Document:

EX-10.14

 Exhibit 10.14 

CIRRUS LOGIC, INC. 

2007 MANAGEMENT AND KEY INDIVIDUAL CONTRIBUTOR INCENTIVE PLAN 

Effective September 30, 2007 

(as amended and restated as of May 20, 2016) 
  

	1.	Purpose. 

 The purposes of the Cirrus Logic, Inc. Management and Key Individual
Contributor Incentive Plan (the “Incentive Plan”) are to (1) provide Participants with incentives to improve the Company’s financial performance through the achievement of semi-annual goals relating to the Company’s Operating
Profit Margin, Revenue Growth, or other performance criteria and (2) attract, retain, motivate and reward the Company’s management team and key individual contributors. 
  

	2.	Definitions. 

 As used herein, the following definitions shall apply: 

 

	 	(A)	“162(m) Award” means a conditional right to receive periodic cash incentive compensation intended to be “performance-based compensation” for purposes of Section 162(m) of the Code which is
granted under the Incentive Plan to an Employee designated by the Committee as likely to be a Covered Employee. 

  

	 	(B)	“Base Salary” means an Employee’s annual rate of base salary, exclusive of bonuses, incentive pay, commissions, and all other forms of compensation. Base Salary for a given Plan Cycle shall be
calculated based on Participants’ Base Salary in effect on the last day of a Plan Cycle. 

  

	 	(C)	“Board” means the Board of Directors of Cirrus Logic, Inc. 

  

	 	(D)	“Change in Control” means (i) the sale, lease, conveyance or other disposition of all or substantially all of the Company’s assets as an entirety or substantially as an entirety to any person,
entity or group or persons acting in concert; (ii) any “person” (as such term is used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, as amended) becoming the “beneficial owner” (as defined in Rule 13d-3 under
said Act), directly or indirectly, of securities of the Company representing 50% or more of the total voting power represented by the Company’s then outstanding voting securities; or (iii) consummation of a merger or consolidation of the
Company with any other corporation, other than a merger or consolidation that would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted
into voting securities of the surviving entity or its parent) at least 50% of the voting power represented by the voting securities of the Company or such surviving entity (or parent) outstanding immediately after such merger or consolidation.

	 	(E)	“Code” means the Internal Revenue Code of 1986, as amended. 

  

	 	(F)	“Committee” means the Compensation Committee of the Board. 

  

	 	(G)	“Company” means Cirrus Logic, Inc. and its wholly owned subsidiaries and affiliates, and each of their respective successors. 

 

	 	(H)	“Continuously Employed” means the Employee’s continuous and uninterrupted full-time employment with the Company. 

 

	 	(I)	“Covered Employee” means an Employee who is a “Covered Employee” as specified in Section 7(H). 

  

	 	(J)	“Disability” means total and permanent disability as defined in accordance with the Company’s Long-Term Disability Plan. 

 

	 	(K)	“Effective Date” means September 30, 2007. 

  

	 	(L)	“Eligible Participant” means any Employee who is in a management or leadership position in the Company or who is a key individual contributor whose efforts potentially have a material impact on the
Company’s performance. 

  

	 	(M)	“Employee” means a natural person who is employed by the Company and who is treated as an employee by the Company for tax purposes. 

 

	 	(N)	“Incentive Plan Pay-Out Percentage” means the multiplier derived from the formula set forth by the Committee before a Plan Cycle for determining the pay-out percentage based on the Company’s
Operating Profit Margin and Revenue Growth. The Committee shall review and update the Operating Profit Margin and Revenue Growth performance goals and the associated Incentive Plan Pay-Out Percentages applicable to a Plan Cycle prior to the
commencement of such Plan Cycle. 

  

	 	(O)	“Individual Incentive Payment” means the amount calculated for each Participant in Section 5 for each Plan Cycle and any 162(m) Award. 

 

	 	(P)	“Individual Performance Multiplier” means a performance multiplier of between 0% and 120% to be determined based on a Participant’s achievement of individual performance goals (“MBOs”)
set for each Participant pursuant to Section 3(C). 

  

	 	(Q)	“Operating Profit Margin” will be measured as the Company’s consolidated GAAP operating income (revenue minus cost of goods sold (COGS) minus research and development (R&D) minus selling,
general and administrative (SG&A), excluding Incentive Plan and VCP accruals, if any, and any Non-Recurring Items) as a percentage of revenue. The Company’s GAAP operating income shall be determined based on the Company’s financial
results as approved by the Company’s Audit Committee and filed with the Securities and Exchange Commission on a Form 10Q or Form 10K. 

  
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	 	(R)	“Non-Recurring Items” include any unusual or infrequent accounting items included in GAAP operating profits such as: 

 

	 	(i)	gains on sales of assets not otherwise included in revenue; 

  

	 	(ii)	losses on sales of assets, restructuring charges, merger-related costs including amortization or impairment of acquisition-related intangible assets, asset write-offs, write-downs, and impairments whether or not
included in COGS, SG&A or R&D expenses; 

  

	 	(iii)	the events or occurrences listed in Section 7(B); and 

  

	 	(iv)	except with respect to any 162(m) Award, such other items as the Committee may determine at its sole discretion. 

The Committee will determine, in its sole discretion, whether to include or exclude any or all of the above described Non-Recurring Items as
part of Operating Profit Margin.
  

	 	(S)	“Participant” means any Eligible Participant designated by the Committee to participate in the Incentive Plan for a Plan Cycle. 

 

	 	(T)	“Plan Administration Committee” means the Company’s Chief Executive Officer, Chief Financial Officer, and Vice President of Human Resources. 

 

	 	(U)	“Plan Cycle” means a period on or after the Effective Date beginning on the first day of the Company’s first fiscal quarter and ending on the last day of the Company’s second fiscal quarter,
or the period beginning on the first day of the Company’s third fiscal quarter and ending on the last day of the Company’s fourth fiscal quarter. 

  

	 	(V)	“Revenue Growth” means the Company’s year-over-year revenue growth based on the Company’s GAAP revenue for a given Plan Cycle over the Company’s GAAP revenue for the corresponding period
from the prior fiscal year. The Company’s GAAP revenue shall be determined based on the Company’s financial results as approved by the Company’s Audit Committee and filed with the Securities and Exchange Commission on a Form 10-Q or
Form 10-K. For purposes of calculating Revenue Growth, the Committee shall exclude any non-recurring revenue as calculated by the Committee for purposes of determining the Operating Profit Margin. To preserve the intended incentives and benefits of
the Incentive Plan, the Committee may adjust the Revenue Growth calculation to reflect any material corporate transaction (such as a reorganization, combination, separation, merger, acquisition, or any combination of the foregoing), or any complete
or partial liquidation of the Company (or any material portion of the Company). 

  

	 	(W)	“Target Incentive Amount” means, for each Participant, the product of (i) the Participant’s Base Salary times (ii) the Participant’s Target Incentive Factor. 

  
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	 	(X)	“Target Incentive Factor” means the applicable target award percentage for a Participant as set forth in Schedule A to this Incentive Plan. 

 

	 	(Y)	“VCP” means the Company’s Variable Compensation Plan, or any similar plan intended to compensate Employees based on the Company’s financial performance. 

 

	3.	Administration of the Incentive Plan. 

  

	 	(A)	Administration. The Incentive Plan shall be administered by the Committee. 

  

	 	(B)	Powers of the Committee. Subject to the provisions of the Incentive Plan and to the specific duties, if any, delegated by the Board, the Committee shall have the authority, in its discretion, to construe and
interpret the terms of the Incentive Plan, to designate the Participants in the Incentive Plan, and to make all other determinations deemed necessary or advisable for administering the Incentive Plan. The Committee may delegate to the Plan
Administration Committee the determination of the Participants in the Plan and the Target Incentive Amount for anyone other than Covered Employees and executive officers who are subject to the reporting requirements of Section 16 of the Securities
Exchange Act of 1934. 

  

	 	(C)	Individual Performance Multipliers. In determining an Individual Incentive Payment, the Committee may include an Individual Performance Multiplier for any Participant that reflects a Participant’s
achievement of MBOs during a Plan Cycle. If included, the Committee will set the MBOs for a Plan Cycle. For all Participants other than Covered Employees and executive officers who are subject to the reporting requirements of Section 16 of the
Securities Exchange Act of 1934, the Committee may delegate to the Plan Administration Committee the setting of MBOs for individual Participants. The specific MBOs must be established while the performance relating to the MBOs remains substantially
uncertain with respect to achievement of such MBOs during a Plan Cycle. MBOs may vary based on the Company’s strategic initiatives and the responsibilities of each Participant. 

 

	 	(D)	Effect of Committee’s Decisions. The Committee’s decisions, determinations and interpretations shall be final and binding on all Participants. 

 

	4.	Eligibility. 

 Except as set forth in Sections 7 and 8 below, Participants must be
Continuously Employed by the Company during a Plan Cycle to receive an Individual Incentive Payment. Participants who become employed during a Plan Cycle and remain Continuously Employed by the Company from the date of their employment through
the remainder of the Plan Cycle will receive a pro-rata Individual Incentive Payment based upon the number of calendar days during a Plan Cycle that the Participant was an Employee. Subject to Section 7 below, a Participant’s Target Incentive
Factor for a Plan Cycle will be based on the Target Incentive Factor for the Participant determined as of the last day of the Plan Cycle. 

  
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	5.	Determination of Payments. 

 The Individual Incentive Payment to each Participant
for each Plan Cycle shall be calculated by multiplying the Participant’s Target Incentive Amount by the Incentive Plan Pay-Out Percentage for that Plan Cycle. At its discretion and to the extent consistent with Section 7 in regard to any
Covered Employee, the Committee or Plan Administration Committee may further include an Individual Performance Multiplier in the determination of Individual Incentive Payments during any Plan Cycle. In no event shall any Individual Incentive Payment
exceed 250% of a Participant’s Target Incentive Amount and in no event will a Participant receive Individual Incentive Payments in any fiscal year in excess of $5,000,000. 

 

	6.	Payout Schedule. 

  

	 	(A)	Payout Timing. Individual Incentive Payments shall be paid in a cash lump sum to each Participant as soon as is reasonably practicable after the public disclosure of the Company’s financial results through
the filing of a Form 10-Q or Form 10-K with the Securities and Exchange Commission for the relevant Plan Cycle; provided, however, that with respect to each Participant (or his or her estate, as applicable) who, pursuant to Section 8(A) below, is
eligible to receive an Individual Incentive Payment for a given Plan Cycle without being Continuously Employed on the date such Individual Incentive Payment is paid, then: 

 

	 	(i)	With respect to an Individual Incentive Payment for a Plan Cycle composed of the Company’s first and second fiscal quarters, such Individual Incentive Payment shall be paid on or before the 15th day of the third
month following the later of (a) the last day of the calendar year in which such Participant died or incurred a Disability, or (b) the last day of the Company’s taxable year in which such Participant died or incurred a Disability; and

  

	 	(ii)	With respect to an Individual Incentive Payment for a Plan Cycle composed of the Company’s third and fourth fiscal quarters, such Individual Incentive Payment shall be paid in the calendar year during which such
Plan Cycle ends, but no later than on or before the 15th day of the third month following the later of (a) the last day of the calendar year in which such Participant died or incurred a Disability, or (b) the last day of the Company’s taxable
year in which such Participant died or incurred a Disability. 

  

	 	(B)	Continuous Status. Notwithstanding anything in the Incentive Plan to the contrary, except as provided in Section 8(A) below in the case of death or Disability, a Participant must be Continuously Employed between
the last day of a Plan Cycle and on the date the Individual Incentive Payment is paid in order to receive an Individual Incentive Payment for a given Plan Cycle. In the event a Participant’s Continuous Employment with the Company terminates
between the last day of a Plan Cycle and on the date the Individual Incentive Payment is paid for any reason other than death or Disability, any unpaid portion of the Participant’s Individual Incentive Payment shall be forfeited.

  

	 	(C)	Withholding. Any amounts payable hereunder shall be subject to applicable tax and other payroll withholding in accordance with the Company’s policies and programs and applicable law. 

  
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	7.	Awards to Covered Employees. 

  

	 	(A)	Awards Granted to Designated Covered Employees. If the Committee determines that an award to be granted to an Employee who is designated by the Committee as likely to be a Covered Employee should qualify as
“performance-based compensation” for purposes of Section 162(m) of the Code, such award shall be a 162(m) Award subject to the terms set forth in this Section 7, notwithstanding any contrary term otherwise provided in this Incentive Plan;
provided, however, that nothing in this Section 7 shall be interpreted as preventing the Committee from granting awards to Covered Employees that are not intended to constitute “performance-based compensation” within the meaning of Section
162(m) of the Code. 162(m) Awards may be granted with respect to a Plan Cycle, a calendar or fiscal year, or any other performance period designated by the Committee. 

 

	 	(B)	 Performance Goals Generally. The performance goals for 162(m) Awards shall consist of one or more
business criteria or individual performance criteria and a targeted level or levels of performance with respect to each of such criteria, as specified by the Committee consistent with this Section 7(B). Performance goals shall be objective and
shall otherwise meet the requirements of Section 162(m) of the Code and regulations thereunder (including Treasury Regulation §1.162-27 and successor regulations thereto), including the requirement that the level or levels of performance
targeted by the Committee result in the achievement of performance goals being “substantially uncertain” at the time the Committee actually establishes the performance goal or goals. The Committee may determine that 162(m) Awards shall be
granted and/or settled upon achievement of any one performance goal or that two or more of the performance goals must be achieved as a condition to the payment of such 162(m) Awards. Performance goals may differ for 162(m) Awards granted to any one
Participant or to different Participants. In establishing or adjusting a performance goal, the Committee may exclude the impact of any of the following events or occurrences which the Committee determines should appropriately be excluded: (i) any
amounts accrued by the Company or its subsidiaries pursuant to management bonus plans or cash profit sharing plans and related employer payroll taxes for the fiscal year; (ii) any discretionary or matching contributions made to a savings and
deferred profit-sharing plan or deferred compensation plan for the fiscal year; (iii) asset write-downs; (iv) litigation, claims, judgments or settlements; (v) the effect of changes in tax law or other such laws or regulations affecting reported
results; (vi) accruals for reorganization and restructuring programs; (vii) any extraordinary, unusual or nonrecurring items as described in the Accounting Standards Codification Topic 225, as the same may be amended or superseded from time to time;
(viii) any change in accounting principle 

  
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as defined in the Accounting Standards Codification Topic 250, as the same may be amended or superseded from time to time; (ix) any loss from a discontinued operation as described in the
Accounting Standards Codification Topic 360, as the same may be amended or superseded from time to time; (x) goodwill impairment charges; (xi) operating results for any business acquired during a specified calendar year; (xii) third party expenses
associated with any acquisition by the Company or any subsidiary; (xiii) items that the Board has determined do not represent core operations of the Company, specifically including, but not limited to, interest expenses, taxes, depreciation and
amortization charges; (xiv) marked-to-market adjustments for financial instruments; (xv) impairment to assets; and (xvi) any other extraordinary events or occurrences identified by the Committee, including, but not limited to, such items described
in management’s discussion and analysis of financial condition and results of operations or the financial statements and notes thereto appearing in the Company’s annual report to shareholders for the applicable year. 

 

	 	(C)	Business Criteria. One or more of the following business criteria for the Company, on a consolidated basis, and/or for specified subsidiaries or business or geographical units of the Company (except with
respect to the total stockholder return and earnings per share criteria), shall be used by the Committee in establishing performance goals for 162(m) Awards: (i) stock price, (ii) earnings per share (diluted or basic), (iii) operating income,
(iv) return on equity or assets, (v) cash flow, (vi) earnings before interest, taxes, depreciation and amortization (“EBITDA”), (vii) adjusted EBITDA, (viii) overall revenue or sales growth, (ix) expense reduction or management, (x) market
share, (xi) total shareholder return, (xii) return on investment, (xiii) earnings before interest and taxes (“EBIT”), (xiv) net income, (xv) return on net assets, (xvi) economic value added, (xvii) shareholder value added, (xviii) cash
flow return on investment, (xix) net operating profit, (xx) net operating profit after tax, (xxi) return on capital, (xxii) return on invested capital, (xxiii) achievement of savings from business improvement projects, (xxiv) capital project
deliverables, (xxv) human resources management targets, including medical cost reductions and time to hire, (xxvi) leverage ratios including debt to equity and debt to total capital; (xxvii) debt reduction; (xxviii) new or expanded market
penetration; (xxix) satisfactory internal or external audits; (xxx) revenues; (xxxi) Operating Profit Margin; (xxxii) Revenue Growth; and (xxxiii) any of the above goals determined on an absolute or relative basis or as compared to the performance
of a published or special index deemed applicable by the Committee including, but not limited to, the Russell 2000 Index or a group of comparable companies. 

  

	 	(D)	Individual Performance Criteria. Payment of 162(m) Awards may also be contingent upon individual performance goals established by the Committee, including individual business objectives and criteria specific to
an individual’s position and responsibility with the Company or its subsidiaries. If required for compliance with Section 162(m) of the Code, such criteria shall be approved by the stockholders of the Company. 

  
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	 	(E)	Time for Establishing Performance Goals. Performance goals applicable to 162(m) Awards shall be established not later than the earliest to occur of (i) 90 days after the beginning of the calendar year
applicable to such 162(m) Awards, (ii) after 25% of the period of service (as scheduled in good faith at the time the goal is established) related to such 162(m) Award has elapsed, or (iii) at such other date as may be required or permitted for
“performance-based compensation” under Section 162(m) of the Code. 

  

	 	(F)	Payout of Awards. After the end of each applicable calendar year or Plan Cycle, the Committee shall determine the amount of any 162(m) Award payable to each Participant. The Committee may, in its
discretion, reduce the amount of a payment otherwise to be made in connection with a 162(m) Award, and/or adjust the amount of a payment otherwise to be made in connection therewith to reflect the events or occurrences set forth in Section 7(B), but
may not exercise discretion to increase any such amount in the case of any 162(m) Award intended to qualify as “performance-based compensation” under Section 162(m) of the Code. For purposes of clarity, in the event that an adjustment made
solely pursuant to Section 7(B) above results in the increase of a payment under a 162(m) Award that is intended to qualify as “performance-based compensation” under Section 162(m) of the Code, the Committee will not be deemed to have made
an impermissible increase to the amount payable pursuant to that 162(m) Award. In addition to the provisions of Section 8(A), the Committee may specify the circumstances in which such a 162(m) Award shall be paid or forfeited in the event of
termination of employment by an Employee prior to the end of the applicable calendar year or payment of such Award; provided, that, with respect to Awards intended to constitute “performance-based compensation” within the meaning of
Section 162(m) of the Code, the Committee shall not take any action in this regard that would cause any such 162(m) Award to fail to so qualify. 

  

	 	(G)	Written Determinations. All determinations by the Committee as to the establishment of performance goals, the amount of any 162(m) Award, and the achievement of performance goals relating to and final payment of
162(m) Awards shall be made in writing in the case of any 162(m) Award intended to qualify as “performance-based compensation” under Section 162(m) of the Code. The Committee may not delegate any responsibility relating to such 162(m)
Awards. 

  

	 	(H)	 Status of Awards under Section 162(m) of the Code. It is the intent of the Company that 162(m) Awards
granted to Employees who are designated by the Committee as likely to be Covered Employees within the meaning of Section 162(m) of the Code and the regulations thereunder (including Treasury Regulation §1.162-27 and successor regulations
thereto) shall, if so designated by the Committee, constitute “performance-based compensation” within the meaning of Section 162(m) of the Code and regulations thereunder. Accordingly, the terms of this Section 7, including the
definitions of Covered Employee and other terms used herein, shall be interpreted in a manner consistent with Section 162(m) of the Code and regulations thereunder. The foregoing notwithstanding, because the Committee

  
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cannot determine with certainty whether a given Employee will be a Covered Employee with respect to a calendar year that has not yet been completed, the term “Covered Employee” as used
herein shall mean only an Employee designated by the Committee, at the time of grant of an award, who is likely to be a “covered employee” (as defined in Section 162(m) of the Code, Treasury Regulation §1.162-27 and successor
regulations thereto) with respect to that calendar year. If any provision of this Incentive Plan as in effect on the date of adoption of any agreements relating to awards that are designated as intended to comply with Section 162(m) of the Code does
not comply or is inconsistent with the requirements of Section 162(m) of the Code or regulations thereunder, such provision shall be construed or deemed amended to the extent necessary to conform to such requirements. 

 

	8.	Miscellaneous Provisions. 

  

	 	(A)	Death or Disability. In the event of a Participant’s death or Disability, the Participant or his or her estate (as applicable) will receive a pro rata Individual Incentive Payment, based upon the
Company’s performance during a Plan Cycle and the number of calendar days completed in the current Plan Cycle at the time of the death or Disability. 

  

	 	(B)	Unsecured Creditor. It is understood and agreed that the Company has only a contractual obligation to make payments of Individual Incentive Payments under this Incentive Plan and that such payments are to be
satisfied out of general corporate funds that are subject to the claims of the Company’s creditors. 

  

	 	(C)	Change in Control. In the event of a Change in Control, the Incentive Plan will be assumed or comparably replaced by the Company’s successor. If the successor fails or refuses to assume or comparably replace
the Incentive Plan, each Participant will receive a pro rata Individual Incentive Payment, based upon the number of calendar days completed in the current Plan Cycle multiplied by an Incentive Plan Pay-Out Percentage of 100%. Any such payment shall
be a lump sum cash payment made within ten (10) days of a Change in Control; provided, however, that with respect to each Participant (or his or her estate, as applicable) who, pursuant to Section 8(A) above, is eligible to receive an Individual
Incentive Payment for a given Plan Cycle without being Continuously Employed on the date such Individual Incentive Payment is paid, such Individual Incentive Payment shall be paid on or before the 15th day of the third month following the later of
(a) the last day of the calendar year in which such Participant died or incurred a Disability, or (b) the last day of the Company’s taxable year in which such Participant died or incurred a Disability. 

 

	 	(D)	Reclassification. In the event that an Employee who is a Participant is reclassified or demoted to a position which would not then qualify such individual as a Participant, the Employee will nevertheless remain
eligible to participate in the current Plan Cycle, provided that he or she remains in Continuous Employment. The Employee shall be ineligible, however, to participate in any new Plan Cycle, unless the Committee determines otherwise in its sole
discretion. 

  
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	 	(E)	Section 409A of the Code. Each Individual Incentive Payment under this Incentive Plan is intended to be exempt from Section 409A of the Code pursuant to the exception for short-term deferrals (within the meaning
of the Treasury regulations issued under Section 409A of the Code), and the Incentive Plan shall be construed and interpreted in accordance with such intent to the maximum extent permitted by law. 

 

	 	(F)	Right to Offset. To the extent permitted by law, the Company shall have the right to offset against its obligation to deliver amounts under any Individual Incentive Payment any outstanding amounts of whatever
nature that the Participant then owes to the Company. 

  

	9.	Limitations. 

 Neither the Incentive Plan nor any Individual Incentive Payment
shall confer upon a Participant any right with respect to continuing the Participant’s employment relationship with the Company, nor shall it interfere in any way with the Participant’s right or the Company’s right to terminate such
employment at any time, with or without cause. 
  

	10.	Amendment and Termination. 

 The Committee shall have the power to amend, suspend
or terminate the Incentive Plan at any time, provided that no such amendment or termination shall adversely impair a Participant’s rights with respect to any Plan Cycle that has already commenced. 

 

	11.	Governing Law. 

 The Program shall be governed by the internal substantive laws,
and not the choice of law rules, of the State of Delaware. 
  

	12.	No Right of Assignment. 

 No Participant shall have any right to assign, alienate,
or otherwise transfer his or her rights, if any, under the Incentive Plan. Any purported assignment, alienation or transfer by a Participant of his or her rights under the Incentive Plan shall be null and void ab initio and of no force
or effect. 

  
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 Schedule A 

TARGET INCENTIVE FACTORS FOR EACH PLAN CYCLE 
  

					
	Level	  	Target Incentive Factor	 
		
	 CEO
	  	 	65	% 
		
	 Direct Reports to the CEO at the Vice President Level and above
	  	 	32.5	% 
		
	 Other Management and Key Individual Contributors*
	  	 	5 – 32.5	% 

  

	*	As determined by the Plan Administrative Committee.EX-4.9.1

 Exhibit 4.9.1 

Execution Version 
 CHS 7032911v3 

FIRST AMENDMENT TO LEASE 

This FIRST AMENDMENT TO LEASE (this “Amendment”) is entered into and effective as of the 19th day of October, 2015
(the “First Amendment Effective Date”) by and between RIVERWORKS WATERTOWN HOLDINGS, LLC, a Delaware limited liability company, as landlord (“Landlord”), as successor-in-interest to Farley White Aetna Mills,
LLC, having an address for purposes hereof at One Market Plaza, Spear Tower, Suite 4125, San Francisco, California 94105, and MIMECAST NORTH AMERICA, INC., a Delaware corporation, as tenant (“Tenant”), having an address for
purposes hereof at 480 Pleasant Street, Watertown, Massachusetts 02472. 
 W I T N E S S E T H: 

WHEREAS, Landlord and Tenant arc the present parties to that certain Lease dated November 12, 2012 (the “Original
Lease”), as affected by that certain Commencement Date Agreement executed by Landlord and Tenant on or about June 6, 2013 (the “Confirmation”, and together with the Original Lease, the “Existing
Lease”), pursuant to which Landlord leases to Tenant and Tenant leases from Landlord a portion of the First Floor and Mezzanine Level of the Building located at 480 Pleasant Street, Watertown, Massachusetts, designated as Suite C-10, and
containing approximately 33,669 Rentable Square (the “Existing Premises”); and 
 WHEREAS, all initial capitalized
terms used and not otherwise defined in this Amendment shall have the meaning ascribed to such terms in the Existing Lease; and 

WHEREAS, Landlord and Tenant desire to enter into this Amendment in order to expand the Existing Premises to include a stipulated
10,501 Rentable Square Feet on the first (1st) floor of the Building shown as “Suite BI00” on the plan attached hereto as Schedule 1 (the “First Expansion Premises”) and to modify certain other terms and
provisions of the Existing Lease in connection therewith, all subject to and upon the terms and provisions contained in this Amendment. 

NOW, THEREFORE, for good and valuable consideration, and in consideration of the mutual agreements contained in this Amendment, Landlord and
Tenant hereby agree and amend the Existing Lease as follows: 
 1. Recital. The above recitals arc incorporated herein by this
reference. 
 2. Lease. As of the First Amendment Effective Date, all references to the “Lease” both in this
Amendment and in the Existing Lease shall mean and refer to the Existing Lease, as amended and affected by this Amendment. 
 3.
Extension of Term and Expansion of Existing Premises. The initial Term of the Lease, presently scheduled to expire on October 15, 2020, is hereby extended for all purposes under the Lease until October 31, 2020 (the “
Expiration Date”). Effective as of the date upon which Landlord’s First Expansion Premises Work and Landlord’s Additional Expansion Premises Work are Substantially Complete (as defined in Section 6 hereof) and Landlord
delivers the First Expansion Premises to Tenant free and clear of all other tenants and occupants 

 
(the “First Expansion Premises Commencement Date”); (a) in addition to the Existing Premises, Landlord hereby leases to Tenant, and Tenant hereby leases from Landlord,
the First Expansion Premises, subject to and upon all the terms of the Existing Lease, except as set forth in this Amendment; (b) all references in the Lease to the “Premises” shall mean and refer to the Existing Premises, together
with the First Expansion Premises; and (c) the expiration of the Term shall occur on the Expiration Date set forth above in this Section 3, unless validly extended by Tenant in accordance with the terms of the Lease to include the
Extension Term, as defined in Section 10.23 to the Lease, or sooner terminated in accordance with the terms of the Lease. The period of the Term beginning on the First Expansion Premises Commencement Date and continuing through the last day of
the Term is hereinafter referred to as the “First Expansion Premises Term”. The following Terms and provisions of the Existing Lease shall be inapplicable to the First Expansion Premises: (i) Article IV (excluding
Section 4.4, which shall remain applicable) and Exhibit B and Exhibit 0; and (ii) Section 10.9. 
 4. Amendments to
Option to Extend. Notwithstanding anything contained in the Existing Lease to the contrary. Landlord and Tenant agree that Tenant’s option to extend the Term pursuant to Section 10.23 of the Lease: (a) maybe exercised only
with respect to the entire Premises (i.e., the Existing Premises and the First Expansion Premises) and not any part thereof; (b) unless Landlord expressly agrees otherwise, may only be exercised by Mimecast, North America Inc. (or any Affiliate
which has succeeded to Tenant’s interest in the Lease in strict accordance with the terms and provisions contained in Section 6.3(b) of the Original Lease) and only if Mimecast North America, Inc. (or such Affiliate), both on the date of
its extension exercise notice and on the first day of the Extended Term, remains the Tenant under the Lease and itself occupies at least seventy percent (70.0%) of the Premises (and if either such conditions are not satisfied, Landlord, at its
option, may elect to void Tenant’s exercise of its option to extend by written notice to Tenant); and (c) must be exercised by written notice delivered to Landlord delivered on or before October 31, 2018, with time strictly of the
essence. 
 5. Base Rent. 

(a) Existing Premises Base Rent. Tenant shall continue to pay Base Rent for the Existing Premises in the same amounts and in accordance
with all terms and provisions of the Existing Lease. For the avoidance of doubt, Lease Year 7 of the Lease shall include the period of time between October 15, 2020 and the Expiration Date set forth in Section 3 above, and during such lime
Base Rent for the Existing Premises shall continue to be payable in the amount of $74,352.38 per month, as set forth in Section 1.2(m) of the Existing Lease. 

(b) First Expansion Premises Base Rent. In addition to the Base Rent payable by Tenant pursuant to the Existing Lease for the Existing
Premises, Tenant shall, commencing as of the First Expansion Premises Rent Commencement Date (as hereinafter defined) and on or before the first day of each calendar month thereafter through the Expiration Date, pay Base Rent to Landlord for the
First Expansion Premises in accordance with all of the terms and provisions contained in the Lease governing payment of Base Rent, but in the following amounts: 

  
 - 2 - 

													
	 Period
	  	 Per RSF
	 	  	 Annual
	 	 	 Monthly
	 
	 First Amendment Effective Date through the First Expansion Premises Rent Commencement
Date.
	  	$	0.00	  	  	$	0.00	  	 	$	0.00	  
				
	 First Expansion Premises Rent Commencement Date through the last day of the calendar month during
which the one-year anniversary of the First Expansion Premises Rent Commencement Date occurs (the “First Expansion Year”‘)
	  	$	33.50	  	  	$	351,783.50	  	 	$	29,315.30	  
				
	 The 12-month period immediately following the last day of the First Expansion Year (the
“Second Expansion Year”)
	  	$	34.50	  	  	$	362,284.50	  	 	$	30,190.38	  
				
	 The 12-month period immediately following the last day of the Second Expansion Year (the
“Third Expansion Year’)
	  	$	35.50	  	  	$	372,785.50	  	 	$	31,065.46	  
				
	 The 12-month period immediately following the last day of the Third Expansion Year (the
“Fourth Expansion Year”)
	  	$	36.50	  	  	$	383,286.50	  	 	$	31,940.55	  
				
	 The day immediately following the last day of the Fourth Expansion Year through October 31,
2020
	  	$	37.50	  	  	$	393,787.50	* 	 	$	32,815.63	  

  

	*	Prorated to reflect a partial year. 

 For purposes hereof, the “First Expansion
Premises Rent Commencement Date” shall mean the earlier to occur of (i) the First Expansion Premises Commencement Date, or (ii) the date upon which the First Expansion Premises Commencement Date would have occurred in the absence
of any Tenant Delay, as defined in Exhibit B, after duly accounting for any failure by Landlord to perform its obligations as set forth in Exhibit B within any applicable deadline set forth therein, provided, however,
that if the First Expansion Premises Rent Commencement Date would otherwise occur on or before March 1, 2016, then the First Expansion Premises Rent Commencement Date hereunder shall be March 1, 2016. Tenant acknowledges and agrees that,
under the foregoing clause (ii), the First Expansion Premises Rent Commencement Date may occur prior to the First Expansion Premises Commencement Date, and that Tenant maybe liable for Base Rent respecting the First Expansion Premises prior to its
being delivered by Landlord to Tenant hereunder. 

  
 - 3 - 

 Promptly following the First Expansion Premises Commencement Date and within ten (10) days
following Landlord’s written request, Landlord and Tenant shall execute and deliver a confirmatory amendment to the Lease or letter agreement prepared by Landlord documenting the First Expansion Premises Commencement Date and the First
Expansion Premises Rent Commencement Date in accordance with the terms of this Amendment. However, the provisions of this Amendment shall be self-operative and no failure by Landlord or Tenant to execute such confirmatory amendment shall have any
effect on the parties’ rights and obligations hereunder. 
 As set forth in the schedule set forth above, Landlord has agreed
that, subject to the terms hereof, no Base Rent for the First Expansion Premises (and only the First Expansion Premises) shall be due and payable during the period of time beginning on the First Amendment Effective Date and continuing through the
First Expansion Premises Rent Commencement Date. The Base Rent that would have otherwise been payable during such time is hereinafter referred to as the “Abated Base Rent”. Tenant acknowledges and agrees that the value of the Abated
Basic Rent is $33.50 per rentable square foot of the First Expansion Premises per annum, and that Landlord’s agreement to provide the Abated Base Rent is conditioned upon no monetary Event of Default occurring at any time during the Term.
Tenant agrees that Tenant’s right to the Abated Base Rent shall immediately terminate if (i) a monetary Event of Default occurs at any time during the Term, and (ii) Landlord terminates this Lease or Tenant’s right of possession
on account of such monetary Event of Default, in either such case (in addition to any other rights or remedies which may be available to Landlord on account thereof) a pro-rated amount of any Abated Base Rent previously credited to Tenant pursuant
to this Amendment shall (notwithstanding that Landlord is not obligated to deliver the First Expansion Premises to Tenant until Landlord’s First Expansion Premises Work and Landlord’s Additional Expansion Premises Work is Substantially
Complete) become immediately due and payable from Tenant to Landlord, such amount to equal the amount of the Abated Base Rent previously credited to Tenant pursuant to this Amendment multiplied by a fraction, the numerator of which shall be the
number of full or partial calendar months remaining in the First Expansion Premises Term as of the date the monetary Event of Default occurs and the denominator of which shall be fifty-six (56), being the number of full or partial calendar months
between the anticipated First Expansion Premises Commencement Date of March 1, 2016 and the Expiration Date. 
 6.
Condition of the First Expansion Premises; Landlord’s First Expansion Premises Work. Tenant shall accept delivery of the First Expansion Premises upon Landlord’s delivery thereof with Landlord’s First Expansion Premises
Work and Landlord’s Additional First Expansion Premises Work (as defined herein below) Substantially Complete, and Landlord shall have no obligation to perform any construction or other work therein or to otherwise prepare the First
Expansion Premises for Tenant’s occupancy, except Landlord shall, following the First Amendment Effective Date: (a) at Landlord’s sole cost and expense, perform the work described in Exhibit A attached hereto and
incorporated herein by reference, other than any work described therein as being the responsibility or obligation of Tenant (“Landlord’s First Expansion Premises Work”); and (b) perform certain additional work to the First
Expansion Premises to prepare the same for Tenant’s occupancy (the “Landlord’s Additional First  

  
 - 4 - 

 
Expansion Premises Work”), subject to and in accordance with the terms and provisions contained in Exhibit B attached hereto and incorporated herein by reference.
Landlord agrees to use commercially reasonable efforts to complete Landlord’s First Expansion Premises Work and Landlord’s Additional First Expansion Premises Work on or before March 1, 2016, and Tenant shall provide Landlord with
reasonable access to the Premises for such purposes. In the event Landlord’s First Expansion Premises Work and Landlord’s Additional First Expansion Premises Work is not “Substantially Complete” (as hereinafter defined) on or
before March 1,2016, Landlord shall have no liability therefor (except as expressly provided in this Amendment), and Tenant shall accept delivery of the First Expansion Premises when the same is delivered by Landlord with Landlord’s First
Expansion Premises Work and Landlord’s Additional First Expansion Premises Work Substantially Complete. In the event Landlord’s First Expansion Premises Work and Landlord’s Additional First Expansion Premises Work are not
Substantially Complete on or before May 1, 2016, as extended by each day of Tenant Delay (as defined in Exhibit B) and/or Force Majeure (the “Rent Credit Trigger Date”), then Landlord shall issue a credit to
Tenant in the amount of $963.79 for each day from and after the Rent Credit Trigger Dale until the date upon which Landlord’s First Expansion Premises Work and Landlord’s Additional First Expansion Premises Work are Substantially Complete,
with such credit to be applied towards Tenant’s installment(s) of Base Rent for the First Expansion Premises first due hereunder until fully credited. 

For purposes hereof, “Substantially Complete” shall mean Landlord’s First Expansion Premises Work and
Landlord’s Additional First Expansion Premises Work are completed in substantial accordance with the Construction Drawings (as defined in Exhibit B hereto) and a certificate of occupancy (or such other governmental approval which
lawfully permits Tenant to use the First Expansion Premises for the Permitted Uses) has been issued therefor, except to the extent that such certificate of occupancy or other approval cannot be issued due to incompletion of or defects in any Tenant
First Expansion Premises Work, Notwithstanding the foregoing, Landlord’s First Expansion Premises Work and Landlord’s Additional First Expansion Premises Work shall be deemed Substantially Complete notwithstanding that certain work items
thereof remain incomplete and/or require remedial work, provided that the incompletion of or defects in such items could not reasonably be expected to materially and adversely interfere with either (i)the performance of any Tenant First Expansion
Premises Work (as defined in the Work Letter) theretofore approved by Landlord, if any, or (ii) use and occupancy of the First Expansion Premises for the Permitted Uses (subject to completion by Tenant of any Tenant First Expansion Premises
Work). 
 7. Operating Expenses and Taxes. Notwithstanding anything contained in the Existing Lease to the contrary,
from and after the First Amendment Effective Date and during the First Expansion Premises Term, Tenant shall continue to pay Operating Expenses and Taxes for the Existing Premises in accordance with all terms and provisions contained in the Existing
Lease. In addition to and without in any way limiting such payments, with respect to the First Expansion Premises Tenant shall pay to Landlord, commencing on the First Expansion Premises Rent Commencement Date and through the expiration or earlier
termination of tire First Expansion Premises Term; (a) Tenant’s First Expansion Premises Percentage (as hereinafter defined) of the amount by which the annual Operating Expenses exceed the Operating Expenses for calendar year 2016; and
(b) Tenant’s First Expansion Premises Percentage of any increase in Taxes over the Taxes attributable to fiscal year 2016 (i.e., July 1, 2015 through June 30, 2016), 

  
 - 5 - 

 
in each case upon all the same terms and provisions applicable to Tenant’s payment on account of Taxes and Operating Expenses for the Existing Premises, as set forth in the Existing Lease.
For purposes hereof: (i) “Tenant’s First Expansion Premises Percentage” shall mean 5.37%; and (ii) a fiscal year shall be deemed to fall within the Term and/or the First Expansion Premises Term (as applicable) if such
fiscal year falls within the Term or First Expansion Premises Term in whole or in part, but in the latter case the Taxes for such year shall be pro rated on a per diem basis. 

8. Electricity. Notwithstanding the terms and provisions contained in Section 3.3 of the Lease, Landlord shall not be
obligated to install a sub-meter for measurement of electricity consumption in the First Expansion Premises. In the event that such sub-meter is not installed and at any time during which such sub-meter (if installed) is not operational, Tenant
shall pay to Landlord, within thirty (30) days following Landlord’s invoices therefor, such commercially reasonable charge for electricity service to the First Expansion Premises as Landlord may impose from time to time, it being agreed
that such charge shall initially be $1,312.63 per month. Such charge shall be subject to increase from time to time by written notice from Landlord to Tenant, except there shall be no profit to Landlord therefor. 

9. Security Deposit. There shall be no increase to the security deposit described in Section 10.19 of the Original Lease
for the First Expansion Premises under the Lease. 
 10. Brokers. Neither Landlord nor Tenant has dealt with any broker or
agent in connection with the negotiation or execution of this Amendment, other than DTZ and Cassidy Turley Commercial Real Estate Services, d/b/a Cushman & Wakefield, whose commissions shall be paid by Landlord pursuant to separate written
agreements. Landlord hereby indemnifies Tenant against any claims arising due to Landlord’s failure to pay such commissions as aforesaid; and Tenant and Landlord shall each indemnify the other against all costs, expenses, attorneys’ fees,
liens and other liability for commissions or other compensation claimed by any other broker or agent claiming the same by, through, or under the indemnifying party. 

11. Parking. During the First Expansion Premises Term (and during the Extended Term, if validly exercised by Tenant), and in
addition to the parking rights granted to Tenant in Section 2.1 (c) of the Lease, Tenant shall be entitled to use thirty (35) parking spaces at the Property, of which twenty (20) shall be in the Upper Lot and fifteen
(15) shall be in the Lower Lot, all subject to and upon the same terms and conditions applicable to the parking rights granted to Tenant in the Existing Lease. 

12. Miscellaneous. Landlord and Tenant hereby acknowledge and agree that, except as specifically amended by the terms of this
Amendment, all of the terms, covenants and provisions of the Existing Lease are hereby ratified and confirmed and shall remain in full force and effect. Tenant hereby certifies, represents and warrants to Landlord that, to the best of Tenant’s
knowledge and as of the First Amendment Effective Date, (a) Landlord is not in default under the Existing Lease, and (b) except as set forth on Schedule 2 attached hereto and incorporated herein by reference, no state of fact
or condition exists which, upon either the passage of time and/or the giving of notice, could give rise to a default of Landlord under the Existing Lease, This Amendment maybe executed in two (2) or more counterparts, and by the exchange of
facsimile or other electronic signatures with the same force and effect as original ink 

  
 - 6 - 

 
signatures, When each party has signed and delivered at least one (1) such counterpart, each counterpart shall be deemed an original, and, when taken together with the other signed
counterparts, shall constitute one Amendment, which shall be binding upon and effective as to Landlord and Tenant as of the First Amendment Effective Date, Each of Landlord and Tenant hereby represents and warrants to the other that the
individual(s) executing this Amendment on their respective behalf are duly authorized to do so, and that such authorization remains in full force and effect and has not been modified or revoked. 

[SEE NEXT PAGE FOR SIGNATURES] 

  
 - 7 - 

 IN WITNESS WHEREOF, Landlord and Tenant have executed this Amendment as of the date first
above-written, 
  

									
	LANDLORD:	 		 	TENANT:
			
	 RIVERWORKS WATERTOWN

HODLINGS, LLC, 
 a Delaware limited liability
company
	 		 	 MIMECAST NORTH AMERICA, INC., 

a Delaware corporation

					
	By:	 	 /s/ Rajir S. Patel
	 		 	By:	 	 /s/ Peter Campbell

		 	Name: Rajir S. Patel	 		 		 	Name: Peter Campbell
		 	Title: President	 		 		 	Title: CFO
		 		 		 		 	

  
 - 8 - 

 Schedule 1 Floor 

Plan of First Expansion Premises 
  

 

  
 S1-1 

 Schedule 2 

Exceptions to Tenant Estoppel Certificate 
  

	1.	On-going roof issues: Tenant has experienced leaking in certain areas of the office continuously since commencement of the Term. Such leaking consistently occurs, particularly when there is rain or snow. Landlord has
been notified of this issue. Landlord shall promptly repair all damages incurred from such leaking roof, including, but not limited to: 

  

	 	a.	Inspection, repair and/or replacement of affected carpets and any other finished floor surfaces or coverings. 

  

	 	b.	Repairs to affected walls, floors, ceilings and any other wall coverings. 

  

	2.	Pipe Burst/Leaking: A pipe/pump burst in the Premises on October 12, 2015, Such pipe burst is the second burst to occur in the Premises; hence, such pipes need to be inspected and sensors need to be installed in
any area containing a main water pump or pipe that is located in the Premises (Suite C10). Landlord has been notified of this issue. Landlord shall promptly perform the following actions and/or repair all damages incurred from such burst pipes and
flooding, including, but not limited to: 

  

	 	a.	Inspection, repair and/or replacement of affected carpets and any other finished floor surfaces or coverings. 

  

	 	b.	Testing and remediation, if necessary, of affected areas (including carpeting and drywall) to ensure no evidence of the existence of mold or mildew. 

 

	 	c.	Reimbursement for the cost of personal property belonging to any employee directly damaged by such burst pipe and/or flooding. 

  

	 	d.	Reimbursement for the cost of personal property of Tenant directly damaged by such burst pipe and/or flooding. 

  
 10 

 Schedule 2 

Exceptions to Tenant Estoppel Certificate 
  

	
	  

	  

	  

  
 S2-1 

 Exhibit A 

Landlord’s First Expansion Premises Work 

HVAC 
 The Premises (10,501 RSF) is serviced by a 15 ton
air handling unit located on the side of the building, At this time, there is no main distribution line from the unit supply side. Landlord, at Landlord’s cost shall install a main distribution line from the unit supply side, Tenant shall be
responsible for distribution within the Premises from the main distribution line. 
 Electrical 

Landlord shall be responsible for bringing power into the Premises. Landlord shall run a power line into the Premises from the 480-volt panel located by the
elevator s in Lobby A. In addition, Landlord shall install a transformer to step down the power to 120/208-volt and install a 1207208-volt panel in the Premises to allow for Tenant distribution. Landlord shall do the above electrical work at
Landlord’s cost. 

  
 A-1 

 Exhibit B 

Terms and Conditions for Landlord’s Additional First Expansion Premises Work 

All initial capitalized terms used and not otherwise defined in this Exhibit B shall have the meaning ascribed to such terms in the
Lease, It is agreed that time is of the essence for purposes hereof. 
 1. Landlord’s Additional First Expansion
Premises Work. Subject to and upon the terms and provisions contained in this Exhibit B, Landlord shall perform Landlord’s Additional First Expansion Premises Work (as hereinafter defined). As used in this Exhibit B,
“Landlord’s Additional First Expansion Premises Work” shall mean those certain improvements to the First Expansion Premises described on the final construction drawings (and any related specifications) approved by Landlord and
Tenant as provided in Section 2 of this Exhibit B, as the same may be amended from time to time in accordance with this Exhibit B (the “Construction Drawings”). 

2. Approval of Construction Drawings for Landlord’s Additional First Expansion Premises Work. 

(a) Preparation and Delivery of Draft Construction Drawings. Tenant shall cause Jim Dean, of Dean Associates Architects
located at 4 Railroad Ave,, Suite 301, Wakefield, MA 01880 (the “Architect”) to prepare proposed construction drawings and specifications for all improvements to be installed in the First Expansion Premises as part of
Landlord’s Additional First Expansion Premises Work, and Tenant shall deliver such plans and specifications (in form and substance sufficient for issuance of a building permit and in accordance with reasonable standards of professional care) to
Landlord on or before November 1, 2015, time being of the essence, for Landlord’s review and approval. Landlord’s approval thereof may be given or withheld by Landlord in accordance with the same standards applicable to Alterations by
Tenant under the Lease, as set forth in Section4 of the Original Lease. Further, Landlord’s Additional First Expansion Premises Work shall be deemed “Alterations” under the Lease for purposes of Section 4.4(d) of the Original
Lease. Accordingly Landlord reserves the right to require that all or any portion(s) of Landlord’s Additional First Expansion Premises Work be removed from the Premises by Tenant (at Tenant’s sole cost and expenses) upon the expiration or
earlier termination of the Lease by giving Tenant written notice thereof at the time Landlord approves the Construction Drawings. 

(b) Approval Process. Landlord shall notify Tenant whether it approves of Tenant’s submitted draft construction
drawings and specifications within fourteen (14) days after Tenant’s submission thereof, time being of the essence. If Landlord does not approve of such construction drawings and specifications, then Landlord shall notify Tenant of such
non-approval within said fourteen (14) day period, specifying in reasonable detail Landlord’s reasons for such non-approval (or requesting additional information), in which event Tenant shall cause the Architect to revise such construction
drawings and specifications in response to Landlord’s comments and submit the revised construction drawings and specifications to Landlord for its review and approval within seven (7) days following Landlord’s notice of non-approval.
Landlord 

  
 B-1 

 
shall then notify Tenant in writing whether it approves of the resubmitted construction drawings and specifications within seven (7) days after its receipt thereof. This process shall be
repeated until the construction drawings and specifications have been finally approved by Landlord and Tenant. At Landlord’s request, Tenant shall sign such Construction Drawings to evidence Tenant’s approval thereof. To the
above-described review and approval process, Tenant may submit draft schematic plans and/or construction drawings and specifications for designated portions of the First Expansion Premises or major systems (e.g., HVAC or life-safety systems) to
Landlord for its preliminary, non-binding review. 
 Notwithstanding anything contained herein to the contrary, Tenant
acknowledges and agrees that Landlord’s approval of the Construction Drawings shall be for administrative purposes only, that Tenant (and not Landlord) shall remain fully responsible for compliance of the Construction Drawings with the terms of
the Lease and all applicable laws, statutes, codes, rules and regulations, and that Landlord’s approval thereof shall not constitute a representation or warranty of any kind by Landlord, 

In the event that for any reason Tenant fails to deliver to Landlord its proposed construction drawings and specifications for
all improvements to be installed in the First Expansion Premises as part of Landlord’s Additional First Expansion Premises Work on or before November 1, 2015, each such day thereafter until such proposed construction drawings and
specifications are delivered to Landlord shall constitute one day of “Tenant Delay” for purposes of this Amendment. In addition, “Tenant Delay” shall also include the following, but only to the extent that
Landlord’s First Expansion Premises Work and/or Landlord’s Additional First Expansion Premises Work is actually delayed thereby, and then only where Landlord has given Tenant prompt notice thereof (which may be by e-mail or telephonic)
describing the delay in reasonable detail and setting forth the actions required of Tenant to eliminate or reduce the applicable delay: (i) any delays by Tenant in submitting revised construction drawings and specifications in accordance with
the deadlines set forth above, or any other delay in the performance of Landlord’s First Expansion Premises Work and/or Landlord’s Additional First Expansion Premises Work to the extent caused by Tenant’s failure to timely perform any
of its other obligations under this Exhibit B; (ii) any delay or interference in the performance of Landlord’s First Expansion Premises Work or Landlord’s Additional First Expansion Premises Work to the extent caused by
Tenant or anyone employed by or contracted for by Tenant, including, without limitation, contractors, material suppliers and/or utility providers in connection with the Tenant First Expansion Premises Work (as hereinafter defined); (iii) any
delay caused by the failure of the Construction Drawings to meet the requirements hereof and/or to otherwise fail to comply with applicable laws or codes; (iv) any delay caused by Tenant’s inclusion in the Construction Drawings of any
materials which are inconsistent with the Building and Existing Premises or which are not available to Landlord from reputable local suppliers with no unusual lead times, provided Landlord provides prompt notice to Tenant (which may be telephonic or
by e-mail) following Landlord’s obtaining actual knowledge of such unusual time and an opportunity to substitute materials for such unusual lead time materials; (v) any delay caused by Tenant’s or the Architect’s request or
instruction to Landlord or any contractor, subcontractor or material supplier for Landlord’s Additional First Expansion Premises 

  
 B-2 

 
Work once work thereon has commenced, to the extent such request or instruction is inconsistent with the Construction Drawings; (vi) any Change Order (hereinafter defined) or request for a
Change Order made by Tenant, or any change or request by Tenant for change in any Tenant First Expansion Premises Work (hereinafter defined) previously approved by Landlord; and (vii) unless previously approved, each day from and after
December 1,2015 until the Construction Drawings arc approved by both Landlord and Tenant. 
 3. Change Orders.
Following approval of the Construction Drawings as provided in Section 2 above, Landlord or Tenant may from time to time prior to completion of Landlord’s Additional First Expansion Premises Work initiate changes in Landlord’s
Additional First Expansion Premises Work (each, a “Change Order”). Each Change Order initiated by Tenant must receive the prior written approval of Landlord, such approval to be governed by the standards governing Landlord’s
approval of Alterations as set forth in the Lease. Landlord may initiate Change Orders as reasonably required due to construction or other circumstances in the interests of the Building and/or compliance with applicable laws and/or codes, and
Tenant’s approval of any such Change Orders proposed by Landlord shall not be unreasonably withheld, conditioned or delayed. 

4. Cost of Landlord’s Additional First Expansion Premises Work. 

(a) Construction Cost/First Amendment Allowance. Soft Costs Cap. The entire cost of Landlord’s Additional First Expansion
Premises Work, including both hard costs and soft costs thereof of any kind or nature, and including, without limitation, the costs and expenses of the Architect (collectively, the “Construction Cost”), shall be paid by Tenant as
provided herein, except Landlord shall, subject to and upon the terms and conditions contained in this Exhibit B, contribute the sum of Three Hundred Eighty Eight Thousand Five Hundred Thirty-Seven Dollars ($388,537.00) (the “First
Amendment Allowance”) towards the Construction Cost. Notwithstanding the foregoing, it is understood and agreed that not more than Seventy Seven Thousand Seven Hundred Seven and 40/100 Dollars ($77,707.40) of the First Amendment Allowance
(the “Soft Costs Cap”) may be used to pay costs incurred (i) to prepare or revise the Construction Drawings and/or any and all other plans, drawings specifications and renderings related to Landlord’s Additional First
Expansion Premises Work, (ii) for other architectural, engineering, design, consulting, project management, oversight, or for other expenses of any kind related to Landlord’s Additional First Expansion Premises Work not involving the
provision of construction labor or building materials to the Existing Premises, or (iii) for materials and/or labor to install any telecommunications or data cabling (collectively, “Soft Costs”). The entire First Amendment
Allowance in excess of the Soft Costs Cap (i.e. $310,829.60) shall only be available for hard construction costs of Landlord’s Additional First Expansion Premises Work [e.g., labor, materials and other costs customarily included in contractor
“general conditions” (e.g., temporary utilities and permanent connection fees, dumpster and cleaning fees, permit fees and equipment rental fees)] (collectively the “Hard Costs”). Further, notwithstanding anything
contained herein to the contrary, Landlord shall have no obligation to provide any portion of the First Amendment Allowance for materials which Landlord reasonably deems to be 

  
 B-3 

 
materially not in accordance with its construction standards for the Building, provided however, materials which are reasonably consistent with the Building and Existing Premises are deemed to be
in compliance with construction standards for the Building. Any portion of the First Amendment Allowance not utilized for design or construction of Landlord’s Additional First Expansion Premises Work shall accrue to Landlord, and Tenant shall
not be entitled to any credit or abatement of its financial obligations under the Lease on account thereof. 
 (b) Excess
Construction Costs/Construction Manager. Any Construction Cost in excess of the First Amendment Allowance and any Soft Costs in excess of the Soft Costs Cap (each an “Excess”) shall be paid solely by Tenant as hereinafter
provided. It is further understood and agreed Landlord shall be entitled to engage Holm & Associates or another construction manager reasonably satisfactory to Landlord (the “Construction Manager”) to coordinate and oversee
Landlord’s Additional First Expansion Premises Work for Landlord’s sole benefit and pay the Construction Manager a fee therefor, which fee shall fee not exceed 5.0% of the Hard Costs. The actual costs of the Construction Manager (subject
to the foregoing cap of 5.0% of the Hard Costs) and any actual third party architectural, engineering or other design professional or consultant review cost reasonably incurred by Landlord in connection with the Construction Drawings or
Landlord’s Additional First Expansion Premises Work shall be included in the Soft Costs. 
 In the event Landlord at any
time (or from time to time) determines in its sole but reasonable discretion that the Construction Cost is expected to exceed the First Amendment Allowance or that the Construction Cost is otherwise expected to result in any Excess, then Landlord
shall notify Tenant in writing of the same and provide commercially reasonable back-up documentation therefor to Tenant. In such event, Landlord shall be thereafter entitled to submit invoices respecting the Excess to Tenant on a monthly basis in
accordance with the following procedure: (i) not more frequently than on one occasion during each calendar month, Landlord shall be permitted to submit an invoice to Tenant (which Tenant shall be obligated to pay within 30 days following its
receipt thereof) for the portion of the Construction Cost incurred by Landlord during the prior calendar month, such portion to equal the amount of the Construction Cost incurred during the prior calendar month by a fraction, the numerator of which
shall be Landlord’s then-current reasonably estimated Excess, and the denominator of which shall be Landlord’s then-current reasonable estimate of the overall Construction Cost (and by way of example, if the then-current estimate of the
Excess is $100,000 and the then-current estimate of the Construction Cost is estimated to be S488.537, then Tenant would be responsible for 20,47% of the Construction Cost incurred by Landlord during the prior calendar month); and (ii) after
the actual Construction Cost has been determined, Landlord shall determine the final Excess amount (such determinations to be made by Landlord in its sole but reasonable discretion, absent manifest error, and Landlord shall provide commercially
reasonable back-up documentation therefor to Tenant). In the event such final Excess amount is less than the aggregate amount (if any) which Tenant has previously paid on account of the Excess, Landlord shall provide Tenant with a credit against its
Base Rent for the First Expansion Premises in the amount of the difference between Tenant’s estimated Excess payments and the actual Excess for which Tenant is 

  
 B-4 

 
responsible. In the event such final Excess amount is greater than the aggregate amount Tenant has previously paid on account of the Excess, Tenant shall pay to Landlord the remaining portion of
the Excess for which it is responsible within thirty (30) days following Landlord’s written invoice therefor. 
 5.
Performance of Landlord’s Additional First Expansion Premises Work. After the Construction Drawings have been approved as provided in Section 2 hereof, Landlord shall solicit at least two (2) general contractor bids and shall
then identify the contractor it selects for the performance of Landlord’s Additional First Expansion Premises Work and submit such contractor’s bid to Tenant for its review and information. Landlord shall use commercially reasonable
efforts to avoid or minimize use of union labor in connection with Landlord’s Additional First Expansion Premises Work, provided that Landlord determines, in its reasonable discretion, that use of non-union labor would not have any material
adverse effect on labor relations at the Building. Unless Tenant requests and Landlord agrees in writing to use an alternative contractor (which agreement Landlord may withhold in its sole discretion), Landlord shall engage such contractor to obtain
a building permit for Landlord’s Additional First Expansion Premises Work and cause Landlord’s Additional First Expansion Premises Work to be performed in accordance with the Construction Drawings in all material respects, such
construction to be performed during Building standard construction hours. Landlord shall cause its contractors to use commercially reasonable efforts to minimize, to the extent practicable, interference with Tenant’s use of and access to the
Premises while performing Landlord’s First Expansion Premises Work and Landlord’s Additional First Expansion Premises Work; however, Tenant acknowledges that the performance of Landlord’s First Expansion Premises Work and
Landlord’s Additional First Expansion Premises Work may cause unavoidable interference with Tenant’s use of and access to the Premises, and Tenant hereby waives and relinquishes any claims or demands against Landlord on account thereof and
agrees that there shall be no abatement of Base Rent or any other financial obligations of Tenant under the Lease on account thereof. Tenant shall cooperate in all reasonable ways and provide Landlord, the Construction Manager and such contractor
(together with its subcontractors) reasonable access to the Premises for purposes of constructing Landlord’s First Expansion Premises Work and Landlord’s Additional First Expansion Premises Work. In addition, Tenant shall, at
Landlord’s request from time to time, make the Architect available to provide such construction administration and related services as Landlord may reasonably request in connection with Landlord’s First Expansion Premises Work Additional
First Expansion Premises Work, including, without limitation, review of samples, shop drawings, requests for information and the like. All costs of the Architect in connection with the foregoing shall be included in the Soft Costs. 

6. Construction Representatives. Landlord’s and Tenant’s representatives (each, a “Construction
Representative”) for purposes of Landlord’s Additional First Expansion Premises Work will be as follows, provided that either party may change its Construction Representative by written notice to the other given in accordance with the
terms of the Lease: 

  
 B-5 

							
		 	Landlord’s Representative:	 		 	Christina Holm
		 		 		 	Holm & Associates
		 		 		 	29 Plain Road
		 		 		 	Westford, Massachusetts 01886
		 		 		 	Phone: (978) 692-9276
		 		 		 	E-mail: cholm@holm-associates.com
				
		 	Tenant’s Representative:	 		 	Kayla Keefe
		 		 		 	Mimecast North America, Inc.
		 		 		 	480 Pleasant Street
		 		 		 	Watertown, MA 02472
		 		 		 	Phone: (781)966-5340
		 		 		 	E-mail: kkeefe@mimecast.com

 Tenant and Landlord acknowledge and agree that Tenant’s Construction Representative and
Landlord’s Construction Representative shall have full power and authority to act on their respective behalf in connection with Landlord’s First Expansion Premises Work, and any action taken by either of them in such capacity shall be
fully binding upon Tenant or Landlord, respectively, for purposes of this Exhibit B. 
 7. Work by Tenant. The
parties acknowledge that Landlord’s Additional First Expansion Premises Work may not include each and every item of work and/or preparation necessary to make the First Expansion Premises fully functional for any use, and that Tenant may employ
separate contractors to install Tenant’s trade fixtures, trade equipment, wiring, telecommunications and data systems, security systems, and furnishings therein (collectively, the “Tenant First Expansion Premises Work”).
Subject to the terms and provisions hereof and to such reasonable insurance and construction requirements as Landlord may reasonably impose, Landlord shall use commercially reasonable efforts to permit Tenant to enter upon the First Expansion
Premises approximately thirty (30) days prior to the First Expansion Premises Commencement Date for purposes of design, space planning, inspection and the like, and for performance of any Tenant First Expansion Premises Work duly approved by
Landlord in accordance with the terms of the Lease-Tenant, and not Landlord, shall be responsible for all matters relating to the Tenant First Expansion Premises Work, including, without limitation, the design and construction thereof and
coordination of the same with Landlord’s First Expansion Premises Work and Landlord’s Additional First Expansion Premises Work, and the Tenant First Expansion Premises Work shall be considered Alterations for all purposes under the Lease.
In connection with Landlord’s First Expansion Premises Work, Landlord’s Additional First Expansion Premises Work and the Tenant First Expansion Premises Work, both Tenant and Landlord agree to make good faith efforts to maintain harmonious
labor relations, and any reasonable costs incurred by Landlord in connection therewith shall be included in the Construction Cost. In furtherance of the foregoing, Tenant shall take all necessary or reasonable measures to ensure that Tenant’s
contractors and their respective subcontractors and material suppliers in connection with the Tenant First Expansion Premises Work (and any related activities) shall avoid any delay in the performance of Landlord’s First Expansion Premises Work
and/or Landlord’s Additional First Expansion Premises Work. If the 

  
 B-6 

 
construction of the Tenant First Expansion Premises Work interferes in any material way with the construction of Landlord’s First Expansion Premises Work or Landlord’s Additional First
Expansion Premises Work, Landlord may, in its reasonable discretion, require that Tenant cease the construction of Tenant First Expansion Premises Work until such time as Landlord reasonably determines that Tenant First Expansion Premises Work may
resume without such interference. Landlord may inspect any of the Tenant First Expansion Premises Work at all reasonable times. 

8. Quality and Performance of Work. Landlord’s First Expansion Premises Work and Landlord’s Additional First
Expansion Premises Work shall be performed in accordance with the Construction Drawings in all material respects, and in a good, workmanlike and lawful manner. Except to the extent to which Tenant shall have given Landlord written notice that
Landlord has not performed Landlord’s First Expansion Premises Work and/or Landlord’s Additional First Expansion Premises Work in accordance with the foregoing requirements, specifying Landlord’s failure in reasonable detail, not
later than eleven (11) months following the First Expansion Premises Commencement Date, Tenant shall be deemed conclusively to have approved the construction of Landlord’s First Expansion Premises Work and Landlord’s Additional First
Expansion Premises Work and shall have no claim that Landlord has failed to perform any of Landlord’s obligations under this Exhibit B and/or the Lease with respect thereto. Notwithstanding the foregoing, Landlord shall use commercially
reasonable efforts to enforce any manufacturer warranties which it may receive in connection with Landlord’s First Expansion Premises Work and Landlord’s Additional First Expansion Premises Work upon Tenant’s written request(s)
therefor from time to time during the entire First Expansion Premises Term (provided the applicable warranty remains in effect at the time of Tenant’s request). 

  
 B-7

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