| Id | Content |
|---|---|
| F1 | Stock options vest as follows: (i) 25% of underlying shares of common stock on first anniversary of grant date and (ii) remainder of underlying shares of common stock in 36 equal monthly installments on last day of month following first anniversary of grant date. |
| F2 | Each restricted stock unit ("RSU") represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock. |
| F3 | The RSUs vest in three equal annual installments beginning on January 5, 2024. |
Exhibit List - Exhibit 24 - Power of Attorney. On October 13, 2022, the Issuer (formerly Zymeworks Delaware Inc., a Delaware corporation) became the successor issuer of Zymeworks BC Inc. (formerly Zymeworks Inc., a corporation continued under the Business Corporations Act (British Columbia)) pursuant to Rule 12g-3 of the Securities Exchange Act of 1934, as amended. On such date the Issuer completed a series of transactions, including a redomicile, pursuant to a statutory plan of arrangement under Section 288 of the Business Corporations Act (British Columbia), as a result of which common shares of Zymeworks BC Inc. were exchanged for either shares of common stock of the Issuer or exchangeable shares issued by Zymeworks ExchangeCo Ltd., an indirect subsidiary of the Issuer.