Document:

Tax Benefits Preservation Plan, dated as of June 7, 2012

 Exhibit 4.1 
 VONAGE HOLDINGS CORP. 
 and 

AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC 
 as 
 Rights Agent 

Tax Benefits Preservation Plan 
 Dated as of June 7, 2012 

 TABLE OF CONTENTS 

Page 

							
	 Section 1.
	  	 Certain Definitions
	  	 	1	  
			
	 Section 2.
	  	 Appointment of Rights Agent
	  	 	8	  
			
	 Section 3.
	  	 Issue of Rights Certificates
	  	 	8	  
			
	 Section 4.
	  	 Form of Rights Certificates
	  	 	10	  
			
	 Section 5.
	  	 Countersignature and Registration
	  	 	11	  
			
	 Section 6.
	  	 Transfer, Split Up, Combination and Exchange of Rights

Certificates; Mutilated, Destroyed, Lost or Stolen Rights Certificates
	  	 	11	  
			
	 Section 7.
	  	 Exercise of Rights; Purchase Price; Expiration Date of Rights
	  	 	12	  
			
	 Section 8.
	  	 Cancellation and Destruction of Rights Certificates
	  	 	14	  
			
	 Section 9.
	  	 Reservation and Availability of Capital Stock
	  	 	15	  
			
	 Section 10.
	  	 Preferred Stock Record Date
	  	 	16	  
			
	 Section 11.
	  	 Adjustment of Purchase Price, Number and Kind of Shares or Number of Rights
	  	 	17	  
			
	 Section 12.
	  	 Certificate of Adjusted Purchase Price or Number of Shares
	  	 	25	  
			
	 Section 13.
	  	 [Reserved]
	  	 	25	  
			
	 Section 14.
	  	 Fractional Rights and Fractional Shares
	  	 	27	  
			
	 Section 15.
	  	 Rights of Action
	  	 	28	  
			
	 Section 16.
	  	 Agreement of Rights Holders
	  	 	29	  
			
	 Section 17.
	  	 Rights Certificate Holder Not Deemed a Stockholder
	  	 	29	  
			
	 Section 18.
	  	 Concerning the Rights Agent
	  	 	30	  
			
	 Section 19.
	  	 Merger or Consolidation or Change of Name of Rights Agent
	  	 	30	  
			
	 Section 20.
	  	 Duties of Rights Agent
	  	 	31	  
			
	 Section 21.
	  	 Change of Rights Agent
	  	 	33	  
			
	 Section 22.
	  	 Issuance of New Rights Certificates
	  	 	34	  
			
	 Section 23.
	  	 Redemption and Termination
	  	 	34	  
			
	 Section 24.
	  	 Notice of Certain Events
	  	 	35	  
			
	 Section 25.
	  	 Notices
	  	 	36	  
			
	 Section 26.
	  	 Supplements and Amendments
	  	 	37	  
			
	 Section 27.
	  	 Exchange
	  	 	38	  

  
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 TABLE OF CONTENTS 

(continued) 
  

							
	 	  	 	  	Page	 
	 Section 28.
	  	 Successors
	  	 	39	  
			
	 Section 29.
	  	 Determinations and Actions by the Board of Directors, etc.
	  	 	39	  
			
	 Section 30.
	  	 Benefits of this Agreement
	  	 	40	  
			
	 Section 31.
	  	 Severability
	  	 	40	  
			
	 Section 32.
	  	 Governing Law
	  	 	40	  
			
	 Section 33.
	  	 Counterparts
	  	 	41	  
			
	 Section 34.
	  	 Descriptive Headings
	  	 	41	  
			
	 Exhibit A
	  	 Certificate of Designations, Powers, Preferences and Rights of Series A Participating Preferred Stock
	  			
			
	 Exhibit B
	  	 Form of Rights Certificate
	  			
			
	 Exhibit C
	  	 Summary of Rights To Purchase Series A Participating Preferred Stock
	  			

  
 ii 

 TAX BENEFITS PRESERVATION PLAN 

TAX BENEFITS PRESERVATION PLAN, dated as of June 7, 2012 (the “Agreement”), between Vonage Holdings Corp., a Delaware
corporation (the “Company”), and American Stock Transfer & Trust Company, LLC (the “Rights Agent”). 

WITNESSETH: 
 WHEREAS, the Company has generated certain Tax Benefits (as defined in Section 1 hereof); and 
 WHEREAS, the Board of Directors of the Company (a) has determined that the Tax Benefits constitute valuable assets which are likely to inure to the benefit of the Company and its stockholders,
(b) believes it is in the best interests of the Company and its stockholders to avoid an “ownership change” within the meaning of Section 382 of the Internal Revenue Code of 1986, as amended from time to time (the
“Code”) and the Treasury Regulations (as defined in Section 1 hereof) promulgated thereunder, and thereby preserve the ability to fully utilize such Tax Benefits, and (c) desires, in furtherance of such objective, that the
Company enter into this Agreement; and 
 WHEREAS, on June 7, 2012 (the “Rights Dividend Declaration Date”), the
Board of Directors of the Company authorized and declared a dividend of one preferred share purchase right (a “Right”) for each share of common stock, par value $0.001 per share, of the Company (the “Common Stock”) outstanding at
the close of business on June 18, 2012 (the “Record Date”), and has authorized the issuance of one Right (as such number may hereinafter be adjusted pursuant to the provisions of Section 11(p) hereof) for each share of Common
Stock issued between the Record Date (whether originally issued or delivered from the Company’s treasury) and the earlier of the close of business on the Distribution Date (as defined in Section 3 hereof) and the Expiration Date (as
defined in Section 7(a) hereof) (provided that Rights may be issued with respect to shares of Common Stock that become outstanding after the Distribution Date and prior to the Expiration Date in accordance with Section 22 hereof), each
Right initially representing the right to purchase one one-thousandth of a share (a “Unit”) of Series A Participating Preferred Stock (the “Preferred Stock”) of the Company having the rights, powers and preferences set forth in
the form of Certificate of Designations, Powers, Preferences and Rights attached hereto as Exhibit A, upon the terms and subject to the conditions hereinafter set forth. 
 NOW, THEREFORE, in consideration of the premises and the mutual agreements herein set forth, the parties hereby agree as follows: 
 Section 1. Certain Definitions. For purposes of this Agreement, the following terms have the meanings indicated: 

  
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 (a) “Acquiring Person” shall mean any Person (as such term is hereinafter
defined) who or which, together with all Affiliates and Associates (as such terms are hereinafter defined) of such Person, shall be the Beneficial Owner (as such term is hereinafter defined) of four and nine/tenths percent (4.9%) or more of the
shares of Common Stock then outstanding, but shall not include an Exempt Person (as such term is hereinafter defined); provided, however, that: 
 (i) if the Board of Directors determines in good faith that a Person became the Beneficial Owner of a number of shares of Common Stock (including, without limitation, by way of inheritance or bequest)
such that the Person would otherwise qualify as an “Acquiring Person” inadvertently (including, without limitation, because (A) such Person was unaware that it Beneficially Owned a percentage of Common Stock that would otherwise cause
such Person to be an “Acquiring Person” or (B) such Person was aware of the extent of its Beneficial Ownership of Common Stock but had no actual knowledge of the consequences of such Beneficial Ownership under this Agreement), then
such Person shall not be deemed to be or to have become an “Acquiring Person” for any purposes of this Agreement unless and until such Person shall have failed to divest itself, as soon as practicable (as determined, in good faith, by the
Board of Directors), of Beneficial Ownership of a sufficient number of shares of Common Stock so that such Person would no longer otherwise qualify as an “Acquiring Person” (provided that such divestiture may be subject to terms and
conditions satisfactory to the Board of Directors, including, without limitation, the disgorgement of any profit attributable to the Beneficial Ownership of the Common Stock being divested); 

(ii) an Existing Holder (as such term is hereinafter defined) shall not be deemed to be or to become an “Acquiring
Person” unless and until such time as such Existing Holder shall become the Beneficial Owner of any additional shares of Common Stock (other than (A) pursuant to any grant or award of any securities to such holder approved by, or at the
direction of, the Board of Directors or Compensation Committee of the Board of Directors, including through the exercise of options, rights, warrants or similar interests, the conversion of any convertible securities or the vesting of any
restrictions in respect of any securities, (B) pursuant to a dividend or distribution paid or made by the Company on the outstanding Common Stock or pursuant to a split or subdivision of the outstanding Common Stock, or (C) as the result
of contractual obligations that are or purport to be legally binding and entered into by such holder prior to, and not materially amended or modified after, the date of this Agreement); provided, however, that if, following the later of the date
hereof or the date of the first public announcement of the adoption of this Agreement, any Existing Holder Beneficially Owns less than four and nine/tenths percent (4.9%) of the Common Stock then outstanding, such Existing Holder shall
thereafter become an Acquiring Person if such Existing Holder acquires Beneficial Ownership of additional shares of Common Stock such that after such acquisition 

  
 2 

 
it would be the Beneficial Owner of four and nine/tenths percent (4.9%) or more of the Common Stock then outstanding (other than by the beneficial ownership of shares resulting from actions
referenced in sub-clauses (A), (B) or (C) of this clause (ii)); and 
 (iii) no Person shall become an
“Acquiring Person” as the result of an acquisition of shares of Common Stock by the Company which, by reducing the number of shares outstanding, increases the proportionate number of shares of Common Stock beneficially owned by such Person
so that such Person would otherwise become an “Acquiring Person;” provided, however, that if any such Person shall thereafter become the Beneficial Owner of any additional shares of Common Stock (other than beneficial ownership of shares
resulting from actions referenced in sub-clauses (A), (B) or (C) of the preceding clause (ii)), then such Person shall be deemed to be an “Acquiring Person” unless upon becoming the Beneficial Owner of such additional shares of
Common Stock such Person does not beneficially own four and nine/tenths percent (4.9%) or more of the shares of Common Stock then outstanding. 
 (b) “Adjustment Shares” shall have the meaning set forth in Section 11(a)(ii) hereof. 
 (c) “Affiliate” and “Associate” shall have the respective meanings ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under the Securities Exchange
Act of 1934, as amended and in effect on the date of this Agreement (the “Exchange Act”). 
 (d) A Person shall be
deemed the “Beneficial Owner” of, and shall be deemed to “beneficially own,” any securities (and correlative terms shall have the correlative meanings): 

(i) which such Person or any of such Person’s Affiliates or Associates, directly or indirectly, has the right to
acquire (whether such right is exercisable immediately or only after the passage of time or the occurrence of an event) pursuant to any agreement, arrangement or understanding (whether or not in writing) or upon the exercise of conversion rights,
exchange rights, other rights, warrants or options, or otherwise; provided, however, that a Person shall not be deemed the “Beneficial Owner” of, or to “beneficially own,” (A) securities tendered pursuant to a tender or
exchange offer made by or on behalf of such Person or any of such Person’s Affiliates or Associates until such tendered securities are accepted for purchase or exchange, (B) securities issuable upon exercise of Rights at any time prior to
the occurrence of a Triggering Event, (C) securities issuable upon exercise of Rights from and after the occurrence of a Triggering Event, which Rights were acquired by such Person or any of such Person’s Affiliates or Associates prior to
the Distribution Date or pursuant to Section 3(a) or Section 22 hereof (the “Original Rights”) or pursuant to Section 11(i) hereof in connection with an adjustment made with respect to any Original

  
 3 

 
Rights, or (D) securities issued or issuable pursuant to any employee benefit plan of the Company or any Subsidiary of the Company or any employment agreement, arrangement or other
understanding between the Company or any Subsidiary of the Company and any Person or any of such Person’s Affiliates or Associates; or 
 (ii) which such Person or any of such Person’s Affiliates or Associates, directly or indirectly, has the right to vote or dispose of or has “beneficial ownership” of (as determined pursuant
to Rule 13d-3 of the General Rules and Regulations under the Exchange Act), including pursuant to any agreement, arrangement or understanding, whether or not in writing; provided, however, that a Person shall not be deemed the “Beneficial
Owner” of, or to “beneficially own,” any security under this subparagraph (ii) as a result of (A) an agreement, arrangement or understanding to vote such security if such agreement, arrangement or understanding:
(1) arises solely from a revocable proxy or consent given in response to a public proxy or consent solicitation made pursuant to, and in accordance with, the applicable provisions of the General Rules and Regulations under the Exchange Act, and
(2) is not also then reportable by such Person on Schedule 13D or Schedule 13G under the Exchange Act (or any comparable or successor report), or (B) securities issued or issuable pursuant to any employee benefit plan of the Company or any
Subsidiary of the Company or any employment agreement, arrangement or other understanding between the Company or any Subsidiary of the Company and any Person or any of such Person’s Affiliates or Associates; or 

(iii) which are beneficially owned, directly or indirectly, by any other Person (or any Affiliate or Associate thereof)
with which such Person (or any of such Person’s Affiliates or Associates) has any agreement, arrangement or understanding (whether or not in writing), for the purpose of acquiring, holding, voting (except pursuant to a revocable proxy or
consent as described in the proviso to subparagraph (ii) of this paragraph (c)) or disposing of any voting securities of the Company; provided, however, that nothing in this paragraph (c) shall cause (A) a Person engaged in business
as an underwriter of securities to be the “Beneficial Owner” of, or to “beneficially own,” any securities acquired through such Person’s participation in good faith in a firm commitment underwriting until the expiration of
forty (40) days after the date of such acquisition, and then only if such securities continue to be owned by such Person at such expiration of forty (40) days or (B) officers and directors of the Company, solely by reason of their
status as such, shall not constitute a group notwithstanding that they may be Associates of one another or may be deemed to constitute a group for purposes of Section 13(d) the Exchange Act or to be deemed to own securities owned by another
officer or director of the Company. 
 Notwithstanding anything herein to the contrary, a Person shall be deemed
the “Beneficial Owner” of and shall be deemed to “beneficially own” (and correlative terms shall have correlative meanings) securities which (A) such 

  
 4 

 
Person is considered to own under general federal income tax principles; (B) such Person would be deemed to constructively own (including pursuant to the “option” rules in Treasury
Regulation Section 1.382-4) under Section 382 of the Code and the Treasury Regulations thereunder (without regard to any provision that disregards ownership that is reattributed); (C) such Person would be deemed to own together with
any other Persons, as a single “entity” as defined in Section 1.382–3(a)(1) of the Treasury Regulations, or (D) otherwise would be aggregated with securities owned by such Person (other than solely by reason of such
securities being part of the same “public group” as defined in Treasury Regulation Section 1.382-2T(f)(13)) pursuant to Section 382 of the Code and the Treasury Regulations thereunder. 

(e) “Business Day” shall mean any day other than a Saturday, Sunday or a day on which banking institutions in the State
of New York are authorized or obligated by law or executive order to close. 
 (f) “close of business” on any
given date shall mean 5:00 P.M., New York City time, on such date; provided, however, that if such date is not a Business Day it shall mean 5:00 P.M., New York City time, on the next succeeding Business Day. 

(g) “Code” shall have the meaning set forth in the preamble to this Agreement. 

(h) “Common Stock” shall collectively mean the Common Stock of the Company as defined in the third recital hereof and
any other common stock of the Company into or for which it is changed, converted or exchanged. 
 (i) “Common Stock
Equivalents” shall have the meaning set forth in Section 11(a)(iii) hereof. 
 (j) “Current Market
Price” shall have the meaning set forth in Section 11(d)(i) hereof. 
 (k) “Current Value” shall
have the meaning set forth in Section 11(a)(iii) hereof. 
 (l) “Distribution Date” shall have the meaning
set forth in Section 3(a) hereof. 
 (m) “Equivalent Preferred Stock” shall have the meaning set forth in
Section 11(b) hereof. 
 (n) “Excess Exchange Shares” shall have the meaning set forth in Section 27
hereof. 
 (o) “Excess Flip-In Shares” shall have the meaning set forth in Section 11(a)(ii) hereof.

  
 5 

 (p) “Excess Preferred Shares” shall have the meaning set forth in
Section 27(c) hereof. 
 (q) “Excess Shares” shall have the meaning set forth in Section 7(a) hereof.

 (r) “Exchange Ratio” shall have the meaning set forth in Section 27 hereof. 

(s) “Exempt Person” shall mean: (i) the Company; (ii) any Subsidiary of the Company; (iii) any employee
benefit plan or employee stock plan of the Company or any Subsidiary of the Company, or any trust or other entity organized, appointed, established or holding Common Stock for or pursuant to the terms of any such plan; (iv) any Person who is an
“investment advisor” to mutual funds or a trustee of trusts qualified under Section 401(a) of the Code sponsored by unrelated corporations if, immediately after any increase in Beneficial Ownership of Common Stock by such Person,
(A) no single mutual fund or qualified trust advised by such investment advisor or such trustee, respectively, actually owns or beneficially owns pursuant to the last paragraph of the definition of “Beneficial Owner” 4.9% or more of
the shares of Common Stock then outstanding and (B) such investment advisor or trustee Beneficially Owns (other than with respect to such mutual funds or such trusts, as applicable) less than 4.9% of the shares of Common Stock then outstanding;
or (v) any Person who, together with all Affiliates and Associates of such Person, is a Beneficial Owner of 4.9% or more of the shares of Common Stock outstanding and whose beneficial ownership would not, as determined by the Board of Directors
in its sole discretion, be inconsistent with the purpose of this Agreement; provided, however, that if a Person is an Exempt Person solely by reason of clause (v) hereof, then such Person shall cease to be an Exempt Person if (A) such
Person ceases to Beneficially Own 4.9% or more of the shares of the then outstanding Common Stock or (B) the Board of Directors of the Company, in its sole discretion, makes a contrary determination with respect to the effect of such
Person’s Beneficial Ownership (together with all Affiliates and Associates of such Person) with respect to the availability to the Company of its Tax Benefits. 
 A purchaser, assignee or transferee of the shares of Common Stock (or warrants or options exercisable for Common Stock) from an Exempt Person shall not thereby become an Exempt Person. 

(t) “Existing Holder” shall mean any Person who, together with its Affiliates and Associates, immediately prior to the
later of the date hereof or the date of the first public announcement of the adoption of this Agreement, is the Beneficial Owner of four and nine/tenths percent (4.9%) or more of the Common Stock then outstanding. 

(u) “Expiration Date” shall have the meaning set forth in Section 7(a) hereof. 

  
 6 

 (v) “Person” shall mean any individual, firm, corporation, limited
liability company, partnership or other entity. 
 (w) “Preferred Stock” shall mean shares of Series A
Participating Preferred Stock, par value $0.001 per share, of the Company, and, to the extent that there are not a sufficient number of shares of Series A Participating Preferred Stock authorized to permit the full exercise of the Rights, any other
series of Preferred Stock, par value $0.001 per share, of the Company designated for such purpose containing terms substantially similar to the terms of the Series A Participating Preferred Stock. 

(x) “Purchase Price” shall have the meaning set forth in Section 4(a) hereof. 

(y) “Record Date” shall have the meaning set forth in the preamble of this Agreement. 

(z) “Redemption Price” shall have the meaning set forth in Section 23(a) hereof. 

(aa) “Right” shall have the meaning set forth in the preamble of this Agreement. 

(bb) “Rights Agent” shall have the meaning set forth in the preamble of this Agreement. 

(cc) “Rights Certificate” shall have the meaning set forth in Section 3(a) hereof. 

(dd) “Rights Dividend Declaration Date” shall have the meaning set forth in the preamble of this Agreement. 

(ee) “Spread” shall have the meaning set forth in Section 11(a)(iii) hereof. 

(ff) “Stock” shall mean the Preferred Stock and Common Stock. 

(gg) “Stock Acquisition Date” shall mean the first date on which there shall be a public announcement by the Company or
an Acquiring Person that an Acquiring Person has become such (which, for purposes of this definition, shall include, without limitation, a report filed pursuant to Section 13(d) of the Exchange Act) or such earlier date as a majority of the
Board of Directors shall become aware of the existence of an Acquiring Person as confirmed by action of the Board of Directors taken by the affirmative vote of a majority of the Board of Directors. 

(hh) “Subsidiary” shall mean, with reference to any Person, any Person of which a majority of the voting power of voting
equity securities or equity interests is Beneficially Owned, directly or indirectly, by such Person or otherwise controlled by such Person. 

  
 7 

 (ii) “Substitution Period” shall have the meaning set forth in
Section 11(a)(iii) hereof. 
 (jj) “Summary of Rights” shall have the meaning set forth in
Section 3(b) hereof. 
 (kk) “Tax Benefits” shall mean any and all net operating loss carryovers, capital
loss carryovers, general business credit carryovers, alternative minimum tax credit carryovers, foreign tax credit carryovers, any loss or deduction attributable to a “net unrealized built-in loss” within the meaning of Section 382 of
the Code, and the Treasury Regulations promulgated thereunder, of the Company or any of its Subsidiaries, in each case, for U.S. federal income tax purposes. 
 (ll) “Trading Day” shall have the meaning set forth in Section 11(d)(i) hereof. 
 (mm) “Treasury Regulations” shall mean final, temporary and proposed income tax regulations promulgated under the Code, as such regulations are amended from time to time. 

(nn) “Triggering Event” shall mean the occurrence of any Person becoming an Acquiring Person. 

(oo) “Trust” shall have the meaning set forth in Section 27 hereof. 

(pp) “Trust Agreement” shall have the meaning set forth in Section 27 hereof. 

Section 2. Appointment of Rights Agent. The Company hereby appoints the Rights Agent to act as agent for the Company
and the holders of the Rights (who, in accordance with Section 3 hereof, shall prior to the Distribution Date also be the holders of the Common Stock) in accordance with the terms and conditions hereof, and the Rights Agent hereby accepts such
appointment. The Company may from time to time appoint such co-rights agents as it may deem necessary or desirable. 

Section 3. Issue of Rights Certificates. 
 (a) Until the earlier of (i) the close of business on the tenth Business Day after the Stock Acquisition Date (or, if such tenth Business Day after the Stock Acquisition Date occurs before the Record
Date, the close of business on the Record Date), or (ii) the close of business on the tenth Business Day (or such later date as the Board of Directors of the Company shall determine prior to such time as any Person becomes an Acquiring Person)
after the date that a tender or exchange offer by any Person (other than any Exempt Person) is first published or sent or given within the 

  
 8 

 
meaning of Rule 14d-2(a) of the General Rules and Regulations under the Exchange Act, if upon consummation thereof, such Person would become an Acquiring Person (the earlier of (i) and
(ii) being herein referred to as the “Distribution Date”), (x) the Rights will be evidenced (subject to the provisions of paragraph (b) of this Section 3) by the certificates for the Common Stock (or in the case of
uncertificated shares of Common Stock, by the book-entry account that evidences record ownership for such shares) registered in the names of the holders of the Common Stock 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 (including a transfer to the Company). As soon as practicable after the Distribution Date, the Company will prepare and execute, the Rights Agent will
countersign and the Rights Agent will send by first-class, insured, postage prepaid mail, to each record holder of the Common Stock as of the close of business on the Distribution Date (other than the holder of any Rights that have become null and
void pursuant to Section 7(e) hereof), at the address of such holder shown on the records of the Company, one or more rights certificates, substantially in the form of Exhibit B hereto (the “Rights Certificates”), evidencing one Right
for each share of Common Stock so held, subject to adjustment as provided herein. In the event that an adjustment in the number of Rights per share of Common Stock has been made pursuant to Section 11(p) hereof, at the time of distribution of
the Rights Certificates, the Company shall make the necessary and appropriate rounding adjustments (in accordance with Section 14(a) hereof) so that Rights Certificates representing only whole numbers of Rights are distributed and cash is paid
in lieu of any fractional Rights. As of and after the Distribution Date, the Rights will be evidenced solely by such Rights Certificates. 
 (b) As promptly as practicable following the Record Date, the Company or the Rights Agent shall send a copy of a Summary of Rights, in substantially the form attached hereto as Exhibit C (the
“Summary of Rights”), by first-class, postage prepaid mail, to each record holder of the Common Stock as of the close of business on the Record Date, at the address of such holder shown on the records of the Company. With respect to
certificates representing shares of Common Stock outstanding as of the Record Date (or shares registered in book-entry form), or issued subsequent to the Record Date, unless and until the Distribution Date shall occur, the Rights will be evidenced
by the certificates representing such Common Stock (or by an appropriate notification in book-entry form) and the registered holders of the Common Stock shall also be the registered holders of the associated Rights. Until the earliest of the
Distribution Date, the Expiration Date (as such term is defined in Section 7 hereof) or the redemption of the Rights pursuant to Section 23 hereof, the transfer of any certificates representing shares of Common Stock (or the transfer of
shares registered in book-entry form) in respect of which Rights have been issued shall also constitute the transfer of the Rights associated with such shares of Common Stock. 
 (c) Rights shall be issued in respect of all shares of Common Stock which are issued (whether originally issued or from the Company’s treasury) after the Record Date but prior to the earliest of the
Distribution Date, the Expiration Date or the redemption of the Rights pursuant to Section 23 hereof. Certificates representing such shares of Common Stock shall also be deemed to be certificates for Rights, and shall bear the following legend:

  
 9 

 “This certificate also evidences and entitles the holder hereof to certain Rights as
set forth in the Tax Benefits Preservation Plan between Vonage Holdings Corp. (the “Company”) and American Stock Transfer & Trust Company, LLC (the “Rights Agent”), dated as of June 7, 2012, as it may be amended
from time to time (the “Rights Agreement”), the terms of which are hereby incorporated herein by reference and a copy of which is on file at the principal offices of the Rights Agent. Under certain circumstances, as set forth in the Rights
Agreement, such Rights will be evidenced by separate certificates and will no longer be evidenced by this certificate. The Rights Agent will mail to the holder of this certificate a copy of the Rights Agreement, as in effect on the date of mailing,
without charge promptly after receipt of a written request therefor. Under certain circumstances set forth in the Rights Agreement, Rights issued to, or held by, any Person who is, was or becomes an Acquiring Person or any Affiliate or Associate
thereof (as such terms are defined in the Rights Agreement), whether currently held by or on behalf of such Person or by any subsequent holder, may become null and void.” 
 With respect to any book-entry shares of Common Stock, such legend shall be included in a notice to the record holder of such shares in accordance with applicable law. With respect to such certificates
containing the foregoing legend, or any notice of the foregoing legend delivered to holders of book-entry shares, until the earlier of (i) the Distribution Date, (ii) the Expiration Date or (iii) the redemption of Rights pursuant to
Section 23 hereof, the Rights associated with the Common Stock represented by such certificates or registered in book-entry form shall be evidenced by such certificates alone or such registration in book-entry form, and registered holders of
Common Stock shall also be the registered holders of the associated Rights, and the transfer of any of such certificates or book-entry shares shall also constitute the transfer of the Rights associated with the Common Stock represented by such
certificates. In the event that the Company purchases or otherwise acquires any shares of Common Stock after the Record Date but prior to the Distribution Date, any Rights associated with such shares of Common Stock shall be deemed canceled and
retired so that the Company shall not be entitled to exercise any Rights associated with the shares of Common Stock that are no longer outstanding. Notwithstanding this paragraph (c), neither the omission of a legend, nor the failure to provide
notice thereof (whether under this Section 3(c) or Section 4(b)), shall affect the enforceability of any part of this Agreement or the rights of any holder of the Rights. 

Section 4. Form of Rights Certificates. 
 (a) The Rights Certificates (and the forms of election to purchase and of assignment to be printed on the reverse thereof) shall each be substantially in the form set forth in Exhibit B hereto and may
have such marks of identification or designation and such legends, summaries or endorsements printed thereon as the Company may deem appropriate and as are not inconsistent with the provisions of this Agreement, or as may

  
 10 

 
be required to comply with any applicable law or with any rule or regulation made pursuant thereto or with any rule or regulation of any stock exchange on which the Rights may from time to time
be listed, or to conform to usage. Subject to the provisions of Section 11 and Section 22 hereof, the Rights Certificates, whenever distributed, shall be dated as of the Record Date and on their face shall entitle the holders thereof to
purchase such number of one one-thousandth of a share of Preferred Stock as shall be set forth therein at the price set forth therein (such exercise price per one one-thousandth of a share, the “Purchase Price”), but the amount and type of
securities purchasable upon the exercise of each Right and the Purchase Price thereof shall be subject to adjustment as provided herein. 
 (b) Any Rights Certificate issued pursuant to Section 3(a), Section 11(i) or Section 22 hereof that represents Rights Beneficially Owned by: (i) an Acquiring Person or any Associate or
Affiliate of an Acquiring Person, (ii) a transferee of an Acquiring Person (or of any such Associate or Affiliate) who becomes a transferee after the Acquiring Person becomes such, or (iii) a transferee of an Acquiring Person (or of any
such Associate or Affiliate) who becomes a transferee prior to or concurrently with the Acquiring Person becoming such and receives such Rights pursuant to either (A) a transfer (whether or not for consideration) from the Acquiring Person to
holders of equity interests in such Acquiring Person or to any Person with whom such Acquiring Person has any continuing agreement, arrangement or understanding regarding the transferred Rights or (B) a transfer which the Board of Directors of
the Company has determined is part of a plan, arrangement or understanding which has as a primary purpose or effect avoidance of Section 7(e) hereof, and any Rights Certificate issued pursuant to Section 6 or Section 11 hereof upon
transfer, exchange, replacement or adjustment of any other Rights Certificate referred to in this sentence, shall contain (to the extent feasible) the following legend: “The Rights represented by this Rights Certificate are or were beneficially
owned by a Person who was or became an Acquiring Person or an Affiliate or Associate of an Acquiring Person (as such terms are defined in the Rights Agreement). Accordingly, this Rights Certificate and the Rights represented hereby may become null
and void in the circumstances specified in Section 7(e) of such Agreement.” 
 Section 5. Countersignature and
Registration. 
 (a) The Rights Certificates shall be executed on behalf of the Company by its Chairman of the Board, its
Vice Chairman, its Chief Executive Officer, its President or any Vice President, either manually or by facsimile signature, and shall have affixed thereto the Company’s seal or a facsimile thereof which shall be attested by the Secretary or an
Assistant Secretary of the Company, either manually or by facsimile signature. The Rights Certificates shall be countersigned by the Rights Agent, either manually or by facsimile signature, and shall not be valid for any purpose unless so
countersigned. In case any officer of the Company who shall have signed any of the Rights Certificates shall cease to be such officer of the Company before countersignature by the Rights Agent and issuance and delivery by the Company, such Rights
Certificates, nevertheless, may be countersigned by the Rights Agent and issued and delivered by the Company with the same force and effect as though the person who signed such Rights 

  
 11 

 
Certificates had not ceased to be such officer of the Company; and any Rights Certificates may be signed on behalf of the Company by any person who, at the actual date of the execution of such
Rights Certificate, shall be a proper officer of the Company to sign such Rights Certificate, although at the date of the execution of this Rights Agreement any such person was not such an officer. 

(b) Following the Distribution Date, the Rights Agent shall keep, or cause to be kept, at its principal office or offices designated as
the appropriate place for surrender of Rights Certificates upon exercise or transfer, books for registration and transfer of the Rights Certificates issued hereunder. Such books shall show the names and addresses of the respective holders of the
Rights Certificates, the number of Rights evidenced on its face by each of the Rights Certificates and the date of each of the Rights Certificates. 
 Section 6. Transfer, Split Up, Combination and Exchange of Rights Certificates; Mutilated, Destroyed, Lost or Stolen Rights Certificates. 

(a) Subject to the provisions of Section 4(b), Section 7(e), Section 14 and Section 27 hereof, at any time after the
close of business on the Distribution Date, and at or prior to the close of business on the Expiration Date or the redemption of the rights pursuant to Section 23 hereof, any Rights Certificate or Rights Certificates may be transferred, split
up, combined or exchanged for another Rights Certificate or Rights Certificates, entitling the registered holder to purchase a like number of one one-thousandth of a share of Preferred Stock (or, following a Triggering Event, Common Stock, other
securities, cash or other assets, as the case may be) as the Rights Certificate or Rights Certificates surrendered then entitles such holder (or former holder in the case of a transfer) to purchase. Any registered holder desiring to transfer, split
up, combine or exchange any Rights Certificate or Rights Certificates shall make such request in writing delivered to the Rights Agent, and shall surrender the Rights Certificate or Rights Certificates to be transferred, split up, combined or
exchanged at the principal office or offices of the Rights Agent designated for such purpose. Neither the Rights Agent nor the Company shall be obligated to take any action whatsoever with respect to the transfer of any such surrendered Rights
Certificate until the registered holder shall have completed and signed the certificate contained in the form of assignment on the reverse side of such Rights Certificate and shall have provided such additional evidence of the identity of the
Beneficial Owner (or former Beneficial Owner) or Affiliates or Associates thereof as the Company shall reasonably request. Thereupon, the Rights Agent shall, subject to Section 4(b), Section 7(e), Section 14 and Section 27
hereof, countersign and deliver to the Person entitled thereto a Rights Certificate or Rights Certificates, as the case may be, as so requested. The Company may require payment of a sum sufficient to cover any tax or governmental charge that may be
imposed in connection with any transfer, split up, combination or exchange of Rights Certificates. 
 (b) Upon receipt by the
Company and the Rights Agent of evidence reasonably satisfactory to them of the loss, theft, destruction or mutilation of a Rights Certificate, and, in case of loss, theft or destruction, of indemnity or security reasonably

  
 12 

 
satisfactory to them, and reimbursement to the Company and the Rights Agent of all reasonable expenses incidental thereto, and upon surrender to the Rights Agent and cancellation of the Rights
Certificate if mutilated, the Company will execute and deliver a new Rights Certificate of like tenor to the Rights Agent for countersignature and delivery to the registered owner in lieu of the Rights Certificate so lost, stolen, destroyed or
mutilated. 
 Section 7. Exercise of Rights; Purchase Price; Expiration Date of Rights. 

(a) Subject to Section 3(a), Section 7(e) and Section 27 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 executed, 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-thousandth of a share of Preferred Stock as to which such surrendered Rights are then exercisable, at or prior to the earliest of
(i) the time at which the Rights are redeemed as provided in Section 23 hereof, (ii) the time at which all of the Rights (other than Rights that have become void pursuant to the provisions of Section 7(e) hereof) are exchanged
for Common Stock or other assets or securities as provided in Section 27 hereof, (iii) the close of business on the effective date of the repeal of Section 382 of the Code or any successor statute if the Board of Directors of the
Company determines that this Agreement is no longer necessary or desirable for the preservation of Tax Benefits, (iv) the close of business on the first day of a taxable year of the Company to which the Board of Directors of the Company
determines that no Tax Benefits may be carried forward, (v) the close of business on June 7, 2013, provided that, prior to such date, the Board of Directors may determine to extend this Agreement to a date not later than the close of
business on the third anniversary of the date of this Agreement as long as such extension is submitted to the stockholders of the Company for ratification at the 2013 Annual Meeting of Stockholders, or (vi) the close of business on the first
Business Day following the date on which the Inspectors of Election for the Company’s 2013 Annual Meeting of Stockholders certify that the vote on this Agreement at such meeting (with the required vote for such approval to be described in the
Company’s proxy statement relating to such Annual Meeting) reflects that stockholder approval of the Agreement has not been received (the earliest of (i) and (ii) and (iii) and (iv) and (v) and (vi) being herein
referred to as the “Expiration Date”); provided, however, that in connection with any exercise effected pursuant to this Section 7, the Board of Directors may (but shall not be required to) determine that a holder of Rights shall not
be entitled to receive shares of Preferred Stock that would result in such holder, together with such holder’s Affiliates and Associates, becoming the Beneficial Owner of more than 4.9% of the total number of shares of Stock then-outstanding
(treating all shares of Stock as a single class). If a holder would, but for the previous sentence, be entitled to receive a 

  
 13 

 
number of shares that would otherwise result in such holder, together with such holder’s Affiliates and Associates, becoming the Beneficial Owner of in excess of 4.9% of total number of
shares of Stock then-outstanding (such shares, the “Excess Shares”), in lieu of receiving such Excess Shares, such holder will be entitled to receive an amount in (1) cash, (2) debt securities of the Company, (3) other
assets, or (4) any combination of the foregoing, having an aggregate value equal to the Current Market Price per share of the Preferred Stock (as determined pursuant to Section 11(d) hereof) at the close of business on the trading day
following the date of exercise multiplied by the number of Excess Shares that would otherwise have been issuable to such holder. 
 (b) The Purchase Price for each one one-thousandth of a share of Preferred Stock pursuant to the exercise of a Right shall initially be $10.00, and shall be subject to adjustment from time to time as
provided in Sections 11 hereof and shall be payable in accordance with paragraph (c) below. 
 (c) Upon receipt of a Rights
Certificate representing exercisable Rights, with the form of election to purchase and the certificate duly executed, accompanied by payment, with respect to each Right so exercised, of the Purchase Price per one one-thousandth of a share of
Preferred Stock (or other shares, securities, cash or other assets, as the case may be) to be purchased as set forth below and an amount equal to any applicable transfer tax, the Rights Agent shall, subject to Section 20(k) hereof, thereupon
promptly (i) (A) requisition from any transfer agent of the shares of Preferred Stock (or make available, if the Rights Agent is the transfer agent for such shares) certificates for the total number of one one-thousandth of a share of
Preferred Stock to be purchased and the Company hereby irrevocably authorizes its transfer agent to comply with all such requests, or (B) if the Company shall have elected to deposit the total number of shares of Preferred Stock issuable upon
exercise of the Rights hereunder with a depositary agent, requisition from the depositary agent depositary receipts representing such number of one one-thousandth of a share of Preferred Stock as are to be purchased (in which case certificates for
the shares of Preferred Stock represented by such receipts shall be deposited by the transfer agent with the depositary agent) and the Company shall direct the depositary agent to comply with such request, (ii) requisition from the Company the
amount of cash, if any, to be paid in lieu of fractional shares in accordance with Section 14 hereof, (iii) after receipt of such certificates or depositary receipts, cause the same to be delivered to, or upon the order of the registered
holder of such Rights Certificate, registered in such name or names as may be designated by such holder, and (iv) after receipt thereof, deliver such cash, if any, to or upon the order of the registered holder of such Rights Certificate. The
payment of the Purchase Price (as such amount may be reduced pursuant to Section 11(a)(iii) hereof) shall be made in cash or by certified bank check or bank draft payable to the order of the Company. In the event that the Company is obligated
to issue other securities (including Common Stock) of the Company, pay cash and/or distribute a note or other evidence of indebtedness or other property pursuant to Section 11(a) hereof, the Company will make all arrangements necessary so that
such other securities, cash and/or evidences of indebtedness or other property are available for distribution by the Rights Agent, if and when appropriate. The 

  
 14 

 
Company reserves the right to require prior to the occurrence of a Triggering Event that, upon any exercise of Rights, a number of Rights be exercised so that only whole shares of Preferred Stock
would be issued. 
 (d) In case the registered holder of any Rights Certificate shall exercise less than all the Rights
evidenced thereby, a new Rights Certificate evidencing Rights equivalent to the Rights remaining unexercised shall be issued by the Rights Agent and delivered to, or upon the order of, the registered holder of such Rights Certificate, registered in
such name or names as may be designated by such holder, subject to the provisions of Section 14 hereof. 
 (e)
Notwithstanding anything in this Agreement to the contrary, from and after the first occurrence of a Triggering Event, any Rights Beneficially Owned by (i) an Acquiring Person or an Associate or Affiliate of an Acquiring Person, (ii) a
transferee of an Acquiring Person (or of any such Associate or Affiliate) who becomes a transferee after the Acquiring Person becomes such, or (iii) a transferee of an Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee prior to or concurrently with the Acquiring Person becoming such and receives such Rights pursuant to either (A) a transfer (whether or not for consideration) from the Acquiring Person to holders of equity interests in such Acquiring
Person or to any Person with whom the Acquiring Person has any continuing agreement, arrangement or understanding regarding the transferred Rights or (B) a transfer which the Board of Directors of the Company has determined is part of a plan,
arrangement or understanding which has as a primary purpose or effect the avoidance of this Section 7(e), shall become null and void without any further action and no holder of such Rights shall have any rights whatsoever with respect to such
Rights, whether under any provision of this Agreement or otherwise. The Company shall use all reasonable efforts to insure that the provisions of this Section 7(e) and Section 4(b) hereof are complied with, but shall have no liability to
any holder of Rights Certificates or other Person as a result of its failure to make any determinations with respect to an Acquiring Person or any of its Affiliates, Associates or transferees hereunder. 

(f) Notwithstanding anything in this Agreement to the contrary, neither the Rights Agent nor the Company shall be obligated to undertake
any action with respect to a registered holder upon the occurrence of any purported exercise as set forth in this Section 7 unless such registered holder shall have (i) completed and signed the certificate contained in the form of election
to purchase set forth on the reverse side of the Rights Certificate surrendered for such exercise, and (ii) provided such additional evidence of the identity of the Beneficial Owner (or former Beneficial Owner) or Affiliates or Associates
thereof as the Company shall reasonably request. 
 Section 8. Cancellation and Destruction of Rights
Certificates. All Rights Certificates surrendered for the purpose of exercise, transfer, split up, combination or exchange shall, if surrendered to the Company or any of its agents, be delivered to the Rights Agent for cancellation or in
canceled form, or, if surrendered to the Rights Agent, shall be canceled by it, and no Rights Certificates shall be issued in lieu thereof except as 

  
 15 

 
expressly permitted by any of the provisions of this Agreement. The Company shall deliver to the Rights Agent for cancellation and retirement, and the Rights Agent shall so cancel and retire, any
other Rights Certificate purchased or acquired by the Company otherwise than upon the exercise thereof. The Rights Agent shall deliver all canceled Rights Certificates to the Company, or shall, at the written request of the Company, destroy such
canceled Rights Certificates, and in such case shall deliver a certificate of destruction thereof to the Company. 
 Section
9. Reservation and Availability of Capital Stock. 
 (a) The Company covenants and agrees that it will cause to be
reserved and kept available out of its authorized and unissued shares of Preferred Stock (and, following the occurrence of a Triggering Event, out of its authorized and unissued shares of Common Stock and/or other securities or out of its authorized
and issued shares held in its treasury), the number of shares of Preferred Stock (and, following the occurrence of a Triggering Event, Common Stock and/or other securities) that, as provided in this Agreement, including Section 11(a)(iii)
hereof, will be sufficient to permit the exercise in full of all outstanding Rights. 
 (b) So long as the shares of Preferred
Stock (and, following the occurrence of a Triggering Event, Common Stock and/or other securities) issuable and deliverable upon the exercise of the Rights may be listed on any national securities exchange, the Company shall use its best efforts to
cause, from and after such time as the Rights become exercisable, all shares reserved for such issuance to be listed on such exchange upon official notice of issuance upon such exercise. 

(c) The Company shall use its best efforts to (i) file, as soon as practicable following the earliest date after the first
occurrence of a Triggering Event on which the consideration to be delivered by the Company upon exercise of the Rights has been determined in accordance with Section 11(a)(iii) hereof, a registration statement under the Securities Act of 1933
(the “Act”) with respect to the securities purchasable upon exercise of the Rights on an appropriate form, (ii) cause such registration statement to become effective as soon as practicable after such filing, and (iii) cause such
registration statement to remain effective (with a prospectus at all times meeting the requirements of the Act) until the earlier of (A) the date as of which the Rights are no longer exercisable for such securities, and (B) the date of the
expiration of the Rights. The Company will also take such action as may be appropriate under, or to ensure compliance with, the securities or “blue sky” laws of the various states in connection with the exercisability of the Rights. The
Company may temporarily suspend, for a period of time not to exceed ninety (90) days after the date set forth in clause (i) of the first sentence of this Section 9(c), the exercisability of the Rights in order to prepare and file such
registration statement and permit it to become effective. Upon any such suspension, the Company shall issue a public announcement stating that the exercisability of the Rights has been temporarily suspended, as well as a public announcement at such
time as the suspension has been rescinded. In addition, if the Company shall determine that a registration statement is required following the Distribution Date, the Company may 

  
 16 

 
temporarily suspend the exercisability of the Rights until such time as a registration statement has been declared effective. Notwithstanding any provision of this Agreement to the contrary, the
Rights shall not be exercisable in any jurisdiction if the requisite qualification in such jurisdiction shall not have been obtained, the exercise thereof shall not be permitted under applicable law or a registration statement shall not have been
declared effective. 
 (d) The Company covenants and agrees that it will take all such action as may be necessary to ensure that
all one one-thousandth of a share of Preferred Stock (and, following the occurrence of a Triggering Event, Common Stock and/or other securities) delivered upon exercise of Rights shall, at the time of delivery of the certificates for such shares (or
Units) (subject to payment of the Purchase Price), be duly and validly authorized and issued and fully paid and nonassessable. 

(e) The Company further covenants and agrees that it will pay when due and payable any and all federal and state transfer taxes and
charges which may be payable in respect of the issuance or delivery of the Rights Certificates and of any certificates for a number of one one-thousandth of a share of Preferred Stock (or Common Stock and/or other securities, as the case may be)
upon the exercise of Rights. The Company shall not, however, be required (i) to pay any transfer tax which may be payable in respect of any transfer or delivery of Rights Certificates to a Person other than, or the issuance or delivery of a
number of one one-thousandth of a share of Preferred Stock (or Common Stock and/or other securities, as the case may be) in respect of a name other than that of, the registered holder of the Rights Certificates evidencing Rights surrendered for
exercise or (ii) to issue or deliver any certificates for a number of one one-thousandth of a share of Preferred Stock (or Common Stock and/or other securities, as the case may be) in a name other than that of the registered holder upon the
exercise of any Rights until such tax shall have been paid (any such tax being payable by the holder of such Rights Certificate at the time of surrender) or until it has been established to the Company’s satisfaction that no such tax is due.

 Section 10. Preferred Stock Record Date. Each Person in whose name any certificate for a number of one
one-thousandth of a share of Preferred Stock (or Common Stock and/or other securities, as the case may be) is issued upon the exercise of Rights shall for all purposes be deemed to have become the holder of record of such fractional shares of
Preferred Stock (or Common Stock and/or other securities, as the case may be) represented thereby on, and such certificate shall be dated, the date upon which the Rights Certificate evidencing such Rights was duly surrendered and payment of the
Purchase Price (and all applicable transfer taxes) was made; provided, however, that if the date of such surrender and payment is a date upon which the Preferred Stock (or Common Stock and/or other securities, as the case may be) transfer books of
the Company are closed, such Person shall be deemed to have become the record holder of such shares (fractional or otherwise) on, and such certificate shall be dated, the next succeeding Business Day on which the Preferred Stock (or Common Stock
and/or other securities, as the case may be) transfer books of the Company are open. Prior to the exercise of the Rights evidenced thereby, the holder of a Rights Certificate shall not be 

  
 17 

 
entitled to any rights of a stockholder of the Company with respect to shares for which the Rights shall be exercisable, including, without limitation, the right to vote, to receive dividends or
other distributions or to exercise any preemptive rights, and shall not be entitled to receive any notice of any proceedings of the Company, except as provided herein. 
 Section 11. Adjustment of Purchase Price, Number and Kind of Shares or Number of Rights. The Purchase Price, the number and kind of shares covered by each Right and the number of Rights
outstanding are subject to adjustment from time to time as provided in this Section 11. 
 (a)   (i) In the event
the Company shall at any time after the date of this Agreement (A) declare a dividend on the Preferred Stock payable in shares of Preferred Stock, (B) subdivide the outstanding Preferred Stock, (C) combine the outstanding Preferred
Stock into a smaller number of shares, or (D) issue any shares of its capital stock in a reclassification of the Preferred Stock (including any such reclassification in connection with a consolidation or merger in which the Company is the
continuing or surviving corporation), except as otherwise provided in this Section 11(a) and Section 7(e) hereof, the Purchase Price in effect at the time of the record date for such dividend or of the effective date of such subdivision,
combination or reclassification, and the number and kind of shares of Preferred Stock or capital stock, as the case may be, issuable on such date, shall be proportionately adjusted so that the holder of any Right exercised after such time shall be
entitled to receive, upon payment of the Purchase Price then in effect, the aggregate number and kind of shares of Preferred Stock or capital stock, as the case may be, which, if such Right had been exercised immediately prior to such date and at a
time when the Preferred Stock transfer books of the Company were open, such holder would have owned upon such exercise and been entitled to receive by virtue of such dividend, subdivision, combination or reclassification; provided, however, that in
no event shall the consideration to be paid upon the exercise of one Right be less than the aggregate par value of the shares of Preferred Stock or capital stock, as the case may be, issuable upon exercise of one Right. If an event occurs which
would require an adjustment under both this Section 11(a)(i) and Section 11(a)(ii) hereof, the adjustment provided for in this Section 11(a)(i) shall be in addition to, and shall be made prior to, any adjustment required pursuant to
Section 11(a)(ii) hereof. 
 (ii) In the event any Person shall become an Acquiring Person, then, promptly following the
occurrence of such event, proper provision shall be made so that each holder of a Right (except as provided elsewhere in this Agreement including Section 7(e) hereof) shall thereafter have the right to receive, upon exercise thereof at the then
current Purchase Price in accordance with the terms of this Agreement, in lieu of a number of one one-thousandth of a share of Preferred Stock, such number of shares of Common Stock of the Company as shall equal the result obtained by
(x) multiplying the then current Purchase Price by the then number of one one-thousandth of a share of Preferred Stock for which a Right was exercisable immediately prior to the first occurrence of a Triggering Event, and (y) dividing that
product (which, following such first occurrence, shall thereafter be referred to as the “Purchase Price” for each Right and 

  
 18 

 
for all purposes of this Agreement) by 50% of the Current Market Price per share of Common Stock (determined pursuant to Section 11(d) hereof) on the date of such first occurrence (such
number of shares, the “Adjustment Shares”); provided, however, that in connection with any exercise effected pursuant to this Section 11(a)(ii), the Board of Directors may (but shall not be required to) determine that a holder of
Rights shall not be entitled to receive shares of Common Stock that would result in such holder, together with such holder’s Affiliates and Associates, becoming the Beneficial Owner of more than 4.9% of the total number of shares of Stock
then-outstanding (treating all shares of Stock as a single class). If a holder would, but for the previous sentence, be entitled to receive a number of shares that would otherwise result in such holder, together with such holder’s Affiliates
and Associates, becoming the Beneficial Owner of in excess of 4.9% of the total number of shares of Stock then-outstanding (such shares, the “Excess Flip-In Shares”), in lieu of receiving such Excess Flip-In Shares, such holder will be
entitled to receive an amount in (1) cash, (2) debt securities of the Company, (3) other assets, or (4) any combination of the foregoing, having an aggregate value equal to the Current Market Price per share of the Common Stock
on the date of the occurrence of a Triggering Event multiplied by the number of Excess Flip-In Shares that would otherwise have been issuable to such holder. 
 (iii) In the event that the number of shares of Common Stock which are authorized by the Company’s Restated Certificate of Incorporation but not outstanding, subscribed for or reserved for issuance
for purposes other than upon exercise of the Rights are not sufficient to permit the exercise in full of the Rights in accordance with the foregoing subparagraph (ii) of this Section 11(a), the Company shall (A) determine the value of
the Adjustment Shares issuable upon the exercise of a Right (the “Current Value”), and (B) with respect to each Right, make adequate provision to substitute for the Adjustment Shares, upon the exercise of a Right and payment of the
applicable Purchase Price, (1) cash, (2) a reduction in the Purchase Price, (3) Common Stock or other equity securities of the Company (including, without limitation, shares, or units of shares, of preferred stock, such as the
Preferred Stock, which the Board of Directors of the Company has deemed to have essentially the same value or economic rights as shares of Common Stock (such shares of preferred stock being referred to as “Common Stock Equivalents”)),
(4) debt securities of the Company, (5) other assets, or (6) any combination of the foregoing, having an aggregate value equal to the Current Value (less the amount of any reduction in the Purchase Price), where such aggregate value
has been determined by the Board of Directors based upon the advice of a nationally recognized investment banking firm selected by the Board of Directors; provided, however, that the Board of Directors may (but shall not be required to) determine
that a holder of Rights shall not be entitled to receive equity securities under this subparagraph (iii) to the extent the Company determines the receipt thereof could limit the Company’s ability to utilize the Tax Benefits; and provided,
further, that if the Company shall not have made adequate provision to deliver value pursuant to clause (B) above within thirty (30) days following the first occurrence of a Triggering Event, then the Company shall be obligated to deliver,
upon the surrender for exercise of a Right and without requiring payment of the Purchase Price, shares of Common Stock (to the extent 

  
 19 

 
available) and then, if necessary, cash, debt securities, other assets, or any combination of the foregoing which has an aggregate value equal to the Spread. For purposes of the preceding
sentence, the term “Spread” shall mean the excess of (i) the Current Value over (ii) the Purchase Price. If the Board of Directors of the Company determines in good faith that it is likely that sufficient additional shares of
Common Stock could be authorized for issuance upon exercise in full of the Rights, the thirty (30) day period set forth above may be extended to the extent necessary, but not more than ninety (90) days after the first occurrence of a
Triggering Event, in order that the Company may seek stockholder approval for the authorization of such additional shares (such thirty (30) day period, as it may be extended, is herein called the “Substitution Period”). To the extent
that the Company determines that action should be taken pursuant to the first and/or third sentences of this Section 11(a)(iii), the Company (1) shall provide, subject to Section 7(e) hereof, that such action shall apply uniformly to
all outstanding Rights, and (2) may suspend the exercisability of the Rights until the expiration of the Substitution Period in order to seek such stockholder approval for such authorization of additional shares and/or to decide the appropriate
form of distribution to be made pursuant to such first sentence and to determine the value thereof. In the event of any such suspension, the Company shall issue a public announcement stating that the exercisability of the Rights has been temporarily
suspended, as well as a public announcement at such time as the suspension is no longer in effect. For purposes of this Section 11(a)(iii), the value of each Adjustment Share shall be the Current Market Price per share of the Common Stock on
the date of the occurrence of a Triggering Event and the per share or per unit value of any Common Stock Equivalent shall be deemed to equal the Current Market Price per share of the Common Stock on such date. 

(b) In case the Company shall fix a record date for the issuance of rights, options or warrants to all holders of Preferred Stock
entitling them to subscribe for or purchase (for a period expiring within forty-five (45) calendar days after such record date) Preferred Stock (or shares having the same rights, privileges and preferences as the shares of Preferred Stock
(“Equivalent Preferred Stock”)) or securities convertible into Preferred Stock or Equivalent Preferred Stock at a price per share of Preferred Stock or per share of Equivalent Preferred Stock (or having a conversion price per share, if a
security convertible into Preferred Stock or Equivalent Preferred Stock) less than the Current Market Price (as determined pursuant to Section 11(d) hereof) per share of Preferred Stock on such record date, the Purchase Price to be in effect
after such record date shall be determined by multiplying the Purchase Price in effect immediately prior to such record date by a fraction, the numerator of which shall be the number of shares of Preferred Stock outstanding on such record date, plus
the number of shares of Preferred Stock which the aggregate offering price of the total number of shares of Preferred Stock and/or Equivalent Preferred Stock so to be offered (and/or the aggregate initial conversion price of the convertible
securities so to be offered) would purchase at such Current Market Price, and the denominator of which shall be the number of shares of Preferred Stock outstanding on such record date, plus the number of additional shares of Preferred Stock and/or
Equivalent Preferred Stock to be offered for subscription or purchase (or into which the convertible securities so to be offered are initially 

  
 20 

 
convertible); provided, however, that in no event shall the consideration to be paid upon the exercise of one Right be less than the aggregate par value of the shares of Preferred Stock or
capital stock, as the case may be, issuable upon exercise of one Right. In case such subscription price may be paid by delivery of consideration part or all of which may be in a form other than cash, the value of such consideration shall be as
determined in good faith by the Board of Directors of the Company, whose determination shall be described in a statement filed with the Rights Agent and shall be binding on the Rights Agent and the holders of the Rights. Shares of Preferred Stock
owned by or held for the account of the Company shall not be deemed outstanding for the purpose of any such computation. Such adjustment shall be made successively whenever such a record date is fixed, and in the event that such rights or warrants
are not so issued, the Purchase Price shall be adjusted to be the Purchase Price which would then be in effect if such record date had not been fixed. 
 (c) In case the Company shall fix a record date for a distribution to all holders of Preferred Stock (including any such distribution made in connection with a consolidation or merger in which the Company
is the continuing corporation) cash (other than a regular quarterly cash dividend out of the earnings or retained earnings of the Company), assets (other than a dividend payable in Preferred Stock, but including any dividend payable in stock other
than Preferred Stock) or evidences of indebtedness, or of subscription rights or warrants (excluding those referred to in Section 11(b) hereof), the Purchase Price to be in effect after such record date shall be determined by multiplying the
Purchase Price in effect immediately prior to such record date by a fraction, the numerator of which shall be the Current Market Price (as determined pursuant to Section 11(d) hereof) per share of Preferred Stock on such record date, less the
fair market value (as determined in good faith by the Board of Directors of the Company, whose determination shall be described in a statement filed with the Rights Agent) of the portion of the cash, assets or evidences of indebtedness so to be
distributed or of such subscription rights or warrants applicable to a share of Preferred Stock and the denominator of which shall be such Current Market Price (as determined pursuant to Section 11(d) hereof) per share of Preferred Stock;
provided, however, that in no event shall the consideration to be paid upon the exercise of one Right be less than the aggregate par value of the shares of Preferred Stock or capital stock, as the case may be, issuable upon exercise of one Right.
Such adjustments shall be made successively whenever such a record date is fixed, and in the event that such distribution is not so made, the Purchase Price shall be adjusted to be the Purchase Price which would have been in effect if such record
date had not been fixed. 
 (d)   (i) For the purpose of any computation hereunder, other than computations made
pursuant to Section 11(a)(iii) hereof, the Current Market Price per share of Common Stock on any date shall be deemed to be the average of the daily closing prices per share of such Common Stock for the thirty (30) consecutive Trading Days
immediately prior to such date, and for purposes of computations made pursuant to Section 11(a)(iii) hereof, the Current Market Price per share of Common Stock on any date shall be deemed to be the average of the daily closing prices per share
of such 

  
 21 

 
Common Stock for the ten (10) consecutive Trading Days immediately following such date; provided, however, that in the event that the Current Market Price per share of the Common Stock is
determined during a period following the announcement by the issuer of such Common Stock of (A) a dividend or distribution on such Common Stock payable in shares of such Common Stock or securities convertible into shares of such Common Stock
(other than the Rights), or (B) any subdivision, combination or reclassification of such Common Stock, and the ex-dividend date for such dividend or distribution, or the record date for such subdivision, combination or reclassification shall
not have occurred prior to the commencement of the requisite thirty (30) Trading Day or ten (10) Trading Day period, as set forth above, then, and in each such case, the Current Market Price shall be properly adjusted to take into account
ex-dividend trading. The closing price for each day shall be the last sale price, regular way, or, in case no such sale takes place on such day, the average of the closing bid and asked prices, regular way, in either case as reported in the
principal consolidated transaction reporting system with respect to securities listed or admitted to trading on the New York Stock Exchange or, if the shares of Common Stock are not listed or admitted to trading on the New York Stock Exchange, as
reported in the principal consolidated transaction reporting system with respect to securities listed on the principal national securities exchange on which the shares of Common Stock are listed or admitted to trading or, if the shares of Common
Stock are not listed or admitted to trading on any national securities exchange, the last quoted price or, if not so quoted, the average of the high bid and low asked prices in the over-the-counter market, as reported by the National Association of
Securities Dealers Automated Quotation System (“NASDAQ”) or such other system then in use, or, if on any such date the shares of Common Stock are not quoted by any such organization, the average of the closing bid and asked prices as
furnished by a professional market maker making a market in the Common Stock selected by the Board of Directors of the Company. If on any such date no market maker is making a market in the Common Stock, the fair value of such shares on such date as
determined in good faith by the Board of Directors shall be used. The term “Trading Day” shall mean a day on which the principal national securities exchange on which the shares of Common Stock are listed or admitted to trading is open for
the transaction of business or, if the shares of Common Stock are not listed or admitted to trading on any national securities exchange, a Business Day. If the Common Stock is not publicly held or not so listed or traded, Current Market Price per
share shall mean the fair value per share as determined in good faith by the Board of Directors, whose determination shall be described in a statement filed with the Rights Agent and shall be conclusive for all purposes. 

(ii) For the purpose of any computation hereunder, the Current Market Price per share of Preferred Stock shall be determined in the same
manner as set forth above for the Common Stock in clause (i) of this Section 11(d) (other than the last sentence thereof). If the Current Market Price per share of Preferred Stock cannot be determined in the manner provided above or if the
Preferred Stock is not publicly held or listed or traded in a manner described in clause (i) of this Section 11(d), the Current Market Price per share of Preferred Stock shall be conclusively deemed to be an amount equal to inverse of one
one-thousandth (as such number may be appropriately adjusted 

  
 22 

 
for such events as stock splits, stock dividends and recapitalizations with respect to the Common Stock occurring after the date of this Agreement) multiplied by the Current Market Price per
share of the Common Stock. If neither the Common Stock nor the Preferred Stock is publicly held or so listed or traded, Current Market Price per share of the Preferred Stock shall mean the fair value per share as determined in good faith by the
Board of Directors of the Company, whose determination shall be described in a statement filed with the Rights Agent and shall be conclusive for all purposes. For all purposes of this Agreement, the Current Market Price of a Unit shall be equal to
the Current Market Price of one share of Preferred Stock divided by 1000. 
 (e) Anything herein to the contrary
notwithstanding, no adjustment in the Purchase Price shall be required unless such adjustment would require an increase or decrease of at least 1% in the Purchase Price; provided, however, that any adjustments which by reason of this
Section 11(e) are not required to be made shall be carried forward and taken into account in any subsequent adjustment. All calculations under this Section 11 shall be made to the nearest cent or to the nearest share of Common Stock or
other share of capital stock or one one-thousandth of a share of Preferred Stock, as the case may be. 
 (f) If as a result of
an adjustment made pursuant to Section 11(a)(ii), the holder of any Right thereafter exercised shall become entitled to receive any shares of capital stock other than Preferred Stock, thereafter the number of such other shares so receivable
upon exercise of any Right and the Purchase Price thereof shall be subject to adjustment from time to time in a manner and on terms as nearly equivalent as practicable to the provisions with respect to the Preferred Stock contained in Sections
11(a), (b), (c), (e), (g), (h), (i), (j), (k) and (m), and the provisions of Sections 7, 9, 10 and 14 hereof with respect to the Preferred Stock shall apply on like terms to any such other shares. 

(g) All Rights originally issued by the Company subsequent to any adjustment made to the Purchase Price hereunder shall evidence the
right to purchase, at the adjusted Purchase Price, the number of one one-thousandth of a share of Preferred Stock purchasable from time to time hereunder upon exercise of the Rights, all subject to further adjustment as provided herein. 

(h) Unless the Company shall have exercised its election as provided in Section 11(i), upon each adjustment of the Purchase Price as
a result of the calculations made in Sections 11(b) and (c), each Right outstanding immediately prior to the making of such adjustment shall thereafter evidence the right to purchase, at the adjusted Purchase Price, that number of one one-thousandth
of a share of Preferred Stock (calculated to the nearest one one-thousandth of a share of Preferred Stock) obtained by: (i) multiplying (x) the number of one one-thousandth of a share covered by a Right immediately prior to this
adjustment, by (y) the Purchase Price in effect immediately prior to such adjustment of the Purchase Price, and (ii) dividing the product so obtained by the Purchase Price in effect immediately after such adjustment of the Purchase Price.

  
 23 

 (i) The Company may elect on or after the date of any adjustment of the Purchase Price to
adjust the number of Rights, in lieu of any adjustment in the number of one one-thousandth of a share of Preferred Stock purchasable upon the exercise of a Right. Each of the Rights outstanding after the adjustment in the number of Rights shall be
exercisable for the number of one one-thousandth of a share of Preferred Stock for which a Right was exercisable immediately prior to such adjustment. Each Right held of record prior to such adjustment of the number of Rights shall become that
number of Rights (calculated to the nearest one one-thousandth) obtained by dividing the Purchase Price in effect immediately prior to adjustment of the Purchase Price by the Purchase Price in effect immediately after adjustment of the Purchase
Price. The Company shall make a public announcement of its election to adjust the number of Rights, indicating the record date for the adjustment, and, if known at the time, the amount of the adjustment to be made. This record date may be the date
on which the Purchase Price is adjusted or any day thereafter, but, if the Rights Certificates have been issued, shall be at least ten (10) days later than the date of the public announcement. If Rights Certificates have been issued, upon each
adjustment of the number of Rights pursuant to this Section 11(i), the Company shall, as promptly as practicable, cause to be distributed to holders of record of Rights Certificates on such record date Rights Certificates evidencing, subject to
Section 14 hereof, the additional Rights to which such holders shall be entitled as a result of such adjustment, or, at the option of the Company, shall cause to be distributed to such holders of record in substitution and replacement for the
Rights Certificates held by such holders prior to the date of adjustment, and upon surrender thereof, if required by the Company, new Rights Certificates evidencing all the Rights to which such holders shall be entitled after such adjustment. Rights
Certificates so to be distributed shall be issued, executed and countersigned in the manner provided for herein (and may bear, at the option of the Company, the adjusted Purchase Price) and shall be registered in the names of the holders of record
of Rights Certificates on the record date specified in the public announcement. 
 (j) Irrespective of any adjustment or change
in the Purchase Price or the number of one one-thousandth of a share of Preferred Stock issuable upon the exercise of the Rights, the Rights Certificates theretofore and thereafter issued may continue to express the Purchase Price per one
one-thousandth of a share and the number of one one-thousandth of a share which were expressed in the initial Rights Certificates issued hereunder. 
 (k) Before taking any action that would cause an adjustment reducing the Purchase Price below the then par value, if any, of the number of one one-thousandth of a share of Preferred Stock issuable upon
exercise of the Rights, the Company shall take any corporate action which may, in the opinion of its counsel, be necessary in order that the Company may validly and legally issue fully paid and nonassessable such number of one one-thousandth of a
share of Preferred Stock at such adjusted Purchase Price. 
 (l) In any case in which this Section 11 shall require that an
adjustment in the Purchase Price be made effective as of a record date for a specified 

  
 24 

 
event, the Company may elect to defer until the occurrence of such event the issuance to the holder of any Right exercised after such record date the number of one one-thousandth of a share of
Preferred Stock and other capital stock or securities of the Company, if any, issuable upon such exercise over and above the number of one one-thousandth of a share of Preferred Stock and other capital stock or securities of the Company, if any,
issuable upon such exercise on the basis of the Purchase Price in effect prior to such adjustment; provided, however, that the Company shall deliver to such holder a due bill or other appropriate instrument evidencing such holder’s right to
receive such additional shares (fractional or otherwise) or securities upon the occurrence of the event requiring such adjustment. 
 (m) Anything in this Section 11 to the contrary notwithstanding, the Company shall be entitled to make such reductions in the Purchase Price, in addition to those adjustments expressly required by
this Section 11, as and to the extent that in their good faith judgment the Board of Directors of the Company shall determine to be advisable in order that any (i) consolidation or subdivision of the Preferred Stock, (ii) issuance
wholly for cash of any shares of Preferred Stock at less than the Current Market Price, (iii) issuance wholly for cash of shares of Preferred Stock or securities which by their terms are convertible into or exchangeable for shares of Preferred
Stock, (iv) stock dividends or (v) issuance of rights, options or warrants referred to in this Section 11, hereafter made by the Company to holders of its Preferred Stock shall not be taxable to such stockholders. 

(n) The Company covenants and agrees that it shall not, at any time after the Distribution Date, (i) consolidate with any other
Person (other than a Subsidiary of the Company in a transaction which complies with Section 11(o) hereof), (ii) merge with or into any other Person (other than a Subsidiary of the Company in a transaction which complies with
Section 11(o) hereof), or (iii) sell or transfer (or permit any Subsidiary to sell or transfer), in one transaction, or a series of related transactions, assets, cash flow or earning power aggregating more than 50% of the assets or earning
power of the Company and its Subsidiaries (taken as a whole) to any other Person or Persons (other than the Company and/or any of its Subsidiaries in one or more transactions each of which complies with Section 11(o) hereof), if at the time of
or immediately after such consolidation, merger or sale there are any rights, warrants or other instruments or securities outstanding or agreements in effect which would substantially diminish or otherwise eliminate the benefits intended to be
afforded by the Rights. 
 (o) The Company covenants and agrees that, after the Distribution Date, it will not, except as
permitted by Section 23 or Section 26 hereof, take (or permit any Subsidiary to take) any action if at the time such action is taken it is reasonably foreseeable that such action will diminish substantially or otherwise eliminate the
benefits intended to be afforded by the Rights. 
 (p) Anything in this Agreement to the contrary notwithstanding, in the event
that the Company shall at anytime after the Rights Dividend Declaration Date and prior to the Distribution Date (i) declare a dividend on the outstanding shares of Common 

  
 25 

 
Stock payable in shares of Common Stock, (ii) subdivide the outstanding shares of Common Stock, or (iii) combine or consolidate the outstanding shares of Common Stock into a smaller
number of shares, the number of Rights associated with each share of Common Stock then outstanding, or issued or delivered thereafter but prior to the Distribution Date, shall be proportionately adjusted so that the number of Rights thereafter
associated with each share of Common Stock following any such event shall equal the result obtained by multiplying the number of Rights associated with each share of Common Stock immediately prior to such event by a fraction the numerator which
shall be the total number of shares of Common Stock outstanding immediately prior to the occurrence of the event and the denominator of which shall be the total number of shares of Common Stock outstanding immediately following the occurrence of
such event. 
 Section 12. Certificate of Adjusted Purchase Price or Number of Shares. Whenever an
adjustment is made as provided in Section 11 hereof, the Company shall (a) promptly prepare a certificate setting forth such adjustment and a brief statement of the facts accounting for such adjustment, (b) promptly file with the
Rights Agent, and with each transfer agent for the Preferred Stock and the Common Stock, a copy of such certificate, and (c) mail a brief summary thereof to each holder of a Rights Certificate (or, if prior to the Distribution Date, to each
holder of a certificate representing shares of Common Stock) in accordance with Section 25 hereof. The Rights Agent shall be fully protected in relying on any such certificate and on any adjustment therein contained. 

Section 13. [Reserved]. 
 Section 14. Fractional Rights and Fractional Shares. 
 (a)
The Company shall not be required to issue fractions of Rights, except prior to the Distribution Date as provided in Section 11(p) hereof, or to distribute Rights Certificates which evidence fractional Rights. In lieu of such fractional Rights,
there shall be paid to the registered holders of the Rights Certificates with regard to which such fractional Rights would otherwise be issuable, an amount in cash equal to the same fraction of the current market value of a whole Right. For purposes
of this Section 14(a), the current market value of a whole Right shall be the closing price of the Rights for the Trading Day immediately prior to the date on which such fractional Rights would have been otherwise issuable. The closing price of
the Rights for any day shall be the last sale price, regular way, or, in case no such sale takes place on such day, the average of the closing bid and asked prices, regular way, in either case as reported in the principal consolidated transaction
reporting system with respect to securities listed or admitted to trading on the New York Stock Exchange or, if the Rights are not listed or admitted to trading on the New York Stock Exchange, as reported in the principal consolidated transaction
reporting system with respect to securities listed on the principal national securities exchange on which the Rights are listed or admitted to trading, or if the Rights are not listed or admitted to trading on any national securities exchange, the
last quoted price or, if not so quoted, the average of the high bid and low asked prices in the over-the-counter market, as reported by NASDAQ or such system then in use or, if on any 

  
 26 

 
such date the Rights are not quoted by any such organization, the average of the closing bid and asked prices as furnished by a professional market maker making a market in the Rights selected by
the Board of Directors of the Company. If on any such date no such market maker is making a market in the Rights the fair value of the Rights on such date as determined in good faith by the Board of Directors of the Company shall be used.

 (b) The Company shall not be required to issue fractions of shares of Preferred Stock (other than fractions which are
integral multiples of one one-thousandth of a share of Preferred Stock) upon exercise of the Rights or to distribute certificates which evidence fractional shares of Preferred Stock (other than fractions which are integral multiples of one
one-thousandth of a share of Preferred Stock). In lieu of fractional shares of Preferred Stock that are not integral multiples of one one-thousandth of a share of Preferred Stock, the Company may pay to the registered holders of Rights Certificates
at the time such Rights are exercised as herein provided an amount in cash equal to the same fraction of the current market value of one one-thousandth of a share of Preferred Stock. For purposes of this Section 14(b), the current market value
of one one-thousandth of a share of Preferred Stock shall be one one-thousandth of the closing price of a share of Preferred Stock (as determined pursuant to Section 11(d)(ii) hereof) for the Trading Day immediately prior to the date of such
exercise. 
 (c) Following the occurrence of a Triggering Event, the Company shall not be required to issue fractions of shares
of Common Stock upon exercise of the Rights or to distribute certificates which evidence fractional shares of Common Stock. In lieu of fractional shares of Common Stock, the Company may pay to the registered holders of Rights Certificates at the
time such Rights are exercised as herein provided an amount in cash equal to the same fraction of the current market value of one (1) share of Common Stock. For purposes of this Section 14(c), the current market value of one (1) share
of Common Stock shall be the closing price of one (1) share of Common Stock (as determined pursuant to Section 11(d)(i) hereof) for the Trading Day immediately prior to the date of such exercise. 

(d) The holder of a Right by the acceptance of the Rights expressly waives his or her right to receive any fractional Rights or any
fractional shares upon exercise of a Right, except as permitted by this Section 14. 
 Section 15. Rights of
Action. All rights of action in respect of this Agreement, except the rights of action that are given to the Rights Agent under Section 18 hereof, are vested in the respective registered holders of the Rights Certificates (and, prior to
the Distribution Date, the registered holders of the Common Stock); and any registered holder of any Rights Certificate (or, prior to the Distribution Date, of the Common Stock), without the consent of the Rights Agent or of the holder of any other
Rights Certificate (or, prior to the Distribution Date, of the Common Stock), may, in such holder’s own behalf and for such holder’s own benefit, enforce, and may institute and maintain any suit, action or proceeding against the Company to
enforce, or otherwise act in respect of, such holder’s right to exercise the Rights evidenced by such Rights Certificate in the manner provided in such Rights Certificate and in this Agreement.

  
 27 

 
Without limiting the foregoing or any remedies available to the holders of Rights, it is specifically acknowledged that the holders of Rights would not have an adequate remedy at law for any
breach of this Agreement and shall be entitled to specific performance of the obligations hereunder and injunctive relief against actual or threatened violations of the obligations hereunder of any Person subject to this Agreement. 

Section 16. Agreement of Rights Holders. Every holder of a Right by accepting the same consents and agrees with the
Company and the Rights Agent and with every other holder of a Right that: 
 (a) prior to the Distribution Date, the Rights will
be transferable only in connection with the transfer of Common Stock; 
 (b) after the Distribution Date, the Rights
Certificates are transferable only on the registry books of the Rights Agent if surrendered at the principal office or offices of the Rights Agent designated for such purposes, duly endorsed or accompanied by a proper instrument of transfer and with
the appropriate forms and certificates fully executed; 
 (c) subject to Section 6(a) and Section 7(f) hereof, the
Company and the Rights Agent may deem and treat the Person in whose name a Rights Certificate (or, prior to the Distribution Date, the associated Common Stock certificate) is registered as the absolute owner thereof and of the Rights evidenced
thereby (notwithstanding any notations of ownership or writing on the Rights Certificates or the associated Common Stock certificate made by anyone other than the Company or the Rights Agent) for all purposes whatsoever, and neither the Company nor
the Rights Agent, subject to the last sentence of Section 7(e) hereof, shall be required to be affected by any notice to the contrary; and 
 (d) notwithstanding anything in this Agreement to the contrary, neither the Company nor the Rights Agent shall have any liability to any holder of a Right or other Person as a result of its inability to
perform any of its obligations under this Agreement by reason of any preliminary or permanent injunction or other order, decree or ruling issued by a court of competent jurisdiction or by a governmental, regulatory or administrative agency or
commission, or any statute, rule, regulation or executive order promulgated or enacted by any governmental authority, prohibiting or otherwise restraining performance of such obligation; provided, however, the Company must use its best efforts to
have any such order, decree or ruling lifted or otherwise overturned as soon as possible. 
 Section 17. Rights
Certificate Holder Not Deemed a Stockholder. No holder, as such, of any Rights Certificate shall be entitled to vote, receive dividends or be deemed for any purpose the holder of the number of one one-thousandth of a share of Preferred Stock
or any other securities of the Company which may at any time be issuable on the exercise of the Rights represented thereby, nor shall anything contained herein or in any Rights Certificate be construed to confer upon the holder of any Rights

  
 28 

 
Certificate, as such, any of the rights of a stockholder of the Company or any right to vote for the election of directors or upon any matter submitted to stockholders at any meeting thereof, or
to give or withhold consent to any corporate action, or to receive notice of meetings or other actions affecting stockholders (except as provided in Section 24 hereof), or to receive dividends or subscription rights, or otherwise, until the
Right or Rights evidenced by such Rights Certificate shall have been exercised in accordance with the provisions hereof. 

Section 18. Concerning the Rights Agent. 
 (a) The Company agrees to pay to the Rights Agent reasonable compensation for all services rendered by it hereunder and, from time to time, on demand of the Rights Agent, its reasonable expenses and
counsel fees and disbursements and other disbursements incurred in the administration and execution of this Agreement and the exercise and performance of its duties hereunder. The Company also agrees to indemnify the Rights Agent for, and to hold it
harmless against, any loss, liability, or expense, incurred without gross negligence, bad faith or willful misconduct on the part of the Rights Agent, for anything done or omitted by the Rights Agent in connection with the acceptance and
administration of this Agreement, including the costs and expenses of defending against any claim of liability in the premises. In no case shall the Rights Agent be liable for special, indirect, incidental or consequential loss or damage.

 (b) The Rights Agent shall be protected and shall incur no liability for or in respect of any action taken, suffered or
omitted by it in connection with its administration of this Agreement in reliance upon any Rights Certificate or certificate for Common Stock or for other securities of the Company, instrument of assignment or transfer, power of attorney,
endorsement, affidavit, letter, notice, direction, consent, certificate, statement, or other paper or document believed by it to be genuine and to be signed, executed and, where necessary, verified or acknowledged, by the proper Person or Persons.

 Section 19. Merger or Consolidation or Change of Name of Rights Agent. 

(a) Any corporation into which the Rights Agent or any successor Rights Agent may be merged, converted or with which it may be
consolidated, or any corporation resulting from any merger, conversion or consolidation to which the Rights Agent or any successor Rights Agent shall be a party, or any corporation succeeding to the corporate trust, stock transfer or other
shareholder services business of the Rights Agent or any successor Rights Agent, shall be the successor to the Rights Agent under this Agreement without the execution or filing of any paper or any further act on the part of any of the parties
hereto; but only if such corporation would be eligible for appointment as a successor Rights Agent under the provisions of Section 21 hereof. In case at the time such successor Rights Agent shall succeed to the agency created by this Agreement,
any of the Rights Certificates shall have been countersigned but not delivered, any such successor Rights Agent may adopt the countersignature of a 

  
 29 

 
predecessor Rights Agent and deliver such Rights Certificates so countersigned; and in case at that time any of the Rights Certificates shall not have been countersigned, any successor Rights
Agent may countersign such Rights Certificates either in the name of the predecessor or in the name of the successor Rights Agent; and in all such cases such Rights Certificates shall have the full force provided in the Rights Certificates and in
this Agreement. 
 (b) In case at any time the name of the Rights Agent shall be changed and at such time any of the Rights
Certificates shall have been countersigned but not delivered, the Rights Agent may adopt the countersignature under its prior name and deliver Rights Certificates so countersigned; and in case at that time any of the Rights Certificates shall not
have been countersigned, the Rights Agent may countersign such Rights Certificates either in its prior name or in its changed name; and in all such cases such Rights Certificates shall have the full force provided in the Rights Certificates and in
this Agreement. 
 Section 20. Duties of Rights Agent. The Rights Agent undertakes the duties and
obligations imposed by this Agreement upon the following terms and conditions, by all of which the Company and the holders of Rights Certificates, by their acceptance thereof, shall be bound: 

(a) The Rights Agent may consult with legal counsel (who may be legal counsel for the Company), and the advice of such counsel shall be
full and complete authorization and protection to the Rights Agent as to any action taken or omitted by it in good faith and in accordance with such opinion. 
 (b) Whenever in the performance of its duties under this Agreement the Rights Agent shall deem it necessary or desirable that any fact or matter (including, without limitation, the identity of any
Acquiring Person and the determination of Current Market Price) be proved or established by the Company prior to taking or suffering any action hereunder, such fact or matter (unless other evidence in respect thereof be herein specifically
prescribed) may be deemed to be conclusively proved and established by a certificate signed by the Chairman of the Board, the Vice Chairman, the Chief Executive Officer, the President, any Vice President, the Treasurer, any Assistant Treasurer, the
Secretary or any Assistant Secretary of the Company and delivered to the Rights Agent; and such certificate shall be full authorization to the Rights Agent for any action taken or suffered in good faith by it under the provisions of this Agreement
in reliance upon such certificate. 
 (c) The Rights Agent shall be liable hereunder only for its own gross negligence, bad
faith or willful misconduct. 
 (d) The Rights Agent shall not be liable for or by reason of any of the statements of fact or
recitals contained in this Agreement or in the Rights Certificates or be required to verify the same (except as to its countersignature on such Rights Certificates), but all such statements and recitals are and shall be deemed to have been made by
the Company only. 

  
 30 

 (e) The Rights Agent shall not be under any responsibility in respect of the validity of
this Agreement or the execution and delivery hereof (except the due execution hereof by the Rights Agent) or in respect of the validity or execution of any Rights Certificate (except its countersignature thereof); nor shall it be responsible for any
breach by the Company of any covenant or condition contained in this Agreement or in any Rights Certificate; nor shall it be responsible for any adjustment required under the provisions of Section 11 hereof or responsible for the manner, method
or amount of any such adjustment or the ascertaining of the existence of facts that would require any such adjustment (except with respect to the exercise of Rights evidenced by Rights Certificates after actual notice of any such adjustment); nor
shall it by any act hereunder be deemed to make any representation or warranty as to the authorization or reservation of any shares of Common Stock or Preferred Stock to be issued pursuant to this Agreement or any Rights Certificate or as to whether
any shares of Common Stock or Preferred Stock will, when so issued, be validly authorized and issued, fully paid and nonassessable. 
 (f) The Company agrees that it will perform, execute, acknowledge and deliver or cause to be performed, executed, acknowledged and delivered all such further and other acts, instruments and assurances as
may reasonably be required by the Rights Agent for the carrying out or performing by the Rights Agent of the provisions of this Agreement. 
 (g) The Rights Agent is hereby authorized and directed to accept instructions with respect to the performance of its duties hereunder from the Chairman of the Board, the Vice Chairman, the Chief Executive
Officer, the President, any Vice President, the Secretary, any Assistant Secretary, the Treasurer or any Assistant Treasurer of the Company, and to apply to such officers for advice or instructions in connection with its duties, and it shall not be
liable for any action taken or suffered to be taken by it in good faith in accordance with instructions of any such officer. 

(h) The Rights Agent and any stockholder, director, officer or employee of the Rights Agent may buy, sell or deal in any of the Rights or
other securities of the Company or become pecuniarily interested in any transaction in which the Company may be interested, or contract with or lend money to the Company or otherwise act as fully and freely as though it were not Rights Agent under
this Agreement. Nothing herein shall preclude the Rights Agent from acting in any other capacity for the Company or for any other legal entity. 
 (i) The Rights Agent may execute and exercise any of the rights or powers hereby vested in it or perform any duty hereunder either itself or by or through its attorneys or agents, and the Rights Agent
shall not be answerable or accountable for any act, default, neglect or misconduct of any such attorneys or agents or for any loss to the Company resulting from any such act, default, neglect or misconduct; provided, however, reasonable care was
exercised in the selection and continued employment thereof. 

  
 31 

 (j) No provision of this Agreement shall require the Rights Agent to expend or risk its own
funds or otherwise incur any financial liability in the performance of any of its duties hereunder or in the exercise of its rights if there shall be reasonable grounds for believing that repayment of such funds or adequate indemnification against
such risk or liability is not reasonably assured to it. 
 (k) If, with respect to any Rights Certificate surrendered to the
Rights Agent for exercise or transfer, the certificate attached to the form of assignment or form of election to purchase, as the case may be, has either not been completed or indicates an affirmative response to clause l and/or 2 thereof, the
Rights Agent shall not take any further action with respect to such requested exercise of transfer without first consulting with the Company. 
 Section 21. Change of Rights Agent. The Rights Agent or any successor Rights Agent may resign and be discharged from its duties under this Agreement upon thirty (30) days’
notice in writing mailed to the Company, and to each transfer agent of the Common Stock and Preferred Stock, by registered or certified mail, and, if such resignation occurs after the Distribution Date, to the registered holders of the Rights
Certificates by first-class mail. The Company may, in its sole discretion, remove the Rights Agent or any successor Rights Agent upon thirty (30) days’ notice in writing, mailed to the Rights Agent or successor Rights Agent, as the case
may be, and to each transfer agent of the Common Stock and Preferred Stock, by registered or certified mail, and, if such resignation occurs after the Distribution Date, to the holders of the Rights Certificates by first-class mail. If the Rights
Agent shall resign or be removed or shall otherwise become incapable of acting, the Company shall appoint a successor to the Rights Agent. If the Company shall fail to make such appointment within a period of thirty (30) days after giving
notice of such removal or after it has been notified in writing of such resignation or incapacity by the resigning or incapacitated Rights Agent or by the holder of a Rights Certificate (who shall, with such notice, submit his Rights Certificate for
inspection by the Company), then any registered holder of any Rights Certificate may apply to any court of competent jurisdiction for the appointment of a new Rights Agent. Any successor Rights Agent, whether appointed by the Company or by such a
court, shall be either (a) a legal business entity organized and doing business under the laws of the United States or of any state of the United States, in good standing, which is authorized under such laws to exercise corporate trust powers
and is subject to supervision or examination by federal or state authority and which has at the time of its appointment as Rights Agent a combined capital and surplus of at least $100,000,000 or (b) an Affiliate of a legal business entity
described in clause (a) of this sentence. After appointment, the successor Rights Agent shall be vested with the same powers, rights, duties and responsibilities as if it had been originally named as Rights Agent without further act or deed;
but the predecessor Rights Agent shall deliver and transfer to the successor Rights Agent any property at the time held by it hereunder, and execute and deliver any further assurance, conveyance, act or deed necessary for the purpose. Not later than
the effective date of any such appointment, the Company shall file notice thereof in writing with the predecessor Rights Agent and each transfer agent of the Common Stock and the Preferred 

  
 32 

 
Stock, and, if such appointment occurs after the Distribution Date, mail a notice thereof in writing to the registered holders of the Rights Certificates. Failure to give any notice provided for
in this Section 21, however, or any defect therein, shall not affect the legality or validity of the resignation or removal of the Rights Agent or the appointment of the successor Rights Agent, as the case may be. 

Section 22. Issuance of New Rights Certificates. Notwithstanding any of the provisions of this Agreement or of the
Rights to the contrary, the Company may, at its option, issue new Rights Certificates evidencing Rights in such form as may be approved by its Board of Directors to reflect any adjustment or change in the Purchase Price and the number or kind or
class of shares or other securities or property purchasable under the Rights Certificates made in accordance with the provisions of this Agreement. In addition, in connection with the issuance or sale of shares of Common Stock following the
Distribution Date and prior to the redemption or expiration of the Rights, the Company (a) shall, with respect to shares of Common Stock so issued or sold pursuant to the exercise of stock options or under any employee plan or arrangement,
granted or awarded as of the Distribution Date, or upon the exercise, conversion or exchange of securities hereinafter issued by the Company, and (b) may, in any other case, if deemed necessary or appropriate by the Board of Directors of the
Company, issue Rights Certificates representing the appropriate number of Rights in connection with such issuance or sale; provided, however, that (i) no such Rights Certificate shall be issued if, and to the extent that, the Company shall be
advised by counsel that such issuance would create a significant risk of material adverse tax consequences to the Company or the Person to whom such Rights Certificate would be issued, and (ii) no such Rights Certificate shall be issued if, and
to the extent that, appropriate adjustment shall otherwise have been made in lieu of the issuance thereof. 
 Section 23.
Redemption and Termination. 
 (a) The Board of Directors may, at its option, at any time prior to the close of
business on the tenth day after any Person becomes an Acquiring Person, redeem all but not less than all of the then outstanding Rights at a redemption price of $0.001 per Right, subject to adjustment as provided in Section 23(c) hereof (the
“Redemption Price”). The redemption of the Rights by the Board of Directors may be made effective at such time after the Board of Directors’ action to redeem the Rights on such basis and subject to such conditions, as the Board of
Directors, in its sole and absolute discretion, may establish. 
 (b) Without any further action and without any notice, the
right to exercise the Rights will terminate effective at the time so designated by action of the Board of Directors ordering the redemption of the Rights and the only right thereafter of the holders of Rights shall be to receive the Redemption
Price. Within ten (10) days after the effective time of the action of the Board of Directors ordering the redemption of the Rights, the Company shall give notice of such redemption to the holders of the then outstanding Rights by mailing such
notice to all such holders at their last addresses as they appear upon the registry books of the Rights Agent or, prior to the Distribution Date, 

  
 33 

 
on the registry books of the transfer agent for the Common Stock; provided, however, that the failure to give, or any defect in, any such notice shall not affect the validity of
such redemption. Any notice which is mailed in the manner herein provided shall be deemed given, whether or not the holder receives the notice. Each notice of redemption will state the method by which the payment of the Redemption Price will be
made. At the option of the Board of Directors, the Redemption Price may be paid in cash to each Rights holder or by the issuance of shares (and, at the Company’s election pursuant to Section 14(b) hereof, cash in lieu of fractions of
shares other than fractions which are integral multiples of one one-thousandth of a share of Preferred Stock or Common Stock having an aggregate Current Market Price equal to such cash payment. 

(c) In the event the Company shall at any time after the date of this Agreement but before such time as any Person becomes an Acquiring
Person (i) pay any dividend on Common Stock in shares of Common Stock, (ii) subdivide or split the outstanding shares of Common Stock into a greater number of shares or (iii) combine or consolidate the outstanding shares of Common
Stock into a smaller number of shares or effect a reverse split of the outstanding shares of Common Stock and as a consequence thereof the number of Rights outstanding shall change, then, and in each such event, the Redemption Price may, by action
of the Board of Directors in its discretion, be appropriately adjusted in respect of such transaction so as to maintain the aggregate Redemption Price of all Rights after such transaction at the same amount, insofar as practicable, as before the
transaction. 
 Section 24. Notice of Certain Events. 

(a) In case the Company shall propose, at any time after the Distribution Date, (i) to pay any dividend payable in stock of any class
to the holders of Preferred Stock or to make any other distribution to the holders of Preferred Stock (other than a regular quarterly cash dividend out of earnings or retained earnings of the Company), or (ii) to offer to the holders of
Preferred Stock rights or warrants to subscribe for or to purchase any additional shares of Preferred Stock or shares of stock of any class or any other securities, rights or options, or (iii) to effect any reclassification of its Preferred
Stock (other than a reclassification involving only the subdivision of outstanding shares of Preferred Stock), or (iv) to effect any consolidation or merger into or with any other Person (other than a Subsidiary of the Company in a transaction
which complies with Section 11(o) hereof), or to effect any sale or other transfer (or to permit one or more of its Subsidiaries to effect any sale or other transfer), in one transaction or a series of related transactions, of more than 50% of
the assets, cash flow or earning power of the Company and its Subsidiaries (taken as a whole) to any other Person or Persons (other than the Company and/or any of its Subsidiaries in one or more transactions each of which complies with
Section 11(o) hereof), or (v) to effect the liquidation, dissolution or winding up of the Company, then, in each such case, the Company shall give to each holder of a Rights Certificate, to the extent feasible and in accordance with
Section 25 hereof, a notice of such proposed action, which shall specify the record date for the purposes of such stock dividend, distribution of rights or warrants, or the date on which such reclassification, consolidation, merger, sale,
transfer, liquidation, dissolution, or 

  
 34 

 
winding up is to take place and the date of participation therein by the holders of the shares of Preferred Stock, if any such date is to be fixed, and such notice shall be so given in the case
of any action covered by clause (i) or (ii) above at least twenty (20) days prior to the record date for determining holders of the shares of Preferred Stock for purposes of such action, and in the case of any such other action, at
least twenty (20) days prior to the date of the taking of such proposed action or the date of participation therein by the holders of the shares of Preferred Stock, whichever shall be the earlier. 

(b) In case any of the events set forth in Section 11(a)(ii) hereof shall occur, then, in any such case, (i) the Company shall
as soon as practicable thereafter give to each holder of a Rights Certificate, to the extent feasible and in accordance with Section 25 hereof, a notice of the occurrence of such event, which shall specify the event and the consequences of the
event to holders of Rights under Section 11(a)(ii) hereof, and (ii) all references in the preceding paragraph to Preferred Stock shall be deemed thereafter to refer to Common Stock and/or, if appropriate, other securities. 

Section 25. Notices. Notices or demands authorized by this Agreement to be given or made by the Rights Agent or by
the holder of any Rights Certificate to or on the Company shall be sufficiently given or made if sent by first-class mail, postage prepaid, addressed (until another address is filed in writing with the Rights Agent) as follows: 

Vonage Holdings Corp. 
 23 Main Street, Holmdel 
 Holmdel, New Jersey 07733 

Attention: Chief Legal Officer 
 Telephone: (732) 444-2364 
 Facsimile: (732) 202-5221 

Subject to the provisions of Section 21, any notice or demand authorized by this Agreement to be given or made by the Company or by the holder of
any Rights Certificate to or on the Rights Agent shall be sufficiently given or made if sent by first-class mail, postage prepaid, addressed (until another address is filed in writing with the Company) as follows: 

American Stock Transfer & Trust Company, LLC 
 6201 15th Avenue 
 Brooklyn, New York 11219 

Attention: Corporate Trust Department 
 Telephone: (718) 921-8360 
 Facsimile: (718) 765-8719 

with copy (which shall not constitute notice) to: 
 American Stock Transfer & Trust Company, LLC 
 6201 15th Avenue

 Brooklyn, New York 11219 
 Attention: General Counsel 

  
 35 

 Notices or demands authorized by this Agreement to be given or made by the Company or the Rights Agent to
the holder of any Rights Certificate (or, if prior to the Distribution Date, to the holder of certificates representing shares of Common Stock) shall be sufficiently given or made if sent by first-class mail, postage prepaid, addressed to such
holder at the address of such holder as shown on the registry books of the Company. 
 Section 26. Supplements and
Amendments. For as long as the Rights are then redeemable, the Company (at the direction of the Board of Directors) may, and the Rights Agent shall if the Company so directs, supplement or amend any provision of this Agreement without the
approval of any holders of the Rights. At any time when the Rights are not then redeemable, the Company (at the direction of the Board of Directors) may, and the Rights Agent shall if the Company so directs, supplement or amend this Agreement
without the approval of any holders of Rights, provided that no such supplement or amendment may (a) adversely affect the interests of the holders of Rights as such (other than an Acquiring Person or any other Person in whose hands Rights are
null and void under the provisions of Section 7(e) hereof), (b) cause this Agreement again to become amendable other than in accordance with this sentence or (c) cause the Rights again to become redeemable. Notwithstanding anything
contained in this Agreement to the contrary, no supplement or amendment shall be made which changes the Redemption Price. Upon the delivery of a certificate from an appropriate officer of the Company which states that the proposed supplement or
amendment is in compliance with the terms of this Section 26, the Rights Agent shall execute such supplement or amendment and, subject to the last sentence of this Section 26, such amendment shall become effective immediately upon
execution by the Company, whether or not also executed by the Rights Agent. Notwithstanding anything contained in this Agreement to the contrary, the Rights Agent may, but shall not be obligated to, enter into any supplement or amendment that
affects the Rights Agent’s own rights, duties, obligations or immunities under this Agreement. 
 Section 27.
Exchange. 
 (a) The Board of Directors may, at its option, at any time after any Person becomes an Acquiring
Person, exchange all or part of the then outstanding Rights (which shall not include Rights that have become null and void pursuant to the provisions of Section 7(e) hereof) by exchanging for each such Right one share of Common Stock of the
Company, appropriately adjusted to reflect any stock split, stock dividend or similar transaction occurring after the date hereof (such number of shares of Common Stock per Right being hereinafter referred to as the “Exchange Ratio”);
provided, however, that in connection with any exchange effected pursuant to this Section 27, the Board of Directors may (but shall not be required to) determine that a holder of Rights shall not be entitled to receive shares of Common Stock
that would result in such holder, together with such holder’s Affiliates and Associates, becoming the Beneficial Owner of more than 4.9% of the shares of Stock then-outstanding (treating all shares of Stock as a single class). If a

  
 36 

 
holder would, but for the proviso set forth in the previous sentence, be entitled to receive a number of shares under this subsection (a) that would otherwise result in such holder, together
with such holder’s Affiliates and Associates, becoming the Beneficial Owner of shares of stock in excess of 4.9% of the shares of Stock then-outstanding (such shares, the “Excess Exchange Shares”), in lieu of receiving such Excess
Exchange Shares, such holder will be entitled to receive an amount in (1) cash, (2) debt securities of the Company, (3) other assets, or (4) any combination of the foregoing, having an aggregate value equal to the Current Market
Price per share of the Common Stock on the date of the occurrence of a Triggering Event multiplied by the number of Excess Exchange Shares that would otherwise have been issuable to such holder. The exchange of the Rights by the Board of Directors
may be made effective at such time, on such basis and with such conditions as the Board of Directors in its sole discretion may establish. Prior to effecting an exchange pursuant to this Section 27, the Board of Directors may direct the Company
to enter into a Trust Agreement in such form and with such terms as the Board of Directors shall then approve (the “Trust Agreement”). If the Board of Directors so directs, the Company shall enter into the Trust Agreement and shall issue
to the trust created by such agreement (the “Trust”) all of the shares of Common Stock issuable pursuant to the exchange, and all Persons entitled to receive shares pursuant to the exchange shall be entitled to receive such shares (and any
dividends or distributions made thereon after the date on which such shares are deposited in the Trust) only from the Trust and solely upon compliance with the relevant terms and provisions of the Trust Agreement. Notwithstanding the foregoing, the
Board of Directors shall not be empowered to effect such exchange at any time after any Person (other than an Exempt Person), together with all Affiliates and Associates of such Person, becomes the Beneficial Owner of fifty percent (50%) or
more of the Common Stock then outstanding. 
 (b) Immediately upon the action of the Board of Directors ordering the exchange of
any Rights pursuant to Section 27(a) and without any further action and without any notice, the right to exercise such Rights shall terminate and the only right thereafter of a holder of such Rights shall be to receive that number of shares of
Common Stock equal to the number of such Rights held by such holder multiplied by the Exchange Ratio. The Company shall promptly give public notice of any such exchange; provided, however, that the failure to give, or any defect in, such notice
shall not affect the validity of such exchange. The Company promptly shall mail a notice of any such exchange to all of the holders of such Rights at their last addresses as they appear upon the registry books of the Rights Agent. Any notice which
is mailed in the manner herein provided shall be deemed given, whether or not the holder receives the notice. Each such notice of exchange will state the method by which the exchange of the shares of Common Stock for Rights will be effected and, in
the event of any partial exchange, the number of Rights which will be exchanged. Any partial exchange shall be effected pro rata based on the number of Rights (other than Rights which have become null and void pursuant to the provisions of
Section 7(e) hereof) held by each holder of Rights. 
 (c) In the event that there shall not be sufficient shares of Common
Stock issued but not outstanding or authorized but unissued to permit any exchange of 

  
 37 

 
Rights as contemplated in accordance with this Section 27, the Company shall make adequate provisions to substitute to the extent of such insufficiency, for each share of Common Stock that
would otherwise be issuable upon exchange of a Right, a number of shares of Preferred Stock or fractions thereof having an aggregate value equal the then Current Market Price per share of the Common Stock (determined pursuant to Section 11(d)
hereof) multiplied by the Exchange Ratio, provided, however, the Board of Directors may (but shall not be required to) determine that a holder of Rights shall not be entitled to receive shares of Preferred Stock that would result in such holder,
together with such holder’s Affiliates and Associates, becoming the Beneficial Owner of more than 4.9% of the Preferred Stock to be then-outstanding. If a holder would, but for the previous sentence, be entitled to receive a number of shares of
Preferred Stock that would otherwise result in such holder, together with such holder’s Affiliates and Associates, becoming the Beneficial Owner of in excess of 4.9% of the Preferred Stock to be then-outstanding (such shares, the “Excess
Preferred Shares”), in lieu of receiving such Excess Preferred Shares, such holder will be entitled to receive an amount in (1) cash, (2) debt securities of the Company, (3) other assets, or (4) any combination of the
foregoing, having an aggregate value equal to the Current Market Price per share of the Common Stock on the date of the occurrence of a Triggering Event multiplied by the number of Excess Preferred Shares that would otherwise have been issuable to
such holder. 
 (d) The Company shall not be required to issue fractions of shares of Common Stock or to distribute certificates
which evidence fractional shares. In lieu of such fractional shares, the Company shall pay to the registered holders of the Right Certificates with regard to which such fractional shares of Common Stock would otherwise be issuable an amount in cash
equal to the same fraction of the current market value of a whole share of Common Stock. For the purposes of this Section 27(d), the current market value of a whole share of Common Stock shall be the closing price of a share of Common Stock for
the Trading Day immediately prior to the date of exchange pursuant to this Section 27. 
 Section 28.
Successors. All the covenants and provisions of this Agreement by or for the benefit of the Company or the Rights Agent shall bind and inure to the benefit of their respective successors and assigns hereunder. 

Section 29. Determinations and Actions by the Board of Directors, etc. For all purposes of this Agreement, any
calculation of the number of shares of Common Stock outstanding at any particular time, including for purposes of determining the particular percentage of such outstanding shares of Common Stock of which any Person is the Beneficial Owner, shall be
made in accordance with the last sentence of Rule 13d-3(d)(1)(i) of the General Rules and Regulations under the Exchange Act. The Board of Directors of the Company (with, where specifically provided for herein, the concurrence of a majority of the
members of the Board of Directors of the Company) shall have the exclusive power and authority to administer this Agreement and to exercise all rights and powers specifically granted to the Board (with, where specifically provided for herein, the
concurrence of a majority of the members of the Board of Directors of the Company) or to the Company, or as may be necessary or advisable in the administration 

  
 38 

 
of this Agreement, including, without limitation, the right and power to (i) interpret the provisions of this Agreement, and (ii) make all determinations deemed necessary or advisable
for the administration of this Agreement (including a determination to redeem or not redeem the Rights or to amend the Agreement). All such actions, calculations, interpretations and determinations (including, for purposes of clause (y) below,
all omissions with respect to the foregoing) which are done or made by the Board (with, where specifically provided for herein, the concurrence of a majority of the members of the Board of Directors of the Company) in good faith, shall be final,
conclusive and binding on the Company, the Rights Agent, the holders of the Rights and all other parties. 
 Section 30.
Benefits of this Agreement. Nothing in this Agreement shall be construed to give to any Person other than the Company, the Rights Agent and the registered holders of the Rights Certificates (and, prior to the Distribution Date,
registered holders of the Common Stock) any legal or equitable right, remedy or claim under this Agreement; but this Agreement shall be for the sole and exclusive benefit of the Company, the Rights Agent and the registered holders of the Rights
Certificates (and, prior to the Distribution Date, registered holders of the Common Stock). 
 Section 31.
Severability. If any term, provision, covenant or restriction of this Agreement is held by a court of competent jurisdiction or other authority to be invalid, void or unenforceable, the remainder of the terms, provisions, covenants and
restrictions of this Agreement shall remain in full force and effect and shall in no way be affected, impaired or invalidated; provided, however, that notwithstanding anything in this Agreement to the contrary, if any such term, provision, covenant
or restriction is held by such court or authority to be invalid, void or unenforceable and the Board of Directors of the Company determines in its good faith judgment that severing the invalid language from this Agreement would adversely affect the
purpose or effect of this Agreement, the right of redemption set forth in Section 23 hereof shall be reinstated and shall not expire until the close of business on the twentieth day following the date of such determination by the Board of
Directors. 
 Section 32. Governing Law. This Agreement, each Right and each Rights Certificate issued
hereunder 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. 
 Section 33. Counterparts. This Agreement 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. 

Section 34. Descriptive Headings. Descriptive headings of the several sections of this Agreement are inserted for
convenience only and shall not control or affect the meaning or construction of any of the provisions hereof. 

  
 39 

 [SIGNATURE PAGE IMMEDIATELY FOLLOWS] 

  
 40 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed and
their respective corporate seals to be hereunto affixed and attested, all as of the day and year first above written. 
  

									
	Attest:	 		 	VONAGE HOLDINGS, CORP.
					
	 By:
	 	/s/ Randy K. Rutherford	 		 	By:	 	/s/ Barry L. Rowan
	 Name:
	 	Randy K. Rutherford	 		 	Name:	 	Barry L. Rowan
	 Title:
	 	 Attorney at Law

State of New Jersey
	 		 	 Title:
	 	Executive Vice President, Chief Financial
		 	 		 		 	Officer, Chief Administrative Officer and
		 		 		 		 	Treasurer
			
	 Attest:
	 		 	American Stock Transfer & Trust Company, LLC
					
	 By:
	 	/s/ Marianela Patterson	 		 	By:	 	/s/ Paula Caroppoli
	 Name:
	 	Marianela Patterson	 		 	 Name:
	 	Paula Caroppoli
	 Title:
	 	Relationship Manager	 		 	 Title:
	 	Senior Vice President

  
 41 

 EXHIBIT A 
 CERTIFICATE OF DESIGNATIONS, POWERS, PREFERENCES 
 AND RIGHTS OF SERIES A
PARTICIPATING PREFERRED STOCK 
 of 
 VONAGE HOLDINGS CORP. 
 Pursuant to Section 151 of the General
Corporation Law 
 of the State of Delaware 
 Vonage Holdings Corp., a corporation organized and existing under the General Corporation Law of the State of Delaware (hereinafter called the “Corporation”), hereby certifies that the following
resolution was adopted by the Board of Directors of the Corporation as required by Section 151 of the General Corporation Law at a meeting duly held and called on June 7, 2012: 

RESOLVED, that pursuant to the authority expressly vested in the Board of Directors of the Corporation by its Restated Certificate of
Incorporation of the Corporation, the Board of Directors duly adopted the following resolutions: 
 RESOLVED, that, pursuant to
Article IV of the Corporation’s Restated Certificate of Incorporation (which authorizes 5,000,000 shares of preferred stock, par value $0.001 per share (“Preferred Stock”)), the Board of Directors hereby, creates a series of Preferred
Stock designated Series A Participating Preferred Stock (“Series A Participating Preferred Stock”) and fixes the powers, designations, preferences and relative, participating, optional and other special rights, and the qualifications,
limitations and restrictions, of such series of Preferred Stock as follows: 
 RESOLVED, that each share of such series of
Preferred Stock shall rank equally in all respects and shall be subject to the following provisions: 
 1. Designation and
Amount. The shares of such series shall be designated as “Series A Participating Preferred Stock” and the number of shares constituting such series shall be 250,000. 

2. Dividends and Distributions. 
 (a) Subject to the rights of the holders of any shares of any series of preferred stock of the Corporation ranking prior and superior to the Series A Participating Preferred Stock with respect to
dividends, the holders of shares of Series A Participating Preferred Stock shall be entitled to receive, when, as and if declared by the Board of Directors out of funds legally available for the purpose, quarterly dividends payable in cash on the
last day of March, June, September and December in each year (each such date being referred to herein as a “Quarterly Dividend Payment Date”), commencing on 

  
 Exhibit A -
Page 1 

 
the first Quarterly Dividend Payment Date after the first issuance of a share or fraction of a share of Series A Participating Preferred Stock, in an amount per share (rounded to the nearest
cent) equal to (subject to the provision for adjustment hereinafter set forth), 1000 times the aggregate per share amount of all cash dividends, and 1000 times the aggregate per share amount (payable in kind) of all non-cash dividends or other
distributions other than a dividend payable in shares of Common Stock, par value $0.001 per share (the “Common Stock”), of the Corporation or a subdivision of the outstanding shares of Common Stock (by reclassification or otherwise),
declared on the Common Stock since the immediately preceding Quarterly Dividend Payment Date, or, with respect to the first Quarterly Dividend Payment Date, since the first issuance of any share or fraction of a share of Series A Participating
Preferred Stock. In the event the Corporation shall at any time after June 7, 2012 (the “Rights Declaration Date”) (i) declare any dividend on Common Stock payable in shares of Common Stock, (ii) subdivide the outstanding
Common Stock, or (iii) combine the outstanding Common Stock into a smaller number of shares, then in each such case the amount to which holders of shares of Series A Participating Preferred Stock were entitled immediately prior to such event
shall be adjusted by multiplying such amount by a fraction the numerator of which is the number of shares of Common Stock outstanding immediately after such event and the denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event. 
 (b) The Corporation shall declare a dividend or distribution on the outstanding
shares of Series A Participating Preferred Stock as provided in Paragraph (a) above immediately after it declares a dividend or distribution on the Common Stock (other than a dividend payable in shares of Common Stock). 

(c) Dividends shall begin to accrue and be cumulative on outstanding shares of Series A Participating Preferred Stock from the Quarterly
Dividend Payment Date next preceding the date of issue of such shares of Series A Participating Preferred Stock, unless the date of issue of such shares is prior to the record date for the first Quarterly Dividend Payment Date, in which case
dividends on such shares shall begin to accrue from the date of issue of such shares, or unless the date of issue is a Quarterly Dividend Payment Date or is a date after the record date for the determination of holders of shares of Series A
Participating Preferred Stock entitled to receive a quarterly dividend and before such Quarterly Dividend Payment Date, in either of which events such dividends shall begin to accrue and be cumulative from such Quarterly Dividend Payment Date.
Accrued but unpaid dividends shall not bear interest. Dividends paid on the shares of Series A Participating Preferred Stock in an amount less than the total amount of such dividends at the time accrued and payable on such shares shall be allocated
pro rata on a share-by-share basis among all such shares at the time outstanding. The Board of Directors may fix a record date for the determination of holders of shares of Series A Participating Preferred Stock entitled to receive payment of a
dividend or distribution declared thereon, which record date shall be no more than thirty (30) days prior to the date fixed for the payment thereof. 
 3. Voting Rights. The holders of shares of Series A Participating Preferred Stock shall have the following voting rights: 

  
 Exhibit A -
Page 2 

 (a) Subject to the provision for adjustment hereinafter set forth, each share of Series A
Participating Preferred Stock shall entitle the holder thereof to 1000 votes on all matters submitted to a vote of the stockholders of the Corporation. In the event the Corporation shall at any time after the Rights Declaration Date (i) declare
any dividend on Common Stock payable in shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii) combine the outstanding Common Stock into a smaller number of shares, then in each such case the number of votes per
share to which holders of shares of Series A Participating Preferred Stock were entitled immediately prior to such event shall be adjusted by multiplying such number by a fraction the numerator of which is the number of shares of Common Stock
outstanding immediately after such event and the denominator of which is the number of shares of Common Stock that were outstanding immediately prior to such event. 
 (b) Except as otherwise provided in the Restated Certificate of Incorporation, or by law, the holders of shares of Series A Participating Preferred Stock and the holders of shares of Common Stock and any
other capital stock of the Corporation having general voting rights shall vote together as one class on all matters submitted to a vote of stockholders of the Corporation. 
 (c) Except as otherwise required by applicable law or as set forth herein, the shares of Series A Participating Preferred Stock shall not have any relative, participating, optional or other special voting
rights and powers and the consent of the holders thereof shall not be required (except to the extent they are entitled to vote with holders of Common Stock as set forth herein) for the taking of any corporate action. 

4. Certain Restrictions. 
 (a) Whenever quarterly dividends or other dividends or distributions payable on the Series A Participating Preferred Stock as provided in Section 2 hereof are in arrears, thereafter and until all
accrued and unpaid dividends and distributions, whether or not declared, on shares of Series A Participating Preferred Stock outstanding shall have been paid in full, the Corporation shall not: 

(i) declare or pay dividends on, make any other distributions on, or redeem or purchase or otherwise acquire for consideration any
shares of stock ranking junior (either as to dividends or upon liquidation, dissolution or winding up) to the Series A Participating Preferred Stock; 
 (ii) declare or pay dividends on or make any other distributions on any shares of stock ranking on a parity (either as to dividends or upon liquidation, dissolution or winding up) with the Series A
Participating Preferred Stock, except dividends paid ratably on the Series A Participating Preferred Stock and all such parity stock on which dividends are payable or in arrears in proportion to the total amounts to which the holders of all such
shares are then entitled; 
 (iii) redeem or purchase or otherwise acquire for consideration shares of any stock ranking on a
parity (either as to dividends or upon liquidation, 

  
 Exhibit A -
Page 3 

 
dissolution or winding up) with the Series A Participating Preferred Stock, provided that the Corporation may at any time redeem, purchase or otherwise acquire shares of any such parity stock in
exchange for shares of any stock of the Corporation ranking junior (either as to dividends or upon dissolution, liquidation or winding up) to the Series A Participating Preferred Stock; or 

(iv) purchase or otherwise acquire for consideration any shares of Series A Participating Preferred Stock, or any shares of stock
ranking on a parity (either as to dividends or upon liquidation, dissolution or winding up) with the Series A Participating Preferred Stock, except in accordance with a purchase offer made in writing or by publication (as determined by the Board of
Directors) to all holders of such shares upon such terms as the Board of Directors, after consideration of the respective annual dividend rates and other relative rights and preferences of the respective series and classes, shall determine in good
faith will result in fair and equitable treatment among the respective series or classes. 
 (b) The Corporation shall not
permit any subsidiary of the Corporation to purchase or otherwise acquire for consideration any shares of stock of the Corporation unless the Corporation could, under Paragraph (a) of this Section 4, purchase or otherwise acquire such
shares at such time and in such manner. 
 5. Reacquired Shares. Any shares of Series A Participating Preferred Stock
purchased or otherwise acquired by the Corporation in any manner whatsoever shall be retired and canceled promptly after the acquisition thereof. All such shares shall upon their cancellation become authorized but unissued shares of Preferred Stock
and may be reissued as part of a new series of Preferred Stock to be created by resolution or resolutions of the Board of Directors, subject to the conditions and restrictions on issuance set forth herein. 

6. Liquidation, Dissolution or Winding Up. 
 (a) Upon any liquidation (voluntary or otherwise), dissolution or winding up of the Corporation, no distribution shall be made to the holders of shares of stock ranking junior (either as to dividends or
upon liquidation, dissolution or winding up) to the Series A Participating Preferred Stock unless, prior thereto, the holders of shares of Series A Participating Preferred Stock shall have received an amount equal to $0.001 per share of Series A
Participating Preferred Stock, plus an amount equal to accrued and unpaid dividends and distributions thereon, whether or not declared, to the date of such payment (the “Series A Liquidation Preference”). Following the payment of the full
amount of the Series A Liquidation Preference, no additional distributions shall be made to the holders of shares of Series A Participating Preferred Stock unless, prior thereto, the holders of shares of Common Stock shall have received an amount
per share (the “Common Adjustment”) equal to the quotient obtained by dividing (i) the Series A Liquidation Preference by (ii) 1000 (as appropriately adjusted as set forth in subparagraph (c) below to reflect such events as
stock splits, stock dividends and recapitalizations with respect to the Common Stock) (such number in clause (ii), the “Adjustment Number”). Following the payment of the full amount of the Series A

  
 Exhibit A -
Page 4 

 
Liquidation Preference and the Common Adjustment in respect of all outstanding shares of Series A Participating Preferred Stock and Common Stock, respectively, holders of Series A Participating
Preferred Stock and holders of shares of Common Stock shall receive their ratable and proportionate share of the remaining assets to be distributed in the ratio of the Adjustment Number to 1 with respect to such Preferred Stock and Common Stock, on
a per share basis, respectively. 
 (b) In the event, however, that there are not sufficient assets available to permit payment
in full of the Series A Liquidation Preference and the liquidation preferences of all other series of Preferred Stock, if any, which rank on a parity (either as to dividends or upon liquidation, dissolution or winding up) with the Series A
Participating Preferred Stock, then such remaining assets shall be distributed ratably to the holders of such parity shares in proportion to their respective liquidation preferences. In the event, however, that there are not sufficient assets
available to permit payment in full of the Common Adjustment, then such remaining assets shall be distributed ratably to the holders of Common Stock. 
 (c) In the event the Corporation shall at any time after the Rights Declaration Date (i) declare any dividend on Common Stock payable in shares of Common Stock, (ii) subdivide the outstanding
Common Stock, or (iii) combine the outstanding Common Stock into a smaller number of shares, then in each such case the Adjustment Number in effect immediately prior to such event shall be adjusted by multiplying such Adjustment Number by a
fraction the numerator of which is the number of shares of Common Stock outstanding immediately after such event and the denominator of which is the number of shares of Common Stock that were outstanding immediately prior to such event. 

7. Consolidation, Merger, etc. In case the Corporation shall enter into any consolidation, merger, combination or other
transaction in which the shares of Common Stock are exchanged for or changed into other stock or securities, cash and/or any other property, then in any such case the shares of Series A Participating Preferred Stock shall at the same time be
similarly exchanged or changed in an amount per share (subject to the provision for adjustment hereinafter set forth) equal to 1000 times the aggregate amount of stock, securities, cash and/or any other property (payable in kind), as the case may
be, into which or for which each share of Common Stock is changed or exchanged. In the event the Corporation shall at any time after the Rights Declaration Date (i) declare any dividend on Common Stock payable in shares of Common Stock,
(ii) subdivide the outstanding Common Stock, or (iii) combine the outstanding Common Stock into a smaller number of shares, then in each such case the amount set forth in the preceding sentence with respect to the exchange or change of
shares of Series A Participating Preferred Stock shall be adjusted by multiplying such amount by a fraction the numerator of which is the number of shares of Common Stock outstanding immediately after such event and the denominator of which is the
number of shares of Common Stock that were outstanding immediately prior to such event. 
 8. No Redemption. The shares
of Series A Participating Preferred Stock shall not be redeemable. 

  
 Exhibit A -
Page 5 

 9. Ranking. Unless otherwise provided in the Restated Certificate of Incorporation of
the Corporation, or a certificate of designations relating to a subsequent series of preferred stock of the Corporation, the Series A Participating Preferred Stock shall rank junior to all other series of the Corporation’s preferred stock as to
the payment of dividends and the distribution of assets on liquidation, dissolution or winding up and senior to the Common Stock. 
 10. Amendment. The certificate of incorporation of the Corporation shall not be further amended in any manner which would materially alter or change the powers, preferences or special rights of the
Series A Participating Preferred Stock so as to affect them adversely without the affirmative vote of the holders of a majority or more of the outstanding shares of Series A Participating Preferred Stock, voting separately as a class. 

11. Fractional Shares. Series A Participating Preferred Stock may be issued in fractions of a share which shall entitle the
holder, in proportion to such holder’s fractional shares, to exercise voting rights, receive dividends, participate in distributions and to have the benefit of all other rights of holders of Series A Participating Preferred Stock. 

IN WITNESS WHEREOF, this Certificate of Designation is executed on behalf of the Corporation by its duly authorized officer this 7th day
of June 2012. 
  

			
	VONAGE HOLDINGS CORP.
		
	By:	 	 
		 	Name:
		 	Title:

  
 Exhibit A -
Page 6 

 Exhibit B 
 [Form of Rights Certificate] 
  

			
	Certificate No. R-	  	Rights

 THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF THE COMPANY, AT $0.001 PER RIGHT ON THE TERMS SET
FORTH IN THE RIGHTS AGREEMENT. UNDER CERTAIN CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY AN ACQUIRING PERSON (AS SUCH TERM IS DEFINED IN THE RIGHTS AGREEMENT) AND ANY SUBSEQUENT HOLDER OF SUCH RIGHTS MAY BECOME NULL AND VOID. [THE RIGHTS REPRESENTED
BY THIS RIGHTS CERTIFICATE ARE OR WERE BENEFICIALLY OWNED BY A PERSON WHO WAS OR BECAME AN ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT).] ACCORDINGLY, THIS RIGHTS
CERTIFICATE AND THE RIGHTS REPRESENTED HEREBY MAY BECOME NULL AND VOID IN THE CIRCUMSTANCES SPECIFIED IN SECTION 7(e) OF SUCH AGREEMENT. 
 Rights Certificate 
 VONAGE HOLDINGS CORP. 

This certifies that
                        , or registered assigns, is the registered owner of the number of Rights set forth above, each of
which entitles the owner thereof, subject to the terms, provisions and conditions of the Rights Agreement, dated as of June 7, 2012 (as it may be amended from time to time, the “Rights Agreement”), between Vonage Holdings Corp., a
Delaware corporation (the “Company”), and American Stock Transfer & Trust Company, LLC (the “Rights Agent”), to purchase from the Company at any time prior to 5:00 P.M. (New York City time) on June 7, 2013 (subject
to extension by the Board of Directors as provided in the Rights Agreement) at the office or offices of the Rights Agent designated for such purpose, or its successors as Rights Agent, one one-thousandth of a fully paid, non-assessable share of
Series A Participating Preferred Stock (the “Preferred Stock”) of the Company, at a purchase price of $10.00 per one one-thousandth of a share (the “Purchase Price”), upon presentation and surrender of this Rights Certificate
with the Form of Election to Purchase and related Certificate duly executed. The number of Rights evidenced by this Rights Certificate (and the number of shares which may be purchased upon exercise thereof) set forth above, and the Purchase Price
per share set forth above, are the number and Purchase Price as of June 7, 2012 based on the Preferred Stock as constituted at such date. The Company reserves the right to require prior to the occurrence of a Triggering Event (as such term is
defined in the Rights Agreement) that a number of Rights be exercised so that only whole shares of Preferred Stock will be issued. 
 Upon the occurrence of a Triggering Event (as such term is defined in the Rights Agreement), if the Rights evidenced by this Rights Certificate are beneficially

  
 Exhibit B -
Page 1 

 
owned by (i) an Acquiring Person or an Affiliate or Associate of any such Acquiring Person (as such terms are defined in the Rights Agreement), (ii) a transferee of any such Acquiring
Person, Associate or Affiliate, or (iii) under certain circumstances specified in the Rights Agreement, a transferee of a person who, after such transfer, became an Acquiring Person, or an Affiliate or Associate of an Acquiring Person, such
Rights shall become null and void and no holder hereof shall have any right with respect to such Rights from and after the occurrence of such Triggering Event. 
 As provided in the Rights Agreement, the Purchase Price and the number and kind of shares of Preferred Stock or other securities, which may be purchased upon the exercise of the Rights evidenced by this
Rights Certificate are subject to modification and adjustment upon the happening of certain events, including a Triggering Event. 
 This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement, which terms, provisions and conditions are hereby incorporated herein by reference and made a
part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities hereunder of the Rights Agent, the Company and the holders of the Rights Certificates,
which limitations of rights include the temporary suspension of the exercisability of such Rights under the specific circumstances set forth in the Rights Agreement. Copies of the Rights Agreement are on file at the above-mentioned office of the
Rights Agent and are also available upon written request to the Rights Agent. 
 This Rights Certificate, with or without other
Rights Certificates, upon surrender at the principal office or offices of the Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing Rights entitling the
holder to purchase a like aggregate number of one one-thousandth of a share of Preferred Stock as the Rights evidenced by the Rights Certificate or Rights Certificates surrendered shall have entitled such holder to purchase. If this Rights
Certificate shall be exercised in part, the holder shall be entitled to receive upon surrender hereof another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. 

Subject to the provisions of the Rights Agreement, the Rights evidenced by this Certificate may be redeemed by the Company at its option
at a redemption price of $0.001 per Right at any time prior to the earlier of the close of business on the tenth day following the Stock Acquisition Date (as such time period may be extended pursuant to the Rights Agreement). In addition, the Rights
may be exchanged, in whole or in part, for shares of the Common Stock, shares of preferred stock of the Company having essentially the same value or economic rights as such shares or other consideration as provided by the Rights Agreement.
Immediately upon the action of the Board of Directors of the Company authorizing any such exchange, and without any further action or any notice, the Rights (other than Rights which are not subject to such exchange) will terminate and the Rights
will only enable holders to receive the shares issuable upon such exchange. 

  
 Exhibit B -
Page 2 

 No fractional shares of Preferred Stock will be issued upon the exercise of any Right or
Rights evidenced hereby (other than fractions which are integral multiples of one one-thousandth of a share of Preferred Stock, which may, at the election of the Company, be evidenced by depositary receipts), but in lieu thereof a cash payment will
be made, as provided in the Rights Agreement. 
 No holder of this Rights Certificate shall be entitled to vote or receive
dividends or be deemed for any purpose the holder of shares of Preferred Stock or of any other securities of the Company which may at any time be issuable on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be
construed to confer upon the holder hereof, as such, any of the rights of a stockholder of the Company or any right to vote for the election of directors or upon any matter submitted to stockholders at any meeting thereof, or to give consent to or
withhold consent from any corporate action, or, to receive notice of meetings or other actions affecting stockholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Right or
Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. 
 This Rights
Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. 

WITNESS the facsimile signature of the proper officers of the Company and its corporate seal. 

Dated as of
                            . 

 

									
	Attest:	 		 	VONAGE HOLDINGS CORP.
					
	By:	 	 	 		 	By:	 	 
	 Name:
	 	Secretary	 		 	 Name:
	 	
	 Title:
	 		 		 	 Title:
	 	

  

									
	Countersigned:	 		 	
			
	Attest:	 		 	AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC
					
	 By:
	 	 	 		 	By:	 	 
	 Name:
	 		 		 		 	Authorized Signature
	 Title:
	 		 		 		 	

  
 Exhibit B -
Page 3 

 [Form of Reverse Side of Rights Certificate] 

FORM OF ASSIGNMENT 
 (To be executed by the registered holder if such holder desires to transfer the Rights Certificate.) 
 FOR VALUE RECEIVED                          hereby sells, assigns and
transfers unto                          (Please print name and address of transferee) this Rights Certificate, together
with all right, title and interest therein, and does hereby irrevocably constitute and appoint Attorney, to transfer the within Rights Certificate on the books of the within-named Company, with full power of substitution. 

Dated:
                         
 Signature:                          

Signature Guaranteed: 
 Certificate 

The undersigned hereby certifies by checking the appropriate boxes that: 
 (1) this Rights Certificate [        ] is [        ] is not being sold, assigned and transferred by or on behalf of a Person
who is or was an Acquiring Person or an Affiliate or Associate of any such Acquiring Person (as such terms are defined pursuant to the Rights Agreement); 
 (2) after due inquiry and to the best knowledge of the undersigned, it [        ] did [        ] did not acquire the Rights
evidenced by this Rights Certificate from any Person who is, was or subsequently became an Acquiring Person or an Affiliate or Associate of an Acquiring Person. 
 Dated:                          

Signature:
                         
 Signature Guaranteed: 
 NOTICE 

The signature to the foregoing Assignment and Certificate must correspond to the name as written upon the face of this Rights Certificate
in every particular, without alteration or enlargement or any change whatsoever. 

  
 Exhibit B -
Page 4 

 FORM OF ELECTION TO PURCHASE 

(To be executed if holder desires to exercise Rights represented by the Rights Certificate.) 

 

	To:	VONAGE HOLDINGS CORP.: 

 The
undersigned hereby irrevocably elects to exercise                          Rights represented by this Rights Certificate
to purchase the shares of Preferred Stock issuable upon the exercise of the Rights (or such other securities of the Company or of any other person which may be issuable upon the exercise of the Rights) and requests that certificates for such shares
be issued in the name of and delivered to: 
 Please insert social security 
 or other identifying number                          

 

					
	(Please print name and address):	  	 	  	
			
		  	 	  	
			
		  	 	  	

 If such number of Rights shall not be all the Rights evidenced by this Rights Certificate, a new Rights
Certificate for the balance of such Rights shall be registered in the name of and delivered to: 
 Please insert social security 

or other identifying number 
  

							
	(Please print name and address):	 	 	  	
			
		 	 	  	
			
		 	 	  	
				
		 	Dated:	  	 	  	
				
		 	Signature:	  	 	  	

 Signature Guaranteed: 
 Certificate 
 The undersigned hereby certifies by checking the appropriate boxes
that: 
 (1) the Rights evidenced by this Rights Certificate [        ] are
[        ] are not being exercised by or on behalf of a Person who is or was an Acquiring Person or an Affiliate or Associate of any such Acquiring Person (as such terms are defined pursuant to the Rights
Agreement); 

  
 Exhibit B -
Page 5 

 (2) after due inquiry and to the best knowledge of the undersigned, it
[        ] did [        ] did not acquire the Rights evidenced by this Rights Certificate from any Person who is, was or became an Acquiring Person or an Affiliate or
Associate of an Acquiring Person. 
 (3) to the best knowledge of the undersigned, exercise of the Rights evidenced by the
Rights Certificate [        ] will result [        ] will not result in it, together with its Affiliates and Associates, becoming the Beneficial Owner of more than 4.9%
of the total number of shares of Stock then-outstanding (treating all shares of Stock as a single class). 
  

			
		
	Dated:	 	 

  

			
	Signature: 	 	 

 Signature Guaranteed: 
 NOTICE 
 The signature to the foregoing Election to Purchase and Certificate must
correspond to the name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever. 

  
 Exhibit B -
Page 6 

 Exhibit C 
 SUMMARY OF RIGHTS TO PURCHASE SERIES A PARTICIPATING PREFERRED STOCK 
 AS
SET FORTH IN THE RIGHTS AGREEMENT, RIGHTS ISSUED OR TRANSFERRED TO, OR BENEFICIALLY OWNED BY, ANY PERSON WHO IS, WAS OR BECOMES AN ACQUIRING PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT), WHETHER CURRENTLY BENEFICIALLY OWNED BY OR ON
BEHALF OF SUCH PERSON OR BY ANY SUBSEQUENT HOLDER, MAY BE NULL AND VOID. 
 SUMMARY OF TERMS 

TAX BENEFITS PRESERVATION PLAN 
  

			
		
	 Purpose
	  	The purpose of the Tax Benefits Preservation Plan (“Rights Agreement”) described in this summary of terms is to preserve the value of the deferred tax assets (“Tax
Benefits”) of Vonage Holdings Corp. (“Vonage”) for U.S. federal income tax purposes.
		
	 Form of Security
	  	The Board will declare a dividend of one preferred stock purchase right for each outstanding share of common stock, par value $0.001 per share, of the Company (“Common
Stock”), payable to holders of record as of the close of business on June 18, 2012 (each a “Right” and collectively, the “Rights”).
		
	 Exercise
	  	Prior to the “Distribution Date,” as discussed below, the Rights are not exercisable. After the Distribution Date, each Right is exercisable to purchase, for $10.00
(the “Purchase Price”), one one-thousandth of a share of Series A Participating Preferred Stock, $0.001 par value per share, of Vonage (“Preferred Stock”), subject to adjustment in accordance with the terms of the Rights
Agreement.
		
	 Distribution Date
	  	Initially, the Rights will be attached to all Common Stock certificates representing shares then outstanding, and no separate Rights certificates will be distributed. On or after
the Distribution Date, subject to certain exceptions specified in the Rights Agreement, the Rights will separate from the Common Stock. The Distribution Date will occur upon the earlier of (i) ten (10) business days following the date of a
public announcement that a person or group of affiliated or associated persons (an “Acquiring Person”) has acquired, or obtained the right to acquire, beneficial ownership of 4.9% or more of the outstanding shares of Common Stock or such
earlier date on which a majority of the Board of Directors becomes aware of the existence of an Acquiring Person (such date being the “Stock Acquisition Date”) or (ii) ten (10) business days (or
such

  
 Exhibit C -
Page 1 

			
		  	 later time as the Board of Directors may determine) following the commencement of a tender offer or exchange offer that would result
in a person becoming an Acquiring Person.
  
 An Acquiring Person would not
include, among others: (i) Vonage or any of its subsidiaries; (ii) employee benefit plans and persons holding shares of Common Stock on behalf of such plans; (iii) existing 4.9% stockholders (unless they increase their percentage stock
ownership); (iv) persons or groups who, in the Board’s view, have inadvertently become 4.9% stockholders, unless and until such person or group shall have failed to divest, as soon as practicable, sufficient shares of Common Stock such that
they would no longer be a 4.9% stockholder (upon terms or conditions satisfactory to the Board); (v) an “investment advisor” to mutual funds or trustees of certain qualified trusts if immediately after any increase in Beneficial Ownership
of Common Stock by such Person (A) no single mutual fund or qualified trust advised by such investment advisor or such trustee, respectively, actually owns or beneficially owns 4.9% or more of the shares of Common Stock then outstanding and (B) such
investment advisor or trustee Beneficially Owns (other than with respect to such mutual funds or such trusts, as applicable) less than 4.9% of the shares of Common Stock then outstanding; and (vi) 4.9% stockholders whose acquisitions, in the
Board’s view, would not be inconsistent with the purpose of the Rights Agreement.

		
	Flip-In	  	In the event that any person becomes an Acquiring Person, each holder of a Right will thereafter have the right to receive, upon exercise, Common Stock (or, in certain
circumstances, cash, property or other securities of Vonage), having a value equal to two times the exercise price of the Right. The exercise price is the Purchase Price times the number of units associated with each Right (initially, one).
Notwithstanding any of the foregoing, following the occurrence of an Acquiring Person becoming such (the “Flip-In Event”), all Rights that are, or (under certain circumstances specified in the Rights Agreement) were, beneficially owned by
any Acquiring Person or its Affiliates and Associates and certain transferees thereof will be null and void.
		
	Exchange	  	At any time after the Stock Acquisition Date but before the time the Acquiring Person becomes the beneficial owner of 50% or more of the outstanding shares of Common Stock, the
Board may exchange the Rights (other than Rights beneficially owned by an Acquiring Person or any other Rights that shall be deemed void under the terms of the Rights Agreement), in whole or in part, at an exchange ratio equal to one share of Common
Stock per Right (subject to adjustment).

  
 Exhibit C-
Page 2 

			
	 Redemption
	  	At any time until the close of business on the tenth day following the Stock Acquisition Date, Vonage may redeem the Rights in whole, but not in part, at a price of $0.001 per
Right. Immediately upon the action of the Board of Directors ordering redemption of the Rights (or at the effective time of such redemption designated by the Board), the Rights will terminate and the only right of the holders of Rights will be to
receive the $0.001 redemption price.
		
	 Expiration
	  	The Rights will expire on the earliest of (i) the time at which the Rights are redeemed pursuant to the Rights Agreement, (ii) the time at which the Rights (other than Rights
owned by an Acquiring Person) are exchanged pursuant to the Rights Agreement, (iii) the repeal of Section 382 of the Code or any successor statute if the Board determines that the Rights Agreement is no longer necessary or desirable for the
preservation of certain tax benefits, (iv) the close of business on the first day of a taxable year of the Company to which the Board determines that no tax benefits may be carried forward, (v) the close of business on June 7, 2013, provided that,
prior to such date, the Board of Directors may determine to extend the Rights Agreement to a date not later than the close of business on the third anniversary of the date of the Rights Agreement as long as such extension is submitted to the
stockholders of the Company for ratification at the 2013 Annual Meeting of Stockholders, or (vi) the first business day after the date on which the Inspectors of Election for the Company’s 2013 Annual Meeting of Stockholders certify that the
Rights Agreement has not been approved by stockholders at that meeting.
		
	 Amendments
	  	Any of the provisions of the Rights Agreement may be amended by the Board for so long as the Rights are redeemable (other than changes to the redemption price, which may not be
amended). After the time that the Rights are redeemable, the provisions of the Rights Agreement may be amended by the Board provided that no such amendment may (i) adversely affect the interests of the holders of the Rights, (ii) cause the Rights
Agreement to again become amendable or (iii) cause the Rights to again become redeemable.
		
	 Stockholder Rights
	  	Until a Right is exercised, the holder thereof, as such, will have no rights as a Vonage stockholder, including, without limitation, the right to vote or to receive dividends.
While the distribution of the Rights will not be taxable to stockholders or to Vonage, stockholders may, depending upon the circumstances, recognize taxable income in the event that the Rights become exercisable for Common Stock (or other
consideration) as set forth above or in the event the Rights are redeemed.

  
 Exhibit C-
Page 3 

			
	Antidilution Provisions	  	The Purchase Price payable, and the number of units of Preferred Stock or other securities or property issuable, upon exercise of the Rights are subject to adjustment from time
to time to prevent dilution (i) in the event of a stock dividend on, or a subdivision, combination or reclassification of, the Preferred Stock, (ii) if holders of the Preferred Stock are granted certain rights or warrants to subscribe for Preferred
Stock or convertible securities at less than the current market price of the Preferred Stock, or (iii) upon the distribution to holders of the Preferred Stock of evidences of indebtedness or assets (excluding regular quarterly cash dividends) or of
subscription rights or warrants (other than those referred to above).
	
	A copy of the Rights Agreement has been filed with the Securities and Exchange Commission as an Exhibit to a Registration Statement on Form 8-A. A copy of the Rights
Agreement is available free of charge from Vonage. This summary description of the Rights does not purport to be complete and is qualified in its entirety by reference to the Rights Agreement, as amended from time to time, the complete terms of
which are hereby incorporated by reference.

  
 Exhibit C -
Page 4Certificate of Limited Partnership for MDS Energy Public 2012-A LP

 Exhibit 4.1 

CERTIFICATE OF LIMITED PARTNERSHIP 
 FOR 
 MDS ENERGY PUBLIC 2012-A LP 

 State of Delaware 

Secretary of State 
 Division of Corporations 
 Delivered 02:26 PM 05/01/2012 

FILED 02:26 PM 05/01/2012 
 SRV 120495075—5148280 FILE 
 STATE OF DELAWARE 

CERTIFICATE OF LIMITED PARTNERSHIP 
  

	 	•	 	 The Undersigned, desiring to form a limited partnership pursuant to the Delaware Revised Uniform Limited Partnership Act, 6 Delaware Code,
Chapter 17, do hereby certify as follows: 

  

	 	•	 	 First: The name of the limited partnership is MDS Energy Public 2012-A LP. 

 

	 	•	 	 Second: The address of its registered office in the State of Delaware is 1220 North Market Street, Suite 806 in the city of Wilmington. Zip code
19801. The name of the Registered Agent at such address is Registered Agents Legal Services, LLC. 

  

	 	•	 	 Third: The name and mailing address of each general partners is as follows: 

 

	
	MDS Energy Development,
LLC
	409 Butler Road, Suite A
	Kittanning, PA 16201

 In Witness Whereof, the undersigned has executed this Certificate of Limited
Partnership as of the 1st day of May, A.D. 2012.

  

			
	MDS Energy Development, LLC
		
	By:	 	 /s/ Michael D. Snyder

General Partner(s)

			
		
	Name:	 	 Michael D. Snyder.

		 	 Print or Type
 Authorized Person of Managing General Partner

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