Ownership & Insider Lab
Twist Bioscience Corp (TWST)
Nasdaq · SEC CIK 0001581280
This is the supported SEC-traceable subset, not total insider ownership or personal wealth. Values reflect the current disclosed positions Grizzly Bulls can resolve and value. Latest source filing: Sep 10, 2026 · values through Sep 25, 2026.
Covered reporting owners
Filter the reporting-owner snapshot by holder, role, or security. Position values are shown only where the current reviewed data supports them.
| Holder | Role | Position | Current value | Latest filing |
|---|---|---|---|---|
| Emily M. Leproust | Chief Executive Officer · Director | 768,427 sharesCommon Stock | $140.56M | Sep 10, 2026 |
| Dennis Cho | See Remarks | 73,651 sharesCommon Stock | $13.47M | Sep 10, 2026 |
| Robert F. Werner | Chief Accounting Officer | 44,399 sharesCommon Stock | $8.12M | Sep 10, 2026 |
Recent supported insider transactions
These are supported direct, non-derivative historical transactions from companies where recent transaction history has passed separate review. Reported price is shown when present. The lab does not calculate gross proceeds and does not treat historical transactions as current wealth.
| Date | Holder | Action | Security | Units | Reported price | Filing |
|---|---|---|---|---|---|---|
| Sep 24, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 83 shares | $184.603 | 4 |
| Sep 24, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 501 shares | $183.7641 | 4 |
| Sep 24, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 16 shares | $182.5 | 4 |
| Sep 24, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 21 shares | $181.4519 | 4 |
| Sep 24, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 515 shares | $180.3911 | 4 |
| Sep 24, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 143 shares | $179.9331 | 4 |
| Sep 24, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 330 shares | $178.6683 | 4 |
| Sep 24, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 164 shares | $177.1699 | 4 |
| Sep 24, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 945 shares | $176.3917 | 4 |
| Sep 24, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 2,485 shares | $175.2313 | 4 |
| Sep 21, 2026 | Dennis Cho | SaleSEC code S | Common Stock | 348 shares | $165.491 | 4 |
| Sep 21, 2026 | Emily M. Leproust | SaleSEC code S | Common Stock | 1,687 shares | $165.491 | 4 |
Published 12 of 48 source candidates under the current reviewed security-resolution rules.
Covered securities
| Security | Instrument family | Covered positions | Covered value |
|---|---|---|---|
| Common Stock | ordinary-share | 3 | $162.15M |
Coverage and interpretation
Current holdings: direct positions that the reviewed ownership data can trace to an exact reporting owner, legal security, and current-basis quantity.
Current value: the existing published company-position valuation. This lab does not recalculate security values or infer missing positions.
Transactions: historical flow observations only. They are not used to reconstruct current ownership and are shown only for companies where recent transaction history is currently published.
Not included here: a claim of total insider ownership, total personal wealth, institutional 13F ownership, or an investment recommendation.