Marathon Petroleum Corp — Director's Dealing 2012

May 29, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Marathon Petroleum Corp (MPC)
CIK: 0001510295
Period of Report: 2012-05-25

Reporting Person: Nichols Rodney P. (Sr. VP, HR & Admin. Services)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-25	Common Stock	M	3903	$11.92	Acquired	23316	Direct
2012-05-25	Common Stock	F	2106	$36.88	Disposed	21210	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-25	Stock Option (right to buy)	$11.92	M	3903	Disposed	2012-05-28	Common Stock (3903)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3578.372	Indirect
Common Stock	2194	Indirect
Common Stock	8463	Indirect

Footnotes

F1: Includes 20.316 shares acquired pursuant to dividend reinvestment and previously not reported pursuant to Rule 16a-11.

F2: By Barb Nichols Revocable Trust Agreement (wife).

F3: By Rodney P. Nichols Revocable Trust Agreement.

F4: The option reflected in this row represents an adjusted option resulting from the spin-off of Issuer from Marathon Oil Corporation on June 30, 2011 (the "Spin-Off"). All shares subject to this option were fully vested and exercisable as of the Spin-Off.