According to recent filings covering the 90 days ending February 19, 2026, the three most significant insider holders at Twist Bioscience are Chief Executive Officer Emily M. Leproust (869.31K shares), See Remark William Banyai (345.19K shares), President And Coo Patrick John Finn (306.25K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Emily M. Leproust | Chief Executive Officer | 869,312 | 05 Feb, 2026 |
| William Banyai | See Remark | 345,188 | 07 May, 2024 |
| Patrick John Finn | President And Coo | 306,250 | 17 Feb, 2026 |
| Paula Green | Svp Of Human Resources | 165,445 | 05 Feb, 2026 |
| Keith Crandell | 147,206 | 09 Feb, 2026 | |
| Dennis Cho | Nan | 138,581 | 13 Feb, 2026 |
| Adam Laponis | Chief Financial Officer | 130,031 | 13 Feb, 2026 |
| James M Thorburn | Chief Financial Officer | 86,334 | 04 Jan, 2024 |
| Mark Daniels | Nan | 66,736 | 07 Apr, 2021 |
| Robert F. Werner | Chief Accounting Officer | 56,738 | 11 Feb, 2026 |
| Patrick Weiss | Chief Operating Officer | 47,401 | 05 Apr, 2022 |
| Nelson Chan | 33,251 | 09 Feb, 2026 | |
| Xiaoying Mai | 31,057 | 09 Feb, 2024 | |
| Robert P Ragusa | 28,983 | 09 Feb, 2026 | |
| Melissa A. Starovasnik | 26,722 | 09 Feb, 2026 | |
| Robert Chess | 23,268 | 09 Feb, 2026 | |
| Nicolas Barthelemy | 23,021 | 23 Nov, 2022 | |
| Katryn Blake | 19,448 | 09 Feb, 2026 | |
| Jan Johannessen | 17,754 | 09 Feb, 2026 | |
| Kevin Bruce Yankton | Chief Accounting Officer | 9,115 | 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 |
|---|---|---|---|---|---|---|---|---|
| 13 Feb, 2026 | Patrick John Finn | Common Stock | A | 500 | $23.33 | 307,288 | D | M |
| 13 Feb, 2026 | Patrick John Finn | Common Stock | D | 1,750 | $50.04 | 306,250 | D | S |
| 13 Feb, 2026 | Patrick John Finn | Common Stock | A | 712 | $26.66 | 308,000 | D | M |
| 12 Feb, 2026 | Patrick John Finn | Common Stock | A | 1,000 | $23.33 | 308,788 | D | M |
| 12 Feb, 2026 | Patrick John Finn | Common Stock | A | 1,500 | $26.66 | 310,288 | D | M |
| 12 Feb, 2026 | Patrick John Finn | Common Stock | D | 3,500 | $50.22 | 306,788 | D | S |
| 12 Feb, 2026 | Adam Laponis | Common Stock | D | 7,000 | $50.00 | 130,031 | D | S |
| 11 Feb, 2026 | Dennis Cho | Common Stock | D | 5,000 | $49.93 | 138,581 | D | S |
| 09 Feb, 2026 | Robert F. Werner | Common Stock | D | 2,000 | $0.00 | 56,738 | D | G |
| 06 Feb, 2026 | Jan Johannessen | Common Stock | D | 2,200 | $47.91 | 17,754 | D | S |
| 05 Feb, 2026 | Keith Crandell | Common Stock | A | 5,095 | $0.00 | 27,571 | D | A |
| 05 Feb, 2026 | Robert P Ragusa | Common Stock | A | 5,095 | $0.00 | 28,983 | D | A |
| 05 Feb, 2026 | Jan Johannessen | Common Stock | A | 5,095 | $0.00 | 19,954 | D | A |
| 05 Feb, 2026 | Robert Chess | Common Stock | A | 5,095 | $0.00 | 23,268 | D | A |
| 05 Feb, 2026 | Nelson Chan | Common Stock | A | 5,095 | $0.00 | 33,251 | D | A |
| 05 Feb, 2026 | Katryn Blake | Common Stock | A | 5,095 | $0.00 | 19,448 | D | A |
| 05 Feb, 2026 | Melissa A. Starovasnik | Common Stock | A | 5,095 | $0.00 | 26,722 | D | A |
| 04 Feb, 2026 | Robert F. Werner | Common Stock | D | 7,000 | $45.65 | 58,738 | D | S |
| 03 Feb, 2026 | Robert F. Werner | Common Stock | D | 175 | $46.58 | 65,738 | D | S |
| 03 Feb, 2026 | Emily M. Leproust | Common Stock | D | 5,001 | $46.58 | 869,312 | D | S |