CIK 0001581280 · Large accelerated filer
Twist Bioscience Corp
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- TWST
- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- FY end
- Sep 30
- Incorporated
- DE
- Entity type
- operating
- EIN
- 462058888
- Phone
- 800-719-0671
- Business address
- 681 GATEWAY BLVD., SOUTH SAN FRANCISCO, CA, 94080
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $99,863,292
- in 32 filings, $84.3M under 10b5-1 plans
Net −$99,863,292. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-05-27 | Leproust Emily M. Chief Executive Officer | Option exercise 10b5-1 | +25,017 | $8.82 | $221K | 871,889 |
| 2026-05-27 | Leproust Emily M. Chief Executive Officer | Sale 10b5-1 | −23,752 | $65.24 | $1.5M | 848,137 |
| 2026-05-27 | Leproust Emily M. Chief Executive Officer | Sale 10b5-1 | −1,265 | $66.28 | $84K | 846,872 |
| 2026-05-27 | Leproust Emily M. Chief Executive Officer | Option exercise · Employee Stock Option (right to buy) 10b5-1 | +25,017 | 91,909 | ||
| 2026-05-26 | Leproust Emily M. Chief Executive Officer | Option exercise 10b5-1 | +24,282 | $8.82 | $214K | 871,154 |
| 2026-05-26 | Leproust Emily M. Chief Executive Officer | Sale 10b5-1 | −24,282 | $65.08 | $1.6M | 846,872 |
| 2026-05-26 | Leproust Emily M. Chief Executive Officer | Option exercise · Employee Stock Option (right to buy) 10b5-1 | +24,282 | 116,926 | ||
| 2026-05-26 | WERNER ROBERT F. Chief Accounting Officer | Sale | −800 | $62.48 | $50K | 48,186 |
| 2026-05-26 | Starovasnik Melissa A. Director | Sale 10b5-1 | −500 | $61.04 | $31K | 24,722 |
| 2026-05-21 | WERNER ROBERT F. Chief Accounting Officer | Sale | −688 | $53.26 | $37K | 48,986 |
| 2026-05-21 | Leproust Emily M. Chief Executive Officer | Sale | −6,888 | $53.26 | $367K | 846,872 |
| 2026-05-21 | Laponis Adam Chief Financial Officer | Sale | −2,019 | $53.26 | $108K | 116,675 |
| 2026-05-21 | Green Paula SVP of Human Resources | Sale | −1,399 | $53.26 | $75K | 121,589 |
| 2026-05-21 | Finn Patrick John President and COO | Sale | −4,160 | $53.26 | $222K | 274,804 |
| 2026-05-21 | Cho Dennis See Remarks | Sale | −1,642 | $53.26 | $87K | 134,299 |
| 2026-05-12 | JOHANNESSEN JAN Director | Option exercise | +12,000 | $14.00 | $168K | 29,754 |
| 2026-05-12 | JOHANNESSEN JAN Director | Sale | −12,000 | $56.12 | $673K | 17,754 |
| 2026-05-12 | JOHANNESSEN JAN Director | Option exercise · Employee Stock Option (right to buy) | +12,000 | 10,304 | ||
| 2026-05-08 | WERNER ROBERT F. Chief Accounting Officer | Sale | −4,961 | $56.88 | $282K | 49,674 |
| 2026-05-04 | Cho Dennis See Remarks | Sale | −1,962 | $57.15 | $112K | 135,941 |
Page 7 of 10 · 194 trades