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  Exhibit 10.5    
    

 
 

AMENDMENT NO. 3
  TO
  EMPLOYMENT AGREEMENT    
    

        This AMENDMENT NO. 3 (the "Amendment") to the Employment Agreement, dated May 1, 1997, as amended (the "Employment
Agreement"), by and between Walco International, Inc., a Delaware corporation (the "Company"), and James C. Robison (the "Executive") is entered into as of the 14th day of March,
2011. 

        WHEREAS,
Animal Health International, Inc., a Delaware corporation and the parent company of the Company, has entered into an Agreement and Plan of Merger, as of March 14,
2011, with Lextron, Inc., a Colorado corporation, and Buffalo Acquisition, Inc., a Delaware corporation and a wholly owned subsidiary of Lextron, Inc. (the "Merger Agreement");
and 

        WHEREAS,
the parties now wish to amend the Employment Agreement to provide for payment of Executive's cash severance under the Employment Agreement upon the consummation of the
transaction contemplated in the Merger Agreement (the "Closing"). 

        NOW,
THEREFORE, for good and valuable consideration the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows. 

 
 

           1.    Capitalized Terms.     All capitalized terms used, but not defined herein, shall have the same meaning
prescribed in the Employment Agreement or recitals to this Amendment as
appropriate. 

 
 

           2.    Severance Pay.     Notwithstanding anything in the Employment Agreement to the contrary, if the
Executive remains employed with the Company from the date hereof through the date of
Closing, then the Company will pay an amount equal to twenty-four (24) months of the Executive's Base Salary then in effect (the "Severance Pay") to the Executive in a single cash
lump sum upon the date of Closing; provided that the Executive signs a release of claims in favor of the Company (other than claims relating to the
Company's continuing obligations to the Executive under the Employment Agreement). If the Severance Pay is paid upon Closing, then all subsequent rights to Severance Pay in the Employment Agreement
will be cancelled. 

 
 

          3.    Confirmation.     All other provisions of the Employment Agreement are hereby ratified and confirmed
and shall remain in full force and effect. 

        IN
WITNESS WHEREOF, the undersigned have executed this Amendment as of the date first written above. 

 

 

					
	EXECUTIVE	 	WALCO INTERNATIONAL, INC.
	
 /s/ JAMES C. ROBISON

 	
 	
By:	
 	
/s/ WILLIAM F. LACEY

 
	James C. Robison	 	Name:	 	William F. Lacey
	 	 	Title:	 	 Senior Vice President and Chief Financial Officer

 

 

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Exhibit 10.5

AMENDMENT NO. 3 TO EMPLOYMENT AGREEMENT

1. Capitalized Terms.

2. Severance Pay.

3. Confirmation.QuickLinks
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  Exhibit 10.6    
    

 
 

AMENDMENT NO. 4
  TO
  EMPLOYMENT AGREEMENT    
    

        This AMENDMENT NO. 4 (the "Amendment") to the Employment Agreement, dated April 1, 2006, as amended (the "Employment
Agreement"), by and between Walco International, Inc., a Delaware corporation (the "Company"), and Damian Olthoff (the "Executive") is entered into as of the 14th day of March, 2011. 

        WHEREAS,
Animal Health International, Inc., a Delaware corporation and the parent company of the Company, has entered into an Agreement and Plan of Merger, as of March 14,
2011, with Lextron, Inc., a Colorado corporation, and Buffalo Acquisition, Inc., a Delaware corporation and a wholly owned subsidiary of Lextron, Inc. (the "Merger Agreement");
and 

        WHEREAS,
the parties now wish to amend the Employment Agreement to provide for payment of Executive's cash severance under the Employment Agreement upon the consummation of the
transaction contemplated in the Merger Agreement (the "Closing"). 

        NOW,
THEREFORE, for good and valuable consideration the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows. 

 
 

           1.    Capitalized Terms.     All capitalized terms used, but not defined herein, shall have the same meaning
prescribed in the Employment Agreement or recitals to this Amendment as
appropriate. 

 
 

           2.    Severance Pay.     Notwithstanding anything in the Employment Agreement to the contrary, if the
Executive remains employed with the Company from the date hereof through the date of
Closing, then the Company will pay an amount equal to twelve (12) months Base Salary at the highest rate in effect at any time during the two (2) years prior to and including the date of
Closing (the "Severance Pay") to the Executive in a single cash lump sum upon the date of Closing; provided that the Executive signs a release of claims
in favor of the Company (other than claims relating to the Company's continuing obligations to the Executive under the Employment Agreement). If the Severance Pay is paid upon Closing, then all
subsequent rights to Severance Pay in the Employment Agreement will be cancelled. 

 
 

          3.    Confirmation.     All other provisions of the Employment Agreement are hereby ratified and confirmed
and shall remain in full force and effect. 

        IN
WITNESS WHEREOF, the undersigned have executed this Amendment as of the date first written above. 

 

 

					
	EXECUTIVE	 	WALCO INTERNATIONAL, INC.
	
 /s/ DAMIAN OLTHOFF

 	
 	
By:	
 	
/s/ JAMES C. ROBISON

 
	Damian Olthoff	 	Name:	 	James C. Robison
	 	 	Title:	 	 President and C.E.O.

 

 

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Exhibit 10.6

AMENDMENT NO. 4 TO EMPLOYMENT AGREEMENT

1. Capitalized Terms.

2. Severance Pay.

3. Confirmation.QuickLinks
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  Exhibit 10.7    
    

 
 

AMENDMENT NO. 5
  TO
  EMPLOYMENT AGREEMENT    
    

        This AMENDMENT NO. 5 (the "Amendment") to the Employment Agreement, dated August 15, 2003, as amended (the "Employment
Agreement"), by and between Walco International, Inc., a Delaware corporation (the "Company"), and William F. Lacey (the "Executive") is entered into as of the 14th day of March,
2011. 

        WHEREAS,
Animal Health International, Inc., a Delaware corporation and the parent company of the Company, has entered into an Agreement and Plan of Merger, as of March 14,
2011, with Lextron, Inc., a Colorado corporation, and Buffalo Acquisition, Inc., a Delaware corporation and a wholly owned subsidiary of Lextron, Inc. (the "Merger Agreement");
and 

        WHEREAS,
the parties now wish to amend the Employment Agreement to provide for payment of Executive's cash severance under the Employment Agreement upon the consummation of the
transaction contemplated in the Merger Agreement (the "Closing"). 

        NOW,
THEREFORE, for good and valuable consideration the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows. 

 
 

           1.    Capitalized Terms.     All capitalized terms used, but not defined herein, shall have the same meaning
prescribed in the Employment Agreement or recitals to this Amendment as
appropriate. 

 
 

           2.    Severance Pay.     Notwithstanding anything in the Employment Agreement to the contrary, if the
Executive remains employed with the Company from the date hereof through the date of
Closing, then the Company will pay an amount equal to eighteen (18) months Base Salary at the highest rate in effect at any time during the two (2) years prior to and including the date
of Closing (the "Severance Pay") to the Executive in a single cash lump sum upon the date of Closing; provided that the Executive signs a release of
claims in favor of the Company (other than claims relating to the Company's continuing obligations to the Executive under the Employment Agreement). If the Severance Pay is paid upon Closing, then all
subsequent rights to Severance Pay in the Employment Agreement will be cancelled. 

 
 

          3.    Confirmation.     All other provisions of the Employment Agreement are hereby ratified and confirmed
and shall remain in full force and effect. 

        IN
WITNESS WHEREOF, the undersigned have executed this Amendment as of the date first written above. 

 

 

					
	EXECUTIVE	 	WALCO INTERNATIONAL, INC.
	
 /s/ WILLIAM F. LACEY

 	
 	
By:	
 	
/s/ JAMES C. ROBISON

 
	William F. Lacey	 	Name:	 	James C. Robison
	 	 	Title:	 	 President and C.E.O.

 

 

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Exhibit 10.7

AMENDMENT NO. 5 TO EMPLOYMENT AGREEMENT

1. Capitalized Terms.

2. Severance Pay.

3. Confirmation.Exhibit 4.1

 

	
  

  	
  NUMBER 0 02007
  SHARES VOID Osiris* THERAPEUTICS, INC. SEE REVERSE FOR INCORPORATED UNDER THE
  LAWS OF THE STATE OF MARYLAND CERTAIN DEFINITIONS COMMON STOCK CUSIP 68827R
  10 8 THIS CERTIFIES THAT: IS THE OWNER OF VOID FULLY PAID AND NON-ASSESSABLE
  SHARES OF COMMON STOCK OF $.001 PAR VALUE EACH OF OSIRIS THERAPEUTICS, INC.
  transferable on the books of the Corporation in person or by duly authorized
  attorney upon surrender of this certificate duly endorsed or assigned. This
  certificate and the shares represented hereby are subject to the laws of the
  Corporation, as now or hereafter amended. This certificate is not valid until
  countersigned by the Transfer Agent. WITNESS the facsimile seal of the
  Corporation and the facsimile signatures of its duly authorized officers.
  DATED: COUNTERSIGNED: STOCKTRANS, A BROADRIDGE COMPANY 44 WEST LANCASTER AVE.,
  ARDMORE, PA 19003 TRANSFER AGENT BY: AUTHORIZED SIGNATURE SECRETARY & CFO
  PRESIDENT & CEO OSIRIS THERAPEUTICS, INC. CORPORATE SEAL 2010 MARYLAND

  
	
   

  	
   

  

 

	
  

  	
  The following abbreviations, when used in the inscription on the face
  of this certificate, shall be construed as though they were written out in
  full according to applicable laws or regulations: TEN COM - as tenants in
  common UNIF GIFT MIN ACT- Custodian TEN ENT - as tenants by the
  entireties (Cust) (Minor) JT TEN - as joint tenants with right of under
  Uniform Gifts to Minors survivorship and not as tenants Act in common (State)
  Additional abbreviations may also be used though not in the above list. For
  Value Received, hereby sell, assign and transfer unto PLEASE INSERT
  SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE (PLEASE PRINT’ OR
  TYPE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) Shares of the stock represented by the
  within Certificate, and do hereby irrevocably constitute and appoint Attorney
  to transfer the said stock on the books of the within named Corporation with
  full power of substitution in the premises. Dated NOTICE: THE SIGNATURE TO THIS
  ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE
  CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY
  CHANGE WHATSOEVER. THE SIGNATURE TO THE ASSIGNMENT MUST CORRESPOND TO THE
  NAME AS WRITTEN UPON THE FACE OF THIS CERTIFICATE IN EVERY PARTICULAR,
  WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER, AND MUST BE
  GUARANTEED BY A COMMERCIAL BANK OR TRUST COMPANY OR A MEMBER FIRM OF A
  NATIONAL OR REGIONAL OR OTHER RECOGNIZED STOCK EXCHANGE IN CONFORMANCE WITH A
  SIGNATURE GUARANTEE MEDALLION PROGRAM. COLUMBIA FINANCIAL PRINTING CORP. -
  www.stockinformation.com

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