Document:

Exhibit 4.1

 Exhibit 4.1 
 TEKTRONIX, INC. 
 And 
 U.S. BANK NATIONAL ASSOCIATION, as Trustee 
  

 FIRST SUPPLEMENTAL INDENTURE 
 to 

Indenture 
 Dated as of June 29, 2007

  

 1.625% Senior
Convertible Notes Due 2012 

 THIS FIRST SUPPLEMENTAL INDENTURE (the “First Supplemental Indenture”) dated as of
November 21, 2007, is between Tektronix, Inc. (the “Company”), a corporation duly organized under the laws of the State of Oregon, and U.S. Bank National Association (the “Trustee”), a national banking association.
Capitalized terms not defined herein shall have the meaning set forth in the Indenture. 
 WHEREAS, the Company executed and delivered to the
Trustee an Indenture dated as of June 29, 2007 (the “Original Indenture;” the Original Indenture as amended by this First Supplemental Indenture referred to as the “Indenture”) providing for the issuance of the
Company’s 1.625% Senior Convertible Notes due 2012; and 
 WHEREAS, pursuant to Section 10.01 of the Indenture, the Company and the
Trustee may, without notice to or consent of any Holders, enter into one or more indentures supplemental to the Indenture, in form satisfactory to the Trustee, providing for conversion rights of Holders if any reclassification or change of Common
Stock or any consolidation, merger or sale of all or substantially all of the Company’s property and assets occurs or otherwise complying with the provisions of the Indenture in the event of a merger, consolidation or transfer of assets;

 WHEREAS, on October 14, 2007, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with
Danaher Corporation (“Danaher”) and Raven Acquisition Corp., an indirect wholly owned subsidiary of Danaher (“Purchaser”); 
 WHEREAS, pursuant to the Merger Agreement, the Purchaser has merged with and into the Company (the “Merger”) on November 21, 2007 (the “Merger Effective Time”); 
 WHEREAS, in the Merger, holders of Common Stock (other than shares of Common Stock held by Danaher, the Company, or any of their subsidiaries, including
Purchaser) were converted into the right to receive $38 per share in cash, without interest thereon and less any required withholding taxes (the “Merger Consideration”); 
 WHEREAS, the Company delivered an Opinion of Counsel to the Trustee pursuant to Sections 4.10, 10.01, 10.03 and 11.04 of the Indenture; 
 WHEREAS, the Company delivered an Officer’s Certificate to the Trustee pursuant to Sections 4.10, 10.01, 10.03 and 11.04 of the Indenture; and

 WHEREAS, all other actions necessary to make this First Supplemental Indenture a legal, valid and binding obligation of the parties hereto
in accordance with its terms and the terms of the Indenture have been performed; 
 NOW, THEREFORE, in consideration of the premises and for
other good and valuable consideration, the receipt of which is hereby acknowledged, the Company covenants and agrees with the Trustee, for the equal and proportionate benefit of all present and future holders of Securities, as follows: 

 

 1 

 1. For all purposes of this First Supplemental Indenture, except as otherwise herein expressly provided
or unless the context otherwise requires: (i) the terms and expressions used herein shall have the same meanings as corresponding terms and expressions used in the Indenture; and (ii) the words “herein”, “hereof” and
“hereby” and other words of similar import used in this First Supplemental Indenture refer to this First Supplemental Indenture as a whole and not to any particular Section hereof. 
 2. In accordance with Section 4.10 of the Indenture, from and after the Merger Effective Time, upon conversion of Securities, the settlement of the
Conversion Value in accordance with the provisions of Section 4.12 shall be based on, and each Remaining Share, if any, deliverable in respect of any such settlement shall consist of, the Merger Consideration, which is the kind and amount of
consideration which holders of Common Stock are entitled to receive in respect of each share of Common Stock in the Merger. 
 3. The Trustee
accepts this First Supplemental Indenture and the amendment of the Indenture effected hereby and agrees to execute the trust created by the Indenture as hereby amended, but only upon the terms and conditions set forth in the Indenture, including the
terms and provisions defining and limiting the liabilities and responsibilities of the Trustee, which terms and provisions shall in like manner define and limit its liabilities in the performance of the trust created by the Indenture as hereby
amended. The Trustee assumes no responsibility for the correctness of the recitals contained herein, which shall be taken as the statements of the Company. The Trustee makes no representation and shall have no responsibility as to the validity of
this First Supplemental Indenture or the proper authorization or the due execution hereof by the Company. 
 4. Except as expressly amended
by this First Supplement Indenture, the Indenture and the Securities issued thereunder are in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. 
 5. This First Supplemental Indenture shall form a part of the Indenture for all purposes, and every holder of Securities heretofore or hereafter
authenticated and delivered shall be bound hereby. 
 6. This First Supplemental Indenture may be executed in any number of counterparts,
each of which when so executed shall be deemed to be an original, and all of such counterparts shall together constitute one and the same instrument. 
 7. This First Supplemental Indenture shall be construed in accordance with and governed by the laws of the State of New York without given effect to the conflicts of laws principals thereof. 
  

 2 

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

			
	TEKTRONIX, INC.
		
	By:	 	 /s/ JAMES F. DALTON

		 	James F. Dalton
		 	Sr. Vice President, General Counsel and Secretary
	
	U.S. BANK NATIONAL ASSOCIATION, as Trustee
		
	By:	 	 /s/ CHERYL K. NELSON

		 	Cheryl K. Nelson
		 	Vice President

  

 3Second Amendment to Amended and Restated Employment Agreement

 Exhibit 10.1 
 SECOND AMENDMENT TO 
 AMENDED AND RESTATED EMPLOYMENT AGREEMENT 
 This Second Amendment to Amended and Restated Employment Agreement (this “Amendment”) is entered this 26th day of November, 2007 (the
“Effective Date”), by and between Far East Energy Corporation, a Nevada corporation (the “Company”) and Michael R. McElwrath (the “Executive”). 
 RECITALS 
 WHEREAS, the Company and
the Executive entered into that certain Amended and Restated Employment Agreement dated effective December 23, 2004 (as amended, the “Existing Agreement”); and 
 WHEREAS, the Company and the Executive desire to amend the Existing Agreement on the terms herein provided. 
 NOW, THEREFORE, in consideration of the premises and mutual covenants and agreements of the parties herein contained, the parties hereto agree as
follows: 
 ARTICLE I 
 Definitions 
 Section 1.01. Capitalized terms used in this Amendment that are not defined herein shall have the meanings
ascribed thereto by the Existing Agreement. 
 ARTICLE II 
 Amendments 
 Section 2.01. Section 1. Section 1 of the Existing Agreement is
hereby amended and restated to read in its entirety as follows:  
 “1. Term. The term of employment under this Agreement
shall commence and this Agreement shall be effective as of December 23, 2004, and shall terminate on October 13, 2010, unless sooner terminated in accordance with the terms hereof (the “Term”). In addition, upon mutual
agreement of the Company and Executive, this Agreement may be extended on the same terms and conditions for such period as the parties may agree.” 
 ARTICLE III 
 Miscellaneous 
 Section 3.01. Ratifications. The terms and provisions set forth in this Amendment shall modify and supersede all inconsistent terms and provisions set forth
in the Existing Agreement. Except as expressly modified and superseded by this Amendment, the Company and the Executive each hereby (a) ratifies and confirms the Existing Agreement, (b) agrees that the same shall continue in full force and
effect, and (c) agrees that the same are the legal, valid and binding obligations of the Company and the Executive, enforceable against the Company and the Executive in accordance with its respective terms. 
 Section 3.02. Severability. If, for any reason, any provision of this Amendment is held invalid, illegal or unenforceable such invalidity, illegality or
unenforceability shall not affect any other provision of this Amendment not held so invalid, illegal or unenforceable, and each such other provision shall, to the full extent 

 
consistent with law, continue in full force and effect. In addition, if any provision of this Amendment shall be held invalid, illegal or unenforceable in
part, such invalidity, illegality or unenforceability shall in no way affect the rest of such provision not held so invalid, illegal or unenforceable and the rest of such provision, together with all other provisions of this Amendment, shall, to the
full extent consistent with law, continue in full force and effect. If any provision or part thereof shall be held invalid, illegal or unenforceable, to the fullest extent permitted by law, a provision or part thereof shall be substituted therefor
that is valid, legal and enforceable. 
 Section 3.03. Headings. The headings of Sections are included solely for convenience of reference and
shall not control the meaning or interpretation of any of the provisions of this Amendment. 
 Section 3.04. Governing Law. This Amendment has
been executed and delivered in the State of Texas, and its validity, interpretation, performance and enforcement shall be governed by the laws of Texas, without giving effect to any principles of conflicts of law. 
 Section 3.05. Withholding. All amounts paid pursuant to this Amendment shall be subject to withholding for taxes (federal, state, local or otherwise) to the
extent required by applicable law. 
 Section 3.06. Counterparts. This Amendment may be executed in counterparts, each of which, when taken
together, shall constitute one original Amendment. 
 Section 3.07. Waiver. No term or condition of this Amendment shall be deemed to have been
waived, nor shall there be any estoppel against the enforcement of any provision of this Amendment or the Existing Agreement, except by written instrument of the party charged with such waiver or estoppel. No such written waiver shall be deemed a
continuing waiver unless specifically stated therein, and each such waiver shall operate only as to the specific term or condition waived and shall not constitute a waiver of such term or condition for the future or as to any act other than that
specifically waived. 
 Section 3.08. Entire Agreement. The Existing Agreement and this Amendment, together, contain the entire understanding
between the parties hereto and supersedes any prior employment agreement between the Company or any predecessor of the Company and Executive except that this Amendment shall not affect or operate to reduce any benefit or compensation inuring to
Executive of a kind elsewhere provided and not expressly provided for in the Existing Agreement or this Amendment. 

 IN WITNESS WHEREOF, the Company has caused its duly authorized officer or director to execute and attest to this
Amendment, and Executive has placed this signature hereon, effective as of the date below. 
  

							
	FAR EAST ENERGY CORPORATION	 	
				
	By:	 	 /s/ Randall D. Keys
	 		 	Date: November 26, 2007
	Name:	 	Randall D. Keys	 		 	
	Title:	 	Chief Financial Officer	 		 	
			
	EXECUTIVE:	 		 	
			
	 /s/ Michael R. McElwrath
	 		 	Date: November 26, 2007
	Michael R. McElwrath

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