Twist Bioscience's top three insider shareholders as of March 23, 2026 are Emily M. Leproust (Chief Executive Officer, 860.63K shares), William Banyai (See Remark, 345.19K shares), Patrick John Finn (President And Coo, 284.13K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Emily M. Leproust | Chief Executive Officer | 860,629 | 0 | 10 Mar, 2026 |
| William Banyai | See Remark | 345,188 | 0 | 07 May, 2024 |
| Patrick John Finn | President And Coo | 284,129 | 0 | 25 Feb, 2026 |
| Dennis Cho | See Remarks | 138,257 | 0 | 10 Mar, 2026 |
| Adam Laponis | Chief Financial Officer | 128,291 | 0 | 25 Feb, 2026 |
| Paula Green | Svp Of Human Resources | 124,401 | 0 | 10 Mar, 2026 |
| Mark Daniels | See Remarks | 66,736 | 0 | 05 Apr, 2021 |
| Robert F. Werner | Chief Accounting Officer | 54,799 | 0 | 10 Mar, 2026 |
| Patrick Weiss | Chief Operating Officer | 47,401 | 0 | 01 Apr, 2022 |
| Xiaoying Mai | 31,057 | 0 | 09 Feb, 2024 | |
| Melissa A. Starovasnik | 26,722 | 0 | 09 Feb, 2026 | |
| Robert Chess | 21,084 | 0 | 19 Mar, 2026 | |
| 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 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 | Dennis Cho | Common Stock | D | 425 | $46.43 | 138,257 | 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 |
| 06 Mar, 2026 | Emily M. Leproust | Common Stock | D | 2,423 | $46.43 | 860,629 | D | S |
| 23 Feb, 2026 | Paula Green | Common Stock | D | 1,465 | $46.71 | 125,336 | D | S |
| 23 Feb, 2026 | Adam Laponis | Common Stock | D | 2,085 | $46.71 | 128,291 | D | S |
| 23 Feb, 2026 | Dennis Cho | Common Stock | D | 844 | $46.71 | 138,682 | D | S |
| 23 Feb, 2026 | Robert F. Werner | Common Stock | D | 1,693 | $46.71 | 55,045 | D | S |
| 23 Feb, 2026 | Emily M. Leproust | Common Stock | D | 7,205 | $46.71 | 863,052 | D | S |
| 23 Feb, 2026 | Patrick John Finn | Common Stock | D | 4,294 | $46.71 | 284,129 | D | S |
| 17 Feb, 2026 | Paula Green | Common Stock | D | 39,404 | $52.40 | 126,041 | D | S |
| 17 Feb, 2026 | Patrick John Finn | Common Stock | A | 18,205 | $23.33 | 324,455 | D | M |
| 17 Feb, 2026 | Patrick John Finn | Common Stock | A | 32,300 | $26.66 | 356,755 | D | M |
| 17 Feb, 2026 | Patrick John Finn | Common Stock | D | 21,858 | $50.32 | 334,897 | D | S |
| 17 Feb, 2026 | Patrick John Finn | Common Stock | D | 16,616 | $51.42 | 318,281 | D | S |
| 17 Feb, 2026 | Patrick John Finn | Common Stock | D | 26,952 | $52.69 | 291,329 | D | S |
| 17 Feb, 2026 | Patrick John Finn | Common Stock | D | 3,541 | $53.11 | 287,788 | D | S |