Operational and Cash Runway Guidance
Our adjusted gross operating expense (non-GAAP) guidance for combined adjusted research and development (R&D) expense (non-GAAP) and adjusted general and administrative (G&A) expense (non-GAAP) (excluding stock compensation expense) outlines a disciplined framework of approximately $300.0 million in aggregate adjusted gross operating expenditures (non-GAAP) over a three-year period ending December 31, 2028. We expect a greater proportion of adjusted gross operating expense (non-GAAP) to be incurred in 2026 and decline in 2027 and 2028, reflecting a deliberate and measured investment across R&D and G&A aligned with clearly defined strategic priorities. This outlook reflects current expectations, underscores our continued focus on cost discipline and capital allocation rigor, and does not include any potential acquisition-related expenditures.
As of December 31, 2025, the Company had cash resources of approximately $270.6 million (unaudited), consisting of cash, cash equivalents, and marketable securities.
Based on current operating plans and our existing cash resources, and assuming full execution of the $125.0 million share repurchase plan and receipt of anticipated regulatory milestone payments of $440.0 million associated with potential regulatory approvals of Ziihera in GEA in the United States, Europe, Japan, and China, we believe we are positioned to fund planned operations beyond 2028. This anticipated cash runway does not take into account any contribution from additional future milestone payments or royalties related to Ziihera, other current licensed product candidates or contributions from future partnerships and collaborations.
J.P. Morgan Healthcare Conference Presentation and Webcast
Management will participate in the J.P. Morgan Annual Healthcare Conference taking place in San Francisco, California, from January 12-15, 2026, and present on January 14, 2026, at 3:00 pm PT. The presentation and webcast will be available on Zymeworks’ website.
Non-GAAP Information
In addition to reporting financial information in accordance with U.S. generally accepted accounting principles (GAAP) in this press release, we have elected to present selected non-GAAP, or adjusted, financial measures on a forward-looking basis. A reconciliation of anticipated adjusted gross operating expense, adjusted research and development expense, and adjusted general and administrative expense to the most directly comparable GAAP measures is not available without unreasonable effort due to the uncertainty of expenses that may be incurred in the future, and we are also unable to predict the probable significance of such adjusted measures. Accordingly, in reliance on the exception provided by Item 10(e)(1)(i)(B) of Regulation S-K, we have not provided a reconciliation for the adjusted gross operating expense, adjusted research and development expense, and adjusted general and administrative expense guidance provided in this press release. Zymeworks believes that estimated adjusted gross operating expense, adjusted research and development expense, and adjusted general and administrative expense, which are non-GAAP financial measures, may be helpful to investors because they provides consistency and comparability with financial performance across periods. These non-GAAP financial measures are not defined by GAAP and should not be considered as alternatives to operating expenses, research and development expenses, and general and administrative expenses or any other indicators of Zymeworks’ performance required to be reported under GAAP. In addition, other companies, including companies in Zymeworks’ industry, may calculate similarly titled non-GAAP or adjusted measures differently or may use other measures to evaluate their performance, all of which could the reduce the usefulness of adjusted gross operating expense, adjusted research and development expense, and adjusted general and administrative expense as financial measures. As defined by Zymeworks, adjusted gross operating expense represents the aggregate of adjusted research and development expense and adjusted general and administrative expense, each of which excludes stock-based compensation expense for equity- and liability-classified equity instruments.