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Zai Lab (NASDAQ: ZLAB) Q1 2026 revenue slips as R&D and ADC pipeline advance

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8-K

Rhea-AI Filing Summary

Zai Lab Limited reported first-quarter 2026 total revenue of $99.6 million, down 6% year over year, as weaker oncology sales offset growth in newer products. Net product revenue was $95.6 million, a 10% decline, mainly from lower ZEJULA and VYVGART sales.

ZEJULA revenue fell to $30.0 million from $49.5 million due to volume-based procurement for a competing generic, while VYVGART slipped to $17.6 million after a pricing adjustment tied to NRDL renewal. XACDURO and NUZYRA grew to $8.6 million and $16.3 million, respectively.

Research and development expenses rose to $65.6 million and SG&A to $65.1 million, leading to a GAAP operating loss of $69.4 million and net loss of $51.0 million, or $0.05 per ordinary share. Zai Lab ended March 31, 2026 with $761.3 million in cash, equivalents, short-term investments, and current restricted cash.

The company highlighted standout intracranial response data for its DLL3-targeting ADC zocilurtatug pelitecan in small cell lung cancer and epNECs, new collaborations with Amgen and Boehringer Ingelheim, advancing atopic dermatitis candidate ZL-1503, and positive Phase 3 data from partners’ programs povetacicept in IgA nephropathy and elegrobart in thyroid eye disease.

Positive

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Negative

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Insights

Revenue fell modestly and losses widened as Zai Lab increased R&D while advancing a broad oncology and immunology pipeline.

Zai Lab generated Q1 2026 revenue of $99.6M, down 6% year over year, with product revenue declining 10%. The drag came mainly from ZEJULA, where sales dropped from $49.5M to $30.0M after volume-based procurement for a generic rival, and a pricing reset on VYVGART linked to NRDL renewal.

At the same time, newer anti-infective brands XACDURO and NUZYRA posted strong growth, while R&D spending rose to $65.6M and SG&A to $65.1M. That lifted GAAP operating loss to $69.4M and net loss to $51.0M, though the company retained a sizable liquidity position of $761.3M in cash, equivalents, short-term investments, and current restricted cash as of March 31, 2026.

Strategically, Zai Lab emphasized promising data for its DLL3-targeting ADC zocilurtatug pelitecan, including a 62.5% confirmed intracranial response rate at the 1.6 mg/kg dose in SCLC patients with brain metastases, and a 38.2% response rate in epNECs. New collaborations with Amgen and Boehringer Ingelheim, plus progress on ZL-1503 and partnered assets like povetacicept and elegrobart, support a long-term growth narrative while near-term earnings remain pressured.

Item 2.02 Results of Operations and Financial Condition Financial
Disclosure of earnings results, typically an earnings press release or preliminary financials.
Item 9.01 Financial Statements and Exhibits Exhibits
Financial statements, pro forma financial information, and exhibit attachments filed with this report.
Total revenue $99.6M Q1 2026, down 6% year over year
Product revenue $95.6M Q1 2026, 10% decline; 12% decline at CER
ZEJULA revenue $30.0M Q1 2026 vs $49.5M in Q1 2025
XACDURO revenue $8.6M Q1 2026 vs $1.1M in Q1 2025
Net loss $51.0M Q1 2026; loss per ordinary share $0.05
Cash and equivalents $761.3M Cash, short-term investments and current restricted cash as of March 31, 2026
Operating loss (GAAP) $69.4M Q1 2026; adjusted operating loss $51.9M
Zoci intracranial ORR 62.5% Confirmed intracranial objective response rate at 1.6 mg/kg in SCLC with brain metastases
objective response rate medical
"a 62.5% confirmed intracranial ORR in SCLC patients with brain metastases"
The objective response rate (ORR) is the percentage of patients in a clinical trial whose tumors measurably shrink or disappear according to preset rules. Investors use it as a quick, objective signal of a drug’s ability to produce a clear treatment effect—like counting how many plants visibly respond after applying a new fertilizer—and higher ORR can improve odds of regulatory approval, commercial success, and company valuation.
volume-based procurement regulatory
"Sales declined due to a shift in hospital utilization patterns following volume-based procurement for generic olaparib."
NRDL regulatory
"Sales declined primarily due to a pricing adjustment related to NRDL renewal."
A national reimbursement drug list is an official roster of medicines that a country’s public health insurance will pay for, either fully or partially. For investors, inclusion means a drug can reach many more patients at lower out‑of‑pocket cost, often boosting sales and predictability—think of it as a product being accepted by a large wholesale buyer, which can make revenue more reliable and impact a company’s valuation.
non-GAAP financial
"adjusted to exclude certain non-cash expenses including depreciation, amortization, and share-based compensation, which we refer to as “profitability.” These adjusted growth rates and adjusted loss from operations are non-GAAP measures."
Non-GAAP refers to financial measures that companies use to show their earnings or performance without including certain expenses or income that are often added back to give a different picture. It matters because it can make a company's results look better or more favorable, but it may also hide important costs, so investors need to look at both GAAP (official rules) and non-GAAP numbers to get a full understanding.
Tumor Treating Fields medical
"Tumor Treating Fields (TTFields) in locally advanced pancreatic cancer"
Tumor treating fields are a medical therapy that uses low‑intensity, alternating electric fields applied through pads on the skin to interfere with cancer cells as they try to divide, slowing or stopping tumor growth. Investors pay attention because the therapy’s clinical results, regulatory approvals, reimbursement and device sales directly influence a company’s revenue outlook; think of it like a new tool in a toolbox whose market adoption and proof it works determine its commercial value.
Total revenue $99.6M -6% YoY
Product revenue, net $95.6M -10% YoY; -12% at CER
Loss from operations (GAAP) $69.4M +23% YoY
Adjusted loss from operations (non-GAAP) $51.9M vs $37.1M in Q1 2025
Net loss $51.0M vs $48.4M in Q1 2025
false000170429200017042922026-05-072026-05-070001704292dei:AdrMember2026-05-072026-05-070001704292us-gaap:CommonStockMember2026-05-072026-05-07

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
________________________
FORM 8-K
________________________
CURRENT REPORT
Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): May 7, 2026
________________________
ZAI LAB LIMITED
(Exact name of registrant as specified in its charter)
________________________
Cayman Islands001-3820598-1144595
(State or other jurisdiction of
incorporation)
(Commission
File Number)
(I.R.S. Employer
Identification No.)
899 Halei Road
Building B, Pudong
Shanghai, China
201203
314 Main Street
4th Floor, Suite 100
Cambridge, MA, USA
02142
(Address of principal executive offices)(Zip Code)
+86 21 6163 2588
+1 857 706 2604
(Registrant’s Telephone Number, Including Area Code)
Not Applicable
(Former name or former address, if changed since last report)
________________________
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
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 10 Ordinary Shares, par value $0.000006 per shareZLABThe Nasdaq Global Market
Ordinary Shares, par value $0.000006 per share*9688The Stock Exchange of Hong Kong Limited
*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
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
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. ☐



Item 2.02 Results of Operations and Financial Condition.
On May 7, 2026, Zai Lab Limited issued a press release announcing its financial results for the first quarter of 2026. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference.
The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits
Exhibit No.Description
99.1
Press Release issued by Zai Lab Limited on May 7, 2026
104The cover page of this report is formatted in Inline XBRL



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 hereunto duly authorized.
ZAI LAB LIMITED
By:/s/ Yajing Chen
Yajing Chen
Chief Financial Officer
Date: May 7, 2026



Exhibit 99.1
image_1.jpg

Zai Lab Announces First Quarter 2026
Financial Results and Recent Corporate Updates

Total revenues of $99.6 million for the first quarter of 2026, reflecting anticipated first-quarter dynamics, including certain competitive impacts for ZEJULA and pricing adjustment related to NRDL renewal for VYVGART

Zocilurtatug pelitecan (zoci) delivered standout data at AACR 2026, with a 62.5% confirmed intracranial ORR in SCLC patients with brain metastases, and clinically meaningful activity (38.2% confirmed ORR) across epNECs; registrational DLLEVATE trial ongoing with enrollment expected to complete in the first half of 2027

Collaborations with Amgen and Boehringer Ingelheim to evaluate zoci in combination with tarlatamab in SCLC and obrixtamig in SCLC and other NECs, positioning zoci as a potential backbone therapy

ZL-1503 (IL-13/IL-31Rα) demonstrated rapid, durable dual-pathway activity in preclinical data presented at IMMUNOLOGY2026, supporting less frequent dosing and broad potential across atopic diseases, including asthma; Phase 1/1b study underway with initial data expected in 2026

KarXT launch preparations are underway and TIVDAK remains under regulatory review; positive Phase 3 readouts for povetacicept in IgAN and elegrobart in TED providing additional growth opportunities for our regional business


Conference call and webcast today, May 7, 2026, at 8:00 a.m. ET (8:00 p.m. HKT)

SHANGHAI & CAMBRIDGE, Mass., May 7, 2026 -- Zai Lab Limited (NASDAQ: ZLAB; HKEX: 9688) today announced financial results for the first quarter of 2026, along with recent product highlights and corporate updates.

“We continue to accelerate the development of our global pipeline, with numerous clinical trials underway across oncology and immunology,” said Dr. Samantha Du, Founder, Chairperson and Chief Executive Officer of Zai Lab. “During the quarter, we made strong progress advancing zoci, with AACR data reinforcing its differentiated profile in both SCLC and epNECs, collaborations with Amgen and Boehringer Ingelheim to evaluate zoci as a potential backbone therapy, and rapid enrollment in the registrational DLLEVATE study, which is on track to be fully enrolled in the first half of 2027. We also continue to advance our growing portfolio of global clinical programs, including ZL-1503 (IL-13/IL-31Rα) for atopic dermatitis. This reflects the strength of our R&D engine, which is designed to scale and deliver a pipeline of differentiated new products. At the same time, our commercially profitable regional business provides a stable foundation, with several near-term opportunities expected to support future growth.”

“We are deepening our presence in key markets to capitalize on underlying demand for VYVGART and are expanding our regional footprint as we prepare for the launch of KarXT in China in the second quarter,” said Josh Smiley, President and Chief Operating Officer of Zai Lab. “Supported by national guidelines and an addressable population of ~8 million schizophrenia patients, KarXT’s launch positions us to bring the first novel therapy in decades to this critical market, with potential NRDL inclusion next year. In addition, we anticipate a potential regulatory approval for TIVDAK this year, and with positive Phase 3 readouts for povetacicept and elegrobart, we have additional opportunities for future growth. Across all efforts, we remain focused on driving consistent execution throughout our commercial portfolio.”


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First Quarter 2026 Financial Results

Total revenue was $99.6 million in the first quarter of 2026, compared to $106.5 million for the same period in 2025, representing a decrease of 6% y-o-y. Product revenue, net was $95.6 million in the first quarter of 2026, compared to $105.7 million for the same period in 2025, representing a 10% y-o-y decrease, 12% y-o-y decrease at constant exchange rate (CER). This decrease was primarily driven by decreased sales for ZEJULA, partially offset by increased sales for XACDURO and NUZYRA:

ZEJULA was $30.0 million in the first quarter of 2026, compared to $49.5 million for the same period in 2025. Sales declined due to a shift in hospital utilization patterns following volume-based procurement for generic olaparib.

VYVGART was $17.6 million in the first quarter of 2026, compared to $18.1 million for the same period in 2025. Sales declined primarily due to a pricing adjustment related to NRDL renewal.

XACDURO, was $8.6 million in the first quarter of 2026, compared to $1.1 million for the same period in 2025. Growth was driven by strong patient demand and expanding hospital adoption but was partially constrained by supply limitations.

NUZYRA was $16.3 million in the first quarter of 2026, compared to $15.1 million for the same period in 2025. This growth was supported by increased market coverage and penetration.

Research and Development (R&D) expenses were $65.6 million in the first quarter of 2026, compared to $60.7 million for the same period in 2025. This increase was primarily due to increased clinical trial-related expenses and licensing fees.

Selling, General and Administrative (SG&A) expenses were $65.1 million in the first quarter of 2026, compared to $63.4 million for the same period in 2025. This increase was primarily driven by higher general selling expenses.

Loss from operations was $69.4 million in the first quarter of 2026, $51.9 million when adjusted to exclude certain non-cash expenses including depreciation, amortization, and share-based compensation. A reconciliation of loss from operations (GAAP) to adjusted loss from operations (non-GAAP) is included at the end of this release.

Net loss was $51.0 million in the first quarter of 2026, or a loss per ordinary share attributable to stockholders of $0.05 (or loss per American Depositary Share (ADS) of $0.46), compared to a net loss of $48.4 million for the same period in 2025, or a loss per ordinary share of $0.04 (or loss per ADS of $0.45). These increases in net loss were primarily due to lower product revenue and higher research and development expenses, partially offset by foreign currency gains.

Cash and cash equivalents, short-term investments, and current restricted cash totaled $761.3 million as of March 31, 2026, compared to $789.6 million as of December 31, 2025.


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Recent Corporate Updates

In April 2026, we appointed Yizhe Wang, Ph.D., as Operating Partner, to strengthen Zai Lab’s commercial capabilities and execution. Dr. Wang brings extensive experience in global oncology and immunology commercial operations, having led commercial teams across China, the U.S., and the U.K. at GSK and Eli Lilly.

Recent Pipeline Highlights

Below are key product candidate updates since our last earnings release:

Oncology Pipeline

Zocilurtatug Pelitecan (zoci, DLL3-Targeting ADC) (formerly ZL-1310):

In April 2026, Zai Lab presented compelling clinical data at the American Association for Cancer Research (AACR) Annual Meeting 2026 demonstrating that zoci delivers rapid and robust intracranial responses in patients with previously treated extensive stage small cell lung cancer (ES-SCLC) and brain metastases as measured by blinded independent assessment using mRANO-BM criteria, as well as promising data in patients with extrapulmonary neuroendocrine carcinomas (epNECs).
SCLC with Brain Metastases: Zoci showed a 53.7% confirmed intracranial objective response rate (iORR) with 62.5% (10/16) at the 1.6 mg/kg dose, including complete responses. Notably, responses were observed in patients without prior brain radiotherapy (9/15, 60%), highlighting the net drug effect on the intracranial lesions. Zoci was well tolerated, with Grade ≥3 treatment-related adverse events (TRAEs) in 19.9% (27/136) of the overall population and in 16.4% (9/55) of patients who received 1.6mg/kg.
epNECs: Encouraging activity was observed with a 38.2% confirmed objective response rate across epNEC tumors of different primary origins. The safety profile in epNEC was consistent with that previously observed in SCLC with Grade ≥3 TRAEs in 15.2% of patients in Phase 1b.

In April 2026, Zai Lab announced a global clinical trial collaboration with Amgen to evaluate zoci in combination with Amgen’s IMDELLTRA® (tarlatamab-dlle), a DLL3/CD3 bispecific T-cell engager (TCE), for ES-SCLC and a clinical collaboration with Boehringer Ingelheim to evaluate zoci in combination with obrixtamig, a DLL3/CD3 bispecific TCE, for SCLC and other NECs.

Immunology, Neuroscience, and Infectious Disease Pipeline

ZL-1503 (IL-13/IL-31Rα): In April 2026, Zai Lab announced new data from a preclinical study of ZL-1503, demonstrating that the company’s internally developed IL-13/IL-31Rα bispecific antibody may lead to sustained suppression of intense pruritus (itch) and inflammation caused by atopic diseases. The findings reinforce the potential of ZL-1503 to be a first-in-class treatment option for moderate-to-severe atopic dermatitis and other IL-13 and IL-31-driven diseases. A global Phase 1/1b study is ongoing and Zai Lab expects to report the first-in-human data from the global Phase 1 portion in the second half of 2026.

Povetacicept (APRIL/BAFF):

IgA nephropathy (IgAN): In March 2026, Zai Lab partner Vertex announced positive data from a pre-specified Week 36 interim analysis of the global Phase 3 RAINIER trial of pove in IgA nephropathy (IgAN). The trial met its primary objective, with povetacicept-treated patients achieving a 52.0% reduction from baseline in 24-hour urine protein to creatinine ratio (UPCR), representing a statistically significant and clinically meaningful 49.8% UPCR reduction versus placebo (p<0.0001). Povetacicept was generally safe and well tolerated. Zai Lab participated in the global Phase 3 study in Greater China.

Primary membranous nephropathy (pMN): Zai Lab partner Vertex has completed enrollment in the Phase 2 portion of the global pivotal Phase 2/3 OLYMPUS study and has initiated the Phase 3 portion. Zai Lab participated in the global study in Greater China.

Elegrobart (anti-IGF-1R, subcutaneous): Zai Lab partner Viridian Therapeutics announced positive topline data in both REVEAL-1 and REVEAL-2, elegrobart’s two pivotal phase 3 clinical trials for active and chronic TED, respectively. Elegrobart was generally well tolerated across both studies. Zai Lab holds an exclusive license from Zenas




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BioPharma to develop and commercialize elegrobart in Greater China and is currently conducting a Phase 3 bridging study in the region.

REVEAL-1 in active TED: met its primary endpoint with a highly statistically significant treatment effect. Both elegrobart Q4W and Q8W treatment arms showed rapid onset of treatment effect and achieved clinically meaningful 54% and 63% proptosis responder rates, respectively, versus 18% placebo at week 24. The Q4W treatment arm additionally provided meaningful diplopia benefit to patients with active TED.

REVEAL-2 in chronic TED: met its primary endpoint with a highly statistically significant treatment effect. Both elegrobart Q4W and Q8W treatment arms achieved statistically significant and clinically meaningful 50% and 54% proptosis responder rates, respectively, versus 15% placebo at week 24. The Q4W treatment arm additionally provided meaningful diplopia benefit to patients with chronic TED.


Anticipated Major Milestones in 2026

Expected Clinical Developments and Data Readouts

Global Pipeline

Zocilurtatug Pelitecan (zoci, DLL3-Targeting ADC) (formerly ZL-1310)

First-Line ES-SCLC: Zai Lab to provide data readout from the Phase 1 study evaluating zoci combination therapy (with atezolizumab and/or chemotherapy) in the second half of 2026 and advance zoci into a registrational study in 2026 based on emerging data.

Extrapulmonary NECs: Zai Lab to complete the enrollment for the global Phase 2 portion of the ongoing Phase 1b/2 study evaluating zoci in patients with selected solid tumors and advance into registrational development in 2026.

ZL-1503 (IL-13/IL-31Rα)

Zai Lab to provide the first-in-human data readout from the global Phase 1/1b study in 2026.

Regional Pipeline

Upcoming Potential NMPA Approvals

TIVDAK (Tisotumab Vedotin, Tissue Factor ADC) in recurrent or metastatic cervical cancer following progression on or after chemotherapy

Tumor Treating Fields (TTFields) in locally advanced pancreatic cancer

Expected Data Readouts

Efgartigimod (FcRn)

Myositis: Zai Lab partner argenx to provide topline results from the global Phase 2/3 ALKIVIA study evaluating autoimmune inflammatory myopathies (AIM or myositis) in the third quarter of 2026. Zai Lab participated in the study in Greater China.

Elegrobart (Anti-IGF-1R, subcutaneous)

Zai Lab to complete the enrollment for the Phase 3 registrational study in China in the third quarter of 2026.


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Conference Call and Webcast Information

Zai Lab will host a live conference call and webcast today, May 7, 2026, at 8:00 a.m. ET (8:00 p.m. HKT). Listeners may access the live webcast by visiting the Company’s website at http://ir.zailaboratory.com. Participants must register in advance of the conference call.

Details are as follows:

Registration link for webcast (preferred): https://edge.media-server.com/mmc/p/s7q4ox5h
Registration link for dial-in: https://register-conf.media-server.com/register/BI802954894429400baf012f775762af29

All participants must use the link provided above to complete the online registration process in advance of the conference call. Dial-in details will be in the confirmation email which the participant will receive upon registering.

A replay will be available shortly after the call and can be accessed by visiting the Company’s website.

About Zai Lab

Zai Lab Limited (NASDAQ: ZLAB; HKEX: 9688) is an innovative, research-based, commercial-stage biopharmaceutical company based in China and the United States. We are focused on discovering, developing, and commercializing innovative products that address medical conditions with significant unmet needs in the areas of oncology, immunology, neuroscience, and infectious disease. Our goal is to leverage our competencies and resources to positively impact human health.

For additional information about Zai Lab, please visit www.zailaboratory.com or follow us at https://x.com/ZaiLab_Global.

Non-GAAP Measures

In addition to results presented in accordance with GAAP, we disclose growth rates that have been adjusted to exclude the impact of changes due to the translation of foreign currencies into U.S. dollars. We have also presented a measure of adjusted loss from operations that adjusts GAAP loss from operations to exclude the impact of certain non-cash expenses including depreciation, amortization, and share-based compensation, which we refer to as “profitability.” These adjusted growth rates and adjusted loss from operations are non-GAAP measures. We believe that these non-GAAP measures are important for an understanding of the performance of our business operations and financial results and provide investors with an additional perspective on operational trends and greater transparency into our historical and projected operating performance. Although we believe the non-GAAP financial measures enhance investors’ understanding of our business and performance, these non-GAAP financial measures should not be considered an exclusive alternative to accompanying GAAP financial measures.

Zai Lab Forward-Looking Statements

This press release contains certain forward-looking statements, including statements relating to our strategy and plans; potential of and expectations for our business, commercial products, and pipeline programs; our goals, objectives, and priorities and our expectations under our growth strategy (including our expectations regarding our commercial products and launches, clinical stage products, revenue growth, profitability, and cash flow); clinical development programs and related clinical trials; clinical trial data, data readouts, and presentations; risks and uncertainties associated with drug development and commercialization; regulatory discussions, submissions, filings, and approvals and the timing thereof; the potential benefits, safety, and efficacy of our products and product candidates and those of our collaboration partners; the anticipated benefits and potential of investments, collaborations, and business development activities; our profitability and timeline to profitability; our future financial and operating results; and financial guidance, including with respect to our capital allocation and investment strategy and our expected path to profitability. All statements, other than statements of historical fact, included in this press release are forward-looking statements, and can be identified by words such as “aim,” “anticipate,” “believe,” “could,” “estimate,” “expect,” “forecast,” “goal,” “intend,” “may,” “plan,” “poised,” “positioned,” “possible,” “potential,” “will,” “would,” and other similar expressions. Such statements constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are not guarantees or assurances of future performance. Forward-looking statements are based on our expectations and assumptions as of the date of this press release and are subject to inherent uncertainties, risks, and changes in circumstances that may differ materially from those contemplated by the forward-looking statements. We may not actually achieve the plans, carry out the intentions, or meet the expectations or projections disclosed in our forward-looking statements, and you should not place undue reliance on these forward-looking statements. Actual results may differ materially from those indicated by such forward-looking statements as a result of various important factors, including but not limited to (1) our ability to successfully commercialize




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and generate revenue from our approved products; (2) our ability to obtain funding for our operations and business initiatives; (3) the results of our clinical and pre-clinical development of our product candidates; (4) the content and timing of decisions made by the relevant regulatory authorities regarding regulatory approvals of our product candidates; (5) risks related to doing business in China; and (6) other factors identified in our most recent annual and quarterly reports and in other reports we have filed with the U.S. Securities and Exchange Commission (SEC). We anticipate that subsequent events and developments will cause our expectations and assumptions to change, and we undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as may be required by law. These forward-looking statements should not be relied upon as representing our views as of any date subsequent to the date of this press release.

Our SEC filings can be found on our website at www.zailaboratory.com and on the SEC’s website at www.SEC.gov.

For more information, please contact:

Investor Relations:
Christine Chiou / Cyan Liu
+1 (917) 886-6929 / +86 195 3130 8895
christine.chiou1@zailaboratory.com / cyan.liu@zailaboratory.com

Media:
Shaun Maccoun / Xiaoyu Chen
+1 (415) 317-7255 / +86 185 0015 5011
shaun.maccoun@zailaboratory.com / xiaoyu.chen@zailaboratory.com

image_1.jpg


Zai Lab Limited


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Zai Lab Limited
Unaudited Condensed Consolidated Balance Sheets
(in thousands of U.S. dollars ($), except for number of shares and per share data)
March 31,
2026
December 31,
2025
Assets
Current assets
Cash and cash equivalents651,316 679,573 
Restricted cash, current100,000 100,000 
Short-term investments10,000 10,000 
Accounts receivable (net of allowance for credit losses of $16 and $31 as of March 31, 2026 and December 31, 2025, respectively)
54,069 106,116 
Notes receivable7,929 12,169 
Inventories, net85,961 74,745 
Prepayments and other current assets35,454 36,683 
Total current assets944,729 1,019,286 
Restricted cash, non-current1,117 1,116 
Property and equipment, net47,067 47,389 
Operating lease right-of-use assets17,585 19,152 
Land use rights, net2,868 2,853 
Intangible assets, net75,759 76,144 
Deferred tax assets3,444 3,390 
Other non-current assets3,168 3,054 
Total assets1,095,737 1,172,384 
Liabilities and shareholders’ equity
Current liabilities
Accounts payable126,169 141,608 
Current operating lease liabilities5,983 6,344 
Short-term debt213,819 204,530 
Other current liabilities47,011 63,684 
Total current liabilities392,982 416,166 
Deferred income28,627 27,333 
Non-current operating lease liabilities12,107 13,385 
Other non-current liabilities40 — 
Total liabilities433,756 456,884 
Commitments and contingencies
Shareholders’ equity
Ordinary shares (par value of $0.000006 per share; 5,000,000,000 shares authorized; 1,118,835,190 and 1,113,822,550 shares issued as of March 31, 2026 and December 31, 2025, respectively; 1,110,232,620 and 1,106,389,340 shares outstanding as of March 31, 2026 and December 31, 2025, respectively)
Additional paid-in capital3,357,826 3,343,469 
Accumulated deficit(2,679,636)(2,628,620)
Accumulated other comprehensive income15,105 29,697 
Treasury Stock (at cost, 8,602,570 and 7,433,210 shares as of March 31, 2026 and December 31, 2025, respectively)
(31,321)(29,053)
Total shareholders’ equity661,981 715,500 
Total liabilities and shareholders’ equity1,095,737 1,172,384 







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Zai Lab Limited
Unaudited Condensed Consolidated Statements of Operations
(in thousands of $, except for number of shares and per share data)
Three Months Ended March 31,
20262025
Revenues
Product revenue, net95,556 105,650 
Collaboration revenue4,055 837 
Total revenues99,611 106,487 
Expenses
Cost of product revenue(38,315)(38,452)
Cost of collaboration revenue(20)(195)
Research and development(65,591)(60,729)
Selling, general, and administrative(65,070)(63,422)
Loss from operations(69,385)(56,311)
Interest income6,447 8,606 
Interest expenses(1,637)(1,187)
Foreign currency gains 14,837 651 
Other income (expense), net162 (197)
Loss before income tax (49,576)(48,438)
Income tax expense(1,440)— 
Net loss(51,016)(48,438)
Loss per share - basic and diluted(0.05)(0.04)
Weighted-average shares used in calculating net loss per ordinary share - basic and diluted1,107,390,590 1,080,825,300 



8


Zai Lab Limited
Unaudited Condensed Consolidated Statements of Comprehensive Loss
(in thousands of $)
Three Months Ended March 31,
20262025
Net loss(51,016)(48,438)
       Other comprehensive loss, net of tax of nil:
Foreign currency translation adjustments(14,592)(1,212)
Comprehensive loss(65,608)(49,650)




9


Zai Lab Limited
Non-GAAP Measures
(unaudited)
($ in thousands)
Growth on a Constant Exchange Rate (CER) Basis

Three Months Ended March 31,Year over Year % Growth
20262025As reportedAt CER*
Product revenue, net95,556 105,650 (10)%(12)%
Loss from operations(69,385)(56,311)23 %22 %

* The growth rates at CER were calculated assuming the same foreign currency exchange rates were in effect for the current and prior year period

Reconciliation of Loss from Operations (GAAP) to Adjusted Loss from Operations (Non-GAAP)
Three Months Ended March 31,
20262025
GAAP loss from operations(69,385)(56,311)
Plus: Depreciation and amortization expenses3,944 3,458 
Plus: Share-based compensation 13,524 15,800 
Adjusted loss from operations(51,917)(37,053)


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FAQ

How did Zai Lab (ZLAB) perform financially in Q1 2026?

Zai Lab reported Q1 2026 revenue of $99.6 million, down 6% year over year, and a net loss of $51.0 million. Product revenue fell 10% to $95.6 million as ZEJULA and VYVGART declined, partly offset by growth from XACDURO and NUZYRA.

What drove Zai Lab’s product revenue decline in Q1 2026?

Product revenue declined 10% year over year to $95.6 million, mainly because ZEJULA sales fell to $30.0 million from $49.5 million after volume-based procurement for generic olaparib, and VYVGART revenue slipped to $17.6 million due to an NRDL-related pricing adjustment.

What was Zai Lab’s cash position as of March 31, 2026?

As of March 31, 2026, Zai Lab held $761.3 million in cash and cash equivalents, short-term investments, and current restricted cash. Total current assets were $944.7 million, supporting ongoing R&D programs and commercial operations despite continued operating and net losses.

What key clinical data did Zai Lab highlight for zocilurtatug pelitecan (zoci)?

Zai Lab reported standout data for zocilurtatug pelitecan, including a 62.5% confirmed intracranial objective response rate at 1.6 mg/kg in SCLC patients with brain metastases and a 38.2% confirmed response rate across extrapulmonary neuroendocrine carcinomas, with a generally manageable safety profile.

Which partnered programs are contributing to Zai Lab’s future pipeline potential?

The company highlighted positive Phase 3 data for partnered povetacicept in IgA nephropathy, showing a 49.8% UPCR reduction versus placebo, and elegrobart in thyroid eye disease, which achieved 50–63% proptosis responder rates. These programs support regional growth alongside internal assets like zoci and ZL-1503.

How did Zai Lab’s operating expenses and losses change in Q1 2026?

Research and development expenses increased to $65.6 million and SG&A to $65.1 million, contributing to a GAAP operating loss of $69.4 million. Adjusted loss from operations, excluding depreciation, amortization, and share-based compensation, was $51.9 million, up from $37.1 million a year earlier.

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