EX-10.1



 Exhibit 10.1 

EXECUTION VERSION 
 VOTING AND
SUPPORT AGREEMENT 
 VOTING AND SUPPORT AGREEMENT (this “Agreement”), dated as of April 29, 2018,
by and among Andeavor, a Delaware corporation (the “Company”), Marathon Petroleum Corporation, a Delaware Corporation (“Parent”), Mahi Inc., a Delaware corporation and a wholly owned subsidiary of Parent
(“Merger Sub 1”), Mahi LLC, a Delaware limited liability company and a wholly owned subsidiary of Parent (“Merger Sub 2”) and Paul L. Foster and Franklin Mountain Investments, LP (together, the
“Stockholder”). Capitalized terms used and not otherwise defined herein shall have the respective meanings ascribed to them in the Merger Agreement (as defined below). 

RECITALS 

WHEREAS, as of the date hereof, the Stockholder is the record and Beneficial Owner (as defined below) of the Existing Shares
(as defined below), and has sole investment power over, the Existing Shares; 
 WHEREAS, concurrently with the execution of
this Agreement, Parent, Merger Sub 1, Merger Sub 2 and the Company have entered into an Agreement and Plan of Merger, dated as of the date hereof (the “Merger Agreement”), providing for, among other things and subject to the terms
and conditions of the Merger Agreement: (i) the merger of Merger Sub 1 with and into the Company, with the Company being the surviving entity (the “First Merger”), and (ii) immediately upon the consummation of the First
Merger, the merger of the surviving entity of the First Merger with and into Merger Sub 2, with Merger Sub 2 being the surviving entity of such second merger (the “Second Merger,” and, together with the First Merger, the
“Merger”) upon the terms and subject to the conditions set forth in the Merger Agreement. 
 WHEREAS, the
Stockholder has been provided with the execution copy of the Merger Agreement and acknowledges that the Stockholder will benefit directly and substantially from the consummation of the transactions contemplated thereby; 

WHEREAS, as a condition and inducement to the willingness of Parent, Merger Sub 1 and Merger Sub 2 to enter into the Merger
Agreement, Parent, Merger Sub 1 and Merger Sub 2 have required that the Stockholder agree to, and the Stockholder has agreed to, enter into this Agreement; 

WHEREAS, as of the date hereof and subject to the terms and conditions herein, the Stockholder has determined to vote in favor
of the Merger and the transactions contemplated by the Merger Agreement and in furtherance thereof has agreed to enter into this Agreement. 

NOW, THEREFORE, in consideration of the foregoing and the representations, warranties, covenants and agreements contained
herein, and intending to be legally bound hereby, the parties hereto hereby agree as follows: 
 1. Agreement to Vote.

 (a) From the date hereof until the Expiration Date, at every meeting of the stockholders of the Company called with
respect to any of the following, and at every adjournment or postponement thereof, and on every action or approval by written consent of the stockholders of 







 
the Company with respect to any of the following, the Stockholder hereby irrevocably and unconditionally agrees to be present (in person or by proxy) and vote (or cause to be voted), or (with
respect to any written consent solicitation) deliver (or cause to be delivered) a written consent with respect to, all of the Subject Shares: (A) in favor of the adoption of the Merger Agreement and the approval of the transactions contemplated
thereby, including the Merger, and any related proposal in furtherance thereof; (B) in favor of any proposal to adjourn or postpone the Company Stockholders Meeting to a later date if there are not sufficient votes to adopt the Merger Agreement
and/or if there are not sufficient shares present in person or by proxy at the Company Stockholders Meeting to constitute a quorum, (C) in favor of any other matter necessary to consummate the transactions contemplated by the Merger Agreement
and (D) against the following actions: (1) any merger, tender offer, exchange offer, sale of all or substantially all assets, recapitalization, reorganization, consolidation, share exchange, business combination, liquidation, dissolution
or similar transaction or series of transactions involving the Company, any of its Subsidiaries and any other Person (including any Company Acquisition Proposal), other than the Merger and (2) any other action or agreement that would reasonably
be expected to impede, frustrate, interfere with, delay, postpone or adversely affect the Merger or any other transaction contemplated by the Merger Agreement, including the consummation thereof. 

(b) At any meeting of the stockholders of the Company to which Section 1(a) above is applicable, the
Stockholder shall, or shall direct the holder(s) of record of all of the Subject Shares on any applicable record date to, appear, in person or by proxy, at each meeting or otherwise cause all of the Subject Shares to be counted as present thereat
for purposes of establishing a quorum. The Stockholder shall provide Parent with at least five Business Days’ written notice prior to signing any action proposed to be taken by written consent with respect to any Subject Shares. The obligations
of the Stockholder under this Agreement, including this Section 1, shall not apply if an Adverse Company Recommendation Change has occurred. 

(c) Solely in the event of a failure by the Stockholder to act in accordance with its obligations pursuant to
Section 1(a) and Section 1(b) of this Agreement, and except as otherwise expressly provided herein, the Stockholder hereby irrevocably grants to and appoints Parent (and any designee thereof) as
the Stockholder’s proxy and attorney-in-fact (with full power of substitution), for and in the name, place and stead of the Stockholder, to (i) represent the
Subject Shares and (ii) vote, execute written consents and otherwise act (by voting at any meeting of stockholders of the Company or otherwise) with respect to the Subject Shares, in the case of each of clause (i) and clause (ii),
regarding the matters referred to in Section 1(a) and Section 1(b) until, subject to Law, the Expiration Date, to the same extent and with the same effect as the Stockholder could do under Law. The
Stockholder intends the proxy granted pursuant to this Section 1(c) to be irrevocable and coupled with an interest and hereby revokes any proxy previously granted by the Stockholder with respect to the Subject Shares. The
Stockholder hereby ratifies and confirms all actions that the proxy appointed hereunder may lawfully do or cause to be done in accordance with this Agreement. Notwithstanding the foregoing, this proxy shall automatically be revoked on the Expiration
Date. Parent may terminate this proxy with respect to the Stockholder at any time at its sole election by written notice provided to the Stockholder. The parties acknowledge and agree that neither Parent, nor any of its Affiliates, shall owe any
duty (fiduciary or otherwise), or incur any liability of any kind to the Stockholder or any of its Affiliates, in connection with or as a result of the exercise of the powers granted to Parent by this Section 1(c). 

  
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 (d) The following capitalized terms, as used in this Agreement, shall have the
meanings set forth below: 
 (i) “Beneficial Owner” shall be interpreted in accordance with
the term “beneficial owner” as defined in Rule 13d-3 adopted by the SEC under the Exchange Act; provided that notwithstanding the generality of the foregoing, for purposes of
determining Beneficial Ownership, a Person shall be deemed to be the Beneficial Owner of any securities which such Person has, at any time during the term of this Agreement, the right to acquire pursuant to any agreement, arrangement or
understanding or upon the exercise of conversion rights, exchange rights, warrants or options, or otherwise (irrespective of whether the right to acquire such securities is exercisable immediately or only after the passage of time (including the
passage of time in excess of sixty days), the satisfaction of any conditions, the occurrence of any event or any combination of the foregoing). The terms “Beneficial Ownership,” “Beneficially Own” and
“Beneficially Owned” shall have correlative meanings. 
 (ii) “Existing
Shares” means, with respect to Stockholder, the number of Company Shares Beneficially Owned and/or owned of record by Stockholder as of the date hereof, as set forth on Schedule A. 

(iii) “Subject Shares” means, with respect to Stockholder, Stockholder’s Existing Shares,
together with any Company Shares or other voting capital stock of the Company of which Stockholder acquires Beneficial Ownership on or after the date hereof (but excluding any Shares Transferred pursuant to the Trading Plan). 

2. Representations and Warranties of the Stockholder. The Stockholder hereby represents and warrants to Parent, Merger
Sub 1 and Merger Sub 2 with respect to the Stockholder and the Stockholder’s ownership of the Subject Shares as follows: 

(a) Authority. The Stockholder has all requisite power and authority to enter into this Agreement and to consummate the
transactions contemplated hereby. This Agreement has been duly authorized, executed and delivered by the Stockholder and constitutes a valid and binding obligation of the Stockholder enforceable against the Stockholder in accordance with its terms,
subject to the Bankruptcy and Equity Exception. Other than as provided in the Merger Agreement and except for any filings by the Stockholder with the Securities and Exchange Commission (the “SEC”), the execution, delivery and
performance by the Stockholder of this Agreement does not require any action by or in respect of, or any notice, report or other filing by the Stockholder with or to, or any consent, registration, approval, permit or authorization from, any
Governmental Entity other than any actions or filings the absence of which would not reasonably be expected to prevent, materially delay or materially impair the consummation of the transactions contemplated by the Merger Agreement or the
Stockholder’s ability to observe and perform the Stockholder’s obligations hereunder. 
 (b) No Conflicts.
Assuming compliance with the matters referred to in Section 2(a), neither the execution and delivery of this Agreement, nor the consummation of the transactions contemplated hereby, nor compliance with the terms hereof,
will (with or without notice or the passage of time or both) violate, conflict with or result in a breach of, or constitute a default (with or without notice or lapse of time or both) under the Stockholder’s organizational documents or under
any Contract of, or Law applicable to, the Stockholder or to the Stockholder’s property or assets. 

  
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 (c) The Subject Shares. The Stockholder is the sole record and beneficial
owner of, or is a trust or estate that is the sole record holder of and whose beneficiaries are the sole beneficial owners of, and has good and marketable title to, all of the Existing Shares, free and clear of any and all Liens and free of any
other limitation or restriction (including any restriction on the right to vote, sell or otherwise dispose of any Existing Shares), except for (i) any such Liens arising hereunder or under the Merger Agreement, (ii) Liens imposed by
federal or state securities laws, (iii) Liens imposed pursuant to any written policies of the Company with respect to restrictions upon the trading of securities under applicable securities laws, (iv) Liens arising under any contract
governing the terms of any awards granted to such Stockholder pursuant to a Stock Plan and (v) that certain trading plan, dated as of November 14, 2017, by and between Goldman Sachs & Co. LLC and Stockholder, for purposes of Rule 10b5-1 of the Exchange Act that is in effect as of the date of this Agreement (the “Trading Plan”), other than any of the foregoing that would not prevent, materially delay or materially impair, the
consummation of the transactions contemplated by the Merger Agreement or the Stockholder’s ability to observe and perform the Stockholder’s obligations hereunder. The Stockholder does not Beneficially Own or own of record any Company
Shares other than the Existing Shares. The Stockholder has, and will have at the time of each Company Stockholders Meeting occurring prior to the Merger with respect to the matters covered by Section 1(a), the sole right to
vote and direct the vote of, and to dispose of and direct the disposition of, the Subject Shares, and none of the Subject Shares is subject to any agreement, arrangement or restriction with respect to the Subject Shares that would prevent or delay
the Stockholder’s ability to perform its obligations hereunder. There are no agreements or arrangements of any kind, contingent or otherwise, obligating such Stockholder to Transfer (as defined below), or cause to be Transferred, any of the
Existing Shares, and no Person has any contractual or other right or obligation to purchase or otherwise acquire any of the Subject Shares. 

(d) Reliance by Parent, Merger Sub 1 and Merger Sub 2. The Stockholder understands and acknowledges that Parent Merger
Sub 1 and Merger Sub 2 are entering into the Merger Agreement in reliance upon the Stockholder’s execution, delivery and performance of this Agreement and upon the representations and warranties, covenants and other agreements of the
Stockholder contained in this Agreement. 
 (e) Litigation. As of the date hereof, there is no (i) action,
proceeding or investigation pending or threatened against the Stockholder or any of its Affiliates; or (ii) outstanding Order to which the Stockholder or any of its Affiliates are subject or bound, in each case, that would reasonably be
expected to or seeks to prevent, materially delay or materially impair the exercise by Parent of its rights under this Agreement or the performance by the Stockholder of its obligations under this Agreement. 

(f) Other Agreements. Except for this Agreement, the Stockholder has not: (i) taken any action that would or would
reasonably be expected to (A) constitute or result in a breach hereof; (B) make any representation or warranty of the Stockholder set forth in this Section 2 untrue or incorrect; or (C) have the effect of
preventing or disabling the Stockholder from performing any of its obligations under this Agreement; (ii) granted any proxies or powers of attorney, or any other authorization or consent with respect to any of the Subject Shares with respect to
the matters set forth in Section 1(a); or (iii) deposited any of the Subject Shares into a separate voting trust or entered into a voting agreement or arrangement with respect to any of the Subject Shares. 

  
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 (g) Finders Fees. No broker, investment bank, financial advisor or other
Person is entitled to any broker’s, finder’s, financial adviser’s or similar fee or commission in connection with the transactions contemplated hereby based upon arrangements made by or on behalf of the Stockholder. 

(h) Stockholder Has Adequate Information. The Stockholder acknowledges that the Stockholder is a sophisticated investor
with respect to the Subject Shares and has adequate information concerning the business and financial condition of the Company to make an informed decision regarding the transactions contemplated by this Agreement and has, independently and without
reliance upon any of Parent, Merger Sub 1, Merger Sub 2, the Company or any Affiliate of any of the foregoing, and based on such information as the Stockholder has deemed appropriate, made his or its own analysis and decision to enter into this
Agreement. The Stockholder acknowledges that none of Parent, Merger Sub 1, Merger Sub 2, the Company or any Affiliate of any of the foregoing has made or is making any representation or warranty, whether express or implied, of any kind or character
except as expressly set forth in this Agreement. The Stockholder acknowledges that it has had the opportunity to seek independent legal advice prior to executing this Agreement. 

3. Representations and Warranties of Parent, Merger Sub 1 and Merger Sub 2. Each of Parent, Merger Sub 1 and Merger Sub
2 has all requisite power and authority to enter into this Agreement and to consummate the transactions contemplated hereby, subject only to (a) the adoption of the Merger Agreement by Parent as the sole stockholder of Merger Sub 1 and the sole
member of Merger Sub 2 (each of which will occur promptly following execution of the Merger Agreement) and (b) obtaining the Requisite Parent Vote. This Agreement has been duly authorized, executed and delivered by Parent, Merger Sub 1 and
Merger Sub 2 and constitutes a valid and binding obligation of Parent, Merger Sub 1 and Merger Sub 2 enforceable against Parent, Merger Sub 1 and Merger Sub 2 in accordance with its terms, subject to the Bankruptcy and Equity Exception. Other than
as provided in the Merger Agreement and any filings by Parent, Merger Sub 1 and Merger Sub 2 with the SEC, the execution, delivery and performance by Parent, Merger Sub 1 and Merger Sub 2 of this Agreement does not require any consent, approval,
authorization or permit of, action by, filing with or notification to any Governmental Entity, other than any consent, approval, authorization, permit, action, filing or notification the failure of which to make or obtain would not, individually or
in the aggregate, be reasonably expected to prevent or materially delay the consummation of the Merger. 
 4. Restrictions
on Transfer of Shares and Proxies. The Stockholder covenants and agrees that during the period from the date of this Agreement through the Expiration Date, the Stockholder will not, directly or indirectly, (i) transfer, assign, sell,
pledge, encumber, hypothecate or otherwise dispose of (whether by merger, by tendering into any tender or exchange offer, by testamentary disposition, by operation of law or otherwise) or consent to any of the foregoing
(“Transfer”), or cause to be Transferred, any of the Subject Shares; (ii) grant any proxies or powers of attorney, or any other authorization or consent with respect to any or all of its Subject Shares in respect of any matter
addressed by this Agreement; (iii) deposit any of the Subject Shares into a voting trust or enter into a voting agreement or arrangement with respect to any of the Subject Shares or grant any proxy or power of attorney with respect thereto that
is inconsistent with this Agreement, (iv) 

  
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enter into any Contract with respect to the Transfer of any Subject Shares; or (v) take any other action, that would restrict, limit or interfere with the performance of the
Stockholder’s obligations hereunder except for any Transfers pursuant to the Trading Plan. The foregoing restrictions on Transfers of Subject Shares shall not prohibit any such Transfers by the Stockholder in connection with the transactions
contemplated by the Merger Agreement. Any purported Transfer of the Subject Shares in violation of this Section 4 shall be null and void ab initio. 

5. Stop Transfer; Changes in Subject Shares. The Stockholder hereby agrees with, and covenants to, Parent that
(a) this Agreement and the obligations hereunder shall attach to the Subject Shares and shall be binding upon any Person or entity to which legal or Beneficial Ownership shall pass, whether by operation of Law or otherwise, including its
successors or assigns; and (b) such Stockholder shall not request that the Company register the transfer (book-entry or otherwise) of any certificate or uncertificated interest representing any or all of its Subject Shares. In the event of a
stock split, stock dividend or distribution, or any change in the Company Shares by reason of any split-up, reverse stock split, recapitalization, combination, reclassification, exchange of Company Shares or
the like, the terms “Existing Shares” and “Subject Shares” shall be deemed to refer to and include such Company Shares as well as all such stock splits, dividends and distributions and any securities into which or for which any
or all of such Company Shares may be converted, changed or exchanged or which are otherwise received in such transaction. 

6. Documentation and Information. The Stockholder hereby (a) consents to and authorizes the publication and
disclosure by the Company, Parent and/or their respective Affiliates of its identity and holdings of the Subject Shares and the nature of its commitments and obligations under this Agreement in any announcement, the Prospectus/Proxy Statement or any
other disclosure document or filing with or notice to a Governmental Entity in connection with the Merger or any of the transactions contemplated by the Merger Agreement, and (b) agrees as promptly as practicable to give to the Company and
Parent any information it may reasonably require for the preparation of any such disclosure documents. The Stockholder hereby agrees to as promptly as practicable notify the Company and Parent of any required corrections with respect to any written
information supplied by the Stockholder specifically for use in any such disclosure document, filing or notice if and to the extent that any shall contain any untrue statement of material fact or omit to state any material fact required to be stated
therein or necessary in order to make the statements therein not misleading. The Stockholder hereby agrees to notify Parent in writing as promptly as practicable of the number of any additional Subject Shares or other securities of the Company of
which the Shareholder acquires Beneficial Ownership on or after the date hereof. Parent, Merger Sub 1, Merger Sub 2 and the Company each hereby consent to and authorize the Stockholder and its Affiliates, to the extent the Stockholder or such
Affiliates determine it to be necessary or advisable under applicable Law, to publish and disclose in all documents and schedules filed with the SEC (including any amendment to the Stockholder’s Schedule 13D) and all documents and schedules
filed with the Federal Trade Commission or the Department of Justice, and any press release or other disclosure document or filing in connection with the Merger or any of the transactions contemplated by the Merger Agreement or this Agreement, a
copy of this Agreement, each of the other party’s identities and the nature of the Stockholder’s commitments and obligations under this Agreement. 

  
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 7. Waiver of Appraisal Rights. The Stockholder hereby waives, to the full
extent of the law, and agrees not to assert, any appraisal rights pursuant to Section 262 of the Delaware General Corporation Law or otherwise in connection with the Merger with respect to any and all Subject Shares. 

8. Termination. This Agreement shall automatically terminate without further action upon the earliest to occur of
(a) the Effective Time, (b) the termination of the Merger Agreement in accordance with its terms and (c) an Adverse Company Recommendation Change having occurred (the date and time at which the earliest of clause (a), clause
(b) and clause (c) occurs being, the “Expiration Date”). Upon termination of this Agreement, no party shall have any further obligations or liabilities under this Agreement; provided, however, that
(i) nothing set forth in this Section 8 shall relieve any party from liability for any breach of this Agreement occurring prior to the termination hereof; and (ii) the provisions of this
Section 8 and Section 10 through Section 17 shall survive any termination of this Agreement. 

9. Further Assurances. Each party hereto shall execute and deliver such additional instruments and other documents and
shall take such further actions as may be necessary or desirable to effectuate, carry out and comply with all of the terms of this Agreement and the transactions contemplated thereby. 

10. Notices. Any notice, request, instruction or other document or communication to be given to any party
hereunder shall be in writing and delivered personally or sent by registered or certified mail, postage prepaid, or by facsimile, email or overnight courier: 

if to Parent, Merger Sub 1 or Merger Sub 2, to: 

Marathon Petroleum Corporation 

539 South Main Street 

Findlay, OH 45840 

Attn:     General Counsel 

Email:   sgagle@marathonpetroleum.com 

Fax:      (419) 422-9223 

(with a copy, which shall not constitute notice, to): 

Jones Day 

901 Lakeside Avenue 

Cleveland, Ohio 44114 

Attn:     James P. Dougherty 

             Lyle G. Ganske 

             Benjamin L. Stulberg 

Fax: (216) 579-0212 

Email: jpdougherty@jonesday.com 

             lganske@jonesday.com 

             blstulberg@jonesday.com 

  
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 if to the Company, to: 

Andeavor 

19100 Ridgewood Pkwy 

San Antonio, TX 78259 

Attn: General Counsel 

Email: kim.rucker@andeavor.com 

Fax: (210) 745-4494 

(with a copy, which shall not constitute notice, to): 

Sullivan & Cromwell LLP 

125 Broad St. 

New York, NY 10004 

Attn:     Frank Aquila Audra D. Cohen 

Fax:      (212) 558-3588 

E-mail: aquilaf@sullcrom.com 

             cohena@sullcrom.com 

if to the Stockholder, to: 

Paul L. Foster 

123 W. Mills Avenue, Suite 600 

El Paso, TX 79901 

Fax: 

E-mail: paul.foster@wnr.com 

or to such other persons or addresses as may be designated in writing by the party to receive such notice as provided above. Any notice,
request, instruction or other document given as provided above shall be deemed given to the receiving party upon actual receipt, if delivered personally; three Business Days after deposit in the mail, if sent by registered or certified mail; upon
telephonic or written confirmation of receipt (excluding out of office replies) if sent by facsimile or email; or on the next Business Day after deposit with an overnight courier, if sent by an overnight courier. 

11. Amendment, Waivers, etc. 

(a) Subject to the provisions of applicable Law, any provision of this Agreement may be amended or waived prior to the
Effective Time if, but only if, such amendment or waiver is in writing and is signed, in the case of an amendment, by each party to this Agreement or, in the case of a waiver, by each party against whom the waiver is to be effective. 

(b) No failure or delay by any party in exercising any right, power or privilege hereunder shall operate as a waiver thereof
nor shall any single or partial exercise thereof preclude any other or further exercise thereof or the exercise of any other right, power or privilege. The rights and remedies herein provided shall be cumulative and not exclusive of any rights or
remedies provided by Law. 

  
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 12. Expenses. All costs and expenses incurred in connection with this
Agreement shall be paid by the party incurring such cost or expense. 
 13. Binding Effect; Benefit; Assignment. The
provisions of this Agreement shall be binding upon and shall inure solely to the benefit of the parties hereto and their respective successors and assigns and no provision of this Agreement is intended to, and no provision of this Agreement does,
confer any rights, benefits, remedies, obligations or liabilities hereunder upon any Person other than the parties hereto and their respective successors and assigns. No party may assign, delegate or otherwise transfer any of its rights or
obligations under this Agreement without the consent of each other party hereto. 
 14. Governing Law; Jurisdiction.

 (a) THIS AGREEMENT SHALL BE INTERPRETED, CONSTRUED AND GOVERNED BY AND IN ACCORDANCE WITH THE LAW OF THE STATE OF DELAWARE
WITHOUT REGARD TO THE CONFLICT OF LAW PRINCIPLES THEREOF TO THE EXTENT THAT SUCH PRINCIPLES WOULD HAVE THE EFFECT OF APPLYING THE LAWS OF, OR DIRECTING A MATTER TO, ANOTHER JURISDICTION. 

(b) The parties hereby irrevocably submit to the personal jurisdiction of the courts of the State of Delaware and the Federal
courts of the United States of America located in the State of Delaware solely in respect of the interpretation and enforcement of the provisions of this Agreement and the Merger Agreement and of the documents referred to in this Agreement and the
Merger Agreement, and in respect of the transactions contemplated hereby and thereby, and hereby waive, and agree not to assert, as a defense in any action, suit or proceeding for the interpretation or enforcement of this Agreement or of any such
document, that it is not subject thereto or that such action, suit or proceeding may not be brought or is not maintainable in said courts or that the venue thereof may not be appropriate or that this Agreement, the Merger Agreement or any such
document may not be enforced in or by such courts, and the parties hereto irrevocably agree that all claims relating to such action, proceeding or transactions shall be heard and determined in such a Delaware State or Federal court. The parties
hereby consent to and grant any such court jurisdiction over the person of such parties and, to the extent permitted by Law, over the subject matter of such dispute and agree that mailing of process or other papers in connection with any such action
or proceeding in the manner provided in Section 10 or in such other manner as may be permitted by Law shall be valid and sufficient service thereof. 

15. WAIVER OF JURY TRIAL. EACH PARTY ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH MAY ARISE UNDER THIS AGREEMENT
OR THE MERGER AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES, AND THEREFORE EACH SUCH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION DIRECTLY OR
INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE MERGER AGREEMENT, OR THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT OR THE MERGER AGREEMENT. EACH PARTY CERTIFIES AND ACKNOWLEDGES THAT (I) NO REPRESENTATIVE, AGENT OR ATTORNEY OF
ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, 

  
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(II) EACH PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (III) EACH PARTY MAKES THIS WAIVER VOLUNTARILY, AND (IV) EACH PARTY HAS BEEN INDUCED TO ENTER INTO THIS
AGREEMENT AND THE MERGER AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 15. 

16. Counterparts. This Agreement may be executed in any number of counterparts, each such counterpart being deemed to be
an original instrument, and all such counterparts shall together constitute the same agreement. 
 17. Entire
Agreement. This Agreement constitutes the entire agreement, and supersedes all other prior agreements, understandings, representations and warranties both written and oral, among the parties, with respect to the subject matter of this
Agreement. 
 18. Severability. The provisions of this Agreement shall be deemed severable and the invalidity or
unenforceability of any provision shall not affect the validity or enforceability of the other provisions of this Agreement. If any provision of this Agreement, or the application of such provision to any Person or any circumstance, is invalid or
unenforceable, (a) a suitable and equitable provision shall be substituted therefor in order to carry out, so far as may be valid and enforceable, the intent and purpose of such invalid or unenforceable provision and (b) the remainder of
this Agreement and the application of such provision to other Persons or circumstances shall not be affected by such invalidity or unenforceability, nor shall such invalidity or unenforceability affect the validity or enforceability of such
provision, or the application of such provision, in any other jurisdiction. 
 19. Specific Performance. The parties
agree that irreparable damage would occur in the event that any of the provisions of this Agreement were not performed in accordance with their specific terms or were otherwise breached. It is accordingly agreed that the parties shall be entitled to
an injunction or injunctions to prevent breaches of this Agreement and to enforce specifically the terms and provisions of this Agreement in the Court of Chancery of the State of Delaware, without the necessity of proving the inadequacy of money
damages as a remedy (and each party hereby waives any requirement for the securing or posting of any bond in connection with such remedy), this being in addition to any other remedy to which such party is entitled at Law or in equity. 

20. Joint Negotiation. The parties have participated jointly in negotiating and drafting this Agreement. In the event
that an ambiguity or a question of intent or interpretation arises, this Agreement shall be construed as if drafted jointly by the parties, and no presumption or burden of proof shall arise favoring or disfavoring any party by virtue of the
authorship of any provision of this Agreement. 
 [Remainder of page intentionally left blank] 

  
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 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the
date first above written. 
  

			
	 FRANKLIN MOUNTAIN INVESTMENTS, LP

	 By: Franklin Mountain Investments

G.P., LLC,
 as its general
partner

		
	 By:
	 	 /s/ Paul L. Foster

		 	 Name: Paul L. Foster

		 	 Title: President

	
	 PAUL L. FOSTER

		
	 By:
	 	 /s/ Paul L. Foster

		 	 Name: Paul L. Foster

	
	 ANDEAVOR

		
	 By:
	 	 /s/ Andeavor

		 	 Name: Gregory J. Goff

		 	 Title: President and Chief Executive Officer

	
	 MARATHON PETROLEUM CORPORATION

		
	 By:
	 	 /s/ Gary R. Heminger

		 	 Name: Gary R. Heminger

		 	 Title: Chairman and Chief Executive Officer

	
	 MAHI INC.

		
	 By:
	 	 /s/ Gary R. Heminger

		 	 Name: Gary R. Heminger

		 	 Title: President

	
	 MAHI, LLC

		
	 By:
	 	 /s/ Gary R. Heminger

		 	 Name: Gary R. Heminger

		 	 Title: President



 [Signature Page to Voting & Support Agreement] 







 SCHEDULE A 
  

					
	 Name of Stockholder
	  	No. of
Company
Shares	 
	 Paul L. Foster
	  	 	1,352,207	 
		  	  
	  
	 
	 Franklin Mountain Investments, LP
	  	 	6,489,218	 
		  	  
	  
	 
	 TOTAL:
	  	 	7,841,425