Form of the terms of the 2055 Notes, including the form of the 2055 Note

Record Dates:        March 1 and September 1

Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

IN WITNESS WHEREOF, the Company has caused this Security to be signed manually or by facsimile by its duly authorized officers.

Dated:

Phillips 66, a Delaware corporation, unconditionally guarantees to the holder of this Security, upon the terms and subject to the conditions set forth in the Indenture referenced on the reverse hereof, (a) the full and prompt payment of the principal of and any premium on this Security when and as the same shall become due, whether at the stated maturity thereof, by acceleration, redemption or otherwise, and (b) the full and prompt payment of interest on this Security when and as the same shall become due, subject to any applicable grace period.

Certificate of Authentication:

This is one of the Securities of the series

designated therein referred to in the within-

mentioned Indenture.

U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION,

as Trustee

By:

Authorized Signatory

Dated:

This Security is one of a duly authorized issue of 5.500% Senior Notes due 2055 (the “Securities”) of Phillips 66 Company, a Delaware corporation (the “Company”).

1.Interest. The Company promises to pay interest on the principal amount of this Security at 5.500% per annum from September 11, 2024 until maturity. The Company will pay interest semiannually on March 15 and September 15 of each year (each an “Interest Payment Date”), or if any such day is not a Business Day, on the next succeeding Business Day. Interest on the Securities shall accrue from the most recent Interest Payment Date on which interest has been paid or, if no interest has been paid, from September 11, 2024; provided that if there is no existing Default in the payment of interest, and if this Security is authenticated between a record date referred to on the face hereof (each, a “Record Date”) and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date; provided, further, that the first Interest Payment Date shall be March 15, 2025. The Company shall pay interest on overdue principal and premium (if any) from time to time at a rate equal to the interest rate then in effect; it shall pay interest on overdue installments of interest (without regard to any applicable grace periods) from time to time at the same rate to the extent lawful. Interest will be computed on the basis of a 360-day year of twelve 30-day months.

2.Method of Payment. The Company shall pay interest on the Securities (except defaulted interest) to the Persons who are registered Holders of Securities at the close of business on the Record Date next preceding the Interest Payment Date, even if such Securities are canceled after such Record Date and on or before such Interest Payment Date. The Holder must surrender this Security to a Paying Agent to collect principal payments. The Company shall pay the principal of, premium (if any) on and interest on the Securities in money of the United States of America that at the time of payment is legal tender for payment of public and private debts. Such amounts shall be payable at the offices of the Trustee (as defined below), provided that at the option of the Company, the Company may pay such amounts (1) by wire transfer with respect to Global Securities or (2) by check payable in such money mailed to a Holder’s registered address with respect to any Securities.

3.Paying Agent and Registrar. Initially, U.S. Bank Trust Company, National Association (the “Trustee”), the trustee under the Indenture, will act as Paying Agent and Registrar. The Company may change any Paying Agent, Registrar, co-registrar or additional

paying agent without notice to any Holder. The Company, the Guarantor or any Subsidiary of the Company may act in any such capacity.

4.Guarantee. Phillips 66, a Delaware corporation (the “Guarantor”), unconditionally guarantees to the Holders from time to time of the Securities, upon the terms and subject to the conditions set forth in the Indenture (as defined below), (a) the full and prompt payment of the principal of and any premium on the Securities when and as the same shall become due, whether at the Stated Maturity thereof, by acceleration, redemption or otherwise, and (b) the full and prompt payment of any interest on the Securities when and as the same shall become due, subject to any applicable grace period. The Guarantee constitutes a guarantee of payment and not of collection. In the event of a default in the payment of principal of or any premium on the Securities when and as the same shall become due, whether at the Stated Maturity thereof, by acceleration, call for redemption or otherwise, or in the event of a default in the payment of any interest on the Securities when and as the same shall become due, subject to any applicable grace period, each of the Trustee and the Holders of the Securities shall have the right to proceed first and directly against the Guarantor under the Indenture without first proceeding against the Company or exhausting any other remedies which the Trustee or such Holder may have and without resorting to any other security held by it.

5.Indenture. The Company issued the Securities under an Indenture, dated as of May 5, 2022 (the “Indenture”), among the Company, the Guarantor and the Trustee. The terms of the Securities include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (the “TIA”), as in effect on the date of execution of the Indenture. The Securities are subject to all such terms, and Holders are referred to the Indenture and the TIA for a statement of such terms and for the definitions of capitalized terms used but not defined herein. The Securities are unsecured general obligations of the Company limited to $600,000,000 in aggregate principal amount; provided, however, that the authorized aggregate principal amount of the Securities may be increased before or after the issuance of any Securities by a Board Resolution (or action pursuant to a Board Resolution) to such effect; provided further, however, that the authorized aggregate principal amount of the Securities may be increased only if the additional Securities issued will be fungible with the original Securities for United States federal income tax purposes. The Indenture provides for the issuance of other series of debt securities (including the Securities, the “Debt Securities”) thereunder.

6.Denominations, Transfer, Exchange. The Securities are in registered form without coupons in minimum denominations of $2,000 and any integral multiples of $1,000 above such amount. The transfer of Securities may be registered and Securities may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and to pay any taxes and fees required by law or permitted by the Indenture. Neither the Company, the Trustee nor the Registrar shall be required to register the transfer or exchange of (a) any Security selected for redemption in whole or in part, except the unredeemed portion of any Security being redeemed in part, or (b) any Security during the period beginning 15 Business Days before the

mailing of notice of redemption of Securities to be redeemed and ending at the close of business on the day of mailing.

7.Persons Deemed Owners. The registered Holder of a Security shall be treated as its owner for all purposes.

8.Optional Redemption. Prior to September 15, 2054 (the “Par Call Date”), the Securities are subject to redemption pursuant to Article III of the Indenture, at the election of the Company, at its option, in whole or in part, at any time and from time to time, at a Redemption Price (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of (a)(i) the sum of the present values of the remaining scheduled payments of principal and interest on the Securities to be redeemed discounted to the Redemption Date (assuming such Securities matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 25 basis points, less (ii) interest accrued to the Redemption Date, and (b) 100% of the principal amount of the Securities to be redeemed, plus, in either case, accrued and unpaid interest thereon to the Redemption Date.

On or after the Par Call Date, the Company may redeem the Securities, in whole or in part, at any time and from time to time, at a Redemption Price equal to 100% of the principal amount of the Securities being redeemed plus accrued and unpaid interest thereon to the Redemption Date.

“Business Day” means, any day that is not a Saturday, a Sunday or a day on which banking institutions in any of The City of New York, New York; Houston, Texas or a Place of Payment (as defined in the Indenture) are authorized or obligated by law, regulation or executive order to remain closed.

“Remaining Life” means, with respect to any Redemption Date, the period from such Redemption Date to the Par Call Date.

“Treasury Rate” means, with respect to any Redemption Date, the yield determined by the Company in accordance with the following two paragraphs:

The Treasury Rate shall be determined by the Company after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third Business Day preceding the applicable Redemption Date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as “Selected Interest Rates (Daily)—H.15” (or any successor designation or publication) (“H.15”) under the caption “U.S. government securities–Treasury constant maturities–Nominal” (or any successor caption or heading) (“H.15 TCM”). In determining the Treasury Rate, the Company shall select, as applicable: (1) the yield for the Treasury constant maturity on H.15 exactly equal to the Remaining Life; or (2) if there is no such Treasury constant maturity on H.15 exactly equal to the

Remaining Life, the two yields—one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life—and shall interpolate to the Par Call Date on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the applicable Redemption Date.

If on the third Business Day preceding the Redemption Date H.15 TCM is no longer published, the Company shall calculate the Treasury Rate based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m., New York City time, on the second Business Day preceding such Redemption Date of the United States Treasury security maturing on, or with a maturity that is closest to, the Par Call Date, as applicable. If there is no United States Treasury security maturing on the Par Call Date but there are two or more United States Treasury securities with a maturity date equally distant from the Par Call Date, one with a maturity date preceding the Par Call Date and one with a maturity date following the Par Call Date, the Company shall select the United States Treasury security with a maturity date preceding the Par Call Date. If there are two or more United States Treasury securities maturing on the Par Call Date or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m., New York City time. In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked prices (expressed as a percentage of principal amount) at 11:00 a.m., New York City time, of such United States Treasury security, and rounded to three decimal places.

Notice of any optional redemption will be mailed or electronically delivered at least 10 days but not more than 60 days before the Redemption Date to each Holder of Securities to be redeemed.

9.Amendments and Waivers. Subject to certain exceptions and limitations, the Indenture or the Securities may be amended or supplemented with the consent of the Holders of at least a majority in principal amount of the then outstanding Securities of all series affected by such amendment or supplement (acting as one class), and any existing or past Default or Event of Default under, or compliance with any provision of, the Indenture may be waived (other than any continuing Default or Event of Default in the payment of the principal of, premium (if any) on or interest on the Securities) by the Holders of at least a majority in principal amount of the then outstanding Securities of any series or of all series (acting as one class) in accordance with the terms of the Indenture. Without the consent of any Holder, the Company, the Guarantor and the Trustee may amend or supplement the Indenture or the Securities or waive any provision of

either: (i) to cure any ambiguity, omission, defect or inconsistency; (ii) if required, to provide for the assumption of the obligations of the Company or the Guarantor under the Indenture in the case of the merger, consolidation or sale, lease, conveyance, transfer or other disposition of all or substantially all of the assets of the Company or the Guarantor; (iii) to provide for uncertificated Securities in addition to or in place of certificated Securities or to provide for the issuance of bearer Securities (with or without coupons); (iv) to provide any security for, or to add any guarantees of or additional obligors on, the Securities or the related Guarantees; (v) to comply with any requirement in order to effect or maintain the qualification of the Indenture under the TIA; (vi) to add to the covenants of the Company or the Guarantor for the benefit of the Holders of the Securities, or to surrender any right or power conferred by the Indenture upon the Company or the Guarantor; (vii) to add any additional Events of Default with respect to all or any series of the Debt Securities; (viii) to change or eliminate any of the provisions of the Indenture, provided that no outstanding Security is adversely affected in any material respect; (ix) to establish the form or terms of Securities of any series; (x) to supplement any of the provisions of the Indenture to such extent as shall be necessary to permit or facilitate the defeasance and discharge of the Securities pursuant to the Indenture, provided that no interest of any Holders of Securities is adversely affected in any material respect; or (xi) to evidence and provide for the acceptance of appointment under the Indenture by a successor Trustee with respect to the Securities and to add to or change any of the provisions of the Indenture as shall be necessary to provide for or facilitate the administration of the trusts thereunder by more than one Trustee, pursuant to the requirements of the Indenture.

The right of any Holder to participate in any consent required or sought pursuant to any provision of the Indenture (and the obligation of the Company or the Guarantor to obtain any such consent otherwise required from such Holder) may be subject to the requirement that such Holder shall have been the Holder of record of any Securities with respect to which such consent is required or sought as of a date identified by the Company or the Guarantor in a notice furnished to Holders in accordance with the terms of the Indenture.

Without the consent of each Holder affected, the Company may not (i) reduce the amount of Debt Securities whose Holders must consent to an amendment, supplement or waiver; (ii) reduce the rate of or change the time for payment of interest, including default interest, on any Security; (iii) reduce the principal of or premium on or any mandatory sinking fund payment with respect to, or change the Stated Maturity of, any Security or reduce the amount of the principal of an Original Issue Discount Security that would be due and payable upon a declaration of acceleration of the Maturity thereof pursuant to the Indenture; (iv) reduce the premium, if any, payable upon the redemption of any Security or change the time at which any Security may or shall be redeemed; (v) change any obligation of the Issuer or a Guarantor to pay Additional Amounts with respect to any Security; (vi) change the coin or currency in which any Security or any premium, interest or Additional Amounts with respect thereto is payable; (vii) impair the right to institute suit for the enforcement of any payment of principal of or premium (if any) or interest on any Security, except as provided in the Indenture; (viii) make any change in the percentage of principal amount of Debt Securities necessary to waive compliance with certain provisions of the Indenture or make any change in the provision for modification; or

(ix) waive a continuing Default or Event of Default, each as defined in the Indenture, in the payment of principal of or premium (if any) or interest on the Securities.

A supplemental indenture that changes or eliminates any covenant or other provision of the Indenture which has expressly been included solely for the benefit of one or more particular series of Debt Securities under the Indenture, or which modifies the rights of the Holders of Debt Securities of such series with respect to such covenant or other provision, shall be deemed not to affect the rights under the Indenture of the Holders of Debt Securities of any other series.

10.Defaults and Remedies. Events of Default are defined in the Indenture and generally include: (i) default for 30 days in payment of any interest on the Securities; (ii) default in any payment of principal of or premium, if any, on the Securities when due and payable; (iii) default by the Company or the Guarantor in compliance with any of its other covenants or agreements in, or provisions of, the Securities or in the Indenture which shall not have been remedied within 90 days after written notice by the Trustee or by the holders of at least 25% in principal amount of the Securities then outstanding (or, in the event that other Debt Securities issued under the Indenture are also affected by the default, then 25% in principal amount of all outstanding Debt Securities so affected); or (iv) certain events involving bankruptcy, insolvency or reorganization of the Company or the Guarantor. If an Event of Default occurs and is continuing, the Trustee by notice to the Company and the Guarantor, or the Holders of at least 25% in principal amount of the then outstanding Securities of the series affected by such Event of Default (or, in the case of an Event of Default described in clause (iii) above, if outstanding Debt Securities of other series are affected by such default, then at least 25% in principal amount of the then outstanding Debt Securities so affected) by notice to the Company, the Guarantor and the Trustee, may declare the principal of and interest on all the Securities to be immediately due and payable, except that in the case of an Event of Default arising from certain events of bankruptcy, insolvency or reorganization of the Company or the Guarantor, all outstanding Debt Securities under the Indenture become due and payable immediately without further action or notice. The amount due and payable upon the acceleration of any Security is equal to 100% of the principal amount thereof plus accrued interest to the date of payment. Holders may not enforce the Indenture or the Securities except as provided in the Indenture. The Trustee may require indemnity satisfactory to it before it enforces the Indenture or the Securities. Subject to certain limitations, Holders of a majority in principal amount of the then outstanding Securities may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from Holders notice of any continuing default (except a default in payment of principal, premium or interest) if it determines that withholding notice is in their interests. The Company and the Guarantor must furnish annual compliance certificates to the Trustee.

11.Discharge Prior to Maturity. The Indenture with respect to the Securities shall be discharged and canceled upon the payment of all of the Securities and shall be discharged except for certain obligations upon the irrevocable deposit with the Trustee of any combination of funds and U.S. Government Obligations sufficient for such payment.

12.Trustee Dealings with Company and Guarantor. The Trustee, in its individual or any other capacity, may become the owner or pledgee of Securities and may make loans to, accept deposits from, and perform services for the Company, the Guarantor or any of their respective Affiliates, and may otherwise deal with the Company, the Guarantor or any such Affiliates, as if it were not Trustee.

13.No Recourse Against Others. A director, officer, employee, stockholder, partner or other owner of the Company, the Guarantor or the Trustee, as such, shall not have any liability for any obligations of the Company under the Securities, for any obligations of the Guarantor under the Guarantee or for any obligations of the Company, the Guarantor or the Trustee under the Indenture or for any claim based on, in respect of or by reason of such obligations or their creation. Each Holder by accepting a Security waives and releases all such liability. The waiver and release shall be part of the consideration for the issue of Securities.

14.Authentication. This Security shall not be valid until authenticated by the manual signature of the Trustee or an authenticating agent.

15.CUSIP Numbers. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP numbers to be printed on the Securities as a convenience to the Holders of the Securities. No representation is made as to the accuracy of such numbers as printed on the Securities and reliance may be placed only on the other identification numbers printed thereon.

16.Abbreviations. Customary abbreviations may be used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act).

The Company will furnish to any Holder upon written request and without charge a copy of the Indenture. Request may be made to:

Phillips 66 Company

2331 CityWest Boulevard

Houston, Texas 77042

Telephone: (832) 765-3010

Attention: Treasurer

The following exchanges of a part of this Global Security for other Securities have been made:

To assign this Security, fill in the form below: (I) or (we) assign and transfer this Security to

and irrevocably appoint     

as agent to transfer this Security on the books of the Company. The agent may substitute another to act for him.

Date:                      Your Signature:    

                                (Sign exactly as your name appears on

                                the face of this Security)

Signature Guarantee:    

    (Participant in a Recognized Signature

    Guaranty Medallion Program)