Document:

EX-10.34

 Exhibit 10.34 
 Text of Option Amendments made in July 2012 
 RESOLVED, that by virtue of the authority
vested in the Committee pursuant to the TransDigm Group Incorporated 2006 Stock Incentive Plan, as amended (the“2006 Plan”), the Committee hereby amends Section 3.3 of all of the outstanding option agreements for John Leary, James
Skulina and Peter Palmer by deleting the text thereof and replacing it as follows: 
 “3.3 Expiration of
Option. The Option may not be exercised to any extent by anyone after the first to occur of the following events: 
 (a) The expiration of ten years from the Grant Date; 
 (b) If this
Option is designated as an Incentive Stock Option and the Participant owned (within the meaning of Section 424(d) of the Code), at the time the Option was granted, more than 10% of the total combined voting power of all classes of stock of the
Company of any “subsidiary corporation” of the Company or any “parent corporation” of the Company (each within the meaning of Section 424 of the Code), the expiration of five years from the Grant Date; 

(c) The opening of business on the day of the Participant’s Termination of Services by reason of the
Participant’s Termination of Employment by reason of a termination by the Company for Cause (as defined in the Participant’s employment agreement, if applicable), unless the Committee, in its discretion, determines that a longer period is
appropriate; 
 (d) The expiration of six months from the date of the Participant’s Termination of
Services, unless such termination occurs by reason of (i) the Participant’s death, (ii) the Participant’s termination for Cause (as defined in the Participant’s employment agreement, if applicable), (iii) the
Participant’s retirement (pursuant to Section 3.3(e)), (iv) the Participant’s termination for Cause (as defined in the Participant’s employment agreement, if applicable), or (v) if the Participant has an employment
agreement that defines a termination for “Cause” and/or “Good Reason,” a termination by the Company without Cause (as defined in the Participant’s employment agreement) or a termination by the Participant for Good Reason (as
defined in Participant’s employment agreement), provided, however, that any portion of this Option that is an Incentive Stock Option shall cease to be an Incentive Stock Option on the expiration of three months from the
Participant’s Termination of Services (and shall thereafter by a Non-Qualified Stock Option), provided, further, that to the extent that the Participant is prohibited from selling shares of Stock pursuant to the Company’s insider
trading policy at all times during such six-month period, with the exception of an open trading window of less than seven days, the Option shall expire on the seventh day following the opening of the first open trading window trading window
thereafter; or 
 (e) The expiration of one year from the date of the Participant’s Termination of Services
by reason of the retirement, after a minimum of ten years of service, of a Participant who is at least 55 years old, provided, however, that to the extent that the Participant is prohibited from selling shares of Stock pursuant to the
Company’s insider trading policy at all times during such one- year period, with the exception of an open trading window of less than seven days, the Option shall expire on the seventh day following the opening of the first open trading window
thereafter; or 
 (f) The expiration date set forth in clause (a), (i) if the Participant has an employment
agreement that defines a termination for “Cause” and/or “Good Reason,” upon a Participant’s Termination of Services by the Company without Cause (as defined in Participant’s employment agreement) or a Termination of
Services by the Participant for Good Reason (as defined in Participant’s employment agreement) or (ii) upon the Participant’s death or Disability.”EX-4.1

 EXHIBIT 4.1 

SUPPLEMENTAL INDENTURE, dated as of November 15, 2013, among SIRIUS XM RADIO INC., a Delaware corporation (the “Company”
and successor to XM Satellite Radio Inc.), SIRIUS XM HOLDINGS INC., a Delaware corporation and a wholly-owned subsidiary of the Company (“Holdings”), the guarantors listed on the signature pages hereto (the
“Guarantors”) and THE BANK OF NEW YORK MELLON, as trustee (the “Trustee”). Capitalized terms that are not defined herein shall have the meanings assigned to them in the Indenture (defined below). 

WHEREAS, the Company and the Guarantors have heretofore executed and delivered to the Trustee an indenture (as amended or supplemented
from time to time, the “Indenture”), dated as of August 1, 2008, in connection with the issuance of 7% Exchangeable Senior Subordinated Notes due 2014 (the “Notes”);  

WHEREAS, the Company desires to create a new holding company structure and intends to execute and file a Certificate of Merger (the
“Certificate of Merger”) with the Secretary of State of the State of Delaware effective on November 15, 2013, to merge Sirius XM Merger Sub Inc., a Delaware corporation and a wholly-owned subsidiary of Holdings (the “Merger
Sub”), with and into the Company, with the Company being the surviving corporation (the “Merger”), and thereby converting each outstanding share of Common Stock of the Company into one share of common stock of Holdings, par
value $0.001 per share (the “Holdings Common Stock”); 
 WHEREAS, Section 4.01 of the Indenture
provides, among other things, that the Company shall not be prevented from merging with or into any other Person, with the Company being the surviving corporation, provided that, among other things, immediately after giving pro forma
effect to such merger, no Default or Event of Default shall have occurred and be continuing; 
 WHEREAS, Section 8.01 of the
Indenture provides, among other things, that the Company and the Trustee may from time to time and at any time amend the Indenture without the consent of any Holder to make any change that does not adversely affect the rights of any Holder; 

WHEREAS, pursuant to Section 8.01 of the Indenture, the Company, the Guarantors and the Trustee are authorized to execute and deliver
this Supplemental Indenture to amend the Indenture, without the consent of any Holder, to evidence the assumption by Holdings, jointly and severally with the Company, of the covenants, agreements, rights and obligations of the Company under the
Indenture; 
 WHEREAS, pursuant to Section 8.05 of the Indenture, the Trustee is authorized to execute and deliver this Supplemental
Indenture; and 
 WHEREAS, all acts and requirements necessary to make this Supplemental Indenture the legal, valid and binding obligation
of each of the Guarantors, Holdings and the Company have been satisfied. 

 NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE WITNESSETH: 

For and in consideration of the premises and intending to be legally bound hereby, it is mutually covenanted and agreed, for the equal and
proportionate benefit of all Holders as follows: 
 ARTICLE I 

REPRESENTATIONS OF THE COMPANY 

The Company represents and warrants to the Trustee as of the date hereof as follows: 

SECTION 1.01. The execution, delivery and performance by it of this Supplemental Indenture have been authorized and approved by all necessary
corporate action on the part of it. 
 SECTION 1.02. Upon the filing of the Certificate of Merger with the Secretary of State of the State of
Delaware or at such other time thereafter as is provided in the Certificate of Merger (the “Effective Time”), the Merger will be effective in accordance with Delaware law. 

SECTION 1.03. Immediately after giving effect to the Merger, no Default or Event of Default shall have occurred and be continuing. 

SECTION 1.04. The amendments contained herein do not adversely affect the rights of any Holder. 

ARTICLE II 
 AGREEMENT TO
BE BOUND 
 SECTION 2.01. Holdings hereby assumes, jointly and severally with the Company, the due and punctual payment of the principal of,
and interest on, the Notes on the dates and in the manner provided in the Notes and in the Indenture and the due and punctual performance and observance of all of the covenants and conditions of the Indenture to be performed by the Company. 

SECTION 2.02. No past, present or future director, officer, employee, incorporator, stockholder or agent of Holdings, as such, will have any
liability for any obligations of the Company, Holdings or any 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.

  
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 ARTICLE III 

AMENDMENTS 
 SECTION 3.01. The
Indenture is hereby amended by: 
 (a) deleting the definition of “Common Stock” in Section 1.01 therein and inserting in lieu
thereof the following (in correct alphabetical order): 
 “Holdings Common Stock” means the common stock, par value $0.001 per
share, of Holdings or any such class or classes resulting from any reclassification or reclassifications thereof and which have no preference in respect of dividends or of amounts payable in the event of any voluntary or involuntary liquidation,
dissolution or winding-up of Holdings and which are not subject to redemption by Holdings; provided that if at any time there shall be more than one such resulting class, the shares of each such class then so issuable shall be substantially in the
proportion which the total number of shares of such class resulting from all such reclassifications bears to the total number of shares of all such classes resulting from all such reclassifications. 

(b) adding the following definition to Section 1.01 (in correct alphabetical order): 

“Holdings” means Sirius XM Holdings Inc., a Delaware corporation. 

(c) every reference in the Indenture to “Common Stock” shall be amended and deemed to be a reference to “Holdings Common
Stock”. 
 SECTION 3.02. Except as amended hereby, the Indenture is in all respects ratified and confirmed and all the terms thereof
shall remain in full force and effect and the Indenture, as so amended, shall be read, taken and construed as one and the same instrument. 

ARTICLE IV 
 MISCELLANEOUS

 SECTION 4.01. The Trustee accepts the modification of the Indenture effected by this Supplemental Indenture, but only upon the terms and
conditions set forth in the Indenture. Without limiting the generality of the foregoing, 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, Holdings and the Company. 

  
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 SECTION 4.02. If and to the extent that any provision of this Supplemental Indenture limits,
qualifies or conflicts with another provision included in this Supplemental Indenture or in the Indenture, in either case that is required to be included in this Supplemental Indenture or in the Indenture by any of the provisions of Section 310
to 317, inclusive, of the Trust Indenture Act of 1939, such required provision shall control. 
 SECTION 4.03. This Supplemental Indenture
and the Notes shall be governed by, and construed in accordance with, the laws of the State of New York. 
 SECTION 4.04. This Supplemental
Indenture may be executed in any number of counterparts, each of which so executed shall be deemed to be an original, but all of which counterparts together shall constitute but one and the same instrument. 

SECTION 4.05. The Section headings herein are for convenience only and will not affect the construction hereof. 

SECTION 4.06. Nothing in this Supplemental Indenture is intended to or shall provide any rights to any parties other than those expressly
contemplated by this Supplemental Indenture. 
 SECTION 4.07. This Supplemental Indenture shall become effective as of the Effective Time.

 SECTION 4.08. Pursuant to Section 11.11 of the Indenture, the Company has caused to be filed with the Trustee and the Exchange Agent
and to be mailed to each Holder the information required by such Section within the time period required. 
 SECTION 4.09. Pursuant to
Section 11.07 of the Indenture, the Company shall cause notice of the execution of this Supplemental Indenture to be mailed to each Holder, at the address of such Holder as it appears on the register of the Notes maintained by the Registrar,
within 20 days after the date of this Supplemental Indenture. 
 [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. 
  

			
	SIRIUS XM RADIO INC.
		
	By:	 	/s/ Patrick L. Donnelly
		 	Patrick L. Donnelly
		 	 Executive Vice President, General Counsel and Secretary

	
	SIRIUS XM HOLDINGS INC.
		
	By:	 	/s/ Patrick L. Donnelly
		 	Patrick L. Donnelly
		 	 Executive Vice President, General Counsel and Secretary

	
	SATELLITE CD RADIO, INC.
		
	By:	 	/s/ Patrick L. Donnelly
		 	Patrick L. Donnelly
		 	Secretary
	
	XM 1500 ECKINGTON LLC
		
	By:	 	/s/ Patrick L. Donnelly
		 	Patrick L. Donnelly
		 	Secretary
	
	XM INVESTMENT LLC
		
	By:	 	/s/ Patrick L. Donnelly
		 	Patrick L. Donnelly
		 	Secretary

  
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	XM RADIO INC.
		
	By:	 	/s/ Patrick L. Donnelly
		 	Patrick L. Donnelly
		 	Secretary
	
	XM EMALL INC.
		
	By:	 	/s/ Patrick L. Donnelly
		 	Patrick L. Donnelly
		 	Secretary

  
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	 THE BANK OF NEW YORK MELLON,

  as Trustee

		
	 By:
	 	/s/ Laurence J. O’Brien
		 	 Name: Laurence J. O’Brien

		 	Title:   Vice President

  
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