Document:

EXHIBIT 10.1

 

EXECUTION COPY

 

CONFIDENTIAL TREATMENT REQUESTED

BY ASSEMBLY BIOSCIENCES, INC.

 

ASSEMBLY BIOSCIENCES, INC.

 

and

 

Allergan
Pharmaceuticals INTERNATIONAL LIMITED

 

 

 

RESEARCH, DEVELOPMENT, COLLABORATION AND
LICENSE AGREEMENT

 

 

 

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

TABLE OF CONTENTS

 

	ARTICLE 1 DEFINITIONS	1
	 	 
	ARTICLE 2 LICENSE	21
	 	 	 
	2.1.	Licenses Granted by Assembly.	21
	 	 	 
	2.2.	Licenses Granted by Allergan	22
	 	 	 
	2.3.	Additional In-Licensed Intellectual Property	23
	 	 	 
	2.4.	Exclusivity	24
	 	 	 
	2.5.	Retention of Rights	25
	 	 	 
	2.6.	Disclosure of Know-How and Regulatory Documentation	26
	 	 	 
	2.7.	Option to Expand the Permitted Indications	26
	 	 	 
	ARTICLE 3 GOVERNANCE	28
	 	 	 
	3.1.	Establishment of Joint Development Committee	28
	 	 	 
	3.2.	Responsibilities of JDC	28
	 	 	 
	3.3.	Co-Chairs	29
	 	 	 
	3.4.	Meetings	29
	 	 	 
	3.5.	Minutes	30
	 	 	 
	3.6.	Decision Making within JDC	30
	 	 	 
	3.7.	Committee Deadlocks	30
	 	 	 
	3.8.	Joint Patent Committee	30
	 	 	 
	3.9.	Alliance Managers	31
	 	 	 
	ARTICLE 4 R&D PLAN, DEVELOPMENT AND DILIGENCE REQUIREMENTS	31
	 	 	 
	4.1.	R&D Plan	31
	 	 	 
	4.2.	Compound R&D Term	33
	 	 	 
	4.3.	Development Efforts During the R&D Term	33
	 	 	 
	4.4.	Development of New Compounds	34
	 	 	 
	4.5.	Development of Backup Compounds; [* * *]	34
	 	 	 
	4.6.	Development Efforts Following the End of the Compound R&D Term	35
	 	 	 
	4.7.	Diligence Obligations	36
	 	 	 
	4.8.	Development Costs	36
	 	 	 
	4.9.	Invoicing; Payment of Development Costs	37
	 	 	 
	4.10.	Subcontracts	38
	 	 	 
	4.11.	Materials	38
	 	 	 
	4.12.	Reports	39
	 	 	 
	ARTICLE 5 Co-Promotion	39
	 	 	 
	5.1.	Co-Promotion in the USA	39
	 	 	 
	5.2.	Co-Promotion in China	40

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	i

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

	5.3.	Joint Co-Promotion Committee	40
	 	 	 
	5.4.	Co-Promotion Agreement; Detailing Efforts	41
	 	 	 
	5.5.	Co-Promotion Expenses	41
	 	 	 
	ARTICLE 6 Regulatory Affairs; MANUFACTURING	42
	 	 	 
	6.1.	During Compound R&D Term	42
	 	 	 
	6.2.	Following Compound R&D Term	43
	 	 	 
	6.3.	Inspection or Audit	43
	 	 	 
	6.4.	Manufacturing of Licensed Compounds and Licensed
Products	44
	 	 	 
	ARTICLE 7 FINANCIAL PROVISIONS	47
	 	 	 
	7.1.	Upfront Cash Payment	47
	 	 	 
	7.2.	Milestone Payments	47
	 	 	 
	7.3.	Royalty Payments	49
	 	 	 
	7.4.	Reductions	50
	 	 	 
	7.5.	Taxes	51
	 	 	 
	7.6.	Value Added Tax	52
	 	 	 
	7.7.	Allergan Statements and Payment	52
	 	 	 
	7.8.	Currency Exchange	52
	 	 	 
	7.9.	Payment Method	52
	 	 	 
	7.10.	Records Retention; Financial Audit; Consolidation
Reporting	52
	 	 	 
	7.11.	Interest on Late Payments	53
	 	 	 
	7.12.	Right to Offset	53
	 	 	 
	ARTICLE 8 CONFIDENTIALITY	54
	 	 	 
	8.1.	Protection of Confidential Information	54
	 	 	 
	8.2.	Certain Permitted Disclosures	54
	 	 	 
	8.3.	Return of Confidential Information	54
	 	 	 
	8.4.	Unauthorized Use	55
	 	 	 
	8.5.	Public Disclosure	55
	 	 	 
	8.6.	Publications	56
	 	 	 
	ARTICLE 9 INTELLECTUAL PROPERTY	56
	 	 	 
	9.1.	Maintenance, Prosecution and Enforcement of
Patents	56
	 	 	 
	9.2.	Invalidity or Unenforceability Actions	61
	 	 	 
	9.3.	Infringement Claims by Third Parties	62
	 	 	 
	9.4.	Damages	63
	 	 	 
	9.5.	Conflicts with Existing In-License Agreements	63
	 	 	 
	9.6.	Ownership of IP	64
	 	 	 
	9.7.	Ownership of Joint Intellectual Property Rights	64

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	ii

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

	9.8.	United States Law	64
	 	 	 
	9.9.	Assignment Obligation	65
	 	 	 
	9.10.	Patent Term Extension and Supplementary Protection Certificate	65
	 	 	 
	9.11.	Trademarks for Licensed Product	65
	 	 	 
	ARTICLE 10 TERM AND TERMINATION	66
	 	 	 
	10.1.	Term	66
	 	 	 
	10.2.	Termination at Will by Allergan	67
	 	 	 
	10.3.	Material Breach	67
	 	 	 
	10.4.	Material Breach Dispute Resolution	67
	 	 	 
	10.5.	Termination for Patent Challenge	68
	 	 	 
	10.6.	Termination for Insolvency	68
	 	 	 
	10.7.	Termination for Failure or Delay to obtain HSR Clearance	69
	 	 	 
	10.8.	Effect of Expiration or Termination of this
Agreement	69
	 	 	 
	10.9.	Allergan Option to Continue In-Lieu of Termination	71
	 	 	 
	10.10.	Termination by Either Party for Failure or Delay to obtain HSR Clearance	72
	 	 	 
	10.11.	Termination for Failure of Representations	72
	 	 	 
	10.12.	Survival	72
	 	 	 
	10.13.	Effect of Termination on Sublicenses	73
	 	 	 
	ARTICLE 11 REPRESENTATIONS AND WARRANTIES	73
	 	 	 
	11.1.	Mutual Representations and Warranties and Covenants	73
	 	 	 
	11.2.	Assembly’s Additional Representations and Warranties and Covenants	74
	 	 	 
	11.3.	Allergan Additional Representations and Warranties	78
	 	 	 
	11.4.	Compliance with Laws	79
	 	 	 
	11.5.	Privacy; Transparency; Anti-Corruption	79
	 	 	 
	11.6.	Updates to Representations and Warranties	80
	 	 	 
	ARTICLE 12 INDEMNIFICATION	80
	 	 	 
	12.1.	Assembly	80
	 	 	 
	12.2.	Allergan	81
	 	 	 
	12.3.	Notice of Claim	81
	 	 	 
	12.4.	Indemnification Procedure	81
	 	 	 
	12.5.	Expenses	83
	 	 	 
	12.6.	Insurance	83
	 	 	 
	12.7.	Consequential Damages	84
	 	 	 
	ARTICLE 13 MISCELLANEOUS	84
	 	 	 
	13.1.	Assignment	84
	 	 	 
	13.2.	Non-Solicitation of Employees	84

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	iii

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

	13.3.	Governing Law	84
	 	 	 
	13.4.	Dispute Resolution	85
	 	 	 
	13.5.	Force Majeure	85
	 	 	 
	13.6.	Expenses	85
	 	 	 
	13.7.	No Agency	85
	 	 	 
	13.8.	No Third Party Beneficiaries	86
	 	 	 
	13.9.	Entire Agreement; Amendment	86
	 	 	 
	13.10.	Severability	86
	 	 	 
	13.11.	Extension; Waiver	86
	 	 	 
	13.12.	Notices	86
	 	 	 
	13.13	HSR Act Compliance	88
	 	 	 
	13.14.	Further Assurances	89
	 	 	 
	13.15.	No Strict Construction	89
	 	 	 
	13.16.	Headings	89
	 	 	 
	13.17.	Counterparts	89
	 	 	 
	13.18.	Non-Exclusive Remedies	89

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	iv

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

RESEARCh,
DEVELOPMENT, COLLABORATIOn AND LICENSE AGREEMENT

 

THIS RESEARCH, DEVELOPMENT, COLLABORATION
AND LICENSE AGREEMENT (the “Agreement”) is entered into as of January 6, 2017 (the “Execution
Date”).

 

PARTIES:

 

		1.	ASSEMBLY BIOSCIENCES, INC., a company organized
under the laws of Delaware whose registered address is 11711 N. Meridian Street, Suite 310, Carmel, Indiana  46032 (“Assembly”);
and

 

		2.	ALLERGAN PHARMACEUTICALS INTERNATIONAL LIMITED (formerly
known as Aptalis Pharma Ltd.), a company organized under the laws of Ireland with a place of business at Clonshaugh Industrial
Estate, Coolock, Dublin 17, Ireland (“Allergan”).

 

In this Agreement, Allergan and Assembly are
collectively referred to as the “Parties” and each individually a “Party”.

 

BACKGROUND:

 

		A.	Assembly has developed or is developing and owns or controls
certain Microbiome-Based Compounds, technology and other intellectual property intended to treat the indications set forth on
Exhibit A hereto, as such list of indications may be expanded from time to time as described herein.

 

		B.	Allergan has expertise in the Exploitation of pharmaceutical
products.

 

		C.	The Parties desire to enter into a research, development,
collaboration and license agreement with the purpose of further Exploiting certain compounds in development that are owned or
controlled by Assembly and to discover additional new Microbiome-Based Compounds directed to certain indications as described
herein.

 

NOW, THEREFORE, in consideration of
the respective covenants set forth herein, the Parties agree as follows:

 

ARTICLE
1

DEFINITIONS

 

As used in this Agreement,
the following terms shall have the meanings set forth below:

 

1.1.      “201
Compound Candidate” shall mean a composition that [* * *] pursuant to the R&D Plan under this Agreement.

 

1.2.      “301
Compound Candidate” shall mean a composition that [* * *] pursuant to the R&D Plan under this Agreement.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	1

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.3.      “[* * *]
IND” shall mean any IND for a Product Candidate filed by Assembly pursuant to this Agreement (a) for which within
thirty (30) days of such filing, no clinical hold has been placed by a Regulatory Authority and no Regulatory Authority has otherwise
prevented initiation of a Clinical Trial for such Product Candidate and (b) [* * *], during the course of at least one
(1) Clinical Trial of such Product Candidate.

 

1.4.      “Affiliate”
shall mean any individual, corporation, company, partnership, trust, limited liability company, association or other business entity
(“Person”) that directly or indirectly controls, is controlled by or is under common control with the
Party in question at any time for so long as such Party controls, is controlled by or is under common control with such first Person.
As used in this definition of “Affiliate,” the term “control” and, with correlative meanings, the terms
“controlled by” and “under common control with” shall mean, as to any Person, (a) direct or indirect ownership
of at least fifty percent (50%) (or such lesser percentage that is the maximum allowed to be owned by a foreign corporation in
a particular jurisdiction, provided, that such Party has the ability, directly or indirectly, to direct or cause the direction
of management or policies of such Person) of the voting interests or other ownership interests in the Person in question; (b) direct
or indirect ownership of at least fifty percent (50%) of the interest in the income of the Person in question; or (c) possession,
directly or indirectly, of the power to direct or cause the direction of management or policies of the Person in question (whether
through ownership of securities or other ownership interests, by contract or otherwise).

 

1.5.      “Agreement”
shall have the meaning set forth in the preamble hereto.

 

1.6.      “Allergan”
shall have the meaning set forth in the preamble hereto.

 

1.7.      “Allergan
Collaboration IP” shall mean all Patents or Know-How that are Controlled by Allergan or its Affiliates during the
Term that arise out of Allergan’s activities under the R&D Plan. For clarity, the Allergan Collaboration IP includes
Allergan’s interest in the Joint Intellectual Property Rights that are necessary or useful for Assembly to carry out Assembly’s
activities under the R&D Plan.

 

1.8.      “Allergan
Indemnitees” shall have the meaning set forth in Section 12.1.

 

1.9.      “Alliance
Manager” shall have the meaning set forth in Section 3.9.

 

1.10.     “Assembly”
shall have the meaning set forth in the preamble hereto.

 

1.11.     “Assembly
Indemnitees” shall have the meaning set forth in Section 12.2.

 

1.12.     “Assigned
Regulatory Documentation” shall have the meaning set forth in Section 6.2.

 

1.13.     “Audited
Party” shall have the meaning set forth in Section 7.10.2.

 

1.14.     “Auditing
Party” shall have the meaning set forth in Section 7.10.2.

 

1.15.     “Backup
Compound” shall mean (a) any Backup Compound Candidate incorporated in a product administered to subjects in a first-in-human
Clinical Trial or any Clinical Trial conducted under the R&D Plan, in each case for a Permitted Indication or (b) any other
composition [* * *] (and no [* * *]) as a Backup Compound Candidate described in clause (a) of this Section
1.14 (including, for example, a composition [* * *] (and no [* * *]) as a composition described in (a) but
differing [* * *]). A Backup Compound Candidate shall be a “Backup Compound” and no longer a “Backup
Compound Candidate” at the time that such Backup Compound Candidate is administered to a subject in a first-in-human Clinical
Trial or other Clinical Trial conducted under the R&D Plan. For clarity, [* * *] IND.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	2

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.16.     “Backup
Compound Candidate” shall mean any composition, other than an Initial Compound Candidate or New Compound Candidate,
comprising [* * *] and that is selected for further Development by Allergan pursuant to the procedures set forth in Section 4.5,
as [* * *] pursuant to the R&D Plan under this Agreement.

 

1.17.     “Bankruptcy
Code” shall have the meaning set forth in Section 10.6.2.

 

1.18.     “Biosimilar
Application” shall have the meaning set forth in Section 9.1.9(a).

 

1.19.     “Biosimilar
Product” shall mean a biologic product (a) whose Regulatory Approval relies in whole or in part on a prior Regulatory
Approval granted to a Licensed Product, (b) whose Regulatory Approval relies in whole or in part on any pivotal safety or efficacy
data generated in support of a prior Regulatory Approval granted to a Licensed Product; or (c) otherwise meets the criteria for
constituting a “biosimilar” or “interchangeable” product pursuant to Section 351(k) of the Public Health
Service Act (42 U.S.C. § 262(k)) or a “similar biological medicinal product” pursuant to the EU Directive 2001/83/EC
or any successors thereto or any other equivalent provision that comes into effect during the Term, or is the subject of an analogous
determination or has otherwise achieved analogous regulatory approval from another applicable Regulatory Authority.  For clarity,
a product may be a Biosimilar Product regardless of whether it is subject to regulation as a biologic or drug product and regardless
of the route used to obtain approval (for example, whether by Abbreviated New Drug Application, BLA, or under 42 U.S.C. §
262).

 

1.20.     “BLA”
means (a) in the United States, a Biologics License Application, as defined in the United States Public Health Service Act (42
U.S.C. § 262), and applicable regulations promulgated thereunder by the FDA, or any equivalent application that replaces such
application, (b) in the EU, a marketing authorization application, as defined in applicable regulations of the EMA, and (c) in
any other country, the relevant equivalent to the foregoing.

 

1.21.     “Blocking
Third Party IP” shall mean, with respect to any country, any Patent or Know-How in such country controlled by a Third
Party that is necessary or useful to Develop, manufacture, Commercialize or otherwise Exploit a Licensed Compound in the Field
in or for such country.

 

1.22.     “Business
Day” shall mean any Monday, Tuesday, Wednesday, Thursday or Friday that is not a public holiday in New York, New
York.

 

1.23.     “Calendar
Quarter” shall mean a period of three (3) consecutive months corresponding to the calendar quarters commencing on
the first day of January, April, July or October, except that the first Calendar Quarter of the Term shall commence on the Effective
Date and end on the day immediately prior to the first to occur of January 1, April 1, July 1 or October 1 after the Effective
Date and the last Calendar Quarter shall end on the last day of the Term.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	3

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.24.     “Calendar
Year” shall mean a period of twelve (12) consecutive months corresponding to the calendar year commencing on the
first day of January, except that the first Calendar Year of the Term shall commence on the Effective Date and end on December
31 of the year in which the Effective Date occurs and the last Calendar Year of the Term shall commence on January 1 of the year
in which the Term ends and end on the last day of the Term.

 

1.25.     “Change
of Control”, with respect to a Party, shall mean (a) the closing of a sale of all or substantially all of the assets
of such Party to which this Agreement relates to a Third Party in one transaction or series of transactions, (b) the closing of
a merger or other business combination or transaction that results in a Third Party owning, directly or indirectly, of more than
50% of the voting securities of such Party or of its ultimate parent entity, or (c) the closing of a transaction, following which
a Third Party acquires direct or indirect ability or power to direct or cause the direction of the management and policies of such
Party or of its ultimate parent entity or otherwise direct the affairs of such Party or of its ultimate parent entity, whether
through ownership of equity, voting securities, beneficial interest, by contract or otherwise.

 

1.26.     “China
Co-Promotion Option Right” shall have the meaning set forth in Section 5.2.1.

 

1.27.     “Clinical
Quality Agreement” shall have the meaning set forth in Section 6.4.2.

 

1.28.     “Clinical
Trial” shall mean any of a Phase I Clinical Trial, Phase Ib Clinical Trial, Phase IIa Clinical Trial, Phase IIb Clinical
Trial, Phase II Clinical Trial, Phase III Clinical Trial or a clinical trial conducted after obtaining Regulatory Approval.

 

1.29.     “CMO”
shall have the meaning set forth in Section 6.4.1.

 

1.30.     “Combination
Product” shall mean a Licensed Product that is comprised of or contains a Licensed Compound as an active ingredient
together with one (1) or more other active ingredients and is sold either as a fixed dose/unit or as separate doses/units in a
single package.

 

1.31.     “Combination
Sale” shall have the meaning set forth in the definition of Net Sales.

 

1.32.     “Commercialize”
shall mean any and all activities directed to the promotion, marketing, distribution or sale (and offer for sale or import or export
for sale) for a product. “Commercializing” and “Commercialization” shall have
corresponding meanings.

 

1.33.     “Commercially
Reasonable Efforts” shall mean efforts that are not less than those discovery, research, development or commercialization
efforts a Party makes with respect to other compounds or products in its portfolio at a similar stage of development or in a similar
stage of product life, with similar developmental risk profiles and of similar market and commercial potential, based on conditions
then-prevailing and taking into account all other relevant factors including issues of safety and efficacy, the nature and extent
of market exclusivity (including regulatory exclusivity and the patent and other proprietary position of the product), product
labeling or anticipated labeling, performance of other products that are of similar market potential and the likely timing of other
product’s entry into the market, costs, timing, and the likelihood of success of technology transfer, process development
and manufacturing validation and scale-up, the likelihood and cost of obtaining regulatory approval and of the anticipated or actual
approved labeling, financial return, medical and clinical considerations, regulatory environment, the regulatory structure involved,
and other relevant scientific, technical and commercial factors.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	4

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.34.     “Committee
Deadlock” shall have the meaning set forth in Section 3.7.

 

1.35.     “Competing
Compound” shall mean any microbiome modulating product that is actually sold for the same Permitted Indication as
any Licensed Product.

 

1.36.     “Completion”
shall mean, with respect to a POC Trial, that top-line results for such POC Trial that have been generated in accordance with industry
standards and provided to Allergan in accordance with the R&D Plan.

 

1.37.     “Compound
Candidate” shall mean any Initial Compound Candidate, New Compound Candidate or Backup Compound Candidate.

 

1.38.     “Compound
R&D Term” shall have the meaning set forth in Section 4.2.

 

1.39.     “Confidential
Information” shall mean all secret, confidential or proprietary information, Know-How or data, whether provided in
written, oral, graphic, video, computer or other form, that (a) is provided by one Party (the “Disclosing Party”)
to the other Party (the “Receiving Party”) that is marked or otherwise identified as confidential or
that by its nature a reasonable person would understand to be confidential in connection with this Agreement, or (b) constitutes
Licensed Compound Know-How, in each case ((a) and (b)), including information, Know-How or data relating to the Disclosing Party’s
existing or proposed research, development efforts, Patent applications, business, Licensed Compounds or Licensed Products, other
compounds or products and any other materials that have not been made available by the Disclosing Party to Third Parties (other
than under an obligation of confidentiality). Notwithstanding the foregoing sentences, Confidential Information shall not include
any information or materials that:

 

(i)       were
already known to the Receiving Party (other than under an obligation of confidentiality) at the time of disclosure by the Disclosing
Party to the extent such Receiving Party has contemporaneous documentation or other competent evidence to that effect; provided,
that the foregoing exception shall not apply with respect to Joint Know-How or Licensed Compound Know-How;

 

(ii)       were
generally available to the public or otherwise part of the public domain at the time of its disclosure to the Receiving Party;

 

(iii)      became
generally available to the public or otherwise part of the public domain after its disclosure, other than through any act or omission
of a Party in breach of such Party’s confidentiality obligations under this Agreement;

 

(iv)      were
subsequently lawfully disclosed to the Receiving Party by a Third Party who had no obligation to the Disclosing Party not to disclose
such information to others; or

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	5

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(v)     were
independently discovered or developed by or on behalf of the Receiving Party without the use of, reliance on or reference to the
Confidential Information belonging to the other Party and the Receiving Party has contemporaneous documentation or other competent
evidence to that effect; provided, that the foregoing exception shall not apply with respect to Joint Know-How or Licensed
Compound Know-How.

 

Notwithstanding anything
contained herein to the contrary, Confidential Information constituting (x) Licensed Compound Know-How that is material to the
Exploitation of Licensed Compound or Licensed Product and (y) the terms of this Agreement shall each be deemed to be the Confidential
Information of both Parties (and both Parties shall be deemed to be the Receiving Party and the Disclosing Party with respect thereto).

 

1.40.     “Control”
and its correlative terms, “Controlled” or “Controls”, shall mean, with respect
to any intellectual property right or other intangible property, that a Party owns or has a license or sublicense to such item
or right, and has the ability to assign, grant access, license or sublicense, as applicable, in or to such right without violating
the terms of any agreement or other arrangement with any Third Party. For the avoidance of doubt, Third Party intellectual property
shall only be considered “Controlled” by a Party, if the Party has the right to disclose, assign, or grant a license,
sublicense or other right to the other Party as provided for in this Agreement.

 

1.41.     “Controlling
Party” shall have the meaning set forth in Section 9.2.2.

 

1.42.     “Co-Promotion
Agreement” shall have the meaning set forth in Section 5.4.1.

 

1.43.     “Co-Promotion
Option Rights” shall have the meaning set forth in Section 5.2.1.

 

1.44.     “Cover,”
“Covering” or “Covers” means, as to a compound or product and Patent, that,
in the absence of a license granted under, or ownership of, such Patent, the making, using, selling, offering for sale or importation
of such compound or product would infringe such Patent or, as to a pending claim included in such Patent, the making, using, selling,
offering for sale or importation of such compound or product would infringe such Patent if such pending claim were to issue in
an issued patent without modification.

 

1.45.     “CPI”
shall mean the Consumer Price Index – Urban Wage Earners and Clerical Workers, U.S. City Average, All Items, published by
the US Department of Labor, Bureau of Labor Statistics (or its successor equivalent index) in the US.

 

1.46.     “Defending
Party” shall have the meaning set forth in Section 9.3.2.

 

1.47.     “Development”
shall mean any and all activities, including research, discovery, compound identification and generation, non-clinical, pre-clinical
and clinical trials, post approval studies, supporting manufacturing, production process development and formulation and related
regulatory activities directed to obtaining and maintaining Regulatory Approval for a product for an indication. Development shall
include, with respect to any Licensed Compound or Licensed Product, the Optimization of a Compound Candidate or Product Candidate
with the goal of further Developing such resultant Licensed Compound or Licensed Product. “Develop” and
“Developing” shall have corresponding meanings.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	6

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.48.     “Development
Costs” shall mean the costs and expenses incurred by or on behalf of a Party or its Affiliates in connection with
the Development of Licensed Compounds or Licensed Products in the Field, including without limitation (a) costs of each Party’s
or its Affiliates’ employees supporting such efforts (calculated as the FTE Costs), (b) all out-of-pocket costs of procuring
services, products or materials used in the Development of Licensed Compounds or Licensed Products in the Field, (c) any amounts
paid to clinical research organizations or other Third Parties engaged to conduct Development activities and (d) amounts paid to
Third Party contractors to supply Licensed Compounds or Licensed Products for Development. “Development Costs” shall
include without limitation all costs of toxicological, pharmacokinetic, metabolical studies, Clinical Trials, the preparation,
collation and/or validation of data from such studies and the preparation of medical writing and publishing, which include expenses
for data management, statistical designs and studies, document preparation, and other administrative expenses associated with the
clinical testing program or post-marketing studies required or necessary to maintain product approvals, development of quality
assurance and quality control procedures and protocols, formulation development and other nonclinical and preclinical studies for
Licensed Compounds or Licensed Products. For the avoidance of doubt, “Development Costs” shall not include any costs
of procuring capital equipment used in Development.

 

1.49.     “Development
Milestone Events” shall have the meaning set forth in Section 7.2.1.

 

1.50.     “Development
Milestone Payments” shall have the meaning set forth in Section 7.2.1.

 

1.51.     “Disclosing
Party” shall have the meaning set forth in Section 1.39.

 

1.52.     “Distributor”
shall mean any Third Party that purchases its requirements for Licensed Product in final packaged form from Allergan or its Affiliates
or Sublicensees and is appointed as a distributor to distribute, market and resell such Licensed Product in a country, regardless
of whether such Third Party is granted ancillary rights to further develop, package or obtain regulatory approvals of Licensed
Product in order to distribute, market or sell Licensed Product; provided that a Third Party that pays Allergan, or an Affiliate
or Sublicensee of Allergan, a royalty or similar payment based on the sale or transfer by such Third Party of Licensed Product
shall be a Sublicensee, and not a Distributor, for purposes of this Agreement.

 

1.53.     “DOJ”
shall have the meaning set forth in Section 1.81.

 

1.54.     “Effective
Date” shall mean (a) if Assembly delivers to Allergan representations and warranties that are identical to the representations
and warranties delivered as of the Execution Date in accordance with clause (a) of Section 11.6, the second (2nd) Business Day
following the date on which HSR Clearance occurs, (b) if Assembly is deemed to have delivered representations and warranties that
are identical to the representations and warranties as of the Execution Date pursuant to Section 11.6, the third (3rd) Business
Day following the date on which HSR Clearance occurs, or (c) if Assembly makes any supplement or amendment to its representations
and warranties in accordance with clause (b) of Section 11.6 and Allergan does not exercise its right pursuant to Section 10.10
to cause the Agreement not to come into effect, the sixth (6th) Business Day following Assembly making such amendment or supplement.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	7

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.55.     “EMA”
shall mean the European Medicines Agency and any successor or replacement agency.

 

1.56.     “Establishment
of POC” shall mean, as to a specific Licensed Product, the generation of data from the first POC Trial of such Licensed
Product that demonstrates to Allergan’s satisfaction that such Licensed Product has efficacy for treatment of a particular
indication using a specific dosing regimen with no adverse events that would reasonably warrant discontinuation of Development
of such Licensed Product for such indication.

 

1.57.     “EU”
shall mean the European Union as of the Effective Date.

 

1.58.     “EU
Major Markets” shall mean the United Kingdom, Germany, France, Spain and Italy.

 

1.59.     “Exclusivity
Term” shall have the meaning set forth in Section 2.4.1.

 

1.60.     “Execution
Date” shall have the meaning set forth in the preamble hereto.

 

1.61.     “Existing
In-License Agreements” shall have the meaning set forth in Section 11.2.10.

 

1.62.     “Existing
Regulatory Documentation” shall mean the Regulatory Documentation Controlled by Assembly or any of its Affiliates
as of the Effective Date.

 

1.63.     “Exploit”
shall mean to make, have made, import, use, sell or offer for sale, including to Develop, Commercialize, register, hold or keep
(whether for disposal or otherwise), have used, export, transport, distribute, promote, market or have sold or otherwise dispose
of. “Exploitation” shall mean the act of Exploiting a compound, product or process.

 

1.64.     “Facility
Deadline” shall have the meaning set forth in Section 6.4.3(a).

 

1.65.     “FD&C
Act” means the Federal Food, Drug and Cosmetic Act, as the same may be amended or supplemented from time to time.

 

1.66.     “FDA”
shall mean the US Food and Drug Administration, and any successor or replacement agency.

 

1.67.     “Field”
shall mean the treatment, prevention or diagnosis of any human or animal disease or condition.

 

1.68.     “FTC”
shall have the meaning set forth in the definition of HSR Filing.

 

1.69.     “FTE”
shall mean the equivalent of the work of one (1) employee full time for one (1) Calendar Year (consisting of at least a total of
[* * *] hours per Calendar Year) of work directly related to the Development of a Licensed Compound or a Licensed Product. Any
person who works more than [* * *] hours per Calendar Year and any person who devotes less than [* * *] hours per Calendar Year
(or such other number as may be agreed by the JDC) shall be treated as an FTE on a pro rata basis based upon the actual number
of hours worked divided by eighteen hundred (1800).

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	8

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.70.     “FTE
Cost” means, for any period, the FTE Rate multiplied by the number of FTEs in such period.

 

1.71.     “FTE
Rate” shall mean a rate of USD $[* * *] per FTE per annum (reflecting the fully burdened cost of the FTE), exclusive
of VAT and increasing on each January 1 following the first anniversary of the Effective Date during the R&D Term by a percentage
increase equal to the percentage increase, if any, in the CPI reported for the immediately preceding Calendar Year. For the avoidance
of doubt, such rate includes (a) all salaries, wages, bonuses, benefits, management fees, profit sharing, stock option grants and
FICA costs and other similar costs, national insurance and pension contributions, meals and entertainment, training, recruiting,
relocation, operating supplies and equipment, materials, consumables and other disposable goods to the extent required for the
performance of the applicable services and (b) managerial and other overhead costs associated with such FTE and the performance
of his or her activities hereunder.

 

1.72.     “Force
Majeure Event” shall have the meaning set forth in Section 13.5.

 

1.73.     “GAAP”
shall mean United States generally accepted accounting principles, consistently applied.

 

1.74.     “Good
Clinical Practice” or “GCP” shall mean the then-current good clinical practice applicable
to the clinical Development of a Licensed Product under applicable Law, including the ICH guidelines, U.S. Good Clinical Practice
and clause 2 of ARTICLE 1 of European Union directive on the conduct of clinical trials 2001/20/EC.

 

1.75.     “Good
Laboratory Practice” or “GLP” shall mean the then-current Good Laboratory Practice Standards
promulgated or endorsed by the FDA or in the case of any other country in the Territory, comparable regulatory standards promulgated
or endorsed by the Regulatory Authorities in that country.

 

1.76.     “Good
Manufacturing Practice” or “GMP” shall mean the then-current Good Manufacturing Practices
as specified in the United States Code of Federal Regulations, ICH Guideline Q7A, or equivalent Laws of an applicable Governmental
Authority of any other relevant country at the time of manufacture.

 

1.77.     “Governmental
Authority” shall mean any court, tribunal, arbitrator, agency, department, board, division, administration, legislative
body, commission, official or other instrumentality of (a) any government of any country, (b) a federal, state, province, county,
city or other political subdivision thereof or (c) any international, multinational or supranational body.

 

1.78.     “Gross
Combination Sale Amount” shall have the meaning set forth in the definition of Net Sales.

 

1.79.     “HSR
Act” shall mean the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and the rules and regulations
promulgated thereunder.

 

1.80.     “HSR
Clearance” shall mean, with respect to this Agreement, the expiration or termination of all applicable waiting periods
and requests for information (and any extensions thereof) under the HSR Act.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	9

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.81.     “HSR
Filing” shall mean filings by Allergan and Assembly with the United States Federal Trade Commission (the “FTC”)
and the Antitrust Division of the United States Department of Justice (the “DOJ”) of a Notification and
Report Form for Certain Mergers and Acquisitions (as that term is defined in the HSR Act) with respect to the matters set forth
in this Agreement, together with all required documentary attachments thereto.

 

1.82.     “ICC”
shall have the meaning set forth in Section 13.4.

 

1.83.     “ICH”
means the International Conference on Harmonization of Technical Requirements for Registration of Pharmaceuticals for Human Use.

 

1.84.     “IND”
shall mean any Investigational New Drug application, as defined in Title 21 of the Code of Federal Regulations, on file with the
FDA before commencement of Clinical Trials, or any comparable filing with any relevant Regulatory Authority in any country or jurisdiction
in the Territory including a clinical trial application.

 

1.85.     “Indemnification
Claim Notice” shall have the meaning set forth in Section 12.3.

 

1.86.     “Indemnified
Party” shall have the meaning set forth in Section 12.3.

 

1.87.     “Indemnifying
Party” shall have the meaning set forth in Section 12.3.

 

1.88.     “Indemnitees”
shall have the meaning set forth in Section 12.3.

 

1.89.     “Independent
Price” shall have the meaning set forth in Section 1.117.

 

1.90.     “Initial
Compound” shall mean (a) any Initial Compound Candidate incorporated in a product administered to subjects in a first-in-human
Clinical Trial or any Clinical Trial conducted under the R&D Plan, in each case for a Permitted Indication or (b) any other
composition [* * *] (and no [* * *]) as an Initial Compound Candidate described in clause (a) of this Section (including, for example,
[* * *] (and no [* * *]) as a composition described in (a) but differing [* * *]). An Initial Compound Candidate shall be an “Initial
Compound” and no longer an “Initial Compound Candidate” at the time that such Initial Compound Candidate is administered
to a subject in a first-in-human Clinical Trial or other Clinical Trial conducted under the R&D Plan. For clarity, multiple
[* * *] IND.

 

1.91.     “Initial
Compound Candidate” shall mean each and either of the 201 Compound Candidate or the 301 Compound Candidate.

 

1.92.     “Initial
Indication Development Costs” shall have the meaning set forth in Section 4.8.2(a).

 

1.93.     “Initial
Indications” shall mean (a) ulcerative colitis, (b) Crohn’s disease, (c) irritable bowel syndrome with constipation
(IBS-c), (d) irritable bowel syndrome with diarrhea (IBS-d) and (e) and mixed irritable bowel syndrome (IBS-m). It is contemplated
as of the Effective Date that the 201 Compound Candidate will initially be Developed for ulcerative colitis and that the 301 Compound
Candidate will initially be Developed for Crohn’s disease.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	10

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.94.     “Initiation”
of a Clinical Trial shall mean the dosing of the first subject in the relevant Clinical Trial of a Licensed Product.

 

1.95.     “In-License
Agreements” shall mean the Existing In-License Agreements and any other agreements deemed In-License Agreements pursuant
to Section 2.3.4.

 

1.96.     “Invalidity/Unenforceability
Action” shall have the meaning set forth in Section 9.2.1.

 

1.97.     “Joint
Intellectual Property Rights” shall have the meaning set forth in Section 9.3.

 

1.98.     “Joint
Know-How” shall have the meaning set forth in Section 9.3.

 

1.99.     “Joint
Patents” shall have the meaning set forth in Section 9.3.

 

1.100.   “Joint
Co-Promotion Committee” or “JCC” shall have the meaning set forth in Section 5.3.

 

1.101.    “Joint
Development Committee” or “JDC” shall have the meaning set forth in Section 3.1.

 

1.102.    “Know-How”
shall mean all technical, scientific and other know-how and information, trade secrets, knowledge, technology, methods, processes,
practices, formulae, instructions, skills, techniques, procedures, ideas, concepts, designs, drawings, specifications, data, results
and other material (together with all improvements to any of the foregoing).

 

1.103.    “Knowledge”
shall mean, with respect to each Party, the actual knowledge of any of the individuals listed on Schedule 1.103, in each case after
due inquiry of such named individuals’ files and records and of outside counsel (including patent counsel, as applicable)
and those employees of such Party or its Affiliates who are such named individuals’ direct reports or are otherwise responsible
for the relevant activity or subject matter.

 

1.104.    “Launch”
shall mean, with respect to a Licensed Product for a particular Permitted Indication and a country in the Territory, the first
invoiced commercial sale by Allergan, its Affiliates or their respective Sublicensees in the Territory for monetary value for use
by the end user of such Licensed Product in such country for such Permitted Indication after receipt of all Regulatory Approvals
for such Licensed Product for such Permitted Indication in such country, including, if applicable, commercially reasonable pricing
and reimbursement approvals; provided that commercially reasonable pricing and reimbursement approvals shall be deemed to
have been received with respect to a Licensed Product for a particular Permitted Indication in a country in the Territory in the
event Net Sales of such Licensed Product for such Permitted Indication in any Calendar Year in such country exceed [* * *] USD
($[* * *]).

 

1.105.    “Law”
shall mean all laws, statutes, ordinances, rules, rulings, treaties, procedures, notices, regulations, writs, judgments, decrees,
injunctions (whether preliminary or final), orders and other pronouncements having the effect of law of any Governmental Authority
that may be in effect from time to time.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	11

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.106.     “Licensed
Compound” shall mean any (a) Initial Compound, (b) New Compound and (c) Backup Compound.

 

1.107.     “Licensed
Compound Know-How” shall mean, subject to Section 2.3.4, all Know-How (a) owned or Controlled by Assembly or any
of its Affiliates (including Joint Know-How) as of the Effective Date or during the Term that is necessary or useful for the Development
(including activities under any R&D Plan), manufacture, Commercialization or other Exploitation of Licensed Compounds or Licensed
Products for the Initial Indications or any other indications set forth on Exhibit A and (b) Controlled by Assembly or any of its
Affiliates (including Joint Know-How) upon or following the exercise by Allergan of an option pursuant to Section 2.7.1 that is
necessary or useful for the Development (including activities under any R&D Plan), manufacture, Commercialization or other
Exploitation of Licensed Compounds or Licensed Products for any Option Indication that becomes a Permitted Indication pursuant
to the exercise of such option.

 

1.108.     “Licensed
Compound Patents” shall mean, subject to Section 2.3.4, (a) the Patent(s) listed on Schedule 1.108, and (b)
any other Patents that are (i) owned or Controlled by Assembly or any of its Affiliates as of the Effective Date or during the
Term (including Joint Patents) that would be infringed, absent a license, by Developing, making, using, selling, offering for sale,
importing, or otherwise Exploiting any Licensed Compound or Licensed Product for the Initial Indications or any other indications
set forth on Exhibit A and (ii) Controlled by Assembly or any of its Affiliates (including Joint Patents) upon or following the
exercise by Allergan of an option pursuant to Section 2.7.1 that would be infringed, absent a license, by Developing, making, using,
selling, offering for sale, importing, or otherwise Exploiting any Licensed Compound or Licensed Product for any Option Indication
that becomes a Permitted Indication pursuant to the exercise of such option and, in each case (clauses (i) and (ii)), such additional
Patents to be included on Schedule 1.108 as it may be updated from time to time; provided, that, a failure to so
include a Patent on Schedule 1.108 that otherwise meets the definition of a Licensed Compound Patent shall not preclude
such Patent from being deemed a Licensed Compound Patent hereunder.

 

1.109.      “Licensed
Product” shall mean any product incorporating a Licensed Compound, in any form or formulation.

 

1.110.     “Losses”
shall have the meaning set forth in Section 12.1.

 

1.111.     “Manufacturing
Facility” shall have the meaning set forth in Section 6.4.3.

 

1.112.     “Materials”
shall mean any tangible chemical or biological material, including any small molecules, DNA, RNA, clones, cells, and any expression
product, progeny, derivative or other improvement thereto, along with any tangible chemical or biological material.

 

1.113.     “Microbiome-Based
Compound” shall mean a compound [* * *]. For clarity, a compound that comprises [* * *], shall not be considered
a Microbiome-Based Compound hereunder.

 

1.114.     “Milestone
Payments” shall have the meaning set forth in Section 7.2.2.

 

1.115.     “Milestone
Events” shall have the meaning set forth in Section 7.2.2.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	12

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.116.     “Mono
Product” shall have the meaning set forth in Section 1.117.

 

1.117.     “Net
Sales” shall mean, with respect to a Licensed Product in a country in the Territory, the gross amount invoiced for
sale or other disposition of such Licensed Product in such country by Allergan, its Affiliates or Sublicensees to Third Parties
(including Distributors, wholesalers and end users), less the following deductions accounted for in accordance with GAAP:

 

(a)     sales
returns and allowances actually paid, granted or accrued on the Licensed Product, including trade quantity, prompt pay and cash
discounts and any other adjustments, including those granted on account of price adjustments or billing errors;

 

(b)      credits
or allowances given or made for rejection, recall, return or wastage replacement of Licensed
Products or for rebates or retroactive price reductions;

 

(c)      price
reductions, rebates and chargeback payments granted to managed health care organizations, pharmacy benefit managers (or equivalents
thereof), national, state/provincial, local, and other governments, their agencies and purchasers and reimbursers, or to trade
customers (including Medicare, Medicaid, managed care and similar types of rebates and chargebacks);

 

(d)       costs
of freight, insurance, and other transportation charges, as well as any administration fees or other fees for services provided
by wholesalers, distributors, warehousing chains and other Third Parties related to the distribution of such Licensed Product;

 

(e)       taxes,
duties or other governmental charges (including any tax such as a value added or similar tax, other than any taxes based on income)
relating to the sale of such Licensed Product, as adjusted for rebates and refunds, including pharmaceutical excise taxes;

 

(f)       the
portion of administrative fees paid during the relevant time period to group purchasing organizations or pharmaceutical benefit
managers relating to such Licensed Product;

 

(g)       any
consideration actually paid or payable for any delivery system which is reflected as a separate item in the applicable gross amount
invoiced for such Licensed Product; and

 

(h)       any
other similar and customary revenue deductions that are consistent with GAAP;

 

to the extent such deductions: (i) are applicable
and in accordance with standard allocation procedures, (ii) have not already been deducted or excluded, (iii) are incurred in the
ordinary course of business, and (iv) except with respect to the pharmaceutical excise taxes described in subsection (e) above,
are determined in accordance with, and as recorded in revenues under GAAP. Net Sales shall not be imputed to transfers of Licensed
Product without consideration or for nominal consideration for use in any clinical trial, or for any bona fide charitable, compassionate
use or indigent patient program purpose or as a sample. For the avoidance of doubt, in the case of any transfer of any Licensed
Product between or among Allergan and its Affiliates or Sublicensees for resale, Net Sales shall be determined based on the sale
made by such Affiliate or Sublicensee to a Third Party.  In the case of any sale for value, such as barter or counter-trade,
of a Licensed Product, or part thereof, other than in an arm’s length transaction exclusively for cash, Net Sales shall be
deemed to be the Net Sales at which substantially similar quantities of such Licensed Product are sold for cash in an arm’s
length transaction in the relevant country.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	13

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

In the event that any Licensed
Product is sold as a Combination Product (a “Combination Sale”), the Net Sales amount for such
Licensed Product sold in such a Combination Sale in any period and country shall be calculated by multiplying the gross amount
invoiced for the Combination Sale (the “Gross Combination Sale Amount”), less all deductions in (a)-(i)
above (“Permitted Deductions”), by the fraction, the numerator of which is the wholesale acquisition
cost charged by Allergan or its Affiliates in such period and country for a Licensed Product containing the Licensed Compound(s)
in the Combination Product as its sole active ingredients (the “Mono Product(s)”), if such Mono Product
is sold separately by Allergan or its Affiliates in such period and country (the “Independent Price(s)”),
and the denominator is the Independent Price(s) plus the wholesale acquisition cost charged by Allergan or its Affiliates for product(s)
containing as their sole active ingredient(s) those active ingredients that are not Licensed Compounds included in the Combination
Product (“Other Product(s)”) if such Other Product(s) are sold separately by Allergan or its Affiliates
in such period and country, in each case for a quantity comparable to that used in such Combination Product and of substantially
the same class, purity and potency or functionality, as applicable; provided that if any of such Other Product(s) are not
sold separately by Allergan or its Affiliates, but are independently marketed by one or more Third Parties, in such period and
country, then such product(s) shall be deemed to be separately sold by Allergan or its Affiliates at the average wholesale acquisition
costs charged by such Third Parties for purposes of the calculations in this paragraph; and provided, further, if the calculation
of Net Sales resulting from a Combination Sale cannot be determined by the foregoing method, the calculation of Net Sales for such
Combination Sale shall be calculated based upon the relative value of the active components of such Combination Product as reasonably
determined by the mutual agreement of the Parties in good faith.

 

Notwithstanding anything
to the contrary contained herein, sales of a Licensed Product (w) that uses a Licensed Product as the reference-listed
drug in a so-called 351(k) BLA or other similar filing under applicable Law by any Sublicensee, (x) by any Sublicensee that has
received a license from Allergan in settlement of any dispute or pursuant to any judgment, (y) by a Sublicensee pursuant to a compulsory
license or (z) as to which Allergan does not receive any monetary consideration tied to sales of such Licensed Product, shall not
be considered Net Sales for purposes of this Agreement, in each case of clauses (w) through (z) except to the extent Allergan receives
consideration based on such Sublicensee’s sales of the Licensed Product in which case such consideration received by Allergan
shall be deemed Net Sales. 

 

1.118.     “New
Compound Candidate” shall mean any composition comprising [* * *] based on or discovered using Assembly’s microbiome
program platform that is intended to treat irritable bowel syndrome with constipation (IBS-c), irritable bowel syndrome with diarrhea
(IBS-d) or mixed irritable bowel syndrome (IBS-m) and is selected for further Development by Allergan as a “New Compound
Candidate” pursuant to the procedures set forth in Section 4.4, as such composition may be Optimized pursuant to the R&D
Plan under this Agreement.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	14

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.119.     “New
Compound” shall mean (a) any New Compound Candidate incorporated in a product administered to subjects in a first-in-human
Clinical Trial or any Clinical Trial conducted under the R&D Plan, in each case for a Permitted Indication or (b) any other
composition [* * *] (and no [* * *]) as a New Compound Candidate described in clause (a) of this Section (including, for example,
a composition [* * *] (and no [* * *]) as a composition described in (a) but differing [* * *]). A New Compound Candidate shall
be a “New Compound” and no longer a “New Compound Candidate” at the time that such New Compound Candidate
is administered to a subject in a first-in-human Clinical Trial or other Clinical Trial conducted under the R&D Plan. For clarity,
[* * *] IND.

 

1.120.      “Optimization”
shall mean, with respect to a Product Candidate and a particular Permitted Indication, Development activities conducted with respect
to such Product Candidate under the R&D Plan in order to adjust the composition of such Product Candidate to optimize the safety
or efficacy of such Product Candidate for such Permitted Indication prior to the Initiation of a POC Trial. “Optimization”
shall include the following activities: (a) [* * *] the Compound Candidate included in such Product Candidate; (b) [* * *] the
Compound Candidate included in such Product Candidate, such [* * *] then comprising the Compound Candidate, (c) [* * *] in the
Compound Candidate included in such Product Candidate; (d) [* * *] to the Compound Candidate or [* * *] from the Compound Candidate,
in each case included in such Product Candidate; or (e) [* * *] the Compound Candidate included in such Product Candidate, including
[* * *].

 

1.121.      “
Option Exercise Fee” shall have the meaning set forth in Section 2.7.1.

 

1.122.      “Option
Indications” shall have the meaning set forth in Section 2.7.1.

 

1.123.      “Option
Indication Right” shall have the meaning set forth in Section 2.7.1.

 

1.124.      “Option
Notice” shall have the meaning set forth in Section 2.7.1.

 

1.125.      “Other
Product(s)” shall have the meaning set forth in the definition of Net Sales.

 

1.126.      “Party”
and “Parties” shall have the meaning set forth in the preamble hereto.

 

1.127.      “Patents”
shall mean (a) all patents or patent applications, including any continuations, continuations-in-part, divisions, provisional,
converted provisional, continued prosecution or substitute applications, (b) any patent issued with respect to any of the foregoing
patent applications, including utility models, petty patents, innovation patents and design patents and certificates of invention,
(c) any reissue, reexamination, renewal, restoration or extension (including any supplementary protection certificate and the like)
of any of the foregoing patents or patent applications, (d) any confirmation patent or registration patent or patent of addition
based on any such patent, (e) any similar rights, including so-called pipeline protection or any importation, revalidation, confirmation
or introduction patent or registration patent or patent of additions to any of such foregoing patent applications and patents,
and (f) all foreign counterparts of any of the foregoing, or as applicable portions thereof or individual claims therein.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	15

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.128.      “Patent
Challenge” shall have the meaning set forth in Section 10.5.

 

1.129.      “Permitted
Deductions” shall have the meaning set forth in the definition of Net Sales.

 

1.130.      “Permitted
Indications” shall mean (a) the Initial Indications (other than any Initial Indication with respect to which Allergan
has provided a notice to Assembly pursuant to Section 2.4.2 following the delivery of any such notice), (b) any other indications
set forth on Exhibit A hereto and (c) any Option Indications for which Allergan has exercised the Option Indication Right.

 

1.131.      “Personal
Information” shall have the meaning set forth in Section 11.5.1.

 

1.132.      “Phase
of Development Multiple” shall have the meaning set forth in Section 2.7.2.

 

1.133.      “Phase
I Clinical Trial” shall mean, as to a specific Licensed Product, the first clinical study of such Licensed Product
conducted in humans but excluding so-called “phase 0 trials” conducted using very small doses in fewer than twenty
(20) people.

 

1.134.     “Phase
II Clinical Trial” shall mean, as to a specific Licensed Product, a well-controlled, closely monitored human clinical
trial that is intended to evaluate the safety and effectiveness of such Licensed Product for a particular indication or indications
in patients with the disease or indication under study or would otherwise satisfy the requirements of 21 C.F.R. 312.21(b) as amended
from time to time, or the corresponding regulation in jurisdictions other than the United States.

 

1.135.     “Phase
IIb Clinical Trial” shall mean, as to a specific Licensed Product, a Phase II Clinical Trial that is intended to
make a further determination of the effectiveness and safety of such Licensed Product for a particular indication or indications
in patients with the disease or indication under study, at the intended clinical dose or doses or range of doses, on a sufficient
number of subjects and for a sufficient duration to confirm the optimal manner of use of such Licensed Product (dose and dose regimen)
prior to Initiation of one or more pivotal Phase III Clinical Trials or filing for a Regulatory Approval without the Initiation
of such pivotal Phase III Clinical Trials.

 

1.136.      “Phase
III Clinical Trial” shall mean, as to a specific Licensed Product, a clinical study in humans, performed to gain
evidence of statistical significance of the efficacy of such Licensed Product in a target patient population, and to obtain expanded
evidence of safety for such Licensed Product that is needed to evaluate the overall benefit-risk relationship of such Licensed
Product and provide an adequate basis for obtaining Regulatory Approval, including physician labeling, as described in 21 C.F.R.
312.21(c) as amended from time to time, or the corresponding regulation in jurisdictions other than the United States.

 

1.137.      “POC
Trial” shall mean, as to a specific Licensed Compound, the first Clinical Trial of a Licensed Product incorporating
such Licensed Compound designed to demonstrate that a Licensed Product incorporating such Licensed Compound has efficacy for treatment
of a particular indication using a specific dosing regimen.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	16

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.138.      “PPACA”
shall mean the Patient Protection and Affordable Care Act, as modified by the Health Care and Education Reconciliation Act.

 

1.139.      “Product
Candidate” shall mean any product incorporating a Compound Candidate, in any form or formulation, prior to Completion
of the first POC Trial for such product.

 

1.140.      “Product
Only Claims” shall have the meaning set forth in Section 9.1.2.

 

1.141.      “Product
Only Patents” shall mean any Licensed Compound Patent that solely Covers Licensed Compounds and/or Licensed Products,
including the composition, method of use, delivery and manufacture of Licensed Compounds and/or Licensed Products. For clarity,
whether a Licensed Compound Patent is a Product Only Patent shall be determined without regard [* * *] that the Licensed Compound
Patent claims.

 

1.142.      “Product
Related Patents” shall mean any Licensed Compound Patent that Covers Licensed Compounds and/or Licensed Products
that are not Product Only Patents.

 

1.143.      “Product
Trademarks” shall mean the Trademark(s) used or to be used by Allergan or its Affiliates or its or their Sublicensees
for the Commercialization of Licensed Products in the Territory and any registrations thereof or any pending applications relating
thereto in the Territory, including any unregistered Trademark rights related to the Licensed Products as may exist through use
before, on or after the Effective Date (excluding, in any event, any trademarks, service marks, names or logos that include any
corporate name or logo of the Parties or their Affiliates or its or their Sublicensees).

 

1.144.      “Prosecuting
Party” shall have the meaning set forth in Section 9.2.2.

 

1.145.      “Regulatory
Approval” shall mean any and all approvals (including applicable pricing and reimbursement approvals), licenses,
registrations or authorizations of any Regulatory Authority, necessary to commercially distribute, sell or market a product in
a country.

 

1.146.      “Regulatory
Authority” shall mean any national, supranational, regional, state or local regulatory agency, administration, department,
bureau, commission, council or other governmental entity including the FDA and the EMA and any other agencies in any country involved
in the granting or receipt of Regulatory Approvals.

 

1.147.      “Regulatory
Documentation” shall mean all (a) applications (including all INDs), registrations, licenses, authorizations
and Regulatory Approvals; (b) correspondence and reports submitted to or received from Regulatory Authorities (including minutes
and official contact reports relating to any communications with any Regulatory Authority) and all documents cited therein, including
as applicable, all adverse event files and complaint files; and (c) clinical, chemistry, manufacturing and controls and other data
contained or relied upon in any of the foregoing; in each case ((a), (b) and (c)) relating to a Licensed Compound or a Licensed
Product.

 

1.148.      “Regulatory
Exclusivity” shall mean any exclusive marketing rights or data exclusivity rights conferred by any Regulatory Authority,
or otherwise by statute, with respect to a Licensed Product other than Patents, including rights conferred in the US under the
Hatch-Waxman Act or rights similar thereto outside the US and including orphan drug designations or approvals.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	17

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.149.      “Restricted
Party” shall have the meaning set forth in Section 2.4.4.

 

1.150.      “R&D
Budget” shall mean the R&D Budget (Initial Indications) and the R&D Budget (New Indications) collectively.

 

1.151.      “R&D
Budget (Initial Indications)” shall mean the budget prepared by Assembly and mutually agreed upon by the Parties
for Assembly’s activities with respect to a Compound Candidate, Product Candidate, Licensed Compound or Licensed Product
being Developed for an Initial Indication under this Agreement, as such budget may be modified from time to time by mutual agreement
of the Parties.

 

1.152.      “R&D
Budget (New Indications)” shall mean the budget prepared by Assembly and mutually agreed upon by the Parties for
Assembly’s activities with respect to a Compound Candidate, Product Candidate, Licensed Compound or Licensed Product being
Developed for a Permitted Indication other than an Initial Indication under this Agreement, as such budget may be modified from
time to time by mutual agreement of the Parties.

 

1.153.      “R&D
Plan” shall mean the plan of work, a preliminary version of which is set out at Schedule 1.153 as such plan
of work may be finalized and amended in accordance with this Agreement. The R&D Budget shall be a part of the R&D Plan.

 

1.154.      “R&D
Term” shall mean the period beginning on the Effective Date and ending upon the first day on which there are no Compound
R&D Terms in effect for any Compound Candidates or Licensed Compounds.

 

1.155.      “Receiving
Party” shall have the meaning set forth in Section 1.39.

 

1.156.      “Restricted
Indication” shall mean (a) in the event that the relevant Restricted Party is Allergan, any Initial Indication (other
than any Initial Indication with respect to which Allergan has provided a notice to Assembly pursuant to Section 2.4.2 following
the delivery of any such notice) and (b) in the event that the relevant Restricted Party is Assembly, any Permitted Indication
that is not an Option Indication.

 

1.157.      “Retained
Regulatory Documentation” has the meaning set forth in Section 6.2.

 

1.158.      “Reversion
IP” shall have the meaning set forth in Section 10.8.4(c).

 

1.159.      “Reversion
Product” shall have the meaning set forth in Section 10.8.4(c).

 

1.160.      “Royalty
Payment” shall have the meaning set forth in Section 7.3.

 

1.161.      “Royalty
Term” shall have the meaning set forth in Section 7.3.

 

1.162.      “Sales
Milestone Events” shall have the meaning set forth in Section 7.2.2.

 

1.163.      “Sales
Milestone Payments” shall have the meaning set forth in Section 7.2.2.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	18

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.164.      “Senior
Officer” shall mean the Chief Executive Officer of Assembly and Chief R&D Officer of Allergan or the functional
successor in their respective organizations, or their respective designees at Senior Vice President level or above.

 

1.165.      “Specifications”
shall have the meaning set forth in Section 6.4.2.

 

1.166.      “[*
* *]” shall mean [* * *].

 

1.167.      “Sublicensee”
shall mean a Third Party to whom Allergan has granted a right to Exploit a Licensed Product, excluding (a) Distributors and (b)
wholesalers of biopharmaceutical products, including, for example, McKesson Corporation, AmerisourceBergen and Cardinal Health.

 

1.168.      “Supply
Agreement” shall have the meaning set forth in Section 6.4.5.

 

1.169.      “Term”
shall have the meaning set forth in Section 10.1.

 

1.170.      “Termination
Date” shall mean the effective date of termination of this Agreement in accordance with its terms.

 

1.171.      “Territory”
shall mean worldwide.

 

1.172.      “[*
* *]” shall mean [* * *] and its successors and assigns under the [* * *] Agreement.

 

1.173.      “[*
* *] Agreement” shall mean that certain License and Collaboration Agreement effective as of [* * *], by and between
[* * *] and [* * *].

 

1.174.      “[*
* *] Letter” shall mean the letter between [* * *] and Assembly dated as December 23, 2016.

 

1.175.      “Third
Party” shall mean any Person who is not a Party or an Affiliate of a Party.

 

1.176.      “Third
Party Infringement Claim” shall have the meaning set forth in Section 9.3.1.

 

1.177.      “Third
Party Claim” shall have the meaning set forth in Section 12.1(a).

 

1.178.      “Third
Party Patents” shall mean [* * *].

 

1.179.      “Third
Party Payments” shall have the meaning set forth in Section 7.4.3.

 

1.180.      “Trademark”
shall mean any word, name, symbol, color, shape, designation or any combination thereof, including any trademark, service mark,
trade name, brand name, sub-brand name, trade dress, product configuration, program name, delivery form name, certification mark,
collective mark, logo, tagline, slogan, design or business symbol, that functions as an identifier of source or origin, whether
or not registered and all statutory and common law rights therein and all registrations and applications therefor, together with
all goodwill associated with, or symbolized by, any of the foregoing.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	19

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.181.     “US”
and “USA” shall mean the United States of America, including all of its territories and possessions.

 

1.182.     “USA
Co-Promotion Option Right” shall have the meaning set forth in Section 5.1.1.

 

1.183.     “USD”
shall mean United States Dollars.

 

1.184.     “Valid
Claim” shall mean:

 

(a)     a
claim of an issued and unexpired patent included within the Licensed Compound Patents that has not been abandoned, cancelled or
held permanently revoked, unenforceable or invalid by a decision of a court or other governmental agency of competent jurisdiction
unappealed within the time allowed for appeal, or that has not been admitted to be invalid or unenforceable through reissue or
disclaimer or otherwise; or

 

(b)     a
claim of a pending patent application included within the Licensed Compound Patents, which patent application was filed and is
being prosecuted in good faith and has not been cancelled, withdrawn from consideration, abandoned or finally disallowed without
the possibility of appeal or refiling of the application and that has not been pending for more than seven (7) years from the earliest
date from which the patent application claims priority. If the patent application is a continuation, divisional or other continuing
application, the seven (7) year period mentioned above shall be calculated from the first application filed in the series of applications.

 

(c)     If
a claim of a pending patent application included within the Licensed Compound Patents that claims a Licensed Compound is pending
in a country for more than seven (7) years from the earliest date from which the patent application claims priority but is subsequently
issued, then such issued patent claim shall not be reinstated as a Valid Claim, unless such patent issues (i) prior to the Launch
of a Licensed Product containing such Licensed Compound in such country, or (ii) following the Launch of a Licensed Product containing
such Licensed Compound in such country, if during the entire time between Launch and such issuance, (A) the Royalty Term with respect
to such Licensed Product in such country has been in effect due to events described in clause (a) or clause (b)(i) of Section 7.3
and (B) no reduction in the royalties due hereunder has occurred pursuant to Section 7.4.1 in such country.

 

1.185.     “Value
Added Tax” or “VAT” shall mean any value added tax, ad valorem, goods and services or similar
tax chargeable on the supply or deemed supply of goods or services, sales and use taxes, transaction taxes, consumption taxes and
other similar taxes required by applicable Law including any interest, penalties or other additions to tax thereon, required under
applicable Law.

 

1.186.     “Year
5 Forecast” shall mean either or both of the Year 5 Forecast of Option Indication and the Year 5 Forecast of IBS-d.

 

1.187.     “Year
5 Forecast of Option Indication” shall have the meaning set forth in Section 2.7.2.

 

1.188.     “Year
5 Forecast of IBS-d” shall have the meaning set forth in Section 2.7.2.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	20

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

1.189.      “Withholding
Taxes” shall have the meaning set forth in Section 7.5.

 

1.190.      Interpretation.
Unless the context of this Agreement otherwise requires: (a) words of one gender include the other gender; (b) words using the
singular or plural number also include the plural or singular number, respectively; (c) the terms “hereof,” “herein,”
“hereby,” and other similar words refer to this entire Agreement; (d) the words “include”, “includes”,
and “including” when used in this Agreement shall be deemed to be followed by the words “without limitation”,
unless otherwise specified; (e) the terms “Article” and “Section” refer to the specified Article and Section
of this Agreement (unless clear from the context that it refers to an Article or Section of some other document); (f) references
to any “person” include individuals, sole proprietorships, partnerships, limited partnerships, limited liability partnerships,
corporations, limited liability companies, business trusts, joint stock companies, trusts, incorporated associations, joint ventures
or similar entities or organisations, and the successors and permitted assigns of that person, (g) “or” has the inclusive
meaning represented by the phrase “and/or”; (h) the words “will” and “shall” shall have the
same meaning; (i) The letter “M” used in connection with the USD figures in this Agreement denotes “million”
and the letter “B” used in connection with the USD figures in this Agreement denotes “billion”; and (j)
references to a Law include any amendment or modification to such Law and any rules or regulations issued thereunder, whether such
amendment or modification is made, or issuance of such rules or regulations occurs, before or, only with respect to events or developments
occurring or actions taken or conditions existing after the date of such amendment, modification or issuance, after the date of
this Agreement, but only to the extent such amendment or modification, to the extent it occurs after the date hereof, does not
have a retroactive effect. Whenever this Agreement refers to a number of days, unless otherwise specified, such number shall refer
to calendar days.

 

ARTICLE
2

LICENSE

 

2.1.        Licenses
Granted by Assembly.

 

2.1.1.     Subject
to the terms and conditions of this Agreement, as of the Effective Date, Assembly, on behalf of itself and its Affiliates, hereby
grants to Allergan, and Allergan hereby accepts, a non-transferable (except as provided in Section 13.1), sublicensable
(subject to Section 2.1.4), exclusive (including with regard to Assembly and its Affiliates), royalty-bearing, license under Assembly’s
right, title and interest in and to the Licensed Compound Patents and the Licensed Compound Know-How solely to Develop, have Developed,
use, Commercialize, have Commercialized, import into and export out of any country, have imported into and exported out of any
country and otherwise Exploit (except to make or have made) the Licensed Compounds and Licensed Products in the Field in the Territory.

 

2.1.2.     Subject
to the terms and conditions of this Agreement, as of the Effective Date, Assembly, on behalf of itself and its Affiliates, hereby
grants to Allergan, and Allergan hereby accepts, a non-transferable (except as provided in Section 13.1), exclusive (including
with regard to Assembly and its Affiliates), license and right of reference, with the right to grant further rights of reference
solely to a Sublicensee in connection with the grant of a sublicense granted in accordance with Section 2.1.4, in and to the Retained
Regulatory Documentation solely to Develop, have Developed, use, Commercialize, have Commercialized, import into and export out
of any country, have imported into and exported out of any country and otherwise Exploit (except to make or have made) the Licensed
Compounds and Licensed Products as permitted by Section 2.1.1.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	21

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

2.1.3.     Subject
to the terms and conditions of this Agreement, as of the Effective Date, Assembly, on behalf of itself and its Affiliates, hereby
grants to Allergan, and Allergan hereby accepts, a non-transferable (except as provided in Section 13.1), sublicensable (subject
to Section 2.1.4), worldwide, non-exclusive license under Assembly’s interest in and to the Licensed Compound Patents and
the Licensed Compound Know-How to make or have made the Licensed Compounds and Licensed Products solely to Develop, have
Developed, use, Commercialize, have Commercialized, import into and export out of any country, have imported into and exported
out of any country and otherwise Exploit the Licensed Compounds and Licensed Products in the Field in the Territory.

 

2.1.4.     Allergan
shall have the right to sublicense any of its rights under Section 2.1 to any Third Party (which sublicensed rights may be further
sublicensable through multiple tiers) without the prior consent of Assembly, subject to the requirements of this Section 2.1.4.
Each sublicense granted by Allergan pursuant to this Section 2.1.4 shall be subject and subordinate to the terms of this Agreement
and shall contain provisions consistent with those in this Agreement. Except with respect to standard commercial vendor agreements
that include a sublicense of any of Allergan’s rights under Sections 2.1.1 through 2.1.3, Allergan shall promptly provide
Assembly with a copy of the fully executed sublicense agreement covering any sublicense granted hereunder (which copy may be redacted
to remove provisions which are not necessary to monitor compliance with this Section 2.1.4). Each sublicense agreement shall contain
the following provisions: (i) a requirement that the Sublicensee comply with the confidentiality and non-use provisions of ARTICLE
8 with respect to Assembly’s Confidential Information and (ii) a requirement that the Sublicensee submit applicable sales
or other reports to Allergan to the extent necessary or relevant to the reports required to be made or records required to be maintained
under this Agreement. Notwithstanding any sublicense, Allergan shall remain primarily liable to Assembly for the performance of
all of Allergan’s obligations under, and Allergan’s compliance with all provisions of, this Agreement.

 

2.2.        Licenses
Granted by Allergan.

 

2.2.1.     Subject
to the terms and conditions of this Agreement, as of the Effective Date, Allergan, on behalf of itself and its Affiliates, hereby
grants to Assembly, and Assembly hereby accepts, a non-exclusive, royalty-free, sublicensable (solely to permitted subcontractors
under this Agreement) license and right of reference under Allergan’s right, title and interest in and to the Allergan Collaboration
IP and the Assigned Regulatory Documentation solely to carry out Assembly’s activities under the R&D Plan.

 

2.2.2.     Subject
to the terms and conditions of this Agreement, as of the Effective Date, Allergan, on behalf of itself and its Affiliates, hereby
grants to Assembly, and Assembly hereby accepts, a non-transferable (except as provided in Section 13.1), exclusive (including
with regard to Allergan and its Affiliates), license and right of reference, with the right to grant further rights of reference,
in and to the Assigned Regulatory Documentation solely to Develop, have Developed, use, Commercialize, have Commercialized, import
into and export out of any country, have imported into and exported out of any country and otherwise Exploit (except to make or
have made) products comprising Microbiome-Based Compounds, including Reversion Products, subject to the limitations imposed by
Section 2.4.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	22

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

2.2.3.     Notwithstanding
anything in this Agreement to the contrary, the licenses granted by Allergan pursuant to this Section 2.2 do not include any intellectual
property rights relating to compounds that are not Licensed Compounds.

 

2.3.        Additional
In-Licensed Intellectual Property.

 

2.3.1.     Assembly
will use Commercially Reasonable Efforts to ensure that it or its Affiliate Controls any Patent or Know-How to which it is granted
rights by a Third Party to the extent such Patent or Know-How would be deemed a Licensed Compound Patent or Licensed Compound Know-How,
as applicable, if Controlled by Assembly or its Affiliate at the time of such grant of rights.

 

2.3.2.     If
Assembly intends to secure rights pursuant to a license or similar agreement to any such Patent or Know-How, and the terms of the
initial draft of the definitive agreement exchanged between Assembly and such Third Party would, if Allergan accepted a sublicense
of such rights on such terms pursuant to Section 2.3.4, impose obligations or restrictions on Allergan in addition to Allergan’s
existing obligations and restrictions hereunder, then [* * *].

 

2.3.3.     Without
limiting any other obligation under this Section 2.3, Assembly shall promptly notify Allergan in the event (a) [* * *], (b) [*
* *] or (c) [* * *], which notice, in the case of clause (b) or (c) shall be provided prior to entering into any such license or
other agreement, and Assembly shall not enter into such license or other agreement prior to the Parties engaging in the discussions
described in the next sentence. In the event of clause (b) or (c) under this Section 2.3.3, (y) the Parties shall discuss in good
faith the underlying issues causing such inability on the part of Assembly and, [* * *] and (z) unless otherwise mutually agreed
by the Parties, Assembly shall only be permitted to obtain a non-exclusive license (or an exclusive license of a scope that will
not prevent Allergan from obtaining a license directly from such Third Party to exploit Licensed Compounds and Licensed Products
under this Agreement) to such relevant Patent or Know-How with respect to the Licensed Compounds and Licensed Products in the Field
in the Territory so that Allergan may, [* * *]. For the purposes of this Section 2.3.3 only, the Licensed Compounds and Licensed
Products under this Agreement at any given time will include solely Compound Candidates and Product Candidates included in or contemplated
by the then-current R&D Plan and then-current Licensed Compounds and Licensed Products and the Field shall be the then-current
Permitted Indications.

 

2.3.4.     Notwithstanding
anything to the contrary in this Agreement, in the event that Assembly enters into an agreement or arrangement under which Assembly
or its Affiliate is granted rights to any Patent or Know-How that would be a Licensed Compound Patent or Licensed Compound Know-How
hereunder, such Patent or Know-How is hereby deemed not to be a Licensed Compound Patent or Licensed Compound Know-How hereunder,
as applicable, unless and until (a) Assembly provides Allergan with a written notice of all obligations, limitations and conditions
to which Allergan would be subject pursuant to the terms of such agreement or arrangement if such Patent or Know-How were deemed,
as applicable, a Licensed Compound Patent or Licensed Compound Know-How hereunder and (b) Allergan, at any time after receipt of
such notice, provides written notice to Assembly that it agrees to such obligations, limitations and conditions (upon delivery
of such notice, such relevant agreement or arrangement shall be deemed an “In-License Agreement” hereunder). Assembly
shall be required to provide the notice described in clause (a) of this Section 2.3.4 within five (5) Business Days of its execution
of an agreement or arrangement under which Assembly or its Affiliate is granted rights to any Patent or Know-How that would be
a Licensed Compound Patent or Licensed Compound Know-How hereunder if accepted by Allergan. If Allergan does not provide the notice
described in clause (b) of this Section 2.3.4 or indicates in such written notice that it does not wish to obtain a sublicense
under the relevant Patent or Know-How, such Patent or Know-How is hereby deemed not to be a Licensed Compound Patent or Licensed
Compound Know-How hereunder. In no event shall Allergan be responsible or liable for any obligation, limitation or condition under
an agreement or arrangement under which Assembly or its Affiliate is granted rights to any Patent or Know-How unless Allergan has
expressly agreed to such obligation, limitation or condition pursuant to this Section 2.3.4.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	23

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

2.4.        Exclusivity.

 

2.4.1.     Except
as otherwise expressly provided herein (including as provided in Section 2.7.4 and under the R&D Plan), Assembly shall not,
and shall cause its Affiliates not to, either itself, or together with or through enabling (including through the grant of rights)
any Third Party, [* * *] in the Territory prior to [* * *] (such period, the “Exclusivity Term”); provided
that the restrictions in this Section 2.4.1 shall not apply during any time period during the Exclusivity Term that [* * *].

 

2.4.2.     Except
with respect to activities under this Agreement and as otherwise expressly provided herein, [* * *], Allergan shall not, and shall
cause its Affiliates not to, either itself, or together with or through enabling (including through the grant of rights) any Third
Party, [* * *] in the Territory prior to [* * *]; provided that the restrictions in this Section 2.4.2 shall not apply with
respect to [* * *].

 

2.4.3.     Except
as expressly provided in Section 2.7, Allergan shall not, and shall cause its Affiliates not to, either itself, or together with
or through enabling (including through the grant of rights) any Third Party, Exploit any Licensed Compound or Licensed Product
outside of the Permitted Indications; provided, that, Allergan shall not be in breach of this Section 2.4.3 merely as a
result of off-label use of a Licensed Product outside of a Permitted Indication for a Licensed Product that has only received Regulatory
Approvals for, and has only been promoted by Allergan or its Affiliates for, one or more Permitted Indications.

 

2.4.4.     Notwithstanding
anything to the contrary in this Agreement, the restrictions placed on a Party and its Affiliates in Sections 2.4.1 through 2.4.2,
respectively (the relevant restricted Party, the “Restricted Party”), will not apply to any product Developed
or Commercialized by any Third Party that becomes an Affiliate of the Restricted Party after the Effective Date (a) as a result
of [* * *] or (b) if such product (i) is sold or marketed by such Third Party or its licensee and such sales (whether by such Third
Party or a licensee of such Third Party) represents less than fifty percent (50%) of the worldwide sales of the acquired business
at the time such Third Party becomes an Affiliate of such Restricted Party by direct or indirect acquisition of such Third Party
by such Restricted Party or (ii) is not sold or marketed by such Third Party and represents less than fifty percent (50%) of the
enterprise value of the acquired business at the time such Third Party becomes an Affiliate of such Restricted Party by direct
or indirect acquisition of such Third Party by such Restricted Party, in each case solely (x) if a “firewall” of reasonable
safeguards is put in place by the Restricted Party between individuals with access to Licensed Compound Know-How or Licensed Compound
Patents (to the extent unpublished), on the one hand, and the personnel responsible for the Development or Commercialization of
such product, on the other hand and (y) if such Development or Commercialization (i) was initiated prior to such Third Party becoming
an Affiliate of such Restricted Party and without any access to Licensed Compound Know-How or Licensed Compound Patents (to the
extent unpublished), and (ii) continues without the use of any Licensed Compound Know-How (to the extent not in the public domain)
or Licensed Compound Patents after such Third Party becomes an Affiliate of the Restricted Party.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	24

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

2.4.5.     Notwithstanding
anything to the contrary in this Section 2.4, if a Third Party becomes an Affiliate of a Restricted Party by direct or indirect
acquisition of such Third Party by such Restricted Party and such Third Party is, at the time of such acquisition, Developing or
Commercializing a Microbiome-Based Compound for, with respect to such Party, a Restricted Indication, that (a) if sold or marketed,
represents fifty percent (50%) or more of the worldwide sales of the acquired Third Party at the time of such acquisition or (b)
if not sold or marketed, represents fifty percent (50%) or more of the enterprise value of the acquired Third Party at the time
of such acquisition, then, within six (6) months after the closing of such acquisition, such Restricted Party shall divest all
rights (other than the right to merely receive payments based on the Development or Commercialization of such Microbiome-Based
Compound) or cease to Develop and Commercialize such Microbiome-Based Compound for the duration of the relevant restriction on
such Restricted Party as set forth in Section 2.4.1 or 2.4.2, as applicable; provided that such Restricted Party shall ensure
that: (x) no personnel of such Restricted Party or its Affiliates that is involved in the Development, manufacture or Commercialization
of such Microbiome-Based Compound prior to such divestment or cessation obtains any rights or access to the Confidential Information
of the other Party until completion of such divestment or cessation; and (y) all of such Party’s or its Affiliates’
Development and Commercialization activities related to any such Microbiome-Based Compound prior to such divestment or cessation
are kept separate from the Development and Commercialization activities for the Licensed Compound and Licensed Products under this
Agreement.

 

2.5.        Retention
of Rights.

 

2.5.1.     Assembly
retains the right under the Licensed Compound Patents, the Licensed Compound Know-How and the Retained Regulatory Documentation
solely to perform its obligations as set forth in, and subject to, the R&D Plan. Except as expressly provided herein, Assembly
grants no other right or license, including any rights or licenses to the Licensed Compound Patents, the Licensed Compound Know-How
or any other Patent or intellectual property rights not otherwise expressly granted herein.

 

2.5.2.     Except
as expressly provided herein, Allergan grants no other right or license, including any rights or licenses to the Allergan Collaboration
IP, the Assigned Regulatory Documentation, Allergan’s interest in the Joint Patents and the Joint Know-How or any other Patent
or intellectual property rights not otherwise expressly granted herein.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	25

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

2.6.        Disclosure
of Know-How and Regulatory Documentation.

 

2.6.1.     Assembly
shall and shall cause its Affiliates to, without additional compensation, disclose and make available to Allergan, in electronic
or hardcopy form, as Allergan may reasonably request, copies of all physical embodiments of Regulatory Documentation, Licensed
Compound Know-How and Joint Know-How Controlled by Assembly or its Affiliates, including (a) all clinical and non-clinical data,
(b) summaries of such data, research, analyses and other information relating to the Licensed Compounds or the Licensed Products
(including the results achieved in the performance of the R&D Plan and the Development of a Compound Candidate, Product Candidate,
Licensed Compound or Licensed Product), and (c) any other information claimed or covered by any Licensed Compound Patent or Joint
Patent or otherwise relating to any Licensed Compound, any Licensed Product or the Exploitation of any Licensed Compound or Licensed
Product requested by Allergan, in each case (x) that is in existence as of the Effective Date, promptly after (but in any case
within thirty (30) calendar days following) the Effective Date and (y) that comes into existence after the Effective Date, promptly
after the earlier of the development, making, conception or reduction to practice of such Regulatory Documentation, Licensed Compound
Know-How or Joint Know-How.

 

2.6.2.     Assembly,
at its sole cost and expense, shall provide Allergan with all reasonable assistance required in order to transfer to Allergan the
Regulatory Documentation, Licensed Compound Know-How, Joint Know-How, and other information required to be produced pursuant to
Section 2.6.1 above, in each case, in a timely manner. Without limiting the foregoing, Assembly shall make available to Allergan,
those of Assembly’s representatives as Allergan may reasonably request for purposes of transferring the Regulatory Documentation,
Licensed Compound Know-How, Joint Know-How, or other information to Allergan or for purposes of Allergan acquiring expertise on
the practical application of such information or assisting on issues arising during such Exploitation, including through site visits
to Allergan’s facility as reasonably required or useful.

 

2.6.3.     In
connection with the foregoing disclosure obligation, Assembly will disclose to Allergan information relating to [* * *] by Assembly
for use [* * *] by Assembly hereunder for selection by Allergan as a Compound Candidate, including Assembly’s [* * *], but,
anything to the contrary in this Agreement notwithstanding, neither Assembly nor any of its Affiliates shall be required to disclose
or make available to Allergan or any Third Party any [* * *] a compound.

 

2.7.        Option
to Expand the Permitted Indications.

 

2.7.1.     Allergan
shall have the right, at Allergan’s sole discretion at any time during the Term, to expand the Permitted Indications (the
“Option Indication Right”) on an Option Indication-by-Option Indication basis by (i) providing written
notice (an “Option Notice”) to Assembly specifying an additional indication or indications (each, an
“Option Indication” and collectively, “Option Indications”) with respect to
which Allergan desires to exercise the Option Indication Right and the identity of the Licensed Compound or Compound Candidate
that Allergan initially intends to Develop for the relevant Option Indication(s) and (ii) paying the fee (the “Option
Exercise Fee”) and committing to pay the development milestones (“Option Indication Development Milestones”)
as described in Section 2.7.2. There shall be no limit to the number of times Allergan may exercise the Option Indication Right.
Within ten (10) Business Days of receipt of an Option Notice, Assembly shall notify Allergan (a) if a proposed Option Indication
is available, such Option Indication to only be deemed unavailable if [* * *] and (b) if such proposed Option Indication is available,
whether any Licensed Compound Know-How described in clause (a) of Section 1.107 or any Licensed Compound Patents described in clause
(b)(i) of Section 1.108 would not be Licensed Compound Know-How or Licensed Compound Patents with respect to such proposed Option
Indication, assuming solely for the purposes of this Section 2.7.1 that any Compound Candidate subject to the Option Notice is
a Licensed Compound. If Assembly does not provide notice to Allergan within such ten (10) Business Day period or otherwise notifies
Allergan that such Option Indication is available under this Agreement (provided that, unless Assembly notifies Allergan that such
Option Indication is not available, it shall provide to Allergan the information described in clause (b) of the preceding sentence),
such Option Indication shall become a Permitted Indication upon payment by Allergan of the Option Exercise Fee.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	26

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

2.7.2.     Option
Exercise Fee.

 

(a)     The
Option Exercise Fee shall be determined as follows:

 

Option Exercise
Fee = [* * *]

 

[* * *]

 

[* * *]

 

[* * *]

 

[* * *]

 

[*
* *]

 

The Option Exercise
Fee for any Option Indication shall not be any greater than $[* * *], regardless of its calculated amount. If the Option Exercise
Fee as calculated above results in an amount (a) that is less than $[* * *], then the Option Exercise Fee shall be adjusted to
be equal to $[* * *] and (b) that is greater than $[* * *], then the Option Exercise Fee shall be payable as follows: (i) $[* *
*] shall be payable at the time of exercise of the Option Indication Rights in accordance with this paragraph and (ii) the remainder
(up to $[* * *]) shall be [* * * ] payable for the relevant Option Indication. The Option Exercise Fee shall be payable within
[* * *] days after receipt by Allergan of an invoice therefor from Assembly, which invoice shall be delivered promptly following
the determination of the Option Exercise Fee in accordance with this Section 2.7.2; provided that, Allergan may revoke its
Option Notice within thirty (30) days after such determination is made and, in such case, the relevant Option Indication will not
be deemed a Permitted Indication hereunder, Allergan shall have no obligation to pay the relevant Option Exercise Fee and Allergan
shall maintain its Option Indication Right with respect to such Option Indication.

 

(b)     The
Option Indication Development Milestones shall become due and payable upon the achievement of the Development Milestones set forth
in Section 7.2.1 by the first Licensed Product in an Option Indication on and subject to the same terms as are applicable
to Licensed Products that are in Development for use to treat IBS; provided that the amount of such Development Milestones
(a) shall be determined by [* * *] and (b) with respect to the first two (2) Development Milestones owed, [* * *]; provided
further that, with respect to immediately foregoing clause (a), [* * *].

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	27

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

2.7.3.     In
the event the Parties are unable to agree on the calculation of a Year 5 Forecast under Section 2.7.2 within thirty (30) days of
delivery of an Option Notice, either Party may provide written notice to the other Party (an “Expert Resolution Notice”),
and such matter shall be resolved by a final, binding determination by an independent Third Party expert mutually acceptable to
the Parties (the “Expert”). Once the Expert has been selected, each Party shall, within ten (10) Business
Days following selection of the Expert, provide the Expert and the other Party with a written statement setting forth its proposed
calculation with respect to the applicable Year 5 Forecast with any such supporting documentation as such Party may determine to
provide. The Expert shall, no later than ten (10) Business Days (or such other period as the Parties may agree) after the submission
of the Parties’ written statements, determine the appropriate amount for the Year 5 Forecast for the purposes of Section
2.7.2; provided, that, the Expert may only choose one of the relevant Year 5 Forecast proposals submitted by the Parties
without modification as the relevant Year 5 Forecast. The decision of the Expert shall be the sole, exclusive and binding remedy
between the Parties with respect to any dispute with respect to the calculation of any Year 5 Forecast under Section 2.7. The costs
of the Expert shall be shared by the Parties.

 

2.7.4.     Notwithstanding
anything to the contrary set forth herein, Assembly shall not be prevented from directly or indirectly Developing or Commercializing
a Microbiome-Based Compound in any Option Indication.

 

ARTICLE
3

GOVERNANCE

 

3.1.        Establishment
of Joint Development Committee. Within thirty (30) days of the Effective Date, the Parties shall establish a Joint Development
Committee (the “Joint Development Committee” or “JDC”) consisting of an appropriate
number of representatives as may be agreed upon by the Parties, with an equal number of representatives designated by each Party.
The initial members of the JDC will be nominated by the Parties promptly following the Effective Date. Such representatives shall
be individuals suitable in seniority and experience and having delegated authority to make decisions of the JDC with respect to
matters within the scope of the JDC’s responsibilities. The JDC shall operate in accordance with the provisions of Sections
3.2 to 3.8, and shall have no authority to alter, amend or waive the terms and conditions of this Agreement, including any payment
conditions or terms, periods for performance, or obligations of the Parties. A Party may change one or more of its representatives
serving on the JDC at any time upon written notice to the other Party; provided that such replacement is of comparable authority
and scope of functional responsibility within that Party’s organization as the person he or she is replacing. At its meetings,
the JDC shall discuss the matters described below and such other matters as are reasonably requested by either Party’s Alliance
Manager. The JDC shall remain in effect until the Launch of all Licensed Products.

 

3.2.       Responsibilities
of JDC. Subject to the limitations set forth in Section 3.6, the JDC shall perform the following functions:

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	28

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

3.2.1.     
oversee and direct the conduct of the R&D Plan, including (a) selection, prioritization, and Optimization of Compound Candidates
and Product Candidates and (b) on a Licensed Compound-by-Licensed Compound basis, conduct of Clinical Trials with respect to any
Licensed Product containing a Licensed Compound until the Completion of the first POC Trial for a Licensed Product containing such
Licensed Compound;

 

3.2.2.     allocate
(and reallocate from time to time) activities between the Parties under the R&D Plan;

 

3.2.3.     review
and comment on any development plan produced by Allergan in respect of a Licensed Compound pursuant to Section 4.1.2;

 

3.2.4.     facilitate
communication between the Parties regarding all material activities performed by such Party under the R&D Plan, including preclinical
and clinical Development of Compound Candidates and Product Candidates, under or in connection with the R&D Plan;

 

3.2.5.     review,
and provide a forum for the Parties to discuss, any subcontractors through which Assembly intends to conduct any Development or
manufacturing activities hereunder, together with the subcontracts related thereto;

 

3.2.6.     provide
a forum for the Parties to discuss Allergan’s Development of any Licensed Compound or Licensed Product containing such Licensed
Compound; and

 

3.2.7.     perform
such other functions as are specifically designated for the JDC in this Agreement.

 

3.3.        Co-Chairs.
Each Party shall designate one of its representatives on the JDC to co-chair the meetings for the JDC (each, a “Co-Chair”).
The Co-Chairs shall, through and with the assistance of the Alliance Managers, coordinate and prepare the agenda for, and ensure
the orderly conduct of, the meetings of the JDC. The Co-Chairs shall, through and with the assistance of the Alliance Managers,
solicit agenda items from the JDC members and provide an agenda, along with appropriate information for such agenda, reasonably
in advance of any meeting. Such agenda shall include all items requested by either Co-Chair for inclusion therein. In the event
the Co-Chairs or another JDC member from either Party is unable to attend or participate in a meeting of the JDC, the Party whose
Co-Chair or member is unable to attend may designate a substitute co-chair or other representative for the meeting.

 

3.4.        Meetings.
The JDC shall meet at least quarterly, or more or less frequently if determined by the JDC, during the R&D Term and JDC meetings
can be called at other times by agreement between the Parties for any reason. JDC meetings may be conducted by telephone, videoconference
or in person. Any in-person JDC meetings shall be held on an alternating basis between Assembly’s and Allergan’s facilities,
unless otherwise agreed by the Parties. Each Party shall be responsible for the cost of such Party’s own personnel and for
its own expenses in attending such meetings and carrying out the other activities contemplated under this ARTICLE 3. As appropriate,
the JDC may invite a reasonable number of non-voting employees, consultants and scientific advisors to attend its meetings as non-voting
observers; provided, that such invitees are bound by confidentiality obligations at least as stringent as the provisions
set forth herein. Each Party may also call for special meetings of the JDC to discuss particular matters requested by such Party.
The Alliance Managers shall provide the members of the JDC with no less than ten (10) Business Days’ notice of each regularly
scheduled meeting and, to the extent reasonably practicable under the circumstances, no less than five (5) Business Days’
notice of any special meetings called by either Party.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	29

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

3.5.     Minutes.
Minutes will be kept of all JDC meetings by one of the Co-Chairs of the JDC (or his or her designees) on a rotating basis and sent
to all members of the JDC by e-mail for review and approval within thirty (30) days after each such meeting. The JDC shall formally
accept the minutes of the previous meeting at or before the next meeting of the JDC. Minutes will be deemed approved unless any
member of the JDC objects to the accuracy of such minutes by providing written notice to the other members of the JDC prior to
the next meeting of the JDC. Minutes shall list action items and shall designate any issues that need to be resolved by the JDC
or applicable resolution process. In the event of any objection to the minutes that is not resolved by mutual agreement of the
Parties, such minutes will be amended to reflect such unresolved dispute.

 

3.6.     Decision
Making within JDC.

 

3.6.1.     During
the R&D Term, decisions of the JDC pursuant to Sections 3.2.1 to 3.2.2 shall be made by unanimous vote, with each Party
having one (1) vote. In order to make any decision, the JDC must have present (in person or via telephone or videoconference) and
voting at least one (1) representative of each Party.

 

3.6.2.     On
a Licensed Compound-by-Licensed Compound basis, following the end of the Compound R&D Term for such Licensed Compound, (a)
the JDC shall cease to have any decision-making authority with respect to such Licensed Compound and any Licensed Product incorporating
such Licensed Compound, (b) Allergan shall make all decisions, including Development decisions, regarding such Licensed Compound
and any Licensed Products incorporating such Licensed Compound and (c) the JDC shall serve solely as a forum for the Parties to
discuss Allergan’s Development with respect to such Licensed Compound and any Licensed Products incorporating such Licensed
Compound.

 

3.6.3.     
In the event there is a [* * *] during the R&D Term, immediately upon [* * *], the JDC shall thereafter serve solely as
a forum for the Parties to discuss, on a Compound Candidate-by-Compound Candidate basis, the Development of a Compound Candidate
prior to such Compound Candidate becoming a “Licensed Compound” hereunder, and Allergan shall have the right to make
all decisions previously subject to Assembly’s final decision making authority under Section 3.7 with respect to the
Development of each of the Compound Candidates following completion of [* * *] activities with respect thereto.

 

3.7.     Committee
Deadlocks. Subject to the limitations set forth in Section 3.6 and the terms of this Agreement, if during the R&D Term,
the JDC cannot resolve a matter described in Section 3.6.1 within thirty (30) days, or such shorter time as may be determined
by the Parties, after it begins discussing any such delegated matter (a “Committee Deadlock”), then the JDC
shall escalate such Committee Deadlock to the Senior Officers for resolution by consensus. If following consideration by the Senior
Officers for a period of up to ten (10) Business Days there is still no consensus, then, [* * *].

 

3.8.     Joint
Patent Committee.

 

3.8.1.      Formation;
Composition. Within thirty (30) days of the Effective Date, the Parties will establish a joint patent committee (the “Joint
Patent Committee”) comprised of an equal number of representatives from each Party (or appointed representatives
of an Affiliate of such Party) with sufficient seniority within the applicable Party to make decisions arising within the scope
of the Joint Patent Committee’s responsibilities.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	30

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

3.8.2.      Specific
Responsibilities. The Joint Patent Committee will:

 

(a)     provide
a forum for discussing the preparation, filing, prosecution, and maintenance of Product Only Patents, Product Related Patents,
and other Licensed Compound Patents, as set forth in Sections 9.1.1 to 9.1.3;

 

(b)     comply
with the procedures set forth in Section 9.1.6(c); and

 

(c)     perform
such other functions regarding Patents included in the Licensed Compound Patents as appropriate, to further the purposes of this
Agreement, in each case as agreed in writing by the Parties.

 

3.8.3.      Meetings.
The Joint Patent Committee shall meet at least one (1) time per Calendar Year, or more or less frequently if determined by the
Joint Patent Committee.

 

3.9.        Alliance
Managers.

 

Each Party shall designate an individual
to serve as the main point of contact for such Party to exchange information, facilitate communication and coordinate the Parties’
activities under this Agreement (each, an “Alliance Manager”). The Alliance Managers shall attend meetings
(or designate an appropriate representative to attend meetings on the Alliance Manager’s behalf) between the Parties, including
JDC meetings. Each Party may change its designated Alliance Manager from time to time upon written notice to the other Party.

 

ARTICLE
4

R&D PLAN, DEVELOPMENT AND DILIGENCE REQUIREMENTS

 

4.1.        R&D
Plan.

 

4.1.1.      General.
As at the Execution Date, the Parties have agreed to a preliminary version of the R&D Plan attached as Schedule 1.153.
Assembly will prepare, and the Parties will review and mutually agree to, a final R&D Plan within forty-five (45) days after
the Effective Date.  The R&D Plan, among other things as further specified in this Section 4.1, will specify the
scientific direction and activities of, and allocate responsibilities and resources between, the Parties in a manner consistent
with this Agreement. The R&D Plan will be updated from time-to-time during the Term to ensure that it reflects the then-current
scope of activities planned by the Parties, with more detail being provided for activities that are to be conducted in the near-term
and that are less contingent on the achievement of anticipated results of Development. The R&D Plan will include the information
referenced in the outline attached to the R&D Plan attached as Schedule 1.153, and will include information relevant
to the following topics and events, as and when such information is determinable:

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	31

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(a)     
activities conducted in connection with the Optimization (including the goals of and strain selection methodology and gene sequence
analysis protocols used to select and validate Initial Candidate Compounds in such Optimization) of each Initial Compound Candidate
for its proposed Permitted Indication and the conduct of a POC Trial for the Licensed Product containing the Initial Compound resulting
from such Optimization activities for such Permitted Indication and delivery to Allergan of top-line results for such POC Trial;

 

(b)     the
delivery of, and timing of such delivery of, potential New Compound Candidates by Assembly to Allergan as further described in
Section 4.4, the Optimization (including the goals of and strain selection methodology and gene sequence analysis protocols used
to select and validate New Candidate Compounds in such Optimization) of each New Compound Candidate for its proposed Permitted
Indication and the conduct of a POC Trial for the Licensed Product containing the New Compound resulting from such Optimization
activities for such Permitted Indication and delivery to Allergan of top-line results for such POC Trial;

 

(c)     the
delivery of potential Backup Compound Candidates by Assembly to Allergan following Allergan’s request as described in Section
4.5, the Optimization (including the goals of and strain selection methodology and gene sequence analysis protocols used to select
and validate Backup Candidate Compounds in such Optimization) of each Backup Compound Candidate for its proposed Permitted Indication
and the conduct of a POC Trial for the Licensed Product containing the Backup Compound resulting from such Optimization activities
for such Permitted Indication and delivery to Allergan of top-line results for such POC Trial.

 

In the event that
Allergan desires to Develop a Compound Candidate or Licensed Compound for a Permitted Indication other than an Initial Indication,
the R&D Plan shall also contain a R&D Budget (New Indications) as further described in Section 4.8.3 for the Development
activities required to conduct such Development until completion of all activities related to the first POC Trial of a Licensed
Product incorporating such Licensed Compound, including Completion of such POC Trial and completion of the final clinical study
report for such POC Trial for a Licensed Product incorporating such Licensed Compound. The terms of, and activities set forth in,
the R&D Plan shall at all times be designed to be in compliance with all applicable Laws and to be conducted in accordance
with professional and ethical standards customary in the pharmaceutical industry, and, where applicable, each Party’s respective
health care compliance policies and applicable standard operating procedures.

 

4.1.2.     Responsibilities.
Each Party shall only be obliged to perform activities under the R&D Plan if, and solely to the extent, expressly set forth
and allocated to such Party in the R&D Plan or this Agreement. On a Permitted Indication-by-Permitted Indication basis, neither
Party will undertake any material, ongoing Development activities in connection with any Compound Candidate or Licensed Compound
prior to the Completion of the first POC Trial for such Licensed Compound, in such Permitted Indication, that are not provided
for or consistent with the then-current R&D Plan. The JDC shall be responsible for reviewing and making recommendations in
respect of any updates or amendments to the R&D Plan. Any amendments or modifications to the R&D Plan shall require the
mutual agreement of the Parties. For the sake of clarity, from and after the Completion of a POC Trial for a Licensed Product,
the R&D Plan shall not apply to, or govern in any way, Allergan’s Development efforts for such Licensed Product or the
Licensed Compound incorporated into such Licensed Product. Following the Completion of a POC Trial for a Licensed Product, Allergan’s
Development efforts, if any, in respect of such Licensed Product or the Licensed Compound incorporated in such Licensed Product
for any Permitted Indication shall be set forth in a high-level development plan and biannual updates thereto produced by Allergan
and presented to the JDC solely for review and comment.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	32

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

4.2.        Compound
R&D Term. On a Licensed Compound-by-Licensed Compound and Permitted Indication-by-Permitted Indication basis, the
period starting on the Effective Date and ending on the earliest of (a) the Completion of the first POC Trial for a Licensed Product
incorporating such Licensed Compound for such Permitted Indication, or earlier termination, of the Development activities for such
Licensed Compound under the R&D Plan for such Permitted Indication pursuant to this Agreement and (b) early termination of
this Agreement in accordance with ARTICLE 10 shall be the “Compound R&D Term” for such Licensed Compound
for such Permitted Indication. For clarity, any Development activities conducted under the R&D Plan with respect to a Compound
Candidate or Product Candidate shall be deemed to have occurred during the Compound R&D Term for the resultant Licensed Compound
stemming from such Development.

 

4.3.        Development
Efforts During the R&D Term.

 

4.3.1.     During
the R&D Term, each Party shall devote the FTEs as designated pursuant to the R&D Plan, which FTEs shall be appropriately
qualified research and development personnel possessing at least the level of skill and experience that such Party’s personnel
engaged in discovery, research and other Development activities for such Party’s other programs possess. [* * *]. Each Party
will conduct its activities under the R&D Plan in accordance with good scientific standards and practices and in compliance
in all material respects with the requirements of GLP, GCP and all applicable Laws, including those regarding environmental, safety
and industrial hygiene, quality assurance and quality control (including data integrity), standards for pharmacovigilance practice,
and all requirements relating to the protection of human subjects. Each Party shall maintain laboratories, offices and all other
facilities reasonably necessary to carry out the activities to be performed by it pursuant to the R&D Plan. In conformity with
standard pharmaceutical and biotechnology industry practices and the terms and conditions of this Agreement, each Party shall prepare
and maintain, or shall cause to be prepared and maintained, complete and accurate laboratory notebooks and other written records,
accounts, notes, reports and data with respect to activities conducted pursuant to the R&D Plan and, upon such other Party’s
written request and at its expense, will send legible copies of relevant portions of the aforesaid to such Party in such form(s)
as such Party may reasonably request.

 

4.3.2.     When
conducting Development under the R&D Plan to identify proposed Compound Candidates for a particular Permitted Indication, for
clarity, in addition to any other potential compounds that Assembly may identify under the R&D Plan, Assembly will provide
to Allergan, as proposed Compound Candidates, [* * *] that Assembly or its Affiliates have found to demonstrate, in the aggregate,
characteristics that [* * *] most likely to have a favorable safety and efficacy profile for the treatment or maintenance of remission
of such Permitted Indication. After selection of a proposed Compound Candidate, Assembly shall work to Optimize such Compound Candidates
in accordance with the R&D Plan.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	33

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

4.3.3.     During
the applicable Compound R&D Term, subject to Allergan’s final decision-making authority set forth in Section 3.6 if applicable,
Assembly shall be responsible for [* * *] and preclinical research of such Compound Candidate and Development of such Compound
Candidate and resultant Licensed Compound through the completion of all activities related to the first POC Trial of a Licensed
Product incorporating such Licensed Compound, including Completion of such POC Trial and completion of the final clinical study
report for such POC Trial for such Licensed Product; provided that, notwithstanding anything to the contrary in this Agreement,
an IND for a Product Candidate in a Permitted Indication may only be filed with a Regulatory Authority with the mutual consent
of the Parties, such consent to be given or withheld in good faith.

 

4.4.       Development
of New Compounds.

 

4.4.1.     Assembly
shall use Commercially Reasonable Efforts to provide proposed New Compound Candidate(s) for selection by Allergan, including summaries
of data, research, analyses, rationale for such selection and any other information relating to such proposed New Compound Candidate(s)
required by the R&D Plan.

 

4.4.2.     Allergan
shall have the right to select, in its sole discretion, up to two (2) candidates as New Compound Candidates for Optimization, one
for the Initial Indication of irritable bowel syndrome with constipation (IBS-c) or mixed irritable bowel syndrome (IBS-m) and
one for the Initial Indication of irritable bowel syndrome with diarrhea (IBS-d) or mixed irritable bowel syndrome (IBS-m) and,
upon such selection, each such candidate will be deemed a New Compound Candidate hereunder. If Allergan, in its sole discretion,
does not select two (2) candidates proposed by Assembly as New Compound Candidates for an Initial Indication, Assembly shall use
Commercially Reasonable Efforts to provide other candidates for such New Compound for such Initial Indication reasonably thereafter.
For clarity, the Development Costs incurred by Assembly in providing additional candidates to Allergan shall be included within
and subject to the limitation on total Development Costs to be incurred by Assembly as set forth in Section 4.8.2(a). In the event
Allergan does select a candidate to be a New Compound Candidate, Assembly shall submit to the JDC (which shall be re-established
if disbanded pursuant to this Agreement at the time of such candidate selection), for approval by mutual agreement of the Parties,
a proposed amendment to the R&D Plan providing for the activities for the Development (including Optimization) of such New
Compound Candidate and resultant New Compound (and products incorporating each of such) for the applicable Initial Indication through
the Completion of the first POC Trial for a Licensed Product incorporating such New Compound.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	34

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

4.5.       Development
of Backup Compounds; [* * *].

 

4.5.1.     
Subject to the terms of this Section 4.5, Allergan shall have the right, upon written notice to Assembly, to request that Assembly
provide potential Backup Compound Candidate(s) (such Backup Compound Candidate(s) to be backups to the Initial Compounds or New
Compounds initially for the same Permitted Indications as the such Initial Compound or New Compound but subject to Development
for additional indications thereafter as provided in Section 4.8.3) for evaluation and possible selection by Allergan, such written
request to include selection criteria for such potential Backup Compound Candidate(s). Upon receipt of Allergan’s written
request, Assembly shall use Commercially Reasonable Efforts to identify potential Backup Compound Candidate(s) in accordance with
the selection criteria provided by Allergan in such written request; provided that unless otherwise agreed by Allergan,
Assembly shall not propose any potential Backup Compound Candidate that has [* * *] (without regard to [* * *]) as a Compound Candidate.
Allergan shall provide the written request contemplated by this Section 4.5.1 in sufficient reasonable time for Assembly to provide
potential Backup Compound Candidate(s) for evaluation by Allergan no later than the conclusion of the Phase III Clinical Trial
for the Licensed Product incorporating the Licensed Compound for which such potential Backup Compound Candidate(s) are intended
to be backup(s). Assembly shall provide Allergan with access to such data, research, analyses, rationale for selection and any
other information relating to such potential Backup Compound Candidate(s) as is requested by Allergan and that is possessed and
controlled by Assembly, as soon as practicable following the date of Allergan’s written request.

 

4.5.2.     Allergan
shall have the right to select, in its sole discretion, up to a total of [* * *] Backup Compound Candidates as backups to the Initial
Compounds and New Compounds for Development for Permitted Indications from the compound candidates provided by Assembly pursuant
to Section 4.5.1, and, upon such selection, such candidates will be deemed Backup Compound Candidates hereunder. In the event Allergan
does select a candidate to be a Backup Compound Candidate, it may submit to the JDC (which shall be re-established if disbanded
at the time of such candidate selection), for approval by mutual agreement of the Parties, a proposed amendment to the R&D
Plan providing for the activities for the Optimization and Development of such Backup Compound Candidate and resultant Backup Compound
through the Completion of the first POC Trial for a Licensed Product incorporating such Backup Compound, such proposed amendment
to be the R&D Plan once such amendment is mutually agreed upon by the Parties. If Allergan, in its sole discretion, does not
select [* * *] proposed candidates as Backup Compound Candidates, Assembly shall, at Allergan’s request, use Commercially
Reasonable Efforts to provide other proposed Backup Compound Candidate(s) pursuant to the procedure set forth in Section 4.5.1.

 

4.5.3.     For
the sake of clarity, (i) the composition of Backup Compounds shall not be limited to [* * *] as the relevant Licensed Compound
to which it is a backup, and (ii) subject to the terms of this Agreement, [* * *] included in a Licensed Compound may be used by
Assembly in its development of compounds for itself or Third Parties.

 

4.6.       Development
Efforts Following the End of the Compound R&D Term. Following the end of a Compound R&D Term with respect to
any Licensed Compound being Developed for any Permitted Indication in the Field, subject to Assembly’s performance of its
obligations set forth in Section 6.4, Allergan shall be responsible for all Development and Commercialization activities regarding
such Licensed Compound and any Licensed Products incorporating such Licensed Compound; provided, that, if Assembly has,
at the time of the Completion of the first POC Trial for a Licensed Product incorporating such Licensed Compound, established an
Affiliate in China with sufficient capabilities to manage Development of such Licensed Product in China, as determined by Allergan
in its reasonable discretion, then Assembly shall conduct Development of such Licensed Product in China through such Affiliate
under Allergan’s oversight and direction, and Allergan shall reimburse Assembly for all Development Costs reasonably incurred
by Assembly in connection with such activities, pursuant to the processes set forth in Section 4.9.2.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	35

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

4.7.       Diligence
Obligations.

 

4.7.1.     Each
Party shall use Commercially Reasonable Efforts to perform its obligations under the R&D Plan with respect to the Development
of each Licensed Compound and each Licensed Product.

 

4.7.2.     On
an Initial Indication-by-Initial Indication basis, from and after [* * *] of a Licensed Product for an Initial Indication, Allergan
shall use Commercially Reasonable Efforts to (a) Develop and seek Regulatory Approval of such Licensed Product for such Initial
Indication in [* * *] and (b) Commercialize such Licensed Product in each of [* * *] following receipt of Regulatory Approval (including,
for clarity, in [* * *], pricing approval) in such country in such Initial Indication.

 

4.8.       Development
Costs.

 

4.8.1.     General.
In incurring Development Costs under this Agreement while conducting activities under the R&D Plan, Assembly will incur Development
Costs that are reasonable for the activity conducted and will work in good faith to avoid or minimize any Development Cost overages
to the R&D Budget.

 

4.8.2.     Initial
Indications.

 

(a)     Subject
to the terms of this Agreement, Allergan and Assembly shall be jointly responsible for all Development Costs incurred in the conduct
of activities under the R&D Plan for Development of a Licensed Compound (other than a Backup Compound) and a Licensed Product
incorporating such Licensed Compound for an Initial Indication. On a Licensed Compound-by-Licensed Compound basis, Allergan shall
be obligated to fund up to Fifty Million USD ($50M) and Assembly shall be obligated to fund up to Twenty Five Million USD ($25M)
of such Development Costs through the completion of all activities related to the first POC Trial of a Licensed Product incorporating
such Licensed Compound for the Initial Indications, including Completion of such POC Trial and completion of the final clinical
study report for such POC Trial (the “Initial Indication Development Costs”). The Parties shall fund
up to such aggregate of Seventy-Five Million USD ($75M) of Initial Indication Development Costs on a pro-rata basis in the manner
of two-thirds (2/3) borne by Allergan and one-third (1/3) borne by Assembly.

 

(b)     To
the extent the Initial Indication Development Costs exceed Seventy Five Million USD ($75M), Assembly may elect, prior to the first
day of the Calendar Quarter in which the Initial Indication Development Costs are expected to exceed Seventy Five Million USD ($75M),
to either (a) continue to bear one-third (1/3) of any such Development Costs or (b) cease to bear any additional Initial Indication
Development Costs in excess of its $25M share. If Assembly elects, pursuant to this Section 4.8.2(b), to cease bearing its portion
of the Initial Indication Development Costs, Allergan shall be entitled to deduct from any Development Milestone Payments payable
to Assembly as set forth in Section 7.4.5(a) one-third (1/3) of the Initial Indication Development Costs actually paid by Allergan
in excess of the first Seventy-Five Million USD ($75M) of Initial Indication Development Costs incurred by the Parties pursuant
to Section 4.8.2(a) plus a premium of 25% ([* * *]).

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	36

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(c)     Anything
herein to the contrary notwithstanding, (i) on a Licensed Compound-by-Licensed Compound basis, Allergan shall be solely responsible
for all Development Costs incurred pursuant to this Agreement in connection with the Development of a Licensed Compound and Licensed
Products incorporating such Licensed Compound from and after the completion of the final clinical study report for such POC Trial
for such Licensed Product, including Completion of such POC Trial and completion of the final clinical study report for such POC
Trial and (ii) all Development Costs incurred in respect of the Development of a Backup Compound pursuant to this Agreement
shall be borne solely by Allergan.

 

4.8.3.     Other
Indications.

 

(a)     In
the event that Allergan desires to Develop a Licensed Compound for a Permitted Indication other than an Initial Indication, Allergan
shall so notify Assembly. Assembly shall prepare and provide to Allergan a proposed amendment to the R&D Plan describing the
activities for such Development, containing a proposed R&D Budget (New Indications) for such activities. Such proposed amendment
to the R&D Plan and proposed R&D Budget (New Indications) shall be given effect once mutually agreed upon by the Parties.
Allergan shall be solely responsible for all Development Costs incurred pursuant to this Section 4.8.3(a) for such Development;
provided that, at its option, Assembly may elect to bear one-third (1/3) of such Development Costs for Development of a
Licensed Compound and Licensed Products incorporating such Licensed Compound in a Permitted Indication other than an Initial Indication
by giving written notice to Allergan within ten (10) Business Days after approval by the Parties of the relevant proposed amendment
to the R&D Plan. Upon Assembly’s delivery of such written notice to participate in the payment of such Development Costs,
it shall be obligated to do so under the terms of this Agreement.

 

(b)     If
Assembly does not elect to bear one-third (1/3) of any such Development Costs pursuant to Section 4.8.3(a), then (i) Allergan shall
be entitled to deduct from any Development Milestone Payments payable to Assembly in respect of a Licensed Product that incorporates
such Licensed Compound for such Permitted Indication an amount equal to one-third (1/3) of the Development Costs actually incurred
by Allergan for Development activities for such Licensed Compound and Licensed Product incorporating such Licensed Compound, in
each case for such Permitted Indication plus a premium of 25% ([* * *]).

 

4.9.       Invoicing;
Payment of Development Costs.

 

4.9.1.     With
respect to Development Costs incurred in connection with Development activities for which the Parties are sharing Development Costs
in accordance with this Agreement, within ten (10) days following the last day of each Calendar Quarter during the R&D Term,
each Party shall provide the other Party with a report of all Development Costs that were incurred by such Party performing activities
under the R&D Plan in the prior Calendar Quarter and reasonable supporting documentation with respect thereto. Based on such
reports, the Parties shall determine which Party has incurred more than its allocable share of the aggregate Development Costs
incurred by both Parties during such Calendar Quarter as set forth in this Agreement, and the Party that has incurred more than
its allocable share of such Development Costs shall provide to the other Party an invoice for such excess amount of Development
Costs incurred by such Party for such Calendar Quarter within thirty (30) days of the receipt by both Parties of the reports of
Development Costs pursuant to this Section 4.9.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	37

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

4.9.2.     With
respect to Development Costs incurred by Assembly in connection with Development activities for which Allergan is solely responsible
for Development Costs in accordance with this Agreement, Assembly shall provide Allergan an invoice for the amount of Development
Costs incurred by Assembly in connection with such activities and reasonable supporting documentation with respect thereto within
forty-five (45) days of the end of each Calendar Quarter.

 

4.9.3.     Each
Party shall pay the undisputed amount of invoices provided pursuant to this Section 4.9 within forty-five (45) days of receipt
of such invoice and supporting documentation, as applicable. If a Party disputes in good faith any charge contained in an invoice,
it will pay any undisputed amounts in accordance with the preceding sentence and provide written notice of the nature of the dispute
to the other Party, and the disputed amount will be addressed under the dispute resolution provisions of Section 13.4.

 

4.10.       Subcontracts.
Either Party may perform appropriate Development activities under the R&D Plan pursuant to this Agreement through one or more
Third Party subcontractors; provided, that such Party engages each such Third Party subcontractor through a written agreement
consistent with the terms and conditions of this Agreement, and further provided, that, such Party shall provide prior written
notice to the other Party of such Party’s intent to engage such subcontractor, such notice to include the relevant contact
information of the subcontractor and a description of the work to be performed by such subcontractor. Notwithstanding anything
to the contrary in this Agreement, a Party may only engage a Third Party subcontractor to perform Development activities under
the R&D Plan if: (a) no rights of either Party under this Agreement would be diminished or otherwise adversely affected as
a result of such subcontracting, (b) the subcontractor undertakes the obligations of confidentiality and non-use regarding Confidential
Information that are substantially the same as those undertaken by the Parties pursuant to ARTICLE 8 hereof, and (c) the subcontractor
agrees that any intellectual property developed in the course of the work hereunder shall be assigned to the Party engaging the
subcontractor or such Party’s designee, so as to permit licensing or re-assignment as required by the terms and conditions
of this Agreement. The Party engaging any such Third Party subcontractor shall be responsible for all inventive contributions of
the subcontractor’s employees or agents with respect to any intellectual property. Subcontracting shall not relieve either
Party of its obligations or liability under this Agreement.

 

4.11.       Materials.
Each Party will, during the R&D Term, as a matter of course as described in the R&D Plan or on the other Party’s
reasonable written request, furnish to the other Party samples of Materials that it Controls and that are necessary for the other
Party to carry out its responsibilities under the R&D Plan. Each Party will use such Materials only in accordance with the
R&D Plan and otherwise in accordance with the terms and conditions of this Agreement. Except with the prior written consent
of the supplying Party, the Party receiving any Materials will not distribute or otherwise allow the release of Materials to any
Third Party, except for subcontracting (subject to the provisions of Section 4.10) or sublicensing as permitted hereunder. All
Materials will remain the sole property of the supplying Party, will be used in compliance with all applicable Laws, and will be
used with prudence and appropriate caution in any experimental work because not all of their characteristics may be known.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	38

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

4.12.       Reports.
Each Party shall promptly provide the other Party with written reports of all Know-How, results, discoveries, inventions and technical
developments made or generated in the course of performing activities under or in connection with the R&D Plan with respect
to a Licensed Compound or Licensed Product by such reporting Party. Without limitation to the foregoing, during the R&D Term,
each Party shall prepare and provide to the other Party (a) a written report every Calendar Quarter that (i) details the Development
activities performed by the reporting Party, including all results achieved, (ii) sets forth the expected activities to be undertaken
by the reporting Party during the next Calendar Quarter and the prioritization thereof, and (iii) identifies any issues or circumstances
of which the reporting Party is aware that may prevent or adversely affect in a material manner its future performance of activities
assigned to it under the R&D Plan and (b) such other reports or updates as may be required under the R&D Plan. The Parties
may agree, on a case by case basis, that minutes or presentations from JDC meetings may be used to satisfy certain of the foregoing
reporting requirements.

 

ARTICLE
5

Co-Promotion

 

5.1.       Co-Promotion
in the USA.

 

5.1.1.     Assembly
shall have the right, subject and pursuant to the terms set forth in this Agreement, to co-promote one or more Licensed Products
in the USA (the “USA Co-Promotion Option Right”). The USA Co-Promotion Option Right shall be exercisable
by Assembly on a Licensed Product-by-Licensed Product basis.

 

5.1.2.     Assembly
may exercise its USA Co-Promotion Option Right with respect to a Licensed Product by providing [* * *] prior written notice to
Allergan; provided, that Assembly may only exercise the USA Co-Promotion Option Right following the commencement of the
respective Calendar Years specified below, provided the related criteria have been achieved: (i) the third Calendar Year
following Launch in the USA of the applicable Licensed Product, if annualized Net Sales of such Licensed Product in the USA in
the second Calendar Year following Launch of such Licensed Product are at least [* * *] USD ($[* * *]) and trending upwards such
that annualized Net Sales of [* * *] USD ($[* * *]) may reasonably be expected by the end of the fourth Calendar Year following
Launch of such Licensed Product; (ii) the fourth Calendar Year following Launch of the applicable Licensed Product, if annualized
Net Sales of such Licensed Product in the USA in the third Calendar Year following Launch of such Licensed Product are at least
[* * *] USD ($[* * *]) and trending upwards such that annualized Net Sales of [* * *] USD ($[* * *]) may reasonably be expected
by the end of the fourth Calendar Year following Launch of such Licensed Product; or (iii) the fifth Calendar Year following Launch
of the applicable Licensed Product, if annualized Net Sales of such Licensed Product in the USA in the fourth Calendar Year following
Launch of such Licensed Product are at least [* * *] USD ($[* * *]).

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	39

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

5.1.3.     On
a Licensed Product-by-Licensed Product basis and subject to Section 5.4, following exercise by Assembly of the USA Co-Promotion
Option Right with respect to a Licensed Product, Assembly shall have the right to co-promote such Licensed Product in the USA in
accordance with this Agreement until (A) Assembly terminates its co-promotion right with respect to such Licensed Product by providing
[* * *] months’ prior written notice to Allergan, which notice may be given at any time after Assembly has been co-promoting
such Licensed Product in the USA for at least [* * *] months; or (B) Allergan terminates Assembly’s co-promotion right with
respect to such Licensed Product upon [* * *] written notice to Assembly if (I) Assembly fails to provide at least [* * *] ([*
* *]%) of its share of the detailing efforts (i.e. [* * *]% of the total detailing efforts) in the US in the manner described in
Section 5.4 and the Co-Promotion Agreement in [* * *] or (II) [* * *]. A failure of Assembly to provide its share of the detailing
efforts in the United States shall not, for purposes of Section 10.3, constitute a material breach of this Agreement by Assembly.

 

5.2.       Co-Promotion
in China.

 

5.2.1.     Assembly
shall have the right, subject and pursuant to the terms set forth in this Agreement, to co-promote one or more Licensed Products
in China (the “China Co-Promotion Option Right,” together with the USA Co-Promotion Option Right, the
“Co-Promotion Option Rights”). The China Co-Promotion Option Right shall be exercisable by Assembly on
a Licensed Product-by-Licensed Product basis.

 

5.2.2.     Assembly
may exercise its China Co-Promotion Option Right by providing [* * *] prior written notice to Allergan prior to the anticipated
Launch of the applicable Licensed Product in China, which date Allergan shall communicate to Assembly no later than [* * *] prior
to such Launch date.

 

5.2.3.     On
a Licensed Product-by-Licensed Product basis and subject to Section 5.4, following exercise of the China Co-Promotion Option with
respect to a Licensed Product, Assembly shall have the right to co-promote such Licensed Product in China in accordance with this
Agreement until (A) Assembly terminates such right by providing [* * *] prior written notice to Allergan, which notice may be given
at any time after Assembly has been co-promoting such Licensed Product in China for at least [* * *]; or (B) Allergan terminates
Assembly’s co-promotion right with respect to such Licensed Product upon [* * *] written notice to Assembly if (I) Assembly
fails to conduct its detailing efforts as set forth in Section 5.4 and the Co-Promotion Agreement in [* * *] or (II) [* * *]. A
failure of Assembly to provide its share of the detailing efforts in China shall not, for purposes of Section 10.3, constitute
a material breach of this Agreement by Assembly.

 

5.3.       Joint
Co-Promotion Committee. Following Assembly’s exercise of the USA Co-Promotion Option Right or the China Co-Promotion
Option Right with respect to any Licensed Product, the Parties shall establish a Joint Co-Promotion Committee (the “Joint
Co-Promotion Committee” or “JCC”) consisting of three (3) representatives, or such other
number, as may be agreed upon by the Parties, designated by each Party of appropriate authority and scope of functional responsibility
within that Party’s organization. The JCC shall operate in accordance with the provisions of Sections 3.3 to 3.5, and shall
have no authority to alter, amend or waive the terms and conditions of this Agreement, including any payment conditions or terms,
periods for performance, or obligations of the Parties. A Party may change one or more of its representatives serving on the JCC
at any time upon written notice to the other Party; provided, that such replacement is of comparable authority and scope
of functional responsibility within that Party’s organization as the person he or she is replacing. The JCC shall serve solely
as a forum for discussion regarding the Parties’ co-promotion activities for the applicable Licensed Product(s) pursuant
to a marketing plan developed by Allergan for the applicable Licensed Product(s). Allergan shall have final decision-making authority
for all matters regarding Commercialization of the Licensed Products. The JCC shall remain in effect until either Party’s
termination of the applicable Co-Promotion Option Right pursuant to this ARTICLE 5, or for such longer period as the Parties may
mutually agree.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	40

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

5.4.       Co-Promotion
Agreement; Detailing Efforts.

 

5.4.1.     No
later than one-hundred twenty (120) days following Assembly’s exercise of a Co-Promotion Option Right, the Parties shall
negotiate in good faith and enter into the terms of a co-promotion agreement, the terms of which shall be consistent with this
ARTICLE 5 and such additional customary terms and conditions (including terms regarding training, marketing materials, responsibility
for recalls and adverse event reporting, and maintenance of records relating to detailing activities) as may be appropriate to
provide for such co-promotion activities (the “Co-Promotion Agreement”). Notwithstanding anything to
the contrary in this Agreement, Assembly shall not have the right to co-promote a Licensed Product in a country prior to the effective
date of the Co-Promotion Agreement for such Licensed Product in such country.

 

5.4.2.     Upon
execution of a Co-Promotion Agreement with respect to a country, Assembly shall be responsible for [* * *] ([* * *]%) of the detailing
efforts to physicians who are not general practitioners in the applicable country for the applicable Licensed Product. In addition,
Assembly may not engage a contract sales organization in respect of any co-promotion activities of a Licensed Product in the United
States or China. Assembly shall comply, and shall cause the Assembly sales force and all other employees, agents and representatives
of Assembly to comply, with all applicable Laws, regulations and guidelines in connection with its promotion, marketing and sale
activities in respect of a Licensed Product, including without limitation the Prescription Drug Marketing Act and the Federal Anti-Kickback
Statute. Assembly shall design and implement incentive compensation programs for its internal sales force responsible for detailing
efforts under the Co-Promotion Agreement, that are comparable to Allergan’s incentive compensation programs for Allergan’s
internal sales force.

 

5.4.3.     Notwithstanding
anything to the contrary in this Agreement, Assembly’s right to co-promote Licensed Products in either the United States
or China is subject to Assembly possessing a fully trained and qualified sales force consisting of Assembly FTEs in the applicable
jurisdiction, as determined by Allergan based on the same criteria applied by Allergan to the qualification and training of its
own sales representatives, at least ninety (90) days prior to the commencement of detailing for the applicable Licensed Product
in the applicable jurisdiction.

 

5.5.       Co-Promotion
Expenses. Allergan, or its Sublicensees and Distributors on behalf of Allergan, shall promote, detail and book sales, and be
solely responsible for expenses associated with Commercialization of the Licensed Products. In the event Assembly exercises either
or both of its Co-Promotion Option Rights with respect to a Licensed Product, as to be set forth more fully in the Co-Promotion
Agreement, Allergan shall reimburse Assembly [* * *] for Assembly’s detailing efforts in the applicable country based on
[* * *] as mutually determined by the Parties; provided that, in the event Assembly does not provide [* * *] ([* * *]%)
of the detailing efforts in a country in any full Calendar Quarter pursuant to Section 5.4 following execution of the Co-Promotion
Agreement with respect to such country, Allergan may [* * *].

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	41

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

ARTICLE
6

Regulatory Affairs; MANUFACTURING

 

6.1.       During
Compound R&D Term. On a Licensed Compound-by-Licensed Compound basis, Assembly shall own all Regulatory Documentation relating
to a Licensed Compound or Licensed Products incorporating such Licensed Compound for a Permitted Indication during the Compound
R&D Term of such Licensed Compound. During the Compound R&D Term of a Licensed Compound for a Permitted Indication:

 

6.1.1.     
Assembly shall conduct interactions or communications with (including preparing communications or submissions to) such Governmental
Authority relating to such Licensed Compound or a Licensed Product incorporating such Licensed Compound;

 

6.1.2.     
Assembly shall promptly provide Allergan with (i) copies of all material written or electronic communications received by it or
its Affiliates from, or forwarded by it or its Affiliates to, any Governmental Authority related to such Licensed Compound or a
Licensed Product incorporating such Licensed Compound, including copies of all minutes and summaries of all meetings and discussions
with any Governmental Authority concerning the R&D Plan or such Licensed Compound or Licensed Product, and (ii) written notice
of all meetings and discussions scheduled with any Governmental Authority concerning such Licensed Compound or Licensed Product
in sufficient time to give Allergan a reasonable opportunity to attend such meetings and discussions;

 

6.1.3.     Allergan
shall have the right to review and comment on any proposed substantive communication or submission to any Governmental Authority
related to such Licensed Compound or Licensed Product, and Assembly shall incorporate all reasonable comments of Allergan;

 

6.1.4.     Allergan
shall also be entitled to have at least one (1) representative of Allergan (or its Affiliates) present at any meetings or discussions
with any Governmental Authority related to such Licensed Compound or Licensed Product if permitted by applicable Law and consistent
with the practices of the relevant Governmental Authority;

 

6.1.5.     Without
limitation to the foregoing, no substantive changes or amendments, whether mandated by an institutional review board or otherwise,
shall be made to any Clinical Trial protocol or investigator-related materials relating to such Licensed Compound or Licensed Product
without Allergan’s prior written approval; and

 

6.1.6.     Where
Allergan receives from Assembly any document or proposed communication or submission for review, Allergan shall carry out such
review promptly and shall provide its feedback to Assembly within five (5) Business Days after receiving the same or such shorter
period as may be required in order to allow Assembly to comply with its obligations under applicable Law or the reasonable requirements
of the relevant Governmental Authority, if applicable.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	42

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

6.2.       Following
Compound R&D Term. On a Licensed Compound-by-Licensed Compound basis, following the Compound R&D Term for such Licensed
Compound, Allergan shall own, and be responsible for preparing, seeking, submitting and maintaining, all regulatory filings and
Regulatory Approvals for such Licensed Compound and Licensed Products incorporating such Licensed Compound, including preparing
all reports necessary as part of a regulatory filing or Regulatory Approval. Except to the extent prohibited by applicable Law,
following the Compound R&D Term for such Licensed Compound, all Regulatory Documentation (including all Regulatory Approvals)
relating solely to the relevant Licensed Compound or Licensed Products shall be owned by and shall be the sole property and held
in the name of Allergan or its designated Affiliate, Sublicensee or designee, and Assembly hereby assigns to Allergan all of its
right, title, and interest in and to all such Regulatory Documentation (including such Regulatory Approvals) and all Existing Regulatory
Documentation (including any existing Regulatory Approvals), in each case to the extent such solely relates to such Licensed Compound
or a Licensed Product incorporating such Licensed Compound (collectively, the “Assigned Regulatory Documentation”,
with any such Regulatory Documentation retained by Assembly pursuant to this sentence being “Retained Regulatory Documentation”);
provided that any IND or other Regulatory Approval filed with respect to a Licensed Product shall be deemed Assigned Regulatory
Documentation. Assembly shall duly execute and deliver or cause to be duly executed and delivered such instruments and shall do
and cause to be done such acts and things, including the filing of such assignments, agreements, documents and instruments, as
may be necessary under, or as Allergan may reasonably request in connection with or to carry out more effectively the purpose of
or to assure and confirm unto Allergan its rights under, this ARTICLE 6. On a Licensed Compound-by-Licensed Compound basis, following
the Compound R&D Term for a Licensed Compound, Allergan shall have the [* * *] to conduct and control all interactions and
communications with any Governmental Authority relating to such Licensed Compound or Licensed Product incorporating such Licensed
Compound, or the Exploitation thereof.

 

6.3.       Inspection
or Audit. If any Governmental Authority conducts, or gives notice to Assembly of its intent to conduct, an inspection or audit
at any investigational site or any Assembly office or facility or to take any other regulatory action, or otherwise makes an inquiry,
in each case with respect to or involving or that would otherwise reasonably be expected to affect the Licensed Compounds or Licensed
Products or the conduct of the R&D Plan, Assembly shall, unless prohibited from doing so by applicable Law, notify Allergan
within three (3) Business Days after Assembly first learns of such governmental inspection or audit and, where reasonably practicable,
consult with Allergan in advance of implementing, and permit Allergan to comment on, any proposed plan of action for responding
to or complying with any associated demand or request of such Governmental Authority. Wherever possible, and to the extent permitted
under applicable Law, Assembly shall provide Allergan with the opportunity (a) to have a representative present at any such governmental
inspection or audit and (b) to review in advance and comment on any communications or submissions proposed to be made by Assembly
to any Regulatory Authority in relation to any such inquiry, inspection or audit. Assembly shall not unreasonably reject any comments
provided by Allergan under this ARTICLE 6.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	43

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

6.4.       Manufacturing
of Licensed Compounds and Licensed Products.

 

6.4.1.     Responsibility.
Subject to the provisions of this Section 6.4, Assembly (either directly or through the use of a Third Party as a contract manufacturing
organization (a “CMO”)) shall be solely responsible for the manufacture and supply of Compound Candidates,
Product Candidates, Licensed Compounds and Licensed Products, in bulk or finished form as determined by Allergan in its sole discretion,
for Development and Commercialization in the Field in the Territory. For clarity, “bulk” forms of Product Candidates
or Licensed Products for the purposes of this Section 6.4.1 will have been subject to the encapsulation and coating process.

 

6.4.2.     Specifications
and Quality. Specifications for the release of Compound Candidates, Product Candidates, Licensed Compounds and Licensed Products
in bulk or finished form will be set forth in the R&D Plan (such specifications, as amended by mutual agreement of the Parties
from time to time, the “Specifications”). The Parties will use good faith reasonable efforts to enter
into a clinical pharmaceutical product quality agreement within sixty (60) days of the Effective Date (as amended from time to
time, the “Clinical Quality Agreement”). Assembly shall be responsible for ensuring that Compound Candidates,
Product Candidates, Licensed Compounds and Licensed Products it or any CMO supplies hereunder to Allergan or its designee are manufactured
and stored in accordance with their applicable Specifications, this Agreement and the Clinical Quality Agreement. The Clinical
Quality Agreement will be updated by mutual agreement of the Parties to reflect additional relevant information resulting from
ongoing Development activities under this Agreement.

 

6.4.3.     Manufacturing
Facility.

 

(a)     Assembly
shall use good faith efforts to establish a manufacturing facility to support manufacturing of each Licensed Product and Licensed
Compound contained therein (the “Manufacturing Facility”) in a timely fashion, but in no event later
than, on a Licensed Product-by-Licensed Product basis, [* * *] of such Licensed Product (the “Facility Deadline”)
unless and until Assembly provides written notice to Allergan that it will abandon those efforts, which notice must be given, if
at all, no less than [* * *] prior to the applicable Facility Deadline. Assembly shall update Allergan every Calendar Quarter (or
more often at Allergan’s reasonable request) as to the progress of the Manufacturing Facility and the estimated timeline
for the completion of such Manufacturing Facility. In addition, Assembly shall promptly notify Allergan if and as soon as it reasonably
believes in good faith that the Manufacturing Facility will not be ready by or before the Facility Deadline for a Licensed Product
or that the Manufacturing Facility will not be able to manufacture a Licensed Product (and the Licensed Compound contained therein)
using the final manufacturing process for such Licensed Product in order to undergo inspection by a Regulatory Authority to include
such Manufacturing Facility in the application for Regulatory Approval of such Licensed Product. Upon Assembly’s notice to
Allergan as described in the preceding sentence, the Parties shall meet to discuss the timing for the Manufacturing Facility’s
completion.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	44

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(b)     If
(i) Assembly notifies Allergan no less than [* * *] prior to the Facility Deadline for a Licensed Product that Assembly elects
not to establish a Manufacturing Facility for such Licensed Product, (ii) Allergan, at any time with respect to a Licensed Product,
reasonably believes in good faith that the Manufacturing Facility will not be established by the Facility Deadline and Assembly
will otherwise not be able to itself manufacture commercial supplies of such Licensed Product or Licensed Compound or (iii) the
Manufacturing Facility has not been established and become operational by the Facility Deadline with respect to such Licensed Product
and Licensed Compound, Allergan shall have the right, at its option and in its sole discretion, to establish, itself or via an
Affiliate, a manufacturing facility for such Licensed Product and the Licensed Compound therein, as applicable, for which the Facility
Deadline has not been met, or to directly engage any CMOs (including one or more CMOs used by Assembly) to act as Allergan’s
primary and/or secondary suppliers of such Licensed Product and the Licensed Compound therein, as applicable, for which the Facility
Deadline has not been met. If, in the process of engaging or establishing a CMO for any aspect of the manufacture of one or more
Licensed Products or Licensed Compounds, Allergan makes any capital expenditure investment with respect to such CMO (including
any investment in facility expansion or upgrades or in the purchase of new or updated equipment or tooling), Assembly and its Affiliates,
licensees and sublicensees shall not, directly or indirectly, use, access or otherwise benefit from any such capital expenditure
investment by Allergan with respect to such CMO, including ensuring that such CMO does not manufacture for Assembly, its Affiliates,
licensees or sublicensees any Microbiome-Based Compounds or products containing Microbiome-Based Compounds using any facilities,
equipment or other tools that have been purchased or additional capacity that has been realized, in each case as a result of such
investment by Allergan; provided that Assembly shall not be so restricted if it makes payment to Allergan that constitutes
[* * *] ([* * *]%) of the aggregate costs of such capital expenditure investment by Allergan (including, for the avoidance of doubt,
any such investment previously made by Allergan and any such investment to be made at future time(s) by Allergan) as disclosed
by Allergan to Assembly upon request by Assembly. Allergan will, at Assembly’s request, provide any documentation in Allergan’s
possession not subject to a confidentiality obligation that corroborates the amount of the relevant capital expenditure investment.
If Assembly has provided timely notice under Section 6.4.3(a), or met its obligation to use good faith efforts to establish the
Manufacturing Facility under Section 6.4.3(a), a failure to establish the Manufacturing Facility shall not constitute a breach
of this Agreement by Assembly.

 

(c)     If
the Manufacturing Facility has been established and becomes operational by the Facility Deadline for a Licensed Product and Licensed
Compound, then, unless Allergan has, pursuant to Section 6.4.3(b), (i) entered into any agreement with a CMO or (ii) otherwise
made any investment in (A) its or its Affiliate’s manufacturing facility or (B) a CMO’s equipment, facility or other
tools, in each case of clause (i) and (ii) for any aspect of the manufacture of such Licensed Product and Licensed Compound, Assembly
shall serve as Allergan’s primary manufacturer for such Licensed Product and Licensed Compound at the Manufacturing Facility,
and Allergan shall, at its option, have the right to have itself or an Affiliate, or to directly engage the CMO(s) used by Assembly
or other CMOs to act as Allergan’s secondary manufacturers for such Licensed Product and Licensed Compound, and Allergan
shall be able to purchase a reasonable quantity of Licensed Product and Licensed Compound from such secondary manufacturer in order
to satisfy such manufacturer’s requirements; provided that in the event Allergan has made any investment described in clause
(ii) of this Section 6.4.3(c) for any aspect of the manufacture of any Licensed Product or Licensed Compound, Allergan shall have
the option of electing, by written notice to Assembly, to have (X) the manufacturer in which the relevant investment was made (or
its assignee) be the primary manufacturer for any Licensed Product(s) and Licensed Compound(s) for which Assembly has not previously
been designated as a primary manufacturer pursuant to this Section 6.4.3(c) and (Y) Assembly as the secondary manufacturer for
such Licensed Product(s) or Licensed Compound(s).

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	45

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(d)     Assembly
shall provide reasonable assistance, including transferring such Know-How, Materials and other technology to Allergan, its Affiliate
or any CMO, and facilitating interaction between Allergan and any CMO, as reasonably requested by Allergan and/or its CMO(s) to
enable Allergan or its Affiliate to establish a manufacturing facility to manufacture such Licensed Product and Licensed Compound,
or to enable any CMO(s) engaged by Allergan to manufacture such Licensed Product and Licensed Compound, in each case, as permitted
in this Section 6.4.3. In the event that Allergan directly engages a CMO(s) of Assembly to manufacture any Licensed Product or
Licensed Compound pursuant to this Section 6.4.3 and is unable to expeditiously enter into an agreement with such CMO on substantially
similar terms as such CMO’s agreement with Assembly or its Affiliates, Assembly shall use Commercially Reasonable Efforts,
upon Allergan’s request, to assign (in whole or in part, if applicable) its agreement with such CMO to Allergan or its designated
Affiliate with respect to such Licensed Product or Licensed Compound.

 

(e)     Notwithstanding
anything to the contrary in this Agreement, prior to release of any Licensed Product or Licensed Compound from the Manufacturing
Facility for any Clinical Trial, Allergan will be permitted to conduct a quality assurance audit of the Manufacturing Facility
confirming quality assurance compliance compatible with entry of the Manufacturing Facility inside Allergan’s manufacturing
network. 

 

6.4.4.     Clinical
Supply. On a Licensed Compound-by-Licensed Compound basis, until the Completion of the first POC Trial for a Licensed Product
incorporating such Licensed Compound, Assembly shall supply such Licensed Compounds and Licensed Products for Development under
the R&D Plan at [* * *]. On a Licensed Compound-by-Licensed Compound basis, following the Completion of first POC Trial for
a Licensed Product incorporating such Licensed Compound, Assembly shall supply such Licensed Compounds and Licensed Products for
Development by Allergan (a) [* * *] if such Licensed Compounds and Licensed Products are manufactured by Assembly; provided
that in no event [* * *] or (b) [* * *] as determined by Assembly’s [* * *] of such supply from Assembly’s CMO(s),
if such Licensed Compounds and Licensed Products are manufactured by a CMO. Supply of Licensed Compounds and Licensed Products
for Development or Clinical Trials shall be ordered by Allergan on a purchase order basis, with the Parties [* * *] on reasonable
lead times required for manufacture and delivery of such Licensed Compounds or Licensed Products, or as otherwise required to comply
with the terms of an agreement with a CMO, if such Licensed Compounds and Licensed Products are manufactured by a CMO.

 

6.4.5.     Commercial
Supply. Subject to Section 6.4.3, no later than [* * *] prior to the anticipated receipt of Regulatory Approval for the first
Licensed Product, the Parties will negotiate and enter into a supply agreement consistent with this Agreement (the “Supply
Agreement”) for Assembly to supply Licensed Products to Allergan in bulk or finished form for Commercialization of
Licensed Products. Under the Supply Agreement, Licensed Product shall be supplied (a) on [* * *] if such Licensed Compounds and
Licensed Products are manufactured by Assembly; provided that in no event [* * *], or (b) on [* * *] as determined by Assembly’s
[* * *] of such supply from Assembly’s CMO(s), if such Licensed Compounds and Licensed Products are manufactured by a CMO.
Each Party or its CMO shall use manufacturing systems, processes and procedures consistent with GMP.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	46

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

6.4.6.     Unless
otherwise agreed by the Parties and notwithstanding anything to the contrary in this Agreement, any agreement with any CMO or other
service provider entered into by Assembly on or after the Effective Date that relates to any Licensed Compound or Licensed Product
shall be assignable to Allergan without the consent of the counterparty thereto to the extent related to such Licensed Compound
or Licensed Product. With respect to any CMO appointed prior to the Execution Date that is set forth on Schedule 11.2.23,
Assembly shall be permitted to continue to perform manufacturing activities through any such manufacturer.

 

ARTICLE
7

FINANCIAL PROVISIONS

 

7.1.        Upfront
Cash Payment. In partial consideration of the rights granted under Section 2.1, within five (5) Business Days of the
Effective Date, Allergan shall pay Assembly a one-time lump sum payment of Fifty Million USD ($50M) in upfront cash, which payment
shall be non-refundable and non-creditable against other payments due hereunder.

 

7.2.        Milestone
Payments.

 

7.2.1.     Development
Milestone Payments. As additional consideration for the grant of rights under this Agreement, and on the terms and subject
to the conditions set forth herein, Allergan shall make the following payments to Assembly (the “Development Milestone
Payments”) after the achievement following the Effective Date by or on behalf of Allergan of the applicable event
set forth below (collectively, the “Development Milestone Events”). Each of the Development Milestone
Payments are payable only once per Permitted Indication as set forth in the table below upon the first achievement of each Development
Milestone Event regardless of the number of Licensed Products that are developed for such Permitted Indication or subsequent achievement
of such Development Milestone Events for such Permitted Indication with a different Licensed Product; provided, that, the
Development Milestone Events for [* * *] Permitted Indications in addition to the Initial Indications shall be payable subject
to the credit provided in Section 4.8.3. Allergan or Assembly, as applicable, will notify the other Party in writing as soon as
reasonably possible following the achievement of a Development Milestone Event. Allergan shall pay to Assembly the corresponding
Milestone Payment within [* * *] days after achievement of the applicable Development Milestone Event. The Development Milestone
Payments shall be non-refundable.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	47

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

	Development

Milestones	 	Milestone Payment
	 	 	Ulcerative

Colitis	 	Crohn’s

Disease	 	Each IBS

program

up to two (2)	 	Each Additional

Permitted

Indication [* *

*](excluding [* *

*]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]

 

7.2.2.     Sales
Milestone Payments. As additional consideration for the grant of rights under this Agreement, and on the terms and subject
to the conditions set forth herein, Allergan shall make the following payments to Assembly (the “Sales Milestone Payments,”
together with the Development Milestone Payments, the “Milestone Payments”) after the achievement following
the Effective Date by or on behalf of Allergan of the applicable event set forth below (collectively, the “Sales Milestone
Events,” together with the Development Milestone Events, the “Milestone Events”). Each
of the Sales Milestone Payments are payable only once upon achievement in the first Calendar Year in which aggregate annual Net
Sales of [* * *] for that Calendar Year in the Territory surpass the respective Net Sales threshold set forth in the table below.
Allergan will notify Assembly in writing of the achievement of a Sales Milestone Event within forty-five (45) days of the end of
the applicable Calendar Year. Allergan shall pay to Assembly such Milestone Payment within [* * *] days after the end of the Calendar
Year in which the applicable Sales Milestone Event occurs. The Sales Milestone Payments shall be non-refundable.

 

	Sales Milestones	 	Milestone Payment
	Net Sales of [* * *] in the Territory in a Calendar Year of greater than $[* * *]	 	$[* * *]
	Net Sales of [* * *] in the Territory in a Calendar Year of greater than $[* * *]	 	$[* * *]
	Net Sales of [* * *] in the Territory in a Calendar Year of greater than $[* * *]	 	$[* * *]
	Net Sales of [* * *] in the Territory in a Calendar Year of greater than $[* * *]	 	$[* * *]
	Net Sales of [* * *] in the Territory in a Calendar Year of greater than $[* * *]	 	$[* * *]
	Net Sales of [* * *] in the Territory in a Calendar Year of greater than $[* * *]	 	$[* * *]
	Net Sales of [* * *] in the Territory in a Calendar Year of greater than $[* * *]	 	$[* * *]
	Net Sales of [* * *] in the Territory in a Calendar Year of greater than $[* * *]	 	$[* * *]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	48

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

In the event that more than
one Sales Milestone Event is achieved in the same Calendar Year, all applicable Sales Milestone Payments shall become due in respect
of such Calendar Year.

 

7.3.        Royalty
Payments. Subject to the terms of this Agreement (including Section 7.4), on a Licensed Product-by-Licensed Product
basis, Allergan or its Affiliates shall pay Assembly a royalty on annual Net Sales of each Licensed Product in the Territory as
set forth in this Section 7.3 (“Royalty Payment”). The Royalty Payment shall be payable to Assembly on
a Licensed Product-by-Licensed Product and country-by-country basis until the later to occur of (a) the last to expire Valid Claim
of a Licensed Compound Patent that Covers the manufacture or sale of such Licensed Product by Allergan, its Affiliates or Sublicensees
in such country and (b) (i) for such countries where there is [* * *] or more of Regulatory Exclusivity, the expiry of Regulatory
Exclusivity granted by the applicable Governmental Authority for such Licensed Product in such country and (ii) for such countries
in which there is less than [* * *] of Regulatory Exclusivity, [* * *] after the expiration of such Regulatory Exclusivity (the
“Royalty Term”). The Royalty Payments for Licensed Products during the Royalty Term shall be as follows:

 

	Net Sales Tranche	 	US Royalty

Rate for such

portion of

such Net Sales

from the

United States	 	Royalty Rate

for such

portion of such

Net Sales from

outside of the

United States
	For that portion of aggregate global Net Sales of the applicable Licensed Product in any given Calendar Year of less than or equal to $[* * *]	 	[* * *]%	 	[* * *]%
	For that portion of aggregate global Net Sales of the applicable Licensed Product in any given Calendar Year of greater than $[* * *] but less than or equal to $[* * * 	 	[* * *]%	 	[* * *]%
	For that portion of aggregate global Net Sales of  the applicable Licensed Product in any given Calendar Year of greater than $[* * *  but less than or equal to $[* * *]	 	[* * *]%	 	[* * *]%
	For that portion of aggregate global Net Sales of the applicable Licensed Product in any given Calendar Year of greater than $[* * *] but less than or equal to $[* * *]	 	[* * *]%	 	[* * *]%
	For that portion of aggregate global Net Sales of the applicable Licensed Product in any given Calendar Year of greater than $[* * *]	 	[* * *]%	 	[* * *]%

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	49

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

7.4.        Reductions.

 

7.4.1.     Biosimilar
Competition. On a Licensed Product-by-Licensed Product and country-by-country basis, if a Licensed Product is sold in a country
in the Territory and at any time a product that is a Biosimilar Product with respect to such Licensed Product is sold or marketed
by a Third Party in such country and the aggregate sales of all Biosimilar Products reach [* * *] percent ([* * *]%) of the market
share held by the Licensed Product in such country in the last full Calendar Quarter prior to the Biosimilar Product’s commercial
sale in such country (calculated on a unit month over month basis) in any Calendar Quarter, then the Net Sales of such Licensed
Product in such country shall be reduced by [* * *] percent ([* * *]%) for the remainder of the applicable Royalty Term.

 

7.4.2.     Expiry
of Regulatory Exclusivity. Solely in the event that, pursuant to clause (b)(ii) of the Royalty Term set forth in
Section 7.3, on a Licensed Product-by-Licensed Product and country-by-country basis,  the Royalty Term extends beyond
the expiration of both (a) the last to expire Valid Claim of a Licensed Compound Patent that Covers the manufacture or sale of
a Licensed Product in such country by Allergan, its Affiliates or Sublicensees and (b) the expiration of Regulatory Exclusivity
in such country, Net Sales in any such country shall be reduced by [* * *] percent ([* * *]%) for the remainder of the applicable
Royalty Term.

 

7.4.3.     Blocking
Third Party IP. Subject to Section 11.2.3, if, during the Term and on a Licensed Product-by-Licensed Product and country-by-country
basis, Allergan obtains rights under any Blocking Third Party IP in order to Develop, manufacture, or Commercialize a Licensed
Product in the Field in a country in the Territory, then, in the event Allergan obtains a license or acquisition of such Blocking
Third Party IP, and any amounts, including without limitation upfront payments, milestones or royalties, are paid by Allergan to
any Third Party to license or acquire such Blocking Third Party IP (“Third Party Payments”), Allergan
shall have the right to reduce any amount otherwise payable to Assembly pursuant to the terms of this Agreement that relate to
such Licensed Product, as such payments may be adjusted by Sections 7.4 or 10.9(c) in a given period, by up to [* * *] percent
([* * *]%) of the Third Party Payments; provided, that, in no event may any amounts payable to Assembly hereunder be reduced
as a result of the application of this Section 7.4.3 by more than [* * *] percent ([* * *]%) of the amount that would otherwise
be owed to Assembly hereunder (after all other Permitted Deductions are taken). If the amount equal to [* * *] percent ([* * *]%)
of any Third Party Payments is not fully offset against amounts otherwise payable to Assembly under Section 7.2 and Section 7.3
in the applicable period as a result of the proviso of the preceding sentence, such amount may be carried forward and applied to
future periods until fully exhausted, subject to the other provisions of this Section 7.4.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	50

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

7.4.4.     Backup
Compounds. On a Licensed Product-by-Licensed Product basis, Allergan shall be entitled to deduct from any Royalty Payments
and Development Milestone Payments payable to Assembly in respect of a Licensed Product that incorporates a Backup Compound an
amount equal to [* * *] incurred by Allergan for the POC Trial for such Licensed Product [* * *] of such Development Costs). For
the avoidance of doubt, in addition to the provision of this Section 7.4.4, all reductions of Royalty Payments set forth in
Section 7.4 shall apply to any Licensed Product, including a Licensed Product that incorporates a Backup Compound.

 

7.4.5.     Development
Costs Reductions.

 

(a)     On
a Licensed Product-by-Licensed Product basis, Allergan shall be entitled to deduct from Development Milestone Payments the amounts
described in Section 4.8.2(b), as applicable.

 

(b)     On
a Licensed Product-by-Licensed Product basis, Allergan shall be entitled to deduct from Development Milestone Payments with respect
to the applicable Licensed Product the amounts described in Section 4.8.3(b), as applicable

 

7.5.        Taxes.
Each Party shall be responsible for its own taxes, duties, levies, imposts, assessments, deductions, fees, withholdings or similar
charges imposed on or measured by net income or overall gross income (including branch profits), gross receipts, capital, ability
or right to do business, property, and franchise or similar taxes pursuant to applicable Law. If Allergan is required to deduct
or withhold from any payment due hereunder any taxes, duties, levies, imposts, assessments, deductions, fees, and other similar
charges by applicable Law or any Governmental Authority (“Withholding Taxes”), then Allergan shall pay
such Withholding Taxes to the local applicable Governmental Authority and make the payment to Assembly of the net amount due after
deduction or withholding of such taxes. Such Withholding Taxes shall be treated for all purposes of this Agreement as having been
paid to Assembly hereunder. Allergan shall submit reasonable proof of payment of the Withholding Taxes within a reasonable period
of time after such Withholding Taxes are remitted to the Governmental Authority. The Parties shall reasonably cooperate to eliminate
or minimize any such Withholding Taxes. Assembly shall indemnify and hold harmless Allergan for any taxes, including Withholding
Taxes, Assembly owes to a Governmental Authority for which Allergan is held responsible and for which prior withholding has not
been made, and Allergan shall hold Assembly harmless for any fees, penalties and interest that are imposed on Assembly arising
out of Allergan’s failure to withhold and remit Withholding Taxes to Governmental Authorities in accordance with this Section
and applicable Laws, unless such failure arises from the acts or omissions of Assembly (for example, the provision of incorrect
beneficial owner information or invalid forms). The Parties will reasonably cooperate to provide sufficient documentation to enable
Assembly to receive any credits available under applicable Law. Assembly represents and agrees that it is the beneficial owner
of the payments and is a resident of the United States by virtue of the applicable Law of the United States, and does not have
a fixed base, office or permanent establishment in Ireland through which it carries on a trade or business.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	51

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

7.6.        Value
Added Tax. Notwithstanding anything contained in Section 7.5, this Section 7.6 shall apply with respect to VAT. All
Payments are exclusive of VAT. If any VAT is required in respect of any payments under applicable Law, the payor shall pay VAT
at the applicable rate in respect of any such payments following the receipt of a valid VAT invoice in the appropriate form issued
by the payee in respect of those payments, such VAT to be payable on the later of the due date of the payment of the payments to
which such VAT relates and forty-five (45) days after the receipt by the payor of the applicable valid invoice relating to
that VAT payment. The Parties will reasonably cooperate to issue valid VAT invoices for all amounts due under this Agreement consistent
with VAT requirements. The payor shall not be responsible for any penalties and interest resulting from the failure by the payee
to collect (if not included on a valid VAT invoice) or remit any such VAT. The Parties shall reasonably cooperate to report, eliminate
or minimize the amount of any such VAT imposed on the transactions contemplated in this Agreement.

 

7.7.        Allergan
Statements and Payment. Allergan shall, on and from the date of Launch, deliver to Assembly, within [* * *] days after
the end of each Calendar Quarter, a report setting forth for such Calendar Quarter the following information for Licensed Products
for such portion of Net Sales from the United States and such portion of Net Sales from outside of the United States: (a) Net Sales
of Licensed Products on a Licensed Product-by-Licensed Product, (b) the Royalty Payments due to Assembly on account of Net Sales
of Licensed Products, (c) the exchange rates used in calculating any of the foregoing, and (d) any deductions provided for under
this Agreement. If no Royalty Payments were payable for any Calendar Quarter, Allergan’s report shall so state. Allergan
shall pay such Royalty Payments within simultaneously with the delivery of each such report.

 

7.8.        Currency
Exchange. For any currency conversion required in determining the amount of payments due hereunder, such conversion
shall be made as follows: (a) when calculating Net Sales, the amount of such sales in foreign currencies shall be converted into
USD using the average of the daily last price rate of exchange for such currencies for the relevant month utilized by Allergan
for public financial accounting purposes in accordance with GAAP and (b) when calculating all other sums due under this Agreement,
the amount in foreign currencies shall be converted into USD using the average of daily last price rate of exchange for such currencies
for the relevant month utilized by Allergan for public financial accounting purposes in accordance with GAAP.

 

7.9.        Payment
Method. All payments due to a Party hereunder shall be made via wire transfer of immediately available USD funds to
an account designated in writing by that Party to the other Party.

 

7.10.     Records
Retention; Financial Audit; Consolidation Reporting.

 

7.10.1.     Record
Retention. Each Party shall maintain complete and accurate books, records and accounts for the calculation of Development Costs,
reporting and payment of Withholding Taxes, and, with respect to Allergan, Milestone Payments and Royalty Payments due, in sufficient
detail to confirm whether any Milestone Payments are payable and the accuracy of any Development Cost reports and any Royalty Payments
required under this Agreement, which books, records and accounts shall be retained until the later of (a) three (3) years after
the end of the period to which such books and records pertain and (b) the expiration of the applicable tax statute of limitations
(or any extensions thereof), or longer as is required by applicable Law.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	52

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

7.10.2.     Financial
Audit. Each Party (the “Auditing Party”) shall have the right to have an independent certified public
accounting firm of internationally recognized standing reasonably acceptable to the Auditing Party have access during normal business
hours, upon reasonable prior written notice, to such of the records of the other Party (the “Audited Party”)
and its Affiliates as may be required to verify the accuracy of the calculation of Development Costs, Milestone Payments, Net Sales
and Royalty Payments incurred or due for any year ending not more than three (3) years prior to the date of such request. Such
verifications may not (a) be conducted for any Calendar Quarter more than three (3) years after the end of such quarter, (b) be
conducted more than once in any twelve (12) month period or (c) be repeated for any period unless, subject to the foregoing clauses
(a) and (b), a subsequent verification uncovers a material error that is reasonable for the Auditing Party to assume existed in
previously audited records. The independent certified public accounting firm shall disclose to the Auditing Party only the amounts
which the independent certified public accounting firm believes to be inaccurate, with respect to Development Costs, or due and
payable hereunder to Assembly, with respect to Milestone Payments and Royalty Payments, shall provide a copy of same to the Audited
Party, and shall disclose no other information revealed in such audit. Any and all records of the Audited Party and its Affiliates
examined by such independent certified public accounting firm shall be deemed the Audited Party’s Confidential Information,
which may not be disclosed by said independent certified public accounting firm to any Third Party or (except for the information
expressly sought to be confirmed by the Auditing Party as set forth in this Section 7.10.2) to the Auditing Party. The Auditing
Party shall bear all costs of such audit, unless the audit reveals a discrepancy in its favor of more than five percent (5%), in
which case the Audited Party shall bear the cost of the audit. The result of the audit shall, in the absence of manifest error,
be final and binding on the Parties.

 

7.10.3.     Payment
of Additional Amounts. If, based on the results of any audit conducted under Section 7.10.2, additional payments are owed to
a Party under this Agreement, then the other Party shall make such additional payments within thirty (30) Business Days after the
accounting firm’s written report is delivered to the Parties, with interest calculated thereon in accordance with Section
7.11. If the report is contested by either, the Parties shall follow the dispute resolution procedures described in Section 13.4.
The responsible Party shall pay any amount ultimately found due within ten (10) Business Days after resolution of the dispute.

 

7.11.      Interest
on Late Payments. Any failure by either Party to make a payment of any undisputed amount when due shall obligate that
Party to pay interest to the other Party on the amount unpaid at the most recently published LIBOR plus two percent (2%) per annum
(or, if lower, the maximum rate permitted by applicable Law) calculated on a daily basis and payable for the period from the
date payment is due until the date payment is actually made, without prejudice to recipient’s right to receive payment on
the due date.

 

7.12.      Right
to Offset. Each Party shall have the right to offset any amount owed by the other Party to such first Party under or
in connection with this Agreement, including pursuant to ARTICLE 10 or in connection with any breach, against any payments owed
by such first Party to such other Party under this Agreement, in each case based on a final determination by an independent certified
public accounting firm pursuant to Section 7.10.2, any agreement of the Parties as to amounts owed or pursuant to an arbitration
proceeding pursuant to Section 13.4, as applicable. Such offsets shall be in addition to any other rights or remedies available
under this Agreement and applicable Law.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	53

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

ARTICLE
8

CONFIDENTIALITY

 

8.1.       Protection
of Confidential Information. The Receiving Party shall not, and shall cause its Affiliates and its and their officers,
directors, employees and agents not to, disclose or disseminate Confidential Information of the Disclosing Party to any Third Party
unless expressly permitted hereunder, and shall not use such Confidential Information for any purpose other than in performing
the Receiving Party’s obligations or exercising the Receiving Party’s rights hereunder. In addition, the Receiving
Party shall take, and shall cause its Affiliates to take, reasonable steps to protect the Confidential Information of the Disclosing
Party from unauthorized use or disclosure, which steps shall be no less than those the Receiving Party takes to protect its own
confidential and/or proprietary material of a similar nature. The foregoing obligations shall apply equally to all copies, extracts
and summaries of the Disclosing Party’s Confidential Information.

 

8.2.       Certain
Permitted Disclosures.

 

8.2.1.     Disclosure
Required by Law. Notwithstanding the foregoing, each of Assembly and Allergan may disclose Confidential Information of the
other Party to a Third Party to the extent such disclosure is reasonably necessary to exercise the rights granted to or retained
by it under this Agreement, including in preparing, filing, maintaining or prosecuting Patents, prosecuting or defending litigation,
complying with applicable Law, submitting information to Governmental Authorities or to acquirers; provided, that if a Party
is required by Law to make any such disclosure of the Disclosing Party’s Confidential Information, to the extent it may legally
do so it shall: (a) give reasonable advance notice to the Disclosing Party of such disclosure to permit the Disclosing Party to
use its reasonable efforts to secure confidential treatment of such Confidential Information prior to disclosure to the extent
such treatment is applicable (whether through protective orders or otherwise), (b) cooperates with the Disclosing Party in the
exercise of its right to protect the confidentiality of the Confidential Information and (c) discloses only that Confidential Information
that is required to be disclosed. Each Party shall be responsible for any breach of its confidentiality obligations by its respective
employees and agents.

 

8.2.2.     Disclosure
to Certain Third Parties. The Receiving Party may disclose such of the Disclosing Party’s Confidential Information to
(a) its Affiliates, employees, directors, consultants, subcontractors and permitted sublicensees who have a need to know such Confidential
Information, (b) Sublicensees or existing or potential Distributors or vendors acting on such Party’s behalf, (c) with respect
to Confidential Information that is Licensed Compound Know-How, to existing or potential licensees and collaboration partners who
are granted, or are evaluating in good faith the possibility of receiving, rights under such Licensed Compound Know-How, in each
case of clauses (a) through (c) who are bound by obligations of confidentiality and non-use substantially at least as stringent
as those by which the Receiving Party is bound hereunder.

 

8.3.       Return
of Confidential Information. Upon termination of this Agreement, the Receiving Party shall promptly return all of the
Disclosing Party’s Confidential Information, including all information relating to Licensed Products, unless, and solely
for so long as, the Receiving Party has continuing rights to use the foregoing pursuant to ARTICLE 10, received hereunder and copies
thereof in any medium, except that the Receiving Party may retain one copy for its legal files.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	54

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

8.4.       Unauthorized
Use. If either Party becomes aware or has Knowledge of any unauthorized use or disclosure of the Disclosing Party’s
Confidential Information, it shall promptly notify the Disclosing Party of such unauthorized use or disclosure.

 

8.5.       Public
Disclosure.

 

8.5.1.     Neither
Party shall mention or otherwise use the name, logo or Trademark of the other Party or any of its Affiliates or any of its or their
sublicensees or any abbreviation or adaptation thereof in any advertising, marketing, promotional or sales literature or other
form of publicity or in any document employed to obtain funds or financing without the prior written approval of the Party whose
name is to be used, except as follows:

 

(a)     Allergan,
its Affiliates and Sublicensees may state that they are licensed under the Licensed Compound Patents, and Assembly and its Affiliates
may state that they have licensed the Licensed Compound Patents to Allergan, its Affiliates and Sublicensees. For this purpose,
each Party may use the name and logo of the other Party, and may make a high level non-confidential statement about the existence,
scope and key terms of this contractual relationship that is consistent with and limited to the information that is included within
the press releases set out in Schedule 8.5.1 or any other communication content that the Parties agree is acceptable for general
public use.

 

(b)     Either
Party or its Affiliates may make such a disclosure (i) to the extent required by the rules of any nationally recognized securities
exchange, quotation system or over-the-counter market on which such Party has its securities listed or traded, (ii) as required
by applicable Law, or (iii) to any acquirers, potential acquirers, investors, prospective investors, lenders and other potential
financing sources who are obligated to (A) keep such information confidential and (B) use such information solely to evaluate the
applicable transaction.

 

(c)     The
Parties have agreed upon the content of one (1) or more press releases which shall be issued substantially in the form(s) attached
hereto as Schedule 8.5.1, the release of which the Parties shall coordinate in order to accomplish such release promptly upon
execution of this Agreement. Neither Party shall issue any other public announcement, press release or other public disclosure
regarding this Agreement or its subject matter without the other Party’s prior written consent, such consent not to be unreasonably
withheld, conditioned or delayed.

 

8.5.2.     Assembly
shall use Commercially Reasonable Efforts to secure confidential treatment of this Agreement for filing with the U.S. Securities
and Exchange Commission (or any successor or replacement agency) to the extent set forth in Schedule 8.5.2.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	55

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

8.6.       Publications.
During the R&D Term neither Party shall make any publication, presentation or other announcement regarding the R&D Plan,
a Licensed Compound or a Licensed Product unless such publication, presentation or announcement has been previously approved by
the other Party (such consent not to be unreasonably withheld, conditioned or delayed) or unless required by applicable Law; provided
that in no event shall Assembly make any publication, presentation or other announcement regarding any Permitted Indication without
the prior written consent of Allergan. Where any such publication, presentation or announcement is required by applicable Law the
Party subject to such requirement shall use its commercially reasonable efforts to give prior written notice of any such proposed
publication, presentation or announcement to the other Party. Such other Party shall respond promptly through its designated representative
and in any event no later than fifteen (15) Business Days after receipt of such proposed publication, presentation or other announcement
or such shorter period as may be required by the publication, presentation or announcement. The Party desiring to make such publication,
presentation or announcement agrees to allow a reasonable period (not to exceed sixty (60) days) to permit filings for patent protection
and to otherwise address issues of Confidential Information or related competitive harm to the reasonable satisfaction of the other
Party. All publications, presentations and announcements regarding the Licensed Compounds or Licensed Products shall be controlled
by Allergan except that Assembly shall be entitled to make such an announcement if Assembly or its Affiliates is required to do
so by applicable Law.

 

ARTICLE
9

INTELLECTUAL PROPERTY

 

9.1.       Maintenance,
Prosecution and Enforcement of Patents.

 

9.1.1.     Preparation,
Filing, Prosecution and Maintenance of Product Only Patents. Allergan will have the first right, and will use Commercially
Reasonable Efforts, to identify, prepare, file, prosecute and maintain Product Only Patents in the Territory at its sole expense.
Allergan will (a) provide Assembly with reasonable time to provide comments in respect of any submission to a Governmental Authority
and (b) consider in good faith such comments in Allergan’s preparation, filing and prosecution of Product Only Patents. On
a country-by-country basis, if Allergan elects not to file, prosecute, maintain or undertake such other activities with respect
to any Product Only Patent, then Allergan will inform Assembly of such election in writing sufficiently in advance of any required
action in connection with such preparation, filing, prosecution or maintenance, and Assembly will have the right to identify, prepare,
file, prosecute and maintain, in its sole discretion and at its sole expense, Product Only Patents where Allergan elects not to
undertake such activities.

 

9.1.2.     Preparation,
Filing, Prosecution and Maintenance of Product Related Patents. Assembly will have the first right, and will use Commercially
Reasonable Efforts, to identify, prepare, file, prosecute and maintain Product Related Patents in the Territory at its own expense.
Assembly will (a) provide Allergan with reasonable time to provide comments in respect of any submission to a Governmental Authority
and (b) reasonably consider such comments in its identification, preparation, filing and prosecution of Product Related Patents.
On a country-by-country basis, if Assembly elects not to file, prosecute, maintain or undertake such other activities with respect
to any Product Related Patent, then Assembly will inform Allergan of such election in writing sufficiently in advance of any required
action in connection with such preparation, filing, prosecution or maintenance and, with Assembly’s prior written consent
(which consent shall not be unreasonably withheld, conditioned or delayed), Allergan will have the right to identify, prepare,
file and prosecute Product Related Patents, in Assembly’s name at its own expense. If a Product Related Patent
recites one or more claims that, if presented in a separate patent or application, would make that separate patent or application
a Product Only Patent (such claims, “Product Only Claims”), then (x) Assembly will use Commercially Reasonable
Efforts to file such claim(s) in a continuation, divisional, or other application as Product Only Patents; and (y) the Parties
will have those rights and obligations set forth in Section 9.1.1 as to the Product Only Claims as if they were Product Only
Patents, notwithstanding their presentation in a Product Related Patent.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	56

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

9.1.3.     Preparation,
Filing, Prosecution and Maintenance of Other Patents. Except as otherwise expressly set forth in this Section 9.1, each Party
shall have the sole right (but not the obligation), in its sole discretion, to prepare, file, prosecute and maintain all Patents
owned by such Party; provided, that, Assembly shall keep Allergan reasonably informed regarding the preparation, filing,
prosecution and maintenance of Licensed Compound Patents that are not Product Only Patents or Product Related Patents.

 

9.1.4.     Cooperation
Regarding Prosecution of Patents. Each Party shall cooperate with the other Party to the extent reasonably necessary for such
Party to prosecute the Product Only Patents and/or the Product Related Patents in the Territory, including the execution and delivery
of documents to such Prosecuting Party at such other Party’s cost and expense, including providing access to relevant documents
(including laboratory notebooks) and other evidence and making its employees available at reasonable business hours.

 

9.1.5.     Enforcement
of Product Only Patents.

 

(a)     Each
Party shall provide to the other Party prompt written notice of any actual or threatened infringement of any Product Only Patent
or Product Only Claim in the Territory of which such Party becomes aware.

 

(b)     Allergan
shall have the first right to enforce Product Only Patents and Product Only Claims against actual or potential infringers in the
Field, including as a defense or counterclaim in connection with any Third Party Infringement Claim, at its sole cost and expense,
using counsel of its choice. If Allergan fails to take commercially reasonable steps to prosecute or settle the infringement of
a Product Only Patent or Product Only Claim within ninety (90) days of receiving a notice with respect to such infringement pursuant
to Section 9.1.5(a) (or twenty-five (25) days in the case of an action brought under the Biologics Price Competition and Innovation
Act of 2009 (or any amendment or successor statute thereto) or within ten (10) Business Days before the time limit, if any, under
applicable Law for taking any action with respect to the timeframe of any other relevant regulatory or statutory framework that
may govern), or earlier notifies Assembly in writing of its intent not to bring such action or proceeding, Assembly may enforce
the Product Only Patents and Product Only Claims unless Allergan notifies Assembly of a strategic rationale in good faith for non-enforcement.
Any strategic rationale will be considered as made in good faith by Allergan if such strategic rationale is for any reason other
than to avoid or reduce any payments payable to Assembly as set forth in ARTICLE 7.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	57

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(c)     Assembly
and its Affiliates shall (i) use Commercially Reasonable Efforts to negotiate the terms of the enforcement rights in any license
agreement with a Third Party that includes rights to a Product Only Patent or Product Only Claim such that the enforcement rights
granted to Assembly permit Allergan to exercise its enforcement rights set forth in Section 9.1.5(b) in respect of such Product
Only Patent or Product Only Claim and (ii) (A) keep Allergan reasonably informed, on a prompt basis, of the status and details
of any discussions or negotiations with such Third Party in respect of such Product Only Patent or Product Only Claim, (B) promptly
furnish to Allergan copies of all draft documentation relating to the terms of any agreement in respect of the such Product Only
Patent or Product Only Claim, (C) provide Allergan with a reasonable opportunity to review and comment on such draft documentation
relating to the terms of any agreement in respect of such Product Only Patent or Product Only Claim and (D) implement all reasonable
modifications suggested thereto by Allergan. Without limiting the foregoing, Assembly and its Affiliates shall not enter into any
agreement with a Third Party pursuant to which it acquires rights to a Product Only Patent or Product Only Claim under which enforcement
rights granted to Assembly with respect to such Product Only Patent or Product Only Claim restrict Allergan from fully exercising
its enforcement rights set forth in Section 9.1.5(b) in respect of such Product Only Patent or Product Only Claim, without the
prior written consent of Allergan.

 

9.1.6.      Enforcement
of Product Related Patents.

 

(a)     Each
Party shall provide to the other Party prompt written notice of any actual or threatened infringement of any Product Related Patent
in the Territory of which such Party becomes aware.

 

(b)     Subject
to Section 9.1.5, with respect to the claims of any Product Related Patent (i) that Cover a Competing Compound and are in the same
patent family (that is, are based on the same specification) as a Product Only Patent that Covers a Competing Compound or (ii)
that Cover a Competing Compound, but do not recite a [* * *], Allergan shall have the first right to enforce such claims against
actual or potential infringers Exploiting Competing Compounds in the Field only with Assembly’s prior written consent, which
consent shall not be unreasonably withheld, conditioned or delayed. If Allergan elects not to enforce any such Product Related
Patent against a Competing Compound, Assembly may enforce such Product Related Patent.

 

(c)     Subject
to Section 9.1.5, with respect to any Product Related Patent not described in Section 9.1.6(b), Allergan shall have the right to
enforce such Product Related Patent(s) against infringers Exploiting Competing Compounds in the Field with Assembly’s prior
written consent; provided, that, if Assembly objects to such enforcement by Allergan within five (5) business days of Allergan’s
request for consent, then the following procedures shall apply (for the avoidance of doubt, the dispute resolution procedures set
forth in Sections 10.4 and 13.4 shall not apply):

 

(i)     The
matter shall be referred to the Joint Patent Committee, which shall consider and balance the interests of, and potential harm to,
Allergan, on the one hand, and Assembly and other licensees, if any, of such Product Related Patent(s), on the other hand, in the
event of enforcement or non-enforcement of such Product Related Patent(s);

 

(ii)     If
the Joint Patent Committee cannot resolve the matter by consensus within ten (10) Business Days, or such other time as determined
by Allergan and Assembly, then the Joint Patent Committee shall escalate the matter to each of the general counsels of Allergan
and Assembly for resolution; and

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	58

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(iii)        If
the general counsels of Allergan and Assembly cannot resolve the matter within ten (10) Business Days, or such other time as determined
by Allergan and Assembly, then Allergan shall have the final decision on such matter; provided, that, to the extent Allergan
seeks to enforce such Product Related Patent(s), Allergan shall take into consideration Assembly’s business and other interests,
and shall use reasonable efforts to minimize any potential adverse impact to Assembly or its other licensees of such Product Related
Patent resulting from enforcement of such Product Related Patent(s); provided, further, that if Allergan elects not to enforce
any such Product Related Patent against a Competing Compound, Assembly may enforce such Product Related Patent.

 

(d)     The
time periods set forth in Section 9.1.6(c) shall be shortened to the extent necessary to meet deadlines required by applicable
Law.

 

(e)     Assembly
and its Affiliates shall not enter into any agreement with a Third Party that includes enforcement rights in respect of Product
Related Patents that are more favorable to such Third Party than the comparable provisions set forth herein are with respect to
Allergan.

 

(f)     Assembly
and its Affiliates shall (i) use good faith efforts to negotiate the terms of the enforcement rights in any license agreement with
a Third Party that includes rights to a Product Related Patent such that the enforcement rights granted to Assembly permit Allergan
to exercise its enforcement rights set forth in Section 9.1.6(b) and 9.1.6(c) in respect of such Product Related Patent and (ii)
(A) keep Allergan reasonably informed, on a prompt basis, of the status and details of any discussions or negotiations with such
Third Party in respect of such Product Related Patent, (B) promptly furnish to Allergan copies of all draft documentation relating
to the terms of any agreement in respect of the such Product Related Patent, (C) provide Allergan with a reasonable opportunity
to review and comment on such draft documentation relating to the terms of any agreement in respect of such Product Related Patent
and (D) implement all reasonable modifications suggested thereto by Allergan. Assembly and its Affiliates shall not enter into
any agreement with a Third Party in respect of a Product Related Patent pursuant to which such enforcement rights granted to Assembly
restrict Allergan from exercising its enforcement rights set forth in Section 9.1.6(b) and 9.1.6(c) in respect of such Product
Related Patent, without the prior written consent of Allergan, which consent shall not be unreasonably withheld, conditioned or
delayed; provided, that, Allergan’s consent shall not be required to the extent such agreement grants Assembly a license
to such Product Related Patent solely on a non-exclusive basis.

 

9.1.7.      Enforcement
of Other Patents. Except as otherwise expressly set forth in this Section 9.1, each Party shall have the sole right (but not
the obligation), in its sole discretion, to enforce Patents owned by such Party; provided, that, Assembly shall keep Allergan
reasonably informed regarding the enforcement of Licensed Compound Patents that are not Product Only Patents and Product Related
Patents.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	59

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

9.1.8.      Cooperation
Regarding Enforcement of Patents. The Parties shall cooperate fully in any enforcement action pursuant to this Section 9.1,
including by making the inventors, applicable records, and documents (including laboratory notebooks) with respect to the relevant
Patents available to the enforcing Party and its advisors at the enforcing Party’s request. The non-enforcing Party shall,
and shall cause its Affiliates to, assist and cooperate with the enforcing Party, as the enforcing Party may reasonably request
from time to time, in connection with its activities set forth in this Section 9.1, including, where necessary, joining in, or
being named as a necessary party to, such action, providing access to relevant documents and other evidence, making its employees
available at reasonable business hours, and executing any settlement agreement as requested by the enforcing Party; provided,
that, the enforcing Party shall reimburse the non-enforcing Party for its reasonable and verifiable out-of-pocket costs and expenses
incurred in connection therewith. Unless otherwise set forth herein, the enforcing Party shall have the right to settle such claim;
provided, that, neither Party shall have the right to settle any litigation or claim under this Section 9.1 in a manner
that (a) imposes any costs or liability on the other Party or its Affiliates or its or their sublicensees, (b) involves any admission
by the other Party or its Affiliates or its or their sublicensees, (c) admits the invalidity or unenforceability of intellectual
property owned by a Party or its Affiliates or its or their sublicensees, or (d) imposes restrictions or obligation on the other
Party or its Affiliates or its or their sublicensees not otherwise permitted under this Agreement, in each case ((a) through (d)),
without the express written consent of such other Party, which consent shall not be unreasonably withheld, conditioned or delayed.
In connection with any activities with respect to an action prosecuted by the applicable enforcing Party pursuant to this Section
9.1 involving Patents Controlled by or licensed under this Agreement to the other Party, the enforcing Party shall keep the non-enforcing
Party reasonably informed of any material steps taken in connection with such action.

 

9.1.9.      Enforcement
of Biosimilars.

 

(a)     Patent
Exclusivity Listing.  If either Party receives a copy of an application submitted to the FDA under subsection (k) of Section
351 of the Public Health Service Act (a “Biosimilar Application”) naming a Licensed Product as a reference
product or otherwise becomes aware that such a Biosimilar Application has been filed (including by the receipt of information disclosed
pursuant to Section 351(l)(2) of the Public Health Service Act, or in an instance described in Section 351(l)(9)(C) of the Public
Health Service Act), either Party shall, within ten (10) Business Days, notify the other Party so that the other Party may seek
permission to view the application and related confidential information from the filer of the Biosimilar Application under Section
351(l)(1)(B)(iii) of the Public Health Service Act.  If either Party receives any equivalent or similar certification or notice
in any other jurisdiction in the Territory naming a Licensed Product, either Party shall, within ten (10) Business Days, notify
and provide the other Party with copies of such communication.  Regardless of the Party that is the “reference product
sponsor” for purposes of such Biosimilar Application, (i) Allergan shall have the sole right to designate pursuant to Section
351(l)(1)(B)(ii) of the Public Health Service Act the outside counsel and in-house counsel who shall receive confidential access
to the Biosimilar Application, (ii) Allergan shall have the sole right to (A) list any Licensed Compound Patents, Joint Patents,
and any other Patents, as required pursuant to Section 351(l)(3)(A), Section 351(l)(5)(b)(i)(II), or Section 351(l)(7) of the Public
Health Service Act, (B)  respond to any communications with respect to such lists from the filer of the Biosimilar Application,
and (C) negotiate with the filer of the Biosimilar Application as to whether to utilize a different mechanism for information exchange
than that specified in Section 351(l) of the Public Health Service Act; and (iii) Allergan shall have the sole right to identify
Licensed Compound Patents, Joint Patents, and any other Patents,  and to respond to communications under any equivalent or
similar listing in any other jurisdiction in the Territory.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	60

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(b)     Conduct
of Patent Litigation Under the Biologics Price Competition and Innovation Act.  Allergan shall have the right to bring
an action for infringement of Product Only Patents, Product Related Patents, and Joint Patents, to the extent set forth in Sections
9.1.5 and 9.1.6 of this Agreement, with respect to Licensed Products as required under Section 351(l)(6) of the Public Health Service
Act following the agreement on a list of patents for litigation under Section 351(l)(4) or exchange of Patent lists pursuant to
Section 351(l)(5)(B) of such act, or as required following any equivalent or similar certification or notice in any other jurisdiction. 
Either Party shall, within ten (10) Business Days, notify and provide the other Party with copies of any notice of commercial marketing
provided by the filer of a Biosimilar Application pursuant to Section 351(l)(8)(A) of the Public Health Service Act, or any equivalent
or similar certification or notice in any other jurisdiction. 

 

9.1.10.     Recoveries.
Except as otherwise agreed by the Parties in writing, any recovery realized as a result of enforcing a Patent under this
Section 9.1 (whether by way of settlement or otherwise) shall be first allocated to reimburse the Parties for their costs and expenses
in making such recovery (which amounts shall be allocated pro rata if insufficient to cover the totality of such expenses). Any
remainder after such reimbursement is made shall be retained by (or paid to) Allergan and treated as Net Sales under this Agreement
except for the purposes of Section 7.2.2.

 

9.2.       Invalidity
or Unenforceability Actions.

 

9.2.1.     Notice.
Each Party shall promptly notify the other Party in writing of any alleged or threatened assertion of invalidity or unenforceability,
including any inter partes review, post-grant review, reexamination, opposition or any other similar action before a patent office,
of any of the Licensed Compounds Patents by a Third Party of which such Party becomes aware (an “Invalidity/Unenforceability
Action”).

 

9.2.2.     Control
of Invalidity or Unenforceability Actions. The Party that is prosecuting the Licensed Compounds Patent that is the subject
of an Invalidity/Unenforceability Action (the “Prosecuting Party”) with respect to a Patent shall have
the first right (but not the obligation) to defend any Invalidity/Unenforceability Action with respect to such Patent, using counsel
of its choice and at its sole cost and expense, including when such Invalidity/Unenforceability Action is raised as a defense or
counterclaim in connection with an infringement action initiated pursuant to Section 9.1. The Party having the first right to defend
an Invalidity/Unenforceability Action with respect to a Patent pursuant to this Section 9.2.2 shall be the “Controlling
Party.” If the Controlling Party does not take commercially reasonable steps to defend against an Invalidity/Unenforceability
Action by the earlier of (w) ninety (90) days after notice of such Invalidity/Unenforceability Action, and (x) ten (10) Business
Days before the time limit, if any, under applicable Law for taking any action with respect to the defense of such Invalidity/Unenforceability
Action, then (y) such Party shall so notify the non-Controlling Party and (z) the non-Controlling Party shall have the right (but
not the obligation) to defend against such Invalidity/Unenforceability Action at its sole cost and expense, using counsel of its
choice, and shall thereafter be deemed the Controlling Party with respect to such Invalidity/Unenforceability Action. The non-Controlling
Party may participate in the defense of any Invalidity/Unenforceability Action, at its sole cost and expense and using counsel
of its choice; provided, that, the Controlling Party shall retain the right to control the defense of such Invalidity/Unenforceability
Action.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	61

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

9.2.3.     Cooperation.
The Parties shall cooperate fully in defense of any Invalidity/Unenforceability Action pursuant to this Section 9.2, including
by making applicable records and documents (including laboratory notebooks) with respect to the relevant Invalidity/Unenforceability
Action available to the Controlling Party on the Controlling Party’s request. The non-Controlling Party shall, and shall
cause its Affiliates to, assist and cooperate with the Controlling Party, as the Controlling Party may reasonably request from
time to time, in connection with its activities set forth in this Section 9.2, including, where necessary, joining in, or being
named as a necessary party to, such action, providing access to relevant documents and other evidence, and making its employees
available at reasonable business hours, and executing any settlement agreement as requested by the Controlling Party; provided,
that the Controlling Party shall reimburse the non-Controlling Party for its reasonable and verifiable out-of-pocket costs and
expenses incurred in connection therewith. Unless otherwise set forth herein, the Controlling Party shall have the right to settle
an Invalidity/Unenforceability Action; provided, that, neither Party shall have the right to settle any Invalidity/Unenforceability
Action under this Section 9.2 in a manner that imposes any costs or liability on, or involves any admission of infringement or
invalidity by, the other Party or its Affiliates or its or their sublicensees, without the express written consent of such other
Party (which consent shall not be unreasonably withheld, conditioned or delayed). In connection with any activities with respect
to defense of an Invalidity/Unenforceability Action, the Controlling Party shall (a) consult with the non-Controlling Party as
to the strategy for the defense of such Invalidity/Unenforceability Action, (b) consider in good faith any comments from the non-Controlling
Party with respect thereto, and (c) keep the non-Controlling Party reasonably informed of any material steps taken, and provide
copies of all material documents filed, in connection with such action.

 

9.3.       Infringement
Claims by Third Parties.

 

9.3.1.     Notice.
If the Exploitation of a Licensed Product in the Territory pursuant to this Agreement results in, or is reasonably expected to
result in, any claim, suit or proceeding by a Third Party alleging infringement by Allergan or any of its Affiliates or its or
their Sublicensees, distributors or customers (a “Third Party Infringement Claim”), including any defense
or counterclaim in connection with an infringement action initiated pursuant to Section 9.1, the Party first becoming aware of
such alleged infringement shall promptly notify the other Party thereof in writing.

 

9.3.2.     Defense
of Third Party Infringement Claims. Allergan shall have the first right (but not the obligation) to defend against any Third
Party Infringement Claim at its sole cost and expense, using counsel of its choice. The Party having the right under this Section
9.3.2 to defend against a Third Party Infringement Claim shall be the “Defending Party”. If Allergan
does not take commercially reasonable steps to defend against a Third Party Infringement Claim by the earlier of (w) ninety (90)
days after notice of such Third Party Infringement Claim, and (x) ten (10) Business Days before the time limit, if any, under applicable
Law for taking any action with respect to the defense of such Third Party Infringement Claim, then (y) Allergan shall so notify
Assembly and (z) Assembly shall have the right (but not the obligation) to defend against such Third Party Infringement Claim at
its sole cost and expense, using counsel of its choice, and shall thereafter be deemed the Defending Party with respect to such
Third Party Infringement Claim. The non-Defending Party may participate in the defense of any Third Party Infringement Claim, at
its sole cost and expense and using counsel of its choice; provided, that, the Defending Party shall retain the right to
control the defense of such Third Party Infringement Claim.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	62

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

9.3.3.     Cooperation.
The Parties shall cooperate fully in defense of any Third Party Infringement Claim pursuant to this Section 9.3, including by making
applicable records and documents (including laboratory notebooks) with respect to the relevant Third Party Infringement Claim available
to the Defending Party on the Defending Party’s request. The non-Defending Party shall, and shall cause its Affiliates to,
assist and cooperate with the Defending Party, as the Defending Party may reasonably request from time to time, in connection with
its activities set forth in this Section 9.3, including, where necessary, joining in, or being named as a necessary party to, such
action, providing access to relevant documents and other evidence, and making its employees available at reasonable business hours,
and executing any settlement agreement as requested by the Defending Party; provided, that, the Defending Party shall reimburse
the non-Defending Party for its reasonable and verifiable out-of-pocket costs and expenses incurred in connection therewith. Unless
otherwise set forth herein, the Defending Party shall have the right to settle a Third Party Infringement Claim; provided,
that, neither Party shall have the right to settle any Third Party Infringement Claim under this Section 9.3 in a manner that imposes
any costs or liability on, or involves any admission (other than an admission limited to the subject matter of the settlement agreement)
by, the other Party or its Affiliates or its or their sublicensees, without the express written consent of such other Party (which
consent shall not be unreasonably withheld, conditioned or delayed). In connection with any activities with respect to defense
of a Third Party Infringement Claim, the Defending Party shall (a) consult with the non-Defending Party as to the strategy for
the defense of such Third Party Infringement Claim, (b) consider in good faith any comments from the non-Defending Party with respect
thereto, and (c) keep the non-Defending Party reasonably informed of any material steps taken, and provide copies of all material
documents filed, in connection with such action.

 

9.4.       Damages.
Any damages or other awards, including royalties, incurred in connection with any Third Party Infringement Claim defended by Allergan
under Section 9.3 shall be for the sole account of Allergan, subject to and without prejudice to Allergan’s rights under
Section 7.4.3 and ARTICLE 12.

 

9.5.       Conflicts
with Existing In-License Agreements. The Parties acknowledge that the Existing In-License Agreements may not permit
Allergan to directly exercise any of its rights under Sections 9.1 through 9.3 with respect to the Patents licensed to Assembly
thereunder. Without limiting any other provision of this Agreement, in the event that the terms of any other In-License Agreement
prohibits Allergan from directly exercising any of its rights under Sections 9.1 through 9.3 with respect to any Patents licensed
to Assembly thereunder,  (a) Assembly shall so notify Allergan promptly after entering into any such In-License Agreement
(such In-License Agreement, along with the Existing In-License Agreement, the “Restricted In-License Agreements”),
(b) unless Allergan otherwise specifies, Assembly shall act as Allergan’s agent and shall conduct all activities under the
Restricted In-License Agreements to exercise all applicable rights under the Restricted In-License Agreements on Allergan’s
behalf as required to provide Allergan with all rights to which Allergan is entitled pursuant to Sections 9.1 through 9.3, at Allergan’s
sole direction, and shall take all other actions necessary to provide Allergan with the full benefit of Sections 9.1 through 9.3
with respect to the Patents licensed under the Restricted In-License Agreements, in all cases to the extent Assembly has sufficient
rights under the applicable Restricted In-License Agreement, and subject to reimbursement by Allergan of Assembly’s reasonable
out-of-pocket costs and expenses incurred in connection therewith, (c) Assembly shall not terminate, waive or amend any rights
under an In-License Agreement required for Assembly to act as Allergan’s agent pursuant to the preceding sentence, (d) all
activities conducted by Assembly on Allergan’s behalf pursuant to this Section 9.1 shall be deemed to have been conducted
by Allergan for the purposes of this Agreement, including Section 9.1.10 and (e) at Allergan’s request, Assembly shall use
Commercially Reasonable Efforts to amend the terms of any In-License Agreement to permit Allergan itself to directly exercise its
rights under Section 9.1, 9.2 or 9.3.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	63

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

9.6.       Ownership
of IP.  Subject to the licenses and other rights granted herein and subject to Section 9.9, as between the Parties,
each Party shall own and retain all right, title and interest in and to any and all Know-How, improvements and other inventions
that are conceived, discovered, developed or otherwise made by or on behalf of such Party (or its Affiliates or its or their sublicensees
(including Sublicensees)) under or in connection with this Agreement, whether or not patented or patentable and any and all Patents
and other intellectual property rights with respect thereto.

 

9.7.       Ownership
of Joint Intellectual Property Rights. Subject to the licenses and other rights granted herein, as between the Parties, the
Parties shall each own an equal, undivided interest in any and all: (a) Know-How, information and other inventions that are conceived,
discovered, developed or otherwise made jointly by or on behalf of Assembly or its Affiliates or its or their sublicensees, on
the one hand, and Allergan or its Affiliates or its or their Sublicensees, on the other hand, in connection with the work conducted
under or in connection with this Agreement, whether or not patented or patentable (the “Joint Know-How”);
and (b) Patents (the “Joint Patents”) and other intellectual property rights with respect to the Know-How,
improvements and inventions described in clause (a) (together with Joint Know-How and Joint Patents, the “Joint Intellectual
Property Rights”). Each Party shall promptly disclose to the other Party in writing and shall cause its Affiliates,
and its and their licensees and sublicensees to so disclose, the Development, making, conception or reduction to practice of any
Joint Know-How or Joint Patents. Subject to the licenses granted under Sections 2.1 and 2.2 and the other provisions of this Agreement,
including the Parties’ respective exclusivity obligations hereunder, each Party shall have the right to Exploit the Joint
Intellectual Property Rights without a duty of seeking consent or accounting to the other Party.

 

9.8.       United
States Law. The determination of whether Know-How, improvements and other inventions are conceived, discovered, developed
or otherwise made by a Party for the purpose of allocating proprietary rights (including Patent, copyright or other intellectual
property rights) therein, shall, for purposes of this Agreement, be made in accordance with applicable Law in the USA as such law
exists as of the Effective Date irrespective of where or when such conception, discovery, development or making occurs.
Each Party shall, and does hereby, assign, and shall cause its Affiliates to, and use good faith efforts to cause its and their
(sub)licensees and Sublicensees to, so assign, to the other Party, without additional compensation, such right, title and interest
in and to any Know-How, improvements and other inventions as well as any intellectual property rights with respect thereto, as
is necessary to fully effect, as applicable, the joint ownership provided for in Sections 9.7.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	64

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

9.9.        Assignment
Obligation.  Each Party shall use commercially reasonable efforts to cause all Persons who perform Development
activities, manufacturing activities or regulatory activities for such Party under this Agreement or who conceive, discover, develop
or otherwise make any Know-How, improvement or inventions by or on behalf of either Party or its Affiliates or its or their sublicensees
under or in connection with this Agreement to be under an obligation to assign (or, if such Party is unable to cause such Person
to agree to such assignment obligation despite such Party’s using commercially reasonable efforts to negotiate such assignment
obligation, to use commercially reasonable efforts to provide an exclusive license under) their rights in any Know-How, improvement
and inventions resulting therefrom to such Party, to the extent such Know-How, improvements and inventions are related to Licensed
Compounds or Licensed Products except where applicable Law requires otherwise. If applicable Law prohibits a Party from securing
such assignment or exclusive license and the other Party requests that such Party obtain any such assignment or exclusive license,
such other Party shall use commercially reasonable efforts to obtain any such assignment or exclusive license; provided,
that if any such assignment or exclusive license cannot be obtained with respect to any such Know-How, improvement and inventions,
at such other Party’s request, such Party shall, and shall cause its Affiliates to, use commercially reasonable efforts to
obtain for such other Party equivalent rights with respect to such Know-How, improvement and inventions to the extent applicable
to the Licensed Products, including by entering into appropriate and reasonable alternative arrangements on terms reasonably agreed
to by the Parties except in the case of governmental, not-for-profit and public institutions that have standard policies against
such an assignment (in which case a suitable license, or option to obtain such a license, shall be obtained).

 

9.10.       Patent
Term Extension and Supplementary Protection Certificate. Allergan shall have the sole right to make decisions regarding,
and Allergan shall have the sole right to apply for, patent term extensions, in the Territory, including the United States with
respect to extensions pursuant to 35 U.S.C. § 156 et. seq. and in other jurisdictions pursuant to supplementary protection
certificates, and in all jurisdictions with respect to any other extensions that are now or become available in the future, wherever
applicable, for Product Only Patents and Product Related Patents with respect to the Licensed Compounds and the Licensed Products,
in each case including whether or not to so apply; provided, that, Allergan shall consult with Assembly to determine the
course of action with respect to such filings. Any Product Related Patent, the term of which is extended under this Section 9.6,
shall, as of the date the extension is granted, be a Product Only Patent for all purposes under this Agreement. Assembly shall
provide prompt and reasonable assistance, as requested by Allergan, including by taking such action as is required of the Regulatory
Approval holder under any applicable Law to obtain such extension or supplementary protection certificate.

 

9.11.       Trademarks
for Licensed Product.

 

9.11.1.     Ownership.
Allergan shall be solely responsible for developing, selecting, searching, registering and maintaining, and shall be the exclusive
owner of, all Product Trademarks, trade dress, logos, slogans, designs, copyrights and domain names used on and/or in connection
with Licensed Products, together with all goodwill associated with, or symbolized by, any of the foregoing.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	65

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

9.11.2.     Notice.
Each Party shall provide to the other Party prompt written notice of any actual or threatened infringement of the Product Trademarks
in the Territory and of any actual or threatened claim that the use of the Product Trademarks in the Territory violates the rights
of any Third Party, in each case, of which such Party becomes aware.

 

9.11.3.     Prosecution
of Product Trademarks. Allergan shall have the sole right to register, prosecute and maintain the Product Trademarks
using counsel of its own choice.  All costs and expenses of registering, prosecuting and maintaining the Product Trademarks
shall be borne solely by Allergan.

 

9.11.4.     Enforcement
of Product Trademarks. Allergan shall have the sole right to take such action as Allergan deems necessary against a Third Party
based on any alleged, threatened or actual infringement, dilution, misappropriation or other violation of or unfair trade practices
or any other like offense relating to, the Product Trademarks by a Third Party in the Territory at its sole cost and expense and
using counsel of its own choice. Allergan shall retain any damages or other amounts collected in connection therewith.

 

9.11.5.     Third
Party Claims. Allergan shall have the sole right to defend against and settle any alleged, threatened or actual claim by a
Third Party that the use or registration of the Product Trademarks in the Territory infringes, dilutes, misappropriates or otherwise
violates any Trademark or other right of that Third Party or constitutes unfair trade practices or any other like offense or any
other claims as may be brought by a Third Party against a Party in connection with the use of the Product Trademarks with respect
to a Licensed Product in the Territory at its sole cost and expense and using counsel of its own choice. Allergan shall retain
any damages or other amounts collected in connection therewith.

 

9.11.6.     Cooperation.
Assembly shall, and shall cause its Affiliates to, assist and cooperate with Allergan, as Allergan may reasonably request from
time to time, in connection with its activities set forth in this Section 9.7.6, including where necessary, joining in, or being
named as a necessary party to, such action, providing access to relevant documents and other evidence and making its employees
available at reasonable business hours; provided, that Allergan shall reimburse Assembly for its reasonable and verifiable
out-of-pocket costs and expenses incurred in connection therewith.

 

ARTICLE
10

TERM AND TERMINATION

 

10.1.      Term.
Unless terminated earlier pursuant to this ARTICLE 10, the term of this Agreement shall commence on the Effective Date and shall
continue in full force and effect until (i) the end of the R&D Term, if Allergan is not Developing at least one Licensed Compound
or Licensed Product as of such date or, (ii) if Allergan is Developing at least one (1) Licensed Compound or Licensed Product as
of the end of the R&D Term, then, as determined on a Licensed Product-by-Licensed Product and country-by-country basis, until
the expiration of the Royalty Term for such Licensed Product in such country (the “Term”). Upon expiration
of the Royalty Term, on a Licensed Product-by-Licensed Product, Permitted Indication-by-Permitted Indication and country-by-country
basis, the license granted to Allergan pursuant to Section 2.1 shall become worldwide, fully paid, irrevocable and perpetual. Notwithstanding
anything herein to the contrary, Sections 10.1, 10.7, 10.9, 10.10, 10.11, 10.12 and ARTICLE 13 shall become effective on the Execution
Date.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	66

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

10.2.     Termination
at Will by Allergan. Allergan shall have the right to terminate this Agreement for any reason or no reason, at any time,
on ninety (90) days’ prior written notice to Assembly if such termination occurs prior to the Initiation of the first POC
Trial of a Licensed Product or one hundred and twenty (120) days’ prior written notice if after the Initiation of the first
POC Trial of a Licensed Product.

 

10.3.     Material
Breach. In the event of a material breach of this Agreement, the non-breaching Party shall have the right to terminate this
Agreement in its entirety in each case by written notice to the breaching Party specifying the nature of such breach in reasonable
detail. Such termination shall become effective ninety (90) days from receipt of such notice by the breaching Party, unless the
breaching Party has cured such breach within such ninety (90) period. Notwithstanding the foregoing, such ninety (90)-day cure
period shall be extended for an additional ninety (90) days or such longer period as is reasonably required to cure such breach
if such breach is not a failure to pay amounts due under this Agreement and the breaching Party is employing ongoing, Commercially
Reasonable Efforts to cure such alleged material breach; provided that the non-breaching Party may, pursuant to Sections
10.4 and 13.4, request that an arbiter determine a time period reasonably required for the breaching Party to cure such breach
(which shall not, in any event, be less than ninety (90) days from the receipt of notice of such breach) and, if the breaching
Party does not cure such breach within such determined time period, the termination shall become effective. Notwithstanding the
foregoing, the foregoing applicable cure period shall be tolled upon the commencement and during the conduct of any dispute resolution
initiated by a Party under Section 10.4 or Section 13.4 with respect to a Party’s right to terminate this Agreement pursuant
to this Section 10.3 if the other Party initiates such a dispute resolution procedure before the end of the applicable cure period.

 

10.4.     Material
Breach Dispute Resolution. Notwithstanding anything to the contrary herein, any (a) dispute with respect to a Party’s
right to terminate this Agreement pursuant to Section 10.3 and (b) demand by a non-breaching Party for an arbiter to determine
a time period reasonably required for the breaching Party to cure such breach under Section 10.3 shall be resolved as follows:

 

10.4.1.     the
Senior Officers will meet to attempt to resolve the dispute by good faith negotiations. If the Senior Officers cannot resolve the
dispute within thirty (30) days after a Party requests such a meeting, then either Party may initiate an arbitration pursuant to
Section 13.4; and

 

10.4.2.     notwithstanding
anything to the contrary in this Agreement, if either Party in its sole judgment believes that any such dispute could cause it
irreparable harm, such Party shall be entitled to seek equitable relief in order to avoid such irreparable harm and will not be
required to follow the procedures set forth in this Section 10.4.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	67

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

10.5.     Termination
for Patent Challenge. If Allergan (A) commences or actively, directly and voluntarily participates in any action or proceeding
(including any patent opposition or re-examination proceeding), or otherwise asserts any claim, challenging or denying the validity
or enforceability of any claim of any Licensed Compound Patent that is licensed to Allergan under this Agreement or (B) actively,
directly and voluntarily assists any other person or entity in bringing or prosecuting any action or proceeding (including any
patent opposition or re-examination proceeding) challenging or denying the validity or enforceability of any claim of any such
Licensed Compound Patent (each of (A) and (B), a “Patent Challenge”), then Assembly shall have the right,
in its sole discretion, to give notice to Allergan that Assembly may terminate the licenses granted under such Licensed Compound
Patents to Allergan ninety (90) days following such notice, and, unless Allergan withdraws or causes to be withdrawn all such challenge(s)
or in the case of ex-parte proceedings, multi-party proceedings, or other Patent Challenges that Allergan does not have
the power to unilaterally withdraw or cause to be withdrawn, Allergan ceases assisting any other party to such Patent Challenge
and, to the extent Allergan is a party to such Patent Challenge, it withdraws from such Patent Challenge within such ninety (90)
day period, Assembly shall have the right to terminate this Agreement by providing written notice thereof to Allergan. The foregoing
right to terminate shall not apply where the Patent Challenge is the assertion of a defense or counterclaim to an action first
brought by Assembly against Allergan. For the avoidance of doubt, any participation by Allergan or its employees in any claim,
challenge or proceeding in response to a subpoena or as required under a pre-existing agreement between Allergan’s employee(s)
or consultant(s) and their prior employer(s) shall not constitute active and voluntary participation or assistance and shall not
give rise to Assembly’s right to terminate any license hereunder.

 

10.6.     Termination
for Insolvency.

 

10.6.1.     Either
Party may terminate this Agreement in its entirety effective immediately upon written notice to the other Party if, at any time
such other Party (a) files in any court or agency pursuant to any statute or regulation of any state or country a petition in bankruptcy
or insolvency or for reorganization (except for solvent reorganization or solvent reconstruction) or for an arrangement or for
the appointment of a receiver or trustee of the Party or of substantially all of its assets, (b) proposes a written agreement of
composition or extension of substantially all of its debts, (c) is served with an involuntary petition against it, filed in any
insolvency proceeding, and such petition is not be dismissed within ninety (90) days after the filing thereof, (d) proposes to
be a party to any dissolution or liquidation, (e) admits in writing its inability generally to meet its obligations as they fall
due in the general course or (f) makes an assignment of substantially all of its assets for the benefit of creditors.

 

10.6.2.     All
rights and licenses granted under or pursuant to any section of this Agreement are for purposes of Section 365(n) of Title 11,
United States Code or any analogous provisions in any other country or jurisdiction (the “Bankruptcy Code”)
licenses of rights to “intellectual property” as defined in Section 101(56) of the Bankruptcy Code (and any equivalent
provisions under the bankruptcy or insolvency laws of any other relevant jurisdiction). The Parties shall retain and may fully
exercise all of their respective rights and elections under the Bankruptcy Code. The non-bankrupt Party shall further be entitled
to a complete duplicate of, or complete access to, any such intellectual property and all embodiments of such intellectual property,
which, if not already in its possession, shall be promptly delivered to the non-bankrupt Party (a) upon the commencement of
a bankruptcy proceeding upon the non-bankrupt Party’s written request therefor, unless the Party subject to such proceeding
elects to continue to perform all of its obligations under this Agreement or (b) if not delivered under clause (a) above,
following the rejection of this Agreement by or on behalf of the Party subject to such proceeding upon written request therefor
by the non-bankrupt Party.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	68

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

10.7.     Termination
for Failure or Delay to obtain HSR Clearance. This Agreement shall terminate upon (a) notice given by one Party to the
other Party if the HSR Clearance is not obtained within one hundred eighty (180) days after the Execution Date and such Party delivers
notice of termination within ten (10) Business Days after the end of such one hundred eighty (180)-day period or (b) notice given
by Allergan to Assembly if (i) the Parties receive a request for information or documentary material pursuant to the HSR Act or
(ii) the FTC or the Antitrust Division of the DOJ shall have commenced, the staff of the FTC or the Antitrust Division of the DOJ
recommends commencing, or the FTC votes to commence, in each case any action (A) challenging or seeking to restrain, prohibit,
prevent, enjoin, alter or delay the transactions contemplated by this Agreement or (B) seeking to impose any of the restrictions
described in Section 13.13.2.

 

10.8.     Effect
of Expiration or Termination of this Agreement.

 

10.8.1.     Accrued
Obligations. Except as provided in Section 10.8.3, upon expiration or termination of this Agreement for any reason, neither
Party shall be released from any obligation or liability that, at the time of such expiration or the Termination Date, has already
accrued to the other Party or that is attributable to a period prior to such expiration or the Termination Date.

 

10.8.2.     
In-Process Clinical Trials. Notwithstanding any other provision in this Section 10.8, if there are any Clinical Trials being
conducted at the Termination Date, Allergan shall have the right and obligation to continue such Clinical Trials to the extent
and for the period necessary to effect an orderly transfer or wind down of such Clinical Trials, at Assembly’s election,
in a timely manner and in accordance with applicable Laws.

 

10.8.3.     Milestone
Payments. Allergan shall remain liable to pay (a) any Sales Milestone Payments that have become due for payment and (b) Royalty
Payments on Net Sales booked by Allergan (in accordance with GAAP), in each case (a) and (b) on or before the Termination Date.
If Allergan provides notice of termination pursuant to Section 10.2 or 10.6, no Milestone Payments shall be due on Development
Milestone Events that occur after the date on which the notice of termination is first delivered to Assembly unless the Agreement
is not terminated under Section 10.6 due to a dismissal of a petition within ninety (90) days after the filing. If Allergan provides
notice of termination pursuant to Section 10.3, no Milestone Payments shall be due on Development Milestone Events that occur after
the date on which the notice of termination is first delivered to Assembly unless (a) Allergan elects to exercise its rights under
Section 10.9, in which case Milestone Payments due on Development Milestone Events shall be payable but reduced according to Section
10.9 or (b) Assembly cures the breach subject to the termination notice within the time period specified or determined in accordance
with Section 10.3.

 

10.8.4.     Termination
of the Agreement. In addition to the rights and obligations of the Parties that survive a termination of this Agreement pursuant
to Sections 10.8.1, 10.8.2 and 10.12, on any termination of this Agreement:

 

(a)     except
as otherwise expressly provided herein, all rights and obligations of each Party hereunder will cease with respect to all Licensed
Compounds or Licensed Products, including all rights, licenses and sublicenses granted by a Party to the other hereunder, provided,
that ARTICLE 7 will survive with regard to any then outstanding payment obligations;

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	69

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(b)     Allergan’s
rights with respect to the Licensed Compound Patents, including Allergan’s patent prosecution, maintenance and enforcement
rights set forth in Section 9.1, shall cease;

 

(c)     With
respect to any Licensed Product that is being Developed (in a Clinical Trial) or Commercialized as of the Termination Date (each,
a “Reversion Product”), Allergan hereby grants Assembly an exclusive, sublicensable (through multiple
tiers of sublicensees) license, throughout the Territory, under the Patents and Know-How Controlled by Allergan or its Affiliates
as of the Termination Date that, absent a license, would be infringed by the Exploitation of the Reversion Product in the form
that it is being clinically Developed or Commercialized as of the Termination Date (collectively, the “Reversion IP”)
to Exploit such Reversion Product; provided, that, in consideration for such license, on a Reversion Product-by-Reversion
Product and country-by-country basis, Assembly or its Affiliates shall pay Allergan a royalty on annual net sales of each Reversion
Product in the Territory as set forth herein. The term “net sales” with respect to such Reversion Products has the
same meaning as “Net Sales” under this Agreement, and such royalty shall be paid in accordance with Sections 7.5, 7.6,
7.7, 7.8, 7.9, 7.10 and 7.11, in each case mutatis mutandis, except as otherwise provided herein.

 

(i)     If
such termination is by Allergan pursuant to Section 10.3, the royalty payable by Assembly to Allergan under this Section 10.8.4
shall be equal to: [* * *]. If such termination is by Allergan pursuant to Section 10.3, the royalty payable by Assembly to Allergan
under this Section 10.8.4 shall be payable until the last to occur of the following events as applicable: (i) the expiration or
termination of the last Patent included in the Reversion IP that Covers the Exploitation of the Reversion Product by Assembly,
its Affiliates or sublicensees, in the relevant country and (ii) (a) for such countries where there is [* * *] or more of Regulatory
Exclusivity, the expiry of Regulatory Exclusivity granted by the applicable Governmental Authority for such Reversion Product in
such country and (b) for such countries in which there is less than [* * *] of Regulatory Exclusivity, [* * *] after the expiration
of such Regulatory Exclusivity for such Reversion Product; provided that if the royalty term for the royalty payable as
set forth in this Section 10.8.4(c)(i) is extended by application of the foregoing clause (ii)(b) then the royalty rate payable
on net sales in any such country under this Section 10.8.4(c)(i) shall be reduced by [* * *] percent ([* * *]%) for the remainder
of the applicable royalty term.

 

(ii)     If
such termination is by Assembly pursuant to Section 10.3, the royalty payable by Assembly to Allergan under this Section 10.8.4
shall be equal to: [* * *] and shall be payable until the first to occur of the following events as applicable: (i) the expiration
or termination of the last Patent included in the Reversion IP that Covers the Exploitation of the Reversion Product by Assembly,
its Affiliates or sublicensees, in the relevant country and (ii) (a) for such countries where there is [* * *] or more of Regulatory
Exclusivity, the expiry of Regulatory Exclusivity granted by the applicable Governmental Authority for such Reversion Product in
such country and (b) for such countries in which there is less than [* * *] of Regulatory Exclusivity, [* * *] after the expiration
of such Regulatory Exclusivity for such Reversion Product; provided that if the royalty term for the royalty payable as
set forth in this Section 10.8.4(c)(ii) is extended by application of the foregoing clause (ii)(b) then the royalty rate payable
on net sales in any such country under this Section 10.8.4(c)(ii) shall be reduced by [* * *] percent ([* * *]%) for the remainder
of the applicable royalty term.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	70

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(iii)        If
such termination is for any reason other than by Allergan or Assembly pursuant to Section 10.3, the royalty payable by Assembly
to Allergan under this Section 10.8.4 shall be equal to [* * *] and shall be payable until the last to occur of the following events
as applicable: (i) the expiration or termination of the last Patent included in the Reversion IP that Covers the Exploitation of
the Reversion Product by Assembly, its Affiliates or sublicensees, in the relevant country and (ii) (a) for such countries where
there is [* * *] or more of Regulatory Exclusivity, the expiry of Regulatory Exclusivity granted by the applicable Governmental
Authority for such Reversion Product in such country and (b) for such countries in which there is less than [* * *] of Regulatory
Exclusivity, [* * *] after the expiration of such Regulatory Exclusivity for such Reversion Product; provided that if the
royalty term for the royalty payable as set forth in this Section 10.8.4(c)(iii) is extended by application of the foregoing
clause (ii)(b) then the royalty rate payable on net sales in any such country under this Section 10.8.4(c)(iii) shall be reduced
by [* * *] percent ([* * *]%) for the remainder of the applicable royalty term.

 

(d)     Allergan
will at Assembly’s request and cost (i) transfer to Assembly any IND and Regulatory Approval (of filing therefor) and Regulatory
Documentation solely related to any Reversion Products, (ii) provide access to Know-How Controlled by Allergan and its Affiliates
that are licensed to Assembly under this Section 10.8.4, and (iii) to the extent owned and possessed by Allergan or its Affiliates,
transfer to Assembly all tangible chemical or biological material embodying the Reversion Products and reasonable quantities of
other Materials Controlled by Allergan and its Affiliates that are licensed to Assembly under Section 10.8.4(c) above; and

 

(e)     Allergan
shall grant Assembly an exclusive, worldwide, sublicensable (through multiple tiers of sublicensees) license under any Product
Trademark (if any) (i) Controlled by Allergan, (ii) that is solely related to the Reversion Product in its form as of the effective
date of termination, (iii) is not a trademark otherwise used in connection with Allergan or its Affiliates’ business or any
other product and (iv) is used by or on behalf of Allergan in the Exploitation of any Reversion Product as of the effective date
of termination exclusively to Exploit a Reversion Product as of the Termination Date; provided, that Allergan shall, at
its or Assembly’s election, instead of granting such exclusive license, transfer such Product Trademark to Assembly.

 

(f)     To
the extent that any Reversion IP is in-licensed by Allergan or any of its Affiliates, any license to Assembly under such Reversion
IP pursuant to this Section 10.8 shall be subject to the terms and conditions of such license and Assembly shall be solely responsible
for any payments (including all royalty, milestone or other payments) to Third Parties with respect to Assembly’s Development,
manufacture, Commercialization or other Exploitation of Reversion Products, including under any agreements Allergan or its Affiliates
may have with such Third Parties. Notwithstanding anything in this Agreement to the contrary, the licenses granted
by Allergan pursuant to this Section 10.8.4 do not include any intellectual property rights relating to compounds that are not
Licensed Compounds.

 

10.9.     Allergan
Option to Continue In-Lieu of Termination. If Allergan has the right to terminate this Agreement under Section 10.3, but does
not desire to exercise such right, Allergan may elect to exercise its rights under this Section 10.9 in lieu of exercising its
right to terminate the Agreement under Section 10.3 by providing written notice of such election to Assembly prior to the date
that otherwise would have been the effective date of termination had Allergan exercised its right under Section 10.3 to terminate
this Agreement. In the event of such an election, the Agreement shall continue in full force and effect except as follows:

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	71

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(a)     if
such right to terminate accrued during the R&D Term, Allergan shall have the right to terminate the R&D Plan, and Allergan
shall have the right to conduct all activities that would otherwise have been conducted by Assembly under the R&D Plan (whether
alone or through one or more Third Parties);

 

(b)     The
JDC shall no longer be a decision-making body with respect to Licensed Compounds and Licensed Products in the Field in the Territory
and Allergan shall have final decision-making authority over matters previously determined by the JDC;

 

(c)     without
limitation of Allergan’s other remedies hereunder, any Milestone Payments or Royalty Payments that are due after Allergan’s
notice of breach shall be reduced by [* * *];

 

(d)     Allergan’s
diligence obligations under Section 4.7.2 shall cease; and

 

(e)     upon
the request of Allergan, Assembly shall, and shall cause its Affiliates to, at Assembly’s cost and expense, provide Allergan
with such assistance as Allergan may reasonably require in order to transfer the ongoing Development, manufacture and Commercialization
of any Licensed Compounds or Licensed Products to Allergan, including providing such assistance as may be necessary or useful for
Allergan to conduct the activities under the R&D Plan as contemplated under this Section 10.9.

 

10.10.     Termination
by Either Party for Failure or Delay to obtain HSR Clearance. If either Party terminates this Agreement pursuant to Section
10.7, then, subject to Section 10.12, this Agreement shall be of no further force or effect.

 

10.11.     Termination
for Failure of Representations. If any of the supplements or amendments to Assembly’s representations and warranties
contemplated under Section 11.6 are, in Allergan’s opinion, reasonably likely to materially diminish any of Allergan’s
rights or materially increase any liabilities of Allergan with respect to any Licensed Compound or Licensed Product, Allergan shall
have the right, in its sole discretion, prior to the expiration of five (5) Business Days following its receipt of any supplement
or amendment from Assembly in accordance with Section 11.6, by written notice to Assembly, to cause this Agreement not to take
effect as of the Effective Date and to be of no further effect. If Allergan exercises such right neither Party shall have any liability
to the other arising out of or in connection with this Agreement.

 

10.12.     Survival.
Upon the expiration or termination of this Agreement for any reason, all rights and obligations of the Parties under this Agreement
shall terminate. Notwithstanding any provision herein to the contrary, the rights and obligations of the Parties set forth in ARTICLE
1 (to the extent necessary to give effect to the other sections listed in this Section 10.12), ARTICLE 8 (until the fifth anniversary
of the termination of this Agreement, except Sections 8.5.1 and 8.6 and except that, upon termination of this Agreement (a) any
Licensed Compound Know-How other than any Joint Know-How that was deemed to be the Confidential Information of Allergan pursuant
to Section 1.39 shall cease to be deemed to be the Confidential Information of Allergan and (b) any such Joint Know-How shall be
deemed to be the Confidential Information of both Parties and each Party shall be free to exploit such Joint Know-How without the
consent of or accounting to the other Party), ARTICLE 9 (to the extent applicable to Joint Know-How and Joint Patents), ARTICLE
12, ARTICLE 13 (except Section 13.13) and Sections 2.5.1, 2.5.2, 4.11 (other than the first sentence), 4.9 (for final accounting),
7.4.3 to 7.12 (for final accounting), ARTICLE 8, 9.1.10, 9.3, 9.4, 10.1, 10.8, 10.13, and this Section 10.12 shall survive the
expiration or termination of this Agreement for any reason, as well as any rights or obligations otherwise accrued hereunder shall
survive the expiration or termination of the term of this Agreement, as well as any other provisions that, by their intent or meaning
under the circumstances, are intended to survive. 

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	72

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

10.13.         Effect
of Termination on Sublicenses. If this Agreement terminates for any reason, any Sublicensee will, from the Termination
Date, automatically and without any additional consideration become a direct licensee of Assembly with respect to the rights sublicensed
to the Sublicensee by Allergan under this Agreement, so long as such Sublicensee is not in breach of its sublicense agreement.
In order to effect this provision, at the request of the Sublicensee, Assembly will enter into a direct license with the Sublicensee
on substantially the same terms as this Agreement (taking into account the scope of the license granted under such sublicense);
provided that Assembly will not be required to undertake obligations in addition to those required by this Agreement, and
that Assembly’s rights under such direct license will be consistent with its rights under this Agreement, taking into account
the scope of the license granted under such direct license. The foregoing shall not apply if a Sublicensee provides written notice
to Assembly that it does not wish to receive and retain the rights afforded to it pursuant to this Section 10.13.

 

ARTICLE
11

REPRESENTATIONS AND WARRANTIES

 

11.1.          Mutual
Representations and Warranties and Covenants. Each of Assembly and Allergan represents and warrants to the other Party,
as of the Execution Date and the Effective Date, and covenants, that:

 

11.1.1.     such
Party is an entity duly organized, validly existing and in good standing under the Laws of the state or country (as applicable)
of its organization, is qualified to do business and is in good standing as a foreign entity in each jurisdiction in which the
conduct of its business or the ownership of its properties requires such qualification and failure to have such would prevent it
from performing its obligations under this Agreement, and has full power and authority to enter into this Agreement and to carry
out the provisions hereof;

 

11.1.2.     such
Party is duly authorized, by all requisite action, to execute and deliver this Agreement and the execution, delivery and performance
of this Agreement by such Party does not require any shareholder action or approval, and the Person executing this Agreement on
behalf of such Party is duly authorized to do so by all requisite action;

 

11.1.3.     except
as contemplated by this Agreement, no consent, approval, order or authorization of, or registration, qualification, designation,
declaration or filing with, any Governmental Authority or a Third Party is required on the part of such Party in connection with
the valid execution, delivery and performance of this Agreement;

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	73

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

11.1.4.     such
Party has not employed (and, to its Knowledge, has not used a contractor or consultant that has employed) and in the future shall
not employ (or, to its Knowledge, use any contractor or consultant that employs, provided, that, such Party may reasonably
rely on a representation made by such contractor or consultant) any Person debarred pursuant to Section 306 of the United States
Federal Food, Drug, and Cosmetic Act (or subject to a similar sanction of EMA or foreign equivalent), or any Person that is the
subject of an FDA debarment investigation or proceeding (or similar proceeding of EMA or foreign equivalent), in the conduct of
its activities under this Agreement and such Party agrees to inform the other Party in writing promptly if it or any such Person
who is performing services hereunder is debarred or is the subject of a conviction described in Section 306 or if any action, suit,
claim, investigation or legal or administrative proceeding is pending or, to the best of its or its Affiliates’ Knowledge,
is threatened, relating to the debarment or conviction of it or any such Person performing services hereunder;

 

11.1.5.     this
Agreement is a legal and valid obligation binding upon such Party and enforceable in accordance with its terms except as enforceability
may be limited by (a) bankruptcy, insolvency, reorganization, moratorium or similar Laws affecting the enforcement of creditors’
rights; and (b) equitable principles of general applicability;

 

11.1.6.     the
execution, delivery and performance by it of this Agreement and its compliance with the terms and provisions of this Agreement
does not and shall not conflict with or result in a breach of any of the material terms or provisions of (a) any other contractual
or other obligations of such Party, (b) the provisions of its operating documents or bylaws, or (c) any order, writ, injunction
or decree of any Governmental Authority entered against it or by which it or any of its property is bound.

 

11.2.     Assembly’s
Additional Representations and Warranties and Covenants. Except as provided in Schedule 11.2, Assembly represents and
warrants to Allergan as of the Execution Date and (subject to Section 11.6) the Effective Date, and covenants, as applicable, that:

 

11.2.1.     it
has full right and authority to grant the licenses and rights granted under this Agreement, it has the right to Exploit the Initial
Compound Candidates, and will have the right to Exploit any Licensed Product or Licensed Compound, as contemplated under this Agreement
without any conflicting contractual obligation to any other Person and no rights or licenses are required from Assembly or its
Affiliates, or, to its Knowledge, any other Person, for Allergan to Exploit the Licensed Compounds or Licensed Products as contemplated
under this Agreement other than those granted under ARTICLE 2;

 

11.2.2.     there
are no Patents of a Third Party that, to Assembly’s Knowledge, would be infringed by practicing the Licensed Compound Patents
or Exploiting the Licensed Compounds, and no claim or litigation has been brought or asserted (and Assembly has no Knowledge of
any claim, whether or not brought or asserted, or of any facts or circumstances that exist that would reasonably be expected to
give rise to any such claim or litigation) by any Person alleging that (a) the Licensed Compound Patents are invalid or unenforceable
or (b) the conception, Development, reduction to practice, disclosing, copying, making, assigning or licensing of the Licensed
Compound Patents or the Licensed Compound Know-How existing as of the Effective Date or the Exploitation of the Initial Compound
Candidates in the Initial Indications as contemplated herein, violates, infringes, constitutes misappropriation of or otherwise
conflicts or interferes with or would violate, infringe or otherwise conflict or interfere with, any intellectual property or proprietary
right of any Person;

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	74

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

11.2.3.     [*
* *];

 

11.2.4.     to
the Knowledge of Assembly, no Person is infringing or threatening to infringe or misappropriating or threatening to misappropriate
the Licensed Compound Patents existing as of the Effective Date;

 

11.2.5.     with
respect to any Patent or Know-How that would be a Licensed Compound Patent or Licensed Compound Know-How if Controlled by Assembly
or its Affiliates, Assembly or its Affiliate Control all such Patents and Know-How that Assembly or its Affiliates own;

 

11.2.6.     Assembly
(a) shall provide written notice to Allergan within ten (10) Business Days after entering into any agreement with a Third Party
to acquire or license any Patent that, if Controlled by Assembly or its Affiliates, would be a Licensed Compound Patent as set
forth in Section 1.108(b), and (b) acknowledges and agrees that such Patent shall be considered a Licensed Compound Patent under
this Agreement;

 

11.2.7.     it
has not received notice of any claims, and there are no judgments or settlements against or owed by Assembly or, to the Knowledge
of Assembly, any pending or threatened claims or litigation, in each case relating to the Licensed Compounds;

 

11.2.8.     except
pursuant to license agreements identified on Schedule 11.2.8 (the “Current In-License Agreements”),
it is the exclusive owner of all of the Licensed Compound Patents set out in Schedule 1.108 and true, complete, correct
and unredacted copies of key documents from the file wrappers and other key documents and materials relating to the prosecution,
defense, maintenance, validity and enforceability of such Licensed Compound Patents have been provided to Allergan prior to the
Effective Date;

 

11.2.9.     it
has the exclusive right to grant, all rights and licenses (or sublicenses, as the case may be) it purports to grant to Allergan
with respect to the Initial Compound Candidates, Licensed Compound Know-How and the Licensed Compound Patents under this Agreement
as of the Effective Date and neither such rights and licenses nor any other provision of this Agreement are subject to any in-license
and other similar agreements with another Person regarding any intellectual property rights licensed hereunder, including the Licensed
Compound Patents existing as of the Effective Date, other than the In-License Agreements;

 

11.2.10.     Assembly
has provided to Allergan true, complete and correct copies of all Current In-License Agreements [* * *] (collectively, the “Existing
In-License Agreements”), in their current form;

 

11.2.11.     without
the prior written consent of Allergan, Assembly will not (a) amend any In-License Agreement in a manner that adversely affects
Allergan’s rights or obligations pursuant to this Agreement or (b) terminate any In-License Agreement;

 

11.2.12.     Assembly
will comply in all material respects with its obligations under the In-License Agreements and shall enforce its rights with respect
to In-License Agreements with respect to the Licensed Compounds or Licensed Products in consultation with Allergan;

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	75

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

11.2.13.     Assembly
shall be solely responsible for any payments (including all royalty, milestone or other payments) under the In-License Agreements
in respect of the Licensed Compounds and Licensed Products;

 

11.2.14.     Assembly
shall notify Allergan as soon as reasonably practicable of (a) the receipt by Assembly of any notice of breach of any In-License
Agreement with respect to the Licensed Compounds or Licensed Products, (b) the occurrence of any acts or omissions of Assembly
or any of its Affiliates that give rise to a right of the other Party to any In-License Agreement to terminate such In-License
Agreement or (c) any termination, or receipt by Assembly of any notice of termination, of an In-License Agreement.

 

11.2.15.     the
Licensed Compound Patents in Schedule 1.108 have not been challenged by any Third Party in any judicial or administrative
proceeding and, to Assembly’s Knowledge, such Licensed Compound Patents are valid and enforceable and Assembly has complied
with all applicable Laws with respect to the filing, prosecution and maintenance of the Licensed Compound Patents owned or Controlled
by it. Assembly and its Affiliates have presented all relevant references, documents and information of which it and the inventors
are aware to the relevant patent examiner at the relevant patent office. Assembly has paid all maintenance and annuity fees with
respect to the Licensed Compound Patents due. Assembly has not received written notice of any dispute regarding inventorship of
any Licensed Compound Patent and to Assembly’s Knowledge, no such dispute has been alleged or threatened;

 

11.2.16.     Each
of the Licensed Compound Patents in Schedule 1.108 properly identifies each and every inventor of the claims thereof as determined
in accordance with the Laws of the jurisdiction in which such Licensed Compound Patent is issued or such application is pending;

 

11.2.17.     All
current and former officers, employees, agents and consultants of Assembly or any of its Affiliates who are inventors of or have
otherwise contributed in a material manner to the creation or development of any Licensed Compound Patents in Schedule 1.108
or Licensed Compound Know-How or who are or will be performing Assembly’s Development activities hereunder, or who otherwise
have access to any Confidential Information of Allergan, have executed and delivered to Assembly or such Affiliate an assignment
or other agreement regarding the protection of proprietary information and the assignment to Assembly or such Affiliate of any
Licensed Compound Patents, Licensed Compound Know-How and any and all other information that relates to the Licensed Compounds
or Licensed Products, the current form of which has been made available for review by Allergan unless such an assignment is not
required under applicable Law. To Assembly’s Knowledge, no current officer, employee, agent or consultant of Assembly or
any of its Affiliates is in violation of any term of any assignment or other agreement regarding the protection of Patents or other
intellectual property or proprietary information of Assembly or such Affiliate or of any employment contract or any other contractual
obligation relating to the relationship of any such Person with Assembly;

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	76

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

11.2.18.     there
are no amounts that will be required to be paid to a Third Party as a result of the Exploitation of the Licensed Compounds or Licensed
Products that arise out of any agreement to which Assembly or any of its Affiliates is a party;

 

11.2.19.     the
Development of the Licensed Compound Know-How, the Licensed Compound Patents and the Initial Compounds has been conducted by Assembly
and its Affiliates and its and their subcontractors, in compliance with all applicable Law in all material respects. Neither Assembly
nor any of its Affiliates, nor any of their respective officers, employees, or to Assembly’s Knowledge, agents, have made
an untrue statement of a material fact or fraudulent statement to the United States Patent and Trademark Office or any similar
patent or trademark office in the Territory or failed to disclose a material fact required to be disclosed to the United States
Patent and Trademark Office or any similar patent or trademark office in the Territory;

 

11.2.20.     it
has provided to Allergan all material information in its possession regarding the safety and efficacy of the Initial Compounds;

 

11.2.21.     it
has not misappropriated, and will not misappropriate, any intellectual property of a Third Party in connection with Developing
the Licensed Compounds or Licensed Products or the performance of the R&D Plan or its other obligations under this Agreement;

 

11.2.22.     the
Licensed Compound Patents listed on Schedule 1.108 are all of the Licensed Compound Patents Controlled by Assembly as of
the Effective Date;

 

11.2.23.     true,
complete, correct and unredacted copies of all agreements set forth in Schedule 11.2.23 have been provided to Allergan prior to
the Effective Date, and except as set forth in Schedule 11.2.23 and except with regard to any subcontracts or work orders entered
into by Assembly after the Execution Date but before the Effective Date in accordance with Section 4.10, (a) Assembly has not subcontracted
to any Third Party any activities contemplated to be conducted by Assembly under the R&D Plan or any manufacturing activities,
and (b) there are no agreements relating to the Licensed Compounds;

 

11.2.24.     without
limitation to Assembly’s obligations under Section 4.3.1, Assembly has maintained all records, and shall continue to maintain,
all records of material activities conducted by it or its Affiliates under or in connection with [* * *];

 

11.2.25.     each
of the Permitted Indications as of the Effective Date is part of the “Field” [* * *];

 

11.2.26.     each
Compound Candidate, Product Candidate, Licensed Compound and Licensed Product manufactured by Assembly or its CMO(s) for use in
Clinical Trials under the R&D Plan (a) will have been manufactured, stored and shipped in accordance with GMP and all applicable
Laws; (b) will conform to the Specifications for such Licensed Compound or Licensed Product, (c) will be free from defects; (d)
will not be adulterated or misbranded within the meaning of the FD&C Act to the extent applicable; and (e) will have been shipped
and stored in accordance with the procedures set forth under this Agreement and the Clinical Quality Agreement;

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	77

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

11.2.27.     (a)
neither Assembly nor any of its Affiliates, nor any of its or their respective officers or employees, has (i) committed an act,
(ii) made a statement or (iii) failed to act or make a statement, in any case ((i), (ii) or (iii)), that (A) would be or create
an untrue statement of material fact or fraudulent statement to the FDA or any other Regulatory Authority with respect to the Exploitation
of the Licensed Compounds or Licensed Products or (B) could reasonably be expected to provide a basis for the FDA to invoke its
policy respecting “Fraud, Untrue Statements of Material Facts, Bribery and Illegal Gratuities”, set forth in 56 Fed.
Reg. 46191 (September 10, 1991) and any amendments thereto or any analogous laws or policies in the Territory, with respect the
Exploitation of the Licensed Compounds or Licensed Products and (b) neither Assembly nor any of its Affiliates shall during the
R&D Term with respect to activities under the R&D Plan (i) commit an act, (ii) make a statement or (iii) fail to act or
make a statement, in any case ((i), (ii) or (iii)), that (A) would be or create an untrue statement of material fact or fraudulent
statement to the FDA or any other Regulatory Authority with respect to the Exploitation of the Licensed Compounds or Licensed Products
or (B) could reasonably be expected to provide a basis for the FDA to invoke its policy respecting “Fraud, Untrue Statements
of Material Facts, Bribery and Illegal Gratuities”, set forth in 56 Fed. Reg. 46191 (September 10, 1991) and any amendments
thereto or any analogous laws or policies in the Territory, with respect to the Exploitation of the Licensed Compounds or Licensed
Products;

 

11.2.28.     the
inventions claimed by the Licensed Compound Patents existing as of the Effective Date (a) were not conceived, discovered,
developed or otherwise made in connection with any research activities funded, in whole or in part, by the federal government of
the US or any agency thereof and (b) are not a “subject invention” as that term is described in 35 U.S.C. §§
Section 201(e) and (c) are not otherwise subject to the provisions of the Patent and Trademark Law Amendments Act of 1980, as amended,
codified at 35 U.S.C. §§ 200-212, as amended, as well as any regulations promulgated pursuant thereto, including
in 37 C.F.R. Part 401; and

 

11.2.29.     [*
* *].

 

11.3.     Allergan
Additional Representations and Warranties.

 

11.3.1.     Allergan
represents and warrants to Assembly of the Execution Date and (subject to Section 11.6), and covenants, that all officers, employees,
agents and consultants of Allergan or any of its Affiliates who will perform Development activities hereunder, or who otherwise
have access to any Confidential Information of Assembly, have executed and delivered to Allergan or such Affiliate an assignment
or other agreement regarding the protection of proprietary information and the assignment to Allergan or such Affiliate of any
Patents or Know-How that may arise out of or relate to such activities.

 

11.3.2.     Allergan
shall comply with those terms and conditions under the In-License Agreements that are applicable to Allergan as a sublicensee of
any of Assembly’s rights thereunder, in each case to the extent such terms and conditions have been disclosed by Assembly
to Allergan (and, in the case of the Current In-License Agreement, to the extent such terms and conditions have been disclosed
to Allergan prior to the Execution Date) and Allergan has agreed in writing to receive a sublicense to any Licensed Compound Patent
or Licensed Compound Know-How under such agreement.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	78

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

11.4.     Compliance
with Laws. Each Party shall perform its responsibilities under this Agreement in accordance with all applicable Laws.

 

11.5.     Privacy;
Transparency; Anti-Corruption. Without limitation to Section 11.4, the Parties agree as follows.

 

11.5.1.     Data
Privacy. Each Party shall comply with all applicable Law with respect to the collection, use, transfer, storage, destruction,
aggregation or other use of subject health information or other personal information (collectively, “Personal Information”)
in connection with its activities under or in connection with the R&D Plan. Each Party shall take such steps as necessary to
comply with applicable Law to permit such Party to disclose Personal Information to the other Party and to permit the other Party
to use and disclose such Personal Information for its own purposes in accordance with this Agreement.

 

11.5.2.     Compliance.
Each Party shall implement appropriate processes and controls with respect to technology and work flow methodologies in connection
with its activities under or in connection with the R&D Plan so as to protect the security and privacy of personally identifiable
information in accordance with applicable Law.

 

11.5.3.     Sunshine
Act. Allergan and Assembly acknowledge that, under the provisions of Section 1128G of the Social Security Act, 42 U.S.C. §
1320a-7h and other similar provisions of applicable Law, Allergan and Assembly may be required to disclose certain payments and
other transfers of value provided to health care professionals and institutions, including payments, reimbursements, Materials
or equipment made or provided under or in connection with this Agreement or the R&D Plan. Each of Assembly and Allergan will
provide the other or its designee/s with all information necessary for the other to comply with such applicable Laws in the form
reasonably requested by the requesting Party and at such times as the requesting Party may reasonably request to satisfy its obligations.

 

11.5.4.     Anti-Corruption.
Assembly and Allergan will strictly comply with all applicable Laws concerning bribery, money laundering, or corrupt practices
or which in any manner prohibit the giving of anything of value to any official, agent or employee of any government, political
party or public international organization, candidate for public office, health care professional, or to any officer, director,
employee or representative of any other organization specifically including the U.S. Foreign Corrupt Practices Act, and the UK
Bribery Act, in each case in connection with the activities conducted pursuant to this Agreement. Assembly shall require any contractors,
subcontractors or other persons or entities that provide services to Assembly or Allergan in connection with this Agreement to
comply with Assembly’s obligations under this Section 11.5.4.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	79

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

11.6.     Updates
to Representations and Warranties. Either (a) on the date that is the Business Day following HSR Clearance Assembly
shall deliver to Allergan representations and warranties under Section 11.2 that are identical to such representations and warranties
delivered as of the Execution Date or (b) on the date that is two (2) Business Days following HSR Clearance, Assembly shall deliver
to Allergan representations and warranties under Section 11.2 that are identical to such representations and warranties delivered
as of the Execution Date, except for any supplement or amendment to such representations and warranties with respect to any event,
condition, fact or circumstance occurring after the Execution Date that, if existing or occurring on or prior to the Execution
Date, would have been required to be set forth or described in such representations and warranties as of the Execution Date, or
that is necessary to correct or modify any information in such representations and warranties that has been rendered inaccurate
by an event, condition, fact or circumstance occurring after the Execution Date. If Assembly does not deliver representations and
warranties under the foregoing clause (a) or (b), Assembly shall be deemed to have delivered to Allergan on the date that is two
(2) Business Days following HSR Clearance representations and warranties under Section 11.2 that are identical to such representations
and warranties delivered as of the Execution Date.

 

ARTICLE
12

INDEMNIFICATION

 

12.1.     Assembly.
Assembly shall defend, indemnify and hold Allergan, its Affiliates and their respective directors, officers, employees and agents
(the “Allergan Indemnitees”), at Assembly’s cost and expense, harmless from and against any and
all losses, costs, damages, fees or expenses (including reasonable attorney’s fees and expenses) (“Losses”)
incurred in connection with or arising out of any:

 

(a)     Third
Party claims, suits or demands (“Third Party Claims”) arising out of or in connection with any breach
by Assembly of the representations, warranties or covenants contained in this Agreement;

 

(b)     Third
Party Claims arising out of or in connection with the activities of Assembly or its Affiliates before the Effective Date;

 

(c)     Third
Party Claims arising out of or in connection with the Exploitation of a Compound Candidate, Product Candidate, Licensed Compound
or Licensed Product by Assembly, its Affiliate or their respective designees (including a subcontractor) but, for avoidance of
doubt, excluding Allergan, its Affiliates and their respective designees (including subcontractors) except to the extent such relevant
act of Exploitation was taken with respect to a Licensed Product in a Permitted Indication following the Completion of a POC Trial
for such Licensed Product in such Permitted Indication at Allergan’s direction and in accordance with Allergan’s written
instructions, including any such direction and written instructions provided pursuant to and in accordance with a Co-Promotion
Agreement but, for the avoidance of doubt, not including any activities not included in or consistent with Allergan’s written
instructions;

 

(d)     Third
Party Claims arising out of or in connection with Assembly’s Exploitation of any Reversion Product;

 

(e)     Third
Party Claims arising out of or in connection with any negligence or willful misconduct of Assembly in the exercise of any of its
rights or the performance of any of its obligations under this Agreement; or

 

(f)     Third
Party Claims arising under any In-License Agreement;

 

in each case except to the extent that such
Losses are (A) subject to indemnification by Allergan pursuant to Section 12.2 below or (B) attributable to the negligence or willful
misconduct of the Allergan Indemnitees.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	80

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

12.2.     Allergan.
Allergan shall defend, indemnify and hold Assembly, its Affiliates and their respective directors, officers, employees and agents
(the “Assembly Indemnitees”), at Allergan’s cost and expense, harmless from and against any and
all Losses incurred in connection with or arising out of any:

 

(a)     Third
Party Claims resulting from either:

 

(i)     the
Development of Licensed Products by Allergan, its Affiliates, Sublicensees and their respective designees (including subcontractors
but, for avoidance of doubt, excluding Assembly, its Affiliates and their respective designees) ; or

 

(ii)     the
Commercialization of Licensed Products by Allergan, its Affiliates, Sublicensees and their respective designees (including subcontractors
but, for avoidance of doubt, excluding Assembly, its Affiliates and their respective designees); and

 

(b)     Third
Party Claims arising out of or in connection with any breach by Allergan of the representations, warranties or covenants contained
in this Agreement; or

 

(c)     Third
Party Claims arising out of or in connection with any negligence or wilful misconduct of Allergan in the exercise of any of its
rights or the performance of any of its obligations under this Agreement;

 

in each case except to the extent that such
Losses are (A) subject to indemnification by Assembly pursuant to Section 12.1 above or (B) attributable to the negligence or willful
misconduct of the Assembly Indemnitees.

 

12.3.     Notice
of Claim. All indemnification claims in respect of any person seeking indemnification under Section 12.1 or 12.2 (collectively,
the “Indemnitees” and each an “Indemnitee”) shall be made by the corresponding
Party (the “Indemnified Party”). The Indemnified Party shall give the indemnifying Party (the “Indemnifying
Party”) prompt written notice (an “Indemnification Claim Notice”) of any Losses or the
discovery of any fact upon which such Indemnified Party intends to base a request for indemnification under Section 12.1 or 12.2,
but in no event shall the Indemnifying Party be liable for any Losses that result from any delay by the Indemnified Party in providing
such notice that materially prejudices the defense of such Third Party Claim. Each Indemnification Claim Notice must contain a
description of the claim and the nature and amount of such Losses (to the extent that the nature and amount of such Losses are
known at such time). Together with the Indemnification Claim Notice, the Indemnified Party shall furnish promptly to the Indemnifying
Party copies of all notices and documents (including court papers) received by any Indemnitee in connection with the Third Party
Claim. The Indemnifying Party shall not be obligated to indemnify the Indemnified Party to the extent any admission or statement
made by the Indemnified Party materially prejudices the defense of such Third Party Claim.

 

12.4.     Indemnification
Procedure. In respect of Third Party Claims, the obligations of an Indemnifying Party under this Section 12.4 shall
be governed by and contingent upon the following:

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	81

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(a)     at
its option, the Indemnifying Party may assume control of the defense of any Third Party Claim (which, for the avoidance of doubt,
shall include the conduct of all dealings with such Third Party) by giving written notice to the Indemnified Party within thirty
(30) days after the Indemnifying Party’s receipt of an Indemnification Claim Notice. The assumption of control of the defense
of a Third Party Claim by the Indemnifying Party shall not be construed as an acknowledgement that the Indemnifying Party is liable
to indemnify any Indemnitee in respect of the Third Party Claim, nor shall it constitute a waiver by the Indemnifying Party of
any defenses it may assert against any Indemnified Party’s claim for indemnification.

 

(b)     upon
the assumption of the control of the defense of a Third Party Claim by the Indemnifying Party:

 

(i)     subject
to the provisions of Section 12.4(c), it shall have the right to and shall assume sole control and responsibility for dealing with
the Third Party and the Third Party Claim, including the right to settle the claim on any terms the Indemnifying Party chooses,
but at all times in accordance with the provisions of Section 12.4(c) and 12.4(d);

 

(ii)     if
it chooses, the Indemnifying Party may appoint as counsel in the defense of the Third Party Claim any law firm or counsel selected
by the Indemnifying Party; and

 

(iii)        except
as expressly provided in Section 12.4(c), the Indemnifying Party shall not be liable to the Indemnified Party for any legal expenses
subsequently incurred by such Indemnified Party or any Indemnitee in connection with the analysis, defense, or settlement of the
Third Party Claim. In the event that it is ultimately determined that the Indemnifying Party is not obligated to indemnify, defend
or hold harmless an Indemnitee from and against the Third Party Claim, the Indemnified Party shall reimburse the Indemnifying Party
for any and all costs and expenses (including lawyers’ fees and costs of suit) and any Losses incurred by the Indemnifying
Party in its defense of the Third Party Claim with respect to such Indemnified Party or Indemnitee.

 

(c)     without
limiting the remainder of this Section 12.4, any Indemnitee shall be entitled to participate in, but not control, the defense of
a Third Party Claim and to retain counsel of its choice for such purpose; provided, that such retention shall be at the
Indemnitee’s own cost and expense unless (i) the Indemnifying Party has failed to assume the defense and retain counsel in
accordance with Section 12.4(a) (in which case the Indemnified Party shall control the defense), or (ii) the interests of the Indemnitee
and the Indemnifying Party with respect to such Third Party Claim are sufficiently adverse to prohibit the representation by the
same counsel of both Parties under any legal requirement, ethical rules or equitable principles.

 

(d)     with
respect to any Losses relating solely to the payment of money to the Third Party to settle the Third Party Claim and that will
not result in the Indemnified Party or the Indemnitee becoming subject to injunctive relief, and as to which the Indemnifying Party
shall have acknowledged in writing the obligation to indemnify the Indemnitee under Section 12.4(a), the Indemnifying Party shall
have authority to consent to the entry of any judgment, enter into any settlement or otherwise dispose of such Losses. With respect
to all other Losses or where the Indemnified Party will be subject to injunctive relief, where the Indemnifying Party has assumed
the defense of a Third Party Claim in accordance with Section 12.4(a), the Indemnifying Party must not consent to the entry of
any judgment, enter into any settlement or otherwise dispose of such Losses, unless it obtains the prior written consent of the
Indemnified Party (which consent shall not be unreasonably withheld, conditioned or delayed).

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	82

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

(e)     if
the Indemnifying Party chooses not to take control of the defense or prosecute any Third Party Claim, the Indemnified Party shall
retain control of the defense thereof, but no Indemnified Party or Indemnitee shall admit any liability with respect to, or settle,
compromise or discharge, any such Third Party Claim without the prior written consent of the Indemnifying Party, which consent
shall not be unreasonably withheld, conditioned or delayed. The Indemnifying Party shall not be liable for any settlement or other
disposition of Losses by an Indemnified Party or an Indemnitee under such a Third Party Claim that is reached without the written
consent of the Indemnifying Party, which consent will not be unreasonably withheld, conditioned or delayed.

 

(f)     if
the Indemnifying Party chooses to control the defense of any Third Party Claim, the Indemnified Party shall, and shall cause each
other Indemnitee to, reasonably cooperate in the defense thereof and shall furnish such records, information and testimony, provide
such witnesses and attend such conferences, discovery proceedings, hearings, trials and appeals as may be reasonably requested
in connection therewith. Such cooperation shall include access during normal business hours by the Indemnifying Party to, and reasonable
retention by the Indemnified Party of, records and information that are reasonably relevant to such Third Party Claim, and making
the Indemnified Party, the Indemnitees and its and their employees and agents available on a mutually convenient basis to provide
additional information and explanation of any records or information, to the extent the Third Party Claim is subject to indemnification
hereunder.

 

12.5.     Expenses.
Except as expressly provided above, the reasonable and verifiable out-of-pocket costs and expenses, including fees and disbursements
of counsel, incurred by the Indemnified Party where it participates in the defense under Sections 12.4(b)(i) or 12.4(b)(ii) or
cooperates pursuant to Section 12.4(f) shall be reimbursed on a quarterly basis by the Indemnifying Party, without prejudice to
the Indemnifying Party’s right to contest the Indemnified Party’s right to indemnification and subject to refund in
the event the Indemnifying Party is ultimately held not to be obligated to indemnify the Indemnified Party.

 

12.6.     Insurance.
Each Party shall have and maintain, at its sole cost and expense, an adequate liability insurance (including product liability
insurance) obtained from a reputable insurer to protect against potential liabilities and risk arising out of activities to be
performed under this Agreement and any agreement related hereto and upon such terms (including coverages and deductible limits)
as are customary in the pharmaceutical industry generally for the activities to be conducted by such Party under this Agreement.
Such liability insurance shall insure against all types of liability, including personal injury, physical injury or property damage
arising out of such Party’s activities hereunder. This Section 12.6 shall not create any limitation on the Parties’
liability under this Agreement. Such insurance information shall be kept in confidence in the same manner as any other Confidential
Information disclosed by the Parties hereunder.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	83

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

12.7.        Consequential
Damages.

 

12.7.1.     EXCEPT
IN THE EVENT OF THE GROSS NEGLIGENCE, WILLFUL MISCONDUCT OR FRAUD OF A PARTY, IN NO EVENT SHALL EITHER PARTY OR THEIR AFFILIATES
BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, PUNITIVE, TREBLE OR CONSEQUENTIAL DAMAGES OR INDIRECT LOST PROFITS, WHETHER BASED
ON CONTRACT, TORT OR ANY OTHER LEGAL THEORY; PROVIDED, HOWEVER, THAT THIS LIMITATION SHALL NOT LIMIT (A) BREACHES OF CONFIDENTIALITY
OBLIGATIONS UNDER ARTICLE 8, (B) THE INDEMNIFICATION OBLIGATION OF SUCH PARTY IN RESPECT OF AMOUNTS ACTUALLY AWARDED AGAINST AN
INDEMNIFIED PARTY AS A PART OF A THIRD PARTY CLAIM UNDER THE PROVISIONS OF THIS ARTICLE 12 OR (C) A BREACH BY ASSEMBLY UNDER THIS
AGREEMENT OR A CO-PROMOTION AGREEMENT OF ITS OBLIGATION TO PROVIDE ITS SHARE OF DETAILING EFFORTS IN CHINA OR THE UNITED STATES
IN ACCORDANCE WITH THIS AGREEMETN OR ANY CO-PROMOTION AGREEMENT.

 

12.7.2.     Nothing
in this Agreement shall limit a Party’s liability for death or personal injury caused by its negligence or for fraud.

 

ARTICLE
13

MISCELLANEOUS

 

13.1.     Assignment.
Neither Party may assign or transfer (whether by operation of applicable Law or otherwise) this Agreement or any rights or obligations
hereunder without the prior written consent of the other Party, except that a Party may make such an assignment without the other
Party’s consent to an Affiliate or to a successor to substantially all of the business to which this Agreement relates, whether
in a merger, sale of stock, sale of assets, reorganization or other transaction. Further, each Party shall have the right to cause
the performance by an Affiliate of some or all of such Party’s obligations hereunder, without the prior written consent of
the other Party. In all cases, the assigning Party shall provide the other Party with prompt written notice of any such assignment
and the permitted assignee shall assume the obligations of the assigning Party hereunder in writing. No assignment of this Agreement
shall act as a novation or release of either Party from responsibility for the performance of any accrued obligations.

 

13.2.     Non-Solicitation
of Employees. During the R&D Term and for a period of three (3) years thereafter, each Party agrees that it will not directly
recruit, solicit or induce any employee of the other Party who is directly associated with the performance under the R&D Plan
to terminate his or her employment with such other Party. However, nothing set forth in this Section 13.2 shall prohibit a Party
from indirectly recruiting, soliciting or inducing such employees to leave the other Party through the use of general searches,
general advertisements and solicitations in trade journals and the like not targeting such employees, or from discussing employment
opportunities with such employees to the extent such employees contact such Party first.

 

13.3.     Governing
Law. This Agreement and any dispute or claim arising out of or in connection with it (whether contractual or non-contractual
in nature such as claims in tort, from breach of statute or regulation or otherwise) shall be governed by and construed in accordance
with the laws of the State of New York, excluding: (a) any conflicts or choice of law rule or principle that might otherwise
refer construction or interpretation of this Agreement to the substantive law of another jurisdiction; and (b) any dispute with
respect to infringement, validity, or enforceability of any Patent, which shall be governed by and construed and enforced in accordance
with the laws of the jurisdiction in which such Patent is issued or published.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	84

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

13.4.     Dispute
Resolution. Subject to Section 10.4, any dispute or claim arising out of or in connection with this Agreement other
than a dispute or claim that (a) may arise under Section 9.2, (b) relates to the scope, construction, validity, or enforceability
of any Patent in a country within the Territory, (c) otherwise requires the interpretation or application of applicable Law regarding
Patents to resolve such dispute or claim or (d) for which a Party or other Person has been granted final decision-making authority
hereunder (including Section 9.1.6(c)) (but excluding disputes about the applicability of such grant of final decision-making
authority which shall be subject to this Section 13.4), including any question regarding the Agreement’s existence, validity
or termination shall be referred to and finally resolved by arbitration under the rules of the International Chamber of Commerce
(“ICC”), which are deemed incorporated into this Section 13.4. The place of arbitration shall be New
York. The language to be used in the arbitration procedures shall be English. The arbitration proceedings, including any outcome,
shall be confidential. Nothing in this Section 13.4 will preclude either Party from seeking equitable interim or provisional relief
from a court of competent jurisdiction including a temporary restraining order, preliminary injunction or other interim equitable
relief, concerning a dispute either prior to or during any arbitration if necessary to protect the interests of such Party or to
preserve the status quo pending the arbitration proceeding. The number of arbitrators shall be three (3), of which each Party shall
appoint one (1), the arbitrators so appointed will select the third and final arbitrator. The arbitrators shall have experience
in pharmaceutical licensing disputes. In connection with a proceeding initiated by a Party seeking a more specific time period
reasonably required by a breaching Party to cure a breach under Section 10.3, the arbitrators shall be instructed to consider the
time period that would reasonably be required to cure the applicable material breach by the allegedly breaching Party using Commercially
Reasonable Efforts.

 

13.5.     Force
Majeure. Neither Party shall be liable to the other for any failure or delay in the fulfillment of its obligations under
this Agreement (other than the payment of monies due and owing to a Party under this Agreement), when any such failure or delay
is caused by fire, flood, earthquakes, explosions, sabotage, terrorism, civil commotions, riots, invasions, wars, peril of the
sea or requirements of Governmental Authorities (each, a “Force Majeure Event”).
In the event that either Party is prevented from discharging its obligations under this Agreement on account of a Force Majeure
Event, the performing Party shall promptly notify the other Party, and such other Party shall use good faith efforts to discharge
its obligations, even if in a partial or compromised manner.

 

13.6.     Expenses.
Except as otherwise expressly provided herein or mutually agreed, all costs and expenses incurred in connection with this Agreement
and the transactions contemplated hereby shall be borne by the Party incurring such costs and expenses.

 

13.7.     No
Agency. Nothing herein contained shall be deemed to create an agency, joint venture, amalgamation, partnership or similar
relationship between Assembly and Allergan. Notwithstanding any of the provisions of this Agreement, neither Party shall at any
time enter into, incur, or hold itself out to Third Parties as having authority to enter into or incur, on behalf of the other
Party, any commitment, expense, or liability whatsoever, and all contracts, expenses and liabilities undertaken or incurred by
one Party in connection with or relating to the Development, manufacture or Commercialization of a Licensed Compound or Licensed
Product shall be undertaken, incurred or paid exclusively by that Party, and not as an agent or representative of the other Party.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	85

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

13.8.     No
Third Party Beneficiaries. The warranties and agreements contained in this Agreement are for the sole benefit of the
Parties, and in Allergan’s case, Allergan’s Affiliates, and their respective successors and permitted assigns, and
they shall not be construed as conferring any rights to any other Persons.

 

13.9.     Entire
Agreement; Amendment. This Agreement (including all schedules and exhibits hereto) constitutes the entire agreement
between the Parties with respect to the subject matter hereof and supersedes all prior agreements or understandings, oral or written,
with respect to such matters. The Parties acknowledge that this Agreement has not been entered into wholly or partly in reliance
on, nor has either party been given, any warranty, statement, promise or representation by the other or on its behalf other than
as expressly set out in this Agreement. This Agreement may be amended or modified only by a writing signed by both Parties.

 

13.10.     Severability.
If any provision of this Agreement is held to be illegal, invalid or unenforceable under any present or future law and if the rights
or obligations of either Party under this Agreement will not be materially and adversely affected thereby, (a) such provision shall
be fully severable, (b) this Agreement shall be construed and enforced as if such illegal, invalid or unenforceable provision had
never comprised a part hereof, (c) the remaining provisions of this Agreement shall remain in full force and effect and shall not
be affected by the illegal, invalid or unenforceable provision or by its severance herefrom, and (d) in lieu of such illegal, invalid
or unenforceable provision, there shall be added automatically as a part of this Agreement a legal, valid and enforceable provision
as similar in terms to such illegal, invalid or unenforceable provision as may be possible and reasonably acceptable to the Parties.
To the fullest extent permitted by applicable Law, each Party hereby waives any provision of law that would render any provision
hereof illegal, invalid or unenforceable in any respect.

 

13.11.     Extension;
Waiver. At any time, either Assembly or Allergan may (a) with respect to obligations owed to it or the performance of
other acts for its benefit, extend the time for the performance of such obligations or such other acts to be performed hereunder
by the other, (b) waive any inaccuracies in the representations and warranties of the other contained herein or in any document
delivered pursuant hereto and (c) waive compliance with any of the conditions to the obligations of the other contained herein.
Any agreement on the part of either Party to any such extension or waiver shall be valid only if set forth in an instrument executed
by such Party. No such waiver shall be operative as a waiver of any other subsequent requirement of this Agreement. The failure
of any Party to assert any of its rights under this Agreement or otherwise shall not constitute a waiver of such rights.

 

13.12.     Notices.
All communications required to be made under this Agreement shall be effective upon receipt, and shall be sent to the addresses
set out below, or to such other addresses as may be designated by one Party to the other by notice pursuant hereto, by (a) internationally
recognized overnight courier; (b) prepaid registered or certified US mail, return receipt requested; or (c) facsimile transmission
or other electronic means of communication with confirmation by letter sent by the close of business on or before the next following
Business Day at the address set forth below, or such other address as may be designated in writing hereafter, in the same manner,
by such Party as follows:

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	86

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

	
        If to Assembly, as follows:

         

        Assembly Biosciences, Inc.

        11711 N. Meridian street, Suite 310

        Carmel, IN 46032

        Attention: Chief Executive Officer

         

        With copies (which shall not constitute notice) to:

         

        Assembly Biosciences, Inc.

        11711 N. Meridian street, Suite 310

        Carmel, IN 46032

        Attention: Chief Scientific Officer, Microbiome

         

        Goodwin Procter

        100 Northern Avenue

        Boston, MA 02210

        Attention: Christopher Denn

	 
	
        If to Allergan, as follows:

         

        Allergan Pharmaceuticals International
        Limited

        Clonshaugh Industrial Estate

        Coolock

        Dublin 17, Ireland

        Attention: General Manager

        Facsimile: 353 (0)1 435 7775

         

        with copies (which shall not
        constitute notice) to:

         

        Allergan Pharmaceuticals International
        Limited

        Clonshaugh Industrial Estate

        Coolock

        Dublin 17, Ireland

        Attention: Secretary

        Facsimile: 353 (0)1 435 7775

         

        and

         

        Allergan, Inc.

        Morris Corporate Center III

        400 Interpace Parkway

        Parsippany, NJ 07054

        Attention: General Counsel

        Facsimile: (862) 261-7923

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	87

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

13.13     HSR
Act Compliance.

 

13.13.1     HSR
Filing. Each of Assembly and Allergan shall make an HSR Filing as soon as practicable and advisable (but no later than fifteen
(15) Business Days, unless the Parties mutually agree otherwise) after the Execution Date. The Parties shall cooperate with one
another to the extent necessary in the preparation of any such filings. Each Party shall be responsible for its own costs and expenses
associated with any such filings and Allergan shall be responsible for the filing fee.

 

13.13.2     HSR
Clearance. In connection with obtaining HSR Clearance, Assembly and Allergan shall use their respective commercially reasonable
efforts (a) to secure the early termination or expiration of any waiting periods under the HSR Act and (b) to resolve as promptly
as practicable any objections that may be asserted by the FTC or the Antitrust Division of the DOJ with respect to the transactions
notified in the HSR Filing; provided, that (i) the term “commercially reasonable efforts” as used in this Section
13.13.1 shall not require Assembly or Allergan to (a) sell, divest (including through a license or a reversion of licensed or assigned
rights), hold separate, transfer, or dispose of any portion of the assets, operations, rights, product lines, or businesses, or
interests therein, of itself or any of its Affiliates (or consent to any of the foregoing actions), (b) restrain, restrict, prohibit
or limit the ability of Allergan or Assembly to conduct its business or own its assets (or consent to any of the foregoing actions)
or (c) litigate or otherwise formally oppose any determination (whether judicial or administrative in nature) by a Governmental
Authority seeking to challenge the transactions contemplated by this Agreement or impose any of the restrictions referenced in
clause (a) or (b) above; provided, that (i) Allergan shall not be required to agree to or effectuate any remedy related
to any Assembly assets and (ii) Assembly shall not agree to or effectuate any remedy without the prior written consent of Allergan.
Without limiting the foregoing, Assembly and Allergan each hereby covenants and agrees to use its commercially reasonable efforts
to comply as promptly as advisable with or, as advisable, request modifications to any requests for additional information by FTC
or DOJ (and if such request is a Second Request, to certify substantial compliance as promptly as is practicable and advisable).

 

13.13.3     Cooperation.
In connection with obtaining HSR Clearance, each of Assembly and Allergan shall (a) cooperate with each other in connection with
any investigation or other inquiry relating to an HSR Filing and the transactions contemplated by this Agreement; (b) keep the
other Party or its counsel informed of any material communication received from or given to the FTC or DOJ relating to the HSR
Filing and the transactions contemplated by this Agreement (and provide a copy to the other Party if such material communication
is in writing); (c) permit the other Party or its counsel to review in advance, and in good faith consider the views of the other
Party or its counsel concerning, any written submission or filing (and documents submitted therewith) intended to be given to the
FTC or DOJ; and (d) not participate in any substantive meeting or substantive discussion with FTC or DOJ in respect of investigation
or inquiry concerning the transactions contemplated hereby unless it consults with the other party in advance and, except as prohibited
by applicable Law or Governmental Authority, gives the other party the opportunity to attend and participate thereat; provided,
that after good faith consideration of any input from Assembly, Allergan shall make the final determination as to the appropriate
strategy relating to any filing or submission that is necessary under the HSR Act, including with respect to any filings, notifications,
submissions and communications with or to the FTC or the Antitrust Division of the DOJ.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	88

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

13.14.     Further
Assurances. Each Party shall perform all further acts and things and execute and deliver such further documents as may
be necessary or as the other Party may reasonably require to implement or give effect to this Agreement.

 

13.15.     No
Strict Construction. This Agreement shall be construed as if it were drafted jointly by the Parties.

 

13.16.     Headings.
The headings herein are for convenience purposes only and shall not be used to interpret any of the provisions hereof.

 

13.17.     Counterparts.
This Agreement may be executed in any number of counterparts, each of which shall be deemed an original and all of which taken
together shall be deemed to constitute one and the same instrument. An executed signature page of this Agreement delivered by facsimile
transmission or by electronic mail in “portable document format” (“.pdf”) shall be as effective as an original
executed signature page.

 

13.18.     Non-Exclusive
Remedies. The remedies set forth in this Agreement shall be in addition to, and shall not be to the exclusion of, any
other remedies available to the Parties at Law, in equity or under this Agreement; provided, that in assessing the remedies
available to Assembly, the rights transferred to Assembly following a termination of this Agreement shall be taken into account
and in assessing the remedies available to Allergan, any exercise of the right of set-off, and, any reduction in Allergan’s
payment obligations to Assembly and the imposition of payment obligations on Assembly to Allergan, on certain terminations of this
Agreement, as applicable, shall be taken into account.

 

[Signature page follows]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	89

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

IN
WITNESS WHEREOF this Agreement has been signed by the duly authorized representatives of the Parties as of the Execution
Date. 

	 	 
	SIGNED for and by behalf of	 
	ASSEMBLY BIOSCIENCES, INC.	/s/ Derek A. Small
	 	 
	 	Derek A. Small, President & CEO
	 	Print Name and Title
	 	 
	SIGNED for and by behalf of	 
	ALLERGAN PHARMACEUTICALS INTERNATIONAL LIMITED	/s/ Tom Daunt
	 	 
	 	Tom Daunt, Director
	 	Print Name and Title

 

[Signature Page to Research, Development,
Collaboration and License Agreement]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

Exhibit A

 

Indications

 

Irritable bowel syndrome – constipation, diarrhea and mixed
(IBS-c, IBS-d and IBS-m)

Ulcerative colitis (UC)

Crohn’s disease

[* * *]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

Schedule 1.1

201 Compound Candidate (Initial Indication
- ulcerative colitis) 

 

201 Compound Candidate is under development. [* * *] for 201 Compound
Candidate (Initial Indication - ulcerative colitis) [* * *]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

Schedule 1.2

301 Compound Candidate (Initial Indication
- Crohn’s disease)

 

301 Compound Candidate is under development. [* * *] for 301 Compound
Candidate (Initial Indication - Crohn’s disease) [* * *]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

Schedule 1.103

 

Knowledge

 

Knowledge – Assembly

[* * *]

 

Knowledge – Allergan

[* * *]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

Schedule 1.108

Licensed Compound Patents

 

[* * *]

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

[* * *]

 

	Patent/

Application

Number	 	Patent Filing

Date	 	Title	 	Remarks
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	 	 	 	 	 	 	 
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]
	 	 	 	 	 	 	 
	[* * *]	 	[* * *]	 	[* * *]	 	[* * *]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

Schedule 1.153

 

R&D Plan

 

[* * *]

 

RESEARCH AND DEVELOPMENT PLAN

 

OUTLINE

 

[* * *]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

Schedule 8.5.1(c)

 

Press

Releases

 

NEWS RELEASE

 

	 	CONTACTS:	 
	 	 	 
	 	ALLERGAN	ASSEMBLY
	 	INVESTORS:	INVESTORS:
	 	Lisa DeFrancesco	Lauren Glaser
	 	(862) 261-7152	(415) 521-3828
	 	 	 
	 	MEDIA:	MEDIA:
	 	Mark Marmur	Barbara Lindheim
	 	(862) 261-7558	(212) 584-2276

 

 

Allergan Enters Into Licensing Agreement
with Assembly Biosciences to Obtain Worldwide Rights to Microbiome Gastrointestinal Development Programs

 

— Expands Allergan’s Innovative
GI Pipeline with ABI-M201 and ABI-M301, Preclinical Compounds Targeting Ulcerative Colitis and Crohn’s Disease, as well as
Future Compounds for Irritable Bowel Syndrome — 

 

DUBLIN, IRELAND and INDIANAPOLIS, INDIANA (USA) – January
9, 2017 – Allergan plc (NYSE: AGN) and Assembly Biosciences, Inc. (NASDAQ: ASMB) today announced that Allergan has entered
into a research, development, collaboration and license agreement for the worldwide rights to Assembly’s microbiome gastrointestinal
(GI) development programs. The agreement provides Allergan with worldwide rights to preclinical compounds ABI-M201 and ABI-M301,
targeting ulcerative colitis (UC) and Crohn’s disease (CD), as well as two additional compounds to be identified by Assembly
for Irritable Bowel Syndromes (IBS); with Diarrhea (IBS-D), with Constipation (IBS-C) or Mixed (IBS-M).

 

Under the terms of the agreement, Allergan will make an upfront
payment to Assembly of $50 million for the exclusive, worldwide rights to develop and commercialize the UC, CD and IBS compounds.
Additionally, Assembly will be entitled to receive success-based development and commercial milestone payments. Assembly is also
eligible to receive tiered royalties based on net sales. Allergan and Assembly will generally share development costs through proof-of-concept
(POC) studies, and Allergan will assume all post-POC development costs.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

The Assembly microbiome program consists of a fully integrated platform
that includes a robust strain identification and selection process, methods for strain isolation and growth under current Good
Manufacturing Practices and a patent-pending delivery system, GEMICEL®, which allows for targeted oral delivery of live biologic
and conventional therapies to the lower gastrointestinal tract.

 

“The Microbiome — the microbial populations that colonize
the human body — is rapidly gaining prominence in numerous fields of research relevant to Allergan’s key areas of focus,
including GI disorders,” said David Nicholson, Chief R&D Officer, Allergan. “Assembly is well positioned to identify
and select unique therapeutic candidates and deliver them to the optimal site in the GI tract through a novel oral delivery system.”

 

This collaboration reinforces Allergan’s commitment to building
a robust portfolio through Open Science. As with most of our agreements, we enter into partnerships which, through creative structures,
leverage the expertise of our partners to potentially deliver innovative treatments for improved patient care.

 

“Our fully-integrated microbiome platform reflects Assembly’s
commitment as one of the leaders in the exciting new field of microbiome therapeutics, which has the potential to address a range
of diseases in entirely new ways,” said Derek Small, Chief Executive Officer of Assembly. “We are delighted to enter
into this collaboration with Allergan, an innovator in GI, as we work together to realize the potential of microbiome therapies
and provide treatments to patients with serious GI disorders.”

 

“Inflammatory diseases of the GI tract, including Crohn’s
disease and ulcerative colitis, are debilitating conditions that remain poorly treated for many patients,” said Martin J.
Blaser, MD, Director of the New York University Human Microbiome Program. “Therapies leveraging the microbiome may be able
to address these disorders in fundamentally new ways. I am encouraged that microbiome innovators such as Assembly and Allergan
are working to convert their promising new approaches into clinically useful products to help these patients.”

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

The transaction is expected to close in the first quarter of 2017,
subject to customary closing conditions, including the expiration or early termination of the waiting period under the Hart-Scott-Rodino
Antitrust Improvements Act of 1976.

 

About Crohn’s Disease and Ulcerative Colitis1,2

 

Crohn’s disease and ulcerative colitis are chronic inflammatory
conditions of the gastrointestinal tract. Crohn’s disease most commonly affects the end of the small bowel (the ileum) and
the colon (also called the large intestine), but it may affect any part of the gastrointestinal (GI) tract, from the mouth to the
anus. Ulcerative colitis is limited to the colon. It is estimated that 1.6 million Americans and 2.2 million Europeans suffer from
Crohn's disease or ulcerative colitis. The majority of patients are diagnosed in young adulthood and these incidence rates continue
to rise, which will continue to place a significant burden on global healthcare systems.

 

About Allergan plc

 

Allergan plc (NYSE: AGN), headquartered in Dublin, Ireland, is a
bold, global pharmaceutical company and a leader in a new industry model – Growth Pharma.  Allergan is focused on developing,
manufacturing and commercializing branded pharmaceuticals, devices and biologic products for patients around the world.

 

Allergan markets a portfolio of leading brands and best-in-class
products for the central nervous system, eye care, medical aesthetics and dermatology, gastroenterology, women's health, urology
and anti-infective therapeutic categories.

 

Allergan is an industry leader in Open Science, the Company’s
R&D model, which defines our approach to identifying and developing game-changing ideas and innovation for better patient care.
This approach has led to Allergan building one of the broadest development pipelines in the pharmaceutical industry with 70+
mid-to-late stage pipeline programs in development.

 

Our Company’s success is powered by our more than 16,000 global
colleagues’ commitment to being Bold for Life. Together, we build bridges, power ideas, act fast and drive results for our
customers and patients around the world by always doing what is right.

 

With commercial operations in approximately 100 countries, Allergan
is committed to working with physicians, healthcare providers and patients to deliver innovative and meaningful treatments that
help people around the world live longer, healthier lives every day.

 

For more information, visit Allergan's website at www.Allergan.com.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

About Assembly Biosciences

 

Assembly Biosciences, Inc. is a clinical-stage public biotechnology
company developing two innovative platform programs: an HBV program advancing a new class of oral therapeutics for the treatment
of hepatitis B virus (HBV) infection and a microbiome program developing novel oral biotherapeutics designed to address diseases
associated with the microbiome. Assembly’s HBV program is advancing multiple drug candidates with the aim of increasing cure
rates in patients with chronic HBV. The company's microbiome program consists of a fully integrated platform that includes a robust
strain identification and selection process, methods for strain isolation and growth under current Good Manufacturing Practices
and a patent-pending delivery system, GEMICEL®, which allows for targeted oral delivery of live biologic and conventional therapies
to the lower gastrointestinal tract. Assembly is developing a robust pipeline of product candidates in multiple disease indications.
For more information, visit assemblybio.com.

 

Forward-Looking Statement 

 

Statements contained in this press release that refer to future
events or other non-historical facts are forward-looking statements that reflect Allergan's current perspective of existing trends
and information as of the date of this release. Except as expressly required by law, Allergan disclaims any intent or obligation
to update these forward-looking statements. Actual results may differ materially from Allergan's current expectations depending
upon a number of factors affecting Allergan's business. These factors include, among others, the difficulty of predicting future
clinical results based on prior clinical results; the timing or outcome of FDA approvals or actions, if any; the impact of competitive
products and pricing; market acceptance of and continued demand for Allergan's products; difficulties or delays in manufacturing;
and other risks and uncertainties detailed in Allergan's periodic public filings with the Securities and Exchange Commission, including
but not limited to Allergan's Annual Report on Form 10-K for the year ended December 31, 2015 and Quarterly Report on Form 10-Q
for the quarter ended June 30, 2016 (certain of such periodic public filings having been filed under the "Actavis plc"
name). Except as expressly required by law, Allergan disclaims any intent or obligation to update these forward-looking statements.

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

The information in this press release contains estimates and other
forward-looking statements regarding future events, including statements about the clinical and therapeutic potential of Assembly’s
development programs, its ability to receive payments from Allergan under the collaboration agreement and plans, strategies, and
intentions related to Assembly’s programs. Certain forward looking statements may be identified by reference to a future
period or periods or by use of forward-looking terminology such as "developing," "potential," "projected,"
"positioned," "eligible" or "may." Such forward-looking statements, which Assembly intends to be
covered by the safe harbor provisions contained in Section 27A of the Securities Act of 1933, as amended, and Section 21E of the
Securities Exchange Act of 1934, as amended, are just predictions and are subject to risks and uncertainties that could cause the
actual events or results to differ materially. These risks and uncertainties include, among others: the components, timing, cost
and results of clinical trials and other development activities involving Assembly’s product candidates (including those
licensed to Allergan); the unpredictability of the preclinical and clinical development of Assembly’s product candidates
and of the duration and results of regulatory review of those candidates by the FDA and foreign regulatory authorities; Assembly’s
anticipated capital expenditures, Assembly’s estimates regarding its capital requirements, and its need for future capital;
and the possible impairment of, or inability to obtain, intellectual property rights and the costs of obtaining such rights from
third parties. These and other potential risks and uncertainties that could cause actual results to differ from the results predicted
are more fully detailed under the heading "Risk Factors" in Assembly’s Annual Report on Form 10-K for the year
ended December 31, 2015, and Quarterly Report on Form 10-Q for the quarter ending September 30, 2016 filed with the Securities
and Exchange Commission. It is not possible for Assembly management to predict all risks nor can Assembly assess the impact of
all factors on its business or the extent to which any factor, or combination of factors, may cause actual results to differ materially
from those contained in any forward-looking statements Assembly may make. In light of these risks, uncertainties and assumptions,
the forward-looking events and circumstances discussed in this press release may not occur and actual results could differ materially
and adversely from those anticipated. Except as required by law, Assembly assumes no obligation to update publicly any forward-looking
statements, whether as a result of new information, future events or otherwise.

 

1 Crohn's & Colitis Foundation of America: What are
Crohn's Disease and Ulcerative Colitis?: http://www.ccfa.org/what-are-crohns-and-colitis/

 

2 Nature Reviews Gastroenterology & Hepatology 12,
720-727 (2015): http://www.nature.com/nrgastro/journal/v12/n12/full/nrgastro.2015.150.html

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

Schedule 8.5.2

 

Confidential Treatment of Agreement –
[Redacted Agreement]

 

[This schedule 8.5.2 is reflected in the form
of this agreement to which this Schedule is attached]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.
	 
	 

    
CONFIDENTIAL TREATMENT REQUESTED
BY ASSEMBLY BIOSCIENCES, INC.

    

 

Schedule 11.2

Exception to Reps & Warranties

 

These Schedules are qualified in their entirety by reference
to specific provisions of the Agreement and are not intended to constitute, and shall not be construed as constituting, any
representation or warranty of Assembly, except as and to the extent expressly provided in the Agreement. The representations
and warranties set forth in Sections 11.1 and 11.2 of the Agreement are the only representations and warranties of any kind
being made to Allergan. Matters, facts or items disclosed in any section of these Schedules shall be deemed to be disclosed
with respect to any other section of these Schedules.

 

[* * *]

 

    	[* * *] The confidential content of this Exhibit 10.1 has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.Exhibit 4.4

 

FORM
OF WARRANT AGREEMENT

 

Agreement made as of ______, 2017 between
National Energy Services Reunited Corp., a British Virgin Islands company, with offices at 777 Post Oak Blvd., Suite 800, Houston,
Texas 77056 (“Company”), and Continental Stock Transfer & Trust Company, a New York corporation, with offices at
17 Battery Place, New York, New York 10004 (the “Warrant Agent”).

 

WHEREAS, on February 9, 2017, the Company
has entered into that certain Private Placement Warrants Purchase Agreement (the “Private Placement Warrants Purchase Agreement”)
with NESR Holdings Ltd. (the “Sponsor”), pursuant to which the Sponsor will purchase 11,450,000 warrants in the aggregate,
simultaneously with the closing of the Public Offering (as defined below) bearing the legend set forth in Exhibit B hereto
(the “Private Warrants”), at a price of $0.50 per Private Warrant, to purchase one-half of one ordinary share of the
Company, no par value (“Ordinary Share”), at $5.75 per half share, subject to adjustment as described herein, upon
consummation of such private placement (“Private Offering”); and

 

WHEREAS, the Company is engaged in a public
offering (“Public Offering”) of Units and, in connection therewith, will issue and deliver up to 20,000,000 warrants
to purchase one-half of one share of the Company’s Ordinary Shares, at $5.75 per half share, subject to adjustment as described
herein (“Public Warrants” and together with the Private Warrants, the “Warrants”) to the public investors
in the Company’s proposed Public Offering; and

 

WHEREAS,
the Company has filed with the Securities and Exchange Commission (the “SEC”) a Registration Statement on Form S-1,
No. 333- 217006 (“Registration Statement”),
and prospectus (the “Prospectus”) for the registration, under the Securities Act of 1933, as amended (“Act”)
of, among other securities, the Public Warrants to be issued in the Public Offering; and

 

WHEREAS, the Company desires the Warrant
Agent to act on behalf of the Company, and the Warrant Agent is willing to so act, in connection with the issuance, registration,
transfer, exchange, redemption and exercise of the Warrants; and

 

WHEREAS, the Company desires to provide
for the form and provisions of the Warrants, the terms upon which they shall be issued and exercised, and the respective rights,
limitation of rights, and immunities of the Company, the Warrant Agent, and the holders of the Warrants; and

 

WHEREAS, all acts and things have been done
and performed which are necessary to make the Warrants, when executed on behalf of the Company and countersigned by or on behalf
of the Warrant Agent, as provided herein, the valid, binding and legal obligations of the Company, and to authorize the execution
and delivery of this Agreement.

 

NOW, THEREFORE, in consideration of the
mutual agreements herein contained, the parties hereto agree as follows:

 

1.           Appointment
of Warrant Agent. The Company hereby appoints the Warrant Agent to act as agent for the Company for the Warrants, and the Warrant
Agent hereby accepts such appointment and agrees to perform the same in accordance with the terms and conditions set forth in this
Agreement.

 

2.           Warrants.

 

2.1           Form
of Warrant. Each Warrant shall be issued in registered form only, shall be in substantially the form of Exhibit A hereto,
the provisions of which are incorporated herein and shall be signed by, or bear the facsimile signature of, the Chairman of the
Board or Chief Executive Officer and Treasurer, Secretary or Assistant Secretary of the Company and shall bear a facsimile of the
Company’s seal. In the event the person whose facsimile signature has been placed upon any Warrant shall have ceased to serve
in the capacity in which such person signed the Warrant before such Warrant is issued, it may be issued with the same effect as
if he or she had not ceased to be such at the date of issuance. All of the Public Warrants shall initially be represented by one
or more book-entry certificates deposited with The Depository Trust Company (the “Depositary”) and registered in the
name of Cede & Co., a nominee of the Depositary (each a “Book-Entry Warrant Certificate”).

 

     

     

    

 

2.2           Uncertificated
Warrants. Notwithstanding anything herein to the contrary, any Warrant, or portion thereof, may be issued as part of, and be
represented by, a Unit, and any Warrant may be issued in uncertificated or book-entry form through the Warrant Agent and/or the
facilities of the Depositary or other book-entry depositary system, in each case as determined by the Board of Directors of the
Company or by an authorized committee thereof. Any Warrant so issued shall have the same terms, force and effect as a certificated
Warrant that has been duly countersigned by the Warrant Agent in accordance with the terms of this Agreement.

 

2.3           Effect
of Countersignature. Unless and until countersigned by the Warrant Agent, either manually or by facsimile signature, pursuant
to this Agreement, a Warrant shall be invalid and of no effect and may not be exercised by the holder thereof.

 

2.4           Registration.

 

2.4.1           Warrant
Register. The Warrant Agent shall maintain books (“Warrant Register”) for the registration of original issuance
and the registration of transfer of the Warrants. Upon the initial issuance of the Warrants, the Warrant Agent shall issue and
register the Warrants in the names of the respective holders thereof in such denominations and otherwise in accordance with instructions
delivered to the Warrant Agent by the Company. Ownership of beneficial interests in the Public Warrants shall be shown on, and
the transfer of such ownership shall be effected through, records maintained by (i) the Depositary or its nominee for each Book-Entry
Warrant Certificate, or (ii) institutions that have accounts with the Depositary.

 

2.4.2           Registered
Holder. Prior to due presentment for registration of transfer of any Warrant, the Company and the Warrant Agent may deem and
treat the person in whose name such Warrant shall be registered upon the Warrant Register (“registered holder”) as
the absolute owner of such Warrant and of each Warrant represented thereby (notwithstanding any notation of ownership or other
writing on the Warrant Certificate made by anyone other than the Company or the Warrant Agent), for the purpose of any exercise
thereof, and for all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary.

 

2.5           Detachability
of Warrants. The securities comprising the Units will not be separately transferable until the fifty-second (52nd)
day after the date hereof or, if such 52nd day is not on a day on which banks in New York City are generally open
for business (including Saturdays, Sundays or federal holidays) (a “Business Day”), then on the immediately succeeding
Business Day following such date, unless Maxim Group LLC informs the Company of its decision to allow earlier separate trading,
but in no event will separate trading of the securities comprising the Units begin until (i) the Company files a Current Report
on Form 8-K which includes an audited balance sheet reflecting the receipt by the Company of the gross proceeds of the Public Offering
and (ii) the Company issues a press release announcing when such separate trading shall begin.

 

2.6           Private
Warrant Attributes. The Private Warrants will be issued in the same form as the Public Warrants but they (i) will be exercisable
either for cash or on a cashless basis at the holder’s option pursuant to Section 3.3.1(c) and (ii) will not be redeemable
by the Company, in either case as long as such warrants are held by the initial purchasers or their affiliates and permitted transferees
(as prescribed in Section 5.6 hereof). The provisions of this Section 2.6 may not be modified, amended or deleted without the prior
written consent of Maxim Group LLC.

 

3.           Terms
and Exercise of Warrants.

 

3.1           Warrant
Price. Each Warrant shall, when countersigned by the Warrant Agent, entitle the registered holder thereof, subject to the provisions
of such Warrant and of this Warrant Agreement, to purchase from the Company the number of Ordinary Shares stated therein, at the
price of $11.50 per whole share, subject to the adjustments provided in Section 4 hereof and in the last sentence of this Section
3.1. The term “Warrant Price” as used in this Warrant Agreement refers to the price per share at which Ordinary Shares
may be purchased at the time a Warrant is exercised. The Company in its sole discretion may lower the Warrant Price at any time
prior to the Expiration Date (as defined below) for a period of not less than 10 Business Days; provided, however, that the Company
shall provide at least 10 Business Days prior written notice of such reduction to registered holders of the Warrants; provided,
further, however, that any such reduction shall be applied consistently to all of the Warrants.

 

     

     

    

 

3.2           Duration
of Warrants. A Warrant may be exercised only during the period (“Exercise Period”) commencing on the later of _______,
2018, one year from the date of this agreement, 30 days after the consummation by the Company of a share exchange, share reconstruction
and amalgamation, purchase of all or substantially all of the assets, contractual arrangement, or other similar business combination
with one or more businesses or entities (“Business Combination”) (as described more fully in the Registration Statement
and Prospectus), and terminating at 5:00 p.m., New York City time on the earlier to occur of (i) five years after the consummation
by the Company of a Business Combination, (ii) the Redemption Date as provided in Section 6.2 of this Agreement (“Expiration
Date”); provided, however, that the exercise of any Warrant shall be subject to the satisfaction of any applicable conditions,
as set forth in Section 7.4 below. Except with respect to the right to receive the Redemption Price (as set forth in Section
6 hereunder), each Warrant not exercised on or before the Expiration Date shall become void, and all rights thereunder and all
rights in respect thereof under this Agreement shall cease at the close of business on the Expiration Date. The Company in its
sole discretion may extend the duration of the Warrants by delaying the Expiration Date; provided, however, that the Company will
provide written notice to registered holders of the Warrants of such extension of not less than 20 days.

 

3.3           Exercise
of Warrants.

 

3.3.1           Payment.
Subject to the provisions of the Warrant and this Warrant Agreement, a Warrant, when countersigned by the Warrant Agent either
manually or by facsimile signature, may be exercised by the registered holder thereof by surrendering it, at the office of the
Warrant Agent, or at the office of its successor as Warrant Agent, in New York City and the State of New York, with the subscription
form, as set forth in the Warrant, duly executed, and by paying in full the Warrant Price for each full Ordinary Share as to which
the Warrant is exercised and any and all applicable taxes due in connection with the exercise of the Warrant, as follows:

 

(a)          In
lawful money of the United States, in good certified check or good bank draft payable to the order of the Warrant Agent (or as
otherwise agreed to by the Company); or

 

(b)          in
the event of redemption pursuant to Section 6 hereof in which the Company’s management has elected to require all holders
of Warrants to exercise such Warrants on a “cashless basis,” by surrendering the Warrants for that number of Ordinary
Shares equal to the quotient obtained by dividing (x) the product of the number of Ordinary Shares underlying the Warrants, multiplied
by the difference between the Warrant Price and the “Fair Market Value” (defined below) by (y) the Fair Market Value.
Solely for purposes of this Section 3.3.1(b), the “Fair Market Value” shall mean the average reported last sale price
of the Ordinary Shares for the 10 trading days ending on the third trading day prior to the date on which the notice of redemption
is sent to holders of Warrants pursuant to Section 6 hereof; or

 

(c)          with
respect to any Private Warrants, so long as such Private Warrants are held by the initial purchasers or their affiliates and permitted
transferees (as prescribed in Section 5.6 hereof), by surrendering such Private Warrants for that number of Ordinary Shares equal
to the quotient obtained by dividing (x) the product of the number of Ordinary Shares underlying the Warrants, multiplied by the
difference between the exercise price of the Warrants and the “Fair Market Value” by (y) the Fair Market Value;
provided, however, that no cashless exercise shall be permitted unless the Fair Market Value is higher than the exercise price.
Solely for purposes of this Section 3.3.1(c), the “Fair Market Value” shall mean the average reported last sale price
of the Ordinary Shares for the 10 trading days ending on the day prior to the Company’s receipt of the applicable exercise
notice; or

 

(d)          in
the event the post-effective amendment or registration statement required by Section 7.4 hereof is not effective and current,
then during the period beginning on the 91st day after the closing of the Business Combination and ending upon
the effectiveness of such post-effective amendment or registration statement, and during any other period after such date of effectiveness
when the Company shall fail to have maintained an effective registration statement covering the Ordinary Shares issuable upon exercise
of the Warrants, by surrendering such Warrants for that number of Ordinary Shares equal to the quotient obtained by dividing (x)
the product of the number of Ordinary Shares underlying the Warrants, multiplied by the difference between the exercise price of
the Warrants and the “Fair Market Value” by (y) the Fair Market Value; provided, however, that no cashless exercise
shall be permitted unless the Fair Market Value is higher than the exercise price. Solely for purposes of this Section 3.3.1(d),
the “Fair Market Value” shall mean the average reported last sale price of the Ordinary Shares for the 10 trading days
ending on the day prior to the date of exercise.

 

     

     

    

 

3.3.2           Issuance
of Certificates. As soon as practicable after the exercise of any Warrant and the clearance of the funds in payment of the
Warrant Price (if any), the Company shall issue to the registered holder of such Warrant a certificate or certificates for the
number of full Ordinary Shares to which he is entitled, registered in such name or names as may be directed by him, her or it,
and if such Warrant shall not have been exercised in full, a new countersigned Warrant for the number of shares as to which such
Warrant shall not have been exercised. Subject to Section 4.7 of this Agreement, a registered holder of Warrants may exercise its
Warrants only for a whole number of Ordinary Shares (i.e., only an even number of Warrants may be exercised at any given time by
a registered holder). Notwithstanding the foregoing, in no event will the Company be required to net cash settle the Warrant exercise.
Warrants may not be exercised by, or securities issued to, any registered holder in any state in which such exercise would be unlawful.

 

3.3.3           Valid
Issuance. All Ordinary Shares issued upon the proper exercise of a Warrant in conformity with this Agreement shall be validly
issued, fully paid and nonassessable.

 

3.3.4           Date
of Issuance. Each person in whose name any such certificate for Ordinary Shares is issued shall for all purposes be deemed
to have become the holder of record of such shares on the date on which the Warrant was surrendered and payment of the Warrant
Price was made, irrespective of the date of delivery of such certificate, except that, if the date of such surrender and payment
is a date when the share transfer books of the Company are closed, such person shall be deemed to have become the holder of such
shares at the close of business on the next succeeding date on which the share transfer books are open.

 

3.3.5           Maximum
Percentage. A holder of Warrants may notify the Company in writing in the event it elects to be subject to the provisions contained
in this Section 3.3.5. No holder of Warrants shall be subject to this Section 3.3.5 unless he, she or it makes such election. If
the election is made by a holder, the Warrant Agent shall not effect the exercise of this Warrant, and such holder shall not have
the right to exercise this Warrant, to the extent that after giving effect to such exercise, such person (together with such person’s
affiliates), to the Warrant Agent’s actual knowledge, would beneficially own in excess of nine and eight-tenths percent (9.8%)
(the “Maximum Percentage”) of the Ordinary Shares outstanding immediately after giving effect to such exercise. For
purposes of the foregoing sentence, the aggregate number of Ordinary Shares beneficially owned by such person and its affiliates
shall include the number of Ordinary Shares issuable upon exercise of the Warrant with respect to which the determination of such
sentence is being made, but shall exclude Ordinary Shares which would be issuable upon (x) exercise of the remaining, unexercised
portion of the Warrant beneficially owned by such person and its affiliates and (y) exercise or conversion of the unexercised or
unconverted portion of any other securities of the Company beneficially owned by such person and its affiliates (including, without
limitation, any convertible notes or convertible preferred shares or warrants) subject to a limitation on conversion or exercise
analogous to the limitation contained herein. Except as set forth in the preceding sentence, for purposes of this paragraph, beneficial
ownership shall be calculated in accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended (the “Exchange
Act”). For purposes of the Warrant, in determining the number of outstanding Ordinary Shares, the holder may rely on the
number of outstanding Ordinary Shares as reflected in (1) the Company’s most recent annual report on Form 10-K, and quarterly
report on Form 10-Q, Form 8-K or other public filing with the SEC as the case may be, (2) a more recent public announcement by
the Company or (3) any other notice by the Company or the Transfer Agent setting forth the number of Ordinary Shares outstanding.
For any reason at any time, upon the written request of the holder, the Company shall, within two (2) Business Days, confirm orally
and in writing to such holder the number of Ordinary Shares then outstanding. In any case, the number of outstanding Ordinary Shares
shall be determined after giving effect to the conversion or exercise of securities of the Company by the holder and its affiliates
since the date as of which such number of outstanding Ordinary Shares was reported. By written notice to the Company, the holder
may from time to time increase or decrease the Maximum Percentage applicable to such holder to any other percentage specified in
such notice; provided that any such increase will not be effective until the sixty-first (61st) day after such notice is delivered
to the Company.

 

     

     

    

 

3.3.6.Delivery
of the Exercise Price. The Warrant Agent shall forward funds received for warrant exercises in a given month by the 5th business
day of the following month by wire transfer to an account designated by the Company.

  

4.           Adjustments.

 

4.1           Share
Dividends - Split Ups. If after the date hereof, the number of outstanding Ordinary Shares is increased by a share dividend
payable in Ordinary Shares, or by a split up of the Ordinary Shares, or other similar event, then, on the effective date of such
share dividend, split up or similar event, the number of Ordinary Shares issuable on exercise of each Warrant shall be increased
in proportion to such increase in outstanding Ordinary Shares. A rights offering to all holders of the Ordinary Shares entitling
holders to purchase Ordinary Shares at a price less than the “Fair Market Value” (as defined below) shall be deemed
a share dividend of a number of Ordinary Shares equal to the product of (i) the number of Ordinary Shares actually sold in such
rights offering (or issuable under any other equity securities sold in such rights offering that are convertible into or exercisable
for the Ordinary Shares) multiplied by (ii) one (1) minus the quotient of (x) the price per share of Ordinary Shares paid in such
rights offering divided by (y) the Fair Market Value. For purposes of this subsection 4.1, (i) if the rights offering is for securities
convertible into or exercisable for the Ordinary Shares, in determining the price payable for the Ordinary Shares, there shall
be taken into account any consideration received for such rights, as well as any additional amount payable upon exercise or conversion
and (ii) “Fair Market Value” means the volume weighted average price of the Ordinary Shares as reported during the
ten (10) trading day period ending on the trading day prior to the first date on which the Ordinary Shares trades on the applicable
exchange or in the applicable market, regular way, with the right to receive such rights.

 

4.2           Aggregation
of Shares. If after the date hereof, the number of outstanding Ordinary Shares is decreased by a consolidation, combination,
reverse share split or reclassification of the Ordinary Shares or other similar event, then, on the effective date of such consolidation,
combination, reverse share split, reclassification or similar event, the number of Ordinary Shares issuable on exercise of each
Warrant shall be decreased in proportion to such decrease in outstanding Ordinary Shares.

 

4.3           Extraordinary
Dividends. If the Company, at any time while the Warrants (or rights to purchase the Warrants) are outstanding and unexpired,
shall pay a dividend or make a distribution in cash, securities or other assets to the holders of the Ordinary Shares on account
of such Ordinary Shares (or other shares of the Company’s capital stock into which the Warrants are convertible), other than
(a) as described in subsection 4.1 above, (b) Ordinary Cash Dividends (as defined below), (c) to satisfy the conversion rights
of the holders of the Ordinary Shares in connection with a proposed initial Business Combination, (d) as a result of the repurchase
of Ordinary Shares by the Company in connection with an initial Business Combination or as otherwise permitted by the Investment
Management Trust Agreement between the Company and the Warrant Agent dated of even date herewith or (e) in connection with the
Company’s liquidation and the distribution of its assets upon its failure to consummate a Business Combination (any such
non-excluded event being referred to herein as an “Extraordinary Dividend”), then the Warrant Price shall be decreased,
effective immediately after the effective date of such Extraordinary Dividend, by the amount of cash and the fair market value
(as determined by the Company’s board of directors, in good faith) of any securities or other assets paid on each share of
the Ordinary Shares in respect of such Extraordinary Dividend. For purposes of this subsection 4.3, “Ordinary Cash Dividends”
means any cash dividend or cash distribution which, when combined on a per share basis with the per share amounts of all other
cash dividends and cash distributions paid on the Ordinary Shares during the 365-day period ending on the date of declaration of
such dividend or distribution (as adjusted to appropriately reflect any of the events referred to in other subsections of this
Section 4 and excluding cash dividends or cash distributions that resulted in an adjustment to the Warrant Price or to the number
of Ordinary Shares issuable on exercise of each Warrant) does not exceed $0.50 (being 5% of the offering price of the Units in
the Offering).

 

4.4           Adjustments
in Exercise Price. Whenever the number of Ordinary Shares purchasable upon the exercise of the Warrants is adjusted, as provided
in Section 4.1 and 4.2 above, the Warrant Price shall be adjusted (to the nearest cent) by multiplying such Warrant Price immediately
prior to such adjustment by a fraction (x) the numerator of which shall be the number of Ordinary Shares purchasable upon the exercise
of the Warrants immediately prior to such adjustment, and (y) the denominator of which shall be the number of Ordinary Shares so
purchasable immediately thereafter.

 

     

     

    

 

4.5           Replacement
of Securities upon Reorganization, etc. In case of any reclassification or reorganization of the outstanding Ordinary Shares
(other than a change covered by Section 4.1 or 4.2 hereof or that solely affects the par value of such Ordinary Shares), or in
the case of any merger or consolidation of the Company with or into another corporation (other than a consolidation or merger in
which the Company is the continuing corporation and that does not result in any reclassification or reorganization of the outstanding
Ordinary Shares), or in the case of any sale or conveyance to another corporation or entity of the assets or other property of
the Company as an entirety or substantially as an entirety in connection with which the Company is dissolved, the Warrant holders
shall thereafter have the right to purchase and receive, upon the basis and upon the terms and conditions specified in the Warrants
and in lieu of the Ordinary Shares of the Company immediately theretofore purchasable and receivable upon the exercise of the rights
represented thereby, the kind and amount of shares or other securities or property (including cash) receivable upon such reclassification,
reorganization, merger or consolidation, or upon a dissolution following any such sale or transfer, that the Warrant holder would
have received if such Warrant holder had exercised his, her or its Warrant(s) immediately prior to such event (the “Alternative
Issuance” ); provided, however, that (i) if the holders of the Ordinary Shares were entitled to exercise
a right of election as to the kind or amount of securities, cash or other assets receivable upon such consolidation or merger,
then the kind and amount of securities, cash or other assets constituting the Alternative Issuance for which each Warrant shall
become exercisable shall be deemed to be the weighted average of the kind and amount received per share by the holders of the Ordinary
Shares in such consolidation or merger that affirmatively make such election, and (ii) if a tender, exchange or redemption offer
shall have been made to and accepted by the holders of the Ordinary Shares (other than a tender, exchange or redemption offer made
by the Company in connection with redemption rights held by shareholders of the Company as provided for in the Company’s
amended and restated memorandum and articles of association or as a result of the repurchase of Ordinary Shares by the Company
if a proposed initial Business Combination is presented to the shareholders of the Company for approval) under circumstances in
which, upon completion of such tender or exchange offer, the maker thereof, together with members of any group (within the meaning
of Rule 13d-5(b)(1) under the Exchange Act) of which such maker is a part, and together with any affiliate or associate of such
maker (within the meaning of Rule 12b-2 under the Exchange Act) and any members of any such group of which any such affiliate or
associate is a part, own beneficially (within the meaning of Rule 13d-3 under the Exchange Act) more than 50% of the outstanding
Ordinary Shares, the holder of a Warrant shall be entitled to receive as the Alternative Issuance, the highest amount of cash,
securities or other property to which such holder would actually have been entitled as a shareholder if such Warrant holder had
exercised the Warrant prior to the expiration of such tender or exchange offer, accepted such offer and all of the Ordinary Shares
held by such holder had been purchased pursuant to such tender or exchange offer, subject to adjustments (from and after the consummation
of such tender or exchange offer) as nearly equivalent as possible to the adjustments provided for in this Section 4; provided, further,
that if less than 70% of the consideration receivable by the holders of the Ordinary Shares in the applicable event is payable
in the form of Ordinary Shares in the successor entity that is listed for trading on a national securities exchange or is quoted
in an established over-the-counter market, or is to be so listed for trading or quoted immediately following such event, and if
the registered holder properly exercises the Warrant within thirty (30) days following the public disclosure of the consummation
of such applicable event by the Company pursuant to a Current Report on Form 8-K filed with the SEC, the Warrant Price shall be
reduced by an amount (in dollars) equal to the difference of (i) the Warrant Price in effect prior to such reduction minus (ii)
(A) the Per Share Consideration (as defined below) (but in no event less than zero) minus (B) the Black-Scholes Warrant Value (as
defined below). The “Black-Scholes Warrant Value” means the value of a Warrant immediately prior to the consummation
of the applicable event based on the Black-Scholes Warrant Model for a Capped American Call on Bloomberg Financial Markets (“Bloomberg”).
For purposes of calculating such amount, (1) Section 6 of this Agreement shall be taken into account, (2) the
price of each Ordinary Share shall be the volume weighted average price of the Ordinary Shares as reported during the ten (10)
trading day period ending on the trading day prior to the effective date of the applicable event, (3) the assumed volatility shall
be the 90 day volatility obtained from the HVT function on Bloomberg determined as of the trading day immediately prior to the
day of the announcement of the applicable event, and (4) the assumed risk-free interest rate shall correspond to the U.S. Treasury
rate for a period equal to the remaining term of the Warrant. “Per Share Consideration” means (i) if the consideration
paid to holders of the Ordinary Shares consists exclusively of cash, the amount of such cash per Ordinary Share, and (ii) in all
other cases, the volume weighted average price of the Ordinary Shares as reported during the ten (10) trading day period ending
on the trading day prior to the effective date of the applicable event. If any reclassification or reorganization also results
in a change in Ordinary Shares covered by Section 4.1 or 4.2, then such adjustment shall be made pursuant to Sections 4.1, 4.2,
4.4 and this Section 4.5. The provisions of this Section 4.5 shall similarly apply to successive reclassifications, reorganizations,
mergers or consolidations, sales or other transfers. In no event will the Warrant Price be reduced to less than the par value per
share issuable upon exercise of such Warrant.

  

     

     

    

 

4.6           Notices
of Changes in Warrant. Upon every adjustment of the Warrant Price or the number of shares issuable upon exercise of a Warrant,
the Company shall give written notice thereof to the Warrant Agent, which notice shall state the Warrant Price resulting from such
adjustment and the increase or decrease, if any, in the number of shares purchasable at such price upon the exercise of a Warrant,
setting forth in reasonable detail the method of calculation and the facts upon which such calculation is based. Upon the occurrence
of any event specified in Sections 4.1, 4.2, 4.3, 4.4 or 4.5, then, in any such event, the Company shall give written notice to
each Warrant holder, at the last address set forth for such holder in the warrant register, of the record date or the effective
date of the event. Failure to give such notice, or any defect therein, shall not affect the legality or validity of such event.

 

4.7           No
Fractional Shares. Notwithstanding any provision contained in this Warrant Agreement to the contrary, the Company shall not
issue fractional shares upon exercise of Warrants. If, by reason of any adjustment made pursuant to this Section 4, the holder
of any Warrant would be entitled, upon the exercise of such Warrant, to receive a fractional interest in a share, the Company shall,
upon such exercise, round up to the nearest whole number the number of the Ordinary Shares to be issued to the Warrant holder.

 

4.8           Form
of Warrant. The form of Warrant need not be changed because of any adjustment pursuant to this Section 4, and Warrants issued
after such adjustment may state the same Warrant Price and the same number of shares as is stated in the Warrants initially issued
pursuant to this Agreement; provided, however, that the Company may at any time in its sole discretion make any change in the form
of Warrant that the Company may deem appropriate and that does not affect the substance thereof, and any Warrant thereafter issued
or countersigned, whether in exchange or substitution for an outstanding Warrant or otherwise, may be in the form as so changed.

 

4.9           Other
Events. In case any event shall occur affecting the Company as to which none of the provisions of preceding subsections of
this Section 4 are strictly applicable, but which would require an adjustment to the terms of the Warrants in order to (i) avoid
an adverse impact on the Warrants and (ii) effectuate the intent and purpose of this Section 4, then, in each such case, the Company
shall appoint a firm of independent public accountants, investment banking or other appraisal firm of recognized national standing,
which shall give its opinion as to whether or not any adjustment to the rights represented by the Warrants is necessary to effectuate
the intent and purpose of this Section 4 and, if such firm determines that an adjustment is necessary, the terms of such adjustment.
The Company shall adjust the terms of the Warrants in a manner that is consistent with any adjustment recommended in such opinion.

 

5.           Transfer
and Exchange of Warrants.

 

5.1           Registration
of Transfer. The Warrant Agent shall register the transfer, from time to time, of any outstanding Warrant upon the Warrant
Register, upon surrender of such Warrant for transfer, properly endorsed with signatures properly guaranteed and accompanied by
appropriate instructions for transfer. Upon any such transfer, a new Warrant representing an equal aggregate number of Warrants
shall be issued and the old Warrant shall be cancelled by the Warrant Agent. The Warrants so cancelled shall be delivered by the
Warrant Agent to the Company from time to time upon request.

 

5.2           Procedure
for Surrender of Warrants. Warrants may be surrendered to the Warrant Agent, together with a written request for exchange or
transfer, and thereupon the Warrant Agent shall issue in exchange therefor one or more new Warrants as requested by the registered
holder of the Warrants so surrendered, representing an equal aggregate number of Warrants; provided, however, that in the event
that a Warrant surrendered for transfer bears a restrictive legend, the Warrant Agent shall not cancel such Warrant and issue new
Warrants in exchange therefor until the Warrant Agent has received an opinion of counsel for the Company stating that such transfer
may be made and indicating whether the new Warrants must also bear a restrictive legend.

 

     

     

    

 

5.3           Fractional
Warrants. The Warrant Agent shall not be required to effect any registration of transfer or exchange which will result in the
issuance of a warrant certificate for a fraction of a warrant.

 

5.4           Service
Charges. No service charge shall be made for any exchange or registration of transfer of Warrants.

 

5.5           Warrant
Execution and Countersignature. The Warrant Agent is hereby authorized to countersign, either manually or by facsimile signature,
and to deliver, in accordance with the terms of this Agreement, the Warrants required to be issued pursuant to the provisions of
this Section 5, and the Company, whenever required by the Warrant Agent, will supply the Warrant Agent with Warrants duly executed
on behalf of the Company for such purpose.

  

5.6           Private
Warrants. The Warrant Agent shall not register any transfer of Private Warrants until 30 days after the consummation by the
Company of a Business Combination, except for transfers (1) amongst holders of Private Warrants, to the Company’s officers,
directors, and employees or to a holder’s officers, directors, members, employees and affiliates, (2) to relatives and trusts
for estate planning purposes, (3) by virtue of the laws of descent and distribution upon death of such person, (4) pursuant to
a qualified domestic relations order, (5) by certain pledges to secure obligations incurred in connection with purchases of the
Company’s securities, (6) by private sales made at or prior to the consummation of a Business Combination at prices no greater
than the price at which the Private Warrants were originally purchased, or (7) to the Company for no value for cancellation in
connection with the consummation of a Business Combination, in each case (except for clause 7) on the condition that prior to such
registration for transfer, the Warrant Agent shall be presented with written documentation pursuant to which each transferee or
the trustee or legal guardian for such transferee agrees to be bound by the restrictions on transfer set forth in the Private Placement
Warrants Purchase Agreement pursuant to which the original holder of the Private Warrants purchased such securities.

 

6.           Redemption.

 

6.1           Redemption.
Subject to Section 6.4 hereof, not less than all of the outstanding Warrants may be redeemed, at the option of the Company, at
any time while they are exercisable and prior to their expiration, at the office of the Warrant Agent, upon the notice referred
to in Section 6.2, at the price of $.01 per Warrant (“Redemption Price”), provided that the last sales price of the
Ordinary Shares has been at least $21.00 per share (subject to adjustment in accordance with Section 4 hereof), on each of twenty
(20) trading days within any thirty (30) trading day period (“30-Day Trading Period”) ending on the third Business
Day prior to the date on which notice of redemption is given and provided further that there is a current registration statement
in effect with respect to the Ordinary Shares underlying the Warrants commencing five Business Days prior to the 30-Day Trading
Period and continuing each day thereafter until the Redemption Date (defined below).

 

6.2           Date
Fixed for, and Notice of, Redemption. In the event the Company shall elect to redeem all of the Warrants, the Company shall
fix a date for the redemption (the “Redemption Date”). Notice of redemption shall be mailed by first class mail, postage
prepaid, by the Company not less than 30 days prior to the Redemption Date to the registered holders of the Warrants to be redeemed
at their last addresses as they shall appear on the registration books. Any notice mailed in the manner herein provided shall be
conclusively presumed to have been duly given whether or not the registered holder received such notice.

 

6.3           Exercise
After Notice of Redemption. The Warrants may be exercised, for cash (or on a “cashless basis” in accordance with
Section 3 of this Agreement) at any time after notice of redemption shall have been given by the Company pursuant to Section 6.2
hereof and prior to the Redemption Date. In the event the Company determines to require all holders of Warrants to exercise their
Warrants on a “cashless basis” pursuant to Section 3.3.1(b), the notice of redemption will contain the information
necessary to calculate the number of Ordinary Shares to be received upon exercise of the Warrants, including the “Fair Market
Value” in such case. On and after the Redemption Date, the record holder of the Warrants shall have no further rights except
to receive, upon surrender of the Warrants, the Redemption Price.

 

     

     

    

 

6.4           Exclusion
of Private Warrants. The Company agrees that the redemption rights provided in this Section 6 shall not apply to
the Private Warrants if at the time of the redemption such Private Warrants continue to be held by the Sponsor or its permitted
transferees. However, once such Private Warrants are transferred (other than to permitted transferees under Section 5.6),
the Company may redeem the Private Warrants, provided that the criteria for redemption are met, including the opportunity of the
holder of such Private Warrants to exercise the Private Warrants prior to redemption pursuant to Section 6 hereof. Private
Warrants that are transferred to persons other than permitted transferees shall upon such transfer cease to be Private Warrants
and shall become Public Warrants under this Agreement.

 

7.           Other
Provisions Relating to Rights of Holders of Warrants.

 

7.1           No
Rights as Shareholder. A Warrant does not entitle the registered holder thereof to any of the rights of a shareholder of the
Company, including, without limitation, the right to receive dividends, or other distributions, exercise any preemptive rights
to vote or to consent or to receive notice as shareholders in respect of the meetings of shareholders or the election of directors
of the Company or any other matter.

 

7.2           Lost,
Stolen, Mutilated, or Destroyed Warrants. If any Warrant is lost, stolen, mutilated, or destroyed, the Company and the Warrant
Agent may on such terms as to indemnify or otherwise as they may in their discretion impose (which shall, in the case of a mutilated
Warrant, include the surrender thereof), issue a new Warrant of like denomination, tenor, and date as the Warrant so lost, stolen,
mutilated, or destroyed. Any such new Warrant shall constitute a substitute contractual obligation of the Company, whether or not
the allegedly lost, stolen, mutilated, or destroyed Warrant shall be at any time enforceable by anyone.

 

7.3           Reservation
of Ordinary Shares. The Company shall at all times reserve and keep available a number of its authorized but unissued Ordinary
Shares that will be sufficient to permit the exercise in full of all outstanding Warrants issued pursuant to this Agreement.

 

7.4           Registration
of Ordinary Shares. The Company agrees that as soon as practicable, but in no event later than the closing of a Business Combination,
it shall use its best efforts to file with the SEC a post-effective amendment to the Registration Statement, or a new registration
statement, for the registration, under the Act, of the Ordinary Shares issuable upon exercise of the Warrants, and it shall use
its best efforts to take such action as is necessary to qualify for sale, in those states in which the Warrants were initially
offered by the Company, the Ordinary Shares issuable upon exercise of the Warrants. In either case, the Company will use its best
efforts to cause the same to become effective and to maintain the effectiveness of such registration statement until the expiration
of the Warrants in accordance with the provisions of this Agreement. In addition, the Company agrees to use its best efforts to
register such securities under the blue sky laws of the states of residence of the exercising warrant holders to the extent an
exemption is not available. If any such post-effective amendment or registration statement has not been declared effective by the
90-day anniversary following the closing of the Business Combination, holders of the Warrants shall have the right, during the
period beginning on the 91st day after the closing of the Business Combination and ending upon such post-effective
amendment or registration statement being declared effective by the SEC, and during any other period after such date of effectiveness
when the Company shall fail to have maintained an effective registration statement covering the Ordinary Shares issuable upon exercise
of the Warrants, to exercise such Warrants on a “cashless basis” as determined in accordance with Section 3.3.1(d).
The Company shall provide the Warrant Agent with an opinion of counsel for the Company (which shall be an outside law firm with
securities law experience) stating that (i) the issuance of Ordinary Shares upon exercise of the Warrants on a cashless basis in
accordance with this Section 7.4 is not required to be registered under the Act and (ii) the Ordinary Shares issued upon such exercise
will be freely tradable under U.S. federal securities laws by anyone who is not an affiliate (as such term is defined in Rule 144
under the Act) of the Company and, accordingly, will not be required to bear a restrictive legend. For the avoidance of any doubt,
unless and until all of the Warrants have been exercised on a cashless basis, the Company shall continue to be obligated to comply
with its registration obligations under the first three sentences of this Section 7.4.

 

8.          Concerning
the Warrant Agent and Other Matters.

 

8.1           Payment
of Taxes. The Company will from time to time promptly pay all taxes and charges that may be imposed upon the Company or the
Warrant Agent in respect of the issuance or delivery of Ordinary Shares upon the exercise of Warrants, but the Company shall not
be obligated to pay any transfer taxes in respect of the Warrants or such shares.

 

     

     

    

 

8.2           Resignation,
Consolidation, or Merger of Warrant Agent.

 

8.2.1           Appointment
of Successor Warrant Agent. The Warrant Agent, or any successor to it hereafter appointed, may (i) resign its duties and be
discharged from all further duties and liabilities hereunder after giving sixty (60) days’ notice in writing to the Company
or (ii) be removed by the Company with no penalty or termination fee to the Company by written notice to the Warrant Agent stating
such removal. If the office of the Warrant Agent becomes vacant by resignation, removal or incapacity to act or otherwise, the
Company shall appoint in writing a successor Warrant Agent in place of the Warrant Agent. If the Company shall fail to make such
appointment within a period of 30 days after it has been notified in writing of such resignation or incapacity by the Warrant Agent
or by the holder of the Warrant (who shall, with such notice, submit his Warrant for inspection by the Company), or within a period
of 10 days after it notifies the Warrant Agent of its removal, then the holder of any Warrant may apply to the Supreme Court of
the State of New York for the County of New York for the appointment of a successor Warrant Agent at the Company’s cost.
Notwithstanding the foregoing, no such failure by the Company to appoint a successor will inhibit the Warrant Agent’s resignation
hereunder. Any successor Warrant Agent, whether appointed by the Company or by such court, shall be a corporation organized and
existing under the laws of the State of New York, in good standing and having its principal office in the Borough of Manhattan,
City and State of New York, and authorized under such laws to exercise corporate trust powers and subject to supervision or examination
by federal or state authority. After appointment, any successor Warrant Agent shall be vested with all the authority, powers, rights,
immunities, duties, and obligations of its predecessor Warrant Agent with like effect as if originally named as Warrant Agent hereunder,
without any further act or deed; but if for any reason it becomes necessary or appropriate, the predecessor Warrant Agent shall
execute and deliver, at the expense of the Company, an instrument transferring to such successor Warrant Agent all the authority,
powers, and rights of such predecessor Warrant Agent hereunder; and upon request of any successor Warrant Agent the Company shall
make, execute, acknowledge, and deliver any and all instruments in writing for more fully and effectually vesting in and confirming
to such successor Warrant Agent all such authority, powers, rights, immunities, duties, and obligations.

 

8.2.2           Notice
of Successor Warrant Agent. In the event a successor Warrant Agent shall be appointed, the Company shall give notice thereof
to the predecessor Warrant Agent and the transfer agent for the Ordinary Shares not later than the effective date of any such appointment.

 

8.2.3           Merger
or Consolidation of Warrant Agent. Any corporation into which the Warrant Agent may be merged or with which it may be consolidated
or any corporation resulting from any merger or consolidation to which the Warrant Agent shall be a party shall be the successor
Warrant Agent under this Agreement without any further act.

 

8.3           Fees
and Expenses of Warrant Agent.

 

8.3.1           Remuneration.
The Company agrees to pay the Warrant Agent for its services as such Warrant Agent hereunder and will reimburse the Warrant Agent
upon demand for all expenditures that the Warrant Agent may reasonably incur in the execution of its duties hereunder; provided
that in no event shall the amounts owed by the Company under this Agreement be greater than as set forth on the schedule manually
agreed to in writing by the Company and the Warrant Agent, which schedule may be modified only upon written consent of both parties;
and provided, further, that, upon removal of the Warrant Agent by the Company, the Company shall owe no further fees or expenses
for any work done by the Warrant Agent following the date of such removal. The Warrant Agent acknowledges and agrees that it fully
understands the scope of the work required under this Agreement and that all the costs and fees related to the same are included
in the terms of this Agreement and related fee schedule, and if there are any other costs or fees incurred or charged by the Warrant
Agent in connection with this Agreement that are not included therein they will be borne by the Warrant Agent.

 

8.3.2           Further
Assurances. The Company agrees to perform, execute, acknowledge, and deliver or cause to be performed, executed, acknowledged,
and delivered all such further and other acts, instruments, and assurances as may reasonably be required by the Warrant Agent for
the carrying out or performing of the provisions of this Agreement.

 

     

     

    

 

8.4           Liability
of Warrant Agent.

 

8.4.1           Reliance
on Company Statement. Whenever in the performance of its duties under this Warrant Agreement, the Warrant Agent shall deem
it necessary or desirable that any fact or matter be proved or established by the Company prior to taking or suffering any action
hereunder, such fact or matter (unless other evidence in respect thereof be herein specifically prescribed) may be deemed to be
conclusively proved and established by a statement signed by the Chief Executive Officer or Chairman of the Board of the Company
and delivered to the Warrant Agent. The Warrant Agent may rely upon such statement for any action taken or suffered in good faith
by it pursuant to the provisions of this Agreement.

 

8.4.2           Indemnity.
The Company agrees to indemnify the Warrant Agent and save it harmless against any and all liabilities, including judgments, costs
and reasonable counsel fees, for anything done or omitted by the Warrant Agent in the execution of this Agreement, including, without
limitation, acting upon the instructions of any authorized representative of the Company, except as a result of the Warrant Agent’s
negligence, willful misconduct, or bad faith. The Warrant Agent agrees to indemnify the Company and save it harmless against
any and all liabilities, including judgments, costs and reasonable counsel fees, for anything done or omitted by the Warrant Agent
in connection with this Agreement, resulting from the Warrant Agent’s negligence, willful misconduct or bad faith.

 

8.4.3           Exclusions.
The Warrant Agent shall have no responsibility with respect to the validity of this Agreement or with respect to the validity or
execution of any Warrant (except its countersignature thereof); nor shall it be responsible for any breach by the Company of any
covenant or condition contained in this Agreement or in any Warrant; nor shall it be responsible to make any adjustments required
under the provisions of Section 4 hereof or responsible for the manner, method, or amount of any such adjustment or the ascertaining
of the existence of facts that would require any such adjustment; nor shall it by any act hereunder be deemed to make any representation
or warranty as to the authorization or reservation of any Ordinary Shares to be issued pursuant to this Agreement or any Warrant
or as to whether any Ordinary Shares will when issued be valid and fully paid and nonassessable.

  

8.5           Acceptance
of Agency. The Warrant Agent hereby accepts the agency established by this Agreement and agrees to perform the same upon the
terms and conditions herein set forth and among other things, shall account promptly to the Company with respect to Warrants exercised
and concurrently account for, and pay to the Company, all moneys received by the Warrant Agent for the purchase of Ordinary Shares
through the exercise of Warrants.

 

8.6           Waiver.
The Warrant Agent hereby waives any right of set-off or any other right, title, interest or claim of any kind (“Claim”)
in, or to any distribution of, the Trust Account (as defined in that certain Investment Management Trust Agreement, dated as of
the date hereof, by and between the Company and the Warrant Agent as trustee thereunder) and hereby agrees not to seek recourse,
reimbursement, payment or satisfaction for any Claim against the Trust Account for any reason whatsoever.

 

9.          Miscellaneous
Provisions.

 

9.1           Successors.
All the covenants and provisions of this Agreement by or for the benefit of the Company or the Warrant Agent shall bind and inure
to the benefit of their respective successors and assigns.

 

9.2           Notices.
Any notice, statement or demand authorized by this Warrant Agreement to be given or made by the Warrant Agent or by the holder
of any Warrant to or on the Company shall be sufficiently given when so delivered if by hand or overnight delivery or if sent by
certified mail or private courier service within five days after deposit of such notice, postage prepaid, addressed (until another
address is filed in writing by the Company with the Warrant Agent), as follows:

 

National Energy Services Reunited Corp.

777 Post Oak Blvd., Suite 800

Houston, Texas 77056

Attn: Sherif Foda, Chief Executive Officer

 

     

     

    

 

Any notice, statement or demand authorized by this Agreement
to be given or made by the holder of any Warrant or by the Company to or on the Warrant Agent shall be sufficiently given when
so delivered if by hand or overnight delivery or if sent by certified mail or private courier service within five days after deposit
of such notice, postage prepaid, addressed (until another address is filed in writing by the Warrant Agent with the Company), as
follows:

 

Continental Stock Transfer & Trust Company

17 Battery Place

New York, New York 10004

Attn: Compliance Department

 

with a copy in each case to:

 

Ellenoff Grossman & Schole LLP

1345 Avenue of the Americas

New York, New York 10105

Attn: Stuart Neuhauser, Esq.

 

and

 

Loeb & Loeb LLP

345 Park Avenue

New York, New York 10154

Attn: Mitchell S. Nussbaum, Esq.

  

9.3           Applicable
Law. The validity, interpretation, and performance of this Agreement and of the Warrants shall be governed in all respects
by the laws of the State of New York, without giving effect to conflicts of law principles that would result in the application
of the substantive laws of another jurisdiction. The Company hereby agrees that any action, proceeding or claim against it arising
out of or relating in any way to this Agreement shall be brought and enforced in the courts of the State of New York or the United
States District Court for the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction shall
be exclusive. The Company hereby waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient
forum. Any such process or summons to be served upon the Company may be served by transmitting a copy thereof by registered or
certified mail, return receipt requested, postage prepaid, addressed to it at the address set forth in Section 9.2 hereof. Such
mailing shall be deemed personal service and shall be legal and binding upon the Company in any action, proceeding or claim.

 

9.4           Persons
Having Rights under this Agreement. Nothing in this Agreement expressed and nothing that may be implied from any of the provisions
hereof is intended, or shall be construed, to confer upon, or give to, any person or corporation other than the parties hereto
and the registered holders of the Warrants, any right, remedy, or claim under or by reason of this Warrant Agreement or of any
covenant, condition, stipulation, promise, or agreement hereof. All covenants, conditions, stipulations, promises, and agreements
contained in this Warrant Agreement shall be for the sole and exclusive benefit of the parties hereto and their successors and
assigns and of the registered holders of the Warrants.

 

9.5           Examination
of the Warrant Agreement. A copy of this Agreement shall be available at all reasonable times at the office of the Warrant
Agent in New York City and the State of New York, for inspection by the registered holder of any Warrant. The Warrant Agent may
require any such holder to submit his Warrant for inspection by it.

 

9.6           Counterparts.
This Agreement may be executed in any number of original or facsimile counterparts and each of such counterparts shall for all
purposes be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument.

 

9.7           Effect
of Headings. The Section headings herein are for convenience only and are not part of this Warrant Agreement and shall not
affect the interpretation thereof.

 

     

     

    

 

9.8           Amendments.
This Agreement may be amended by the parties hereto without the consent of any registered holder for the purpose of curing any
ambiguity, or of curing, correcting or supplementing any defective provision contained herein or adding or changing any other provisions
with respect to matters or questions arising under this Agreement as the parties may deem necessary or desirable and that the parties
deem shall not adversely affect the interest of the registered holders. All other modifications or amendments, including any amendment
to increase the Warrant Price or shorten the Exercise Period, shall require the written consent or vote of the registered holders
of a majority of the then outstanding Warrants. Notwithstanding the foregoing, the Company may lower the Warrant Price or extend
the duration of the Exercise Period pursuant to Sections 3.1 and 3.2, respectively, without the consent of the registered holders.

 

9.9           Severability.
This Warrant Agreement shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof shall
not affect the validity or enforceability of this Warrant Agreement or of any other term or provision hereof. Furthermore, in lieu
of any such invalid or unenforceable term or provision, the parties hereto intend that there shall be added as a part of this Warrant
Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible and be valid and enforceable.

 

Exhibit A Form of Warrant Certificate

Exhibit B Legend – Private Warrants

 

IN WITNESS WHEREOF, this Agreement has been
duly executed by the parties hereto as of the day and year first above written.

 

	 	NATIONAL ENERGY SERVICES REUNITED CORP.
	 	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:
	 	 
	 	CONTINENTAL STOCK TRANSFER & TRUST COMPANY
	 	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:

 

     

     

    

 

	 	 	Exhibit A	 	 
	 	 	 	 	 
	NUMBER	 	(SEE REVERSE SIDE FOR LEGEND) 	 	WARRANTS
	________ -	 	THIS WARRANT WILL BE VOID IF NOT EXERCISED PRIOR TO THE EXPIRATION DATE (DEFINED BELOW)	 	 

 

NATIONAL ENERGY SERVICES REUNITED CORP.

 

CUSIP G6375R 115

 

WARRANT

 

THIS CERTIFIES THAT, for value received

 

is the registered holder of a warrant or warrants (the “Warrant”),
expiring at 5:00 p.m., New York City time, on the five year anniversary of the completion by National Energy Services Reunited
Corp., a British Virgin Islands company (the “Company”), of a, share exchange, share reconstruction and amalgamation,
purchase of all or substantially all of the assets, contractual arrangement, or other similar business combination with one or
more businesses or entities (a “Business Combination”), to purchase one-half (1/2) of one fully paid and non-assessable
ordinary share, no par value (“Shares”), of the Company for each Warrant evidenced by this Warrant Certificate. The
Warrant entitles the holder thereof to purchase from the Company, commencing on the later of (a) _________, 2018,12 months from
the date of the final prospectus and (b) thirty (30) days after the Company’s completion a Business Combination, such number
of Shares of the Company at the price of $5.75 per half share (the “Warrant Price”); provided however, that a Warrant
may not be exercised for a fractional share, so that only an even number of Warrants may be exercised at any given time, upon surrender
of this Warrant Certificate and payment of the Warrant Price at the office or agency of the Warrant Agent, Continental Stock Transfer
& Trust Company, but only subject to the conditions set forth herein and in the Warrant Agreement between the Company and Continental
Stock Transfer & Trust Company. In no event will the Company be required to net cash settle any warrant exercise. The Warrant
Agreement provides that upon the occurrence of certain events the Warrant Price and the number of Shares purchasable hereunder,
set forth on the face hereof, may, subject to certain conditions, be adjusted. The term Warrant Price as used in this Warrant Certificate
refers to the price per Share at which Shares may be purchased at the time the Warrant is exercised.

 

Upon any exercise of the Warrant for less
than the total number of full Shares provided for herein, there shall be issued to the registered holder hereof or the registered
holder’s assignee a new Warrant Certificate covering the number of Shares for which the Warrant has not been exercised.

 

Warrant Certificates, when surrendered at
the office or agency of the Warrant Agent by the registered holder hereof in person or by attorney duly authorized in writing,
may be exchanged in the manner and subject to the limitations provided in the Warrant Agreement, but without payment of any service
charge, for another Warrant Certificate or Warrant Certificates of like tenor and evidencing in the aggregate a like number of
Warrants.

 

Upon due presentment for registration of
transfer of the Warrant Certificate at the office or agency of the Warrant Agent, a new Warrant Certificate or Warrant Certificates
of like tenor and evidencing in the aggregate a like number of Warrants shall be issued to the transferee in exchange for this
Warrant Certificate, subject to the limitations provided in the Warrant Agreement, without charge except for any applicable tax
or other governmental charge.

 

The Company and the Warrant Agent may deem
and treat the registered holder as the absolute owner of this Warrant Certificate (notwithstanding any notation of ownership or
other writing hereon made by anyone), for the purpose of any exercise hereof, of any distribution to the registered holder, and
for all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary.

 

This Warrant does not entitle the registered
holder to any of the rights of a shareholder of the Company.

 

     

     

    

 

The Company reserves the right to call the
Warrant at any time prior to its exercise with a notice of call in writing to the holders of record of the Warrant, giving at least
30 days’ notice of such call, at any time while the Warrant is exercisable, if the last sale price of the Shares has been
at least $21.00 per share on each of 20 trading days within any 30 trading day period (the “30-day trading period”)
ending on the third business day prior to the date on which notice of such call is given and if, and only if, there is a current
registration statement in effect with respect to the Shares underlying the Warrants commencing five business days prior to the
30-day trading period and continuing each day thereafter until the date of redemption. The call price of the Warrants is to be
$.01 per Warrant. Any Warrant either not exercised or tendered back to the Company by the end of the date specified in the notice
of call shall be canceled on the books of the Company and have no further value except for the $.01 call price.

 

	By	 	 	 
	 	President	Secretary

 

     

     

    

 

SUBSCRIPTION FORM

To Be Executed by the Registered Holder in Order to Exercise Warrants

 

The undersigned Registered Holder irrevocably elects to exercise
______________ Warrants represented by this Warrant Certificate, and to purchase the ordinary shares issuable upon the exercise
of such Warrants, and requests that Certificates for such shares shall be issued in the name of

 

	 
	(PLEASE TYPE OR PRINT NAME AND ADDRESS)
	 
	 
	 
	 
	 
	(SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER)
	and be delivered to
	 
	(PLEASE PRINT OR TYPE NAME AND ADDRESS)
	 

 

and, if such number of Warrants shall not be all the Warrants
evidenced by this Warrant Certificate, that a new Warrant Certificate for the balance of such Warrants be registered in the name
of, and delivered to, the Registered Holder at the address stated below:

 

	Dated: 	 	 	 
	 	 	(SIGNATURE)
	 	 	 
	 	 	 
	 	 	(ADDRESS)
	 	 	 
	 	 	 
	 	 	 
	 	 	(TAX IDENTIFICATION NUMBER)

 

     

     

    

 

ASSIGNMENT

To Be Executed by the Registered Holder in Order to Assign Warrants

 

For Value Received, _______________________ hereby sell, assign,
and transfer unto

 

	 
	(PLEASE TYPE OR PRINT NAME AND ADDRESS)
	 
	 
	 
	 
	 
	(SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER)
	and be delivered to
	 
	(PLEASE PRINT OR TYPE NAME AND ADDRESS)

 

______________________ of the Warrants represented by this Warrant
Certificate, and hereby irrevocably constitute and appoint _________________________________ Attorney to transfer this Warrant
Certificate on the books of the Company, with full power of substitution in the premises.

 

	Dated: 	 	 	 
	 	 	(SIGNATURE)

 

The signature to the
assignment of the Subscription Form must correspond to the name written upon the face of this Warrant Certificate in every particular,
without alteration or enlargement or any change whatsoever, and must be guaranteed by a commercial bank or trust company or a member
firm of the NYSE Amex, New York Stock Exchange, Pacific Stock Exchange or Chicago Stock Exchange.

 

     

     

    

 

Exhibit B

 

“THESE SECURITIES (i) HAVE NOT BEEN REGISTERED
UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND THESE SECURITIES MAY NOT BE
OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT(A) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT FILED UNDER THE SECURITIES
ACT, (B) TO A NON-U.S. PERSON IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH RULE 903 OR RULE 904 OF REGULATION S UNDER THE SECURITIES
ACT, (C) PURSUANT TO THE RESALE LIMITATIONS SET FORTH IN RULE 905 OF REGULATIONS S UNDER THE SECURITIES ACT, (D) PURSUANT TO AN
EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE) OR (E) PURSUANT TO ANY OTHER EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, IN EACH CASE IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY
STATE OF THE UNITED STATES OR ANY OTHER JURISDICTION. HEDGING TRANSACTIONS INVOLVING THESE SECURITIES MAY NOT BE CONDUCTED UNLESS
IN COMPLIANCE WITH THE SECURITIES ACT.”

 

“THE SECURITIES REPRESENTED BY THIS
CERTIFICATE ARE SUBJECT TO A LETTER AGREEMENT AND MAY NOT BE OFFERED, SOLD, TRANSFERRED, PLEDGED OR OTHERWISE DISPOSED DURING
THE TERM OF THE LETTER AGREEMENT, EXCEPT IN ACCORDANCE WITH THE TERMS THEREOF.”

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00270-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00270-of-00352.parquet"}]]