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Zymeworks (ZYME) investor relations material

Zymeworks Q3 2025 earnings summary

Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
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Q3 2025 earnings summary6 Nov, 2025

Executive summary

  • Phase 1 data for ZW191 ADC showed a 64% objective response rate in gynecological cancers and activity across folate receptor alpha expression levels, with a manageable safety profile as of September 2025.

  • First patient dosed in phase one trial of ZW251, a DAR4 ADC targeting GPC3 in hepatocellular carcinoma, in October 2025.

  • Achieved $25 million milestone revenue from Johnson & Johnson for pasritamig entering Phase 3; up to $434 million in future milestones and royalties possible.

  • Completed $22.7 million in share repurchases, reflecting confidence in long-term outlook and capital allocation discipline.

  • Key partnerships advanced, with new data presentations at major conferences and expanded analyses for zanidatamab trials.

Financial highlights

  • Q3 2025 total revenue was $27.6 million, up from $16 million in Q3 2024, driven by a $25 million J&J milestone and $1 million in royalties.

  • Operating expenses were $49.7 million, with R&D at $35.6 million and G&A at $14.1 million for 3Q 2025.

  • Net loss narrowed to $19.6 million from $29.9 million year-over-year, mainly due to higher revenue.

  • Cash, cash equivalents, and marketable securities totaled $299.4 million as of September 30, 2025, not including the $25 million milestone to be received in Q4.

  • $22.7 million spent on share repurchases, acquiring 1,439,068 shares at an average price of $15.80.

Outlook and guidance

  • Existing cash resources, plus anticipated milestones, expected to fund operations into the second half of 2027.

  • Additional pivotal data from the Horizon GEA 01 study and top-line PFS data from zanidatamab Phase 3 1L GEA trial expected in Q4 2025.

  • Dose optimization for ZW191 in ovarian cancer to begin in 4Q 2025.

  • Partnership discussions underway to accelerate development and inform registration strategies.

  • Continued focus on advancing differentiated programs and leveraging partnerships to offset development risk.

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Frequently asked questions

Zymeworks Inc. is a clinical-stage biopharmaceutical company dedicated to the discovery, development and commercialization of next-generation bispecific, multifunctional biotherapeutics, initially focused on the treatment of cancer. The company's proprietary Azymetric platform combines its modular and flexible Fc engineering with non-Fc-containing domains designed to enable modulation of therapeutic index in order to address multiple biological targets simultaneously from a single protein. The partnering team brings together a comprehensive set of skills and expertise spanning early drug discovery through product commercialization.

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