Phillips 66 (PSX) S-4 Registration of securities issued in business combination transactions

Exhibit 3.5

BY-LAWS

OF

PHILLIPS 66 COMPANY

ARTICLE I

OFFICES

SECTION 1. REGISTERED OFFICE. Phillips 66 Company (the “Corporation”) shall have and continuously maintain in the State of Delaware, a registered office and a registered agent whose business office is identical with the Corporation’s registered office.

SECTION 2. OTHER OFFICES. The Corporation may have other offices, either within or without the State of Delaware, at such place or places as the Board of Directors may from time to time select or the business of the Corporation may require.

ARTICLE II

MEETINGS OF STOCKHOLDERS

SECTION 1. ANNUAL MEETINGS. Annual meetings of stockholders for the election of directors, and for such other business as may be stated in the notice of the meeting, shall be held at such place, either within or without the State of Delaware, and at such time and date as the Board of Directors, by resolution, shall determine and as set forth in the notice of the meeting. If the date of the annual meeting shall fall upon a legal holiday, the meeting shall be held on the next succeeding business day. At each annual meeting, the stockholders entitled to vote shall elect a Board of Directors and they may transact such other corporate business as shall be stated in the notice of the meeting.

SECTION 2. SPECIAL MEETINGS. Unless otherwise provided by law or by the Certificate of Incorporation of the Corporation, special meetings of the stockholders for any purpose or purposes may be called by the President or the Secretary, or by resolution of the Board of Directors.

SECTION 3. VOTING. Each stockholder entitled to vote in accordance with the terms of the Certificate of Incorporation of the Corporation and these By-Laws may vote in person or by proxy, but no proxy shall be voted after three years from its date unless such proxy provides for a longer period. All elections for directors shall be decided by plurality vote; all other questions shall be decided by majority vote except as otherwise provided by the Certificate of Incorporation or the laws of the State of Delaware.

SECTION 4. QUORUM. Except as otherwise required by law, by the Certificate of Incorporation of the Corporation or by these By-Laws, the presence, in person or by proxy, of stockholders holding shares constituting a majority of the voting power of the Corporation shall constitute a quorum at all meetings of the stockholders. In case a quorum shall not be present at any meeting, a majority in interest of the stockholders entitled to vote thereat, present in person or by proxy, shall have the power to adjourn the meeting from time to time, without notice other than announcement at the meeting, until the requisite amount of stock entitled to vote shall be present. At any such adjourned meeting at which the requisite amount of stock entitled to vote shall be represented, any business may be transacted that might have been transacted at the meeting as originally noticed; but only those stockholders entitled to vote at the meeting as originally noticed shall be entitled to vote at any adjournment or adjournments thereof.

SECTION 5. NOTICE OF MEETINGS. Written notice, stating the place, date and time of the annual meeting or special meeting, and the general nature of the business to be considered, shall be given to each stockholder entitled to vote thereat, at his or her address as it appears on the records of the Corporation, not less than ten (10) nor more than sixty (60) days before the date of such meeting. No business other than that stated in the notice shall be transacted at any meeting without the unanimous consent of all the stockholders entitled to vote thereat.

SECTION 6. ACTION WITHOUT MEETING. Unless otherwise provided by the Certificate of Incorporation of the Corporation, any action required or permitted to be taken at any annual or special meeting of stockholders may be taken without a meeting, without prior notice and without a vote, if a consent in writing, setting forth the action so taken, shall be signed by the holders of outstanding stock having not less than the minimum number of votes that would be necessary to authorize or take such action at a meeting at which all shares entitled to vote thereon were present and voted. Prompt notice of the taking of the corporate action without a meeting by less than unanimous written consent shall be given to those stockholders who have not consented in writing.

ARTICLE III

DIRECTORS

SECTION 1. NUMBER AND TERM. The business and affairs of the Corporation shall be managed under the direction of a Board of Directors which shall consist of not less than two persons. The exact number of directors may be fixed from time to time by resolutions adopted by a majority of the entire Board of Directors. Directors shall be elected at the annual meeting of stockholders and each director shall be elected to serve until his or her successor shall be elected and shall qualify. A director need not be a stockholder.

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SECTION 2. RESIGNATIONS. Any director may resign at any time. Such resignation shall be made in writing, and shall take effect at the time specified therein, and if no time be specified, at the time of its receipt by the President or the Secretary. The acceptance of a resignation shall not be necessary to make it effective.

SECTION 3. VACANCIES. If the office of any director becomes vacant, the remaining directors in the office, though less than a quorum, by a majority vote, may appoint any qualified person to fill such vacancy, who shall hold office for the unexpired term and until his or her successor shall be duly chosen. If the office of any director becomes vacant and there are no remaining directors, the stockholders, by the affirmative vote of the holders of shares constituting a majority of the voting power of the Corporation, at a special meeting called for such purpose, may appoint any qualified person to fill such vacancy.

SECTION 4. REMOVAL. Except as hereinafter provided, any director or directors may be removed either for or without cause at any time by the affirmative vote of the holders of a majority of the voting power entitled to vote for the election of directors, at an annual meeting or a special meeting called for the purpose, and the vacancy thus created may be filled, at such meeting, by the affirmative vote of holders of shares constituting a majority of the voting power of the Corporation.

SECTION 5. MEETINGS. The newly elected directors may hold their first meeting for the purpose of organization and the transaction of business, if a quorum be present, immediately after the annual meeting of the stockholders; or the time and place of such meeting may be fixed by consent of all the Directors.

Regular meetings of the Board of Directors may be held without notice at such places and times as shall be determined from time to time by resolution of the Board of Directors.

Special meetings of the Board of Directors may be called by any director, the President, or by the Secretary on the written request of any director, on at least one day’s notice to each director (except that notice to any director may be waived in writing by such director) and shall be held at such place or places as may be determined by the Board of Directors, or as shall be stated in the call of the meeting.

Unless otherwise restricted by the Certificate of Incorporation of the Corporation or these By-Laws, members of the Board of Directors may participate in any meeting of the Board of Directors by means of a conference telephone or similar communications equipment by means of which all persons participating in the meeting can hear each other, and such participation in a meeting shall constitute presence in person at the meeting.

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SECTION 7. QUORUM. A majority of the Directors shall constitute a quorum for the transaction of business. If at any meeting of the Board of Directors there shall be less than a quorum present, a majority of those present may adjourn the meeting from time to time until a quorum is obtained, and no further notice thereof need be given other than by announcement at the meeting which shall be so adjourned. The vote of the majority of the Directors present at a meeting at which a quorum is present shall be the act of the Board of Directors unless the Certificate of Incorporation of the Corporation or these By-Laws shall require the vote of a greater number.

SECTION 8. COMPENSATION. Directors shall not receive any stated salary for their services as directors or as members of committees, but by resolution of the Board of Directors a fixed fee and expenses of attendance may be allowed for attendance at each meeting. Nothing herein contained shall be construed to preclude any director from serving the Corporation in any other capacity as an officer, agent or otherwise, and receiving compensation therefore.

SECTION 9. ACTION WITHOUT MEETING. Any action required or permitted to be taken at any meeting of the Board of Directors or of any committee thereof may be taken without a meeting if a written consent thereto is signed by all members of the Board of Directors or of such committee, as the case may be, and such written consent is filed with the minutes of proceedings of the Board of Directors or such committee.

ARTICLE IV

OFFICERS

SECTION 1. OFFICERS. The officers of the Corporation shall be a President, one or more Vice Presidents, a Treasurer and a Secretary, all of whom shall be elected by the Board of Directors and shall hold office until their successors are duly elected and qualified. In addition, the Board of Directors may elect such Assistant Secretaries and Assistant Treasurers as they may deem proper. The Board of Directors may appoint such other officers and agents as it may deem advisable, who shall hold their offices for such terms and shall exercise such powers and perform such duties as shall be determined from time to time by the Board of Directors.

SECTION 2. PRESIDENT. The President shall be the Chief Operating Officer of the Corporation. He or she shall have the general powers and duties of supervision and management usually vested in the office of President of a corporation. The President shall have the power to execute bonds, mortgages and other contracts on behalf of the Corporation, and to cause the seal to be affixed to any instrument requiring it, and when so affixed the seal shall be attested to by the signature of the Secretary or an Assistant Secretary.

SECTION 3. VICE PRESIDENTS. Each Vice President shall have such powers and shall perform such duties as shall be assigned to him or her by the Board of Directors or the President.

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SECTION 4. TREASURER. The Treasurer shall have the custody of the corporate funds and securities of the Corporation and shall keep full and accurate account of receipts and disbursements in books belonging to the Corporation. He or she shall deposit all moneys and other valuables in the name and to the credit of the Corporation in such depositaries as may be designated by the Board of Directors. He or she shall disburse the funds of the Corporation as may be ordered by the Board of Directors, the Chairman of the Board, or the President, taking proper vouchers for such disbursements. He or she shall render to the Chairman of the Board, the President and Board of Directors at the regular meetings of the Board of Directors, or whenever they may request it, an account of all his or her transactions as Treasurer and of the financial condition of the Corporation. If required by the Board of Directors, he or she shall give the Corporation a bond for the faithful discharge of his or her duties in such amount and with such surety as the Board of Directors shall prescribe.

SECTION 5. SECRETARY. The Secretary shall give, or cause to be given, notice of all meetings of stockholders and of the Board of Directors and all other notices required by law or by these By-Laws, and in case of his or her absence or refusal or neglect so to do, any such notice may be given by any person thereunto directed by the Chairman of the Board or the President, or by the Board of Directors, upon whose request the meeting is called as provided in these By-Laws. He or she shall record all the proceedings of the meetings of the Board of Directors, any committees thereof and the stockholders of the Corporation in a book to be kept for that purpose, and shall perform such other duties as may be assigned to him or her by the Board of Directors or the President. He or she shall have the custody of the seal of the Corporation and shall affix the same to all instruments requiring it, when authorized by the Board of Directors or the President, and attest to the same.

SECTION 7. GENERAL TAX OFFICER. The General Tax Officer shall prepare, execute and deliver all instruments and documents necessary or desirable in connection with the tax liabilities of the Corporation including tax returns of any kind to be filed with any federal, state, local or foreign government. He or she shall represent the Corporation in connection with administrative inquiries, hearings, protests and audits relating to tax matters and compromise, settle or otherwise resolve all tax claims arising therefrom. He or she shall request and receive from governmental authorities such rulings and determinations respecting tax matters affecting the Corporation as deemed to be in the best interests of the Corporation and shall perform such other duties as may be assigned to him or her by the Board of Directors or the President.

SECTION 8. ASSISTANT TREASURERS, ASSISTANT SECRETARIES, TAX ADMINISTRATION OFFICER AND ASSISTANT TAX ADMINISTRATIVE OFFICER. Assistant Treasurers, Assistant Secretaries, a Tax Administration Officer and Assistant Tax Administration Officers, if any, shall be elected and shall have such powers and shall perform such duties as shall be assigned to them, respectively, by the Board of Directors and the President.

SECTION 9. INDEMNIFICATION. Each person who was or is made a party or is threatened to be made a party to or is otherwise involved in any action, suit or proceeding, whether civil, criminal, administrative or investigative (hereinafter a “proceeding”), by reason of the fact that he is or was a director, officer or employee of the Corporation or is or was serving at the

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request of the Corporation as a director, officer or employee of another corporation or of a partnership, joint venture, trust or other enterprise, including service with respect to an employee benefit plan (hereinafter an “indemnitee”), whether the basis of such proceeding is alleged action in an official capacity as a director, officer or employee or in any other capacity while serving as a director, officer or employee, shall be indemnified and held harmless by the Corporation to the fullest extent authorized by the Delaware General Corporation Law, as the same exists or may hereafter be amended (but, in the case of any such amendment, only to the extent that such amendment permits the Corporation to provide broader indemnification rights than such law permitted the Corporation to provide prior to such amendment), against all expense, liability and loss (including attorneys’ fees, judgments, fines, Employee Retirement Income Security Act of 1974 excise taxes or penalties and amounts paid in settlement) reasonably incurred or suffered by such indemnitee in connection therewith; provided, however, that, except as provided in this Section with respect to proceedings to enforce rights to indemnification, the Corporation shall indemnify any such indemnitee in connection with a proceeding (or part thereof) initiated by such indemnitee only if such proceeding (or part thereof) was authorized by the Board of Directors of the Corporation.

The right to indemnification conferred in this Section shall include the right to be paid by the Corporation the expenses incurred in defending any such proceeding in advance of its final disposition (hereinafter an “advancement of expenses”); provided, however, that, if the Delaware General Corporation Law requires, an advancement of expenses incurred by an indemnitee in his or her capacity as a director or officer (and not in any other capacity in which service was or is rendered by such indemnitee, including, without limitation, service to an employee benefit plan) shall be made only upon delivery to the Corporation of an undertaking, by or on behalf of such indemnitee, to repay all amounts so advanced if it shall ultimately be determined by final judicial decision from which there is no further right to appeal (hereinafter a “final adjudication”) that such indemnitee is not entitled to be indemnified for such expenses under this Section or otherwise. The rights to indemnification and to the advancement of expenses conferred in this Section shall be contract rights and such rights shall continue as to an indemnitee who has ceased to be a director, officer or employee and shall inure to the benefit of the indemnitee’s heirs, executors and administrators.

If a claim under this Section is not paid in full by the Corporation within sixty (60) days after written claim had been received by the Corporation, except in the case of a claim for an advancement of expenses, in which case the applicable period shall be twenty (20) days, the indemnitee may at any time thereafter bring suit against the Corporation to recover the unpaid amount of the claim. If successful in whole or in part in any such suit, or in a suit brought by the Corporation to recover an advancement of expenses pursuant to the terms of an undertaking, the indemnitee shall be entitled to be paid also the expense of prosecuting or defending such suit. In (i) any suit brought by the indemnitee to enforce a right to indemnification hereunder (but not in a suit brought by the indemnitee to enforce a right to an advancement of expenses) it shall be a defense that, and (ii) in any suit by the Corporation to recover an advancement of expenses pursuant to the terms of an undertaking the Corporation shall be entitled to recover such expenses upon a final adjudication that, the indemnitee has not met any applicable standard for indemnification set forth in the Delaware General Corporation Law. Neither the failure of the Corporation (including its Board of Directors, independent legal counsel, or its stockholders) to

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have made a determination prior to the commencement of such suit that indemnification of the indemnitee is proper in the circumstances because the indemnitee has met the applicable standard of conduct set forth in the Delaware General Corporation Law, nor an actual determination by the Corporation (including its Board of Directors, independent legal counsel, or its stockholders) that the indemnitee has not met such applicable standard of conduct, shall create a presumption that the indemnitee has not met the applicable standard of conduct or, in the case of such a suit brought by the indemnitee, be a defense to such suit. In any suit brought by the indemnitee to enforce a right to indemnification or to an advancement of expenses hereunder, or by the Corporation to recover an advancement of expenses pursuant to the terms of an undertaking, the burden of proving that the indemnitee is not entitled to be indemnified, or to such advancement of expenses, under this Section or otherwise shall be on the Corporation.

The rights to indemnification and to the advancement of expenses conferred in this Section shall not be exclusive of any other right which any person may have or hereafter acquire under any statute, the Corporation’s Certificate of Incorporation, By-Laws, agreement, vote of stockholders or disinterested directors or otherwise.

The Corporation may maintain insurance, at its expense, to protect itself and any director, officer, employee or agent of the Corporation or another corporation, partnership, joint venture, trust or other enterprise against any expense, liability or loss, whether or not the Corporation would have the power to indemnify such person against such expense, liability or loss under the Delaware General Corporation Law.

The Corporation may, to the extent authorized from time to time by the Board of Directors, grant rights to indemnification, and rights to be paid by the Corporation the expenses incurred in defending any proceeding in advance of its final disposition, to any agent of the Corporation or to any agent of another corporation or of a partnership, joint venture, trust or other enterprise, including any employee benefit plan, serving as such agent at the request of the Corporation, to the fullest extent of the provisions of this Section with respect to the indemnification and advancement of expenses of directors, officers and employees of the Corporation.

ARTICLE V

MISCELLANEOUS

SECTION 1. CERTIFICATES OF STOCK. A certificate of stock shall be issued to each stockholder certifying the number of shares owned by such stockholder in the Corporation. Certificates of stock of the Corporation shall be of such form and device as the Board of Directors may from time to time determine.

SECTION 2. LOST CERTIFICATES. A new certificate of stock may be issued in the place of any certificate theretofore issued by the Corporation, alleged to have been lost or destroyed, and the Board of Directors may, in its discretion, require the owner of the lost or destroyed certificate, or such owner’s legal representatives, to give the Corporation a bond, in such sum as they may direct, not exceeding double the value of the stock, to indemnify the Corporation against any claim that may be made against it on account of the alleged loss of any such certificate, or the issuance of any such new certificate.

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SECTION 3. TRANSFER OF SHARES. The shares of stock of the Corporation shall be transferable only upon its books by the holders thereof in person or by their duly authorized attorneys or legal representatives, and upon such transfer the old certificates shall be surrendered to the Corporation by the delivery thereof to the person in charge of the stock and transfer books and ledgers, or to such other person as the Board of Directors may designate, by whom they shall be cancelled, and new certificates shall thereupon be issued. A record shall be made of each transfer and whenever a transfer shall be made for collateral security, and not absolutely, it shall be so expressed in the entry of the transfer.

SECTION 4. STOCKHOLDERS RECORD DATE. In order that the Corporation may determine the stockholders entitled to notice of or to vote at any meeting of stockholders or any adjournment thereof, or to express consent to corporate action in writing without a meeting, or entitled to receive payment of any dividend or other distribution or allotment of any rights, or entitled to exercise any rights in respect of any change, conversion or exchange of stock or for the purpose of any other lawful action, the Board of Directors may fix a record date, which record date shall not precede the date upon which the resolution fixing the record date is adopted by the Board of Directors and which record date: (1) in the case of determination of stockholders entitled to vote at any meeting of stockholders or adjournment thereof, shall, unless otherwise required by law, not be more than sixty nor less than ten days before the date of such meeting; (2) in the case of determination of stockholders entitled to express consent to corporate action in writing without a meeting, shall not be more than ten days from the date upon which the resolution fixing the record date is adopted by the Board of Directors; and (3) in the case of any other action, shall not be more than sixty days prior to such other action. If no record date is fixed: (1) the record date for determining stockholders entitled to notice of or to vote at a meeting of stockholders shall be at the close of business on the day next preceding the day on which notice is given, or, if notice is waived, at the close of business on the day next preceding the day on which the meeting is held; (2) the record date for determining stockholders entitled to express consent to corporate action in writing without a meeting when no prior action of the Board of Directors is required by law, shall be the first day on which a signed written consent setting forth the action taken or proposed to be taken is delivered to the Corporation in accordance with applicable law, or, if prior action by the Board of Directors is required by law, shall be at the close of business on the day on which the Board of Directors adopts the resolution taking such prior action; and (3) the record date for determining stockholders for any other purpose shall be at the close of business on the day on which the Board of Directors adopts the resolution relating thereto. A determination of stockholders of record entitled to notice of or to vote at a meeting of stockholders shall apply to any adjournment of the meeting; provided, however, that the Board of Directors may fix a new record date for the adjourned meeting.

SECTION 5. DIVIDENDS. Subject to the provisions of the Certificate of Incorporation of the Corporation, the Board of Directors may, out of funds legally available therefore at any regular or special meeting, declare dividends upon stock of the Corporation as and when they deem appropriate. Before declaring any dividend there may be set apart out of any funds of the Corporation available for dividends, such sum or sums as the Board of Directors from time to time in their discretion deem proper for working capital or as a reserve fund to meet contingencies or for equalizing dividends or for such other purposes as the Board of Directors shall deem conducive to the interests of the Corporation.

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SECTION 6. SEAL. The corporate seal of the Corporation shall be in such form as shall be determined by resolution of the Board of Directors. Said seal may be used by causing it or a facsimile thereof to be impressed or affixed or reproduced or otherwise imprinted upon the subject document or paper.

SECTION 7. FISCAL YEAR. The fiscal year of the Corporation shall be determined by resolution of the Board of Directors.

SECTION 8. NOTICE AND WAIVER OF NOTICE. Whenever any notice is required to be given under these By-Laws, personal notice is not required unless expressly so stated, and any notice so required shall be deemed to be sufficient if given by depositing the same in the United States mail, postage prepaid, addressed to the person entitled thereto at his or her address as it appears on the records of the Corporation, and such notice shall be deemed to have been given on the day of such mailing. Stockholders not entitled to vote shall not be entitled to receive notice of any meetings except as otherwise provided by law. Whenever any notice is required to be given under the provisions of any law, or under the provisions of the Certificate of Incorporation of the Corporation or of these By-Laws, a waiver thereof, in writing and signed by the person or persons entitled to said notice, whether before or after the time stated therein, shall be deemed equivalent to such required notice.

ARTICLE VI

AMENDMENTS

These By-Laws may be altered, amended or repealed at any annual meeting of the stockholders (or at any special meeting thereof if notice of such proposed alteration, amendment or repeal to be considered is contained in the notice of such special meeting) by the affirmative vote of the holders of shares constituting a majority of the voting power of the Corporation. Except as otherwise provided in the Certificate of Incorporation of the Corporation, the Board of Directors may by majority vote of those present at any meeting at which a quorum is present alter, amend or repeal these By-Laws, or enact such other By-Laws as in their judgment may be advisable for the regulation and conduct of the affairs of the Corporation.

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Adopted on: November 10, 2011

Last amended as of : November 10, 2011

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