X0508 4 2025-02-21 0001581280 Twist Bioscience Corp TWST 0001753672 Green Paula C/O TWIST BIOSCIENCE CORPORATION 681 GATEWAY BLVD. SOUTH SAN FRANCISCO CA 94080 false true false false SVP of Human Resources 0 Common Stock 2025-02-21 4 S false 618 44.177 D 131830 D Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the satisfaction of a tax withholding obligation to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person. Includes shares that were acquired under the Issuer's Employee Stock Purchase Plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c). /s/ Dennis Cho, as Attorney-in-Fact for Paula Green 2025-02-25