Document:

EX-10.1

 Exhibit 10.1 

Confidential Materials omitted and filed separately with the 

Securities and Exchange Commission. Double asterisks denote omission. 

LICENSE AGREEMENT 
 by
and between 
 KARYOPHARM THERAPEUTICS INC. 

and 
 ANTENGENE
THERAPEUTICS LIMITED 
 Confidential – Execution Copy 

 TABLE OF CONTENTS 

 

							
	 1.
	  	 DEFINITIONS
	  	 	1	 
			
	 2.
	  	 DEVELOPMENT
	  	 	14	 
			
	 3.
	  	 REGULATORY MATTERS
	  	 	20	 
			
	 4.
	  	 COMMERCIALIZATION OF THE LICENSED PRODUCTS
	  	 	22	 
			
	 5.
	  	 GOVERNANCE
	  	 	25	 
			
	 6.
	  	 MANUFACTURE AND SUPPLY
	  	 	29	 
			
	 7.
	  	 LICENSES
	  	 	31	 
			
	 8.
	  	 CERTAIN FINANCIAL TERMS
	  	 	35	 
			
	 9.
	  	 CONFIDENTIALITY AND PUBLICATION
	  	 	43	 
			
	 10.
	  	 REPRESENTATIONS, WARRANTIES AND COVENANTS; DISCLAIMER
	  	 	47	 
			
	 11.
	  	 INDEMNIFICATION; LIMITATION OF LIABILITY; INSURANCE
	  	 	51	 
			
	 12.
	  	 INTELLECTUAL PROPERTY OWNERSHIP, PROTECTION AND RELATED MATTERS; BRAND NAME
	  	 	52	 
			
	 13.
	  	 TERM AND TERMINATION
	  	 	60	 
			
	 14.
	  	 MISCELLANEOUS
	  	 	64	 

 SCHEDULES 
  

			
	 Schedule 1.28
	  	 Excluded Indications

		
	 Schedule 1.49
	  	 Karyopharm Third Party Agreements

		
	 Schedule 1.52
	  	 Eltanexor (KPT-8602)

		
	 Schedule 1.53
	  	 KPT-9274

		
	 Schedule 1.75
	  	 Selinexor (KPT-330)

		
	 Schedule 1.82
	  	 Verdinexor (KPT-335)

		
	 Schedule 2.1
	  	 Overview Plan

		
	 Schedule 10.2.2
	  	 Karyopharm Patents

 Confidential 

 LICENSE AGREEMENT 

THIS LICENSE AGREEMENT (this “Agreement”), effective as of May 23, 2018 (the “Effective Date”), is made
and entered into by and between Karyopharm Therapeutics Inc., a corporation organized and existing under the laws of the State of Delaware, having an address at 85 Wells Avenue, Suite 210, Newton, MA 02459 USA (“Karyopharm”), and
Antengene Therapeutics Limited, a corporation organized and existing under the laws of Hong Kong, having an address at Rm. 19C, Lockhart Ctr., 301-307 Lockhart Rd., Wan Chai, Hong Kong
(“Antengene”). Karyopharm and Antengene are sometimes referred to herein individually as a “Party” and collectively as the “Parties.” 

RECITALS: 

WHEREAS, Karyopharm owns or Controls certain intellectual property relating to the Licensed Compounds and the Licensed Products (each
as defined below); 
 WHEREAS, Antengene desires to Develop and Commercialize Licensed Compounds and Licensed Products in the Field
in the Antengene Territory (each as defined below); 
 WHEREAS, Karyopharm and Antengene believe that a license for such purpose on
the terms and conditions of this Agreement would be desirable. 
 NOW, THEREFORE, in consideration of the foregoing premises and the
mutual covenants herein contained, the Parties hereby agree as follows: 
  

	1.	DEFINITIONS 

 Unless specifically set forth to the contrary herein, the following terms,
whether used in the singular or plural, shall have the respective meanings set forth below: 

1.1    “Affiliate” means, as to a specified Person, another Person that, directly or indirectly,
controls, is controlled by, or is under common control with the Person specified, for so long as such control continues. An entity will be regarded as in control of another entity if: (a) it owns, directly or indirectly, more than fifty percent
(50%) of the voting securities or capital stock of such entity, or has other comparable ownership interest with respect to any entity other than a corporation; or (b) it possesses, directly or indirectly, the power to direct or cause the
direction of the management and policies of the corporation or non-corporate business entity, as applicable, whether through the ownership or control of voting securities, by contract or otherwise. Solely for
the purpose of Section 8, Antengene Corporation Co. Ltd., a corporation organized and existing under the laws of China, having an address at Suite 704, 999 West Zhongshan Road, Shanghai, P.R. China, is an Affiliate of Antengene during the Term.

 1.2     “Annual Net Sales” means the Net Sales generated over any given Antengene
Fiscal Year. 
 1.3    “Antengene Fiscal Year” means each successive period of twelve
(12) calendar months commencing on January 1st of a particular Calendar Year and ending on December 31st. 

 1.4    “Antengene
Know-How” means, subject to applicable law, (a) all Know-How, which, as of the Effective Date and during the Term, is Controlled by Antengene and its
Affiliates, which (i) are not generally known, (ii) are not Covered by Antengene Patent Rights, (iii) relates to any Licensed Compound and/or Licensed Product and (iv) are necessary or useful for the research, Development,
Manufacture, having Manufactured, use and/or Commercialization of each Licensed Compound and Licensed Product in the Field and (b) any Know-How generated in the course of the Global Clinical Study which
is related to a commercial product or a product in clinical development in either case owned or licensed to Antengene; provided, however, that Antengene Know-How excludes Joint Know-How. 
 1.5    “Antengene Patent Rights” means all Patent
Rights Controlled by Antengene and its Affiliates, as of the Effective Date and during the Term, which claim or Cover, are necessary or useful for or would be practiced by the research, Development, Manufacture, having Manufactured, use and/or
Commercialization of Licensed Products in the Field; provided, however, that Antengene Patent Rights excludes Joint Patent Rights. 

1.6    “Antengene Post-Registration Studies” means any clinical studies of a Licensed
Product conducted by Antengene or any of its Related Parties following receipt of Regulatory Approval for a Licensed Product necessary to maintain its Regulatory Approval. 

1.7     “Antengene Technology” means, collectively, Antengene
Know-How, Antengene Patent Rights and Antengene’s interest in Joint IP. 

1.8    “Antengene Territory” means the following countries, as may be amended in accordance with
this Agreement: For Selinexor and Eltanexor: Mainland China and Macau. For KPT-9274 and Verdinexor: Mainland China, Taiwan, Hong Kong, Macau, South Korea, Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar,
Philippines, Singapore, Thailand, and Vietnam. 
 1.9    “Back-Up
Compound” means, with respect to a Licensed Compound, any compound that (a) is Developed by Karyopharm for the diagnosis, treatment and/or prevention of cancer in humans, (b) inhibits the nuclear export protein Exportin 1, or
XPO1, and (c) is designated by Karyopharm as a back-up compound to such Licensed Compound in accordance with Section 2.6.2. 

1.10    “Business Day” means any day other than a day which is a Saturday, a Sunday, any day banks
are authorized or required to be closed in the Boston, Massachusetts, United States or Shanghai, China or any day within Karyopharm’s corporate holidays (for Karyopharm’s obligations) or Antengene’s corporate holidays (for
Antengene’s obligations). 
 1.11    “Calendar Quarter” means the respective periods of
three (3) consecutive calendar months ending on March 31, June 30, September 30, and December 31 of each Calendar Year; provided that the first Calendar Quarter of the Term shall begin on the Effective Date and
end on the first to occur of March 31, June 30, September 30 or December 31 thereafter and the last Calendar Quarter of the Term shall end on the last day of the Term. 

1.12    “Calendar Year” means each successive period of twelve (12) calendar months
commencing on January 1 and ending on December 31; provided that the first Calendar Year of the Term shall begin on the Effective Date and end on the first December 31 thereafter and the last Calendar Year of the Term shall
end on the last day of the Term. 

  

					
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 1.13    “CDE” means the Center of Drug Evaluation,
Mainland China and any successor Governmental Authority having substantially the same function. 

1.14    “CDISC” means Clinical Data Interchange Standards Consortium which is an interdisciplinary
nonprofit organization that establishes international standards for data collection, interchange, application, and storage for the purpose of promoting interoperation of clinical research data. 

1.15     “Clinical Data” means all information relating to Licensed Compounds and/or
Licensed Products made, collected or otherwise generated in the performance of or in connection with any Clinical Study, including any data, reports and results relating thereto (including clinical data and other related information generated in
compliance with CDISC standards). 
 1.16    “Clinical Study” means a clinical trial in humans,
including a Phase I Study, Phase II Study, Phase III Study, an Antengene Post-Registration Study, a Karyopharm post-registration study or a Global Clinical Study. 

1.17    “Combination Product” means any pharmaceutical product containing both a Licensed Product
component and one or more other active pharmaceutical ingredients. 
 1.18    “Commence” or
“Commencement” means, with respect to a Clinical Study of a Licensed Product, the first dosing of the first human subject with such Licensed Product in such Clinical Study. 

1.19    “Commercialization” or “Commercialize” means any and all activities
directed to marketing, promoting, distributing, importing, exporting, offering to sell and/or selling a Licensed Product and activities directed to obtaining pricing and reimbursement approvals, as applicable. 

1.20    “Commercially Reasonable Efforts” means the carrying out of obligations in a diligent and
sustained manner using such effort and employing such resources as would normally be exerted or employed by a company of similar size and similar operations in the biopharmaceutical industry for a product that is of similar market potential at a
similar stage in its Development or product life, taking into account all relevant factors, including the potential profitability of the product, the costs and risks of Developing, Manufacturing, having Manufactured, use and Commercializing the
product, scientific, safety and regulatory concerns, product profile, the competitiveness of the marketplace and the proprietary position of the product. 

Without limiting the foregoing, 

(a)    in relation to Development activities, including for purposes of obtaining Regulatory Approval of a
product, “Commercially Reasonable Efforts” require that such Party: (i) assign responsibility for the relevant activities to specific employees who are responsible for progress and monitor such progress on a regular basis;
(ii) set and consistently seek to achieve specific and meaningful objectives and timelines for carrying out such activities; and (iii) consistently make and implement decisions and allocate resources consistent with the efforts described
above; and 

  

					
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 (b)    in relation to requiring Related Party to conduct
certain activities under this Agreement, “Commercially Reasonable Efforts” require that (i) to the extent that such Related Party is its Affiliate or Sublicensee under this Agreement, each Party oblige such Related Party to accept
terms and conditions equivalent to those set forth in this Agreement, (ii) to the extent that such Related Party is a Third Party Licensee each Party negotiate with such Related Party and use good faith efforts to persuade it to accept terms
and conditions, which, to the maximum extent, will be consistent with those set forth in this Agreement and (iii) each Party exercise all of its rights and performs the obligations under any agreement between such Party and such Related Party
in a commercially appropriate and timely manner so that the purpose of this Agreement contemplated in each Section will be achieved. 

1.21    “Confidential Information” means any and all information and data, including all
scientific, non-clinical, pre-clinical, clinical, regulatory, Manufacturing, marketing, financial, trade secret and commercial information or Data, whether communicated
in writing or orally or by any other method, which is provided by or on behalf of one Party or any of its Related Parties (the “Disclosing Party”) to the other Party or any of its Related Parties (the “Receiving
Party”) in connection with this Agreement. Notwithstanding anything to the contrary set forth herein, (a) Karyopharm Technology (other than Joint IP) is the Confidential Information of Karyopharm; (b) Antengene Technology (other
than Joint IP) is the Confidential Information of Antengene; and (c) Joint IP which has not yet been publicly disclosed shall be deemed to be the Confidential Information of both Parties; and (d) the terms of this Agreement shall be deemed
to be the Confidential Information of both Parties. All information and data disclosed prior to the Effective Date by or on behalf of either Party under, and subject to, the Confidentiality Agreement, dated as of March 6, 2018, as amended,
between the Parties (the “Prior CDA”) shall be deemed the Confidential Information hereunder and such Party shall be deemed the Disclosing Party of such information and data hereunder and the other Party shall be deemed the
Receiving Party hereunder such that, for the avoidance of doubt, effective as of the Effective Date, the treatment of Confidential Information disclosed pursuant to the Prior CDA shall be governed by the terms and condition of this Agreement.
“Confidential Information” shall not include information or data, to the extent that such information or data: 

1.21.1    is lawfully in the Receiving Party’s possession prior to disclosure by the Disclosing
Party and was not acquired directly or indirectly from Disclosing Party, as documented by the Receiving Party’s business records; 

1.21.2    is generally known to the public prior to its receipt by the Receiving Party, or
thereafter becomes generally known to the public through no fault of the Receiving Party or any of its Related Parties with whom the Receiving Party shared the Confidential Information; 

1.21.3    is subsequently disclosed to the Receiving Party by a Third Party that lawfully has
possession of and the right to disclose such Confidential Information without the breach of any contractual, legal or fiduciary obligation to the Disclosing Party or any Third Party and provided that such Third Party is not disclosing on behalf of
the Disclosing Party; or 

  

					
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 1.21.4    is independently developed by the Receiving
Party without use of or reference to Disclosing Party’s Confidential Information, as documented by the Receiving Party’s business records. 

1.22    “Control” means, subject to the provisions of Section 14.1, with respect to a Party
and/or its Related Party, as the case may be, and any Know-How, Patent Right or other intellectual property right, the possession (whether by ownership or license, other than a license granted to such Party
pursuant to this Agreement) of the ability of such Party or any such Related Party to transfer, grant access to, or grant a license or sublicense of, such Know-How, Patent Right or other intellectual property
right as provided for herein without violating the terms of any agreement or other arrangement with any Third Party.  

1.23    “Cost of Manufacturing” means, to the extent that Manufacturing of a Licensed Compound,
Licensed Product or any component thereof is performed by a Party itself or by its Affiliate, the actual consolidated, fully burdened cost incurred by such a Party and its Affiliates to Manufacture such a Licensed Compound, Licensed Product or any
component thereof, including: (a) direct labor costs (salaries, wages, incentive compensation, share-based compensation and employee benefits); (b) direct materials and packaging costs; (c) operating costs of facilities and equipment,
excluding any surplus or idle capacity costs; (d) a charge for depreciation, repairs and maintenance costs of facilities and equipment; (e) quality and in-process control costs; (f) a charge for
overhead costs for raw material and manufacturing administration and management, materials management, storage and handling, and manufacturing and employee training; (g) charges for spoilage, scrap, rework costs and expired goods; and
(h) inbound and outbound freight, shipping insurance, excise taxes and customs duties; in each of the above cases to the extent reasonably allocable to Manufacture of such Licensed Compound, Licensed Product or component as determined in
accordance with GAAP or IFRS, as applicable, consistently applied. 
 1.24    “Cover,”
“Covering” or “Covers” means that in the absence of ownership of or a license granted under a Valid Claim, the Development, Manufacture, having Manufactured, use or Commercialization of a Licensed Compound or a
Licensed Product would infringe such Valid Claim (or, in the case of a Valid Claim that has not yet issued, would infringe such Valid Claim if it were to issue). 

1.25    “Data” means any and all scientific, technical, test and patient exposure data
pertaining to any Licensed Compound or Licensed Product that are necessary or useful for the Development, Manufacture, having Manufactured, use and/or Commercialization of each Licensed Compound and Licensed Product and that are Controlled by
Antengene and/or its Related Parties or Controlled by Karyopharm and/or its Related Parties, including but not limited to research data, clinical pharmacology data, non-clinical data, pre-clinical data and Clinical Data. 
 1.26    “Development”
or “Develop” means non-clinical, pre-clinical and clinical research and development activities, including the design or identification of a compound,
drug metabolism and pharmacokinetics, translational research, toxicology, pharmacology toxicology studies, statistical analysis and report writing, pre-clinical testing, formulation development, Clinical

  

					
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Studies, regulatory affairs (including preparation for NDA submission and other submission-related activities), product approval and registration activities, and all other activities necessary to
seek, obtain and maintain Regulatory Approval; provided, however, that Development shall not include Commercialization and Manufacturing. 

1.27    “Executive Officer” means the Chief Executive Officer or his or her designee in the case
of Karyopharm, and Chief Executive Officer or his or her designee in the case of Antengene. 

1.28    “Field” means for Selinexor, Eltanexor, and
KPT-9274: the diagnosis, treatment and/or prevention of cancer in humans; and for Verdinexor: the diagnosis, treatment and/or prevention of all indications in humans excluding cancer, precancer, malignant and
benign tumors, and other proliferative or neoplastic disorders and except for the indications as listed on Schedule 1.28, however, provided, that, subject to Section 8.12, the Field of Verdinexor shall be extended to the diagnosis,
treatment and/or prevention of cancer in humans only in Mainland China and Macau, if Karyopharm initiates clinical development of Verdinexor or licenses any Third Party to Develop Verdinexor for the diagnosis, treatment and/or prevention of cancer
in humans in any territory. 
 1.29    “First Commercial Sale” means, with respect to a country
in the Antengene Territory, the first sale for end use or consumption of the Licensed Product in such country after all Regulatory Approvals legally required for such sale have been granted by the Regulatory Authority of such country or, if
Regulatory Approval is not required, after the date on which sales are permitted by applicable Law. 

1.30    “GAAP” means generally accepted accounting principles of the United States. 

1.31    “GCP” means the current standards for clinical studies for pharmaceuticals, as set forth
in the International Conference on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use (“ICH”) guidelines and applicable regulations promulgated thereunder, as amended from time to time. 

1.32    “Global Clinical Study” means a combined Phase I Study and Phase II Study, a combined
Phase II Study and Phase III Study, a Phase II Study, a Phase III Study or a Phase IV post-approval study, of a Licensed Product in the Field which includes sufficient clinical sites and/or patients to achieve Regulatory Approval in both the
Antengene Territory and the Karyopharm Territory for the Indication associated with such Clinical Study. 

1.33    “Global Common Costs” means the direct development costs that are incurred by a Party in
connection with the Global Common Activity. 
 1.34    “GLP” means the current standards for
laboratory activities for pharmaceuticals, as set forth in the FDA’s Good Laboratory Practice regulations or the Good Laboratory Practice principles of the Organization for Economic Co-Operation and
Development, as amended from time to time, and such standards of good laboratory practice as are required by Governmental Authorities in countries in which a Licensed Product is intended to be sold, to the extent such standards are not less
stringent than United States Good Laboratory Practice. 

  

					
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 1.35    “GMP” means all Laws and guidelines
applicable to Manufacture of the Licensed Compound or Licensed Product, including (a) the FD&C Act (21 U.S.C. 321 et seq.); (b) relevant United States regulations in Title 21 of the United States Code of Federal Regulations (including Parts
11, 210, and 211); (c) European Community Directives 2001/83/EC and 2003/94/EC; (d) the EU Guidelines to Good Manufacturing Practice Medicinal Products for Human and Veterinary Use, as set out in Volume 4 of the European Commission’s Rules
governing medicinal products in the EU; (e) ICH, Q7 Good Manufacturing Practice Guidance for Active Pharmaceutical Ingredients; (f) Good Manufacturing Practice for Drugs (former Ministry of Health of Mainland China, as amended
October 19, 2010); (g) similar standards and Laws to those in (a) through (e), as are in effect at the time of Manufacture of the Licensed Compound and/or Licensed Product; and (h) all additional Regulatory Authority documents or
regulations that replace, amend, modify, supplant or complement any of the foregoing. 

1.36    “Governmental Authority” means any multinational, federal, national, state, provincial,
local or other entity, office, commission, bureau, agency, political subdivision, instrumentality, branch, department, authority, board, court, arbitral or other tribunal, official or officer, exercising executive, judicial, legislative, police,
regulatory, administrative or taxing authority or functions of any nature pertaining to government. 

1.37    “IFRS” means International Financial Reporting Standards. 

1.38    “IND” means an Investigational New Drug application, Clinical Trial Application or similar
application or submission for approval to conduct human clinical investigations filed with or submitted to a Regulatory Authority in conformance with the requirements of such Regulatory Authority. 

1.39    “Indication” means the particular medical condition or disease, and, for cancer, an
indication by tumor type but not by line therapy of each tumor or cancer. By way of explanation, (a) an “Indication” shall be considered the same if the subject cancer has the same organ of origin even if they are, for example,
of a different histologic or genetic subtype, a different cell type or a different line of therapy, and (b) “Indication” shall be considered different if the subject cancers have different organs of origin. 

1.40    “Investigator Sponsored Clinical Study” means a clinical study or research of a Licensed
Product in the Field that is sponsored and conducted by a physician, physician group or other Third Party not acting on behalf of a Party or its Related Party and who does not have a license from a Party or its Related Party to Commercialize such
Licensed Product, pursuant to an IND owned by such Third Party in the case of a clinical study, and with respect to which a Party or its Related Party provides clinical supplies of the Licensed Product, funding or other support for such clinical
study or research. 
 1.41    “Joint IP” means, collectively, Joint Patent Rights and Joint Know-How. 
 1.42    “Joint
Know-How” means (a) any Know-How generated in course of the Global Clinical Study which is related to the combination of a Licensed Product and a
commercial product or product in clinical development in either case owned by or licensed to Antengene and (b) any Know-How that is (i) not solely related to Licensed Product or a commercial product
or 

  

					
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product in clinical development in either case owned by or licensed to Antengene and (ii) first made or identified, discovered or developed jointly by director(s), officer(s), employee(s),
agent(s) or consultant(s) acting on behalf of Karyopharm or its Affiliates, on the one hand, and director(s), officer(s),employee(s), agent(s) or consultant(s) acting on behalf of Antengene or its Affiliates, on the other hand, including Know-How jointly generated in the course of the Global Clinical Study in the Antengene Territory. 

1.43    “Joint Operating Committee” or “JOC” means the joint operating committee
as more fully described in Section 5.1. 
 1.44    “Joint Patent Rights” means any Patent
Rights that (a) Cover Joint Know-How and (b) are Controlled by Karyopharm and Antengene. 

1.45     “Karyopharm Know-How” means any Know-How, as of the Effective Date and during the Term, Controlled by Karyopharm and/or any of its Affiliates, which (a) are not generally known, (b) are not Covered by a Karyopharm Patent Rights,
(c) relates to any Licensed Compound and/or Licensed Product and (d) are necessary or useful for the research, Development, Manufacture, having Manufactured, use and/or Commercialization of each Licensed Compound and Licensed Product in
the Field; provided, however, that Karyopharm Know-How excludes the Joint Know-How. 

1.46    “Karyopharm Patent Rights” means all Patent Rights which, as of the Effective Date of and
during the Term, are Controlled by Karyopharm and/or any of its Affiliates, and which claim or Cover, are necessary or useful for or would be practiced by the research, Development, Manufacture, having Manufactured, use, and/or Commercialization of
each Licensed Compound and Licensed Product in the Field; provided, however, that Karyopharm Patent Rights excludes Joint Patent Rights. 

1.47    “Karyopharm Technology” means, collectively, Karyopharm
Know-How, Karyopharm Patent Rights and Karyopharm’s interest in Joint IP. 

1.48    “Karyopharm Territory” means, for Selinexor and Eltanexor, all countries and territories
of the world other than the Antengene Territory or the Ono Territory and for KPT-9274 and Verdinexor, all countries and territories of the world other than the Antengene Territory. 

1.49    “Karyopharm Third Party Agreements” means (a) those agreements listed on Schedule
1.49 and (b) any agreements entered into as of the Effective Date by Karyopharm or any of its Affiliates pursuant to which Karyopharm Controls any Karyopharm Technology or receives funding to develop any Karyopharm Technology or any
Licensed Compound or Licensed Product (unless solely for use outside the Field). 

1.50    “Knowledge” means actual knowledge of department head and working team member(s) on function-by-function basis for or on behalf of each Party. 

1.51    “Know-How” means all technical information, know-how and data, including trade secrets, inventions (whether patentable or not), discoveries, methods, specifications, processes, expertise, technology, Data, other
non-clinical, pre-clinical and Clinical Data and results 

  

					
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(including pharmacological, toxicological, biological, chemical, physical, safety and manufacturing data and results), analytical and quality control data and results, regulatory filings and
documents, and other information. Know-How excludes in any event any Patent Rights. 

1.52    “KPT-8602” means the compound known as KPT-8602, which is described on Schedule 1.52. KPT-8602 is also referred to as “Eltanexor” 

1.53    “KPT-9274” means the compound known as KPT-9274, which is described on Schedule 1.53. 

1.54    “Law” means any law, statute, rule, regulation, court order, ordinance or other
pronouncement having the effect of law, of any Governmental Authority, including (a) good clinical practices and adverse event reporting requirements, guidance from the ICH or other generally accepted conventions, and all rules, regulations,
requirements and guidances of applicable Regulatory Authorities, (b) all export control and sanctions laws, and (c) the rules of any stock exchange or listing entity. 

1.55     “Licensed Compound” means Selinexor, Eltanexor,
KPT-9274, or Verdinexor, and Selinexor or Eltanexor may be replaced by a Back-Up Compound in accordance with Section 2.6.2. 

1.56    “Licensed Product” means any pharmaceutical product comprising or containing a Licensed
Compound as an active ingredient, in any dosage form or formulation. As used in this Agreement, except where not appropriate in context, “Licensed Product” also means the Licensed Compound contained in the relevant Licensed Product.
In calculation of the Royalty Term pursuant to Section 8.4.1, to the extent that a Licensed Compound is contained as a sole active ingredient, any formulation, including but not limited to a tablet, a capsule, a powder, a granule, a liquid, an
intravenous, a subcutaneous injection or a patch formulation, any such formulated Licensed Product shall be deemed as same Licensed Product. Further, it is understood by the Parties that a Combination Product containing a Licensed Compound as one of
the active ingredients shall be deemed as a Licensed Product, which is different from a Licensed Product containing a Licensed Compound as a sole active ingredient. 

1.57    “Losses” means any losses, liabilities, damages, costs, fees and expenses (including
reasonable attorneys’ fees and litigation expenses) arising out of or relating to suits or claims brought by Third Party (including product liability claims). 

1.58    “Manufacturing” or “Manufacture” means, as applicable, all activities
associated with the production, manufacture, processing, filling, finishing, quality assurance testing and release, stability studies, process validation, analytical development, packaging, labeling, shipping and storage of a pharmaceutical product,
(including production of drug substance and drug product, in bulk form, for preclinical studies, Clinical Studies or Commercialization); provided, however, that Manufacturing shall not include Development and Commercialization. When
used as a verb, “to Manufacture” and “Manufacturing” mean to engage in Manufacture, and “Manufactured” has a corresponding meaning. 

  

					
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 1.59    “Mechanism of Action” means, for Selinexor,
Verdinexor, or Eltanexor, the binding to the nuclear export protein, Exportin 1, or XPO1, causing inhibition of the activity of XPO1 or otherwise reducing the nuclear export of XPO1’s cargo proteins, and for
KPT-9274, it means causing dual inhibition of NAMPT and PAK4. 

1.60    “MFDS” means the Ministry of Food and Drug Safety in the Republic of Korea and any
successor Governmental Authority having substantially the same function. 
 1.61     “NDA” means
a New Drug Application, Biologics License Application, Marketing Authorization Application or similar application or submission filed with a Regulatory Authority in a country or group of countries to obtain marketing approval for a pharmaceutical
product in such country or such group of countries. 
 1.62    “Net Sales” means the gross
amount invoiced on sales of Licensed Products in the Field within the Antengene Territory by Antengene or any of its Related Parties to any Third Party, less the following sum incurred by Antengene or any of its Related Parties, with respect to the
sale of such Licensed Products, calculated in accordance with GAAP or IFRS as consistently applied: 

1.62.1     normal trade, cash, quantity and other customary discounts actually given to Third
Parties in the ordinary course of business; 
 1.62.2     rebates, credits and allowances given by
reason of rejections returns, damaged or defective product or recalls; 
 1.62.3    
government-mandated rebates and any other compulsory payments, credits, adjustments and rebates actually paid or deducted; 

1.62.4     price adjustments, allowances, credits, chargeback payments, discounts, rebates, fees and
reimbursements or similar payments granted or made to managed care organizations, group purchasing organizations or other buying groups, pharmacy benefit management companies, health maintenance organizations and any other providers of health
insurance coverage, health care organizations or other health care institutions (including hospitals), health care administrators, patient assistance or other similar programs, or to federal state/provincial, local and other governments, including
their agencies, or to wholesalers, distributors or other trade customers; 
 1.62.5     reasonable
and customary freight, shipping, insurance and other transportation expenses; 
 1.62.6     sales
and excise taxes (such as value added tax or its equivalent), other consumption taxes, customs duties and compulsory payments to governmental authorities and any other governmental charges imposed upon the sale of the Product duties, and other taxes
and government charges directly related to the sale, delivery or use of Licensed Product; 

  

					
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 1.62.7    a reasonable deduction to reflect amounts
previously included in Net Sales of Licensed Product that are written off as uncollectible after reasonable collection efforts, in accordance with standard practices of Antengene. 

Notwithstanding anything in this Agreement to the contrary, the transfer of a Licensed Product between or among Antengene and any of its Affiliates and
Sublicensees will not be considered a sale. 
 Disposition of a Licensed Product for, or use of a Licensed Product in, Clinical Studies or other scientific
testing, as free samples, or under compassionate use, patient assistance, or test marketing programs or other similar programs or studies shall not result in Net Sales. 

Net Sales will be determined from books and records maintained in accordance with GAAP or IFRS, consistently applied throughout Antengene. 

In the event a Licensed Product is sold in the form of a Combination Product, then the Net Sales for any such Combination Product shall be determined by
multiplying the Net Sales of the Combination Product during the applicable royalty reporting period, by the fraction, A/(A+B+...+N), where A is the weighted (by sales volume) average sale price of the Licensed Product component when sold
separately in finished form in the country in which the Combination Product is sold, and B+ ... +N are the weighted (by sales volume) average sale prices of the other active pharmaceutical ingredients included in the Combination Product when sold
separately in finished form in the country in which the Combination Product is sold, in each case during the applicable royalty reporting period or, if sales of both the Licensed Product component and the other active pharmaceutical ingredients did
not occur in such period, then in the most recent royalty reporting period during the preceding twelve (12) months in which sales of both occurred, if any. In the event that such average sale price cannot be determined for the Licensed Product
and/or all other active pharmaceutical ingredients included in the Combination Product, then the Parties will in good faith discuss and agree on a pro-rata allocation of the Net Sales that reflects the
Licensed Product’s contribution to the Combination Product on an equitable basis. 
 1.63     “Ono
Territory” means, with respect to Selinexor and Eltanexor, as may be amended, Japan, Republic of Korea, Taiwan, Hong Kong, Brunei, Cambodia, Indonesia, Laos, Malaysia, Mayanmar, Philippines, Singapore, Thailand, and Vietnam.  

1.64     “Patent Rights” means (a) all issued patents (including extensions, restorations by
existing or future extension or registration mechanisms, including patent term adjustments, patent term extensions, supplemental protection certificates or the equivalent thereof, substitutions, confirmations,
re-registrations, re-examinations, and patents of addition), (b) patent applications (including all provisional applications, substitutions, requests for continuation,
continuations, continuations-in-part, divisionals and renewals), (c) inventor’s certificates, and (d) all equivalents of the foregoing in any country of the
world. 
 1.65    “Person” means any natural person, corporation, unincorporated organization,
partnership, association, sole proprietorship joint stock company, joint venture, limited liability company, trust or government, or any agency or political subdivision of any government, or any other similar entity. 

  

					
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 1.66    “Phase I Study” means a study in humans which
provides for the introduction into humans of a pharmaceutical product, conducted in healthy volunteers or patients, to obtain initial information on product safety, tolerability, pharmacological activity or pharmacokinetics, as more fully defined in
21 C.F.R. § 312.21(a) (or the equivalent thereof outside the United States). 
 1.67    “Phase II
Study” means a study in humans of the safety, dose ranging or efficacy of a pharmaceutical product, as further defined in 21 C.F.R. § 312.21(b) (or the equivalent thereof outside the United States). 

1.68    “Phase III Study” means a study in humans of the efficacy and safety of a pharmaceutical
product, which is prospectively designed to demonstrate whether such product is effective and safe for use in a particular indication in a manner sufficient (alone or together with one or more other such studies) to file an application for
Regulatory Approval for the product. 
 1.69    “Phase IV Study” means a study in humans of the
efficacy and safety after Regulatory Approval which may evaluate safety signals not seen in earlier trials or how well the product works over a longer period of time and/or in a larger population. 

1.70     “Regulatory Approval” means any and all approvals, licenses, registrations or
authorizations of any Regulatory Authority that are necessary for the marketing and sale of a pharmaceutical product in a country or group of countries, including NDAs and orphan drug designations. 

1.71    “Regulatory Authority” means any applicable government regulatory authority involved in
granting approvals for the Development, Manufacturing or Commercialization of a pharmaceutical product, including, as applicable, CDE, SDA, and MFDS. 

1.72    “Regulatory Exclusivity” means any exclusive marketing rights or data exclusivity rights
conferred by any Regulatory Authority with respect to any Licensed Product that precludes the use of any Clinical Data collected and filed for such Licensed Product for the benefit of any Regulatory Approval for a generic or biosimilar product (for
any use), including any orphan or pediatric exclusivity where applicable. 
 1.73    “Related
Party” means (a) with respect to Karyopharm, Karyopharm’s Affiliates or any of its Third Party Licensees, and (b) with respect to Antengene, Antengene’s Affiliates and permitted Sublicensees. 

1.74    “SDA” means the State Drug Administration. 

1.75     “Selinexor” means the compound known as KPT-330,
which is described on Schedule 1.75. 
 1.76    “Sublicensee” means a Third Party to whom
Antengene grants a sublicense under any Karyopharm Technology to (a) Develop, use or Commercialize a Licensed Compound or Licensed Product in the Field in the Antengene Territory or (b) Manufacture or have Manufactured Licensed Compound or
Licensed Product in the Field for the Antengene Territory, pursuant to Section 7.2.1. 

  

					
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 1.77    “Territory” means (a) with respect to
Karyopharm, the Karyopharm Territory, and (b) with respect to Antengene, the Antengene Territory. 

1.78    “Third Party” means a Person other than a Party and its Affiliates. 

1.79    “Third Party Licensee” means Karyopharm’s licensees of the Karyopharm Technology.

 1.80    “United States” or “U.S.” means the United States of America and its
territories, possessions and commonwealths. 
 1.81    “Valid Claim” means any claim in any
(a) unexpired and issued patent that has not been disclaimed, revoked or held invalid by a final nonappealable decision of a court or other governmental agency of competent jurisdiction, or (b) to the extent that Karyopharm prosecutes in
timely manner pursuant to Section 12.4.2(a), patent application that has not lapsed, in the case of a provisional patent application, or been cancelled, withdrawn or abandoned without the possibility of revival, nor has been pending for more
than [**] from the earliest priority date claimed for such application; provided, however, that, if, thereafter, a patent containing such claim matures into registered patent, such claim shall thereafter be considered a Valid Claim in
accordance with subclause (a) above. For the purpose of Section 8.4, if the patent application that has been pending for more than [**] from the earliest priority date claimed for such application matures into registered patent after the
Royalty Term, such patent application or the registered patent thereof shall not be counted. 

1.82    “Verdinexor” means the compound known as KPT-335,
which is described on Schedule 1.82. 
 1.83    Additional Definitions. Each of the following
definitions is set forth in the Section of this Agreement indicated below: 
  

			
	 Definition:
	  	Section:
	1974 Convention	  	14.2
	Antengene	  	Preamble
	Antengene Development Plan	  	2.2
	Antengene Indemnitees	  	11.2
	Change in Control	  	14.1
	Clinical Quality Agreement	  	6.1.2
	Clinical Supply Agreement	  	6.1.2
	Commercial Supply Agreement	  	6.2.2
	Competitive Infringement	  	12.5.1
	Development Milestone Event	  	8.2.1
	Development Milestone Payment(s)	  	8.2.1
	Disclosing Party	  	1.21

  

					
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	 Definition:
	  	Section:
	Disputes	  	14.3.1
	Effective Date	  	Preamble
	Generic Version	  	8.4.2
	Global Clinical Development Plan	  	2.4.1
	Global Clinical Study Proposal	  	2.4.2(a)
	Global Common Activity	  	2.5.2
	Gross Up Payment	  	8.11
	Indemnitee	  	11.3
	Infringement Action	  	12.6
	Initiating Party	  	12.5.3
	IP Working Group	  	5.4
	Joint Patent Costs	  	12.4.3 (c)
	Joint IP Prosecuting Party	  	12.4.3 (a)
	Karyopharm	  	Preamble
	Karyopharm Development Plan	  	2.3
	Karyopharm Indemnitees	  	11.1
	Liaison	  	5.5
	Manufacturing Technology Transfer Plan	  	6.2.3
	Overview Plan	  	2.1
	Party/Parties	  	Preamble
	Pre-Existing Affiliates	  	14.1
	Prior CDA	  	1.21
	Receiving Party	  	1.21
	Royalty Report	  	8.5
	 Sales Milestone Event
 Royalty Term
	  	8.3.1
 8.4.1

	 SDEA
 Sales Milestone Payment(s)
	  	3.3
 8.3.1

	SPC	  	12.8
	 Sublicense
 Subject Party
	  	7.2.3
 12.6

	 Third Country Currency
 Term
	  	8.8.2
 13.1

	Working Group	  	5.4

  

	2.	DEVELOPMENT 

 2.1    Overview Plan.
Karyopharm has agreed to provide an overview of the key steps and timelines for Development of the Licensed Compounds and the Licensed Products in the Field as outlined in Schedule 2.1 attached hereto (the “Overview
Plan”). Any change to Overview Plan shall be filed to JOC for review and discussion. 

  

					
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 2.2    Development Plans for the Antengene Territory.
Within [**] after the Effective Date, Antengene shall prepare and submit to the JOC for review and discussion a written plan for the Development of the Licensed Product in the Antengene Territory (each, a “Antengene Development
Plan”) containing Selinexor setting forth the objectives of the Development to be conducted by Antengene, a plan for the conduct of Clinical Studies by or on behalf of Antengene or any of its Related Parties in the Antengene Territory
relating to the applicable Licensed Products containing Selinexor, the Development activities to be undertaken with respect to such Licensed Products containing Selinexor by or on behalf of Antengene in the Field in the Antengene Territory and a
time table for the conduct of such activities, which Antengene Development Plan shall be consistent with the Overview Plan and include a planning horizon of [**]. By the [**] of the Effective Date, Antengene shall prepare and submit to the JOC for
review and discussion an Antengene Development Plan for the Licensed Products containing Eltanexor, KPT-9274, and Verdinexor, respectively, setting forth the objectives of the Development to be conducted by
Antengene, the Development activities to be undertaken with respect to such Licensed Products containing Eltanexor by or on behalf of Antengene in the Field in the Antengene Territory and a time table for the conduct of such activities. Antengene
will present any proposed amendments to each Antengene Development Plan to the JOC for the JOC’s review and discussion reasonably in advance of Antengene’s intention to implement such plans or amendments, including any amendments required
under Section 2.6.2 below. For each Antengene Development Plan, Antengene shall also prepare and submit an updated Antengene Development Plan to the JOC for the JOC’s review and discussion [**]. 

2.3    Development Plans for the Karyopharm Territory. Subject to Section 7.1.3,
Karyopharm shall and/or shall use Commercially Reasonable Efforts to cause its Related Party to prepare written plans for each Licensed Compound (each a “Karyopharm Development Plan”) setting forth the objectives of the Development
to be conducted by Karyopharm and/or its Related Party with regard to such Licensed Compound and the Licensed Products containing such Licensed Compound in the Karyopharm Territory and written clinical development plans setting forth the Development
activities and time tables regarding any Clinical Studies that Karyopharm and/or its Related Party conducts as of the Effective Date in the Karyopharm Territory or Karyopharm and/or its Related Party believes should be conducted within the
Karyopharm Territory with regard to any Licensed Product. Within [**] after the Effective Date, Karyopharm shall prepare and submit to the JOC a Karyopharm Development Plan, which Karyopharm Development Plan shall be consistent with the Overview
Plan and include a planning horizon of [**]. Karyopharm will present any proposed amendments to each Karyopharm Development Plan to the JOC for the JOC’s review and discussion reasonably in advance of Karyopharm’s intention to implement
such plans or amendments. For each Karyopharm Development Plan. Karyopharm shall also prepare and submit an updated Karyopharm Development Plan to the JOC for the JOC’s review and discussion [**]. 

2.4    Global Clinical Development Plan. 

2.4.1    Global Clinical Development Plan. Subject to Section 7.1.3, Karyopharm
shall and/or shall use Commercially Reasonable Efforts to cause its Related Party to prepare written global clinical development plans setting forth the Development activities and time tables regarding any Global Clinical Study that Karyopharm
and/or its Related Party believes should be conducted with regard to any 

  

					
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Licensed Product (each a “Global Clinical Development Plan”). Within [**] after the Effective Date, Karyopharm shall prepare and submit to the JOC, an initial Global Clinical
Development Plan setting forth a plan for the conduct of Global Clinical Studies by or on behalf of Karyopharm and/or its Related Party relating to the applicable Licensed Products, the Development activities to be undertaken with respect to such
Licensed Products by or on behalf of Karyopharm or any of its Related Parties and a time table for the conduct of such activities, which initial Global Development Plan shall be consistent with the Overview Plan and include a planning horizon of
[**]. Karyopharm shall also prepare and submit an updated Global Clinical Development Plan to the JOC for the JOC’s review and comment [**]. 

2.4.2    Global Clinical Studies. 

(a)    From time to time during the Term, Karyopharm may submit to the JOC a proposal for a Global Clinical Study that
would support the filing of an NDA for the Licensed Product with Regulatory Authorities in both the Karyopharm Territory and the Antengene Territory (a “Global Clinical Study Proposal”). Each such Global Clinical Study Proposal
shall include a draft synopsis, proposed timelines for the conduct of such Global Clinical Studies. The JOC shall review and comment on each such Global Clinical Study Proposal. Karyopharm shall consider Antengene’s comments to such Global
Clinical Development Plan to the extent that those comments are reasonable based on scientific, business, and/or other relevant considerations. For clarity, Antengene has right to refuse to participate any Global Clinical Study at Antengene’s
full discretion. Antengene shall be responsible for bearing all costs and expenses incurred for patients enrolled in such Global Clinical Study in the Antengene Territory, provided that Antengene agrees to participate the Global Clinical Study. 

(b)    If Karyopharm proposes to expand a then-existing clinical-stage Development effort including any Clinical Study in
accordance with Karyopharm Development Plan so that it would become a Global Clinical Study, Karyopharm shall submit such proposal to the JOC. If Antengene desires to participate in such Global Clinical Study, it shall provide written notice thereof
to the JOC and Karyopharm within [**] after the date of the JOC’s receipt of the applicable Global Clinical Development Plan. Antengene shall be responsible for bearing all costs and expenses incurred for patients enrolled in such Global
Clinical Study in the Antengene Territory. 
 2.5    Responsibilities for Development Activities and Costs; No
Conduct in Other Party’s Territory. 
 2.5.1    Antengene Development
Activities. Antengene shall be responsible for the Development of the Licensed Products for each Licensed Compound in the respective Field in the applicable Antengene Territory, including the conduct of any Clinical Studies in the Antengene
Territory, in accordance with the terms of this Agreement. Antengene shall be responsible for one hundred percent (100%) of all costs and expenses relating to Development activities that are conducted by or on behalf of Antengene, including Global
Clinical Studies in the Antengene Territory. Antengene will conduct all Development of the Licensed Products in the respective Field for the applicable Antengene Territory solely in accordance with the

  

					
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terms of this Agreement and the applicable Antengene Development Plan or Global Clinical Development Plan, as applicable, as such Antengene Development Plan or Global Clinical Development Plan
may be amended or updated from time to time in accordance with this Agreement, and in accordance with all applicable Law. 

2.5.2    Karyopharm Development Activities. Karyopharm shall be responsible for, at
its own cost and expense, all of its activities relating to the Development of the Licensed Compounds and the Licensed Products in the Karyopharm Territory and Global Common Activity, including the costs and expenses relating to its participation in
Global Clinical Studies in the Karyopharm Territory or to conduct additional Development work in the Karyopharm Territory to Develop a Back-Up Compound. In addition, Karyopharm shall be responsible for all of
its own costs and expenses relating to the preparation of any Global Clinical Study Plan and all Global Common Costs. “Global Common Activity” means any Development activity with regard to a Global Clinical Study that is not
specific to Development activities in Antengene Territory or Karyopharm Territory: which includes, but not limited to, the project management, data management, pharmacovigilance support, statistical support and statistical analysis on global basis
(i.e. both of Karyopharm Territory and Antengene Territory). 
 2.5.3    No Conduct of
Clinical Trials in Other Party’s Territory. During the Term, neither Party may conduct Clinical Studies or other Development activities with respect to a Licensed Product in the other Party’s Territory without such other
Party’s prior written consent, which consent may be granted or withheld in the sole discretion of the other Party. 

2.6    Development in the Antengene Territory. 

2.6.1    Diligence. With respect to each Licensed Compound, Antengene will use
Commercially Reasonable Efforts to Develop and to obtain Regulatory Approval for the Licensed Products in the Field in each country in the Antengene Territory. 

2.6.2    Amendment to Antengene Development Plan Subsequent to Discontinuation of the
Development of a Licensed Product. In the event that Antengene determines not to continue the Development of a Licensed Product in the Field in the Antengene Territory, Antengene shall notify the JOC of its discontinuation of such
Development activities in a written statement, which describes in reasonable detail the reasons that Antengene determined to discontinue such Development activities. If Antengene determines not to continue the Development of any one of Selinexor and
Eltanexor in the Field in the Antengene Territory, Karyopharm shall provide the JOC with all Know-How on all then-existing candidates for Back-Up Compounds Controlled by
Karyopharm or its Affiliates as soon as practicable after its receipt through JOC of such notification by Antengene. The Parties, through JOC, shall provide feedback on and discuss the candidates for Back-Up
Compounds and Karyopharm will in good faith determine a Back-Up Compound among such candidates (or not to select a Back-Up Compound), which replaces a Licensed Compound.

  

					
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 2.7    Records; Reports; Information Sharing. 

2.7.1    Scientific Records. Each Party shall maintain complete, current and accurate
records of all Development work conducted by or on behalf of each Party and/or, to the extent practicable and permissible, its Related Party, and all Clinical Data, Data and other Know-How resulting from such
work. Such records shall fully and properly reflect all work done and results achieved in the performance of the Development activities in a good scientific manner appropriate for regulatory and patent purposes. Subject to Section 7.1.3, Each
Party shall, and shall use Commercially Reasonable Efforts to cause its Related Party to, document all Clinical Studies and other studies and research in formal written study reports in accordance with applicable guidelines (e.g., GCP, GLP,
and GMP) and all other applicable Law. Subject to 7.1.3, each Party shall, and shall use Commercially Reasonable Efforts to cause its Related Party to make all such Clinical Data, records and reports continuously available, within a reasonable
period following their creation, to the other Party for inspection and review (including, to the extent reasonably requested, copying) through appropriate electronic data room facilities. Subject to applicable Law (including, but not limited to, the
data privacy act in each country), each Party shall also have the right to review original versions of such records maintained by other Party and its Affiliates (and, to the extent permissible, its Related Parties) no more often than [**], at
reasonable times, upon written request to other Party. 
 2.7.2    Data Transfer.

 (a)    Within [**] after the Effective Date, Karyopharm shall transfer in electronic format to Antengene all
technical, and regulatory documents and Data Controlled by Karyopharm that are necessary or useful for Antengene to conduct the Development activities and to perform Antengene’s obligation or exercise Antengene’s rights hereunder, existing
as of the Effective Date, at Karyopharm’s expense. The Parties acknowledge that Karyopharm may be requested to arrange notarization or other certification of certain elements of the Data of Karyopharm and its Affiliates for official purposes as
required by applicable law or regulation, which Karyopharm shall perform at its expense to the extent such requests are reasonable in time, frequency, and scope. With Antengene’s guidance and to the extent required for Development as requested
by Regulatory Authorities for the Licensed Products in the Antengene Territory, Karyopharm shall provide Antengene with copies of documents covering (i) authenticity documents relevant to the Licensed Compounds and Licensed Products,
(ii) authorization to use Data provided by Karyopharm, (iii) documentation perfecting the patent license provisions of this Agreement, (iv) GLP documents; and (v) company information of Karyopharm or its Related Party;
provided, however, that the foregoing shall reflect Karyopharm’s work conducted prior to the Effective Date and none of the foregoing shall require Karyopharm to perform or conduct further research, laboratory, Manufacturing or
other work solely for the Antengene Territory, including any work to establish GLP or GMP compliance. 

  

					
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 (b)    If Antengene believes it would be desirable to have additional work
performed by Karyopharm to assist in the transition of Development activities from Karyopharm to Antengene or an on-site transfer, the Parties may jointly develop a written scope of work to be performed by
Karyopharm and Antengene, including timelines, terms, costs, and resource requirements, to be mutually agreed by both Parties. The JOC will review and provide comments on any such scope of work before such scope of work is executed by both Parties.

 2.7.3    Information Sharing. During the Term, subject to Section 7.1.3, and
to the extent permitted by applicable law, each Party shall provide the other Party with all Know-How Controlled by such Party and/or use Commercially Reasonable Efforts to provide the other Party with all Know-How Controlled by its Related Party, that is generated during the Term of this Agreement, that has not previously been provided hereunder and that is necessary or useful for the Development or Commercialization
of the Licensed Compounds or Licensed Products in the Field in the other Party’s Territory, in each case promptly upon request by the other Party. The Party providing such Party’s and/or its Related Party’s Know-How shall provide the same in electronic form to the extent the same exists in electronic form, and shall provide copies for all other materials comprising such Know-How
(including, for example, original patient report forms and other original source data). Any Data provided by one Party to the other Party under this Section 2.7.3 shall be provided in the original language in which such Data was generated,
provided that, with respect to Data relating to any Global Clinical Study, if such original language is not English, then the Party supplying such Data shall also provide English translations thereof. The Parties will cooperate and
reasonably agree upon formats and procedures to facilitate the orderly and efficient exchange of such Know How. Notwithstanding the foregoing, each Party understands that any information sharing set forth herein shall comply with the applicable laws
with respect to cross-border data flow in the respective Territory. 
 2.7.4    Rights of
Reference and Access to Data. Each Party shall have the right to cross-reference the regulatory filings and Regulatory Approvals (and, to the extent permissible by the Related Party, each Party’s Related Party’s regulatory filings
and Regulatory Approvals) related to the Licensed Products, and to access such regulatory filings and such Regulatory Approvals and any Data therein and use such Data in connection with the performance of its obligations and exercise of its rights
under this Agreement, including inclusion of such Data in its own regulatory filings for a Licensed Product free of charge. Each Party hereby will grant, and, subject to Section 7.1.3, will use Commercially Reasonable Efforts to cause its
Related Party to grant, to the other Party and its Related Party a “Right of Reference,” as that term is defined in 21 C.F.R. § 314.3(b) in the United States, or an equivalent right of access/reference in any other country or region,
to any Data, including such Party’s or its Related Party’s clinical dossiers, Controlled by such Party or such Related Party that relates to the Licensed Product for use by the other Party to Develop and Commercialize the Licensed Product
in the Field pursuant to this Agreement. To the extent permitted by applicable law, each Party shall provide a signed statement to this effect, if requested by the other Party, in accordance with 21 C.F.R. § 314.50(g)(3) or the equivalent as
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notification of such right of the other Party to the applicable Regulatory Authority and, subject to Section 7.1.3 shall use Commercially Reasonable Efforts to cause its Related Party to
provide such signed statement. Each Party will provide, and shall use Commercially Reasonable Efforts to cause its Related Party to provide, cooperation to the other Party to effect the foregoing. 

2.7.5    Investigator Sponsored Clinical Studies. Antengene shall have the
right to authorize the protocol for each Investigator Sponsored Clinical Study in the Antengene Territory and support such Investigator Sponsored Clinical Study at Antengene’s own discretion, provided, however, Antengene agrees to
inform Karyopharm of all such Investigator Sponsored Clinical Study(ies) in a timely manner and each proposal shall be subject to review and comment by a Working Group designated by the JOC. Karyopharm shall have the right to authorize the protocol
for each Investigator Sponsored Clinical Study in the Karyopharm Territory and support such Clinical Study at Karyopharm’s own discretion, provided, however, Karyopharm agrees to inform Antengene of all such Investigator Sponsored
Clinical Study(ies) in a timely manner and each proposal shall be subject to review and comment by a Working Group designated by the JOC. Neither Party shall authorize or support an Investigator Sponsored Clinical Study in the other Party’s
Territory without such other Party’s prior written consent, which consent may be granted or withheld in the sole discretion of the other Party. 
  

	3.	REGULATORY MATTERS 

 3.1    Regulatory Filings and
Interactions. 
 3.1.1    Responsibilities. Each Party will own the
INDs, the NDAs and related regulatory documents submitted to the applicable Regulatory Authorities for its Development activities with respect to each Licensed Product in the Field, and for Commercialization in its Territory with respect to each
Licensed Product in the Field. Each Party will (a) oversee, monitor and coordinate all regulatory actions, communications and filings with, and submissions to, each Regulatory Authority, (b) be responsible for interfacing, corresponding
and meeting with each Regulatory Authority and (c) be responsible for maintaining all regulatory filings, in each case of (a)-(c) with respect to its Development activities with respect to each Licensed Product in the Field, and with respect to
Commercialization of each Licensed Product in the Field in its Territory. 

3.1.2    Communications and Cooperation. Karyopharm shall cooperate in good
faith with Antengene pertaining to Antengene’s Development activities and regulatory affairs with respect to each Licensed Product in the Field in the Antengene Territory at Antengene’s sole cost and expense. Antengene will, as to each
Licensed Product in the Field in the Antengene Territory, (a) notify Karyopharm in writing of all material communications from a Regulatory Authority within [**] after receipt thereof, including a brief description in English of the principal
issues raised, (b) provide Karyopharm with a summary translation of such material communications in English as soon as reasonably possible, and (c) provide the 

  

					
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complete copies of the original correspondence in its original language to Karyopharm upon request. Antengene shall provide Karyopharm with reasonable advance notice of all substantive meetings
with the Regulatory Authorities in the Antengene Territory pertaining to each Licensed Product in the Field, or with as much advance notice as practicable under the circumstances, but not less than [**]. Karyopharm may, at its own cost, attend such
meetings with Regulatory Authorities as an observer upon reasonable advance notice to Antengene, subject to receipt of any required permissions of such Regulatory Authorities. Karyopharm will, as to each Licensed Product in the Field in the
Karyopharm Territory, (a) notify Antengene in writing of all communications from a Regulatory Authority that concern the safety or efficacy of a Licensed Compound within [**] after receipt thereof, including a brief description in English of
the principal issues raised, (b) provide Antengene with a summary translation of such material communications in English as soon as reasonably possible, and (c) provide the complete copies of the original correspondence in its original
language to Antengene upon request. Karyopharm shall provide Antengene with reasonable advance notice of all substantive meetings with the Regulatory Authorities in the Karyopharm Territory pertaining to each Licensed Product in the Field, or with
as much advance notice as practicable under the circumstances, but not less than [**]. For the purposes of this Section 3, “material communications” includes but is not limited to all communications related to or impacting the
Development of the Licensed Compounds or Licensed Products, study endpoints, study design, clinical trial subject numbers, clinical study timelines, and safety or efficacy of a Licensed Compound. 

3.1.3    Without limiting the obligations under Section 3.1.2, Antengene shall provide to
Karyopharm copies of the proposed labeling for the Licensed Product in the local language to be filed in the Antengene Territory. Additionally, to the extent permitted by applicable law, Antengene shall provide Karyopharm with (a) a copy of the
NDA in electronic format, provided that in cases where the NDA was not filed electronically, Antengene will provide the electronic files used to generate such submission, and copies of the final labeling for the Licensed Product in the
local language in all countries in the Antengene Territory in which Antengene obtains Regulatory Approvals. Additionally, subjection to Section 7.1.3, (a) Karyopharm shall and shall use Commercially Reasonable Efforts to cause its Related
Party, to provide Antengene with any reasonable requested relevant sections of the NDA filed by Karyopharm and/or its Related Party, in each case in electronic format, provided that in cases where the NDA was not filed electronically, Karyopharm
will and/or will use Commercially Reasonable Efforts to cause its Related Party to provide the relevant electronic files used to generate such submission, and (b) Karyopharm shall and/or shall use Commercially Reasonable Efforts to cause its
Related Party to provide Antengene with copies of the final labeling for the Licensed Product in the local language in all countries in the Karyopharm Territory in which Karyopharm and/or its Related Party obtain(s) Regulatory Approvals. 

3.1.4    Submissions. In addition, Antengene shall provide the JOC with written
notice of the fact of (a) the filing and submitting for Regulatory Approval (including orphan drug applications and designations) regarding each Licensed 

  

					
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Product in the Field in the Antengene Territory within [**]; (b) whether Regulatory Approval is obtained or denied regarding each Licensed Product in the Field in the Antengene Territory in a
timely manner; and (c) the submission of any IND for each Licensed Product in the Field in the Antengene Territory as soon as practicable after such event; provided, however, that in all circumstances, Antengene shall inform the
JOC of such event prior to public disclosure of such event by Antengene except to the extent such public disclosure is required by Law.  

3.2    Costs of Regulatory Affairs. Each Party shall be responsible for all costs incurred by or on
behalf of it in connection with applying for Regulatory Approval with respect to each Licensed Product in the Field in each country in its own Territory and related regulatory affairs activities. 

3.3    Pharmacovigilance. Prior to Antengene’s submission of an IND for its first
Clinical Study with respect to the Licensed Products, to the extent permitted by applicable law, the Parties will negotiate and finalize a Safety Data Exchange Agreement (the “SDEA”) to be agreed upon in writing, that will define
the pharmacovigilance responsibilities of the Parties and include safety data exchange procedures governing the coordination of collection, investigation, reporting, and exchange of information concerning any adverse experiences, and any product
quality and product complaints associated with adverse experiences, related to the Licensed Products, sufficient to enable each Party (and their respective Related Parties, if any) to comply with its legal and regulatory obligations. The SDEA shall
be modified in writing before obtaining the Regulatory Approval for such Licensed Products in either Territory, to enable each Party (and their respective Related Parties, if any) to comply with its legal and regulatory obligations. The Parties
shall use Commercially Reasonable Efforts to amend the SDEA to add as parties any Related Parties. 
  

	4.	COMMERCIALIZATION OF THE LICENSED PRODUCTS 

4.1    Responsibility, Cost and Diligence. 

4.1.1    Antengene’s Commercialization Activities. Subject to the terms of this
Agreement, Antengene shall be solely responsible for all Commercialization activities relating to the Licensed Products in the Field in the Antengene Territory. Antengene shall be responsible for one hundred percent (100%) of all costs relating to
Commercialization activities that are conducted by or on behalf of Antengene. With respect to each Licensed Compound, Antengene shall use Commercially Reasonable Efforts to Commercialize the Licensed Products in the Field in each country within the
Antengene Territory (including obtaining all required pricing and reimbursement approvals) as promptly as possible following receipt by Antengene or its Related Parties of Regulatory Approval for such Licensed Product in such country. Such
Commercialization efforts may include conducting Antengene post-registration studies in the Antengene Territory as may be necessary to expand the potential market for Licensed Products in the applicable Field, planning and implementation,
distribution, booking of sales, pricing and reimbursement, establishing and developing appropriate opinion leaders, promoting Licensed Products with the Mainland China National Health Insurance Bureau and managed care organizations and establishing
Licensed Products with formularies. 

  

					
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 4.1.2    Karyopharm’s Commercialization
Activities. Karyopharm shall be responsible for, at its own cost and expense, all of its activities relating to Commercialization of the Licensed Products in the Karyopharm Territory, including planning and implementation, distribution,
booking of sales, pricing and reimbursement.  
 4.2    Reporting Obligations. Antengene
shall provide Karyopharm with written notice of each First Commercial Sale of a Licensed Product in a country in the Antengene Territory within [**] after such event; provided, however, that in all circumstances, Antengene shall inform
Karyopharm of such event prior to public disclosure of such event by Antengene. Antengene shall also provide such other information, including its sales department structure, sales marketing structure and medical affairs structure to the JOC
as Antengene deems necessary or useful for Karyopharm and shall keep Karyopharm and the JOC reasonably informed of Antengene’s Commercialization activities with respect to Licensed Products.  

4.3    Commercialization by Karyopharm. Karyopharm shall provide information regarding its
Commercialization activities, including its sales department structure, sales marketing structure and medical affairs structure to the JOC as Karyopharm deems necessary or useful for Antengene and shall keep Antengene and the JOC reasonably informed
of Karyopharm’s Commercialization activities with respect to Licensed Products. 
 4.4    Sales and
Distribution. Each Party and its Related Parties shall be responsible for booking sales and shall warehouse and distribute Licensed Products in the Field in its Territory. Moreover, each Party and its Related Parties shall be solely
responsible for handling all returns of Licensed Product in the Field sold in its Territory, as well as all aspects of Licensed Product order processing, invoicing and collection, distribution, inventory and receivables of Licensed Products sold in
its Territory.  
 4.5    Recalls, Market Withdrawals or Corrective Actions. In the
event that any Regulatory Authority issues or requests a recall or market withdrawal or takes a similar action in connection with the Licensed Product in the Field in any part of a Party’s Territory, or in the event either Party determines that
an event, incident or circumstance has occurred that may result in the need for such a recall, market withdrawal or similar action in its own Territory, the Party notified of such a recall, market withdrawal or similar action, or the Party that
desires such a recall, market withdrawal or similar action, shall within [**] advise the other Party thereof by telephone, facsimile or e-mail, followed immediately by a notice in accordance with
Section 14.10. Each Party, in consultation with the other Party but in its own discretion, shall decide whether to conduct such a recall, market withdrawal or similar action in its own Territory and the manner in which any such a recall,
market withdrawal or similar action shall be conducted (except in the case of a government mandated recall, market withdrawal or similar action when such Party may act without such advance notice but shall notify the other Party as soon as
possible). Subject to the terms and conditions of the Supply Agreement, each Party shall bear the expense of any such a recall, market withdrawal or similar action in its own Territory. Each Party will make available all of its pertinent
records that may be reasonably requested by the other Party in order to effect such a recall, market withdrawal or similar action in the other Party’s Territory. 

  

					
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 4.6    Ex-Territory Sales;
Export Monitoring. 
 4.6.1    Ex-Territory
Sales. Subject to applicable Law, neither Party shall engage in any advertising or promotional activities relating to any Licensed Product in the Field directed primarily to customers or other buyers or users of such Licensed Product
in the Field located outside its Territory or accept orders for such Licensed Product in the Field from, or sell such Licensed Product in the Field into, such other Party’s Territory for its own account, and if a Party receives any order for
such Licensed Products in the Field in the other Party’s Territory, it shall refer such orders to the other Party. 

4.6.2    Export Monitoring. Each Party and its Related Parties will use
Commercially Reasonable Efforts at its own cost to monitor and prevent exports of each Licensed Product from its own Territory for Commercialization in the other Party’s Territory, or commercial use in the Antengene Territory outside the Field
of a Licensed Product sold by Antengene or its Related Parties, using methods commonly used in the industry for such purpose, and shall promptly inform the other Party of any such exports of any Licensed Product from its Territory of which it
becomes aware, and the actions taken to prevent such exports, to the extent permitted by applicable Law. Each Party shall, at the other Party’s cost, take reasonable actions requested in writing by the other Party that are consistent with
applicable Law to prevent exports of the Licensed Products from its Territory for Commercialization in the other Party’s Territory or the use of Licensed Product, to the extent permitted by applicable Law. 

4.7    Promotional Materials. 

4.7.1    Promotional Materials. Antengene shall develop and use promotional
materials (written, printed, video or graphic advertising, promotional, educational and communication materials) in a manner which is consistent with any established branding of a Licensed Product to ensure global standardization to the extent
permissible by applicable law. 
 4.7.2    Antengene Promotional Materials.
Antengene shall, and shall use Commercially Reasonable Efforts to cause its Related Parties to, provide Karyopharm with copies of promotional materials (written, printed, video or graphic advertising, promotional, educational and communication
materials) developed and used in the Antengene Territory by Antengene or its Related Parties in Commercializing the Licensed Product for Karyopharm’s review and approval (such approval not to be unreasonably withheld, delayed or conditioned)
and to support Karyopharm’s Commercialization activities for the Licensed Product in the Karyopharm Territory, including materials relating to marketing strategies for the Licensed Product in the Antengene Territory pursued by Antengene or its
Related Parties, where reasonably requested by Karyopharm. Karyopharm may use information contained in such promotional materials, free of charge, for preparation of 

  

					
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promotional materials relating to the Licensed Product for use by Karyopharm or its Related Parties in connection with Commercialization of the Licensed Product in the Karyopharm Territory and
for no other purpose, unless the Parties agree otherwise in writing. 
 4.7.3    Karyopharm
Promotional Materials. Karyopharm shall provide Antengene with copies of promotional materials (written, printed, video or graphic advertising, promotional, educational and communication materials) developed and used by Karyopharm
Commercializing the Licensed Product to support Antengene’s Commercialization activities for the Licensed Product in the Antengene Territory, including materials relating to marketing strategies for the Licensed Product in the Karyopharm
Territory pursued by Karyopharm where reasonably requested by Antengene. Antengene may use information contained in such promotional materials, free of charge, for preparation of promotional materials relating to the Licensed Product for use by
Antengene or its Related Parties in connection with Commercialization of the Licensed Product in the Antengene Territory and for no other purpose, unless the Parties agree otherwise in writing. 

 

	5.	GOVERNANCE. 

 5.1    Joint Operating Committee.
Within [**] after the Effective Date, Karyopharm and Antengene shall designate their representatives to the joint operating committee (the “Joint Operating Committee” or “JOC”) to oversee and monitor Development,
Manufacturing, use and Commercialization activities under this Agreement with respect to the Licensed Compounds and the Licensed Products in the Field. The Parties anticipate that the JOC will not be involved in day-to-day implementation of such activities under this Agreement. 

5.1.1    Composition of the Joint Operating Committee. The JOC shall be
comprised of an equal number of representatives of each Party, which number shall be three (3) representatives of each Party. The JOC representatives shall be senior-level employees of the appointing Party having appropriate experience,
expertise and decision-making authority. All JOC representatives shall have appropriate expertise and ongoing familiarity with the Licensed Products in the Field and this Agreement. Either Party may replace its respective JOC representatives at any
time with prior written notice to the other Party; provided that the criteria for composition of the JOC set forth in the preceding sentence shall continue to be satisfied following any such replacement of a Party’s representative
on JOC. An alternate member designated by a Party may serve temporarily in the absence of a member of the JOC for such Party. Each Party may invite its employees involved in Development, Manufacturing, use or Commercialization of the Licensed
Product for JOC meetings with the prior notice to the other Party. All representatives on the JOC, and all other attendees at a JOC meeting, shall be subject to confidentiality obligations, whether in a written agreement or by operation of law, no
less stringent than the requirements of Section 9.1. 

  

					
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 5.1.2    JOC Responsibilities.
The JOC shall have the following responsibilities: 
 (a)    review and approve each Antengene Development Plan,
and all amendments and updates to such Antengene Development Plan; 
 (b)    as part of its review and discussion of an
Antengene Development Plan, take into account the comments or views of Karyopharm or any of Karyopharm’s Related Parties outside of the Antengene Territory as Karyopharm may present to the JOC; 

(c)    review progress reports provided by Antengene with respect to its Development activities; 

(d)    monitor and provide Antengene with feedback regarding the conduct of Development activities by or on behalf of
Antengene; 
 (e)    coordinate Development activities conducted by Antengene and its Related Parties with the
activities conducted by Karyopharm and its Related Parties in their respective Territories, including regulatory and pharmacovigilance requirements and matters; 

(f)    review and discuss each Party’s and/or its Related Party’s long term Development strategy in the
respective Territory in a timely manner; 
 (g)    oversee the manufacturing and supply relationship between the
Parties with respect to Manufacture of Licensed Compounds and Licensed Products in case Licensed Compounds and Licensed Products are supplied by the Karyopharm to Antengene for the Antengene Territory and oversee the Manufacture of Licensed
Compounds and Licensed Products by Antengene and/or its Related Parties; 
 (h)    review and provide comments with
respect to the commercialization plan and marketing strategy of Antengene in the Antengene Territory and any material updates or amendments thereto; 

(i)    review and discuss the candidates for Back-Up Compound among its
candidates provided by Karyopharm in accordance with Section 2.6.2; 
 (j)    providing a forum for the Parties to
discuss Commercialization of Licensed Products in the Field worldwide, including coordination regarding Licensed Product positioning and messaging, key opinion leader relationship management, medical affairs, and marketing and selling materials; and

 (k)    performing such other activities as the Parties shall determine to be the responsibility of the JOC. 

5.2    Meetings.  

5.2.1    The JOC shall meet no less frequently than [**] until the [**] and [**] during the Term. In
addition to the regular meetings, either Party may request an ad-hoc meeting of the JOC to discuss any specific issues from time to time. In the event that an urgent issue or matter that requires prompt action
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such issue or matter. Such meeting (or other means of communication) shall take place by teleconference or videoconference (unless otherwise mutually agreed by the Parties) as promptly as
possible. 
 5.2.2    The location for the in-person
meetings of the JOC shall, respectively, alternate between Karyopharm’s headquarters and Antengene’s headquarters (or such other locations as are mutually agreed by the Parties). Alternatively, the JOC may meet by means of
teleconference, videoconference or other similar communications equipment. 
 5.2.3    All
proceedings for the JOC shall take place in English. Each Party shall bear its own expenses relating to participation at such meetings by its representatives. 

5.3    Decision-Making.  

5.3.1    Subject to 5.3.2, any decisions of the JOC shall be made by unanimous vote. With respect to
decisions of the JOC, each Party shall have one (1) vote, exercised through its representatives on the JOC on behalf of such Party. For each meeting of the JOC, a quorum exists so long as there is at least one (1) representative of
each Party present at the meeting. Action on any matter may be taken at a meeting, by teleconference, videoconference or by written consent. The JOC shall attempt to resolve any and all disputes before it for decision by consensus.

 5.3.2    If the JOC is unable to reach unanimous agreement after working in good faith to reach
a consensus and taking into account all reasonable medical, scientific, and clinical considerations and considering each Party’s comments or requests on such matters that would adversely impact the safety, commercial value or reputation of the
Licensed Products, with respect to a dispute relating to a JOC responsibility described in Section 5.1.2 for a period in excess of [**], then the dispute shall be reviewed by a Working Group (as defined below) designated by the JOC, which shall
within [**] submit to the JOC a written analysis of the dispute and recommendations for resolving the dispute. If the Working Group fails to timely submit such analysis and recommendations or if the JOC is unable to reach unanimous agreement with
respect to such dispute for a period in excess of [**] following the receipt of such analysis and recommendation, then, such dispute shall be subject to this Section 5.3.2: 

(a)    Subject to Section 5.3.3, Antengene shall have the deciding vote with respect to any aspects of such matter
relating to the Antengene Territory, including the Antengene Development Plan; provided that, any and all deciding votes shall be in good faith, and after good faith consideration of Karyopharm’s comments or requests on such
matters that would adversely impact the safety, commercial value or reputation of the Licensed Products, and with due regard for the impact of such deciding vote on Development and Commercialization of the Licensed Products in the Karyopharm
Territory and consistency in all material respects with the terms of this Agreement and such decisions do not adversely impact the global product opportunity for the Licensed Product;. 

  

					
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 (b)    Karyopharm shall have the decision making authority with respect to
any aspects of such matter relating to the Karyopharm Territory, as well as any amendment to a Global Clinical Development Plan. 

5.3.3    Neither Party shall have the deciding vote on, and the JOC shall not have decision-making
authority regarding, any of the following matters, which shall be mutually agreed to by the Parties: 
 (a)    any
matter that would materially adversely impact the safety, commercial value or reputation of a Licensed Product in the Antengene Territory; 

(b)    the imposition of any requirements on the other Party to undertake obligations beyond those for which it is
responsible, or to forgo any of its rights, under this Agreement; 
 (c)    the imposition of any requirements that the
other Party take or decline to take any action that would result in a violation of any Law or any agreement with any Third Party or the infringement of intellectual property rights of any Third Party; 

(d)    any matters that would excuse such Party from any of its obligations under this Agreement; or 

(e)    modifying the terms of this Agreement or taking any action to expand or narrow the responsibilities of the JOC.

 5.3.4    Notwithstanding anything to the contrary set forth herein, 

(a)    the decision-making Party shall make its decision in good faith, subject to the terms and conditions of this
Agreement; 
 (b)    in no event may the decision-making Party unilaterally determine that it has fulfilled any
obligations hereunder or that the non-deciding Party has breached any obligations hereunder; and 

(c)    Antengene may not make a decision that would cause Karyopharm to be in breach of a provision of a Karyopharm Third
Party Agreement. 
 5.4    Working Groups. Upon mutual agreement, the Parties may establish other
committees or working groups (each, a “Working Group”) as they deem appropriate. These Working Groups shall report to the JOC depending on the subject matter of such Working Group’s oversight. A Working Group may be established
on an ad hoc basis for purposes of a specific project. In no event shall the authority of a Working Group exceed that of the JOC. The Parties agree to the establishment of a joint intellectual property working group (the “IP Working
Group”) after the Effective Date. The IP Working Group shall (a) review and discuss intellectual property matters relating to a Licensed Compound or Licensed Product in the Field, and (b) in the case of Joint IP, determining which
Party shall be the Joint IP Prosecuting Party for such Joint IP. 

  

					
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 5.5    Liaisons. Within [**] following the Effective
Date, each Party shall appoint a representative (“Liaison”) to facilitate communications between the Parties (including, coordinating the exchange of Data and Know-How of each Party as required under this Agreement) and to act as a
liaison between the Parties with respect to such other matters as the Parties may mutually agree in order to maximize the efficiency of the collaboration. Each Party may replace its Liaison with an alternative representative at any time with prior
written notice to the other Party. Each Party’s Liaisons shall be entitled to attend all JOC meetings. Each Liaison may bring any matter to the attention of the JOC where such Liaison reasonably believes that such matter requires attention of
the JOC. Each Liaison shall be responsible with creating and maintaining a collaborative work environment within the JOC. The Liason shall assist with (a) scheduling meetings in accordance with Section 5.2.1, but more frequently if a Party
request in accordance with Section 5.2.1 or the JOC determines it necessary; (b) setting agendas for meetings with solicited input from other members; (c) coordinating the delivery of draft minutes to the JOC for review and final
approval; and (d) conducting meetings, including ensuring that objectives for each meeting are set and achieved. 

5.6    Authority. The JOC will have only the powers assigned expressly to it in this Article 5, and
will not have any power to amend or modify the terms of this Agreement or waive compliance with this Agreement. In furtherance thereof, each Party will retain the rights, powers and discretion granted to it under this Agreement and no such rights,
powers or discretion will be delegated to or vested in the JOC unless such delegation or vesting of rights is expressly provided for in this Agreement or the Parties expressly so agree in writing. 

 

	6.	MANUFACTURE AND SUPPLY 

 6.1    Clinical Supply.

 6.1.1    Clinical Supply. Karyopharm shall use Commercially Reasonable Efforts to
Manufacture and supply all quantities of the Licensed Compounds and/or Licensed Products for use by Antengene in the Development of Licensed Products in the Antengene Territory, including to obtain Regulatory Approval in the Antengene Territory.
Antengene’s purchase price for the Licensed Compounds and Licensed Products shall be [**]. 

6.1.2    Clinical Supply Agreement. The Manufacturing and supply by Karyopharm of the
Licensed Compounds and Licensed Products for Development purposes shall be governed by a mutually acceptable clinical supply agreement (the “Clinical Supply Agreement”) and a mutually acceptable clinical quality agreement (the
“Clinical Quality Agreement”) which shall include the terms and conditions as are reasonable and customary for an agreement governing the Manufacturing and supply of compounds and products similar to the Licensed Compounds and the
Licensed Products for clinical supply purposes. The Clinical Supply Agreement and Clinical Quality Agreement shall be finalized within [**] period after the Effective Date. In no event shall Karyopharm be obligated to supply quantities of Licensed
Compounds and/or Licensed Products in excess of amounts reasonably necessary to satisfy Antengene’s and its Related Party’s Development requirements in the Field in the Antengene Territory. 

  

					
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 6.2    Commercial Supply. 

6.2.1    Commercial Supply. With respect to supply of each of the Licensed Products
for Commercialization, in the case Antengene does not elect to Manufacture the Licensed Compounds and/or Licensed Products by itself, Antengene may purchase all of its requirements for the Licensed Compounds and/or Licensed Products for the
Antengene Territory from Karyopharm. In the case Antengene elects to Manufacture the Licensed Compounds and/or Licensed Products by itself, Antengene may Manufacture the Licensed Compounds and/or Licensed Products for Development and
Commercialization purposes. Antengene’s purchase price for the Licensed Compounds and Licensed Products shall be [**]. 

6.2.2    Commercial Supply Agreement. If Antengene desires to have Karyopharm to
supply and Manufacture the Licensed Compounds and/or Licensed Products for the Antengene Territory for Commercialization purposes, such Manufacture and supply by Karyopharm shall be covered by a mutually acceptable commercial supply agreement (the
“Commercial Supply Agreement”) which shall include the terms and conditions as are reasonable and customary for an agreement governing the Manufacturing and supply of compounds and/or products similar to the Licensed Compounds
and/or the Licensed Products for Commercialization purposes. 
 6.2.3    6.2.3
Antengene’s Right to Manufacture. If Antengene elects to Manufacture Selinexor by itself in the Field for the Antengene Territory for Development and Commercialization purposes then Antengene may elect to do no earlier than [**] after
the Effective Date and provided that Karyopharm has provided notice to Antengene that the relevant processes and/or methods for such Manufacture (both API and drug product) have been finalized and validated. Once Karyopharm has finalized and
validated the applicable manufacturing processes (both API and drug product) for each of Verdinexor, Eltanexor and, KPT-9274, Karyopharm shall promptly notify Antengene and, at any time thereafter, Antengene
may elect to Manufacture such Licensed Compound and/or Licensed Product for Development and Commercialization purposes in the Field in the Antengene Territory. Upon Antengene’s decision to take over the Manufacture of a Licensed Compound and/or
Licensed Product, then within [**] after receipt of such request, Karyopharm shall, in accordance with this Section 6.2.3 and to the extent permitted by Law, transfer to Antengene, an Affiliate of Antengene, or a Third Party manufacturer
approved by Karyopharm (such approval not to be unreasonably withheld, delayed or conditioned), the Karyopharm Know-How reasonably necessary or useful to enable Manufacture of the applicable Licensed Compounds
and/or Licensed Products for Development and Commercialization for the Antengene Territory in the Field and not previously transferred to Antengene, such Affiliate of Antengene or any such Third Party manufacturer (“Karyopharm Manufacturing Know-How”). Such Know-How transfer by Karyopharm shall be conducted using Commercially Reasonable Efforts and shall include copies or samples of relevant documentation,
materials, analytical assays for the Licensed Compounds and/or the Licensed Products and other embodiments of such Karyopharm Know-How. Upon such Know-How transfer,
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with Antengene, such Affiliate of Antengene or such Third Party manufacturer with respect to such Karyopharm Know-How. The details of how such Know-How transfer, including a specific list of Karyopharm Know-How to be transferred by Karyopharm, shall be set forth in a written technology transfer plan (the
“Manufacturing Technology Transfer Plan”) executed by the Parties for the purpose of ensuring the complete and timely transfer of such Karyopharm Know-How and the protection of
Karyopharm’s rights in such Karyopharm Know-How. The Manufacturing Technology Transfer Plan shall take into consideration, among other things, the Development and Commercialization activities in the
Antengene Territory, and the other responsibilities for key employees of Karyopharm. Antengene shall pay the amounts set forth in the Manufacturing Technology Transfer Plan for the work and transfer performed by Karyopharm and shall reimburse
Karyopharm for its out-of-pocket costs incurred in the course of such transfer pursuant to this Section 6.2.3. Karyopharm shall have no obligation to transfer any
Karyopharm Manufacturing Know-How to Antengene until the full execution of the Manufacturing Technology Transfer Plan by both Parties. For clarity, during the transfer of such Karyopharm Know-How, Karyopharm shall continue to Manufacture and supply the Licensed Compounds and the Licensed Product to Antengene in accordance with Clinical Supply Agreement or Commercial Supply Agreement. Antengene shall
not request to initiate a Manufacturing Technology Transfer Plan for more than one Licensed Compound and/or Licensed Product at a time unless otherwise agreed to by Karyopharm. 

6.3    Related Substance Supply. Subject to the terms of the applicable Supply Agreement, Antengene
shall have the right to purchase from Karyopharm, and Karyopharm shall supply to Antengene, related substance of the Licensed Compounds (e.g., reference standard, internal standard and impurities) necessary for Antengene to conduct non-clinical studies, preclinical studies or Clinical Studies, including, but not limited to analytical test method development and/or validation, for regulatory submissions or Commercialization in the Antengene
Territory, at [**]. 
  

	7.	LICENSES 

 7.1    License Grants. 

7.1.1    License Grants to Antengene. Subject to the terms and
conditions of this Agreement, Karyopharm hereby grants Antengene (a) an exclusive (even as to Karyopharm and its Affiliates), royalty-bearing, transferable, sublicenseable (including through multiple tiers) (in accordance with Section 7.2)
license under the Karyopharm Technology to Develop, use and Commercialize the Licensed Compounds and the Licensed Products in the Field in the Antengene Territory; and (b) subject to election by Antengene and the full execution by the Parties
of the Manufacturing Technology Transfer Plan, a non-exclusive, royalty-free, non-transferable (except as provided in Section 14.1), sublicenseable (including
through multiple tiers) (in accordance with Section 7.2) license under the Karyopharm Technology to Manufacture or have Manufactured Licensed Compounds and Licensed Products in or outside of the Antengene Territory solely for Development and
Commercialization in the Field in the Antengene Territory. 

  

					
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 7.1.2    License Grants to Karyopharm.
Antengene hereby grants Karyopharm a non-transferable (except as provided in Section 14.1), sublicenseable (including through multiple tiers) (subject to Section 7.2), non-exclusive, royalty-free
license under Antengene Technology to Develop, Manufacture, have Manufactured, use and Commercialize Licensed Compounds and Licensed Products in the Field in the Karyopharm Territory. 

7.1.3    License Grants to Karyopharm’s Related Party. Karyopharm shall not grant
to its Affiliate or any Third Party a license under Karyopharm Technology, which license would materially conflict with Section 7.1.1 (License Grant to Antengene). Parties agree that the breach of this provision by Karyopharm shall constitute a
“material breach” of this Agreement by Karyopharm. 
 Karyopharm hereby acknowledges that Antengene’s rights and status as
the exclusive licensee under Karyopharm Technology for the Licensed Products in the Field in the Antengene Territory set forth in each of Sections 2.7.1 (Scientific Records), 2.7.3 (Information Sharing), 2.7.4 (Rights of Reference and Access to
Data), 3.1.3 and 4.7.3 (Karyopharm Promotional Materials) (collectively, the “Collaboration Provisions”) constitutes essential benefit to enter into this Agreement, provided, however, that, such acknowledgement shall not be made without
prejudice to any other benefit conferred to Antengene under this Agreement. 
 Karyopharm shall be responsible for the compliance of its
Third Party Licensees with the requirements of Karyopharm’s Related Parties in Collaboration Provisions. Karyopharm shall notify Antengene in writing whether a Third Party Licensee has agreed to the terms of the Collaboration Provisions
promptly after execution of the applicable agreement. If a Third Party Licensee does not agree to any or all of the Collaboration Provisions then Karyopharm shall not grant to such Third Party Licensee the applicable reciprocal rights which may
include access to Antengene’s Data or Antengene Technology or which may include (a) the grant of any sublicense under Antengene Patent Rights and Antengene Know-How to such Third Party Licensee or
(b) the grant to such Third Party Licensee of access to Data generated by Antengene and Antengene Technology or (c) a right of reference with respect to Antengene’s regulatory filings and Antengene’s Regulatory Approvals and
Antengene’s promotional materials. For example, if a Third Party Licensee does not agree to grant to Antengene the right to cross reference its regulatory filings and Regulatory Approvals related to the Licensed Products, then Karyopharm will
not grant to the Third Party Licensee the right to cross reference Antengene’s regulatory filings and Regulatory Approvals related to the Licensed Products. 

If a Third Party Licensee agrees to any or all of the Collaboration Provisions, the applicable reciprocal rights concerning the Licensed
Products to be made available by such Third Party Licensee to Antengene through Karyopharm shall be incorporated into Karyopharm Technology and shall be granted to Antengene under the terms and conditions of this Agreement. Notwithstanding anything
herein to the contrary, to the extent that (a) the Party is required by the Regulatory Authority to make available certain Know-How Controlled by Related Party of the other Party (e.g. included, but not
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brochure for Clinical Study conducted by such Related Party) in order to obtain and maintain IND, NDA or Regulatory Approval of Licensed Product or (b) the Party wishes to utilize the Data
Controlled by Related Party of the other Party, which is generated from Global Clinical Study, the other Party shall procure and make available to the requesting Party such Know-How and Data, respectively,
free of charge. 
 7.2    Sublicensing Terms. 

7.2.1    Antengene’s Right to Sublicense.
Antengene may sublicense the rights granted under Section 7.1 to its Related Party with the prior written approval by Karyopharm (such approval not to be unreasonably withheld, delayed or conditioned), provided that Antengene is
not required to obtain such written approval by Karyopharm in the cases that: 
 (a)    Antengene sublicenses its
rights under the Karyopharm Technology to any of its Affiliates; 
 (b)    Antengene uses competent and GCP compliant
CROs, clinical trial sites or any other Third Party to perform portions of the Development of a Licensed Product to the extent consistent with its normal business practices and Antengene Development Plan; 

(c)    Antengene engages reputable and qualified Third Parties to assist with Commercialization of the Licensed Products
through co-promotion, and distributor arrangements and may sublicense its rights granted under Section 7.1 to such Third Parties to the extent that such arrangements are commercially reasonable and co-promotion and distribution by such Third
Parties is made under direction by Antengene or strategy given by Antengene. 
 Antengene shall promptly provide to Karyopharm written notice of any such
grant by Antengene in accordance with this Section 7.2.1 except for above (a) through (c) setting forth in reasonable detail the nature of such grant and the identity of the Sublicensee. Any sublicense agreement shall contain
confidentiality, reporting, audit and access to data and information obligations comparable to those set forth herein and require the express compliance of such Sublicensee to the requirements set forth in Section 7.1.1(b). For clarity,
Antengene may use a Third Party manufacture to Manufacture Licensed Compound and/or Licensed Product in the Field for the Development and Commercialization for the Antengene Territory subject to Section 6.2.3 to the extent that
(i) Karyopharm approves such Third Party manufacturer, (ii) Licensed Compound and/or Licensed Product is Manufactured under direction by Antengene and in the manufacturing method approved by Antengene and (iii) the specification
therefor is approved by Antengene. 
 7.2.2    Karyopharm Right to Sublicense.
Karyopharm may sublicense the rights granted under Section 7.1 to its Related Party with the prior written notice to Antengene, provided that Karyopharm is not required to make such notice to Antengene in the cases that: 

(a)    Karyopharm sublicenses its rights under the Antengene Technology to any of its Affiliates; 

  

					
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 (b)    Karyopharm uses competent and GCP compliant CROs, clinical trial
sites or any other Third Party to perform portions of the Development of a Licensed Product to the extent consistent with its normal business practices; 

(c)    Karyopharm uses Third Party manufacturer to Manufacture Licensed Compound and/or Licensed Product; or 

(d)    Karyopharm engages reasonably qualified Third Parties to assist with Commercialization of the Licensed Products
through co-promotion, co-marketing and distributor arrangements and may sublicense its rights granted under Section 7.1 to such Third Parties to the extent such arrangements are commercially reasonable.

 Karyopharm shall promptly provide to Antengene written notice of any such grant by Karyopharm in accordance with this Section 7.2.2 except for above
(a) through (d) setting forth in reasonable detail the nature of such grant and the identity of the sublicensee. Any sublicense agreement shall contain confidentiality, reporting, audit and access to data and information obligations comparable
to those set forth herein. 
 7.2.3    Sublicense Requirements. Each sublicense
granted by a Party pursuant to Section 7.2 (a “Sublicense”) to a Third Party shall be in writing and shall be consistent with the relevant restrictions and limitations set forth in this Agreement. No Sublicense shall diminish,
reduce or eliminate any obligation of either Party under this Agreement. Each Party shall remain responsible for its obligations under this Agreement and shall be responsible for the performance of any of its Sublicensees or sublicensees in
accordance with applicable terms and conditions of this Agreement. 
 7.3    No Other Rights.
Except as otherwise expressly provided in this Agreement or in accordance with applicable law, under no circumstances shall a Party, as a result of this Agreement, obtain any ownership interest, license right or other right in any Know-How, Patent Rights or other intellectual property rights of the other Party, including items owned, controlled or developed by the other Party, or provided by the other Party to the receiving Party at any time
pursuant to this Agreement. For clarity, except for Antengene’s license and rights under Section 7.1.1 relating to Manufacturing of the Licensed Compound and the Licensed Product and other related provisions, (a) in no event will the
licenses or rights granted to Antengene under this Agreement with respect to the Licensed Compounds and the Licensed Products extend outside the respective Field and the applicable Antengene Territory; (b) Antengene’s rights with respect
to the Licensed Compounds and Licensed Products, and Antengene’s rights with respect to any regulatory documents and any interactions with Regulatory Authorities with respect to the Licensed Compounds and Licensed Products, shall be limited to
the extent necessarily required under this Agreement and shall not extend outside the Field and the Antengene Territory; and (c) Antengene shall not, directly or indirectly, use, exploit or exercise any rights under any Karyopharm Technology,
or otherwise conduct any Development, use, or Commercialization activities with respect to any Licensed Compound or Licensed Product, outside the respective 

  

					
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Field or outside the applicable Antengene Territory except as may otherwise be agreed by the Parties. In addition, for clarity, (a) in no event will the licenses or rights granted to
Karyopharm under this Agreement with respect to the Licensed Compounds and the Licensed Products extend outside the Field and the Karyopharm Territory; (b) Karyopharm’s rights under the Antengene Technology with respect to the Licensed
Compounds and Licensed Products, and Karyopharm’s rights with respect to any regulatory documents and any interactions with Regulatory Authorities with respect to the Licensed Compounds and Licensed Products, shall not extend outside the
Karyopharm Territory; and (c) Karyopharm shall not, directly or indirectly use, exploit or exercise any rights under any Antengene Technology except as provided in this Agreement or as otherwise may be agreed by the Parties. 

7.4    Prior to making a licensing proposal relating to any pharmaceutical product that inhibits any of XPO1, MAMPT
and PAK4 (“New Product”) to any Third Party in the Mainland China and Macau, Karyopharm shall provide Antengene a report to evaluate the New Product (collectively, “New Product Proposal”). Antengene shall provide Karyopharm a
written notice indicating whether Antengene would like to develop such New Product within [**] after receiving the New Product Proposal (the “Evaluation Period”). Karyopharm shall not engage in developing or commercializing the New Product
within the Territory (including but not limited to negotiation with any Third Party regarding the New Product) unless Antengene fails to accept the New Product Proposal within the Evaluation Period. 

 

	8.	CERTAIN FINANCIAL TERMS 

 8.1    Upfront Fee. In
consideration for the rights, licenses and options granted by Karyopharm to Antengene under this Agreement, Antengene shall pay Karyopharm a non-refundable,
non-creditable upfront payment of Twelve Million (12 Million) US Dollars as soon as is practicable but in no event later than [**] after the Effective Date and receipt of invoice by Antengene. 

8.2    Development Milestone Payments. 

8.2.1    Antengene or its Affiliate shall make the
non-creditable milestone payments to Karyopharm set forth below in this Section 8.2.1 (the “Development Milestone Payment(s)”), each payable once, within [**] after the milestone is met
and receipt of invoice by Antengene for corresponding Development Milestone Payment. 

  

					
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	 Development Milestone Event
	  	Development Milestone Payment (in USD)
	Development / Regulatory Milestones - Selinexor	  	[**]	  	[**]
	  	  
 [**]
	  	  
 [**]

			
		  	[**]	  	[**]
			
		  	[**]	  	[**]
			
		  	[**]	  	[**]
			
		  	[**]	  	[**]
			
		  	[**]	  	[**]
			
	Development / Regulatory Milestones – Eltanexor	  	[**]	  	[**]
	  	  
 [**]
	  	  
 [**]

			
		  	[**]	  	[**]
			
	Development / Regulatory Milestones – KPT-9274	  	[**]	  	[**]
	  	  
 [**]
	  	  
 [**]

			
		  	[**]	  	[**]
			
	Development / Regulatory Milestones – Verdinexor	  	[**]	  	[**]
	  	  
 [**]
	  	  
 [**]

			
		  	[**]	  	[**]

 8.2.2    Each Development Milestone Payment by Antengene to
Karyopharm hereunder shall be payable only once, regardless of the number of times achieved with respect to a Licensed Product. 

8.2.3    Antengene shall provide Karyopharm with written notice of the achievement by Antengene or
any of its Related Parties of any Development Milestone Event with respect to a Licensed Product set forth in Section 8.2.1 within [**] after the occurrence of such Development Milestone Event; provided, however, that Antengene
shall inform Karyopharm of such Development Milestone Event prior to any public disclosure of such Development Milestone Event by Antengene. 

  

					
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 8.3    Sales Milestone Payments. 

8.3.1    Antengene shall provide Karyopharm with written notice of the achievement by Antengene or
any of its Related Parties of any milestone event with respect to a Licensed Product set forth in this Section 8.3.1 (the “Sales Milestone Event”) within [**] after the occurrence of each Sales Milestone Event. Antengene or its
Affiliate shall make the non-refundable, non-creditable payments to Karyopharm set forth below in this Section 8.3.1 (the “Sales Milestone
Payment(s)”) within [**] after the milestone is met and receipt of invoice by Antengene: 
  

					
	 Sales Milestone Event
	  	 Sales Milestone

Payment (in USD)

	Sales Milestones (All 4 products combined)	  	(i) Upon the first achievement of annual net sales of the Products in Antengene fiscal year exceeding USD [**] in the Antengene Territory	  	[**]
			
		  	(ii) Upon the first achievement of annual net sales of the Products in Antengene fiscal year exceeding USD [**] in the Antengene Territory	  	[**]
			
		  	(iii) Upon the first achievement of annual net sales of the Products in Antengene fiscal year exceeding USD [**] in the Antengene Territory	  	[**]

 8.3.2    Section 8.2.2 shall apply for the Sales Milestone
Payment. If a Sales Milestone Event described in a clause in Section 8.3.1 occurs before or concurrently with another Sales Milestone Event described in a preceding clause in Section 8.3.1, Antengene shall also pay the Sales Milestone
Payment described in such earlier clause when the Sales Milestone Payment described in such later clause is paid, provided that, in the case that more than [**] Sales Milestone Event is met in one Calendar Year, then [**] aggregated Sales Milestone
Payment(s) may be made [**] after the subsequent Sales Milestone Payment(s) is met. By way of example, if, during an Antengene Fiscal Year, Annual Net Sales of Licensed Products first exceed the thresholds set forth in Sections 8.3.1(i) (ii)
and (iii), Antengene shall pay Karyopharm the aggregated Sales Milestone Payments set forth in Sections 8.3.1(i) (ii) and (iii). 

8.4    Royalties. 

8.4.1    Royalties Payable on Licensed Products. Subject to Sections 8.4.2 and
8.4.3, during the Royalty Term, Antengene or its Affiliate shall pay to Karyopharm a royalty Net Sales of a Licensed Product by Antengene and its Related Parties of all Licensed Products in the Antengene Territory in accordance with the table below
in this Section 8.4.1 quarterly. For purpose of this Agreement, the “Royalty Term” means the period which commences upon the date of First 

  

					
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Commercial Sale and continues, on a country-by-country basis, until the later of (a) the date of expiration of
the Regulatory Exclusivity period applicable to the Licensed Product in such country in the Antengene Territory; (b) the date of expiration of all Karyopharm Patent Rights, whose Valid Claim Covers such Licensed Product in such country, or
(c) the tenth (10th) anniversary of the First Commercial Sale of such Licensed Product in such country (for clarity, which excludes the use of the same Licensed Compound(s) in any other formulation, Indication or dosage form). Such Royalty Term
shall be established on Licensed Product-by-Licensed Product and country-by-country
basis. 
  

			
	Royalty Rate - Selinexor	  	 Tiered: [**]% of Annual Net Sales of the Product in the Antengene Territory (tiers in USD):

•   [**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**]: [**]%

		
	Royalty Rate - Eltanexor	  	 Tiered: [**]% of Annual Net Sales of the Product in the Antengene Territory (tiers in USD):

•   [**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**]: [**]%

		
	Royalty Rate - KPT-9274	  	 Tiered: [**]% of Annual Net Sales of the Product in the Antengene Territory (tiers in USD):

•   [**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**]: [**]%

		
	Royalty Rate - Verdinexor	  	 Tiered: [**]% of Annual Net Sales of the Product in the Antengene Territory (tiers in USD):

•   [**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**] – [**]: [**]%

•   >[**]: [**]%

  

					
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 8.4.2    Royalty Reduction by Entry of Generic
Version and Expiration of Patent Rights. If at any time during the Royalty Term, any Third Party (other than a Sublicensee) makes all Generic Versions (defined below) of such Licensed Product commercially available in such country in the
Antengene Territory and the Generic Version(s) constitute more than [**]% of the sales volume in the country or, in Mainland China, all Karyopharm Patent Rights whose Valid Claim Covers such Licensed Product in Mainland China expire, provided,
however, that the expiration of Karyopharm Patent Rights is not caused, directly or indirectly, by any act or omission by or on behalf of Antengene or its Affiliates, then the royalty rate applicable to Net Sales of such Licensed Product in such
country shall be reduced to [**] percent ([**]%). “Generic Version” means a product that: (a) contains as an active pharmaceutical ingredient a chemical composition that is assigned the same INN (international nonproprietary
name) as is assigned to active pharmaceutical ingredient contained in the corresponding Licensed Product being marketed in the Antengene Territory; (b) obtained marketing approval in a country in the Antengene Territory by means of an abridged
procedure that relies (i) in whole or in part on the safety and efficacy data contained in the NDA for such Licensed Product submitted by Antengene in such country, and (ii) on establishing bioequivalence to the Licensed Product; and
(c) has been granted marketing approval in the Antengene Territory and is marketed by an entity other than Antengene, its Affiliates or its Sublicensees. 

8.4.3    Limits on Deductions. In no event shall the cumulative effect of the
adjustments in Section 8.4.2 and 8.4.4 reduce the royalties payable to Karyopharm pursuant to Section 8.4.1 in any Calendar Quarter to less than [**] percent ([**]%) of the amounts that would otherwise have been payable, as determined
pursuant to Section 8.4. 
 8.4.4    Third Party Royalty Set-Off. If Antengene determines in its reasonable discretion that Antengene is required to pay a royalty to a Third Party to obtain rights under Patents owned or Controlled by such Third Party that are
necessary for Antengene’s exercise of its rights under the Karyopharm Technology hereunder in the Territory (excluding the royalty under the Karyopharm Third Party Agreements), then Antengene shall have the right to credit any compensation
(milestones and royalties) due to such Third Party thereunder with respect to Licensed Products, against the royalties that are due from Antengene to Karyopharm, provided that such credit shall be [**] percent ([**]%) of the payment made by
Antengene to such Third Party and in no Calendar Quarter shall the royalties owed to Karyopharm be reduced by more than [**] percent ([**]%). 

8.5    Reports; Payment of Royalty. During the Term, following the First Commercial Sale of the
Licensed Product in any country in the Antengene Territory, Antengene shall furnish to Karyopharm (a) an estimate within [**] after the end of each Calendar Quarter of the Net Sales of each Licensed Product in each country of the Antengene
Territory and the royalties payable under this Agreement; and (b) a written report (each, a “Royalty Report”) within [**] after the end of each Calendar Quarter showing, on a Licensed Product-by-Licensed Product and country-by-

  

					
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country basis, the Net Sales of each Licensed Product in each country of the Antengene Territory and the royalties payable under this Agreement, along with (i) gross sales of the Licensed
Product in the Antengene Territory in the relevant Calendar Quarter on a country-by-country basis, (ii) Net Sales in the relevant Calendar Quarter on a country-by-country basis, (iii) all relevant exchange rate conversions in accordance with Section 8.8.3, (iv) all deductions in accordance with Section 8.4 and
(v) the amount of any payment due from Antengene to Karyopharm, calculated in accordance with this Article 8. Calendar Quarterly payments of royalties from Antengene to Karyopharm shall be due on [**] after the end of each Calendar
Quarter and receipt of invoice by Antengene. Antengene and its Related Parties involved in Commercializing Licensed Products shall keep complete and accurate records in sufficient detail to enable the royalties and other payments payable
hereunder to be determined. In addition, Antengene and its Related Parties shall comply with any applicable reporting requirements under the Karyopharm Third Party Agreements. 

8.6    Audits. 

8.6.1    Antengene shall keep, and shall require its Related Parties to keep, full, true and
accurate books of account containing all particulars that may be necessary for the purpose of calculating the amounts payable by Antengene under this Agreement, including, as applicable, records of Development activities and Net Sales, and the
amount of Joint Patent Costs payable by Karyopharm with respect to Joint Patent Rights pursuant to Section 12.4.3. Karyopharm shall keep, and shall require its Related Parties to keep, full, true and accurate books of account containing all
particulars that may be necessary for the purpose of calculating the amounts payable by Antengene under this Agreement, including, as applicable, records of Manufacturing activities and Karyopharm’s Cost of Manufacturing for the Licensed
Compound and Licensed Product, and Joint Patent Costs payable by Antengene with respect to Joint Patent Rights pursuant to Section 12.4.3. Such books of accounts shall be kept at each Party’s principal place of business for a period of at
least [**] Calendar Years after the date on which the relevant Development or Manufacturing activity or Net Sales occurred or the relevant Joint Patent Costs were incurred. Either Party (the “Auditing Party”) has the right, at its
expense (except as set forth below), to engage an independent, certified public accountant selected by such Auditing Party and reasonably acceptable to the other Party (the “Auditor”) to perform, on behalf of such Auditing Party, an
audit of such books and records that are deemed necessary by such Auditor to report on the correctness of any report or payments made or to have been made under this Agreement. 

8.6.2    The Auditing Party shall provide reasonable, but at least [**], prior written notice to
the other Party of any requested audit and shall conduct such audit during regular business hours in such a manner as to not unnecessarily interfere with the other Party’s normal business activities. Any audit shall be limited to records for
the [**] Calendar Years prior to audit notification. The Auditing Party shall not perform an audit more frequently than [**] nor more frequently than [**] with respect to records covering any specific period of time, except if Karyopharm is required
to do so pursuant to a Karyopharm Third Party Agreement. 

  

					
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 8.6.3    The Auditing Party shall use all such
records of the other Party only for the purpose of verifying payments due hereunder, and shall treat such records as the other Party’s Confidential Information. The Auditor shall be obligated to execute a reasonable confidentiality agreement
with the other Party prior to commencing any such audit. The Auditor shall only share the results of the audit, not the underlying records, with the Auditing Party. Any final audit report shall be shared by the Auditing Party with the other Party.

 8.6.4    Notwithstanding Section 8.6.1, if the audit uncovers an underpayment in any
Calendar Quarter by a Party that exceeds [**] percent ([**]%) of the total payment owed, then the reasonable out-of-pocket fees incurred by the Auditing Party with
respect to such audit shall be paid by the other Party. In the event such audit leads to the discovery of a discrepancy to the Auditing Party’s detriment that exceeds [**] percent ([**]%) of the total payment owed, the other Party will pay any
undisputed underpaid amount of the discrepancy, plus interest on the underpayment at a rate per annum equal set forth in Section 8.9 within [**] after receipt by the other Party of an invoice for corresponding payment and taxation documents
delivered from the Auditing Party, subject to the other Party’s receipt of such final audit report from the Auditor. If the audit uncovers an overpayment in any Calendar Quarter by a Party, the other Party has right to credit such overpayment
against the royalties that are due from the other Party to the Auditing Party. 
 8.7    Karyopharm Third
Party Agreement Payments. Karyopharm shall be solely responsible for any royalties or other payments due under the Karyopharm Third Party Agreements. 

8.8    Exchange Rate.  

8.8.1    Payment Method. All payments to be made by Antengene under this Agreement shall
be made by bank wire transfer in immediately available funds to bank account as may be designated by Karyopharm from time to time. The first designated bank account of Karyopharm shall be as follows: 

 

			
	Account name:	  	[**]
	Account number:	  	[**]
	Bank name:	  	[**]
	Beneficiary Address:	  	[**]
	Swift code:	  	[**]
	Routing/Transit for Wires:	  	[**]
	Routing/Transit for ACH	  	[**]

  

					
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 8.8.2    Currency Conversion. All amounts
specified in this Agreement are in US Dollars. All payments hereunder shall be made in US Dollars. All payments and payment related terms where US Dollar amount has yet to be determined, including but not limited to Net Sales made in one or
more currencies other than US Dollars (“Third Country Currencies”) for the purposes of determining the royalty payment to be made in US Dollars, and sales milestone thresholds, shall be converted from the Third Country Currency into US
Dollars based on the exchange rate published by the People’s Bank of China as of the last day of the calendar quarter applicable to the payment or payment related term, provided that no deduction from any amount shall be made in
respect of bank fees or charges. 
 8.8.3    Conversion of Net Sales. The amount of Net
Sales made during any Calendar Quarter shall be determined by converting the portion of such Net Sales made in each Third-Country Currency into US Dollars, as defined in section 8.8.2 between the relevant Third-Country Currency, on the one hand, and
US Dollars, on the other hand. All currency conversions described in this Section 8.8.3 shall be made in accordance with GAAP or IFRS, to the extent reasonable and consistently applied. 

8.9    Late Payments. Any amount owed by a Party to the other Party under this Agreement that is not
paid on or before the date such payment is due shall bear interest at a rate per annum equal to [**] percent ([**]%) per month, calculated based on the number of days such payments are paid after the date such payments are due, compounded monthly
and computed on the basis of a year of three hundred sixty-five (365) days for the actual number of days’ payment is delinquent. 

8.10    Payment Procedure and Blocked Payments. Upon the occurrence of each payment event set forth
in this Agreement and the due date for paying royalties, Karyopharm shall provide an invoice to Antengene for the applicable portion of the fees and a pro forma invoice for the upfront payment. The payment will be payable within [**] upon
Antengene’s receipt of the invoice. If, by reason of Law in any jurisdiction in the Antengene Territory, it becomes impossible or illegal for Antengene to transfer milestone payments, royalties or other payments under this Agreement to
Karyopharm, (a) Antengene shall promptly notify Karyopharm; and (b) Antengene or its Affiliate shall pay Karyopharm the amounts due from an account in another jurisdiction in the Antengene Territory; provided, however, that
if there is no jurisdiction in the Antengene Territory from which it is legal for Antengene to transfer payments to Karyopharm, Antengene shall deposit such payments in local currency in the relevant jurisdiction to the credit of Karyopharm in a
recognized banking institution designated by Karyopharm or, if none is designated by Karyopharm within a period of [**], in a recognized banking institution selected by Antengene and identified in a written notice given to Karyopharm, and (ii)
Karyopharm may terminate this Agreement if Antengene is not permitted by Law to transfer payments to Karyopharm for a period of [**]. 

8.11    Taxes. In the event that Antengene is required to withhold and pay any tax to
the Governmental Authorities in any country in the Antengene Territory with respect to any payment to Karyopharm, the payment shall be appropriately adjusted so that Karyopharm shall receive an additional payment (a “Gross-Up Payment”) so that the amount of such payment shall equal the amount of the payment which Karyopharm would otherwise be entitled to receive pursuant to this

  

					
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Agreement except for the upfront payment for which Karyopharm agrees to accept a payment reduced by [**] percent ([**]%) of the tax withholding which shall not exceed [**] percent ([**]%) of the
total upfront payment. Antengene and Karyopharm shall cooperate to obtain the documentation necessary to claim a reduction of or exemption for payment of any withholding tax that may be available under an applicable tax treaty or under Applicable
Laws and Guidelines and Karyopharm shall use Commercially Reasonable Efforts to obtain a deduction, credit or recovery for foreign taxes paid in China on its behalf by Antengene. To the extent that Karyopharm receives such deduction, credit or
recovery, Karyopharm shall inform Antengene any such deduction, credit or recovery within [**] of the date that it receives the deduction, credit or recovery and allow Antengene to credit such deduction, credit or recovery against the royalties that
are due from the Antengene to Karyopharm. 
 8.12    If Karyopharm initiates clinical development of Verdinexor
or licenses any Third Party to Develop Verdinexor for the diagnosis, treatment and/or prevention of cancer in humans in any territory, both Parties shall negotiate mutually agreeable financial terms for the additional Field (for clarity, the
following maximum payment terms are for Verdinexor in cancer in humans and shall be in addition to the financial terms for the granted Field under this Agreement for Verdinexor as defined in Section 1.28). In no event, shall all payments from
Antengene to Karyopharm exceed: (a) USD [**] upon [**] in treating cancer; (b) USD [**] upon [**] (c) USD [**] upon [**] in treating cancer; and (d) additional [**]% of Annual Net Sales for Verdinexor. 

 

	9.	CONFIDENTIALITY AND PUBLICATION 

 9.1    Nondisclosure
Obligation. 
 9.1.1    Except with the prior written consent of the Disclosing Party or
as otherwise set forth herein, during the Term and for a period of [**] after any termination or expiration of this Agreement, all Confidential Information of the Disclosing Party (a) shall be maintained in confidence by the Receiving Party,
(b) shall not be disclosed by the Receiving Party to an Affiliate or Third Party, and (c) shall not be used by the Receiving Party for any purpose except to perform its obligations and to exploit its rights under this Agreement. 

 9.1.2    Notwithstanding the obligations of confidentiality and
non-use set forth above the Receiving Party may provide the Disclosing Party’s Confidential Information, and disclose the existence and terms of this Agreement, as may be reasonably required in order to
perform its obligations and to exploit its rights under this Agreement, and specifically (a) to its Related Parties, and the Receiving Party’s and its Related Parties’ employees, directors, officers, agents, consultants, advisors or
other Third Parties who need to know the Confidential Information of the Disclosing Party for the performance of its obligations or to exercises its rights hereunder (or for such Persons to determine their interest in performing such activities) in
accordance with this Agreement, in each case who are under an obligation of confidentiality with respect to such Confidential Information that is no less stringent than the terms of this Section 9.1, provided that, it being
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notwithstanding any other provision of this Agreement, in the case of disclosures made to clinical trial sites, investigators, CROs or other Third Parties involved in the Development of the
Licensed Compound or Licensed Product, the duration for the obligation of confidentiality and non-use provided in a Party’s agreement with such clinical trial sites, investigators, CROs or other Third
Parties may be less than the duration for the obligation of confidentiality and non-use in this Agreement so long as such agreement specifies a duration for the obligation of confidentiality and non-use at least [**] from the expiration or termination date of such agreement with clinical trial sites, investigators, CROs or other Third Parties; (b) to Governmental Authorities or Regulatory Authorities
in order to seek or obtain Patent Rights or Regulatory Approvals in a manner not inconsistent with this Agreement or to perform its obligations or exploit its rights under this Agreement; provided that such Confidential Information
shall be disclosed only to the extent reasonably necessary to do so; (c) to the extent required by Governmental Authority or Law; and (d) to its actual or bona fide prospective acquirers, underwriters, investors, lenders or other financing
sources, its actual or bona fide prospective collaborators, licensors, licensees or strategic partners, and to its consultants and advisors with respect to any actual or bona fide prospective acquisition, sale, financing or collaboration of the
Receiving Party, in each case who are under an obligation of confidentiality with respect to such information that is no less stringent than the terms of this Section 9.1, provided that such Confidential Information is disclosed
only to the extent reasonably necessary to do so. In addition, Karyopharm may disclose Antengene’s Confidential Information to the counterparty to any Karyopharm Third Party Agreement, which is under an obligation of confidentiality with
respect to such Confidential Information that is no less stringent than the terms of this Section 9.1, to comply with such Third Party Agreement, provided that such Confidential Information is disclosed only to the extent
reasonably necessary to do so and Karyopharm shall be fully responsible for compliance with such an obligation of confidentiality and non-use by such counterparty to any Karyopharm Third Party Agreement. If
the Receiving Party is required by Governmental Authority or Law to disclose the Disclosing Party’s Confidential Information, the Receiving Party shall, to the extent consistent with Law, promptly inform the Disclosing Party of the required
disclosure in order to provide the Disclosing Party an opportunity to challenge or limit the disclosure obligations. Confidential Information that is required to be disclosed by Governmental Authority or Law shall remain otherwise subject to
the confidentiality and non-use provisions of this Section 9.1. If a Party concludes that a copy of this Agreement shall be filed with the U.S. Securities and Exchange Commission or similar
regulatory agency in a country other than the United States, then, to the extent consistent with Law, such Party will provide the other Party with a copy of this Agreement showing any provisions hereof as to which the Party proposes to request
confidential treatment, will provide the other Party with an opportunity to comment on any such proposed redactions and to suggest additional redactions, and will take such Party’s reasonable and timely comments into consideration before filing
this Agreement. 

  

					
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 9.2    Publication and Publicity.  

9.2.1    Publication. Antengene and Karyopharm each acknowledge the other
Party’s interest in publishing certain key results of the activities conducted under this Agreement. Antengene may publish or publicly disclose such results with respect to a Clinical Study or Development activity that is part of
Antengene’s Development Plan in which Karyopharm is not participating, subject to Karyopharm’s right to review as required in this Section 9.2.1. Karyopharm may publish or publicly disclose results from any of its activities,
subject to Antengene’s right to review as required in this Section 9.2.1. Each Party also recognizes the mutual interest in obtaining valid patent protection and in protecting trade secret information. Consequently, except for
disclosures permitted pursuant to Section 9.1 and 9.2.2(a) through (c), in case Antengene wishes to make a publication or public presentation that pertains to results concerning Licensed Compound(s) or Licensed Product(s) which has not been
previously disclosed, Antengene shall deliver to the other Party a copy of the proposed written publication or presentation at least [**] prior to submission for publication or presentation. Except for disclosures permitted pursuant to
Section 9.1 and 9.2.2(a) through (c), in case that Karyopharm wishes to make (i) a publication or public presentation that pertains to results concerning Licensed Compound(s) or Licensed Product(s) in an internationally recognized
publication or conference or (ii) such publication or public presentation is one that, Karyopharm reasonably judges, contains Confidential Information of Antengene, Karyopharm shall deliver to Antengene a copy of the proposed written
publication or presentation at least [**] prior to submission for publication or presentation. The reviewing Party shall have the right to (a) review and request that the other Party remove all Confidential Information of the other Party and to
propose modifications to the publication or presentation for patent reasons, trade secret reasons or business reasons, and the other Party will remove all Confidential Information of the reviewing Party if requested by the reviewing Party, and
(b) to request a reasonable delay in publication or presentation in order to protect patentable information. If the reviewing Party requests a delay, the other Party shall delay submission or presentation for a period of [**] (or such shorter
period as may be mutually agreed by the Parties considering the time constraints for submission to a particular conference or journal) to enable the reviewing Party to file patent applications protecting the reviewing Party’s rights in
such information in accordance with Article 12 or may agree to remove the patentable information from the publication or presentation in question. With respect to any proposed publications or disclosures by investigators or academic or non-profit collaborators working with a Party, such materials shall be subject to review and delay under this Section 9.2 to the extent that such Party has the right and ability (after using Commercially
Reasonable Efforts to obtain such right and ability) to do so. 

9.2.2    Publicity. Except as set forth in Section 9.1 above and
Section 9.2.2(a) through(c) below, the terms of this Agreement may not be disclosed by either Party, and no Party shall use the name, trademark, trade name or logo of the other Party or its employees in any publicity, news release or disclosure
relating to this Agreement, its subject matter or the activities of the Parties hereunder without the prior express written permission of the other Party, except as may be required by Law or expressly permitted by the terms hereof. 

  

					
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 (a)    Following the execution of this Agreement, the Parties shall issue a
joint press release of which content shall be mutually agreed between the Parties. After such initial press release, except as provided in Section 9.2.2(b), neither Party shall issue a press release or public statement relating to this
Agreement without the prior written approval of the other Party, which approval shall not be unreasonably withheld, conditioned or delayed, except that a Party may (i) once a press release or other public statement has been made by a Party in
accordance with this Agreement, make subsequent public disclosure of any of the information contained in such press release or other written statement, without the approval of the other Party, and (ii) upon prior written notice, to the extent
permitted under applicable Law, to the other Party, issue a press release or public announcement as required, in the reasonable judgment of such Party, by Law. 

(b)    In addition, either Party may, upon prior written notice, to the extent permitted under applicable Law, to the
other Party, issue a press release or make a public disclosure relating to such Party’s Development, use, Manufacturing, having Manufactured or Commercialization activities with respect to Licensed Products in the Field in accordance with this
Agreement and Karyopharm may issue a press release or make a public disclosure relating to the Development, use, Manufacturing, having Manufactured or Commercialization activities with respect to Licensed Products outside the Field, provided
that such press release or public disclosure does not disclose Confidential Information of the other Party and Karyopharm provides such press release or public disclosure to Antengene before it is made public. Should Antengene wish to issue
such press release or make such a public disclosure, Antengene shall provide Karyopharm with such draft at least [**] prior to such press release or public disclosure for other Party’s review. Karyopharm shall have the right to propose
modifications to such press release or public disclosure for patent reasons or, trade secret reasons or business reasons, and Antengene will remove all Confidential Information of Karyopharm if requested by Karyopharm. Antengene shall have the right
to review and provide comments on any Karyopharm press release or public disclosure prior to such disclosure and Karyopharm shall use Commercially Reasonable Efforts to review and consider such comments. Karyopharm shall delete any Antengene
Confidential Information as requested by Antengene. Either Party may publicly announce or disclose without regard to the preceding requirements of this Section 9.2.2(b) any information that was previously publicly disclosed pursuant to this
Section 9.2.2(b). Furthermore, either Party may issue a full translation of a press release or public disclosure to be issued by the other Party. 

(c)    Each Party shall be entitled to include the name and picture of the other Party within a list of collaborators
with consent of the other Party. Once a Party obtains such consent from the other Party, such Party may use the name and picture of such other Party in a Party’s annual report, company brochure or website and so on, and such Party may continue
to use them in the same. 

  

					
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	10.	REPRESENTATIONS, WARRANTIES AND COVENANTS; DISCLAIMER 

10.1    Mutual Representations and Warranties. Each Party represents and warrants to the other
Party that as of the Effective Date: 
 10.1.1    It is duly organized and validly existing under
the Law of its jurisdiction of incorporation or formation, and has full corporate or other power and authority to enter into this Agreement, and to carry out the provisions hereof; 

10.1.2    It is duly authorized to execute and deliver this Agreement, and to perform its
obligations hereunder, and the individual(s) executing this Agreement on its behalf has been duly authorized to do so by all requisite corporate action; 

10.1.3    This Agreement is legally binding upon it and enforceable in accordance with its terms,
subject to the general principles of equity and to bankruptcy, insolvency, moratorium and other similar Law affecting the enforcement of creditors’ rights generally; 

10.1.4    The execution, delivery and performance of this Agreement by it does not conflict with any
agreement, instrument or understanding, oral or written, to which it is a party and by which it may be bound, or with its charter or by-laws; 

10.1.5    Neither the execution and delivery of this Agreement nor the performance hereof by such
Party requires such Party to obtain any permit, authorization or consent from any Governmental Authority (except for any intellectual property rights, INDs, Regulatory Approvals, pricing or reimbursement approvals, Manufacturing-related approvals or
similar approvals necessary for Manufacture or having Manufactured in the Field for the Antengene Territory, or Development, use or Commercialization in the Field in the Antengene Territory, of the Licensed Product as set forth herein), or, to its
and its Affiliates’ Knowledge, from any other Person; 
 10.1.6    It has not granted any
right to any Third Party that would conflict with the rights granted to the other Party hereunder; and 

10.1.7    Neither it nor any of its Affiliates has been debarred or is subject to debarment and
neither Party nor any of its Affiliates has, to its Knowledge after reasonable inquiry, used in any capacity, in connection with its Development of the Licensed Compound or the Licensed Product, any Person that has been debarred pursuant to
Section 306 of the U.S. Federal Food, Drug, and Cosmetic Act, as amended, or any comparable Law in any country, or that is the subject of a conviction described in such section or any comparable Law in any country.  

10.2    Representations and Warranties of Karyopharm. Karyopharm represents and warrants to Antengene
that as of the Effective Date:  
 10.2.1    Karyopharm is the sole and exclusive owner of,
or otherwise Controls, the Karyopharm Technology in the Field in the Territory and has the right to grant the licenses to the Karyopharm Technology to Antengene pursuant to this Agreement; 

  

					
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 10.2.2    To the Knowledge of Karyopharm and its
Affiliates, Schedule 10.2.2 is an accurate listing of all Karyopharm Patent Rights owned or Controlled by Karyopharm or its Affiliates as of the Effective Date that are necessary or useful for Manufacture or having Manufactured in the Field
for the Antengene Territory, or Development, use or Commercialization in the Field in the Antengene Territory, of the Licensed Product; 

10.2.3    Any Karyopharm Technology is free and clear of liens, charges or encumbrances; 

10.2.4     To the Knowledge of Karyopharm and its Affiliates, any Karyopharm Patent Rights specified
in Schedule 10.2.2 are not invalid or unenforceable in whole or part or, as to patent application, has not lapsed, or in the case of a provisional patent application has not been cancelled, withdrawn or abandoned without the possibility of
revival; 
 10.2.5    To the Knowledge of Karyopharm and its Affiliates, except manufacture and
supply of Licensed Compound as reagent by reagent supplier, there is no material infringement or misappropriation of any Karyopharm Technology by any Third Party; 

10.2.6    To the Knowledge of Karyopharm and its Affiliates, any Person who was involved in the
invention for the Karyopharm Patent Rights, has executed and delivered to Karyopharm or its Affiliates, as the case may be, an agreement assigning to Karyopharm (or its applicable Affiliate) all rights, titles and interests in and to all the
inventions for the Karyopharm Patent Rights arising out of or relating to such Person’s activities with respect to the Licensed Compound and the Licensed Product; 

10.2.7    Karyopharm and its Affiliates have generated, prepared, maintained and retained all Data
and regulatory documentation that is required to be generated, maintained or retained pursuant to and in accordance with GLP and GCP and applicable Law in all material respects, and all such Data and regulatory documentation are true, complete and
correct and what it purports to be. Karyopharm and its Affiliates have conducted, (and each of their respective contractors and consultants have conducted) its research and Development activities in accordance with applicable GLP and GCP and
applicable Law in each case in all material respects, provided, however, with respect to any information provided by Karyopharm to Antengene prior to the Effective Date relating to any Clinical Studies, Antengene acknowledges and
agrees that such information is preliminary, based on unaudited clinical site data and will not be finalized until the completion of data analysis, lock and transfer; 

10.2.8    Karyopharm has disclosed or made available to Antengene all material information in its or
its Affiliates’ possession and Control relating to the Licensed Compound and the Licensed Product, and the Development, Manufacture, use and Commercialization of the Licensed Compound and the Licensed Product as

  

					
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conducted prior to the Effective Date, including by providing or making available complete and correct copies of the following: (a) adverse event reports; (b) clinical study reports and
material study data; and (c) FDA inspection reports, notices of adverse findings, warning letters, Regulatory Approval filings and other material regulatory documentation; 

10.2.9    To the Knowledge of Karyopharm and its Affiliates there are no, and there have been no,
material safety issues relating to the Licensed Compound or the Licensed Product; 

10.2.10    Karyopharm and its Affiliates are not aware of any fact or circumstance that would
reasonably be expected to materially adversely affect the acceptance or the subsequent approval, by Regulatory Authority of any filing, application or request for Regulatory Approval; 

10.2.11    To the best knowledge of Karyopharm and its Affiliates (a) there are not any Patent
Rights or Know-How owned or controlled by a Third Party which would be infringed or misappropriated by the Development, Manufacture, use or Commercialization of the Licensed Products in the Field in the
Antengene Territory and Karyopharm Territory, or (b) there are not any threatened claims or litigation seeking to invalidate or otherwise challenge the Karyopharm Patent Rights or Karyopharm’s or its Affiliates’ rights therein; 

10.2.12    Karyopharm and its Affiliates have taken commercially reasonable steps to protect,
preserve and maintain the confidentiality of all confidential or non-public information included in Karyopharm Know-How, including by disclosing such Karyopharm Know-How to Third Parties only under terms of confidentiality. To the Knowledge of Karyopharm and its Affiliates, no breach of such confidentiality obligations has been committed by any Third Party; 

10.2.13    To the Knowledge of Karyopharm and its Affiliates, neither Karyopharm nor its Affiliates,
nor any of its or their respective directors, officers, employees or agents has (a) committed an act, (b) made a statement or (c) failed to act or make statement, in any case ((a), (b) or (c)), that (x) 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 Development, Manufacture, having Manufactured, use or Commercialization of the Licensed Compound or the Licensed Product or
(y) could reasonably be expected to provide a basis for the FDA or any other Regulatory Authority 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, with respect to the Development, Manufacture, having Manufactured, use or Commercialization of the Licensed Compound or the Licensed Product; and 

10.2.14    With respect to each Karyopharm Third Party Agreement set forth on Schedule 1.49, (a)
Karyopharm is not in breach under such Third Party Agreement; and (b) Karyopharm has not received any notice of breach under such Third Party Agreement. 

  

					
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 10.3    Mutual Covenants. During the Term, each Party
covenants as follows; 
 10.3.1    It will not enter into any agreement, instrument or
understanding, oral or written, with any Third Party which conflicts with this Agreement; 

10.3.2    It will not grant any right to any Third Party that would conflict with the rights granted
to the other Party hereunder; and 
 10.3.3    It will not, and it will use Commercially
Reasonable Efforts to ensure its Related Parties will not conduct any activities which would be subject to debarment and neither Party will use in any capacity, and either Party will use Commercially Reasonable Efforts to ensure any Related Party
will not use, in connection with the performance of its obligations under this Agreement, any Person that has been debarred pursuant to Section 306 of the U.S. Federal Food, Drug, and Cosmetic Act, as amended, or any comparable Law in any
country, or that is the subject of a conviction described in such section or any comparable Law in any country. Each Party agrees to inform the other Party in writing immediately if it or any Person that is performing activities under this
Agreement, is debarred or is subject to debarment or is the subject of a conviction described in such Section 306, or any comparable Law in any country, or if any action, suit, claim, investigation or legal or administrative proceeding is
pending or, to the notifying Party’s Knowledge, is threatened, relating to the debarment or conviction of the notifying Party or any Person used in any capacity by such Party or any of its Related Party in connection with the performance of its
obligations under this Agreement. 
 10.4    Karyopharm’s Covenants. During the Term, Karyopharm covenants
as follows; 
 10.4.1    Any Karyopharm Technology will be free and clear of liens, charges or
encumbrances except for any liens, charges or encumbrances that may be incurred in connection with a financing arrangement by Karyopharm, provided that such liens, charges or encumbrances will not affect the ability of Antengene to Develop, use,
obtain Regulatory Approval for and Commercialize the Licensed Products in the Field in each country in the Antengene Territory and to Manufacture the Licensed Compound and Licensed Product in the Field for the Antengene Territory; and Confidential.

 10.4.2     With respect to each Karyopharm Third Party Agreement set forth on Schedule 1.49,
Karyopharm will not conduct any activities that would be reasonably expected to result in a breach of any such Third Party Agreement which would affect the license grant to Antengene under this Agreement; and 

  

					
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 10.4.3    Karyopharm will obtain Katholieke
Universiteit Leuven’s assurances that it will not act adversely to affect the license grant to Antengene under this Agreement. 

10.5    Warranty Disclaimer. EXCEPT AS OTHERWISE EXPRESSLY PROVIDED IN THIS AGREEMENT, NEITHER PARTY
MAKES ANY REPRESENTATION OR EXTENDS ANY WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, TO THE OTHER PARTY WITH RESPECT TO ANY TECHNOLOGY, LICENSED COMPOUND, LICENSED PRODUCT, GOODS, SERVICES, RIGHTS OR SUBJECT MATTER OF THIS AGREEMENT AND EACH
PARTY HEREBY DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT WITH RESPECT TO ANY AND ALL OF THE FOREGOING. EACH PARTY HEREBY DISCLAIMS ANY
REPRESENTATION OR WARRANTY THAT THE DEVELOPMENT, USE, MANUFACTURE, HAVING MANUFACTURED OR COMMERCIALIZATION OF THE LICENSED COMPOUNDS OR THE LICENSED PRODUCTS PURSUANT TO THIS AGREEMENT WILL BE SUCCESSFUL OR THAT ANY PARTICULAR SALES LEVEL WITH
RESPECT TO A LICENSED PRODUCT WILL BE ACHIEVED. 
  

	11.	INDEMNIFICATION; LIMITATION OF LIABILITY; INSURANCE 

11.1    Indemnification by Antengene. Subject to Section 12.6.1, Antengene shall indemnify, hold
harmless, and defend Karyopharm, its Related Parties, and their respective directors, officers, employees, agents and representatives (collectively, the “Karyopharm Indemnitees”) from and against any and all Losses to the extent
arising out of or resulting from, directly or indirectly, (a) any breach of, or inaccuracy in, any representation or warranty made by Antengene in this Agreement, or any breach or violation of any covenant or agreement of Antengene in or in the
performance of this Agreement, (b) the negligence or willful misconduct of Antengene Indemnitees, in the performance of Antengene’s obligations under this Agreement, or (c) the Development, Manufacture, having Manufactured, use or
Commercialization of Licensed Compounds and Licensed Products by or on behalf of Antengene Indemnitees. Antengene shall have no obligation to indemnify, hold harmless and defend the Karyopharm Indemnitees to the extent that Karyopharm is obligated
to indemnify, hold harmless and defend Antengene Indemnitees under Section 11.2. 

11.2    Indemnification by Karyopharm. Subject to Section 12.6.1, Karyopharm shall indemnify,
hold harmless, and defend Antengene, its Related Parties and their respective directors, officers, employees, agents and representatives (collectively, the “Antengene Indemnitees”) from and against any and all Losses to the extent
arising out of or resulting from, directly or indirectly, (a) any breach of, or inaccuracy in, any representation or warranty made by Karyopharm in this Agreement, or any breach or violation of any covenant or agreement of Karyopharm in or in
the performance of this Agreement, (b) the negligence or willful misconduct of Karyopharm Indemnitees, in the performance of Karyopharm’s obligations under this Agreement, or (c) the Development, Manufacture, having Manufactured, use
or Commercialization of Licensed Compounds and Licensed Products by or on behalf of Karyopharm Indemnitees. Karyopharm shall have no obligation to indemnify, hold harmless and defend the Antengene Indemnitees to the extent that Antengene is
obligated to indemnify, hold harmless and defend Karyopharm Indemnitees under Section 11.1. 

  

					
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 11.3    Indemnification Procedure. In the event of any
such claim against any Antengene Indemnitee or Karyopharm Indemnitee (individually, an “Indemnitee”), the indemnified Party shall promptly notify the other Party in writing of the claim and the indemnifying Party shall manage and
control, at its sole expense, the defense of the claim and its settlement. The indemnifying Party may settle the claim only with the consent of the applicable Indemnitees, which shall not be unreasonably withheld, conditioned or delayed;
provided that an Indemnitee shall have no obligation to consent to any settlement of any such claim which imposes on such Indemnitee any liability or obligation which cannot be assumed and performed in full by the indemnifying Party.
The applicable Indemnitee shall cooperate with the indemnifying Party and may, at its option and expense, be represented in any such action or proceeding. No Indemnitee may settle any such claim without the prior written consent of the
indemnifying Party, which shall not be unreasonably withheld, delayed or conditioned. The indemnifying Party shall not be liable for any settlements, litigation costs or expenses incurred by any Indemnitee without the indemnifying Party’s
written consent. Notwithstanding the foregoing, if the indemnifying Party believes that any of the exceptions to its obligation of indemnification of the Indemnitees set forth in Sections 11.1 or 11.2 may apply, the indemnifying Party shall
promptly notify the Indemnitees, which shall then have the right to be represented in any such action or proceeding by separate counsel at their expense; provided that the indemnifying Party shall be responsible for payment of such
expenses if the Indemnitees are ultimately determined to be entitled to indemnification from the indemnifying Party for the matters to which the Indemnitee notified the indemnifying Party of the application of Sections 11.1 or 11.2, as applicable.

 11.4    Limitation of Liability. NEITHER PARTY WILL BE LIABLE FOR SPECIAL, INCIDENTAL,
CONSEQUENTIAL OR PUNITIVE DAMAGES ARISING OUT OF OR RELATING OT THIS AGREEMENT OR THE EXERCISE OF ITS RIGHTS HEREUNDER, OR LOST PROFITS ARISING FROM OR RELATING TO THIS AGREEMENT, REGARDLESS OF ANY NOTICE OF SUCH DAMAGES, EXCEPT AS A RESULT OF SUCH
PARTY’S WILLFUL MISCONDUCT OR GROSS NEGLIGENCE OR A BREACH OF SECTION 7.3 OR ARTICLE 9. NOTHING IN THIS SECTION 11.4 IS INTENDED TO LIMIT OR RESTRICT THE INDEMNIFICATION RIGHTS OR OBLIGATIONS OF EITHER PARTY. 

11.5    Insurance. Either Party shall, at its own expense, procure and maintain product liability
insurance or self-insurance in the amount sufficient to perform its obligation hereunder. Upon the other Party’s request, a Party shall promptly provide the other Party with copies of certificates of insurance evidencing such coverage. 

 

	12.	INTELLECTUAL PROPERTY OWNERSHIP, PROTECTION AND RELATED MATTERS; BRAND NAME 

12.1    Inventorship. For purposes of Section 12.2, inventorship for inventions and discoveries
first made during the course of the performance of activities pursuant to this Agreement shall be determined in accordance with U.S. Patent Law for determining inventorship. 

  

					
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 12.2    Ownership. Karyopharm shall own the entire
right, title and interest in and to all inventions and discoveries (and Patent Rights claiming patentable inventions therein) first made or discovered solely by directors, officers or employees of Karyopharm or its Affiliates, or acquired solely by
Karyopharm or its Affiliates. Antengene shall own the entire right, title and interest in and to all inventions and discoveries (and Patent Rights claiming patentable inventions therein) first made or discovered solely by directors, officers
or employees of Antengene or its Affiliates, or acquired solely by Antengene or its Affiliates. The Parties shall jointly own an individual equal interest in any Joint IP. 

12.3    Disclosure. Each Party shall promptly disclose to the other Party Joint IP and all inventions
made by a director, an officer or an employee of such Party or its Affiliates in the performance of its obligations under this Agreement. 

12.4    Prosecution and Maintenance of Patent Rights.  

12.4.1    Antengene Technology.  

(a)    Subject to Section 12.4.1(b), Antengene has the sole responsibility to, at Antengene’s discretion and
expense, file, prosecute, and maintain all Patent Rights comprising Antengene Technology (other than Joint Patent Rights), in Antengene’s name. 

(b)    In the event that Antengene elects not to seek or continue to seek or maintain patent protection on any Antengene
Patent Rights in any country in the Karyopharm Territory, Karyopharm shall have the right (but not the obligation), at its expense, to seek, prosecute and maintain patent protection on such Antengene Patent Rights in such country in the name of
Antengene. Antengene shall use Commercially Reasonable Efforts to make available to Karyopharm and its authorized attorneys, agents or representatives, such of its employees as are reasonably necessary to assist Karyopharm in obtaining and
maintaining the patent protection described under this Section 12.4.1(b). Antengene shall sign or use Commercially Reasonable Efforts to have signed all legal documents necessary for Karyopharm to transfer such patent applications or
patents from Antengene to Karyopharm. 
 12.4.2    Karyopharm Technology. 

 (a)    Subject to Section 12.4.2(b), Karyopharm has the sole responsibility to, at Karyopharm’s discretion
and expense, file, conduct prosecution, and maintain, all Patent Rights comprising Karyopharm Technology (other than Joint Patent Rights), in Karyopharm’s name. As between Karyopharm and Antengene, Karyopharm shall prosecute and
maintain the Karyopharm Patent Rights in the Antengene Territory.  
 (b)    Notwithstanding
Section 12.4.2(a), Karyopharm shall consult with Antengene on the preparation, filing, prosecution, and maintenance of all Karyopharm Patent Rights in the Antengene Territory. Karyopharm shall furnish Antengene with copies of proposed filings
and documents received from or filed with the relevant patent offices with respect to Karyopharm Patent Rights and such other documents directly related to the prosecution and maintenance of Karyopharm Patent Rights in the Antengene Territory
reasonably necessary for Antengene to exercise its rights under this Section 12.4.2(b), and, as applicable, in sufficient time prior to filing such document or making any payment due thereunder to allow for review and comment by Antengene and
shall consider in good faith timely comments from Antengene thereon. 

  

					
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 (c)    In the event that Karyopharm elects not to seek or continue to seek
or maintain patent protection on any Karyopharm Patent Right in any country in the Antengene Territory, Antengene shall have the right (but not the obligation), at its expense, to seek, prosecute and maintain patent protection on such Karyopharm
Patent Right in such country in the Antengene Territory in the name of Karyopharm, subject to the rights granted to one of Karyopharm’s Third Party Licensees. Karyopharm shall use Commercially Reasonable Efforts to make available to Antengene
and its authorized attorneys, agents or representatives, such of its employees as are reasonably necessary to assist Antengene in obtaining and maintaining the patent protection described under this Section 12.4.2(c). Karyopharm shall
sign or use Commercially Reasonable Efforts to have signed all legal documents necessary for Antengene to transfer such patent applications or patents from Karyopharm to Antengene. Such Karyopharm Patent Right in such country shall not be taken into
account in determining the Royalty Term. 
 12.4.3    Joint Patent
Rights.  
 (a)    Upon receiving notice of the creation of Joint Patent Rights, the IP Working Group
shall determine which Party will be responsible of obtaining and maintaining Joint Patent Rights. Such Party (the “Joint IP Prosecuting Party”) shall file, prosecute, and maintain all Joint Patent Rights throughout the world, in the
names of both Karyopharm and Antengene. The Joint IP Prosecuting Party shall provide the other Party an opportunity to review and comment on material documents related to such filing, prosecution and maintenance in accordance with this
Section 12.4.3, which comments the Joint IP Prosecuting Party shall consider in good faith. Each Party shall at its own cost, sign, or use Commercially Reasonable Efforts to have signed, all legal documents necessary to file and
prosecute patent applications or to obtain or maintain patents in respect of such Joint Patent Rights. 
 (b)    In the
event that the Joint IP Prosecuting Party elects not to file or continue to prosecute or maintain patent protection on any Joint Patent Rights anywhere in the world, the other Party shall have the right (but not the obligation) to file, prosecute
and maintain Joint Patent Rights in the names of both Karyopharm and Antengene. If such other Party exercises such right, the Joint IP Prosecuting Party shall use Commercially Reasonable Efforts to make available to such other Party and its
authorized attorneys, agents or representatives, such of its employees as are reasonably necessary to assist such other Party in obtaining and maintaining the patent protection described under this Section 12.4.3(b). Each Party shall at
its own cost, sign or use Commercially Reasonable Efforts to have signed all legal documents necessary to file and prosecute such patent applications or to obtain or maintain such patents. 

(c)    The Parties shall [**] incurred for the common activities for patent filing, prosecution and maintenance of Joint
Patent Rights and each Party shall be responsible for other costs for patent filing, prosecution and maintenance of Joint Patent Rights in its Territory (collectively, “Joint Patent Costs”). The Joint IP Prosecuting Party shall
invoice the other Party such Joint Patent Costs which shall be incurred by the other Party in accordance with this Section 12.4.3(c) within [**] after the Calendar Quarter in which such Joint Patent Costs were incurred and the other Party shall
pay such Joint Patent Costs within [**] after receipt of such invoice. 

  

					
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 (d)    Notwithstanding Section 12.4.3(c), if a Party does not wish to
bear Joint Patent Costs which shall be incurred by such Party with respect to a Joint Patent Right in any country(ies), such Party may, by providing [**] prior written notice to the other Party, terminate its obligation to pay such Joint Patent
Costs. Such Party shall promptly assign all of its right, title and interest in and to such Joint Patent Right in such country(ies) to the other Party upon such other Party’s written request. 

12.4.4    Cooperation. Each Party shall: (a) use Commercially
Reasonable Efforts to make its employees, agents and consultants reasonably available to the other Party (or to the other Party’s authorized attorneys, agents or representatives), to the extent reasonably necessary to enable such other Party to
undertake patent prosecution in accordance with this Agreement; and (b) provide the other Party with copies of all material correspondence pertaining to prosecution with the patent offices wherever applicable to Patent Rights licensed to such
other Party in such other Party’s Territory under this Agreement. 
 12.5    Enforcement. 

12.5.1    Notices. Each Party shall promptly report in writing to the other
Party any (a) known or suspected infringement (including any interference, opposition or invalidation proceedings) of any Karyopharm Technology, Antengene Technology or Joint IP or (b) unauthorized use or misappropriation of any
Confidential Information or Know-How of a Party, by a Third Party of which it becomes aware in its Territory, in each case to the extent such infringing, unauthorized or misappropriating activities involve, as
to a Licensed Product or a competing product in the Field (“Competitive Infringement”), and shall provide the other Party with all available evidence of such Competitive Infringement. 

12.5.2    Rights to Enforce.  

(a)    In the Karyopharm Territory; Antengene Technology.  

(i)    First Right. Karyopharm shall have the first right to initiate an infringement or other appropriate
suit or action in the Karyopharm Territory against any Third Party with respect to any Competitive Infringement in the Karyopharm Territory of any Antengene Technology with respect to a product competing with a Licensed Product in the Karyopharm
Territory. 
 (ii)    Step-In Right. If within [**] (or
such shorter period of time as required by applicable Law to avoid loss of material enforcement rights) after Karyopharm’s receipt of a notice from Antengene or notifying Antengene of a Competitive Infringement with respect to any Antengene
Technology, with respect to a product competing with a Licensed Product in the Karyopharm Territory, Karyopharm or its Third Party Licensee does not take any action as described in Section 12.5.2(a)(i) and permitted hereunder against such
Competitive Infringement in the Karyopharm Territory, Antengene may in its sole discretion (but not the obligation), bring and control any legal or other appropriate action in connection therewith at its sole expense. 

  

					
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 (b)    In the Antengene Territory; Antengene Technology.
 
 (i)    First Right. Antengene shall have the first right to initiate an infringement or other
appropriate suit or action in the Antengene Territory against any Third Party with respect to any Competitive Infringement in the Antengene Territory of any Antengene Technology with respect to a product competing with a Licensed Product in the
Antengene Territory.  
 (ii)    Step-In Right. If
within [**] (or such shorter period of time as required by applicable Law to avoid loss of material enforcement rights) after Antengene’s receipt of a notice from Karyopharm or notifying Karyopharm of a Competitive Infringement with respect to
any Antengene Technology, with respect to a product competing with a Licensed Product in the Antengene Territory, Antengene does not take any action as described in Section 12.5.2(b)(i) and permitted hereunder against such Competitive
Infringement in the Antengene Territory, Karyopharm may in its sole discretion (but not the obligation), bring and control any legal or other appropriate action in connection therewith at its sole expense. 

(c)    In the Antengene Territory; Karyopharm Technology.  

(i)    First Right. Karyopharm shall have the first right to initiate an infringement or other appropriate
suit or action in the Antengene Territory against any Third Party with respect to any Competitive Infringement in the Antengene Territory of any Karyopharm Technology with respect to a product competing with a Licensed Product in the Antengene
Territory.  
 (ii)    Step-In Right. If within
[**] (or such shorter period of time as required by applicable Law to avoid loss of material enforcement rights) after Karyopharm’s receipt of a notice from Antengene or notifying Antengene of a Competitive Infringement with respect to any
Karyopharm Technology, with respect to a product competing with a Licensed Product in the Antengene Territory, Karyopharm or its Third Party Licensee does not take any action as described in Section 12.5.2(c)(i) and permitted hereunder against
such Competitive Infringement in the Antengene Territory, Antengene may in its sole discretion (but not the obligation), bring and control any legal other appropriate action in connection therewith at its sole expense. 

(d)     Joint IP. In the case of any Competitive Infringement of any Joint IP, the Parties shall
promptly confer to consider such Competitive Infringement and the appropriate course of action in good faith. 

12.5.3    Procedures; Expenses and Recoveries. The Party having the right to
initiate any infringement suit or action (including any interference, opposition or invalidation proceedings; the same hereinafter) under Section 12.5.2 above (the “Initiating Party”) shall have the sole and exclusive right to
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for any such suit or action and shall pay all expenses of the suit or action, including attorneys’ fees and court costs and reimbursement of the other Party’s reasonable out-of-pocket expense in rendering assistance requested by the Initiating Party. Should Initiating Party initiate an infringement suit or action under Section 12.5.2,
Initiating Party agrees to discuss with the other Party ways to manage the potential risk to the other Party’s Patent Rights in connection with such suit or action, including limiting the number and scope of claims that are asserted in
connection with such suit or action. Initiating Party shall use good faith efforts to employ any reasonable measures agreed to by the Parties to manage such potential risk. If required under applicable Law in order for the Initiating Party to
initiate or maintain such suit, or if the Initiating Party is unable to initiate or prosecute such suit solely in its own name or it is otherwise advisable to obtain an effective legal remedy, the other Party shall join or participate in as a party
to the suit and shall execute and cause its Affiliates to execute all documents necessary for the Initiating Party to initiate suit to prosecute and maintain such suit. In addition, at the Initiating Party’s request, the other Party
shall provide reasonable assistance to the Initiating Party in connection with such an infringement suit at no charge to the Initiating Party except for reimbursement by the Initiating Party of reasonable out-of-pocket expenses incurred in rendering such assistance. The non-Initiating Party shall have the right to participate and be represented in any such suit by its own counsel at its own expense.
Neither Party shall enter into any settlement of any Competitive Infringement described in Section 12.5.2 that admits to the invalidity or unenforceability of the Karyopharm Patent Rights, Antengene Patent Rights and Joint Patent Rights,
incurs any financial or other liability on the part of the other Party or requires an admission of liability, wrongdoing or fault on the part of the other Party, in each case without the other Party’s prior written consent, not to be
unreasonably withheld, conditioned or delayed. If the Initiating Party obtains from a Third Party, in connection with such suit, any damages, license fees, royalties or other compensation (including any amount received in settlement of such suit),
such amounts shall be allocated in all cases as follows: 
 (a)    first, to reimburse each Party for all expenses of
the suit incurred by the Parties, including attorneys’ fees and disbursements, court costs and other litigation expenses (on a pro rata basis, based on each Party’s respective expenses, to the extent the recovery is less than all such
expenses); and 
 (b)    second, the remainder share be retained by the Initiating Party; provided that
in the case of Section 12.5.2 (c), despite of which Party is the Initiating Party, such remainder shall be retained by [**]. 

12.5.4    Karyopharm, at its sole expense, shall defend any proceedings seeking to invalidate or
hold the Karyopharm Patents or Joint IP unenforceable (each, an “Invalidation Action”), in each case in Karyopharm’s own name, if necessary for standing purposes, in the name of Antengene (or its designee) and shall consider, in good
faith, the comments of Antengene in so doing. Antengene, at its sole expense, shall defend any proceedings seeking to invalidate or hold the Antengene Patents in the Antengene Territory in each case in Antengene’s own name and shall consider,
in good faith, the comments of Karyopharm in so doing. 

  

					
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 12.6    Infringement of Third Party Patent Rights. 

12.6.1    If the Development, Manufacture, having Manufactured, use or Commercialization of any
Licensed Compound and/or Licensed Product in or outside the Antengene Territory pursuant to this Agreement results in a claim, suit or proceeding alleging patent infringement against Karyopharm and/or Antengene (or their respective Related Parties)
(collectively, “Infringement Actions”), the Party subject to such Infringement Actions (the “Subject Party”) shall promptly notify the other Party in writing and shall discuss with the other Party the strategy for
defending such Infringement Actions, but shall have the right to direct and control the defense thereof in its sole discretion and at its own expense, with counsel of its choice; provided that, the other Party may participate in the
defense and/or settlement thereof, at its own expense with counsel of its choice. In any event, the Subject Party agrees to keep the other Party hereto reasonably informed of all material developments in connection with any such Infringement Action.
Antengene agrees not to settle such Infringement Action, or make any admissions or assert any position in such Infringement Action, in a manner that would adversely affect the allegedly infringing Licensed Compound and/or Licensed Product or the
Development, Manufacture, having Manufactured, use or Commercialization of such Licensed Compound and/or Licensed Product in any country of the world, without the prior written consent of Karyopharm, which shall not be unreasonably withheld, delayed
or conditioned; and Karyopharm agrees not to settle such Infringement Action, or make any admissions or assert any position in such Infringement Action, in a manner that would adversely affect the allegedly infringing Licensed Compound and/or
Licensed Product, or the Development, Manufacture, having Manufactured, use or Commercialization of such Licensed Compound and/or Licensed Product, within the Antengene Territory, without the prior written consent of Antengene, which shall not be
unreasonably withheld, delayed or conditioned. Any damage and settlement arising from Infringement Actions, which is due to the Third Party by Antengene, will be credited against the royalties that are due from Antengene to Karyopharm, provided that
such credit shall be [**] percent ([**]%) of the payment made by Antengene to such Third Party and in no Calendar Quarter shall the royalties owed to Karyopharm by Antengene be reduced by more than [**] percent ([**]%). 

12.7    Registration of License. 

12.7.1     By Antengene. Antengene may register, in its discretion and at its expense,
the licenses granted to Antengene under this Agreement with the Chinese Patent Office or any other appropriate Governmental Authority in any country of the Antengene Territory; provided that the Parties agree that such registration is
not intended to affect the allocation of prosecution and enforcement rights and obligations set forth in Article 12. If Antengene determines to make any such registrations: (a) Karyopharm agrees, at Antengene’s expense, to promptly take
such actions and execute such documents as are reasonably requested by Antengene in order to effect such registration(s) in the applicable country; and (b) in the event the licenses granted to Antengene under this Agreement expire or are
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documents as are reasonably necessary and requested by Karyopharm to cancel such registration(s) in the applicable country with respect to the expired, terminated or revised license grant(s).

 12.7.2     By Karyopharm. Karyopharm may register, in its discretion and at its
expense, the licenses granted to Karyopharm under this Agreement with any appropriate Governmental Authority in any country of the Karyopharm Territory; provided that the Parties agree that such registration is not intended to affect
the allocation of prosecution and enforcement rights and obligations set forth in Article 12. If Karyopharm determines to make any such registrations: (a) Antengene agrees, at Karyopharm’s expense, to promptly take such actions and execute
such documents as are reasonably requested by Karyopharm in order to effect such registration(s) in the applicable country; and (b) in the event the licenses granted to Karyopharm under this Agreement expire or are terminated, Karyopharm shall
promptly take such actions and execute such documents as are reasonably necessary and requested by Antengene to cancel such registration(s) in the applicable country with respect to the expired or terminated license grant(s). 

12.8    Patent Term Extensions. 

12.8.1    Karyopharm shall reasonably cooperate with Antengene to determine a mutually agreeable
strategy to seek supplemental protection certificates (“SPC”), patent term extensions and restorations for Karyopharm Patent Rights, Antengene Patent Rights or Joint Patent Rights in the Field in the Antengene Territory, which may
include seeking SPCs, extensions and restorations for Karyopharm Patent Rights, Antengene Patent Rights or Joint Patent Rights in the Antengene Territory, and the Parties, subject to the provisions of any Karyopharm Third Party Agreement, shall seek
SPCs, extensions and restorations for the Karyopharm Patent Rights, Antengene Patent Rights or Joint Patent Rights in the Antengene Territory in accordance with that strategy. Where required under national Law, Karyopharm shall make the filings for
such SPCs, extensions and restorations for Karyopharm Patent Rights, Antengene Patent Rights or Joint Patent Rights in the Antengene Territory in accordance with this Section 12.8.1. Each Party shall execute such authorizations and other
documents and take such other actions as may be reasonably requested by the other Party to obtain any such SPCs, extensions and restorations for Karyopharm Patent Rights, Antengene Patent Rights or Joint Patent Rights in the Antengene Territory.

 12.8.2    Antengene shall reasonably cooperate with Karyopharm to determine a mutually
agreeable strategy to seek SPCs, patent term extensions and restorations for Antengene Patent Rights or Joint Patent Rights in the Field in the Karyopharm Territory, which may include seeking SPCs, extensions and restorations for Antengene Patent
Rights or Joint Patent Rights in the Karyopharm Territory, and the Parties shall seek SPCs, extensions and restorations for the Antengene Patent Rights or Joint Patent Rights in the Karyopharm Territory in accordance with that strategy. Where
required under national Law, Antengene shall make the filings for such SPCs, extensions and restorations for Antengene Patent Rights or Joint Patent 

  

					
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Rights in the Karyopharm Territory in accordance with this Section 12.8.2. Each Party shall execute such authorizations and other documents and take such other actions as may be reasonably
requested by the other Party to obtain any such SPCs, extensions and restorations for Antengene Patent Rights or Joint Patent Rights in the Karyopharm Territory. 

12.9    Brand Name. Subject to applicable regulatory approval, Antengene shall have the right to use
the brand names chosen by Karyopharm for the applicable Licensed Product. For clarity, Antengene can independently determine brand names for the applicable Licensed Product, at its full discretion. 

 

	13.	TERM AND TERMINATION 

 13.1    Term. This
Agreement shall be effective as of the Effective Date and, unless terminated earlier, this Agreement shall continue in effect on a Licensed Product-by-Licensed Product
and country-by-country basis until expiration of the last Royalty Term to expire under this Agreement (“Term”). Upon expiration of this Agreement on a
Licensed Product-by-Licensed Product and country-by-country basis, Antengene’s
license pursuant to Section 7.1.1 shall become a fully paid-up, irrevocable, perpetual license, sublicensable without restriction on a Licensed Product-by-Licensed Product and country-by-country basis. 

13.2    Termination by Antengene. 

13.2.1    Termination without Cause. At any time, Antengene shall have the right to
terminate this Agreement, on a Licensed Product-by-Licensed Product and
country-by-country basis, upon one hundred and eighty (180) days advance written notice to Karyopharm. 

13.2.2    Termination for Safety or Efficacy Reason. Antengene shall have the
right to terminate this Agreement, on a Licensed Product-by-Licensed Product basis, for safety or efficacy reasons upon thirty (30) days written notice to
Karyopharm or within a shorter period if required under applicable Law. 
 13.3    Termination by Either
Party. 
 13.3.1    Termination for Cause.
This Agreement may be terminated at any time during the Term on a Licensed Product-by-Licensed Product and country-by-country basis upon written notice by either Party if the other Party is in material breach of its obligations hereunder and has not cured such breach within [**] in the case of a payment breach, or
within [**] in the case of all other breaches, after notice requesting cure of the breach. 

13.3.2    Termination Upon Bankruptcy. Either Party may immediately terminate this
Agreement if, at any time, the other Party becomes insolvent or an order is made or a resolution passed for the administration, winding-up or dissolution of such other Party (other than for the purposes of a
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liquidator, administrator, trustee or similar officer is appointed over all or any substantial part of the assets of such other Party or such other Party enters into or proposes any composition
or arrangement with its creditors generally or anything analogous to the foregoing occurs in any applicable jurisdiction. 

13.4    Effect of Termination.  

13.4.1    Termination by Antengene Under
Section 13.3. Without limiting any other legal or equitable remedies that either Party may have, if this Agreement is terminated by Antengene pursuant to Section 13.3, then the provisions of
Section 13.4.1(a)-(b) shall apply: 
 (a)    the license grants to Antengene shall terminate; 

(b)    Karyopharm shall pay Antengene a royalty of one-half of royalty rate (as
set forth in Section 8.4.1) of net sales (with the same meaning as “Net Sales”, mutatis mutandis) of Licensed Product by Karyopharm or its Related Parties in the Antengene Territory if termination occurs prior to First Commercial Sale
of such Licensed Product and Karyopharm shall pay Antengene a royalty of [**] of royalty rate (as set forth in Section 8.4.1) of net sales plus [**] percent ([**]%) of Licensed Product by Karyopharm or its Related Parties in the Antengene
Territory if termination takes place after First Commercial Sale of such Licensed Product, and the provisions of Sections 8.4.2 through 8.11 and the defined terms therein shall apply, mutatis mutandis, with the references to “Karyopharm”
and “Antengene” switched; 
 (c)    To the extent permitted by applicable law, the license grants to
Karyopharm in Section 7.1.2 shall become a non-transferable (except as provided in Section 14.1), sublicenseable (including through multiple tiers) (subject to Section 7.2), non-exclusive, royalty-bearing license, and shall be expanded to include the Antengene Territory. 

13.4.2    Termination by Karyopharm Under Section 13.3;
Termination by Antengene Under Section 13.2 or Termination Upon Mutual Written Agreement of the Parties. Without limiting any other legal or equitable remedies that either Party may have, if this Agreement is
terminated by Karyopharm pursuant to Section 13.3, or by Antengene pursuant to Section 13.2, or upon the mutual written agreement of the Parties, then the provisions of Section 13.4.2(a)-(k) shall apply: 

(a)    Upon termination notice from terminating Party to the other Party or mutual agreement for termination, as
applicable, Antengene shall responsibly wind-down any on-going Development, Manufacture, having Manufactured, use or Commercialization of the Licensed Compound or the Licensed Product. Antengene shall be
responsible for [**]; 
 (b)    the license grants to Antengene shall terminate, and the license grants to Karyopharm
in Section 7.1.2 (i) specific to the Licensed Compound or Licensed Product shall survive on a perpetual and irrevocable basis and (ii) not specific to the Licensed Compound or Licensed Product shall become a
non-transferable (except as provided in Section 14.1), sublicenseable (including through multiple tiers) (subject to Section 7.2), non-exclusive,
royalty-bearing license, and each license for (i) and (ii) shall be expanded to include the Antengene Territory;  

  

					
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 (c)    Antengene shall provide to Karyopharm a fair and accurate description
of the status of the Development, Manufacture, use and Commercialization of the Licensed Product in the Field in the Antengene Territory as of the effective date of termination; 

(d)    Antengene shall as promptly as practicable transfer to Karyopharm or Karyopharm’s designee, to the extent
practicable and necessary for Karyopharm or its Related Parties to Develop, Manufacture, have Manufactured, use or Commercialize the Licensed Compound and Licensed Product in the Antengene Territory, (i) possession and ownership of all filings
and approvals (including all INDs, NDAs, Regulatory Approvals and pricing and reimbursement approvals) relating to the Development, Manufacture, use or Commercialization of the Licensed Product, (ii) copies of data, reports, records and
materials, and other sales and marketing related information Controlled by Antengene, including non-clinical and Clinical Data relating to the Licensed Product and all adverse event data Controlled by
Antengene; provided that Antengene shall use Commercially Reasonable Efforts to obtain for Karyopharm the right to access such data, reports, records, materials, and other sales and marketing related information, and (iii) records
and materials in Antengene’s possession containing Confidential Information of Karyopharm requested to be transferred by Karyopharm. Antengene shall be responsible for any costs associated with obligations under this Section 13.4.2(d),
only if this Agreement is terminated by Karyopharm pursuant to Section 13.3; 
 (e)    if the effective date of
termination is after the First Commercial Sale of the Licensed Product in any country in the Antengene Territory, then, subject to Karyopharm’s election and subject to applicable Laws, Antengene shall (i) appoint Karyopharm’s designee
as its exclusive distributor of the Licensed Product in the Antengene Territory and grant Karyopharm the right to appoint sub-distributors, or (ii) continue to distribute the Licensed Product in the
Antengene Territory, until such time as all Regulatory Approvals in the Antengene Territory have been transferred to Karyopharm or its designee, and in the case of (ii), the license granted to Antengene under Section 7.1.1 shall survive to the
extent necessary to perform Antengene’s obligation under this Section 13.4.2 (e); 
 (f)    if Antengene or
its Related Parties are Manufacturing the Licensed Product, then, except for the termination pursuant to Section 13.2.2, at Karyopharm’s option, Antengene shall supply the Licensed Product to Karyopharm in the Antengene Territory at (A)
[**]; or (B) [**], in each case (A) or (B) plus [**] percent ([**]%) thereof, until the earlier of (i) such time as all Regulatory Approvals in the Antengene Territory have been transferred to Karyopharm or its designee, Karyopharm has
obtained all necessary manufacturing approvals and Karyopharm has procured or developed its own source of the Licensed Product supply for the Antengene Territory or (ii) [**] following the effective date of such termination; 

(g)    if Karyopharm so requests, and to the extent permitted under Antengene’s or any of its Affiliates’
obligations to Third Parties at the time of termination, Antengene shall use Commercially Reasonable Efforts to transfer to Karyopharm any Third Party agreements relating solely and exclusively to the Development, Manufacture or Commercialization of
the Licensed Product to which Antengene or any of its Affiliates is a party, subject to any required consents of such Third Party; 

  

					
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 (h)    Antengene shall promptly transfer and assign to Karyopharm all of
[**] used in Commercialization of the Licensed Product (but not any Antengene house marks or any trademark containing the word “Antengene” owned by Antengene). Antengene shall be responsible for any costs associated with obligations under
this Section 13.4.2(h), only if this Agreement is terminated by Karyopharm pursuant to Section 13.3; 

(i)    Antengene shall, upon Karyopharm’s written request, transfer to Karyopharm any inventory of Licensed
Compounds and Licensed Products owned or controlled by Antengene or its Affiliates as of the termination date at the (i) [**] for such Licensed Products or (ii) [**] for such supply, in each case (A) or (B) plus [**] percent ([**]%) thereof, as
applicable; 
 (j)    Antengene shall provide any other assistance reasonably requested by Karyopharm for the purpose
of allowing Karyopharm or its designee to proceed expeditiously with the Development, Manufacture, use and Commercialization of Licensed Compounds and Licensed Products in or for the Antengene Territory for [**] from the effective date of
termination of this Agreement; and 
 (k)    Antengene shall execute all documents and take all such further actions as
may be reasonably requested by Karyopharm in order to give effect to the foregoing clauses. 

13.4.3    Bankruptcy. All rights and licenses granted under or pursuant to this
Agreement by a Party to the other Party, including those set forth in Section 7.1, are and shall otherwise be deemed to be, for purposes of Section 365(n) of the U.S. Bankruptcy Code, licenses of right to “intellectual property”
as defined under Section 101 of the U.S. Bankruptcy Code. The Parties agree that the Parties and their respective permitted Sublicensees or sublicensees, as Sublicensees or sublicensees of such rights under this Agreement, shall retain and may
fully exercise all of their rights and elections under the U.S. Bankruptcy Code and any foreign counterpart thereto. 

13.4.4    For clarity, the termination for one Licensed Product in one country shall not affect the
other Licensed Product nor the same Licensed Product in other countries. 
 13.5    Effect of Expiration or
Termination; Survival. Any expiration or termination of this Agreement shall be without prejudice to the rights of either Party against the other accrued or accruing under this Agreement prior to expiration or termination, including Articles
1, Article 8 (subject to Section 13.4.1(b), with respect to milestone payments and royalty payments accruing prior to, but not yet paid, as of the effective date of termination), 11, and 14 and Sections 4.5, 7.3, 8.6, 8.7, 9.1, 9.2 (to the
extent Confidential Information is included in a proposed disclosure), 10.5, 12.6, 12.7, 13.1, 13.4, 12.4.3, 12.4.4, and 13.5 which shall survive any expiration or termination of this Agreement. Except as otherwise set forth in this Article
13, upon termination or expiration of this Agreement all rights and obligations of the Parties under this Agreement will cease. 

  

					
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	14.	MISCELLANEOUS 

 14.1    Assignment /
Change in Control. This Agreement may not be assigned or otherwise transferred, nor may any right or obligation hereunder be assigned or transferred, by either Party without the written consent of the other Party; provided,
however, that either Party may, without the other Party’s written consent, assign this Agreement and its rights and obligations hereunder in whole or in part to (a) an Affiliate; or (b) the relevant Person in the context of a
Change in Control. Each Party agrees that, notwithstanding any provisions of this Agreement to the contrary, no Patent Right, Know-How or other intellectual property or other proprietary rights not Controlled
by a Party prior to a Change in Control with respect to such Party or by any of its Affiliates who were its Affiliates prior to such Change in Control (such Party’s “Pre-Existing
Affiliates”), or which first becomes Controlled by such Party’s Pre-Existing Affiliates following such Party’s Change in Control, will be deemed Controlled by such Party or its Affiliates
for purposes of this Agreement after such Change in Control, other than any Patent Right that claims priority, directly or indirectly, to any other Patent Right first Controlled by such Party or its
Pre-Existing Affiliates before such Change in Control and licensed to the other Party hereunder as of such Change in Control, which will be deemed Controlled by such Party or its
Pre-Existing Affiliates thereafter no matter when such Patent Right is filed or issued. Any purported assignment in violation of this Section 14.1 shall be void. For purposes of this Section 14.1,
“Change in Control” means, with respect to a Party (a) the acquisition of beneficial ownership, directly or indirectly, by any Third Party of securities or other voting interest of such Party representing a
majority or more of the combined voting power of such Party’s then outstanding securities or other voting interests, (b) any merger, reorganization, consolidation or business combination involving such Party with a Third Party that results
in the holders of beneficial ownership (other than by virtue of obtaining irrevocable proxies) of the voting securities or other voting interests of such Party (or, if applicable, the ultimate parent of such Party) immediately prior to such merger,
reorganization, consolidation or business combination ceasing to hold beneficial ownership of more than (50%) of the combined voting power of the surviving entity immediately after such merger, reorganization, consolidation or business combination,
or (c) any sale, lease, exchange, contribution or other transfer (in one transaction or a series of related transactions) of all or substantially all of the assets of such Party to which this Agreement relates to a Third Party, other than a
sale or disposition of such assets to an Affiliate of such Party. 
 14.2    Governing Law. This
Agreement shall be construed and the respective rights or obligations of the Parties determined in accordance with the substantive Law of the State of New York, other than (a) its conflicts of laws principles; (b) the United Nations
Convention on Contracts for the International Sale of Goods; (c) the 1974 Convention on the Limitation Period in the International Sale of Goods (the “1974 Convention”); and (d) the Protocol amending the 1974 Convention,
done at Vienna April 11, 1980; provided, that with respect to matters involving enforcement of intellectual property rights, the Law of the applicable country shall apply. 

  

					
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 14.3    Arbitration. 

14.3.1    Subject to Section 14.3.4, any disputes, claims or controversies in connection with
this Agreement, including any questions regarding its formation, existence, validity, enforceability, performance, interpretation, tort, breach or termination hereof (“Disputes”), shall be resolved amicably by negotiation between
the Parties. Either Party may initiate such informal Dispute resolution by sending written notice of the Dispute to the other Party, and then appropriate representatives of the Parties shall meet for attempted resolution by good faith negotiations
in person or via video-conference without delay from such notice. If such representatives are unable to resolve such Disputes within [**] of such notice, either Party may refer the matter by written notice to the Executive Officers for discussion
and resolution. If such Executive Officers are unable to resolve such Dispute within [**] of such written notice, Section 14.3.2 shall apply. 

14.3.2    All Disputes which remain unresolved under Section 14.3.1shall be finally resolved
under the Rules of Singapore International Arbitration Centre by three (3) arbitrators appointed in accordance with the said rules. Each Party shall nominate one (1) arbitrator, and the two (2) arbitrators so nominated shall nominate
a third arbitrator, who shall act as the chairperson. The place of the arbitration shall be Singapore. The language of the arbitration shall be English. If the tribunal orders production of documents, the tribunal shall take guidance from the
Singapore International Arbitration Centre Rules on the Taking of Evidence in International Arbitration as current on the date of the commencement of the arbitration. The costs and expenses of translation of relevant documents and translators
relating to the arbitration shall be deemed as the costs and expenses of the arbitration, and may be allocated to any Party in the award by the tribunal. The tribunal may include in its award an allocation to any Party of costs and expenses relating
to the arbitration, excluding lawyers’ fee, as the tribunal deems reasonable. Each Party shall bear its own cost and expenses for its own lawyers. The award rendered by the tribunal shall be final and binding upon the Parties and may be entered
in any court of appropriate jurisdiction. The Emergency Arbitrator Provisions and the Expedited Procedure Provisions shall not apply. 

14.3.3    The existence and content of the arbitral proceedings, any information exchanged between
Parties during the arbitral proceedings and any rulings or award shall be kept confidential by the Parties and members of the tribunal except (a) to the extent that disclosure may be required by a Party to fulfill a legal duty, protect or
pursue a legal right, or enforce or challenge an award in bona fide legal proceedings before a court or other judicial authority, (b) with the consent of both Parties, (c) where needed for the preparation or presentation of a claim or
defense in this arbitration, (d) where such information is already in the public domain other than as a result of a breach of this clause, or (e) by order of the tribunal upon application of a Party. 

14.3.4    At any time, a Party may seek or obtain preliminary, interim or conservatory measures from
the arbitrators or from a court. 

  

					
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 14.3.5    Unless otherwise agreed by the Parties, a
dispute between the Parties relating to the validity or enforceability of any Patent Right regarding this Agreement shall not be subject to arbitration and shall be submitted to a court or patent office of competent jurisdiction in the relevant
country in which such patent was issued or, if not issued, in which the underlying patent application was filed. The Parties submit to the jurisdiction of such court or patent office and irrevocably waive any assertion that the case should be heard
in a different venue or forum. 
 14.4    Entire Agreement; Amendments. This Agreement
contains the entire understanding of the Parties with respect to the subject matter hereof, and supersedes all previous arrangements with respect to the subject matter hereof, whether written or oral, including the Prior CDA. This Agreement
(including the Schedules hereto) may be amended, or any term hereof modified, only by a written instrument duly-executed by authorized representatives of both Parties. 

14.5    Severability. If any provision hereof should be held invalid, illegal or unenforceable
in any respect in any jurisdiction, the Parties shall substitute, by mutual consent, valid, legal and enforceable provisions for such invalid, illegal or unenforceable provisions, which valid, legal and enforceable provisions in their economic
effect are sufficiently similar to the invalid, illegal or unenforceable provisions that it can be reasonably assumed that the Parties would have entered into this Agreement with such valid, legal and enforceable provisions. In case
such valid, legal and enforceable provisions cannot be agreed upon, the invalid, illegal or unenforceable of one or several provisions of this Agreement shall not affect the validity of this Agreement as a whole. 

14.6    Headings. The captions to the Articles and Sections hereof are not a part of this Agreement
and shall not affect in any way the meaning or interpretation of this Agreement, but are merely for convenience to assist in locating and reading the several Articles and Sections hereof. 

14.7    Waiver of Rule of Construction. Each Party has had the opportunity to consult with counsel in
connection with the review, drafting and negotiation of this Agreement. Accordingly, the rule of construction that any ambiguity in this Agreement shall be construed against the drafting Party shall not apply. 

14.8    Interpretation. Except where the context expressly requires otherwise, (a) the
use of any gender herein shall be deemed to encompass references to any other gender, and the use of the singular shall be deemed to include the plural (and vice versa); (b) the words “include”, “includes” and
“including” shall be deemed to be followed by the phrase “without limitation” and shall not be interpreted to limit the provision to which it relates; (c) the word “will” shall be construed to have the same meaning
and effect as the word “shall”; (d) any definition of or reference to any agreement, instrument or other document herein shall be construed as referring to such agreement, instrument or other document as from time to time amended,
supplemented or otherwise modified (subject to any restrictions on such amendments, supplements or modifications set forth herein); (e) any reference herein to any Person shall be construed to include the Person’s successors and assigns
(subject to Section 14.1 with respect to a Party); (f) the words “herein”, “hereof” and “hereunder”, and words of similar import, shall be construed to refer to this Agreement in its entirety and not to any
particular provision hereof; (g) all references herein to 

  

					
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Articles, Sections, Exhibits or Schedules shall be construed to refer to Articles, Sections, Exhibits or Schedules of this Agreement, and references to this Agreement include all Exhibits and
Schedules hereto; (h) the word “notice” means notice in writing (whether or not specifically stated) and shall include notices, consents, approvals and other written communications contemplated under this Agreement;
(i) provisions that require that a Party, the Parties or any committee hereunder “agree,” “consent” or “approve” or the like shall require that such agreement, consent or approval be specific and in writing,
whether by written agreement, letter, approved minutes or otherwise (but excluding e-mail and instant messaging); (j) references to any specific Law, or article, section or other division thereof, shall be
deemed to include the then-current amendments thereto or any replacement or successor Law; (k) the term “or” shall be interpreted in the inclusive sense commonly associated with the term “and/or”; (l) references to
“$” or “dollars” shall mean U.S. Dollars; and (m) references to “day” shall mean a calendar day unless “Business Day” is specified. 

14.9    No Implied Waivers; Rights Cumulative. Neither Party shall be deemed to have waived any of
its right, power, remedy or privilege under this Agreement, or provided by statute or at law or in equity or otherwise unless the waiver is made in writing, signed by a duly authorized representative of that Party. No failure on the part of
Karyopharm or Antengene to exercise, and no delay in exercising, any right, power, remedy or privilege under this Agreement, or provided by statute or at law or in equity or otherwise, shall impair, prejudice or constitute a waiver of any such
right, power, remedy or privilege or be construed as a waiver of any breach of this Agreement or as an acquiescence therein, nor shall any single or partial exercise of any such right, power, remedy or privilege preclude any other or further
exercise thereof or the exercise of any other right, power, remedy or privilege. 

14.10    Notices. All notices which are required or permitted hereunder shall be in writing and
sufficient if delivered personally, sent by facsimile (and promptly confirmed by personal delivery, registered or certified mail or overnight courier), sent by internationally-recognized overnight courier or sent by registered or certified mail,
postage prepaid, return receipt requested, addressed as follows: 
  

			
	If to Karyopharm, to:	  	 Karyopharm Therapeutics Inc.

Attention: Chief Executive Officer

85 Wells Avenue, Suite 210

Newton, MA 02459 USA

Facsimile No.: [**]

		
	With a copy to:	  	 Karyopharm Therapeutics Inc.
 Attention: General
Counsel
 85 Wells Avenue, Suite 210
 Newton, MA 02459 USA

Facsimile No.: [**]

		
	With a copy to:	  	 WilmerHale LLP

60 State Street [**]Boston, MA 02109 USA

Attention: Steven D. Singer, Esq.
 Facsimile No.: 1-(617) 526-5000

  

					
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	If to Antengene, to:	  	 Antengene Corporation Co., Ltd.
 Attention:
Chief Executive Officer
 Suite 704, West Zhongshan Road 999

Shanghai, China 200051
 Facsimile No.: [**]

		
	With a copy to:	  	 Antengene Corporation Co., Ltd.
 Attention:
Senior Director, Business Operations
 Suite 704, West Zhongshan Road 999

Shanghai, China 200051
 Facsimile No.: [**]

		
	With a copy to:	  	 Junhe LLP
 Attention: James Zhu

26/F, HKRI Centre One, HKRI Taikoo Hui, 288 Shimen Road (No.1),

Shanghai, China 200041
 Facsimile No.: [**]

 or to such other address as the Party to whom notice is to be given may have furnished to the other Party in writing in
accordance herewith. Any such notice shall be deemed to have been given: (a) when delivered if personally delivered or sent by facsimile on a business day (or if delivered or sent on a non-business day,
then on the next business day); (b) on receipt if sent by overnight courier; or (c) on receipt if sent by mail. 
 Notwithstanding any provision of
this Section 14.10, it is understood and agreed between the Parties that this Section 14.10 is not intended to govern the day-to-day communications necessary
between the Parties in performing their duties, in due course, under the terms and conditions hereof. 

14.11    Compliance with Law. Each Party and its Affiliates shall conduct, and shall use
Commercially Reasonable Efforts to cause its Related Parties, contractors and consultants to conduct, all of its activities contemplated under this Agreement in accordance with all applicable Laws of the country in which such activities are
conducted, as well as the US Foreign Corrupt Practices Act, and all export control and sanctions Law of the United States. In addition, each Party shall not, shall ensure that its Affiliates do not, and shall use Commercially Reasonable Efforts to
cause its Related Parties, contractors and consultants not to, take any action that would cause the other Party to violate any applicable anti-corruption or sanctions Laws. 

14.12    Force Majeure. Neither Party shall be held liable to the other Party nor be deemed to have
defaulted under or breached this Agreement for failure or delay in performing any obligation under this Agreement to the extent that such failure or delay is caused by or results from causes beyond the reasonable control of the affected Party,
potentially including embargoes, war, acts of war (whether war be declared or not), insurrections, riots, civil commotions, strikes, lockouts or other labor disturbances, fire, floods, earthquake, tsunami or other acts of God. The

  

					
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affected Party shall notify the other Party of such force majeure circumstances as soon as reasonably practical, and shall promptly undertake all reasonable efforts necessary to cure such force
majeure circumstances. 
 14.13    Independent Contractors. It is expressly agreed that
Karyopharm and Antengene shall be independent contractors and that the relationship between Karyopharm and Antengene shall not constitute a partnership, joint venture or agency. Karyopharm shall not have the authority to make any statements,
representations or commitments of any kind, or to take any action, which shall be binding on Antengene, without the prior written consent of Antengene, and Antengene shall not have the authority to make any statements, representations or commitments
of any kind, or to take any action, which shall be binding on Karyopharm without the prior written consent of Karyopharm. 

14.14    Counterparts. This Agreement may be executed in two (2) or more counterparts,
including by facsimile or PDF signature pages, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. 

14.15    Binding Effect; No Third Party Beneficiaries. As of the Effective Date, this
Agreement shall be binding upon and inure to the benefit of the Parties and their respective permitted successors and permitted assigns. Except as expressly set forth in this Agreement, no Person other than the Parties and their respective
Affiliates and permitted successors and assignees hereunder shall be deemed an intended beneficiary hereunder or have any right to enforce any obligation of this Agreement. 

[REMAINDER OF PAGE LEFT INTENTIONALLY BLANK] 

  

					
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 IN WITNESS WHEREOF, the Parties have executed this Agreement as of the Effective Date. 

 

									
	 ANTENGENE THERAPEUTICS

LIMITED
	 		 	KARYOPHARM THERAPEUTICS INC.
					
	BY:	 	 /s/ Jay Mei
	 		 	BY:	 	 /s/ Christopher B.Primiano

	NAME:	 	Jay Mei, MD, PhD	 	            	 	NAME:	 	Christopher B. Primiano
	TITLE:	 	Chief Executive Officer	 		 	TITLE: EVP, Chief Business Officer & General Counsel

  

					
		 	Signature page to License Agreement	  	
			
	Confidential	 		  	

 SCHEDULE 1.28 

Amyotrophic Lateral Sclerosis, Traumatic Brain Injury, Multiple Sclerosis, Huntington’s    Disease, Epilepsy, Duchenne Muscular
Dystrophy, Alzheimer’s Disease, Parkinson’s Disease and Stroke 

  
 Confidential 

 SCHEDULE 1.49 

KARYOPHARM THIRD PARTY AGREEMENTS 
 [**]

 Research Agreement, made as of the 18th day of July, 2011, by and between The Multiple Myeloma
Research Foundation, Inc. and Karyopharm1 
  

 

	1	[**] 

  

					
		 		  	
			
	 Confidential
	 		  	

 SCHEDULE 1.52 

KPT-8602 - ELTANEXOR 

  

					
		 		  	
			
	Confidential	 		  	

	1.	PHYSICAL, CHEMICAL, AND PHARMACEUTICAL PROPERTIES AND FORMULATIONS 

  

	1.1.	Physical Properties 

 White to off-white solid, Melting point:
225 °C 
  

	1.2.	Chemical Properties 

  

	1.2.1.	Chemical Name 

 (E)-3-(3-(3,5-bis(trifluoromethyl)phenyl)-1H-1,2,4-triazol-1-yl)-2-(pyrimidin-5-yl)acrylamide
 
  

	1.2.2.	Structural Formula 

  
 

 
  

	1.2.3.	Molecular Formula 

 C17H10F6N6O 
  

	1.2.4.	Molecular Weight 

 428.30 g/mol 

 

	1.3.	Solubility 

 < [**] mg/mL in water; 3 [**]
mg/mL in dimethylsulfoxide (DMSO); < [**] mg/mL in methanol 
  

	1.4.	Formulations 

 The clinical dosage form for KPT-8602 is an [**]
for oral administration. Initial supplies came in two strengths of active ingredient: 5 mg and 20 mg of the active pharmaceutical ingredient per tablet. Additional supplies for the clinic included the addition of a 10 mg tablet based on
the 5 mg formulation and are size proportional (2x) to the 5 mg tablet. All inactive ingredients used in the tablets are either compendia or generally recognized as safe. Tablets are film coated for ease in handling. 

 

	1.5.	Storage Conditions 

 KPT-8602 tablets are packaged in [**] with
an [**] and can be stored at room temperature between 5 and 25oC. Instructions for the receipt, inspection, storage, preparation, administration, and disposal of
KPT-8602 tablets are provided in the Pharmacy Manual at each clinical site. 

  

					
		 		  	
			
	 Confidential
	 		  	

 SCHEDULE 1.53 

KPT-9274 

  
 Confidential 

 PHYSICAL, CHEMICAL, AND PHARMACEUTICAL PROPERTIES AND FORMULATIONS 

Drug Substance Description 
  

			
	Company Code:	  	KPT-9274
		
	Chemical Name:	  	(E)-3-(6-aminopyridin-3-yl)-
N-((5-(4-(4,4-difluoropiperidine-1-carbonyl)phenyl)-7-(4-fluorophenyl)benzofuran-2-yl)methyl)acrylamide

		
	Molecular Formula:	  	C35H29F3N4O
3
		
	Molecular Weight:	  	610.64 g/mol
		
	Physical Description:	  	White to pale yellow to beige solid, Melting point: 230 °C
		
	Solubility:	  	<[**] mg/mL in water; 3[**] mg/mL in dimethylsulfoxide; 3[**] mg/mL in 10% aqueous acetone

 Structural Formula KPT-9274 

 
 

 
 Formulations 

The dosage form for KPT-9274 is an [**] for oral administration (2 strengths of active ingredient are used: 5 mg and 20
mg of active per tablet). The 5 mg tablet is bisected or scored. Inactive ingredients used in the tablets are either compendial or generally recognized as safe. In the case of a dose below 5 mg is required, the scored 5 mg tablet are to be split to
enable 2.5 mg dosing. 
 Storage Conditions 

KPT-9274 tablets are stored at or below 25 °C (77 °F) in [**] bottles with an [**]. Room temperature storage is
preferred. Tablets should not be frozen. Instructions for the receipt, inspection, storage, preparation, administration, and disposal of KPT-9274 tablets are provided in the Pharmacy Manual at each clinical
site. 
 Stability Data 
 The KPT-9274 drug product manufactured according to current Good Manufacturing Practices are placed on a stability program according to International Council on Harmonisation (ICH) conditions. 

  

					
		 		  	
			
	 Confidential
	 		  	

 SCHEDULE 1.75 

KPT-330 – SELINEXOR 

  
 Confidential 

 PHYSICAL, CHEMICAL, AND PHARMACEUTICAL PROPERTIES AND FORMULATIONS 

Drug Substance Description 
  

			
	Product Name:	  	Selinexor (International Nonproprietary Name [INN])
		
		  	Selinexor (United States Adopted Name [USAN])
		
	Company Code:	  	KPT-330
		
	Chemical Name:	  	(Z)-3-(3-(3,5-bis(trifluoromethyl)phenyl)-1H-1,2,4-triazol-1-yl)-N’-(pyrazin-2-yl)acrylohydrazide
		
	Molecular Formula:	  	C17H11F6N7O

		
	Molecular Weight:	  	443.31 g/mol
		
	Pharmacologic Class:	  	Apoptosis inducing agent (Wu, 2006)

 Chemical Structure of Selinexor 
  

 
 Drug Product Formulation 

The selinexor dosage forms used in clinical studies are capsules and tablets for oral administration. Capsule strengths for selinexor were 1 mg, 5 mg and 20
mg; tablet strengths are 10 mg and 25 mg (supplied in bottles), and 20 mg tablets (supplied in blister packs). 
 Capsules of selinexor for oral
administration are filled with a micronized mixture containing about [**]% by weight of the active pharmaceutical ingredient (API) (selinexor), and an approximately [**] mixture of [**] (the manufacturing procedure involves [**] of the active
pharmaceutical ingredient and [**]). The capsules were used in early phase 1 studies but are no longer manufactured or used. 
 Selinexor 10 and 25 mg
tablets (tablet formulation #1) were manufactured via [**] and contain approximately [**]% by weight of the API as well as, [**]. Additional inactive excipients include [**]). The tablets are coated with [**]. These tablet components/excipients are
common to oral pharmaceuticals and/or compendial. Tablet formulation #1 (1st generation tablets) has been evaluated in a Phase 1b comparative bioavailability study
KCP-330-003 and demonstrated similar exposure to the capsules. Tablet strengths are distinguished by tablet size and debossing (K10, K20 and K25 for 10 mg,
20 mg, and 25 mg tablets respectively). 

  

					
		 		  	
			
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 Selinexor 20 mg tablets (tablet formulation #2) were manufactured via [**]) and contain [**]% by weight of the
API as well as [**] (lubricant). Additional inactive excipients include [**] are blended with the [**], and [**]. The [**] to provide product formulation. Tablet formulation #2 (2nd generation
tablets) has been evaluated in a Phase 1b comparative bioavailability study KCP-330-003 and demonstrated similar exposure to tablet formulation #1. 

Twenty (20) milligram tablets (tablet formulation #2) are the preferred dosage form for current and future clinical trials. The use of the 20 mg tablets
in CSTs began in December, 2014. 
 Storage and Handling 

All selinexor formulations can be stored or shipped either at ambient temperature or refrigerated. Selinexor tablets (20 mg) are to be stored at room
temperature (at or below 30°C) in clear blister strips that are composed of either [**] with a [**] or [**] with a [**]. The blistered packaged product will be placed in paperboard secondary packaging, to which labeling materials will be fixed.

  

					
			
	 Confidential
	 		  	

 SCHEDULE 1.82 

KPT-335 - VERDINEXOR 

  

					
			
	Confidential	 		  	

 PHYSICAL, CHEMICAL, AND PHARMACEUTICAL PROPERTIES AND FORMULATION 

Name of Drug and All Active Ingredients 
 Common
Name/Laboratory Name:    KPT-335 (KY9 (Piramal code)) 
 Chemical Name(s): 

(Z)-3-(3-(3,5-bis(trifluoromethyl)phenyl)-1H-1,2,4-triazol-1-yl)-
N’-(pyridin-2-yl)acrylohydrazide 
 (Z)-3-[3-(3,5-Bis-trifluoromethylphenyl)-1
H-[1,2,4]-triazol-1-yl]acrylic acid N’-pyridin-2-yl
hydrazide 
 2-Propenoic acid, 3-[3-[3,5-bis(trifluoromethyl)phenyl]-1H-1,2,4-triazol-1-yl]-,
 2-(2-pyridinyl)hydrazide, (2Z)- 
 INN:
Verdinexor 
 CAS Number: 1392136-43-4 

Appearance: White to off-white crystalline solid 

Molecular Weight: 442.32 g/mol 
 Empirical or
Molecular Formula:
C18H12F6N6O 

Solubility: 
  

			
	Acetic acid	  	[**]
		
	Methanol	  	[**]
		
	Ethanol	  	[**]
		
	Isopropanol	  	[**]
		
	0.1-1.0 M HCl	  	[**]
		
	pH 1.2 (HCl) with 1%SDS	  	[**]

 Chemical Structure of Verdinexor 
  

 

  

					
			
	 Confidential
	 		  	

 Drug Product Formulation 

Verdinexor is available as immediate-release coated tablets for PO administration. Available tablet strengths contain 2.5 mg, 10 mg, or 50 mg of
verdinexor per tablet. All three tablet strengths are round and convex in shape. The 2.5 mg, 10 mg and 50 mg tablets are orange, gray and green in color, respectively. 

Verdinexor tablets are prepared via a [**] process and contain approximately [**]%, [**]%, and [**]% by weight of the active pharmaceutical ingredient (API)
for [**] mg, [**] mg, and [**] mg, respectively. The granulate is comprised of [**], and [**]. Additional inactive excipients: [**] and [**] are blended with the granulate, compressed to make tablets, and coated with [**]. All
excipients used in the manufacture of verdinexor tablets are of compendial grade and/or pharmaceutical quality. None of the excipients used in the manufacture of the drug product are novel or have animal or human origin. Tablet strengths are
distinguished by tablet size and color. Each strength uses FD&C color within the granulation: [**] for [**] mg, [**] mg, and [**] mg, respectively. 

Storage and Handling of Dosage Form 

Verdinexor tablets will be stored at room temperature temperature between (59–77°F) or (15–25°C) in [**] bottles with an [**]. Tablets can be
stored refrigerated, but should not be stored frozen. Instructions for the receipt, inspection, storage, preparation, administration, and disposal of selinexor tablets are provided in the Pharmacy Manual at each clinical site. Tablet expiries will
be determined by ongoing stability studies. 
 Placebo 

Placebos (in appropriate studies) will be manufactured using the same excipients as the active tablets. Premix comprised of [**] and [**]. Additional inactive
excipients: microcrystalline cellulose, croscarmellose sodium, colloidal silicon dioxide and magnesium stearate are blended with [**] to match active tablets. All excipients used in the manufacture of the placebo tablets are of compendial grade
and/or pharmaceutical quality. None of the excipients used in the manufacture of the drug product are novel or have animal or human origin. 

  

					
			
	 Confidential
	 		  	

 SCHEDULE 2.1 

Overview Plan 
 [**]

  

					
			
	 Confidential
	 		  	

 SCHEDULE 10.2.2 

Karyopharm Patent Coverage as of May 18, 2018 

Confidential Materials omitted and filed separately with the Securities and Exchange Commission. A total of 3 pages were omitted. [**] 

  

					
			
	 ConfidentialEX-10.2

 Exhibit 10.2 

PARENT COMPANY GUARANTEE 

For the License Agreement by and between Karyopharm Therapeutics Inc. and Antengene Therapeutics Limited effective as of May 23, 2018
(the “Agreement”) 
 Antengene Corporation Co. Ltd., the parent entity of Antengene Therapeutics Limited, hereby fully and irrevocably
guarantees the full, complete and punctual performance of all of the obligations of Antengene Therapeutics Limited to Karyopharm Therapeutics Inc. as described in the Agreement, including those financial obligations set forth in Article 8 of the
Agreement. A copy of the Agreement is attached hereto as Appendix A. 
  

			
	ANTENGENE CORPORATION CO. LTD.
		
	BY:	 	/s/ Jay Mei
		
	NAME:	 	Jay Mei, MD, PhD
		
	TITLE:	 	Chief Executive Officer
	
	DATE: May 23, 2018

  
 Execution Copy 

 Appendix A: License Agreement 

[See Exhibit 10.1 to Form 10-Q] 

  
 Execution Copy

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