Exhibit 4.16

This SUPPLEMENTAL INDENTURE, dated as of June 20, 2025 (this “Supplemental Indenture”), is among PARKLAND CORPORATION, a corporation amalgamated under the laws of the Province of Alberta (the “Issuer”), each of the GUARANTORS (as defined in the Indenture referred to below), COMPUTERSHARE TRUST COMPANY, N.A., as U.S. trustee under the Indenture referred to below (the “U.S. Trustee”), and COMPUTERSHARE TRUST COMPANY OF CANADA, as Canadian trustee under the Indenture referred to below (the “Canadian Trustee” and, together with the U.S. Trustee, the “Trustees”).

RECITALS

WHEREAS, the Issuer has heretofore executed and delivered to the Trustees an indenture (as supplemented as of the date hereof, the “Indenture”), dated as of November 23, 2021 providing for the issuance of 4.625% Senior Notes due 2030 (the “Securities”);

WHEREAS, Section 9.1 of the Indenture provides that, subject to certain exceptions, the Issuer, the Guarantors and the Trustees may amend or supplement the Indenture with the consent of the Holders of at least a majority in principal amount of the Securities then outstanding;

WHEREAS, the Issuer has distributed a Consent Solicitation Statement, dated as of May 27, 2025 (the “Statement”), to the Holders of the Securities in connection with the solicitation of such Holder’s consent to certain proposed amendments to the Indenture;

WHEREAS, pursuant to the Statement, the Holders of at least a majority in principal amount of the Securities outstanding as of the date hereof have consented to the amendments effected by this Supplemental Indenture and evidence of such consents has been provided by the Issuer to the Trustees; and

WHEREAS, in accordance with Sections 9.1, 9.6, 11.4 and 11.5 of the Indenture, the Issuer has delivered to the Trustees (a)(i) an Authentication Order accompanied by (ii) a resolution of its Board of Directors authorizing the execution of this Supplemental Indenture, (b) the requisite Officers’ Certificate stating that this Supplemental Indenture complies with Section 9.6 of the Indenture and that all conditions precedent provided for in the Indenture have been complied with and (c) the requisite Opinion of Counsel stating that all conditions precedent provided for in the Indenture have been complied with.

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto mutually agree as follows:

ARTICLE I

DEFINITIONS

Section 1.1 Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

Section 1.2 When used herein, “Consent Time” shall mean the first time at which the Requisite Consents (as defined in the Statement) have been received and this Supplemental Indenture has been executed by the Issuer, the Guarantors and the Trustees; provided, however, that this Supplemental Indenture shall cease to be operative if (x) the Transaction (as defined in the Statement) is not consummated or (y) the Issuer does not pay (or cause to be paid) the applicable Consent Fee (as defined in the Statement) to DTC for the benefit of the applicable Holders (clauses (x) and (y) the “Terminating Conditions”).

ARTICLE II

AMENDMENTS TO THE INDENTURE

Section 2.1 Effective at the Consent Time, without any further action by any party hereto, subject to the Terminating Conditions, the Indenture is hereby amended as follows:

(a) Section 1.1 of the Indenture is hereby amended by inserting the following bold underscored text to the definition of “Change of Control”:

“Change of Control” means the occurrence of any of the following:

(1) the direct or indirect sale, transfer, conveyance or other disposition (other than by way of merger, amalgamation or consolidation), in one or a series of related transactions, of all or substantially all of the properties or assets of the Issuer and its Restricted Subsidiaries, taken as a whole, to any Person, other than a Qualified Owner;

(2) the consummation of any transaction (other than a transaction described in paragraph (4) below including the exceptions thereto) the result of which is that any Person or group of Persons, other than a Qualified Owner, is or becomes the beneficial owner of (with beneficial ownership being defined and calculated pursuant to Section 1.8 of National Instrument 62-104 Take-Over Bids and Issuer Bids, as amended, restated, supplemented or replaced from time to time), or controls, directly or indirectly, Voting Shares representing 50% or more of the voting power of the total outstanding Voting Shares of the Issuer;

(3) the Issuer amalgamates or consolidates with, or merges with or into, any Person, or any Person amalgamates or consolidates with, or merges with or into the Issuer, in any such event pursuant to a transaction in which any of the outstanding Voting Shares of the Issuer or such other Person is converted into or exchanged for cash, securities or other property, other than any such transaction where (a) the Voting Shares of the Issuer outstanding immediately prior to such transaction constitutes, or is converted into or exchanged for Voting Shares of the surviving, continuing or transferee Person or any parent thereof constituting, a majority of the outstanding Voting Shares of such surviving, continuing or transferee Person or any parent thereof (immediately after giving effect to such issuance) and (b) immediately after such transaction, no Person becomes the beneficial owner of (with beneficial ownership being defined and calculated pursuant to Section 1.8 of National Instrument 62-104 (Take-Over Bids and Issuer Bids), as amended, restated, supplemented or replaced from time to time), or controls, directly or indirectly, Voting Shares representing 50% or more of the voting power of the total outstanding Voting Shares of the surviving, continuing or transferee Person or any parent thereof; and . . .

(b) Section 1.1 of the Indenture is hereby amended by inserting the following text at the end of the definition of “Change of Control”:

Notwithstanding the foregoing, the Arrangement, as defined in that certain Arrangement Agreement, dated effective May 4, 2025, by and among the Issuer, Sunoco LP, a Delaware limited partnership, 2709716 Alberta Ltd., an Alberta corporation, and NuStar GP Holdings, LLC, a Delaware limited liability company, shall not constitute a Change of Control.

(c) Section 1.1 of the Indenture is hereby amended by adding the following defined term in the appropriate alphabetical order:

“Qualified Owner” means any of (i) LE GP, LLC and Energy Transfer LP, (ii) any Person who is the beneficial owner of (with beneficial ownership being defined and calculated pursuant to Rule 13d-3 under the U.S. Exchange Act, as amended, restated, supplemented or replaced from time to time) more than 50% of the Voting Shares of any entity specified in clause (i) above or who is the beneficial owner of (with beneficial ownership being defined and calculated pursuant to Rule 13d-3 under the U.S. Exchange Act, as amended, restated, supplemented or replaced from time to time) sufficient Equity Interests in such entity to elect a majority of its directors, managers, trustees or other persons serving in a similar capacity for such entity and (iii) any Subsidiary or Affiliate of any entity specified in either clause (i) or clause (ii) above.

ARTICLE III

MISCELLANEOUS

Section 3.1 This Supplemental Indenture is supplemental to the Indenture and does and shall be deemed to form a part of, and shall be construed in connection with and as part of, the Indenture for any and all purposes; provided that, upon the occurrence of either of the Terminating Conditions, this Supplemental Indenture shall cease to be operative.

Section 3.2 No director, officer, employee or incorporator of the Issuer or any Guarantor, or shareholder of the Issuer, or annuitant under a plan of which a shareholder of the Issuer is a trustee or carrier shall have any liability for any indebtedness, obligations or liabilities of the Issuer under the Securities or the Indenture or any Guarantor under its Subsidiary Guarantee (as defined in the Indenture) or for any claim based on, in respect of or by reason of, such obligations or their creation. By accepting a Security, each Holder waives and releases all such liability. The waiver and release are part of the consideration for the issuance of the Securities and the Guarantees. The waiver may not be effective to waive liabilities under applicable securities laws.

Section 3.3 THE LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS SUPPLEMENTAL INDENTURE.

Section 3.4 The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

Section 3.5 The Article headings herein are for convenience only and shall not affect the construction hereof.

Section 3.6 The Trustees shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Issuer and the Guarantors.

Section 3.7 The provisions of Sections 11.9 and 11.10 of the Indenture apply as if set forth herein mutatis mutandis.

[NEXT PAGE IS SIGNATURE PAGE]

IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed as of the date first above written.

PARKLAND CORPORATION
By:	/s/ Brad Monaco
Name:	Brad Monaco
Title:	Chief Financial Officer
By:	/s/ Valerie Roberts
Name:	Valerie Roberts
Title:	Vice President, Capital Markets

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030

PARKLAND REFINING LTD.
By:	/s/ Brad Monaco
Name:	Brad Monaco
Title:	Senior Vice President and Chief Financial Officer
By:	/s/ Valerie Roberts
Name:	Valerie Roberts
Title:	Vice President, Capital Markets
PARKLAND REFINING (B.C.) LTD.
By:	/s/ Brad Monaco
Name:	Brad Monaco
Title:	Senior Vice President and Chief Financial Officer
By:	/s/ Valerie Roberts
Name:	Valerie Roberts
Title:	Vice President, Capital Markets
PARKLAND ACQUISITION LTD.
By:	/s/ Brad Monaco
Name:	Brad Monaco
Title:	Senior Vice President and Chief Financial Officer
By:	/s/ Valerie Roberts
Name:	Valerie Roberts
Title:	Vice President, Capital Markets

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030

ELBOW RIVER MARKETING LTD.
By:	/s/ Brad Monaco
Name:	Brad Monaco
Title:	Vice Chair
By:	/s/ Valerie Roberts
Name:	Valerie Roberts
Title:	Vice President, Capital Markets
M &M MEAT SHOPS LTD.
By:	/s/ Brad Monaco
Name:	Brad Monaco
Title:	Chief Financial Officer
By:	/s/ Valerie Roberts
Name:	Valerie Roberts
Title:	Vice President, Capital Markets
ESTRELLA HOLDINGS LIMITED
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030

PARKLAND (U.S.) HOLDING CORP.
By:	/s/ Marcel Teunissen
Name:	Marcel Teunissen
Title:	President
By:	/s/ Dimitre Marinov
Name:	Dimitre Marinov
Title:	Vice President, Finance and Treasurer
PARKLAND (U.S.) SUPPLY CORP.
By:	/s/ Marcel Teunissen
Name:	Marcel Teunissen
Title:	President
By:	/s/ Dimitre Marinov
Name:	Dimitre Marinov
Title:	Vice President, Finance and Treasurer
PARKLAND USA CORPORATION
By:	/s/ Marcel Teunissen
Name:	Marcel Teunissen
Title:	President
By:	/s/ Dimitre Marinov
Name:	Dimitre Marinov
Title:	Vice President, Finance and Treasurer

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030

TROPIC ACQUISITION CORP.
By:	/s/ Marcel Teunissen
Name:	Marcel Teunissen
Title:	President
By:	/s/ Dimitre Marinov
Name:	Dimitre Marinov
Title:	Vice President, Finance and Treasurer
TROPIC OIL COMPANY LLC
By:	/s/ Marcel Teunissen
Name:	Marcel Teunissen
Title:	President
By:	/s/ Dimitre Marinov
Name:	Dimitre Marinov
Title:	Vice President, Finance and Treasurer
TROPIC TRANSPORTATION, LLC
By:	/s/ Marcel Teunissen
Name:	Marcel Teunissen
Title:	President
By:	/s/ Dimitre Marinov
Name:	Dimitre Marinov
Title:	Vice President, Finance and Treasurer

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030

SOL INVESTMENTS SEZC
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President
SOL AVIATION SERVICES LIMITED
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President
SOL PETROLEUM CAYMAN LIMITED
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030

SOL PETROLEUM BERMUDA LIMITED
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President
SOL ST. LUCIA LTD.
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President
SOL PUERTO RICO LIMITED
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030

ANTILLES SHIPPING COMPANY SEZC
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Richard Nott
Name:	Richard Nott
Title:	Vice President
ANTILLES TRADING COMPANY SEZC
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Richard Nott
Name:	Richard Nott
Title:	Vice President
SOL ANTILLES AND GUIANAS LIMITED
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030

SOL EC LTD.
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President
SOL (DR) LIMITED
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President
SOL AUTOMARKET LIMITED
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030

SOL REPUBLICA DOMINICANA, S.R.L.
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	Manager
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Manager
SOL GUYANA INC.
By:	/s/ Donna Sanker
Name:	Donna Sanker
Title:	President
By:	/s/ Jasmine Cheung
Name:	Jasmine Cheung
Title:	Vice President
PARKLAND BRANDS LIMITED PARTNERSHIP, by its general partner, 2624858 ALBERTA LTD.
By:	/s/ Valerie Roberts
Name:	Valerie Roberts
Title:	Vice President, Capital Markets
2624858 ALBERTA LTD.
By:	/s/ Valerie Roberts
Name:	Valerie Roberts
Title:	Vice President, Capital Markets

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030

COMPUTERSHARE TRUST COMPANY, N.A.,
as U.S. Trustee
By:	/s/ Corey J. Dahlstrand
Name:	Corey J. Dahlstrand
Title:	Vice President
COMPUTERSHARE TRUST COMPANY OF CANADA, as Canadian Trustee
By:	/s/ Corentin Leverrier
Name:	Corentin Leverrier
Title:	Manager, Corporate Trust
By:	/s/ Sue-Anne Wong
Name:	Sue-Anne Wong
Title:	Corporate Trust Officer

SIGNATURE PAGE TO SUPPLEMENTAL INDENTURE

4.625% SENIOR NOTES DUE 2030