Document:

David Bailey

        President and CEO

 

May 8, 2007

 

Mr. Robin S. Hughes

1911 Walker Avenue

Monrovia, CA 91016

 

Dear Robin:

 

STAAR Surgical Company is pleased to offer you the position
of Vice President of Marketing reporting to David Bailey, President and Chief Executive Officer. Should you accept this offer,
your beginning wage would be $9038.46 per bi-weekly pay period for 26 pay periods per year ($235,000 per year), in addition to
all the benefits offered in our current policy. Additionally, STAAR Surgical Company would provide to you a Variable Universal
Executive Life Insurance policy, which would include a $500,000 death benefit.

 

Subject to approval by the Compensation Committee of the Board
of Directors, you will receive an option to purchase up to 50,000 shares of STAAR Surgical Company Common Stock. The grant will
be effective, and pricing will be determined, at the next regular meeting of the Compensation Committee, following your first day
of employment. The options will vest over a period of three years, commencing on your first day of employment.

 

In addition, you will be eligible for an annual bonus of up
to 40% of your annual salary, which will be payable on an annual basis and subject to the successful achievement of corporate and
personal goals and objectives.

 

Subject to approval by the Compensation Committee of the Board
of Directors, STAAR Surgical Company agrees to pay for certain relocation costs up to $25,000 that you may incur in connection
with your move to California, provided that you execute the attached "STAAR Surgical Company Relocation Repayment Agreement"
and return it to the Company by May 15, 2007 with the signed copy of this offer letter.

 

Upon the acceptance of this offer and the successful completion
of a reference check, background check and pre-employment physical, you may begin work on or before June 4, 2007. Please note that
a drug test is included in the physical.

 

On your first day of employment you will need to bring with
you identification in order to complete all necessary paperwork, including your Employment Eligibility Verification (Form 1-9).

 

	1911 Walker Avenue, Monrovia, CA 91016	t. 626.303.7902	www.staar.com

 

    	 

    	 

    

 

May 8, 2007

Page 2

 

You will be asked to do your
best to accomplish our mission working as part of our team. This offer is valid through May 15, 2007.

 

Sincerely,

 

	/s/ David Bailey	 	/s/ Robin S. Hughes
	David Bailey	 	Robin S. Hughes
	President and Chief Executive Officer	 	Vice President of Marketing

 

	1911 Walker Avenue, Monrovia, CA 91016	t. 626.303.7902	www.staar.comExhibit
10.26

 

AMENDMENT TO TAX RECEIVABLE AGREEMENT

 

This Amendment to the Tax Receivable Agreement dated as of October
30, 2007 (the “Agreement”), is hereby entered into by and among Pzena Investment Management, Inc., a Delaware corporation
(the “Corporation”), Pzena Investment Management, LLC, a Delaware limited liability company (“PIM”) and
each of the undersigned parties hereto identified as the “Members” Capitalized terms used but not defined herein have
the meanings set forth in the Agreement.

 

Preliminary Statement

 

WHEREAS, the Corporation, PIM and certain
Members wish to amend the Agreement to clarify certain tax benefits payment provisions therein (this “Amendment”);

 

WHEREAS, pursuant to Section 7.06 of the
Agreement, provisions therein may generally be modified or amended by written consent;

 

WHEREAS, Section 7.13 of the Agreement states
that the Agreement shall be treated as part of the Pzena Investment Management, LLC Amended and Restated Operating Agreement, as
further amended; and

 

WHEREAS, pursuant to Section 11.01(a) of
the Operating Agreement, terms and provisions therein may generally be modified or amended at any time and from time to time by
written consent.

 

NOW THEREFORE, pursuant to the above
referenced sections, the Tax Receivable Agreement is amended as follows:

 

		1.	Section 3.03 “Pro Rata Payments” shall be replaced in its entirety by the following:

 

“For the avoidance of
doubt, to the extent that (i) the Corporation’s deductions with respect to any Basis Adjustment is limited in a particular
Taxable Year or (ii) the Corporation lacks sufficient funds to satisfy or is prevented under any credit agreement or other agreement
from satisfying its obligations to make all Tax Benefit Payments due in a particular Taxable year, the limitation on the deduction,
or the Tax Benefit Payments that may be made, as the case may be, shall be taken into account or made for the Applicable member
as PIM may determine in its sole discretion, and in a manner that it considers to be equitable to all Continuing and Exiting Members.”

 

		2.	Except as set forth herein,
the provisions of the Agreement remain in full force and effect.

 

This Amendment may be executed in one or more counterparts,
and each of such counterparts shall for all purposes be deemed to be an original.

 

    	 

    	 

    

 

IN WITNESS WHEREOF, this Amendment has been duly executed to
be effective as of December 31, 2012.

 

Pzena Investment Management, Inc.,

The Corporation

 

	 	 
	By: Richard S. Pzena, Chief Executive Officer

 

Pzena Investment Management, LLC,

PIM

 

	 	 
	By: Richard S. Pzena, Chief Executive Officer

 

    	 

    	 

    

 

MEMBERS

	 	 	 
	 	 	 
	The Aaron Pzena Family Trust	 	Bill Andolfi
	 	 	 
	 	 	 
	Joan Berger	 	Rakesh Bordia
	 	 	 
	 	 	 
	Caroline Cai	 	The Carrie Esther Goetz Trust
	 	 	 
	 	 	 
	Kevin Clegg	 	Steven M. Coffey
	 	 	 
	 	 	 
	The Daniel Pzena Family Trust	 	Antonio DeSpirito
	 	 	 
	 	 	 
	Jessica Doran	 	The Eric Pzena Family Trust
	 	 	 
	 	 	 
	Evan Fire	 	Allison Fisch

 

    	 

    	 

    

 

	 	 	 
	John Flynn	 	Evan Fox
	 	 	 
	 	 	 
	John P. Goetz	 	Fitzgerald S. Haney
	 	 	 
	 	 	 
	Michel V. Hanigan	 	Lawrence Kohn
	 	 	 
	 	 	 
	Keith Komar	 	James Krebs
	 	 	 
	 	 	 
	William L. Lipsey	 	LJK Trust I
	 	 	 
	 	 	 
	Lauren Lopes	 	Brian Mann
	 	 	 
	 	 	 
	The Michael D. Peterson 2009 Grantor 

Retained Annuity Trust	 	Valerie R. Mignone

 

    	 

    	 

    

 

	 	 	 
	T.V.R. Murti	 	Nicholas Padgen
	 	 	 
	 	 	 
	Wayne Palladino	 	Michael D. Peterson
	 	 	 
	 	 	 
	Jacques Pompy	 	Richard S. Pzena
	 	 	 
	 	 	 
	Eli Rabinowich	 	The Rachel Theresa Goetz Trust
	 	 	 
	 	 	 
	Lisa Roth	 	The Sarah M. Peterson 2009 Grantor
	 	 	Retained Annuity Trust
	 	 	 
	 	 	 
	Ben Silver	 	Manoj Tandon
	 	 	 
	 	 	 
	Franco Tapia	 	The William Lipsey Dynasty Trust

 

    	 

    	 

    

 

	 	 	 
	David Y. Zhao	 	1997 Joel Greenblatt Retained Annuity Trust
	 	 	 
	 	 	 
	The ACJF Trust	 	America Media Consultants
	 	 	 
	 	 	 
	Gary & Sharon Curhan	 	Joel Greenblatt
	 	 	 
	 	 	 
	Robert Goldstein	 	Joel Greenblatt for Jordan Greenblatt
	 	 	 
	 	 	 
	Joel Greenblatt for Jonathan Greenblatt	 	Joel Greenblatt for Melissa Greenblatt
	 	 	 
	 	 	 
	Joel Greenblatt for Matthew Greenblatt	 	Edward B. Grier III
	 	 	 
	 	 	 
	Joel Greenblatt for Rebecca Greenblatt	 	Amelia C. Jones Feinberg
	 	 	 
	 	 	 
	Joel M. Greenblatt 2002 Blithe GRAT	 	Milestone Associates, LLC

 

    	 

    	 

    

 

	 	 	 
	 	 	 
	The Michele Pzena Family Trust	 	Piping Brook, LLC
	 	 	 
	 	 	 
	Bruce Newberg	 	Gary Warren
	 	 	 
	 	 	 
	Sobie InvestmentsExhibit 4.1
    

    
      Execution Copy
    

    

    

    
      AMENDMENT NO. 2 TO RIGHTS AGREEMENT
    

    
      Amendment No. 2, dated as of March 11, 2013 (this “Amendment”),
      to the Rights Agreement, dated as of January 27, 2005, as amended (the “Rights
      Agreement”), by and between Calgon Carbon Corporation, a
      Delaware corporation (the “Company”) and Registrar
      and Transfer Company, a New Jersey corporation, successor to StockTrans,
      Inc. (the “Rights Agent”).
    

    
      RECITALS
    

    
      WHEREAS, the Company and the Rights Agent are parties to the Rights
      Agreement; and
    

    
      WHEREAS, pursuant to Section 27(a) of the Rights Agreement, prior to the
      Distribution Date, and subject to the provisions of Section 27(b) of the
      Rights Agreement, the Company and the Rights Agent shall, if the Company
      so directs, supplement or amend any provision of the Rights Agreement in
      accordance with the provisions of such Section; and
    

    
      WHEREAS, the Board of Directors of the Company has determined that it is
      in the best interests of the Company and its stockholders to amend the
      Rights Agreement as set forth in this Amendment; and
    

    
      WHEREAS, the Rights are currently redeemable, and pursuant to the terms
      of the Rights Agreement and in accordance with Section 27 of the Rights
      Agreement, the Company has directed that the Rights Agreement be amended
      as set forth in this Amendment, and hereby directs the Rights Agent to
      execute this Amendment.
    

    
      AGREEMENT
    

    
      NOW THEREFORE, in consideration of the foregoing and the mutual
      agreements set forth in the Rights Agreement and in this Amendment, the
      parties hereto hereby amend the Rights Agreement as follows:
    

    
      1.  Section 1(a) of the Rights Agreement is hereby amended and restated
      in its entirety as follows:
    

    
                “(a) “Acquiring
      Person” shall mean any Person who or which, together with all
      Affiliates and Associates of such Person, shall be the Beneficial Owner
      of 15% or more of the shares of Common Stock then outstanding, but shall
      not include:
    

    
      (i)       the Company;
    

    
      (ii)      any Subsidiary of the Company;
    

    
      (iii)     any employee benefit plan or employee stock plan of the
      Company, or of any Subsidiary of the Company, or any Person or entity
      organized, appointed or established by the Company for or pursuant to
      the terms of any such plan;
    

    

    

    
      
        

        

      

      
        

        

        
          

        

      

      
        

        

      

    

    

    

    
                (iv)      any Person who was, together with such Person’s
      Affiliates and Associates, the Beneficial Owner of 15% or more of the
      then outstanding shares of Common Stock on March 11, 2013 (the “Amendment
      Date”), provided that after the Amendment Date such Person,
      together with such Person’s Affiliates and Associates, does not (A)
      become the Beneficial Owner (other than through inadvertence and under
      circumstances where (i) such Person agrees to the divestiture of a
      number of shares of Common Stock necessary for such Person to excepted
      from the definition of an Acquiring Person or (ii) such Person’s
      acquisition of additional shares of Common Stock is subsequently
      approved by the Board of Directors of the Company) of additional shares
      of Common Stock representing one percent (1%) or more of the then
      outstanding shares of Common Stock, in which case such Person shall be
      deemed to be an Acquiring Person for purposes of this Agreement, or (B)
      decrease its percentage ownership below 15% of the then outstanding
      shares of Common Stock, in which case such Person shall no longer be
      eligible to be excepted from the definition of Acquiring Person by
      operation of this Subsection 1(a)(iv); or
    

    
      (v)       any Person who would otherwise become an Acquiring Person
      solely by virtue of a reduction in the number of outstanding shares of
      Common Stock; provided, however, that such Person shall be an Acquiring
      Person if, subsequent to such reduction, such Person shall become the
      Beneficial Owner of any additional shares of Common Stock.”
    

    
      2.  Exhibits B and C to the Rights Agreement are hereby deemed amended
      in a manner consistent with this Amendment.  
    

    
      3.  Capitalized terms used without other definition in this Amendment
      are used as defined in the Rights Agreement.
    

    
      4.  This Amendment shall be deemed to be a contract made under the laws
      of the State of Delaware and for all purposes shall be governed by and
      construed in accordance with the laws of such State applicable to
      contracts to be made and to be performed entirely within such State.
    

    
      5.  The Rights Agreement will not otherwise be supplemented or amended
      by virtue of this Amendment, but will remain in full force and effect.
    

    
      6.  This Amendment may be executed in any number of counterparts and
      each of such counterparts shall for all purposes be deemed to be an
      original, and all such counterparts shall together constitute but one
      and the same instrument.  A signature to this Agreement transmitted
      electronically will have the same authority, effect and enforceability
      as an original signature.
    

    
      7.  This Amendment shall be effective as of the date first above written
      and all references to the Rights Agreement shall, from and after such
      time, be deemed to be references to the Rights Agreement as amended
      hereby.
    

    

    

    
      
        

        

      

      
        
          - 2 -
        

        
          

        

      

      
        

        

      

    

    

    

    
      8.  The undersigned officer of the Company, being duly authorized on
      behalf of the Company, hereby certifies in his or her capacity as an
      officer on behalf of the Company to the Rights Agent that this Amendment
      is in compliance with the terms of Section 27 of the Rights Agreement.
    

    
      9.  By its execution and delivery hereof, the Company directs the Rights
      Agent to execute this Amendment.  
    

    
      [Signatures appear on following page.]
    

    

    

    
      
        

        

      

      
        
          - 3 -
        

        
          

        

      

      
        

        

      

    

    

    

    
      IN WITNESS WHEREOF, this Amendment has been duly executed by the
      Company and the Rights Agent as of the effective date stated above.
    

    	
           
        	
          
            CALGON CARBON CORPORATION
          

        
	

        	
           
        
	

        	
           
        
	

        	
          By:
        	
          
            /s/ Randall S. Dearth
          

        
	

        	

        	
          Randall S. Dearth
        
	

        	

        	
          President and Chief Executive Officer
        
	

        	

        	
           
        
	

        	

        	
           
        
	

        	
          
            REGISTRAR AND TRANSFER COMPANY,
          

        
	

        	
          
            as Rights Agent
          

        
	

        	
           
        
	

        	
           
        
	

        	
          By:
        	
          
            /s/ Nicola Giancaspro
          

        
	

        	

        	
          
            Name: Nicola Giancaspro
          

        
	

        	

        	
          Title: Vice President
        

    

    

    

    	
          
            - 4 -

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