Document:

EXHIBIT 10.19

 Exhibit 10.19 
 SERIES A UNIT SUBSCRIPTION AGREEMENT 
 THIS SUBSCRIPTION AGREEMENT, dated
as of April 29, 2011 (this “Agreement”), is made and entered into by and between the undersigned (“Subscriber”) and Nexeo Solutions Holdings, LLC, a Delaware limited liability company (the
“Company”). 
 RECITALS 
 WHEREAS, Subscriber understands that the Company is offering for sale to Subscriber 50,000 Series A Units (the “Units”) of the Company on the terms and conditions set forth in this
Agreement and subject to the provisions set forth in the Company’s Amended and Restated Limited Liability Company Agreement, dated April 1, 2010 (the “LLC Agreement”), and Subscriber further understands that the
offering is being made without registration of the Units issuable at the Closing (as defined below) under the Securities Act of 1933, as amended (the “Securities Act”); 

WHEREAS, the Company desires to issue to Subscriber, and Subscriber desires to purchase from the Company, the Units in accordance with
the terms of this Agreement; and 
 WHEREAS, Capitalized terms used but not otherwise defined herein shall have the meanings
ascribed to them in the LLC Agreement. 
 ARTICLE 1 

SUBSCRIPTION AND SALE 
 1.01 Subscription. Subject to the terms and conditions of this Agreement, (a) Subscriber hereby irrevocably subscribes for the Units at a per Unit price of $1.00 for an aggregate
purchase price of $50,000.00 in cash (the “Purchase Price”) and (b) the Company irrevocably agrees to issue and sell to Subscriber the Units for the foregoing consideration. 

1.02 The Closing. The closing of the purchase and sale of the Units (the “Closing”) shall
take place at the principal office of the Company (or at such other place as the parties may mutually determine), at 10:00 a.m. on the date hereof or such other date as the parties may mutually determine. 

1.03 Payment for Units. Payment for the Units shall be received by the Company from Subscriber at the Closing.

 ARTICLE 2 
 REPRESENTATIONS AND WARRANTIES 
 OF SUBSCRIBER 

Subscriber hereby represents and warrants to the Company and to each officer, director and agent of the Company as follows: 

2.01 Authority. Subscriber has full power and authority to execute and deliver this Agreement and to perform its
obligations hereunder, and the execution, delivery and performance by Subscriber of this Agreement has been duly authorized by all necessary action. 

  
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 2.02 Binding Obligations. This Agreement has been duly and validly
executed and delivered by Subscriber and constitutes, or shall constitute, the binding obligation of Subscriber enforceable against Subscriber in accordance with its terms, subject to Creditors’ Rights. 

2.03 No Conflict. The execution, delivery and performance by Subscriber of this Agreement will not, with or without
the giving of notice or the passage of time, or both, (i) violate any provision of Law to which Subscriber is subject, (ii) violate any order, judgment or decree applicable to Subscriber, or (iii) conflict with, or result in a breach
or default under any instrument to which Subscriber is a party or by which any property of Subscriber is otherwise bound or subject, except where such conflict, breach or default would not reasonably be expected to, individually or in the aggregate,
prevent or materially delay the consummation of the transactions contemplated by this Agreement or to materially impair Subscriber’s ability to perform its obligations under the this Agreement or the LLC Agreement. 

2.04 Investment Entirely For Own Account. The Units acquired or to be acquired by Subscriber will be acquired for
investment for Subscriber’s own account, not as a nominee or agent, and not with a view to the resale or distribution of any part thereof; Subscriber has no present intention of selling, granting any participation in, or otherwise distributing
the same; and Subscriber does not have any contract, undertaking, agreement or arrangement with any Person to sell, transfer or grant participations to such Person or to any third Person, with respect to any of the Units. 

2.05 Unregistered Securities. Subscriber understands that the Units, at the time of issuance, will not be registered
under the Securities Act or other applicable federal or state securities laws and the rules and regulations promulgated thereunder. Subscriber also understands that the Units are being offered and sold pursuant to an exemption from registration
contained in the Securities Act based in part upon Subscriber’s representations contained in this Agreement. 
 2.06
Accredited Investor; Investment Experience. Subscriber is (a) an “accredited investor” as defined in Rule 501(a) under Regulation D of the Securities Act, a copy of which is attached hereto as Annex A.
Subscriber acknowledges that Subscriber is familiar with the business and financial condition, properties, operations and prospects of the Company, including the Sponsor’s ownership of a substantial amount of the issued and outstanding Units of
the Company and the Sponsor’s rights set forth in the LLC Agreement, and Subscriber has made all investigations which it deems necessary or desirable for deciding whether to invest in the Units. Subscriber has such knowledge and experience in
financial and business matters that Subscriber is capable of evaluating the merits and risks of an investment in the Units and of making an informed investment decision with respect to the purchase thereof and understands that (i) this
investment is suitable only for an investor which is able to bear the economic consequences of losing such investor’s entire investment, (ii) the acquisition of the Units hereunder is a speculative investment which involves a high degree
of risk of loss, which could include the loss of the Subscriber’s entire investment, and (iii) there are substantial restrictions on the transferability of, and there will be no public market for, the Units, and accordingly, it may not be
possible for Subscriber to liquidate Subscriber’s investment in case of emergency. 

  
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 2.07 Restricted Securities. Subscriber understands that the Units to be
acquired by Subscriber may not be sold, transferred or otherwise disposed of without registration under the Securities Act or an exemption therefrom, and that in the absence of either an effective registration statement covering the Units or an
available exemption from registration under the Securities Act, the Units must be held indefinitely. Subscriber understands that the Company has no present intention of registering the Units to be acquired by Subscriber. Subscriber also understands
that there is no assurance that any exemption from registration under the Securities Act will be available and that, even if available, such exemption may not allow Subscriber to transfer all or any portion of the Units to be acquired by it under
the circumstances, in the amounts or at the times Subscriber might propose. In particular, Subscriber is aware that the Units may not be sold pursuant to Rule 144 promulgated under the Securities Act unless all of the conditions of Rule 144 are met.
Among the conditions for use of Rule 144 may be availability of current information to the public about the Company. Such information is not now available and the Company has no plans to make such information available. 

2.08 Taxes. Subscriber has reviewed with its own Tax advisors the federal, state and local and the other Tax
consequences of an investment in Units and the transactions contemplated by this Agreement. Subscriber acknowledges and agrees that the Company is making no representation or warranty as to the federal, state, local or foreign Tax consequences to
Subscriber as a result of Subscriber’s acquisition of the Units or the transactions contemplated by this Agreement. Subscriber understands that it shall be responsible for its own Tax liability that may arise as result of Subscriber’s
acquisition of the Units. 
 ARTICLE 3 
 REPRESENTATIONS AND WARRANTIES 
 OF THE COMPANY 

The Company hereby represents and warrants to Subscriber as follows: 

3.01 Organization, Standing and Power. The Company is duly organized, validly existing and in good standing under
the laws of its state of organization, with full power and authority to conduct its business as it is currently being conducted and to own its assets and to consummate the transactions contemplated by this Agreement; and has secured any other
authorizations, approvals, permits and orders required by law for the conduct by the Company of its business as it is currently being conducted and to consummate the transactions contemplated by this Agreement. 

3.02 Authority. The Company has duly authorized the issuance and sale of the Units upon the terms of their offer by
all requisite action and has all requisite power and authority to enter into this Agreement and to consummate the transactions contemplated hereby. 
 3.03 Valid Issuance; No Conflicts. The Units, when paid for and delivered to Subscriber in accordance with the terms of this Agreement, will constitute validly authorized, duly issued
Units, and the issuance thereof will not conflict with the organizational documents of the Company, as amended to date, nor with any outstanding warrants, option, call, preemptive right or commitment of any type relating to the Company’s
capital stock. 

  
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 ARTICLE 4 
 CLOSING CONDITIONS 
 4.01 Conditions to the Obligations of
Subscriber and the Company. The obligations of Subscriber to purchase and pay for the Units and of the Company to sell such Units are subject to the satisfaction at or prior to the Closing of the following conditions precedent: 

(a) The representations and warranties of Subscriber contained in Article 2 hereof and the Company contained in Article 3 hereof shall be
true and correct on and as of the Closing in all material respects with the same effect as though such representations and warranties had been made on and as of the Closing; and 

(b) No preliminary or permanent injunction or other order issued by any federal or state court of competent jurisdiction in the United
States or by any United States federal or state governmental or regulatory body nor any statute, rule, regulation or executive order promulgated or enacted by any United States federal or state governmental authority which restrains, enjoins or
otherwise prohibits the transactions contemplated hereby shall be in effect. 
 4.02 Conditions to the Obligations
of the Company. The obligations of the Company to sell the Units are subject to satisfaction at or prior to Closing of the following additional conditions: 
 (a) Subscriber shall have delivered to the Company the Purchase Price set forth in Section 1.01; and 
 (b) Subscriber shall have delivered to the Company an executed counterpart to the LLC Agreement. 
 ARTICLE 5 
 FURTHER AGREEMENTS OF 

SUBSCRIBER AND THE COMPANY 
 5.01 Survival of Representations and Warranties. Unless Subscriber notifies the Company in writing to the contrary, all representations and warranties made by Subscriber in this
Agreement shall be deemed to have been reaffirmed and confirmed as of the Closing, taking into account all information received by Subscriber. All representations and warranties made by Subscriber shall be considered to have been relied upon by the
Company and shall survive the execution and delivery of this Agreement until the expiration of the applicable statutes of limitations regardless of any investigation made by or on behalf of the Company. 

5.02 LLC Agreement. Subscriber acknowledges that it has received and reviewed a copy of the LLC Agreement and
further acknowledges and agrees that the Units shall be subject to the terms and conditions of the LLC Agreement, including the restrictions on transfer of the Units set forth therein. 

  
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 ARTICLE 6 
 MISCELLANEOUS 
 6.01 Assignment. Except as otherwise
expressly set forth in this Agreement, neither this Agreement nor any right, remedy, obligation or liability arising hereunder or by reason hereof shall be assignable by either the Company or Subscriber without the prior written consent of the other
party. 
 6.02 Amendments and Waivers. This Agreement may be amended, modified or terminated, and the
observance of any term of this Agreement may be waived (either generally or in a particular instance and either retroactively or prospectively), only by a written instrument executed by each of the parties hereto. 

6.03 Notices. All notices and other communications given or made pursuant hereto shall be in
writing and shall be deemed to have been duly given upon receipt, if delivered personally or mailed by nationally recognized overnight courier service or registered or certified mail (postage prepaid, return receipt requested) or electronic
transmission by email transmission or facsimile to Subscriber at the address set forth below its signature on the signature page hereto and: 
  

			
	 If to the Company, to:

	
	 Nexeo Solutions Holdings, LLC

	 5200 Blazer Parkway

	 Dublin, Ohio 43017

	Attn:	  	Chief Executive Officer
	Phone:	  	(614) 790-6469
	Facsimile:	  	(859) 357-5546

 Or, in each case, at such other address for a party as shall be specified by like changes of address. 

6.04 Headings. Headings contained in this Agreement are inserted only as a matter of convenience and in no way
define, limit or extend the scope or intent of this Agreement or any provisions hereof. 
 6.05 Governing
Law. This Agreement shall be governed and construed in accordance with the laws of the State of Delaware, without regard to any applicable conflicts of law principles thereof. 

6.06 Entire Agreement. This Agreement constitutes the entire agreement and supersedes all prior agreements and
understandings, both written and oral, among the parties with respect to the subject matter hereof. 
 6.07 Further
Assurances. In connection with this Agreement and the transactions contemplated hereby, each of the Company and Subscriber shall execute and deliver any additional documents and instruments and perform any additional acts that may be
necessary or appropriate to effectuate and perform the provisions of this Agreement and those transactions. 

  
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 6.08 Number; Gender; Without Limitation. Pronouns, wherever used in
this Agreement, and of whatever gender, shall include persons of every kind and character, and the singular shall include the plural whenever and as often as may be appropriate. Any reference herein to “including” and words of similar
import refer to “including without limitation.” 
 6.09 Severability. Any
term or provision of this Agreement which is invalid or unenforceable in any jurisdiction shall, as to that jurisdiction, be ineffective to the extent of such invalidity or unenforceability without rendering invalid or unenforceable the remaining
terms and provisions of this Agreement or affecting the validity or enforceability of any of the terms or provisions of this Agreement in any other jurisdiction. If any provision of this Agreement is deemed to be so broad as to be unenforceable, the
provision shall be interpreted to be only so broad as is enforceable. 
 6.10 Counterparts. This Agreement
may be executed in any number of counterparts, including facsimile counterparts, with the same effect as if all signing parties had signed the same document. All counterparts shall be construed together and constitute the same instrument.

 Signature page follows. 

  
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 IN WITNESS WHEREOF, the Company and Subscriber have executed this Agreement as of the date
first set forth above. 
  

			
	NEXEO SOLUTIONS HOLDINGS, LLC
		
	By:	 	 /s/ Michael B. Farnell, Jr.

	Name:	 	Michael B. Farnell, Jr.
	Title:	 	Vice President
	
	SUBSCRIBER:
	
	 /s/ Michael J. Smith

	Name:	 	Michael J. Smith
	
	Address for Notice:
	59 W Majestic Woods Place
	The Woodlands, TX 77382

 SIGNATURE PAGE TO 

SUBSCRIPTION AGREEMENT 

 Annex A 

 

	Rule 501.	Definitions and Terms Used in Regulation D. 

 As used in Regulation D, the following terms have the meaning indicated: 
 (a)
Accredited Investor. “Accredited investor” shall mean any person who comes within any of the following categories, or who the issuer reasonably believes comes within any of the following categories, at the time
of the sale of the securities to that person: 
  

	 	(1)	Any bank as defined in section 3(a)(2) of the Securities Act of 1933 (the “Act”) or any savings and loan association or other institution as
defined in Section 3(a)(5)(A) of the Act whether acting in its individual or fiduciary capacity; any broker dealer registered pursuant to Section 15 of the Securities Exchange Act of 1934; insurance company as defined in Section 2(13)
of the Act; investment company registered under the Investment Company Act of 1940 or a business development company as defined in Section 2(a)(48) of that Act; Small Business Investment Company licensed by the U.S. Small Business
Administration under Section 301(c) or (d) of the Small Business Investment Act of 1958; employee benefit plan within the meaning of Title I of the Employee Retirement Income Security Act of 1974, if the investment decision is made by a
plan fiduciary, as defined in Section 3(21) of such Act, which is either a bank, savings and loan association, insurance company, or registered investment adviser, or if the employee benefit plan has total assets in excess of $5,000,000; or, if
a self-directed plan, with investment decisions made solely by persons that are accredited investors; 

  

	 	(2)	Any private business development company as defined in Section 202(a)(22) of the Investment Advisers Act of 1940; 

 

	 	(3)	Any organization described in Section 501(c)(3) of the Internal Revenue Code, corporation, Massachusetts or similar business trust, or partnership, not formed for
the specific purpose of acquiring the securities offered, with total assets in excess of $5,000,000; 

  

	 	(4)	Any director, executive officer, or general partner of the issuer of the securities being offered or sold, or any director, executive officer, or general partner of a
general partner of that issuer; 

  

	 	(5)	Any natural person whose individual net worth, or joint net worth with that person’s spouse, at the time of his/her purchase exceeds $1,000,000;

  

	 	(6)	Any natural person who had an individual income in excess of $200,000 in each of the two most recent years or joint income with that person’s spouse in excess of
$300,000 in each of those years and has a reasonable expectation of reaching the same income level in the current year; 

  

	 	(7)	Any trust with total assets in excess of $5,000,000, not formed for the specific purpose of acquiring the securities offered, whose purchase is directed by a
sophisticated person as described in Rule 506(b)(2)(ii); and 

  

	 	(8)	Any entity in which all of the equity owners are accredited investors. 

 ANNEX A TO 
 SUBSCRIPTION
AGREEMENTForm of Market Stock Unit

 Exhibit 10.1 
 BROCADE COMMUNICATIONS SYSTEMS, INC. 
 2009 STOCK PLAN 

RESTRICTED STOCK UNIT AGREEMENT 
 (2012 MARKET STOCK UNITS) 
 NOTICE OF GRANT 

[%%FIRST_NAME%-% %%MIDDLE_NAME%-% %%LAST_NAME%-%] 
 You (“Grantee”) have been granted an award of market performance-based Restricted Stock Units under the Company’s 2009 Stock Plan (the “Plan”). The date of this
Restricted Stock Unit Agreement (the “Agreement”) is the Grant Date defined below. Subject to the provisions of Appendix A and the Plan, which are attached hereto and incorporated herein in their entirety, the principal
features of this award are as follows: 
  

	 Grant Date: 
	[            ] (the “Grant Date”) 

 

	 Baseline Number of Restricted Stock Units: 
	[            ] (the “Baseline Number of Restricted Stock Units”) 

 

	 Maximum Number of Restricted Stock Units: 
	[To be calculated as 150% of the Baseline Number of Restricted Stock Units] (the “Maximum Number of Restricted Stock Units”)

  

	 Performance Period: 
	October 30, 2011 through October 26, 2013 (subject to Section 4(c) of Appendix A) (the “Performance Period”). 

 

	 Performance Matrix:  
	The number of Restricted Stock Units in which you may vest in accordance with the Vesting Schedule will depend upon the Company’s Stock Price Performance as compared to the NASDAQ Telecom
Stock Price Performance for the Performance Period and will be determined in accordance with Section 1 of Appendix A. 

  

	 Vesting Schedule: 
	Subject to Section 4 of Appendix A and the terms of the Plan, the Grantee will vest as to fifty percent (50%) of the Calculated RSUs (as defined in Appendix A) at the close of
business on the last day of the Performance Period (the “First Vesting Date”). To the extent that the number of Calculated RSUs is less than the Maximum Number of Restricted Stock Units, the difference between the Maximum Number of
Restricted Stock Units and the actual number of Calculated RSUs shall be immediately forfeited. 

  

	 	Subject to Section 4 of Appendix A and the terms of the Plan, the Grantee will vest as to the remaining fifty percent (50%) of the Calculated RSUs at the
close of business on the one year anniversary of the last day of the Performance Period (the “Second Vesting Date,” and each of the First Vesting Date and the Second Vesting Date, a “Vesting Date”).

  
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	 	Notwithstanding the foregoing and except as otherwise provided in Appendix A, the Grantee will not vest in the Restricted Stock Units, even if they are Calculated RSUs,
unless he or she remains a Service Provider through the applicable Vesting Date. 

 Your acceptance online indicates your
agreement and understanding that this award is subject to all of the terms and conditions contained in Appendix A and the Plan. For example, important additional information on vesting and forfeiture of the Restricted Stock Units is contained
in Sections 3 through 5 and Section 7 of Appendix A. PLEASE BE SURE TO READ ALL OF APPENDIX A AND THE PLAN, WHICH CONTAIN THE SPECIFIC TERMS AND CONDITIONS OF THIS AWARD. 

 

					
	 BROCADE COMMUNICATIONS SYSTEMS, INC.
	 		 	GRANTEE
			
	  
	 		 	  

	 Signature
	 		 	Signature
			
	  
	 		 	  

	 Print Name
	 		 	Print Name
			
	  
	 		 	
	 Title
	 		 	

  
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 APPENDIX A 
 TERMS AND CONDITIONS OF RESTRICTED STOCK UNITS 
 (2012 MARKET STOCK UNITS)

 Unless otherwise defined herein, capitalized terms used herein shall have the meanings ascribed to them in the Plan.

 1. Grant. 
 (a) The Company hereby grants to the Grantee under the Plan an award of the Baseline Number of Restricted Stock Units set forth on the Notice of Grant, subject to adjustment for performance and vesting
requirements in accordance with the Notice of Grant and this Appendix A and all of the terms and conditions in this Agreement and the Plan. For each Restricted Stock Unit that vests, the Grantee will be entitled to receive one (1) Share
(subject to automatic adjustment for stock splits, combinations and other adjustments contemplated in the Plan). 
 (b) The
number of Restricted Stock Units in which the Grantee may vest in accordance with the Vesting Schedule will depend upon the Company’s Stock Price Performance as compared to the NASDAQ Telecom Stock Price Performance for the Performance Period
and will be determined following the end of the Performance Period as follows: 
 (i) Performance Calculation. 

(a) The “Company’s Stock Price Performance” means the percentage increase or decrease in the
average closing price per share of the Company’s Common Stock for (i) the last sixty (60) market trading days in the Performance Period, over (ii) the sixty (60) market trading day period beginning on the thirtieth
(30th) market trading day prior to the first day of
the Performance Period and ending on the thirtieth
(30th) market trading day following (and including)
the first day of the Performance Period. The Company’s share price shall also be adjusted to reflect the reinvestment of any dividends issued by the Company during the Performance Period. 

(b) The “NASDAQ Telecom Stock Price Performance” means the percentage increase or decrease in the
total return (change in share price plus reinvestment of any dividends) of a share of the NASDAQ Telecommunications Index, ticker symbol “IXTC,” (or any successor fund) for (i) the last sixty (60) market trading days in the
Performance Period, over (ii) the sixty (60) market trading day period beginning on the thirtieth
(30th) market trading day prior to the first day of
the Performance Period and ending on the thirtieth
(30th) market trading day following (and including)
the first day of the Performance Period. 
 (c) The Company’s Stock Price Performance will be compared against the NASDAQ
Telecom Stock Price Performance (each expressed as a growth rate percentage as of the beginning of the Performance Period) to result in the growth rate difference (the “Growth Rate Delta”) equal to the Company’s Stock Price
Performance minus the NASDAQ Telecom Stock Price Performance. 

  
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 (ii) RSU Calculation. 

(a) If the Growth Rate Delta is equal to zero percent (0%), the number of Restricted Stock Units that will be eligible to vest (the
“Calculated RSUs”) will equal the Baseline Number of Restricted Stock Units; and 
 (b) If
the Growth Rate Delta is greater or less than zero percent (0%), the number of Restricted Stock Units that will be Calculated RSUs will be equal to: (i) the Baseline Number of Restricted Stock Units, multiplied by (ii) the sum of
(A) 100% plus (B) one and  1/2
(1.5) times the Growth Rate Delta; provided, however, that in no event will more than the Maximum Number of Restricted Stock Units become Calculated RSUs or will the number of Calculated RSUs go below zero. 

(iii) Examples (for illustration purposes only). 
 (a) Example #1: If the Growth Rate Delta was 20%, then 130% (equal to 100% plus (1.5 times 20%)) of the Baseline Number of Restricted Stock Units would be Calculated RSUs. 

(b) Example #2: If the Growth Rate Delta was -20%, then 70% (equal to 100% plus (1.5 times -20%)) of the Baseline Number of Restricted
Stock Units would be Calculated RSUs. 
 (c) When Shares are paid to the Grantee in payment for the Restricted Stock Units, par
value ($.001 per share) will be deemed paid by the Grantee for each Restricted Stock Unit by services rendered by the Grantee, and will be subject to the appropriate tax withholdings in accordance with Section 9 below. 

2. Company’s Obligation to Pay. Each Restricted Stock Unit has a value equal to the Fair Market Value of a Share on the date
that the Restricted Stock Unit is granted. Unless and until the Restricted Stock Units have vested in the manner set forth in Sections 3 through 5, the Grantee will have no right to payment of such Restricted Stock Units. Prior to actual
payment of Shares upon the vesting of any Restricted Stock Units, such Restricted Stock Units will represent an unsecured obligation. Payment of any vested Restricted Stock Units shall be made in whole Shares only and any fractional Shares will be
forfeited at the time of payment. 
 3. Vesting Schedule/Period of Restriction. Except as provided in Sections 4 and 5
and subject to Section 7, the Restricted Stock Units awarded by this Agreement shall vest in accordance with the vesting provisions set forth on the Notice of Grant. Restricted Stock Units shall not vest in accordance with any of the provisions
of this Agreement unless the Grantee shall have been continuously employed by the Company or by its Parent or other successor or a Subsidiary from the Grant Date through the dates the Restricted Stock Units are otherwise scheduled to vest.

 4. Modifications to Vesting Schedule. 
 (a) Vesting upon Leave of Absence. In the event that the Grantee takes an authorized leave of absence (“LOA”), the Restricted Stock Units awarded by this Agreement that

  
 A-2

 
are eligible to be earned shall either: (i) not be affected, or (ii) shall be deferred for a period of time equal to the duration of such LOA, based on the Company’s LOA policy in
effect at such time as determined by the Company in its sole discretion. 
 (b) Death or Disability of Grantee. In the
event that the Grantee’s relationship with the Company or its Parent or other successor or a Subsidiary as a Service Provider is terminated prior to full vesting of the Restricted Stock Units due to his or her death or Disability, the unvested
portion of the Restricted Stock Units subject to this Restricted Stock Unit Award shall be forfeited on the date of the Grantee’s death or Disability, unless otherwise determined by the Administrator. 

(c) Change in Control. In the event of a Change in Control, the Performance Period shall be deemed to end upon the closing of the
Change in Control for purposes of determining the Company’s Stock Price Performance and the NASDAQ Telecom Stock Price Performance and the number of Restricted Stock Units that are Calculated RSUs will be determined in accordance with the
Performance Matrix and Section 1 of this Appendix A. The Grantee shall vest in the number of Calculated RSUs determined based on the preceding sentence as follows: fifty percent (50%) of the Calculated RSUs will vest immediately prior to
and contingent upon the Change in Control (the “New First Vesting Date”) and the remaining fifty percent (50%) of the Calculated RSUs will vest on the one-year anniversary of the closing of the Change in Control (the
“New Second Vesting Date,” and each of the New First Vesting Date and the New Second Vesting Date, a “New Vesting Date”), and provided that the Grantee remains a Service Provider through such New Vesting Date or as
otherwise set forth in this Agreement, in each case unless vested earlier in accordance with the terms of this Award, Section 18 of the Plan, any Change of Control and Retention Agreement between Grantee and the Company or any employment or
other change in control agreement by and between the Company and the Grantee. In accordance with Section 1 of this Appendix A, the Administrator shall not be entitled to eliminate or reduce the number of Calculated RSUs determined in accordance
with Section 1 of Appendix A following a Change in Control. 
 5. Administrator Discretion. The Administrator, in
its discretion, may accelerate the vesting of the balance, or some lesser portion of the balance, of the Restricted Stock Units at any time, subject to the terms of the Plan. Such acceleration may result in tax or other consequences to the Grantee.
If so accelerated, such Restricted Stock Units will be considered as having vested as of the date specified by the Administrator. If the Administrator, in its discretion, accelerates the vesting of the balance, or some lesser portion of the balance,
of the Restricted Stock Units, the payment of such accelerated Restricted Stock Units nevertheless shall be made at the same time or times as if such Restricted Stock Units had vested in accordance with the vesting schedule set forth on the Notice
of Grant and Section 1 or Section 4 of this Agreement, as applicable, or as otherwise provided herein (whether or not the Grantee remains employed by the Company or by one of its Subsidiaries as of such date(s)). The Grantee is hereby
advised to consult with the Grantee’s own personal tax, legal and financial advisors regarding the Grantee’s participation in the Plan before taking any action related to the Plan. 

6. Payment after Vesting. Any Restricted Stock Units that vest in accordance with this Agreement will be paid to the Grantee (or
in the event of the Grantee’s death, to his or her estate) as soon as practicable following the applicable Vesting Date (or New Vesting Date, as applicable), subject to Sections 9 and 21, but no later than sixty (60) days
following the applicable Vesting Date (or New Vesting Date, as applicable). 

  
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 7. Forfeiture. Except as set forth in Sections 4 or 5 or applicable Change of Control
and Retention Agreement between Grantee and the Company (or successor), the balance of the Restricted Stock Units that have not vested pursuant to Sections 3 through 5 at the time of the termination of the Grantee’s relationship with the
Company as a Service Provider for any or no reason will be forfeited. 
 8. [Reserved] 

9. Withholding of Taxes. 
 (a) General. Regardless of any action the Company and/or the Grantee’s employer (the “Employer”) take with respect to any or all income tax (including U.S. federal,
state, local and/or non-U.S. taxes), social insurance, payroll tax, payment on account or other tax-related withholdings (“Tax-Related Items”), the Grantee acknowledges that the ultimate liability for all Tax-Related Items legally
due by the Grantee is and remains the Grantee’s responsibility and that the Company and/or the Employer (i) make no guarantees or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of the award,
including the grant of the Restricted Stock Units, the vesting of the Restricted Stock Units, the delivery of Shares, the subsequent sale of any Shares received at vesting and the receipt of any dividends; and (ii) do not commit to structure
the terms of the grant or any aspect of the award to reduce or eliminate the Grantee’s liability for Tax-Related Items. 

(b) Payment of Tax-Related Items. The Grantee authorizes the Company and/or the Employer, at its discretion, to satisfy the
obligations with regard to all Tax-Related Items by automatically withholding a portion of the Shares issued as payment for vested Restricted Stock Units that have an aggregate market value sufficient to pay all Tax-Related Items required to be
withheld by the Company and/or the Employer with respect to the vesting of the Restricted Stock Units and issuance of the Shares, unless the Company, in its sole discretion, either requires or otherwise permits the Grantee to make alternate
arrangements satisfactory to the Company for such withholdings in advance of, or concurrently with, the arising of any withholding obligations. The number of Shares withheld pursuant to the prior sentence will be rounded up to the nearest whole
Share, with no refund for any value of the Shares withheld in excess of the tax obligation as a result of such rounding. 
 If
the obligation of Tax-Related Items is satisfied by reducing the number of Shares delivered as described herein, the Grantee is deemed to have been issued the full number of Shares subject to the award of Restricted Stock Units, notwithstanding that
a number of the Shares are held back solely for the purpose of paying the Tax-Related Items due as a result of any aspect of the award. 
 If the foregoing method of withholding is prohibited or insufficient to satisfy all Tax-Related Items required to be withheld by the Company and/or the Employer with respect to the vesting of the
Restricted Stock Units and issuance of the Shares or if the Company, in its discretion, determines not to apply the foregoing method of withholding, then the Grantee hereby authorizes the Company and/or the Employer to satisfy such obligations by
one or a combination of the following: (i) withholding from the Grantee’s wages or other cash compensation paid to the Grantee by the Company and/or the Employer, to the maximum extent permitted by law; or (ii) selling the applicable
number of Shares or arranging for the sale of the applicable number of Shares (in either case on the Grantee’s behalf and at the Grantee’s discretion pursuant to this authorization) issued in settlement of vested Restricted Stock
Units and retaining the requisite proceeds from such sale. 

  
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 Finally, the Grantee shall pay to the Company and/or the Employer any amount of Tax-Related
Items that the Company and/or the Employer may be required to withhold as a result of the Grantee’s participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to deliver to the Grantee any
Shares pursuant to the award if the Grantee fails to comply with the Grantee’s obligations in connection with the Tax-Related Items, as described in this Section 9. 
 10. Rights as Stockholder. Neither the Grantee nor any person claiming under or through the Grantee will have any of the rights or privileges of a stockholder of the Company in respect of any
Shares deliverable hereunder unless and until certificates representing such Shares (which may be in book entry form) will have been issued, recorded on the records of the Company or its transfer agents or registrars, and delivered to the
Grantee (including through electronic delivery to a brokerage account). After such issuance, recordation and delivery, the Grantee will have all the rights of a stockholder of the Company with respect to voting such Shares and receipt of dividends
and distributions on such Shares. 
 11. No Effect on Employment. Subject to any employment contract with the Grantee,
the terms of such employment will be determined from time to time by the Company, or the Subsidiary employing the Grantee, as the case may be, and the Company, or the Subsidiary employing the Grantee, as the case may be, will have the right, which
is hereby expressly reserved, to terminate or change the terms of the employment of the Grantee at any time for any reason whatsoever, with or without good cause. The transactions contemplated hereunder and the vesting schedule set forth on the
first page of this Agreement do not constitute an express or implied promise of continued employment for any period of time. A leave of absence or an interruption in service (including an interruption during military service) authorized or
acknowledged by the Company or the Subsidiary employing the Grantee, as the case may be, shall not be deemed a termination of the Grantee’s relationship with the Company or its Subsidiary as a Service Provider for the purposes of this
Agreement. 
 12. Address for Notices. Any notice to be given to the Company under the terms of this Agreement will be
addressed to the Company, in care of Stock Administrator, at 1745 Technology Drive, San Jose, California, 95110, USA, or at such other address as the Company may hereafter designate in writing, with a copy to the Company, C/O General Counsel, 1745
Technology Drive, San Jose, California, 95110, USA. 
 13. Grant is Not Transferable. Except to the limited extent
provided in this Agreement or the Plan, this grant of Restricted Stock Units and the rights and privileges conferred hereby will not be sold, pledged, assigned, hypothecated, transferred or disposed of any way (whether by operation of law or
otherwise) and will not be subject to sale under execution, attachment or similar process, until the Grantee has been issued Shares in payment of the Restricted Stock Units. Upon any attempt to sell, pledge, assign, hypothecate, transfer or
otherwise dispose of this grant, or any right or privilege conferred hereby, or upon any attempted sale under any execution, attachment or similar process, this grant and the rights and privileges conferred hereby immediately will become null and
void. Notwithstanding the foregoing, Grantee may, in a manner and in accordance with terms specified by the Administrator, transfer these Restricted Stock Units to Grantee’s spouse, former spouse or dependent pursuant to a court-approved
domestic relations order which relates to the provision of child support, alimony payments or marital property rights. 

  
 A-5

 14. Restrictions on Sale of Securities. The Shares issued as payment for vested
Restricted Stock Units under this Agreement will be registered under U.S. federal securities laws and will be freely tradable upon receipt. However, a Grantee’s subsequent sale of the Shares may be subject to any market blackout-period that may
be imposed by the Company and must comply with the Company’s insider trading policies, and any other U.S. securities laws or other Applicable Laws. 
 15. Binding Agreement. Subject to the limitation on the transferability of this grant contained herein, this Agreement will be binding upon and inure to the benefit of the heirs, legatees, legal
representatives, successors and assigns of the parties hereto. 
 16. Additional Conditions to Issuance of Certificates for
Shares. The Company shall not be required to issue any certificate or certificates for Shares hereunder prior to fulfillment of all the following conditions: (a) the admission of such Shares to listing on all stock exchanges on which such
class of stock is then listed; (b) the completion of any registration or other qualification of such Shares under any U.S. state or federal or non-U.S. law or under the rulings or regulations of the Securities and Exchange Commission or any
other governmental regulatory body, which the Administrator shall, in its absolute discretion, deem necessary or advisable; (c) the obtaining of any approval or other clearance from any U.S. state or federal or non-U.S. governmental agency,
which the Administrator shall, in its absolute discretion, determine to be necessary or advisable; and (d) the lapse of such reasonable period of time following the Vesting Date of the Restricted Stock Units as the Administrator may establish
from time to time for reasons of administrative convenience. 
 17. Plan Governs. This Agreement is subject to all the
terms and provisions of the Plan. In the event of a conflict between one or more provisions of this Agreement and one or more provisions of the Plan, the provisions of the Plan will govern. 

18. Administrator Authority. The Administrator will have the power to interpret the Plan and this Agreement and to adopt such
rules for the administration, interpretation and application of the Plan as are consistent therewith and to interpret or revoke any such rules (including, but not limited to, the determination of whether or not any Restricted Stock Units have
vested). All actions taken and all interpretations and determinations made by the Administrator in good faith will be final and binding upon the Grantee, the Company and all other interested persons. No member of the Administrator will be personally
liable for any action, determination or interpretation made in good faith with respect to the Plan or this Agreement. 
 19.
Captions. Captions provided herein are for convenience only and are not to serve as a basis for interpretation or construction of this Agreement. 
 20. Agreement Severable. In the event that any provision in this Agreement will be held invalid or unenforceable, such provision will be severable from, and such invalidity or unenforceability will
not be construed to have any effect on, the remaining provisions of this Agreement. 
 21. Modifications to the
Agreement. This Agreement, including Appendix A, together with the Plan, constitutes the entire understanding of the parties on the subjects covered, 

  
 A-6

 
subject to any applicable pre-existing agreement or agreement entered into after the date hereof relating to full or partial acceleration of vesting in the event of a change of control of the
Company (or similar event). The Grantee expressly warrants that he or she is not accepting this Agreement in reliance on any promises, representations, or inducements other than those contained herein or expressly contemplated above. Modifications
to this Agreement or the Plan can be made only in an express written contract executed by a duly authorized officer of the Company. Notwithstanding anything to the contrary in the Plan or this Agreement, the Company reserves the right to revise this
Agreement as it deems necessary or advisable, in its sole discretion and without the consent of the Grantee, to comply with Section 409A of the Code or to otherwise avoid imposition of any additional tax or income recognition under
Section 409A of the Code prior to the actual payment of Shares pursuant to this award of Restricted Stock Units. Notwithstanding the foregoing, if required by Section 409A of the Code, no Restricted Stock Units will be paid to the Grantee
(or in the event of the Grantee’s death, to his or her estate) earlier than six (6) months and one (1) day following the date of the termination of the Grantee’s relationship with the Company as a Service Provider, subject
to Section 9. 
 22. Amendment, Suspension or Termination of the Plan. By accepting this Restricted Stock Unit
Award, the Grantee expressly warrants that he or she has received a right to receive stock under the Plan, and has received, read and understood a description of the Plan. The Grantee understands that the Plan is discretionary in nature and may be
modified, amended, suspended or terminated by the Company at any time, except as otherwise provided in the Plan and/or the Agreement. 
 23. Labor Law and Nature of Grant. In accepting the award of Restricted Stock Units, the Grantee acknowledges that: 
 (a) the Plan is established voluntarily by the Company; 
 (b) the award of
Restricted Stock Units is voluntary and occasional and does not create any contractual or other right to receive future awards of Restricted Stock Units, or benefits in lieu of Restricted Stock Units even if Restricted Stock Units have been awarded
repeatedly in the past; 
 (c) all decisions with respect to future awards, if any, will be at the sole discretion of the
Company; 
 (d) the Grantee’s participation in the Plan is voluntary; 

(e) the award is an extraordinary item that is outside the scope of the Grantee’s employment or service contract, if any;

 (f) the award is not part of normal or expected compensation or salary for any purposes, including, but not limited to,
calculation of any severance, resignation, termination, redundancy, end of service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments; 

(g) in the event that the Grantee is not an employee of the Company, the award will not be interpreted to form an employment or service
contract or relationship with the Company; and, furthermore, the award will not be interpreted to form an employment or service contract or relationship with the Employer or any Parent or other successor or a Subsidiary of the Company; 

  
 A-7

 (h) the future value of the underlying Shares is unknown and cannot be predicted with
certainty; 
 (i) the Company is not providing any tax, legal, or financial advice, nor is the Company making any
recommendations regarding the Grantee’s participation in the Plan or the acquisition or sale of Shares; and 
 (j) the
Grantee is hereby advised to consult with the Grantee’s own personal tax, legal and financial advisors regarding the Grantee’s participation in the Plan before taking any action related to the Plan. 

24. Data Privacy. The Grantee hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or
other form, of the Grantee’s personal data as described in the Notice of Grant and this Agreement and any other Restricted Stock Unit grant materials by and among, as applicable, the Employer, the Company and its Subsidiaries for the exclusive
purpose of implementing, administering and managing the Grantee’s participation in the Plan. 
 The Grantee understands
that the Company and the Employer may hold certain personal information about the Grantee, including, but not limited to, the Grantee’s name, home address and telephone number, date of birth, social insurance or other identification number,
salary, nationality, job title, any Shares or directorships held in the Company, details of all Restricted Stock Units or any other entitlement to Shares awarded, canceled, vested, unvested or outstanding in the Grantee’s favor, for the
exclusive purpose of implementing, administering and managing the Plan (“Data”). 
 The Grantee understands
that Data will be transferred to E*Trade or such other stock plan service provider as may be selected by the Company in the future, which is assisting the Company with the implementation, administration and management of the Plan. The Grantee
understands the recipients of Data may be located in the Grantee’s country, in the United States or elsewhere, and that the recipients’ country may have different data privacy laws and protections than the Grantee’s country. The
Grantee understands that the Grantee may request a list with the names and addresses of any potential recipients of the Data by contacting the Grantee’s local human resources representative. The Grantee authorizes the Company, E*Trade and any
other potential recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole
purpose of implementing, administering and managing the Grantee’s participation in the Plan. The Grantee understands that he or she may, at any time, view the Data, request additional information about the storage and processing of the Data,
require any necessary amendments to the Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Grantee’s local human resources representative. The Grantee understands, however, that refusing or
withdrawing consent may affect the Grantee’s ability to participate in the Plan. For more information on the consequences of the Grantee’s refusal to consent or withdrawal of consent, the Grantee understands that he or she may contact his
or her local human resources representative. 
 25. Notice of Governing Law. This award of Restricted Stock Units shall
be governed by, and construed in accordance with, the laws of the State of California, without regard to principles of conflict of laws. For purposes of litigating any dispute that arises directly or indirectly from the relationship of the parties
evidenced by the award of Restricted Stock Units, 

  
 A-8

 
the parties hereby submit to and consent to the exclusive jurisdiction of the State of California and agree that such litigation shall be conducted on in the courts of Santa Clara County,
California or the federal courts for the United States for the Northern District of California, and no other courts, where this grant is made and/or to be performed. 
 26. Electronic Delivery. The Company may, in its sole discretion, decide to deliver any documents related to Restricted Stock Units awarded under the Plan or future Restricted Stock Units that may
be awarded under the Plan by electronic means, or to request the Grantee’s consent to participate in the Plan by electronic means. The Grantee hereby consents to receive such documents by electronic delivery and if requested, to agree to
participate in the Plan through an on-line or electronic system established and maintained by the Company or another third party designated by the Company. 

  
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