Document:

Exhibit 10.45

Exhibit 10.45

ASSIGNMENT AND ASSUMPTION AGREEMENT

(First Amended and Restated Pipelines, Tankage and Loading Rack

Throughput Agreement (Tulsa East))

This Assignment and Assumption Agreement (the “Agreement”) is effective as of 12:01
a.m., Eastern time, on January 1, 2011 (the “Effective Time”) by and between Holly Refining
& Marketing —Tulsa, LLC, a Delaware limited liability company (“Assignor”), and Holly
Refining & Marketing Company LLC, a Delaware limited liability company (“Assignee”).
Assignor and Assignee are referred to herein collectively as the “Parties”.

RECITALS

Assignor desires to assign to Assignee and Assignee desires to assume that certain First
Amended and Restated Pipelines, Tankage and Loading Rack Throughput Agreement (Tulsa East), dated
as of March 31, 2010, by and between Assignor, HEP Tulsa LLC, a Delaware limited liability company
(“HEP Tulsa”) and Holly Energy Storage-Tulsa LLC, a Delaware limited liability company
(“HES-Tulsa”), Holly Corporation, a Delaware corporation (“Holly”), Holly Energy
Partners, L.P., a Delaware limited partnership, and Holly Energy Partners-Operating, L.P., a
Delaware limited partnership, as amended by that certain Amendment to First Amended and Restated
Pipelines, Tankage and Loading Rack Throughput Agreement (Tulsa East), dated as of June 11, 2010,
by and between HEP Tulsa, HES-Tulsa and Assignor (collectively, the “Throughput
Agreement”). Capitalized terms used herein but not otherwise defined herein shall have the
meanings given to them in the Throughput Agreement.

NOW THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, Assignor and Assignee hereby agree as follows:

ASSIGNMENT

1. Assignment. Assignor hereby assigns all of its right, title and interest in and to
the Throughput Agreement to Assignee.

2. Assumption. Assignee hereby assumes and agrees to be solely responsible for the
payment, performance and discharge when due of all liabilities and obligations of Assignor arising
pursuant to the Throughput Agreement.

3. Guaranty by Holly. Holly hereby acknowledges and agrees that for purposes of
Section 14 of the Throughput Agreement, Holly’s obligations to guarantee the “Holly Tulsa Payment
Obligations” of Assignor will continue after the date hereof and following the date hereof, such
term shall apply to and include the obligations assigned hereunder to and assumed hereunder by
Assignee.

Assignment
and Assumption Agreement — Page 1

 

 

 

4. Further Assurances. Each Party covenants and agrees that, subsequent to the
execution and delivery of this Agreement and without any additional consideration, each Party will
execute and deliver any further legal instruments and perform any acts that are or may become
necessary to effectuate the purposes of this Agreement.

5. Binding Effect. This Agreement is binding upon and shall inure to the benefit of
the Parties and their respective successors and assigns.

6. Governing Law. This Agreement shall be governed by, and construed in accordance
with, the laws of the State of Delaware, without reference to the principles of conflicts of laws
or any other principle that could result in the application of the laws of any other jurisdiction.

7. Counterparts. This Agreement may be executed in one or more counterparts, each of
which shall be deemed an original but all of which together will constitute one and the same
instrument.

8. Captions. The captions section numbers in this Agreement are for convenience only
and shall not be considered a part of or affect the construction or interpretation of any provision
of this Agreement.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK

SIGNATURE PAGE FOLLOWS]

Assignment and Assumption Agreement — Page 2

 

 

 

IN WITNESS WHEREOF, the Parties have caused this Agreement to be executed by their duly
authorized representatives as of the date set forth above.

	 	 	 	 	 
	 	ASSIGNOR:

HOLLY REFINING & MARKETING-TULSA LLC

 	 
	 	By:  	/s/ Gary B. Fuller
 	 
	 	 	Name:  	Gary B. Fuller 	 
	 	 	Title:  	Sr. VP, Refinery Operations 	 
	 
	 	ASSIGNEE:

HOLLY REFINING & MARKETING COMPANY LLC

 	 
	 	By:  	/s/ Bruce R. Shaw
 	 
	 	 	Name:  	Bruce R. Shaw 	 
	 	 	Title:  	Sr. VP & CFO 	 

ACKNOWLEDGED AND AGREED

FOR PURPOSES OF Section 3:

HOLLY CORPORATION

	 	 	 	 	 

	By:

	 	/s/ David L. Lamp
 

Name: David L. Lamp 

Title:   President
	 	 

[Signature Page to Assignment and Assumption Agreement]exv4w24

Exhibit 4.24

     SUPPLEMENTAL INDENTURE, dated as of January 12, 2011, among SIRIUS XM RADIO INC., a
Delaware corporation (the “Company”), XM EQUIPMENT LEASING LLC, a Delaware limited
liability company and indirect wholly-owned subsidiary of the Company (“Equipment
Leasing”), XM 1500 ECKINGTON LLC, a Delaware limited liability company and indirect
wholly-owned subsidiary of the Company (“Eckington”), XM INVESTMENT LLC, a Delaware limited
liability company and indirect wholly-owned subsidiary of the Company (“Investment”), XM
RADIO INC., a Delaware corporation and indirect wholly-owned subsidiary of the Company (“XM
Radio”), XM EMALL INC., a Delaware corporation and indirect wholly-owned subsidiary of the
Company (“EMall”), XM CAPITAL RESOURCES INC., a Delaware corporation and indirect
wholly-owned subsidiary of the Company (“Capital Resources”), XM INNOVATIONS INC., a
Delaware corporation and indirect wholly-owned subsidiary of the Company (“Innovations”),
EFFANEL MUSIC, INC., a New York corporation and indirect wholly-owned subsidiary of the Company
(with Equipment Leasing, Eckington, Investment, XM Radio, EMall, Capital Resources and Innovations,
each an “Additional Guarantor”), the other Guarantors and U.S. BANK NATIONAL ASSOCIATION,
as trustee (the “Trustee”). Capitalized terms used herein without definition will have the
meanings assigned to them in the Indenture (defined below).

     WHEREAS, the Company has heretofore executed and delivered to the Trustee an indenture (as
amended or supplemented from time to time, the “Indenture”), dated as of March 17, 2010, in
connection with the issuance of 8.75% Senior Notes due 2015 (the “Notes”);

     WHEREAS, Section 10.06 of the Indenture provides that certain Persons shall execute and
deliver to the Trustee a supplemental indenture pursuant to which such Person shall become a
Guarantor and unconditionally guarantee the Company’s Obligations under the Notes and the Indenture
on the terms and conditions set forth herein (the “Note Guarantee”);

     WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is authorized to execute and
deliver this Supplemental Indenture.

     NOW, THEREFORE, in consideration of the foregoing and for other good and valuable
consideration, the receipt of which is hereby acknowledged, each Guarantor, each Additional
Guarantor and the Trustee mutually covenant and agree for the equal and ratable benefit of the
Holders as follows:

     1. AGREEMENT TO GUARANTEE. Each Additional Guarantor hereby agrees to provide an
unconditional Guarantee on the terms and subject to the conditions set forth in the Note Guarantee
and in the Indenture including but not limited to Article 10 thereof.

     2. NO RECOURSE AGAINST OTHERS. No past, present or future director, officer, employee,
incorporator, stockholder or agent of each Guarantor or Additional Guarantor, as such, will have
any liability for any obligations of the Company or any Guarantor or any Additional Guarantor under
the Notes, any Note Guarantees, the Indenture or this Supplemental Indenture or for any claim based
on, in respect of, or by reason of, such obligations or their creation. Each Holder of the Notes
by accepting a Note waives and releases all such liability. The waiver and release are part of the
consideration for issuance of the Notes.

     3. GOVERNING LAW. This Supplemental Indenture and the Notes shall be governed by, and
construed in accordance with, the laws of the State of New York.

1

 

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

     5. EFFECT OF HEADINGS. The Section headings herein are for convenience only and will not
affect the construction hereof.

     6. THE TRUSTEE. The Trustee will 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 each Guarantor, each Additional
Guarantor and the Company.

[remainder of page intentionally left blank]

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

	 	 	 	 	 
	 	XM EQUIPMENT LEASING LLC

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Treasurer 	 
	 
	 	XM 1500 ECKINGTON LLC

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Treasurer 	 
	 
	 	XM INVESTMENT LLC

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Treasurer 	 
	 
	 	XM RADIO INC.

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Treasurer 	 
	 
	 	XM EMALL INC.

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Treasurer 	 

 

 

	 	 	 	 	 
	 	XM CAPITAL RESOURCES INC.

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Treasurer 	 
	 
	 	XM INNOVATIONS INC.

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Treasurer 	 
	 
	 	EFFANEL MUSIC, INC.

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Treasurer 	 
	 
	 	SIRIUS XM RADIO INC.

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Executive Vice President and Chief 

Financial
Officer 	 
	 
	 	SIRIUS ASSET MANAGEMENT COMPANY LLC

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Treasurer 	 

 

 

	 	 	 	 	 
	 	SATELLITE CD RADIO, INC.

 	 
	 	By  	/s/ David J. Frear
 	 
	 	 	David J. Frear 	 
	 	 	Treasurer 	 

 

 

	 	 	 	 	 
	 	U.S. BANK NATIONAL ASSOCIATION, as Trustee

 	 
	 	By  	/s/ Thomas E. Tabor
 	 
	 	 	Thomas E. Tabor 	 
	 	 	Vice President

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