10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

_______________________________________________________________________

FORM 10-Q

_______________________________________________________________________

(Mark One)

ý	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended March 31, 2019
	OR
¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from            to

Commission File Number: 001-37686

_______________________________________________________________________

BEIGENE, LTD.

(Exact name of registrant as specified in its charter)

_______________________________________________________________________

Cayman Islands	98-1209416
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

c/o Mourant Governance Services (Cayman) Limited
94 Solaris Avenue, Camana Bay
Grand Cayman
Cayman Islands	KY1-1108
(Address of principal executive offices)	(Zip Code)

+1 (345) 949 4123

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý     No  ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).     Yes  ý     No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	ý	Accelerated Filer	¨
Non-accelerated filer	¨	Smaller reporting company	¨
		Emerging growth company	¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes  ¨     No  ý

Securities registered pursuant to Section 12(b) of the Act:
Title of each class	Trading Symbol(s)	Name of each exchange on which registered
American Depositary Shares, each representing 13 Ordinary Shares, par value $0.0001 per share	BGNE	The NASDAQ Global Select Market
Ordinary Shares, par value $0.0001 per share*	06160	The Stock Exchange of Hong Kong Limited

As of April 30, 2019, 777,672,755 ordinary shares, par value $0.0001 per share, were outstanding, of which 606,358,597 ordinary shares were held in the form of 46,642,969 American Depositary Shares, each representing 13 ordinary shares.

*Included in connection with the registration of the American Depositary Shares with the Securities and Exchange Commission. The ordinary shares are not registered or listed for trading in the United States but are listed for trading on The Stock Exchange of Hong Kong Limited.

BeiGene, Ltd.

Quarterly Report on Form 10-Q

		Page
PART I.	FINANCIAL INFORMATION	3
Item 1.	Financial Statements	3
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	35
Item 4.	Controls and Procedures	37
PART II.	OTHER INFORMATION	38
Item 1.	Legal Proceedings	38
Item 1A.	Risk Factors	38
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	83
Item 3.	Defaults Upon Senior Securities	83
Item 4.	Mine Safety Disclosures	83
Item 5.	Other Information	83
Item 6.	Exhibits	83
SIGNATURES		85

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PART I.     FINANCIAL INFORMATION

Item 1.     Financial Statements

BEIGENE, LTD.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Amounts in thousands of U.S. Dollars (“$”), except for number of shares and per share data)

		As of
		March 31,		December 31,
	Note	2019		2018
		$		$
		(unaudited)		(audited)
Assets
Current assets:
Cash and cash equivalents		764,492		712,937
Short-term restricted cash	5	14,900		14,544
Short-term investments	5	849,167		1,068,509
Accounts receivable		58,976		41,056
Unbilled receivable		6,114		8,612
Inventories	6	13,140		16,242
Prepaid expenses and other current assets	12	89,941		81,942
Total current assets		1,796,730		1,943,842
Long-term restricted cash	5	8,991		13,232
Property, plant and equipment, net	7	197,806		157,061
Land use right, net	1	—		45,058
Operating lease right-of-use assets	9	72,624		—
Intangible assets, net	10	6,841		7,172
Goodwill		109		109
Deferred tax assets	11	30,526		29,542
Other non-current assets	12	58,605		53,668
Total non-current assets		375,502		305,842
Total assets		2,172,232		2,249,684
Liabilities and shareholders' equity
Current liabilities:
Accounts payable		105,320		113,283
Accrued expenses and other payables	12	90,737		100,414
Deferred revenue, current portion		17,504		18,140
Tax payable	11	6,857		5,888
Current portion of operating lease liabilities	9	9,451		—
Current portion of long-term bank loan	13	8,940		8,727
Total current liabilities		238,809		246,452
Non-current liabilities:
Long-term bank loan	13	77,480		40,785
Shareholder loan	14	155,174		148,888
Deferred revenue, non-current portion		8,240		9,842
Operating lease liabilities	9	19,545		—
Deferred tax liabilities		11,333		11,139
Other long-term liabilities	12	38,972		38,931
Total non-current liabilities		310,744		249,585
Total liabilities		549,553		496,037
Commitments and contingencies	21
Equity:
Ordinary shares, US$0.0001 par value per share; 9,500,000,000 shares authorized; 777,413,184 and 776,263,184 shares issued and outstanding as of March 31, 2019 and December 31, 2018, respectively		78		77
Additional paid-in capital		2,777,474		2,744,814
Accumulated other comprehensive income	18	6,072		1,526
Accumulated deficit		(1,174,855	)	(1,007,215	)
Total BeiGene, Ltd. shareholders’ equity		1,608,769		1,739,202
Noncontrolling interest		13,910		14,445
Total equity		1,622,679		1,753,647
Total liabilities and equity		2,172,232		2,249,684

The accompanying notes are an integral part of these condensed consolidated financial statements.

3

BEIGENE, LTD.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Amounts in thousands of U.S. Dollars (“$”), except for number of shares and per share data)

(Unaudited)

		Three Months Ended
		March 31,
	Note	2019		2018
		$		$
Revenues
Product revenue, net	15	57,421		23,250
Collaboration revenue	3	20,412		9,294
Total revenues		77,833		32,544
Expenses
Cost of sales - product		(15,261	)	(4,550	)
Research and development		(178,351	)	(109,700	)
Selling, general and administrative		(57,645	)	(28,915	)
Amortization of intangible assets		(331	)	(188	)
Total expenses		(251,588	)	(143,353	)
Loss from operations		(173,755	)	(110,809	)
Interest income, net		4,477		1,552
Other income, net		1,728		729
Loss before income taxes		(167,550	)	(108,528	)
Income tax (expense) benefit	11	(519	)	3,412
Net loss		(168,069	)	(105,116	)
Less: net loss attributable to noncontrolling interests		(429	)	(520	)
Net loss attributable to BeiGene, Ltd.		(167,640	)	(104,596	)
Net loss per share attributable to BeiGene, Ltd., basic and diluted	16	(0.22	)	(0.16	)
Weighted-average shares outstanding, basic and diluted	16	774,750,255		670,510,605
Net loss per American Depositary Share (“ADS”), basic and diluted		(2.81	)	(2.03	)
Weighted-average ADSs outstanding, basic and diluted		59,596,173		51,577,739

The accompanying notes are an integral part of these condensed consolidated financial statements.

4

BEIGENE, LTD.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

(Amounts in thousands of U.S. Dollars (“$”), except for number of shares and per share data)

(Unaudited)

	Three Months Ended
	March 31,
	2019		2018
	$		$
Net loss	(168,069	)	(105,116	)
Other comprehensive income, net of tax of nil:
Foreign currency translation adjustments	3,755		272
Unrealized holding gain, net	685		329
Comprehensive loss	(163,629	)	(104,515	)
Less: comprehensive loss attributable to noncontrolling interests	(535	)	(456	)
Comprehensive loss attributable to BeiGene, Ltd.	(163,094	)	(104,059	)

The accompanying notes are an integral part of these condensed consolidated financial statements.

5

BEIGENE, LTD.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in thousands of U.S. Dollars (“$”), except for number of shares and per share data)

(Unaudited)

		Three months ended March 31,
	Note	2019		2018
		$		$
Operating activities:
Net loss		(168,069	)	(105,116	)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense		3,416		2,244
Share-based compensation expenses	17	26,392		17,396
Acquired in-process research and development		29,000		10,000
Non-cash interest expense		1,858		2,012
Deferred income tax benefits		(983	)	(4,090	)
Disposal gain on available-for-sale securities		(810	)	(482	)
Non-cash amortization of bond discount		(2,408	)	—
Changes in operating assets and liabilities:
Accounts receivable		(17,920	)	5,943
Unbilled receivable		2,498		(7,555	)
Inventories		3,102		3,432
Prepaid expenses and other current assets		(8,270	)	(13,758	)
Operating lease right-of-use assets		(1,588	)	—
Other non-current assets		(10,212	)	(2,082	)
Accounts payable		(20,364	)	(18,487	)
Accrued expenses and other payables		(8,790	)	6,115
Tax payable		969		733
Deferred revenue		(2,238	)	(1,739	)
Other long-term liabilities		892		933
Operating lease liabilities		1,550		—
Net cash used in operating activities		(171,975	)	(104,501	)
Investing activities:
Purchases of property, plant and equipment		(21,828	)	(9,696	)
Purchases of investments		(487,354	)	(632,224	)
Proceeds from sale or maturity of investments		710,598		257,568
Purchase of in-process research and development		(29,000	)	(10,000	)
Net cash provided by (used in) investing activities		172,416		(394,352	)
Financing activities:
Proceeds from follow-on public offering, net of underwriter discount		—		758,001
Payment of follow-on public offering cost		—		(414	)
Proceeds from long-term loan	13	36,695		—
Proceeds from option exercises and employee share purchase plan		6,269		6,314
Net cash provided by financing activities		42,964		763,901
Effect of foreign exchange rate changes, net		4,265		3,444
Net increase in cash, cash equivalents, and restricted cash		47,670		268,492
Cash, cash equivalents, and restricted cash at beginning of period		740,713		239,602
Cash, cash equivalents, and restricted cash at end of period		788,383		508,094
Supplemental cash flow information:
Cash and cash equivalents		764,492		490,634
Restricted cash, current		14,900		17,460
Restricted cash, non-current		8,991		—
Income taxes paid		360		329
Interest expense paid		888		331
Supplemental non-cash information:
Acquisitions of equipment included in accounts payable		32,462		3,640
Changes in operating assets and liabilities adjusted through accumulated deficit		—		2,291

The accompanying notes are an integral part of these condensed consolidated financial statements.

6

BEIGENE, LTD.

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(Amounts in thousands of U.S. Dollars (“$”), except for number of shares and per share data)

(Unaudited)

	Attributable to BeiGene, Ltd.
	Ordinary Shares			Additional Paid-In Capital	Accumulated Other Comprehensive Income		Accumulated Deficit		Total		Noncontrolling Interests
	Shares		Amount										Total
			$	$	$		$		$		$		$
Balance at December 31, 2018	776,263,184		77	2,744,814	1,526		(1,007,215	)	1,739,202		14,445		1,753,647
Exercise of options, ESPP and release of RSUs	2,066,383		1	6,268	—		—		6,269		—		6,269
Use of shares reserved for share option exercises	(916,383	)	—	—	—		—		—		—		—
Share-based compensation	—		—	26,392	—		—		26,392		—		26,392
Other comprehensive income	—		—	—	4,546		—		4,546		(106	)	4,440
Net loss	—		—	—	—		(167,640	)	(167,640	)	(429	)	(168,069	)
Balance at March 31, 2019	777,413,184		78	2,777,474	6,072		(1,174,855	)	1,608,769		13,910		1,622,679
Balance at December 31, 2017	592,072,330		59	1,000,747	(480	)	(330,517	)	669,809		14,422		684,231
Adjustment to opening balance of equity	—		—	—	263		(2,929	)	(2,666	)	375		(2,291	)
Balance at January 1, 2018	592,072,330		59	1,000,747	(217	)	(333,446	)	667,143		14,797		681,940
Issuance of ordinary shares in connection with follow-on public offering	102,970,400		10	757,577	—		—		757,587		—		757,587
Issuance of shares reserved for share option exercises	213,018		—	—	—		—		—		—		—
Share-based compensation	—		—	17,396	—		—		17,396		—		17,396
Exercise of options and release of Restricted Share Units ("RSUs")	3,686,982		1	6,313	—		—		6,314		—		6,314
Other comprehensive income	—		—	—	537		—		537		64		601
Net loss	—		—	—	—		(104,596	)	(104,596	)	(520	)	(105,116	)
Balance at March 31, 2018	698,942,730		70	1,782,033	320		(438,042	)	1,344,381		14,341		1,358,722

The accompanying notes are an integral part of these condensed consolidated financial statements.

7

BEIGENE, LTD.

NOTES TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Amounts in thousands of U.S. Dollar (“$”) and Renminbi (“RMB”), except for number of shares and per share data)

(Unaudited)

1. Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies

Description of business

BeiGene, Ltd. (the “Company”) is a commercial-stage biotechnology company focused on developing and commercializing innovative molecularly targeted and immuno-oncology drugs for the treatment of cancer. The Company’s internally-developed lead drug candidates are currently in late-stage clinical trials, and it is marketing three in-licensed drugs in China from which it has been generating product revenue since September 2017.

The Company was incorporated under the laws of the Cayman Islands as an exempted company with limited liability in October 2010. The Company completed its initial public offering (“IPO”) on the NASDAQ Global Select Market in February 2016 and has completed subsequent follow-on public offerings and a sale of ordinary shares to Celgene Switzerland LLC (“Celgene Switzerland”) in a business development transaction. On August 8, 2018, the Company completed its IPO on the Stock Exchange of Hong Kong Limited (“HKEx”) and a global follow-on public offering in which it raised approximately $869,709 in net proceeds, after deducting underwriting discounts and commissions and offering expenses. Effective August 8, 2018, the Company is dual-listed in both the United States and Hong Kong.

As of March 31, 2019, there were no changes to the Company's subsidiaries listed in Note 1 to the audited financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2018 ("Annual Report"), except for the addition of BeiGene Singapore Pte., Ltd., a new wholly-owned subsidiary of BeiGene, Ltd.

Basis of presentation and consolidation

The accompanying condensed consolidated balance sheet as of March 31, 2019, the condensed consolidated statements of operations and comprehensive loss for the three months ended March 31, 2019 and 2018, the condensed consolidated statements of cash flows and the condensed consolidated statements of shareholders' equity for the three months ended March 31, 2019 and 2018, and the related footnote disclosures are unaudited. The accompanying unaudited interim financial statements were prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), including guidance with respect to interim financial information and in conformity with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for annual financial statements. These financial statements should be read in conjunction with the condensed consolidated financial statements and related footnotes included in the Company’s Annual Report.

The unaudited condensed consolidated interim financial statements have been prepared on the same basis as the annual financial statements and, in the opinion of management, reflect all normal recurring adjustments, necessary to present a fair statement of the results for the interim periods presented. Results of the operations for the three months ended March 31, 2019 are not necessarily indicative of the results expected for the full fiscal year or for any future annual or interim period.

The condensed consolidated financial statements include the financial statements of the Company and its subsidiaries. All significant intercompany transactions and balances between the Company and its subsidiaries are eliminated upon consolidation.

Noncontrolling interests are recognized to reflect the portion of the equity of subsidiaries which are not attributable, directly or indirectly, to the controlling shareholders. The Company consolidates its interests in its joint venture, BeiGene Biologics Co., Ltd. ("BeiGene Biologics"), under the voting model and recognizes the minority shareholders' equity interest as a noncontrolling interest in its condensed consolidated financial statements (as described in Note 8).

Use of estimates

The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the period. Areas where management uses subjective judgment include, but are not limited to, estimating the useful lives of long-lived assets, estimating variable consideration in product sales and collaboration revenue arrangements, estimating the incremental

8

borrowing rate for operating lease liabilities, identifying separate accounting units and the standalone selling price of each performance obligation in the Company’s revenue arrangements, estimating the fair value of net assets acquired in business combinations, assessing the impairment of long-lived assets, share-based compensation expenses, realizability of deferred tax assets, estimating uncertain tax positions and the fair value of financial instruments. Management bases the estimates on historical experience, known trends and various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results could differ from these estimates.

Recent accounting pronouncements

New accounting standards which have been adopted

In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-2, Leases. Subsequently, the FASB issued ASU 2018-1, Land Easement Practical Expedient, which provides an optional transition practical expedient for land easements, ASU 2018-10, Codification Improvements to Topic 842, Leases, which clarifies certain aspects of the guidance issued in ASU 2016-2; ASU 2018-11, Leases (Topic 842): Targeted Improvements, which provides an additional transition method and a practical expedient for separating components of a contract for lessors, ASU 2018-20, Leases (Topic 842)- Narrow-Scope Improvements for Lessors, which allows certain accounting policy elections for lessors; and ASU 2019-1, Leases (Topic 842): Codification Improvements, which clarifies certain aspects of the guidance (collectively, the "Lease ASUs"). The Lease ASUs require lessees to recognize assets and liabilities related to lease arrangements longer than 12 months on the balance sheet. This standard also requires additional disclosures by lessees and contains targeted changes to accounting by lessors. The updated guidance was effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. Leases will be classified as finance or operating, with the classification affecting the pattern and classification of expense recognition. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous GAAP. A modified retrospective transition approach is required, applying the new standard to all leases existing at the date of initial adoption. The guidance permits entities to choose to use either its effective date or the beginning of the earliest period presented in the financial statements as its date of initial application.

The Company adopted the new standard effective January 1, 2019 using the effective date method and did not restate comparative periods. The Company elected the package of practical expedients permitted under the transition guidance within the new standard, which permits the Company not to reassess under the new standard its prior conclusions about lease identification, lease classification and initial direct costs. Upon adoption, the Company recognized a lease liability of $27,446, with corresponding right-of-use ("ROU") assets of $25,978 based on the present value of the remaining minimum rental payments under existing operating leases. The difference between the lease liability and right-of-use asset relates to the reversal of existing deferred rent and prepaid rent balances of $1,739 and $271, respectively. Additionally, the Company reclassified its land use rights of $45,058 to ROU assets upon adoption. The adoption of the standard did not impact the Company’s condensed consolidated statements of operations or cash flows.

In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This update provides companies the option to reclassify to retained earnings the income tax accounting effects related to items originating in accumulated other comprehensive income ("AOCI") as a result of the U.S. Tax Cuts and Jobs Act ("TCJA") enacted on December 22, 2017. This update was effective in fiscal years, including interim periods, beginning after December 15, 2018, with early adoption permitted. None of the income tax accounting effects of the TCJA related to items that originated in AOCI and thus adopting of this standard did not have any impact on the Company’s condensed consolidated financial statements. Other tax effects of items that originate in AOCI will be removed when the underlying circumstance which gives rise to the tax impact no longer exists, based on an aggregate portfolio approach.

9

Impact of adopted accounting standards

The cumulative effect of changes made to the Company’s condensed consolidated January 1, 2019 balance sheet for the adoption of the Lease ASUs were as follows:

	Balance at	Adjustments		Balance at
	December 31,	Due to		January 1,
	2018	Lease ASUs		2019
	$	$		$
Assets:
Prepaid expenses and other current assets	81,942	(271	)	81,671
Land use right, net	45,058	(45,058	)	—
Operating lease right-of-use assets	—	71,036		71,036
Liabilities:
Accrued expenses and other payables	100,414	(888	)	99,526
Current portion of operating lease liabilities	—	8,684		8,684
Operating lease liabilities	—	18,762		18,762
Other long-term liabilities	38,931	(851	)	38,080

New accounting standards which have not yet been adopted

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses ("ASU 2016-13"). The amendments in ASU 2016-13 update guidance on reporting credit losses for financial assets. These amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. For public business entities that are U.S. SEC filers, ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework- Changes to the Disclosure Requirements for Fair Value Measurement. The update eliminates, modifies, and adds certain disclosure requirements for fair value measurements. This update is effective in fiscal years, including interim periods, beginning after December 15, 2019, and early adoption is permitted. The added disclosure requirements and the modified disclosure on the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented. All other changes to disclosure requirements in this update should be applied retrospectively to all periods presented upon their effective date. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. This update requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in ASC 350-40 to determine which implementation costs to defer and recognize as an asset. This update is effective in fiscal years, including interim periods, beginning after December 15, 2019, and early adoption is permitted. This guidance should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This update clarifies that certain transactions between participants in a collaborative arrangement should be accounted for under ASC 606 when the counterparty is a customer and precludes an entity from presenting consideration from a transaction in a collaborative arrangement as revenue from contracts with customers if the counterparty is not a customer for that transaction. The update is effective in fiscal years beginning after December 15, 2019, and interim periods therein, and early adoption is permitted for entities that have adopted ASC 606. This guidance should be applied retrospectively to the date of initial application of Topic 606. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

Significant accounting policies

For a more complete discussion of the Company’s significant accounting policies and other information, the condensed consolidated financial statements and notes thereto should be read in conjunction with the consolidated financial statements included in the Company’s Annual Report for the year ended December 31, 2018.

10

Leases

The Company determines if an arrangement is a lease at inception. The Company has lease agreements with lease and non-lease components, which are accounted for as a single lease component based on the Company’s policy election to combine lease and non-lease components for its leases. Leases are classified as operating or finance leases in accordance with the recognition criteria in ASC 842-20-25. The Company’s lease portfolio consists entirely of operating leases as of March 31, 2019. The Company’s leases do not contain any material residual value guarantees or material restrictive covenants.

At the commencement date of a lease, the Company determines the classification of the lease based on the relevant factors present and records a ROU asset and lease liability. ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. ROU assets and lease liabilities are calculated as the present value of the lease payments not yet paid. Variable lease payments not dependent on an index or rate are excluded from the ROU asset and lease liability calculations and are recognized in expense in the period which the obligation for those payments is incurred. As the rate implicit in the Company’s leases is not typically readily available, the Company uses an incremental borrowing rate based on the information available at the lease commencement date in determining the present value of lease payments. This incremental borrowing rate reflects the fixed rate at which the Company could borrow on a collateralized basis the amount of the lease payments in the same currency, for a similar term, in a similar economic environment. ROU assets include any lease prepayments and are reduced by lease incentives. Operating lease expense for lease payments is recognized on a straight-line basis over the lease term. Lease terms are based on the non-cancelable term of the lease and may contain options to extend the lease when it is reasonably certain that the Company will exercise that option.

Operating leases are included in operating lease right-of-use assets and lease liabilities on the condensed consolidated balance sheet. Lease liabilities that become due within one year of the balance sheet date are classified as current liabilities.

Leases with an initial lease term of 12 months or less are not recorded on the condensed consolidated balance sheet. Lease expense for these leases is recognized on a straight-line basis over the lease term.

Land Use Rights 

All land in the People's Republic of China ("PRC") is owned by the PRC government. The PRC government may sell land use rights for a specified period of time. Land use rights represent operating leases in accordance with ASC 842. The purchase price of land use rights represents lease prepayments to the PRC government and is recorded as an operating lease ROU asset on the balance sheet. The ROU asset is amortized over the remaining lease term.

In 2017, the Company acquired a land use right from the local Bureau of Land and Resources in Guangzhou for the purpose of constructing and operating the biologics manufacturing facility in Guangzhou. The Guangzhou land use right is being amortized over the term of the land use right, which is 50 years. 

In 2018, the Company acquired a second land use right in conjunction with the Innerway asset acquisition (see Note 4). The land use right is being amortized over the term of the land use right, which is 36 years.

Except for the changes to the Company’s significant accounting policies related to the adoption of the Lease ASUs, there have been no other material changes to the Company’s significant accounting policies as of and for the three months ended March 31, 2019, as compared to the significant accounting policies described in the Annual Report.

2. Fair Value Measurements

The Company measures certain financial assets and liabilities at fair value. Fair value is determined based upon the exit price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants, as determined by either the principal market or the most advantageous market. Inputs used in the valuation techniques to derive fair values are classified based on a three-level hierarchy, as follows:

Level 1 - Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets.

Level 2 – Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in market with insufficient volume or infrequent transactions (less active markets); or model-derived valuations in which all significant inputs are observable or can be derived principally from or corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability.

11

The Company considers an active market to be one in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis, and considers an inactive market to be one in which there are infrequent or few transactions for the asset or liability, the prices are not current, or price quotations vary substantially either over time or among market makers.

The following tables present the Company’s financial assets and liabilities measured and recorded at fair value on a recurring basis using the above input categories as of March 31, 2019 and December 31, 2018:

	Quoted Price
	in Active	Significant
	Market for	Other	Significant
	Identical	Observable	Unobservable
	Assets	Inputs	Inputs
As of March 31, 2019	(Level 1)	(Level 2)	(Level 3)
	$	$	$
Short-term investments (Note 5):
U.S. treasury securities	825,435	—	—
U.S. agency securities	23,732	—	—
Cash equivalents
U.S. treasury securities	124,856	—	—
Money market funds	59,884	—	—
Total	1,033,907	—	—

	Quoted Price
	in Active	Significant
	Market for	Other	Significant
	Identical	Observable	Unobservable
	Assets	Inputs	Inputs
As of December 31, 2018	(Level 1)	(Level 2)	(Level 3)
	$	$	$
Short-term investments (Note 5):
U.S. treasury securities	1,068,509	—	—
Cash equivalents
Money market funds	159,810	—	—
Total	1,228,319	—	—

 The Company had no liabilities measured and recorded at fair value on a recurring basis as of March 31, 2019 or December 31, 2018. 

3. Research and Development Collaborative Arrangements

To date, the Company’s collaboration revenue has consisted of (1) upfront license fees, research and development reimbursement revenue, and research and development services revenue from its collaboration agreement with Celgene Corporation ("Celgene") on the Company’s investigational anti-programmed cell death protein 1 (“PD-1”) inhibitor, tislelizumab (BGB-A317), and (2) upfront license fees and milestone payments from its collaboration agreement with Merck KGaA, Darmstadt Germany on pamiparib (BGB-290) and lifirafenib (BGB-283). The collaboration agreement with Merck KGaA was terminated in December 2018.

12

The following table summarizes total collaboration revenue recognized for the three months ended March 31, 2019 and 2018:

	Three Months Ended
	March 31,
	2019	2018
	$	$
Reimbursement of research and development costs	18,174	7,555
Research and development service revenue	2,238	1,739
Total	20,412	9,294

For the three months ended March 31, 2019, the Company recognized collaboration revenue of $20,412. The Company recognized $18,174 of research and development reimbursement revenue for the three months ended March 31, 2019 for the trials that Celgene has opted into. The $2,238 of research and development services revenue for the three months ended March 31, 2019, primarily reflects the recognition of upfront consideration that was allocated to research and development services at the time of the collaboration and is recognized from deferred revenue over the term of the respective clinical studies for the specified indications.

For the three months ended March 31, 2018, the Company recognized collaboration revenue of $9,294. The Company recognized $7,555 of research and development reimbursement revenue for the three months ended March 31, 2018 for the trials that Celgene has opted into. The $1,739 of research and development services revenue reflects the recognition of upfront consideration that was allocated to research and development services at the time of the collaboration and is recognized from deferred revenue over the term of the respective clinical studies for the specified indications.

4. Business Combinations and Asset Acquisitions

BeiGene Pharmaceuticals (Guangzhou) Co., Ltd.

 On September 21, 2018, BeiGene (Guangzhou) Co., Ltd. ("BeiGene Guangzhou") acquired 100% of the equity interests of Baiji Shenzhou (Guangzhou) Pharmaceuticals Co., Ltd. (formerly known as Huajian Pharmaceuticals Co., Ltd.), which subsequently changed its name to BeiGene Pharmaceuticals (Guangzhou) Co., Ltd., a pharmaceutical distribution company, for total cash consideration of $612, including transaction costs of $59. The acquisition was concentrated in a single identifiable asset, a drug distribution license, and thus the Company has concluded that the transaction is an asset acquisition as it does not meet the accounting definition of a business combination. The total cost was allocated to the drug distribution license and corresponding deferred tax liability, resulting in an $816 intangible asset for the license and a deferred tax liability of $204.

Beijing Innerway Bio-tech Co., Ltd.

On October 4, 2018, BeiGene (Hong Kong) Co., Ltd. ("BeiGene HK") completed the acquisition of 100% of the equity interest of Beijing Innerway Bio-tech Co., Ltd., the owner of the Company's research, development and office facility in Changping, Beijing, China, for total cash consideration of $38,654. The acquisition was concentrated in a single identifiable asset or group of assets, the building and associated land use right, and thus the Company has concluded that the transaction is an asset acquisition as it does not meet the accounting definition of a business combination. The total cost of the transaction of $38,865, which includes transaction costs of $211, was allocated based on the relative fair values of the net assets acquired, as follows:

	Amount
Land use right	$	33,783
Building	15,874
Deferred tax liability	(11,221		)
Other	429
Total cost	38,865

5. Restricted Cash and Short-term Investments

The Company’s restricted cash balance of $23,891 as of March 31, 2019 consisted of BeiGene Guangzhou Biologics Manufacturing Co., Ltd.'s ("BeiGene Guangzhou Factory's") secured deposits held in designated bank accounts for issuance of letter of credit, and restricted cash deposits as security for the long-term bank loan (Note 13).

13

Short-term investments as of March 31, 2019 consisted of the following available-for-sale debt securities:

		Gross	Gross	Fair Value
	Amortized	Unrealized	Unrealized	(Net Carrying
	Cost	Gains	Losses	Amount)
	$	$	$	$
U.S. treasury securities	823,079	2,356	—	825,435
U.S. agency securities	23,665	67	—	23,732
Total	846,744	2,423	—	849,167

Short-term investments as of December 31, 2018 consisted of the following available-for-sale debt securities:

		Gross	Gross	Fair Value
	Amortized	Unrealized	Unrealized	(Net Carrying
	Cost	Gains	Losses	Amount)
	$	$	$	$
U.S. treasury securities	1,066,770	1,802	63	1,068,509
Total	1,066,770	1,802	63	1,068,509

 The Company does not consider the investment in U.S. treasury securities or U.S. agency securities to be other-than-temporarily impaired at March 31, 2019.

6. Inventories

The Company’s inventory balance of $13,140 and $16,242 as of March 31, 2019 and December 31, 2018, respectively, consisted entirely of finished goods product purchased from Celgene for distribution in the PRC.

7. Property, plant and equipment

Property, plant and equipment are recorded at cost and consisted of the following:

	As of
	March 31,		December 31,
	2019		2018
	$		$
Laboratory equipment	24,771		22,636
Leasehold improvements	19,466		18,048
Building	15,905		15,857
Manufacturing equipment	16,806		16,048
Office equipment	2,526		2,216
Electronic equipment	1,745		1,229
Computer software	1,331		1,262
Property, plant and equipment, at cost	82,550		77,296
Less accumulated depreciation	(23,267	)	(19,722	)
Construction in progress	138,523		99,487
Property, plant and equipment, net	197,806		157,061

 As of March 31, 2019 and December 31, 2018, construction in progress of $138,523 and $99,487, respectively, primarily related to the buildout of the Guangzhou manufacturing facility. Depreciation expense for the three months ended March 31, 2019 and March 31, 2018 was $3,085 and $1,984, respectively.

14

8. Manufacturing Facility in Guangzhou

On March 7, 2017, BeiGene HK, a wholly-owned subsidiary of the Company, and Guangzhou GET Technology Development Co., Ltd. (“GET”), entered into a definitive agreement to establish a commercial scale biologics manufacturing facility in Guangzhou, Guangdong Province, PRC.

On March 7, 2017, BeiGene HK and GET entered into an Equity Joint Venture Contract (the “JV Agreement”). Under the terms of the JV Agreement, BeiGene HK made an initial cash capital contribution of RMB200,000 and a subsequent contribution of one or more biologics assets in exchange for a 95% equity interest in BeiGene Biologics. GET made a cash capital contribution of RMB100,000 to BeiGene Biologics, representing a 5% equity interest in BeiGene Biologics. In addition, on March 7, 2017, BeiGene Biologics entered into a contract with GET, under which GET agreed to provide a RMB900,000 loan (the “Shareholder Loan”) to BeiGene Biologics (see Note 14). BeiGene Biologics is working to establish a biologics manufacturing facility in Guangzhou, through a wholly-owned subsidiary, the BeiGene Guangzhou Factory, to manufacture biologics for the Company and its subsidiaries.

On April 11, 2017, BeiGene HK, GET and BeiGene Biologics amended the JV Agreement and the capital contribution agreement, among other things, to adjust the capital contribution schedules and adjust the initial term of the governing bodies and a certain management position. On April 13, 2017 and May 4, 2017, BeiGene HK made cash capital contributions of RMB137,830 and RMB2,415, respectively, into BeiGene Biologics. The remainder of the cash capital contribution from BeiGene HK to BeiGene Biologics will be paid by April 10, 2020. On April 14, 2017, GET made cash capital contributions of RMB100,000 into BeiGene Biologics. On April 14, 2017, BeiGene Biologics drew down the Shareholder Loan of RMB900,000 from GET (as further described in Note 14).

In the fourth quarter of 2017, BeiGene HK and BeiGene Biologics entered into an Equity Transfer Agreement to transfer 100% of the equity interest of BeiGene Shanghai into BeiGene Biologics. The transfer consideration for the purchased interests under this Equity Transfer Agreement is the fair value of the 100% equity of BeiGene Shanghai appraised by a qualified Chinese valuation firm under the laws of the PRC. Upon the transfer of equity in BeiGene Shanghai, BeiGene HK’s equity interest in BeiGene Shanghai became 95%. As of March 31, 2019, the Company and GET held 95% and 5% equity interests in BeiGene Biologics, respectively.

As of March 31, 2019, the Company's cash and cash equivalents of $143,320 and restricted cash of $23,891 held by BeiGene Biologics to be used to build the commercial scale biologics facility and to fund research and development of the Company's biologics drug candidates in China.

9. Leases

The Company has operating leases for office and manufacturing facilities in the United States, Switzerland, and China. The leases have remaining lease terms of up to five years, some of which include options to extend the leases that have not been included in the calculation of the Company’s lease liabilities and ROU assets. The Company has land use rights which represent land acquired for constructing and operating the biologics manufacturing facility in Guangzhou, and the land acquired for the Company's research, development and office facility in Changping, Beijing. The land use rights represent lease prepayments and are expensed over the remaining term of the rights, which is 48 years for the Guangzhou land use right and 35 years for the Changping land use right. The Company also has certain leases with terms of 12 months or less for certain equipment, office and lab space, which are not recorded to the balance sheet.

The components of lease expense were as follows:

	Three months ended
	March 31,
	2019
	$
Operating lease cost	3,393
Variable lease cost	297
Short-term lease cost	133
Total lease cost	3,823

Total expenses under operating leases were $1,653 for the three months ended March 31, 2018.

15

Supplemental balance sheet information related to leases was as follows:

	As of
	March 31,
	2019
	$
Operating lease right-of-use assets	27,518
Land use rights, net	45,106
Total operating lease right-of-use assets	72,624
Current portion of operating lease liabilities	9,451
Operating lease liabilities	19,545
Total lease liabilities	28,996

Maturities of operating lease liabilities are as follows (2):

	$
Nine months ending December 31, 2019	8,675
Year ending December 31, 2020	10,583
Year ending December 31, 2021	8,123
Year ending December 31, 2022	4,173
Year ending December 31, 2023	1,445
Thereafter	104
Total lease payments	33,103
Less imputed interest	(4,107	)
Present value of lease liabilities	28,996

(2) As of March 31, 2019, the Company has additional operating leases for office facilities that have not yet commenced of $5,858. These operating leases will commence during the fiscal year 2019 with lease terms of up to three years.

Other supplemental information related to leases is summarized below:    

	Three months ended
	March 31,
	2019
	$
Operating cash flows used in operating leases	2,994
ROU assets obtained in exchange for new operating lease liabilities	3,464

	As of
	March 31,
	2019
	$
Weighted-average remaining lease term (years)	3
Weighted-average discount rate	8.37	%

16

The Company adopted the Lease ASUs effective January 1, 2019 and did not restate prior periods. The undiscounted future minimum payments under non-cancelable operating leases as of December 31, 2018, prior to the adoption of the Lease ASUs was as follows:

	$
Year ending December 31:
2019	10,752
2020	9,972
2021	7,805
2022	3,923
2023 and thereafter	1,357
Total	33,809

10. Intangible Assets

Intangible assets as of March 31, 2019 and December 31, 2018 are summarized as follows:

	As of
	March 31, 2019				December 31, 2018
	Gross				Gross
	carrying	Accumulated		Intangible	carrying	Accumulated		Intangible
	amount	amortization		assets, net	amount	amortization		assets, net
	$	$		$	$	$		$
Finite-lived intangible assets:
Product distribution rights	7,500	(1,187	)	6,313	7,500	(1,000	)	6,500
Trading license	816	(288	)	528	816	(144	)	672
Total finite-lived intangible assets	8,316	(1,475	)	6,841	8,316	(1,144	)	7,172

 Product distribution rights consist of distribution rights on the approved cancer therapies licensed from Celgene, ABRAXANE^®, REVLIMID^®, and VIDAZA^®, and its investigational agent CC-122 acquired as part of the Celgene transaction. The Company is amortizing the product distribution rights over a period of 10 years. The trading license represents the Guangzhou drug distribution license acquired on September 21, 2018. The Company is amortizing the drug distribution trading license over the remainder of the license term through February 2020.

Amortization expense of intangible assets for the three months ended March 31, 2019 and March 31, 2018 was $331 and$188, respectively. As of March 31, 2019, expected amortization expense for the unamortized finite-lived intangible assets is approximately $995 for the remainder of 2019, $846 in 2020, $750 in 2021, $750 in 2022, $750 in 2023, and $2,750 in 2024 and thereafter.

11. Income Taxes

Income tax expense was $519 for the three months ended March 31, 2019, and income tax benefit was $3,412 for the three months ended March 31, 2018. The income tax expense for the three months ended March 31, 2019 was primarily attributable to income reported in the U.S. and certain China subsidiaries offset by U.S. research and development tax credits and other special tax deductions. The income tax benefit for the three months ended March 31, 2018 was primarily attributable to U.S. research and development tax credits and the discrete tax benefit of employee stock option exercises.

On a quarterly basis, the Company evaluates the realizability of deferred tax assets by jurisdiction and assesses the need for a valuation allowance. In assessing the realizability of deferred tax assets, the Company considers historical profitability, evaluation of scheduled reversals of deferred tax liabilities, projected future taxable income and tax-planning strategies. Valuation allowances have been provided on deferred tax assets where, based on all available evidence, it was considered more likely than not that some portion or all of the recorded deferred tax assets will not be realized in future periods. After consideration of all positive and negative evidence, the Company believes that as of March 31, 2019, it is more likely than not the deferred tax assets will not be realized for the Company’s subsidiaries in Australia and Switzerland, as well as certain subsidiaries in China.

17

As of March 31, 2019, the Company had gross unrecognized tax benefits of $2,559. The Company does not anticipate that the amount of existing unrecognized tax benefits will significantly change within the next 12 months. The Company’s reserve for uncertain tax positions increased by $264 in the three months ended March 31, 2019 due to additions related to U.S. federal and state tax credits and incentives.

The Company has elected to record interest and penalties related to income taxes as a component of income tax expense. As of March 31, 2019 and December 31, 2018, the Company's accrued interest and penalties, where applicable, related to uncertain tax positions were not material.

The Company conducts business in a number of tax jurisdictions and, as such, is required to file income tax returns in multiple jurisdictions globally. As of March 31, 2019, Australia tax matters are open to examination for the years 2013 through 2019, China tax matters are open to examination for the years 2013 through 2019 and U.S. federal tax matters are open to examination for years 2015 through 2019. Various U.S. states and other non-US tax jurisdictions in which the Company files tax returns remain open to examination for 2010 through 2019.

12. Supplemental Balance Sheet Information

Prepaid expenses and other current assets consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Prepaid research and development costs	66,817	58,673
Prepaid taxes	9,078	10,479
Interest receivable	2,580	3,096
Other	11,466	9,694
Total	89,941	81,942

Other non-current assets consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Prepayment of long-term assets	10,035	11,981
Prepayment of facility capacity expansion activities (1)	25,809	25,193
Prepaid VAT	19,768	14,671
Rental deposits and other	2,993	1,823
Total	58,605	53,668

(1) Represents a payment for a facility expansion under a commercial supply agreement. The payment will be credited back to the Company through credits on supply purchases over the life of the supply agreement.

18

Accrued expenses and other payables consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Compensation related	18,540	35,887
External research and development activities related	46,889	34,588
Commercial activities	9,437	10,433
Individual income tax and other taxes	8,626	8,030
Sales rebates and returns related	3,366	4,749
Professional fees and other	3,879	6,727
Total	90,737	100,414

Other long-term liabilities consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Deferred government grant income	38,776	37,851
Other	196	1,080
Total	38,972	38,931

13. Long-term Bank Loans

On September 2, 2015, BeiGene (Suzhou) Co., Ltd. ("BeiGene (Suzhou)") entered into a loan agreement with Suzhou Industrial Park Biotech Development Co., Ltd. and China Construction Bank to borrow RMB120,000 at a 7% fixed annual interest rate. The loan is secured by BeiGene (Suzhou)’s equipment with a net carrying amount of $13,500 and the Company’s rights to a PRC patent on a drug candidate. In September 2018, the Company repaid the first tranche of $8,736 (RMB60,000). The remaining loan principal amount outstanding as of March 31, 2019 of $8,940 (RMB60,000) is repayable on September 30, 2019.

 On April 4, 2018, BeiGene Guangzhou Factory entered into a nine-year loan agreement with China Construction Bank to borrow a RMB denominated loan of RMB580,000 at a floating interest rate benchmarking RMB loans interest rate of financial institutions in PRC. The loan is secured by BeiGene Guangzhou Factory’s land use right. Interest expense will be paid quarterly until the loan is fully settled. As of March 31, 2019, the Company has drawn down $77,480 (RMB520,000) of this loan, of which $36,695 (RMB240,000) was drawn down during the three months ended March 31, 2019. The loan interest rate was 4.9% for the three months ended March 31, 2019, and the maturity dates range from 2021 to 2027.

 As of March 31, 2019, the Company has unused long-term credit availability amounting to $8,940, attributed to the remaining credit available under the Guangzhou Factory loan. The Company plans to draw down the entire available amount before December 31, 2019. Interest expense recognized for the three months ended March 31, 2019 and 2018 was $941 and $331, respectively, among which, $641 and nil was capitalized, respectively.

14. Shareholder Loan

On March 7, 2017, BeiGene Biologics entered into the Shareholder Loan Contract with GET, pursuant to which GET agreed to provide a Shareholder Loan of RMB900,000 to BeiGene Biologics. The Shareholder Loan has a conversion feature, settled in a variable number of shares of common stock upon conversion (the “debt-to-equity conversion”). On April 14, 2017, BeiGene Biologics drew down the entire Shareholder Loan of RMB900,000 from GET.

Key features of the Shareholder Loan

The Shareholder Loan bears simple interest at a fixed rate of 8% per annum. No interest payment is due or payable prior to the repayment of the principal or the debt-to-equity conversion. The term of the Shareholder Loan is 72 months, commencing from the actual drawdown date of April 14, 2017 and ending on April 13, 2023, unless converted earlier.

19

The Shareholder Loan may be repaid or converted, either partially or in full, into an additional mid-single digit percentage equity interest in BeiGene Biologics prior to its maturity date, pursuant to the terms of the JV Agreement. BeiGene Biologics has the right to make early repayment at any time; provided, however, that if repayment is to occur before the debt-to-equity conversion it would require written approval of both BeiGene Biologics and GET. Upon conversion of the shareholder loan, GET will receive an additional equity interest in BeiGene Biologics, which will be based on the formula outlined in the JV Agreement.

The Shareholder Loan can only be used for BeiGene Biologics, including the construction and operation of the biologics manufacturing facility and research and development and clinical trials to be carried out by BeiGene Biologics. If BeiGene Biologics does not use the Shareholder Loan proceeds for the specified purposes, GET may be entitled to certain liquidated damages. In the event of an early termination of the JV Agreement, the Shareholder Loan will become due and payable at the time of termination of the JV Agreement.

Accounting for the Shareholder Loan

The Shareholder Loan is classified as a long-term liability and initially measured at the principal of RMB900,000. Interest will be accrued based on the interest rate of 8% per annum. As the Shareholder Loan may be share-settled by a number of shares with a fair value equal to a fixed settlement amount, the settlement is not viewed as a conversion feature, but as a redemption feature because the settlement amount does not vary with the share price. This in-substance redemption feature does not require bifurcation because it is clearly and closely related to the debt host that does not involve a substantial premium or discount. Since there is no conversion feature embedded in the Shareholder Loan, no beneficial conversion feature was recorded. There are no other embedded derivatives that are required to be bifurcated. The portion of interest accrued on the Shareholder Loan related to borrowings used to construct the BeiGene factory in Guangzhou is being capitalized in accordance with ASC 835-20, Interest – Capitalization of Interest.

For the three months ended March 31, 2019 and 2018, total interest expense generated from the Shareholder Loan was $2,645 and $3,280, respectively, among which, $788 and $815 was capitalized, respectively.

15.  Product Revenue

The Company’s product sales are derived from the sale of ABRAXANE^®, REVLIMID^®, and VIDAZA^® in China under a distribution license from Celgene. The table below presents the Company’s net product sales for the three months ended March 31, 2019 and 2018.

	Three Months Ended
	March 31,
	2019		2018
	$		$
Product revenue – gross	58,536		23,485
Less: Rebates and sales returns	(1,115	)	(235	)
Product revenue – net	57,421		23,250

 The following table presents the roll-forward of accrued sales rebates and returns for the three months ended March 31, 2019:

	Sales Rebates and Returns
	$
Balance as of December 31, 2018	4,749
Accrual	1,115
Payments	(2,498	)
Balance as of March 31, 2019	3,366

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16. Loss Per Share

Loss per share was calculated as follows:

	Three Months Ended
	March 31,
	2019			2018
	(in thousands, except share and per share data)
Numerator:
Net loss attributable to BeiGene, Ltd.	$	(167,640	)	$	(104,596	)
Denominator:
Weighted average shares outstanding, basic and diluted	774,750,255			670,510,605
Net loss per share attributable to BeiGene, Ltd., basic and diluted	$	(0.22	)	$	(0.16	)

The effects of all share options, restricted shares and restricted share units were excluded from the calculation of diluted loss per share, as their effect would have been anti-dilutive during the three months ended March 31, 2019 and 2018.

17. Share-Based Compensation Expense

2016 Share Option and Incentive Plan

On January 14, 2016, in connection with its U.S. IPO, the board of directors and shareholders of the Company approved the 2016 Share Option and Incentive Plan (the “2016 Plan”), which became effective on February 2, 2016. The Company initially reserved 65,029,595 ordinary shares for the issuance of awards under the 2016 Plan, plus any shares available under the 2011 Option Plan (the “2011 Plan”), and not subject to any outstanding options as of the effective date of the 2016 Plan, along with underlying share awards under the 2011 Plan that are cancelled or forfeited without issuance of ordinary shares. As of March 31, 2019, ordinary shares cancelled or forfeited under the 2011 Plan that were carried over to the 2016 Plan totaled 5,144,371. The 2016 Plan provided for an annual increase in the shares available for issuance, to be added on the first day of each fiscal year, beginning on January 1, 2017, equal to the lesser of (i) five percent (5%) of the outstanding shares of the Company’s ordinary shares on the last day of the immediately preceding fiscal year or (ii) such number of shares determined by the Company’s board of directors or the compensation committee. In August 2018, in connection with the Hong Kong IPO, the board of directors of the Company approved an amended and restated 2016 Plan to remove this “evergreen” provision and implement other changes required by the HKEx rules. In December 2018, the board of directors approved a second amended and restated 2016 Plan to increase the number of shares authorized for issuance by 38,553,159 ordinary shares, as well as amend the cap on annual compensation to independent directors and make other changes. The number of shares available for issuance under the 2016 Plan is subject to adjustment in the event of a share split, share dividend or other change in the Company’s capitalization.

During the three months ended March 31, 2019, the Company granted options for 590,967 ordinary shares and restricted share units for 2,266,550 ordinary shares under the 2016 Plan. As of March 31, 2019, options and restricted share units for ordinary shares outstanding under the 2016 Plan totaled 80,307,682 and 12,078,638, respectively.

2018 Inducement Equity Plan

On June 6, 2018, the board of directors of the Company approved the 2018 Inducement Equity Plan (the “2018 Plan”) and reserved 12,000,000 ordinary shares to be used exclusively for grants of awards to individuals that were not previously employees of the Company or its subsidiaries, as a material inducement to the individual’s entry into employment with the Company or its subsidiaries within the meaning of Rule 5635(c)(4) of the NASDAQ Listing Rules. The 2018 Plan was approved by the board of directors upon recommendation of the compensation committee, without shareholder approval pursuant to Rule 5635(c)(4) of the NASDAQ Listing Rules. The terms and conditions of the 2018 Plan, and the forms of award agreements to be used thereunder, are substantially similar to the 2016 Plan and the forms of award agreements thereunder. In August 2018, in connection with the listing of the Company’s ordinary shares on the HKEx, the board of directors of the Company approved an amended and restated 2018 Plan to implement changes required by the HKEx rules.

During the three months ended March 31, 2019, the Company did not grant any options or restricted share units under the 2018 Plan. As of March 31, 2019, options and restricted share units for ordinary shares outstanding under the 2018 Plan totaled 79,404 and 3,542,773, respectively.

21

2018 Employee Share Purchase Plan

On June 6, 2018, the shareholders of the Company approved the 2018 Employee Share Purchase Plan (the “ESPP”).  Initially, 3,500,000 ordinary shares of the Company were reserved for issuance under the ESPP. In August 2018, in connection with the Hong Kong IPO, the board of directors of the Company approved an amended and restated ESPP to remove an “evergreen” share replenishment provision originally included in the plan and implement other changes required by the HKEx rules. In December 2018, the board of directors approved a second amended and restated ESPP to increase the number of shares authorized for issuance by 3,855,315 ordinary shares to 7,355,315 ordinary shares. The ESPP allows eligible employees to purchase the Company’s ordinary shares (including in the form of ADSs) at the end of each offering period, which will generally be six months, at a 15% discount to the market price of the Company’s ADSs at the beginning or the end of each offering period, whichever is lower, using funds deducted from their payroll during the offering period. Eligible employees are able to authorize payroll deductions of up to 10% of their eligible earnings, subject to applicable limitations.

On February 28, 2019, the Company issued 154,505 ordinary shares to employees for aggregate proceeds of $1,385. The purchase price of the shares was $116.49 per ADS, or $8.96 per ordinary share, which was discounted in accordance with the terms of the ESPP from the closing price on NASDAQ on February 28, 2019 of $137.05 per ADS, or $10.54 per ordinary shares.

The following table summarizes total share-based compensation expense recognized for the three months ended March 31, 2019 and 2018:

	Three Months Ended
	March 31,
	2019	2018
	$	$
Research and development	15,771	12,052
Selling, general and administrative	10,621	5,344
Total	26,392	17,396

18. Accumulated Other Comprehensive Income

The movement of accumulated other comprehensive income was as follows:

			Unrealized
	Foreign Currency		Gains on
	Translation		Available-for-Sale
	Adjustments		Securities		Total
	$		$		$
Balance as of December 31, 2018	(212	)	1,738		1,526
Other comprehensive income before reclassifications	3,861		1,495		5,356
Amounts reclassified from accumulated other comprehensive income	—		(810	)	(810	)
Net-current period other comprehensive income	3,861		685		4,546
Balance as of March 31, 2019	3,649		2,423		6,072

19. Shareholders’ Equity

Follow-on public offerings

On August 8, 2018, the Company completed an initial public offering of its ordinary shares on the Hong Kong Stock Exchange and a follow-on public offering under the Company's effective Registration Statement on Form S-3 at a price of $13.76 per ordinary share, or $178.90 per ADS. In this offering, the Company sold 65,600,000 ordinary shares. Net proceeds after deducting underwriting discounts and commissions and offering expenses were $869,709.

On January 22, 2018, the Company completed a follow-on public offering under the Company’s effective Registration Statement on Form S-3 at a price of $101.00 per ADS, or $7.77 per ordinary share. In this offering, the Company sold 7,425,750 ADSs representing 96,534,750 ordinary shares. Additionally, the underwriters exercised their option to purchase an additional 495,050 ADSs representing 6,435,650 ordinary shares from the Company. Net proceeds from this offering, including the underwriter option, after deducting the underwriting discounts and offering expenses were $757,587.

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20. Restricted Net Assets

The Company’s ability to pay dividends may depend on the Company receiving distributions of funds from its PRC subsidiaries. Relevant PRC statutory laws and regulations permit payments of dividends by the Company’s PRC subsidiaries only out of the subsidiary's retained earnings, if any, as determined in accordance with PRC accounting standards and regulations. The results of operations reflected in the condensed consolidated financial statements prepared in accordance with GAAP differ from those reflected in the statutory financial statements of the Company’s PRC subsidiaries.

In accordance with the company law of the PRC, a domestic enterprise is required to provide statutory reserves of at least 10% of its annual after-tax profit until such reserve has reached 50% of its respective registered capital based on the enterprise’s PRC statutory accounts. A domestic enterprise is also required to provide discretionary surplus reserve, at the discretion of the Board of Directors, from the profits determined in accordance with the enterprise’s PRC statutory accounts. The aforementioned reserves can only be used for specific purposes and are not distributable as cash dividends. The Company’s PRC subsidiaries were established as domestic invested enterprises and therefore were subject to the above-mentioned restrictions on distributable profits.

During the three months ended March 31, 2019 and 2018, no appropriation to statutory reserves was made because the PRC subsidiaries had substantial losses during such periods.

As a result of these PRC laws and regulations, including the requirement to make annual appropriations of at least 10% of after-tax income and set aside as general reserve fund prior to payment of dividends, the Company’s PRC subsidiaries are restricted in their ability to transfer a portion of their net assets to the Company.

Foreign exchange and other regulation in the PRC may further restrict the Company's PRC subsidiaries from transferring funds to the Company in the form of dividends, loans and advances. As of March 31, 2019 and December 31, 2018, amounts restricted were the net assets of the Company’s PRC subsidiaries, which amounted to $105,688 and $93,281, respectively.

21. Commitments and Contingencies

Purchase Commitments

As of March 31, 2019, the Company had purchase commitments amounting to $56,135 related to minimum purchase requirements for finished goods inventory purchased from Celgene.

Capital commitments

The Company had capital commitments amounting to $26,647 for the acquisition of property, plant and equipment as of March 31, 2019, which were mainly for BeiGene Guangzhou Factory’s manufacturing facility in Guangzhou, China. 

22. Segment and geographic information

The Company operates in one segment. The Company’s long-lived assets are substantially located in the PRC. Net product revenues by geographic area are based upon the location of the customer, and net collaboration revenue is recorded in the jurisdiction in which the related income is expected to be sourced from. Total net revenues by geographic area are presented as follows:

	Three Months Ended
	March 31,
	2019	2018
	$	$
PRC	57,421	23,250
United States	13,268	6,041
Other	7,144	3,253
Total	77,833	32,544

23. Subsequent Event

On April 9, 2019, the Company entered into a global co-development and collaboration agreement with BioAtla LLC ("BioAtla") for the development, manufacturing and commercialization of BioAtla's investigational CAB-CTLA-4 antibody (BA3071), whereby BioAtla will co-develop the CAB-CTLA-4 antibody to defined early clinical objectives and the Company will then lead the parties' joint efforts to develop the product candidate and be responsible for global regulatory filings and

23

commercialization. Subject to the terms of the agreement, the Company will hold a co-exclusive license with BioAtla to develop and manufacture the product candidate globally and an exclusive license to commercialize the product candidate globally. The Company will be responsible for all costs of development, manufacturing and commercialization in Asia (excluding Japan), Australia and New Zealand (the "Company Territory"), and the parties will share development and manufacturing costs and commercial profits and losses upon specified terms in the rest of the world. BioAtla received an upfront payment of $20,000, and will receive a milestone payment upon reaching the defined early clinical objectives. BioAtla is also eligible to receive additional payments in subsequent development and regulatory milestones globally and commercial milestones in the Company Territory, together with tiered royalties on sales in the Company territory.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

You should read the following discussion and analysis of our financial condition and results of operations in conjunction with our condensed consolidated financial statements (unaudited) and related notes included in the section of this Quarterly Report on Form 10-Q, or this Quarterly Report, titled “Item 1—Financial Statements.” This Quarterly Report contains forward-looking statements that are based on management’s beliefs and assumptions and on information currently available to management. All statements other than statements of historical facts contained in this Quarterly Report are forward-looking statements. In some cases, you can identify forward-looking statements by the following words: “aim,” “anticipate,” “believe,” “can,” “continue,” “could,” “estimate,” “expect,” “goal,” “intend,” “may,” “ongoing,” “plan,” “potential,” “predict,” “project,” “seek,” “should,” “target,” “will,” “would,” or the negative of these terms or other similar expressions, although not all forward-looking statements contain these words. These forward-looking statements, include, but are not limited to, statements regarding: the initiation, timing, progress and results of our preclinical studies and clinical trials and our research and development programs; our ability to advance our drug candidates into, and successfully complete, clinical trials; our reliance on the success of our clinical-stage drug candidates; our plans, expected milestones and the timing or likelihood of regulatory filings and approvals; the commercialization of our drugs and drug candidates, if approved; our ability to further develop sales and marketing capabilities and launch new drugs, if approved; the pricing and reimbursement of our drugs and drug candidates, if approved; the implementation of our business model, strategic plans for our business, drugs, drug candidates and technology; the scope of protection we (or our licensors) are able to establish and maintain for intellectual property rights covering our drugs, drug candidates and technology; our ability to operate our business without infringing, misappropriating or otherwise violating the intellectual property rights and proprietary technology of third parties; costs associated with enforcing or defending against intellectual property infringement, misappropriation or violation, product liability and other claims; regulatory developments in the United States, China, the United Kingdom, the European Union and other jurisdictions; the accuracy of our estimates regarding expenses, revenues, capital requirements and our need for additional financing; the potential benefits of strategic collaboration and licensing agreements and our ability to enter into strategic arrangements; our ability to maintain and establish collaborations or licensing agreements; our reliance on third parties to conduct drug development, manufacturing and other services; our ability to manufacture and supply, or have manufactured and supplied, drug candidates for clinical development and drugs for commercial sale; the rate and degree of market access and acceptance and reimbursement for our drugs and drug candidates, if approved; developments relating to our competitors and industry, including competing therapies; the size of the potential markets for our drugs and drug candidates and our ability to serve those markets; our ability to effectively manage our growth; our ability to attract and retain qualified employees and key personnel; statements regarding future revenue, hiring plans, expenses, capital expenditures, capital requirements and share performance; the future trading price of our ADSs and ordinary shares, and impact of securities analysts’ reports on these prices; and other risks and uncertainties, including those listed under “Part II—Item 1A—Risk Factors” of this Quarterly Report. These statements involve risks, uncertainties and other factors that may cause actual results, levels of activity, performance or achievements to be materially different from the information expressed or implied by these forward-looking statements. Given these uncertainties, you should not place undue reliance on these forward-looking statements. Factors that may cause actual results to differ materially from current expectations include, among other things, those described in “Part II—Item 1A—Risk Factors” of this Quarterly Report. These forward-looking statements speak only as of the date hereof. Except as required by law, we assume no obligation to update or revise these forward-looking statements for any reason, even if new information becomes available in the future. Unless the context requires otherwise, in this Quarterly Report, the terms “BeiGene,” the “Company,” “we,” “us” and “our” refer to BeiGene, Ltd. and its subsidiaries, on a consolidated basis.

Overview

We are a commercial-stage biotechnology company focused on developing and commercializing innovative molecularly-targeted and immuno-oncology drugs for the treatment of cancer. Our internally-developed lead drug candidates are currently in late-stage clinical trials. These candidates are (1) zanubrutinib (BGB-3111), a potentially best-in-class investigational small molecule inhibitor of Bruton’s tyrosine kinase, or BTK, (2) tislelizumab (BGB-A317), an investigational humanized monoclonal antibody against the immune checkpoint receptor programmed cell death protein 1 (PD-1), and (3) pamiparib (BGB-290), an investigational small molecule inhibitor of the poly ADP-ribose polymerase 1 (PARP1) and PARP2 enzymes. All three of these drug candidates are currently in Phase 2 or 3 pivotal trials globally and/or in China, and we filed for regulatory approvals in China in 2018 for zanubrutinib in relapsed/refractory (R/R) mantle cell lymphoma (MCL) and in R/R chronic lymphocytic leukemia (CLL) or R/R small lymphocytic lymphoma (SLL); and for tislelizumab in R/R classical Hodgkin's Lymphoma (cHL). We also have additional drug candidates in earlier stage clinical development.

We started as a research and development company in Beijing in 2010, focusing on developing best-in-class oncology drugs. Over the last nine years, we have developed into a fully-integrated global biotechnology company with operations in China, the United States, Europe and Australia, including a more than 800-person global clinical development team running over 50 ongoing or planned clinical trials as of January 24, 2019. We also have a growing commercial team that is selling our

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existing in-licensed drugs in China and preparing for launches of our internally-developed drug candidates in China and the United States, as well as internal manufacturing capabilities in China that are operational or under construction for the clinical and commercial supply of our small molecule and biologic drug candidates.

Recent Developments

On April 9, 2019, we announced that we entered into a global co-development and collaboration agreement with BioAtla LLC for the development, manufacturing and commercialization of BioAtla's investigational CAB-CTLA-4 antibody (BA3071), whereby BioAtla will co-develop the CAB-CTLA-4 antibody to defined early clinical objectives and we will then lead the parties' joint efforts to develop the product candidate and be responsible for global regulatory filings and commercialization. Subject to the terms of the agreement, we will hold a co-exclusive license with BioAtla to develop and manufacture the product candidate globally and an exclusive license to commercialize the product candidate globally. We will be responsible for all costs of development, manufacturing and commercialization in Asia (excluding Japan), Australia and New Zealand, and the parties will share development and manufacturing costs and commercial profits and losses upon specified terms in the rest of the world. BioAtla received an upfront payment of $20 million, and will receive a milestone payment upon reaching the defined early clinical objectives. BioAtla is also eligible to receive development and commercial milestone payments plus potential royalties on product sales.

On March 6, 2019, we announced that we entered into a global research and development collaboration agreement with Ambrx, Inc. to leverage Ambrx's clinically validated drug discovery technology platforms with our expertise and resources to pursue the development and commercialization of next-generation biologics drugs. Subject to the terms of the agreement, Ambrx received an upfront payment of $10 million, and is eligible to receive additional upfront payments of up to $19 million if we elect to initiate additional programs. Ambrx is also eligible to receive potential development, regulatory, and commercial milestone payments, plus potential royalties on product sales. We will have worldwide rights to develop and commercialize any drug products resulting from the collaboration.

Components of Operating Results

Revenue

To date, our revenue has consisted of product sales revenue since September 2017 and upfront license fees and reimbursed research and development expenses from our strategic collaboration with Celgene for tislelizumab entered in 2017 and upfront license fees and milestone payments from a prior collaboration agreement with Merck KGaA, Darmstadt Germany. We do not expect to generate significant revenue from internally-developed drug candidates unless and until we successfully complete development and obtain regulatory approval for one or more of our drug candidates, which is subject to significant uncertainty.

Revenues from product sales are recognized when there is a transfer of control from the Company to the distributor. The Company determines transfer of control based on when the product is delivered, and title passes to the distributor. Revenues from product sales are recognized net of variable consideration resulting from rebate accruals and sales returns allowances. Provisions for estimated reductions to revenue are provided for in the same period the related sales are recorded and are based on the sales terms, historical experience and trend analysis. We expect revenue from product sales to increase in 2019 as we expand our efforts to promote and obtain reimbursement for ABRAXANE^® and REVLIMID^® and launch VIDAZA^® in China.

We also record revenue from our collaboration and license agreements with Celgene. Under this agreement, we have received an upfront payment related to the license fee which was recognized upon the delivery of the license right. Additionally, the reimbursement of remaining undelivered research and development services is recognized over the performance period of the collaboration arrangement. We will also receive research and development reimbursement revenue for the basket study trials that Celgene opts into. We consider milestone payments variable consideration and include them in the transaction price when a significant reversal of revenue recognized is not expected to occur. See Note 3 to our consolidated financial statements included in this Quarterly Report for a description of this agreement.

Expenses

Cost of Sales

Cost of sales includes the acquisition costs of our commercial products.

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Research and Development Expenses

Research and development expenses consist of the costs associated with our research and development activities, conducting preclinical studies and clinical trials and activities related to regulatory filings. Our research and development expenses consist of:

• expenses incurred under agreements with contract research organizations, or CROs, contract manufacturing organizations, and consultants that conduct and support clinical trials and preclinical studies;

• costs of comparator drugs in certain of our clinical trials;

• manufacturing costs related to pre-commercial activities;

• costs associated with preclinical activities and development activities;

• costs associated with regulatory operations;

• employee-related expenses, including salaries, benefits, travel and share-based compensation expense for research and development personnel;

• in-process research and development costs expensed as part of collaboration agreements entered into; and

• other expenses, which include direct and allocated expenses for rent and maintenance of facilities, insurance and other supplies used in research and development activities.

Our current research and development activities mainly relate to the clinical advancement of our internally-developed drug candidates:

• zanubrutinib, an investigational small molecule inhibitor of BTK;

• tislelizumab, an investigational humanized monoclonal antibody against PD‑1;

• pamiparib, an investigational small molecule inhibitor of PARP1 and PARP2;

• lifirafenib, a novel small molecule inhibitor of both the monomer and dimer forms of BRAF;

• BGB-A333, an investigational humanized monoclonal antibody against PD-L1; and

• BGB-A425, an investigational humanized monoclonal antibody against TIM-3.

Research and development activities also include costs associated with in-licensed drug candidates, including:

• sitravatinib, an investigational, spectrum-selective kinase inhibitor in clinical development by Mirati Therapeutics, Inc.; and

• ZW25 and ZW49, two bispecific antibody-based product candidates targeting HER2, under development by Zymeworks, Inc.

We expense research and development costs when we incur them. We record costs for certain development activities, such as clinical trials, based on an evaluation of the progress to completion of specific tasks using data such as subject enrollment, clinical site activations or information our vendors provide to us. We expense the manufacturing costs of our internally-developed products that are used in clinical trials as they are incurred, as research and development expense. We do not allocate employee-related costs, depreciation, rental and other indirect costs to specific research and development programs because these costs are deployed across multiple product programs under research and development and, as such, are separately classified as unallocated research and development expenses.

At this time, it is difficult to estimate or know for certain, the nature, timing and estimated costs of the efforts that will be necessary to complete the development of our internally-developed drug candidates. We are also unable to predict when, if ever, material net cash inflows will commence from sales of our internally-developed drug candidates. This is due to the numerous risks and uncertainties associated with developing such drug candidates, including the uncertainty of:

• successful enrollment in and completion of clinical trials;

• establishing an appropriate safety profile;

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• establishing commercial manufacturing capabilities or making arrangements with third-party manufacturers;

• receipt of marketing approvals from applicable regulatory authorities;

• successfully launching and commercializing our drug candidates, if and when approved, whether as monotherapies or in combination with our internally discovered drug candidates or third-party products;

• obtaining and maintaining patent and trade secret protection and regulatory exclusivity for our drug candidates;

• continued acceptable safety profiles of the products following approval;

• competition from competing products; and

• retention of key personnel.

A change in the outcome of any of these variables with respect to the development of any of our drug candidates would significantly change the costs, timing and viability associated with the development of that drug candidate.

Research and development activities are central to our business model. We expect research and development costs to increase significantly for the foreseeable future as our development programs progress, as we continue to support the clinical trials of our drug candidates as treatments for various cancers and as we move these drug candidates into additional clinical trials, including potential pivotal trials. There are numerous factors associated with the successful commercialization of any of our drug candidates, including future trial design and various regulatory requirements, many of which cannot be determined with accuracy at this time based on our stage of development. Additionally, future commercial and regulatory factors beyond our control may impact our clinical development and commercial programs and plans.

Selling, General and Administrative Expenses

Selling, general and administrative expenses consist primarily of product promotion costs, distribution costs, salaries and related benefit costs, including share-based compensation for selling, general and administrative personnel. Other selling, general and administrative expenses include professional fees for legal, consulting, auditing and tax services as well as other direct and allocated expenses for rent and maintenance of facilities, travel costs, insurance and other supplies used in selling, general and administrative activities. We anticipate that our selling, general and administrative expenses will increase in future periods to support planned increases in commercialization activities with respect to ABRAXANE^® (nanoparticle albumin–bound paclitaxel), REVLIMID^® (lenalidomide), and VIDAZA^® (azaciditine) in China and the preparation for launch and potential commercialization of our internally-developed drug candidates, if approved. We also expect selling, general and administrative expenses to increase in future periods to support our research and development efforts, including the continuation of the clinical trials of our drug candidates as treatments for various cancers and the initiation of clinical trials for potential new drug candidates. These cost increases will likely be due to increased promotional costs, increased headcount, increased share-based compensation expenses, expanded infrastructure and increased costs for insurance. We also anticipate increased legal, compliance, accounting, insurance and investor and public relations expenses associated with being a public company with our ADS and ordinary shares listed for trading on The NASDAQ Global Select Market and Hong Kong Stock Exchange, respectively.

Interest Income (Expense), Net

Interest Income

Interest income consists primarily of interest generated from our cash and short-term investments in money market funds, time deposits, U.S. Treasury securities and U.S. agency securities.

Interest Expense

Interest expense consists primarily of interest on our long-term bank loan and shareholder loan.

Other Income (Expense), Net

Other income (expense) consists primarily of government grants and subsidies received that involve no conditions or continuing performance obligations by us, realized and unrealized gains and losses related to changes in foreign currency exchange rates, and gain on the sale of investments.

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Results of Operations

The following table summarizes our results of operations for the three months ended March 31, 2019 and 2018:

	Three Months Ended
	March 31,						Change
	2019			2018			$			%
	(dollars in thousands)
Revenues
Product revenue, net	$	57,421		$	23,250		$	34,171		147	%
Collaboration revenue	20,412			9,294			11,118			120	%
Total revenues	77,833			32,544			45,289			139	%
Expenses
Cost of sales - product	(15,261		)	(4,550		)	(10,711		)	235	%
Research and development	(178,351		)	(109,700		)	(68,651		)	63	%
Selling, general and administrative	(57,645		)	(28,915		)	(28,730		)	99	%
Amortization of intangible assets	(331		)	(188		)	(143		)	76	%
Total expenses	(251,588		)	(143,353		)	(108,235		)	76	%
Loss from operations	(173,755		)	(110,809		)	(62,946		)	57	%
Interest income, net	4,477			1,552			2,925			188	%
Other income, net	1,728			729			999			137	%
Loss before income taxes	(167,550		)	(108,528		)	(59,022		)	54	%
Income tax (expense) benefit	(519		)	3,412			(3,931		)	(115	)%
Net loss	(168,069		)	(105,116		)	(62,953		)	60	%
Less: Net loss attributable to noncontrolling interest	(429		)	(520		)	91			(18	)%
Net loss attributable to BeiGene, Ltd.	$	(167,640	)	$	(104,596	)	$	(63,044	)	60	%

Comparison of the Three Months Ended March 31, 2019 and 2018

Revenue

Total revenue increased to $77.8 million for the three months ended March 31, 2019, from $32.5 million for the three months ended March 31, 2018. The following table summarizes the components of revenue for the three months ended March 31, 2019 and 2018, respectively:

	Three Months Ended
	March 31,				Changes
	2019		2018		$		%
	(dollars in thousands)
Product revenue	$	57,421	$	23,250	$	34,171	147	%
Collaboration revenue:
Reimbursement of research and development costs	18,174		7,555		10,619		141	%
Research and development service revenue	2,238		1,739		499		29	%
Total	$	77,833	$	32,544	$	45,289	139	%

Net product revenue was $57.4 million for the three months ended March 31, 2019, which related to sales of ABRAXANE^®, REVLIMID^® and VIDAZA^® in China. We began recognizing product revenue with sales to our distributors in China in September 2017 following the closing of our strategic collaboration with Celgene. VIDAZA^®was launched in China in February 2018. We had $23.3 million product revenue for the three months ended March 31, 2018.

Collaboration revenue totaled $20.4 million for the three months ended March 31, 2019, and was comprised of $18.2 million for the reimbursement of research and development costs for the clinical trials that Celgene has opted into and $2.2 million related to the recognition of deferred revenue for upfront fees allocated to undelivered research and development services to Celgene.

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Cost of Sales

Cost of sales increased to $15.3 million for the three months ended March 31, 2019 from $4.6 million for the three months ended March 31, 2018. Cost of sales for the three months ended March 31, 2019 consisted entirely of the cost of products purchased from Celgene and distributed in the People's Republic of China, or PRC.

Research and Development Expense

Research and development expense increased by $68.7 million, or 62.6%, to $178.4 million for the three months ended March 31, 2019 from $109.7 million for the three months ended March 31, 2018. The following table summarizes external clinical, external non-clinical and internal research and development expense for the three months ended March 31, 2019 and 2018, respectively:

	Three Months Ended
	March 31,				Changes
	2019		2018		$		%
	(dollars in thousands)
External cost of clinical-stage programs	$	78,701	$	43,169	$	35,532	82	%
In-process research and development expense	10,000		10,000		—		—	%
External cost of non-clinical-stage programs	10,057		9,786		271		3	%
Internal research and development expenses	79,593		46,745		32,848		70	%
Total research and development expenses	$	178,351	$	109,700	$	68,651	63	%

The increase in external research and development expense was primarily attributable to the advancement of our clinical drug candidates, and included the following:

• Increases of approximately $10.8 million, $25.2 million, and $1.0 million, respectively, for zanubrutinib, tislelizumab, and lifirafenib, partially offset by a decrease of approximately $1.5 million for pamiparib. The expense increases were primarily due to the expansion of clinical trials for these candidates, including the initiation or continuation of pivotal trials.

• Increase of approximately $0.3 million in external spending for our non-clinical-stage programs, primarily related to manufacturing costs for pre-commercial activities and costs associated with our preclinical candidates.

The increase in internal research and development expense was primarily attributable to the expansion of our global development organization and our clinical and preclinical drug candidates, and included the following:

• $18.9 million increase of employee salary and benefits, which was primarily attributable to hiring more research and development personnel to support our expanding research and development activities;

• $3.7 million increase of share-based compensation expense, primarily attributable to our increased headcount, resulting in more awards being expensed;

• $2.1 million increase of consulting fees, which was mainly attributable to increased scientific, regulatory and development consulting activities, in connection with the advancement of our drug candidates; and

• $8.2 million increase of facilities, office expense, rental fee and other expenses to support the growth of our organization.

Selling, General and Administrative Expense

Selling, general and administrative expense increased by $28.7 million, or 99.4%, to $57.6 million for the three months ended March 31, 2019, from $28.9 million for the three months ended March 31, 2018. The increase was primarily attributable to the following:

• $13.1 million increase of employee salary and benefits, which was primarily attributable to the hiring of more personnel to support our growing organization, including the expansion of our commercial organization in China;

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• $5.3 million increase of share-based compensation expense, primarily attributable to our increased headcount, resulting in more awards being expensed; and

• $10.3 million increase of selling, facility, conference fees, travel expenses, rental fees and other administrative expenses, primarily attributable to the global expansion of our business, including the post-combination cost and expansion of our commercial operations in China.

Interest Income, Net

Interest income, net increased by $2.9 million, or 188.5%, to $4.5 million for the three months ended March 31, 2019, from $1.6 million for three months ended March 31, 2018. The increase in interest income was primarily attributable to interest income on our larger cash and short-term investment balances exceeding interest expense on our long-term debt.

Other Income, Net

Other income, net increased to $1.7 million for the three months ended March 31, 2019, from $0.7 million for the three months ended March 31, 2018. The increase was mainly attributable to the gain on sales of available-for-sale securities.

Income Tax (Expense) Benefit 

Income tax expense was $0.5 million for the three months ended March 31, 2019, as compared to an income tax benefit of $3.4 million for the three months ended March 31, 2018. The income tax expense for the three months ended March 31, 2019 was primarily attributable to increased income reported in the U.S. and certain China subsidiaries, and a reduction to discrete tax benefit on employee stock option exercises, offset by increased tax benefits of U.S. research and development tax credits and other special tax deductions.

Liquidity and Capital Resources

Since inception, we have incurred annual net losses and negative cash flows from our operations. Substantially all of our losses have resulted from the funding of our research and development programs and selling, general and administrative expenses associated with our operations. We incurred net losses of $168.1 million and $105.1 million for the three months ended March 31, 2019 and 2018, respectively. As of March 31, 2019, we had an accumulated deficit of $1.2 billion. Our primary use of cash is to fund our research and development activities and to support the commercialization of our products in China and planned product launches in China and the United States. Our operating activities used$172.0 million and $104.5 million during the three months ended March 31, 2019 and 2018, respectively. We have financed our operations principally through proceeds from public and private offerings of our securities, proceeds from our collaboration agreements, and sales of ABRAXANE^®, REVLIMID^® and VIDAZA^® in China since September 2017.

As of March 31, 2019, we had cash, cash equivalents, restricted cash, and short-term investments of $1.6 billion, including approximately $143.3 million of cash, cash equivalents and restricted cash held by our joint venture, BeiGene Biologics, to build a commercial biologics facility in Guangzhou, China and to fund research and development of biologics drug candidates in China. Restricted cash of $23.9 million represents secured deposits of BeiGene Guangzhou Factory held in designated bank accounts for the issuance of a letter of credit and restricted cash deposits as security for a long-term bank loan.

The following table provides information regarding our cash flows for the three months ended March 31, 2019 and 2018:

	Three Months Ended March 31,
	2019			2018
	(in thousands)
Cash, cash equivalents and restricted cash at beginning of period	$	740,713		$	239,602
Net cash used in operating activities	(171,975		)	(104,501		)
Net cash provided by (used in) investing activities	172,416			(394,352		)
Net cash provided by financing activities	42,964			763,901
Net effect of foreign exchange rate changes	4,265			3,444
Net increase in cash, cash equivalents, and restricted cash	47,670			268,492
Cash, cash equivalents and restricted cash at end of period	$	788,383		$	508,094

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Use of Funds

The use of cash in all periods presented resulted primarily from our net losses, adjusted for non-cash charges and changes in components of working capital. The primary use of our cash, cash equivalents and short-term investments in all periods presented was to fund research and development, regulatory and other clinical trial costs, selling costs and related supporting administrative expenses. Our prepaid expenses and other current assets, accounts payable and accrued expense balances in all periods presented were affected by the timing of vendor invoicing and payments.

Operating Activities

Operating activities used$172.0 million of cash in the three months ended March 31, 2019, which resulted principally from our net loss of $168.1 million and an increase in our net operating assets and liabilities of $60.4 million, offset by non-cash charges of $56.5 million related primarily to stock-based compensation expense, depreciation and amortization and other non-cash charges. The increase in our net operating assets and liabilities was primarily due to an increase of $17.9 million related to collections on product sales from our collaboration with Celgene, a decrease of $29.2 million in accounts payable and accrued expenses related to payments for external research and development costs, an increase of $10.2 million in other non-current assets primarily related to rental deposit payments, an increase of $8.3 million in prepaid expenses and other current assets primarily related to prepayments to CROs for clinical trials, and a decrease of $2.2 million in deferred revenue, all of which had a negative impact on operating cash flow. These cash uses were partially offset by a decrease of $3.1 million in inventories, a decrease of $2.5 million in unbilled receivables related to the Celgene collaboration, an increase of $1.0 million in taxes payable, and an increase of $0.9 million in other long-term liabilities, all of which had a positive impact on operating cash flows. Our non-cash charges and other adjustments to our net loss during the three months ended March 31, 2019 primarily consisted of $26.4 million of share-based compensation expense, $29.0 million of acquired in-process research and development related to our license agreement with Ambrx Inc. and termination of the collaboration agreement with Merck KGaA, Darmstadt Germany, $3.4 million of depreciation and amortization expense, and $1.9 million of non-cash interest expense, offset by $2.4 million of bond discount amortization, $1.0 million related to deferred tax benefits, and $0.8 million of disposal gain on available-for-sale securities.

Operating activities used $104.5 million of cash in the three months ended March 31, 2018, which resulted principally from our net loss of $105.1 million and an increase in our net operating assets and liabilities of $26.5 million, offset by non-cash charges of $27.1 million. The overall increase in our net operating assets was primarily due to an increase in unbilled receivables of $7.6 million related to the Celgene collaboration, an increase of $13.8 million in prepaid expenses and other current assets primarily related to prepayments to CROs for clinical trials, an increase of $2.1 million in other non-current assets primarily related to rental deposits and other, a decrease of $12.4 million in accounts payable and accrued expenses related to payments for external research and development costs, payroll-related costs and selling, general and administrative expenses to support our growing business, offset by an decrease in accounts receivable of $5.9 million related to collections on product sales from our collaboration with Celgene, and a decrease of $3.4 million in inventories. Our non-cash charges and other adjustments to our net loss during the three months ended March 31, 2018 primarily consisted of $17.4 million of share-based compensation expense, $10.0 million of acquired in-process research and development related to the license agreement with Mirati, $2.0 million of non-cash interest expense and $2.2 million of depreciation expense, offset by $4.1 million related to deferred tax benefits.

Investing Activities

Investing activities provided$172.4 million of cash in the three months ended March 31, 2019, consisting of sales and maturities of investment securities of $710.6 million, which was offset by $487.4 million in purchases of investment securities, $29.0 million of acquired in-process research and development related to the license agreement with Ambrx and termination of the collaboration agreement with Merck KGaA, Darmstadt Germany, and capital expenditures of $21.8 million primarily related to our Guangzhou and Suzhou manufacturing facilities.

Investing activities used $394.4 million of cash in the three months ended March 31, 2018, which consisted of purchases of investment securities of $632.2 million, a purchase of $10.0 million of in-process research and development related to the license agreement with Mirati and capital expenditures of $9.7 million primarily related to our Guangzhou and Suzhou manufacturing facilities, offset by sales and maturities of investment securities of $257.6 million.

Financing Activities

Financing activities provided $43.0 million of cash in the three months ended March 31, 2019, consisting of $36.7 million from a long-term bank loan to fund our Guangzhou manufacturing facility, and $6.3 million from the exercise of employee share options.

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Financing activities provided $763.9 million of cash in the three months ended March 31, 2018, which consisted of $758.0 million of proceeds, net of underwriter discounts, from our follow-on public offering of ADSs and $6.3 million from the exercise of employee stock options, offset by the payment of $0.4 million of follow-on public offering costs.

Operating Capital Requirements

We do not expect to generate significant revenue from product sales of our internally developed drug candidates unless and until we obtain regulatory approval for and commercialize one of our current or future drug candidates. We have exclusive rights to distribute and promote Celgene’s approved cancer therapies in China, for which we began recognizing revenue in the third quarter of 2017. We anticipate that we will continue to generate losses for the foreseeable future, and we expect our losses to increase as we continue the development of, and seek regulatory approvals for, our drug candidates, and prepare for commercialization and begin to commercialize any approved products. As a growing public company, we will continue to incur additional costs associated with our operations. In addition, we expect to incur significant commercialization expenses for product sales, marketing and manufacturing of our in-licensed drug products in China and, subject to obtaining regulatory approval, our drug candidates. Accordingly, we anticipate that we will need substantial additional funding prior to generating sufficient cash from operations to fund our continuing operations.

Based on our current operating plan, we expect that our existing cash, cash equivalents and short-term investments as of March 31, 2019, will enable us to fund our operating expenses and capital expenditures requirements for at least the next 12 months after the date that the financial statements included in this report are issued. We expect that our expenses will continue to increase substantially as we fund our ongoing research and clinical development efforts, including our ongoing and planned pivotal trials for zanubrutinib, tislelizumab and pamiparib, both in China and globally; our other ongoing and planned clinical trials; regulatory filing and registration of our late-stage drug candidates; expansion of commercial operations in China and preparation for launch of our drug candidates globally; business development and manufacturing activities; and working capital and other general corporate purposes. We have based our estimates on assumptions that may prove to be wrong, and we may use our available capital resources sooner than we currently expect. Because of the numerous risks and uncertainties associated with the development and commercialization of our drugs and drug candidates, we are unable to estimate the amounts of increased capital outlays and operating expenditures necessary to complete the development and commercialization of our drug candidates.

Our future capital requirements will depend on many factors, including:

• the costs, timing and outcome of regulatory reviews and approvals;

• the ability of our drug candidates to progress through clinical development successfully;

• the initiation, progress, timing, costs and results of nonclinical studies and clinical trials for our other programs and potential drug candidates;

• the number and characteristics of the drug candidates we pursue;

• the costs of establishing commercial manufacturing capabilities or securing necessary supplies from third-party manufacturers;

• the costs of preparing, filing and prosecuting patent applications, maintaining and enforcing our intellectual property rights and defending intellectual property-related claims;

• the costs of establishing and expanding our commercial operations and the success of those operations;

• the extent to which we acquire or in-license other products and technologies; and

• our ability to maintain and establish collaboration arrangements on favorable terms, if at all.

Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs through a combination of equity offerings, debt financings, collaboration agreements, strategic alliances, licensing arrangements, government grants and other available sources. Under SEC rules, we currently qualify as a “well-known seasoned issuer,” which allows us to file shelf registration statements to register an unspecified amount of securities that are effective upon filing. On May 26, 2017, we filed such a shelf registration statement with the SEC for the issuance of an unspecified amount of ordinary shares (including in the form of ADSs), preferred shares, various series of debt securities and/or warrants to purchase any of such securities, either individually or in units, from time to time at prices and on terms to be determined at the time of any such offering. This registration statement was effective upon filing and will remain in effect for up to three years from filing. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership

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interest of our shareholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect your rights as a holder of ADSs or ordinary shares. Debt financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends and may require the issuance of warrants, which could potentially dilute your ownership interest. If we raise additional funds through collaboration agreements, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams or research programs or to grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings, collaborations or other sources when needed, we may be required to delay, limit, reduce or terminate our product development or commercialization efforts or grant rights to develop and market products or drug candidates that we would otherwise prefer to develop and market ourselves.

Contractual Obligations and Commitments

The following table summarizes our significant contractual obligations as of the payment due date by period at March 31, 2019:

	Payments Due by Period
			Less Than						More Than
	Total		1 Year		1–3 Years		3–5 Years		5 Years
	(in thousands)
Contractual obligations
Operating lease commitments	$	33,103	$	8,675	$	18,706	$	5,618	$	104
Purchase commitments	56,135		56,135		—		—		—
Debt obligations	241,594		8,940		267		162,922		69,465
Capital commitments	26,647		26,647		—		—		—
Total	$	357,479	$	100,397	$	18,973	$	168,540	$	69,569

Operating Lease Commitments

We lease office or manufacturing facilities in Beijing, Shanghai, Suzhou and Guangzhou, PRC and office facilities in the United States in California, Massachusetts and New Jersey under non-cancelable operating leases expiring on different dates. Payments under operating leases are expensed on a straight-line basis over the periods of the respective leases. The aggregate future minimum payments under these non-cancelable operating leases are summarized in the table above.

Debt Obligations

Long-term Bank Loans

On September 2, 2015, BeiGene (Suzhou) entered into a loan agreement with Suzhou Industrial Park Biotech Development Co., Ltd. and China Construction Bank, to borrow RMB120.0 million at a 7% fixed annual interest rate. The loan is secured by BeiGene (Suzhou)’s equipment and our rights to a PRC patent on a drug candidate. In September 2018, we repaid the first tranche of $8.7 million (RMB60.0 million). The remaining $8.9 million (RMB60.0 million) is due on September 30, 2019.

On April 4, 2018, BeiGene Guangzhou Factory entered into a nine-year loan agreement with China Construction Bank to borrow RMB580.0 million at a floating interest rate benchmarking RMB loans interest rate of financial institutions in PRC. The loan is secured by BeiGene Guangzhou Factory’s land use right. Interest expense will be paid quarterly until the loan is fully settled. As of March 31, 2019, we have drawn down $77.5 million (RMB520.0 million) in aggregate principal amount of this loan. Maturity dates range from 2021 to 2027.

Shareholder Loan

On March 7, 2017, BeiGene Biologics entered into a Shareholder Loan Contract with GET, pursuant to which, GET provided a shareholder loan to BeiGene Biologics in the principal amount of RMB900.0 million at a fixed 8% annual interest rate. The term of the shareholder loan is 72 months, commencing from the actual drawdown date of April 14, 2017 and ending on April 13, 2023, unless converted earlier. On April 14, 2017, we drew down the entire RMB900.0 million from GET.

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Capital Commitments

We had capital commitments amounting to $26.6 million for the acquisition of property, plant and equipment as of March 31, 2019, which was primarily for BeiGene Guangzhou Factory’s manufacturing facility in Guangzhou, China.

Purchase Commitments

As of March 31, 2019, purchase commitments amounted to $56.1 million related to minimum purchase requirements for finished goods inventory purchased from Celgene.

Other Business Agreements

We enter into agreements in the normal course of business with CROs and institutions to license intellectual property. We have not included these future payments in the table of contractual obligations above since the contracts are cancelable at any time by us with prior written notice or the licensing fees are currently not determinable.

Off-Balance Sheet Arrangements

We did not have during the periods presented, and we do not currently have, any off-balance sheet arrangements, as defined under SEC rules, such as relationships with unconsolidated entities or financial partnerships, which are often referred to as structured finance or special purpose entities, established for the purpose of facilitating financing transactions that are not required to be reflected on our balance sheets.

Critical Accounting Policies and Significant Judgments and Estimates

Our discussion and analysis of our financial condition and results of operations is based on our financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America, or GAAP. The preparation of these financial statements requires us to make estimates, assumptions and judgments that affect the reported amounts of assets, liabilities, revenues, costs and expenses. We evaluate our estimates and judgments on an ongoing basis, and our actual results may differ from these estimates. These include, but are not limited to, estimating the useful lives of long-lived assets, estimating variable consideration in product sales and collaboration revenue arrangements, estimating the incremental borrowing rate for operating lease liabilities, identifying separate accounting units and the standalone selling price of each performance obligation in the Company's revenue arrangements, assessing the impairment of long-lived assets, share-based compensation expenses, realizability of deferred tax assets and the fair value of financial instruments. We base our estimates on historical experience, known trends and events, contractual milestones and other various factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Our actual results may differ from these estimates under different assumptions or conditions.

There have been no material changes to our critical accounting policies as of and for the three months ended March 31, 2019, as compared to those described in the section titled “Part II—Item 7—Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in our Annual Report.

For new accounting policies adopted during the three months ended March 31, 2019 , see “Part I—Item 1. Financial Statements—Notes to the Condensed Consolidated Financial Statements—1. Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies—Significant accounting policies” in this Quarterly Report on Form 10-Q.

Recent Accounting Pronouncements

See Note 1 to our condensed consolidated financial statements included in this Quarterly Report on Form 10-Q for information regarding recent accounting pronouncements.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Interest and Credit Risk

Financial instruments that are potentially subject to credit risk consist of cash, cash equivalents, restricted cash and short-term investments. The carrying amounts of cash, cash equivalents, restricted cash and short-term investments represent the maximum amount of loss due to credit risk. We had cash and cash equivalents of $764.5 million and $712.9 million, restricted cash of $23.9 million and $27.8 million, and short-term investments of $849.2 million and $1.1 billion at March 31, 2019 and December 31, 2018, respectively. At March 31, 2019, our cash and cash equivalents were deposited with various major reputable financial institutions located within and without the PRC. The deposits placed with these financial institutions are not

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protected by statutory or commercial insurance. In the event of bankruptcy of one of these financial institutions, we may be unlikely to claim our deposits back in full. We believe that these financial institutions are of high credit quality, and we continually monitor the credit worthiness of these financial institutions. Restricted cash represents secured deposits held in designated bank accounts for issuance of letters of credit and restricted cash deposits as security for a long-term bank loan. At March 31, 2019, our short-term investments consisted primarily of U.S. treasury securities and U.S. agency securities. We believe that the U.S. treasury securities are of high credit quality and continually monitor the credit worthiness of these institutions.

The primary objectives of our investment activities are to preserve principal, provide liquidity and maximize income without significantly increasing risk. Our primary exposure to market risk relates to fluctuations in the interest rates which are affected by changes in the general level of PRC and U.S. interest rates. Given the short-term nature of our cash equivalents and short-term investments, we believe that a sudden change in market interest rates would not be expected to have a material impact on our financial condition and/or results of operation. We estimate that a hypothetical 100-basis point change in market interest rates would impact the fair value of our investment portfolio as of March 31, 2019 by $2.9 million.

We do not believe that our cash, cash equivalents, restricted cash and short-term investments have significant risk of default or illiquidity. While we believe that our cash, cash equivalents, restricted cash and short-term investments do not contain excessive risk, we cannot provide absolute assurance that in the future our investments will not be subject to adverse changes in market value.

Foreign Currency Exchange Rate Risk

We are exposed to foreign exchange risk arising from various currency exposures. Our functional currency is the U.S. dollar, but a portion of our operating transactions and assets and liabilities are in other currencies, such as RMB, Australian dollar. Swiss franc, Euro and Hong Kong dollars. To date, we have not extensively used derivative financial instruments to hedge exposure to such risk, although we may adopt hedging strategies in the future.

RMB is not freely convertible into foreign currencies for capital account transactions. The value of RMB against the U.S. dollar and other currencies is affected by, among other things, changes in China’s political and economic conditions and China’s foreign exchange prices. Since July 21, 2005, the RMB is permitted to fluctuate within a narrow and managed band against a basket of certain foreign currencies. For the RMB against U.S. dollars, there was appreciation of approximately 2.4% in the three months ended March 31, 2019 and depreciation of approximately 5.7% in the year ended December 31, 2018, respectively. It is difficult to predict how market forces or PRC or U.S. government policy may impact the exchange rate between the RMB and the U.S. dollar in the future.

To the extent that we need to convert U.S. dollars into RMB for capital expenditures and working capital and other business purposes, appreciation of RMB against the U.S. dollar would have an adverse effect on the RMB amount we would receive from the conversion. Conversely, if we decide to convert RMB into U.S. dollars for the purpose of making payments for dividends on our ordinary shares, strategic acquisitions or investments or other business purposes, appreciation of the U.S. dollar against RMB would have a negative effect on the U.S. dollar amount available to us.

In addition, a significant depreciation of the RMB against the U.S. dollar may significantly reduce the U.S. dollar equivalent of our receivables, earnings or losses.

Currency Convertibility Risk

A majority of our expenses and a significant portion of our assets and liabilities are denominated in RMB. On January 1, 1994, the PRC government abolished the dual rate system and introduced a single rate of exchange as quoted daily by the People’s Bank of China, or PBOC. However, the unification of exchange rates does not imply that the RMB may be readily convertible into U.S. dollars or other foreign currencies. All foreign exchange transactions continue to take place either through the PBOC or other banks authorized to buy and sell foreign currencies at the exchange rates quoted by the PBOC. Approvals of foreign currency payments by the PBOC or other institutions require submitting a payment application form together with suppliers’ invoices, shipping documents and signed contracts.

Additionally, the value of the RMB is subject to changes in central government policies and international economic and political developments affecting supply and demand in the PRC foreign exchange trading system market.

Effects of Inflation

Inflation generally affects us by increasing our cost of labor and clinical trial costs. We do not believe that inflation has had a material effect on our results of operations during the three months ended March 31, 2019.

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Item 4. Controls and Procedures.

Evaluation of Disclosure Controls and Procedures

Based on their evaluation, required by paragraph (b) of Rules 13a-15 or 15d-15, promulgated under the Securities Exchange Act of 1934, as amended, or the Exchange Act, our principal executive officer and principal financial officer have concluded that our disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act are effective, at a reasonable assurance level, as of March 31, 2019, to ensure that information required to be disclosed in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in U.S. Securities and Exchange Commission rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is accumulated and communicated to our management, including our principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, our management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurances of achieving the desired control objectives, and management necessarily was required to apply its judgment in designing and evaluating the controls and procedures.

Changes in Internal Control over Financial Reporting

In the quarter ended March 31, 2019, we completed our implementation of a company-wide enterprise resource planning (ERP) system. We have assessed and continue to monitor the impact of this implementation on our processes and procedures. Where appropriate, we have made changes to our internal controls to address system changes and maintain effective controls over financial reporting.

With the exception of the ERP implementation, there were no other changes in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a‑15(d) and 15d‑15(d) of the Exchange Act that occurred during the three months ended March 31, 2019 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings.

From time to time we may become involved in legal proceedings or be subject to claims arising in the ordinary course of our business. We are not presently a party to any legal proceedings that we believe, if determined adversely to us, would individually or taken together have a material adverse effect on our business, results of operations, financial condition or cash flows. Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors.

Item 1A. Risk Factors.

The following section includes the most significant factors that we believe may adversely affect our business and operations. You should carefully consider the risks and uncertainties described below and all information contained in this Quarterly Report, including our financial statements and the related notes and “Part I—Item 2—Management’s Discussion and Analysis of Financial Condition and Results of Operations,” before deciding to invest in our ADSs or ordinary shares. The occurrence of any of the events or developments described below could harm our business, financial condition, results of operations and growth prospects. In such an event, the market price of our ADSs and ordinary shares could decline, and you may lose all or part of your investment. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may impair our business operations.

The risk factors denoted with a "*", if any, are newly added or have been materially updated from our Annual Report.

Risks Related to Clinical Development and Regulatory Approval of Our Drug Candidates

We depend substantially on the success of our drug candidates, which are in clinical development. If we are unable to successfully complete clinical development, obtain regulatory approval and commercialize our drug candidates, or experience significant delays in doing so, our business will be materially harmed.

Our business will depend on the successful development, regulatory approval and commercialization of our drug candidates for the treatment of patients with cancer, which are still in clinical development, and other drug candidates we may develop. We have invested a significant portion of our efforts and financial resources in the development of our existing drug candidates. The success of our drug candidates will depend on several factors, including:

• successful enrollment in, and completion of, clinical trials, as well as completion of preclinical studies;

• favorable safety and efficacy data from our clinical trials and other studies;

• receipt of regulatory approvals;

• establishing commercial manufacturing capabilities, either by building facilities ourselves or making arrangements with third-party manufacturers;

• the performance by contract research organizations, or CROs, or other third parties we may retain of their duties to us in a manner that complies with our protocols and applicable laws and that protects the integrity of the resulting data;

• obtaining and maintaining patent, trade secret and other intellectual property protection and regulatory exclusivity;

• ensuring we do not infringe, misappropriate or otherwise violate the patent, trade secret or other intellectual property rights of third parties;

• successfully launching our drug candidates, if and when approved;

• obtaining favorable reimbursement from third-party payors for drugs, if and when approved;

• competition with other products;

• continued acceptable safety profile following regulatory approval; and

• manufacturing or obtaining sufficient supplies of our drugs, drug candidates and any competitor drug products that may be necessary for use in clinical trials for evaluation of our drug candidates and commercialization of our drugs.

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If we do not achieve one or more of these factors in a timely manner or at all, we could experience significant delays in our ability or be unable to obtain approval for and/or to successfully commercialize our drugs and drug candidates, which would materially harm our business and we may not be able to generate sufficient revenues and cash flows to continue our operations.

If we encounter difficulties enrolling patients in our clinical trials, our clinical development activities could be delayed or otherwise adversely affected.

The timely completion of clinical trials in accordance with their protocols depends, among other things, on our ability to enroll a sufficient number of patients who remain in the trial until its conclusion. We may experience difficulties in patient enrollment in our clinical trials for a variety of reasons, including the size and nature of the patient population and the patient eligibility criteria defined in the protocol.

Our clinical trials will likely compete with other clinical trials for drug candidates that are in the same therapeutic areas as our drug candidates, and this competition will reduce the number and types of patients available to us, because some patients who might have opted to enroll in our trials may instead opt to enroll in a trial being conducted by one of our competitors. Because the number of qualified clinical investigators and clinical trial sites is limited, we expect to conduct some of our clinical trials at the same clinical trial sites that some of our competitors use, which will reduce the number of patients who are available for our clinical trials at such clinical trial sites. Even if we are able to enroll a sufficient number of patients in our clinical trials, delays in patient enrollment may result in increased costs or may affect the timing or outcome of the planned clinical trials, which could prevent completion of these trials and adversely affect our ability to advance the development of our drug candidates.

Clinical drug development involves a lengthy and expensive process with an uncertain outcome, and results of earlier studies and trials may not be predictive of future trial results.

Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. Failure can occur at any time during the clinical trial process. The results of preclinical studies and early clinical trials of our drug candidates may not be predictive of the results of later-stage clinical trials, and initial or interim results of a trial may not be predictive of the final results. Drug candidates in later stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed through preclinical studies and initial clinical trials. In some instances, there can be significant variability in safety and/or efficacy results between different trials of the same drug candidate due to numerous factors, including changes in trial procedures set forth in protocols, differences in the size and type of the patient populations, including genetic differences, patient adherence to the dosing regimen and other trial protocol elements and the rate of dropout among clinical trial participants. In the case of any trials we conduct, results may differ from earlier trials due to the larger number of clinical trial sites and additional countries and languages involved in such trials. A number of companies in the pharmaceutical and biotechnology industries have suffered significant setbacks in advanced clinical trials due to lack of efficacy or adverse safety profiles, notwithstanding promising results in earlier trials. Our future clinical trial results may not be favorable.

Even if our future clinical trial results show favorable efficacy and impressive durability of antitumor responses, not all patients may benefit. For certain drugs, including checkpoint inhibitors, and in certain indications, it is likely that the majority of patients may not respond to the agents at all, some responders may relapse after a period of response and certain tumor types may appear particularly resistant.

If clinical trials of our drug candidates fail to demonstrate safety and efficacy to the satisfaction of regulatory authorities or do not otherwise produce positive results, we may incur additional costs or experience delays in completing, or ultimately be unable to complete, the development and commercialization of our drug candidates.

Before obtaining regulatory approval for the sale of our drug candidates, we must conduct extensive clinical trials to demonstrate the safety and efficacy of our drug candidates in humans. We may experience numerous unexpected events during, or as a result of, clinical trials that could delay or prevent our ability to receive regulatory approval or commercialize our drug candidates, including but not limited to: regulators, institutional review boards, or IRBs, or ethics committees may not authorize us or our investigators to commence a clinical trial or conduct a clinical trial at a prospective trial site; our inability to reach agreements on acceptable terms with prospective CROs and trial sites, the terms of which can be subject to extensive negotiation and may vary significantly among different CROs and trial sites; manufacturing issues, including problems with manufacturing, supply quality, compliance with current good manufacturing practice, or GMP, or obtaining sufficient quantities of a drug candidate for use in a clinical trial or for commercialization; clinical trials of our drug candidates may produce negative or inconclusive results, and we may decide, or regulators may require us, to conduct additional clinical trials or abandon drug development programs; the number of patients required for clinical trials of our drug candidates may be larger than we anticipate, enrollment may be insufficient or slower than we anticipate or patients may drop out at a higher rate than we anticipate; our third-party contractors, including clinical investigators, may fail to comply with regulatory requirements or meet their contractual obligations to us in a timely manner, or at all; we might have to suspend or terminate clinical trials of our

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drug candidates for various reasons, including a finding of a lack of clinical response or other unexpected characteristics or a finding that participants are being exposed to unacceptable health risks; regulators, IRBs or ethics committees may require that we or our investigators suspend or terminate clinical research or not rely on the results of clinical research for various reasons, including noncompliance with regulatory requirements; the cost of clinical trials of our drug candidates may be greater than we anticipate; and the supply or quality of our drugs and drug candidates, companion diagnostics or other materials necessary to conduct clinical trials of our drug candidates or commercialization of our drugs may be insufficient or inadequate.

If we are required to conduct additional clinical trials or other testing of our drug candidates beyond those that we currently contemplate, if we are unable to successfully complete clinical trials of our drug candidates or other testing, if the results of these trials or tests are not positive or are only modestly positive or if they raise safety concerns, we may:

• be delayed in obtaining regulatory approval for our drug candidates;

• not obtain regulatory approval at all;

• obtain approval for indications that are not as broad as intended;

• have the drug removed from the market after obtaining regulatory approval;

• be subject to additional post-marketing testing requirements;

• be subject to warning labels or restrictions on how the drug is distributed or used; or

• be unable to obtain reimbursement for use of the drug.

Significant clinical trial, manufacturing or regulatory delays may also increase our development costs and could shorten any periods during which we have the exclusive right to commercialize our drug candidates or allow our competitors to bring drugs to market before we do. This could impair our ability to commercialize our drug candidates and may harm our business and results of operations.

Risks Related to Extensive Government Regulation

All material aspects of the research, development, manufacturing and commercialization of pharmaceutical products are heavily regulated.

All jurisdictions in which we conduct or intend to conduct our pharmaceutical-industry activities regulate these activities in great depth and detail. We initially intend to focus our activities in the major markets of the United States, China and other Asian countries, and the European Union. These geopolitical areas all strictly regulate the pharmaceutical industry, and in doing so they employ broadly similar regulatory strategies, including regulation of product development and approval, manufacturing, and marketing, sales and distribution of products. However, there are differences in the regulatory regimes - some minor, some significant - that make for a more complex and costly regulatory compliance burden for a company like ours that plans to operate in each of these regions.

The process of obtaining regulatory approvals and compliance with appropriate laws and regulations require the expenditure of substantial time and financial resources. Failure to comply with the applicable requirements at any time during the product development process, approval process, or after approval, may subject an applicant to administrative or judicial sanctions. These sanctions could include a regulator’s refusal to approve pending applications, withdrawal of an approval, license revocation, a clinical hold, voluntary or mandatory product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines, refusals of government contracts, restitution, disgorgement or civil or criminal penalties. The failure to comply with these regulations could have a material adverse effect on our business. For example, although we received a Breakthrough Therapy designation for zanubrutinib for the treatment of adult patients with mantle cell lymphoma (MCL) who have received at least one prior therapy in January 2019, the U.S. Food and Drug Administration, or FDA, may later decide that such drug candidate no longer meets the conditions for qualification and may rescind such designation. In any event, the receipt of a Breakthrough Therapy designation for a drug candidate may not result in a faster development process, review or approval compared to drugs considered for approval under conventional FDA procedures and does not assure ultimate approval by the FDA.

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The regulatory approval processes of the regulatory authorities in the United States, China, Europe and other comparable regulatory authorities are lengthy, time consuming and inherently unpredictable. If we are ultimately unable to obtain regulatory approval for our drug candidates, our business will be substantially harmed.

The time required to obtain approval by the FDA, the National Medical Products Administration of China, or NMPA (formerly known as the China Food and Drug Administration or China Drug Administration), the European Medicines Agency, or EMA, and other comparable regulatory authorities is unpredictable and typically takes many years following the commencement of preclinical studies and clinical trials and depends on numerous factors, including the substantial discretion of the regulatory authorities.

Our drug candidates could be delayed or fail to receive regulatory approval for many reasons, including:

• failure to begin or complete clinical trials due to disagreements with regulatory authorities;

• failure to demonstrate that a drug candidate is safe and effective or that a biologic candidate is safe, pure, and potent for its proposed indication;

• failure of clinical trial results to meet the level of statistical significance required for approval;

• reporting or data integrity issues related to our clinical trials;

• disagreement with our interpretation of data from preclinical studies or clinical trials;

• changes in approval policies or regulations that render our preclinical and clinical data insufficient for approval or require us to amend our clinical trial protocols;

• regulatory requests for additional analyses, reports, data, nonclinical studies and clinical trials, or questions regarding interpretations of data and results and the emergence of new information regarding our drug candidates or other products;

• failure to satisfy regulatory conditions regarding endpoints, patient population, available therapies and other requirements for our clinical trials in order to support marketing approval on an accelerated basis or at all;

• our failure to conduct a clinical trial in accordance with regulatory requirements or our clinical trial protocols; and

• clinical sites, investigators or other participants in our clinical trials deviating from a trial protocol, failing to conduct the trial in accordance with regulatory requirements, or dropping out of a trial.

The FDA, NMPA, EMA or a comparable regulatory authority may require more information, including additional preclinical, chemistry, manufacturing and controls, or CMC, and/or clinical data, to support approval, which may delay or prevent approval and our commercialization plans, or we may decide to abandon the development program.

Changes in regulatory requirements and guidance may also occur, and we may need to amend clinical trial protocols submitted to applicable regulatory authorities to reflect these changes. Amendments may require us to resubmit clinical trial protocols to IRBs or ethics committees for re-examination, which may impact the costs, timing or successful completion of a clinical trial.

If we experience delays in the completion of, or the termination of, a clinical trial of any of our drug candidates, the commercial prospects of that drug candidate will be harmed, and our ability to generate product sales revenues from any of those drug candidates will be delayed. In addition, any delays in completing our clinical trials will increase our costs, slow down our drug candidate development and approval process, and jeopardize our ability to commence product sales and generate related revenues for that candidate. Any of these occurrences may harm our business, financial condition and prospects significantly. In addition, many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of regulatory approval of our drug candidates.

Our development activities and regulatory filings also could be harmed or delayed by a shutdown of the U.S. government, including the FDA.

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We believe that our drug candidates’ designation in China as Category 1 products should confer certain regulatory advantages on us. These advantages may not result in commercial benefits to us as we expect, and they might be changed in the future in a manner adverse to us.

In China, prior to seeking approval from the NMPA, a pharmaceutical company needs to determine the drug’s registration category, which will determine the requirements for its clinical trial and marketing application. These categories range from Category 1, for drugs incorporating a new chemical entity that has not previously been marketed anywhere in the world, to Category 2, for drugs with new indications, dosage forms or routes of administration and the like, to Categories 3 and 4, for certain generic drugs, to Category 5, for “originator” (what would be known elsewhere as innovative) or generic drugs previously marketed abroad but not yet approved for marketing in China. Therapeutic biologics follow a similar classification system. All of our internally developed drug candidates are classified as Category 1 based on the respective clinical trial approval from the NMPA, which is a favored category for regulatory review and approval.

The NMPA has adopted several mechanisms for expedited review and approval for drug candidates that apply to Category 1 drug candidates. While we believe that the Category 1 designation of our internally developed clinical stage drug candidates should provide us with a significant regulatory, and therefore commercial, advantage over non-Chinese companies seeking to market products in China, we cannot be sure that this will be the case. The pharmaceutical regulatory environment is evolving quickly, and changes in laws, regulations, enforcement and internal policies could result in the “favored” status of Category 1 products changing, or being eliminated altogether or our products classification in Category 1 changing. We cannot be certain that the advantages we believe will be conferred by our Category 1 classifications will be realized or result in any material development or commercial advantage.

The absence of patent-linkage, patent-term extension and data and market exclusivity for NMPA-approved pharmaceutical products could increase the risk of early generic competition with our products in China.

In the United States, the Federal Food, Drug, and Cosmetic Act, as amended by the law generally referred to as the “Hatch-Waxman Amendments,” provides the opportunity for patent-term restoration of up to five years to reflect patent term lost during certain portions of product development and the FDA regulatory review process. The Hatch-Waxman Amendments also have a process for patent linkage, pursuant to which FDA will stay approval of certain follow-on applications during the pendency of litigation between the follow-on applicant and the patent holder or licensee, generally for a period of 30 months. Finally, the Hatch-Waxman Amendments provide for statutory exclusivities that can prevent submission or approval of certain follow-on marketing applications. For example, federal law provides a five-year period of exclusivity within the United States to the first applicant to obtain approval of a new chemical entity (as defined) and three years of exclusivity protecting certain innovations to previously approved active ingredients where the applicant was required to conduct new clinical investigations to obtain approval for the modification. Similarly, the Orphan Drug Act provides seven years of market exclusivity for certain drugs to treat rare diseases, where FDA designates the drug candidate as an orphan drug and the drug is approved for the designated orphan indication. These provisions, designed to promote innovation, can prevent competing products from entering the market for a certain period of time after FDA grants marketing approval for the innovative product.

In China, however, there is no currently effective law or regulation providing patent term extension, patent linkage, or data exclusivity (referred to as regulatory data protection). Therefore, a lower-cost generic drug can emerge onto the market much more quickly. Chinese regulators have set forth a framework for integrating patent linkage and data exclusivity into the Chinese regulatory regime, as well as for establishing a pilot program for patent term extension. To be implemented, this framework will require adoption of regulations. To date, the NMPA has issued several draft implementing regulations in this regard for public comment but no regulations have been formally issued. These factors result in weaker protection for us against generic competition in China than could be available to us in the United States until the relevant implementing regulations for extension, patent linkage, or data exclusivity are put into effect officially in China.

Chinese manufacturing facilities have historically experienced issues operating in line with established GMPs and international best practices, and passing FDA, NMPA and EMA inspections, which may result in a longer and costlier current good manufacturing practice inspection and approval process by the FDA, NMPA or EMA for our Chinese manufacturing processes and third party contract manufacturers.

To obtain FDA, NMPA and EMA approval for our products in the United States, China and Europe, respectively, we will need to undergo strict pre‑approval inspections of our manufacturing facilities, which we have located in China, or the manufacturing facilities of our contract manufacturers located in China and elsewhere. Historically, some manufacturing facilities in China have had difficulty meeting the FDA’s, NMPA's or EMA's standards. When inspecting our or our contractors' Chinese manufacturing facilities, the FDA, NMPA or EMA might cite GMP deficiencies, both minor and significant, which we may not be required to disclose. Remediating deficiencies can be laborious and costly and consume significant periods of time. Moreover, if the FDA, NMPA or EMA notes deficiencies as a result of its inspection, it will generally reinspect the facility to

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determine if the deficiency was remediated to its satisfaction. The FDA, NMPA or EMA may note further deficiencies as a result of its reinspection, either related to the previously identified deficiency or otherwise. If we cannot satisfy the FDA, NMPA and EMA as to our compliance with GMP in a timely basis, marketing approval for our products could be seriously delayed, which in turn would delay commercialization of our drug candidates.

Undesirable adverse events caused by our drugs and drug candidates could interrupt, delay or halt clinical trials, delay or prevent regulatory approval, limit the commercial profile of an approved label, or result in significant negative consequences following any regulatory approval.

Undesirable adverse events, or AEs, caused by our drugs and drug candidates could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in a more restrictive label or the delay or denial of regulatory approval by the FDA, NMPA, EMA or other comparable regulatory authorities, or could result in limitations or withdrawal following approvals. If the conduct or results of our trials or patient experience following approval reveal a high and unacceptable severity or prevalence of AEs, our trials could be suspended or terminated and the FDA, NMPA, EMA or other comparable regulatory authorities could order us to cease further development of, or deny approval of, our drug candidates or require us to cease commercialization following approval.

Numerous drug-related AEs and serious AEs, or SAEs, have been reported in our clinical trials. Some of these events have led to patient death. Drug-related AEs or SAEs could affect patient recruitment or the ability of enrolled subjects to complete the trial, and could result in product liability claims. Any of these occurrences may harm our reputation, business, financial condition and prospects significantly. In our periodic and current reports filed with the SEC and our press releases and scientific and medical presentations released from time to time we disclose clinical results for our drug candidates, including the occurrence of AEs and SAEs. Each such disclosure speaks only as of the date of the data cutoff used in such report, and we undertake no duty to update such information unless required by applicable law. Also, a number of immune-related adverse events, or IRAEs, have been associated with treatment with checkpoint inhibitors such as our investigational PD-1 inhibitor tislelizumab, including immune-mediated pneumonitis, colitis, hepatitis, endocrinopathies, nephritis and renal dysfunction, skin adverse reactions, and encephalitis. These IRAEs may be more common in certain patient populations (potentially including elderly patients) and may be exacerbated when checkpoint inhibitors are combined with other therapies.

Additionally, undesirable side effects caused by our drugs and drug candidates, or caused by our drugs and drug candidates when used in combination with other drugs, could potentially cause significant negative consequences, including:

• regulatory authorities could delay or halt pending clinical trials;

• we may suspend, delay or alter development of the drug candidate or marketing of the drug;

• regulatory authorities may withdraw approvals or revoke licenses of the drug, or we may determine to do so even if not required;

• regulatory authorities may require additional warnings on the label;

• we may be required to implement a Risk Evaluation Mitigation Strategy, or REMS, for the drug, as is the case with REVLIMID^®, or, if a REMS is already in place, to incorporate additional requirements under the REMS, or to develop a similar strategy as required by a regulatory authority;

• we may be required to conduct post-market studies; and

• we could be sued and held liable for harm caused to subjects or patients.

Any of these events could prevent us from achieving or maintaining market acceptance of the particular drug or drug candidate, and could significantly harm our business, results of operations and prospects.

Our drugs and any future approved drug candidates will be subject to ongoing regulatory obligations and continued regulatory review, which may result in significant additional expense and we may be subject to penalties if we fail to comply with regulatory requirements or experience unanticipated problems with our drug candidates.

Our drugs and any additional drug candidates that are approved will be subject to ongoing regulatory requirements for manufacturing, labeling, packaging, storage, advertising, promotion, sampling, record-keeping, conduct of post-marketing studies, and submission of safety, efficacy, and other post-market information, including both federal and state requirements in the United States and requirements of comparable regulatory authorities in China and other countries.

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Manufacturers and manufacturers’ facilities are required to comply with extensive FDA, NMPA, EMA and comparable regulatory authority requirements, including, in the United States, ensuring that quality control and manufacturing procedures conform to GMP regulations. As such, we and our contract manufacturers are and will be subject to continual review and inspections to assess compliance with GMP and adherence to commitments made in any New Drug Application, or NDA, or Biologics License Application, or BLA, other marketing application, and previous responses to any inspection observations. Accordingly, we and others with whom we work must continue to expend time, money and effort in all areas of regulatory compliance, including manufacturing, production and quality control.

The regulatory approvals for our drugs and any approvals that we receive for our drug candidates are and may be subject to limitations on the approved indicated uses for which the drug may be marketed or to the conditions of approval, which could adversely affect the drug’s commercial potential or contain requirements for potentially costly post-marketing testing and surveillance to monitor the safety and efficacy of the drug or drug candidate. The FDA, NMPA, EMA or comparable regulatory authorities may also require a REMS program or comparable program as a condition of approval of our drug candidates or following approval, as is the case with REVLIMID^®. In addition, if the FDA, NMPA, EMA or a comparable regulatory authority approves our drug candidates, we will have to comply with requirements including, for example, submissions of safety and other post-marketing information and reports, establishment registration, as well as continued compliance with GMP and Good Clinical Practice, or GCP, for any clinical trials that we conduct post-approval.

The FDA, NMPA, EMA or comparable regulatory authorities may seek to impose a consent decree or withdraw marketing approval if compliance with regulatory requirements is not maintained or if problems occur after the drug reaches the market. Later discovery of previously unknown problems with our drugs or drug candidates or with our drug’s manufacturing processes, or failure to comply with regulatory requirements, may result in revisions to the approved labeling to add new safety information; imposition of post-market studies or clinical studies to assess new safety risks; or imposition of distribution restrictions or other restrictions under a REMS program. Other potential consequences include, among other things:

• restrictions on the marketing or manufacturing of our drugs, withdrawal of the product from the market, or voluntary or mandatory product recalls;

• fines, untitled or warning letters, or holds on clinical trials;

• refusal by the FDA, NMPA, EMA or comparable regulatory authorities to approve pending applications or supplements to approved applications filed by us or suspension or revocation of license approvals or withdrawal of approvals;

• product seizure or detention, or refusal to permit the import or export of our drugs and drug candidates; and

• injunctions or the imposition of civil or criminal penalties.

The FDA, NMPA, EMA and other regulatory authorities strictly regulate the marketing, labeling, advertising and promotion of products that are placed on the market. Drugs may be promoted only for their approved indications and for use in accordance with the provisions of the approved label. The FDA, NMPA, EMA and other regulatory authorities actively enforce the laws and regulations prohibiting the promotion of off-label uses, and a company that is found to have improperly promoted off-label uses may be subject to significant liability. The policies of the FDA, NMPA, EMA and of other regulatory authorities may change and additional government regulations may be enacted that could prevent, limit or delay regulatory approval of our drug candidates. We cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative action, either in the United States or abroad, particularly in China, where the regulatory environment is constantly evolving. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or if we are not able to maintain regulatory compliance, we may lose any regulatory approval that we may have obtained and we may not achieve or sustain profitability.

In addition, if we were able to obtain accelerated approval of any of our drug candidates, the FDA would require us to conduct a confirmatory study to verify the predicted clinical benefit and may also require post-marketing safety studies. Other comparable regulatory authorities outside the United States, such as the NMPA or EMA, may have similar requirements. The results from the confirmatory study may not support the clinical benefit, which would result in the approval being withdrawn. While operating under accelerated approval, we will be subject to certain restrictions that we would not be subject to upon receiving regular approval.

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If safety, efficacy, or other issues arise with any medical product that is used in combination with our drugs, we may be unable to market such drug or may experience significant regulatory delays or supply shortages, and our business could be materially harmed.

We plan to develop certain of our drug candidates for use as a combination therapy. If the FDA, NMPA, EMA or another comparable regulatory agency revokes its approval of another therapeutic we use in combination with our drug candidates, we will not be able to market our drug candidates in combination with such revoked therapeutic. If safety or efficacy issues arise with these or other therapeutics that we seek to combine with our drug candidates in the future, we may experience significant regulatory delays, and we may be required to redesign or terminate the applicable clinical trials. In addition, if manufacturing or other issues result in a supply shortage of any component of our combination drug candidates, we may not be able to complete clinical development of our drug candidates on our current timeline or at all, or we may experience disruptions in the commercialization of our approved drugs.

Reimbursement may be limited or unavailable for our drug candidates. Even if we are able to commercialize our drugs and any approved drug candidates, the drugs may become subject to unfavorable pricing regulations or third-party reimbursement practices, which could harm our business.

The regulations that govern regulatory approvals, pricing and reimbursement for new therapeutic products vary widely from country to country. Some countries require approval of the sale price of a drug before it can be marketed. In many countries, the pricing review period begins after marketing or licensing approval is granted. In some non-U.S. markets, prescription pharmaceutical pricing remains subject to continuing governmental control even after initial approval is granted. As a result, we might obtain regulatory approval for a drug in a particular country, but then be subject to price regulations that delay our commercial launch of the drug and negatively impact our revenues.

Our ability to commercialize any drugs successfully also will depend in part on the extent to which reimbursement for these drugs and related treatments will be available on adequate terms, or at all, from government health administration authorities, private health insurers and other organizations.

A primary trend in the global healthcare industry is cost containment. Government authorities and these third-party payors have attempted to control costs by limiting coverage and the amount of reimbursement for particular medications.

In the United States, no uniform policy of coverage and reimbursement for drugs exists among third-party payors. As a result, obtaining coverage and reimbursement approval of a drug from a government or other third-party payor is a time-consuming and costly process that could require us to provide to each payor supporting scientific, clinical and cost-effectiveness data for the use of our drugs on a payor-by-payor basis, with no assurance that coverage and adequate reimbursement will be obtained. Even if we obtain coverage for a given drug, the resulting reimbursement rates might not be adequate for us to achieve or sustain profitability or may require co-payments that patients find unacceptably high. Additionally, third-party payors may not cover, or provide adequate reimbursement for, long-term follow-up evaluations required following the use of our genetically modified drugs. Patients are unlikely to use our drugs and any approved drug candidates unless coverage is provided and reimbursement is adequate to cover a significant portion of the cost of the drug. Because some of our drugs and drug candidates have a higher cost of goods than conventional therapies, and may require long-term follow up evaluations, the risk that coverage and reimbursement rates may be inadequate for us to achieve profitability may be greater.

In China, the Ministry of Human Resources and Social Security of China or provincial or local human resources and social security authorities, together with other government authorities, review the inclusion or removal of drugs from China’s National Drug Catalog for Basic Medical Insurance, Work-related Injury Insurance and Maternity Insurance, or the National Reimbursement Drug List, or the NRDL, or provincial or local medical insurance catalogues for the National Medical Insurance Program regularly, and the tier under which a drug will be classified, both of which affect the amounts reimbursable to program participants for their purchases of those drugs. There can be no assurance that our drugs and any approved drug candidates will be included in the NRDL or provincial reimbursements lists. Products included in the NRDL have been typically generic and essential drugs. Innovative drugs similar to our drug candidates have historically been more limited on their inclusion in the NRDL due to the affordability of the government’s Basic Medical Insurance, although this has been changing in recent years.

Increasingly, third-party payors are requiring that companies provide them with predetermined discounts from list prices and are challenging the prices charged for medical products. We cannot be sure that reimbursement will be available for any drug that we commercialize and, if reimbursement is available, what the level of reimbursement will be. Reimbursement may impact the demand for, or the price of, any drug which we commercialize. Obtaining or maintaining reimbursement for our drugs may be particularly difficult because of the higher prices often associated with drugs administered under the supervision

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of a physician. If reimbursement is not available or is available only to limited levels, we may not be able to successfully commercialize any drug candidate that we in-license or successfully develop.

There may be significant delays in obtaining reimbursement for approved drugs, and coverage may be more limited than the purposes for which the drug is approved by the FDA or other comparable regulatory authorities outside the United States. Moreover, eligibility for reimbursement does not imply that any drug will be paid for in all cases or at a rate that covers our costs, including research, development, manufacture, sale and distribution. Interim payments for new drugs, if applicable, may also not be sufficient to cover our costs and may not be made permanent. Payment rates may vary according to the use of the drug and the clinical setting in which it is used, may be based on payments allowed for lower cost drugs that are already reimbursed, and may be incorporated into existing payments for other services. Net prices for drugs may be reduced by mandatory discounts or rebates required by government healthcare programs or private payors and by any future weakening of laws that presently restrict imports of drugs from countries where they may be sold at lower prices than in the United States. Our inability to promptly obtain coverage and profitable payment rates from both government-funded and private payors for our drugs and any new drugs that we develop could have a material adverse effect on our business, our operating results, and our overall financial condition.

We intend to seek approval to market our drug candidates in the United States, China, Europe and in other jurisdictions. In some non-U.S. countries, particularly those in the European Union, the pricing of drugs and biologics is subject to governmental control, which can take considerable time even after obtaining regulatory approval. Market acceptance and sales of our drugs will depend significantly on the availability of adequate coverage and reimbursement from third-party payors for drugs and may be affected by existing and future health care reform measures.

Recently enacted and future legislation may increase the difficulty and cost for us to obtain regulatory approval of and commercialize our drug candidates and affect the prices we may obtain.

In the United States, China, the European Union and some other jurisdictions, there have been a number of legislative and regulatory changes and proposed changes regarding healthcare that could prevent or delay regulatory approval of our drug candidates, restrict or regulate post-approval activities and affect our ability to profitably sell our drugs and any drug candidates for which we obtain regulatory approval. We expect that healthcare reform measures may result in more rigorous coverage criteria and in additional downward pressure on the price that we receive for any approved drug. Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue, attain profitability, or commercialize our drugs.

Legislative and regulatory proposals have been made to expand post-approval requirements and restrict sales and promotional activities for pharmaceutical products. We cannot be sure whether additional legislative changes will be enacted, or whether FDA regulations, guidance or interpretations will be changed, or what the impact of such changes on the regulatory approvals of our drug candidates, if any, may be.

In recent years, there have been and will likely continue to be efforts to enact administrative or legislative changes to healthcare laws and policies, including modification, repeal, or replacement of all, or certain provisions of, the Affordable Care Act, or ACA. The implications of the ACA, its possible repeal, any legislation that may be proposed to replace the ACA, modifications to the implementation of the ACA, and the political uncertainty surrounding any repeal or replacement legislation for our business and financial condition, if any, are not yet clear.

Risks Related to Commercialization of Our Drugs and Drug Candidates

If we are not able to obtain, or experience delays in obtaining, required regulatory approvals, we will not be able to commercialize our drug candidates, and our ability to generate revenue will be materially impaired.

Before obtaining regulatory approvals for the commercial sale of any drug candidate for a target indication, we must demonstrate in preclinical studies and well-controlled clinical trials, and, with respect to approval in the United States, to the satisfaction of the FDA, that the drug candidate is safe and effective, or the biologic drug candidate is safe, pure, and potent, for use for that target indication and that the manufacturing facilities, processes and controls are adequate. In addition to preclinical and clinical data, the NDA or BLA must include significant information regarding the chemistry, manufacturing and controls for the drug candidate. Obtaining approval of an NDA or BLA is a lengthy, expensive and uncertain process, and approval may not be obtained. If we submit an NDA or BLA to the FDA, the FDA decides whether to accept or reject the submission for filing. We cannot be certain that any submissions will be accepted for filing and review by the FDA or comparable regulatory agencies.

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We have not yet demonstrated an ability to receive regulatory approval for our drug candidates. For example, we have limited experience in preparing the required materials for regulatory submission and do not have experience navigating the regulatory approval process. As a result, our ability to successfully submit an NDA or BLA and obtain regulatory approval for our drug candidates may involve more inherent risk, take longer, and cost more than it would if we were a company with experience in obtaining regulatory approvals.

Regulatory authorities outside of the United States, such as the NMPA and EMA, also have requirements for approval of drugs for commercial sale with which we must comply prior to marketing in those areas. Regulatory requirements can vary widely from country to country and could delay or prevent the introduction of our drug candidates. Clinical trials conducted in one country may not be accepted by regulatory authorities in other countries, and obtaining regulatory approval in one country does not mean that regulatory approval will be obtained in any other country. Approval processes vary among countries and can involve additional product testing and validation and additional administrative review periods. Seeking non-U.S. regulatory approval could require additional nonclinical studies or clinical trials, which could be costly and time consuming. The non-U.S. regulatory approval process may include all of the risks associated with obtaining FDA approval. For all of these reasons, we may not obtain non-U.S. regulatory approvals on a timely basis, if at all.

The process to develop, obtain regulatory approval for and commercialize drug candidates is long, complex and costly both inside and outside the United States, China and Europe, and approval is never guaranteed. Even if our drug candidates were to successfully obtain approval from the regulatory authorities, any approval might significantly limit the approved indications for use, or require that precautions, contraindications or warnings be included on the product labeling, or require expensive and time-consuming post-approval clinical trials or surveillance as conditions of approval. Following any approval for commercial sale of our drug candidates, certain changes to the drug, such as changes in manufacturing processes and additional labeling claims, may be subject to additional review and approval by the FDA, NMPA and EMA and comparable regulatory authorities. Also, regulatory approval for any of our drug candidates may be withdrawn. If we are unable to obtain regulatory approval for our drug candidates in one or more jurisdictions, or any approval contains significant limitations, our target market will be reduced and our ability to realize the full market potential of our drug candidates will be harmed. Furthermore, we may not be able to obtain sufficient funding or generate sufficient revenue and cash flows to continue the development of any other drug candidate in the future.

We have limited manufacturing capability and must rely on third-party manufacturers to manufacture our clinical supplies and commercial products, if and when approved, and if they fail to meet their obligations, the development and commercialization of our products could be adversely affected.

We have limited manufacturing capabilities and experience. Our drug candidates are composed of multiple components and require specialized formulations for which scale-up and manufacturing could be difficult. We have limited experience in such scale-up and manufacturing requiring us to depend on a limited number of third parties, who may not be able to deliver in a timely manner, or at all. In order to develop products, apply for regulatory approvals, and commercialize our products, we will need to develop, contract for, or otherwise arrange for the necessary manufacturing capabilities. There are risks inherent in pharmaceutical manufacturing that could affect the ability of our contract manufacturers to meet our delivery time requirements or provide adequate amounts of material to meet our needs.

Additionally, our internally-developed drug candidates have not yet been manufactured for commercial use. If any of our drug candidates become approved for commercial sale, we will need to establish either internal or third-party manufacturing capacity. Manufacturing partner requirements may require us to fund capital improvements, perhaps on behalf of third parties, to support the scale-up of manufacturing and related activities. We may not be able to establish scaled manufacturing capacity for an approved drug in a timely or economic manner, if at all. If we or our third-party manufacturers are unable to provide commercial quantities of such an approved drug, we will have to successfully transfer manufacturing technology to a different manufacturer. Engaging a new manufacturer for such an approved drug could require us to conduct comparative studies or utilize other means to determine bioequivalence of the new and prior manufacturers’ products, which could delay or prevent our ability to commercialize such an approved drug. If we or any of these manufacturers is unable or unwilling to increase its manufacturing capacity or if we are unable to establish alternative arrangements on a timely basis or on acceptable terms, the development and commercialization of such an approved drug may be delayed or there may be a shortage in supply. Any inability to manufacture our drug candidates or future approved drugs in sufficient quantities when needed would seriously harm our business.

Manufacturers of our approved drugs, if any, must comply with GMP requirements enforced by the FDA, NMPA, EMA and other comparable foreign health authorities through facilities inspection programs. These requirements include quality control, quality assurance, and the maintenance of records and documentation. Manufacturers of our approved drugs, if any, may be unable to comply with these GMP requirements and with other FDA, NMPA, EMA, state, and foreign regulatory

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requirements. A failure to comply with these requirements may result in fines and civil penalties, suspension of production, suspension or delay in product approval, product seizure or recall, or withdrawal of product approval. If the safety of any quantities supplied is compromised due to a manufacturer’s failure to adhere to applicable laws or for other reasons, we may not be able to obtain regulatory approval for or successfully commercialize our products, which would seriously harm our business.

Our drugs and any future approved drug candidates may fail to achieve the degree of market acceptance by physicians, patients, third-party payors and others in the medical community necessary for commercial success.

Our drugs and any future approved drug candidates may fail to gain sufficient market acceptance by physicians, patients, third-party payors and others in the medical community. For example, current cancer treatments like chemotherapy and radiation therapy are well established in the medical community, and doctors may continue to rely on these treatments to the exclusion of our drugs and drug candidates. In addition, physicians, patients and third-party payors may prefer other novel products to ours. If our drugs and drug candidates do not achieve an adequate level of acceptance, we may not generate significant product revenues and we may not become profitable. The degree of market acceptance of our drugs and drug candidates, if approved for commercial sale, will depend on a number of factors, including:

• the clinical indications for which our drugs and drug candidates are approved;

• physicians, hospitals, cancer treatment centers and patients considering our drugs and drug candidates as a safe and effective treatment;

• the potential and perceived advantages of our drugs and drug candidates over alternative treatments;

• the prevalence and severity of any side effects;

• product labeling or product insert requirements of regulatory authorities;

• limitations or warnings contained in the labeling approved by regulatory authorities;

• the timing of market introduction of our drugs and drug candidates as well as competitive drugs;

• the cost of treatment in relation to alternative treatments;

• the availability of adequate coverage, reimbursement and pricing by third-party payors and government authorities;

• the willingness of patients to pay out-of-pocket in the absence of coverage and reimbursement by third-party payors and government authorities; and

• the effectiveness of our sales and marketing efforts.

If any drugs that we commercialize fail to achieve market acceptance among physicians, patients, hospitals, cancer treatment centers or others in the medical community, we will not be able to generate significant revenue. Even if our drugs achieve market acceptance, we may not be able to maintain that market acceptance over time if new products or technologies are introduced that are more favorably received than our drugs, are more cost effective or render our drugs obsolete.

We have limited experience in marketing third-party drugs and no experience in launching an internally-developed drug candidate. If we are unable to further develop marketing and sales capabilities or enter into agreements with third parties to market and sell our drug candidates and third-party drugs, we may not be able to generate product sales revenue.

In connection with our strategic collaboration with Celgene, we were granted an exclusive license in China, excluding Hong Kong, Macau and Taiwan, to commercialize Celgene’s approved cancer therapies, ABRAXANE^®, REVLIMID^®, and VIDAZA^®, and Celgene’s investigational agent avadomide (CC-122) in clinical development, and acquired Celgene’s commercial operations in China, excluding certain functions. We started marketing Celgene’s approved drugs in September 2017. We continue to build our salesforce in China to market these drugs and our drug candidates, in the event they receive commercial approval, and any additional drugs or drug candidates that we may in-license, which will require significant capital expenditures, management resources and time.

We have not yet demonstrated an ability to launch and commercialize any of our drug candidates. For example, we do not have experience in building a commercial team, conducting a comprehensive market analysis, obtaining state licenses and reimbursement, or managing distributors and a sales force for our internally-developed drug candidates. As a result, our ability to successfully commercialize our drug candidates may involve more inherent risk, take longer, and cost more than it would if we were a company with experience launching drug candidates.

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We will have to compete with other pharmaceutical and biotechnology companies to recruit, hire, train and retain marketing and sales personnel. If we are unable to, or decide not to, further develop internal sales, marketing and commercial distribution capabilities for any or all of our drugs, we will likely pursue collaborative arrangements regarding the sales and marketing of our drugs. However, there can be no assurance that we will be able to establish or maintain such collaborative arrangements, or if we are able to do so, that they will have effective sales forces. Any revenue we receive will depend upon the efforts of such third parties. We would have little or no control over the marketing and sales efforts of such third parties, and our revenue from product sales may be lower than if we had commercialized our drugs ourselves. We also face competition in our search for third parties to assist us with the sales and marketing efforts for our drugs.

There can be no assurance that we will be able to further develop and successfully maintain in-house sales and commercial distribution capabilities or establish or maintain relationships with third-party collaborators to successfully commercialize any product, and as a result, we may not be able to generate product sales revenue.

We face substantial competition, which may result in others discovering, developing or commercializing competing drugs before or more successfully than we do.

The development and commercialization of new drugs is highly competitive. We face competition from major pharmaceutical companies, specialty pharmaceutical companies and biotechnology companies worldwide. There are a number of large pharmaceutical and biotechnology companies that currently market and sell drugs or are pursuing the development of drugs for the treatment of cancer for which we are commercializing our drugs or developing our drug candidates. Potential competitors also include academic institutions, government agencies and other public and private research organizations that conduct research, seek patent protection and establish collaborative arrangements for research, development, manufacturing and commercialization.

Our commercial opportunity could be reduced or eliminated if our competitors develop and commercialize drugs that are safer, more effective, have fewer or less severe side effects, are more convenient or are less expensive than any drugs that we commercialize or may develop. Our competitors also may obtain approval from the FDA, NMPA, EMA or other comparable regulatory authorities for their drugs more rapidly than we may obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to enter the market and or slow our regulatory approval.

Many of the companies against which we are competing or against which we may compete in the future have significantly greater financial resources and expertise in research and development, manufacturing, preclinical testing, conducting clinical trials, obtaining regulatory approvals and marketing approved drugs than we do. Mergers and acquisitions in the pharmaceutical and biotechnology industries may result in even more resources being concentrated among a smaller number of our competitors. Smaller and other early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies. These third parties compete with us in recruiting and retaining qualified scientific and management personnel, establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs.

The market opportunities for our drugs and drug candidates may be limited to those patients who are ineligible for or have failed prior treatments and may be small.

In markets with approved therapies, we expect to initially seek approval of our drug candidates as a later stage therapy for patients who have failed other approved treatments. Subsequently, for those drugs that prove to be sufficiently beneficial, if any, we would expect to seek approval as a second line therapy and potentially as a first line therapy, but there is no guarantee that our drug candidates, even if approved, would be approved for second line or first line therapy.

Our projections of both the number of people who have the cancers we are targeting, as well as the subset of people with these cancers in a position to receive later stage therapy and who have the potential to benefit from treatment with our drug candidates, are based on our beliefs and estimates and may prove to be inaccurate or based on imprecise data. Further, new studies may change the estimated incidence or prevalence of these cancers. The number of patients may turn out to be lower than expected. Additionally, the potentially addressable patient population for our drugs and drug candidates may be limited or may not be amenable to treatment with our drugs and drug candidates. Even if we obtain significant market share for our drug candidates, because the potential target populations are small, we may never achieve profitability without obtaining regulatory approval for additional indications, including use as a first or second line therapy.

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We may be subject, directly or indirectly, to applicable anti-kickback, false claims laws, physician payment transparency laws, fraud and abuse laws or similar healthcare and security laws and regulations in the United States and other jurisdictions, which could expose us to criminal sanctions, civil penalties, contractual damages, reputational harm and diminished profits and future earnings.

Healthcare providers, physicians and others play a primary role in the recommendation and prescription of any products for which we obtain regulatory approval. If we obtain FDA approval for any of our drug candidates and begin commercializing those drugs in the United States, our operations may be subject to various federal and state fraud and abuse laws, including, without limitation, the federal Anti-Kickback Statute, the federal False Claims Act, and physician payment sunshine laws and regulations. These laws may impact, among other things, our proposed sales, marketing and education programs. In addition, we may be subject to patient privacy regulation by both the federal government and the states in which we conduct our business.

Additionally, we are subject to state and non-U.S. equivalents of each of the healthcare laws described above, among others, some of which may be broader in scope and may apply to healthcare services reimbursed by any source, not just governmental payors, including private insurers. In addition, some states have passed laws that require pharmaceutical companies to comply with the April 2003 Office of Inspector General Compliance Program Guidance for Pharmaceutical Manufacturers and/or other voluntary industry codes of conduct. Several states also impose other marketing restrictions or require pharmaceutical companies to make marketing or price disclosures to the state. There are ambiguities as to what is required to comply with these state requirements, and if we fail to comply with an applicable state law requirement, we could be subject to penalties.

Violations of fraud and abuse laws may be punishable by criminal and/or civil sanctions, including penalties, fines and/or exclusion or suspension from federal and state healthcare programs such as Medicare and Medicaid and debarment from contracting with the U.S. government. In addition, private individuals have the ability to bring actions on behalf of the U.S. government under the federal False Claims Act as well as under the false claims laws of several states.

Neither the U.S. government nor the U.S. courts have provided definitive guidance on the applicability of fraud and abuse laws to our business. Law enforcement authorities are increasingly focused on enforcing these laws, and it is possible that some of our practices may be challenged under these laws. Efforts to ensure that our business arrangements with third parties will comply with applicable healthcare laws and regulations will involve substantial costs. It is possible that governmental authorities will conclude that our business practices may not comply with current or future statutes, regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could have a significant impact on our business, including the imposition of civil, criminal and administrative penalties, damages, disgorgement, monetary fines, possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs, contractual damages, reputational harm, diminished profits and future earnings, and curtailment of our operations, any of which could adversely affect our ability to operate our business and our results of operations. In addition, the approval and commercialization of any of our drug candidates outside the United States will also likely subject us to non-U.S. equivalents of the healthcare laws mentioned above, among other non-U.S. laws.

If any of the physicians or other providers or entities with whom we expect to do business are found to be not in compliance with applicable laws, they may be subject to criminal, civil or administrative sanctions, including exclusions from government funded healthcare programs, which may also adversely affect our business.

We may explore the licensing of development and commercialization rights or other forms of collaboration worldwide, which will expose us to additional risks of conducting business in additional international markets.

Non-U.S. markets are an important component of our growth strategy. For example, in connection with the Celgene transactions, we retained exclusive rights for the development and commercialization of tislelizumab for hematological cancers globally and for solid tumors in China and the rest of Asia, other than Japan. We initially intend to focus on opportunities in China, in particular. If we fail to obtain licenses or enter into collaboration arrangements with third parties in other markets, or if these parties are not successful, our revenue-generating growth potential will be adversely affected. Moreover, international business relationships subject us to additional risks that may materially adversely affect our ability to attain or sustain profitable operations, including:

• efforts to enter into collaboration or licensing arrangements with third parties in connection with our international sales, marketing and distribution efforts may increase our expenses or divert our management’s attention from the acquisition or development of drug candidates;

• difficulty of effective enforcement of contractual provisions in local jurisdictions;

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• potential third-party patent rights or potentially reduced protection for intellectual property rights;

• unexpected changes in tariffs, trade barriers and regulatory requirements, including the loss of normal trade status between China and the United States;

• economic weakness, including inflation;

• compliance with tax, employment, immigration and labor laws for employees traveling abroad;

• the effects of applicable non-U.S. tax structures and potentially adverse tax consequences;

• currency fluctuations, which could result in increased operating expenses and reduced revenue;

• workforce uncertainty and labor unrest;

• failure of our employees and contracted third parties to comply with Office of Foreign Asset Control rules and regulations and the Foreign Corrupt Practices Act and other anti-bribery and corruption laws; and

• business interruptions resulting from geo-political actions, including trade disputes, war and terrorism, or natural disasters, including earthquakes, volcanoes, typhoons, floods, hurricanes and fires.

These and other risks may materially adversely affect our ability to attain or sustain revenue from international markets.

The illegal distribution and sale by third parties of counterfeit versions of our drugs or stolen products could have a negative impact on our reputation and business.

Third parties might illegally distribute and sell counterfeit or unfit versions of our drugs, which do not meet our or our collaborators’ rigorous manufacturing and testing standards. A patient who receives a counterfeit or unfit drug may be at risk for a number of dangerous health consequences. Our reputation and business could suffer harm as a result of counterfeit or unfit drugs sold under our or our collaborators’ brand name(s). In addition, thefts of inventory at warehouses, plants or while in-transit, which are not properly stored and which are sold through unauthorized channels, could adversely impact patient safety, our reputation and our business.

Risks Related to Our Financial Position and Need for Additional Capital

We have a limited operating history, which may make it difficult to evaluate our current business and predict our future performance.

We are a commercial-stage biotechnology company formed in October 2010. Our operations to date have focused on organizing and staffing our company, business planning, raising capital, establishing our intellectual property portfolio, conducting preclinical studies and clinical trials of our drug candidates, developing and operating internal manufacturing capabilities, and the commercialization of our drugs. We have not yet completed large-scale, pivotal or registrational clinical trials, obtained regulatory approvals, or manufactured or had manufactured a commercial scale drug. We have no internally-developed products approved for commercial sale and have not generated any revenue from internally-developed product sales. Since September 2017, we have generated revenues from the sale of drugs in China licensed from Celgene. Our limited operating history, particularly in light of the rapidly evolving cancer treatment field, may make it difficult to evaluate our current business and reliably predict our future performance. We may encounter unforeseen expenses, difficulties, complications, delays and other known and unknown factors. If we do not address these risks and difficulties successfully, our business will suffer.

We have incurred significant net losses since our inception and anticipate that we will continue to incur net losses for the foreseeable future and may never become profitable.

Investment in pharmaceutical drug development is highly speculative. It entails substantial upfront capital expenditures and significant risk that a drug candidate will fail to gain regulatory approval or become commercially viable. We continue to incur significant expenses related to our ongoing operations. As a result, we have incurred losses in each period since our inception, except in the third quarter of 2017, when we were profitable due to revenue recognized from an up-front license fee from Celgene. As of March 31, 2019 and December 31, 2018, we had an accumulated deficit of $1.2 billion and $1.0 billion, respectively. Substantially all of our operating losses have resulted from costs incurred in connection with our research and development programs and from selling, general and administrative expenses associated with our operations.

We expect to continue to incur losses for the foreseeable future, and we expect these losses to increase in the near term as we continue and expand our development of, and seek regulatory approvals for, our drug candidates, and our manufacturing

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facilities, and continue to commercialize the drugs that we have licensed from Celgene in China and any other drugs that we may successfully develop or license. Typically, it takes many years to develop one new drug from the time it is discovered to when it is available for treating patients. In addition, we will continue to incur costs associated with operating as a public company in the United States and Hong Kong. We will also incur costs in support of our growth as a commercial-stage global biotechnology company. The size of our future net losses will depend, in part, on the number and scope of our drug development programs and the associated costs of those programs, the cost of our manufacturing activities, the cost of commercializing any approved products, our ability to generate revenues and the timing and amount of milestones and other payments we make or receive with arrangements with third parties. If any of our drug candidates fail in clinical trials or do not gain regulatory approval, or if approved, fail to achieve market acceptance, we may never become profitable. Even if we achieve profitability in the future, we may not be able to sustain profitability in subsequent periods. Our failure to become and remain profitable would decrease the value of our company and could impair our ability to raise capital, maintain our research and development efforts, expand our business or continue our operations.

We will need to obtain additional financing to fund our operations, and if we are unable to obtain such financing, we may be unable to complete the development and commercialization of our primary drug candidates.

Our drug candidates will require the completion of clinical development, regulatory review, scale up and availability of manufacturing resources, significant marketing efforts and substantial investment before they can provide us with product sales revenue. Our operations have consumed substantial amounts of cash since inception. Our operating activities used $547.7 million and provided $12.8 million of net cash during the years ended December 31, 2018 and 2017, respectively, and used $172.0 million and $104.5 million of net cash during the three months ended March 31, 2019 and 2018, respectively. We recorded negative net cash flows from operating activities in 2018 primarily due to our net loss of $674.0 million. Although we recorded positive net cash flows from operating activities in 2017, primarily due to the upfront fees received from the Celgene collaboration, we cannot assure you that we will be able to generate positive cash flows from operating activities in the future. Our liquidity and financial condition may be materially and adversely affected by the negative net cash flows, and we cannot assure you that we will have sufficient cash from other sources to fund our operations. If we resort to other financing activities to generate additional cash, we will incur financing costs and we cannot guarantee that we will be able to obtain the financing on terms acceptable to us, or at all, and if we raise finance by issuing further equity securities your interest in our company may be diluted. If we have negative operating cash flows in the future, our liquidity and financial condition may be materially and adversely affected.

We expect to continue to spend substantial amounts on drug discovery, advancing the clinical development of our drug candidates, developing our manufacturing capabilities and securing drug supply, commercializing our drugs and launching and commercializing any drug candidates for which we receive regulatory approval, including building our own commercial organization to address markets in China, the United States and other countries.

While we have generated product revenue in China since September 2017 from sales of our drugs licensed from Celgene, these revenues are not sufficient to support our operations. Although it is difficult to predict our liquidity requirements, based upon our current operating plan, we believe that we have sufficient cash, cash equivalents and short-term investments to meet our projected operating requirements for at least the next 12 months. However, we believe that our existing cash, cash equivalents and short-term investments will not be sufficient to enable us to complete all global development or commercially launch all of our current drug candidates for the currently anticipated indications and to invest in additional programs. Accordingly, we will require further funding through public or private offerings, debt financing, collaboration and licensing arrangements or other sources. Our forecast of the period of time through which our financial resources will be adequate to support our operations is a forward-looking statement and involves risks and uncertainties, and actual results could vary as a result of a number of factors, including the factors discussed elsewhere in this “Risk Factors” section. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our available capital resources sooner than we currently expect. Our future funding requirements will depend on many factors, including:

• the progress, timing, scope and costs of our clinical trials, including the ability to timely enroll patients in our planned and potential future clinical trials;

• the outcome, timing and cost of regulatory approvals of our drug candidates;

• the number and characteristics of drug candidates that we may in-license and develop;

• the amount and timing of the development, milestone and royalty payments we receive from our collaborators;

• the cost of filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights;

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• selling and marketing costs associated with our drugs and any future drug candidates that may be approved, including the cost and timing of expanding our marketing and sales capabilities;

• the terms and timing of any potential future collaborations, licensing or other arrangements that we may establish;

• cash requirements of any future acquisitions, licensing and/or the development of other drug candidates;

• the cost and timing of development and completion of commercial-scale internal or outsourced manufacturing activities; and

• our headcount growth and associated costs.

Adequate additional funding may not be available to us on acceptable terms, or at all. If we are unable to raise capital when needed or on attractive terms, we would be forced to delay, reduce or eliminate our research and development programs or future commercialization efforts. Our inability to obtain additional funding when we need it could seriously harm our business.

Raising additional capital may cause dilution to our shareholders, restrict our operations or require us to relinquish rights to our technologies or drug candidates.

We may seek additional funding through a combination of equity offerings, debt financings, collaborations and licensing arrangements. To the extent that we raise additional capital through the sale of equity or convertible debt securities, your ownership interest will be diluted, and the terms may include liquidation or other preferences that adversely affect your rights as a holder of our ordinary shares and/or ADSs. The incurrence of additional indebtedness or the issuance of certain equity securities could result in increased fixed payment obligations and could also result in certain additional restrictive covenants, such as limitations on our ability to incur additional debt or issue additional equity, limitations on our ability to acquire or license intellectual property rights and other operating restrictions that could adversely impact our ability to conduct our business. In addition, issuance of additional equity securities, or the possibility of such issuance, may cause the market price of our ADSs and/or ordinary shares to decline. In the event that we enter into collaborations or licensing arrangements in order to raise capital, we may be required to accept unfavorable terms, including relinquishing or licensing to a third party on unfavorable terms our rights to technologies or drug candidates that we otherwise would seek to develop or commercialize ourselves or potentially reserve for future potential arrangements when we might be able to achieve more favorable terms.

Fluctuations in exchange rates could result in foreign currency exchange losses and could materially reduce the value of your investment.

We incur portions of our expenses, and derive revenues, in currencies other than the U.S. dollar or Hong Kong dollar, in particular, the RMB, the Euro, and Australian dollar. As a result, we are exposed to foreign currency exchange risk as our results of operations and cash flows are subject to fluctuations in foreign currency exchange rates. We do not regularly engage in hedging transactions to protect against uncertainty in future exchange rates between particular foreign currencies and the U.S. dollar. A decline in the value of the U.S. dollar against currencies in countries in which we conduct clinical trials could have a negative impact on our research and development costs. We cannot predict the impact of foreign currency fluctuations, and foreign currency fluctuations in the future may adversely affect our financial condition, results of operations and cash flows.

The value of the RMB against the U.S. dollar and other currencies may fluctuate and is affected by, among other things, changes in political and economic conditions and the foreign exchange policy proposed or adopted by the People’s Republic of China, or PRC, Australia and other non-U.S. governments. It is difficult to predict how market forces or PRC, Australia, other non-U.S. governments and U.S. government policies may impact the exchange rate of RMB and the U.S. dollar or any other currencies in the future. There remains significant international pressure on the PRC government to adopt a more flexible currency policy, including from the U.S. government, which has threatened to label China as a “currency manipulator,” which could result in greater fluctuation of the RMB against the U.S. dollar.

Substantially all of our revenues are denominated in U.S. dollars and RMB, and our costs are denominated in U.S. dollars, Australian dollars and RMB, and a large portion of our financial assets and a significant portion of our debt is denominated in U.S. dollars and RMB. Any significant revaluation of the RMB may materially reduce any dividends payable on our ordinary shares and/or ADSs in U.S. dollars. To the extent that we need to convert U.S. dollars into RMB for our operations, appreciation of the RMB against the U.S. dollar would have an adverse effect on the RMB amount we would receive. Conversely, if we decide to convert RMB into U.S. dollars for the purpose of making payments for dividends on our ADSs or for other business purposes, appreciation of the U.S. dollar against the RMB would have a negative effect on the U.S. dollar amount we would receive.

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In addition, there are limited instruments available for us to reduce our foreign currency risk exposure at reasonable costs. Furthermore, we are also currently required to obtain the State Administration of Foreign Exchange's approval before converting significant sums of foreign currencies into RMB. All of these factors could materially and adversely affect our business, financial condition, results of operations and prospects, and could reduce the value of, and dividends payable on, our ordinary shares and/or ADSs in foreign currency terms.

Our business, profitability and liquidity may be adversely affected by deterioration in the credit quality of, or defaults by, our distributors and customers, and an impairment in the carrying value of our short-term investments could negatively affect our consolidated results of operations.

We are exposed to the risk that our distributors and customers may default on their obligations to us as a result of bankruptcy, lack of liquidity, operational failure or other reasons. As we continue to expand our business, the amount and duration of our credit exposure will be expected to increase over the next few years, as will the breadth of the entities to which we have credit exposure. Although we regularly review our credit exposure to specific distributors and customers that we believe may present credit concerns, default risks may arise from events or circumstances that are difficult to detect or foresee.

Also, the carrying amounts of cash and cash equivalents, restricted cash and short-term investments represent the maximum amount of loss due to credit risk. We had cash and cash equivalents of $764.5 million, $712.9 million and $239.6 million, restricted cash of $23.9 million, $27.8 million and nil and short-term investments of $849.2 million, $1.1 billion and $597.9 million at March 31, 2019, December 31, 2018 and 2017, respectively, most of which are deposited in financial institutions outside of China. Although our cash and cash equivalents in China are deposited with various major reputable financial institutions, the deposits placed with these financial institutions are not protected by statutory or commercial insurance. In the event of bankruptcy of one of these financial institutions, we may be unlikely to claim our deposits back in full. As of March 31, 2019 and December 31, 2018, our short-term investments consisted primarily of U.S. Treasury securities, U.S. agency securities and time deposits. Although we believe that the U.S. Treasury securities, U.S. agency securities and time deposits are of high credit quality and continually monitor the credit worthiness of these institutions, concerns about, or a default by, one institution in the U.S. market, could lead to significant liquidity problems, losses or defaults by other institutions, which in turn could adversely affect us.

Risks Related to Our Intellectual Property

If we are unable to obtain and maintain patent protection for our drug candidates and drugs through intellectual property rights, or if the scope of such intellectual property rights obtained is not sufficiently broad, third parties may compete directly against us.

Our success depends in large part on our ability to protect our proprietary technology and drug candidates and drugs from competition by obtaining, maintaining and enforcing our intellectual property rights, including patent rights. We seek to protect the drugs, drug candidates and technology that we consider commercially important by filing patent applications in the United States, the PRC and other countries, relying on trade secrets or pharmaceutical regulatory protection or employing a combination of these methods. This process is expensive and time-consuming, and we may not be able to file and prosecute all necessary or desirable patent applications at a reasonable cost or in a timely manner. It is also possible that we will fail to identify patentable aspects of our research and development output before it is too late to obtain patent protection.

The patent prosecution process is expensive, time-consuming and complex, and we may not be able to file, prosecute, maintain, enforce or license all necessary or desirable patent applications at a reasonable cost or in a timely manner. As a result, we may not be able to prevent competitors from developing and commercializing competitive drugs in all such fields and territories.

Patents may be invalidated and patent applications may not be granted for a number of reasons, including known or unknown prior art, deficiencies in the patent applications or the lack of novelty of the underlying invention or technology. It is also possible that we will fail to identify patentable aspects of our research and development output in time to obtain patent protection. Although we enter into non-disclosure and confidentiality agreements with parties who have access to confidential or patentable aspects of our research and development output, such as our employees, corporate collaborators, outside scientific collaborators, contract manufacturers, consultants, advisors and any other third parties, any of these parties may breach such agreements and disclose such output before a patent application is filed, thereby jeopardizing our ability to seek patent protection. In addition, publications of discoveries in the scientific literature often lag behind the actual discoveries, and patent applications in the United States and other jurisdictions are typically not published until 18 months after filing, or in some cases, not at all. Therefore, we cannot be certain that we were the first to make the inventions claimed in our patents or pending patent applications or that we were the first to file for patent protection of such inventions. Furthermore, the PRC and, recently, the United States have adopted the “first-to-file” system under which whoever first files a patent application will be awarded

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the patent if all other patentability requirements are met. Under the first-to-file system, third parties may be granted a patent relating to a technology which we invented.

In addition, under PRC patent law, any organization or individual that applies for a patent in a foreign country for an invention or utility model accomplished in China is required to report to the National Intellectual Property Administration, or NIPA, for security examination. Otherwise, if an application is later filed in China, the patent right will not be granted.

The coverage claimed in a patent application can be significantly reduced before the patent is issued, and its scope can be reinterpreted after issuance. Even if patent applications we license or own currently or in the future issue as patents, they may not issue in a form that will provide us with any meaningful protection, prevent competitors or other third parties from competing with us, or otherwise provide us with any competitive advantage. In addition, the patent position of biotechnology and pharmaceutical companies generally is highly uncertain, involves complex legal and factual questions, and has been the subject of much litigation in recent years. As a result, the issuance, scope, validity, enforceability and commercial value of our patent rights are highly uncertain.

The issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability, and our patents may be challenged in the courts or patent offices in the United States, PRC and other countries. We may be subject to a third-party preissuance submission of prior art to the USPTO or become involved in opposition, derivation, revocation, re-examination, post-grant and inter partes review, or interference proceedings or similar proceedings in foreign jurisdictions challenging our patent rights or the patent rights of others. An adverse determination in any such submission, proceeding or litigation could reduce the scope of, or invalidate, our patent rights, allow third parties to commercialize our technology or drug candidates and compete directly with us without payment to us, or result in our inability to manufacture or commercialize drug candidates without infringing, misappropriating or otherwise violating third-party patent rights. Moreover, we may have to participate in interference proceedings declared by the USPTO to determine priority of invention or in post-grant challenge proceedings, such as oppositions in a foreign patent office, that challenge the priority of our invention or other features of patentability of our patents and patent applications. Such challenges may result in loss of patent rights, loss of exclusivity, or in patent claims being narrowed, invalidated, or held unenforceable, which could limit our ability to stop others from using or commercializing similar or identical technology and products, or limit the duration of the patent protection of our technology and drug candidates. Such proceedings also may result in substantial costs and require significant time from our scientists and management, even if the eventual outcome is favorable to us. Consequently, we do not know whether any of our technology or drug candidates will be protectable or remain protected by valid and enforceable patents. Our competitors or other third parties may be able to circumvent our patents by developing similar or alternative technologies or products in a non-infringing manner.

Furthermore, although various extensions may be available, the life of a patent and the protection it affords, is limited. For example, the approved cancer therapies we have licensed from Celgene in China, ABRAXANE^®, REVLIMID^®, and VIDAZA^®, face or are expected to face competition from generic medications, and we may face similar competition for any approved drug candidates even if we successfully obtain patent protection once the patent life has expired for the drug or if the patents are not enforced. Manufacturers of generic drugs may challenge the scope, validity or enforceability of our patents in court, and we may not be successful in enforcing or defending those intellectual property rights and, as a result, may not be able to develop or market the relevant product exclusively, which would have a material adverse effect on any potential sales of that product. The issued patents and pending patent applications, if issued, for our drug candidates are expected to expire on various dates as described in “Part I-Item 1-Business-Intellectual Property” of our Annual Report on Form 10-K for the year ended December 31, 2018. Upon the expiration of our issued patents or patents that may issue from our pending patent applications, we will not be able to assert such patent rights against potential competitors and our business and results of operations may be adversely affected.

Given the amount of time required for the development, testing and regulatory review of new drug candidates, patents protecting such drug candidates might expire before or shortly after such drug candidates are commercialized. As a result, our patents and patent applications may not provide us with sufficient rights to exclude others from commercializing products similar or identical to ours. Moreover, some of our patents and patent applications are, and may in the future be, co-owned with or licensed from third parties. If we are unable to obtain an exclusive license to any such third-party co-owners’ interest in such patents or patent applications, such co-owners may be able to license their rights to other third parties, including our competitors, and our competitors could market competing products and technology. In addition, we may need the cooperation of any such co-owners or the licensors of our patents in order to enforce such patents against third parties, and such cooperation may not be provided to us. Any of the foregoing could have a material adverse effect on our competitive position, business, financial conditions, results of operations and prospects.

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We may not be able to protect our intellectual property rights throughout the world.

Filing, prosecuting, maintaining and defending patents on drug candidates in all countries throughout the world could be prohibitively expensive for us, and our intellectual property rights in some non-U.S. countries can have a different scope and strength than do those in the United States. In addition, the laws of certain non-U.S. countries do not protect intellectual property rights to the same extent as U.S. federal and state laws do. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the United States, or from selling or importing drugs made using our inventions in and into the United States or non-U.S. jurisdictions. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own drugs and further, may export otherwise infringing drugs to non-U.S. jurisdictions where we have patent protection, but where enforcement rights are not as strong as those in the United States. These drugs may compete with our drugs and drug candidates and our patent rights or other intellectual property rights may not be effective or adequate to prevent them from competing. In addition, we may not be able to enforce patents that we in-license from third parties, who may delay or decline to enforce patents in the licensed territory.

We currently hold issued trademark registrations and have trademark applications pending, any of which may be the subject of a governmental or third-party objection, which could prevent the maintenance or issuance of the same. If we are unsuccessful in obtaining trademark protection for our primary brands, we may be required to change our brand names, which could materially adversely affect our business. Moreover, as our products mature, our reliance on our trademarks to differentiate us from our competitors will increase, and as a result, if we are unable to prevent third parties from adopting, registering or using trademarks and trade dress that infringe, dilute or otherwise violate our trademark rights, our business could be materially adversely affected.

Many companies have encountered significant problems in protecting and defending intellectual property rights in certain jurisdictions, including China. The legal systems of some countries do not favor the enforcement of patents, trade secrets and other intellectual property, particularly those relating to biopharmaceutical products, which could make it difficult in those jurisdictions for us to stop the infringement or misappropriation of our patents or other intellectual property rights, or the marketing of competing drugs in violation of our proprietary rights.

We may not prevail in any lawsuits that we initiate and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop.

We may become involved in lawsuits to protect or enforce our intellectual property, which could be expensive, time consuming and unsuccessful. Our patent rights relating to our drug candidates could be found invalid or unenforceable if challenged in court or before the USPTO or comparable non-U.S. authority.

Competitors may infringe our patent rights or misappropriate or otherwise violate our intellectual property rights. To counter infringement or unauthorized use, litigation may be necessary in the future to enforce or defend our intellectual property rights, to protect our trade secrets or to determine the validity and scope of our own intellectual property rights or the proprietary rights of others. This can be expensive and time consuming. Any claims that we assert against perceived infringers could also provoke these parties to assert counterclaims against us alleging that we infringe their intellectual property rights. Many of our current and potential competitors have the ability to dedicate substantially greater resources to enforce and/or defend their intellectual property rights than we can. Accordingly, despite our efforts, we may not be able to prevent third parties from infringing upon or misappropriating our intellectual property. An adverse result in any litigation proceeding could put our patent, as well as any patents that may issue in the future from our pending patent applications, at risk of being invalidated, held unenforceable or interpreted narrowly. Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential information could be compromised by disclosure during this type of litigation.

In patent litigation in the United States, defendant counterclaims alleging invalidity or unenforceability are commonplace, and there are numerous grounds upon which a third party can assert invalidity or unenforceability of a patent. Third parties may also raise similar claims before administrative bodies in the United States or abroad, even outside the context of litigation. Such mechanisms include ex parte re-examination, inter partes review, post-grant review, derivation and equivalent proceedings in non-U.S. jurisdictions, such as opposition proceedings. Such proceedings could result in revocation or amendment to our patents in such a way that they no longer cover and protect our drug candidates. The outcome following legal assertions of invalidity and unenforceability is unpredictable. With respect to the validity of our patents, for example, we cannot be certain that there is no invalidating prior art of which we, our patent counsel, and the patent examiner were unaware during prosecution. If a defendant were to prevail on a legal assertion of invalidity and/or unenforceability, we would lose at least part, and perhaps all, of the patent protection on our drug candidates. Such a loss of patent protection could have a material adverse impact on our business.

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We may not be able to prevent misappropriation of our trade secrets or confidential information, particularly in countries where the laws may not protect those rights as fully as in the United States.

If we are sued for infringing intellectual property rights of third parties, such litigation could be costly and time consuming and could prevent or delay us from developing or commercializing our drug candidates.

Our commercial success depends in part on our avoiding infringement of the patents and other intellectual property rights of third parties. We are aware of numerous issued patents and pending patent applications belonging to third parties that exist in fields in which we are developing our drug candidates. There may also be third-party patents or patent applications of which we are currently unaware, and given the dynamic area in which we operate, additional patents are likely to issue that relate to aspects of our business. There is a substantial amount of litigation and other claims and proceedings involving patent and other intellectual property rights in the biotechnology and pharmaceutical industries generally. As the biotechnology and pharmaceutical industries expand and more patents are issued, the risk increases that our drug candidates may give rise to claims of infringement of the patent rights of others.

Third parties may assert that we are using technology in violation of their patent or other proprietary rights. Defense of these claims, regardless of their merit, could involve substantial litigation expense and divert our technical personnel, management personnel, or both from their normal responsibilities. Even in the absence of litigation, we may seek to obtain licenses from third parties to avoid the risks of litigation, and if a license is available, it could impose costly royalty and other fees and expenses on us.

If third parties bring successful claims against us for infringement of their intellectual property rights, we may be subject to injunctive or other equitable relief, which could prevent us from developing and commercializing one or more of our drug candidates. Defense of these claims, regardless of their merit, would involve substantial litigation expense and would be a substantial diversion of employee resources from our business. In the event of a successful claim against us of infringement or misappropriation, or a settlement by us of any such claims, we may have to pay substantial damages, including treble damages and attorneys’ fees in the case of willful infringement, pay royalties or redesign our infringing drug candidates, which may be impossible or require substantial time and cost. In the event of an adverse result in any such litigation, or even in the absence of litigation, we may need to obtain licenses from third parties to advance our research or allow commercialization of our drug candidates. Any such license might not be available on reasonable terms or at all. In the event that we are unable to obtain such a license, we would be unable to further develop and commercialize one or more of our drug candidates, which could harm our business significantly. We may also elect to enter into license agreements in order to settle patent infringement claims or to resolve disputes prior to litigation, and any such license agreements may require us to pay royalties and other fees that could significantly harm our business.

We are aware of U.S. patents with claims covering certain antibodies that are relevant to tislelizumab for which patents are expected to expire in 2023 or 2024; complexes of irreversible BTK inhibitors that are relevant to zanubrutinib for which the patent is expected to expire in 2027; and the use of PARP inhibitors to treat certain cancers that are relevant to pamiparib for which patents are expected to expire between 2027 and 2031. We are also aware of issued patents in Europe and China relevant to pamiparib. Although we believe that the relevant claims of these patents would likely be held invalid, we can provide no assurance that a court or an administrative agency would agree with our assessment. If the validity of the relevant claims of one or more of these patents were to be upheld upon a validity challenge, and our related drug candidate was to be approved for sale in the United States before the expiration of the relevant patents, we would need a license to commercialize the drug candidate in the United States before the expiration of the relevant patents. In addition, depending upon the circumstances, we may need licenses for jurisdictions outside of the United States where we wish to commercialize a particular drug candidate before the expiration of corresponding patents covering that drug candidate. In such cases, we can provide no assurance that we would be able to obtain a license or licenses on commercially reasonable terms or at all, which could materially and adversely affect our business.

Even if litigation or other proceedings are resolved in our favor, there could be public announcements of the results of hearings, motions or other interim proceedings or developments, and if securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on the market price of the ordinary shares and/or ADSs. Such litigation or proceedings could substantially increase our operating losses and reduce the resources available for development activities or any future sales, marketing or distribution activities. We may not have sufficient financial or other resources to adequately conduct such litigation or proceedings. Some of our competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can because of their greater financial resources. Uncertainties resulting from the initiation and continuation of patent litigation or other proceedings could have a material adverse effect on our ability to compete in the marketplace.

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Obtaining and maintaining our patent protection depends on compliance with various procedural, document submission, fee payment, and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for noncompliance with these requirements.

Periodic maintenance fees on any issued patent are due to be paid to the USPTO and other patent agencies in several stages over the lifetime of the patent. The USPTO and various non-U.S. governmental patent agencies require compliance with a number of procedural, documentary, fee payment, and other similar provisions during the patent application process. Although an inadvertent lapse can in many cases be cured by payment of a late fee or by other means in accordance with the applicable rules, there are situations in which noncompliance can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. Noncompliance events that could result in abandonment or lapse of a patent or patent application include failure to respond to official actions within prescribed time limits, non-payment of fees, and failure to properly legalize and submit formal documents. In any such event, our competitors might be able to enter the market, which would have a material adverse effect on our business.

If we do not obtain patent term extension and data exclusivity for any drug candidates we may develop, our business may be materially harmed.

Depending upon the timing, duration and specifics of any FDA marketing approval of any drug candidates we may develop, one or more of our U.S. patents may be eligible for limited patent term extension under the Drug Price Competition and Patent Term Restoration Action of 1984, or Hatch-Waxman Amendments. The Hatch-Waxman Amendments permit a patent extension term of up to five years as compensation for patent term lost during clinical trials and the FDA regulatory review process. A patent term extension cannot extend the remaining term of a patent beyond a total of 14 years from the date of drug approval, only one patent may be extended and only those claims covering the approved drug, a method for using it, or a method for manufacturing it may be extended. However, we may not be granted an extension because of, for example, failing to exercise due diligence during the testing phase or regulatory review process, failing to apply within applicable deadlines, failing to apply prior to expiration of relevant patents, or otherwise failing to satisfy applicable requirements. Moreover, the applicable time period or the scope of patent protection afforded could be less than we request. In addition, no patent term extension system has been established in the PRC beyond the new pilot program, and implementation of the pilot program may not occur quickly. As a result, the patents we have in the PRC are not yet eligible to be extended for patent term lost during clinical trials and the regulatory review process. If we are unable to obtain patent term extension or term of any such extension is less than we request, our competitors may obtain approval of competing products following our patent expiration, and our business, financial condition, results of operations, and prospects could be materially harmed.

Changes in patent law could diminish the value of patents in general, thereby impairing our ability to protect our drug candidates.

The United States has recently enacted and is currently implementing wide-ranging patent reform legislation. Recent U.S. Supreme Court rulings have narrowed the scope of patent protection available in certain circumstances and weakened the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events has created uncertainty with respect to the value of patents once obtained, if any. Depending on decisions by the U.S. Congress, the federal courts and the USPTO, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patents and patents that we might obtain in the future. There could be similar changes in the laws of foreign jurisdictions that may impact the value of our patent rights or our other intellectual property rights.

If we are unable to protect the confidentiality of our trade secrets, our business and competitive position would be harmed. We may be subject to claims that our employees have wrongfully used or disclosed alleged trade secrets of their former employers.

In addition to our issued patent and pending patent applications, we rely on trade secrets, including unpatented know-how, technology and other proprietary information, to maintain our competitive position and to protect our drug candidates. We seek to protect these trade secrets, in part, by entering into non-disclosure and confidentiality agreements with parties that have access to them, such as our employees, corporate collaborators, outside scientific collaborators, sponsored researchers, contract manufacturers, consultants, advisors and other third parties. We also enter into confidentiality and invention or patent assignment agreements with our employees and consultants. However, any of these parties may breach such agreements and disclose our proprietary information, and we may not be able to obtain adequate remedies for such breaches. Enforcing a claim that a party illegally disclosed or misappropriated a trade secret can be difficult, expensive and time-consuming, and the outcome is unpredictable. If any of our trade secrets were to be lawfully obtained or independently developed by a competitor, we would have no right to prevent them from using that technology or information to compete with us and our competitive position would be harmed.

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Furthermore, many of our employees, including our senior management, were previously employed at other biotechnology or pharmaceutical companies, including our competitors or potential competitors. Some of these employees, including each member of our senior management, executed proprietary rights, non-disclosure and non-competition agreements in connection with such previous employment. Although we try to ensure that our employees do not use the proprietary information or know-how of others in their work for us, we may be subject to claims that we or these employees have used or disclosed intellectual property, including trade secrets or other proprietary information, of any such employee’s former employer. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights or personnel. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management.

In addition, while we typically require our employees, consultants and contractors who may be involved in the development of intellectual property to execute agreements assigning such intellectual property to us, we may be unsuccessful in executing such an agreement with each party who in fact develops intellectual property that we regard as our own, which may result in claims by or against us related to the ownership of such intellectual property. If we fail in prosecuting or defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights. Even if we are successful in prosecuting or defending against such claims, litigation could result in substantial costs and be a distraction to our management and scientific personnel.

We may not be successful in obtaining or maintaining necessary rights for our development pipeline through acquisitions and in-licenses.

Because our programs may involve additional drug candidates that may require the use of proprietary rights held by third parties, the growth of our business may depend in part on our ability to acquire and maintain licenses or other rights to use these proprietary rights. We may be unable to acquire or in-license any compositions, methods of use, or other third-party intellectual property rights from third parties that we identify. The licensing and acquisition of third-party intellectual property rights is a competitive area, and a number of more established companies are also pursuing strategies to license or acquire third-party intellectual property rights that we may consider attractive. These established companies may have a competitive advantage over us due to their size, cash resources and greater clinical development and commercialization capabilities. If we are unable to successfully obtain rights to required third-party intellectual property rights, our business, financial condition and prospects for growth could suffer.

If we fail to comply with our obligations in the agreements under which we license intellectual property rights from third parties or otherwise experience disruptions to our business relationships with our licensors, we could be required to pay monetary damages or could lose license rights that are important to our business.

We have entered into license agreements with third parties providing us with rights under various third-party patents and patent applications. These license agreements impose diligence, development or commercialization timelines and milestone payment, royalty, insurance and other obligations on us. If we fail to comply with our obligations under our current or future license agreements, our counterparties may have the right to terminate these agreements, in which event we might not be able to develop, manufacture or market any drug or drug candidate that is covered by the licenses provided for under these agreements or we may face claims for monetary damages or other penalties under these agreements. Such an occurrence could diminish the value of these products and our company. Termination of the licenses provided for under these agreements or reduction or elimination of our rights under these agreements may result in our having to negotiate new or reinstated agreements with less favorable terms, or cause us to lose our rights under these agreements, including our rights to important intellectual property or technology.

Risks Related to Our Reliance on Third Parties

We rely on third parties to conduct our preclinical studies and clinical trials and we must work effectively with collaborators to develop our drug candidates. If these third parties do not successfully carry out their contractual duties or meet expected deadlines, we may not be able to obtain regulatory approval for or commercialize our drug candidates and our business could be substantially harmed.

We have relied upon and plan to continue to rely upon third-party CROs to monitor and manage data for our ongoing preclinical and clinical programs. We rely on these parties for execution of our preclinical studies and clinical trials, and control only certain aspects of their activities. Nevertheless, we are responsible for ensuring that each of our studies is conducted in accordance with the applicable protocol, legal and regulatory requirements and scientific standards, and our reliance on the CROs does not relieve us of our regulatory responsibilities. We, our CROs for our clinical programs and our clinical investigators are required to comply with GCPs, which are regulations and guidelines enforced by the FDA, NMPA, EMA and other comparable regulatory authorities for all of our drugs in clinical development. If we or any of our CROs or clinical investigators fail to comply with applicable GCPs and other regulatory requirements, the clinical data generated in our clinical

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trials may be deemed unreliable and the FDA, NMPA, EMA or comparable regulatory authorities may require us to perform additional clinical trials before approving our marketing applications. In addition, our pivotal clinical trials must be conducted with product produced under GMP regulations. Our failure to comply with these regulations may require us to repeat clinical trials, which would delay the regulatory approval process. We could also be subject to government investigation and enforcement actions.

If any of our relationships with these third-party CROs terminate, we may not be able to enter into arrangements with alternative CROs or to do so on commercially reasonable terms. In addition, our CROs are not our employees, and except for remedies available to us under our agreements with such CROs, we cannot control whether or not they devote sufficient time and resources to our ongoing clinical and nonclinical programs. If CROs do not successfully carry out their contractual duties or obligations or meet expected deadlines, if they need to be replaced or if the quality or accuracy of the clinical data they or our clinical investigators obtain is compromised due to the failure to adhere to our clinical protocols, regulatory requirements or for other reasons, our clinical trials may be extended, delayed or terminated and we may not be able to obtain regulatory approval for or successfully commercialize our drug candidates. As a result, our results of operations and the commercial prospects for our drug candidates would be harmed, our costs could increase and our ability to generate revenues could be delayed.

Switching or adding additional CROs involves additional cost and delays, which can materially influence our ability to meet our desired clinical development timelines. There can be no assurance that we will not encounter similar challenges or delays in the future or that these delays or challenges will not have a material adverse effect on our business, financial condition and prospects.

Our future revenues are dependent on our ability to work effectively with collaborators to develop our drug candidates, including to obtain regulatory approval. Our arrangements with collaborators will be critical to successfully bringing products to market and commercializing them. We rely on collaborators in various respects, including to undertake research and development programs and conduct clinical trials, manage or assist with the regulatory filings and approval process and to assist with our commercialization efforts. We do not control our collaborators; therefore, we cannot ensure that these third parties will adequately and timely perform all of their obligations to us. If they fail to complete the remaining studies successfully, or at all, it could delay, adversely affect or prevent regulatory approval. We cannot guarantee the satisfactory performance of any of our collaborators and if any of our collaborators breach or terminate their agreements with us, we may not be able to successfully commercialize the licensed product which could materially and adversely affect our business, financial condition, cash flows and results of operations.

We expect to rely on third parties to manufacture at least a portion of our clinical and commercial drug supplies. Our business could be harmed if those third parties fail to provide us with sufficient quantities of product or fail to do so at acceptable quality levels or prices.

Although we currently have a facility that may be used as our clinical-scale manufacturing and processing facility and are building manufacturing facilities in China, we intend to at least partially rely on outside vendors to manufacture supplies and process our drugs and drug candidates. For example, we have entered into a commercial supply agreement for tislelizumab with Boehringer Ingelheim Biopharmaceuticals (China) Ltd. In addition, we rely on Celgene and its third-party manufacturers for supply of ABRAXANE^®, REVLIMID^®, and VIDAZA^® in China. Our drug candidates have not yet been manufactured or processed on a commercial scale and we may not be able to do so for any of our drug candidates. We have limited experience in managing the manufacturing process, and our process may be more difficult or expensive than the approaches currently in use.

Although we intend to further develop our own manufacturing facilities, we also intend to use third parties as part of our manufacturing process and for the clinical and commercial supply of our drugs and drug candidates. Our anticipated reliance on a limited number of third-party manufacturers exposes us to the following risks:

• we may be unable to identify manufacturers on acceptable terms or at all because the number of potential manufacturers is limited and the FDA, NMPA, EMA or other comparable regulatory authorities must evaluate and/or approve any manufacturers as part of their regulatory oversight of our drug candidates. This evaluation would require new testing and GMP-compliance inspections by FDA, NMPA, EMA or other comparable regulatory authorities;

• our manufacturers may have little or no experience with manufacturing our drug candidates, and therefore may require a significant amount of support from us in order to implement and maintain the infrastructure and processes required to manufacture our drug candidates;

• our third-party manufacturers might be unable to timely manufacture our drugs and drug candidates or produce the quantity and quality required to meet our clinical and commercial needs, if any;

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• manufacturers are subject to ongoing periodic unannounced inspection by the FDA and corresponding state agencies in the United States to ensure strict compliance with GMPs and other government regulations and by other comparable regulatory authorities for corresponding non-U.S. requirements. We do not have control over third-party manufacturers’ compliance with these regulations and requirements;

• we may not own, or may have to share, the intellectual property rights to any improvements made by our third-party manufacturers in the manufacturing process for our drug candidates and drugs;

• raw materials and components used in the manufacturing process, particularly those for which we have no other source or supplier, may not be available or may not be suitable or acceptable for use due to material or component defects; and

• our contract manufacturers and critical drug component suppliers may be subject to disruptions in their business, including inclement weather, as well as natural or man-made disasters.

Each of these risks could delay or prevent the completion of our clinical trials or the approval of any of our drug candidates, result in higher costs or adversely impact development or commercialization of our drugs. In addition, we will rely on third parties to perform certain specification tests on our drugs and drug candidates prior to delivery to patients. If these tests are not appropriately done and test data are not reliable, patients could be put at risk of serious harm and regulatory authorities could place significant restrictions on our company until deficiencies are remedied.

Currently, the raw materials for our manufacturing activities are supplied by multiple source suppliers, although portions of our supply chain may rely on sole source suppliers. We have agreements for the supply of drug materials with manufacturers or suppliers that we believe have sufficient capacity to meet our demands. In addition, we believe that adequate alternative sources for such supplies exist. However, there is a risk that, if supplies are interrupted, it would materially harm our business.

Manufacturers of drug and biological products often encounter difficulties in production, particularly in scaling up or out, validating the production process, and assuring high reliability of the manufacturing process (including the absence of contamination). These problems include logistics and shipping, difficulties with production costs and yields, quality control, including stability of the product, product testing, operator error, availability of qualified personnel, as well as compliance with strictly enforced federal, state and non-U.S. regulations. Furthermore, if contaminants are discovered in the supply of our drugs and drug candidates or in the manufacturing facilities, such manufacturing facilities may need to be closed for an extended period of time to investigate and remedy the contamination. We cannot assure you that any stability failures or other issues relating to the manufacture of our drug candidates will not occur in the future. Additionally, our manufacturers may experience manufacturing difficulties due to resource constraints or as a result of labor disputes or unstable political environments. If our manufacturers were to encounter any of these difficulties, or otherwise fail to comply with their contractual obligations, our ability to provide our drugs for commercial sale and our drug candidates to patients in clinical trials would be jeopardized. Any delay or interruption in the supply of clinical trial supplies could delay the completion of clinical trials, increase the costs associated with maintaining clinical trial programs and, depending upon the period of delay, require us to begin new clinical trials at additional expense or terminate clinical trials completely.

If third-party manufacturers fail to comply with manufacturing regulations, our financial results and financial condition will be adversely affected.

Before a third party can begin commercial manufacture of our drugs and drug candidates, contract manufacturers are subject to regulatory inspections of their manufacturing facilities, processes and quality systems. Due to the complexity of the processes used to manufacture drug and biological products and our drug candidates, any potential third-party manufacturer may be unable to initially pass federal, state or international regulatory inspections in a cost-effective manner in order for us to obtain regulatory approval of our drug candidates. If our contract manufacturers do not pass their inspections by the relevant regulatory authorities, our commercial supply of drug product or substance will be significantly delayed and may result in significant additional costs, including the delay or denial of any marketing application for our drug candidates or disruption in sales. In addition, drug and biological manufacturing facilities are continuously subject to inspection by regulatory authorities, before and after drug approval, and must comply with GMPs. Our contract manufacturers may encounter difficulties in achieving quality control and quality assurance and may experience shortages in qualified personnel. In addition, contract manufacturers’ failure to achieve and maintain high manufacturing standards in accordance with applicable regulatory requirements, or the incidence of manufacturing errors, could result in patient injury, product liability claims, product shortages, product recalls or withdrawals, delays or failures in product testing or delivery, cost overruns or other problems that could seriously harm our business. If a third-party manufacturer with whom we contract is unable to comply with manufacturing regulations, we may also be subject to fines, unanticipated compliance expenses, recall or seizure of our drugs, product liability claims, total or partial suspension of production and/or enforcement actions, including injunctions, and

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criminal or civil prosecution. These possible sanctions could materially adversely affect our financial results and financial condition.

Furthermore, changes in the manufacturing process or procedure, including a change in the location where the product is manufactured or a change of a third-party manufacturer, could require prior review by regulatory authorities and/or approval of the manufacturing process and procedures in accordance with applicable requirements. This review may be costly and time consuming and could delay or prevent the launch of a product or impact commercialization of approved drugs. The new facility will also be subject to pre-approval inspection. In addition, we have to demonstrate that the product made at the new facility is equivalent to the product made at the former facility by physical and chemical methods, which are costly and time consuming. It is also possible that regulatory authorities may require clinical testing as a way to prove equivalency, which would result in additional costs and delay.

We have entered into collaborations and may form or seek collaborations or strategic alliances or enter into additional licensing arrangements in the future, and we may not realize the benefits of such collaborations, alliances or licensing arrangements.

We may form or seek strategic alliances, create joint ventures or collaborations, or enter into additional licensing arrangements with third parties that we believe will complement or augment our research, development and commercialization efforts with respect to our drug candidates and any future drug candidates that we may develop. Any of these relationships may require us to incur non-recurring and other charges, increase our near and long-term expenditures, issue securities that dilute our existing shareholders, or disrupt our management and business.

Our strategic collaboration with Celgene involves numerous risks. There can be no assurance that we will be able to successfully manage and integrate Celgene’s commercial operations in China and its personnel into our business, which could disrupt our business and harm our financial results. Moreover, we may not achieve the revenue and cost synergies expected from our collaboration with Celgene for their commercial products in China and the joint development of tislelizumab outside of Asia (other than Japan), and our management’s attention may be diverted from our drug discovery and development business. These synergies are inherently uncertain, and are subject to significant business, economic and competitive uncertainties and contingencies, many of which are difficult to predict and are beyond our control. If we achieve the expected benefits, they may not be achieved within the anticipated time frame. Also, the synergies from our collaboration with Celgene may be offset by costs incurred in integrating Celgene’s commercial operations in China, increases in other expenses, operating losses or problems in the business unrelated to our collaboration with Celgene. As a result, there can be no assurance that these synergies will be achieved. Lastly, strategic collaborations can be terminated for various reasons. For example, in January 2019, Celgene announced that it was expected to be acquired by Bristol-Myers Squibb Company and in April 2019, shareholders of Bristol-Meyers Squibb company approved the acquisition which is expected to close in the third quarter of 2019. As a result of this transaction, our licensing agreement with Celgene for tislelizumab may be terminated.

We face significant competition in seeking appropriate strategic partners and the negotiation process is time-consuming and complex. Moreover, we may not be successful in our efforts to establish a strategic partnership or other alternative arrangements for our drug candidates because they may be deemed to be at too early of a stage of development for collaborative effort and third parties may not view our drug candidates as having the requisite potential to demonstrate safety and efficacy or commercial viability. If and when we collaborate with a third party for development and commercialization of a drug candidate, we can expect to relinquish some or all of the control over the future success of that drug candidate to the third party. For any drugs or drug candidates that we may seek to in-license from third parties, we may face significant competition from other pharmaceutical or biotechnology companies with greater resources or capabilities than us, and any agreement that we do enter may result in the anticipated benefits.

Further, collaborations involving our drugs and drug candidates are subject to numerous risks, which may include the following:

• collaborators have significant discretion in determining the efforts and resources that they will apply to a collaboration;

• collaborators may not pursue development and commercialization of our drug candidates or may elect not to continue or renew development or commercialization programs based on clinical trial results, changes in their strategic focus due to the acquisition of competitive drugs, availability of funding, or other external factors, such as a business combination that diverts resources or creates competing priorities;

• collaborators may delay clinical trials, provide insufficient funding for a clinical trial, stop a clinical trial, abandon a drug candidate, repeat or conduct new clinical trials, or require a new formulation of a drug candidate for clinical testing;

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• collaborators could independently develop, or develop with third parties, drugs that compete directly or indirectly with our drugs or drug candidates;

• a collaborator with marketing and distribution rights to one or more drugs may not commit sufficient resources to their marketing and distribution;

• collaborators may not properly maintain or defend our intellectual property rights or may use our intellectual property or proprietary information in a way that gives rise to actual or threatened litigation that could jeopardize or invalidate our intellectual property or proprietary information or expose us to potential liability;

• disputes may arise between us and a collaborator that cause the delay or termination of the research, development or commercialization of our drug candidates, or that result in costly litigation or arbitration that diverts management attention and resources;

• collaborations may be terminated and, if terminated, may result in a need for additional capital to pursue further development or commercialization of the applicable drug candidates; and

• collaborators may own or co-own intellectual property covering our drugs that results from our collaborating with them, and in such cases, we would not have the exclusive right to commercialize such intellectual property.

As a result, we may not be able to realize the benefit of current or future collaborations, strategic partnerships or the license of our third-party drugs if we are unable to successfully integrate such products with our existing operations and company culture, which could delay our timelines or otherwise adversely affect our business. We also cannot be certain that, following a strategic transaction or license, we will achieve the revenue or specific net income that justifies such transaction. If we are unable to reach agreements with suitable collaborators on a timely basis, on acceptable terms, or at all, we may have to curtail the development of a drug candidate, reduce or delay its development program or one or more of our other development programs, delay its potential commercialization or reduce the scope of any sales or marketing activities, or increase our expenditures and undertake development or commercialization activities at our own expense. If we elect to fund and undertake development or commercialization activities on our own, we may need to obtain additional expertise and additional capital, which may not be available to us on acceptable terms or at all. If we fail to enter into collaborations and do not have sufficient funds or expertise to undertake the necessary development and commercialization activities, we may not be able to further develop our drug candidates or bring them to market and generate product sales revenue, which would harm our business prospects, financial condition and results of operations.

If we fail to maintain an effective distribution channel for our products, our business and sales of the relevant products could be adversely affected.

We rely on a third-party distributor to distribute Celgene’s approved cancer therapies, ABRAXANE^®, REVLIMID^®, and VIDAZA^®, and we expect to rely on third-party distributors for the distribution of our internally developed drug products, if approved. Our ability to maintain and grow our business will depend on our ability to maintain an effective distribution channel that ensures the timely delivery of our products to the relevant markets where we generate market demand through our sales and marketing activities. However, we have relatively limited control over our distributors, who may fail to distribute our products in the manner we contemplate. While we have long-standing business relationship with our distributor for the in-licensed products from Celgene, the agreement we entered into with our distributor can be terminated by both parties upon six months’ written notice. If PRC price controls or other factors substantially reduce the margins our distributor can obtain through the resale of our products to hospitals, medical institutions and sub-distributors, it may terminate its relationship with us. As of the date of this report, we rely on one distributor to distribute our products. While we believe alternative distributors are readily available in China, there is a risk that, if the distribution of our drugs is interrupted, our sales volumes and business prospects could be adversely affected.

We may be restricted from transferring our scientific data abroad.

In March 2018, the General Office of the State Council promulgated the Measures for the Management of Scientific Data, or the Scientific Data Measures, which provides a broad definition of scientific data and relevant rules for the management of scientific data in China. According to the Scientific Data Measures, enterprises in China must seek governmental approval before any scientific data involving a state secret may be transferred abroad or to foreign parties. Further, any researcher conducting research funded at least in part by the Chinese government is required to submit relevant scientific data for management by the entity to which such researcher is affiliated before such data may be published in any foreign academic journal. Given that the term state secret is not clearly defined, if and to the extent our research and development of drug candidates will be subject to the Scientific Data Measures and any subsequent laws as required by the relevant government authorities, we cannot assure you that we can always obtain relevant approvals for sending scientific data (such as the results of

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our preclinical studies or clinical trials conducted within China) abroad or to our foreign partners in China. If we are unable to obtain necessary approvals in a timely manner, or at all, our research and development of drug candidates may be hindered, which may materially and adversely affect our business, results of operations, financial condition and prospects. If the relevant government authorities consider the transmission of our scientific data to be in violation of the requirements under the Scientific Data Measures, we may be subject to fines and other administrative penalties imposed by those government authorities.

Risks Related to Our Industry, Business and Operations

Our future success depends on our ability to retain key executives and to attract, retain and motivate qualified personnel.

We are highly dependent on Xiaodong Wang, Ph.D., our Co-Founder, Chairman of our scientific advisory board, which may from time to time provide us assistance upon our request, and director; John V. Oyler, our Co-Founder, Chief Executive Officer and Chairman of the board of directors; and the other principal members of our management and scientific teams. Although we have formal employment agreements or offer letters with each of our executive officers, these agreements do not prevent our executives from terminating their employment with us at any time. We do not maintain “key person” insurance for any of our executives or other employees. The loss of the services of any of these persons could impede the achievement of our research, development and commercialization objectives.

To induce valuable employees to remain at our company, in addition to salary and cash incentives, we have provided share option, restricted share unit and restricted share grants that vest over time. The value to employees of these equity grants that vest over time may be significantly affected by movements in the ADS and/or ordinary share price that are beyond our control, and may at any time be insufficient to counteract more lucrative offers from other companies. Although we have employment agreements or offer letters with our key employees, any of our employees could leave our employment at any time, with or without notice.

Recruiting and retaining qualified scientific, clinical, manufacturing and sales and marketing personnel will also be critical to our success. In addition, we rely on consultants and advisors, including scientific and clinical advisors, to assist us in formulating and executing our discovery, clinical development, manufacturing and commercialization strategy. The loss of the services of our executive officers or other key employees and consultants could impede the achievement of our research, development, manufacturing and commercialization objectives and seriously harm our ability to successfully implement our business strategy.

Furthermore, replacing executive officers, key employees or consultants may be difficult and may take an extended period of time because of the limited number of individuals in our industry with the breadth of skills and experience required to successfully develop, gain regulatory approval of and commercialize products. Competition to hire from this limited pool is intense, and we may be unable to hire, train, retain or motivate these key personnel or consultants on acceptable terms given the competition among numerous pharmaceutical and biotechnology companies for similar personnel.

We also experience competition for the hiring of scientific and clinical personnel from universities and research institutions. Our consultants and advisors may be employed by employers other than us and may have commitments under consulting or advisory contracts with other entities that may limit their availability to us. If we are unable to continue to attract and retain high quality personnel, our ability to pursue our growth strategy will be limited.

We have significantly increased the size and capabilities of our organization, and we may experience difficulties in managing our growth.

At the beginning of 2018, we had 876 employees, and we ended the year with 2,070 employees, an increase of approximately 136%. As of March 31, 2019, we had approximately 2,400 employees. Most of our employees are full-time. As our research, development, manufacturing and commercialization plans and strategies evolve, we must add a significant number of additional managerial, operational, manufacturing, sales, marketing, financial and other personnel. Our recent growth and any future growth will impose significant added responsibilities on members of management, including:

• identifying, recruiting, integrating, maintaining, and motivating additional employees;

• managing our internal development efforts effectively, including the clinical and regulatory authority review process for our drug candidates, while complying with our contractual obligations to contractors and other third parties; and

• improving our operational, financial and management controls, reporting systems and procedures.

Our future financial performance and our ability to develop and commercialize our drugs and drug candidates will depend, in part, on our ability to effectively manage our recent growth and any future growth, and our management may also have to

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divert a disproportionate amount of its attention away from day-to-day activities in order to devote a substantial amount of time to managing these growth activities.

We currently rely, and for the foreseeable future will continue to rely, on certain independent organizations, advisors and consultants to provide certain services. There can be no assurance that the services of these independent organizations, advisors and consultants will continue to be available to us on a timely basis when needed, or that we can find qualified replacements. There can be no assurance that we will be able to manage our existing consultants or find other competent outside contractors and consultants on economically reasonable terms, if at all.

If we are not able to effectively manage our growth and further expand our organization by hiring new employees and expanding our groups of consultants and contractors as needed, we may not be able to successfully implement the tasks necessary to further develop, manufacture and commercialize our drugs and drug candidates and, accordingly, may not achieve our research, development, manufacturing and commercialization goals.

We incur significant costs as a result of operating as a public company in the United States and Hong Kong, and our management is required to devote substantial time to compliance requirements, including establishing and maintaining internal controls over financial reporting. We may be exposed to potential risks if we are unable to comply with these requirements.

As a public company in the United States and Hong Kong, we are subject to the reporting requirements of the Securities Exchange Act of 1934, as amended, or the Exchange Act, and the listing rules of the Nasdaq Stock Market, or Nasdaq, and the Stock Exchange of Hong Kong Ltd., or HKEx, and incur significant legal, accounting and other expenses under the Sarbanes-Oxley Act of 2002, or Sarbanes-Oxley Act, together with rules implemented by the U.S. Securities and Exchange Commission, or SEC, and applicable market regulators, and the listing rules of the Nasdaq and HKEx. These rules impose various requirements on public companies, including requiring certain corporate governance practices. Our management and other personnel devote a substantial amount of time to these requirements. Moreover, these rules and regulations increase our legal and financial compliance costs and make some activities more time-consuming and costly.

For example, the Sarbanes-Oxley Act requires, among other things, that we maintain effective internal controls for financial reporting and disclosure controls and procedures. In particular, we must perform system and process evaluations and testing of our internal controls over financial reporting to allow management to report on the effectiveness of our internal controls over financial reporting, as required by Section 404 of the Sarbanes-Oxley Act. We have limited experience complying with Section 404, and such compliance may require that we incur substantial accounting expenses and expend significant management efforts. Our testing may reveal deficiencies in our internal controls over financial reporting that are deemed to be material weaknesses. In the event we identify significant deficiencies or material weaknesses in our internal controls that we cannot remediate in a timely manner, the market price of our ordinary shares and/or ADSs could decline if investors and others lose confidence in the reliability of our financial statements, we could be subject to sanctions or investigations by the SEC, HKEx or other applicable regulatory authorities and our business could be harmed.

If we engage in acquisitions or strategic partnerships, this may increase our capital requirements, dilute our shareholders, cause us to incur debt or assume contingent liabilities, and subject us to other risks.

From time to time, we may evaluate various acquisitions and strategic partnerships, including licensing or acquiring complementary products, intellectual property rights, technologies or businesses. Any completed, in-process or potential acquisition or strategic partnership may entail numerous risks, including:

• increased operating expenses and cash requirements;

• the assumption of additional indebtedness or contingent or unforeseen liabilities;

• the issuance of our equity securities;

• assimilation of operations, intellectual property and products of an acquired company, including difficulties associated with integrating new personnel;

• the diversion of our management’s attention from our existing product programs and initiatives in pursuing such a strategic merger or acquisition;

• retention of key employees, the loss of key personnel, and uncertainties in our ability to maintain key business relationships;

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• risks and uncertainties associated with the other party to such a transaction, including the prospects of that party and their existing drugs or drug candidates and regulatory approvals; and

• our inability to generate revenue from acquired technology and/or products sufficient to meet our objectives in undertaking the acquisition or even to offset the associated acquisition and maintenance costs.

In addition, if we undertake acquisitions, we may issue dilutive securities, assume or incur debt obligations, incur large one-time expenses and acquire intangible assets that could result in significant future amortization expense.

PRC regulations and rules concerning mergers and acquisitions, including the Regulations on Mergers and Acquisitions of Domestic Companies by Foreign Investors, or the M&A Rules, and other recently adopted regulations and rules with respect to mergers and acquisitions established additional procedures and requirements that could make merger and acquisition activities by foreign investors more time consuming and complex. For example, the M&A Rules require that the Ministry of Commerce of the PRC, or the MOFCOM, be notified in advance of any change-of-control transaction in which a foreign investor takes control of a PRC domestic enterprise, if (i) any important industry is concerned, (ii) such transaction involves factors that have or may have impact on the national economic security, or (iii) such transaction will lead to a change in control of a domestic enterprise which holds a famous trademark or PRC time-honored brand. Moreover, according to the Anti-Monopoly Law of PRC and the Provisions on Thresholds for Prior Notification of Concentrations of Undertakings, or the Prior Notification Rules issued by the State Council, the concentration of business undertakings by way of mergers, acquisitions or contractual arrangements that allow one market player to take control of or to exert decisive impact on another market player must also be notified in advance to the State Administration of Market Regulation, or SAMR, when the threshold is crossed and such concentration shall not be implemented without the clearance of prior notification. In addition, the Regulations on Implementation of Security Review System for the Merger and Acquisition of Domestic Enterprise by Foreign Investors, or the Security Review Rules, issued by the MOFCOM specify that mergers and acquisitions by foreign investors that raise “national defense and security” concerns and mergers and acquisitions through which foreign investors may acquire the de facto control over domestic enterprises that raise “national security” concerns are subject to strict review by the MOFCOM, and the rules prohibit any activities attempting to bypass a security review by structuring the transaction through, among other things, trusts, entrustment or contractual control arrangements.

We may also be subject to similar review and regulations in other jurisdictions, such as the laws and regulations on foreign investment in the United States under the jurisdiction of the Committee on Foreign Investment in the United States, or CFIUS, and other agencies, including the Foreign Investment Risk Review Modernization Act, or FIRRMA, adopted in August 2018

In the future, we may grow our business by acquiring complementary businesses. Complying with the requirements of the above-mentioned regulations and other relevant rules to complete such transactions could be time consuming, and any required approval processes, including obtaining approval from CFIUS, the SAMR, the MOFCOM or its local counterparts may delay or inhibit our ability to complete such transactions. It is unclear whether those complementary businesses we may acquire in the future would be deemed to be in an industry that raises “national defense and security” or “national security” concerns. However, CFIUS, MOFCOM or other government agencies may publish explanations in the future determining that certain of the complementary business is in an industry subject to the security review, in which case our future acquisitions in the United States and the PRC, including those by way of entering into contractual control arrangements with target entities, may be closely scrutinized or prohibited. Our ability to expand our business or maintain or expand our market share through future acquisitions would as such be materially and adversely affected.

If we fail to comply with the U.S. Foreign Corrupt Practices Act or other anti-bribery and corruption laws, our reputation may be harmed and we could be subject to penalties and significant expenses that have a material adverse effect on our business, financial condition and results of operations.

We are subject to the Foreign Corrupt Practices Act, or FCPA. The FCPA generally prohibits us from making improper payments to non-U.S. officials for the purpose of obtaining or retaining business. We are also subject to the anti-bribery and corruption laws of other jurisdictions, particularly China. As our business has expanded, the applicability of the FCPA and other anti-bribery and corruption laws to our operations has increased.

We do not fully control the interactions our employees, distributors and third-party promoters have with hospitals, medical institutions and doctors, and they may try to increase sales volumes of our products through means that constitute violations of U.S., PRC or other countries' anti-corruption and related laws. If our employees, distributors or third-party promoters engage in corrupt or other improper conduct that results in violation of applicable anti-corruption laws in the U.S., PRC or other jurisdictions, our reputation could be harmed. Furthermore, we could be held liable for actions taken by our employees, distributors or third-party promoters, which could expose us to regulatory investigations and penalties.

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Our procedures and controls to monitor anti-bribery and corruption compliance may fail to protect us from reckless or criminal acts committed by our employees or agents. If we, due to either our own deliberate or inadvertent acts or those of others, fail to comply with applicable anti-bribery and corruption laws, our reputation could be harmed and we could incur criminal or civil penalties, other sanctions and/or significant expenses, which could have a material adverse effect on our business, including our financial condition, results of operations, cash flows and prospects.

If we or our CROs or contract manufacturing organizations, or CMOs, fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or penalties or incur costs that could have a material adverse effect on the success of our business.

We and third parties, such as our CROs or CMOs, are subject to numerous environmental, health and safety laws and regulations, including those governing laboratory procedures and the handling, use, storage, treatment and disposal of hazardous materials and wastes. In addition, our construction projects can only be put into operation after certain regulatory procedures with the relevant administrative authorities in charge of environmental protection, health and safety have been completed. Our operations involve the use of hazardous and flammable materials, including chemicals and biological materials. Our operations also produce hazardous waste products. We generally contract with third parties for the disposal of these materials and wastes. We cannot eliminate the risk of contamination or injury from these materials. In the event of contamination or injury resulting from our use of hazardous materials, we could be held liable for any resulting damages, and any liability could exceed our resources. We also could incur significant costs associated with civil or criminal fines and penalties.

Although we maintain workers’ compensation insurance to cover us for costs and expenses that we may incur due to injuries to our employees resulting from the use of or exposure to hazardous materials, this insurance may not provide adequate coverage against potential liabilities. We do not maintain insurance for environmental liability or toxic tort claims that may be asserted against us in connection with our storage, use or disposal of biological or hazardous materials.

In addition, we may be required to incur substantial costs to comply with current or future environmental, health and safety laws and regulations. These current or future laws and regulations may impair our research, development or production efforts. Failure to comply with these laws and regulations also may result in substantial fines, penalties or other sanctions.

Our internal computer systems, or those used by our CROs, CMOs or other contractors or consultants, may fail or suffer security breaches.

Despite the implementation of security measures, our internal computer systems and those of our CROs, CMOs and other contractors and consultants are vulnerable to damage from computer viruses and unauthorized access. Although to our knowledge we have not experienced any material system failure or security breach to date, if such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our research, development, manufacturing, and commercialization efforts and our business operations.

In the ordinary course of our business, we collect and store sensitive data, including, among other things, legally protected patient health information, personally identifiable information about our employees, intellectual property, and proprietary business information. We manage and maintain our applications and data utilizing on-site systems and outsourced vendors. These applications and data encompass a wide variety of business-critical information including research and development information, commercial information and business and financial information. Because information systems, networks and other technologies are critical to many of our operating activities, shutdowns or service disruptions at our company or vendors that provide information systems, networks, or other services to us pose increasing risks. Such disruptions may be caused by events such as computer hacking, phishing attacks, ransomware, dissemination of computer viruses, worms and other destructive or disruptive software, denial of service attacks and other malicious activity, as well as power outages, natural disasters (including extreme weather), terrorist attacks or other similar events. Such events could have an adverse impact on us and our business, including loss of data and damage to equipment and data. In addition, system redundancy may be ineffective or inadequate, and our disaster recovery planning may not be sufficient to cover all eventualities. Significant events could result in a disruption of our operations, damage to our reputation or a loss of revenues. In addition, we may not have adequate insurance coverage to compensate for any losses associated with such events.

We could be subject to risks caused by misappropriation, misuse, leakage, falsification or intentional or accidental release or loss of information maintained in the information systems and networks of our company and our vendors, including personal information of our employees and patients, and company and vendor confidential data. In addition, outside parties may attempt to penetrate our systems or those of our vendors or fraudulently induce our personnel or the personnel of our vendors to disclose sensitive information in order to gain access to our data and/or systems. Like other companies, we have on occasion experienced, and will continue to experience, threats to our data and systems, including malicious codes and viruses, phishing, business email compromise attacks, or other cyber-attacks. The number and complexity of these threats continue to increase

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over time. If a material breach of our information technology systems or those of our vendors occurs, the market perception of the effectiveness of our security measures could be harmed and our reputation and credibility could be damaged. We could be required to expend significant amounts of money and other resources to respond to these threats or breaches and to repair or replace information systems or networks, and could suffer financial loss or the loss of valuable confidential information. In addition, we could be subject to regulatory actions and/or claims made by individuals and groups in private litigation involving privacy issues related to data collection and use practices and other data privacy laws and regulations, including claims for misuse or inappropriate disclosure of data, as well as unfair or deceptive practices. Although we develop and maintain systems and controls designed to prevent these events from occurring, and we have a process to identify and mitigate threats, the development and maintenance of these systems, controls and processes is costly and requires ongoing monitoring and updating as technologies change and efforts to overcome security measures become increasingly sophisticated. Moreover, despite our efforts, the possibility of these events occurring cannot be eliminated entirely. As we outsource more of our information systems to vendors, engage in more electronic transactions with payors and patients, and rely more on cloud-based information systems, the related security risks will increase and we will need to expend additional resources to protect our technology and information systems.

Our failure to comply with data protection laws and regulations could lead to government enforcement actions and significant penalties against us, and adversely impact our operating results.

The regulatory framework for the collection, use, safeguarding, sharing, transfer and other processing of personal information worldwide is rapidly evolving and is likely to remain uncertain for the foreseeable future. Regulatory authorities in virtually every jurisdiction in which we operate have implemented and are considering a number of legislative and regulatory proposals concerning personal data protection.

In the United States, we are subject to laws and regulations that address privacy, personal information protection and data security at both the federal and state levels. Numerous laws and regulations, including security breach notification laws, health information privacy laws, and consumer protection laws, govern the collection, use, disclosure and protection of health-related and other personal information. Given the variability and evolving state of these laws, we face uncertainty as to the exact interpretation of the new requirements, and we may be unsuccessful in implementing all measures required by regulators or courts in their interpretation.

Regulatory authorities in Europe have implemented and are considering a number of legislative and regulatory proposals concerning data protection. For example, the General Data Protection Regulation (EU) 2016/679 ("GDPR"), which became effective in May 2018, imposes a broad range of strict requirements on companies subject to the GDPR, such as us, including, but not limited to, requirements relating to having legal bases for processing personal information relating to identifiable individuals and transferring such information outside the European Economic Area (including to the United States), providing details to those individuals regarding the processing of their personal information, keeping personal information secure, having data processing agreements with third parties who process personal information, responding to individuals’ requests to exercise their rights in respect of their personal information, reporting security breaches involving personal data to the competent national data protection authority and affected individuals, and recordkeeping. The GDPR substantially increases the penalties to which we could be subject in the event of any non-compliance, including fines of up to 10,000,000 Euros or up to 2% of our total worldwide annual turnover for certain comparatively minor offenses, or up to 20,000,000 Euros or up to 4% of our total worldwide annual turnover for more serious offenses. Given the new law, we face uncertainty as to the exact interpretation of the new requirements, and we may be unsuccessful in implementing all measures required by data protection authorities or courts in interpretation of the new law. National laws of member states of the EU are in the process of being adapted to the requirements under the GDPR. Because the GDPR specifically gives member states flexibility with respect to certain matters, national laws may partially deviate from the GDPR and impose different obligations from country to country, leading to additional complexity and uncertainty.

Regulatory authorities in China have implemented and are considering a number of legislative and regulatory proposals concerning data protection. For example, China’s Cyber Security Law, which became effective in June 2017, created China’s first national-level data protection for “network operators,” which may include all organizations in China that provide services over the internet or another information network. Numerous regulations, guidelines and other measures are expected to be adopted under the umbrella of the Cyber Security Law. Drafts of some of these measures have now been published, including the draft rules on cross-border transfers published by the China Cyberspace Administration in 2017, which may, upon enactment, require security review before transferring human health-related data out of China. In addition, certain industry-specific laws and regulations affect the collection and transfer of personal data in China. The Interim Measures for the Administration of Human Genetic Resources and implementation guidelines issued by the Ministry of Science and Technology, for example, require approval from the Ministry of Science and Technology before the commencement of clinical trials where foreign sponsors and their Chinese clinical trial sites obtain human genetic resources, or HGR, in China and additional approval

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for any export or cross-border transfer of the HGR samples or associated data. See “Part I-Item 1-Business-Government Regulation-PRC Regulation-Human Genetic Resources Approval” of our annual report on Form 10-K for the year ended December 31, 2018. It is possible that these laws may be interpreted and applied in a manner that is inconsistent with our practices, potentially resulting in confiscation of HGR samples and associated data and administrative fines. In addition, the interpretation and application of data protection laws in China and elsewhere are often uncertain and in flux.

We expect that we will continue to face uncertainty as to whether our efforts to comply with evolving obligations under global data protection, privacy and security laws will be sufficient. Any failure or perceived failure by us to comply with applicable laws and regulations could result in reputational damage or proceedings or actions against us by governmental entities, individuals or others. These proceedings or actions could subject us to significant civil or criminal penalties and negative publicity, result in the delayed or halted transfer or confiscation of certain personal information, require us to change our business practices, increase our costs and materially harm our business, prospects, financial condition and results of operations. In addition, our current and future relationships with customers, vendors, pharmaceutical partners and other third parties could be negatively affected by any proceedings or actions against us or current or future data protection obligations imposed on them under applicable law, including the GDPR and Cyber Security Law. In addition, a data breach affecting personal information, including health information, could result in significant management resources, legal and financial exposure and reputational damage that could potentially have an adverse effect on our business.

If we or parties on whom we rely fail to maintain the necessary licenses for the development, production, sales and distribution of our products, our ability to conduct our business could be materially impaired.

We are required to obtain, maintain and renew various permits, licenses and certificates to develop, produce, promote and sell our products. Third parties, such as distributors, third-party promoters and third-party manufacturers, on whom we may rely to develop, produce, promote, sell and distribute our products may be subject to similar requirements. We and third parties on whom we rely may be also subject to regular inspections, examinations, inquiries or audits by the regulatory authorities, and an adverse outcome of such inspections, examinations, inquiries or audits may result in the loss or non-renewal of the relevant permits, licenses and certificates. Moreover, the criteria used in reviewing applications for, or renewals of permits, licenses and certificates may change from time to time, and there can be no assurance that we or the parties on whom we rely will be able to meet new criteria that may be imposed to obtain or renew the necessary permits, licenses and certificates. Many of such permits, licenses and certificates are material to the operation of our business, and if we or parties on whom we rely fail to maintain or renew material permits, licenses and certificates, our ability to conduct our business could be materially impaired. Furthermore, if the interpretation or implementation of existing laws and regulations change, or new regulations come into effect, requiring us or parties on whom we rely to obtain any additional permits, licenses or certificates that were previously not required to operate our business, there can be no assurance that we or parties on whom we rely will successfully obtain such permits, licenses or certificates.

Business disruptions could seriously harm our future revenue and financial condition and increase our costs and expenses.

Our operations, and those of our third-party research institution collaborators, CROs, CMOs, suppliers and other contractors and consultants, could be subject natural or man-made disasters or business interruptions, for which we are predominantly self-insured. In addition, we partially rely on our third-party research institution collaborators for conducting research and development of our drug candidates, and they may be affected by government shutdowns or withdrawn funding. The occurrence of any of these business disruptions could seriously harm our operations and financial condition and increase our costs and expenses. We partially rely on third-party manufacturers to produce and process our drugs and drug candidates. Our ability to obtain supplies of our drugs and drug candidates could be disrupted if the operations of these suppliers are affected by a man-made or natural disaster or other business interruption. Damage or extended periods of interruption to our or our vendors' corporate, development, research or manufacturing facilities due to fire, natural disaster, power loss, communications failure, unauthorized entry or other events could cause us to cease or delay development or commercialization of some or all of our drug candidates. Although we maintain property damage and business interruption insurance coverage on these facilities, our insurance might not cover all losses under such circumstances and our business may be seriously harmed by such delays and interruption.

Product liability claims or lawsuits could cause us to incur substantial liabilities.

We face an inherent risk of product liability as a result of the commercialization of our drugs in China and the clinical testing and any future commercialization of our drug candidates globally. For example, we may be sued if our drugs or drug candidates cause or are perceived to cause injury or are found to be otherwise unsuitable during clinical testing, manufacturing, marketing or sale. Any such product liability claims may include allegations of defects in manufacturing, defects in design, a failure to warn of dangers inherent in the drug, negligence, strict liability or a breach of warranties. Claims could also be asserted under applicable consumer protection acts. If we cannot successfully defend ourselves against or obtain

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indemnification from our collaborators for product liability claims, we may incur substantial liabilities or be required to limit commercialization of our drugs and drug candidates. Even successful defense would require significant financial and management resources. Regardless of the merits or eventual outcome, liability claims may result in: decreased demand for our drugs; injury to our reputation; withdrawal of clinical trial participants and inability to continue clinical trials; initiation of investigations by regulators; costs to defend the related litigation; a diversion of management’s time and our resources; substantial monetary awards to trial participants or patients; product recalls, withdrawals or labeling, marketing or promotional restrictions; loss of revenue; exhaustion of any available insurance and our capital resources; the inability to commercialize any drug candidate; and a decline in our ADS or ordinary share price.

Our inability to obtain sufficient product liability insurance at an acceptable cost to protect against potential product liability claims could prevent or inhibit the commercialization of our drugs and drug candidates. Although we currently hold product liability coverage which we believe to be sufficient in light of our current products and clinical programs, the amount of such insurance coverage may not be adequate, and we may be unable to maintain such insurance at a reasonable cost or in an amount adequate to satisfy any liability that may arise, or we may not be able to obtain additional or replacement insurance at a reasonable cost, if at all. Our insurance policies may also have various exclusions, and we may be subject to a product liability claim for which we have no coverage. We may have to pay any amounts awarded by a court or negotiated in a settlement that exceed our coverage limitations or that are not covered by our insurance, and we may not have, or be able to obtain, sufficient capital to pay such amounts. Even if our agreements with any future collaborators entitle us to indemnification against losses, such indemnification may not be available or adequate should any claim arise.

We are subject to the risks of doing business globally.

Because we operate in China and other countries outside of the United States, our business is subject to risks associated with doing business globally. Accordingly, our business and financial results in the future could be adversely affected due to a variety of factors, including: changes in a specific country’s or region’s political and cultural climate or economic condition; unexpected changes in laws and regulatory requirements in local jurisdictions; difficulty of effective enforcement of contractual provisions in local jurisdictions; inadequate intellectual property protection in certain countries; enforcement of anti-corruption and anti-bribery laws, such as the FCPA; trade-protection measures or disputes, import or export licensing requirements such as Export Administration Regulations promulgated by the United States Department of Commerce and fines, penalties or suspension or revocation of export privileges; laws and regulations on foreign investment in the United States under the jurisdiction of the Committee on Foreign Investment in the United States, or CFIUS, and other agencies, including the Foreign Investment Risk Review Modernization Act, or FIRRMA, adopted in August 2018; the effects of applicable local tax regimes and potentially adverse tax consequences; and significant adverse changes in local currency exchange rates.

We manufacture and intend to continue to manufacture ourselves at least a portion of our drug candidates and our drugs, if approved. Delays in completing and receiving regulatory approvals for our manufacturing facilities, or damage to, destruction of or interruption of production at such facilities, could delay our development plans or commercialization efforts.

We currently have manufacturing facilities in Beijing and Suzhou, China and are building a biologics manufacturing facility in Guangzhou, China. These facilities may encounter unanticipated delays and expenses due to a number of factors, including regulatory requirements. If construction, regulatory evaluation and/or approval of our facilities are delayed, we may not be able to manufacture sufficient quantities of our drug candidates and our drugs, if approved, which would limit our development and commercialization activities and our opportunities for growth. Cost overruns associated with constructing or maintaining our facilities could require us to raise additional funds from other sources.

In addition to the similar manufacturing risks described in “-Risks Related to Our Reliance on Third Parties,” our manufacturing facilities will be subject to inspection in connection with new drug approvals and ongoing, periodic inspection by the FDA, NMPA, EMA or other comparable regulatory agencies to ensure compliance with GMP and other regulatory requirements. Our failure to follow and document our adherence to such GMP regulations or other regulatory requirements may lead to significant delays in the availability of products for clinical or commercial use, may result in the termination of or a hold on a clinical trial, or may delay or prevent filing or approval of marketing applications for our drug candidates or the commercialization of our drugs, if approved. We also may encounter problems with the following:

• achieving adequate or clinical-grade materials that meet FDA, NMPA, EMA or other comparable regulatory agency standards or specifications with consistent and acceptable production yield and costs;

• shortages of qualified personnel, raw materials or key contractors; and

• ongoing compliance with GMP regulations and other requirements of the FDA, NMPA, EMA or other comparable regulatory agencies.

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Failure to comply with applicable regulations could also result in sanctions being imposed on us, including fines, injunctions, civil penalties, a requirement to suspend or put on hold one or more of our clinical trials, failure of regulatory authorities to grant marketing approval of our drug candidates, delays, suspension or withdrawal of approvals, supply disruptions, license revocation, seizures or recalls of drug candidates or drugs, operating restrictions and criminal prosecutions, any of which could harm our business.

Developing advanced manufacturing techniques and process controls is required to fully utilize our facilities. Advances in manufacturing techniques may render our facilities and equipment inadequate or obsolete.

To produce our drugs in the quantities that we believe will be required to meet anticipated market demand of our drug candidates if approved, we will need to increase, or “scale up,” the production process by a significant factor over the initial level of production. If we are unable to do so, are delayed, or if the cost of this scale up is not economically feasible for us or we cannot find a third-party supplier, we may not be able to produce our drugs in a sufficient quantity to meet future demand.

In addition to the similar manufacturing risks described in “-Risks Related to Our Reliance on Third Parties,” if our manufacturing facilities or the equipment in them is damaged or destroyed, we may not be able to quickly or inexpensively replace our manufacturing capacity or replace it at all. In the event of a temporary or protracted loss of the facilities or equipment, we might not be able to transfer manufacturing to a third party. Even if we could transfer manufacturing to a third party, the shift would likely be expensive and time-consuming, particularly since the new facility would need to comply with the necessary regulatory requirements and we would need regulatory agency approval before selling any drugs manufactured at that facility. Such an event could delay our clinical trials or reduce our product sales. Any interruption in manufacturing operations at our manufacturing facilities could result in our inability to satisfy the demands of our clinical trials or commercialization. Any disruption that impedes our ability to manufacture our drug candidates or drugs in a timely manner could materially harm our business, financial condition and operating results.

Currently, we maintain insurance coverage against damage to our property, plant and equipment in amounts we believe are reasonable. However, our insurance coverage may not reimburse us, or may not be sufficient to reimburse us, for any expenses or losses we may suffer. We may be unable to meet our requirements for our drug candidates and drugs if there were a catastrophic event or interruption or failure of our manufacturing facilities or processes.

Future operating results could be negatively affected by changes in tax rates, the adoption of new tax legislation in the jurisdictions in which we operate, or exposure to additional tax liabilities.

The nature of our international operations subjects us to local, state, regional and national tax laws in jurisdictions around the world. Our future tax expense could be affected by changes in the mix of earnings in countries with differing statutory tax rates, changes in the valuation of deferred tax assets and liabilities or changes in tax laws or their interpretation. Additionally, tax rules governing cross-border activities are continually subject to modification as a result of both coordinated actions by governments and unilateral measures designed by individual countries, both intended to tackle concerns over base erosion and profit shifting (BEPS) and perceived international tax avoidance techniques.

We have received tax rulings from various governments that have jurisdictional authority over our operations. If we are unable to meet the requirements of such agreements, or if they expire or are renewed on less favorable terms, the result could negatively impact our future earnings. Additionally, the European Commission has opened formal investigations into specific tax rulings granted by several countries to specific taxpayers. While we believe that our rulings are different than those being discussed, the ultimate resolution of such activities cannot be predicted and could also have an adverse impact on future operating results.

Risks Related to Our Doing Business in the PRC

The pharmaceutical industry in China is highly regulated, and such regulations are subject to change, which may affect approval and commercialization of our drugs.

A large portion of our business is conducted in China. The pharmaceutical industry in China is subject to comprehensive government regulation and supervision, encompassing the approval, registration, manufacturing, packaging, licensing and marketing of new drugs. In recent years, the regulatory framework in China regarding the pharmaceutical industry has undergone significant changes, which we expect will continue. While we believe our strategies regarding pharmaceutical research, development, manufacturing and commercialization in China are aligned with the Chinese government's policies, they may in the future diverge, requiring a change in our strategies. Any such change may result in increased compliance costs on our business or cause delays in or prevent the successful research, development, manufacturing or commercialization of our drug candidates or drugs in China and reduce the current benefits we believe are available to us from developing and manufacturing drugs in China.

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Chinese authorities have become increasingly vigilant in enforcing laws in the pharmaceutical industry. Any failure by us or our partners to maintain compliance with applicable laws and regulations or obtain and maintain required licenses and permits may result in the suspension or termination of our business activities in China. Reports of what have come to be viewed as significant quality-control failures by Chinese vaccine manufacturers have led to enforcement action against officials responsible for implementing national reforms favorable to innovative drugs (such as ours). While not directly affecting us, this macro-industry event could cause state or private resources to be diverted away from fostering innovation and be redirected toward regulatory enforcement, which could adversely affect our research, development, manufacturing and commercialization activities and increase our compliance cost.

Changes in the political and economic policies of the PRC government or in relations between China and the United States or other governments may materially and adversely affect our business, financial condition and results of operations and may result in our inability to sustain our growth and expansion strategies.

Due to our extensive operations in China, our business, results of operations, financial condition and prospects may be influenced to a significant degree by economic, political, legal and social conditions in the PRC or changes in government relations between China and the United States or other governments. China’s economy differs from the economies of developed countries in many respects, including with respect to the amount of government involvement, level of development, growth rate, control of foreign exchange and allocation of resources. While the PRC economy has experienced significant growth over the past four decades, growth has been uneven across different regions and among various economic sectors of the PRC. The PRC government has implemented various measures to encourage economic development and guide the allocation of resources. Some of these measures may benefit the overall PRC economy, but may have a negative effect on us. For example, our financial condition and results of operations may be adversely affected by government control over capital investments or changes in tax regulations that are currently applicable to us. In addition, in the past the PRC government implemented certain measures, including interest rate increases, to control the pace of economic growth. These measures may cause decreased economic activity in the PRC, which may adversely affect our business and results of operation. More generally, if the business environment in the PRC deteriorates from the perspective of domestic or international investment, or if relations between China and the United States or other governments deteriorate, our business in the PRC may also be adversely affected.

There are uncertainties regarding the interpretation and enforcement of PRC laws, rules and regulations.

A large portion of our operations are conducted in the PRC through our PRC subsidiaries, and are governed by PRC laws, rules and regulations. Our PRC subsidiaries are subject to laws, rules and regulations applicable to foreign investment in China. The PRC legal system is a civil law system based on written statutes. Unlike the common law system, prior court decisions may be cited for reference but have limited precedential value.

In 1979, the PRC government began to promulgate a comprehensive system of laws, rules and regulations governing economic matters in general. The overall effect of legislation over the past four decades has significantly enhanced the protections afforded to various forms of foreign investment in China. However, China has not developed a fully integrated legal system, and recently enacted laws, rules and regulations may not sufficiently cover all aspects of economic activities in China or may be subject to significant degrees of interpretation by PRC regulatory agencies. In particular, because these laws, rules and regulations are relatively new and often give the relevant regulator significant discretion in how to enforce them, and because of the limited number of published decisions and the nonbinding nature of such decisions, the interpretation and enforcement of these laws, rules and regulations involve uncertainties and can be inconsistent and unpredictable. In addition, the PRC legal system is based in part on government policies and internal rules, some of which are not published on a timely basis or at all, and which may have a retroactive effect. As a result, we may not be aware of our violation of these policies and rules until after the occurrence of the violation.

On March 15, 2019, the National People’s Congress published the Foreign Investment Law of the PRC, or the New Foreign Investment Law, which will come into force on January 1, 2020. The New Foreign Investment Law will replace the major existing laws and regulations governing foreign investment in China upon its enactment. The New Foreign Investment Law embodies an expected regulatory trend to rationalize China’s foreign investment regulatory regime in line with prevailing international practice and the legislative efforts to unify the corporate legal requirements for both foreign and domestic investments. However, there are still substantial uncertainties with respect to the interpretation and implementation rules of the New Foreign Investment Law. The New Foreign Investment Law requires foreign investors or applicable foreign invested entities, or FIEs, to report investment information to government authorities. Although the New Foreign Investment Law does not specify the form, content, scope and frequency of such information reporting, it provides monetary fines of up to RMB 500,000 on non-compliance of such information reporting obligations. The PRC governmental authorities may promulgate implementation rules after the Foreign Investment Law is enacted and further clarify the detailed information reporting requirements on foreign investors and the applicable FIEs. In addition, the New Foreign Investment Law provides that FIEs established according to the existing laws regulating foreign investment may maintain their structure and corporate governance

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within a five-year transition period. It is uncertain whether the PRC governmental authorities may require us to adjust the structure and corporate governance of certain of our PRC subsidiaries in such transition period. Failure to take timely and appropriate measures to meet any of these or similar regulatory compliance requirements could materially affect our current corporate governance practices and business operations and our compliance costs may increase significantly.

Additionally, the NMPA’s recent reform of the drug and approval system may face implementation challenges. The timing and full impact of such reforms is uncertain and could prevent us from commercializing our drug candidates in a timely manner.

In addition, any administrative and court proceedings in the PRC may be protracted, resulting in substantial costs and diversion of resources and management attention. Since PRC administrative and court authorities have significant discretion in interpreting and implementing statutory and contractual terms, it may be more difficult to evaluate the outcome of administrative and court proceedings and the level of legal protection we enjoy than in more developed legal systems. These uncertainties may impede our ability to enforce the contracts we have entered into and could materially and adversely affect our business, financial condition and results of operations.

Any failure to comply with PRC regulations regarding our employee equity plans and investments in offshore companies by PRC residents may subject the PRC plan participants and PRC-residents beneficial owners or us to fines and other legal or administrative sanctions.

We and our directors, executive officers and other employees who are PRC residents have participated in our employee equity plans. We are an overseas listed company, and therefore, we and our directors, executive officers and other employees who are PRC citizens or who have resided in the PRC for a continuous period of not less than one year and who have been granted restricted share units, restricted shares, options or other forms of equity incentives or rights to acquire equity are subject to the Notice on Issues Concerning the Foreign Exchange Administration for Domestic Individuals Participating in Share Incentive Plan of Overseas Publicly Listed Company, according to which, employees, directors, supervisors and other management members participating in any share incentive plan of an overseas publicly listed company who are PRC citizens or who are non-PRC citizens residing in the PRC for a continuous period of not less than one year, subject to limited exceptions, are required to register with the State Administration of Foreign Exchange, or the SAFE, through a domestic qualified agent, which could be a PRC subsidiary of such overseas listed company, and complete certain other procedures. We also face regulatory uncertainties that could restrict our ability to adopt additional equity incentive plans for our directors and employees under PRC law.

Some of our existing shareholders, each of whom owns our ordinary shares as a result of exercising share options, are PRC residents under the Circular on Relevant Issues Concerning Foreign Exchange Control on Domestic Residents’ Offshore Investment and Financing and Roundtrip Investment through Special Purpose Vehicles, or SAFE Circular 37. These shareholders have undertaken to (i) apply to register with local SAFE branch or its delegated commercial bank as soon as possible after exercising their options, and (ii) indemnify and hold harmless us and our subsidiaries against any loss suffered arising from their failure to complete the registration. We do not have control over such shareholders and our other beneficial owners and cannot assure you that all of our PRC-resident beneficial owners have complied with, and will in the future comply with, SAFE Circular 37 and subsequent implementation rules.

If we or our directors, executive officers or other employees who are PRC citizens or who have resided in the PRC for a continuous period of not less than one year and who have been granted equity awards or other rights to acquire equity fail to register the employee equity plans or their exercise of options or vesting of equity awards, or such PRC-resident beneficial owners fails to register or amend their SAFE registrations in a timely manner pursuant to SAFE Circular 37, we and such employees and PRC-beneficial owners may be subject to (i) legal or administrative sanctions imposed by the SAFE or other PRC authorities, including fines; (ii) restrictions on our cross-border investment activities; (iii) limits on the ability of our wholly owned subsidiaries in China to distribute dividends or the proceeds from any reduction in capital, share transfer or liquidation to us; and (iv) prohibitions on our ability to inject additional capital into these subsidiaries. Moreover, failure to comply with the various foreign exchange registration requirements described above could result in liability under PRC law for circumventing applicable foreign exchange restrictions.

We may rely on dividends and other distributions on equity paid by our PRC subsidiaries to fund any cash and financing requirements we may have, and any limitation on the ability of our PRC subsidiaries to make payments to us could have a material and adverse effect on our ability to conduct our business.

We are a holding company incorporated in the Cayman Islands, and we may rely on dividends and other distributions on equity paid by our PRC subsidiaries for our cash and financing requirements, including the funds necessary to pay dividends and other cash distributions to our shareholders or to service any debt we may incur. If any of our PRC subsidiaries incur debt on their own behalf in the future, the instruments governing the debt may restrict their ability to pay dividends or make other

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distributions to us. Under PRC laws and regulations, our PRC subsidiaries may pay dividends only out of their respective accumulated profits as determined in accordance with PRC accounting standards and regulations. In addition, a wholly foreign-owned enterprise is required to set aside at least 10% of its accumulated after-tax profits each year, if any, to fund a certain statutory reserve fund, until the aggregate amount of such fund reaches 50% of its registered capital. Such reserve funds cannot be distributed to us as dividends. At its discretion, a wholly foreign-owned enterprise may allocate a portion of its after-tax profits based on PRC accounting standards to an enterprise expansion fund, or a staff welfare and bonus fund. In addition, registered share capital and capital reserve accounts are also restricted from withdrawal in the PRC, up to the amount of net assets held in each operating subsidiary. As of March 31, 2019 and December 31, 2018, these restricted assets totaled $105.7 million and $93.3 million, respectively.

Our PRC subsidiaries generate primarily all of their revenue in RMB, which is not freely convertible into other currencies. As a result, any restriction on currency exchange may limit the ability of our PRC subsidiaries to use their RMB revenues to pay dividends to us.

In response to the persistent capital outflow in the PRC and RMB’s depreciation against the U.S. dollar in the fourth quarter of 2016, China’s People’s Bank of China, or PBOC, and the SAFE promulgated a series of capital control measures, including stricter vetting procedures for domestic companies to remit foreign currency for overseas investments, dividends payments and shareholder loan repayments.

The PRC government may continue to strengthen its capital controls, and more restrictions and substantial vetting process may be put forward by the SAFE for cross-border transactions falling under both the current account and the capital account. Any limitation on the ability of our PRC subsidiaries to pay dividends or make other kinds of payments to us could materially and adversely limit our ability to grow, make investments or acquisitions that could be beneficial to our business, pay dividends, or otherwise fund and conduct our business.

The Enterprise Income Tax Law, or the EIT Law, and its implementation rules provide that China-sourced income of foreign enterprises, such as dividends paid by a PRC subsidiary to its equity holders that are non-PRC resident enterprises, will normally be subject to PRC withholding tax at a rate of 10%, unless any such foreign investor’s jurisdiction of incorporation has a tax treaty with China that provides for a different withholding arrangement. As a result, dividends paid to us by our PRC subsidiaries are expected to be subject to PRC withholding tax at a rate of 10%.

Pursuant to the Arrangement between Mainland China and Hong Kong Special Administrative Region for the Avoidance of Double Taxation and Prevention of Fiscal Evasion with respect to Taxes on Income, or the Hong Kong Tax Treaty, BeiGene HK, the shareholder of some of our PRC subsidiaries, may be subject to a withholding tax at a rate of 5% on dividends received from our PRC operating subsidiaries as a Hong Kong tax resident. Pursuant to the Hong Kong Tax Treaty, subject to certain conditions, this reduced withholding tax rate will be available for dividends from PRC entities provided that the recipient can demonstrate it is a Hong Kong tax resident and it is the beneficial owner of the dividends. The SAT promulgated SAT Circular 9 in February 2018, which became effective from April 2018 and stipulates that in determining whether a non-resident enterprise has the status as a beneficial owner, comprehensive analysis shall be conducted based on the factors listed therein and the actual circumstances of the specific case shall be taken into consideration. Specifically, it expressly excludes an agent or a designated payee from being considered as a “beneficial owner.” BeiGene HK currently does not hold a Hong Kong tax resident certificate from the Inland Revenue Department of Hong Kong and there is no assurance that the reduced withholding tax rate will be available.

We may be treated as a resident enterprise for PRC tax purposes under the EIT Law and we may therefore be subject to PRC income tax on our worldwide taxable income. Dividends payable to foreign investors and gains on the sale of our ADSs or ordinary shares by our foreign investors may become subject to PRC tax.

Under the EIT Law an enterprise established outside the PRC with “de facto management bodies” within the PRC is considered a “resident enterprise,” meaning that it is treated in a manner similar to a Chinese enterprise for PRC enterprise income tax, or EIT, purposes. The implementing rules of the EIT Law define “de facto management bodies” as “management bodies that exercise substantial and overall management and control over the production and operations, personnel, accounting, and properties” of the enterprise. In addition, the Notice Regarding the Determination of Chinese-Controlled Offshore Incorporated Enterprises as PRC Tax Resident Enterprises on the Basis of De Facto Management Bodies, or Circular 82, specifies that certain Chinese-controlled offshore incorporated enterprises, defined as enterprises incorporated under the laws of foreign countries or territories and that have PRC enterprises or enterprise groups as their primary controlling shareholders, will be classified as resident enterprises if all of the following are located or resident in China: (i) senior management personnel and departments that are responsible for daily production, operation and management; (ii) financial and personnel decision-making bodies; (iii) key properties, accounting books, company seal, and minutes of board meetings and shareholders’ meetings; and

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(iv) half or more of senior management or directors having voting rights. The State Administration of Taxation, or the SAT, has subsequently provided further guidance on the implementation of Circular 82.

Although BeiGene, Ltd. does not have a PRC enterprise or enterprise group as its primary controlling shareholder and is therefore not a Chinese-controlled offshore incorporated enterprise within the meaning of Circular 82, in the absence of guidance specifically applicable to us, we have applied the guidance set forth in Circular 82 to evaluate the tax residence status of BeiGene, Ltd. and its subsidiaries organized outside of the PRC.

We are not aware of any offshore holding company with a corporate structure similar to ours that has been deemed a PRC “resident enterprise” by the PRC tax authorities. Accordingly, we do not believe that our company or any of our overseas subsidiaries should be treated as a PRC resident enterprise.

However, the tax resident status of an enterprise is subject to determination by the PRC tax authorities and uncertainties remain with respect to the interpretation of the term "de facto management body." If the PRC tax authorities determine that our Cayman Islands holding company is a resident enterprise for PRC enterprise income tax purposes, a number of unfavorable PRC tax consequences could follow and we may be subject to enterprise income tax at a rate of 25% on our worldwide taxable income, as well as to PRC enterprise income tax reporting obligations. If we are deemed a PRC resident enterprise, dividends paid on our ordinary shares or ADSs, and any gain realized from the transfer of our ordinary shares or ADSs, may be treated as income derived from sources within the PRC. As a result, dividends paid to non-PRC resident enterprise ADS holders or shareholders may be subject to PRC withholding tax at a rate of 10% (or 20% in the case of non-PRC individual ADS holders or shareholders) and gains realized by non-PRC resident enterprises ADS holders or shareholders from the transfer of our ordinary shares or ADSs may be subject to PRC tax at a rate of 10% (or 20% in the case of non-PRC individual ADS holders or shareholders).

We and our shareholders face uncertainties with respect to indirect transfers of equity interests in PRC resident enterprises or other assets attributed to a PRC establishment of a non-PRC company, or other assets attributable to a PRC establishment of a non-PRC company.

Pursuant to the Bulletin on Issues of Enterprise Income Tax and Indirect Transfers of Assets by Non-PRC Resident Enterprises, or Bulletin 7, which was amended by the Announcement on Issues Relating to Withholding at Source of Income Tax on Non-resident Enterprises issued by SAT, or Announcement 37, an “indirect transfer” of “PRC taxable assets,” including equity interests in a PRC resident enterprise, by non-PRC resident enterprises may be recharacterized and treated as a direct transfer of PRC taxable assets, if such arrangement does not have a reasonable commercial purpose and was established for the purpose of avoiding payment of PRC enterprise income tax. As a result, gains derived from such indirect transfer may be subject to PRC enterprise income tax. When determining whether there is a “reasonable commercial purpose” of the transaction arrangement, factors to be taken into consideration include: whether the main value of the equity interest of the relevant offshore enterprise derives from PRC taxable assets; whether the assets of the relevant offshore enterprise mainly consists of direct or indirect investment in the PRC or if its income mainly derives from the PRC; whether the offshore enterprise and its subsidiaries directly or indirectly holding PRC taxable assets have real commercial nature which is evidenced by their actual function and risk exposure; the duration of existence of the business model and organizational structure; the replicability of the transaction by direct transfer of PRC taxable assets; and the tax situation of such indirect transfer and applicable tax treaties or similar arrangements. In respect of an indirect offshore transfer of assets of a PRC establishment, the resulting gain is to be reported on with the enterprise income tax filing of the PRC establishment or place of business being transferred, and would consequently be subject to PRC enterprise income tax at a rate of 25%. Where the underlying transfer relates to equity investments in a PRC resident enterprise, which is not related to a PRC establishment or place of business of a non-resident enterprise, a PRC enterprise income tax at the rate of 10% would apply, subject to available preferential tax treatment under applicable tax treaties or similar arrangements. Late payment of applicable tax will subject the transferor to default interest. Gains derived from the sale of shares by investors through a public stock exchange are not subject to the PRC enterprise income tax pursuant to Bulletin 7 where such shares were acquired in a transaction through a public stock exchange. As such, the sale of the ADSs or ordinary shares on a public stock exchange will not be subject to PRC enterprise income tax pursuant to Bulletin 7. However, the sale of our ordinary shares or ADSs by a non-PRC resident enterprise outside a public stock exchange may be subject to PRC enterprise income tax under Bulletin 7.

There are uncertainties as to the application of Bulletin 7. Bulletin 7 may be determined by the tax authorities to be applicable to sale of the shares of our offshore subsidiaries or investments where PRC taxable assets are involved. The transferors and transferees may be subject to the tax filing and withholding or tax payment obligation, while our PRC subsidiaries may be requested to assist in the filing. Furthermore, we, our non-resident enterprises and PRC subsidiaries may be required to spend valuable resources to comply with Bulletin 7 or to establish that we and our non-resident enterprises should not be taxed under Bulletin 7, for our previous and future restructuring or disposal of shares of our offshore subsidiaries, which may have a material adverse effect on our financial condition and results of operations.

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The PRC tax authorities have the discretion under Bulletin 7 to make adjustments to the taxable capital gains based on the difference between the fair value of the taxable assets transferred and the cost of investment. If the PRC tax authorities make adjustments to the taxable income of the transactions under Announcement 37, or Bulletin 7, our income tax costs associated with such potential acquisitions or disposals will increase, which may have an adverse effect on our financial condition and results of operations.

Restrictions on currency exchange may limit our ability to utilize our revenue effectively.

The PRC government imposes controls on the convertibility of RMB into foreign currencies and, in certain cases, the remittance of currency out of the PRC. A portion of our revenue is denominated in RMB. Shortages in availability of foreign currency may then restrict the ability of our PRC subsidiaries to remit sufficient foreign currency to our offshore entities for our offshore entities to pay dividends or make other payments or otherwise to satisfy our foreign currency denominated obligations. The RMB is currently convertible under the “current account,” which includes dividends, trade and service-related foreign exchange transactions, but not under the “capital account,” which includes foreign direct investment and loans, including loans we may secure from our onshore subsidiaries. Currently, our PRC subsidiaries may purchase foreign currency for settlement of “current account transactions,” including payment of dividends to us, without the approval of SAFE by complying with certain procedural requirements. However, the relevant PRC governmental authorities may limit or eliminate our ability to purchase foreign currencies in the future for current account transactions. Since a portion of our revenue is denominated in RMB, any existing and future restrictions on currency exchange may limit our ability to utilize revenue generated in RMB to fund our business activities outside of the PRC or pay dividends in foreign currencies to holders of our ordinary shares and the ADSs. Foreign exchange transactions under the capital account remain subject to limitations and require approvals from, or registration with, SAFE and other relevant PRC governmental authorities or designated banks. This could affect our ability to obtain foreign currency through debt or equity financing for our subsidiaries.

Our business benefits from certain financial incentives and discretionary policies granted by local governments. Expiration of, or changes to, these incentives or policies would have an adverse effect on our results of operations.

Local governments in the PRC have granted certain financial incentives from time to time to our PRC subsidiaries as part of their efforts to encourage the development of local businesses. The timing, amount and criteria of government financial incentives are determined within the sole discretion of the local government authorities and cannot be predicted with certainty before we actually receive any financial incentive. We generally do not have the ability to influence local governments in making these decisions. Local governments may decide to reduce or eliminate incentives at any time. In addition, some of the government financial incentives are granted on a project basis and subject to the satisfaction of certain conditions, including compliance with the applicable financial incentive agreements and completion of the specific project therein. We cannot guarantee that we will satisfy all relevant conditions, and if we do so we may be deprived of the relevant incentives. We cannot assure you of the continued availability of the government incentives currently enjoyed by us. Any reduction or elimination of incentives would have an adverse effect on our results of operations. Government grant and subsidies recognized in the income statement for the three months ended March 31, 2019 and 2018, and the years ended December 31, 2018 and 2017 were $0.2 million, $0.2 million, $4.4 million and $11.3 million, respectively.

The audit report included in our Annual Report on Form 10-K filed with the SEC is prepared by auditors who are not inspected fully by the Public Company Accounting Oversight Board, or the PCAOB, and, as such, investors are deprived of the benefits of such inspection.

As an auditor of companies that are publicly traded in the United States and a firm registered with the PCAOB, Ernst & Young Hua Ming LLP is required under the laws of the United States to undergo regular inspections by the PCAOB. However, because we have substantial operations within the PRC, a jurisdiction where the PCAOB is currently unable to conduct inspections without the approval of the Chinese government authorities, our auditor and its audit work is not currently inspected fully by the PCAOB.

Inspections of other auditors conducted by the PCAOB outside the PRC have at times identified deficiencies in those auditors’ audit procedures and quality control procedures, which may be addressed as part of the inspection process to improve future audit quality. The lack of PCAOB inspections of audit work undertaken in the PRC prevents the PCAOB from regularly evaluating our auditor’s audits and its quality control procedures. As a result, investors may be deprived of the benefits of PCAOB inspections, and may lose confidence in our reported financial information and procedures and the quality of our financial statements.

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Proceedings instituted by the SEC against five PRC-based accounting firms, including our independent registered public accounting firm, could result in our financial statements being determined to not be in compliance with the requirements of the Exchange Act.

In December 2012, the SEC brought administrative proceedings against five accounting firms in China, including our independent registered public accounting firm, alleging that they had refused to produce audit work papers and other documents related to certain other PRC-based companies under investigation by the SEC. On January 22, 2014, an initial administrative law decision was issued, censuring these accounting firms and suspending four of these firms from practicing before the SEC for a period of six months. The decision is neither final nor legally effective unless and until reviewed and approved by the SEC. On February 12, 2014, four of these PRC-based accounting firms appealed to the SEC against this decision. In February 2015, each of the four PRC-based accounting firms agreed to a censure and to pay a fine to the SEC to settle the dispute and avoid suspension of their ability to practice before the SEC. These firms’ ability to continue to serve all their respective clients is not affected by the settlement. The settlement requires these firms to follow detailed procedures to seek to provide the SEC with access to Chinese firms’ audit documents via the China Securities Regulatory Commission, or the CSRC. If these firms do not follow these procedures, the SEC could impose penalties such as suspensions, or it could restart the administrative proceedings. The settlement did not require these firms to admit to any violation of law and preserves these firms’ legal defenses in the event the administrative proceeding is restarted. In the event that the SEC restarts the administrative proceedings, depending upon the final outcome, listed companies in the United States with major PRC operations may find it difficult or impossible to retain auditors in respect of their operations in the PRC, which could result in financial statements being determined to not be in compliance with the requirements of the Exchange Act, including possible delisting. Moreover, any negative news about the proceedings against these audit firms may cause investor uncertainty regarding PRC-based, U.S.-listed companies and the market price of the ADSs and/or ordinary shares may be adversely affected.

If our independent registered public accounting firm was denied, even temporarily, the ability to practice before the SEC and we were unable to timely find another registered public accounting firm to audit and issue an opinion on our financial statements, our financial statements could be determined not to be in compliance with the requirements of the Exchange Act. Such a determination could ultimately lead to deregistration from the SEC, which would substantially reduce or effectively terminate the trading of the ADSs in the United States. Moreover, any negative news about the proceedings against these audit firms may adversely affect investor confidence in companies with substantial mainland China-based operations listed in the United States. All these would materially and adversely affect the market price of the ADSs and substantially reduce or effectively terminate the trading of the ADSs in the United States, and the market price of the ordinary shares may be adversely affected.

Risks Related to Our American Depositary Shares and Ordinary Shares

The trading prices of our ordinary shares and/or ADSs can be volatile, which could result in substantial losses to you.

The trading price of our ordinary shares and/or ADSs can be volatile and fluctuate widely in response to a variety of factors, many of which are beyond our control. In addition, the performance and fluctuation of the market prices of other companies with business operations located mainly in the PRC that have listed their securities in Hong Kong or the United States may affect the volatility in the price of and trading volumes for our ordinary shares and/or ADSs. Some of these companies have experienced significant volatility. The trading performances of these PRC companies’ securities may affect the overall investor sentiment towards other PRC companies listed in Hong Kong or the United States and consequently may impact the trading performance of our ordinary shares and/or ADSs.

In addition to market and industry factors, the price and trading volume for our ordinary shares and/or ADSs may be highly volatile for specific business reasons, including: announcements of regulatory approval or a complete response letter, or specific label indications or patient populations for its use, or changes or delays in the regulatory review process; announcements of therapeutic innovations, new products, acquisitions, strategic relationships, joint ventures or capital commitments by us or our competitors; adverse actions taken by regulatory agencies with respect to our clinical trials, manufacturing supply chain or sales and marketing activities; any adverse changes to our relationship with manufacturers or suppliers; the results of our testing and clinical trials; the results of our efforts to acquire or license additional drug candidates; variations in the level of expenses related to our existing drugs and drug candidates or preclinical, clinical development and commercialization programs; any intellectual property infringement actions in which we may become involved; announcements concerning our competitors or the pharmaceutical industry in general; fluctuations in product revenue, sales and marketing expenses and profitability; manufacture, supply or distribution shortages; variations in our results of operations; announcements about our results of operations that are not in line with analyst expectations, the risk of which is enhanced because it is our policy not to give guidance on results of operations; publication of operating or industry metrics by third parties, including government statistical agencies, that differ from expectations of industry or financial analysts; changes in financial estimates by securities research analysts; media reports, whether or not true, about our business, our competitors or

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our industry; additions to or departures of our management; fluctuations of exchange rates between the RMB, the U.S. dollar and Hong Kong dollar; release or expiry of lock-up or other transfer restrictions on our outstanding ordinary shares or ADSs; sales or perceived potential sales of additional ordinary shares or ADSs by us, our executive officers and directors or our shareholders; general economic and market conditions and overall fluctuations in the U.S. or Hong Kong equity markets; changes in accounting principles; trade disputes or U.S.-China government relations; and changes or developments in the U.S., PRC, EU or global regulatory environment.

In addition, the stock market, in general, and pharmaceutical and biotechnology companies, in particular, have experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of these companies. Broad market and industry factors may negatively affect the market price of our ordinary shares and/or ADSs, regardless of our actual operating performance. Further, the current volatility in the financial markets and related factors beyond our control may cause the ordinary share and/or ADS price to decline rapidly and unexpectedly.

The characteristics of the U.S. capital markets and the Hong Kong capital markets are different.

The Nasdaq and HKEx have different trading hours, trading characteristics (including trading volume and liquidity), trading and listing rules, and investor bases (including different levels of retail and institutional participation). As a result of these differences, the trading prices of our ordinary shares and the ADSs representing them might not be the same, even allowing for currency differences. Fluctuations in the price of our ADSs due to circumstances peculiar to its home capital market could materially and adversely affect the price of the ordinary shares, and vice versa. Because of the different characteristics of the U.S. and Hong Kong equity markets, the historic market prices of our ADSs and ordinary shares may not be indicative of the performance of our securities going forward.

We may be subject to securities litigation, which is expensive and could divert management attention.

Companies that have experienced volatility in the volume and market price of their shares have been subject to an increased incidence of securities class action litigation, particularly in our industry in recent years. We may be the target of this type of litigation in the future. Securities litigation against us could result in substantial costs and divert our management’s attention from other business concerns, and, if adversely determined, could have a material adverse effect on our business, financial condition and results of operations.

Future sales of our ordinary shares and/or ADSs in the public market could cause the ordinary shares and/or ADS price to fall.

The price of our ordinary shares and/or ADSs could decline as a result of sales of a large number of the ordinary shares and/or ADSs or the perception that these sales could occur. These sales, or the possibility that these sales may occur, also might make it more difficult for us to sell equity securities in the future at a time and at a price that we deem appropriate.

As of April 30, 2019, 777,672,755 ordinary shares, par value $0.0001 per share, were outstanding, of which 606,358,597 ordinary shares were held in the form of 46,642,969 ADSs, each representing 13 ordinary shares.

We filed a registration statement with the SEC on behalf of certain shareholders on May 26, 2017, registering 299,279,370 ordinary shares in the form of 23,021,490 ADSs to be resold by the selling shareholders identified therein and in any related prospectus supplement from time to time. Furthermore, we have registered or plan to register the offer and sale of all securities that we have issued and may issue in the future under our equity compensation plans, including upon the exercise of share options and vesting of restricted share units and under our employee share purchase plan. If these additional securities are sold, or if it is perceived that they will be sold, in the public market, the trading price of our ordinary shares and/or ADSs could decline. We have also granted certain registration rights with respect to the shares issued to Celgene in the event that they are not eligible for sale under Rule 144.

In addition, in the future, we may issue additional ordinary shares, ADSs or other equity or debt securities convertible into ordinary shares or ADSs in connection with a financing, acquisition, license, litigation settlement, employee arrangements or otherwise. Any such issuance could result in substantial dilution to our existing shareholders and could cause the ordinary share and/or ADS price to decline.

Because we do not expect to pay dividends in the foreseeable future, you must rely on price appreciation of the ordinary shares and/or ADSs for return on your investment.

We intend to retain most, if not all, of our available funds and earnings to fund the development and growth of our business. As a result, we do not expect to pay any cash dividends in the foreseeable future. Therefore, you should not rely on an investment in the ordinary shares and/or ADSs as a source for any future dividend income.

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Our board of directors has significant discretion as to whether to distribute dividends. Even if our board of directors decides to declare and pay dividends, the timing, amount and form of future dividends, if any, will depend on, among other things, our future results of operations and cash flow, our capital requirements and surplus, the amount of distributions, if any, received by us from our subsidiaries, our financial condition, contractual and regulatory restrictions and other factors deemed relevant by our board of directors. Accordingly, the return on your investment in the ordinary shares and/or ADSs will likely depend entirely upon any future price appreciation of the ordinary shares and/or ADSs. There is no guarantee that the ordinary shares and/or ADSs will appreciate in value or even maintain the price at which you purchased the ordinary shares and/or ADSs. You may not realize a return on your investment in the ordinary shares and/or ADSs and you may even lose your entire investment in the ordinary shares and/or ADSs.

If securities or industry analysts do not continue to publish research or publish inaccurate or unfavorable research about our business, the market price for the ordinary shares and/or ADSs and trading volume could decline.

The trading market for the ordinary shares and ADSs relies in part on the research and reports that equity research analysts publish about us or our business. We do not control these analysts. If research analysts do not maintain adequate research coverage or if one or more of the analysts who covers us downgrades the ordinary shares and/or ADSs or publishes inaccurate or unfavorable research about our business, the market price for the ordinary shares and/or ADSs would likely decline. If one or more of these analysts cease coverage of our company or fail to publish reports on us regularly, we could lose visibility in the financial markets, which, in turn, could cause the market price or trading volume for the ordinary shares and/or ADSs to decline significantly.

We are a Cayman Islands company. Because judicial precedent regarding the rights of shareholders is more limited under Cayman Islands law than under Hong Kong law or U.S. law, shareholders may have fewer shareholder rights than they would have under Hong Kong law or U.S. law and may face difficulties in protecting your interests.

We are an exempted company with limited liability incorporated in the Cayman Islands. Our corporate affairs are governed by our amended and restated memorandum and articles of association (as may be further amended from time to time), the Companies Law (as amended) of the Cayman Islands and the common law of the Cayman Islands. The rights of shareholders to take action against the directors, actions by minority shareholders and the fiduciary responsibilities of our directors are to a large extent governed by the common law of the Cayman Islands. This common law is derived in part from comparatively limited judicial precedent in the Cayman Islands as well as from English common law, which has persuasive, but not binding, authority on a court in the Cayman Islands. The rights of our shareholders and the fiduciary responsibilities of our directors under Cayman Islands law are not as clearly established as they would be under statutes or judicial precedent in some jurisdictions in Hong Kong and the United States. In particular, the Cayman Islands has a less developed body of securities law than Hong Kong or the United States. In addition, some states in the United States, such as Delaware, have more fully developed and judicially interpreted bodies of corporate law than the Cayman Islands.

In addition, as a Cayman Islands exempted company, our shareholders have no general rights under Cayman Islands law to inspect corporate records and accounts or to obtain copies of lists of shareholders of these companies with the exception that the shareholders may request a copy of the current amended and restated memorandum and articles of association. Our directors have discretion under our amended and restated articles of association to determine whether or not, and under what conditions, our corporate records may be inspected by our shareholders, but are not obliged to make them available to our shareholders. This may make it more difficult for you to obtain the information needed to establish any facts necessary for a shareholder motion or to solicit proxies from other shareholders in connection with a proxy contest. As a Cayman Islands company, we may not have standing to initiate a derivative action in a Hong Kong or U.S. federal court. As a result, you may be limited in your ability to protect your interests if you are harmed in a manner that would otherwise enable you to sue in a United States federal court. In addition, shareholders of Cayman Islands companies may not have standing to initiate a shareholder derivative action in Hong Kong or U.S. federal courts.

Some of our directors and executive officers reside outside of Hong Kong and the United States and a substantial portion of their assets are located outside of Hong Kong and the United States. As a result, it may be difficult or impossible for you to bring an action against us or against these individuals in Hong Kong or in the United States in the event that you believe that your rights have been infringed under the securities laws of Hong Kong, the United States or otherwise. To the extent our directors and executive officers reside outside China or their assets are located outside China, it may not be possible for investors to effect service of process upon us or our management inside China. Even if you are successful in bringing an action, the laws of the Cayman Islands and China may render you unable to enforce a judgment against our assets or the assets of our directors and officers. There is no statutory recognition in the Cayman Islands of judgments obtained in the United States, Hong Kong or China, although the courts of the Cayman Islands will generally recognize and enforce a non-penal judgment of a foreign court of competent jurisdiction without retrial on the merits.

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As a result of all of the above, public shareholders may have more difficulty in protecting their interests in the face of actions taken by management, members of the board of directors or controlling shareholders than they would as public shareholders of a Hong Kong company or a U.S. company.

Your voting rights as a holder of the ADSs are limited by the terms of the deposit agreement. The depositary for the ADSs will give us a discretionary proxy to vote our ordinary shares underlying your ADSs if you do not vote at shareholders’ meetings, except in limited circumstances, which could adversely affect your interests.

You may exercise your voting rights with respect to the ordinary shares underlying your ADSs only in accordance with the provisions of the deposit agreement. Upon receipt of voting instructions from you in the manner set forth in the deposit agreement, the depositary for the ADSs will endeavor to vote your underlying ordinary shares in accordance with these instructions. Under our articles of association, the minimum notice period required for convening an annual general meeting is twenty-one calendar days and the minimum notice period required for convening an extraordinary general meeting is fourteen calendar days. When a general meeting is convened, you may not receive sufficient notice of a shareholders’ meeting to permit you to withdraw your ordinary shares to allow you to cast your vote with respect to any specific matter at the meeting. In addition, the depositary and its agents may not be able to send voting instructions to you or carry out your voting instructions in a timely manner. We will make all reasonable efforts to cause the depositary to extend voting rights to you in a timely manner, but you may not receive the voting materials in time to ensure that you can instruct the depositary to vote your shares. Furthermore, the depositary and its agents will not be responsible for any failure to carry out any instructions to vote, for the manner in which any vote is cast or for the effect of any such vote. As a result, you may not be able to exercise your right to vote and you may lack recourse if your ordinary shares are not voted as you requested.

Under the deposit agreement, for the ADSs, the depositary will give us a discretionary proxy to vote the ordinary shares underlying your ADSs at shareholders’ meetings if you do not give voting instructions to the depositary, unless:

• we have failed to timely provide the depositary with our notice of meeting and related voting materials;

• we have instructed the depositary that we do not wish a discretionary proxy to be given;

• we have informed the depositary that there is substantial opposition as to a matter to be voted on at the meeting; or

• a matter to be voted on at the meeting would have a material adverse impact on shareholders.

The effect of this discretionary proxy is that, if you fail to give voting instructions to the depositary, you cannot prevent the ordinary shares underlying your ADSs from being voted, absent the situations described above, and it may make it more difficult for you to influence our management. Holders of our ordinary shares are not subject to this discretionary proxy.

Anti-takeover provisions in our constitutional documents may discourage our acquisition by a third party, which could limit our shareholders’ opportunity to sell their shares at a premium.

Our amended and restated memorandum and articles of association include provisions that could limit the ability of others to acquire control of our company, could modify our structure or could cause us to engage in change-of-control transactions. These provisions could have the effect of depriving our shareholders of an opportunity to sell their shares, at a premium over prevailing market prices by discouraging third parties from seeking to obtain control in a tender offer or similar transaction.

For example, our board of directors has the authority, without further action by our shareholders, to issue preferred shares in one or more series and to fix the powers and rights of these shares, including dividend rights, conversion rights, voting rights, terms of redemption and liquidation preferences, any or all of which may be greater than the rights associated with our ordinary shares. Preferred shares could thus be issued quickly with terms calculated to delay or prevent a change in control or make removal of management more difficult. In addition, if our board of directors authorizes the issuance of preferred shares, the market price of the ordinary shares and/or ADSs may fall and the voting and other rights of the holders of our ordinary shares and/or ADSs may be materially and adversely affected.

Furthermore, the amended and restated articles of association permit the directors to vary all or any of the rights attaching to any class of shares in issue without the consent of the shareholder but only if such variation is considered by the directors not to have a material adverse effect upon such holder. The directors cannot vary the rights of shares if such variation would have a material adverse effect of the holder. The amended and restated articles of association provide that the holders must consent to any such material adverse changes in the manner set out therein.

Because our directors are divided into three classes with staggered terms of three years each, shareholders can only elect or remove a limited number of our directors in any given year. The length of these terms could present an obstacle to certain actions, such as a merger or other change of control, which could be in the interest of our shareholders.

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Our amended and restated memorandum and articles of association designate courts in the Cayman Islands as the sole and exclusive forum for certain types of actions and proceedings that may be initiated by our shareholders, which could limit our shareholders' ability to obtain a favorable judicial forum for disputes with us or our directors, officers or other employees.

Our amended and restated memorandum and articles of association provide that, unless we consent in writing to the selection of an alternative forum, the courts of Cayman Islands will be the sole and exclusive forum for any derivative action or proceeding brought on behalf of us, any action asserting a claim of breach of a fiduciary duty owed by any director, officer or other employee of us to us or our shareholders, any action asserting a claim arising pursuant to any provision of the Companies Law of the Cayman Islands as amended from time to time, or the amended and restated memorandum and articles of association, or any action asserting a claim governed by the internal affairs doctrine (as such concept is recognized under the U.S. laws). This provision may limit a shareholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers or other employees, which may discourage such lawsuits. Alternatively, if a court were to find this provision of our amended and restated memorandum and articles of association inapplicable to, or unenforceable in respect of, one or more of the specified types of actions or proceedings, we may incur additional costs associated with resolving such matters in other jurisdictions.

Our amended and restated memorandum and articles of association provide that any shareholder bringing an unsuccessful action against us may be obligated to reimburse us for any costs we have incurred in connection with such unsuccessful action.

Our amended and restated memorandum and articles of association provide that under certain circumstances the fees, costs, and expenses that we incur in connection with actions or proceedings brought by any person or entity, which we refer to as claiming parties, may be shifted to such person or entity. If a claiming party asserts any claim; initiates any proceeding; or joins, offers substantial assistance to, or has a direct financial interest in any claim or proceeding against us, and such claiming party or the third party that received substantial assistance from the claiming party or in whole claim the claiming party had a direct financial interest is unsuccessful in obtaining a judgment on the merits in which the claiming party prevails, then such claiming party shall (to the fullest extent permitted by law) be obligated to reimburse us for all fees, costs, and expenses, including but not limited to all reasonable attorneys’ fees and other litigation expenses, that we may incur in connection with such claim or proceeding.

Fee-shifting articles are relatively new and untested in the Cayman Islands, the United States and Hong Kong. The case law and potential legislative action on fee-shifting articles are evolving and there exists considerable uncertainty regarding the validity of, and potential judicial and legislative responses to, such articles. The application of our fee-shifting article in connection with claims under the Cayman Islands, the United States or Hong Kong securities laws, if any, will depend in part on future developments of the law. We cannot assure you that we will or will not invoke our fee-shifting article in any particular dispute. Consistent with our directors’ fiduciary duties to act in the best interests of the Company, the directors may in their sole discretion from time to time decide whether or not to enforce this article. In addition, given the unsettled state of the law related to fee-shifting articles, such as ours, we may incur significant additional costs associated with resolving disputes with respect to such articles, which could adversely affect our business and financial condition.

If a shareholder that brings any such claim or proceeding is unable to obtain the judgment sought, the attorneys’ fees and other litigation expenses that might be shifted to a claiming party are potentially significant. This fee-shifting article, therefore, may dissuade or discourage current or former shareholders (and their attorneys) from initiating lawsuits or claims against us. In addition, it may impact the fees, contingency or otherwise, required by potential plaintiffs’ attorneys to represent our shareholders or otherwise discourage plaintiffs’ attorneys from representing our shareholders at all. As a result, this article may limit the ability of shareholders to affect the management and direction of our company, particularly through litigation or the threat of litigation.

Holders of the ADSs may be subject to limitations on transfer of their ADSs.

Your ADSs are transferable on the books of the depositary. However, the depositary may close its books at any time or from time to time when it deems expedient in connection with the performance of its duties. The depositary may refuse to deliver, transfer or register transfers of your ADSs generally when our books or the books of the depositary are closed, or at any time if we or the depositary think it is advisable to do so because of any requirement of law, government or governmental body, or under any provision of the deposit agreement, as amended, or for any other reason, subject to your right to cancel your ADSs and withdraw the underlying ordinary shares. Temporary delays in the cancellation of your ADSs and withdrawal of the underlying common shares may arise because the depositary has closed its transfer books or we have closed our transfer books, the transfer of ordinary shares is blocked to permit voting at a shareholders’ meeting or we are paying a dividend on our ordinary shares.

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In addition, you may not be able to cancel your ADSs and withdraw the underlying ordinary shares when you owe money for fees, taxes and similar charges and when it is necessary to prohibit withdrawals in order to comply with any laws or governmental regulations that apply to ADSs or to the withdrawal of ordinary shares or other deposited securities.

The depositary for the ADSs is entitled to charge holders fees for various services, including annual service fees. Dealings in the ordinary shares registered in our Hong Kong register of members will be subject to Hong Kong stamp duty.

The depositary for the ADSs is entitled to charge holders fees for various services including for the issuance of ADSs upon deposit of ordinary shares, cancellation of ADSs, distributions of cash dividends or other cash distributions, distributions of ADSs pursuant to share dividends or other free share distributions, distributions of securities other than ADSs and annual service fees. In the case of ADSs issued by the depositary into The Depository Trust Company, or DTC, the fees will be charged by the DTC participant to the account of the applicable beneficial owner in accordance with the procedures and practices of the DTC participant as in effect at the time. Additionally, dealings in the ordinary shares registered in our Hong Kong register of members will be subject to Hong Kong stamp duty.

Holders of the ADSs may not receive distributions on our ordinary shares or any value for them if it is illegal or impractical to make them available to you.

The depositary of the ADSs has agreed to pay you the cash dividends or other distributions it or the custodian for the ADSs receives on our ordinary shares or other deposited securities after deducting its fees and expenses. You will receive these distributions in proportion to the number of our ordinary shares that your ADSs represent. However, the depositary is not responsible for making such payments or distributions if it is unlawful or impractical to make a distribution available to any holders of ADSs. For example, it would be unlawful to make a distribution to a holder of ADSs if it consists of securities that require registration under the Securities Act of 1933, as amended, or the Securities Act, but that are not properly registered or distributed pursuant to an applicable exemption from registration. The depositary is not responsible for making a distribution available to any holders of ADSs if any government approval or registration required for such distribution cannot be obtained after reasonable efforts made by the depositary. We have no obligation to take any other action to permit the distribution of the ADSs, ordinary shares, rights or anything else to holders of the ADSs. This means that you may not receive the distributions we make on our ordinary shares or any value for them if it is illegal or impractical for us to make them available to you. These restrictions may materially reduce the value of your ADSs.

Holders of the ADSs may not be able to participate in rights offerings and may experience dilution of their holdings.

From time to time, we may distribute rights to our shareholders, including rights to acquire securities. Under the deposit agreement, the depositary will not distribute rights to holders of ADSs unless the distribution and sale of rights and the securities to which these rights relate are either exempt from registration under the Securities Act with respect to all holders of ADSs or are registered under the Securities Act. The depositary may, but is not required to, attempt to sell these undistributed rights to third parties and may allow the rights to lapse. We may be unable to establish an exemption from registration under the Securities Act, and we are under no obligation to file a registration statement with respect to these rights or underlying securities or to try to have a registration statement declared effective. Accordingly, holders of ADSs may be unable to participate in our rights offerings and may experience dilution of their holdings as a result.

Our corporate actions are substantially controlled by our directors, executive officers and other principal shareholders, who can exert significant influence over important corporate matters, which may reduce the price of the ordinary shares and/or ADSs and deprive you of an opportunity to receive a premium for your ordinary shares and/or ADSs.

Our directors, executive officers and principal shareholders beneficially owned approximately 58.5% of our outstanding ordinary shares as of April 30, 2019. These shareholders, if acting together, could exert substantial influence over matters such as electing directors and approving material mergers, acquisitions or other business combination transactions. This concentration of ownership may also discourage, delay or prevent a change in control of our company, which could have the dual effect of depriving our shareholders of an opportunity to receive a premium for their shares as part of a sale of our company and reducing the price of our ordinary shares and/or ADSs. These actions may be taken even if they are opposed by our other shareholders. In addition, these persons could divert business opportunities away from us to themselves or others.

We may be a passive foreign investment company in future taxable years, which may have adverse U.S. federal income tax consequences for U.S. shareholders.

A non-U.S. corporation will be classified as a “passive foreign investment company,” (or a “PFIC”) for any taxable year if either (1) 75% or more of its gross income consists of certain types of passive income or (2) 50% or more of the average quarterly value of its assets during such year produce or are held for the production of passive income. Based upon the current and expected composition of our income and assets, we do not presently expect to be a PFIC for the current taxable year.

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Nevertheless, because our PFIC status must be determined annually with respect to each taxable year and will depend on the composition and character of our assets and income, and the value of our assets (which may be determined, in part, by reference to the market value of our ADSs and ordinary shares, which may be volatile) over the course of such taxable year, we may be a PFIC in any taxable year. If we determine not to deploy significant amounts of cash for active purposes, our risk of being a PFIC may substantially increase. Because there are uncertainties in the application of the relevant rules and PFIC status is a factual determination made annually after the close of each taxable year, there can be no assurance that we will not be a PFIC for the current taxable year or any future taxable year.  In addition, it is possible that the Internal Revenue Service may challenge our classification of certain income and assets as non-passive, which may result in our being or becoming a PFIC in the current or subsequent years. Further, U.S. investors should be aware that we determined we were a PFIC for 2016.

If we are a PFIC for any taxable year during a U.S. shareholder’s holding period of the ordinary shares or ADSs, then such U.S. shareholder may incur significantly increased United States income tax on gain recognized on the sale or other disposition of the ordinary shares or ADSs and on the receipt of distributions on the ordinary shares or ADSs to the extent such distribution is treated as an “excess distribution” under the United States federal income tax rules. In addition, such holders may be subject to burdensome reporting requirements.

Further, if we are classified as a PFIC for any year during which a U.S. shareholder holds our ordinary shares or ADSs, we will generally continue to be treated as a PFIC for all succeeding years during which such U.S. shareholder holds such ordinary shares or ADSs. Each U.S. shareholder should consult its tax advisor regarding the PFIC rules and the U.S. federal income tax consequences of the acquisition, ownership and disposition of the ordinary shares and ADSs.

If you are a “Ten Percent Shareholder,” you may be subject to adverse U.S. federal income tax consequences if we are classified as a Controlled Foreign Corporation.

Each “Ten Percent Shareholder” (as defined below) in a non-U.S. corporation that is classified as a “controlled foreign corporation,” or a CFC, for U.S. federal income tax purposes is generally required to include in income for U.S. federal tax purposes such Ten Percent Shareholder’s pro rata share of the CFC’s “Subpart F income” and investment of earnings in U.S. property, even if the CFC has made no distributions to its shareholders. Each Ten Percent Shareholder is also required to include in gross income its “global intangible low-taxed income,” which is determined by reference to the income of CFCs of which such Ten Percent Shareholder is a Ten Percent Shareholder. Ten Percent Shareholders that are corporations may be entitled to a deduction equal to the foreign portion of any dividend when a dividend is paid. A non-U.S. corporation will generally be classified as a CFC for U.S federal income tax purposes if Ten Percent Shareholders own in the aggregate, directly or indirectly, more than 50% of either the total combined voting power of all classes of stock of such corporation entitled to vote or of the total value of the stock of such corporation. A “Ten Percent Shareholder” is a U.S. person (as defined by the Internal Revenue Code of 1986, as amended), who owns or is considered to own 10% or more of the total combined voting power of all classes of stock entitled to vote of such corporation or 10% of the value of all classes of stock of such corporation. The determination of CFC status is complex and includes attribution rules, the application of which is not entirely certain. Although we believe we are not a CFC now, we may become one or own interests in one in the future. Holders are urged to consult their own tax advisors with respect to our potential CFC status and the consequences thereof.

Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds.

None.

Item 3.  Defaults Upon Senior Securities.

None.

Item 4.  Mine Safety Disclosures.

Not applicable.

Item 5.  Other Information.

Not applicable.

Item 6.  Exhibits.

See the Exhibit Index below for a list of the exhibits filed as part of, or incorporated by reference into, this Quarterly Report, which Exhibit Index is incorporated herein by reference.

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EXHIBIT INDEX

Exhibit No.	Exhibit Description	Filed/Furnished Herewith	Incorporated by Reference Herein from Form or Schedule	Filing Date	SEC File/ Reg. Number
31.1	Certification of Principal Executive Officer Required Under Rule 13a‑14(a) and 15d‑14(a) of the Securities Exchange Act of 1934, as amended	X
31.2	Certification of Principal Financial Officer Required Under Rule 13a‑14(a) and 15d‑14(a) of the Securities Exchange Act of 1934, as amended	X
32.1*	Certification of Principal Executive Officer and Principal Financial Officer Required Under Rule 13a‑14(b) of the Securities Exchange Act of 1934, as amended, and 18 U.S.C. §1350	X
101	The following materials from the Registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019, formatted in eXtensible Business Reporting Language (XBRL): (i) Condensed Consolidated Balance Sheets; (ii) Condensed Consolidated Statements of Operations; (iii) Condensed Consolidated Statements of Comprehensive Loss; (iv) Condensed Consolidated Statements of Cash Flows; and (v) Notes to the Condensed Consolidated Financial Statements	X

*Furnished herewith.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	BEIGENE, LTD.
Date: May 9, 2019	By:	/s/ John V. Oyler
	John V. Oyler
	Chief Executive Officer and Chairman
	(Principal Executive Officer)
Date: May 9, 2019	By:	/s/ Howard Liang
	Howard Liang
	Chief Financial Officer and Chief Strategy Officer
	(Principal Financial and Accounting Officer)

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EX-31.1

Exhibit 31.1

CERTIFICATIONS UNDER SECTION 302

I, John V. Oyler, certify that:

1. I have reviewed this quarterly report on Form 10-Q of BeiGene, Ltd.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 9, 2019

/s/ JOHN V. OYLER

John V. Oyler

Chief Executive Officer and Chairman

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATIONS UNDER SECTION 302

I, Howard Liang, certify that:

1. I have reviewed this quarterly report on Form 10-Q of BeiGene, Ltd.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 9, 2019

/s/ HOWARD LIANG

Howard Liang

Chief Financial Officer and Chief Strategy Officer

(Principal Financial and Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATIONS UNDER SECTION 906

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of BeiGene, Ltd., an exempted company incorporated in the Cayman Islands with limited liability (the "Company"), does hereby certify, to such officer's knowledge, that:

The Quarterly Report on Form 10-Q for the three months ended March 31, 2019 (the "Form 10-Q") of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: May 9, 2019	/s/ JOHN V. OYLER
	John V. Oyler
	Chief Executive Officer and Chairman
	(Principal Executive Officer)
Dated: May 9, 2019	/s/ HOWARD LIANG
	Howard Liang
	Chief Financial Officer and Chief Strategy Officer
	(Principal Financial and Accounting Officer)

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Document and Entity Information - $ / shares	3 Months Ended
	Mar. 31, 2019	Apr. 30, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	BEIGENE, LTD.
Entity Central Index Key	0001651308
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		777,672,755
Entity Listing, Par Value Per Share	$ 0.0001
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Emerging Growth Company	false
Entity Small Business	false

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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 764,492	$ 712,937
Short-term restricted cash	14,900	14,544
Short-term investments	849,167	1,068,509
Accounts receivable	58,976	41,056
Unbilled receivable	6,114	8,612
Inventories	13,140	16,242
Prepaid expenses and other current assets	89,941	81,942
Total current assets	1,796,730	1,943,842
Long-term restricted cash	8,991	13,232
Property, plant and equipment, net	197,806	157,061
Land use right, net		45,058
Operating lease right-of-use assets	72,624
Intangible assets, net	6,841	7,172
Goodwill	109	109
Deferred tax assets	30,526	29,542
Other non-current assets	58,605	53,668
Total non-current assets	375,502	305,842
Total assets	2,172,232	2,249,684
Current liabilities:
Accounts payable	105,320	113,283
Accrued expenses and other payables	90,737	100,414
Deferred revenue, current portion	17,504	18,140
Tax payable	6,857	5,888
Current portion of operating lease liabilities	9,451
Current portion of long-term bank loan	8,940	8,727
Total current liabilities	238,809	246,452
Non-current liabilities:
Long-term bank loan	77,480	40,785
Shareholder loan	155,174	148,888
Deferred revenue, non-current portion	8,240	9,842
Operating lease liabilities	19,545
Deferred tax liabilities	11,333	11,139
Other long-term liabilities	38,972	38,931
Total non-current liabilities	310,744	249,585
Total liabilities	549,553	496,037
Commitments and contingencies
Equity:
Ordinary shares, US$0.0001 par value per share; 9,500,000,000 shares authorized; 777,413,184 and 776,263,184 shares issued and outstanding as of March 31, 2019 and December 31, 2018, respectively	78	77
Additional paid-in capital	2,777,474	2,744,814
Accumulated other comprehensive income	6,072	1,526
Accumulated deficit	(1,174,855)	(1,007,215)
Total BeiGene, Ltd. shareholders’ equity	1,608,769	1,739,202
Noncontrolling interest	13,910	14,445
Total equity	1,622,679	1,753,647
Total liabilities and equity	$ 2,172,232	$ 2,249,684

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Ordinary shares
Ordinary shares, par value (in dollars per share)	$ 0.0001	$ 0.0001
Ordinary shares, shares authorized	9,500,000,000	9,500,000,000
Ordinary shares, shares issued	777,413,184	776,263,184
Ordinary shares, shares outstanding	777,413,184	776,263,184

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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues
Revenues	$ 77,833	$ 32,544
Expenses
Cost of sales - product	(15,261)	(4,550)
Research and development	(178,351)	(109,700)
Selling, general and administrative	(57,645)	(28,915)
Amortization of intangible assets	(331)	(188)
Total expenses	(251,588)	(143,353)
Loss from operations	(173,755)	(110,809)
Interest income, net	4,477	1,552
Other income, net	1,728	729
Loss before income taxes	(167,550)	(108,528)
Income tax (expense) benefit	(519)	3,412
Net loss	(168,069)	(105,116)
Less: net loss attributable to noncontrolling interests	(429)	(520)
Net loss attributable to BeiGene, Ltd.	$ (167,640)	$ (104,596)
Net loss per share attributable to BeiGene, Ltd., basic and diluted (in dollars per share)	$ (0.22)	$ (0.16)
Weighted-average shares outstanding, basic and diluted (shares)	774,750,255	670,510,605
Net loss per American Depositary Share (“ADS”), basic and diluted (in dollars per share)	$ (2.81)	$ (2.03)
Weighted-average ADSs outstanding, basic and diluted (shares)	59,596,173	51,577,739
Product revenue, net
Revenues
Revenues	$ 57,421	$ 23,250
Collaboration revenue
Revenues
Revenues	$ 20,412	$ 9,294

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
Net loss	$ (168,069)	$ (105,116)
Other comprehensive income, net of tax of nil:
Foreign currency translation adjustments	3,755	272
Unrealized holding gain, net	685	329
Comprehensive loss	(163,629)	(104,515)
Less: comprehensive loss attributable to noncontrolling interests	(535)	(456)
Comprehensive loss attributable to BeiGene, Ltd.	$ (163,094)	$ (104,059)

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)
Operating activities:
Net loss	$ (168,069)	$ (105,116)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	3,416	2,244
Share-based compensation expenses	26,392	17,396
Acquired in-process research and development	29,000	10,000
Non-cash interest expense	1,858	2,012
Deferred income tax benefits	(983)	(4,090)
Disposal gain on available-for-sale securities	(810)	(482)
Non-cash amortization of bond discount	(2,408)	0
Changes in operating assets and liabilities:
Accounts receivable	(17,920)	5,943
Unbilled receivable	2,498	(7,555)
Inventories	3,102	3,432
Prepaid expenses and other current assets	(8,270)	(13,758)
Operating lease right-of-use assets	(1,588)	0
Other non-current assets	(10,212)	(2,082)
Accounts payable	(20,364)	(18,487)
Accrued expenses and other payables	(8,790)	6,115
Tax payable	969	733
Deferred revenue	(2,238)	(1,739)
Other long-term liabilities	892	933
Operating lease liabilities	1,550	0
Net cash used in operating activities	(171,975)	(104,501)
Investing activities:
Purchases of property, plant and equipment	(21,828)	(9,696)
Purchases of investments	(487,354)	(632,224)
Proceeds from sale or maturity of investments	710,598	257,568
Purchase of in-process research and development	(29,000)	(10,000)
Net cash provided by (used in) investing activities	172,416	(394,352)
Financing activities:
Proceeds from follow-on public offering, net of underwriter discount	0	758,001
Payment of follow-on public offering cost	0	(414)
Proceeds from long-term loan	36,695	0
Proceeds from option exercises and employee share purchase plan	6,269	6,314
Net cash provided by financing activities	42,964	763,901
Effect of foreign exchange rate changes, net	4,265	3,444
Net increase in cash, cash equivalents, and restricted cash	47,670	268,492
Cash, cash equivalents, and restricted cash at beginning of period	740,713	239,602
Cash, cash equivalents, and restricted cash at end of period	788,383	508,094
Supplemental cash flow information:
Cash and cash equivalents	764,492	490,634
Restricted cash, current	14,900	17,460
Long-term restricted cash	8,991	0
Income taxes paid	360	329
Interest expense paid	888	331
Supplemental non-cash information:
Acquisitions of equipment included in accounts payable	32,462	3,640
Changes in operating assets and liabilities adjusted through accumulated deficit	$ 0	$ 2,291

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CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY Statement - USD ($) $ in Thousands	Total	Follow-on public offering	Total	Total Follow-on public offering	Ordinary Shares	Ordinary Shares Follow-on public offering	Additional Paid-In Capital	Additional Paid-In Capital Follow-on public offering	Accumulated Other Comprehensive Income	Accumulated Deficit	Noncontrolling Interests
Balance at the beginning of period at Dec. 31, 2017	$ 684,231		$ 669,809		$ 59		$ 1,000,747		$ (480)	$ (330,517)	$ 14,422
Balance at the beginning of period (in shares) at Dec. 31, 2017					592,072,330
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of options, ESPP and release of Restricted Share Units (RSUs)	6,314		6,314		$ 1		6,313
Exercise of options, ESPP and release of Restricted Share Units (RSUs) (in shares)					3,686,982
Issuance (use) of shares reserved for share option exercises (in shares)					213,018
Share-based compensation	17,396		17,396				17,396
Other comprehensive income	601		537						537		64
Net loss	(105,116)		(104,596)							(104,596)	(520)
Issuance of ordinary shares in connection with follow-on public offering		$ 757,587		$ 757,587		$ 10		$ 757,577
Issuance of ordinary shares in connection with follow-on public offering (in shares)						102,970,400
Balance at the ending of period (in shares) at Mar. 31, 2018					698,942,730
Balance at the end of period at Mar. 31, 2018	1,358,722		1,344,381		$ 70		1,782,033		320	(438,042)	14,341
Balance at the beginning of period at Dec. 31, 2018	$ 1,753,647		1,739,202		$ 77		2,744,814		1,526	(1,007,215)	14,445
Balance at the beginning of period (in shares) at Dec. 31, 2018	776,263,184				776,263,184
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of options, ESPP and release of Restricted Share Units (RSUs)	$ 6,269		6,269		$ 1		6,268
Exercise of options, ESPP and release of Restricted Share Units (RSUs) (in shares)					2,066,383
Issuance (use) of shares reserved for share option exercises (in shares)					(916,383)
Share-based compensation	26,392		26,392				26,392
Other comprehensive income	4,440		4,546						4,546		(106)
Net loss	$ (168,069)		(167,640)							(167,640)	(429)
Balance at the ending of period (in shares) at Mar. 31, 2019	777,413,184				777,413,184
Balance at the end of period at Mar. 31, 2019	$ 1,622,679		$ 1,608,769		$ 78		$ 2,777,474		$ 6,072	$ (1,174,855)	$ 13,910

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Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies

Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies

Description of business

BeiGene, Ltd. (the “Company”) is a commercial-stage biotechnology company focused on developing and commercializing innovative molecularly targeted and immuno-oncology drugs for the treatment of cancer. The Company’s internally-developed lead drug candidates are currently in late-stage clinical trials, and it is marketing three in-licensed drugs in China from which it has been generating product revenue since September 2017.

The Company was incorporated under the laws of the Cayman Islands as an exempted company with limited liability in October 2010. The Company completed its initial public offering (“IPO”) on the NASDAQ Global Select Market in February 2016 and has completed subsequent follow-on public offerings and a sale of ordinary shares to Celgene Switzerland LLC (“Celgene Switzerland”) in a business development transaction. On August 8, 2018, the Company completed its IPO on the Stock Exchange of Hong Kong Limited (“HKEx”) and a global follow-on public offering in which it raised approximately $869,709 in net proceeds, after deducting underwriting discounts and commissions and offering expenses. Effective August 8, 2018, the Company is dual-listed in both the United States and Hong Kong.

As of March 31, 2019, there were no changes to the Company's subsidiaries listed in Note 1 to the audited financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2018 ("Annual Report"), except for the addition of BeiGene Singapore Pte., Ltd., a new wholly-owned subsidiary of BeiGene, Ltd.

Basis of presentation and consolidation

The accompanying condensed consolidated balance sheet as of March 31, 2019, the condensed consolidated statements of operations and comprehensive loss for the three months ended March 31, 2019 and 2018, the condensed consolidated statements of cash flows and the condensed consolidated statements of shareholders' equity for the three months ended March 31, 2019 and 2018, and the related footnote disclosures are unaudited. The accompanying unaudited interim financial statements were prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), including guidance with respect to interim financial information and in conformity with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for annual financial statements. These financial statements should be read in conjunction with the condensed consolidated financial statements and related footnotes included in the Company’s Annual Report.

The unaudited condensed consolidated interim financial statements have been prepared on the same basis as the annual financial statements and, in the opinion of management, reflect all normal recurring adjustments, necessary to present a fair statement of the results for the interim periods presented. Results of the operations for the three months ended March 31, 2019 are not necessarily indicative of the results expected for the full fiscal year or for any future annual or interim period.

The condensed consolidated financial statements include the financial statements of the Company and its subsidiaries. All significant intercompany transactions and balances between the Company and its subsidiaries are eliminated upon consolidation.

Noncontrolling interests are recognized to reflect the portion of the equity of subsidiaries which are not attributable, directly or indirectly, to the controlling shareholders. The Company consolidates its interests in its joint venture, BeiGene Biologics Co., Ltd. ("BeiGene Biologics"), under the voting model and recognizes the minority shareholders' equity interest as a noncontrolling interest in its condensed consolidated financial statements (as described in Note 8).

Use of estimates

The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the period. Areas where management uses subjective judgment include, but are not limited to, estimating the useful lives of long-lived assets, estimating variable consideration in product sales and collaboration revenue arrangements, estimating the incremental borrowing rate for operating lease liabilities, identifying separate accounting units and the standalone selling price of each performance obligation in the Company’s revenue arrangements, estimating the fair value of net assets acquired in business combinations, assessing the impairment of long-lived assets, share-based compensation expenses, realizability of deferred tax assets, estimating uncertain tax positions and the fair value of financial instruments. Management bases the estimates on historical experience, known trends and various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results could differ from these estimates.

Recent accounting pronouncements

New accounting standards which have been adopted

In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-2, Leases. Subsequently, the FASB issued ASU 2018-1, Land Easement Practical Expedient, which provides an optional transition practical expedient for land easements, ASU 2018-10, Codification Improvements to Topic 842, Leases, which clarifies certain aspects of the guidance issued in ASU 2016-2; ASU 2018-11, Leases (Topic 842): Targeted Improvements, which provides an additional transition method and a practical expedient for separating components of a contract for lessors, ASU 2018-20, Leases (Topic 842)- Narrow-Scope Improvements for Lessors, which allows certain accounting policy elections for lessors; and ASU 2019-1, Leases (Topic 842): Codification Improvements, which clarifies certain aspects of the guidance (collectively, the "Lease ASUs"). The Lease ASUs require lessees to recognize assets and liabilities related to lease arrangements longer than 12 months on the balance sheet. This standard also requires additional disclosures by lessees and contains targeted changes to accounting by lessors. The updated guidance was effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. Leases will be classified as finance or operating, with the classification affecting the pattern and classification of expense recognition. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous GAAP. A modified retrospective transition approach is required, applying the new standard to all leases existing at the date of initial adoption. The guidance permits entities to choose to use either its effective date or the beginning of the earliest period presented in the financial statements as its date of initial application.

The Company adopted the new standard effective January 1, 2019 using the effective date method and did not restate comparative periods. The Company elected the package of practical expedients permitted under the transition guidance within the new standard, which permits the Company not to reassess under the new standard its prior conclusions about lease identification, lease classification and initial direct costs. Upon adoption, the Company recognized a lease liability of $27,446, with corresponding right-of-use ("ROU") assets of $25,978 based on the present value of the remaining minimum rental payments under existing operating leases. The difference between the lease liability and right-of-use asset relates to the reversal of existing deferred rent and prepaid rent balances of $1,739 and $271, respectively. Additionally, the Company reclassified its land use rights of $45,058 to ROU assets upon adoption. The adoption of the standard did not impact the Company’s condensed consolidated statements of operations or cash flows.

In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This update provides companies the option to reclassify to retained earnings the income tax accounting effects related to items originating in accumulated other comprehensive income ("AOCI") as a result of the U.S. Tax Cuts and Jobs Act ("TCJA") enacted on December 22, 2017. This update was effective in fiscal years, including interim periods, beginning after December 15, 2018, with early adoption permitted. None of the income tax accounting effects of the TCJA related to items that originated in AOCI and thus adopting of this standard did not have any impact on the Company’s condensed consolidated financial statements. Other tax effects of items that originate in AOCI will be removed when the underlying circumstance which gives rise to the tax impact no longer exists, based on an aggregate portfolio approach.

Impact of adopted accounting standards

The cumulative effect of changes made to the Company’s condensed consolidated January 1, 2019 balance sheet for the adoption of the Lease ASUs were as follows:

	Balance at	Adjustments		Balance at
	December 31,	Due to		January 1,
	2018	Lease ASUs		2019
	$	$		$
Assets:
Prepaid expenses and other current assets	81,942	(271	)	81,671
Land use right, net	45,058	(45,058	)	—
Operating lease right-of-use assets	—	71,036		71,036
Liabilities:
Accrued expenses and other payables	100,414	(888	)	99,526
Current portion of operating lease liabilities	—	8,684		8,684
Operating lease liabilities	—	18,762		18,762
Other long-term liabilities	38,931	(851	)	38,080

New accounting standards which have not yet been adopted

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses ("ASU 2016-13"). The amendments in ASU 2016-13 update guidance on reporting credit losses for financial assets. These amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. For public business entities that are U.S. SEC filers, ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework- Changes to the Disclosure Requirements for Fair Value Measurement. The update eliminates, modifies, and adds certain disclosure requirements for fair value measurements. This update is effective in fiscal years, including interim periods, beginning after December 15, 2019, and early adoption is permitted. The added disclosure requirements and the modified disclosure on the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented. All other changes to disclosure requirements in this update should be applied retrospectively to all periods presented upon their effective date. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. This update requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in ASC 350-40 to determine which implementation costs to defer and recognize as an asset. This update is effective in fiscal years, including interim periods, beginning after December 15, 2019, and early adoption is permitted. This guidance should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This update clarifies that certain transactions between participants in a collaborative arrangement should be accounted for under ASC 606 when the counterparty is a customer and precludes an entity from presenting consideration from a transaction in a collaborative arrangement as revenue from contracts with customers if the counterparty is not a customer for that transaction. The update is effective in fiscal years beginning after December 15, 2019, and interim periods therein, and early adoption is permitted for entities that have adopted ASC 606. This guidance should be applied retrospectively to the date of initial application of Topic 606. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

Significant accounting policies

For a more complete discussion of the Company’s significant accounting policies and other information, the condensed consolidated financial statements and notes thereto should be read in conjunction with the consolidated financial statements included in the Company’s Annual Report for the year ended December 31, 2018.

Leases

The Company determines if an arrangement is a lease at inception. The Company has lease agreements with lease and non-lease components, which are accounted for as a single lease component based on the Company’s policy election to combine lease and non-lease components for its leases. Leases are classified as operating or finance leases in accordance with the recognition criteria in ASC 842-20-25. The Company’s lease portfolio consists entirely of operating leases as of March 31, 2019. The Company’s leases do not contain any material residual value guarantees or material restrictive covenants.

At the commencement date of a lease, the Company determines the classification of the lease based on the relevant factors present and records a ROU asset and lease liability. ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. ROU assets and lease liabilities are calculated as the present value of the lease payments not yet paid. Variable lease payments not dependent on an index or rate are excluded from the ROU asset and lease liability calculations and are recognized in expense in the period which the obligation for those payments is incurred. As the rate implicit in the Company’s leases is not typically readily available, the Company uses an incremental borrowing rate based on the information available at the lease commencement date in determining the present value of lease payments. This incremental borrowing rate reflects the fixed rate at which the Company could borrow on a collateralized basis the amount of the lease payments in the same currency, for a similar term, in a similar economic environment. ROU assets include any lease prepayments and are reduced by lease incentives. Operating lease expense for lease payments is recognized on a straight-line basis over the lease term. Lease terms are based on the non-cancelable term of the lease and may contain options to extend the lease when it is reasonably certain that the Company will exercise that option.

Operating leases are included in operating lease right-of-use assets and lease liabilities on the condensed consolidated balance sheet. Lease liabilities that become due within one year of the balance sheet date are classified as current liabilities.

Leases with an initial lease term of 12 months or less are not recorded on the condensed consolidated balance sheet. Lease expense for these leases is recognized on a straight-line basis over the lease term.

Land Use Rights 

All land in the People's Republic of China ("PRC") is owned by the PRC government. The PRC government may sell land use rights for a specified period of time. Land use rights represent operating leases in accordance with ASC 842. The purchase price of land use rights represents lease prepayments to the PRC government and is recorded as an operating lease ROU asset on the balance sheet. The ROU asset is amortized over the remaining lease term.

In 2017, the Company acquired a land use right from the local Bureau of Land and Resources in Guangzhou for the purpose of constructing and operating the biologics manufacturing facility in Guangzhou. The Guangzhou land use right is being amortized over the term of the land use right, which is 50 years. 

In 2018, the Company acquired a second land use right in conjunction with the Innerway asset acquisition (see Note 4). The land use right is being amortized over the term of the land use right, which is 36 years.

Except for the changes to the Company’s significant accounting policies related to the adoption of the Lease ASUs, there have been no other material changes to the Company’s significant accounting policies as of and for the three months ended March 31, 2019, as compared to the significant accounting policies described in the Annual Report.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The Company measures certain financial assets and liabilities at fair value. Fair value is determined based upon the exit price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants, as determined by either the principal market or the most advantageous market. Inputs used in the valuation techniques to derive fair values are classified based on a three-level hierarchy, as follows:

Level 1 - Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets.

Level 2 – Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in market with insufficient volume or infrequent transactions (less active markets); or model-derived valuations in which all significant inputs are observable or can be derived principally from or corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability.

The Company considers an active market to be one in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis, and considers an inactive market to be one in which there are infrequent or few transactions for the asset or liability, the prices are not current, or price quotations vary substantially either over time or among market makers.

The following tables present the Company’s financial assets and liabilities measured and recorded at fair value on a recurring basis using the above input categories as of March 31, 2019 and December 31, 2018:

	Quoted Price
	in Active	Significant
	Market for	Other	Significant
	Identical	Observable	Unobservable
	Assets	Inputs	Inputs
As of March 31, 2019	(Level 1)	(Level 2)	(Level 3)
	$	$	$
Short-term investments (Note 5):
U.S. treasury securities	825,435	—	—
U.S. agency securities	23,732	—	—
Cash equivalents
U.S. treasury securities	124,856	—	—
Money market funds	59,884	—	—
Total	1,033,907	—	—

	Quoted Price
	in Active	Significant
	Market for	Other	Significant
	Identical	Observable	Unobservable
	Assets	Inputs	Inputs
As of December 31, 2018	(Level 1)	(Level 2)	(Level 3)
	$	$	$
Short-term investments (Note 5):
U.S. treasury securities	1,068,509	—	—
Cash equivalents
Money market funds	159,810	—	—
Total	1,228,319	—	—

 The Company had no liabilities measured and recorded at fair value on a recurring basis as of March 31, 2019 or December 31, 2018.

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Research and Development Collaborative Arrangements

3 Months Ended

Mar. 31, 2019

Research and Development [Abstract]

Research and Development Collaborative Arrangements

Research and Development Collaborative Arrangements

To date, the Company’s collaboration revenue has consisted of (1) upfront license fees, research and development reimbursement revenue, and research and development services revenue from its collaboration agreement with Celgene Corporation ("Celgene") on the Company’s investigational anti-programmed cell death protein 1 (“PD-1”) inhibitor, tislelizumab (BGB-A317), and (2) upfront license fees and milestone payments from its collaboration agreement with Merck KGaA, Darmstadt Germany on pamiparib (BGB-290) and lifirafenib (BGB-283). The collaboration agreement with Merck KGaA was terminated in December 2018.

The following table summarizes total collaboration revenue recognized for the three months ended March 31, 2019 and 2018:

	Three Months Ended
	March 31,
	2019	2018
	$	$
Reimbursement of research and development costs	18,174	7,555
Research and development service revenue	2,238	1,739
Total	20,412	9,294

For the three months ended March 31, 2019, the Company recognized collaboration revenue of $20,412. The Company recognized $18,174 of research and development reimbursement revenue for the three months ended March 31, 2019 for the trials that Celgene has opted into. The $2,238 of research and development services revenue for the three months ended March 31, 2019, primarily reflects the recognition of upfront consideration that was allocated to research and development services at the time of the collaboration and is recognized from deferred revenue over the term of the respective clinical studies for the specified indications.

For the three months ended March 31, 2018, the Company recognized collaboration revenue of $9,294. The Company recognized $7,555 of research and development reimbursement revenue for the three months ended March 31, 2018 for the trials that Celgene has opted into. The $1,739 of research and development services revenue reflects the recognition of upfront consideration that was allocated to research and development services at the time of the collaboration and is recognized from deferred revenue over the term of the respective clinical studies for the specified indications.

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Business Combinations and Asset Acquisitions

3 Months Ended

Mar. 31, 2019

Business Combinations [Abstract]

Business Combinations and Asset Acquisitions

Business Combinations and Asset Acquisitions

BeiGene Pharmaceuticals (Guangzhou) Co., Ltd.

 On September 21, 2018, BeiGene (Guangzhou) Co., Ltd. ("BeiGene Guangzhou") acquired 100% of the equity interests of Baiji Shenzhou (Guangzhou) Pharmaceuticals Co., Ltd. (formerly known as Huajian Pharmaceuticals Co., Ltd.), which subsequently changed its name to BeiGene Pharmaceuticals (Guangzhou) Co., Ltd., a pharmaceutical distribution company, for total cash consideration of $612, including transaction costs of $59. The acquisition was concentrated in a single identifiable asset, a drug distribution license, and thus the Company has concluded that the transaction is an asset acquisition as it does not meet the accounting definition of a business combination. The total cost was allocated to the drug distribution license and corresponding deferred tax liability, resulting in an $816 intangible asset for the license and a deferred tax liability of $204.

Beijing Innerway Bio-tech Co., Ltd.

On October 4, 2018, BeiGene (Hong Kong) Co., Ltd. ("BeiGene HK") completed the acquisition of 100% of the equity interest of Beijing Innerway Bio-tech Co., Ltd., the owner of the Company's research, development and office facility in Changping, Beijing, China, for total cash consideration of $38,654. The acquisition was concentrated in a single identifiable asset or group of assets, the building and associated land use right, and thus the Company has concluded that the transaction is an asset acquisition as it does not meet the accounting definition of a business combination. The total cost of the transaction of $38,865, which includes transaction costs of $211, was allocated based on the relative fair values of the net assets acquired, as follows:

	Amount
Land use right	$	33,783
Building	15,874
Deferred tax liability	(11,221		)
Other	429
Total cost	38,865

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Restricted Cash and Short-term Investments

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Restricted Cash and Short-term Investments

Restricted Cash and Short-term Investments

The Company’s restricted cash balance of $23,891 as of March 31, 2019 consisted of BeiGene Guangzhou Biologics Manufacturing Co., Ltd.'s ("BeiGene Guangzhou Factory's") secured deposits held in designated bank accounts for issuance of letter of credit, and restricted cash deposits as security for the long-term bank loan (Note 13).

Short-term investments as of March 31, 2019 consisted of the following available-for-sale debt securities:

		Gross	Gross	Fair Value
	Amortized	Unrealized	Unrealized	(Net Carrying
	Cost	Gains	Losses	Amount)
	$	$	$	$
U.S. treasury securities	823,079	2,356	—	825,435
U.S. agency securities	23,665	67	—	23,732
Total	846,744	2,423	—	849,167

Short-term investments as of December 31, 2018 consisted of the following available-for-sale debt securities:

		Gross	Gross	Fair Value
	Amortized	Unrealized	Unrealized	(Net Carrying
	Cost	Gains	Losses	Amount)
	$	$	$	$
U.S. treasury securities	1,066,770	1,802	63	1,068,509
Total	1,066,770	1,802	63	1,068,509

 The Company does not consider the investment in U.S. treasury securities or U.S. agency securities to be other-than-temporarily impaired at March 31, 2019.

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Inventories

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories

The Company’s inventory balance of $13,140 and $16,242 as of March 31, 2019 and December 31, 2018, respectively, consisted entirely of finished goods product purchased from Celgene for distribution in the PRC.

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Property and Equipment

3 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Property and Equipment

Property, plant and equipment

Property, plant and equipment are recorded at cost and consisted of the following:

	As of
	March 31,		December 31,
	2019		2018
	$		$
Laboratory equipment	24,771		22,636
Leasehold improvements	19,466		18,048
Building	15,905		15,857
Manufacturing equipment	16,806		16,048
Office equipment	2,526		2,216
Electronic equipment	1,745		1,229
Computer software	1,331		1,262
Property, plant and equipment, at cost	82,550		77,296
Less accumulated depreciation	(23,267	)	(19,722	)
Construction in progress	138,523		99,487
Property, plant and equipment, net	197,806		157,061

 As of March 31, 2019 and December 31, 2018, construction in progress of $138,523 and $99,487, respectively, primarily related to the buildout of the Guangzhou manufacturing facility. Depreciation expense for the three months ended March 31, 2019 and March 31, 2018 was $3,085 and $1,984, respectively.

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Manufacturing Facility in Guangzhou

3 Months Ended

Mar. 31, 2019

Equity Method Investments and Joint Ventures [Abstract]

Manufacturing Facility in Guangzhou

Manufacturing Facility in Guangzhou

On March 7, 2017, BeiGene HK, a wholly-owned subsidiary of the Company, and Guangzhou GET Technology Development Co., Ltd. (“GET”), entered into a definitive agreement to establish a commercial scale biologics manufacturing facility in Guangzhou, Guangdong Province, PRC.

On March 7, 2017, BeiGene HK and GET entered into an Equity Joint Venture Contract (the “JV Agreement”). Under the terms of the JV Agreement, BeiGene HK made an initial cash capital contribution of RMB200,000 and a subsequent contribution of one or more biologics assets in exchange for a 95% equity interest in BeiGene Biologics. GET made a cash capital contribution of RMB100,000 to BeiGene Biologics, representing a 5% equity interest in BeiGene Biologics. In addition, on March 7, 2017, BeiGene Biologics entered into a contract with GET, under which GET agreed to provide a RMB900,000 loan (the “Shareholder Loan”) to BeiGene Biologics (see Note 14). BeiGene Biologics is working to establish a biologics manufacturing facility in Guangzhou, through a wholly-owned subsidiary, the BeiGene Guangzhou Factory, to manufacture biologics for the Company and its subsidiaries.

On April 11, 2017, BeiGene HK, GET and BeiGene Biologics amended the JV Agreement and the capital contribution agreement, among other things, to adjust the capital contribution schedules and adjust the initial term of the governing bodies and a certain management position. On April 13, 2017 and May 4, 2017, BeiGene HK made cash capital contributions of RMB137,830 and RMB2,415, respectively, into BeiGene Biologics. The remainder of the cash capital contribution from BeiGene HK to BeiGene Biologics will be paid by April 10, 2020. On April 14, 2017, GET made cash capital contributions of RMB100,000 into BeiGene Biologics. On April 14, 2017, BeiGene Biologics drew down the Shareholder Loan of RMB900,000 from GET (as further described in Note 14).

In the fourth quarter of 2017, BeiGene HK and BeiGene Biologics entered into an Equity Transfer Agreement to transfer 100% of the equity interest of BeiGene Shanghai into BeiGene Biologics. The transfer consideration for the purchased interests under this Equity Transfer Agreement is the fair value of the 100% equity of BeiGene Shanghai appraised by a qualified Chinese valuation firm under the laws of the PRC. Upon the transfer of equity in BeiGene Shanghai, BeiGene HK’s equity interest in BeiGene Shanghai became 95%. As of March 31, 2019, the Company and GET held 95% and 5% equity interests in BeiGene Biologics, respectively.

As of March 31, 2019, the Company's cash and cash equivalents of $143,320 and restricted cash of $23,891 held by BeiGene Biologics to be used to build the commercial scale biologics facility and to fund research and development of the Company's biologics drug candidates in China.

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Leases (Notes)

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Leases

Leases

The Company has operating leases for office and manufacturing facilities in the United States, Switzerland, and China. The leases have remaining lease terms of up to five years, some of which include options to extend the leases that have not been included in the calculation of the Company’s lease liabilities and ROU assets. The Company has land use rights which represent land acquired for constructing and operating the biologics manufacturing facility in Guangzhou, and the land acquired for the Company's research, development and office facility in Changping, Beijing. The land use rights represent lease prepayments and are expensed over the remaining term of the rights, which is 48 years for the Guangzhou land use right and 35 years for the Changping land use right. The Company also has certain leases with terms of 12 months or less for certain equipment, office and lab space, which are not recorded to the balance sheet.

The components of lease expense were as follows:

	Three months ended
	March 31,
	2019
	$
Operating lease cost	3,393
Variable lease cost	297
Short-term lease cost	133
Total lease cost	3,823

Total expenses under operating leases were $1,653 for the three months ended March 31, 2018.

Supplemental balance sheet information related to leases was as follows:

	As of
	March 31,
	2019
	$
Operating lease right-of-use assets	27,518
Land use rights, net	45,106
Total operating lease right-of-use assets	72,624
Current portion of operating lease liabilities	9,451
Operating lease liabilities	19,545
Total lease liabilities	28,996

Maturities of operating lease liabilities are as follows (2):

	$
Nine months ending December 31, 2019	8,675
Year ending December 31, 2020	10,583
Year ending December 31, 2021	8,123
Year ending December 31, 2022	4,173
Year ending December 31, 2023	1,445
Thereafter	104
Total lease payments	33,103
Less imputed interest	(4,107	)
Present value of lease liabilities	28,996

(2) As of March 31, 2019, the Company has additional operating leases for office facilities that have not yet commenced of $5,858. These operating leases will commence during the fiscal year 2019 with lease terms of up to three years.

Other supplemental information related to leases is summarized below:    

	Three months ended
	March 31,
	2019
	$
Operating cash flows used in operating leases	2,994
ROU assets obtained in exchange for new operating lease liabilities	3,464

	As of
	March 31,
	2019
	$
Weighted-average remaining lease term (years)	3
Weighted-average discount rate	8.37	%

The Company adopted the Lease ASUs effective January 1, 2019 and did not restate prior periods. The undiscounted future minimum payments under non-cancelable operating leases as of December 31, 2018, prior to the adoption of the Lease ASUs was as follows:

	$
Year ending December 31:
2019	10,752
2020	9,972
2021	7,805
2022	3,923
2023 and thereafter	1,357
Total	33,809

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Intangible Assets

3 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets

Intangible assets as of March 31, 2019 and December 31, 2018 are summarized as follows:

	As of
	March 31, 2019				December 31, 2018
	Gross				Gross
	carrying	Accumulated		Intangible	carrying	Accumulated		Intangible
	amount	amortization		assets, net	amount	amortization		assets, net
	$	$		$	$	$		$
Finite-lived intangible assets:
Product distribution rights	7,500	(1,187	)	6,313	7,500	(1,000	)	6,500
Trading license	816	(288	)	528	816	(144	)	672
Total finite-lived intangible assets	8,316	(1,475	)	6,841	8,316	(1,144	)	7,172

 Product distribution rights consist of distribution rights on the approved cancer therapies licensed from Celgene, ABRAXANE^®, REVLIMID^®, and VIDAZA^®, and its investigational agent CC-122 acquired as part of the Celgene transaction. The Company is amortizing the product distribution rights over a period of 10 years. The trading license represents the Guangzhou drug distribution license acquired on September 21, 2018. The Company is amortizing the drug distribution trading license over the remainder of the license term through February 2020.

Amortization expense of intangible assets for the three months ended March 31, 2019 and March 31, 2018 was $331 and$188, respectively. As of March 31, 2019, expected amortization expense for the unamortized finite-lived intangible assets is approximately $995 for the remainder of 2019, $846 in 2020, $750 in 2021, $750 in 2022, $750 in 2023, and $2,750 in 2024 and thereafter.

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Income Taxes

3 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

Income tax expense was $519 for the three months ended March 31, 2019, and income tax benefit was $3,412 for the three months ended March 31, 2018. The income tax expense for the three months ended March 31, 2019 was primarily attributable to income reported in the U.S. and certain China subsidiaries offset by U.S. research and development tax credits and other special tax deductions. The income tax benefit for the three months ended March 31, 2018 was primarily attributable to U.S. research and development tax credits and the discrete tax benefit of employee stock option exercises.

On a quarterly basis, the Company evaluates the realizability of deferred tax assets by jurisdiction and assesses the need for a valuation allowance. In assessing the realizability of deferred tax assets, the Company considers historical profitability, evaluation of scheduled reversals of deferred tax liabilities, projected future taxable income and tax-planning strategies. Valuation allowances have been provided on deferred tax assets where, based on all available evidence, it was considered more likely than not that some portion or all of the recorded deferred tax assets will not be realized in future periods. After consideration of all positive and negative evidence, the Company believes that as of March 31, 2019, it is more likely than not the deferred tax assets will not be realized for the Company’s subsidiaries in Australia and Switzerland, as well as certain subsidiaries in China.

As of March 31, 2019, the Company had gross unrecognized tax benefits of $2,559. The Company does not anticipate that the amount of existing unrecognized tax benefits will significantly change within the next 12 months. The Company’s reserve for uncertain tax positions increased by $264 in the three months ended March 31, 2019 due to additions related to U.S. federal and state tax credits and incentives.

The Company has elected to record interest and penalties related to income taxes as a component of income tax expense. As of March 31, 2019 and December 31, 2018, the Company's accrued interest and penalties, where applicable, related to uncertain tax positions were not material.

The Company conducts business in a number of tax jurisdictions and, as such, is required to file income tax returns in multiple jurisdictions globally. As of March 31, 2019, Australia tax matters are open to examination for the years 2013 through 2019, China tax matters are open to examination for the years 2013 through 2019 and U.S. federal tax matters are open to examination for years 2015 through 2019. Various U.S. states and other non-US tax jurisdictions in which the Company files tax returns remain open to examination for 2010 through 2019.

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Supplemental Balance Sheet Information

3 Months Ended

Mar. 31, 2019

Balance Sheet Related Disclosures [Abstract]

Supplemental Balance Sheet Information

Supplemental Balance Sheet Information

Prepaid expenses and other current assets consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Prepaid research and development costs	66,817	58,673
Prepaid taxes	9,078	10,479
Interest receivable	2,580	3,096
Other	11,466	9,694
Total	89,941	81,942

Other non-current assets consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Prepayment of long-term assets	10,035	11,981
Prepayment of facility capacity expansion activities (1)	25,809	25,193
Prepaid VAT	19,768	14,671
Rental deposits and other	2,993	1,823
Total	58,605	53,668

(1) Represents a payment for a facility expansion under a commercial supply agreement. The payment will be credited back to the Company through credits on supply purchases over the life of the supply agreement.

Accrued expenses and other payables consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Compensation related	18,540	35,887
External research and development activities related	46,889	34,588
Commercial activities	9,437	10,433
Individual income tax and other taxes	8,626	8,030
Sales rebates and returns related	3,366	4,749
Professional fees and other	3,879	6,727
Total	90,737	100,414

Other long-term liabilities consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Deferred government grant income	38,776	37,851
Other	196	1,080
Total	38,972	38,931

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Long-term Bank Loans

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Long-term Bank Loans

Long-term Bank Loans

On September 2, 2015, BeiGene (Suzhou) Co., Ltd. ("BeiGene (Suzhou)") entered into a loan agreement with Suzhou Industrial Park Biotech Development Co., Ltd. and China Construction Bank to borrow RMB120,000 at a 7% fixed annual interest rate. The loan is secured by BeiGene (Suzhou)’s equipment with a net carrying amount of $13,500 and the Company’s rights to a PRC patent on a drug candidate. In September 2018, the Company repaid the first tranche of $8,736 (RMB60,000). The remaining loan principal amount outstanding as of March 31, 2019 of $8,940 (RMB60,000) is repayable on September 30, 2019.

 On April 4, 2018, BeiGene Guangzhou Factory entered into a nine-year loan agreement with China Construction Bank to borrow a RMB denominated loan of RMB580,000 at a floating interest rate benchmarking RMB loans interest rate of financial institutions in PRC. The loan is secured by BeiGene Guangzhou Factory’s land use right. Interest expense will be paid quarterly until the loan is fully settled. As of March 31, 2019, the Company has drawn down $77,480 (RMB520,000) of this loan, of which $36,695 (RMB240,000) was drawn down during the three months ended March 31, 2019. The loan interest rate was 4.9% for the three months ended March 31, 2019, and the maturity dates range from 2021 to 2027.

 As of March 31, 2019, the Company has unused long-term credit availability amounting to $8,940, attributed to the remaining credit available under the Guangzhou Factory loan. The Company plans to draw down the entire available amount before December 31, 2019. Interest expense recognized for the three months ended March 31, 2019 and 2018 was $941 and $331, respectively, among which, $641 and nil was capitalized, respectively.

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Shareholder Loan

3 Months Ended

Mar. 31, 2019

Related Party Transactions [Abstract]

Shareholder Loan

Shareholder Loan

On March 7, 2017, BeiGene Biologics entered into the Shareholder Loan Contract with GET, pursuant to which GET agreed to provide a Shareholder Loan of RMB900,000 to BeiGene Biologics. The Shareholder Loan has a conversion feature, settled in a variable number of shares of common stock upon conversion (the “debt-to-equity conversion”). On April 14, 2017, BeiGene Biologics drew down the entire Shareholder Loan of RMB900,000 from GET.

Key features of the Shareholder Loan

The Shareholder Loan bears simple interest at a fixed rate of 8% per annum. No interest payment is due or payable prior to the repayment of the principal or the debt-to-equity conversion. The term of the Shareholder Loan is 72 months, commencing from the actual drawdown date of April 14, 2017 and ending on April 13, 2023, unless converted earlier.

The Shareholder Loan may be repaid or converted, either partially or in full, into an additional mid-single digit percentage equity interest in BeiGene Biologics prior to its maturity date, pursuant to the terms of the JV Agreement. BeiGene Biologics has the right to make early repayment at any time; provided, however, that if repayment is to occur before the debt-to-equity conversion it would require written approval of both BeiGene Biologics and GET. Upon conversion of the shareholder loan, GET will receive an additional equity interest in BeiGene Biologics, which will be based on the formula outlined in the JV Agreement.

The Shareholder Loan can only be used for BeiGene Biologics, including the construction and operation of the biologics manufacturing facility and research and development and clinical trials to be carried out by BeiGene Biologics. If BeiGene Biologics does not use the Shareholder Loan proceeds for the specified purposes, GET may be entitled to certain liquidated damages. In the event of an early termination of the JV Agreement, the Shareholder Loan will become due and payable at the time of termination of the JV Agreement.

Accounting for the Shareholder Loan

The Shareholder Loan is classified as a long-term liability and initially measured at the principal of RMB900,000. Interest will be accrued based on the interest rate of 8% per annum. As the Shareholder Loan may be share-settled by a number of shares with a fair value equal to a fixed settlement amount, the settlement is not viewed as a conversion feature, but as a redemption feature because the settlement amount does not vary with the share price. This in-substance redemption feature does not require bifurcation because it is clearly and closely related to the debt host that does not involve a substantial premium or discount. Since there is no conversion feature embedded in the Shareholder Loan, no beneficial conversion feature was recorded. There are no other embedded derivatives that are required to be bifurcated. The portion of interest accrued on the Shareholder Loan related to borrowings used to construct the BeiGene factory in Guangzhou is being capitalized in accordance with ASC 835-20, Interest – Capitalization of Interest.

For the three months ended March 31, 2019 and 2018, total interest expense generated from the Shareholder Loan was $2,645 and $3,280, respectively, among which, $788 and $815 was capitalized, respectively.

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Product Revenue

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Product Revenue

Product Revenue

The Company’s product sales are derived from the sale of ABRAXANE^®, REVLIMID^®, and VIDAZA^® in China under a distribution license from Celgene. The table below presents the Company’s net product sales for the three months ended March 31, 2019 and 2018.

	Three Months Ended
	March 31,
	2019		2018
	$		$
Product revenue – gross	58,536		23,485
Less: Rebates and sales returns	(1,115	)	(235	)
Product revenue – net	57,421		23,250

 The following table presents the roll-forward of accrued sales rebates and returns for the three months ended March 31, 2019:

	Sales Rebates and Returns
	$
Balance as of December 31, 2018	4,749
Accrual	1,115
Payments	(2,498	)
Balance as of March 31, 2019	3,366

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Loss Per Share

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Loss Per Share

Loss Per Share

Loss per share was calculated as follows:

	Three Months Ended
	March 31,
	2019			2018
	(in thousands, except share and per share data)
Numerator:
Net loss attributable to BeiGene, Ltd.	$	(167,640	)	$	(104,596	)
Denominator:
Weighted average shares outstanding, basic and diluted	774,750,255			670,510,605
Net loss per share attributable to BeiGene, Ltd., basic and diluted	$	(0.22	)	$	(0.16	)

The effects of all share options, restricted shares and restricted share units were excluded from the calculation of diluted loss per share, as their effect would have been anti-dilutive during the three months ended March 31, 2019 and 2018.

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Share-Based Compensation Expense

3 Months Ended

Mar. 31, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation Expense

Share-Based Compensation Expense

2016 Share Option and Incentive Plan

On January 14, 2016, in connection with its U.S. IPO, the board of directors and shareholders of the Company approved the 2016 Share Option and Incentive Plan (the “2016 Plan”), which became effective on February 2, 2016. The Company initially reserved 65,029,595 ordinary shares for the issuance of awards under the 2016 Plan, plus any shares available under the 2011 Option Plan (the “2011 Plan”), and not subject to any outstanding options as of the effective date of the 2016 Plan, along with underlying share awards under the 2011 Plan that are cancelled or forfeited without issuance of ordinary shares. As of March 31, 2019, ordinary shares cancelled or forfeited under the 2011 Plan that were carried over to the 2016 Plan totaled 5,144,371. The 2016 Plan provided for an annual increase in the shares available for issuance, to be added on the first day of each fiscal year, beginning on January 1, 2017, equal to the lesser of (i) five percent (5%) of the outstanding shares of the Company’s ordinary shares on the last day of the immediately preceding fiscal year or (ii) such number of shares determined by the Company’s board of directors or the compensation committee. In August 2018, in connection with the Hong Kong IPO, the board of directors of the Company approved an amended and restated 2016 Plan to remove this “evergreen” provision and implement other changes required by the HKEx rules. In December 2018, the board of directors approved a second amended and restated 2016 Plan to increase the number of shares authorized for issuance by 38,553,159 ordinary shares, as well as amend the cap on annual compensation to independent directors and make other changes. The number of shares available for issuance under the 2016 Plan is subject to adjustment in the event of a share split, share dividend or other change in the Company’s capitalization.

During the three months ended March 31, 2019, the Company granted options for 590,967 ordinary shares and restricted share units for 2,266,550 ordinary shares under the 2016 Plan. As of March 31, 2019, options and restricted share units for ordinary shares outstanding under the 2016 Plan totaled 80,307,682 and 12,078,638, respectively.

2018 Inducement Equity Plan

On June 6, 2018, the board of directors of the Company approved the 2018 Inducement Equity Plan (the “2018 Plan”) and reserved 12,000,000 ordinary shares to be used exclusively for grants of awards to individuals that were not previously employees of the Company or its subsidiaries, as a material inducement to the individual’s entry into employment with the Company or its subsidiaries within the meaning of Rule 5635(c)(4) of the NASDAQ Listing Rules. The 2018 Plan was approved by the board of directors upon recommendation of the compensation committee, without shareholder approval pursuant to Rule 5635(c)(4) of the NASDAQ Listing Rules. The terms and conditions of the 2018 Plan, and the forms of award agreements to be used thereunder, are substantially similar to the 2016 Plan and the forms of award agreements thereunder. In August 2018, in connection with the listing of the Company’s ordinary shares on the HKEx, the board of directors of the Company approved an amended and restated 2018 Plan to implement changes required by the HKEx rules.

During the three months ended March 31, 2019, the Company did not grant any options or restricted share units under the 2018 Plan. As of March 31, 2019, options and restricted share units for ordinary shares outstanding under the 2018 Plan totaled 79,404 and 3,542,773, respectively.

2018 Employee Share Purchase Plan

On June 6, 2018, the shareholders of the Company approved the 2018 Employee Share Purchase Plan (the “ESPP”).  Initially, 3,500,000 ordinary shares of the Company were reserved for issuance under the ESPP. In August 2018, in connection with the Hong Kong IPO, the board of directors of the Company approved an amended and restated ESPP to remove an “evergreen” share replenishment provision originally included in the plan and implement other changes required by the HKEx rules. In December 2018, the board of directors approved a second amended and restated ESPP to increase the number of shares authorized for issuance by 3,855,315 ordinary shares to 7,355,315 ordinary shares. The ESPP allows eligible employees to purchase the Company’s ordinary shares (including in the form of ADSs) at the end of each offering period, which will generally be six months, at a 15% discount to the market price of the Company’s ADSs at the beginning or the end of each offering period, whichever is lower, using funds deducted from their payroll during the offering period. Eligible employees are able to authorize payroll deductions of up to 10% of their eligible earnings, subject to applicable limitations.

On February 28, 2019, the Company issued 154,505 ordinary shares to employees for aggregate proceeds of $1,385. The purchase price of the shares was $116.49 per ADS, or $8.96 per ordinary share, which was discounted in accordance with the terms of the ESPP from the closing price on NASDAQ on February 28, 2019 of $137.05 per ADS, or $10.54 per ordinary shares.

The following table summarizes total share-based compensation expense recognized for the three months ended March 31, 2019 and 2018:

	Three Months Ended
	March 31,
	2019	2018
	$	$
Research and development	15,771	12,052
Selling, general and administrative	10,621	5,344
Total	26,392	17,396

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Accumulated Other Comprehensive Income

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Accumulated Other Comprehensive Income

Accumulated Other Comprehensive Income

The movement of accumulated other comprehensive income was as follows:

			Unrealized
	Foreign Currency		Gains on
	Translation		Available-for-Sale
	Adjustments		Securities		Total
	$		$		$
Balance as of December 31, 2018	(212	)	1,738		1,526
Other comprehensive income before reclassifications	3,861		1,495		5,356
Amounts reclassified from accumulated other comprehensive income	—		(810	)	(810	)
Net-current period other comprehensive income	3,861		685		4,546
Balance as of March 31, 2019	3,649		2,423		6,072

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Shareholders’ Equity

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Shareholders’ Equity

Shareholders’ Equity

Follow-on public offerings

On August 8, 2018, the Company completed an initial public offering of its ordinary shares on the Hong Kong Stock Exchange and a follow-on public offering under the Company's effective Registration Statement on Form S-3 at a price of $13.76 per ordinary share, or $178.90 per ADS. In this offering, the Company sold 65,600,000 ordinary shares. Net proceeds after deducting underwriting discounts and commissions and offering expenses were $869,709.

On January 22, 2018, the Company completed a follow-on public offering under the Company’s effective Registration Statement on Form S-3 at a price of $101.00 per ADS, or $7.77 per ordinary share. In this offering, the Company sold 7,425,750 ADSs representing 96,534,750 ordinary shares. Additionally, the underwriters exercised their option to purchase an additional 495,050 ADSs representing 6,435,650 ordinary shares from the Company. Net proceeds from this offering, including the underwriter option, after deducting the underwriting discounts and offering expenses were $757,587.

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Restricted Net Assets

3 Months Ended

Mar. 31, 2019

Restricted Net Assets Disclosure [Abstract]

Restricted Net Assets

Restricted Net Assets

The Company’s ability to pay dividends may depend on the Company receiving distributions of funds from its PRC subsidiaries. Relevant PRC statutory laws and regulations permit payments of dividends by the Company’s PRC subsidiaries only out of the subsidiary's retained earnings, if any, as determined in accordance with PRC accounting standards and regulations. The results of operations reflected in the condensed consolidated financial statements prepared in accordance with GAAP differ from those reflected in the statutory financial statements of the Company’s PRC subsidiaries.

In accordance with the company law of the PRC, a domestic enterprise is required to provide statutory reserves of at least 10% of its annual after-tax profit until such reserve has reached 50% of its respective registered capital based on the enterprise’s PRC statutory accounts. A domestic enterprise is also required to provide discretionary surplus reserve, at the discretion of the Board of Directors, from the profits determined in accordance with the enterprise’s PRC statutory accounts. The aforementioned reserves can only be used for specific purposes and are not distributable as cash dividends. The Company’s PRC subsidiaries were established as domestic invested enterprises and therefore were subject to the above-mentioned restrictions on distributable profits.

During the three months ended March 31, 2019 and 2018, no appropriation to statutory reserves was made because the PRC subsidiaries had substantial losses during such periods.

As a result of these PRC laws and regulations, including the requirement to make annual appropriations of at least 10% of after-tax income and set aside as general reserve fund prior to payment of dividends, the Company’s PRC subsidiaries are restricted in their ability to transfer a portion of their net assets to the Company.

Foreign exchange and other regulation in the PRC may further restrict the Company's PRC subsidiaries from transferring funds to the Company in the form of dividends, loans and advances. As of March 31, 2019 and December 31, 2018, amounts restricted were the net assets of the Company’s PRC subsidiaries, which amounted to $105,688 and $93,281, respectively.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Purchase Commitments

As of March 31, 2019, the Company had purchase commitments amounting to $56,135 related to minimum purchase requirements for finished goods inventory purchased from Celgene.

Capital commitments

The Company had capital commitments amounting to $26,647 for the acquisition of property, plant and equipment as of March 31, 2019, which were mainly for BeiGene Guangzhou Factory’s manufacturing facility in Guangzhou, China.

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Segment and geographic information

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Segment and geographic information

Segment and geographic information

The Company operates in one segment. The Company’s long-lived assets are substantially located in the PRC. Net product revenues by geographic area are based upon the location of the customer, and net collaboration revenue is recorded in the jurisdiction in which the related income is expected to be sourced from. Total net revenues by geographic area are presented as follows:

	Three Months Ended
	March 31,
	2019	2018
	$	$
PRC	57,421	23,250
United States	13,268	6,041
Other	7,144	3,253
Total	77,833	32,544

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Subsequent Event

3 Months Ended

Mar. 31, 2019

Subsequent Events [Abstract]

Subsequent event

Subsequent Event

On April 9, 2019, the Company entered into a global co-development and collaboration agreement with BioAtla LLC ("BioAtla") for the development, manufacturing and commercialization of BioAtla's investigational CAB-CTLA-4 antibody (BA3071), whereby BioAtla will co-develop the CAB-CTLA-4 antibody to defined early clinical objectives and the Company will then lead the parties' joint efforts to develop the product candidate and be responsible for global regulatory filings and commercialization. Subject to the terms of the agreement, the Company will hold a co-exclusive license with BioAtla to develop and manufacture the product candidate globally and an exclusive license to commercialize the product candidate globally. The Company will be responsible for all costs of development, manufacturing and commercialization in Asia (excluding Japan), Australia and New Zealand (the "Company Territory"), and the parties will share development and manufacturing costs and commercial profits and losses upon specified terms in the rest of the world. BioAtla received an upfront payment of $20,000, and will receive a milestone payment upon reaching the defined early clinical objectives. BioAtla is also eligible to receive additional payments in subsequent development and regulatory milestones globally and commercial milestones in the Company Territory, together with tiered royalties on sales in the Company territory.

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Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of presentation and consolidation

Basis of presentation and consolidation

The accompanying condensed consolidated balance sheet as of March 31, 2019, the condensed consolidated statements of operations and comprehensive loss for the three months ended March 31, 2019 and 2018, the condensed consolidated statements of cash flows and the condensed consolidated statements of shareholders' equity for the three months ended March 31, 2019 and 2018, and the related footnote disclosures are unaudited. The accompanying unaudited interim financial statements were prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), including guidance with respect to interim financial information and in conformity with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for annual financial statements. These financial statements should be read in conjunction with the condensed consolidated financial statements and related footnotes included in the Company’s Annual Report.

The unaudited condensed consolidated interim financial statements have been prepared on the same basis as the annual financial statements and, in the opinion of management, reflect all normal recurring adjustments, necessary to present a fair statement of the results for the interim periods presented. Results of the operations for the three months ended March 31, 2019 are not necessarily indicative of the results expected for the full fiscal year or for any future annual or interim period.

The condensed consolidated financial statements include the financial statements of the Company and its subsidiaries. All significant intercompany transactions and balances between the Company and its subsidiaries are eliminated upon consolidation.

Noncontrolling interests are recognized to reflect the portion of the equity of subsidiaries which are not attributable, directly or indirectly, to the controlling shareholders. The Company consolidates its interests in its joint venture, BeiGene Biologics Co., Ltd. ("BeiGene Biologics"), under the voting model and recognizes the minority shareholders' equity interest as a noncontrolling interest in its condensed consolidated financial statements (as described in Note 8).

Use of estimates

Use of estimates

The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the period. Areas where management uses subjective judgment include, but are not limited to, estimating the useful lives of long-lived assets, estimating variable consideration in product sales and collaboration revenue arrangements, estimating the incremental borrowing rate for operating lease liabilities, identifying separate accounting units and the standalone selling price of each performance obligation in the Company’s revenue arrangements, estimating the fair value of net assets acquired in business combinations, assessing the impairment of long-lived assets, share-based compensation expenses, realizability of deferred tax assets, estimating uncertain tax positions and the fair value of financial instruments. Management bases the estimates on historical experience, known trends and various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results could differ from these estimates.

Recent accounting pronouncements

Recent accounting pronouncements

New accounting standards which have been adopted

In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-2, Leases. Subsequently, the FASB issued ASU 2018-1, Land Easement Practical Expedient, which provides an optional transition practical expedient for land easements, ASU 2018-10, Codification Improvements to Topic 842, Leases, which clarifies certain aspects of the guidance issued in ASU 2016-2; ASU 2018-11, Leases (Topic 842): Targeted Improvements, which provides an additional transition method and a practical expedient for separating components of a contract for lessors, ASU 2018-20, Leases (Topic 842)- Narrow-Scope Improvements for Lessors, which allows certain accounting policy elections for lessors; and ASU 2019-1, Leases (Topic 842): Codification Improvements, which clarifies certain aspects of the guidance (collectively, the "Lease ASUs"). The Lease ASUs require lessees to recognize assets and liabilities related to lease arrangements longer than 12 months on the balance sheet. This standard also requires additional disclosures by lessees and contains targeted changes to accounting by lessors. The updated guidance was effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. Leases will be classified as finance or operating, with the classification affecting the pattern and classification of expense recognition. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous GAAP. A modified retrospective transition approach is required, applying the new standard to all leases existing at the date of initial adoption. The guidance permits entities to choose to use either its effective date or the beginning of the earliest period presented in the financial statements as its date of initial application.

The Company adopted the new standard effective January 1, 2019 using the effective date method and did not restate comparative periods. The Company elected the package of practical expedients permitted under the transition guidance within the new standard, which permits the Company not to reassess under the new standard its prior conclusions about lease identification, lease classification and initial direct costs. Upon adoption, the Company recognized a lease liability of $27,446, with corresponding right-of-use ("ROU") assets of $25,978 based on the present value of the remaining minimum rental payments under existing operating leases. The difference between the lease liability and right-of-use asset relates to the reversal of existing deferred rent and prepaid rent balances of $1,739 and $271, respectively. Additionally, the Company reclassified its land use rights of $45,058 to ROU assets upon adoption. The adoption of the standard did not impact the Company’s condensed consolidated statements of operations or cash flows.

In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This update provides companies the option to reclassify to retained earnings the income tax accounting effects related to items originating in accumulated other comprehensive income ("AOCI") as a result of the U.S. Tax Cuts and Jobs Act ("TCJA") enacted on December 22, 2017. This update was effective in fiscal years, including interim periods, beginning after December 15, 2018, with early adoption permitted. None of the income tax accounting effects of the TCJA related to items that originated in AOCI and thus adopting of this standard did not have any impact on the Company’s condensed consolidated financial statements. Other tax effects of items that originate in AOCI will be removed when the underlying circumstance which gives rise to the tax impact no longer exists, based on an aggregate portfolio approach.

Impact of adopted accounting standards

The cumulative effect of changes made to the Company’s condensed consolidated January 1, 2019 balance sheet for the adoption of the Lease ASUs were as follows:

	Balance at	Adjustments		Balance at
	December 31,	Due to		January 1,
	2018	Lease ASUs		2019
	$	$		$
Assets:
Prepaid expenses and other current assets	81,942	(271	)	81,671
Land use right, net	45,058	(45,058	)	—
Operating lease right-of-use assets	—	71,036		71,036
Liabilities:
Accrued expenses and other payables	100,414	(888	)	99,526
Current portion of operating lease liabilities	—	8,684		8,684
Operating lease liabilities	—	18,762		18,762
Other long-term liabilities	38,931	(851	)	38,080

New accounting standards which have not yet been adopted

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses ("ASU 2016-13"). The amendments in ASU 2016-13 update guidance on reporting credit losses for financial assets. These amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. For public business entities that are U.S. SEC filers, ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework- Changes to the Disclosure Requirements for Fair Value Measurement. The update eliminates, modifies, and adds certain disclosure requirements for fair value measurements. This update is effective in fiscal years, including interim periods, beginning after December 15, 2019, and early adoption is permitted. The added disclosure requirements and the modified disclosure on the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented. All other changes to disclosure requirements in this update should be applied retrospectively to all periods presented upon their effective date. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. This update requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in ASC 350-40 to determine which implementation costs to defer and recognize as an asset. This update is effective in fiscal years, including interim periods, beginning after December 15, 2019, and early adoption is permitted. This guidance should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This update clarifies that certain transactions between participants in a collaborative arrangement should be accounted for under ASC 606 when the counterparty is a customer and precludes an entity from presenting consideration from a transaction in a collaborative arrangement as revenue from contracts with customers if the counterparty is not a customer for that transaction. The update is effective in fiscal years beginning after December 15, 2019, and interim periods therein, and early adoption is permitted for entities that have adopted ASC 606. This guidance should be applied retrospectively to the date of initial application of Topic 606. The Company is currently evaluating the impact on its financial statements of adopting this guidance.

Significant accounting policies

For a more complete discussion of the Company’s significant accounting policies and other information, the condensed consolidated financial statements and notes thereto should be read in conjunction with the consolidated financial statements included in the Company’s Annual Report for the year ended December 31, 2018.

Leases

The Company determines if an arrangement is a lease at inception. The Company has lease agreements with lease and non-lease components, which are accounted for as a single lease component based on the Company’s policy election to combine lease and non-lease components for its leases. Leases are classified as operating or finance leases in accordance with the recognition criteria in ASC 842-20-25. The Company’s lease portfolio consists entirely of operating leases as of March 31, 2019. The Company’s leases do not contain any material residual value guarantees or material restrictive covenants.

At the commencement date of a lease, the Company determines the classification of the lease based on the relevant factors present and records a ROU asset and lease liability. ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. ROU assets and lease liabilities are calculated as the present value of the lease payments not yet paid. Variable lease payments not dependent on an index or rate are excluded from the ROU asset and lease liability calculations and are recognized in expense in the period which the obligation for those payments is incurred. As the rate implicit in the Company’s leases is not typically readily available, the Company uses an incremental borrowing rate based on the information available at the lease commencement date in determining the present value of lease payments. This incremental borrowing rate reflects the fixed rate at which the Company could borrow on a collateralized basis the amount of the lease payments in the same currency, for a similar term, in a similar economic environment. ROU assets include any lease prepayments and are reduced by lease incentives. Operating lease expense for lease payments is recognized on a straight-line basis over the lease term. Lease terms are based on the non-cancelable term of the lease and may contain options to extend the lease when it is reasonably certain that the Company will exercise that option.

Operating leases are included in operating lease right-of-use assets and lease liabilities on the condensed consolidated balance sheet. Lease liabilities that become due within one year of the balance sheet date are classified as current liabilities.

Leases with an initial lease term of 12 months or less are not recorded on the condensed consolidated balance sheet. Lease expense for these leases is recognized on a straight-line basis over the lease term.

Land Use Rights 

All land in the People's Republic of China ("PRC") is owned by the PRC government. The PRC government may sell land use rights for a specified period of time. Land use rights represent operating leases in accordance with ASC 842. The purchase price of land use rights represents lease prepayments to the PRC government and is recorded as an operating lease ROU asset on the balance sheet. The ROU asset is amortized over the remaining lease term.

In 2017, the Company acquired a land use right from the local Bureau of Land and Resources in Guangzhou for the purpose of constructing and operating the biologics manufacturing facility in Guangzhou. The Guangzhou land use right is being amortized over the term of the land use right, which is 50 years. 

In 2018, the Company acquired a second land use right in conjunction with the Innerway asset acquisition (see Note 4). The land use right is being amortized over the term of the land use right, which is 36 years.

Except for the changes to the Company’s significant accounting policies related to the adoption of the Lease ASUs, there have been no other material changes to the Company’s significant accounting policies as of and for the three months ended March 31, 2019, as compared to the significant accounting policies described in the Annual Report.

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Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of cumulative effect of changed made to balance sheet

The cumulative effect of changes made to the Company’s condensed consolidated January 1, 2019 balance sheet for the adoption of the Lease ASUs were as follows:

	Balance at	Adjustments		Balance at
	December 31,	Due to		January 1,
	2018	Lease ASUs		2019
	$	$		$
Assets:
Prepaid expenses and other current assets	81,942	(271	)	81,671
Land use right, net	45,058	(45,058	)	—
Operating lease right-of-use assets	—	71,036		71,036
Liabilities:
Accrued expenses and other payables	100,414	(888	)	99,526
Current portion of operating lease liabilities	—	8,684		8,684
Operating lease liabilities	—	18,762		18,762
Other long-term liabilities	38,931	(851	)	38,080

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of assets measured at fair value on a recurring basis

The following tables present the Company’s financial assets and liabilities measured and recorded at fair value on a recurring basis using the above input categories as of March 31, 2019 and December 31, 2018:

	Quoted Price
	in Active	Significant
	Market for	Other	Significant
	Identical	Observable	Unobservable
	Assets	Inputs	Inputs
As of March 31, 2019	(Level 1)	(Level 2)	(Level 3)
	$	$	$
Short-term investments (Note 5):
U.S. treasury securities	825,435	—	—
U.S. agency securities	23,732	—	—
Cash equivalents
U.S. treasury securities	124,856	—	—
Money market funds	59,884	—	—
Total	1,033,907	—	—

	Quoted Price
	in Active	Significant
	Market for	Other	Significant
	Identical	Observable	Unobservable
	Assets	Inputs	Inputs
As of December 31, 2018	(Level 1)	(Level 2)	(Level 3)
	$	$	$
Short-term investments (Note 5):
U.S. treasury securities	1,068,509	—	—
Cash equivalents
Money market funds	159,810	—	—
Total	1,228,319	—	—

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Research and Development Collaborative Arrangements (Tables)

3 Months Ended

Mar. 31, 2019

Disaggregation of Revenue [Line Items]

Schedule of total collaboration revenue recognized

The table below presents the Company’s net product sales for the three months ended March 31, 2019 and 2018.

	Three Months Ended
	March 31,
	2019		2018
	$		$
Product revenue – gross	58,536		23,485
Less: Rebates and sales returns	(1,115	)	(235	)
Product revenue – net	57,421		23,250

Collaboration

Disaggregation of Revenue [Line Items]

Schedule of total collaboration revenue recognized

The following table summarizes total collaboration revenue recognized for the three months ended March 31, 2019 and 2018:

	Three Months Ended
	March 31,
	2019	2018
	$	$
Reimbursement of research and development costs	18,174	7,555
Research and development service revenue	2,238	1,739
Total	20,412	9,294

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Business Combinations and Asset Acquisitions (Tables)

3 Months Ended

Mar. 31, 2019

Business Combinations [Abstract]

Purchase price allocation

The total cost of the transaction of $38,865, which includes transaction costs of $211, was allocated based on the relative fair values of the net assets acquired, as follows:

	Amount
Land use right	$	33,783
Building	15,874
Deferred tax liability	(11,221		)
Other	429
Total cost	38,865

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Restricted Cash and Short-term Investments (Tables)

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Schedule of short-term investments

Short-term investments as of March 31, 2019 consisted of the following available-for-sale debt securities:

		Gross	Gross	Fair Value
	Amortized	Unrealized	Unrealized	(Net Carrying
	Cost	Gains	Losses	Amount)
	$	$	$	$
U.S. treasury securities	823,079	2,356	—	825,435
U.S. agency securities	23,665	67	—	23,732
Total	846,744	2,423	—	849,167

Short-term investments as of December 31, 2018 consisted of the following available-for-sale debt securities:

		Gross	Gross	Fair Value
	Amortized	Unrealized	Unrealized	(Net Carrying
	Cost	Gains	Losses	Amount)
	$	$	$	$
U.S. treasury securities	1,066,770	1,802	63	1,068,509
Total	1,066,770	1,802	63	1,068,509

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Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Schedule of components of property and equipment

Property, plant and equipment are recorded at cost and consisted of the following:

	As of
	March 31,		December 31,
	2019		2018
	$		$
Laboratory equipment	24,771		22,636
Leasehold improvements	19,466		18,048
Building	15,905		15,857
Manufacturing equipment	16,806		16,048
Office equipment	2,526		2,216
Electronic equipment	1,745		1,229
Computer software	1,331		1,262
Property, plant and equipment, at cost	82,550		77,296
Less accumulated depreciation	(23,267	)	(19,722	)
Construction in progress	138,523		99,487
Property, plant and equipment, net	197,806		157,061

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Leases (Tables)

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Components of Lease Expense

Other supplemental information related to leases is summarized below:    

	Three months ended
	March 31,
	2019
	$
Operating cash flows used in operating leases	2,994
ROU assets obtained in exchange for new operating lease liabilities	3,464

	As of
	March 31,
	2019
	$
Weighted-average remaining lease term (years)	3
Weighted-average discount rate	8.37	%

The components of lease expense were as follows:

	Three months ended
	March 31,
	2019
	$
Operating lease cost	3,393
Variable lease cost	297
Short-term lease cost	133
Total lease cost	3,823

Operating Lease Maturity Schedule

Maturities of operating lease liabilities are as follows (2):

	$
Nine months ending December 31, 2019	8,675
Year ending December 31, 2020	10,583
Year ending December 31, 2021	8,123
Year ending December 31, 2022	4,173
Year ending December 31, 2023	1,445
Thereafter	104
Total lease payments	33,103
Less imputed interest	(4,107	)
Present value of lease liabilities	28,996

(2) As of March 31, 2019, the Company has additional operating leases for office facilities that have not yet commenced of $5,858. These operating leases will commence during the fiscal year 2019 with lease terms of up to three years.

Supplemental Balance Sheet Information

Supplemental balance sheet information related to leases was as follows:

	As of
	March 31,
	2019
	$
Operating lease right-of-use assets	27,518
Land use rights, net	45,106
Total operating lease right-of-use assets	72,624
Current portion of operating lease liabilities	9,451
Operating lease liabilities	19,545
Total lease liabilities	28,996

Schedule of future minimum payments under non-cancelable operating leases

The Company adopted the Lease ASUs effective January 1, 2019 and did not restate prior periods. The undiscounted future minimum payments under non-cancelable operating leases as of December 31, 2018, prior to the adoption of the Lease ASUs was as follows:

	$
Year ending December 31:
2019	10,752
2020	9,972
2021	7,805
2022	3,923
2023 and thereafter	1,357
Total	33,809

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Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible assets outstanding

Intangible assets as of March 31, 2019 and December 31, 2018 are summarized as follows:

	As of
	March 31, 2019				December 31, 2018
	Gross				Gross
	carrying	Accumulated		Intangible	carrying	Accumulated		Intangible
	amount	amortization		assets, net	amount	amortization		assets, net
	$	$		$	$	$		$
Finite-lived intangible assets:
Product distribution rights	7,500	(1,187	)	6,313	7,500	(1,000	)	6,500
Trading license	816	(288	)	528	816	(144	)	672
Total finite-lived intangible assets	8,316	(1,475	)	6,841	8,316	(1,144	)	7,172

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Supplemental Balance Sheet Information (Tables)

3 Months Ended

Mar. 31, 2019

Balance Sheet Related Disclosures [Abstract]

Schedule of prepaid expenses and other current assets

Prepaid expenses and other current assets consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Prepaid research and development costs	66,817	58,673
Prepaid taxes	9,078	10,479
Interest receivable	2,580	3,096
Other	11,466	9,694
Total	89,941	81,942

Schedule of other non-current assets

Other non-current assets consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Prepayment of long-term assets	10,035	11,981
Prepayment of facility capacity expansion activities (1)	25,809	25,193
Prepaid VAT	19,768	14,671
Rental deposits and other	2,993	1,823
Total	58,605	53,668

(1) Represents a payment for a facility expansion under a commercial supply agreement. The payment will be credited back to the Company through credits on supply purchases over the life of the supply agreement.

Schedule of accrued expenses and other payables

Accrued expenses and other payables consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Compensation related	18,540	35,887
External research and development activities related	46,889	34,588
Commercial activities	9,437	10,433
Individual income tax and other taxes	8,626	8,030
Sales rebates and returns related	3,366	4,749
Professional fees and other	3,879	6,727
Total	90,737	100,414

Schedule of other long-term liabilities

Other long-term liabilities consist of the following:

	As of
	March 31,	December 31,
	2019	2018
	$	$
Deferred government grant income	38,776	37,851
Other	196	1,080
Total	38,972	38,931

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Product Revenue (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Schedule of net product sales

The table below presents the Company’s net product sales for the three months ended March 31, 2019 and 2018.

	Three Months Ended
	March 31,
	2019		2018
	$		$
Product revenue – gross	58,536		23,485
Less: Rebates and sales returns	(1,115	)	(235	)
Product revenue – net	57,421		23,250

Schedule of accrued sales rebates and returns

The following table presents the roll-forward of accrued sales rebates and returns for the three months ended March 31, 2019:

	Sales Rebates and Returns
	$
Balance as of December 31, 2018	4,749
Accrual	1,115
Payments	(2,498	)
Balance as of March 31, 2019	3,366

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Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of the calculation of basic and diluted net (loss) income per ordinary share

Loss per share was calculated as follows:

	Three Months Ended
	March 31,
	2019			2018
	(in thousands, except share and per share data)
Numerator:
Net loss attributable to BeiGene, Ltd.	$	(167,640	)	$	(104,596	)
Denominator:
Weighted average shares outstanding, basic and diluted	774,750,255			670,510,605
Net loss per share attributable to BeiGene, Ltd., basic and diluted	$	(0.22	)	$	(0.16	)

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Share-Based Compensation Expense (Tables)

3 Months Ended

Mar. 31, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of total compensation cost recognized

The following table summarizes total share-based compensation expense recognized for the three months ended March 31, 2019 and 2018:

	Three Months Ended
	March 31,
	2019	2018
	$	$
Research and development	15,771	12,052
Selling, general and administrative	10,621	5,344
Total	26,392	17,396

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Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Schedule of accumulated other comprehensive income

The movement of accumulated other comprehensive income was as follows:

			Unrealized
	Foreign Currency		Gains on
	Translation		Available-for-Sale
	Adjustments		Securities		Total
	$		$		$
Balance as of December 31, 2018	(212	)	1,738		1,526
Other comprehensive income before reclassifications	3,861		1,495		5,356
Amounts reclassified from accumulated other comprehensive income	—		(810	)	(810	)
Net-current period other comprehensive income	3,861		685		4,546
Balance as of March 31, 2019	3,649		2,423		6,072

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Segment and geographic information (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Schedule of net product revenues by geographic area

Total net revenues by geographic area are presented as follows:

	Three Months Ended
	March 31,
	2019	2018
	$	$
PRC	57,421	23,250
United States	13,268	6,041
Other	7,144	3,253
Total	77,833	32,544

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Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies - Narratives (Details) - USD ($) $ in Thousands	Aug. 08, 2018	Jan. 22, 2018	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Organization
Present value of lease liabilities			$ 28,996
Operating lease right-of-use assets			72,624	$ 71,036
Prepaid expenses and other current assets			89,941	81,671	$ 81,942
Land use right, net					$ 45,058
Land use rights, net
Organization
Operating lease right-of-use assets			$ 45,106
Land use rights, net | Manufacturing facility in Guangzhou
Organization
Lease term			48 years		36 years	50 years
Building
Organization
Operating lease right-of-use assets			$ 27,518
Lease term			5 years
ASU 2016-02
Organization
Present value of lease liabilities				27,446
Operating lease right-of-use assets				71,036
Deferred rent				(1,739)
Prepaid expenses and other current assets				(271)
Land use right, net				(45,058)
ASU 2016-02 | Non- land use rights
Organization
Operating lease right-of-use assets				$ 25,978
Follow-on public offering
Organization
Net proceeds	$ 869,709	$ 757,587

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Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies - Recent Accounting Pronouncements - Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Assets
Prepaid expenses and other current assets	$ 89,941	$ 81,671	$ 81,942
Land use right, net			45,058
Operating lease right-of-use assets	72,624	71,036
Liabilities:
Accrued expenses and other payables	90,737	99,526	100,414
Current portion of operating lease liabilities	9,451	8,684
Operating lease liabilities	19,545	18,762
Other long-term liabilities	$ 38,972	38,080	$ 38,931
ASU 2016-02
Assets
Prepaid expenses and other current assets		(271)
Land use right, net		(45,058)
Operating lease right-of-use assets		71,036
Liabilities:
Accrued expenses and other payables		(888)
Current portion of operating lease liabilities		8,684
Operating lease liabilities		18,762
Other long-term liabilities		$ (851)

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Fair Value Measurements (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
U.S. treasury securities
Assets:
Available-for-sale securities	$ 825,435,000	$ 1,068,509,000
U.S. agency securities
Assets:
Available-for-sale securities	23,732,000
Recurring basis
Liabilities:
Liabilities measured and recorded at fair value	0	0
Recurring basis | (Level 1)
Assets:
Total	1,033,907,000	1,228,319,000
Recurring basis | (Level 1) | Money market funds
Assets:
Cash equivalents	59,884,000	159,810,000
Recurring basis | (Level 1) | U.S. treasury securities
Assets:
Available-for-sale securities	825,435,000	1,068,509,000
Cash equivalents	124,856,000
Recurring basis | (Level 1) | U.S. agency securities
Assets:
Available-for-sale securities	23,732,000
Recurring basis | (Level 2)
Assets:
Total	0	0
Recurring basis | (Level 2) | Money market funds
Assets:
Cash equivalents	0	0
Recurring basis | (Level 2) | U.S. treasury securities
Assets:
Available-for-sale securities	0	0
Cash equivalents	0
Recurring basis | (Level 2) | U.S. agency securities
Assets:
Available-for-sale securities	0
Recurring basis | (Level 3)
Assets:
Total	0	0
Recurring basis | (Level 3) | Money market funds
Assets:
Cash equivalents	0	0
Recurring basis | (Level 3) | U.S. treasury securities
Assets:
Available-for-sale securities	0	$ 0
Cash equivalents	0
Recurring basis | (Level 3) | U.S. agency securities
Assets:
Available-for-sale securities	$ 0

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Research and Development Collaborative Arrangements - Tabular Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Collaboration
Revenues
Revenue	$ 20,412	$ 9,294
Reimbursement of research and development costs
Revenues
Revenue	18,174	7,555
Research and development service revenue
Revenues
Revenue	$ 2,238	$ 1,739

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Business Combinations and Asset Acquisitions - BeiGene Pharmaceuticals (Guangzhou) Co., Limited (Details) - BeiGene Guangzhou - BeiGene Pharmaceuticals (Guangzhou) Co., Limited $ in Thousands	Sep. 21, 2018 USD ($)
Business Acquisition
Voting interest acquired from asset acquisition (percent)	100.00%
Transaction costs	$ 59
Finite-lived intangible asset acquired	816
Deferred tax liability	204
Trading license
Business Acquisition
Payments to acquire intangible assets	$ 612

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Business Combinations and Asset Acquisitions - Beijing Innerway Bio-tech Co., Ltd (Details) - Beigene HK - Beijing Innerway Bio-tech Co., Ltd $ in Thousands	Oct. 04, 2018 USD ($)
Business Combination
Voting interest acquired from asset acquisition (percent)	100.00%
Cash paid to acquire business	$ 38,654
Transaction costs	211
Total cost	$ 38,865

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Business Combinations and Asset Acquisitions - Asset Acquisition (Details) - Beigene HK - Beijing Innerway Bio-tech Co., Ltd $ in Thousands	Oct. 04, 2018 USD ($)
Purchase Price Allocation
Land use right	$ 33,783
Building	15,874
Deferred tax liability	(11,221)
Other	429
Total cost	$ 38,865

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Restricted Cash and Short-term Investments - Restricted Cash (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Subsidiaries | BeiGene Guangzhou Biologics Manufacturing Co., Ltd. (BeiGene Guangzhou Factory)
Restricted Cash
Restricted cash	$ 23,891

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Restricted Cash and Short-term Investments - Tabular Disclosure (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Short-term investments
Short-term investments, amortized cost	$ 846,744	$ 1,066,770
Short-term investments, gross unrealized gains	2,423	1,802
Short-term investments, gross unrealized losses	0	63
Short-term investments	849,167	1,068,509
U.S. treasury securities
Short-term investments
Available-for-sale securities, amortized cost	823,079	1,066,770
Available-for-sale securities, gross unrealized gains	2,356	1,802
Available-for-sale securities. gross unrealized losses	0	63
Available-for-sale securities	825,435	$ 1,068,509
U.S. agency securities
Short-term investments
Available-for-sale securities, amortized cost	23,665
Available-for-sale securities, gross unrealized gains	67
Available-for-sale securities. gross unrealized losses	0
Available-for-sale securities	$ 23,732

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Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Inventories	$ 13,140	$ 16,242

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Property and Equipment - Tabular Disclosure (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Property and equipment
Property, plant and equipment, at cost	$ 82,550	$ 77,296
Less accumulated depreciation	(23,267)	(19,722)
Property, plant and equipment, net	197,806	157,061
Laboratory equipment
Property and equipment
Property, plant and equipment, at cost	24,771	22,636
Leasehold improvements
Property and equipment
Property, plant and equipment, at cost	19,466	18,048
Building
Property and equipment
Property, plant and equipment, at cost	15,905	15,857
Manufacturing equipment
Property and equipment
Property, plant and equipment, at cost	16,806	16,048
Office equipment
Property and equipment
Property, plant and equipment, at cost	2,526	2,216
Electronic equipment
Property and equipment
Property, plant and equipment, at cost	1,745	1,229
Computer software
Property and equipment
Property, plant and equipment, at cost	1,331	1,262
Construction in progress
Property and equipment
Property, plant and equipment, at cost	$ 138,523	$ 99,487

XML

Property and Equipment - Construction in Progress (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Property and equipment
Property, plant and equipment, at cost	$ 82,550	$ 77,296
Construction in progress
Property and equipment
Property, plant and equipment, at cost	$ 138,523	$ 99,487

XML

Property and Equipment - Depreciation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Property and equipment
Depreciation expense	$ 3,085	$ 1,984

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Manufacturing Facility in Guangzhou (Details) ¥ in Thousands, $ in Thousands					3 Months Ended
	May 04, 2017 CNY (¥)	Apr. 14, 2017 CNY (¥)	Apr. 13, 2017 CNY (¥)	Mar. 07, 2017 CNY (¥) asset	Mar. 31, 2019 USD ($)	Dec. 31, 2017	Dec. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)
Organization
Cash and cash equivalents | $					$ 764,492		$ 712,937	$ 490,634
Shareholder Loan | Convertible Debt | Investor
Organization
Face amount				¥ 900,000
Shareholder loan		¥ 900,000
BeiGene Biologics Co., Ltd. (BeiGene Biologics)
Organization
Ownership percentage immediately after transaction (as a percent)					95.00%
BeiGene (Hong Kong) Co., Limited.(“BeiGene HK”)
Organization
Cash capital contribution, agreed amount				¥ 200,000
Minimum number of biologics assets to be contributed | asset				1
Cash capital contribution	¥ 2,415		¥ 137,830
BeiGene (Hong Kong) Co., Limited.(“BeiGene HK”) | BeiGene Biologics Co., Ltd. (BeiGene Biologics)
Organization
Ownership percentage immediately after transaction (as a percent)				95.00%
BeiGene (Hong Kong) Co., Limited.(“BeiGene HK”) | BeiGene (Shanghai) Co., Ltd. (“BeiGene (Shanghai)”)
Organization
Ownership percentage immediately after transaction (as a percent)						95.00%
Ownership percentage immediately after transaction (as a percent)						100.00%
GET
Organization
Cash capital contribution, agreed amount				¥ 100,000
Capital contribution from noncontrolling interest		100,000
GET | BeiGene Biologics Co., Ltd. (BeiGene Biologics)
Organization
Ownership percentage immediately after transaction (as a percent)					5.00%
Minority interest in investment (as a percent)				5.00%
BeiGene Biologics Co., Ltd. (BeiGene Biologics)
Organization
Cash and cash equivalents | $					$ 143,320
Restricted cash | $					$ 23,891
BeiGene Biologics Co., Ltd. (BeiGene Biologics) | Shareholder Loan | Convertible Debt | Investor
Organization
Face amount				¥ 900,000
Shareholder loan		¥ 900,000

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Leases - Narratives (Details)	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Building
Lessee, Lease
Lease term	5 years
Land use rights, net | Manufacturing facility in Guangzhou
Lessee, Lease
Lease term	48 years	36 years	50 years
Land use rights, net | Office facility in Changping
Lessee, Lease
Lease term	35 years

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Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Leases [Abstract]
Operating lease cost	$ 3,393
Variable lease cost	297
Short-term lease cost	133
Total lease cost	$ 3,823
Operating lease expense		$ 1,653

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Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Lessee, Lease
Operating lease right-of-use assets	$ 72,624	$ 71,036
Current portion of operating lease liabilities	9,451	8,684
Operating lease liabilities	19,545	$ 18,762
Total lease liabilities	28,996
Operating lease right-of-use assets
Lessee, Lease
Operating lease right-of-use assets	27,518
Land use rights, net
Lessee, Lease
Operating lease right-of-use assets	$ 45,106

XML

Leases - Operating Lease Maturity Schedule (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Leases [Abstract]
Nine months ending December 31, 2019	$ 8,675
Year ending December 31, 2020	10,583
Year ending December 31, 2021	8,123
Year ending December 31, 2022	4,173
Year ending December 31, 2023	1,445
Thereafter	104
Total lease payments	33,103
Less imputed interest	(4,107)
Present value of lease liabilities	28,996
Operating leases for office facilities that have not yet commenced	$ 5,858
Operating leases for office facilities that have not yet commenced (term)	3 years

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Leases - Other Supplemental Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating cash flows used in operating leases	$ 2,994
ROU assets obtained in exchange for new operating lease liabilities	3 years
Weighted-average remaining lease term (years)	8.37%
Weighted-average discount rate	$ 3,464

XML

Leases - Schedule of Non-cancelable Lease Payments (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Leases [Abstract]
2019	$ 10,752
2020	9,972
2021	7,805
2022	3,923
2023 and thereafter	1,357
Total	$ 33,809

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Intangible Assets - Intangible Assets Outstanding (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Intangible assets
Gross carrying amount	$ 8,316	$ 8,316
Accumulated amortization	(1,475)	(1,144)
Intangible assets, net	6,841	7,172
Product distribution rights
Intangible assets
Gross carrying amount	7,500	7,500
Accumulated amortization	(1,187)	(1,000)
Intangible assets, net	6,313	6,500
Trading license
Intangible assets
Gross carrying amount	816	816
Accumulated amortization	(288)	(144)
Intangible assets, net	$ 528	$ 672

XML

Intangible Assets - Useful Life (Details)	3 Months Ended
	Mar. 31, 2019
Product distribution rights
Other intangible assets
Useful life	10 years

XML

Intangible Assets - Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Intangible assets
Amortization expense	$ 331	$ 188

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Intangible Assets - Expected Amortization Expense (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Expected amortization expense
Remainder of 2019	$ 995
2020	846
2021	750
2022	750
2023	750
2024 and thereafter	$ 2,750

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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income taxes
Income tax (expense) benefit	$ 519	$ (3,412)
Unrecognized tax benefits	2,559
Increase in uncertain tax position	$ 264
Minimum | China
Income taxes
Open tax year	2013
Minimum | Federal taxes
Income taxes
Open tax year	2015
Minimum | Various U.S and Non U.S Taxing Authorities
Income taxes
Open tax year	2010

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Supplemental Balance Sheet Information - Prepaid expenses and other current assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Prepaid expenses and other current assets:
Prepaid research and development costs	$ 66,817		$ 58,673
Prepaid taxes	9,078		10,479
Interest receivable	2,580		3,096
Other	11,466		9,694
Total	$ 89,941	$ 81,671	$ 81,942

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Supplemental Balance Sheet Information - Other non-current assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Other non-current assets:
Prepayment of long-term assets	$ 10,035	$ 11,981
Prepayment of facility capacity expansion activities	25,809	25,193
Prepaid VAT	19,768	14,671
Rental deposits and other	2,993	1,823
Total	$ 58,605	$ 53,668

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Supplemental Balance Sheet Information - Accrued expenses and other payables (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Accrued expenses and other payables
Compensation related	$ 18,540		$ 35,887
External research and development activities related	46,889		34,588
Commercial activities	9,437		10,433
Individual income tax and other taxes	8,626		8,030
Sales rebates and returns related	3,366		4,749
Professional fees and other	3,879		6,727
Total	$ 90,737	$ 99,526	$ 100,414

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Supplemental Balance Sheet Information - Other long-term liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Other long-term liabilities
Deferred government grant income	$ 38,776		$ 37,851
Other	196		1,080
Total	$ 38,972	$ 38,080	$ 38,931

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Long-term Bank Loans (Details)		1 Months Ended		3 Months Ended			12 Months Ended
	Apr. 04, 2018 CNY (¥)	Sep. 30, 2018 USD ($)	Sep. 30, 2018 CNY (¥)	Mar. 31, 2019 USD ($)	Mar. 31, 2019 CNY (¥)	Mar. 31, 2018 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2019 CNY (¥)	Mar. 31, 2019 CNY (¥)	Sep. 02, 2015 CNY (¥)
Long-term bank loan
Proceeds from long-term loan				$ 36,695,000		$ 0
Loans Payable | Long-term Bank Loan, September 2, 2015
Long-term bank loan
Face amount | ¥										¥ 120,000,000
Fixed annual interest rate (as a percent)										7.00%
Loan security				13,500,000			$ 13,500,000
Repayment of long-term loan		$ 8,736,000	¥ 60,000,000
Loan amount repayable on September 30, 2019				8,940,000			8,940,000		¥ 60,000,000
Loans Payable | Long Term Bank Loan April 4, 2018
Long-term bank loan
Face amount | ¥	¥ 580,000,000
Debt instrument term (in years)	9 years
Proceeds from long-term loan				$ 36,695,000	¥ 240,000,000		77,480,000	¥ 520,000,000
Interest rate (as a percent)				4.90%	4.90%
Unused long-term credit availability				$ 8,940,000			$ 8,940,000
Interest expense				941,000		331,000
Interest capitalized				$ 641,000		$ 0

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Shareholder Loan (Details) - Shareholder Loan - Investor - Convertible Debt ¥ in Thousands, $ in Thousands			3 Months Ended
	Apr. 14, 2017 CNY (¥)	Mar. 07, 2017 CNY (¥)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)
Shareholder Loan
Face amount | ¥		¥ 900,000
Shareholder loan | ¥	¥ 900,000
Shareholder loan interest rate (as a percent)		8.00%
Debt instrument term (in years)	72 months
Interest expense incurred due to a related party | $			$ 2,645	$ 3,280
Interest capitalized | $			$ 788	$ 815

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Product Revenue - Product Sales (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues
Product revenue – net	$ 77,833	$ 32,544
Product
Revenues
Product revenue – gross	58,536	23,485
Less: Rebates and sales returns	(1,115)	(235)
Product revenue – net	$ 57,421	$ 23,250

XML

Product Revenue - Accrued Sales Rebates and Returns (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Accrued Sales Rebates and Returns
December 31, 2018	$ 4,749
March 31, 2019	3,366
Product
Accrued Sales Rebates and Returns
December 31, 2018	4,749
Accrual	1,115
Payments	(2,498)
March 31, 2019	$ 3,366

XML

Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Numerator:
Net loss attributable to BeiGene, Ltd.	$ (167,640)	$ (104,596)
Denominator:
Weighted-average shares outstanding, basic and diluted (shares)	774,750,255	670,510,605
Net loss per share attributable to BeiGene, Ltd., basic and diluted (in dollars per share)	$ (0.22)	$ (0.16)

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Share-Based Compensation Expense - Share Options and Incentive Plan (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended
	Feb. 28, 2019	Jun. 06, 2018	Dec. 31, 2018	Mar. 31, 2019	Jan. 14, 2016
2016 Plan
Share-based compensation
Number of shares reserved and available for issuance (in shares)					65,029,595
Automatic annual increase in shares reserved and available for issuance as a percentage to outstanding number of shares (as a percent)				5.00%
Increase in ordinary shares authorized (in shares)			38,553,159
2016 Plan | Share options
Share-based compensation
Granted (in shares)				590,967
Number of options outstanding (in shares)				80,307,682
2016 Plan | Restricted Share Units (RSUs)
Share-based compensation
Granted (in shares)				2,266,550
Number of options outstanding (in shares)				12,078,638
2011 Plan
Share-based compensation
Shares cancelled or forfeited (in shares)				5,144,371
2018 Plan
Share-based compensation
Number of shares reserved and available for issuance (in shares)		12,000,000
2018 Plan | Share options
Share-based compensation
Number of options outstanding (in shares)				79,404
2018 Plan | Restricted Share Units (RSUs)
Share-based compensation
Number of options outstanding (in shares)				3,542,773
ESPP
Share-based compensation
Number of shares reserved and available for issuance (in shares)		3,500,000	7,355,315
Increase in ordinary shares authorized (in shares)			3,855,315
Discount on purchase price of common stock (as a percent)			15.00%
Maximum percentage of eligible earnings as after-tax withholdings to purchase ordinary shares (as a percent)		10.00%
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	154,505
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period, Value	$ 1,385
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period American Depository Shares Exercise Price	$ 116.49
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Exercise Price	8.96
Share price, ADS (in dollars per share)	137.05
Share price (in dollars per share)	$ 10.54

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Share-Based Compensation Expense - Expense Recognized (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based compensation
Compensation expense	$ 26,392	$ 17,396
Research and development
Share-based compensation
Compensation expense	15,771	12,052
Selling, general and administrative
Share-based compensation
Compensation expense	$ 10,621	$ 5,344

XML

Accumulated Other Comprehensive Income (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Movement in accumulated other comprehensive loss
Balance at the beginning of period	$ 1,753,647
Balance at the end of period	1,622,679
Accumulated Other Comprehensive Income
Movement in accumulated other comprehensive loss
Balance at the beginning of period	1,526
Other comprehensive income before reclassifications	5,356
Amounts reclassified from accumulated other comprehensive income	(810)
Other comprehensive income, net of tax of nil	4,546
Balance at the end of period	6,072
Foreign Currency Translation Adjustments
Movement in accumulated other comprehensive loss
Balance at the beginning of period	(212)
Other comprehensive income before reclassifications	3,861
Amounts reclassified from accumulated other comprehensive income	0
Other comprehensive income, net of tax of nil	3,861
Balance at the end of period	3,649
Unrealized Gain on available-for-Sale Securities
Movement in accumulated other comprehensive loss
Balance at the beginning of period	1,738
Other comprehensive income before reclassifications	1,495
Amounts reclassified from accumulated other comprehensive income	(810)
Other comprehensive income, net of tax of nil	685
Balance at the end of period	$ 2,423

XML

Shareholders’ Equity - Follow-on public offerings (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Aug. 08, 2018	Jan. 22, 2018	Mar. 31, 2018
Follow-on public offering
Shareholders' equity
Share price (in dollars per share)		$ 7.77
Share price, ADS (in dollars per share)		$ 101.00
Shares issued (in shares)		96,534,750
Net proceeds	$ 869,709	$ 757,587
Number of new stock issued during the period, American Depository Shares.		7,425,750
Follow-on public offering | Ordinary Shares
Shareholders' equity
Share price (in dollars per share)	$ 13.76
Share price, ADS (in dollars per share)	$ 178.90
Shares issued (in shares)	65,600,000		102,970,400
Net proceeds	$ 869,709
Over-Allotment Option
Shareholders' equity
Shares issued (in shares)		6,435,650
Number of new stock issued during the period, American Depository Shares.		495,050

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Restricted Net Assets (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Segment Reporting Information
Minimum required statutory reserve of annual after-tax profit (as a percent)	10.00%
Required statutory reserve as a percentage of registered capital (as a percent)	50.00%
Appropriation to statutory reserves	$ 0		$ 0
China
Segment Reporting Information
Restricted net assets	$ 105,688,000	$ 93,281,000

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Commitments and Contingencies - Purchase and Capital Commitments (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Inventories
Purchase and Capital commitments
Purchase commitments	$ 56,135
Capital Addition Purchase Commitments
Purchase and Capital commitments
Purchase commitments	$ 26,647

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Segment and geographic information - General Information (Details)	3 Months Ended
	Mar. 31, 2018 segment
Segment information
Number of operating segments	1

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Segment and geographic information - Tabular Disclosure (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net product revenues by geographic area
Revenues	$ 77,833	$ 32,544
PRC
Net product revenues by geographic area
Revenues	57,421	23,250
United States
Net product revenues by geographic area
Revenues	13,268	6,041
Other
Net product revenues by geographic area
Revenues	$ 7,144	$ 3,253

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Subsequent Event (Details) $ in Thousands	Apr. 09, 2019 USD ($)
Subsequent Event | BioAtla LLC
Subsequent Event
Upfront payments for collaboration	$ 20,000

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Label	Element	Value
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	$ 681,940,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(2,291,000)
Parent [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	667,143,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(2,666,000)
Common Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	$ 59,000
Common Stock, Shares, Outstanding	us-gaap_CommonStockSharesOutstanding	592,072,330
Retained Earnings [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	$ (333,446,000)
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(2,929,000)
Additional Paid-in Capital [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	1,000,747,000
Noncontrolling Interest [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	14,797,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	375,000
AOCI Attributable to Parent [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	(217,000)
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 263,000