Twist Bioscience's three largest insider shareholders as of April 22, 2026 are Emily M. Leproust (Chief Executive Officer, 858.89K shares), Keith Crandell (Director, 559.99K shares), William Banyai (See Remark, 345.19K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Emily M. Leproust | Chief Executive Officer | 858,887 | 0 | 24 Mar, 2026 |
| Keith Crandell | - | 0 | 559,989 | 13 Aug, 2021 |
| William Banyai | See Remark | 345,188 | 0 | 07 May, 2024 |
| Patrick John Finn | President And Coo | 284,129 | 0 | 25 Feb, 2026 |
| Dennis Cho | - | 137,903 | 0 | 24 Mar, 2026 |
| Paula Green | Svp Of Human Resources | 124,104 | 0 | 24 Mar, 2026 |
| Adam Laponis | Chief Financial Officer | 118,694 | 0 | 21 Apr, 2026 |
| James M Thorburn | Chief Financial Officer | 86,334 | 0 | 04 Jan, 2024 |
| Robert F. Werner | Chief Accounting Officer | 54,799 | 0 | 10 Mar, 2026 |
| Robert F. Werner | Chief Accounting Officer | 54,799 | 0 | 10 Mar, 2026 |
| Robert F. Werner | Chief Accounting Officer | 54,799 | 0 | 10 Mar, 2026 |
| Robert F. Werner | Chief Accounting Officer | 54,799 | 0 | 10 Mar, 2026 |
| Patrick Weiss | Chief Operating Officer | 47,401 | 0 | 01 Apr, 2022 |
| Patrick Weiss | Chief Operating Officer | 47,401 | 0 | 01 Apr, 2022 |
| Patrick Weiss | Chief Operating Officer | 47,401 | 0 | 01 Apr, 2022 |
| Patrick Weiss | Chief Operating Officer | 47,401 | 0 | 01 Apr, 2022 |
| Nelson Chan | - | 33,251 | 0 | 09 Feb, 2026 |
| Xiaoying Mai | - | 31,057 | 0 | 09 Feb, 2024 |
| Robert P Ragusa | - | 28,983 | 0 | 09 Feb, 2026 |
| Keith Crandell | - | 27,571 | 0 | 09 Feb, 2026 |
| Melissa A. Starovasnik | - | 25,722 | 0 | 03 Apr, 2026 |
| Nicolas Barthelemy | - | 23,021 | 0 | 23 Nov, 2022 |
| Robert Chess | - | 21,084 | 0 | 19 Mar, 2026 |
| Katryn Blake | - | 19,448 | 0 | 09 Feb, 2026 |
| Jan Johannessen | - | 17,754 | 0 | 09 Feb, 2026 |
| Kevin Bruce Yankton | Chief Accounting Officer | 9,115 | 0 | 19 May, 2023 |
| Kevin Bruce Yankton | Chief Accounting Officer | 9,115 | 0 | 19 May, 2023 |
| Kevin Bruce Yankton | Chief Accounting Officer | 9,115 | 0 | 19 May, 2023 |
| Kevin Bruce Yankton | Chief Accounting Officer | 9,115 | 0 | 19 May, 2023 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 17 Apr, 2026 | Adam Laponis | Common Stock | D | 4,000 | $60.00 | 118,694 | D | S |
| 14 Apr, 2026 | Adam Laponis | Common Stock | D | 3,000 | $55.00 | 122,694 | D | S |
| 09 Apr, 2026 | Adam Laponis | Common Stock | D | 2,597 | $49.89 | 125,694 | D | S |
| 01 Apr, 2026 | Melissa A. Starovasnik | Common Stock | D | 1,000 | $51.00 | 25,722 | D | S |
| 20 Mar, 2026 | Paula Green | Common Stock | D | 297 | $43.79 | 124,104 | D | S |
| 20 Mar, 2026 | Dennis Cho | Common Stock | D | 354 | $43.79 | 137,903 | D | S |
| 20 Mar, 2026 | Emily M. Leproust | Common Stock | D | 1,742 | $43.79 | 858,887 | D | S |
| 17 Mar, 2026 | Robert Chess | Common Stock | A | 10,000 | $11.89 | 31,084 | D | M |
| 17 Mar, 2026 | Robert Chess | Common Stock | D | 10,000 | $47.00 | 21,084 | D | S |
| 17 Mar, 2026 | Robert Chess | Stock Option (right to buy) | D | 10,000 | $0.00 | 18,417 | D | M |
| 06 Mar, 2026 | Robert F. Werner | Common Stock | D | 246 | $46.43 | 54,799 | D | S |
| 06 Mar, 2026 | Robert F. Werner | Common Stock | D | 246 | $46.43 | 54,799 | D | S |
| 06 Mar, 2026 | Emily M. Leproust | Common Stock | D | 2,423 | $46.43 | 860,629 | D | S |
| 06 Mar, 2026 | Dennis Cho | Common Stock | D | 425 | $46.43 | 138,257 | D | S |
| 06 Mar, 2026 | Robert F. Werner | Common Stock | D | 246 | $46.43 | 54,799 | D | S |
| 06 Mar, 2026 | Paula Green | Common Stock | D | 935 | $46.43 | 124,401 | D | S |
| 06 Mar, 2026 | Robert F. Werner | Common Stock | D | 246 | $46.43 | 54,799 | D | S |
| 23 Feb, 2026 | Robert F. Werner | Common Stock | D | 1,693 | $46.71 | 55,045 | D | S |
| 23 Feb, 2026 | Robert F. Werner | Common Stock | D | 1,693 | $46.71 | 55,045 | D | S |
| 23 Feb, 2026 | Robert F. Werner | Common Stock | D | 1,693 | $46.71 | 55,045 | D | S |