Twist Bioscience Corp (TWST) insider trading
Every open-market stock purchase and sale by Twist Bioscience Corp executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Insiders sold $31.6M over the last 12 months (104 sales). No open-market buys.
- Last insider buy: Dennis Cho (Insider), $132K, 3 years ago.
Last 12 months: insiders bought $0 (0 buys) and sold $31.6M (104 sales). Last close $70.04 on Jun 7, 2026.
Recent TWST insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Jun 25, 2026 | Emily M. Leproust (CEO) | Sold | $1.8M |
| Jun 24, 2026 | Dennis Cho (Insider) | Sold | $1.3M |
| Jun 22, 2026 | Emily M. Leproust (CEO) | Sold | $147K |
| Jun 22, 2026 | Dennis Cho (Insider) | Sold | $30.2K |
| Jun 22, 2026 | Paula Green (VP) | Sold | $25.4K |
| Jun 15, 2026 | Paula Green (VP) | Sold | $2M |
| Jun 15, 2026 | Paula Green (VP) | Sold | $167K |
| Jun 15, 2026 | Paula Green (VP) | Bought (not open market) | — |
| Jun 8, 2026 | Emily M. Leproust (CEO) | Sold | $158K |
| Jun 8, 2026 | Robert F. Werner (C-suite exec) | Sold | $77.8K |
| Jun 8, 2026 | Paula Green (VP) | Sold | $61.7K |
| Jun 8, 2026 | Dennis Cho (Insider) | Sold | $28.1K |
| Jun 8, 2026 | Robert F. Werner (C-suite exec) | Sold | $16.2K |
| Jun 8, 2026 | Robert F. Werner (C-suite exec) | Sold (not open market) | — |
| May 29, 2026 | Dennis Cho (Insider) | Sold | $991K |
| May 29, 2026 | Adam Laponis (CFO) | Sold | $280K |
| May 28, 2026 | Emily M. Leproust (CEO) | Sold | $518K |
| May 28, 2026 | Emily M. Leproust (CEO) | Sold | $444K |
| May 28, 2026 | Melissa A. Starovasnik (Insider) | Sold | $170K |
| May 28, 2026 | Emily M. Leproust (CEO) | Sold | $96.8K |
| May 28, 2026 | Emily M. Leproust (CEO) | Sold | $60.2K |
| May 28, 2026 | Emily M. Leproust (CEO) | Bought (not open market) | — |
| May 27, 2026 | Emily M. Leproust (CEO) | Sold | $1.5M |
| May 27, 2026 | Emily M. Leproust (CEO) | Sold | $83.8K |
| May 27, 2026 | Emily M. Leproust (CEO) | Bought (not open market) | — |
Who's trading TWST
- Emily M. Leproust, CEO: sold $10.8M (26 sales), last Jun 25, 2026
- Dennis Cho, Insider: sold $3.3M (18 sales), last Jun 24, 2026
- Paula Green, VP: sold $5.2M (18 sales), last Jun 22, 2026
- Robert F. Werner, C-suite exec: sold $1M (16 sales), last Jun 8, 2026
- Adam Laponis, CFO: sold $2.1M (14 sales), last May 29, 2026
- Melissa A. Starovasnik, Insider: sold $282K (4 sales), last May 28, 2026
- Patrick John Finn, COO: sold $7.2M (19 sales), last May 21, 2026
- Jan Johannessen, Insider: sold $953K (3 sales), last May 12, 2026
- Robert Chess, Insider: sold $575K (2 sales), last Mar 17, 2026
- Katryn Blake, Insider: other filings, last Feb 5, 2026
- Nelson Chan, Insider: other filings, last Feb 5, 2026
- Robert P Ragusa, Insider: other filings, last Feb 5, 2026
- Keith Crandell, Insider: other filings, last Feb 5, 2026
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