Zymeworks Inc. Award Timing Disclosure Disclosure

We do not take material nonpublic information into account in determining the timing of such awards. Further, we have not timed the disclosure of material nonpublic information for the purpose of affecting the value of executive compensation. We typically grant annual equity awards (including stock options) to our executive officers and non-executive employees early in the first quarter of each year. For equity awards to executive officers in connection with their hire date, such grants are typically made on the date of the commencement of their employment. For equity awards to non-executive employees in connection with their hire date, such grants are typically made on a pre-determined date in the month following the commencement of their employment. We have never granted stock appreciation rights to any employees or other service providers.