Document:

EX-4.5

 Exhibit 4.5 
 THIRD AMENDMENT TO RIGHTS AGREEMENT 
 This Third Amendment (this
“Amendment”) is made as of February 11, 2013 between Imation Corp., a Delaware corporation (the “Company”), and Wells Fargo Bank, National Association, as successor rights agent (the “Rights Agent”), to the Rights
Agreement dated as of June 21, 2006, as amended, between the Company and The Bank of New York, a New York banking corporation (collectively the “Original Agreement”). 

WHEREAS, the Company desires to amend the Final Expiration Date under the Original Agreement. 

Accordingly, the parties hereby agree as follows: 
 1. Section 7(a) is amended to read as follows: 
 (a) Subject to
Section 7(e) hereof, the registered holder of any Rights Certificate may exercise the Rights evidenced thereby (except as otherwise provided herein including, without limitation, the restrictions on exercisability set forth in Section 9(c)
and Section 11(a)(iii) hereof) in whole or in part at any time after the Distribution Date upon surrender of the Rights Certificate, with the form of election to purchase and the certificate on the reverse side thereof duly completed and
executed, either manually or by facsimile signature, to the Rights Agent at the principal office or offices of the Rights Agent designated for such purpose, together with payment of the aggregate Purchase Price with respect to the total number of
one one-hundredths of a share (or other securities, as the case may be) as to which such surrendered Rights are exercised, at or prior to the earliest of (i) the close of business on February 11, 2013 (the “Final Expiration
Date”), (ii) the time at which the Rights are redeemed as provided in Section 23 hereof (the earlier of (i) and (ii) being herein referred to as the “Expiration Date”), or (iii) the time at which such Rights
are exchanged as provided in Section 24. 
 2. By its execution and delivery hereof, the Company states that this Amendment is in
compliance with the terms of Section 27 of the Original Agreement and directs the Rights Agent to execute this Amendment. 
 3. All terms
used in this Amendment that are defined in the Original Agreement but are not defined herein shall have the meanings ascribed to them in the Original Agreement. All references in the Original Agreement to “this Agreement,” “the
Agreement,” or “hereof” and all references in this Amendment to the Agreement shall hereafter be deemed to be references to the Original Agreement as amended by this Amendment and any other amendment made in accordance with
Section 27 of the Original 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 made and to be performed entirely within such State; provided, however, that the rights, obligations and duties of the Rights
Agent hereunder shall be governed by and construed in accordance with the laws of the State of New York. 
 IN WITNESS WHEREOF, the parties have
caused this Amendment to be duly executed as of the date first written above. 
  

					
	IMATION CORP.	 		 	WELLS FARGO BANK, NATIONAL ASSOCIATION
			
	/s/ Paul R. Zeller	 		 	/s/ Steven J. Hoffman
	Its Senior Vice President and Chief Financial Officer	 		 	Its Vice PresidentEX-4.6

 Exhibit 4.6 
 AMENDMENT NO. 4 TO 
 SHAREHOLDER RIGHTS AGREEMENT 

This Amendment No. 4, effective as of February 12, 2013 (the “Amendment”), amends the Shareholder Rights
Agreement, dated as of June 23, 2009 (as amended by Amendment No. 1 dated as of May 6, 2011, Amendment No. 2 dated as of March 16, 2012, and Amendment No. 3 dated as of March 23, 2012, the “Rights
Agreement”), between Plug Power Inc., a Delaware corporation (the “Company”), and Broadridge Corporate Issuer Solutions, Inc., a Pennsylvania corporation (the “Rights Agent”). Capitalized terms used herein
but not defined herein shall have their defined meanings set forth in the Rights Agreement. 
 WHEREAS, the Company is
conducting an underwritten public offering of shares of common stock, par value $0.01 per share (the “Common Stock”), of the Company and warrants to purchase Common Stock of the Company (the “Warrants” and the
shares of Common Stock of the Company underlying such Warrants, the “Warrant Shares”) with Roth Capital Partners as the managing underwriter (the “February 2013 Offering” and the shares of Common Stock and Warrant
Shares issued by the Company pursuant to the February 2013 Offering, the “February 2013 Offering Shares”); 

WHEREAS, one or more investors that acquire February 2013 Offering Shares (the “Investing Stockholders”) may acquire or
be deemed to have acquired or may have or be deemed to have, upon the closing of the February 2013 Offering, together with their respective Affiliates and Associates, Beneficial Ownership of shares of Common Stock of the Company representing 15% or
more of the shares of Common Stock of the Company then outstanding; 
 WHEREAS, the Board of Directors of the Company has
determined that it is advisable and in the best interest of the Company to amend the Rights Agreement to provide that the Investing Stockholders and their Affiliates and Associates may acquire February 2013 Offering Shares without becoming Acquiring
Persons provided that, generally, the aggregate Beneficial Ownership of an Investing Stockholder and its Affiliates and Associates does not at any time equal or exceed the percentage of the then outstanding shares of Common Stock Beneficially Owned
by such Investing Stockholder and its Affiliates and Associates immediately following the closing of the February 2013 Offering, plus one-half of one percent (1/2%) (the “February 2013 Offering Exemption”); 

WHEREAS, pursuant to Section 27 of the Rights Agreement and under the circumstances specified therein, the Company and the Rights
Agent shall, if the Board of Directors of the Company so directs, supplement or amend any provision of the Rights Agreement without the approval of any holders of certificates representing shares of Common Stock of the Company; 

WHEREAS, the Company now desires to amend the Rights Agreement as set forth in this Amendment, and pursuant to Section 27 of the
Rights Agreement, the Board of Directors of the Company hereby directs that the Rights Agreement should be amended as set forth in this Amendment; and 

 WHEREAS, the Board of Directors of the Company has determined that this Amendment and the
transactions contemplated hereby are advisable and in the best interests of the Company and the holders of Common Stock. 
 NOW,
THEREFORE, the parties hereby agree as follows: 
 1. The following definitions in Section 1 of the Rights Agreement are
hereby amended and restated as follows: 
 “(ss) “SSF Grandfathered Percentage” shall mean, with respect to
any Grandfathered SSF Person, the percentage of the then outstanding shares of Common Stock Beneficially Owned by such Grandfathered SSF Person and its Affiliates and Associates immediately following the closing of the Company’s February 2013
underwritten public offering of Common Stock of the Company and warrants to purchase Common Stock of the Company (the “Warrants”) with Roth Capital Partners as the managing underwriter (the “February 2013
Offering”), plus three percent (3%); provided, however, that, in the event any Grandfathered SSF Person shall sell, transfer, or otherwise dispose of any shares of Common Stock of the Company after the date of this Amendment,
the SSF Grandfathered Percentage shall, subsequent to such sale, transfer or disposition, mean, with respect to such Grandfathered SSF Person, the lesser of (i) the SSF Grandfathered Percentage as in effect immediately prior to such sale,
transfer or disposition or (ii) the percentage of outstanding shares of Common Stock of the Company that such Grandfathered SSF Person Beneficially Owns immediately following such sale, transfer or disposition, plus one-half of one percent
(1/2%) . 
 (tt) “Grandfathered SSF Person” shall mean any of the SSF Stockholders and any Affiliate or
Associate of any of the SSF Stockholders to the extent that any such Person has Beneficial Ownership of 15% or more of the then outstanding shares of Common Stock of the Company immediately following the closing of the February 2013 Offering.
Notwithstanding anything to the contrary provided in this Agreement, any Grandfathered SSF Person who becomes the Beneficial Owner of less than 15% of the shares of Common Stock of the Company then outstanding shall cease to be a Grandfathered SSF
Person and shall be subject to all of the provisions of this Agreement in the same manner as any Person who is not and was not a Grandfathered SSF Person.” 
 2. Section 1 of the Rights Agreement is hereby amended to add the following additional definitions: 
 “(uu) “February 2013 Offering Investing Stockholders” shall mean any investor (other than any SSF Stockholder) that acquires shares of Common Stock of the Company or Warrants
pursuant to the February 2013 Offering and any of such investor’s Affiliates and Associates. 
 (vv) “February 2013
Offering Investor Grandfathered Percentage” shall mean, with respect to any February 2013 Offering Grandfathered Investor, the percentage of 

  
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the then outstanding shares of Common Stock Beneficially Owned by such February 2013 Offering Grandfathered Investor and its Affiliates and Associates immediately following the closing of the
February 2013 Offering, plus one half of one percent (1/2%); provided, however, that, in the event any February 2013 Offering Grandfathered Investor shall sell, transfer, or otherwise dispose of any shares of Common Stock of the
Company after the date of this Amendment, the February 2013 Offering Investor Grandfathered Percentage shall, subsequent to such sale, transfer or disposition, mean, with respect to such February 2013 Offering Grandfathered Investor, the lesser of
(i) the February 2013 Offering Investor Grandfathered Percentage as in effect immediately prior to such sale, transfer or disposition or (ii) the percentage of outstanding shares of Common Stock of the Company that such February 2013
Offering Grandfathered Investor Beneficially Owns immediately following such sale, transfer or disposition, plus one-half of one percent (1/2%) . 
 (ww) “February 2013 Offering Grandfathered Investor” shall mean any of the February 2013 Offering Investors and any Affiliate or Associate of any of the February 2013 Offering Investors
to the extent that any such Person has Beneficial Ownership of 15% or more of the then outstanding shares of Common Stock of the Company immediately following the closing of the February 2013 Offering. Notwithstanding anything to the contrary
provided in this Agreement, any February 2013 Offering Grandfathered Investor who becomes the Beneficial Owner of less than 15% of the shares of Common Stock of the Company then outstanding shall cease to be a February 2013 Offering Grandfathered
Investor and shall be subject to all of the provisions of this Agreement in the same manner as any Person who is not and was not a February 2013 Offering Grandfathered Investor.” 

3. The definition of “Acquiring Person” in Section 1(a) of the Rights Agreement is hereby amended and restated in
its entirety to read as follows: 
 ““Acquiring Person” shall mean any Person (as such term is hereinafter
defined) who or which, together with all Affiliates (as such term is hereinafter defined) and Associates (as such term is hereinafter defined) of such Person, shall be the Beneficial Owner (as such term is hereinafter defined) of 15% or more of the
shares of Common Stock of the Company then outstanding, but shall not include (i) the Company, (ii) any Subsidiary (as such term is hereinafter defined) of the Company, (iii) any employee benefit plan or compensation arrangement of
the Company or any Subsidiary of the Company or (iv) any Person holding shares of Common Stock of the Company organized, appointed or established by the Company or any Subsidiary of the Company for or pursuant to the terms of any such employee
benefit plan or compensation arrangement (the Persons described in clauses (i) through (iv) above are referred to herein as “Exempt Persons”); provided, however, that the term “Acquiring Person”
shall not include any Grandfathered Person, any INTER RAO Grandfathered Person, any SSF Grandfathered Person or any February 2013 Offering Grandfathered Investor, unless (A) with respect to a Grandfathered Person, such Grandfathered Person
becomes the Beneficial Owner of a percentage of the shares of Common Stock of the Company then outstanding equal to or exceeding the Grandfathered Percentage of such Grandfathered Person, (B) with respect to an

  
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INTER RAO Grandfathered Person, such INTER RAO Grandfathered Person becomes the Beneficial Owner of a percentage of the shares of Common Stock of the Company then outstanding equal to or
exceeding the INTER RAO Grandfathered Percentage of such INTER RAO Grandfathered Person, (C) with respect to an SSF Grandfathered Person, such SSF Grandfathered Person becomes the Beneficial Owner of a percentage of the shares of Common Stock
of the Company then outstanding equal to or exceeding the SSF Grandfathered Percentage of such SSF Grandfathered Person, and (D) with respect to a February 2013 Offering Grandfathered Investor, such February 2013 Offering Grandfathered Investor
becomes the Beneficial Owner of a percentage of the shares of Common Stock of the Company then outstanding equal to or exceeding the February 2013 Offering Investor Grandfathered Percentage of such February 2013 Offering Grandfathered Investor.

 Notwithstanding the foregoing, no Person shall become an “Acquiring Person” as the result of an acquisition by the
Company of Common Stock of the Company which, by reducing the number of shares outstanding, increases the proportionate number of shares Beneficially Owned by such Person to 15% (or in the case of a Grandfathered Person, INTER RAO Grandfathered
Person, SSF Grandfathered Person or February 2013 Offering Grandfathered Investor, the Grandfathered Percentage, INTER RAO Grandfathered Percentage, SSF Grandfathered Percentage or February 2013 Offering Investor Grandfathered Percentage applicable
to such Person) or more of the shares of Common Stock of the Company then outstanding; provided, however, that if a Person shall become the Beneficial Owner of 15% (or in the case of a Grandfathered Person, INTER RAO Grandfathered Person, SSF
Grandfathered Person or February 2013 Offering Grandfathered Investor, the Grandfathered Percentage, INTER RAO Grandfathered Percentage, SSF Grandfathered Percentage or February 2013 Offering Investor Grandfathered Percentage applicable to such
Person) or more of the shares of Common Stock of the Company then outstanding by reason of share purchases by the Company and shall, after such share purchases by the Company, become the Beneficial Owner of any additional shares (other than pursuant
to a stock split, stock dividend or similar transaction) of Common Stock of the Company and immediately thereafter be the Beneficial Owner of 15% (or in the case of a Grandfathered Person, INTER RAO Grandfathered Person, SSF Grandfathered Person or
February 2013 Offering Grandfathered Investor, the Grandfathered Percentage, INTER RAO Grandfathered Percentage, SSF Grandfathered Percentage or February 2013 Offering Investor Grandfathered Percentage applicable to such Person) or more of the
shares of Common Stock of the Company then outstanding, then such Person shall be deemed to be an “Acquiring Person.” 

In addition, notwithstanding the foregoing, and notwithstanding anything to the contrary provided in the Agreement including without
limitation in Sections 1(kk), 3(a) or 27, a Person shall not be an “Acquiring Person” if the Board of Directors of the Company determines at any time that a Person who would otherwise be an “Acquiring Person,” has become such
without intending to become an “Acquiring Person,” and such Person divests as promptly as practicable (or within such period of time as the Board of Directors of the Company determines is reasonable) a sufficient number of shares of Common
Stock of the Company so that such Person would no 

  
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longer be an “Acquiring Person,” as defined pursuant to the foregoing provisions of this Section 1(a).” 

4. Section 3(a) of the Rights Agreement is hereby amended and restated in its entirety to read as follows: 

“From the date hereof until the earlier of (i) the Close of Business on the tenth calendar day after the Stock Acquisition Date
or (ii) the Close of Business on the tenth Business Day (or such later calendar day, if any, as the Board of Directors of the Company may determine in its sole discretion) after the date a tender or exchange offer by any Person, other than an
Exempt Person, is first published or sent or given within the meaning of Rule 14d-4(a) of the Exchange Act, or any successor rule, if, upon consummation thereof, such Person could become the Beneficial Owner of 15% (or in the case of a Grandfathered
Person, INTER RAO Grandfathered Person, SSF Grandfathered Person or February 2013 Offering Grandfathered Investor, the Grandfathered Percentage, INTER RAO Grandfathered Percentage, SSF Grandfathered Percentage or February 2013 Offering Investor
Grandfathered Percentage applicable to such Person) or more of the shares of Common Stock of the Company then outstanding (including any such date which is after the date of this Agreement and prior to the issuance of the Rights) (the earliest of
such dates being herein referred to as the “Distribution Date”), (x) the Rights will be evidenced (subject to the provisions of Section 3(b) hereof) by the certificates for the Common Stock of the Company registered in the
names of the holders of the Common Stock of the Company (which certificates for Common Stock of the Company shall be deemed also to be certificates for Rights) and not by separate certificates, and (y) the Rights will be transferable only in
connection with the transfer of the underlying shares of Common Stock of the Company. Upon the Distribution Date, the Company shall send written notice to Rights Agent, and the Rights Agent will, as soon as practicable after receipt of such notice,
at the Company’s expense send, by first-class, insured, postage prepaid mail, to each record holder of the Common Stock of the Company as of the Close of Business on the Distribution Date, at the address of such holder shown on the records of
the Company, one or more certificates, in substantially the form of Exhibit B hereto (the “Right Certificates”), evidencing one Right for each share of Common Stock of the Company so held, subject to adjustment as provided
herein. In the event that an adjustment in the number of Rights per share of Common Stock of the Company has been made pursuant to Section 11(o) hereof, the Company may make the necessary and appropriate rounding adjustments (in accordance with
Section 14(a) hereof) at the time of distribution of the Right Certificates, so that Right Certificates representing only whole numbers of Rights are distributed and cash is paid in lieu of any fractional Rights. As of and after the Close of
Business on the Distribution Date, the Rights will be evidenced solely by such Right Certificates.” 
 5. Except as
expressly set forth herein, this Amendment shall not by implication or otherwise alter, modify, amend or in any way affect any of the terms, conditions, obligations, covenants or agreements contained in the Rights Agreement, all of which are
ratified and affirmed in all respects and shall continue in full force and effect and shall be otherwise unaffected. 

  
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 6. This Amendment shall be governed by and construed in accordance with the laws of the
State of Delaware, United States of America, applicable to contracts made and to be performed entirely within such State, without regard to conflict-of-law principles. 
 7. 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 Amendment transmitted electronically shall have the same authority, effect, and enforceability as an original signature. 
 [The remainder of this page has been intentionally left blank] 

 IN WITNESS WHEREOF, the parties have caused this Amendment to be duly executed as of the day and year first
above written. 
  

							
	Attest:	 		 	PLUG POWER, INC.
				
	 /s/ Gerard L. Conway
	 		 	By:	 	/s/ Andrew Marsh
	Name: Gerard L. Conway	 		 	Name:	 	Andrew Marsh
	Title: General Counsel	 		 	Title:	 	President and Chief Executive Officer

  
  

							
	Attest:	 		 	 BROADRIDGE CORPORATE ISSUER
 SOLUTIONS, INC, as Rights Agent

				
	 /s/ Jennifer Faulkner
	 		 	By:	 	/s/ John P. Dunn
	Name: Jennifer Faulkner	 		 	Name:	 	John P. Dunn
		 		 	Title:	 	Vice President

  
 [Signature Page to Amendment
No. 4 to Shareholder Rights Agreement]

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