Document:

Exhibit 10.1

ALTIMMUNE, INC.

 

 

 

2017 OMNIBUS INCENTIVE PLAN

 

     

     

    

 

 

TABLE OF CONTENTS

 

Page

 

	ARTICLE I PURPOSE	1
	ARTICLE II DEFINITIONS	1
	2.1     “Acquisition Event”	1
	2.2     “Affiliate”	1
	2.3     “Appreciation Award”	1
	2.4     “Award”	1
	2.5     “Board”	1
	2.6     “Cause”	2
	2.7     “Change in Control”	2
	2.8     “Change in Control Price”	2
	2.9     “Code”	2
	2.10   “Committee”	2
	2.11   “Common Stock”	3
	2.12   “Company”	3
	2.13   “Competitor”	3
	2.14   “Consultant”	3
	2.15   “Detrimental Activity”	3
	2.16   “Disability”	4
	2.17   “Disparagement”	4
	2.18   “Effective Date”	4
	2.19   “Eligible Employee”	4
	2.20   “Exchange Act”	4
	2.21   “Exercisable Awards”	4
	2.22   “Fair Market Value”	4
	2.23   “Family Member”	5
	2.24   “HMRC”	5
	2.25   “Incentive Stock Option”	5
	2.26   “Individual Target Award”	5
	2.27   “Lead Underwriter”	5
	2.28   “Lock-Up Period”	5
	2.29   “Non-Employee Director”	5
	2.30   “Non-Qualified Stock Option”	5
	2.31   “Other Extraordinary Event”	5
	2.32   “Other Stock-Based Award”	5
	2.33   “Parent”	5
	2.34   “Participant”	5
	2.35   “Performance-Based Cash Award”	5
	2.36   “Performance Criteria”	5
	2.37   “Performance Period”	5
	2.38   “Performance Share”	5

 

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	2.39   “Performance Unit”	6
	2.40   “Person”	6
	2.41   “Plan”	6
	2.42   “Registration Date”	6
	2.43   “Restricted Stock”	6
	2.44   “Restriction Period”	6
	2.45   “Rule 16b-3”	6
	2.46   “Secondary Contributions”	6
	2.47   “Secondary Contributor”	6
	2.48   “Section 162(m)”	6
	2.49   “Section 4.2 Event”	6
	2.50   “Section 409A Covered Award”	6
	2.51   “Section 409A”	6
	2.52   “Securities Act”	6
	2.53   “Stock Option” or “Option”	6
	2.54   “Subsidiary”	6
	2.55   “Ten Percent Stockholder”	6
	2.56   “Termination”	6
	2.57   “Termination of Consultancy”	7
	2.58   “Termination of Directorship”	7
	2.59   “Termination of Employment”	7
	2.60   “Transfer”	7
	ARTICLE III ADMINISTRATION	7
	3.1   The Committee.	7
	3.2   Grant and Administration of Awards.	8
	3.3   Award Agreements.	8
	3.4   Guidelines.	8
	3.5   [Reserved].	9
	3.6   Delegation; Advisors.	9
	3.7   Decisions Final.	9
	3.8   Procedures.	9
	3.9   Liability; Indemnification.	9
	ARTICLE IV SHARE LIMITATIONS	10
	4.1   Shares.	10
	4.2   Changes.	11
	4.3   Minimum Purchase Price.	12
	ARTICLE V ELIGIBILITY	12
	5.1   General Eligibility.	12
	5.2   Incentive Stock Options.	13
	5.3   General Requirement.	13
	

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                                                                                ARTICLE VI STOCK OPTIONS
	13
	6.1   Stock Options.	13
	6.2   Incentive Stock Options.	13
	6.3   Terms of Stock Options.	13
	ARTICLE VII RESTRICTED STOCK	16
	7.1   Awards of Restricted Stock.	16
	7.2   Awards and Certificates.	17
	7.3   Restrictions and Conditions.	17
	ARTICLE VIII OTHER STOCK-BASED AWARDS	19
	8.1   Other Awards.	19
	8.2   Terms and Conditions.	19
	ARTICLE IX PERFORMANCE-BASED CASH AWARDS	21
	9.1   Performance-Based Cash Awards.	21
	9.2   Terms and Conditions.	21
	ARTICLE X CHANGE IN CONTROL PROVISIONS	23
	ARTICLE XI TERMINATION OR AMENDMENT OF PLAN	23
	ARTICLE XII UNFUNDED PLAN	24
	ARTICLE XIII GENERAL PROVISIONS	24
	13.1     Legend.	24
	13.2     Other Plans.	25
	13.3     No Right to Employment/Consultancy/Directorship.	25
	13.4     Withholding of Taxes.	25
	13.5     No Assignment of Benefits.	25
	13.6     Listing and Other Conditions.	25
	13.7     Governing Law.	26
	13.8     Construction.	26
	13.9     No Acquired Rights.	26
	13.10   Data Protection.	26
	13.11   Costs.	27
	13.12   No Right to Same Benefits.	27
	13.13   Death/Disability.	27
	13.14   Section 16(b) of the Exchange Act.	27
	13.15   Section 409A.	27
	13.16   Successor and Assigns.	28
	13.17   Severability of Provisions.	28
	13.18   Participants Subject to Taxation Outside the U.S.; No Tax Equalization.	28

 

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	13.19   Payments to Minors, Etc.	28
	13.20   Headings and Captions.	29
	13.21   Recoupment.	29
	13.22   Reformation.	29
	13.23   Electronic Communications.	29
	13.24   Agreement.	29
	13.25   Defense of Trade Secrets Act.	29
	ARTICLE XIV EFFECTIVE DATE OF PLAN	30
	ARTICLE XV TERM OF PLAN	30
	EXHIBIT A  Performance CRITERIA	i
	UK ADDENDUM	1
	1.   Purpose	1
	2.   Definitions	1
	3.   Terms	1
	4.   Withholding Obligations	1
	5.   Section 431 Elections	2

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ALTIMMUNE, INC.

 

__________________________

 

2017 OMNIBUS INCENTIVE PLAN

 

__________________________

 

ARTICLE
I

PURPOSE

 

The purpose of this
Altimmune, Inc. 2017 Omnibus Incentive Plan is to enhance the profitability and value of the Company for the benefit of its stockholders
by enabling the Company to offer Eligible Employees, Consultants and Non-Employee Directors incentive awards to attract, retain
and reward such individuals and strengthen the mutuality of interests between such individuals and the Company’s stockholders.
The Plan, as set forth herein, is effective as of the Effective Date (as defined in Article XIV). All references to “share”,
“shares”, “option” or “options” under this Plan have been adjusted to reflect the Company’s
ten-for-one reverse stock split effected on May 4, 2017.

 

ARTICLE
II

DEFINITIONS

 

For purposes of the
Plan, the following terms shall have the following meanings:

 

2.1          
“Acquisition Event” means a merger or consolidation in which the Company is not the surviving entity,
any transaction that results in the acquisition of all or substantially all of the Company’s outstanding Common Stock by
a single person or entity or by a group of persons or entities acting in concert, or the sale or transfer of all or substantially
all of the Company’s assets.

 

2.2          
“Affiliate” means each of the following: (a) any Subsidiary; (b) any Parent; (c) any corporation,
trade or business (including a partnership or limited liability company) that is directly or indirectly controlled 50% or more
(whether by ownership of stock, assets or an equivalent ownership interest or voting interest) by the Company or any Affiliate;
(d) any corporation, trade or business (including a partnership or limited liability company) that directly or indirectly controls
50% or more (whether by ownership of stock, assets or an equivalent ownership interest or voting interest) of the Company; and
(e) any other entity in which the Company or any Affiliate has a material equity interest and that is designated as an “Affiliate”
by resolution of the Committee.

 

2.3          
“Appreciation Award” means any Stock Option or any Other Stock-Based Award that is based on the
appreciation in value of a share of Common Stock in excess of an amount at least equal to the Fair Market Value on the date such
Stock Option or Other Stock-Based Award is granted.

 

2.4         
“Award” means any award granted or made under the Plan of any Stock Option, Restricted Stock, Other
Stock-Based Award or Performance-Based Cash Award.

 

2.5          
“Board” means the Board of Directors of the Company.

 

     
 

     

    

 

2.6          
“Cause” means, with respect to a Participant’s Termination of Employment or Termination of
Consultancy: unless otherwise defined in the applicable Award agreement or other written agreement approved by the Committee,
a termination due to (i) the Participant’s conviction of, or plea of guilty or nolo contendere to, a felony; (ii) perpetration
by the Participant of an illegal act, dishonesty or fraud that could have a significant adverse effect on the Company or its assets
or reputation; or (iii) the Participant’s willful misconduct with regard to the Company, as determined by the Committee.
With respect to a Participant’s Termination of Directorship, “cause” means an act or failure to act that constitutes
cause for removal of a director under Delaware law.

 

2.7          
“Change in Control” unless otherwise defined in the applicable Award agreement or other written
agreement approved by the Committee and subject to Section 13.14(b), means the occurrence of any of the following:

 

(a)       
the acquisition (including through purchase, reorganization, merger, consolidation or similar transaction), directly or
indirectly, in one or more transactions by a Person of beneficial ownership (within the meaning of Rule 13d-3 under the Exchange
Act) of securities representing 50% or more of the combined voting power of the securities of the Company entitled to vote generally
in the election of directors of the Board, calculated on a fully diluted basis after giving effect to such acquisition;

 

(b)       
an election of Persons to the Board that causes two-thirds of the Board to consist of Persons other than (i) members of
the Board on the Effective Date and (ii) Persons who were nominated for election as members of the Board at a time when two-thirds
of the Board consisted of Persons who were members of the Board on the Effective Date; provided that any Person nominated
for election by a Board at least two-thirds of which consisted of Persons described in clauses (i) or (ii) or by Persons who were
themselves nominated by such Board shall be deemed to have been nominated by a Board consisting of Persons described in clause
(i); or

 

(c)       
the sale or other disposition, directly or indirectly, of all or substantially all of the assets of the Company and its
subsidiaries, taken as a whole, to any Person;

 

provided, however,
that a Change in Control shall be deemed to not have occurred if such Change in Control results from the issuance, in connection
with a bona fide transaction or series of transactions with the primary purpose of providing equity financing to the Company or
any of its Affiliates, of voting securities of the Company or any of its Affiliates or any rights to acquire voting securities
of the Company or any of its Affiliates which are convertible into voting securities.

 

2.8          
“Change in Control Price” has the meaning set forth in Section 10.1.

 

2.9         
“Code” means the Internal Revenue Code of 1986, as amended. Any reference to a section of
the Code shall also be a reference to any successor provision and any Treasury Regulation promulgated thereunder.

 

2.10 
       “Committee”
means: (a) with respect to the application of the Plan to Eligible Employees and Consultants, the Compensation Committee
of the Board or such other committee or subcommittee that is appointed by the Board, in each case, consisting of two or more non-employee
directors, each of whom is intended to be (i) to the extent required by Rule 16b-3, a “nonemployee director” as defined
in Rule 16b-3; (ii) to the extent required by Section 162(m), an “outside director” as defined under Section 162(m);
and (iii) as applicable, an “independent director” as defined under the Nasdaq Listing Rules, the NYSE Listed Company
Manual or other applicable stock exchange rules; and (b) with respect to the application of the Plan to Non-Employee Directors,
the Board. It is intended that, absent an affirmative decision by the Board to appoint a separate Committee, the Compensation
Committee of the Board shall serve as the “Committee” with respect to the application of the Plan to Eligible Employees
and Consultants. To the extent that no Committee exists that has the authority to administer the Plan, the functions of the Committee
shall be exercised by the Board and all references herein to the Committee shall be deemed references to the Board. If for any
reason the appointed Committee does not meet the requirements of Rule 16b-3 or Section 162(m), such noncompliance shall not affect
the validity of Awards, grants, interpretations or other actions of the Committee.

 

     
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2.11 
      “Common
Stock” means the common stock of the Company, par value $0.001 per share.

 

2.12   
    “Company”
means Altimmune, Inc., a Delaware corporation, and its successors by operation of law.

 

2.13   
    “Competitor” means any Person that is, directly or indirectly, in competition
with the business or activities of the Company and its Affiliates.

 

2.14       
“Consultant” means any natural person who provides bona fide consulting or advisory services to
the Company or its Affiliates, provided that such services are not in connection with the offer or sale of securities in
a capital-raising transaction, and do not, directly or indirectly, promote or maintain a market for the Company’s or its
Affiliates’ securities.

 

2.15       
“Detrimental Activity” means, unless otherwise defined in the applicable Award agreement or other
written agreement approved by the Committee:

 

(a)       
without written authorization from the Company, disclosure to any Person outside the Company and its Affiliates or the use
in any manner, except as necessary in the furtherance of Participant’s responsibilities to the Company or any of its Affiliates,
at any time, of any confidential information, trade secrets or proprietary information relating to the business of the Company
or any of its Affiliates that is acquired by the Participant at any time prior to the Participant’s Termination;

 

(b)       
any activity while employed or performing services that results, or if known could have reasonably been expected to result,
in the Participant’s Termination for Cause;

 

(c)       
without written authorization from the Company, directly or indirectly, in any capacity whatsoever, (i) own, manage,
operate, control, be employed by (whether as an employee, consultant, independent contractor or otherwise, and whether or not for
compensation) or render services to any Competitor; (ii) solicit, aid or induce any customer of the Company or any Subsidiary to
curtail, reduce or terminate its business relationship with the Company or any Subsidiary, or in any other way interfere with any
such business relationships with the Company or any Subsidiary; (iii) solicit, aid or induce any employee, representative or agent
of the Company or any Subsidiary to leave such employment or retention or to accept employment with or render services to or with
any other person, firm, corporation or other entity unaffiliated with the Company or hire or retain any such employee, representative
or agent or take any action to materially assist or aid any other person, firm, corporation or other entity in identifying, hiring
or soliciting any such employee, representative or agent; or (iv) interfere, or aid or induce any other person or entity in interfering,
with the relationship between the Company, its Subsidiaries and any of their respective vendors, joint venturers or licensors;

 

     
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(d)       
a material breach of any restrictive covenant contained in any agreement between the Participant and the Company or an Affiliate;
or

 

(e)       
the Participant’s Disparagement, or inducement of other to do so, of the Company or its Affiliates or their past or
present officers, directors, employees or products.

 

Only the Chief Executive Officer or the
Chief Financial Officer of the Company (or his or her designee, as evidenced in writing) shall have the authority to provide the
Participant, except for himself or herself, with written authorization to engage in the activities contemplated in subsections
(a) and (c).

 

2.16       
“Disability” means, unless otherwise defined in the applicable Award agreement or other written
agreement approved by the Committee, with respect to a Participant’s Termination, a permanent and total disability as defined
in Section 22(e)(3) of the Code. A Disability shall only be deemed to occur at the time of the determination by the Committee
of the Disability. Notwithstanding the foregoing, for an Award that provides for payment or settlement triggered upon a Disability
and that constitutes a Section 409A Covered Award, the foregoing definition shall apply for purposes of vesting of such Award,
provided that for purposes of payment or settlement of such Award, such Award shall not be paid (or otherwise settled)
until the earliest of: (A) the Participant’s “disability” within the meaning of Section 409A(a)(2)(C)(i) or
(ii) of the Code, (B) the Participant’s “separation from service” within the meaning of Section 409A of the
Code and (C) the date such Award would otherwise be settled pursuant to the terms of the Award agreement.

 

2.17      
“Disparagement” means making comments or statements to the press, the
Company’s or its Affiliates’ employees, consultants or any individual or entity with whom the Company or its Affiliates
has a business relationship which could reasonably be expected to adversely affect in any manner: (a) the conduct of the business
of the Company or its Affiliates (including, without limitation, any products or business plans or prospects); or (b) the business
reputation of the Company or its Affiliates, or any of their products, or their past or present officers, directors or employees.

 

2.18       
“Effective Date” means the effective date of the Plan as defined in Article XIV.

 

2.19       
“Eligible Employee” means an employee of the Company or an Affiliate.

 

2.20       
“Exchange Act” means the Securities Exchange Act of 1934, as amended, and all rules and regulations
promulgated thereunder. Any references to any section of the Exchange Act shall also be a reference to any successor provision.

 

2.21       
“Exercisable Awards” has the meaning set forth in Section 4.2(d).

 

2.22       
“Fair Market Value” unless otherwise required by any applicable provision of the Code, means as
of any date and except as provided below, (a) the closing price reported for the Common Stock on such date: (i) as reported on
the principal national securities exchange in the United States on which it is then traded; or (ii) if not traded on any such
national securities exchange, as quoted on an automated quotation system sponsored by the Financial Industry Regulatory Authority
or (b) if the Common Stock shall not have been reported or quoted on such date, on the first day prior thereto on which the Common
Stock was reported or quoted. If the Common Stock is not traded, listed or otherwise reported or quoted, then Fair Market Value
means the fair market value of the Common Stock as determined by the Committee in good faith in whatever manner it considers appropriate
taking into account the requirements of Section 409A or Section 422 of the Code, as applicable. Notwithstanding anything herein
to the contrary, for purposes of any Stock Options that are granted effective on the Registration Date, the Fair Market Value
shall equal the initial public offering price of the Common Stock.

 

     
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2.23       
“Family Member” means “family member” as defined in Section A.1.(5) of the general instructions
of Form S-8, as may be amended from time to time.

 

2.24       
“HMRC”
means HM Revenue and Customs, the taxing authority in the United Kingdom.

 

2.25       
“Incentive Stock Option” means any Stock Option awarded to an Eligible Employee of the Company,
its Subsidiaries or its Parent intended to be and designated as an “Incentive Stock Option” within the meaning of
Section 422 of the Code.

 

2.26       
“Individual Target Award” has the meaning in Section 9.1.

 

2.27       
“Lead Underwriter” has the meaning in Section 13.24.

 

2.28       
 “Lock-Up Period” has the meaning in Section 13.24.

 

2.29       
 “Non-Employee Director” means a director of the Company or an Affiliate who is not an active employee
of the Company or an Affiliate.

 

2.30       
“Non-Qualified Stock Option” means any Stock Option that is not an Incentive Stock Option.

 

2.31       
“Other Extraordinary Event” has the meaning in Section 4.2(b).

 

2.32       
“Other Stock-Based Award” means an Award under Article VIII that is valued in whole or in part by
reference to, or is payable in or otherwise based on, Common Stock.

 

2.33       
“Parent” means any parent corporation of the Company within the meaning of Section 424(e) of the
Code.

 

2.34       
“Participant” means an Eligible Employee, Non-Employee Director or Consultant to whom an Award has
been granted pursuant to the Plan.

 

2.35       
“Performance-Based Cash Award” means a cash Award under Article IX that is payable or otherwise
based on the attainment of certain pre-established performance goals during a Performance Period.

 

2.36       
“Performance Criteria” has the meaning set forth in Exhibit A.

 

2.37       
“Performance Period” means each fiscal year of the Company or such other period (as specified by
the Committee) over which the attainment of performance goals is measured.

 

2.38       
“Performance Share” means an Other Stock-Based Award of the right to receive a number of shares
of Common Stock or cash of an equivalent value at the end of a specified Performance Period.

 

     
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2.39       
“Performance Unit” means an Other Stock-Based Award of the right to receive a fixed dollar amount,
payable in cash or Common Stock or a combination of both, at the end of a specified Performance Period.

 

2.40       
“Person” means any individual, entity (including any employee benefit plan or any trust for an employee
benefit plan) or group (within the meaning of Section 13(d)(3) or Section 14(d)(2) of the Exchange Act, or any successor provision).

 

2.41       
“Plan” means this Altimmune, Inc. 2017 Omnibus Incentive Plan, as amended from time to time.

 

2.42       
“Registration Date” means the first date on or after the Effective Date (a) on which the Company
sells its Common Stock in a bona fide, firm commitment underwriting pursuant to a registration statement under the Securities
Act or (b) any class of common equity securities of the Company is required to be registered under Section 12 of the
Exchange Act.

 

2.43       
“Restricted Stock” means an Award of shares of Common Stock that is subject to restrictions pursuant
to Article VII.

 

2.44       
“Restriction Period” has the meaning set forth in Section 7.3(a).

 

2.45       
“Rule 16b-3” means Rule 16b-3 under Section 16(b) of the Exchange Act as then in effect or any successor
provision.

 

2.46       
“Secondary Contributions” has the meaning in Section 13.4(b).

 

2.47       
“Secondary Contributor” has the meaning in Section 13.4(b).

 

2.48       
“Section 162(m)” means the exception for performance-based compensation under Section 162(m) of
the Code.

 

2.49       
“Section 4.2 Event” has the meaning set forth in Section 4.2(b).

 

2.50       
“Section 409A Covered Award” has the meaning set forth in Section 13.15.

 

2.51       
“Section 409A” means the nonqualified deferred compensation rules under Section 409A of the Code.

 

2.52       
“Securities Act” means the Securities Act of 1933, as amended and all rules and regulations promulgated
thereunder. Any reference to any section of the Securities Act shall also be a reference to any successor provision.

 

2.53       
“Stock Option” or “Option” means
any option to purchase shares of Common Stock granted to Eligible Employees, Non-Employee Directors or Consultants pursuant to
Article VI.

 

2.54       
“Subsidiary” means any subsidiary corporation of the Company within the meaning of Section 424(f)
of the Code.

 

2.55       
“Ten Percent Stockholder” means a person owning stock possessing more than 10% of the total combined
voting power of all classes of stock of the Company, its Subsidiaries or its Parent.

 

2.56       
“Termination” means a Termination of Consultancy, Termination of Directorship or Termination of
Employment, as applicable.

 

     
6

     

    

 

2.57       
“Termination of Consultancy” means: (a) that the Consultant is no longer acting as a consultant
to the Company or an Affiliate; or (b) when an entity that is retaining a Participant as a Consultant ceases to be an Affiliate
unless the Participant otherwise is, or thereupon becomes, a Consultant to the Company or another Affiliate at the time the entity
ceases to be an Affiliate. In the event that a Consultant becomes an Eligible Employee or a Non-Employee Director upon the termination
of his consultancy, unless otherwise determined by the Committee, no Termination of Consultancy shall be deemed to occur until
such time as such Consultant is no longer a Consultant, an Eligible Employee or a Non-Employee Director. Notwithstanding the foregoing,
the Committee may otherwise define Termination of Consultancy in the Award agreement or, if no rights of a Participant are reduced,
may otherwise define Termination of Consultancy thereafter.

 

2.58       
“Termination of Directorship” means that the Non-Employee Director has ceased to be a director of
the Company; except that if a Non-Employee Director becomes an Eligible Employee or a Consultant upon the termination of his directorship,
his ceasing to be a director of the Company shall not be treated as a Termination of Directorship unless and until the Participant
has a Termination of Employment or Termination of Consultancy, as the case may be.

 

2.59       
“Termination of Employment” means: (a) a termination of employment (for reasons other than
a military or approved personal leave of absence) of a Participant from the Company and its Affiliates; or (b) when an entity
that is employing a Participant ceases to be an Affiliate, unless the Participant otherwise is, or thereupon becomes, employed
by the Company or another Affiliate at the time the entity ceases to be an Affiliate. In the event that an Eligible Employee becomes
a Consultant or a Non-Employee Director upon the termination of his employment, unless otherwise determined by the Committee,
no Termination of Employment shall be deemed to occur until such time as such Eligible Employee is no longer an Eligible Employee,
a Consultant or a Non-Employee Director. Notwithstanding the foregoing, the Committee may otherwise define Termination of Employment
in the Award agreement or, if no rights of a Participant are reduced, may otherwise define Termination of Employment thereafter.

 

2.60       
“Transfer” means: (a) when used as a noun, any direct or indirect transfer, sale, assignment, pledge,
hypothecation, encumbrance or other disposition (including the issuance of equity in a Person), whether for value or no value
and whether voluntary or involuntary (including by operation of law), and (b) when used as a verb, to directly or indirectly transfer,
sell, assign, pledge, encumber, charge, hypothecate or otherwise dispose of (including the issuance of equity in a Person) whether
for value or for no value and whether voluntarily or involuntarily (including by operation of law). “Transferred”
and “Transferable” shall have a correlative meaning.

 

ARTICLE
III

ADMINISTRATION

 

3.1          
The Committee. The Plan shall be administered and interpreted by the Committee.

 

     
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3.2          
Grant and Administration of Awards. The Committee shall have full authority and discretion, as provided in Section
3.7, to grant and administer Awards including the authority to:

 

(a)       
select the Eligible Employees, Consultants and Non-Employee Directors to whom Awards may from time to time be granted;

 

(b)       
determine the number of shares of Common Stock to be covered by each Award;

 

(c)       
determine the type and the terms and conditions, not inconsistent with the terms of the Plan, of each Award (including,
but not limited to, the exercise or purchase price (if any), any restriction or limitation or any vesting schedule or acceleration
thereof);

 

(d)       
determine whether a Stock Option is an Incentive Stock Option or Non-Qualified Stock Option;

 

(e)       
determine whether to require a Participant, as a condition of the granting of any Award, to refrain from selling or otherwise
disposing of Common Stock acquired pursuant to such Award for a period of time as determined by the Committee;

 

(f)        
condition the grant, vesting or payment of any Award on the attainment of performance goals (including goals based on the
Performance Criteria) over a Performance Period, set such goals and such period, and certify the attainment of such goals;

 

(g)       
amend, after the date of grant, the terms that apply to an Award upon a Participant’s Termination, provided that such
amendment does not reduce the Participant’s rights under the Award;

 

(h)      
determine the circumstances under which Common Stock and other amounts payable with respect to an Award may be deferred
automatically or at the election of the Participant, in each case in a manner intended to comply with or be exempt from Section
409A;

 

(i)        
generally, exercise such powers and perform such acts as the Committee deems necessary or advisable to promote the best
interests of the Company in connection with the Plan that are not inconsistent with the provisions of the Plan;

 

(j)        
construe and interpret the terms and provisions of the Plan and any Award (and any agreements relating thereto); and

 

(k)       
correct any defect, supply any omission or reconcile any inconsistency in the Plan or in any agreement relating thereto.

 

3.3          
Award Agreements. All Awards shall be evidenced by, and subject to the terms and conditions of, a written notice
provided by the Company to the Participant or a written agreement executed by the Company and the Participant.

 

3.4          
Guidelines. The Committee shall have the authority to adopt, alter and repeal such administrative rules, guidelines
and practices governing the Plan as it shall, from time to time, deem necessary or advisable. The Committee may adopt special
guidelines and provisions for persons who are residing in or employed in, or subject to, the taxes of, any domestic or foreign
jurisdiction to comply with applicable tax and securities laws and may impose such limitations and restrictions that it deems
necessary or advisable to comply with the applicable tax and securities laws of such domestic or foreign jurisdiction.

 

     
8

     

    

 

3.5          
[Reserved].

 

3.6          
Delegation; Advisors. The Committee may, as it from time to time as it deems advisable, to the extent permitted by
applicable law and stock exchange rules: 

 

(a)       
delegate its responsibilities to officers or employees of the Company and its Affiliates, including delegating authority
to officers to grant Awards or execute agreements or other documents on behalf of the Committee; and

 

(b)       
engage legal counsel, consultants, professional advisors and agents to assist in the administration of the Plan and rely
upon any opinion or computation received from any such Person. Expenses incurred by the Committee or the Board in the engagement
of any such person shall be paid by the Company.

 

3.7          
Decisions Final. All determinations, evaluations, elections, approvals, authorizations, consents, decisions,
interpretations and other actions made or taken by or at the direction of the Company, the Board or the Committee (or any of its
members) arising out of or in connection with the Plan shall be within the sole and absolute discretion of all and each of them,
and shall be final, binding and conclusive on all employees and Participants and their respective beneficiaries, heirs, executors,
administrators, successors and assigns.

 

3.8          
Procedures. If the Committee is appointed, the Board shall designate one of the members of the Committee as
chairman and the Committee shall hold meetings, subject to the By-Laws of the Company, at such times and places as it shall deem
advisable, including by telephone conference or by written consent to the extent permitted by applicable law. A majority of the
Committee members shall constitute a quorum. All determinations of the Committee shall be made by a majority of its members. Any
decision or determination reduced to writing and signed by all of the Committee members in accordance with the By-Laws of the
Company, shall be fully effective as if it had been made by a vote at a meeting duly called and held. The Committee shall keep
minutes of its meetings and shall make such rules and regulations for the conduct of its business as it shall deem advisable.

 

3.9          
Liability; Indemnification.

 

(a)       
The Committee, its members and any delegate or Person engaged pursuant to Section 3.6 shall not be liable for any action
or determination made in good faith with respect to the Plan. To the maximum extent permitted by applicable law, no officer or
employee of the Company or any Affiliate or member or former member of the Committee or of the Board shall be liable for any action
or determination made in good faith with respect to the Plan or any Award granted under it.

 

(b)       
To the maximum extent permitted by applicable law and the Certificate of Incorporation and By-Laws of the Company and to
the extent not covered by insurance directly insuring such person, each current or former officer or employee of the Company or
any Affiliate and member of the Committee or the Board shall be indemnified and held harmless by the Company against any cost or
expense (including reasonable fees of counsel reasonably acceptable to the Committee) or liability (including any sum paid in settlement
of a claim with the approval of the Committee), and advanced amounts necessary to pay the foregoing at the earliest time and to
the fullest extent permitted, arising out of any act or omission to act in connection with the administration of the Plan, except
to the extent arising out of such person’s own fraud or bad faith. Such indemnification shall be in addition to any rights
of indemnification provided for under applicable law or under the Certificate of Incorporation or By-Laws of the Company or any
Affiliate. Notwithstanding anything else herein, this indemnification will not apply to the actions or determinations made by an
individual with regard to Awards granted to him.

 

     
9

     

    

 

ARTICLE
IV

SHARE LIMITATIONS

 

4.1          
Shares.

 

(a)       
General Limitations.

 

(i)            
Subject to Section 4.2, the aggregate number of shares of Common Stock which may be issued or used for reference purposes
or with respect to which Awards under the Plan may be granted over the term of the Plan is 1,500,000. Subject to Section 4.2, no
more than 1,500,000 shares of Common Stock in the aggregate may be issued under the Plan in respect of Incentive Stock Options.
At all times, the Company will reserve and keep available a sufficient number of Common Stock as will be required to satisfy the
requirements of all Awards granted and outstanding under the Plan. The aggregate share reserve specified in this Section 4.1(a)(i)
will be increased on January 1 of each year commencing in 2018 and ending on (and including) January 1, 2027 in an amount equal
to the least of: (i) 1,000,000 shares of Common Stock, (ii) four (4) percent (4%) of the total number of shares of Common Stock
outstanding on a fully diluted basis as of December 31 of the immediately preceding calendar year, and (iii) such number of shares
of Common Stock, if any, determined by the Board.

 

(ii)          
If any Appreciation Award expires, terminates or is canceled for any reason without having been exercised in full, the number
of shares of Common Stock underlying any unexercised portion shall again be available under the Plan. If shares of Restricted Stock
or Other Stock-Based Awards that are not Appreciation Awards are forfeited for any reason, the number of forfeited shares comprising
or underlying the Award shall again be available under the Plan.

 

(iii)         
Shares of Common Stock that are not issued pursuant to net settlement or which are used to pay any exercise price or tax
withholding obligation with respect to any Award shall not be available under the Plan. Notwithstanding anything to the contrary
herein, Awards that may be settled solely in cash shall not be deemed to use any shares under the Plan.

 

(iv)         
Shares issued under the Plan may be either authorized and unissued Common Stock or Common Stock held in or acquired for
the treasury of the Company, or both.

 

(b)       
Individual Participant Limitations. Except as otherwise provided herein, at all times:

 

(i)            
the maximum number of shares of Common Stock that may be made subject to Stock Options, Restricted Stock or Other Stock-Based
Awards denominated in shares of Common Stock granted to each Eligible Employee or Consultant during any fiscal year of the Company
is 800,000 shares per type of Award (subject to increase or decrease pursuant to Section 4.2); provided that the maximum number
of shares of Common Stock for all types of Awards during any fiscal year of the Company that may be granted to each Eligible Employee
or Consultant is 800,000 (subject to increase or decrease pursuant to Section 4.2); and

 

     
10

     

    

 

(ii)          
the aggregate amount of compensation to be paid to any one Participant in respect of all Other Stock-Based Awards denominated
in dollars and Performance-Based Cash Awards, and granted to such Participant in any one fiscal year of the Company, shall not
exceed $5,000,000 and any Awards that are cancelled during the year shall be counted against this limit to the extent required
by Section 162(m) of the Code; provided, further, that the foregoing limit shall be adjusted on a proportionate basis
for any Performance Period that is not based on one fiscal year of the Company;

 

(iii)         
the maximum number of shares of Common Stock that may be made subject to Awards granted to each Non-Employee Director during
any fiscal year of the Company is 500,000 shares (subject to increase or decrease pursuant to Section 4.2);

 

4.2          
Changes.

 

(a)       
The existence of the Plan and the Awards shall not affect in any way the right or power of the Board or the stockholders
of the Company to make or authorize (i) any adjustment, recapitalization, reorganization or other change in the Company’s
capital structure or its business, (ii) any merger or consolidation of the Company or any Affiliate, (iii) any issuance of bonds,
debentures, preferred or prior preference stock ahead of or affecting the Common Stock, (iv) the dissolution or liquidation of
the Company or any Affiliate, (v) any sale or transfer of all or part of the assets or business of the Company or any Affiliate,
(vi) any Section 4.2 Event or (vii) any other corporate act or proceeding.

 

(b)       
Subject to the provisions of Section 4.2(d), in the event of any change in the capital structure or business of the Company
by reason of any stock split, reverse stock split, stock dividend, combination or reclassification of shares, recapitalization,
merger, consolidation, spin off, split off, reorganization or partial or complete liquidation, issuance of rights or warrants to
purchase Common Stock or securities convertible into Common Stock, sale or transfer of all or part of the Company’s assets
or business, or other corporate transaction or event that would be considered an “equity restructuring” within the
meaning of FASB ASC Topic 718 (each, a “Section 4.2 Event”), then (i) the aggregate number or kind of
shares that thereafter may be issued under the Plan, (ii) the number or kind of shares or other property (including cash) subject
to an Award, (iii) the purchase or exercise price of Awards, or (iv) the individual Participant limits set forth in Section
4.1(b) (other than cash limitations) shall be adjusted by the Committee as the Committee determines, in good faith, to be necessary
or advisable to prevent substantial dilution or enlargement of the rights of Participants under the Plan. In connection with any
Section 4.2 Event, the Committee may provide for the cancellation of outstanding Awards and payment in cash or other property in
exchange therefor. In addition, subject to Section 4.2(d), in the event of any change in the capital structure of the Company that
is not a Section 4.2 Event (an “Other Extraordinary Event”), then the Committee may make the adjustments
described in clauses (i) through (iv) above as it determines, in good faith, to be necessary or advisable to prevent substantial
dilution or enlargement of the rights of Participants under the Plan. Notice of any such adjustment shall be given by the Committee
to each Participant whose Award has been adjusted and such adjustment (whether or not such notice is given) shall be binding for
all purposes of the Plan. Except as expressly provided in this Section 4.2(b) or in the applicable Award agreement, a Participant
shall have no rights by reason of any Section 4.2 Event or any Other Extraordinary Event. Notwithstanding the foregoing, (x) any
adjustments made pursuant to Section 4.2(b) to Awards that are considered “non-qualified deferred compensation” within
the meaning of Section 409A shall be made in a manner intended to comply with the requirements of Section 409A; and (y) any adjustments
made pursuant to Section 4.2(b) to Awards that are not considered “non-qualified deferred compensation” subject to
Section 409A shall be made in a manner intended to ensure that after such adjustment, the Awards either (A) continue to be exempt
from Section 409A or (B) comply with the requirements of Section 409A.

 

     
11

     

    

 

(c)       
Fractional shares of Common Stock resulting from any adjustment in Awards pursuant to Section 4.2(a) or (b) shall be aggregated
until, and eliminated at, the time of exercise by rounding-down for fractions less than one-half and rounding-up for fractions
equal to or greater than one-half. No cash settlements shall be made with respect to fractional shares eliminated by rounding.

 

(d)       
Upon the occurrence of an Acquisition Event, the Committee may terminate all outstanding and unexercised Stock Options or
any Other Stock-Based Award that provides for a Participant-elected exercise (collectively, “Exercisable Awards”),
effective as of the date of the Acquisition Event, by delivering notice of termination to each Participant at least 20 days prior
to the date of consummation of the Acquisition Event, in which case during the period from the date on which such notice of termination
is delivered to the consummation of the Acquisition Event, each such Participant shall have the right to exercise in full all of
such Exercisable Awards that are then outstanding to the extent vested on the date such notice of termination is given (or, at
the discretion of the Committee, without regard to any limitations on exercisability otherwise contained in the Award agreements),
but any such exercise shall be contingent on the occurrence of the Acquisition Event, and, provided that, if the Acquisition
Event does not take place within a specified period after giving such notice for any reason whatsoever, the notice and exercise
pursuant thereto shall be null and void and the applicable provisions of Section 4.2(b) and Article X shall apply. For the avoidance
of doubt, in the event of an Acquisition Event, the Committee may terminate any Exercisable Award for which the exercise price
is equal to or exceeds the Fair Market Value on the date of the Acquisition Event without payment of consideration therefor. If
an Acquisition Event occurs but the Committee does not terminate the outstanding Awards pursuant to this Section 4.2(d), then the
provisions of Section 4.2(b) and Article X shall apply.

 

4.3          
Minimum Purchase Price. Notwithstanding any provision of the Plan to the contrary, if authorized but previously
unissued shares of Common Stock are issued under the Plan, such shares shall not be issued for a consideration that is less than
permitted under applicable law.

 

ARTICLE
V

ELIGIBILITY

 

5.1          
General Eligibility. All current and prospective Eligible Employees and Consultants, and current Non-Employee
Directors, are eligible to be granted Awards. Eligibility for the grant of Awards and actual participation in the Plan shall be
determined by the Committee in its sole discretion. Notwithstanding anything herein to the contrary, no Award under which a Participant
may receive shares of Common Stock may be granted to an Eligible Employee, Consultant or Non-Employee Director of any Affiliate
if such shares of Common Stock do not constitute “service recipient stock” for purposes of Section 409A with respect
to such Eligible Employee, Consultant or Non-Employee Director if such shares are required to constitute “service recipient
stock” for such Award to comply with, or be exempt from, Section 409A of the Code.

 

     
12

     

    

 

5.2          
Incentive Stock Options. Notwithstanding anything herein to the contrary, only Eligible Employees of the Company,
its Subsidiaries and its Parent (if any) are eligible to be granted Incentive Stock Options under the Plan. Eligibility for the
grant of an Incentive Stock Option and actual participation in the Plan shall be determined by the Committee.

 

5.3          
General Requirement. The grant of Awards to a prospective Eligible Employee or Consultant and the vesting and
exercise of such Awards shall be conditioned upon such Person actually becoming an Eligible Employee or Consultant; provided,
however, that no Award may be granted to a prospective Eligible Employee or Consultant unless the Company determines that
the Award will comply with applicable laws, including the securities laws of all relevant jurisdictions (and, in the case of an
Award to an Eligible Employee or Consultant pursuant to which Common Stock would be issued prior to such Person performing services
for the Company, the Company may require payment of not less than the par value of the Common Stock by cash or check in order
to ensure proper issuance of the shares in compliance with applicable law). Awards may be awarded in consideration for past services
actually rendered to the Company or an Affiliate.

 

ARTICLE
VI

STOCK OPTIONS

 

6.1          
Stock Options. Each Stock Option shall be one of two types: (a) an Incentive Stock Option or (b) a
Non-Qualified Stock Option. The Committee shall have the authority to grant to any Eligible Employee Incentive Stock Options,
Non-Qualified Stock Options, or both types of Stock Options. The Committee shall have the authority to grant any Consultant or
Non-Employee Director Non-Qualified Stock Options. To the extent that any Stock Option does not qualify as an Incentive Stock
Option (whether because of its provisions or the time or manner of its exercise or otherwise), such Stock Option or the portion
thereof that does not qualify shall constitute a separate Non-Qualified Stock Option.

 

6.2          
Incentive Stock Options. Notwithstanding anything in the Plan to the contrary, no term of the Plan relating
to Incentive Stock Options shall be interpreted, amended or altered, nor shall any discretion or authority granted under the Plan
be so exercised, so as to disqualify the Plan under Section 422 of the Code, or, without the consent of the Participants
affected, to disqualify any Incentive Stock Option under Section 422 of the Code.

 

6.3          
Terms of Stock Options. Stock Options granted under the Plan shall be subject to the following terms and conditions
and shall be in such form and contain such additional terms and conditions, not inconsistent with the terms of the Plan, as the
Committee shall deem desirable:

 

     
13

     

    

 

(a)       
Exercise Price. The exercise price per share of Common Stock subject to a Stock Option shall be determined by the
Committee on or before the date of grant, provided that the per share exercise price of a Stock Option shall not be less than 100%
(or, in the case of an Incentive Stock Option granted to a Ten Percent Stockholder, 110%) of the Fair Market Value of the Common
Stock on the date of grant.

 

(b)       
Stock Option Term. The term of each Stock Option shall be fixed by the Committee, provided that no Stock Option
shall be exercisable more than ten years after the date such Stock Option is granted (or, in the case of an Incentive Stock Option
granted to a Ten Percent Stockholder, five years).

 

(c)       
Exercisability.

 

(i)            
Stock Options shall be exercisable at such time or times and subject to such terms and conditions as shall be determined
by the Committee in the applicable Award agreement. The Committee may waive any limitations on exercisability at any time at or
after grant in whole or in part, in its discretion.

 

(ii)          
Unless otherwise determined by the Committee in the applicable Award agreement, (A) in the event the Participant engages
in Detrimental Activity prior to any exercise of the Stock Option, all Stock Options held by the Participant shall thereupon terminate
and expire, (B) as a condition of the exercise of a Stock Option, the Participant shall be required to certify in a manner acceptable
to the Company (or shall be deemed to have certified) that the Participant is in compliance with the terms and conditions of the
Plan and that the Participant has not engaged in, and does not intend to engage in, any Detrimental Activity, and (C) in the event
the Participant engages in Detrimental Activity during the one-year period commencing on the earlier of the date the Stock Option
is exercised or the date of the Participant’s Termination, the Company shall be entitled to recover from the Participant
at any time within one year after such date, and the Participant shall pay over to the Company, an amount equal to any gain realized
(whether at the time of exercise or thereafter) as a result of the exercise. Unless otherwise determined by the Committee in the
applicable Award agreement, this Section 6.3(c)(ii) shall cease to apply upon a Change in Control.

 

(d)       
Method of Exercise. To the extent vested, a Stock Option may be exercised in whole or in part at any time during
the Option term, by giving written notice of exercise to the Committee (or its designee) specifying the number of shares of Common
Stock to be purchased. Such notice shall be in a form acceptable to the Committee and shall be accompanied by payment in full of
the purchase price as follows: (i) in cash or by check, bank draft or money order payable to the order of the Company; (ii) solely
to the extent permitted by applicable law and authorized by the Committee, if the Common Stock is traded on a national securities
exchange or quoted on a national quotation system sponsored by the Financial Industry Regulatory Authority, through a procedure
whereby the Participant delivers irrevocable instructions to a broker reasonably acceptable to the Committee to deliver promptly
to the Company an amount equal to the purchase price; or (iii) on such other terms and conditions as may be acceptable to the Committee
(including the relinquishment of Stock Options or by payment in full or in part in the form of Common Stock owned by the Participant
(for which the Participant has good title free and clear of any liens and encumbrances)). No shares of Common Stock shall be issued
until payment therefor, as provided herein, has been made or provided for.

 

     
14

     

    

 

(e)       
Non-Transferability of Options. No Stock Option shall be Transferable by the Participant other than by will or by
the laws of descent and distribution, and all Stock Options shall be exercisable, during the Participant’s lifetime, only
by the Participant. Notwithstanding the foregoing, the Committee may determine that a Non-Qualified Stock Option that otherwise
is not Transferable pursuant to this section is Transferable to a Family Member in whole or in part, and in such circumstances,
and under such conditions as specified by the Committee. A Non-Qualified Stock Option that is Transferred to a Family Member pursuant
to the preceding sentence (i) may not be Transferred subsequently other than by will or by the laws of descent and distribution
and (ii) remains subject to the terms of the Plan and the applicable Award agreement. Any shares of Common Stock acquired upon
the exercise of a Non-Qualified Stock Option by a permissible transferee of a Non-Qualified Stock Option or a permissible transferee
pursuant to a Transfer after the exercise of the Non-Qualified Stock Option shall be subject to the terms of this Plan and the
applicable Award agreement.

 

(f)        
Termination by Death or Disability. Unless otherwise determined by the Committee at grant (or,
if no rights of the Participant (or, in the case of his death, his estate) are reduced, thereafter), if a Participant’s
Termination is by reason of death or Disability, all Stock Options that are held by such Participant that are vested and exercisable
on the date of the Participant’s Termination may be exercised by the Participant (or, in the case of death, by the legal
representative of the Participant’s estate) at any time within a period of one year after the date of such Termination, but
in no event beyond the expiration of the stated term of such Stock Options.

 

(g)       
Involuntary Termination Without Cause. Unless otherwise determined by the Committee at grant (or,
if no rights of the Participant (or, in the case of his death, his estate) are reduced, thereafter), if a Participant’s
Termination is by involuntary termination by the Company or an Affiliate without Cause, all Stock Options that are held by such
Participant that are vested and exercisable on the date of the Participant’s Termination may be exercised by the Participant
at any time within a period of 90 days after the date of such Termination, but in no event beyond the expiration of the stated
term of such Stock Options.

 

(h)      
Voluntary Termination. Unless otherwise determined by the Committee at grant (or,
if no rights of the Participant (or, in the case of his death, his estate) are reduced, thereafter), if a Participant’s
Termination is voluntary (other than a voluntary Termination described in subsection (i)(B) below), all Stock Options that are
held by such Participant that are vested and exercisable on the date of the Participant’s Termination may be exercised by
the Participant at any time within a period of 30 days after the date of such Termination, but in no event beyond the expiration
of the stated term of such Stock Options.

 

(i)        
Termination for Cause. Unless otherwise determined by the Committee at grant (or,
if no rights of the Participant (or, in the case of his death, his estate) are reduced, thereafter), if a Participant’s
Termination (A) is for Cause or (B) is a voluntary Termination after the occurrence of an event that would be grounds for a Termination
for Cause, all Stock Options, whether vested or not vested, that are held by such Participant shall terminate and expire on the
date of such Termination.

 

(j)        
Unvested Stock Options. Unless otherwise determined by the Committee, Stock Options that are not vested as of the
date of a Participant’s Termination for any reason shall terminate and expire on the date of such Termination.

 

     
15

     

    

 

(k)       
Incentive Stock Option Limitations. To the extent that the aggregate Fair Market Value (determined as of the date
of grant) with respect to which Incentive Stock Options are exercisable for the first time by an Eligible Employee during any calendar
year under the Plan and any other stock option plan of the Company, any Subsidiary or any Parent exceeds $100,000, such Incentive
Stock Options shall be treated as Non-Qualified Stock Options. In addition, if an Eligible Employee does not remain employed by
the Company, any Subsidiary or any Parent at all times from the date an Incentive Stock Option is granted until three months prior
to the date of exercise thereof (or such other period as required by applicable law), such Stock Option shall be treated as a Non-Qualified
Stock Option. Should any provision of the Plan not be necessary in order for the Stock Options to qualify as Incentive Stock Options,
or should any additional provisions be required, the Committee may amend the Plan accordingly, without the necessity of obtaining
the approval of the stockholders of the Company.

 

(l)        
Form, Modification, Extension and Renewal of Stock Options. Stock Options may be evidenced by such form of agreement
as is approved by the Committee. The Committee may (i) modify, extend or renew outstanding Stock Options (provided that
(A) the rights of a Participant are not reduced without his consent and (B) such action does not subject the Stock Options to Section
409A or otherwise extend the Stock Options beyond their stated term), and (ii) accept the surrender of outstanding Stock Options
and authorize the granting of new Stock Options in substitution therefor. Notwithstanding anything herein to the contrary, an outstanding
Option may not be modified to reduce the exercise price thereof nor may a new Option at a lower exercise price be substituted for
a surrendered Option (other than adjustments or substitutions in accordance with Section 4.2), unless such action is approved by
the stockholders of the Company.

 

(m)     
No Reload Options. Options shall not provide for the grant of the same number of Options as the number of shares
used to pay for the exercise price of Options or shares used to pay withholding taxes (i.e., “reloads”).

 

ARTICLE
VII

RESTRICTED STOCK

 

7.1          
Awards of Restricted Stock. The Committee shall determine the Participants to whom, and the time or times at
which, grants of Restricted Stock shall be made, the number of shares to be awarded, the purchase price (if any) to be paid by
the Participant (subject to Section 7.2), the time or times at which such Awards may be subject to forfeiture or to restrictions
on transfer, and all other terms and conditions of the Awards.

 

Unless otherwise determined
by the Committee in the applicable Award agreement, (A) in the event the Participant engages in Detrimental Activity prior to any
vesting of Restricted Stock, all unvested Restricted Stock shall be immediately forfeited, and (B) in the event the Participant
engages in Detrimental Activity during the one year period after any vesting of such Restricted Stock, the Committee shall be entitled
to recover from the Participant (at any time within one year after such engagement in Detrimental Activity) an amount equal to
the Fair Market Value as of the vesting date(s) of any Restricted Stock that had vested in the period referred to above. Unless
otherwise determined by the Committee in the applicable Award agreement, this paragraph shall cease to apply upon a Change in Control.

 

     
16

     

    

 

The Committee may condition
the grant or vesting of Restricted Stock upon the attainment of specified performance goals (including goals based on the Performance
Criteria) or such other factors as the Committee may determine.

 

7.2          
Awards and Certificates. The Committee may require, as a condition to the effectiveness of an Award of Restricted
Stock, that the Participant execute and deliver to the Company an Award agreement or other documentation and comply with the terms
of such Award agreement or other documentation. Further, Restricted Stock shall be subject to the following conditions:

 

(a)       
Purchase Price. The purchase price of Restricted Stock, if any, shall be fixed by the Committee. In accordance with
Section 4.3, the purchase price for shares of Restricted Stock may be zero to the extent permitted by applicable law, and, to the
extent not so permitted, such purchase price may not be less than par value.

 

(b)       
Legend. Each Participant receiving Restricted Stock shall be issued a stock certificate in respect of such shares
of Restricted Stock, unless the Committee elects to use another system, such as book entries by the transfer agent, as evidencing
ownership of shares of Restricted Stock. Such certificate shall be registered in the name of such Participant, and shall, in addition
to such legends required by applicable securities laws, bear an appropriate legend referring to the terms, conditions, and restrictions
applicable to such Award, substantially in the following form:

 

“The anticipation, alienation,
attachment, sale, transfer, assignment, pledge, encumbrance or charge of the shares of stock represented hereby are subject to
the terms and conditions (including forfeiture) of the Altimmune, Inc. (the “Company”) 2017 Omnibus Incentive
Plan (as amended from time to time, the “Plan”), and an Award Agreement entered into between the registered
owner and the Company dated __________. Copies of such Plan and Agreement are on file at the principal office of the Company.”

 

(c)       
Custody. If stock certificates are issued in respect of shares of Restricted Stock, the Committee may require that
any stock certificates evidencing such shares be held in custody by the Company until the restrictions thereon shall have lapsed,
and that, as a condition of any grant of Restricted Stock, the Participant shall have delivered a duly signed stock power or other
instruments of assignment (including a power of attorney), each endorsed in blank with a guarantee of signature if deemed necessary
or appropriate by the Company, which would permit transfer to the Company of all or a portion of the shares subject to the Award
of Restricted Stock in the event that such Award is forfeited in whole or part.

 

7.3          
Restrictions and Conditions. Restricted Stock shall be subject to the following restrictions and conditions:

 

(a)       
Restriction Period.

 

(i)            
The Participant shall not be permitted to Transfer shares of Restricted Stock, and the Restricted Stock shall be subject
to a risk of forfeiture (collectively, “restrictions”) during the period or periods set by the Committee (the “Restriction
Periods”), as set forth in the Restricted Stock Award agreement. The Committee may provide for the lapse of the restrictions
in whole or in part (including in installments) based on service, attainment of performance goals or such other factors or criteria
as the Committee may determine, and may waive all or any part of the restrictions at any time subject to Section 7.3(a)(iii).

 

     
17

     

    

 

(ii)          
If the grant of Restricted Stock or the lapse of restrictions is based on the attainment of performance goals, such performance
goals shall be established by the Committee in writing on or before the date the grant of Restricted Stock is made and while the
outcome of the performance goals is substantially uncertain and that is permitted under Section 162(m) with regard to an Award
of Restricted Stock that is intended to comply with Section 162(m). Such performance goals may incorporate provisions for disregarding
(or adjusting for) changes in accounting methods, corporate transactions (including dispositions and acquisitions) and other similar
events or circumstances. With regard to an Award of Restricted Stock that is intended to comply with Section 162(m), (A) to the
extent that any such provision set forth in the prior sentence would create impermissible discretion under Section 162(m) or otherwise
violate Section 162(m), such provision shall be of no force or effect and (B) the applicable performance goals shall be based on
one or more of the Performance Criteria.

 

(b)       
Rights as a Stockholder. Except as otherwise determined by the Committee, the Participant shall have all the rights
of a holder of shares of Common Stock of the Company with respect to Restricted Stock, subject to the following provisions of this
Section 7.3(b). Except as otherwise determined by the Committee, (i) the Participant shall have no right to tender shares of Restricted
Stock, (ii) dividends or other distributions (collectively, “dividends”) on shares of Restricted Stock shall be withheld,
in each case, while the Restricted Stock is subject to restrictions, and (iii) in no event shall dividends or other distributions
payable thereunder be paid unless and until the shares of Restricted Stock to which they relate no longer are subject to a risk
of forfeiture. Dividends that are not paid currently shall be credited to bookkeeping accounts on the Company’s records for
purposes of the Plan and, except as otherwise determined by the Committee, shall not accrue interest. Such dividends shall be paid
to the Participant in the same form as paid on the Common Stock upon the lapse of the restrictions. The obligation of the Company
to pay any dividends hereunder upon lapse of the applicable restrictions shall be a general, unsecured obligation of the Company
payable solely from the general assets of the Company. In no event shall the Company be required, or have any obligation, to set
aside, or hold in escrow or trust, any funds for the purpose of paying such dividends.

 

(c)       
Termination. Upon a Participant’s Termination for any reason during the Restriction Period, all Restricted
Stock still subject to restriction will vest or be forfeited in accordance with the terms and conditions established by the Committee
at grant, or, if no rights of a Participant are reduced, thereafter.

 

(d)       
Lapse of Restrictions. If and when the Restriction Period expires without a prior forfeiture of the Restricted Stock,
the certificates for such shares shall be delivered to the Participant, and any and all unpaid distributions or dividends payable
thereunder shall be paid. All legends shall be removed from said certificates at the time of delivery to the Participant, except
as otherwise required by applicable law or other limitations imposed by the Committee.

 

     
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ARTICLE
VIII

OTHER STOCK-BASED AWARDS

 

8.1          
Other Awards. The Committee is authorized to grant Other Stock-Based Awards that are payable in, valued in whole
or in part by reference to, or otherwise based on or related to shares of Common Stock, including but not limited to, shares of
Common Stock awarded purely as a bonus and not subject to any restrictions or conditions, shares of Common Stock in payment of
the amounts due under an incentive or performance plan sponsored or maintained by the Company or an Affiliate, stock appreciation
rights, stock equivalent units, restricted stock units, Performance Shares, Performance Units and Awards valued by reference to
book value of shares of Common Stock.

 

The Committee shall
have authority to determine the Participants to whom, and the time or times at which, Other Stock-Based Awards shall be made, the
number of shares of Common Stock to be awarded pursuant to such Awards, and all other terms and conditions of the Awards.

 

The Committee may condition
the grant or vesting of Other Stock-Based Awards upon the attainment of performance goals (including, performance goals based on
the Performance Criteria) or such other factors as the Committee may determine. If the grant or vesting of an Other Stock-Based
Award is based on the attainment of performance goals, such performance goals shall be established by the Committee in writing
on or before the date the grant of Other Stock-Based Award is made and while the outcome of the performance goals is substantially
uncertain and that is permitted under Section 162(m) with regard to an Other Stock-Based Award that is intended to comply with
Section 162(m). Such performance goals may incorporate provisions for disregarding (or adjusting for) changes in accounting methods,
corporate transactions (including dispositions and acquisitions) and other similar events or circumstances. With regard to an Other
Stock-Based Award that is intended to comply with Section 162(m), (a) to the extent any such provision set forth in the prior sentence
would create impermissible discretion under Section 162(m) or otherwise violate Section 162(m), such provision shall be of no force
or effect and (b) the applicable performance goals shall be based on one or more of the Performance Criteria.

 

8.2          
Terms and Conditions. Other Stock-Based Awards made pursuant to this Article VIII shall be subject to the following
terms and conditions:

 

(a)       
Non-Transferability. The Participant may not Transfer Other Stock-Based Awards or the Common Stock underlying such
Awards prior to the date on which the underlying Common Stock is issued, or, if later, the date on which any restriction, performance
or deferral period applicable to such Common Stock lapses.

 

(b)       
Dividends. The Committee shall determine to what extent, and under what conditions, the Participant shall have the
right to receive dividends, dividend equivalents or other distributions (collectively, “dividends”) with respect to
shares of Common Stock covered by Other Stock-Based Awards. Except as otherwise determined by the Committee, dividends with respect
to unvested Other Stock-Based Awards shall be withheld until such Other Stock-Based Awards vest. Dividends that are not paid currently
shall be credited to bookkeeping accounts on the Company’s records for purposes of the Plan and, except as otherwise determined
by the Committee, shall not accrue interest. Such dividends shall be paid to the Participant in the same form as paid on the Common
Stock or such other form as is determined by the Committee upon the lapse of the restrictions. The obligation of the Company to
pay any dividends hereunder upon lapse of the applicable restrictions shall be a general, unsecured obligation of the Company payable
solely from the general assets of the Company. In no event shall the Company be required, or have any obligation, to set aside,
or hold in escrow or trust, any funds for the purpose of paying such dividends.

 

     
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(c)       
Vesting. Other Stock Based Awards and any underlying Common Stock shall vest or be forfeited to the extent set forth
in the applicable Award agreement or as otherwise determined by the Committee. At the expiration of any applicable Performance
Period, the Committee shall determine the extent to which the relevant performance goals are achieved and the portion of each Other
Stock-Based Award that has been earned. The Committee may, at or after grant, accelerate the vesting of all or any part of any
Other Stock-Based Award.

 

(d)       
Payment. Following the Committee’s determination in accordance with subsection (c) above, shares of Common
Stock or, as determined by the Committee, the cash equivalent of such shares, shall be delivered to the Participant, or his legal
representative, in an amount equal to such individual’s earned Other Stock-Based Award. Notwithstanding the foregoing, the
Committee may exercise negative discretion by providing in an Other Stock-Based Award the discretion to pay an amount less than
otherwise would be provided under the applicable level of attainment of the performance goals or subject the payment of all or
part of any Other Stock-Based Award to additional vesting, forfeiture and deferral conditions as it deems appropriate.

 

(e)       
Detrimental Activity. Unless otherwise determined by the Committee in the applicable Award agreement, (A) in the
event the Participant engages in Detrimental Activity prior to any vesting of such Other Stock-Based Award, all unvested Other
Stock-Based Award shall be immediately forfeited, and (B) in the event the Participant engages in Detrimental Activity during the
one year period after any vesting of such Other Stock-Based Award, the Committee shall be entitled to recover from the Participant
(at any time within the one-year period after such engagement in Detrimental Activity) an amount equal to any gain the Participant
realized from any Other Stock-Based Award that had vested in the period referred to above. Unless otherwise determined by the Committee
in the applicable Award agreement, this Section 8.2(e) shall cease to apply upon a Change in Control.

 

(f)        
Price. Common Stock issued on a bonus basis under this Article VIII may be issued for no cash consideration; Common
Stock purchased pursuant to a purchase right awarded under this Article VIII shall be priced as determined by the Committee.

 

(g)       
Termination. Upon a Participant’s Termination for any reason during the Performance Period, the Other Stock-Based
Awards will vest or be forfeited in accordance with the terms and conditions established by the Committee at grant or, if no rights
of the Participant are reduced, thereafter.

 

     
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ARTICLE
IX

PERFORMANCE-BASED CASH AWARDS

 

9.1          
Performance-Based Cash Awards. The Committee shall have authority to determine the Eligible Employees and Consultants
to whom, and the time or times at which, Performance-Based Cash Awards shall be made, the dollar amount to be awarded pursuant
to such Performance-Based Cash Award, and all other conditions for the payment of the Performance-Based Cash Award.

 

Except as otherwise
provided herein, the Committee shall condition the right to payment of any Performance-Based Cash Award upon the attainment of
specified performance goals (including performance goals based on the Performance Criteria) established pursuant to Section 9.2(c)
and such other factors as the Committee may determine, including to comply with the requirements of Section 162(m). The Committee
may establish different performance goals for different Participants.

 

Subject to Section 9.2(c),
for any Participant the Committee may specify a targeted Performance-Based Cash Award for a Performance Period (each an “Individual
Target Award”).  An Individual Target Award may be expressed, at the Committee’s discretion, as a fixed dollar
amount, a percentage of the Participant’s base pay, as a percentage of a bonus pool funded by a formula based on achievement
of performance goals, or an amount determined pursuant to an objective formula or standard.  The Committee’s establishment
of an Individual Target Award for a Participant for a Performance Period shall not imply or require that the same level or any
Individual Target Award be established for the Participant for any subsequent Performance Period or for any other Participant for
that Performance Period or any subsequent Performance Period.  At the time the performance goals are established (as provided
in Section 9.2(c)), the Committee shall prescribe a formula to determine the maximum and minimum percentages (which may be
greater or less than 100% of an Individual Target Award) that may be earned or payable based upon the degree of attainment of the
performance goals during the Performance Period.  Notwithstanding anything else herein, the Committee may exercise negative
discretion by providing in an Individual Target Award the discretion to pay a Participant an amount that is less than the Participant’s
Individual Target Award (or attained percentages thereof) regardless of the degree of attainment of the performance goals; provided
that, except as otherwise specified by the Committee with respect to an Individual Target Award, no discretion to reduce a Performance-Based
Cash Award earned based on achievement of the applicable performance goals shall be permitted for any Performance Period in which
a Change in Control occurs, or during such Performance Period with regard to the prior Performance Periods if the Performance-Based
Cash Awards for the prior Performance Periods have not been paid by the time of the Change in Control, with regard to individuals
who were Participants at the time of the Change in Control.

 

9.2          
Terms and Conditions. Performance-Based Cash Awards shall be subject to the following terms and conditions:

 

(a)       
Committee Certification.  At the expiration of the applicable Performance Period, the Committee shall determine
and certify in writing the extent to which the performance goals established pursuant to Section 9.2(c) are achieved
and, if applicable, the percentage of the Performance-Based Cash Award that has been vested and earned.

 

     
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(b)       
Waiver of Limitation.  In the event of the Participant’s Disability or death, or in cases of special circumstances
(to the extent permitted under Section 162(m) with regard to a Performance-Based Cash Award that is intended to comply with
Section 162(m)), the Committee may waive in whole or in part any or all of the limitations imposed thereunder with respect
to any or all of a Performance-Based Cash Award.

 

(c)       
Performance Goals, Formulae or Standards.  The performance goals for the earning of Performance-Based Cash Awards
shall be established by the Committee in writing on or before the date the grant of Performance-Based Cash Award is made and while
the outcome of the performance goals is substantially uncertain and that is permitted under Section 162(m) with regard to
a Performance-Based Cash Award that is intended to comply with Section 162(m). Such performance goals may incorporate provisions
for disregarding (or adjusting for) changes in accounting methods, corporate transactions (including dispositions and acquisitions)
and other similar type events or circumstances. With regard to a Performance-Based Cash Award that is intended to comply with Section 162(m),
(i) to the extent any such provision set forth in the prior sentence would create impermissible discretion under Section 162(m)
or otherwise violate Section 162(m), such provision shall be of no force or effect and (ii) the applicable performance
goals shall be based on one or more of the Performance Criteria.

 

(d)       
Payment.  Following the Committee’s determination and certification in accordance with subsection (a)
above, the earned Performance-Based Cash Award amount shall be paid to the Participant or his legal representative, in accordance
with the terms and conditions set forth in the Performance-Based Cash Award agreement, but in no event, except as provided in the
next sentence, shall such amount be paid later than the later of: (i) March 15 of the year following the year in which
the applicable Performance Period ends (or, if later, the year in which the Award is earned); or (ii) two and one-half months
after the expiration of the fiscal year of the Company in which the applicable Performance Period ends.  Notwithstanding the
foregoing, the Committee may place such conditions on the payment of all or any portion of any Performance-Based Cash Award as
the Committee may determine and prior to the beginning of a Performance Period, the Committee may (A) provide that the payment
of all or any portion of any Performance-Based Cash Award shall be deferred and (B) permit a Participant to elect to defer
receipt of all or a portion of any Performance-Based Cash Award.  Any Performance-Based Cash Award deferred by a Participant
in accordance with the terms and conditions established by the Committee shall not increase (between the date on which the Performance-Based
Cash Award is credited to any deferred compensation program applicable to such Participant and the payment date) by an amount that
would result in such deferral being deemed as an “increase in the amount of compensation” under Section 162(m). 
To the extent applicable, any deferral under this Section 9.2(d) shall be made in a manner intended to comply with or
be exempt from the applicable requirements of Section 409A. Notwithstanding the foregoing, the Committee may exercise negative
discretion by providing in a Performance-Based Cash Award the discretion to pay an amount less than otherwise would be provided
under the applicable level of attainment of the performance goals.

 

(e)       
Termination. Unless otherwise determined by the Committee at the time of grant (or, if no rights of the Participant
(or, in the case of his death, his estate) are reduced, thereafter), no Performance-Based Cash Award or pro rata portion thereof
shall be payable to any Participant who incurs a Termination prior to the date such Performance-Based Cash Award is paid and the
Performance-Based Cash Awards only shall be deemed to be earned when actually paid.

 

     
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ARTICLE
X

CHANGE IN CONTROL PROVISIONS

 

10.1       
In the event of a Change in Control of the Company, except as otherwise provided by the
Committee in an Award agreement or otherwise in writing, a Participant’s unvested Award shall not vest and a Participant’s
Award shall be treated in accordance with one of the following methods as determined by the Committee:

 

(a)       
Awards, whether or not then vested, may be continued, assumed, have new rights substituted therefor or be treated in accordance
with Section 4.2(d), and Restricted Stock or other Awards may, where appropriate in the discretion of the Committee, receive the
same distribution as other Common Stock on such terms as determined by the Committee; provided that, the Committee may decide
to award additional Restricted Stock or any other Award in lieu of any cash distribution. Notwithstanding anything to the contrary
herein, any assumption or substitution of Incentive Stock Options shall be structured in a manner intended to comply with the requirements
of Treasury Regulation §1.424-1 (and any amendments thereto).

 

(b)       
Awards may be canceled in exchange for an amount of cash equal to the Change in Control Price (as defined below) per share
of Common Stock covered by such Awards), less, in the case of an Appreciation Award, the exercise price per share of Common Stock
covered by such Award. The “Change in Control Price” means the price per share of Common Stock paid in
the Change in Control transaction.

 

(c)       
Appreciation Awards may be cancelled without payment, if the Change in Control Price is less than the exercise price per
share of such Appreciation Awards.

 

Notwithstanding anything
else herein, the Committee may provide for accelerated vesting or lapse of restrictions, of an Award at any time.

 

ARTICLE
XI

TERMINATION OR AMENDMENT OF PLAN

 

Notwithstanding any
other provision of the Plan, the Board, or the Committee (to the extent permitted by law), may at any time, and from time to time,
amend, in whole or in part, any or all of the provisions of the Plan (including any amendment deemed necessary or advisable to
ensure that the Company may comply with any regulatory requirement referred to in Article XIII or Section 409A), or suspend or
terminate it entirely, retroactively or otherwise; provided, however, that, unless otherwise required by law or specifically
provided herein, the rights of a Participant with respect to Awards granted prior to such amendment, suspension or termination,
may not be reduced in any material respect without the consent of such Participant and, provided further, without the approval
of the holders of the Company’s Common Stock entitled to vote in accordance with applicable law, no amendment may be made
that would (a) increase the aggregate number of shares of Common Stock that may be issued under the Plan (except by operation
of Section 4.2); (b) increase the maximum individual Participant limits under Section 4.1(b) (except by operation of Section 4.2);
(c) change the classification of individuals eligible to receive Awards under the Plan; (d) extend the maximum term of Options;
(e)  alter the Performance Criteria; (f) other than adjustments or substitutions in accordance with Section 4.2, amend the
terms of outstanding Awards to reduce the exercise price of outstanding Stock Options or Appreciation Awards, or cancel outstanding
Stock Options or Appreciation Awards (where, prior to the reduction or cancellation, the exercise price exceeds the Fair Market
Value on the date of cancellation) in exchange for cash, other Awards or Stock Options or Appreciation Awards with an exercise
price that is less than the exercise price of the original Stock Options or Appreciation Awards; or (g) otherwise require
stockholder approval in order for the Plan or any of the Awards issued hereunder to continue to comply with applicable law (including
Code Sections 162(m) and 422) or the rules of any applicable securities exchange or system on which the Company’s securities
are listed or traded at the request of the Company.

 

     
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The Committee may amend
the terms of any Award theretofore granted, prospectively or retroactively; provided that no such amendment reduces in any
material respect the rights of any Participant without the Participant’s consent. Actions taken by the Committee in accordance
with Article IV shall not be deemed to reduce the rights of any Participant.

 

Notwithstanding anything
herein to the contrary, the Board or the Committee may amend the Plan or any Award at any time without a Participant’s consent
to comply with Section 409A or any other applicable law. 

 

ARTICLE
XII

UNFUNDED PLAN

 

The Plan is intended
to constitute an “unfunded” plan for incentive and deferred compensation. With respect to any payments as to which
a Participant has a fixed and vested interest but which are not yet made to a Participant by the Company, nothing contained herein
shall give any such Participant any rights that are greater than those of a general unsecured creditor of the Company.

 

ARTICLE
XIII

GENERAL PROVISIONS

 

13.1       
Legend. The Committee may require each person receiving shares of Common Stock pursuant to an Award to represent
to and agree with the Company in writing that the Participant is acquiring the shares without a view to distribution thereof and
such other securities law related representations as the Committee shall request. In addition to any legend required by the Plan,
the certificates or book entry accounts for such shares may include any legend that the Committee deems appropriate to reflect
any restrictions on Transfer.

 

All certificates or
book entry accounts for shares of Common Stock delivered under the Plan shall be subject to such stop transfer orders and other
restrictions as the Committee may deem advisable under the rules, regulations and other requirements of the Securities and Exchange
Commission, any stock exchange upon which the Common Stock is then listed or any national automated quotation system on which the
Common Stock is then quoted, any applicable Federal or state securities law, and any applicable corporate law, and the Committee
may cause a legend or legends to be put on any such certificates to make appropriate reference to such restrictions. If necessary
or advisable in order to prevent a violation of applicable securities laws or to avoid the imposition of public company reporting
requirements, then, notwithstanding anything herein to the contrary, any stock-settled Awards shall be paid in cash in an amount
equal to the Fair Market Value on the date of settlement of such Awards.

 

     
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13.2       
Other Plans. Nothing contained in the Plan shall prevent the Board from adopting other or additional compensation
arrangements, subject to stockholder approval if such approval is required; and such arrangements may be either generally applicable
or applicable only in specific cases.

 

13.3       
No Right to Employment/Consultancy/Directorship. Neither the Plan nor the grant of any Award thereunder shall
give any Participant or other person any right to employment, consultancy or directorship by the Company or any Affiliate, or
limit in any way the right of the Company or any Affiliate by which an employee is employed or a Consultant or Non-Employee Director
is retained to terminate his employment, consultancy or directorship at any time.

 

13.4       
Withholding of Taxes. (a) The Company or any Affiliate shall have the right to deduct from any payment to be
made pursuant to the Plan, or to otherwise require, prior to the issuance or delivery of any shares of Common Stock or the payment
of any cash thereunder, payment by the Participant of, any Federal, foreign, state or local taxes required by law to be withheld.
Upon the vesting of Restricted Stock (or other Award that is taxable upon vesting), or upon making an election under Section 83(b)
of the Code, a Participant shall pay all required withholding to the Company or any Affiliate. Any statutorily required withholding
obligation with regard to any Participant may be satisfied, subject to the consent of the Committee, by reducing the number of
shares of Common Stock otherwise deliverable or by delivering shares of Common Stock already owned. Any fraction of a share of
Common Stock required to satisfy such tax obligations shall be disregarded and the amount due shall be paid instead in cash by
the Participant.

 

13.5       
No Assignment of Benefits. No Award or other benefit payable under the Plan shall, except as otherwise specifically
provided in the Plan or permitted by the Committee, be Transferable in any manner, and any attempt to Transfer any such benefit
shall be void, and any such benefit shall not in any manner be liable for or subject to the debts, contracts, liabilities, engagements
or torts of any person who shall be entitled to such benefit, nor shall it be subject to attachment or legal process for or against
such person.

 

13.6       
Listing and Other Conditions. (a) Unless otherwise determined by the Committee, as long as the Common Stock
is listed on a national securities exchange or system sponsored by a national securities association, the issuance of shares of
Common Stock pursuant to an Award shall be conditioned upon such shares being listed on such exchange or system. The Company shall
have no obligation to issue such shares unless and until such shares are so listed, and the right to exercise any Stock Option
or other Exercisable Award with respect to such shares shall be suspended until such listing has been effected.

 

(b)       
If at any time counsel to the Company shall be of the opinion that any offer or sale of Common Stock pursuant to an Award
is or may be unlawful or prohibited, or will or may result in the imposition of excise taxes on the Company, under the statutes,
rules or regulations of any applicable jurisdiction or under the rules of the national securities exchange on which the Common
Stock then is listed, the Company shall have no obligation to make such offer or sale, or to make any application or to effect
or to maintain any qualification or registration under the Securities Act or otherwise, with respect to the Common Stock or Awards,
and the right to exercise any Stock Option or other Exercisable Award shall be suspended until, in the opinion of said counsel,
such offer or sale shall be lawful, permitted or will not result in the imposition of excise taxes on the Company.

 

     
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(c)       
Upon termination of any period of suspension under this Section 13.6, any Award affected by such suspension which shall
not then have expired or terminated shall be reinstated as to all shares available before such suspension and as to shares which
would otherwise have become available during the period of such suspension, but no such suspension shall extend the term of any
Award.

 

(d)       
A Participant shall be required to supply the Company with certificates, representations and information that the Company
requests and otherwise cooperate with the Company in obtaining any listing, registration, qualification, exemption, consent or
approval the Company deems necessary or appropriate.

 

13.7       
Governing Law. The Plan and matters arising under or related to it shall be governed by and construed in accordance
with the internal laws of the State of Delaware without giving effect to its principles of conflicts of laws.

 

13.8       
Construction. Wherever any words are used in the Plan in the masculine gender they shall be construed as though
they were also used in the feminine gender in all cases where they would so apply. As used herein, (a) ”or” shall
mean “and/or” and (b) ”including” or “include” shall mean “including, without limitation.”
Any reference herein to an agreement in writing shall be deemed to include an electronic writing to the extent permitted by applicable
law.

 

13.9       
No Acquired Rights. In participating in the Plan, each Participant is deemed to acknowledge and accept that
the Committee has the sole discretion to amend or terminate the Plan, to the extent permitted hereunder, at any time and that
the opportunity given to a Participant to participate in the Plan is at the sole discretion of the Committee and does not obligate
the Company or any Affiliate to offer such participation in the future (whether on the same or different terms). In participating
in the Plan, each Participant is deemed further to acknowledge and accept that (i) such Participant’s participation in the
Plan is not to be considered part of any normal or expected compensation, (ii) the value of Awards granted to a Participant shall
not be used for purposes of determining any benefits or compensation payable to the Participant or the Participant’s beneficiaries
or estate under any benefit arrangement of the Company or its Affiliates and (iii) the termination of the Participant’s
employment with the Company or an Affiliate under any circumstance whatsoever will not give the Participant any claim or right
of action against the Company or any of its Affiliates in respect of any lost rights under the Plan that may arise as a result
of such termination of employment.

 

13.10    
Data Protection.

 

By participating in
the Plan, each Participant shall consent to the holding and processing of personal information provided by such Participant to
the Company, any Affiliate, trustee or third-party service provider, for all purposes relating to the operation of the Plan. These
include, but are not limited to: (i) administering and maintaining Participant records; (ii) providing information to the Company,
Affiliates, trustees of any employee benefit trust, registrars, brokers or third-party administrators of the Plan; (iii) providing
information to future purchasers or merger partners of the Company or any Affiliate, or the business in which the Participant works;
and (iv) transferring personal information about the Participant to any country or territory that may not provide the same protection
for the information as the Participant’s home country. Such personal information may include, without limitation, the Participant’s
name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality,
job title, any shares or directorships held in the Company or an Affiliate and details of all Awards or other entitlement to shares
awarded, canceled, exercised, vested, unvested or outstanding in a Participant’s favor.

 

     
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13.11    
Costs. The Company shall bear all expenses associated with administering the Plan, including expenses of issuing
Common Stock pursuant to any Awards.

 

13.12    
No Right to Same Benefits. The provisions of Awards need not be the same with respect to each Participant, and
each Award to an individual Participant need not be the same.

 

13.13    
Death/Disability. The Committee may require the transferee of a Participant to supply it with written notice
of the Participant’s death or Disability and to supply it with a copy of the will (in the case of the Participant’s
death) or such other evidence as the Committee deems necessary or advisable to establish the validity of the transfer of an Award.
The Committee also may require that the transferee agree to be bound by all of the terms and conditions of the Plan.

 

13.14    
Section 16(b) of the Exchange Act. All elections and transactions under the Plan by persons subject to Section
16 of the Exchange Act involving shares of Common Stock are intended to comply with any applicable exemptive condition under Rule 16b-3.
The Committee may establish and adopt written administrative guidelines, designed to facilitate compliance with Section 16(b)
of the Exchange Act, as it may deem necessary or advisable for the administration and operation of the Plan and the transaction
of business thereunder.

 

13.15    
Section 409A. Although the Company does not guarantee to a Participant the particular tax treatment of any Award,
all Awards are intended to comply with, or be exempt from, the requirements of Section 409A and the Plan and any Award agreement
shall be limited, construed and interpreted in accordance with such intent. To the extent that any Award constitutes “non-qualified
deferred compensation” pursuant to Section 409A (a “Section 409A Covered Award”), it is intended
to be paid in a manner that will comply with Section 409A. In no event shall the Company be liable for any additional tax, interest
or penalties that may be imposed on a Participant by Section 409A or for any damages for failing to comply with Section 409A.
Notwithstanding anything in the Plan or in an Award to the contrary, the following provisions shall apply to Section 409A Covered
Awards:

 

(a)       
A termination of employment shall not be deemed to have occurred for purposes of any provision of a Section 409A Covered
Award providing for payment upon or following a termination of the Participant’s employment unless such termination is also
a “separation from service” within the meaning of Section 409A and, for purposes of any such provision of a Section
409A Covered Award, references to a “termination,” “termination of employment” or like terms shall mean
separation from service. Notwithstanding any provision to the contrary in the Plan or the Award, if the Participant is deemed on
the date of the Participant’s Termination to be a “specified employee” within the meaning of that term under
Section 409A(a)(2)(B) of the Code and using the identification methodology selected by the Company from time to time, or if none,
the default methodology set forth in Section 409A, then with regard to any such payment under a Section 409A Covered Award, to
the extent required to be delayed in compliance with Section 409A(a)(2)(B) of the Code, such payment shall not be made prior to
the earlier of (i) the expiration of the six-month period measured from the date of the Participant’s separation from
service, and (ii) the date of the Participant’s death. All payments delayed pursuant to this Section 13.15(a) shall be paid
to the Participant on the first day of the seventh month following the date of the Participant’s separation from service
or, if earlier, on the date of the Participant’s death.

 

     
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(b)       
With respect to any payment pursuant to a Section 409A Covered Award that is triggered upon a Change in Control, the settlement
of such Award shall not occur until the earliest of (i) the Change in Control if such Change in Control constitutes a “change
in the ownership of the corporation,” a “change in effective control of the corporation” or a “change in
the ownership of a substantial portion of the assets of the corporation,” within the meaning of Section 409A(a)(2)(A)(v)
of the Code, (ii) the date such Award otherwise would be settled pursuant to the terms of the applicable Award agreement and (iii)
the Participant’s “separation from service” within the meaning of Section 409A, subject to Section 13.15(a).

 

(c)       
For purposes of Code Section 409A, a Participant’s right to receive any installment payments under the Plan or pursuant
to an Award shall be treated as a right to receive a series of separate and distinct payments.

 

(d)       
Whenever a payment under the Plan or pursuant to an Award specifies a payment period with reference to a number of days
(e.g., “payment shall be made within 30 days following the date of termination”), the actual date of payment within
the specified period shall be within the sole discretion of the Company.

 

13.16    
Successor and Assigns. The Plan shall be binding on all successors and permitted assigns of a Participant, including
the estate of such Participant and the executor, administrator or trustee of such estate.

 

13.17    
Severability of Provisions. If any provision of the Plan shall be held invalid or unenforceable, such invalidity
or unenforceability shall not affect any other provisions hereof, and the Plan shall be construed and enforced as if such provisions
had not been included.

 

13.18    
Participants Subject to Taxation Outside the U.S.; No Tax Equalization. With respect to a Participant who is
subject to taxation in a country other than the United States, the Committee may grant Awards to such Participant on such terms
and conditions as the Committee deems appropriate to comply with the laws of the applicable country, and the Committee may create
such procedures, addenda and subplans and make such modifications as may, in the Committee’s discretion, be necessary or
desirable to comply with such laws. Neither the Company nor any Affiliate shall have any responsibility to such Participant with
respect to any taxes owed or owing in or to any jurisdiction that such Participant incurs as a result of receiving an Award and
becoming a Participant in the Plan, nor shall the Company or any Affiliate provide any tax equalization payment to any Participant
in respect of taxes owed or owing in or to any jurisdiction by a Participant.

 

13.19    
Payments to Minors, Etc. Any benefit payable to or for the benefit of a minor, an incompetent person or other
person incapable of receipt thereof shall be deemed paid when paid to such person’s guardian or to the party providing or
reasonably appearing to provide for the care of such person, and such payment shall fully discharge the Committee, the Board,
the Company, its Affiliates and their employees, agents and representatives with respect thereto.

 

     
28

     

    

 

13.20    
Headings and Captions. The headings and captions herein are provided for reference and convenience only, shall
not be considered part of the Plan, and shall not be employed in the construction of the Plan.

 

13.21    
Recoupment. All Awards granted or other compensation paid by the Company under the Plan, including any shares
of Common Stock issued under any Award thereunder, will be subject to: (i) any compensation recapture policies established by
the Board or the Committee from time to time and in effect at the time of grant of the Award, and (ii) any compensation recapture
policies to the extent required pursuant to any applicable law (including, without limitation, the Dodd-Frank Act) or the rules
and regulations of any national securities exchange on which the shares of Common Stock are then traded.

 

13.22    
Reformation. If any provision regarding Detrimental Activity or any other provision set forth in the Plan or
an Award agreement is found by any court of competent jurisdiction or arbitrator to be invalid, void or unenforceable or to be
excessively broad as to duration, activity, geographic application or subject, such provision or provisions shall be construed,
by limiting or reducing them to the extent legally permitted, so as to be enforceable to the maximum extent compatible with then
applicable law.

 

13.23    
Electronic Communications. Notwithstanding anything else herein to the contrary, any Award agreement, notice
of exercise of an Exercisable Award, or other document or notice required or permitted by the Plan or an Award that is required
to be delivered in writing may, to the extent determined by the Committee, be delivered and accepted electronically. Signatures
also may be electronic if permitted by the Committee. The term “written agreement” as used in the Plan shall include
any document that is delivered and/or accepted electronically.

 

13.24    
Agreement. As a condition to the grant of an Award, if requested by the Company and the lead underwriter of
any public offering of the Common Stock (the “Lead Underwriter”), a Participant shall irrevocably agree
not to sell, contract to sell, grant any option to purchase, transfer the economic risk of ownership in, make any short sale of,
pledge or otherwise transfer or dispose of, any interest in any Common Stock or any securities convertible into, derivative of,
or exchangeable or exercisable for Common Stock, or any other rights to purchase or acquire Common Stock (except Common Stock
included in such public offering or acquired on the public market after such offering) during such period of time following the
effective date of a registration statement of the Company filed under the Securities Act that the Lead Underwriter shall specify
(the “Lock-up Period”). The Participant shall further agree to sign such documents as may be requested
by the Lead Underwriter to effect the foregoing and agree that the Company may impose stop-transfer instructions with respect
to Common Stock acquired pursuant to an Award until the end of such Lock-up Period.

 

13.25    
Defense of Trade Secrets Act.

 

Pursuant to 18 USC
§ 1833(b), an individual may not be held criminally or civilly liable under any federal or state trade secret law for disclosure
of a trade secret made: (i) in confidence to a government official, either directly or indirectly, or to an attorney, solely for
the purpose of reporting or investigating a suspected violation of law; and/or (ii) in a complaint or other document filed in a
lawsuit or other proceeding, if such filing is made under seal. Additionally, an individual suing an employer for retaliation based
on the reporting of a suspected violation of law may disclose a trade secret to his or her attorney and use the trade secret information
in the court proceeding, so long as any document containing the trade secret is filed under seal and the individual does not disclose
the trade secret except pursuant to court order.

 

     
29

     

    

 

ARTICLE
XIV

EFFECTIVE DATE OF PLAN

 

The Plan was adopted
by the Board on March 29, 2017. The Plan was approved by the stockholders of the Company on May 4, 2017, effective on such date
(the “Effective Date”).

 

ARTICLE
XV

TERM OF PLAN

 

No Award shall be granted
on or after the tenth anniversary of the earlier of (a) the date the Plan is adopted by the Board or (b) the date of stockholder
approval of the Plan, provided that Awards granted prior to such tenth anniversary may extend beyond that date in accordance
with the terms of the Plan. The Company may seek stockholder reapproval of the Performance Criteria and to the extent that such
stockholder approval is obtained no later than the first stockholder meeting that occurs in the fifth year following the year in
which such stockholders previously approved the Performance Criteria, Awards (other than Stock Options or stock appreciation rights)
may be based on such Performance Criteria in order to qualify for the “performance-based compensation” exception under
Section 162(m) of the Code.

 

     
30

     

    

EXHIBIT
A

Performance CRITERIA

 

Performance goals established
for purposes of the grant or vesting of performance-based Awards of Restricted Stock, Other Stock-Based Awards or Performance-Based
Cash Awards that are intended to be “performance-based” under Section 162(m) shall be based on one or more of the following
performance criteria (“Performance Criteria”):

 

		(1)	enterprise value or value creation targets;

 

		(2)	income or net income; operating income; net operating income or net operating income after tax;
operating profit or net operating profit;

 

		(3)	cash flow including, but not limited to, from operations or free cash flow;

 

		(4)	specified objectives with regard to limiting the level of increase in all or a portion of bank
debt or other long-term or short-term public or private debt or other similar financial obligations, or other capital structure
improvements, which may be calculated net of cash balances or other offsets and adjustments as may be established by the Committee;

 

		(5)	net sales, revenues, net income or earnings before income tax or other exclusions;

 

		(6)	operating margin; return on operating revenue or return on operating profit;

 

		(7)	return measures (after tax or pre-tax), including return on capital employed, return on invested
capital; return on equity, return on assets, return on net assets;

 

		(8)	market capitalization, earnings per share, fair market value of the shares of the Company’s
Shares, franchise value (net of debt), economic value added;

 

		(9)	total stockholder return or growth in total stockholder return (with or without dividend reinvestment);

 

		(10)	financing and other capital raising transactions;

 

		(11)	proprietary investment results;

 

		(12)	estimated market share;

 

		(13)	expansion of sales in additional geographies or markets;

 

		(14)	expense management/control or reduction (including without limitation, compensation and benefits
expense);

 

		(15)	customer satisfaction;

 

		(16)	technological improvements/implementation, new product innovation;

 

     
i

     

    

 

		(17)	collections and recoveries;

 

		(18)	property/asset purchases;

 

		(19)	litigation and regulatory resolution/implementation goals;

 

		(20)	leases, contracts or financings (including renewals, overhead, savings, G&A and other expense
control goals);

 

		(21)	risk management/implementation;

 

		(22)	development and implementation of strategic plans or organizational restructuring goals;

 

		(23)	development and implementation of risk and crisis management programs; compliance requirements
and compliance relief; productivity goals; workforce management and succession planning goals;

 

		(24)	employee satisfaction or staff development;

 

		(25)	formations of joint ventures or partnerships or the completion of other similar transactions intended
to enhance revenue or profitability or to enhance its customer base;

 

		(26)	licensing or partnership arrangements;

 

		(27)	progress of partnered programs and partner satisfaction;

 

		(28)	progress of internal research or development programs; 

 

		(29)	submission of a new drug application (“NDA”)
or the approval of the NDA by the U.S. Food and Drug Administration (“FDA”);

 

		(30)	submission of an investigational new drug application (“IND”)
or the approval of the IND by the FDA;

 

		(31)	submission of a therapeutic biologics license application
(“BLA”) or the approval of the BLA by the FDA;

 

		(32)	submission to, or approval by, a foreign regulatory body
of an applicable filing or a product;

 

		(33)	strategic partnerships or transactions (including in-licensing
and out-licensing of intellectual property;

 

		(34)	the achievement of a launch of a new drug;

 

		(35)	the initiation or completion of a clinical trial phase;

 

     
ii

     

    

 

		(36)	implementation or completion of critical projects;

 

		(37)	achievement of specified milestones in the discovery and
development of one or more of the Company’s products;

 

		(38)	achievement of specified milestones in the commercialization
of one or more of the Company’s products;

 

		(39)	achievement of specified milestones in the manufacturing
of one or more of the Company’s products; 

 

		(40)	the achievement of specified regulatory milestones relating
to one or more of the Company’s products; or

 

		(41)	completion of a merger, acquisition or any transaction that results in the sale of all or substantially
all of the stock or assets.

 

All Performance Criteria
may be based upon the attainment of specified levels of (or a specified increase or decrease in) the Company (or Affiliate, division,
other operational unit, business segment or administrative department of the Company or any Affiliate) performance under one or
more of the measures described above and may be measured relative to the performance of other corporations (or an affiliate, subsidiary,
division, other operational unit, business segment or administrative department of another corporation or its affiliates). Any
goal may be expressed as a dollar figure, on a percentage basis (if applicable) or on a per share basis, and goals may be either
absolute, relative to a selected peer group or index, or a combination of both. To the extent permitted under Section 162(m),
(including compliance with any requirements for stockholder approval), the Committee may: (i) designate additional business
criteria on which the Performance Criteria may be based or (ii) adjust, modify or amend the aforementioned business criteria.

 

Except as otherwise
determined by the Committee in the applicable Award agreement, the measures used in Performance Criteria set under the Plan shall
be determined in accordance with generally accepted accounting principles (“GAAP”) and in a manner consistent
with the methods used in the Company’s regular reports on Forms 10-K and 10-Q, without regard to any of the following unless
otherwise determined by the Committee consistent with the requirements of Code Section 162(m)(4)(C) of the Code and the regulations
thereunder:

 

(a)       all
items of gain, loss or expense for the fiscal year or other applicable performance period that are related to special, unusual
or non-recurring items, events or circumstances affecting the Company (or Affiliate, division, other operational unit, business
segment or administrative department of the Company or any Affiliate) or the financial statements of the Company (or Affiliate,
division, other operational unit, business segment or administrative department of the Company or any Affiliate);

 

(b)       all
items of gain, loss or expense for the fiscal year or other applicable performance period that are related to (i) the disposal
of a business or discontinued operations or (ii) the operations of any business acquired by the Company (or Affiliate, division,
other operational unit, business segment or administrative department of the Company or any Affiliate) during the fiscal year or
other applicable performance period; and

 

     
iii

     

    

 

(c)       all
items of gain, loss or expense for the fiscal year or other applicable performance period that are related to changes in accounting
principles or to changes in applicable law or regulations.

 

To the extent any Performance
Criteria are expressed using any measures that require deviations from GAAP, such deviations shall be at the discretion of the
Committee as exercised at the time the Performance Criteria are set, to the extent permitted under Section 162(m).

 

     
iv

     

    

ALTIMMUNE, INC. 

 

2017 OMNIBUS INCENTIVE
PLAN

 

UK ADDENDUM

 

		1.	Purpose

 

		1.1	The purpose of this UK Addendum to the Plan is to enable the Committee to grant Awards (being Stock
Options, Restricted Stock, Other Stock-Based Awards or Performance-Based Cash Awards) to certain employees and full-time directors
of the Company who are based in the United Kingdom only.

 

		1.2	Awards granted pursuant to the UK Addendum will be non-tax advantaged for UK tax purposes and,
to the extent relevant, Awards are granted pursuant to an “employee share scheme” for the purposes of the Financial
Services and Markets Act 2000.

 

		2.	Definitions

 

Any terms not defined in this
UK Addendum will have the meaning set out in Article II of the Plan.

 

		3.	Terms

 

Awards granted pursuant to the
UK Addendum shall be governed by the terms of the Plan, subject to any such amendments set out below and by the terms of the individual
Award agreement entered into between the Company and the Participant.

 

		4.	Withholding Obligations

 

		4.1	The Participant shall be accountable for any income tax and, subject to the following provisions,
national insurance liability which is chargeable on any assessable income deriving from the grant, vesting, exercise, transfer
or cancellation (whether for consideration or otherwise) of an Award, or in respect of any additional share or cash consideration
acquired as a result of distribution of a dividend, or otherwise in respect of the exercise of an Award.  In respect of such
assessable income, the Participant shall indemnify the Company and (at the direction of the Company) any Affiliate which is or
may be treated as the employer of the Participant in respect of the following (together, the “Tax Liabilities”):

 

		(a)	any income tax liability which falls to be paid to HMRC by the Company (or the relevant employing
Affiliate) under the PAYE system as it applies to income tax under the Income Tax (Earnings and Pensions) Act 2003 (“ITEPA”)
and the Pay As You Earn (“PAYE”) regulations referred to therein; and

 

		(b)	any national insurance liability which falls to be paid to HMRC by the Company (or the relevant
employing Affiliate) under the PAYE system as it applies for national insurance purposes under the Social Security Contributions
and Benefits Act 1992 and regulations referred to therein, including:

 

		(i)	all the employee’s primary Class 1 national insurance contributions; and

 

     
1

     

    

 

		(ii)	to the extent permitted by law, all of the employer’s secondary Class 1 national insurance
contributions.

 

		4.2	Pursuant to the indemnity referred to in clause 4.1 above, the Participant shall make such arrangements
as the Company requires to meet the cost of the Tax Liabilities, including, at the direction of the Company, any of the following:

 

		(a)	making a cash payment of an appropriate amount to the relevant employing company whether by cheque,
banker’s draft or deduction from salary in time to enable the Company to remit such amount to HMRC before the 14th day following
the end of the month in which the event giving rise to the Tax Liabilities occurred;

 

		(b)	appointing the Company as agent and/or attorney for the sale of sufficient Shares acquired pursuant
to the exercise of any Stock Options or pursuant to the grant, exercise or vesting of an Award to cover the Tax Liabilities and
authorising the payment to the relevant company of the appropriate amount (including all reasonable fees, commissions and expenses
incurred by the relevant employing company in relation to such sale) out of the net proceeds of sale of such Shares; or

 

		(c)	to the extent permitted by law, entering into:

 

		(i)	an agreement that allows the Participant’s employer to recover the whole or any portion of
any employer’s secondary Class 1 National Insurance Contributions in respect of the vesting or exercise of the Award from
the Participant; or

 

		(ii)	an election whereby the employer’s liability for secondary Class 1 national insurance contributions
is transferred to the Participant on terms set out in the election, as approved by HMRC.

 

		4.3	The failure by a Participant to make arrangements in line with clause 4.2 above at the request
of the Company shall result in the vesting of such Award (other than an Exercisable Award) or the exercise of such Exercisable
Award (as applicable) being ineffective, null and void.

 

		5.	Section 431 Elections

 

Where Shares to be acquired on
the exercise or vesting of an Award are considered (at the sole discretion of the Company) to be “restricted securities”
for the purposes of Part 7 of ITEPA, it is a condition of exercise that the Participant (if so directed by the Company) enter into
a joint election with the Company (or, if different, the relevant employing Affiliate) pursuant to section 431 ITEPA electing that
the market value of the shares to be acquired on the exercise or vesting of the Award be calculated as if the Shares were not “restricted
securities”.

 

     
2Exhibit 10.2

 

INCENTIVE STOCK OPTION AGREEMENT

PURSUANT TO THE

ALTIMMUNE, INC. 2017 OMNIBUS INCENTIVE
PLAN

 

* * * * *

 

Participant: ________________________

 

Grant Date: _________________________

 

Per Share Exercise Price: $_____

 

Number of Shares of Common Stock subject to this Option: _____________________

 

Vesting schedule: This Option may be exercised with respect
to the first 25% of the shares subject to this Option on the first anniversary date of the Grant Date and an additional 25% of
the shares subject to this Option upon each subsequent anniversary date thereafter.

 

* * * * *

 

THIS INCENTIVE STOCK
OPTION AWARD AGREEMENT (this “Agreement”), dated as of the Grant Date specified above, is entered into by and
between Altimmune, Inc., a Delaware corporation (the “Company”), and the Participant specified above, pursuant
to the Altimmune, Inc. 2017 Omnibus Incentive Plan, as in effect and as amended from time to time (the “Plan”),
which is administered by the Committee; and

 

WHEREAS, it has been
determined under the Plan that it would be in the best interests of the Company to grant the incentive stock option provided for
herein to the Participant.

 

NOW, THEREFORE, in
consideration of the mutual covenants and promises hereinafter set forth and for other good and valuable consideration, the parties
hereto hereby mutually covenant and agree as follows:

 

1.       Incorporation
By Reference; Plan Document Receipt. This Agreement is subject in all respects to the terms and provisions of the Plan
(including, without limitation, any amendments thereto adopted at any time and from time to time unless such amendments are expressly
intended not to apply to the award provided hereunder), all of which terms and provisions are made a part of and incorporated in
this Agreement as if they were each expressly set forth herein. Any capitalized term not defined in this Agreement shall have the
same meaning as is ascribed thereto in the Plan. The Participant hereby acknowledges receipt of a true copy of the Plan and that
the Participant has read the Plan carefully and fully understands its content. In the event of any conflict between the terms of
this Agreement and the terms of the Plan, the terms of the Plan shall control.

 

2.       Grant
of Option. The Company hereby grants to the Participant, as of the Grant Date specified above, an incentive stock option
(this “Option”) to acquire from the Company at the Per Share Exercise Price specified above, the aggregate number
of shares of Common Stock specified above (the “Option Shares”). Except as otherwise provided by the Plan, the
Participant agrees and understands that nothing contained in this Agreement provides, or is intended to provide, the Participant
with any protection against potential future dilution of the Participant’s interest in the Company for any reason. The Participant
shall have no rights as a stockholder with respect to any shares of Common Stock covered by this Option unless and until the Participant
has become the holder of record of the shares of Common Stock, and no adjustments shall be made for dividends in cash or other
property, distributions or other rights in respect of any such shares, except as otherwise specifically provided for in the Plan
or this Agreement.

 

     

     

    

 

3.       Tax
Matters. The Option granted hereby is intended to qualify as an “incentive stock option” under Section 422
of the Code. Notwithstanding the foregoing, the Option will not qualify as an “incentive stock option,” among other
events, (a) if the Participant disposes of the Option Shares at any time during the two-year period following the date of
this Agreement or the one-year period following the date of any exercise of the Option; (b) except in the event of the Participant’s
death or Disability, if the Participant is not employed by the Company, a Parent or a Subsidiary at all times during the period
beginning on the date of this Agreement and ending on the day that is three months before the date of any exercise of the Option;
or (c) to the extent the aggregate fair market value of the Common Stock subject to “incentive stock options”
held by the Participant which become exercisable for the first time in any calendar year (under all plans of the Company, a Parent
or a Subsidiary) exceeds $100,000. For purposes of clause (c) above, the “fair market value” of the Common Stock
shall be determined as of the Grant Date. To the extent that the Option does not qualify as an “incentive stock option,”
it shall not affect the validity of the Option and shall constitute a separate non-qualified stock option. In the event that the
Participant disposes of the Option Shares within either two (2) years following the Grant Date or one year following the date
of exercise of the Option, the Participant must deliver to the Company, within seven (7) days following such disposition,
a written notice specifying the date on which such shares were disposed of, the number of shares of Common Stock so disposed, and,
if such disposition was by a sale or exchange, the amount of consideration received.

 

4.       Vesting;
Detrimental Activity; Expiration.

 

(a) Vesting.
The Option subject to this grant shall become vested in accordance with the vesting schedule specified above. All vesting of the
Option granted hereunder shall occur only on the appropriate vesting date specified above, subject to the Participant’s continued
service with the Company or any of its Subsidiaries through each applicable vesting date. There shall be no proportionate or partial
vesting in the periods prior to each vesting date.

 

(b) Effect
of Detrimental Activity. The provisions of Section 6.3(c)(ii) of the Plan regarding Detrimental Activity shall apply to
the Option. The Participant acknowledges and agrees that the restrictions herein and in the Plan regarding Detrimental Activity
are necessary for the protection of the business and goodwill of the Company and its Affiliates, and are considered by the Participant
to be reasonable for such purposes. Without intending to limit the legal or equitable remedies available in the Plan and in this
Agreement, the Participant acknowledges that engaging in Detrimental Activity will cause the Company and its Affiliates material
irreparable injury for which there is no adequate remedy at law, that it will not be possible to measure damages for such injuries
precisely and that, in the event of such activity or threat thereof, the Company shall be entitled, in addition to the remedies
provided under the Plan, to obtain from any court of competent jurisdiction a temporary restraining order or a preliminary or permanent
injunction restraining the Participant from engaging in Detrimental Activity or such other relief as may be required to specifically
enforce any of the covenants in the Plan and this Agreement without the necessity of posting a bond, and in the case of a temporary
restraining order or a preliminary injunction, without having to prove special damages.

 

(c) Expiration.
The term of the Option shall be until the tenth anniversary of the Grant Date, after which time it shall expire (such tenth anniversary
date, the “Expiration Date”), subject to earlier termination in the event of the Participant’s Termination
as specified in the Plan and this Agreement. Upon the Expiration Date, the Option (whether vested or not) shall automatically be
cancelled for no consideration, shall no longer be exercisable, and shall cease to be outstanding.

 

    	 	2	 

     

    

 

5.       Termination.
Subject to the terms of the Plan and this Agreement, the Option, to the extent vested at the time of the Participant’s Termination,
shall remain exercisable as follows:

 

(a) Termination
due to Death or Disability. In the event of the Participant’s Termination by reason of death or Disability, the vested
portion of this Option shall remain exercisable until the earlier of (i) one year from the date of such Termination, and (ii) the
Expiration Date.

 

(b) Termination
Without Cause. In the event of the Participant’s involuntary Termination by the Company without Cause, the vested portion
of this Option shall remain exercisable until the earlier of (i) ninety (90) days from the date of such Termination,
and (ii) the Expiration Date.

 

(c) Voluntary
Termination. In the event of the Participant’s voluntary Termination, the vested portion of this Option shall remain
exercisable until the earlier of (i) thirty (30) days from the date of such Termination, and (ii) the Expiration
Date.

 

(d) Termination
for Cause. In the event of the Participant’s Termination by the Company for Cause (or in the event of a voluntary
Termination by the Participant after the occurrence of an event that would be grounds for a Termination for Cause), the Option
granted hereunder (whether or not vested) shall terminate and expire upon such Termination.

 

(e) Treatment
of Unvested Option upon Termination. Any portion of this Option that is not vested as of the date of the Participant’s
Termination for any reason shall terminate and expire as of the date of such Termination.

 

6.       Method
of Exercise and Payment. Subject to Section 9 hereof, to the extent that the Option has become vested and exercisable
with respect to a number of shares of Common Stock as provided herein, the Option may thereafter be exercised by the Participant,
in whole or in part, at any time or from time to time prior to the expiration of the Option as provided herein and in accordance
with Section 6.3 of the Plan, including, without limitation, by the delivery of any form of exercise notice as may be required
by the Committee and payment in full of the Per Share Exercise Price multiplied by the number of shares of Common Stock underlying
the portion of the Option exercised.

 

7.       Non-transferability. The
Option, and any rights and interests with respect thereto, issued under this Agreement and the Plan shall not, prior to vesting,
be sold, exchanged, Transferred, assigned or otherwise disposed of in any way by the Participant (or any beneficiary(ies) of the
Participant), other than by testamentary disposition by the Participant or the laws of descent and distribution. Any attempt to
sell, exchange, Transfer, assign, pledge, encumber or otherwise dispose of or hypothecate in any way the Option, or the levy of
any execution, attachment or similar legal process upon the Option, contrary to the terms and provisions of this Agreement and/or
the Plan shall be null and void and without legal force or effect.

 

8.       Governing
Law. All questions concerning the construction, validity and interpretation of this Agreement shall be governed by, and
construed in accordance with, the laws of the State of Delaware, without regard to choice of law principles (whether of the State
of Delaware or otherwise) that would result in the application of the law of any other jurisdiction.

 

9.       Withholding
of Tax. The Company or any Affiliate shall have the power and the right to deduct or withhold, require the Participant
to remit to the Company or such Affiliate, or make any other arrangements as it considers appropriate to ensure that it has received,
an amount sufficient to satisfy any federal, state, local and foreign taxes of any kind (including, but not limited to, the Participant’s
FICA and SDI obligations) which the Company, in its sole discretion, deems necessary to be withheld or remitted to comply with
the Code and/or any other applicable law, rule or regulation with respect to the Option and, if the Participant fails to do so,
the Company may otherwise refuse to issue or Transfer any shares of Common Stock otherwise required to be issued pursuant to this
Agreement.

 

    	 	3	 

     

    

 

10.       Recoupment
Policy. The Participant acknowledges and agrees that this Option (including any shares of Common Stock issued upon exercise
thereof) shall be subject to the terms and provisions of any “clawback” or recoupment policy that may be adopted by
the Company or its Affiliates from time to time or as may be required by any applicable law (including, without limitation, the
Dodd-Frank Wall Street Reform and Consumer Protection Act and implementing rules and regulations thereunder).

 

11.       Notices.
Any notice or communication given hereunder shall be in writing and shall be deemed to have been duly given: (i) when delivered
in person; (ii) two (2) days after being sent by United States mail; or (iii) on the first business day following the date of deposit
if delivered by a nationally recognized overnight delivery service, in each case, to the appropriate party at the address set forth
below (or such other address as the party may from time to time specify):

 

If to the Company, to:

 

Altimmune, Inc.

19 Firstfield Road, Suite 200

Gaithersburg, MD 20878

Attention: Chief Executive Officer

 

with a copy (which shall not constitute notice) to:

 

Proskauer Rose LLP

One International Place

Boston, MA 02110

Attention: Ori Solomon, Esq.

 

If to the Participant, to the
address on file with the Company.

 

12.       No
Right to Employment. Nothing contained in this Agreement shall affect the right of
the Company or any of its Affiliates to terminate the Participant’s employment at any time, with or without Cause, or shall
be deemed to create any rights to employment or continued employment. The rights and obligations arising under this Agreement are
not intended to and do not affect the Participant’s employment relationship that otherwise exists between the Participant
and the Company or any of its Affiliates, whether such employment relationship is at will or defined by an employment contract.
Moreover, this Agreement is not intended to and does not amend any existing employment contract between the Participant and the
Company or any of its Affiliates; to the extent there is a conflict between this Agreement and such an employment contract, the
employment contract shall govern and take priority.

 

13.       Data
Protection. By executing this Agreement, the Participant hereby consents to the holding and processing of personal
information provided by the Participant to the Company, any Affiliate thereof, trustee or third party service provider, for all
purposes relating to the operation of the Plan. These include, but are not limited to: (i) administering and maintaining Participant
records; (ii) providing information to the Company, its Affiliates, trustees of any employee benefit trust, registrars, brokers
or third party administrators of the Plan; (iii) providing information to future purchasers or merger partners of the Company or
any Affiliate thereof, or the business in which the Participant works; and (iv) transferring information about the Participant
to any country or territory that may not provide the same protection for the information as the Participant’s home country.

 

    	 	4	 

     

    

 

14.       Market
Stand-Off. If requested by the Company, any Affiliate or the lead underwriter of any public offering of the shares of Common
Stock (the “Lead Underwriter”), the Participant shall irrevocably agree not to sell, contract to sell, grant
any option to purchase, transfer the economic risk of ownership in, make any short sale of, pledge or otherwise Transfer or dispose
of, any interest in any shares of Common Stock or any securities convertible into, derivative of, or exchangeable or exercisable
for shares of Common Stock, or any other rights to purchase or acquire shares of Common Stock (except shares of Common Stock included
in such public offering or acquired on the public market after such offering) during such period of time following the effective
date of a registration statement of the Company filed under the Securities Act that the Lead Underwriter shall specify (the “Lock-up
Period”). The Participant shall further agree to sign such documents as may be requested by the Lead Underwriter, the
Company or any Affiliate to effect the foregoing and agree that the Company or an Affiliate may impose stop transfer instructions
with respect to shares of Common Stock acquired pursuant to an Award until the end of such Lock-up Period.

 

15.       Compliance
with Laws. The issuance of this Option (and the shares of Common Stock upon exercise of this Option) pursuant to this Agreement
shall be subject to, and shall comply with, any applicable requirements of any foreign and U.S. federal and state securities laws,
rules and regulations (including, without limitation, the provisions of the Securities Act, the Exchange Act and in each case any
respective rules and regulations promulgated thereunder) and any other law or regulation applicable thereto. The Company shall
not be obligated to issue this Option or any of the shares of Common Stock pursuant to this Agreement if any such issuance would
violate any such requirements.

 

16.       Section 409A.
Notwithstanding anything herein or in the Plan to the contrary, the Option is intended to be exempt from the applicable requirements
of Section 409A of the Code and shall be limited, construed and interpreted in accordance with such intent.

 

17.       Binding
Agreement; Assignment. This Agreement shall inure to the benefit of, be binding upon, and be enforceable by the Company
and its successors and assigns. The Participant shall not assign any part of this Agreement without the prior express written consent
of the Company.

 

18.       Headings.
The titles and headings of the various sections of this Agreement have been inserted for convenience of reference only and shall
not be deemed to be a part of this Agreement.

 

19.       Counterparts. This
Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original, but all of which shall
constitute one and the same instrument.

 

20.       Severability.
The invalidity or unenforceability of any provisions of this Agreement in any jurisdiction shall not affect the validity, legality
or enforceability of the remainder of this Agreement in such jurisdiction or the validity, legality or enforceability of any provision
of this Agreement in any other jurisdiction, it being intended that all rights and obligations of the parties hereunder shall be
enforceable to the fullest extent permitted by law.

 

21.       Entire
Agreement; Amendment. This Agreement, together with the Plan, contains the entire agreement between the parties hereto
with respect to the subject matter contained herein, and supersedes all prior agreements or prior understandings, whether written
or oral, between the parties relating to such subject matter. The Committee shall have the right, in its sole discretion, to modify
or amend this Agreement from time to time in accordance with and as provided in the Plan. This Agreement may also be modified or
amended by a writing signed by both the Company and the Participant. The Company shall give written notice to the Participant of
any such modification or amendment of this Agreement as soon as practicable after the adoption thereof.

 

    	 	5	 

     

    

 

22.       Mode
of Communications. The Participant agrees, to the fullest extent permitted by applicable law, in lieu of receiving documents
in paper format, to accept electronic delivery of any documents that the Company or any of its Affiliates may deliver in connection
with this Option grant and any other grants offered by the Company or its Affiliates, including, without limitation, prospectuses,
grant notifications, account statements, annual or quarterly reports, and other communications. Electronic delivery of a document
may be made via the Company’s email system or by reference to a location on the Company’s intranet or website or the
online brokerage account system.

 

23.       Acquired
Rights. The Participant acknowledges and agrees that: (a) the Company may terminate or amend the Plan at any time;
(b) the award of the Option made under this Agreement is completely independent of any other award or grant and is made at
the sole discretion of the Company; (c) no past grants or awards (including, without limitation, the Option awarded hereunder)
give the Participant any right to any grants or awards in the future whatsoever; and (d) any benefits granted under this Agreement
are not part of the Participant’s ordinary salary, and shall not be considered as part of such salary in the event of severance,
redundancy or resignation.

 

 

 

[Remainder of Page Intentionally Left
Blank]

 

 

 

    	 	6	 

     

    

 

IN WITNESS WHEREOF, the parties
hereto have executed this Agreement as of the date first written above.

 

	 	ALTIMMUNE, INC.
	 	 	 
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 
	 	 
	 	PARTICIPANT
	 	 
	 	 
	 	Name:	 	 	 
	 	Social Security Number:	 

 

    	 	7

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