Twist Bioscience Corp
TWST
83 insider filings · Latest: Aug 12, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| Jun 8, 2026 | Jun 8 9:16 PM | WERNER ROBERT F. | Proposed Sale | 1,127 | $69.07 | $77.8K | — | View → |
| Jun 8, 2026 | Jun 8 8:49 PM | Cho Dennis | Proposed Sale | 402 | $69.84 | $28.1K | — | View → |
| Jun 8, 2026 | Jun 8 8:16 PM | WERNER ROBERT F. | Proposed Sale | 232 | $69.84 | $16.2K | — | View → |
| Jun 8, 2026 | Jun 8 7:54 PM | Green Paula | Proposed Sale | 884 | $69.84 | $61.7K | — | View → |
| Jun 8, 2026 | Jun 8 7:47 PM | Leproust Emily M. | Proposed Sale | 2,265 | $69.84 | $158.2K | — | View → |
| May 29, 2026 | Jun 2 8:05 PM | Dennis ChoSenior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 14,205 | $69.75 | $990.8K | 120,094(D) | View → |
| May 29, 2026 | Jun 2 8:05 PM | Adam LaponisChief Financial Officer | Sale | 4,000 | $70.00 | $280.0K | 112,675(D) | View → |
| May 28, 2026 | Jun 1 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Sale | 16,470 | $67.91 | $1.1M | 846,872(D) | View → |
| May 28, 2026 | Jun 1 8:05 PM | Melissa A. StarovasnikDirector | Sale | 2,500 | $68.00 | $170.0K | 22,222(D) | View → |
| May 29, 2026 | May 29 5:58 PM | Cho Dennis | Proposed Sale | 14,205 | $69.75 | $990.8K | — | View → |
| May 29, 2026 | May 29 5:49 PM | Laponis Adam | Proposed Sale | 4,000 | $70.00 | $280.0K | — | View → |
| May 28, 2026 | May 28 8:21 PM | Leproust Emily M. | Proposed Sale | 16,470 | $67.91 | $1.1M | — | View → |
| May 26, 2026 | May 28 8:05 PM | Melissa A. StarovasnikDirector | Sale | 500 | $61.04 | $30.5K | 24,722(D) | View → |
| May 27, 2026 | May 28 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Sale | 25,017 | $65.29 | $1.6M | 846,872(D) | View → |
| May 26, 2026 | May 28 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Sale | 24,282 | $65.08 | $1.6M | 846,872(D) | View → |
| May 26, 2026 | May 28 8:05 PM | Robert F. WernerChief Accounting Officer | Sale | 800 | $62.48 | $50.0K | 48,186(D) | View → |
| May 28, 2026 | May 28 3:50 PM | Starovasnik Melissa A. | Proposed Sale | 2,500 | $68.00 | $170.0K | — | View → |
| May 27, 2026 | May 27 8:26 PM | Leproust Emily M. | Proposed Sale | 25,017 | $65.29 | $1.6M | — | View → |
| May 26, 2026 | May 26 8:15 PM | Leproust Emily M. | Proposed Sale | 24,282 | $65.08 | $1.6M | — | View → |
| May 21, 2026 | May 26 8:05 PM | Paula GreenSVP of Human Resources | Sale | 1,399 | $53.26 | $74.5K | 121,589(D) | View → |
Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| Aug 12, 2026 | Aug 14 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Option Exercise | 19,952 | $26.66 | 133,269(D) | View → |
| Aug 10, 2026 | Aug 12 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Option Exercise | 113,318 | $26.66 | 153,221(D) | View → |
| Aug 7, 2026 | Aug 11 8:05 PM | Robert ChessDirector | Option Exercise | 18,417 | $11.89 | 0(D) | View → |
| Jun 15, 2026 | Jun 17 8:05 PM | Paula GreenSVP of Human Resources | Option Exercise | 26,137 | $23.33 | 0(D) | View → |
| May 28, 2026 | Jun 1 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Option Exercise | 16,470 | $8.82 | 75,439(D) | View → |
| May 27, 2026 | May 28 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Option Exercise | 25,017 | $8.82 | 91,909(D) | View → |
| May 26, 2026 | May 28 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Option Exercise | 24,282 | $8.82 | 116,926(D) | View → |
| May 12, 2026 | May 14 8:05 PM | Jan JohannessenDirector | Option Exercise | 12,000 | $14.00 | 10,304(D) | View → |
| Apr 22, 2026 | Apr 23 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Option Exercise | 8,061 | $8.82 | 141,208(D) | View → |
| Apr 21, 2026 | Apr 23 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Option Exercise | 1,610 | $8.82 | 149,269(D) | View → |
| Mar 17, 2026 | Mar 19 8:05 PM | Robert ChessDirector | Option Exercise | 10,000 | $11.89 | 18,417(D) | View → |
| Feb 17, 2026 | Feb 19 9:05 PM | Patrick John FinnPresident and COO | Option Exercise | 50,505 | $26.66 | 0(D) | View → |
| Feb 13, 2026 | Feb 17 9:25 PM | Patrick John FinnPresident and COO | Option Exercise | 1,212 | $26.66 | 18,052(D) | View → |
| Feb 12, 2026 | Feb 17 9:25 PM | Patrick John FinnPresident and COO | Option Exercise | 2,500 | $26.66 | 18,705(D) | View → |