related consolidated statements of income, of comprehensive income, 
of equity and redeemable noncontrolling interest and of cash flows for each of the three years in the period ended December 31, 
2024, including the related notes (collectively referred to as the "consolidated financial statements"). We also have audited the 
Company's internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control - 
Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position 
of the Company as of December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the three 
years in the period ended December 31, 2024 in conformity with accounting principles generally accepted in the United States of 
America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting 
as of December 31, 2024, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.
Basis for Opinions
The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control 
over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the 
accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express opinions on 
the Company’s consolidated financial statements and on the Company's internal control over financial reporting based on our 
audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) 
(PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws 
and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the 
audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, 
whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material 
respects.
Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement 
of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. 
Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated 
financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by 
management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control 
over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a 
material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the 
assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We 
believe that our audits provide a reasonable basis for our opinions.
Definition and Limitations of Internal Control over Financial Reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the 
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that 
(i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions 
of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit 
preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and 
expenditures of the company are being made only in accordance with authorizations of management and directors of the 
company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or 
disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, 
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate 
because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
Critical Audit Matters
The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial 
statements that was communicated or required to be communicated to the audit committee and that (i) relates to accounts or 
disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or 
complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated 
financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate 
opinion on the critical audit matter or on the accounts or disclosures to which it relates.
77

Goodwill Impairment Test - Crude Gathering Reporting Unit
As described in Note 16 to the consolidated financial statements and as disclosed by management, the Company’s consolidated 
goodwill balance was $8.2 billion as of December 31, 2024, which includes, within the Midstream segment, the goodwill 
associated with MPLX’s Crude Gathering reporting unit of $1.1 billion. Management annually evaluates goodwill for impairment 
as of November 30, as well as whenever events or changes in circumstances indicate it is more likely than not that the fair value 
of a reporting unit with goodwill is less than its carrying amount. The fair value of the MPLX Crude Gathering reporting unit was 
determined based on applying both a discounted cash flow method (i.e. income approach) as well as a market approach. 
Significant assumptions that were used to estimate the reporting unit’s fair value under the discounted cash flow method included 
management’s best estimates of the discount rate, as well as estimates of future cash flows, which are impacted primarily by 
producer development plans, which impact the reporting unit’s future volumes and capital requirements.
The principal considerations for our determination that performing procedures relating to the goodwill impairment test of the 
Crude Gathering reporting unit of the Midstream segment is a critical audit matter are (i) the significant judgment by management 
when determining the fair value of the reporting unit; and (ii) the high degree of auditor judgment, subjectivity, and effort in 
performing procedures and evaluating audit evidence relating to management’s significant assumption related to future volumes.
Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall 
opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to 
management’s goodwill impairment test, including controls over the determination of the fair value of the Crude Gathering 
reporting unit. These procedures also included, among others (i) testing management’s process for determining the fair value of 
the reporting unit; (ii) evaluating the appropriateness of the income and market approaches used; (iii) testing the completeness 
and accuracy of underlying data used by management in the approaches; and (iv) evaluating the reasonableness of the 
significant assumption related to future volumes. Evaluating the assumption related to future volumes involved (i) considering 
whether the assumption used was reasonable considering past performance of the reporting unit, producers’ historical and future 
production volumes, and industry outlook reports; and (ii) considering whether the assumption was consistent with evidence 
obtained in other areas of the audit.
/s/ PricewaterhouseCoopers LLP
Toledo, Ohio 
February 27, 2025
We have served as the Company’s auditor since 2010.
78

Marathon Petroleum Corporation
Consolidated Statements of Income
 
(In millions, except per share data)
2024
2023
2022
Revenues and other income:
Sales and other operating revenues
$ 
138,864 
$ 
148,379 
$ 
177,453 
Income from equity method investments
 
1,048 
 
742 
 
655 
Net gain on disposal of assets
 
28 
 
217 
 
1,061 
Other income
 
472 
 
969 
 
783 
Total revenues and other income
 
140,412 
 
150,307 
 
179,952 
Costs and expenses:
Cost of revenues (excludes items below)
 
126,240 
 
128,566 
 
151,671 
Depreciation and amortization
 
3,337 
 
3,307 
 
3,215 
Selling, general and administrative expenses
 
3,221 
 
3,039 
 
2,772 
Other taxes
 
818 
 
881 
 
825 
Total costs and expenses
 
133,616 
 
135,793 
 
158,483 
Income from continuing operations
 
6,796 
 
14,514 
 
21,469 
Net interest and other financial costs
 
839 
 
525 
 
1,000 
Income from continuing operations before income taxes
 
5,957 
 
13,989 
 
20,469 
Provision for income taxes on continuing operations
 
890 
 
2,817 
 
4,491 
Income from continuing operations, net of tax
 
5,067 
 
11,172 
 
15,978 
Income from discontinued operations, net of tax
 
— 
 
— 
 
72 
Net income
 
5,067 
 
11,172 
 
16,050 
Less net income attributable to:
Redeemable noncontrolling interest
 
27 
 
94 
 
88 
Noncontrolling interests
 
1,595 
 
1,397 
 
1,446 
Net income attributable to MPC
$ 
3,445 
$ 
9,681 
$ 
14,516 
Per share data (See Note 8)
Basic:
Continuing operations
$ 
10.11 
$ 
23.73 
$ 
28.17 
Discontinued operations
 
— 
 
— 
 
0.14 
Net income per share
$ 
10.11 
$ 
23.73 
$ 
28.31 
Weighted average shares outstanding
 
340 
 
407 
 
512 
Diluted:
Continuing operations
$ 
10.08 
$ 
23.63 
$ 
27.98 
Discontinued operations
 
— 
 
— 
 
0.14 
Net income per share
$ 
10.08 
$ 
23.63 
$ 
28.12 
Weighted average shares outstanding
 
341 
 
409 
 
516 
The accompanying notes are an integral part of these consolidated financial statements.
79

Marathon Petroleum Corporation
Consolidated Statements of Comprehensive Income
 
(Millions of dollars)
2024
2023
2022
Net income
$ 
5,067 
$ 
11,172 
$ 
16,050 
Defined benefit plans:
Actuarial changes, net of tax of $20, $(24) and $36, respectively
 
60 
 
(85) 
 
122 
Prior service, net of tax of $(14), $(18) and $(15), respectively
 
(41) 
 
(49) 
 
(52) 
Other, net of tax of $1, $— and $—, respectively
 
(2) 
 
1 
 
(1) 
Other comprehensive income (loss)
 
17 
 
(133) 
 
69 
Comprehensive income
 
5,084 
 
11,039 
 
16,119 
Less comprehensive income attributable to:
Redeemable noncontrolling interest
 
27 
 
94 
 
88 
Noncontrolling interests
 
1,595 
 
1,397 
 
1,446 
Comprehensive income attributable to MPC
$ 
3,462 
$ 
9,548 
$ 
14,585 
The accompanying notes are an integral part of these consolidated financial statements.
80

Marathon Petroleum Corporation
Consolidated Balance Sheets
 
 
December 31,
(Millions of dollars, except share data)
2024
2023
Assets
Cash and cash equivalents
$ 
3,210 
$ 
5,443 
Short-term investments
 
— 
 
4,781 
Receivables, less allowance for doubtful accounts of $73 and $44, respectively
 
11,145 
 
12,187 
Inventories
 
9,568 
 
9,317 
Other current assets
 
524 
 
403 
Total current assets
 
24,447 
 
32,131 
Equity method investments
 
6,857 
 
6,260 
Property, plant and equipment, net
 
35,028 
 
35,112 
Goodwill
 
8,244 
 
8,244 
Right of use assets
 
1,300 
 
1,233 
Other noncurrent assets
 
2,982 
 
3,007 
Total assets
$ 
78,858 
$ 
85,987 
Liabilities
Accounts payable
$ 
13,906 
$ 
13,761 
Payroll and benefits payable
 
1,096 
 
1,115 
Accrued taxes
 
1,204 
 
1,221 
Debt due within one year
 
3,049 
 
1,954 
Operating lease liabilities
 
417 
 
454 
Other current liabilities
 
1,155 
 
1,645 
Total current liabilities
 
20,827 
 
20,150 
Long-term debt
 
24,432 
 
25,329 
Deferred income taxes
 
5,771 
 
5,834 
Defined benefit postretirement plan obligations
 
1,157 
 
1,102 
Long-term operating lease liabilities
 
860 
 
764 
Deferred credits and other liabilities
 
1,305 
 
1,409 
Total liabilities
 
54,352 
 
54,588 
Commitments and contingencies (see Note 27)
Redeemable noncontrolling interest
 
203 
 
895 
Equity
Preferred stock, no shares issued and outstanding (par value $0.01 per share, 30 million 
shares authorized)
 
— 
 
— 
Common stock:
Issued – 994 million and 993 million shares (par value $0.01 per share, 2 billion shares 
authorized)
 
10 
 
10 
Held in treasury, at cost – 678 million and 625 million shares
 
(52,623) 
 
(43,502) 
Additional paid-in capital
 
33,624 
 
33,465 
Retained earnings
 
36,848 
 
34,562 
Accumulated other comprehensive loss
 
(114) 
 
(131) 
Total MPC stockholders’ equity
 
17,745 
 
24,404 
Noncontrolling interests
 
6,558 
 
6,100 
Total equity
 
24,303 
 
30,504 
Total liabilities, redeemable noncontrolling interest and equity
$ 
78,858 
$ 
85,987 
The accompanying notes are an integral part of these consolidated financial statements.
81

Marathon Petroleum Corporation
Consolidated Statements of Cash Flows
Operating activities:
Net income
$ 
5,067 
$ 
11,172 
$ 
16,050 
Adjustments to reconcile net income to net cash provided by operating 
activities:
Amortization of deferred financing costs and debt discount
 
(31) 
 
(78) 
 
50 
Depreciation and amortization
 
3,337 
 
3,307 
 
3,215 
Pension and other postretirement benefits, net
 
59 
 
(191) 
 
172 
Deferred income taxes
 
(124) 
 
(28) 
 
290 
Net gain on disposal of assets
 
(28) 
 
(217) 
 
(1,061) 
Income from equity method investments
 
(1,048) 
 
(742) 
 
(655) 
Distributions from equity method investments
 
1,215 
 
941 
 
772 
Income from discontinued operations
 
— 
 
— 
 
(72) 
Changes in the fair value of derivative instruments
 
71 
 
70 
 
(147) 
Changes in:
Current receivables
 
1,117 
 
2,109 
 
(2,858) 
Inventories
 
(270) 
 
(489) 
 
(787) 
Current liabilities and other current assets
 
(438) 
 
(1,318) 
 
1,972 
Right of use assets and operating lease liabilities, net
 
(10) 
 
(7) 
 
— 
All other, net
 
(252) 
 
(412) 
 
(622) 
Cash provided by operating activities - continuing operations
 
8,665 
 
14,117 
 
16,319 
Cash provided by operating activities - discontinued operations
 
— 
 
— 
 
42 
Net cash provided by operating activities
 
8,665 
 
14,117 
 
16,361 
Investing activities:
Additions to property, plant and equipment
 
(2,533) 
 
(1,890) 
 
(2,420) 
Acquisitions, net of cash acquired
 
(688) 
 
(246) 
 
(413) 
Disposal of assets
 
35 
 
36 
 
90 
Investments – acquisitions and contributions
 
(509) 
 
(480) 
 
(405) 
 – redemptions, repayments, return of capital and sales 
proceeds
 
161 
 
275 
 
515 
Purchases of short-term investments
 
(2,949) 
 
(8,622) 
 
(6,023) 
Sales of short-term investments
 
3,295 
 
2,082 
 
1,296 
Maturities of short-term investments
 
4,526 
 
5,048 
 
7,159 
All other, net
 
196 
 
702 
 
824 
Net cash provided by (used in) investing activities
 
1,534 
 
(3,095) 
 
623 
Financing activities:
Long-term debt – borrowings
 
1,631 
 
1,589 
 
3,379 
                          – repayments
 
(1,984) 
 
(1,079) 
 
(2,280) 
Debt issuance costs
 
(15) 
 
(15) 
 
(39) 
Issuance of common stock
 
25 
 
62 
 
243 
Common stock repurchased
 
(9,189) 
 
(11,572) 
 
(11,922) 
Dividends paid
 
(1,154) 
 
(1,261) 
 
(1,279) 
Distributions to noncontrolling interests
 
(1,377) 
 
(1,281) 
 
(1,214) 
Repurchases of noncontrolling interests
 
(326) 
 
— 
 
(491) 
(Millions of dollars)
2024
2023
2022
82

Redemption of noncontrolling interests - preferred units
 
— 
 
(600) 
 
— 
All other, net
 
(45) 
 
(50) 
 
(44) 
Net cash used in financing activities
 
(12,434) 
 
(14,207) 
 
(13,647) 
Net change in cash, cash equivalents and restricted cash
$ 
(2,235) 
$ 
(3,185) 
$ 
3,337 
Cash, cash equivalents and restricted cash at beginning of period(a)
 
5,446 
 
8,631 
 
5,294 
Cash, cash equivalents and restricted cash at end of period(a)
$ 
3,211 
$ 
5,446 
$ 
8,631 
(Millions of dollars)
2024
2023
2022
(a)
Restricted cash is included in other current assets on our consolidated balance sheets.
The accompanying notes are an integral part of these consolidated financial statements.
83

Marathon Petroleum Corporation
Consolidated Statements of Equity and Redeemable Noncontrolling Interest
 
MPC Stockholders’ Equity
 
 
Common Stock
Treasury Stock
Additional 
Paid-in 
Capital
Retained 
Earnings
Accumulated 
Other 
Comprehensive 
Income (Loss)
Non-
controlling 
Interests
Total 
Equity
Redeemable 
Non-
controlling 
Interest
(Shares in millions; 
amounts in millions of dollars)
Shares
Amount
Shares
Amount
Balance as of December 31, 
2021
 984 
$ 10 
 (405) 
$ (19,904) $ 33,262 
$ 12,905 
$ 
(67) 
$ 6,410 
$ 32,616 
$ 
965 
Net income
 
— 
 
— 
 
— 
 
— 
 
— 
 14,516 
 
— 
 1,446 
 15,962 
 
88 
Dividends declared on common 
stock ($2.49 per share)
 
— 
 
— 
 
— 
 
— 
 
— 
 (1,279)  
— 
 
— 
 (1,279) 
 
— 
Distributions to noncontrolling 
interests
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 (1,129) 
 (1,129) 
 
(85) 
Other comprehensive income
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 
69 
 
— 
 
69 
 
— 
Shares repurchased
 
— 
 
— 
 (131) 
 (11,933)  
— 
 
— 
 
— 
 
— 
 (11,933) 
 
— 
Share-based compensation
 
6 
 
— 
 
— 
 
(4) 
 
260 
 
— 
 
— 
 
4 
 
260 
 
— 
Equity transactions of MPLX
 
— 
 
— 
 
— 
 
— 
 
(120) 
 
— 
 
— 
 
(327) 
 
(447) 
 
— 
Balance as of December 31, 
2022
 990 
$ 10 
 (536) 
$ (31,841) $ 33,402 
$ 26,142 
$ 
2 
$ 6,404 
$ 34,119 
$ 
968 
Net income
 
— 
 
— 
 
— 
 
— 
 
— 
 
9,681 
 
— 
 1,397 
 11,078 
 
94 
Dividends declared on common 
stock ($3.075 per share)
 
— 
 
— 
 
— 
 
— 
 
— 
 (1,261)  
— 
 
— 
 (1,261) 
 
— 
Distributions to noncontrolling 
interests
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 (1,187) 
 (1,187) 
 
(94) 
Other comprehensive loss
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 
(133) 
 
— 
 
(133) 
 
— 
Shares repurchased
 
— 
 
— 
 
(89) 
 (11,661)  
— 
 
— 
 
— 
 
— 
 (11,661) 
 
— 
Share-based compensation
 
3 
 
— 
 
— 
 
— 
 
67 
 
2 
 
— 
 
6 
 
75 
 
— 
Equity transactions of MPLX
 
— 
 
— 
 
— 
 
— 
 
(4) 
 
(2) 
 
— 
 
(520) 
 
(526) 
 
(73) 
Balance as of December 31, 
2023
 993 
$ 10 
 (625) 
$ (43,502) $ 33,465 
$ 34,562 
$ 
(131) 
$ 6,100 
$ 30,504 
$ 
895 
Net income
 
— 
 
— 
 
— 
 
— 
 
— 
 
3,445 
 
— 
 1,595 
 
5,040 
 
27 
Dividends declared on common 
stock ($3.385 per share)
 
— 
 
— 
 
— 
 
— 
 
— 
 (1,154)  
— 
 
— 
 (1,154) 
 
— 
Distributions to noncontrolling 
interests
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 (1,333) 
 (1,333) 
 
(44) 
Other comprehensive income
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 
17 
 
— 
 
17 
 
— 
Shares repurchased
 
— 
 
— 
 
(53) 
 
(9,121)  
— 
 
— 
 
— 
 
— 
 (9,121) 
 
— 
Share-based compensation
 
1 
 
— 
 
— 
 
— 
 
55 
 
(5) 
 
— 
 
7 
 
57 
 
— 
Equity transactions of MPLX
 
— 
 
— 
 
— 
 
— 
 
104 
 
— 
 
— 
 
189 
 
293 
 
(675) 
Balance as of December 31, 
2024
 994 
$ 10 
 (678) 
$ (52,623) $ 33,624 
$ 36,848 
$ 
(114) 
$ 6,558 
$ 24,303 
$ 
203 
The accompanying notes are an integral part of these consolidated financial statements.
84

Notes to Consolidated Financial Statements
1. Description of the Business and Basis of Presentation 
Description of the Business 
We are a leading, integrated, downstream energy company headquartered in Findlay, Ohio. We operate one of the nation's 
largest refining systems. We sell refined products to wholesale marketing customers domestically and internationally, to buyers 
on the spot market and to independent entrepreneurs who operate branded outlets. We also sell transportation fuel to 
consumers through direct dealer locations under long-term supply contracts. MPC’s midstream operations are primarily 
conducted through MPLX, which owns and operates crude oil and light product transportation and logistics infrastructure as well 
as gathering, processing and fractionation assets. We own the general partner and a majority limited partner interest in MPLX. In 
addition, we produce and market renewable diesel in the United States. 
On May 14, 2021, we completed the sale of Speedway, our company-owned and operated retail transportation fuel and 
convenience store business, to 7-Eleven, Inc. (“7-Eleven”). The transaction provided for adjustments to working capital and 
miscellaneous items, which were finalized with 7-Eleven in the fourth quarter of 2022. These adjustments are reported separately 
as discontinued operations, net of tax, in our consolidated statements of income and within our consolidated statements of cash 
flow. 
Refer to Notes 5 and 10 for additional information about our operations.
Basis of Presentation 
All significant intercompany transactions and accounts have been eliminated.
Certain prior period financial statement amounts have been reclassified to conform to current period presentation. 
In the fourth quarter of 2024, we established a Renewable Diesel segment, which includes renewable diesel activities and assets 
historically reported in the Refining & Marketing segment. Prior period segment information has been recast for comparability. 
See Notes 10, 14, 15 and 20 for additional information and for prior period recast information.
   
2. Summary of Principal Accounting Policies 
Principles Applied in Consolidation
These consolidated financial statements include the accounts of our majority-owned, controlled subsidiaries and MPLX. As of 
December 31, 2024, we owned the general partner and approximately 64 percent of the outstanding MPLX common units. Due 
to our ownership of the general partner interest, we have determined that we control MPLX and therefore we consolidate MPLX 
and record a noncontrolling interest for the interest owned by the public. Changes in ownership interest in consolidated 
subsidiaries that do not result in a change in control are recorded as equity transactions. 
Investments in entities over which we have significant influence, but not control, are accounted for using the equity method of 
accounting. This includes entities in which we hold majority ownership but the minority shareholders have substantive 
participating rights. Income from equity method investments represents our proportionate share of net income generated by the 
equity method investees.
Differences in the basis of the investments and the separate net asset values of the investees, if any, are amortized into net 
income over the remaining useful lives of the underlying assets and liabilities, except for any excess related to goodwill. Equity 
method investments are evaluated for impairment whenever changes in the facts and circumstances indicate an other than 
temporary loss in value has occurred. When the loss is deemed to be other than temporary, the carrying value of the equity 
method investment is written down to fair value.
Use of Estimates 
The preparation of financial statements in accordance with generally accepted accounting principles requires management to 
make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent 
assets and liabilities as of the date of the consolidated financial statements and the reported amounts of revenues and expenses 
during the respective reporting periods. Actual results could differ from those estimates.
Revenue Recognition
We recognize revenue based on consideration specified in contracts or agreements with customers when we satisfy our 
performance obligations by transferring control over products or services to a customer. We made an accounting policy election 
that all taxes assessed by a governmental authority that are both imposed on and concurrent with a revenue-producing 
transaction and collected from our customers will be recognized on a net basis within sales and other operating revenues. 
85

Our revenue recognition patterns are described below by reportable segment:
•
Refining & Marketing and Renewable Diesel  - The vast majority of our Refining & Marketing and Renewable Diesel 
contracts contain pricing that is based on the market price for the product at the time of delivery. Our obligations to 
deliver product volumes are typically satisfied and revenue is recognized when control of the product transfers to our 
customers. Concurrent with the transfer of control, we typically receive the right to payment for the delivered product, 
the customer accepts the product and the customer has significant risks and rewards of ownership of the product. 
Payment terms require customers to pay shortly after delivery and do not contain significant financing components. 
•
Midstream - Midstream revenue transactions typically are defined by contracts under which we sell a product or provide 
a service. Revenues from sales of product are recognized when control of the product transfers to the customer. 
Revenues from services are recognized over time when the performance obligation is satisfied as services are provided 
in a series. We have elected to use the output measure of progress to recognize revenue based on the units delivered, 
processed or transported. The transaction prices in our Midstream contracts often have both fixed components, related 
to minimum volume commitments, and variable components, which are primarily dependent on volumes. Variable 
consideration will generally not be estimated at contract inception as the transaction price is specifically allocable to the 
services provided at each period end. 
Refer to Note 20 for disclosure of our revenue disaggregated by segment and product line and to Note 10 for a description of our 
reportable segment operations.
Crude Oil and Refined Product Exchanges and Matching Buy/Sell Transactions 
We enter into exchange contracts and matching buy/sell arrangements whereby we agree to deliver a particular quantity and 
quality of crude oil or refined products at a specified location and date to a particular counterparty and to receive from the same 
counterparty the same commodity at a specified location on the same or another specified date. The exchange receipts and 
deliveries are nonmonetary transactions, with the exception of associated grade or location differentials that are settled in 
cash. The matching buy/sell purchase and sale transactions are settled in cash. No revenues are recorded for exchange and 
matching buy/sell transactions as they are accounted for as exchanges of inventory. The exchange transactions are recognized 
at the carrying amount of the inventory transferred.
Cash and Cash Equivalents 
Cash and cash equivalents include cash on hand and on deposit and investments in highly liquid debt instruments with original 
maturities of three months or less.
Short-Term Investments
Investments with a maturity date greater than three months that we intend to convert to cash or cash equivalents within a year or 
less are classified as short-term investments in our consolidated balance sheets. Additionally, in accordance with ASC 320, 
Investments - Debt Securities, we have classified all short-term investments as available-for-sale securities and changes in fair 
market value are reported in other comprehensive income.
Accounts Receivable and Allowance for Doubtful Accounts 
Our receivables primarily consist of customer accounts receivable. Customer receivables are recorded at the invoiced amounts 
and generally do not bear interest. Allowances for doubtful accounts are generally recorded when it becomes probable the 
receivable will not be collected and are booked to bad debt expense. The allowance for doubtful accounts is the best estimate of 
the amount of probable credit losses in customer accounts receivable. We review the allowance quarterly and past-due balances 
over 150 days are reviewed individually for collectability. 
We mitigate credit risk with master netting agreements with companies engaged in the crude oil or refinery feedstock trading and 
supply business or the petroleum refining industry. A master netting agreement generally provides for a once per month net cash 
settlement of the accounts receivable from and the accounts payable to a particular counterparty.
Leases 
Contracts with a term greater than one year that convey the right to direct the use of and obtain substantially all of the economic 
benefit of an asset are accounted for as right of use assets.
Right of use asset and lease liability balances are recorded at the commencement date at present value of the fixed lease 
payments using a secured incremental borrowing rate with a maturity similar to the lease term because our leases do not provide 
implicit rates. We have elected to include both lease and non-lease components in the present value of the lease payments for 
all lessee asset classes with the exception of our marine and third-party contractor service equipment leases. The lease 
component of the payment for the marine and equipment asset classes is determined using a relative standalone selling price. 
See Note 26 for additional disclosures about our lease contracts.
86

As a lessor under ASU No. 2016-02, Leases (“ASC 842”), MPLX may be required to reclassify existing operating leases to sales-
type leases upon modification and related reassessment of the leases. See Note 26 for further information regarding our ongoing 
evaluation of the impacts of lease reassessments as modifications occur. The net investment in sales-type leases is recorded 
within receivables, net and other noncurrent assets on the consolidated balance sheets. These amounts are comprised of the 
present value of the sum of the future minimum lease payments representing the value of the lease receivable and the 
unguaranteed residual value of the lease assets. Management assesses the net investment in sales-type leases for 
recoverability quarterly.
Inventories
Inventories are carried at the lower of cost or market value. Cost of inventories is determined primarily under the LIFO method. 
Costs for crude oil and other feedstocks and refined product inventories are aggregated on a consolidated basis for purposes of 
assessing if the LIFO cost basis of these inventories may have to be written down to market value.
Fair Value
We account for certain assets and liabilities at fair value. The hierarchy below lists three levels of fair value based on the extent 
to which inputs used in measuring fair value are observable in the market. We categorize each of our fair value measurements in 
one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. These 
levels are:
•
Level 1 – inputs are based upon unadjusted quoted prices for identical instruments in active markets. Our Level 1 
derivative assets and liabilities include exchange-traded contracts for crude oil and refined products measured at fair 
value with a market approach using the close-of-day settlement prices for the market. Commodity derivatives are 
covered under master netting agreements with an unconditional right to offset. Collateral deposits in futures commission 
merchant accounts covered by master netting agreements related to Level 1 commodity derivatives are classified as 
Level 1.
•
Level 2 – inputs are based upon quoted prices for similar instruments in active markets, quoted prices for identical or 
similar instruments in markets that are not active, and model-based valuation techniques for which all significant inputs 
are observable in the market or can be corroborated by observable market data for substantially the full term of the 
assets or liabilities. Where applicable, these models project future cash flows and discount the future amounts to a 
present value using market-based observable inputs including interest rate curves, credit spreads, and forward and spot 
prices for currencies. Our Level 2 investments include commercial paper, certificates of deposit, time deposits and 
corporate notes and bonds. Our Level 2 derivative assets and liabilities primarily include certain OTC contracts.
•
Level 3 – inputs are generally unobservable and typically reflect management’s estimates of assumptions that market 
participants would use in pricing the asset or liability. The fair values are therefore determined using model-based 
techniques, including option pricing models and discounted cash flow models. Our Level 3 assets and liabilities include 
goodwill, long-lived assets and intangible assets, when they are recorded at fair value due to an impairment charge and 
an embedded derivative liability relates to a natural gas purchase agreement embedded in a keep-whole processing 
agreement. Unobservable inputs used in the models are significant to the fair values of the assets and liabilities.
Derivative Instruments 
We use derivatives to economically hedge a portion of our exposure to commodity price risk and, historically, to interest rate risk. 
Our use of selective derivative instruments that assume market risk is limited. All derivative instruments (including derivative 
instruments embedded in other contracts) are recorded at fair value. Certain commodity derivatives are reflected on the 
consolidated balance sheets on a net basis by counterparty as they are governed by master netting agreements. Cash flows 
related to derivatives used to hedge commodity price risk and interest rate risk are classified in operating activities with the 
underlying transactions.
Derivatives not designated as accounting hedges 
Derivatives that are not designated as accounting hedges may include commodity derivatives used to hedge price risk on 
(1) inventories, (2) fixed price sales of refined products, (3) the acquisition of foreign-sourced crude oil, (4) the acquisition of 
ethanol for blending with refined products, (5) the sale of NGLs, (6) the purchase of natural gas, (7) the purchase of soybean oil 
and (8) the sale of propane. Changes in the fair value of derivatives not designated as accounting hedges are recognized 
immediately in net income.
Concentrations of credit risk 
All of our financial instruments, including derivatives, involve elements of credit and market risk. The most significant portion of 
our credit risk relates to nonperformance by counterparties. The counterparties to our financial instruments consist primarily of 
major financial institutions and companies within the energy industry. To manage counterparty risk associated with financial 
instruments, we select and monitor counterparties based on an assessment of their financial strength and on credit ratings, if 
available. Additionally, we limit the level of exposure with any single counterparty.
87

Property, Plant and Equipment 
Property, plant and equipment are recorded at cost and depreciated on a straight-line basis over the estimated useful lives of the 
assets, generally 10 to 40 years for refining and midstream assets, 25 years for office buildings and 4 to 7 years for other 
miscellaneous fixed assets. Such assets are reviewed for impairment whenever events or changes in circumstances indicate that 
the carrying amount of an asset group may not be recoverable. If the sum of the expected undiscounted future cash flows from 
the use of the asset group and its eventual disposition is less than the carrying amount of the asset group, an impairment 
assessment is performed and the excess of the book value over the fair value of the asset group is recorded as an impairment 
loss.
When items of property, plant and equipment are sold or otherwise disposed of, any gains or losses are reported in net 
income. Gains on the disposal of property, plant and equipment are recognized when earned, which is generally at the time of 
closing. If a loss on disposal is expected, such losses are recognized when the assets are classified as held for sale.
Interest expense is capitalized for qualifying assets under construction. Capitalized interest costs are included in property, plant 
and equipment and are depreciated over the useful life of the related asset.
Goodwill and Intangible Assets
Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in the acquisition of 
a business. Goodwill is not amortized, but rather is tested for impairment at the reporting unit level annually and when events or 
changes in circumstances indicate that the fair value of a reporting unit with goodwill has been reduced below carrying value. If 
we determine, based on a qualitative assessment, that it is not more likely than not that a reporting unit’s fair value is less than its 
carrying amount, no further impairment testing is required. If we do not perform a qualitative assessment or if that assessment 
indicates that further impairment testing is required, the fair value of each reporting unit is determined using an income and/or 
market approach which is compared to the carrying value of the reporting unit. If the carrying amount of the reporting unit 
exceeds its fair value, an impairment loss would be recognized in an amount equal to that excess, limited to the total amount of 
goodwill allocated to that reporting unit. The fair value under the income approach is calculated using the expected present value 
of future cash flows method. Significant assumptions used in the cash flow forecasts include future volumes, discount rates, and 
future capital requirements.
Amortization of intangibles with definite lives is calculated using the straight-line method, which is reflective of the benefit pattern 
in which the estimated economic benefit is expected to be received over the estimated useful life of the intangible asset. 
Intangibles subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the 
carrying amount of the intangible may not be recoverable. If the sum of the expected undiscounted future cash flows related to 
the asset is less than the carrying amount of the asset, an impairment loss is recognized based on the fair value of the asset. 
Intangibles not subject to amortization are tested for impairment annually and when circumstances indicate that the fair value is 
less than the carrying amount of the intangible. If the fair value is less than the carrying value, an impairment is recorded for the 
difference.
Major Maintenance Activities 
Costs for planned turnaround and other major maintenance activities are expensed in the period incurred. These types of costs 
include contractor repair services, materials and supplies, equipment rentals and our labor costs.
Environmental Costs 
Environmental expenditures for additional equipment that mitigates or prevents future contamination or improves environmental 
safety or efficiency of the existing assets are capitalized. We recognize remediation costs and penalties when the responsibility 
to remediate is probable and the amount of associated costs can be reasonably estimated. The timing of remediation accruals 
coincides with the completion of a feasibility study or the commitment to a formal plan of action. Remediation liabilities are 
accrued based on estimates of known environmental exposure and are discounted when the estimated amounts are reasonably 
fixed and determinable. If recoveries of remediation costs from third parties are probable, a receivable is recorded and is 
discounted when the estimated amount is reasonably fixed and determinable.
Asset Retirement Obligations 
The fair value of asset retirement obligations is recognized in the period in which the obligations are incurred if a reasonable 
estimate of fair value can be made. The majority of our recognized asset retirement liability relates to conditional asset retirement 
obligations for removal and disposal of fire-retardant material from certain refining facilities. The remaining recognized asset 
retirement liability relates to other refining assets, certain pipelines and processing facilities and other related pipeline assets. 
The fair values recorded for such obligations are based on the most probable current cost projections.
Asset retirement obligations have not been recognized for some assets because the fair value cannot be reasonably estimated 
since the settlement dates of the obligations are indeterminate. Such obligations will be recognized in the period when sufficient 
information becomes available to estimate a range of potential settlement dates. The asset retirement obligations principally 
include the hazardous material disposal and removal or dismantlement requirements associated with the closure of certain 
refining, terminal, pipeline and processing assets.
88

Our practice is to keep our assets in good operating condition through routine repair and maintenance of component parts in the 
ordinary course of business and by continuing to make improvements based on technological advances. As a result, we believe 
that generally these assets have no expected settlement date for purposes of estimating asset retirement obligations since the 
dates or ranges of dates upon which we would retire these assets cannot be reasonably estimated at this time.
Income Taxes 
Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between 
the financial statement carrying amounts of assets and liabilities and their tax bases. Deferred tax assets are recorded when it is 
more likely than not that they will be realized. The realization of deferred tax assets is assessed periodically based on several 
factors, primarily our expectation to generate sufficient future taxable income.
Share-Based Compensation Arrangements 
The fair value of stock options granted to our employees is estimated on the date of grant using the Black-Scholes option pricing 
model. The model employs various assumptions based on management’s estimates at the time of grant, which impact the 
calculation of fair value and ultimately, the amount of expense that is recognized over the vesting period of the stock option 
award. Of the required assumptions, the expected life of the stock option award and the expected volatility of our stock price 
have the most significant impact on the fair value calculation. The average expected life is based on our historical employee 
exercise behavior. The assumption for expected volatility of our stock price reflects a weighting of 50 percent of our common 
stock implied volatility and 50 percent of our common stock historical volatility.
The fair value of restricted stock awards granted to our employees is determined based on the fair market value of our common 
stock on the date of grant. The fair value of performance awards granted to our employees is determined using a Monte Carlo 
valuation model, which is updated quarterly, with appropriate mark-to-market adjustments made.
Our share-based compensation expense is recognized based on management’s estimate of the awards that are expected to 
vest, using the straight-line attribution method for all service-based awards with a graded vesting feature. Awards expected to 
vest are estimated using the historical data of our own employees. If actual forfeiture results are different than expected, 
adjustments to recognized compensation expense may be required in future periods. Unearned share-based compensation is 
charged to equity when restricted stock awards are granted. Compensation expense is recognized over the requisite service 
period and is adjusted if conditions of the restricted stock award are not met. 
Business Combinations 
We recognize and measure the assets acquired and liabilities assumed in a business combination based on their estimated fair 
values at the acquisition date. Any excess or deficiency of the purchase consideration when compared to the fair value of the net 
tangible assets acquired, if any, is recorded as goodwill or gain from a bargain purchase. For material acquisitions, management 
engages an independent valuation specialist to assist with the determination of fair value of the assets acquired, liabilities 
assumed, noncontrolling interest, if any, and goodwill, based on recognized business valuation methodologies. An income, 
market or cost valuation method may be utilized to estimate the fair value of the assets acquired, liabilities assumed, and 
noncontrolling interest, if any, in a business combination. The income valuation method represents the present value of future 
cash flows over the life of the asset using: (i) discrete financial forecasts, which rely on management’s estimates of revenue and 
operating expenses; (ii) long-term growth rates; and (iii) appropriate discount rates. The market valuation method uses prices 
paid for a reasonably similar asset by other purchasers in the market, with adjustments relating to any differences between the 
assets. The cost valuation method is based on the replacement cost of a comparable asset at prices at the time of the acquisition 
reduced for depreciation of the asset. If the initial accounting for the business combination is incomplete by the end of the 
reporting period in which the acquisition occurs, an estimate will be recorded. Subsequent to the acquisition date, and not later 
than one year from the acquisition date, we will record any material adjustments to the initial estimate based on new information 
obtained that would have existed as of the date of the acquisition. Any adjustment that arises from information obtained that did 
not exist as of the date of the acquisition will be recorded in the period of the adjustment. Acquisition-related costs are expensed 
as incurred in connection with each business combination. 
Environmental Credits and Obligations 
In order to comply with certain regulations, specifically the RFS2 requirements implemented by EPA and the cap-and-trade 
emission reduction program and low carbon fuel standard implemented by state programs, we are required to reduce our 
emissions, blend certain levels of biofuels or obtain allowances or credits to offset the obligations created by our operations. In 
regard to each program, we record an asset, included in other current assets or other noncurrent assets on the consolidated 
balance sheets, for allowances or credits owned in excess of our anticipated current period compliance requirements. The asset 
value is based on the product of the excess allowances or credits as of the balance sheet date, if any, and the weighted average 
cost of those allowances or credits. We record a liability, included in other current liabilities or deferred credits and other liabilities 
on the consolidated balance sheets, when we are deficient allowances or credits based on the product of the deficient amount as 
of the balance sheet date, if any, and either the fixed contract price or the market price of the allowances or credits at the balance 
sheet date. The cost of allowances or credits used for compliance is reflected in cost of revenues on the consolidated statements 
of income. Any gains or losses on the sale or expiration of allowances or credits are classified as other income on the 
consolidated statements of income. Proceeds from the sale of allowances or credits are reported in investing activities - all other, 
net on the consolidated statements of cash flows.
89

                                                                                                
3. Accounting Standards and Disclosure Rules 
Recently Adopted
ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures
The FASB issued this ASU to update reportable segment disclosure requirements primarily by requiring enhanced disclosures 
about significant segment expenses. During the fourth quarter of 2024, we applied the amendments in this ASU retrospectively to 
all periods presented in the financial statements. The enhanced disclosures for significant segment expenses are presented in 
Note 10 - Segment Information.
ASU 2023-01, Leases (Topic 842): Common Control Arrangements
The FASB issued this ASU to amend certain provisions of ASC 842 that apply to arrangements between related parties under 
common control. The ASU amends the accounting for the amortization period of leasehold improvements in common-control 
leases for all entities and requires certain disclosures when the lease term is shorter than the useful life of the asset. During the 
first quarter of 2024, we adopted this ASU and it did not have a material impact on our financial statements or disclosures.
Not Yet Adopted
ASU 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 
220-40): Disaggregation of Income Statement Expenses
In November 2024, the FASB issued an ASU to require more detailed information about specified categories of expenses 
(purchases of inventory, employee compensation, depreciation, amortization, and depletion) included in certain expense captions 
presented on the income statement. This ASU is effective for fiscal years beginning after December 15, 2026, and for interim 
periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The amendments may be applied 
either (1) prospectively to financial statements issued for reporting periods after the effective date of this ASU or (2) 
retrospectively to all prior periods presented in the financial statements. We are currently evaluating the impact this ASU will 
have on our disclosures.
SEC Release No. 33-11275, The Enhancement and Standardization of Climate-Related Disclosures for Investors
In March 2024, the SEC adopted rules under SEC Release No. 33-11275, The Enhancement and Standardization of Climate-
Related Disclosures for Investors, which requires registrants to provide certain climate-related information in their annual reports. 
As part of the disclosures, material impacts from severe weather events and other natural conditions will be required in the 
audited financial statements. In April 2024, the SEC voluntarily stayed the rules pending judicial review. Pending the results of 
the judicial review, the disclosure requirements are effective for the Company’s Annual Report on Form 10-K for the fiscal year 
ending December 31, 2025. We are evaluating the impact these rules, if effective, will have on our disclosures and monitoring 
the status of the judicial review.
ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures
In December 2023, the FASB issued an ASU to update income tax disclosure requirements to provide consistent categories and 
greater disaggregation of information in the rate reconciliation and to disaggregate income taxes paid by jurisdiction. This ASU is 
effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The amendments should be applied on 
a prospective basis, but retrospective application is permitted. This standard will result in additional disclosure.
90

4. Short-Term Investments
Investments Components
Investments as of December 31, 2024 had maturity dates of less than 90 days and therefore, are included in cash and cash 
equivalents. Below reflects the components of investments at December 31, 2023.
December 31, 2023
(Millions of dollars)
Fair Value 
Level
Amortized 
Cost
Unrealized 
Gains
Unrealized 
Losses
Fair Value
Cash and 
Cash 
Equivalents
Short-term 
Investments
Available-for-sale debt securities
Commercial paper
Level 2
$ 
3,154 
$ 
2 
$ 
— 
$ 
3,156 
$ 
281 
$ 
2,875 
Certificates of deposit and time deposits
Level 2
 
1,836 
 
1 
 
— 
 
1,837 
 
800 
 
1,037 
U.S. government securities
Level 1
 
785 
 
— 
 
(1)  
784 
 
— 
 
784 
Corporate notes and bonds
Level 2
 
85 
 
— 
 
— 
 
85 
 
— 
 
85 
Total available-for-sale debt securities
$ 
5,860 
$ 
3 
$ 
(1) $ 
5,862 
$ 
1,081 
$ 
4,781 
Cash
 
4,362 
 
4,362 
 
— 
Total
$ 10,224 
$ 
5,443 
$ 
4,781 
Our investment policy includes concentration limits and credit rating requirements, which limits our investments to high quality, 
short term and highly liquid securities.
Realized gains/losses were not material. 
5. Master Limited Partnership
We own the general partner and a majority limited partner interest in MPLX, which owns and operates crude oil and light product 
transportation and logistics infrastructure as well as gathering, processing and fractionation assets. We control MPLX through 
our ownership of the general partner interest and, as of December 31, 2024, we owned approximately 64 percent of the 
outstanding MPLX common units compared to 65 percent as of December 31, 2023. Our ownership was impacted by changes in 
the redeemable non-controlling interest and unit repurchases. 
Unit Repurchase Program
On August 2, 2022, MPLX announced its board of directors approved a $1.0 billion unit repurchase authorization. This unit 
repurchase authorization has no expiration date. MPLX may utilize various methods to effect the repurchases, which could 
include open market repurchases, negotiated block transactions, accelerated unit repurchases, tender offers or open market 
solicitations for units, some of which may be effected through Rule 10b5-1 plans. The timing and amount of future repurchases, if 
any, will depend upon several factors, including market and business conditions, and such repurchases may be suspended, 
discontinued or restarted at any time.
Total unit repurchases were as follows for the respective periods:
(In millions, except per unit data)
2024
2023
2022
Number of common units repurchased
 
8 
 
— 
 
15 
Cash paid for common units repurchased
$ 
326 
$ 
— 
$ 
491 
Average cost per unit
$ 
43.04 
$ 
— 
$ 
31.96 
As of December 31, 2024, MPLX had approximately $520 million remaining under its unit repurchase authorization.
Preferred Units Outstanding
The Series A preferred units are considered redeemable securities under GAAP due to the existence of redemption provisions 
upon a deemed liquidation event, which is outside MPLX’s control. Therefore, they are presented as temporary equity in the 
mezzanine section of our consolidated balance sheets. 
During the years ended December 31, 2024 and December 31, 2023, certain Series A preferred unitholders exercised their rights 
to convert their Series A preferred units into 21 million common units and 2 million common units, respectively. Approximately 
6 million Series A preferred units were outstanding as of December 31, 2024. On February 11, 2025, MPLX exercised its right to 
convert the remaining outstanding Series A preferred units into common units.
For a summary of changes in the redeemable preferred balance, see the accompanying consolidated statements of equity and 
redeemable noncontrollable interest.
91

Redemption of the Series B Preferred Units
On February 15, 2023, MPLX exercised its right to redeem all of its 600,000 outstanding preferred units (the “Series B preferred 
units”). MPLX paid unitholders the Series B preferred unit redemption price of $1,000 per unit. The final semi-annual distribution 
on the Series B preferred units was paid on February 15, 2023 in the usual manner.
The excess of the total redemption price of $600 million paid to Series B preferred unitholders over the carrying value of the 
Series B preferred units on the redemption date resulted in a $2 million net reduction to retained earnings.
Agreements
We have various long-term, fee-based commercial agreements with MPLX. Under these agreements, MPLX provides 
transportation, storage, distribution and marketing services to us. With certain exceptions, these agreements generally contain 
minimum volume commitments. These transactions are eliminated in consolidation but are reflected as intersegment 
transactions between our Refining & Marketing, Renewable Diesel and Midstream segments. We also have agreements with 
MPLX that establish fees for operational and management services provided between us and MPLX and for executive 
management services and certain general and administrative services provided by us to MPLX. These transactions are 
eliminated in consolidation but are reflected as intersegment transactions between corporate and our Midstream segment.
Noncontrolling Interest
As a result of equity transactions of MPLX, we are required to adjust non-controlling interest and additional paid-in capital. 
Changes in MPC’s additional paid-in capital resulting from changes in its ownership interest in MPLX were as follows:
(Millions of dollars)
2024
2023
2022
Increase (decrease) due to change in ownership
$ 
159 
$ 
(4) 
$ 
(164) 
Tax impact
 
(55) 
 
— 
 
44 
Increase (decrease) in MPC's additional paid-in capital, net of tax
$ 
104 
$ 
(4) 
$ 
(120) 
6. Variable Interest Entities 
Consolidated VIE
We control MPLX through our ownership of its general partner. MPLX is a VIE because the limited partners do not have 
substantive kick-out or participating rights over the general partner. We are the primary beneficiary of MPLX because in addition 
to our significant economic interest, we also have the ability, through our ownership of the general partner, to control the 
decisions that most significantly impact MPLX. We therefore consolidate MPLX and record a noncontrolling interest for the 
interest owned by the public. We also record a redeemable noncontrolling interest related to MPLX’s Series A preferred units.
The creditors of MPLX do not have recourse to MPC’s general credit or assets through guarantees or other financial 
arrangements, except as otherwise noted. MPC has effectively guaranteed certain indebtedness of LOOP LLC (“LOOP”) and 
LOCAP LLC (“LOCAP”), in which MPLX holds an interest. See Note 27 for more information. The assets of MPLX can only be 
used to settle its own obligations and any rights of MPC’s creditors to participate in the assets of MPLX are subject to prior 
claims of MPLX’s creditors. 
The following table presents balance sheet information for the assets and liabilities of MPLX, which are included in our 
consolidated balance sheets.
Assets
Cash and cash equivalents
$ 
1,519 
$ 
1,048 
Receivables, less allowance for doubtful accounts
 
731 
 
836 
Inventories
 
180 
 
159 
Other current assets
 
29 
 
33 
Equity method investments
 
4,531 
 
3,743 
Property, plant and equipment, net
 
19,154 
 
19,264 
Goodwill
 
7,645 
 
7,645 
Right of use assets
 
273 
 
264 
Other noncurrent assets
 
1,513 
 
1,644 
(Millions of dollars)
December 31,
2024
December 31,
2023
92

Liabilities
Accounts payable
$ 
719 
$ 
723 
Accrued taxes
 
82 
 
79 
Debt due within one year
 
1,693 
 
1,135 
Operating lease liabilities
 
45 
 
45 
Other current liabilities
 
370 
 
336 
Long-term debt
 
19,255 
 
19,296 
Deferred income taxes
 
18 
 
16 
Long-term operating lease liabilities
 
217 
 
211 
Deferred credits and other liabilities
 
445 
 
476 
(Millions of dollars)
December 31,
2024
December 31,
2023
Non-Consolidated VIEs
Martinez Renewables LLC
On September 21, 2022, MPC closed on the formation of the Martinez Renewables LLC joint venture. We determined that 
Martinez Renewables LLC is a VIE because, upon formation, the entity did not have sufficient equity to operate without additional 
financial support from its owners. We are not the primary beneficiary of this VIE because we do not have the ability to control the 
activities that significantly influence the economic outcomes of the entity and, therefore, do not consolidate the entity. 
MPLX VIEs
For those entities that have been deemed to be VIEs, neither MPLX nor any of its subsidiaries have been deemed to be the 
primary beneficiary due to voting rights on significant matters. While we have the ability to exercise influence through 
participation in the management committees which make all significant decisions, we have equal influence over each committee 
as a joint interest partner and all significant decisions require the consent of the other investors without regard to economic 
interest and as such we have determined that these entities should not be consolidated and apply the equity method of 
accounting with respect to our investments in each entity.
Sherwood Midstream LLC (“Sherwood Midstream”) has been deemed the primary beneficiary of Sherwood Midstream Holdings 
LLC (“Sherwood Midstream Holdings”) due to its controlling financial interest through its authority to manage the joint venture. As 
a result, Sherwood Midstream consolidates Sherwood Midstream Holdings. 
MPLX’s maximum exposure to loss as a result of its involvement with equity method investments includes its equity investment, 
any additional capital contribution commitments and any operating expenses incurred by the subsidiary operator in excess of its 
compensation received for the performance of the operating services. 
We account for our ownership interest in each of these investments as an equity method investment. See Note 14 for ownership 
percentages and investment balances.
7. Related Party Transactions 
Transactions with related parties were as follows:
(Millions of dollars)
2024
2023
2022
Sales to related parties
$ 
1,053 
$ 
915 
$ 
144 
Purchases from related parties
 
2,437 
 
1,818 
 
1,175 
Sales to related parties, which are included in sales and other operating revenues, consist primarily of refined product sales and 
renewable feedstock sales to certain of our equity affiliates.
Purchases from related parties are included in cost of revenues. We obtain utilities, transportation services and purchase ethanol 
and renewable diesel from certain of our equity affiliates. 
8. Earnings Per Share 
We compute basic earnings per share by dividing net income attributable to MPC less income allocated to participating securities 
by the weighted average number of shares of common stock outstanding. Since MPC grants certain incentive compensation 
awards to employees and non-employee directors that are considered to be participating securities, we have calculated our 
93

earnings per share using the two-class method. Diluted income per share assumes exercise of certain share-based 
compensation awards, provided the effect is not anti-dilutive.
Income from continuing operations, net of tax
$ 
5,067 
$ 
11,172 
$ 
15,978 
Net income attributable to noncontrolling interest
 
(1,622) 
 
(1,491) 
 
(1,534) 
Net income allocated to participating securities
 
(3) 
 
(7) 
 
(8) 
Redemption of preferred units
 
— 
 
(2) 
 
— 
Income from continuing operations available to common stockholders
 
3,442 
 
9,672 
 
14,436 
Income from discontinued operations, net of tax
 
— 
 
— 
 
72 
Income available to common stockholders
$ 
3,442 
$ 
9,672 
$ 
14,508 
Weighted average common shares outstanding:
Basic
 
340 
 
407 
 
512 
Effect of dilutive securities
 
1 
 
2 
 
4 
Diluted
 
341 
 
409 
 
516 
Income available to common stockholders per share:
Basic:
Continuing operations
$ 
10.11 
$ 
23.73 
$ 
28.17 
Discontinued operations
 
— 
 
— 
 
0.14 
Net income per share
$ 
10.11 
$ 
23.73 
$ 
28.31 
Diluted:
Continuing operations
$ 
10.08 
$ 
23.63 
$ 
27.98 
Discontinued operations
 
— 
 
— 
 
0.14 
Net income per share
$ 
10.08 
$ 
23.63 
$ 
28.12 
(In millions, except per share data)
2024
2023
2022
Potential common shares which were anti-dilutive and, therefore, omitted from the diluted share calculation, were immaterial for 
all periods.
9. Equity 
On November 5, 2024, MPC announced that our board of directors approved a $5.0 billion share repurchase authorization in 
addition to the $5.0 billion share repurchase authorization announced on April 30, 2024. Share repurchase authorizations since 
2012 totaled $60.05 billion. As of December 31, 2024, $7.75 billion remained available for repurchase under the share 
repurchase authorizations. These share repurchase authorizations have no expiration date.
We may utilize various methods to effect the repurchases, which could include open market repurchases, negotiated block 
transactions, tender offers, accelerated share repurchases or open market solicitations for shares, some of which may be 
effected through Rule 10b5-1 plans. The timing and amount of future repurchases, if any, will depend upon several factors, 
including market and business conditions, and such repurchases may be suspended, discontinued or restarted at any time.
Total share repurchases were as follows for the respective periods:
(In millions, except per share data)
2024
2023
2022
Number of shares repurchased
 
53 
 
89 
 
131 
Cash paid for shares repurchased(a)
$ 
9,077 
$ 
11,572 
$ 
11,922 
Average cost per share(b)
$ 
171.68 
$ 
131.27 
$ 
91.20 
(a) 
2024 excludes $112 million paid for excise tax on 2023 share purchases.
(b) 
The average cost per share includes excise tax on share repurchases resulting from the Inflation Reduction Act of 2022, but the excise tax 
does not reduce the remaining share repurchase authorization.
The number of shares repurchased shown above and the amount remaining available under the share repurchase authorizations 
reflect the repurchase of 203,173 common shares for $28 million that were transacted in the fourth quarter of 2024 and settled in 
the first quarter of 2025. 
94

10. Segment Information 
In the fourth quarter of 2024, we changed the internal financial information regularly provided to our chief operating decision 
maker (“CODM”) to evaluate the performance of and allocate resources to our reportable segments. We established a 
Renewable Diesel segment, which includes renewable diesel activities historically reported in the Refining & Marketing segment. 
This change in reportable segments will enhance comparability of MPC’s reporting with direct peers who report both a refining 
and renewable diesel segment. 
All prior periods have been recast for comparability.
We have three reportable segments: Refining & Marketing, Midstream and Renewable Diesel. Each of these segments is 
organized and managed based upon the nature of the products and services it offers.
•
Refining & Marketing – refines crude oil and other feedstocks at our refineries in the Gulf Coast, Mid-Continent and 
West Coast regions of the United States, purchases refined products and ethanol for resale and distributes refined 
products through transportation, storage, distribution and marketing services provided largely by our Midstream 
segment. We sell refined products to wholesale marketing customers domestically and internationally, to buyers on the 
spot market, to independent entrepreneurs who operate primarily Marathon® branded outlets and through long-term 
supply contracts with direct dealers who operate locations mainly under the ARCO® brand. 
•
Midstream – gathers, transports, stores and distributes crude oil, refined products, including renewable diesel, and other 
hydrocarbon-based products principally for the Refining & Marketing segment via refining logistics assets, pipelines, 
terminals, towboats and barges; gathers, processes and transports natural gas; and transports, fractionates, stores and 
markets NGLs. The Midstream segment primarily reflects the results of MPLX.
•
Renewable Diesel - processes renewable feedstocks into renewable diesel, markets renewable diesel and distributes 
renewable products through our Midstream segment and third parties. We sell renewable diesel to wholesale marketing 
customers, to buyers on the spot market and through long-term supply contracts with direct dealers who operate 
locations mainly under the ARCO® brand.
Our CODM evaluates the performance of our segments using segment adjusted EBITDA. Our CODM is our chief executive 
officer. The CODM uses adjusted EBITDA by segment results when making decisions about allocating capital and personnel as 
part of the annual business plan process and ongoing monitoring of performance. Amounts included in income from continuing 
operations before income taxes and excluded from adjusted EBITDA include: (i) depreciation and amortization; (ii) net interest 
and other financial costs; (iii) turnaround expenses; and (iv) other adjustments as deemed necessary. These items are either: (i) 
believed to be non-recurring in nature; (ii) not believed to be allocable or controlled by the segment; or (iii) not tied to the 
operational performance of the segment. Assets by segment are not a measure used to assess the performance of the company 
by the CODM and thus are not reported in our disclosures.
Segment adjusted EBITDA for reportable segments
Refining & Marketing
 
5,703 
$ 
13,705 
$ 
19,259 
Midstream
 
6,544 
 
6,171 
 
5,772 
Renewable Diesel
 
(150) 
 
(64) 
 
3 
Total reportable segments
$ 
12,097 
$ 
19,812 
$ 
25,034 
(Millions of dollars)
2024
2023
2022
95

Reconciliation of segment adjusted EBITDA for reportable 
segments to income from continuing operations before income 
taxes
Total reportable segments
$ 
12,097 
$ 
19,812 
$ 
25,034 
Corporate
 
(774) 
 
(737) 
 
(698) 
Refining & Renewable Diesel planned turnaround costs
 
(1,404) 
 
(1,201) 
 
(1,122) 
Renewable Diesel JV planned turnaround costs(a)
 
(9) 
 
(25) 
 
— 
Garyville incident response costs
 
— 
 
(16) 
 
— 
LIFO inventory (charge) credit
 
161 
 
(145) 
 
148 
Gain on sale of assets(b)
 
151 
 
198 
 
1,058 
Renewable volume obligation requirements(c)
 
— 
 
— 
 
238 
Litigation
 
— 
 
— 
 
27 
Depreciation and amortization
 
(3,337) 
 
(3,307) 
 
(3,215) 
Renewable Diesel JV depreciation and amortization(a) 
 
(89) 
 
(65) 
 
(1) 
Net interest and other financial costs
 
(839) 
 
(525) 
 
(1,000) 
Income from continuing operations before income taxes
$ 
5,957 
$ 
13,989 
$ 
20,469 
(Millions of dollars)
2024
2023
2022
(a) 
Represents MPC’s pro-rata share of expenses from joint ventures included within the Renewable Diesel segment. 
(b) 
2024 includes the gain from the Whistler Joint Venture Transaction (as defined in Note 14). 2023 includes the gain associated with the 
remeasurement of MPLX’s existing equity investment in MarkWest Torñado GP, L.L.C., arising from the acquisition of the remaining 40 
percent interest and the gain on the sale of our interest in South Texas Gateway Terminal LLC. 2022 includes the $549 million gain related 
to the contribution of assets by MPC on the formation of the Martinez Renewables LLC joint venture and the $509 million gain on lease 
reclassification. See Notes 14 and 26 for additional information.
(c)
Represents retroactive changes in renewable volume obligation requirements published by EPA in June 2022 for the 2020 and 2021 annual 
obligations.
Sales and other operating revenues
Refining & Marketing
Revenues from external customers(a)
$ 
131,588 
$ 
141,835 
$ 
171,461 
Intersegment revenues
 
175 
 
139 
 
135 
Refining & Marketing segment revenues
 
131,763 
 
141,974 
 
171,596 
Midstream
Revenues from external customers(a)
 
5,197 
 
4,911 
 
5,366 
Intersegment revenues
 
5,797 
 
5,597 
 
5,224 
Midstream segment revenues
 
10,994 
 
10,508 
 
10,590 
Renewable Diesel
Revenues from external customers(a)
 
2,079 
 
1,633 
 
626 
Intersegment revenues
 
25 
 
31 
 
126 
Renewable Diesel segment revenues
 
2,104 
 
1,664 
 
752 
Total segment revenues
 
144,861 
 
154,146 
 
182,938 
Less: intersegment revenues
 
5,997 
 
5,767 
 
5,485 
Consolidated sales and other operating revenues
$ 
138,864 
$ 
148,379 
$ 
177,453 
(Millions of dollars)
2024
2023
2022
(a) 
Includes sales to related parties. See Note 7 for additional information.
96

Income from equity method investments
Refining & Marketing
$ 
57 
$ 
66 
$ 
51 
Midstream
 
770 
 
735 
 
624 
Renewable Diesel
 
70 
 
(59) 
 
(20) 
Total segment income from equity method investments
 
897 
 
742 
 
655 
Corporate(a)
 
151 
 
— 
 
— 
Consolidated income from equity method investments
$ 
1,048 
$ 
742 
$ 
655 
(Millions of dollars)
2024
2023
2022
(a) 
Represents the gain from the Whistler Joint Venture Transaction. See Note 14 for additional information.
(Millions of dollars)
2024
2023
2022
Segment expenses
Refining & Marketing
Cost of purchases
$ 
112,938 
$ 
115,973 
$ 
139,660 
Refining operating costs
 
5,712 
 
5,625 
 
5,726 
Distribution costs
 
5,857 
 
5,645 
 
5,211 
Other segment items(a)
 
1,610 
 
1,092 
 
1,791 
Refining & Marketing segment expenses
$ 
126,117 
$ 
128,335 
$ 
152,388 
Midstream
Other segment items(b)
 
5,220 
 
5,072 
 
5,442 
Midstream segment expenses
$ 
5,220 
$ 
5,072 
$ 
5,442 
Renewable Diesel
Operating costs
 
269 
 
242 
 
106 
Distribution costs
 
95 
 
82 
 
61 
Other segment items(c)
 
1,960 
 
1,345 
 
562 
Renewable Diesel segment expenses
$ 
2,324 
$ 
1,669 
$ 
729 
(a) 
Other segment items for the Refining & Marketing segment include costs that are reimbursed by customers through commercial 
arrangements, as well as LIFO inventory adjustments.
(b) 
Other segment items for the Midstream segment include operating expenses and purchased product costs. For purposes of managing 
Midstream segment of MPC, the CODM is only provided consolidated Midstream expense information.
(c) 
Other segment items for the Renewable Diesel segment includes purchased product costs. 
(Millions of dollars)
2024
2023
2022
Depreciation and amortization
Refining & Marketing
$ 
1,767 
$ 
1,822 
$ 
1,783 
Midstream
 
1,405 
 
1,320 
 
1,310 
Renewable Diesel(a)
 
75 
 
65 
 
67 
Total segment depreciation and amortization
 
3,247 
 
3,207 
 
3,160 
Corporate
 
90 
 
100 
 
55 
Consolidated depreciation and amortization
$ 
3,337 
$ 
3,307 
$ 
3,215 
(a) 
Excludes our pro-rata share of Renewable Diesel JV depreciation and amortization of $89 million, $65 million and $1 million in 2024, 2023 
and 2022, respectively, which was adjusted for purposes of arriving at Renewable Diesel segment adjusted EBITDA. 
97

(Millions of dollars)
2024
2023
2022
Capital expenditures
Refining & Marketing
$ 
1,445 
$ 
998 
$ 
1,275 
Midstream
 
1,504 
 
1,105 
 
1,069 
Renewable Diesel
 
8 
 
313 
 
233 
Total segment capital expenditures and investments
 
2,957 
 
2,416 
 
2,577 
Less investments in equity method investees
 
509 
 
480 
 
405 
Plus:
Corporate
 
63 
 
83 
 
108 
Capitalized interest
 
56 
 
55 
 
103 
Consolidated capital expenditures(a)
$ 
2,567 
$ 
2,074 
$ 
2,383 
(a)
Includes changes in capital expenditure accruals. See Note 21 for a reconciliation of total capital expenditures to additions to property, plant 
and equipment as reported in the consolidated statements of cash flows.
No single customer accounted for more than 10 percent of annual revenues for the years ended December 31, 2024 and 
December 31, 2023. Sales to Speedway/7-Eleven from the Refining & Marketing segment represented 10 percent of our total 
annual revenues for the year ended December 31, 2022. See Note 20 for the disaggregation of our revenue by segment and 
product line.
We do not have significant operations in foreign countries. Therefore, revenues in foreign countries and long-lived assets located 
in foreign countries, including property, plant and equipment and investments, are not material to our operations.
11. Net Interest and Other Financial Costs 
Net interest and other financial costs were as follows:
(Millions of dollars)
2024
2023
2022
Interest income
$ 
(376) 
$ 
(530) 
$ 
(191) 
Interest expense
 
1,365 
 
1,325 
 
1,299 
Interest capitalized
 
(57) 
 
(60) 
 
(104) 
Pension and other postretirement non-service costs(a)
 
(38) 
 
(89) 
 
3 
Loss on extinguishment of debt
 
— 
 
9 
 
2 
Investments - net premium (discount) amortization
 
(91) 
 
(142) 
 
(30) 
Other financial costs
 
36 
 
12 
 
21 
Net interest and other financial costs
$ 
839 
$ 
525 
$ 
1,000 
(a) 
See Note 24. 
98

12. Income Taxes
The provision for income taxes from continuing operations consisted of:
(Millions of dollars)
2024
2023
2022
Current:
Federal
$ 
862 
$ 
2,359 
$ 
3,565 
State and local
 
144 
 
475 
 
629 
Foreign
 
8 
 
11 
 
7 
Total current
 
1,014 
 
2,845 
 
4,201 
Deferred:
Federal
 
(90) 
 
18 
 
191 
State and local
 
(33) 
 
(46) 
 
98 
Foreign
 
(1) 
 
— 
 
1 
Total deferred
 
(124) 
 
(28) 
 
290 
Income tax provision
$ 
890 
$ 
2,817 
$ 
4,491 
Our effective tax rate for the year ended December 31, 2024 was lower than the U.S. statutory rate primarily due to permanent 
tax benefits related to net income attributable to noncontrolling interests.
Our effective tax rate for the year ended December 31, 2023 was lower than the U.S. statutory rate primarily due to permanent 
tax benefits related to net income attributable to noncontrolling interests, partially offset by state taxes.
Our effective tax rate for the year ended December 31, 2022 was higher than the U.S. statutory rate primarily due to state taxes, 
partially offset by permanent tax benefits related to net income attributable to noncontrolling interests.
A reconciliation of the federal statutory income tax rate to the effective tax rate applied to income from continuing operations 
before income taxes follows:
2024
2023
2022
Federal statutory rate 
 21 %
 21 %
 21 %
State and local income taxes, net of federal income tax effects
 2 
 2 
 3 
Noncontrolling interests
 (6) 
 (2) 
 (2) 
Other
 (2) 
 (1) 
 — 
Effective tax rate applied to income from continuing operations before 
income taxes
 15 %
 20 %
 22 %
99

Deferred tax assets and liabilities resulted from the following:
December 31,
(Millions of dollars)
2024
2023
Deferred tax assets:
Employee benefits
$ 
558 
$ 
549 
Environmental remediation
 
81 
 
89 
Finance lease obligations
 
433 
 
365 
Operating lease liabilities
 
243 
 
229 
Net operating loss carryforwards
 
39 
 
44 
Tax credit carryforwards
 
22 
 
10 
Goodwill and other intangibles
 
75 
 
71 
Other
 
95 
 
96 
Total deferred tax assets
 
1,546 
 
1,453 
Valuation allowance
 
(51) 
 
(28) 
Total net deferred tax assets
 
1,495 
 
1,425 
Deferred tax liabilities:
Property, plant and equipment
 
2,584 
 
2,684 
Inventories
 
672 
 
627 
Investments in subsidiaries and affiliates
 
3,742 
 
3,706 
Right of use assets
 
246 
 
230 
Other
 
20 
 
11 
Total deferred tax liabilities
 
7,264 
 
7,258 
Net deferred tax liabilities
$ 
5,769 
$ 
5,833 
Net deferred tax liabilities were classified in the consolidated balance sheets as follows:
December 31,
(Millions of dollars)
2024
2023
Assets:
Other noncurrent assets
$ 
2 
$ 
1 
Liabilities:
Deferred income taxes
 
5,771 
 
5,834 
Net deferred tax liabilities
$ 
5,769 
$ 
5,833 
At both December 31, 2024 and 2023, federal operating loss carryforwards were $3 million, which includes a mix of indefinite 
carryforward ability and expiration periods ranging from 2032 through 2034. As of December 31, 2024 and 2023, state and local 
operating loss and tax credit carryforwards were $42 million and $31 million, respectively, which includes a mix of indefinite 
carryforward ability and expiration periods ranging from 2029 through 2044. At December 31, 2024 and 2023, foreign operating 
loss carryforwards were $16 million and $20 million, respectively, which includes expiration periods ranging from 2028 through 
2043.
As of December 31, 2024 and 2023, $51 million and $28 million of valuation allowances have been recorded related to income 
taxes, related to realizability of foreign tax operating losses, state tax net operating losses and credits, and related deferred tax 
assets. 
MPC is continuously undergoing examination of its U.S. federal income tax returns by the Internal Revenue Service (“IRS”). 
Since 2012, we have continued to participate in the Compliance Assurance Process (“CAP”). CAP is a real-time audit of the U.S. 
federal income tax return that allows the IRS, working in conjunction with MPC, to determine tax return compliance with the U.S. 
federal tax law prior to filing the return. This program provides us with greater certainty about our tax liability for years under 
examination by the IRS. MPLX and its subsidiaries are undergoing examination of its U.S. federal income tax returns by the IRS 
for the tax years 2019 through 2022. We do not believe the eventual outcome of such audits will have a material impact on our 
financial statements as of December 31, 2024.
100

Further, we are routinely involved in U.S. state income tax audits. We believe all other audits will be resolved with the amounts 
provided for these liabilities. As of December 31, 2024, we have various state and local income tax returns subject to 
examination for years 2016 through 2023, depending on jurisdiction. 
The following table summarizes the activity in unrecognized tax benefits:
(Millions of dollars)
2024
2023
2022
January 1 balance
$ 
38 
$ 
57 
$ 
37 
Additions for tax positions of prior years
 
— 
 
8 
 
38 
Reductions for tax positions of prior years
 
(5) 
 
(6) 
 
(2) 
Settlements
 
(6) 
 
(20) 
 
(15) 
Statute of limitations
 
— 
 
(1) 
 
(1) 
December 31 balance
$ 
27 
$ 
38 
$ 
57 
If the unrecognized tax benefits as of December 31, 2024 were recognized, $27 million would affect our effective income tax rate. 
There were $7 million of uncertain tax positions as of December 31, 2024 for which it is reasonably possible that the amount of 
unrecognized tax benefits would significantly decrease during the next twelve months.
Interest and penalties related to income taxes are recorded as part of the provision for income taxes. Such interest and penalties 
were net expenses (benefits) of $(2) million, less than $(1) million and $1 million in 2024, 2023 and 2022, respectively. At 
December 31, 2024 and 2023, $2 million and $4 million of interest and penalties were accrued related to income taxes, 
respectively.
13. Inventories 
December 31,
(Millions of dollars)
2024
2023
Crude oil and other feedstocks
$ 
3,185 
$ 
3,211 
Refined products
 
5,137 
 
4,940 
Materials and supplies
 
1,246 
 
1,166 
Total
$ 
9,568 
$ 
9,317 
The cost of inventories of crude oil and other feedstocks and refined products is determined under the LIFO method. The LIFO 
method accounted for 87 percent of total inventory value at both December 31, 2024 and 2023. Current acquisition costs were 
estimated to exceed the LIFO inventory value at December 31, 2024 and 2023 by $2.53 billion and $2.77 billion, respectively.
14. Equity Method Investments
Refining & Marketing Segment
LF Bioenergy Acquisition
On March 8, 2023, MPC announced the acquisition of a 49.9 percent interest in LF Bioenergy, an emerging producer of 
renewable natural gas (“RNG”) in the U.S., for approximately $56 million, which included funding for on-going operations and 
project development. LF Bioenergy has been focused on developing and growing a portfolio of dairy farm-based, low carbon 
intensity RNG projects. MPC accounts for our ownership interest in LF Bioenergy as an equity method investment.
Watson Cogeneration Company
On June 1, 2022, MPC purchased the remaining 49 percent interest in Watson Cogeneration Company from NRG Energy, Inc. 
for approximately $59 million. This entity is now consolidated and included in our consolidated results. It was previously 
accounted for as an equity method investment.
The excess of the $62 million fair value over the $25 million book value of our 51 percent ownership interest in Watson 
Cogeneration Company resulted in a $37 million gain, which is included in the net gain on disposal of assets line of the 
accompanying consolidated statements of income. 
101

Midstream Segment - MPLX
BANGL, LLC Acquisition
On July 31, 2024, MPLX exercised its right of first offer under the BANGL, LLC joint venture agreement to purchase an additional 
20 percent ownership interest in BANGL, LLC for $210 million cash, increasing total ownership interest to 45 percent (the 
“BANGL Transaction”). BANGL is a natural gas liquids pipeline system connecting the Delaware and Midland basins to the 
fractionation market in the Gulf Coast and export markets. The purchase price of the additional 20 percent ownership interest in 
BANGL, LLC exceeded our portion of the underlying net assets of the joint venture by approximately $156 million. This basis 
difference is being amortized into net income over the remaining estimated useful lives of the underlying net assets. Following 
the BANGL Transaction, our investment in BANGL, LLC continues to be accounted for as an equity method investment.
Whistler Joint Venture Transaction
On May 29, 2024, MPLX and its joint venture partner contributed their respective membership interest in Whistler Pipeline, LLC 
to a newly formed joint venture, WPC Parent, LLC, and issued a 19 percent voting interest in WPC Parent, LLC to an affiliate of 
Enbridge Inc. in exchange for the contribution of cash and the Rio Bravo Pipeline project (collectively the “Whistler Joint Venture 
Transaction”). As a result of the transaction, MPLX’s voting interest in the joint venture was reduced from 37.5 percent to 30.4 
percent. MPLX recognized a gain of $151 million at closing and received a cash distribution of $134 million, recorded as a return 
of capital, related to the dilution of the ownership interest. The gain is included in income from equity method investments on the 
accompanying consolidated statements of income and the return of capital is included in investments - redemptions, repayments, 
return of capital and sales proceeds within the investing section of the accompanying consolidated statements of cash flows.
Midstream Acquisition
On March 22, 2024, MPLX used $625 million of cash on hand to purchase additional ownership interest in existing joint ventures 
and gathering assets, which will enhance MPLX’s position in the Utica basin. Prior to the acquisition, MPLX owned an indirect 
interest in Ohio Gathering Company, L.L.C. (“OGC”) and a direct interest in Ohio Condensate Company, L.L.C. (“OCC”) and now 
owns a combined 73 percent interest in OGC and a 100 percent interest in OCC, and a dry gas gathering system in the Utica 
basin. OGC continues to be accounted for as an equity method investment as MPLX did not obtain control of OGC as a result of 
the transaction. OGC is considered a VIE and MPLX is not deemed to be the primary beneficiary due to voting rights on 
significant matters. The acquisition date fair value of our investment in OGC exceeded our portion of the underlying net assets of 
the joint venture by approximately $75 million. This basis difference is being amortized into net income over the remaining 
estimated useful lives of the underlying net assets. OCC was previously accounted for as an equity method investment, and it is 
now consolidated and included in our consolidated financial results. 
The acquisition was accounted for as a business combination requiring all the acquired assets and liabilities to be remeasured to 
fair value resulting in a consolidated fair value of net assets and liabilities of $625 million. The fair value includes $507 million 
related to acquired interests in the joint ventures and the remaining balance related to other acquired assets and liabilities. The 
revaluation of MPLX’s existing 62 percent equity method investment in OCC resulted in a $20 million gain, which is included in 
net gain on disposal of assets on the accompanying consolidated statements of income. The fair value of equity method 
investments was based on a discounted cash flow model.
MarkWest Torñado GP, L.L.C.
On December 15, 2023, MPLX used $303 million of cash on hand to purchase the remaining 40 percent interest in MarkWest 
Torñado GP, L.L.C. (“Torñado”) for approximately $270 million, including cash paid for working capital, and to extend the term of 
a gathering and processing agreement for approximately $33 million. As a result of this transaction, this entity is now 
consolidated and included in our consolidated financial results. It was previously accounted for as an equity method investment. 
Torñado provides natural gas gathering and processing related services in the Permian basin. The results for this business are 
reported within our Midstream segment.
At December 15, 2023, the carrying value of MPLX’s 60 percent equity investment in Torñado was $311 million. Upon acquisition 
of the remaining 40 percent member interest, the existing equity investment was remeasured to fair value resulting in the 
recognition of a $92 million gain, which was presented in the net gain on disposal of assets line on the accompanying 
consolidated statements of income. The fair value of the previously held equity method investment was primarily based on the 
price negotiated for the 40 percent interest in Torñado.
The acquisition was accounted for as a business combination. While the purchase price for the 40 percent interest was 
$270 million, all of the Torñado assets and liabilities were remeasured to fair value resulting in a consolidated fair value of net 
assets and liabilities of $673 million, consisting primarily of property, plant and equipment and identifiable intangible assets. The 
fair value of property, plant and equipment was based primarily on the cost approach. The fair value of the identifiable intangible 
assets, consisting of various customer contracts, was primarily based on the multi-period excess earnings method, which is an 
income approach.
102

Midstream Segment - MPC-Retained
Jones Act Blue Water Vessels
Marathon Coastal Holdings LLC (formerly known as Crowley Coastal Partners LLC, “Coastal Holdings”) was formed in May 2016 
as a joint venture to own, through its subsidiaries, four Jones Act mid-range product tankers and three Jones Act series 750 ATB 
vessels. Prior to October 1, 2024, MPC accounted for our 50 percent ownership in Coastal Holdings as an equity method 
investment.
On December 1, 2022, MPC purchased all of Coastal Holdings’ interest in Marathon Tanker Holdings LLC (formerly known as 
Crowley Ocean Partners LLC, “Tankers Holdings”) and its four subsidiaries, which own the four mid-range product tankers, for 
approximately $485 million, which included $196 million to pay off the debt associated with the four tankers. Subsequent to the 
acquisition date, Tankers Holdings is wholly owned by MPC and is included in our consolidated results. 
The excess of the $144 million fair value over the $125 million book value of our 50 percent indirect interest in Tankers Holdings 
resulted in a $19 million gain, which is included in income from equity method investments on the accompanying consolidated 
statements of income.
On October 1, 2024, MPC paid approximately $66 million in cash to purchase the remaining 50 percent interest in Coastal 
Holdings and its subsidiary, Marathon Blue Water Holdings LLC (formerly known as Crowley Blue Water Partners, LLC, “Blue 
Water Holdings”), which owns the three ATB vessels, from our joint venture partner. As part of the transaction, MPC assumed 
Blue Water Holdings’ United States Maritime Administration guaranteed obligations (the “MARAD Debt”) with an aggregate 
outstanding principal amount and accrued interest value of $175 million as of October 1, 2024. See Note 19 for additional 
information. Subsequent to the acquisition date, Coastal Holdings is wholly owned by MPC and is included in our consolidated 
results. 
The excess of the $66 million fair value over the $50 million book value of our 50 percent indirect interest in Coastal Holdings 
resulted in a $16 million gain, which is included in income from equity method investments on the accompanying consolidated 
statements of income.
South Texas Gateway Terminal LLC
On August 1, 2023, MPC sold its 25 percent interest in South Texas Gateway Terminal LLC (“South Texas Gateway”) to an 
affiliate of Gibson Energy Inc. (“Gibson Energy”). Gibson Energy paid $1.1 billion in cash to acquire 100 percent of the 
membership interests of South Texas Gateway from MPC and its other members. South Texas Gateway owns an oil export 
facility in the U.S. Gulf Coast. MPC’s proceeds were $270 million, resulting in a gain of $106 million, which is included in net gain 
on disposal of assets on the accompanying consolidated statements of income.
Renewable Diesel Segment
Martinez Renewables LLC
On September 21, 2022, MPC closed on the formation of the Martinez Renewables LLC joint venture. MPC contributed property, 
plant and equipment, inventory, and working capital with an estimated fair value of $1.471 billion and Neste contributed 
$728 million in cash. MPC recorded a gain of $549 million resulting from the difference between the carrying value and fair value 
of the contributed property, plant and equipment and inventory. Subsequent to the closing, the joint venture paid a special 
distribution to MPC of $500 million, which is reflected as a return of capital in MPC’s consolidated statements of cash flows. After 
the special distribution, MPC’s investment value in the entity was approximately $971 million. We apply the equity method of 
accounting with respect to our investment in the entity.
103

Refining & Marketing
The Andersons Marathon Holdings LLC
50%
$ 
190 
$ 
227 
Other(a)
X
 
92 
 
75 
Refining & Marketing Total
$ 
282 
$ 
302 
Midstream
MPLX
BANGL
45%
$ 
281 
$ 
63 
Illinois Extension Pipeline Company, L.L.C.
35%
 
218 
 
228 
LOOP LLC
41%
 
310 
 
314 
MarEn Bakken Company LLC
25%
 
526 
 
449 
MarkWest EMG Jefferson Dry Gas Gathering Company, 
L.L.C.
X
67%
 
329 
 
336 
MarkWest Utica EMG, L.L.C.
X
59%
 
742 
 
676 
Ohio Gathering Co, LLC
X
35%
 
470 
 
— 
Sherwood Midstream LLC
X
50%
 
488 
 
500 
WPC Parent, LLC
30%
 
208 
 
214 
Other(a)
X
 
959 
 
963 
MPLX Total
$ 
4,531 
$ 
3,743 
MPC-Retained
Capline Pipeline Company LLC
33%
$ 
382 
$ 
402 
Gray Oak Pipeline, LLC
25%
 
274 
 
284 
Other(a)
X
 
114 
 
170 
MPC-Retained Total
$ 
770 
$ 
856 
Midstream Total
$ 
5,301 
$ 
4,599 
Renewable Diesel
Martinez Renewables LLC
X
50%
$ 
1,184 
$ 
1,266 
Other(a)
X
 
90 
 
93 
Renewable Diesel Total
$ 
1,274 
$ 
1,359 
Total
$ 
6,857 
$ 
6,260 
Ownership as of
Carrying value at
December 31,
December 31,
(In millions of dollars, except ownership percentages)
VIE
2024
2024
2023
(a) 
Some investments included within “Other” have been deemed to be VIEs.
104

Summarized financial information for all equity method investments in affiliated companies, combined, was as follows:
(Millions of dollars)
2024
2023
2022
Income statement data:
Revenues and other income
$ 
9,259 
$ 
6,544 
$ 
5,069 
Income from operations
 
2,698 
 
2,428 
 
1,907 
Net income
 
2,211 
 
2,089 
 
1,740 
Balance sheet data – December 31:
Current assets
$ 
2,687 
$ 
2,610 
Noncurrent assets
 
24,656 
 
21,098 
Current liabilities
 
1,927 
 
1,569 
Noncurrent liabilities
 
7,837 
 
6,719 
As of December 31, 2024, the carrying value of our equity method investments was $521 million higher than the underlying net 
assets of investees. This basis difference is being amortized into net income over the remaining estimated useful lives of the 
underlying net assets, except for $208 million of excess related to goodwill and other non-depreciable assets. 
Dividends and partnership distributions received from equity method investees (excluding distributions that represented a return 
of capital previously contributed) were $1.215 billion, $941 million and $772 million in 2024, 2023 and 2022, respectively.
15. Property, Plant and Equipment (PP&E) 
(Millions of dollars)
Gross 
PP&E
Accumulated 
Depreciation
Net 
PP&E
Gross 
PP&E
Accumulated 
Depreciation
Net 
PP&E
Refining & Marketing
$ 
32,965 
$ 
19,015 
$ 
13,950 
$ 
31,536 
$ 
17,721 
$ 
13,815 
Midstream
 
30,697 
 
10,798 
 
19,899 
 
29,620 
 
9,589 
 
20,031 
Renewable Diesel
 
976 
 
338 
 
638 
 
960 
 
271 
 
689 
Corporate
 
1,679 
 
1,138 
 
541 
 
1,632 
 
1,055 
 
577 
Total(a)
$ 
66,317 
$ 
31,289 
$ 
35,028 
$ 
63,748 
$ 
28,636 
$ 
35,112 
December 31, 2024
December 31, 2023
(a) 
Includes finance leases. See Note 26.
Property, plant and equipment includes construction in progress of $1.78 billion and $1.40 billion at December 31, 2024 and 
2023, respectively, which primarily relates to capital projects at our refineries and midstream facilities.
16. Goodwill and Intangibles 
Goodwill
MPC annually evaluates goodwill for impairment as of November 30, as well as whenever events or changes in circumstances 
indicate it is more likely than not that the fair value of a reporting unit with goodwill is less than its carrying amount. There were 
no impairments of goodwill required based on our annual test of goodwill in 2024 and 2023.
At December 31, 2024, MPC had four reporting units with goodwill totaling approximately $8.24 billion. For the annual 
impairment assessment as of November 30, 2024, management performed only a qualitative assessment for three reporting 
units as we determined it was more likely than not that the fair value of the reporting units exceeded the carrying value. A 
quantitative assessment was performed for the remaining reporting unit, which resulted in the fair value of the reporting unit 
exceeding its carrying value by greater than 10 percent.
105

The changes in the carrying amount of goodwill for 2024 were as follows:
(Millions of dollars)
Refining & 
Marketing
Midstream
Total
Balance as of December 31, 2022
$ 
561 
$ 
7,683 
$ 
8,244 
Impairment losses
 
— 
 
— 
 
— 
Balance as of December 31, 2023
 
561 
 
7,683 
 
8,244 
Impairment losses
 
— 
 
— 
 
— 
Balance as of December 31, 2024
$ 
561 
$ 
7,683 
$ 
8,244 
Gross goodwill as of December 31, 2024
$ 
6,141 
$ 
10,824 
$ 
16,965 
Accumulated impairment losses
 
(5,580) 
 
(3,141) 
 
(8,721) 
Balance as of December 31, 2024
$ 
561 
$ 
7,683 
$ 
8,244 
Intangible Assets
Our definite lived intangible assets as of December 31, 2024 and 2023 are as shown below.
December 31, 2024
December 31, 2023
(Millions of dollars)
Gross
Accumulated 
Amortization
Net
Gross
Accumulated 
Amortization
Net
Customer contracts and 
relationships
$ 
4,111 
$ 
2,446 
$ 
1,665 
$ 
3,838 
$ 
2,132 
$ 
1,706 
Brand rights and tradenames
 
101 
 
89 
 
12 
 
101 
 
79 
 
22 
Royalty agreements
 
141 
 
120 
 
21 
 
173 
 
142 
 
31 
Other
 
36 
 
31 
 
5 
 
41 
 
35 
 
6 
Total
$ 
4,389 
$ 
2,686 
$ 
1,703 
$ 
4,153 
$ 
2,388 
$ 
1,765 
At both December 31, 2024 and 2023, we had indefinite lived intangible assets of $71 million, which are emission allowance 
credits.
Amortization expense was $266 million in 2024 and $316 million in 2023. Estimated future amortization expense for the next five 
years related to the intangible assets at December 31, 2024 is as follows:
(Millions of dollars)
2025
$ 
250 
2026
 
230 
2027
 
202 
2028
 
180 
2029
 
16 
 
17. Fair Value Measurements 
Fair Values – Recurring
The following tables present assets and liabilities accounted for at fair value on a recurring basis as of December 31, 2024 and 
2023 by fair value hierarchy level. We have elected to offset the fair value amounts recognized for multiple derivative contracts 
executed with the same counterparty, including any related cash collateral as shown below; however, fair value amounts by 
hierarchy level are presented on a gross basis in the following tables.
106

December 31, 2024
Fair Value Hierarchy
(Millions of dollars)
Level 1
Level 2
Level 3
Netting and 
Collateral(a)
Net Carrying 
Value on Balance 
Sheet(b)
Collateral 
Pledged Not 
Offset
Assets:
Commodity contracts
$ 139 
$ 
— 
$ 
— 
$ 
(132) 
$ 
7 
$ 
16 
Liabilities:
Commodity contracts
$ 144 
$ 
— 
$ 
— 
$ 
(144) 
$ 
— 
$ 
— 
Embedded derivatives in commodity contracts
 
— 
 
— 
 
58 
 
— 
 
58 
 
— 
December 31, 2023
Fair Value Hierarchy
(Millions of dollars)
Level 1
Level 2
Level 3
Netting and 
Collateral(a)
Net Carrying 
Value on Balance 
Sheet(b)
Collateral 
Pledged Not 
Offset
Assets:
Commodity contracts
$ 244 
$ 
— 
$ 
— 
$ 
(220) 
$ 
24 
$ 
73 
Liabilities:
Commodity contracts
$ 249 
$ 
— 
$ 
— 
$ 
(249) 
$ 
— 
$ 
— 
Embedded derivatives in commodity contracts
 
— 
 
— 
 
61 
 
— 
 
61 
 
— 
(a) 
Represents the impact of netting assets, liabilities and cash collateral when a legal right of offset exists. As of December 31, 2024, cash 
collateral of $12 million was netted with mark-to-market derivative liabilities. As of December 31, 2023, cash collateral of $29 million was 
netted with mark-to-market derivative liabilities.
(b) 
We have no derivative contracts which are subject to master netting arrangements reflected gross on the balance sheet.
Level 3 instruments relate to an embedded derivative liability for a natural gas purchase commitment embedded in a keep-whole 
processing agreement. The fair value calculation for these Level 3 instruments at December 31, 2024 used significant 
unobservable inputs including: (1) NGL prices interpolated and extrapolated due to inactive markets ranging from $0.65 to $1.54 
per gallon with a weighted average of $0.81 per gallon and (2) a 100 percent probability of renewable for the five-year term of the 
natural gas purchase agreement and related keep-whole processing agreement. Increases or decreases in the fractionation 
spread result in an increase or decrease in the fair value of the embedded derivative liability. 
The following is a reconciliation of the beginning and ending balances recorded for net liabilities classified as Level 3 in the fair 
value hierarchy.
(Millions of dollars)
2024
2023
Beginning balance
$ 
61 
$ 
61 
Unrealized and realized loss included in net income(a)
 
10 
 
11 
Settlements of derivative instruments
 
(13) 
 
(11) 
Ending balance
$ 
58 
$ 
61 
The amount of total loss for the period included in earnings attributable to the change in 
unrealized loss relating to liabilities still held at the end of period(a):
$ 
7 
$ 
9 
(a) 
The gain/loss is included in cost of revenues on the consolidated statements of income.
See Note 18 for the income statement impacts of our derivative instruments.
Fair Values – Non-recurring
Non-recurring fair value measurements and disclosures in 2024 relate to acquisitions and other transactions as discussed in 
Note 14.
Non-recurring fair value measurements and disclosures in 2023 relate primarily to the acquisition of the remaining interest in 
Torñado as discussed in Note 14. 
Non-recurring fair value measurements and disclosures in 2022 relate primarily to sales-type leases discussed in Note 26 and 
the Martinez Renewables LLC equity method investment discussed in Note 14. The net investment in sales-type leases was 
recorded at the estimated fair value of the underlying leased assets at contract modification date. The leased assets were valued 
107

using a cost method valuation approach which utilizes Level 3 inputs. The fair value of the Martinez Renewables LLC equity 
method investment was primarily based on the cash consideration received from Neste for their 50 percent ownership.
Fair Values – Reported
We believe the carrying value of our other financial instruments, including cash and cash equivalents, receivables, accounts 
payable and certain accrued liabilities, approximate fair value. Our fair value assessment incorporates a variety of 
considerations, including the short-term duration of the instruments and the expected insignificance of bad debt expense, which 
includes an evaluation of counterparty credit risk. The borrowings under our revolving credit facilities, which include variable 
interest rates, approximate fair value. The fair value of our long-term debt is based on prices from recent trade activity and is 
categorized in level 3 of the fair value hierarchy. The carrying and fair values of our debt were approximately $26.9 billion and 
$25.0 billion at December 31, 2024, respectively, and approximately $27.0 billion and $25.5 billion at December 31, 2023, 
respectively. These carrying and fair values of our debt exclude the unamortized issuance costs, which are netted against our 
total debt.
18. Derivatives 
For further information regarding the fair value measurement of derivative instruments, including any effect of master netting 
agreements or collateral, see Note 17. See Note 2 for a discussion of the types of derivatives we use and the reasons for them. 
We do not designate any of our commodity derivative instruments as hedges for accounting purposes.
The following table presents the fair value of derivative instruments as of December 31, 2024 and 2023 and the line items in the 
consolidated balance sheets in which the fair values are reflected. The fair value amounts below are presented on a gross basis 
and do not reflect the netting of asset and liability positions permitted under the terms of our master netting arrangements 
including cash collateral on deposit with, or received from, brokers. We offset the recognized fair value amounts for multiple 
derivative instruments executed with the same counterparty in our financial statements when a legal right of offset exists. As a 
result, the asset and liability amounts below will not agree with the amounts presented in our consolidated balance sheets.
(Millions of dollars)
December 31, 2024
December 31, 2023
Balance Sheet Location
Asset
Liability
Asset
Liability
Commodity derivatives
Other current assets
$ 
139 
$ 
144 
$ 
244 
$ 
249 
Other current liabilities(a)
 
— 
 
10 
 
— 
 
11 
Deferred credits and other liabilities(a)
 
— 
 
48 
 
— 
 
50 
(a) 
Includes embedded derivatives.
The table below summarizes open commodity derivative contracts for crude oil, refined products, blending products and soybean 
oil as of December 31, 2024. 
Percentage of contracts 
that expire next quarter
Position
(Units in thousands of barrels)
Long
Short
Exchange-traded(a)
Crude oil
54.5%
 
47,351 
 
43,785 
Refined products
82.3%
 
18,086 
 
21,973 
Blending products
93.5%
 
6,061 
 
6,121 
Soybean oil
97.9%
 
2,295 
 
2,888 
(a) 
Included in exchange-traded are spread contracts in thousands of barrels: Crude oil - 15,975 long and 15,455 short; Refined products - 545 
long and 325 short and Blending products - 158 long. There are no spread contracts for soybean oil.
The following table summarizes the effect of all commodity derivative instruments in our consolidated statements of income:
(Millions of dollars)
Gain (Loss)
Income Statement Location
2024
2023
2022
Sales and other operating revenues
$ 
1 
$ 
7 
$ 
— 
Cost of revenues
 
(94) 
 
(15) 
 
(58) 
Other income
 
2 
 
2 
 
— 
Total
$ 
(91) 
$ 
(6) 
$ 
(58) 
108

19. Debt 
Our outstanding borrowings at December 31, 2024 and 2023 consisted of the following:
Marathon Petroleum Corporation:
Senior notes
$ 
5,699 
$ 
6,449 
Notes payable
 
— 
 
1 
MARAD debt
 
174 
 
— 
Finance lease obligations
 
718 
 
464 
Total
 
6,591 
 
6,914 
MPLX LP:
Senior notes
 
21,200 
 
20,700 
Finance lease obligations
 
6 
 
6 
Total
 
21,206 
 
20,706 
Total debt
 
27,797 
 
27,620 
Unamortized debt issuance costs
 
(142) 
 
(141) 
Unamortized discount, net of unamortized premium
 
(174) 
 
(196) 
Amounts due within one year
 
(3,049) 
 
(1,954) 
Total long-term debt due after one year
$ 
24,432 
$ 
25,329 
(Millions of dollars)
December 31,
2024
December 31,
2023
Commercial Paper
We have in place a commercial paper program that allows us to have a maximum of $2.0 billion in commercial paper 
outstanding, with maturities up to 397 days from the date of issuance. We do not intend to have outstanding commercial paper 
borrowings in excess of available capacity under the MPC Credit Agreement.
MPC Senior Notes
Senior notes, 3.625% due September 2024
 
— 
 
750 
Senior notes, 4.700% due May 2025
 
1,250 
 
1,250 
Senior notes, 5.125% due December 2026
 
719 
 
719 
Senior notes, 3.800% due April 2028
 
496 
 
496 
Senior notes, 6.500% due March 2041
 
1,250 
 
1,250 
Senior notes, 4.750% due September 2044
 
800 
 
800 
Senior notes, 5.850% due December 2045
 
250 
 
250 
Senior notes, 4.500% due April 2048
 
498 
 
498 
Andeavor senior notes, 3.800% - 5.125% due 2026 – 2048
 
36 
 
36 
Senior notes, 5.000%, due September 2054
 
400 
 
400 
Total
$ 
5,699 
$ 
6,449 
 
December 31,
(Millions of dollars)
2024
2023
2024 Activity
On September 16, 2024, we repaid the $750 million outstanding principal amount of 3.625 percent senior notes due September 
2024 at maturity using cash on hand. 
Interest on each series of senior notes is payable semi-annually in arrears. The MPC senior notes are unsecured and 
unsubordinated obligations of MPC and rank equally with all of MPC’s other existing and future unsecured and unsubordinated 
indebtedness. The MPC senior notes are non-recourse to our subsidiaries and structurally subordinated to the indebtedness of 
our subsidiaries, including the outstanding indebtedness of Andeavor and MPLX. The Andeavor senior notes are unsecured, 
unsubordinated obligations of Andeavor and are non-recourse to MPC and any of MPC’s subsidiaries other than Andeavor.
109

MARAD Debt
During the fourth quarter of 2024, MPC purchased the remaining 50 percent interest in Coastal Holdings from our joint venture 
partner and assumed $174 million in aggregate principal amount of MARAD Debt obligations issued by Blue Water Holdings, a 
subsidiary of Marathon Coastal Holdings LLC, that owns three 750 series ATB Vessels. Blue Water Holdings remains the primary 
obligor under the MARAD Debt. The U.S. Department of Transportation Maritime Administration (“MARAD”) has guaranteed 
certain of Blue Water Holdings’ obligations under the MARAD Debt and Blue Water Holdings has agreed to reimburse MARAD 
for any payments it makes with respect to the MARAD Debt pursuant to the guaranty. Blue Water Holdings’ reimbursement 
obligations to MARAD with respect to the MARAD Debt are secured by a mortgage on the three ATB Vessels and certain related 
rights and assets and are guaranteed by MPC. 
The MARAD Debt is comprised of $55 million aggregate principal amount of 3.432% bonds due 2036, $57 million aggregate 
principal amount of 3.477% bonds due 2037 and $62 million aggregate principal amount of 3.609% bonds due 2038. The 
agreements that govern the MARAD Debt, including the indenture, security agreement and guarantee contain customary 
representations and warranties as well as affirmative and negative covenants, events of defaults and other provisions, we 
believe are typical for U.S. government guaranteed obligations of this type. As of December 31, 2024, we were in compliance 
with the covenants contained in the MARAD Debt documents.
MPLX Senior Notes
Senior notes, 4.875% due December 2024
$ 
— 
$ 
1,149 
Senior notes, 4.000% due February 2025
 
500 
 
500 
Senior notes, 4.875% due June 2025
 
1,189 
 
1,189 
MarkWest senior notes, 4.875% due 2024 – 2025
 
11 
 
12 
Senior notes, 1.750% due March 2026
 
1,500 
 
1,500 
Senior notes, 4.125% due March 2027
 
1,250 
 
1,250 
Senior notes, 4.250% due December 2027
 
732 
 
732 
Senior notes, 4.000% due March 2028
 
1,250 
 
1,250 
Senior notes, 4.800% due February 2029
 
750 
 
750 
Senior notes, 2.650% due August 2030
 
1,500 
 
1,500 
Senior notes, 4.950% due September 2032
 
1,000 
 
1,000 
Senior notes, 5.000% due March 2033
 
1,100 
 
1,100 
Senior notes, 5.500% due June 2034
 
1,650 
 
— 
Senior notes, 4.500% due April 2038
 
1,750 
 
1,750 
Senior notes, 5.200% due March 2047
 
1,000 
 
1,000 
Senior notes, 5.200% due December 2047
 
487 
 
487 
ANDX senior notes, 4.250% - 5.200% due 2027 – 2047
 
31 
 
31 
Senior notes, 4.700% due April 2048
 
1,500 
 
1,500 
Senior notes, 5.500% due February 2049
 
1,500 
 
1,500 
Senior notes, 4.950% due March 2052
 
1,500 
 
1,500 
Senior notes, 5.650% due March 2053
 
500 
 
500 
Senior notes, 4.900% due April 2058
 
500 
 
500 
Total
$ 
21,200 
$ 
20,700 
 
December 31,
(Millions of dollars)
2024
2023
2024 Activity
On May 20, 2024, MPLX issued $1.65 billion aggregate principal amount of 5.50 percent senior notes due June 2034 (the “2034 
Senior Notes”) in an underwritten public offering. On December 1, 2024, MPLX used $1,150 million of the net proceeds from the 
issuance of the 2034 Senior Notes to repay all of (i) MPLX's outstanding $1,149 million aggregate principal amount of 4.875 
percent senior notes due December 2024 and (ii) MarkWest's outstanding $1 million aggregate principal amount of 4.875 percent 
senior notes due December 2024. On February 18, 2025, MPLX used the remaining net proceeds from the issuance of the 2034 
Senior Notes to repay all of MPLX's outstanding $500 million aggregate principal amount of 4.000 percent senior notes due 
February 2025.
110

2023 Activity
On February 9, 2023, MPLX issued $1.6 billion aggregate principal amount of senior notes in a public offering, consisting of 
$1.1 billion aggregate principal amount of 5.00 percent senior notes due March 2033 and $500 million aggregate principal 
amount of 5.65 percent senior notes due March 2053. On February 15, 2023, MPLX used $600 million of the net proceeds to 
redeem all of the outstanding Series B preferred units. On March 13, 2023, MPLX used the remaining proceeds to redeem all of 
MPLX’s and MarkWest’s $1.0 billion aggregate principal amount of 4.50 percent senior notes due July 2023.The redemption 
resulted in a loss on extinguishment of debt of $9 million due to the immediate expense recognition of unamortized debt discount 
and issuance costs.
Interest on each series of MPLX fixed rate senior notes is payable semi-annually in arrears. The MPLX senior notes are 
unsecured, unsubordinated obligations of MPLX and are non-recourse to MPC and its subsidiaries other than MPLX and MPLX 
GP LLC, as the general partner of MPLX. The MPLX senior notes are non-recourse to MPLX’s subsidiaries and structurally 
subordinated to the indebtedness of MPLX’s subsidiaries.
Schedule of Maturities
Principal maturities of long-term debt, excluding finance lease obligations, as of December 31, 2024 for the next five years are as 
follows:
(Millions of dollars)
2025
$ 
2,964 
2026
 
2,263 
2027
 
2,014 
2028
 
1,764 
2029
 
764 
Available Capacity under our Facilities as of December 31, 2024 
(Millions of dollars)
Total
Capacity
Outstanding
Borrowings
Outstanding
Letters
of Credit
Available
Capacity
Weighted
Average
Interest 
Rate
Expiration
MPC, excluding MPLX
MPC bank revolving credit facility
$ 5,000 
$ 
— 
$ 
1 
$ 4,999 
 — 
July 2027
MPC trade receivables securitization facility(a)  
100 
 
— 
 
— 
 
100 
 — 
September 2027
MPLX
MPLX bank revolving credit facility
 
2,000 
 
— 
 
— 
 
2,000 
 — 
July 2027
(a) 
The committed borrowing and letter of credit issuance capacity under the trade receivables securitization facility is $100 million. In addition, 
the facility allows for the issuance of letters of credit in excess of the committed capacity at the discretion of the issuing banks.
MPC Bank Revolving Credit Facility
MPC’s credit agreement (the “MPC Credit Agreement”) matures in July 2027 and, provides for a $5.0 billion unsecured revolving 
credit facility and letter of credit issuing capacity under the facility of up to $2.2 billion. Letters of credit issuing capacity is 
included in, not in addition to, the $5.0 billion borrowing capacity.
MPC has an option under the MPC Credit Agreement to increase the aggregate commitments by up to an additional $1.0 billion, 
subject to, among other conditions, the consent of the lenders whose commitments would be increased. In addition, the maturity 
date may be extended, for up to two additional one year periods, subject to, among other conditions, the approval of lenders 
holding the majority of the commitments then outstanding, provided that the commitments of any non-consenting lenders will 
terminate on the then-effective maturity date. The MPC Credit Agreement includes sub-facilities for swing-line loans of up to $250 
million and letters of credit of up to $2.2 billion (which may be increased to up to $3.0 billion upon receipt of additional letter of 
credit issuing commitments).
Borrowings under the MPC Credit Agreement bear interest, at our election, at either the Adjusted Term SOFR or the Alternate 
Base Rate, both as defined in the MPC Credit Agreement, plus an applicable margin. We are charged various fees and 
expenses in connection with the agreement, including administrative agent fees, commitment fees on the unused portion of the 
commitments and fees with respect to issued and outstanding letters of credit. The applicable margins to the benchmark interest 
rates and the commitment fees payable under the MPC Credit Agreement fluctuate based on changes, if any, to our credit 
ratings.
111

The MPC Credit Agreement contains certain representations and warranties, affirmative and restrictive covenants and events of 
default that we consider to be usual and customary for arrangements of this type, including a financial covenant that requires us 
to maintain a ratio of Consolidated Net Debt to Total Capitalization, each as defined in the MPC Credit Agreement, of no greater 
than 0.65 to 1.00 as of the last day of each fiscal quarter. The covenants also restrict, among other things, our ability and/or the 
ability of certain of our subsidiaries to incur debt, create liens on assets or enter into transactions with affiliates. As of 
December 31, 2024, we were in compliance with the covenants contained in the MPC Credit Agreement. 
Trade Receivables Securitization Facility 
On September 30, 2021, we entered into a Loan and Security Agreement and related documentation with a group of lenders 
providing for a new trade receivables securitization facility having $100 million of committed borrowing and letter of credit 
issuance capacity and uncommitted borrowing and letter of credit issuance capacity that can be extended at the discretion of the 
lenders, provided that at no time may outstanding borrowings and letters of credit issued under the facility exceed the balance of 
eligible trade receivables (as calculated in accordance with the Loan and Security Agreement) that are pledged as collateral 
under the facility. In September 2024, the trade receivables securitization facility was amended to, among other things, extend its 
term until September 30, 2027.
The trade receivables facility consists of certain of our wholly owned subsidiaries (“Originators”) selling or contributing on an on-
going basis all of the trade receivables generated by them (the “Pool Receivables”), together with all related security and 
interests in the proceeds thereof, without recourse, to another wholly owned, bankruptcy-remote special purpose subsidiary, 
MPC Trade Receivables Company I LLC (“TRC”), in exchange for a combination of cash, equity and/or borrowings under a 
subordinated note issued by TRC to one or more of the Originators. TRC may request borrowings and extensions of credit under 
the Loan and Security Agreement for up to the lesser of the maximum capacity under the facility or the eligible trade receivables 
balance of the Pool Receivables. TRC and each of the Originators have granted a security interest in all of their rights, title and 
interests in and to the Pool Receivables, together with all related security and interests in the proceeds thereof, to the lenders to 
secure the performance of TRC’s and the Originators’ payment and other obligations under the facility. In addition, MPC has 
issued a performance guaranty in favor of the lenders guaranteeing the performance by TRC and the Originators of their 
obligations under the facility.
To the extent that TRC retains an ownership interest in the Pool Receivables, such interest will be included in our consolidated 
financial statements solely as a result of the consolidation of the financial statements of TRC with those of MPC. The receivables 
sold or contributed to TRC are available first and foremost to satisfy claims of the creditors of TRC and are not available to satisfy 
the claims of creditors of MPC. TRC has granted a security interest in all of its assets to the lenders to secure its obligations 
under the Loan and Security Agreement.
TRC pays floating-rate interest charges and usage fees on amounts outstanding under the trade receivables facility, if any, 
unused fees on the portion of unused commitments and certain other fees related to the administration of the facility and letters 
of credit that are issued and outstanding under the trade receivables facility. 
The Loan and Security Agreement and other documents comprising the facility contain representations and covenants that we 
consider usual and customary for arrangements of this type. Trade receivables are subject to customary criteria, limits and 
reserves before being deemed to be eligible receivables that count towards the borrowing base under the trade receivables 
facility. In addition, the lender’s commitments to extend loans and credits under the facility are subject to termination, and TRC 
may be subject to default fees, upon the occurrence of certain events of default that are included in the Loan and Security 
Agreement and other facility documentation, all of which we consider to be usual and customary for arrangements of this type. 
As of December 31, 2024, we were in compliance with the covenants contained in the Loan and Security Agreement and other 
facility documentation.
MPLX Bank Revolving Credit Facility 
MPLX’s credit agreement (the “MPLX Credit Agreement”) matures in July 2027 and, among other things, provides for a 
$2.0 billion unsecured revolving credit facility and letter of credit issuing capacity under the facility of up to $150 million. Letters of 
credit issuing capacity is included in, not in addition to, the $2.0 billion borrowing capacity. 
The borrowing capacity under the MPLX Credit Agreement may be increased by up to an additional $1.0 billion, subject to certain 
conditions, including the consent of the lenders whose commitments would increase. In addition, the maturity date may be 
extended, for up to two additional one year periods, subject to, among other conditions, the approval of lenders holding the 
majority of the commitments then outstanding, provided that the commitments of any non-consenting lenders will terminate on 
the then-effective maturity date.
Borrowings under the MPLX Credit Agreement bear interest, at MPLX’s election, at either the Adjusted Term SOFR or the 
Alternate Base Rate, both as defined in the MPLX Credit Agreement, plus an applicable margin. MPLX is charged various fees 
and expenses in connection with the agreement, including administrative agent fees, commitment fees on the unused portion of 
the commitments and fees with respect to issued and outstanding letters of credit. The applicable margins to the benchmark 
interest rates and the commitment fees payable under the MPLX Credit Agreement fluctuate based on changes, if any, to 
MPLX’s credit ratings. 
112

The MPLX Credit Agreement contains certain representations and warranties, affirmative and restrictive covenants and events of 
default that we consider to be usual and customary for an agreement of this type, including a financial covenant that requires 
MPLX to maintain a ratio of Consolidated Total Debt as of the end of each fiscal quarter to Consolidated EBITDA, both as 
defined in the MPLX Credit Agreement, for the prior four fiscal quarters of no greater than 5.0 to 1.0 (or 5.5 to 1.0 for up to two 
fiscal quarters following certain acquisitions). Consolidated EBITDA is subject to adjustments for certain acquisitions completed 
and capital projects undertaken during the relevant period. The covenants also restrict, among other things, MPLX’s ability and/or 
the ability of certain of its subsidiaries to incur debt, create liens on assets and enter into transactions with affiliates. As of 
December 31, 2024, MPLX was in compliance with the covenants contained in the MPLX Credit Agreement.
20. Revenue
The following table presents our revenues from external customers disaggregated by segment and product line:
(Millions of dollars)
2024
2023
2022
Refining & Marketing
Refined products
$ 
122,429 
$ 
132,675 
$ 
160,737 
Crude oil
 
7,298 
 
7,423 
 
8,962 
Services and other
 
1,861 
 
1,737 
 
1,762 
Total revenues from external customers
 
131,588 
 
141,835 
 
171,461 
Midstream
Refined products
 
1,668 
 
1,675 
 
2,219 
Services and other(a)
 
3,529 
 
3,236 
 
3,147 
Total revenues from external customers
 
5,197 
 
4,911 
 
5,366 
Renewable Diesel
Refined products
 
2,073 
 
1,628 
 
625 
Services and other
 
6 
 
5 
 
1 
Total revenues from external customers
 
2,079 
 
1,633 
 
626 
Sales and other operating revenues
$ 
138,864 
$ 
148,379 
$ 
177,453 
(a) 
Includes sales-type lease revenue. See Note 26.
We do not disclose information on the future performance obligations for any contract with expected duration of one year or less 
at inception. As of December 31, 2024, we do not have future performance obligations that are material to future periods. 
Receivables
On the accompanying consolidated balance sheets, receivables, less allowance for doubtful accounts primarily consists of 
customer receivables. Significant, non-customer balances included in our receivables at December 31, 2024 include matching 
buy/sell receivables of $4.3 billion. 
113

21. Supplemental Cash Flow Information
Net cash provided by operating activities included:
Interest paid (net of amounts capitalized)
$ 
1,247 
$ 
1,200 
$ 
1,060 
Income taxes paid to taxing authorities(a)
 
732 
 
2,751 
 
4,869 
Cash paid for amounts included in the measurement of lease 
liabilities
Payments on operating leases
 
532 
 
493 
 
498 
Interest payments under finance lease obligations
 
25 
 
25 
 
24 
Net cash provided by financing activities included:
Principal payments under finance lease obligations
 
82 
 
79 
 
79 
Non-cash investing and financing activities:
Right of use assets obtained in exchange for new operating lease 
obligations
 
637 
 
465 
 
367 
Right of use assets obtained in exchange for new finance lease 
obligations
 
302 
 
21 
 
60 
Contribution of assets(b)
 
— 
 
— 
 
818 
Book value of equity method investment(c)
 
50 
 
311 
 
150 
(Millions of dollars)
2024
2023
2022
(a) 
2024 includes $565 million paid to third parties for transferable tax credits.
(b) 
Represents the book value of property, plant and equipment, inventory and working capital contributed by MPC to Martinez Renewables 
LLC. See Note 14 for additional information.
(c)
2024 represents the book value of Coastal Holdings prior to MPC buying out the remaining 50 percent interest from our joint venture 
partner. 2023 represents the book value of MPLX’s equity method investment in Torñado, prior to MPLX buying out the remaining interest in 
this entity. 2022 represents the book value of MPC’s equity method investment in Watson Cogeneration Company and Tanker Holdings of 
$25 million and $125 million, respectively, prior to MPC buying out the remaining interest in these entities. See Note 14 for additional 
information.
The consolidated statements of cash flows exclude changes to the consolidated balance sheets that did not affect cash. The 
following is a reconciliation of additions to property, plant and equipment to total capital expenditures:
Additions to property, plant and equipment per the consolidated 
statements of cash flows
$ 
2,533 
$ 
1,890 
$ 
2,420 
Increase (decrease) in capital accruals
 
34 
 
184 
 
(37) 
Total capital expenditures
$ 
2,567 
$ 
2,074 
$ 
2,383 
(Millions of dollars)
2024
2023
2022
22. Other Current Liabilities
The following summarizes the components of other current liabilities:
December 31,
(Millions of dollars)
2024
2023
Environmental credits liability
$ 
422 
$ 
778 
Accrued interest payable
 
314 
 
316 
Other current liabilities
 
419 
 
551 
Total other current liabilities
$ 
1,155 
$ 
1,645 
114

23. Accumulated Other Comprehensive Income (Loss) 
The following table shows the changes in accumulated other comprehensive income (loss) by component. Amounts in 
parentheses indicate debits.
(Millions of dollars)
Pension 
Benefits
Other 
Benefits
Other
Total
Balance as of December 31, 2021
$ 
(117) 
$ 
49 
$ 
1 
$ 
(67) 
Other comprehensive income (loss) before reclassifications, net 
of tax of $11
 
(70) 
 
129 
 
(1) 
 
58 
Amounts reclassified from accumulated other comprehensive 
loss:
Amortization of prior service credit(a)
 
(45) 
 
(22) 
 
— 
 
(67) 
Amortization of actuarial loss(a)
 
4 
 
6 
 
— 
 
10 
Settlement loss(a)
 
79 
 
— 
 
— 
 
79 
Tax effect
 
(14) 
 
3 
 
— 
 
(11) 
Other comprehensive income (loss)
 
(46) 
 
116 
 
(1) 
 
69 
Balance as of December 31, 2022
 
(163) 
 
165 
 
— 
 
2 
Other comprehensive income (loss) before reclassifications, net 
of tax of $(22)
 
(60) 
 
(21) 
 
2 
 
(79) 
Amounts reclassified from accumulated other comprehensive 
loss:
Amortization of prior service credit(a)
 
(45) 
 
(22) 
 
— 
 
(67) 
Amortization of actuarial gain(a)
 
(5) 
 
— 
 
— 
 
(5) 
Settlement gain(a)
 
(1) 
 
— 
 
— 
 
(1) 
Other
 
— 
 
— 
 
(1) 
 
(1) 
Tax effect
 
13 
 
7 
 
— 
 
20 
Other comprehensive income (loss)
 
(98) 
 
(36) 
 
1 
 
(133) 
Balance as of December 31, 2023
 
(261) 
 
129 
 
1 
 
(131) 
Other comprehensive income (loss) before reclassifications, net 
of tax of $16
 
44 
 
10 
 
(2) 
 
52 
Amounts reclassified from accumulated other comprehensive 
loss:
Amortization of prior service credit(a)
 
(33) 
 
(22) 
 
— 
 
(55) 
Amortization of actuarial loss(a)
 
6 
 
— 
 
— 
 
6 
Settlement loss(a)
 
3 
 
— 
 
— 
 
3 
Tax effect
 
6 
 
5 
 
— 
 
11 
Other comprehensive income (loss)
 
26 
 
(7) 
 
(2) 
 
17 
Balance as of December 31, 2024
$ 
(235) 
$ 
122 
$ 
(1) 
$ 
(114) 
(a) 
These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost. See Note 24.
24. Pension and Other Postretirement Benefits 
We have two noncontributory defined benefit pension plans. One plan is frozen and covered certain employees of our former 
Speedway LLC subsidiary. The other plan is active and covers substantially all of our employees. Benefits under these plans are 
based on a now frozen final average pay type of benefit based on age, years of service and final average pensionable earnings, 
and a cash balance type of benefit. The years of service component for the final average pay type of benefit was frozen as of 
December 31, 2009, and certain of the pensionable earnings components were frozen as of December 31, 2012. Benefits for the 
cash balance type of benefit began on January 1, 2010 for our continuing active plan, and began on January 1, 2016 for our 
frozen plan, and are based on a cash balance formula with an annual percentage of eligible pay credited based upon age and 
years of service or at a flat rate of eligible pay, depending on covered employee group. Substantially all of our employees also 
accrue benefits under a defined contribution plan.
 
(Millions of dollars)
2024
2023
2022
Cash balance weighted average interest crediting rates
 4.56 %
 3.57 %
 3.00 %
115

We also have other postretirement benefits covering most employees. Retiree health care benefits are provided through 
comprehensive hospital, surgical, major medical benefit, prescription drug and related health benefit provisions subject to various 
cost sharing features. Retiree life insurance benefits are provided to a closed group of retirees. Other postretirement benefits are 
not funded in advance. 
In connection with the Andeavor acquisition, we assumed a number of additional qualified and nonqualified noncontributory 
benefit pension plans, covering substantially all former Andeavor employees. Benefits under these plans are determined based 
on final average compensation and years of service through December 31, 2010 and a cash balance formula for service 
beginning January 1, 2011. These plans were frozen as of December 31, 2018. Further, as of December 31, 2019, the qualified 
plans were merged with our existing qualified plans in which the actuarial assumptions were materially the same between the 
plans. We also assumed a number of additional postretirement benefits covering eligible employees. These benefits were 
merged with our existing benefits beginning January 1, 2019. 
Obligations and Funded Status 
The accumulated benefit obligation for all defined benefit pension plans was $2,579 million and $2,441 million as of 
December 31, 2024 and 2023.
The following summarizes the projected benefit obligations and funded status for our defined benefit pension and other 
postretirement plans:
(Millions of dollars)
2024
2023
2024
2023
Benefit obligations at January 1
$ 
2,563 
$ 
2,359 
$ 
679 
$ 
650 
Service cost
 
219 
 
195 
 
21 
 
18 
Interest cost
 
122 
 
116 
 
32 
 
31 
Actuarial (gain) loss
 
(32) 
 
184 
 
(14) 
 
31 
Benefits paid
 
(187) 
 
(291) 
 
(49) 
 
(51) 
Benefit obligations at December 31
 
2,685 
 
2,563 
 
669 
 
679 
Fair value of plan assets at January 1
 
2,082 
 
1,838 
 
— 
 
— 
Actual return on plan assets
 
161 
 
266 
 
— 
 
— 
Employer contributions
 
102 
 
269 
 
49 
 
51 
Benefits paid from plan assets
 
(187) 
 
(291) 
 
(49) 
 
(51) 
Fair value of plan assets at December 31
 
2,158 
 
2,082 
 
— 
 
— 
Funded status at December 31
$ 
(527) 
$ 
(481) 
$ 
(669) 
$ 
(679) 
 
Pension Benefits
Other Benefits
Amounts recognized in the consolidated balance sheet for our pension and other postretirement benefit plans at December 31 
include:
 
Pension Benefits
Other Benefits
(Millions of dollars)
2024
2023
2024
2023
Noncurrent assets
$ 
22 
$ 
— 
$ 
— 
$ 
— 
Current liabilities
 
(11) 
 
(8) 
 
(50) 
 
(50) 
Noncurrent liabilities
 
(538) 
 
(473) 
 
(619) 
 
(629) 
Accrued benefit cost
$ 
(527) 
$ 
(481) 
$ 
(669) 
$ 
(679) 
Included in accumulated other comprehensive loss at December 31 were the following before-tax amounts that had not been 
recognized in net periodic benefit cost:
 
Pension Benefits
Other Benefits
(Millions of dollars)
2024
2023
2024
2023
Net actuarial loss
$ 
404 
$ 
467 
$ 
36 
$ 
50 
Prior service credit
 
(36) 
 
(69) 
 
(181) 
 
(202) 
116

Amounts exclude those related to LOOP and Explorer, equity method investees with defined benefit pension and postretirement 
plans for which net losses (gains) of $(7) million and $4 million were recorded in accumulated other comprehensive income (loss) 
in 2024, reflecting our ownership share.
Components of Net Periodic Benefit Cost and Other Comprehensive (Income) Loss 
The following summarizes the net periodic benefit costs and the amounts recognized as other comprehensive loss (pretax) for 
our defined benefit pension and other postretirement plans.
Service cost
$ 
227 
$ 
201 
$ 
230 
$ 
21 
$ 
18 
$ 
26 
Interest cost
 
122 
 
116 
 
102 
 
32 
 
31 
 
21 
Expected return on plan assets
 
(146) 
 
(163) 
 
(142) 
 
— 
 
— 
 
— 
Amortization of prior service credit
 
(33) 
 
(45) 
 
(45) 
 
(22) 
 
(22) 
 
(22) 
Amortization of actuarial (gain) loss
 
6 
 
(5) 
 
4 
 
— 
 
— 
 
6 
Settlement (gain) loss
 
3 
 
(1) 
 
79 
 
— 
 
— 
 
— 
Net periodic benefit cost(a)
$ 
179 
$ 
103 
$ 
228 
$ 
31 
$ 
27 
$ 
31 
Actuarial (gain) loss
$ 
(54) 
$ 
75 
$ 
109 
$ 
(15) 
$ 
31 
$ 
(167) 
Amortization of actuarial (gain) loss
 
(9) 
 
6 
 
(83) 
 
— 
 
— 
 
(6) 
Amortization of prior service credit
 
33 
 
45 
 
45 
 
22 
 
22 
 
22 
Total recognized in other comprehensive 
(income) loss
$ 
(30) 
$ 
126 
$ 
71 
$ 
7 
$ 
53 
$ 
(151) 
Total recognized in net periodic benefit 
cost and other comprehensive (income) 
loss
$ 
149 
$ 
229 
$ 
299 
$ 
38 
$ 
80 
$ 
(120) 
 
Pension Benefits
Other Benefits
(Millions of dollars)
2024
2023
2022
2024
2023
2022
(a) 
Net periodic benefit cost reflects a calculated market-related value of plan assets which recognizes changes in fair value over three years.
The components of net periodic benefit cost, other than the service cost component, are included in net interest and other 
financial costs on the consolidated statements of income.
For certain of our pension plans, lump sum payments to employees retiring in 2024, 2023 and 2022 exceeded the plan’s total 
service and interest costs expected for those years. Settlement losses are required to be recorded when lump sum payments 
exceed total service and interest costs. As a result, pension settlement expenses were recorded in 2024, 2023 and 2022.
Plan Assumptions
The following summarizes the assumptions used to determine the benefit obligations at December 31, and net periodic benefit 
cost for the defined benefit pension and other postretirement plans for 2024, 2023 and 2022.
Pension Benefits
Other Benefits
 
2024
2023
2022
2024
2023
2022
Benefit obligation:
Discount rate
 5.55 %
 4.85 %
 5.04 %
 5.58 %
 4.88 %
 5.08 %
Rate of compensation increase
 4.18 %
 4.18 %
 4.18 %
 4.18 %
 4.18 %
 4.18 %
Net periodic benefit cost:
Discount rate
 4.85 %
 5.10 %
 3.33 %
 4.88 %
 5.08 %
 2.93 %
Expected long-term return on plan 
assets
 6.80 %
 7.00 %
 5.75 %
 — %
 — %
 — %
Rate of compensation increase
 4.18 %
 4.18 %
 4.18 %
 4.18 %
 4.18 %
 4.18 %
Expected Long-term Return on Plan Assets
The overall expected long-term return on plan assets assumption is determined based on an asset rate-of-return modeling tool 
developed by a third-party investment group. The tool utilizes underlying assumptions based on actual returns by asset category 
and inflation and takes into account our asset allocation to derive an expected long-term rate of return on those assets. Capital 
117

market assumptions reflect the long-term capital market outlook. The assumptions for equity and fixed income investments are 
developed using a building-block approach, reflecting observable inflation information and interest rate information available in 
the fixed income markets. Long-term assumptions for other asset categories are based on historical results, current market 
characteristics and the professional judgment of our internal and external investment teams. 
Assumed Health Care Cost Trend
The following summarizes the assumed health care cost trend rates.
 
December 31,
 
2024
2023
2022
Health care cost trend rate assumed for the following year:
Medical: Pre-65
 7.90 %
 7.70 %
 6.60 %
Prescription drugs
 12.50 %
 10.80 %
 8.90 %
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate):
Medical: Pre-65
 4.50 %
 4.50 %
 4.50 %
Prescription drugs
 4.50 %
 4.50 %
 4.50 %
Year that the rate reaches the ultimate trend rate:
Medical: Pre-65
2034
2032
2031
Prescription drugs
2034
2032
2031
Increases in the post-65 medical plan premium for the Marathon Petroleum Health Plan and the Marathon Petroleum Retiree 
Health Plan have been permanently eliminated.
Plan Investment Policies and Strategies
The investment policies for our pension plan assets reflect the funded status of the plans and expectations regarding our future 
ability to make further contributions. Long-term investment goals are to: (1) manage the assets in accordance with the legal 
requirements of all applicable laws; (2) diversify plan investments across asset classes to achieve an optimal balance between 
risk and return and between income and growth of assets through capital appreciation; and (3) source benefit payments primarily 
through existing plan assets and anticipated future returns.
The investment goals are implemented to manage the plans’ funded status volatility and minimize future cash contributions. The 
asset allocation strategy will change over time in response to changes primarily in funded status, which is dictated by current and 
anticipated market conditions, the independent actions of our investment committee, required cash flows to and from the plans 
and other factors deemed appropriate. Such changes in asset allocation are intended to allocate additional assets to the fixed 
income asset class should the funded status improve. The fixed income asset class shall be invested in such a manner that its 
interest rate sensitivity correlates highly with that of the plans’ liabilities. Other asset classes are intended to provide additional 
return with associated higher levels of risk. Investment performance and risk is measured and monitored on an ongoing basis 
through quarterly investment meetings and periodic asset and liability studies. At December 31, 2024, the primary plan’s targeted 
asset allocation was 50 percent equity, private equity, real estate, and timber securities and 50 percent fixed income securities.
Fair Value Measurements 
Plan assets are measured at fair value. The following provides a description of the valuation techniques employed for each major 
plan asset category at December 31, 2024 and 2023.
Cash and cash equivalents 
Cash and cash equivalents include a collective fund serving as the investment vehicle for the cash reserves and cash held by 
third-party investment managers. The collective fund is valued at net asset value (“NAV”) on a scheduled basis using a cost 
approach and is considered a Level 2 asset. Cash and cash equivalents held by third-party investment managers are valued 
using a cost approach and are considered Level 2.
Equity
Equity investments include common stock, mutual and pooled funds. Common stock investments are valued using a market 
approach, which are priced daily in active markets and are considered Level 1. Mutual and pooled equity funds are well 
diversified portfolios, representing a mix of strategies in domestic, international and emerging market strategies. Mutual funds are 
publicly registered, valued at NAV on a daily basis using a market approach and are considered Level 1 assets. Pooled funds are 
valued at NAV using a market approach and are considered Level 2.
118

Fixed Income 
Fixed income investments include corporate bonds, U.S. dollar treasury bonds and municipal bonds. These securities are priced 
on observable inputs using a combination of market, income and cost approaches. These securities are considered Level 2 
assets. Fixed income also includes a well-diversified bond portfolio structured as a pooled fund. This fund is valued at NAV on a 
daily basis using a market approach and is considered Level 2.
Private Equity 
Private equity investments include interests in limited partnerships which are valued using information provided by external 
managers for each individual investment held in the fund. These holdings are considered Level 3.
Real Estate 
Real estate investments consist of interests in limited partnerships. These holdings are either appraised or valued using the 
investment manager’s assessment of assets held. These holdings are considered Level 3.
Other 
Other investments include two limited liability companies (“LLCs”) with no public market. The LLCs were formed to acquire 
timberland in the northwest U.S. These holdings are either appraised or valued using the investment manager’s assessment of 
assets held. These holdings are considered Level 3. Other investments classified as Level 2 include derivative transactions.
The following tables present the fair values of our defined benefit pension plans’ assets, by level within the fair value hierarchy, 
as of December 31, 2024 and 2023.
 
December 31, 2024
December 31, 2023
(Millions of dollars)
Level 1
Level 2
Level 3
Total
Level 1
Level 2
Level 3
Total
Cash and cash 
equivalents
$ 
— 
$ 
62 
$ 
— 
$ 
62 
$ 
— 
$ 
63 
$ 
— 
$ 
63 
Equity:
Common stocks
 
52 
 
— 
 
— 
 
52 
 
50 
 
— 
 
— 
 
50 
Mutual funds
 
125 
 
— 
 
— 
 
125 
 
115 
 
— 
 
— 
 
115 
Pooled funds
 
— 
 
871 
 
— 
 
871 
 
— 
 
791 
 
— 
 
791 
Fixed income:
Corporate
 
— 
 
637 
 
— 
 
637 
 
— 
 
588 
 
— 
 
588 
Government
 
— 
 
267 
 
— 
 
267 
 
— 
 
330 
 
— 
 
330 
Pooled funds
 
— 
 
117 
 
— 
 
117 
 
— 
 
118 
 
— 
 
118 
Private equity
 
— 
 
— 
 
9 
 
9 
 
— 
 
— 
 
10 
 
10 
Real estate
 
— 
 
— 
 
11 
 
11 
 
— 
 
— 
 
12 
 
12 
Other
 
— 
 
7 
 
— 
 
7 
 
— 
 
2 
 
3 
 
5 
Total investments, at fair 
value
$ 
177 
$ 
1,961 
$ 
20 
$ 
2,158 
$ 
165 
$ 
1,892 
$ 
25 
$ 
2,082 
Cash Flows
Contributions to defined benefit plans 
Our funding policy with respect to the funded pension plans is to contribute amounts necessary to satisfy minimum pension 
funding requirements, including requirements of the Pension Protection Act of 2006, plus such additional, discretionary, amounts 
from time to time as determined appropriate by management. In 2024, we made contributions totaling $92 million to our funded 
pension plans. For 2025, we do not project any required funding, but we may make voluntary contributions to our funded pension 
plans at our discretion. Cash contributions to be paid from our general assets for the unfunded pension and postretirement plans 
are estimated to be approximately $11 million and $51 million, respectively, in 2025.
119

Estimated future benefit payments 
The following gross benefit payments, which reflect expected future service, as appropriate, are expected to be paid in the years 
indicated.
(Millions of dollars)
Pension Benefits
Other Benefits
2025
$ 
177 
$ 
51 
2026
 
180 
 
52 
2027
 
188 
 
52 
2028
 
203 
 
53 
2029
 
206 
 
54 
2030 through 2034
 
1,219 
 
280 
Contributions to defined contribution plan 
We also contribute to a defined contribution plan for eligible employees. Contributions to this plan totaled $181 million, $176 
million and $167 million in 2024, 2023 and 2022, respectively.
Multiemployer Pension Plan
We contribute to one multiemployer defined benefit pension plan under the terms of a collective-bargaining agreement that 
covers some of our union-represented employees. The risks of participating in this multiemployer plan are different from single-
employer plans in the following aspects:
•
Assets contributed to the multiemployer plan by one employer may be used to provide benefits to employees of other 
participating employers.
•
If a participating employer stops contributing to the plan, the unfunded obligations of the plan may be borne by the 
remaining participating employers.
•
If we choose to stop participating in the multiemployer plan, we may be required to pay that plan an amount based on 
the underfunded status of the plan, referred to as a withdrawal liability.
Our participation in this plan for 2024, 2023 and 2022 is outlined in the table below. The “EIN” column provides the Employee 
Identification Number for the plan. The most recent Pension Protection Act zone status available in 2024 and 2023 is for the plan 
years ending on December 31, 2023 and December 31, 2022, respectively. The zone status is based on information that we 
received from the plan and is certified by the plan’s actuary. Among other factors, plans in the red zone are generally less than 65 
percent funded. The “FIP/RP Status Pending/Implemented” column indicates a financial improvement plan or a rehabilitation plan 
has been implemented. The last column lists the expiration date of the collective-bargaining agreement to which the plan is 
subject. There have been no significant changes that affect the comparability of 2024, 2023 and 2022 contributions. Our portion 
of the contributions does not make up more than five percent of total contributions to the plan.
 
 
Pension 
Protection
Act Zone 
Status
FIP/
RP Status
Pending/
Implemented
MPC Contributions 
(Millions of dollars)
Surcharge
Imposed
Expiration 
Date of
Collective – 
Bargaining
Agreement
Pension Fund
EIN
2024
2023
2024
2023
2022
Central States, Southeast 
and Southwest Areas 
Pension Plan(a)(b)
366044243
Red
Red
Implemented
$ 
3 
$ 
5 
$ 
5 
No
January 31, 
2031
(a) 
This agreement has a minimum contribution requirement of $338 per week per employee for 2025. A total of 252 employees participated in 
the plan as of December 31, 2024.
(b) 
The parties to the expired agreement continue operating under the relevant terms of the expired agreement while negotiating a successor 
agreement.
Multiemployer Health and Welfare Plan
We contribute to one multiemployer health and welfare plan that covers both active employees and retirees. Through the health 
and welfare plan, employees receive medical, dental, vision, prescription and disability coverage. Our contributions to this plan 
totaled $5 million, $7 million and $7 million for 2024, 2023 and 2022, respectively.
120

25. Share-Based Compensation 
Description of the Incentive Plans
Our employees and non-employee directors are eligible to receive share, share-based and other types of awards under the 
Marathon Petroleum Corporation 2021 Incentive Compensation Plan (“MPC 2021 Plan”). The MPC 2021 Plan authorizes the 
Compensation and Organization Development Committee of our board of directors (“Committee”) to grant nonqualified or 
incentive stock options, stock appreciation rights, share and share-based awards (including restricted stock and restricted stock 
unit awards), cash awards and performance awards to our employees and non-employee directors. The maximum number of 
shares of our common stock available for awards under the MPC 2021 Plan is 20.5 million shares. The MPC 2021 Plan became 
effective upon shareholder approval on April 28, 2021. Prior to that date, our employees and non-employee directors were 
eligible to receive share, share-based and other types of awards under the Amended and Restated Marathon Petroleum 
Corporation 2012 Incentive Compensation Plan (“MPC 2012 Plan”), effective April 26, 2012, and prior to that date, the Marathon 
Petroleum Corporation 2011 Second Amended and Restated Incentive Compensation Plan (“MPC 2011 Plan”). Shares issued as 
a result of awards granted under these plans are funded through the issuance of new MPC common shares.
Share-Based Awards under the Plans
Stock Options 
Prior to 2021, we granted stock options to certain officer and non-officer employees under the MPC 2011 Plan and the MPC 
2012 Plan. Stock options represent the right to purchase shares of our common stock at an exercise price equal to the closing 
price of our common stock on the date of grant. Stock options generally vest over a service period of three years and expire ten 
years after the grant date. We expensed stock options based on the grant date fair value of the awards over the requisite service 
period, adjusted for estimated forfeitures. We used the Black Scholes option-pricing model to estimate the fair value of stock 
options granted, which requires the input of subjective assumptions.
Restricted Stock and Restricted Stock Units 
We grant restricted stock units to certain employees and to our non-employee directors. Prior to 2021, we granted restricted 
stock to certain employees and to our non-employee directors. In general, restricted stock and restricted stock units granted to 
employees vest over a requisite service period of three years. Restricted stock awards and restricted stock unit awards granted 
to officers prior to 2022 are subject to an additional one-year holding period after the three-year vesting period. Restricted stock 
recipients have the right to vote such stock; however, dividends are accrued and when vested are payable at the dates specified 
in the awards. The non-vested shares are not transferable and are held by our transfer agent. Restricted stock units granted to 
non-employee directors are considered to vest immediately at the time of the grant for accounting purposes, as they are non-
forfeitable, but are not issued until the director’s departure from the board of directors. Restricted stock unit recipients do not 
have the right to vote any shares of stock and accrue dividend equivalents which when vested are payable at the dates specified 
in the awards. We expense restricted stock and restricted stock units based on the grant date fair value of the awards over the 
requisite service period, adjusted for estimated forfeitures. The fair values of restricted stock and restricted stock units are equal 
to the market price of our common stock on the grant date.
Performance Share Units 
We grant performance share unit awards to certain officer and non-officer employees. At grant, a performance share unit has a 
target value equal to the MPC common stock average 30-day closing price prior to the grant date. The actual payout value of a 
performance share unit is based on company performance (which can range from 0 percent to 200 percent) for the three-year 
performance period beginning January 1 of the year of grant, multiplied by, for the awards granted in 2021 and 2022, MPC’s 
closing share price on the date the Committee certifies performance; and for the awards granted in 2023 and 2024, MPC’s 
average closing share price for the final thirty calendar days at the end of the performance period. Company performance for 
purposes of payout will be determined by the relative ranking of the total shareholder return (“TSR”) of MPC common stock over 
the three-year performance period compared to the TSR of a select group of peer companies, the Standard & Poor’s 500 Index, 
the Alerian MLP Index, as well as the median of MPC’s compensation reference group applicable for the year the award is 
granted. These awards settle 100 percent in cash and are accounted for as liability awards. We expense liability-classified 
performance share unit awards at fair value over the requisite service period, with mark-to-market adjustments made each 
quarter until payout occurs. The fair value is determined using a Monte Carlo valuation model. 
Significant assumptions used in our Monte Carlo valuation models include: 1) risk free interest rate, for which we utilize the 
treasury rate for the time period closest to the remaining performance period of the award being valued; 2) look-back period (in 
years), for which we utilize the remaining performance period of the award being valued; and 3) expected volatility, for which we 
utilize the historical volatility of our own stock and the stock of our peer group for the look-back period previously discussed. 
In general, performance share units granted to officers have a vesting service period beginning on the grant date and ending on 
the last day of the three-year performance period, and performance share units granted to employees outside of our senior 
management vest in one-third increments at the end of each calendar year of the performance period. However, certain 
employees are eligible to vest in some awards earlier, subject to reaching certain age and employment milestones, with payout 
still occurring at the end of the original performance period.
121

Total Share-Based Compensation Expense
The following table reflects activity related to our share-based compensation arrangements:
(Millions of dollars)
2024
2023
2022
Share-based compensation expense
$ 
137 
$ 
211 
$ 
153 
Tax benefit recognized on share-based compensation expense
 
33 
 
51 
 
37 
Cash received by MPC upon exercise of stock option awards
 
25 
 
62 
 
243 
Tax benefit received for tax deductions for stock awards exercised
 
28 
 
49 
 
53 
Stock Option Awards
The following is a summary of our common stock option activity in 2024: 
Number of 
Shares
Weighted 
Average 
Exercise Price
Weighted 
Average 
Remaining 
Contractual 
Terms (in years)
Aggregate 
Intrinsic 
Value 
(Millions of 
dollars)
Outstanding at December 31, 2023
 
1,044,011 
$ 
52.07 
Exercised
 
(537,951) 
 
46.97 
Outstanding at December 31, 2024(a)
 
506,060 
 
57.50 
3.9
$ 
41 
(a) 
All options outstanding at December 31, 2024 are fully vested and exercisable.
The intrinsic value of options exercised by MPC employees during 2024, 2023 and 2022 was $75 million, $136 million and $247 
million, respectively.
As of December 31, 2024, there was no unrecognized compensation cost related to stock option awards.
Restricted Stock and Restricted Stock Unit Awards
The following is a summary of restricted stock unit award activity of our common stock in 2024:
 
Restricted Stock Units
 
Number of 
Units
Weighted 
Average 
Grant Date 
Fair Value
Unvested at December 31, 2023
 
1,192,704 
$ 
98.16 
Granted
 
496,894 
 
171.55 
Vested
 
(606,774) 
 
80.86 
Forfeited
 
(49,555) 
 
130.29 
Unvested at December 31, 2024
 
1,033,269 
 
142.08 
The following is a summary of the values related to restricted stock and restricted stock unit awards held by MPC employees and 
non-employee directors:
Restricted Stock
Restricted Stock Units
Intrinsic Value 
of Awards 
Vested During 
the Period 
(Millions of 
dollars)
Weighted 
Average Grant 
Date Fair Value 
of Awards 
Granted During 
the Period
Intrinsic Value 
of Awards 
Vested During 
the Period 
(Millions of 
dollars)
Weighted 
Average Grant 
Date Fair Value 
of Awards 
Granted During 
the Period
2024
$ 
— 
$ 
— 
$ 
102 
$ 
171.55 
2023
 
— 
 
— 
 
144 
 
133.94 
2022
 
17 
 
— 
 
99 
 
75.81 
122

As of December 31, 2024, there was no unrecognized compensation cost related to restricted stock awards. Unrecognized 
compensation cost related to restricted stock unit awards was $90 million, which is expected to be recognized over a weighted 
average period of 2.0 years.
Performance Awards
The following is a summary of performance share unit awards activity in 2024:
Number of 
Performance 
Share Units
Unvested at December 31, 2023
 
580,666 
Granted
 
255,290 
Vested
 
(393,862) 
Forfeited
 
(14,746) 
Unvested at December 31, 2024
 
427,348 
We paid $169 million, $14 million and $26 million during the years ended 2024, 2023 and 2022, respectively, to settle 
performance awards.
As of December 31, 2024, unrecognized compensation cost related to performance awards was $22 million, which is expected to 
be recognized over a weighted average period of 1.3 years. As of December 31, 2024, the total liability associated with 
performance awards was $184 million.
MPLX Awards
Compensation expense for awards of MPLX units are not material to our consolidated financial statements for 2024.
26. Leases 
Lessee
We lease a wide variety of facilities and equipment including land and building space, office and field equipment, storage facilities 
and transportation equipment. Our remaining lease terms range from less than one year to 94 years. Most long-term leases 
include renewal options ranging from one year to 40 years and, in certain leases, also include purchase options. The lease term 
included in the measurement of right of use assets and lease liabilities includes options to extend or terminate our leases that we 
are reasonably certain to exercise.
Under ASC 842, the components of lease cost are shown below. Lease costs for operating leases are recognized on a straight-
line basis and are reflected in the income statement based on the leased asset’s use. Lease costs for finance leases are 
reflected in depreciation and amortization and in net interest and other financial costs. 
(Millions of dollars)
2024
2023
2022
Finance lease cost:
Amortization of right of use assets
$ 
80 
$ 
73 
$ 
81 
Interest on lease liabilities
 
26 
 
25 
 
29 
Operating lease cost
 
534 
 
489 
 
490 
Variable lease cost
 
60 
 
54 
 
59 
Short-term lease cost
 
952 
 
881 
 
772 
Total lease cost
$ 
1,652 
$ 
1,522 
$ 
1,431 
123

Supplemental consolidated balance sheet data related to leases were as follows:
December 31,
(Millions of dollars)
2024
2023
Operating leases
Assets
Right of use assets
$ 
1,300 
$ 
1,233 
Liabilities
Operating lease liabilities
$ 
417 
$ 
454 
Long-term operating lease liabilities
 
860 
 
764 
Total operating lease liabilities
$ 
1,277 
$ 
1,218 
Weighted average remaining lease term (in years)
4
4
Weighted average discount rate
 4.4 %
 4.1 %
Finance leases
Assets
Property, plant and equipment, gross
$ 
1,118 
$ 
765 
Less accumulated depreciation
 
510 
 
413 
Property, plant and equipment, net
$ 
608 
$ 
352 
Liabilities
Debt due within one year
$ 
94 
$ 
69 
Long-term debt
 
630 
 
401 
Total finance lease liabilities
$ 
724 
$ 
470 
Weighted average remaining lease term (in years)
9
9
Weighted average discount rate
 4.8 %
 5.1 %
As of December 31, 2024, 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:
(Millions of dollars)
Operating
Finance
2025
$ 
464 
$ 
126 
2026
 
334 
 
123 
2027
 
242 
 
111 
2028
 
173 
 
97 
2029
 
76 
 
79 
2030 and thereafter
 
111 
 
360 
Gross lease payments
 
1,400 
 
896 
Less: imputed interest
 
123 
 
172 
Total lease liabilities
$ 
1,277 
$ 
724 
Lessor
MPLX is considered to be the lessor under several operating lease agreements in accordance with GAAP related to certain fee-
based natural gas transportation and processing agreements in the Marcellus and Southern Appalachia region. The primary 
terms of these agreements expire between 2026 and 2036, however, these contracts either have renewal options or will continue 
thereafter on a year-to-year basis until terminated by either party.
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. 
MPLX 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. 
124

During the third quarter of 2022, the approved expansion of a gathering and compression system triggered the first assessment 
of a third party agreement under ASC 842. As a result of the assessment during the period, the lease was reclassified from an 
operating lease to a sales-type lease. Accordingly, the underlying property, plant and equipment of $745 million and associated 
deferred revenue of $277 million were derecognized. The present value of the future lease payments of $914 million and the 
unguaranteed residual value of $63 million were recorded as the net investment in the lease within receivables and other 
noncurrent assets. This resulted in a gain of approximately $509 million, which was recorded as a net gain on disposal of assets 
in the consolidated statements of income. This transaction was a non-cash transaction.
Lease revenues are included in sales and other operating revenues on the consolidated statements of income. Lease revenues 
were as follows:
Rental income
$ 
260 
$ 
243 
$ 
327 
Sales-type leases:
Interest income (Sales-type rental revenue-fixed minimum)
 
114 
 
114 
 
46 
Interest income (Revenue from variable lease payments)
 
22 
 
22 
 
16 
Sales-type lease revenue
$ 
136 
$ 
136 
$ 
62 
(Millions of dollars)
2024
2023
2022
Operating leases:
The following is a schedule of minimum future rentals on the non-cancelable operating leases as of December 31, 2024:
(Millions of dollars)
2025
$ 
109 
2026
 
88 
2027
 
66 
2028
 
59 
2029
 
57 
2030 and thereafter
 
248 
Total minimum future rentals
$ 
627 
Annual minimum undiscounted lease payment receipts under our sales-type leases were as follows as of December 31, 2024:
(Millions of dollars)
2025
$ 
172 
2026
 
157 
2027
 
147 
2028
 
138 
2029
 
130 
2030 and thereafter
 
896 
Total minimum future rentals
 
1,640 
Less: imputed interest
 
707 
Lease receivables(a)
$ 
933 
Current lease receivables(b)
$ 
102 
Long-term lease receivables(c)
 
831 
Unguaranteed residual assets
 
95 
Total sales-type lease assets
$ 
1,028 
(a)
This amount does not include the unguaranteed residual assets. 
(b)
Presented in receivables, net on the consolidated balance sheets. 
(c)
Presented in other noncurrent assets on the consolidated balance sheets.
Capital expenditures related to assets subject to sales-type lease arrangements were $69 million for the year ended 
December 31, 2024. These amounts are reflected as additions to property, plant and equipment in the consolidated statements 
of cash flows.
125

The following schedule summarizes our investment in assets held under operating lease by major classes as of December 31, 
2024 and 2023:
December 31,
(Millions of dollars)
2024
2023
Gathering and transportation
$ 
86 
$ 
86 
Processing and fractionation
 
1,039 
 
1,000 
Pipelines
 
18 
 
12 
Terminals
 
129 
 
129 
Land, building and other
 
11 
 
10 
Property, plant and equipment
 
1,283 
 
1,237 
Less accumulated depreciation
 
458 
 
396 
Total property, plant and equipment, net
$ 
825 
$ 
841 
27. Commitments and Contingencies 
We are the subject of, or a party to, a number of pending or threatened legal actions, contingencies and commitments involving a 
variety of matters, including laws and regulations relating to the environment. Some of these matters are discussed below. For 
matters for which we have not recorded a liability, we are unable to estimate a range of possible loss because the issues 
involved have not been fully developed through pleadings, discovery or court proceedings. However, the ultimate resolution of 
some of these contingencies could, individually or in the aggregate, be material.
Environmental Matters 
We are subject to federal, state, local and foreign laws and regulations relating to the environment. These laws generally provide 
for control of pollutants released into the environment and require responsible parties to undertake remediation of hazardous 
waste disposal sites and certain other locations including presently or formerly owned or operated retail marketing sites. 
Penalties may be imposed for noncompliance.
At December 31, 2024 and 2023, accrued liabilities for remediation totaled $364 million and $387 million, respectively. It is not 
presently possible to estimate the ultimate amount of all remediation costs that might be incurred or the penalties, if any, that 
may be imposed. Receivables for recoverable costs from certain states, under programs to assist companies in clean-up efforts 
related to underground storage tanks at presently or formerly owned or operated retail marketing sites, were $6 million and $5 
million at December 31, 2024 and 2023, respectively.
Governmental and other entities in various states have filed climate-related lawsuits against a number of energy companies, 
including MPC. Although each suit is separate and unique, the lawsuits generally allege defendants made knowing 
misrepresentations about knowingly concealing, or failing to warn of the impacts of their petroleum products, which led to 
increased demand and worsened climate change. Plaintiffs are seeking unspecified damages and abatement under various tort 
theories, as well as breaches of consumer protection and unfair trade statutes. We are currently subject to such proceedings in 
federal or state courts in California, Delaware, Maryland, Hawaii, Rhode Island, South Carolina and Oregon. Similar lawsuits may 
be filed in other jurisdictions. At this early stage, the ultimate outcome of these matters remains uncertain, and neither the 
likelihood of an unfavorable outcome nor the ultimate liability, if any, can be determined.
We are involved in a number of environmental enforcement matters arising in the ordinary course of business. While the 
outcome and impact on us cannot be predicted with certainty, management believes the resolution of these environmental 
matters will not, individually or collectively, have a material adverse effect on our consolidated results of operations, financial 
position or cash flows.
Asset Retirement Obligations 
Our short-term asset retirement obligations were $36 million and $24 million at December 31, 2024 and 2023, respectively, and 
are included in other current liabilities in our consolidated balance sheets. Our long-term asset retirement obligations were $210 
million and $218 million at December 31, 2024 and 2023, respectively, which are included in deferred credits and other liabilities 
in our consolidated balance sheets. 
Other Legal Proceedings
In July 2020, Tesoro High Plains Pipeline Company, LLC (“THPP”), a subsidiary of MPLX, received a Notification of Trespass 
Determination from the Bureau of Indian Affairs (“BIA”) relating to a portion of the Tesoro High Plains Pipeline that crosses the 
Fort Berthold Reservation in North Dakota. The notification demanded the immediate cessation of pipeline operations and 
assessed trespass damages of approximately $187 million. After subsequent appeal proceedings and in compliance with a new 
order issued by the BIA, in December 2020, THPP paid approximately $4 million in assessed trespass damages and ceased use 
126

of the portion of the pipeline that crosses the property at issue. In March 2021, the BIA issued an order purporting to vacate the 
BIA's prior orders related to THPP’s alleged trespass and direct the Regional Director of the BIA to reconsider the issue of 
THPP’s alleged trespass and issue a new order. In April 2021, THPP filed a lawsuit in the District of North Dakota against the 
United States of America, the U.S. Department of the Interior and the BIA (collectively, the “U.S. Government Parties”) 
challenging the March 2021 order purporting to vacate all previous orders related to THPP’s alleged trespass. On February 8, 
2022, the U.S. Government Parties filed their answer and counterclaims to THPP’s suit claiming THPP is in continued trespass 
with respect to the pipeline and seek disgorgement of pipeline profits from June 1, 2013 to present, removal of the pipeline and 
remediation. On November 8, 2023, the District Court of North Dakota granted THPP’s motion to sever and stay the U.S. 
Government Parties’ counterclaims. The case will proceed on the merits of THPP’s challenge to the March 2021 order purporting 
to vacate all previous orders related to THPP’s alleged trespass. THPP continues not to operate that portion of the pipeline that 
crosses the property at issue.
We are also a party to a number of other lawsuits and other proceedings arising in the ordinary course of business. While the 
ultimate outcome and impact to us cannot be predicted with certainty, we believe that the resolution of these other lawsuits and 
proceedings will not, individually or collectively, have a material adverse effect on our consolidated financial position, results of 
operations or cash flows.
Guarantees 
We have provided certain guarantees, direct and indirect, of the indebtedness of other companies. Under the terms of most of 
these guarantee arrangements, we would be required to perform should the guaranteed party fail to fulfill its obligations under 
the specified arrangements. In addition to these financial guarantees, we also have various performance guarantees related to 
specific agreements.
Guarantees related to indebtedness of equity method investees 
LOOP and LOCAP
MPC and MPLX hold interests in an offshore oil port, LOOP, and MPLX holds an interest in a crude oil pipeline system, LOCAP. 
Both LOOP and LOCAP have secured various project financings with throughput and deficiency agreements. Under the 
agreements, MPC, as a shipper, is required to advance funds if the investees are unable to service their debt. Any such 
advances are considered prepayments of future transportation charges. The duration of the agreements varies but tends to 
follow the terms of the underlying debt, which extend through 2040. Our maximum potential undiscounted payments under these 
agreements for the debt principal totaled $212 million as of December 31, 2024.
Dakota Access Pipeline
MPLX holds a 9.19 percent indirect interest in a joint venture (“Dakota Access”), which owns and operates the Dakota Access 
Pipeline and Energy Transfer Crude Oil Pipeline projects (collectively, the “Bakken Pipeline system”). In 2020, the U.S. District 
Court for the District of Columbia (the “D.D.C.”) ordered the U.S. Army Corps of Engineers (“Army Corps”), which granted permits 
and an easement for the Bakken Pipeline system, to prepare an environmental impact statement (“EIS”) relating to an easement 
under Lake Oahe in North Dakota. The D.D.C. later vacated the easement. The Army Corps issued a draft EIS in September 
2023 detailing various options for the easement going forward, including denying the easement, approving the easement with 
additional measures, rerouting the easement, or approving the easement with no changes. The Army Corps has not selected a 
preferred alternative, but will make a decision in its final review, after considering input from the public and other agencies. The 
pipeline remains operational while the Army Corps finalizes its decision which will follow the issuance of the final EIS. According 
to public statements from Army Corps officials, the EIS is now expected to be issued in 2025.
MPLX has entered into a Contingent Equity Contribution Agreement whereby it, along with the other joint venture owners in the 
Bakken Pipeline system, has agreed to make equity contributions to the joint venture upon certain events occurring to allow the 
entities that own and operate the Bakken Pipeline system to satisfy their senior note payment obligations. The senior notes were 
issued to repay amounts owed by the pipeline companies to fund the cost of construction of the Bakken Pipeline system. If the 
vacatur of the easement results in a temporary shutdown of the pipeline, MPLX would have to contribute its 9.19 percent pro rata 
share of funds required to pay interest accruing on the notes and any portion of the principal that matures while the pipeline is 
shut down. MPLX also expects to contribute its 9.19 percent pro rata share of any costs to remediate any deficiencies to 
reinstate the easement and/or return the pipeline into operation. If the vacatur of the easement results in a permanent shutdown 
of the pipeline, MPLX would have to contribute its 9.19 percent pro rata share of the cost to redeem the bonds (including the 1 
percent redemption premium required pursuant to the indenture governing the notes) and any accrued and unpaid interest. As 
of December 31, 2024, our maximum potential undiscounted payments under the Contingent Equity Contribution Agreement 
were approximately $78 million.
Marathon Oil indemnifications 
The separation and distribution agreement and other agreements with Marathon Oil to effect our spinoff provide for cross-
indemnities between Marathon Oil and us. In general, Marathon Oil and its successor, ConocoPhillips, is required to indemnify us 
for any liabilities relating to Marathon Oil’s historical oil and gas exploration and production operations, oil sands mining 
operations and integrated gas operations, and we are required to indemnify Marathon Oil and its successor, ConocoPhillips, for 
127

any liabilities relating to Marathon Oil’s historical refining, marketing and transportation operations. The terms of these 
indemnifications are indefinite and the amounts are not capped.
Other guarantees 
We have entered into other guarantees with maximum potential undiscounted payments totaling $191 million as of December 31, 
2024, which primarily consist of a commitment to indemnify a joint venture member for our pro rata share of any payments made 
under a performance guarantee for construction of a pipeline by an equity method investee, a commitment to contribute cash to 
an equity method investee for certain catastrophic events in lieu of procuring insurance coverage, a commitment to pay a 
termination fee on a supply agreement if terminated during the initial term, a commitment to fund a share of the bonds issued by 
a government entity for construction of public utilities in the event that other industrial users of the facility default on their utility 
payments and leases of assets containing general lease indemnities and guaranteed residual values.
General guarantees associated with dispositions 
Over the years, we have sold various assets in the normal course of our business. Certain of the related agreements contain 
performance and general guarantees, including guarantees regarding inaccuracies in representations, warranties, covenants and 
agreements, and environmental and general indemnifications that require us to perform upon the occurrence of a triggering 
event or condition. These guarantees and indemnifications are part of the normal course of selling assets. We are typically not 
able to calculate the maximum potential amount of future payments that could be made under such contractual provisions 
because of the variability inherent in the guarantees and indemnities. Most often, the nature of the guarantees and indemnities is 
such that there is no appropriate method for quantifying the exposure because the underlying triggering event has little or no past 
experience upon which a reasonable prediction of the outcome can be based.
Contractual Commitments and Contingencies
At December 31, 2024, our contractual commitments to acquire property, plant and equipment totaled $260 million. Our 
contractual commitments to acquire property, plant and equipment totaled $281 million at December 31, 2023.
Certain natural gas processing and gathering arrangements require us to construct natural gas processing plants, natural gas 
gathering pipelines and NGL pipelines and contain certain fees and charges if specified construction milestones are not achieved 
for reasons other than force majeure. In certain cases, certain producer customers may have the right to cancel the processing 
arrangements if there are significant delays that are not due to force majeure.
28. Subsequent Event
On February 10, 2025, MPC issued $2.0 billion aggregate principal amount of senior notes in an underwritten public offering 
consisting of $1.1 billion aggregate principal amount of 5.150 percent senior notes due March 2030 and $900 million aggregate 
principal amount of 5.700 percent senior notes due March 2035. We intend to use the net proceeds from this offering to repay, 
redeem or otherwise retire our outstanding $1.250 billion aggregate principal amount of 4.700 percent senior notes due May 
2025 and for general corporate purposes.
128

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
None
Item 9A. Controls and Procedures 
Disclosure Controls and Procedures
An evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 
13a-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), was carried out under the supervision 
and with the participation of our management, including our chief executive officer and chief financial officer. Based upon that 
evaluation, the chief executive officer and chief financial officer concluded that the design and operation of these disclosure 
controls and procedures were effective as of December 31, 2024, the end of the period covered by this Annual Report on Form 
10-K.
Changes in Internal Control over Financial Reporting
Our “Management’s Report on Internal Control over Financial Reporting” and the “Report of Independent Registered Public 
Accounting Firm” are set forth in Item 8.
During the quarter ended December 31, 2024, there were no changes in our internal control over financial reporting that have 
materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
Item 9B. Other Information
During the quarter ended December 31, 2024, no director or officer (as defined in Rule 16a-1(f) promulgated under the 
Exchange Act) of MPC adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading 
arrangement” (as each term is defined in Item 408 of Regulation S-K).
Item 9C. Disclosures Regarding Foreign Jurisdictions that Prevent Inspections
Not applicable
129

PART III
Item 10. Directors, Executive Officers and Corporate Governance
Information concerning our executive officers is included in Part I, Item 1 of this Annual Report on Form 10-K. Information 
concerning our directors is incorporated by reference to “Corporate Governance—Proposal 1. Election of Directors” in our Proxy 
Statement for the 2025 Annual Meeting of Shareholders, to be filed with the SEC within 120 days of December 31, 2024 (the 
“Proxy Statement”). 
Our Code of Business Conduct, which applies to all of our directors, officers and employees, defines our expectations for ethical 
decision-making, accountability and responsibility. Our Code of Ethics for Senior Financial Officers, which is specifically 
applicable to our Chief Executive Officer, Chief Financial Officer, Controller and Treasurer, and other leaders performing similar 
functions, affirms the principle that the honesty, integrity and sound judgment of our senior executives with responsibility for 
preparation and certification of our financial statements is essential to the proper functioning and success of our company. These 
codes are available on our website at www.marathonpetroleum.com/Investors/Corporate-Governance/. We would post on our 
website any amendments to, or waivers from, either of these codes requiring disclosure under applicable rules within four 
business days following any such amendment or waiver. Information contained on our website is not incorporated into this 
Annual Report on Form 10-K or other securities filings.
The other information required by this Item is incorporated by reference to “Corporate Governance—Board Function and 
Leadership—Board Committees” and “Other Information—Insider Trading Policies and Procedures” in our Proxy Statement. 
Item 11. Executive Compensation
Information required by this Item is incorporated by reference to “Executive Compensation,” “Executive Compensation—
Executive Compensation Tables” (excluding the information under the subheading “Pay Versus Performance”) and “Corporate 
Governance—Non-Employee Director Compensation” in our Proxy Statement.
130

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related 
Stockholder Matters
Information concerning security ownership of certain beneficial owners and management required by this Item is incorporated by 
reference to “Other Information—Stock Ownership Information” in our Proxy Statement.
Securities Authorized for Issuance Under Equity Compensation Plans
The following table provides information as of December 31, 2024 with respect to shares of our common stock that may be 
issued under the MPC 2021 Plan, the MPC 2012 Plan and the MPC 2011 Plan:
Plan category
Number of 
securities to be 
issued upon exercise 
of outstanding 
options, warrants 
and rights(a)
 
Weighted-
average exercise 
price of 
outstanding 
options, warrants 
and rights(b)
Number of securities 
remaining available 
for future issuance 
under equity 
compensation 
plans (excluding 
securities reflected in 
the first column)(c)
Equity compensation plans approved by stockholders
 
1,803,526 
$ 
57.50 
 
19,422,757 
Equity compensation plan not approved by stockholders
 
— 
 
— 
 
— 
Total
 
1,803,526 
N/A  
 
19,422,757 
 (a)  Includes the following:
1)
506,060 stock options granted pursuant to the MPC 2012 Plan and not forfeited, cancelled or expired as of December 31, 2024; and
2) 
1,297,466 restricted stock units granted pursuant to the MPC 2021 Plan, the MPC 2012 Plan and the MPC 2011 Plan for shares 
unissued and not forfeited, cancelled or expired as of December 31, 2024.
(b) 
Restricted stock, restricted stock units and performance units are not taken into account in the weighted-average exercise price as such 
awards have no exercise price.
(c) 
Reflects the shares available for issuance pursuant to the MPC 2021 Plan. All granting authority under the MPC 2012 Plan was revoked 
following the approval of the MPC 2021 Plan by shareholders on April 28, 2021. All granting authority under the MPC 2011 Plan was 
revoked following the approval of the MPC 2012 Plan by shareholders on April 25, 2012. Shares that (i) relate to grants made pursuant to 
the MPC 2012 Plan that are forfeited, cancelled or expire unexercised or (ii) are withheld or tendered to satisfy taxes related to vestings of 
restricted stock units under the MPC 2012 Plan, in each case, become immediately available for issuance under the MPC 2021 Plan.
Item 13. Certain Relationships and Related Transactions, and Director Independence
Information required by this Item is incorporated by reference to “Other Information—Related Party Transactions” and “Corporate 
Governance—Board Composition and Director Selection—Director Independence” in our Proxy Statement.
Item 14. Principal Accountant Fees and Services
Information required by this Item is incorporated by reference to “Audit Matters—Auditor Fees and Services” in our Proxy 
Statement.
131

PART IV
Item 15. Exhibits and Financial Statement Schedules
A. Documents Filed as Part of the Report
1. Financial Statements (see Part II, Item 8. of this Annual Report on Form 10-K regarding financial statements)
2. Financial Statement Schedules
Financial statement schedules required under SEC rules but not included in this Annual Report on Form 10-K are omitted 
because they are not applicable or the required information is contained in the consolidated financial statements or notes 
thereto.
3. Exhibits: 
2
Plan of Acquisition, Reorganization, 
Arrangement, Liquidation or Succession
2.1 †
Purchase and Sale Agreement, dated as of 
August 2, 2020, by and between MPC, the 
MPC subsidiaries party thereto and 7-Eleven, 
Inc.
8-K
2.1
8/3/2020
001-35054
2.2
Amendment to Purchase and Sale 
Agreement, dated as of October 16, 2020, by 
and among MPC, the MPC subsidiaries party 
thereto and 7-Eleven, Inc.
10-K
2.7
2/26/2021
001-35054
2.3 †
Amendment No. 2 to Purchase and Sale 
Agreement, dated as of May 14, 2021, by and 
among the Company, Sellers and Purchaser
8-K
2.3
5/14/2021
001-35054
3
Articles of Incorporation and Bylaws
3.1
Restated Certificate of Incorporation of 
Marathon Petroleum Corporation, dated April 
24, 2024
8-K
3.2
4/26/2024
001-35054
3.2
Amended and Restated Bylaws of Marathon 
Petroleum Corporation, dated October 27, 
2021
10-Q
3.2
11/2/2021
001-35054
4
Instruments Defining the Rights of 
Security Holders, Including Indentures, 
and Description of Registrant’s Securities
Pursuant to Item 601(b)(4) of Regulation S-K, certain instruments with respect to long-term debt issues have been omitted where the amount of 
securities authorized under such instruments does not exceed 10 percent of the total consolidated assets of the Registrant. The Registrant 
hereby agrees to furnish a copy of any such instrument to the Securities and Exchange Commission upon its request. 
4.1
Indenture, dated as of February 1, 2011,  
between Marathon Petroleum Corporation 
and The Bank of New York Mellon Trust 
Company, N.A., as Trustee
10
4.1
3/29/2011
001-35054
4.2
Indenture, dated February 12, 2015, between 
MPLX LP and The Bank of New York Mellon 
Trust Company, N.A., as Trustee
8-K
4.1
2/12/2015
001-35714
4.3
Description of Securities
10-K
4.3
2/23/2023
001-35054
10
Material Contracts
10.1
Omnibus Agreement, dated as of October 31, 
2012, among Marathon Petroleum 
Corporation, Marathon Petroleum Company 
LP, MPL Investment LLC, MPLX Operations 
LLC, MPLX Terminal and Storage LLC, MPLX 
Pipe Line Holdings LP, Marathon Pipe Line 
LLC, Ohio River Pipe Line LLC, MPLX LP and 
MPLX GP LLC
8-K
10.2
11/6/2012
001-35054
10.2 *
Marathon Petroleum Corporation Second 
Amended and Restated 2011 Incentive 
Compensation Plan
S-3
4.3
12/7/2011
333-175286
Exhibit
Number
Exhibit Description
Incorporated by Reference
Filed
Herewith
Furnished
Herewith
Form
Exhibit
Filing
Date
SEC
File No.
132

10.3 *
First Amendment to the Marathon Petroleum 
Corporation Amended and Restated 2011 
Incentive Compensation Plan
10-Q
10.1
8/3/2015
001-35054
10.4 *
Amended and Restated Marathon Petroleum 
Corporation 2012 Incentive Compensation 
Plan
10-K
10.87
2/28/2019
001-35054
10.5 *
First Amendment to the Amended and 
Restated Marathon Petroleum Corporation 
2012 Incentive Compensation Plan
10-K
10.84
2/28/2020
001-35054
10.6 *
Marathon Petroleum Corporation 2021 
Incentive Compensation Plan
8-K
10.1
5/4/2021
001-35054
10.7 *
MPLX LP 2012 Incentive Compensation Plan
S-1/A
10.3
10/9/2012
333-182500
10.8 *
MPLX LP 2012 Incentive Compensation Plan 
MPC Non-Employee Director Phantom Unit 
Award Policy
10-K
10.32
2/28/2013
001-35054
10.9 *
MPLX LP 2018 Incentive Compensation Plan
8-K
10.1
3/5/2018
001-35714
10.10*
First Amendment to the MPLX 2018 Incentive 
Compensation Plan
10-K
10.75
2/28/2020
001-35714
10.11*
MPLX LP 2018 Incentive Compensation Plan 
MPC Non-Employee Director Phantom Unit 
Award Policy
10-K
10.86
2/28/2019
001-35054
10.12*
MPLX LP 2018 Incentive Compensation Plan 
MPC Non-Employee Director Phantom Unit 
Award Policy, as amended and restated 
October 1, 2024
10-Q
10.4
11/05/2024
001-35054
10.13 *
Marathon Petroleum Executive Deferred 
Compensation Plan, effective January 1, 2021 
10-K
10.73
2/26/2021
001-35054
10.14 *
Marathon Petroleum Executive Deferred 
Compensation Plan Adoption Agreement, 
effective January 1, 2021
10-K
10.74
2/26/2021
001-35054
10.15 *
Marathon Petroleum Deferred Compensation 
Plan (as amended and restated effective 
December 31, 2023)
10-K
10.44
2/28/2024
001-35054
10.16 *
Form of Marathon Petroleum Corporation 
2011 Incentive Compensation Plan 
Supplemental Restricted Stock Unit Award 
Agreement – Non-Employee Director
10-K
10.22
2/29/2012
001-35054
10.17 *
Nonqualified Stock Option Award Agreement - 
Officer
10-Q
10.2
5/9/2019
001-35054
10.18 *
Form of 2020 Officer Stock Option Award 
Agreement 
10-Q
10.3
5/7/2020
001-35054
10.19 *
Form of 2022 MPC Officer Performance Unit 
Award Agreement – 2022-2024 Performance 
Cycle 
10-K
10.64
2/24/2022
001-35054
10.20 *
Form of 2022 MPC Officer RSU Award 
Agreement – 3-year Pro Rata Vesting 
10-Q
10.5
5/3/2022
001-35054
10.21 *
Form of 2022 MPLX Phantom Unit Award 
Agreement
10-Q
10.1
5/3/2022
001-35714
10.22 *
Form of 2023 MPC Officer Performance 
Share Unit Award Agreement – 2023-2025 
Performance Period
10-K
10.48
2/23/2023
001-35054
10.23 *
Form of 2023 MPC Officer RSU Award 
Agreement - 2021 Plan
10-K
10.49
2/23/2023
001-35054
10.24 *
Form of 2023 MPLX Phantom Unit Award 
Agreement
10-K
10.52
2/23/2023
001-35054
10.25 *
Form of MPC Officer Performance Unit Award 
Agreement – 2024-2026 Performance Cycle
10-K
10.41
2/28/2024
001-35054
10.26 *
Form of 2024 MPC Officer RSU Award 
Agreement
10-K
10.42
2/28/2024
001-35054
10.27 *
Form of 2024 MPLX Phantom Unit Award 
Agreement
10-Q
10.1
4/30/2024
001-35054
10.28 *
Marathon Petroleum Thrift Plan, as amended 
and restated effective January 1, 2023
10-K
10.50
2/23/2023
001-35054
Exhibit
Number
Exhibit Description
Incorporated by Reference
Filed
Herewith
Furnished
Herewith
Form
Exhibit
Filing
Date
SEC
File No.
133

10.29 *
First Amendment to the Marathon Petroleum 
Thrift Plan
10-Q
10.3
5/2/2023
001-35054
10.30 *
Second Amendment to the Marathon 
Petroleum Thrift Plan
10-Q
10.1
8/1/2023
001-35054
10.31 *
Third Amendment to the Marathon Petroleum 
Thrift Plan 
10-K
10.36
2/28/2024
001-35054
10.32 *
Fourth Amendment to the Marathon 
Petroleum Thrift Plan
10-K
10.37
2/28/2024
001-35054
10.33 *
Fifth Amendment to the Marathon Petroleum 
Thrift Plan
10-Q
10.2
4/30/2024
001-35054
10.34*
Sixth Amendment to the Marathon Petroleum 
Thrift Plan
10-Q
10.5
11/05/2024
001-35054
10.35 *
2024 Marathon Petroleum Annual Cash 
Bonus Program
10-K
10.43
2/28/2024
001-35054
10.36 *
Marathon Petroleum Excess Benefit Plan (as 
amended and restated effective December 
31, 2023)
10-K
10.45
2/28/2024
001-35054
10.37*
Amendment to the Marathon Petroleum 
Excess Benefit Plan, dated April 10, 2024
10-Q
10.1
8/06/2024
001-35054
10.38*
Amended and Restated Aircraft Time Sharing 
Agreement, dated as of August 14, 2024, by 
and between Marathon Petroleum Company 
LP and Michael J. Hennigan
10-Q
10.1
11/05/2024
001-35054
10.39*
Aircraft Time Sharing Agreement, dated as of 
August 14, 2024, by and between Marathon 
Petroleum Company LP and Maryann T. 
Mannen
10-Q
10.2
11/05/2024
001-35054
10.40
Revolving Credit Agreement, dated as of July 
7, 2022, by and among Marathon Petroleum 
Corporation, as borrower, JPMorgan Chase 
Bank, N.A., as administrative agent, each of 
JPMorgan Chase Bank, N.A., Wells Fargo 
Securities, LLC, Barclays Bank PLC, BofA 
Securities, Inc., Citibank, N.A., Mizuho Bank, 
Ltd., MUFG Bank, Ltd., RBC Capital Markets, 
and TD Securities (USA) LLC, as joint lead 
arrangers and joint bookrunners, Wells Fargo 
Bank, National Association, as syndication 
agent, each of Bank of America, N.A., 
Barclays Bank PLC, Citibank, N.A., Mizuho 
Bank, Ltd., MUFG Bank, Ltd., Royal Bank of 
Canada and The Toronto-Dominion Bank, 
New York Branch, as documentation agents, 
and the other lenders and issuing banks that 
are parties thereto
8-K
10.1
7/12/2022
001-35054
10.41
Revolving Credit Agreement, dated as of July 
7, 2022, by and among MPLX LP, as 
borrower, Wells Fargo Bank, National 
Association, as administrative agent, each of 
Wells Fargo Securities, LLC, JPMorgan 
Chase Bank, N.A., Barclays Bank PLC, BofA 
Securities, Inc., Citibank, N.A., Mizuho Bank, 
Ltd., MUFG Bank, Ltd., RBC Capital Markets 
and TD Securities (USA) LLC, as joint lead 
arrangers and joint bookrunners, JPMorgan 
Chase Bank, N.A., as syndication agent, each 
of Bank of America, N.A., Barclays Bank PLC, 
Citibank, N.A., Mizuho Bank, Ltd., MUFG 
Bank, Ltd., Royal Bank of Canada and The 
Toronto-Dominion Bank, New York Branch, as 
documentation agents, and the other lenders 
and issuing banks that are parties thereto
8-K
10.2
7/12/2022
001-35054
10.42*
Marathon Petroleum Corporation Deferred 
Compensation Plan for Non-Employee 
Directors, as amended and restated effective 
November 15, 2024
X
10.43*
MPLX LP 2018 Incentive Compensation Plan 
MPC Non-Employee Director Phantom Unit 
Award Policy, as amended and restated 
effective November 15, 2024
X
Exhibit
Number
Exhibit Description
Incorporated by Reference
Filed
Herewith
Furnished
Herewith
Form
Exhibit
Filing
Date
SEC
File No.
134

10.44*
First Amendment to Amended and Restated 
Aircraft Time Sharing Agreement dated as of 
October 16, 2024, by and between Marathon 
Petroleum Company LP and Michael J. 
Hennigan
X
10.45*
Second Amendment to Amended and 
Restated Aircraft Time Sharing Agreement 
dated as of November 30, 2024, 2024, by and 
between Marathon Petroleum Company LP 
and Michael J. Hennigan
X
10.46*
First Amendment to Aircraft Time Sharing 
Agreement dated as of October 16, 2024, by 
and between Marathon Petroleum Company 
LP and Maryann T. Mannen
X
10.47*
Second Amendment to Aircraft Time Sharing 
Agreement dated as of November 30, 2024, 
by and between Marathon Petroleum 
Company LP and Maryann T. Mannen
X
10.48*
Marathon Petroleum Corporation Senior 
Leader Change in Control Severance Benefits 
Plan, as amended and restated effective 
December 1, 2024
X
10.49*
MPLX LP Senior Leader Change in Control 
Severance Benefits Plan, as amended and 
restated effective December 1, 2024 
X
10.50*
Seventh Amendment to the Marathon 
Petroleum Thrift Plan
X
19.1
Trading of Securities Policy
X
21.1
List of Subsidiaries
X
23.1
Consent of Independent Registered Public 
Accounting Firm
X
24.1
Power of Attorney of Directors and Officers of 
Marathon Petroleum Corporation
X
31.1
Certification of Chief Executive Officer 
pursuant to Rule 13(a)-14 and 15(d)-14 under 
the Securities Exchange Act of 1934.
X
31.2
Certification of Chief Financial Officer 
pursuant to Rule 13(a)-14 and 15(d)-14 under 
the Securities Exchange Act of 1934.
X
32.1
Certification of Chief Executive Officer 
pursuant to 18 U.S.C. Section 1350.
X
32.2
Certification of Chief Financial Officer 
pursuant to 18 U.S.C. Section 1350.
X
97.1
Marathon Petroleum Corporation Officer 
Compensation Clawback Policy
10-K
97.1
2/28/2024
001-35054
101.INS
Inline XBRL Instance Document - the instance 
document does not appear in the Interactive 
Data File because its XBRL tags are 
embedded with the Inline XBRL document.
X
101.SCH
Inline XBRL Taxonomy Extension Schema 
Document.
X
101.PRE
Inline XBRL Taxonomy Extension 
Presentation Linkbase Document.
X
101.CAL
Inline XBRL Taxonomy Extension Calculation 
Linkbase Document.
X
101.DEF
Inline XBRL Taxonomy Extension Definition 
Linkbase Document.
X
101.LAB
Inline XBRL Taxonomy Extension Label 
Linkbase Document.
X
104
Cover Page Interactive Data File (formatted 
as Inline XBRL and contained in Exhibit 101).
Exhibit
Number
Exhibit Description
Incorporated by Reference
Filed
Herewith
Furnished
Herewith
Form
Exhibit
Filing
Date
SEC
File No.
135

† 
The exhibits and schedules have been omitted pursuant to Item 601(b)(2) of Regulation S-K and will be provided to the Securities and 
Exchange Commission upon request.
* 
Indicates management contract or compensatory plan, contract or arrangement in which one or more directors or executive officers of the 
Registrant may be participants.
136

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this 
report to be signed on its behalf by the undersigned, thereunto duly authorized.
 
Date: February 27, 2025
MARATHON PETROLEUM CORPORATION
By:
/s/ Erin M. Brzezinski
Erin M. Brzezinski
Vice President and Controller
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons 
on February 27, 2025 on behalf of the registrant and in the capacities indicated.
/s/ Maryann T. Mannen
Director, President and Chief Executive Officer
(principal executive officer)
Maryann T. Mannen
/s/ John J. Quaid
Executive Vice President and Chief Financial Officer
(principal financial officer)
John J. Quaid
/s/ Erin M. Brzezinski
Vice President and Controller
(principal accounting officer)
Erin M. Brzezinski
*
Executive Chairman of the Board of Directors
Michael J. Hennigan
*
Director
Abdulaziz F. Alkhayyal
*
Director
Evan Bayh
*
Director
Charles E. Bunch
*
Director
Jeffrey C. Campbell
*
Director
Jonathan Z. Cohen
*
Director
Kimberly N. Ellison-Taylor
Signature
Title
137

*
Director
Edward G. Galante
*
Director
Eileen P. Paterson
*
Director
Kim K.W. Rucker
*
Director
Frank M. Semple
*
Director
J. Michael Stice
*
Director
John P. Surma
*
Director
Susan Tomasky
Signature
Title
* The undersigned, by signing her name hereto, does sign and execute this report pursuant to the Power of Attorney executed by 
the above-named directors and officers of the registrant, which is being filed herewith on behalf of such directors and officers.
 
By:
/s/ Maryann T. Mannen
February 27, 2025
Maryann T. Mannen
Attorney-in-Fact
138

Corporate Headquarters
539 South Main St., Findlay, OH 45840
Marathon Petroleum Corporation 
Website: www.marathonpetroleum.com
Investor Relations Office
539 South Main St. 
Findlay, OH 45840 
ir@marathonpetroleum.com
Kristina Kazarian  
Vice President 
Finance and Investor Relations 
(419) 421-2071
Notice of Annual Meeting
The 2025 Annual Meeting of 
Shareholders will be held in a 
virtual-only format via live 
webcast on April 30, 2025.
Independent Accountants
PricewaterhouseCoopers LLP 
406 Washington St., Suite 200 
Toledo, OH 43604
Stock Exchange Listing
New York Stock Exchange
Common Stock Symbol: MPC
Principal Stock Transfer Agent
Computershare
P.O. Box 43078
Providence, RI 02940-3078
By overnight delivery:
150 Royall St., Suite 101
Canton, MA 02021
Internet Inquiries:
Investor Center website at 
www-us.computershare.com/investor
Email: web.queries@computershare.com
Telephone Inquiries:
Toll Free: 866-820-7494
(U.S., Canada and Puerto Rico)
Toll: 781-575-2176 
(other, non-U.S. jurisdictions)
Annual Report on Form 10-K
Additional copies of the 
Marathon Petroleum Corporation 
2024 Annual Report may be 
obtained by contacting:
Investor Relations 
539 South Main St.
Findlay, OH 45840
(419) 421-2071
Dividends Dividends on common stock, as may be declared by the Board of 
Directors, are typically paid mid-month in March, June, September and December. 
Dividend Checks Not Received / Electronic Deposit If you do not receive your 
dividend check on the appropriate payment date, we suggest that you wait at least 
10 days after the payment date to allow for any delay in mail delivery. After that time, 
advise Computershare by phone or in writing to issue a replacement check. You 
may contact Computershare to authorize electronic deposit of your dividends into 
your bank account.
Book-entry Form of Stock Ownership Marathon Petroleum Corporation exclusively 
maintains book-entry form of stockholder ownership. Account statements issued 
by stock transfer agent, Computershare, shall serve as stockholders’ record 
of ownership. Questions regarding stock ownership should be directed to 
Computershare.
Taxpayer Identification Number Federal law requires that each stockholder provide 
a certified taxpayer identification number (TIN) for his/her stockholder account. 
For individual stockholders, your TIN is your Social Security number. If you do not 
provide a certified TIN, Computershare may be required to withhold 24% for federal 
income taxes from your dividends.
Address Change It is important that you notify Computershare immediately, by 
phone, in writing or by fax, when you change your address. Seasonal addresses can 
be entered for your account.
Stock Return Performance Graph The graph below matches the cumulative 5-year 
total return of holders of Marathon Petroleum Corporation’s common stock with the 
cumulative total returns of the S&P 500 index and the S&P 500 Oil & Gas Refining & 
Marketing sub-industry index. The graph assumes that the value of the investment 
in our common stock and in each index (including reinvestment of dividends) was 
$100 on 12/31/2019 and tracks it through 12/31/2024.
CORPORATE INFORMATION
The following performance graph is not “soliciting material” and will not be deemed to be filed with the 
Securities and Exchange Commission (SEC) or incorporated by reference into any of MPC’s filings with the 
SEC, except to the extent that we specifically incorporate it by reference into any such filings.
COMPARISON OF 5-YEAR CUMULATIVE TOTAL RETURN*
Among Marathon Petroleum Corporation, the S&P 500 Index 
and the S&P 500 Oil & Gas Refining & Marketing Index
*$100 invested on 12/31/19 in stock or index, including reinvestment of dividends. 
Fiscal year ending December 31.
MPC 2024 ANNUAL REPORT
15

Disclosures Regarding Forward-Looking Statements
This summary annual report wrap contains forward-looking statements regarding MPC. These forward-looking statements may relate to, among other things, MPC’s expectations, 
estimates and projections concerning its business and operations, financial priorities, strategic plans and initiatives, capital return plans, capital expenditure plans, operating 
cost reduction objectives, and environmental, social and governance (“ESG”) plans and goals, including those related to greenhouse gas emissions and intensity reduction 
targets, freshwater withdrawal intensity reduction targets, inclusion and ESG reporting. Forward-looking and other statements regarding our ESG plans and goals are not an 
indication that these statements are material to investors or are required to be disclosed in our filings with the Securities Exchange Commission (“SEC”). In addition, historical, 
current, and forward-looking ESG-related statements may be based on standards for measuring progress that are still developing, internal controls and processes that continue 
to evolve, and assumptions that are subject to change in the future. You can identify forward-looking statements by words such as “anticipate,” “believe,” “commitment,” “could,” 
“design,” “endeavor,” “estimate,” “expect,” “focus,” “forecast,” “goal,” “guidance,” “intend,” “may,” “objective,” “opportunity,” “outlook,” “plan,” “policy,” “position,” “potential,” 
“predict,” “priority,” “progress,” “project,” “prospective,” “pursue,” “seek,” “should,” “strategy,” “strive,” “target,” “trends,” “will,” “would” or other similar expressions that convey 
the uncertainty of future events or outcomes. MPC cautions that these statements are based on management’s current knowledge and expectations and are subject to certain 
risks and uncertainties, many of which are outside of the control of MPC, that could cause actual results and events to differ materially from the statements made herein. Factors 
that could cause MPC’s actual results to differ materially from those implied in the forward-looking statements include but are not limited to: political or regulatory developments, 
including changes in governmental policies relating to refined petroleum products, crude oil, natural gas, natural gas liquids “NGLs”, or renewables, or taxation; volatility in and 
degradation of general economic, market, industry or business conditions, including as a result of pandemics, other infectious disease outbreaks, natural hazards, extreme 
weather events, regional conflicts such as hostilities in the Middle East and in Ukraine, inflation or rising interest rates; the regional, national and worldwide demand for refined 
products and renewables and related margins; the regional, national or worldwide availability and pricing of crude oil, natural gas, NGLs and other feedstocks and related pricing 
differentials; the adequacy of capital resources and liquidity and timing and amounts of free cash flow necessary to execute our business plans, effect future share repurchases 
and to maintain or grow our dividend; the success or timing of completion of ongoing or anticipated projects; the timing and ability to obtain necessary regulatory approvals and 
permits and to satisfy other conditions necessary to complete planned projects or to consummate planned transactions within the expected timeframes if at all; the availability of 
desirable strategic alternatives to optimize portfolio assets and the ability to obtain regulatory and other approvals with respect thereto; the inability or failure of our joint venture 
partners to fund their share of operations and development activities; the financing and distribution decisions of joint ventures we do not control; our ability to successfully 
implement our sustainable energy strategy and principles and to achieve our ESG plans and goals within the expected timeframes if at all; changes in government incentives for 
emission-reduction products and technologies; the outcome of research and development efforts to create future technologies necessary to achieve our ESG plans and goals; 
our ability to scale projects and technologies on a commercially competitive basis; changes in regional and global economic growth rates and consumer preferences, including 
consumer support for emission-reduction products and technology; industrial incidents or other unscheduled shutdowns affecting our refineries, machinery, pipelines, processing, 
fractionation and treating facilities or equipment, means of transportation, or those of our suppliers or customers; the imposition of windfall profit taxes, maximum refining margin 
penalties or minimum inventory requirements on companies operating within the energy industry in California or other jurisdictions; the impact of adverse market conditions or 
other similar risks to those identified herein affecting MPLX; and the factors set forth under the headings “Risk Factors” and “Disclosures Regarding Forward-Looking Statements” 
in MPC’s Annual Report on Form 10-K for the year ended Dec. 31, 2024, which forms part of this report, and in other filings with the SEC.  
Pictured above: Marine loading dock at MPC’s refinery in Garyville, Louisiana