EXOZ · Exozymes Inc.

The shares underlying the stock option grant vest at a rate of 3,050 shares per month, with 36,609 shares vesting immediately. The final vesting installment consists of 3,078 shares on April 1, 2029. The grant and each exercise of the option is pursuant to Rule 16b-3 of Section 16 of the Securities and Exchange Act of 1934, as amended.

The shares underlying the grant of the restricted stock vest at a rate of 3,923 shares per quarter, with 15,689 shares vesting immediately. The final vesting installment consists of 3,917 shares on April 1, 2029. The grant and each vesting is pursuant to Rule 16b-3 of Section 16 of the Securities and Exchange Act of 1934, as amended.

The Options will vest over a four (4) year period, in equal quarterly installments at the end of each quarter of the calendar year, and the Options will commence vesting on July 1, 2025.The option expires June 29, 2032.

The reported price in Column 4 is a weighted average purchase price. The shares acquired on January 17, 2025 were purchased in multiple transactions at prices ranging from $10.45 to $11.00 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.