Business Strategy & Financial Performance - Zymeworks is transitioning to a revenue-generating organization with in-house R&D capabilities, focusing on royalty streams and strategic capital allocation for shareholder returns[6] - The company reported $103 million in revenues for 2025 as of September 30, 2025[31] - Zymeworks anticipates up to $440 million in near-term milestones from global GEA approvals for Ziihera[20, 31] - A $125 million share repurchase plan has been announced[4, 31] - Existing cash resources are expected to fund operations beyond 2028, assuming full execution of the share repurchase plan and anticipated regulatory milestone payments[2, 31, 82] Pipeline & Partnerships - Zymeworks received a $25 million regulatory milestone payment from Jazz for FDA approval of Ziihera for HER2+ (IHC 3+) BTC[4] - The company also received a $20 million milestone payment from BeOne for NMPA conditional approval of Ziihera for BTC[4] - Zymeworks recognized $25.2 million in partnership milestone payments[4] - Zymeworks has potential future milestone payments of up to $434 million from one partner and up to $1.1 billion from another, plus tiered royalties[22] Clinical Development - Initial clinical data from the Phase 1 trial of ZW191 showed a 64% overall response rate in gynecological cancers at doses ≥6.4mg/kg[42, 49] - ZW251, an ADC targeting GPC3, is in Phase 1 clinical trials for hepatocellular carcinoma (HCC)[4, 55]

Financial Data and Key Metrics Changes - Total revenue for Q3 2025 was $27.6 million, up from $16 million in Q3 2024, primarily due to a $25 million milestone from Janssen and $1 million in royalties from Jazz Pharmaceuticals and BeiGene [9][10]. - Overall operating expenses decreased slightly to $49.7 million in Q3 2025 from $50.2 million in Q3 2024, a reduction of 1% [10]. - Net loss improved to $19.6 million in Q3 2025 compared to a net loss of $29.9 million in Q3 2024, attributed to increased revenue [10][11]. - Cash, cash equivalents, and marketable securities totaled $299.4 million as of September 30, 2025, down from $324.2 million at the end of 2024 [11]. Business Line Data and Key Metrics Changes - The company recognized a $25 million development milestone from Jazz Pharmaceuticals related to the clinical progress of pacritimab, contributing significantly to revenue [6][9]. - Royalty revenues of $1 million were earned based on Ziihera net product sales by Jazz and BeiGene [8]. Market Data and Key Metrics Changes - The company continues to see strong momentum in its partnered programs, with Jazz presenting positive trial data at ESMO [5][6]. - The first patient has been dosed in the phase one clinical trial of ZW251, targeting GPC3 in hepatocellular carcinoma, indicating ongoing clinical development [4][17]. Company Strategy and Development Direction - The company aims to leverage partnerships to accelerate development and maintain control over R&D innovations while de-risking clinical developments [25][27]. - The focus remains on advancing programs with clear differentiation and strong scientific rationale, utilizing partnerships to offset development risks [27]. - The company is committed to disciplined capital allocation to drive sustainable long-term returns [9][25]. Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the company's outlook, citing the strength of the pipeline and the successful execution of clinical trials [8][11]. - The company anticipates that existing cash resources, combined with expected regulatory milestones, will fund operations into the second half of 2027 [11]. Other Important Information - The company completed share repurchases of $22.7 million under its previously authorized program, reflecting confidence in its outlook [8]. - The decision to discontinue the development of ZW171 was made to prioritize programs with clearer paths to patient benefit [20][21]. Q&A Session Summary Question: Thoughts on the update in the PFS analysis for Horizon GEA 01 - Management aligned with Jazz's regulatory strategy regarding the readout of Horizon GEA 01 and did not provide additional comments [30]. Question: Implications of ZW191 data for GPC3 and potential development strategies - Management expressed intrigue regarding the GPC3 construct and emphasized the importance of safety in the hepatocellular carcinoma population [31][33]. Question: Insights on GPC3 payload and preclinical efficacy expectations - Management noted that while topo1 is not standard for liver cancer, there is precedent for its use, and they believe their ADC can deliver effective treatment [38][44]. Question: Confidence in GPC3 activity in the post-IO setting - Management indicated that GPC3 expression levels are not expected to be modulated by IO treatment, supporting their development plan [60][62]. Question: Expectations on durability for ZW191 and potential for partnerships - Management found early data from ZW191 encouraging and indicated ongoing discussions with potential partners [70][71]. Question: Correlation between H-score and PS2 plus scoring methodologies - Management confirmed that H-score is a validated method for evaluating expression levels and correlates well with PS2 plus scores [81][84].

3Q 2025 Results Conference Call and Webcast November 6, 2025 Nasdaq: ZYME | zymeworks.com Legal Disclaimer This presentation and the accompanying oral commentary include "forward-looking statements" or information within the meaning of the applicable securities legislation, including Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements in this presentation and the accompanying oral commentary include, but are no ...

Core Insights - Zymeworks Inc. reported financial results for Q3 and nine months ended September 30, 2025, highlighting progress in clinical trials and financial performance [1][13]. Clinical Highlights - Initial Phase 1 clinical data for ZW191, an antibody-drug conjugate (ADC) targeting folate receptor-α, showed promising results, with objective response rates of 53% overall and 64% for gynecological cancers [3][8]. - The Phase 1 trial for ZW251, targeting GPC3 for hepatocellular carcinoma, has commenced with the first patient dosed [5][7]. - Dose optimization for ZW191 is set to begin in Q4 2025, focusing on safety and efficacy at doses of 6.4 mg/kg and 9.6 mg/kg [4]. Business Updates - The company achieved a $25 million development milestone from Johnson & Johnson in Q3 2025, reflecting ongoing clinical progress [9]. - Zymeworks earned $1 million in royalties from Ziihera® net product sales during Q3 2025 [7][9]. - As of September 30, 2025, Zymeworks had cash resources of $299.4 million, down from $324.2 million at the end of 2024, providing a cash runway into the second half of 2027 [14]. Financial Performance - Total revenue for Q3 2025 was $27.6 million, up from $16 million in Q3 2024, primarily due to higher milestone revenue [13]. - Research and development expenses were $35.6 million in Q3 2025, slightly down from $36.4 million in Q3 2024 [13]. - The net loss for Q3 2025 was $19.6 million, an improvement from a net loss of $29.9 million in Q3 2024 [13][19]. Leadership and Strategic Initiatives - Zymeworks appointed Dr. Adam Schayowitz as Acting Chief Development Officer to enhance R&D and business development efforts [11]. - The company completed $22.7 million in share repurchases as part of its strategic program, aimed at enhancing shareholder value [12][13].

Core Viewpoint - Zymeworks Inc. is set to report its third quarter 2025 financial results on November 6, 2025, followed by a conference call and webcast to discuss the results and provide a corporate update [1][2]. Company Overview - Zymeworks Inc. is a clinical-stage biotechnology company focused on developing novel, multifunctional biotherapeutics aimed at improving treatment for difficult-to-treat diseases such as cancer, inflammation, and autoimmune diseases [3]. - The company utilizes its proprietary Azymetric™ technology to engineer and develop zanidatamab, a HER2-targeted bispecific antibody, which has received accelerated approval from the U.S. FDA and conditional approvals in China and Europe for treating specific types of cancer [3]. - Zymeworks is advancing a robust pipeline of product candidates, including ZW191, which is currently in a Phase 1 study, and ZW251, expected to enter clinical trials in 2025 [3]. - The company has established strategic partnerships with global biopharmaceutical companies to leverage its therapeutic platforms [3].

Core Insights - Zymeworks Inc. has appointed Adam Schayowitz, Ph.D., MBA as Acting Chief Development Officer to enhance its R&D and business development efforts [1][2][3] Company Overview - Zymeworks is a clinical-stage biotechnology company focused on developing multifunctional biotherapeutics for challenging diseases such as cancer, inflammation, and autoimmune disorders [1][5] - The company has a diverse pipeline of product candidates, including zanidatamab, which has received multiple regulatory approvals [5][6] Leadership Appointment - Dr. Schayowitz will report to Kenneth Galbraith, the Chair & CEO, and will work closely with R&D and Business Development teams to advance the company's product candidates [2][3] - He brings nearly 20 years of experience in oncology drug development, having held leadership roles at Pfizer Oncology and other biotech firms [3][4] Strategic Focus - The company aims to strengthen partnerships and collaborations while advancing its R&D portfolio [4][5] - Recent milestones include investigational new drug clearance for ZW251 and expanded global approvals for zanidatamab, indicating a focus on execution across the development pipeline [3][5] Product Pipeline - Zymeworks is advancing a robust pipeline, with ZW191 in Phase 1 recruitment and ZW251 expected to enter clinical trials in 2025 [5][6] - Zanidatamab is the first dual HER2-targeted bispecific antibody approved for treating HER2-positive biliary tract cancer in the U.S., Europe, and China [5]

Financial Data and Key Metrics Changes - The company has approximately $500 million left in regulatory milestones and about $860 million in commercial milestones, with royalties ranging from 10% to 20% based on net sales [10][11][12] Business Line Data and Key Metrics Changes - The zanidatamab program is a significant focus, with upcoming Phase 3 study readouts expected in Q4, which could drive value for the company [6][10] - ZW171 has been discontinued due to on-target, off-tumor toxicity, reflecting the company's disciplined approach to capital allocation [14][16][17] Market Data and Key Metrics Changes - The competitive landscape for zanidatamab includes potential opportunities in breast cancer, with Jazz Pharmaceuticals exploring this area [11][12] - ZW191 is positioned as a strong contender in the folate receptor alpha ADC space, with a focus on differentiating its product through superior internalization and potency [20][21][22] Company Strategy and Development Direction - The company emphasizes a disciplined approach to capital allocation and decision-making regarding its pipeline programs, focusing on those with the highest potential for patient benefit [14][16] - The strategy includes exploring partnerships for various programs, particularly ZW191, to enhance development and market reach [30][39] Management's Comments on Operating Environment and Future Outlook - Management expressed optimism about the upcoming data readouts and the potential for zanidatamab to capture significant market value, estimating a valuation of over $2 billion [12][13][45] - The company is preparing for multiple catalysts over the next 12 to 18 months, including clinical studies for ZW251 and ZW209 [45] Other Important Information - The ZW209 program, utilizing a tri-TCE platform, is expected to enter clinical trials in the first half of 2026, showcasing the company's commitment to advancing its innovative pipeline [34][45] - The company is also exploring early-stage pipeline opportunities, including novel targets and ADCs, to leverage its protein engineering capabilities [33][34] Q&A Session Summary Question: What is the significance of the upcoming zanidatamab readout? - The readout is expected to provide clarity on the differentiation of zanidatamab in the competitive landscape, particularly in gastroesophageal adenocarcinoma [6][7] Question: What are the financial implications of the zanidatamab program? - The company has significant regulatory and commercial milestones associated with zanidatamab, which could lead to substantial revenue through royalties and milestone payments [10][11] Question: What led to the discontinuation of ZW171? - The decision was based on a lack of efficacy and on-target, off-tumor toxicity, demonstrating the company's commitment to prudent capital allocation [14][16][17] Question: How does Zymeworks differentiate its ADCs? - The company focuses on the holistic design of ADCs, ensuring that the antibody is optimized for internalization and payload delivery, which sets it apart from competitors [20][21][22] Question: What are the next steps for ZW191? - The company is considering partnerships for ZW191 and exploring various tumor types for clinical trials, including ovarian and endometrial cancers [30][39]

Core Points - Zymeworks Inc. has decided to voluntarily discontinue the clinical development of ZW171, a T-cell engager targeting gynecological, thoracic, and digestive system cancers [1] - The decision was made after completing the planned cohorts of the dose escalation portion of the Phase 1 trial in patients with ovarian cancer and non-small cell lung cancer [2] - Zymeworks determined that further dose evaluation would unlikely support a benefit-risk profile consistent with the desired monotherapy target product profile [3] - While cytokine release syndrome was well-managed, dose-limiting toxicities were observed, consistent with mesothelin-related on-target off-tumor toxicity [4] - Ongoing participants in the Phase 1 trial will continue treatment at the discretion of their investigator, and those who have discontinued will continue safety follow-up as per the study protocol [4] - The company continues to advance its broader product pipeline, including ongoing trials for ZW191 and ZW251, with an IND filing for ZW209 planned for the first half of 2026 [5] - Following the announcement, ZYME stock decreased by 5%, trading at $14.07 [5]

Core Viewpoint - Zymeworks Inc. has decided to voluntarily discontinue the clinical development of ZW171, a T cell engager targeting specific cancers, after evaluating the results from the Phase 1 trial, which indicated that further development would not support a favorable benefit-risk profile [1][3][4]. Company Overview - Zymeworks Inc. is a clinical-stage biotechnology company focused on developing novel biotherapeutics for difficult-to-treat diseases, including cancer, inflammation, and autoimmune diseases [1][5]. - The company utilizes proprietary technologies, such as Azymetric™, to engineer and develop differentiated antibody-based therapeutic candidates [5]. Clinical Development Update - The decision to halt ZW171's development was based on the completion of planned cohorts in the Phase 1 trial, where a maximum tolerated dose was established, but dose-limiting toxicities were observed [3]. - Ongoing participants in the trial will continue treatment at the discretion of their investigators, while those who have discontinued will undergo safety follow-up as per the study protocol [3]. Future Pipeline - Despite the setback with ZW171, Zymeworks is advancing its broader product pipeline, including the ongoing Phase 1 trial of ZW191 and the expected initiation of a Phase 1 study for ZW251 in 2025 [4]. - The company is also preparing an IND filing for ZW209, a DLL3-directed trispecific T cell engager, planned for the first half of 2026 [4]. Product Achievements - Zymeworks has developed zanidatamab, a HER2-targeted bispecific antibody, which has received accelerated approval from the U.S. FDA and conditional approvals in China and Europe for treating specific cancer types [5]. - Zanidatamab is being evaluated in multiple global clinical trials as a potential best-in-class treatment for various HER2-expressing cancers [5]. Strategic Partnerships - The company has entered into agreements with BeOne Medicines Ltd. and Jazz Pharmaceuticals, granting them exclusive rights to develop and commercialize zanidatamab in different territories [5].

Financial Data and Key Metrics Changes - Total revenue increased to $48.7 million in Q2 2025 from $19.2 million in Q2 2024, primarily due to a $20 million milestone from B1 and recognition of $80.3 million in deferred revenue [15][16] - Operating expenses decreased by 20% to $49.4 million in Q2 2025 from $62.1 million in Q2 2024, mainly due to a prior year impairment charge [17] - Net income was $2.3 million for Q2 2025, compared to a net loss of $37.7 million in Q2 2024 [17][18] - Cash resources increased to $333.4 million as of June 30, 2025, from $124.2 million at the end of 2024 [18] Business Line Data and Key Metrics Changes - The company has three product candidates in active Phase I trials in 2025, with two additional candidates expected to enter the clinic in 2026 [7][8] - Zanadatumab showed a median progression-free survival of 15.2 months and overall survival of 36.5 months in a study involving HER2 positive tumors [9][10] - The company recognized a $7.5 million option exercise payment related to a licensing agreement with BMS [14] Market Data and Key Metrics Changes - Conditional regulatory approvals for zanadatumab in China and Europe are expected to increase international patient access and potential future royalties [10][13] - The company anticipates an increase in royalty revenues from zanadatumab's international approvals for biliary tract cancer [13] Company Strategy and Development Direction - The company aims to leverage its proprietary technology platforms and strategic partnerships to enhance asset value and deliver long-term returns for shareholders [44][46] - The focus is on advancing a wholly owned pipeline of differentiated antibody drug conjugates and multi-specific antibodies across various therapeutic areas [46][48] - The company is committed to maintaining a science-first approach while exploring partnerships to share risk and resources [48][49] Management's Comments on Operating Environment and Future Outlook - Management emphasized the importance of capital discipline and clarity in strategy to drive long-term value [44][51] - The company is focused on maximizing cash flow streams from royalties and other healthcare assets while maintaining flexibility in operations [51][52] - Anticipated growth in royalty and milestone income is not expected to trigger an automatic increase in operational expenditures [51] Other Important Information - The company presented data on its novel IL-4, IL-33 bispecific antibody for COPD at a recent conference, highlighting its potential in treating respiratory diseases [36][38] - The IND clearance for ZW251, targeting hepatocellular carcinoma, is seen as a significant advancement in the company's pipeline [28][29] Q&A Session Summary Question: Will PDL1 status be broken out for the triplet for arm C in the top line? - The inclusion of data in a top line press release will be determined by Jazz and B1, the sponsors of the studies [56][57] Question: How much of the ZANI $525 million regulatory milestone is weighted towards GEA versus other indications? - There is $500 million left in development milestones with Jazz, but no specific guidance on allocation has been provided [57] Question: How does ZW191 compare to other topoisomerase-based ADCs? - The company aims to create a differentiated asset with a novel mechanism and tolerability profile, which could allow for combinations with other treatments [60][63] Question: What is the approach for evaluating ZW251 in liver cancer patients? - The company will systematically study the tolerability and efficacy of ZW251 in appropriate patient subsets, considering liver impairment [68][69] Question: When can data from the Phase I trial of ZW191 be expected? - Initial data is anticipated to be shared at peer-reviewed meetings in 2025 or 2026, depending on abstract acceptance [74] Question: What is known about the expression of alpha in non-small cell lung cancer? - Analysis shows a subset of non-small cell lung cancer patients with BOLT receptor expression, encouraging further evaluation in this indication [78]