Twist Bioscience Corp
TWST- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001581280
In the last 90 days, Twist Bioscience Corp insiders filed 0 open-market purchases and 30 sales; 337 institutions reported holding it in 13F filings for Q2 2026, worth $7.85B in total; ARK Invest is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Twist Bioscience Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 30 filings
- 8 insiders, $99.7M in total
- Insiders trading
- 8
- Net value
- −$99.7M
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Twist Bioscience Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Leproust Emily M. | Chief Executive Officer | 613,699 | Sep 25, 2026 | 30 |
| Cho Dennis | See Remarks | 73,303 | Sep 23, 2026 | 26 |
| Green Paula | SVP of Human Resources | 116,720 | Sep 23, 2026 | 23 |
| Werner Robert F. | Chief Accounting Officer | 44,399 | Sep 10, 2026 | 19 |
| Finn Patrick John | President and COO | 210,802 | Aug 25, 2026 | 21 |
| Laponis Adam | Chief Financial Officer | 108,633 | Aug 25, 2026 | 17 |
| Blake Katryn | Director | 17,208 | Aug 14, 2026 | 2 |
| Chess Robert | Director | 21,084 | Aug 11, 2026 | 4 |
| Starovasnik Melissa A. | Director | 22,222 | Jun 1, 2026 | 5 |
| Johannessen Jan | Director | 17,754 | May 14, 2026 | 3 |
| Crandell Keith | Director | 27,571 | Feb 9, 2026 | 1 |
| Ragusa Robert P | Director | 28,983 | Feb 9, 2026 | 1 |
| Chan Nelson C | Director | 33,251 | Feb 9, 2026 | 1 |
| Banyai William | See Remark | 345,188 | May 7, 2024 | 0 |
| Mai Xiaoying | Director | 31,057 | Feb 9, 2024 | 0 |
| Thorburn James M | Chief Financial Officer | 86,334 | Jan 4, 2024 | 0 |
| Yankton Kevin Bruce | Chief Accounting Officer | 9,115 | May 19, 2023 | 0 |
| Barthelemy Nicolas | Director | 23,021 | Nov 23, 2022 | 0 |
| Weiss Patrick | Chief Operating Officer | 47,401 | Apr 5, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 18, 2024 (view filing) | Sep 16 | 2 days | Cho DennisSee Remarks | SSale | −94 | $46.42 | −$4.36K | −0.1%78.6K after | |
| Sep 10, 2024 (view filing) | Sep 6 | 4 days | Cho DennisSee Remarks | SSale | −275 | $39.16 | −$10.8K | −0.3%78.7K after | |
| Sep 10, 2024 (view filing) | Sep 6 | 4 days | Green PaulaSVP of Human Resources | SSale | −912 | $39.16 | −$35.7K | −1.0%88.2K after | |
| Sep 10, 2024 (view filing) | Sep 6 | 4 days | Werner Robert F.Chief Accounting Officer | SSale | −240 | $39.16 | −$9.40K | −0.6%38.7K after | |
| Sep 10, 2024 (view filing) | Sep 6 | 4 days | Leproust Emily M.Chief Executive Officer | SSale | −2.34K | $39.16 | −$91.6K | −0.5%497.3K after | |
| Aug 27, 2024 (view filing) | Aug 23 | 4 days | Werner Robert F.Chief Accounting Officer | SSale | −813 | $43.14 | −$35.1K | −2.0%39.0K after | |
| Aug 7, 2024 (view filing) | Aug 5 | 2 days | Cho DennisSee Remarks | SSale | −709 | $39.93 | −$28.3K | −0.9%79.0K after | |
| Aug 7, 2024 (view filing) | Aug 5 | 2 days | Finn Patrick JohnPresident and COO | SSale | −2.88K | $39.93 | −$115.2K | −1.7%168.3K after | |
| Aug 7, 2024 (view filing) | Aug 5 | 2 days | Green PaulaSVP of Human Resources | SSale | −1.14K | $39.93 | −$45.4K | −1.3%88.8K after | |
| Aug 7, 2024 (view filing) | Aug 5 | 2 days | Leproust Emily M.Chief Executive Officer | SSale | −5.14K | $39.93 | −$205.2K | −1.0%499.6K after | |
| Aug 7, 2024 (view filing) | Aug 5 | 2 days | Werner Robert F.Chief Accounting Officer | SSale | −168 | $39.93 | −$6.71K | −0.4%39.8K after | |
| Jul 25, 2024 (view filing) | Jul 23 | 2 days | Finn Patrick JohnPresident and COO | SSale | −2.21K | $56.63 | −$125.0K | −1.3%171.2K after | |
| Jul 11, 2024 (view filing) | Jul 9 | 2 days | Laponis AdamChief Financial Officer | SSale | −842 | $48.91 | −$41.2K | −1.1%73.6K after | |
| Jul 5, 2024 (view filing) | Jul 2 | 3 days | Cho DennisSee Remarks | SSale | −126 | $48.00 | −$6.05K | −0.2%79.7K after | |
| Jul 5, 2024 (view filing) | Jul 2 | 3 days | Leproust Emily M.Chief Executive Officer | SSale | −1.11K | $48.00 | −$53.5K | −0.2%504.7K after | |
| Jul 5, 2024 (view filing) | Jul 2 | 3 days | Green PaulaSVP of Human Resources | SSale | −322 | $48.00 | −$15.5K | −0.4%90.0K after | |
| Jul 5, 2024 (view filing) | Jul 2 | 3 days | Finn Patrick JohnPresident and COO | SSale | −476 | $48.00 | −$22.8K | −0.3%173.4K after | |
| Jun 24, 2024 (view filing) | Jun 20 | 4 days | Leproust Emily M.Chief Executive Officer | SSale | −1.73K | $49.41 | −$85.6K | −0.3%505.8K after | |
| Jun 24, 2024 (view filing) | Jun 20 | 4 days | Green PaulaSVP of Human Resources | SSale | −297 | $49.41 | −$14.7K | −0.3%90.3K after | |
| Jun 24, 2024 (view filing) | Jun 20 | 4 days | Cho DennisSee Remarks | SSale | −234 | $49.41 | −$11.6K | −0.3%79.8K after | |
| Jun 18, 2024 (view filing) | Jun 14 | 4 days | Cho DennisSee Remarks | SSale | −95 | $51.04 | −$4.85K | −0.1%80.1K after | |
| Jun 10, 2024 (view filing) | Jun 6 | 4 days | Cho DennisSee Remarks | SSale | −276 | $51.33 | −$14.2K | −0.3%80.2K after | |
| Jun 10, 2024 (view filing) | Jun 6 | 4 days | Green PaulaSVP of Human Resources | SSale | −918 | $51.33 | −$47.1K | −1.0%90.6K after | |
| Jun 10, 2024 (view filing) | Jun 6 | 4 days | Leproust Emily M.Chief Executive Officer | SSale | −2.41K | $51.33 | −$123.6K | −0.5%507.6K after | |
| Jun 10, 2024 (view filing) | Jun 6 | 4 days | Werner Robert F.Chief Accounting Officer | SSale | −242 | $51.33 | −$12.4K | −0.6%39.9K after | |
| May 28, 2024 (view filing) | May 23 | 5 days | Werner Robert F.Chief Accounting Officer | SSale | −3.36K | $42.32 | −$142.2K | −7.7%40.2K after | |
| May 7, 2024 (view filing) | May 3 | 4 days | Banyai WilliamSee Remark | SSale | −798 | $37.13 | −$29.6K | −0.2%345.2K after | |
| May 7, 2024 (view filing) | May 3 | 4 days | Cho DennisSee Remarks | SSale | −568 | $37.13 | −$21.1K | −0.7%80.4K after | |
| May 7, 2024 (view filing) | May 3 | 4 days | Green PaulaSVP of Human Resources | SSale | −910 | $37.13 | −$33.8K | −1.0%91.5K after | |
| May 7, 2024 (view filing) | May 3 | 4 days | Leproust Emily M.Chief Executive Officer | SSale | −4.16K | $37.13 | −$154.6K | −0.8%510.0K after | |
| May 7, 2024 (view filing) | May 3 | 4 days | Werner Robert F.Chief Accounting Officer | SSale | −132 | $37.13 | −$4.90K | −0.3%43.5K after | |
| May 7, 2024 (view filing) | May 3 | 4 days | Finn Patrick JohnPresident and COO | SSale | −2.31K | $37.13 | −$85.8K | −1.3%173.9K after | |
| Apr 25, 2024 (view filing) | Apr 23 | 2 days | Finn Patrick JohnPresident and COO | SSale | −2.17K | $30.12 | −$65.5K | −1.2%176.2K after | |
| Apr 11, 2024 (view filing) | Apr 9 | 2 days | Laponis AdamChief Financial Officer | SSale | −556 | $33.16 | −$18.4K | −0.7%74.4K after | |
| Apr 4, 2024 (view filing) | Apr 2 | 2 days | Banyai WilliamSee Remark | SSale | −327 | $32.74 | −$10.7K | −0.1%346.0K after | |
| Apr 4, 2024 (view filing) | Apr 2 | 2 days | Finn Patrick JohnPresident and COO | SSale | −492 | $32.74 | −$16.1K | −0.3%178.4K after | |
| Apr 4, 2024 (view filing) | Apr 2 | 2 days | Cho DennisSee Remarks | SSale | −129 | $32.74 | −$4.22K | −0.2%81.0K after | |
| Apr 4, 2024 (view filing) | Apr 2 | 2 days | Green PaulaSVP of Human Resources | SSale | −229 | $32.74 | −$7.50K | −0.2%92.4K after | |
| Apr 4, 2024 (view filing) | Apr 2 | 2 days | Leproust Emily M.Chief Executive Officer | SSale | −1.13K | $32.74 | −$37.1K | −0.2%514.1K after | |
| Mar 22, 2024 (view filing) | Mar 20 | 2 days | Cho DennisSee Remarks | SSale | −230 | $33.52 | −$7.71K | −0.3%81.1K after | |
| Mar 22, 2024 (view filing) | Mar 20 | 2 days | Banyai WilliamSee Remark | SSale | −442 | $33.52 | −$14.8K | −0.1%346.3K after | |
| Mar 22, 2024 (view filing) | Mar 20 | 2 days | Green PaulaSVP of Human Resources | SSale | −200 | $33.52 | −$6.70K | −0.2%92.7K after | |
| Mar 22, 2024 (view filing) | Mar 20 | 2 days | Leproust Emily M.Chief Executive Officer | SSale | −1.13K | $33.52 | −$37.8K | −0.2%515.3K after | |
| Mar 18, 2024 (view filing) | Mar 14 | 4 days | Cho DennisSee Remarks | SSale | −93 | $34.60 | −$3.22K | −0.1%81.4K after | |
| Mar 8, 2024 (view filing) | Mar 6 | 2 days | Cho DennisSee Remarks | SSale | −272 | $37.43 | −$10.2K | −0.3%81.5K after | |
| Mar 8, 2024 (view filing) | Mar 6 | 2 days | Werner Robert F.Chief Accounting Officer | SSale | −181 | $37.43 | −$6.77K | −0.4%43.7K after | |
| Mar 8, 2024 (view filing) | Mar 6 | 2 days | Leproust Emily M.Chief Executive Officer | SSale | −1.49K | $37.43 | −$55.7K | −0.3%516.4K after | |
| Mar 8, 2024 (view filing) | Mar 6 | 2 days | Green PaulaSVP of Human Resources | SSale | −600 | $37.43 | −$22.5K | −0.6%92.8K after | |
| Mar 8, 2024 (view filing) | Mar 6 | 2 days | Banyai WilliamSee Remark | SSale | −549 | $37.43 | −$20.5K | −0.2%346.8K after | |
| Feb 9, 2024 (view filing) | Feb 8 | 1 day | Chess RobertDirector | SSale | −4.11K | $34.98 | −$143.8K | −6.0%64.2K after |