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 |
|---|---|---|---|---|---|---|---|---|
| Apr 9, 2026 | Apr 9 7:21 PM | Laponis Adam | Proposed Sale | 2,597 | $49.89 | $129.6K | — | View → |
| Apr 1, 2026 | Apr 3 8:00 PM | Melissa A. StarovasnikDirector | Sale | 1,000 | $51.00 | $51.0K | 25,722(D) | View → |
| Apr 1, 2026 | Apr 1 5:12 PM | Starovasnik Melissa A. | Proposed Sale | 1,000 | $51.00 | $51.0K | — | View → |
| Mar 20, 2026 | Mar 24 8:05 PM | Dennis ChoSenior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 354 | $43.79 | $15.5K | 137,903(D) | View → |
| Mar 20, 2026 | Mar 24 8:05 PM | Paula GreenSVP of Human Resources | Sale | 297 | $43.79 | $13.0K | 124,104(D) | View → |
| Mar 20, 2026 | Mar 24 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Sale | 1,742 | $43.79 | $76.3K | 858,887(D) | View → |
| Mar 20, 2026 | Mar 20 7:40 PM | Leproust Emily M. | Proposed Sale | 1,742 | $43.79 | $76.3K | — | View → |
| Mar 20, 2026 | Mar 20 7:38 PM | Cho Dennis | Proposed Sale | 354 | $43.79 | $15.5K | — | View → |
| Mar 20, 2026 | Mar 20 7:37 PM | Green Paula | Proposed Sale | 297 | $43.79 | $13.0K | — | View → |
| Mar 17, 2026 | Mar 19 8:05 PM | Robert ChessDirector | Sale | 10,000 | $47.00 | $470.0K | 21,084(D) | View → |
| Mar 17, 2026 | Mar 17 6:17 PM | CHESS ROBERT | Proposed Sale | 10,000 | $47.00 | $470.0K | — | View → |
| Mar 6, 2026 | Mar 10 8:06 PM | Robert F. WernerChief Accounting Officer | Sale | 246 | $46.43 | $11.4K | 54,799(D) | View → |
| Mar 6, 2026 | Mar 10 8:05 PM | Dennis ChoSenior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 425 | $46.43 | $19.7K | 138,257(D) | View → |
| Mar 6, 2026 | Mar 10 8:05 PM | Paula GreenSVP of Human Resources | Sale | 935 | $46.43 | $43.4K | 124,401(D) | View → |
| Mar 6, 2026 | Mar 10 8:05 PM | Emily M. LeproustDirector, Chief Executive Officer | Sale | 2,423 | $46.43 | $112.5K | 860,629(D) | View → |
| Mar 6, 2026 | Mar 6 8:42 PM | WERNER ROBERT F. | Proposed Sale | 246 | $46.43 | $11.4K | — | View → |
| Mar 6, 2026 | Mar 6 8:19 PM | Green Paula | Proposed Sale | 935 | $46.43 | $43.4K | — | View → |
| Mar 6, 2026 | Mar 6 8:13 PM | Cho Dennis | Proposed Sale | 425 | $46.43 | $19.7K | — | View → |
| Mar 6, 2026 | Mar 6 8:10 PM | Leproust Emily M. | Proposed Sale | 2,423 | $46.43 | $112.5K | — | View → |
| Feb 23, 2026 | Feb 25 9:05 PM | Patrick John FinnPresident and COO | Sale | 4,294 | $46.71 | $200.6K | 284,129(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 → |