| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| BLAKE KATRYN | Director | C/O TWIST BIOSCIENCE CORPORATION, 681 GATEWAY BLVD, SOUTH SAN FRANCISCO | /s/ Kendra Fox, as Attorney-in-Fact for Katryn Blake | 07 Aug 2025 | 0001505740 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | TWST | Common Stock | 0 | 05 Aug 2025 | Direct |