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 |
|---|---|---|---|---|---|---|
| 2026-05-04 | Leproust Emily M. Chief Executive Officer | Sale | −5,127 | $57.15 | $293K | 853,760 |
| 2026-05-04 | Finn Patrick John President and COO | Sale | −2,844 | $57.15 | $163K | 278,964 |
| 2026-05-04 | Green Paula SVP of Human Resources | Sale | −1,116 | $57.15 | $64K | 122,988 |
| 2026-05-04 | WERNER ROBERT F. Chief Accounting Officer | Sale | −164 | $57.15 | $9K | 54,635 |
| 2026-04-27 | Starovasnik Melissa A. Director | Sale 10b5-1 | −500 | $61.83 | $31K | 25,222 |
| 2026-04-23 | Finn Patrick John President and COO | Sale | −2,321 | $60.76 | $141K | 281,808 |
| 2026-04-22 | Leproust Emily M. Chief Executive Officer | Option exercise 10b5-1 | +8,061 | $8.82 | $71K | 866,948 |
| 2026-04-22 | Leproust Emily M. Chief Executive Officer | Sale 10b5-1 | −7,910 | $65.28 | $516K | 859,038 |
| 2026-04-22 | Leproust Emily M. Chief Executive Officer | Sale 10b5-1 | −151 | $66.00 | $10K | 858,887 |
| 2026-04-22 | Leproust Emily M. Chief Executive Officer | Option exercise · Employee Stock Option (right to buy) 10b5-1 | +8,061 | 141,208 | ||
| 2026-04-21 | Leproust Emily M. Chief Executive Officer | Option exercise 10b5-1 | +1,610 | $8.82 | $14K | 860,497 |
| 2026-04-21 | Leproust Emily M. Chief Executive Officer | Sale 10b5-1 | −1,610 | $65.01 | $105K | 858,887 |
| 2026-04-21 | Leproust Emily M. Chief Executive Officer | Option exercise · Employee Stock Option (right to buy) 10b5-1 | +1,610 | 149,269 | ||
| 2026-04-17 | Laponis Adam Chief Financial Officer | Sale 10b5-1 | −4,000 | $60.00 | $240K | 118,694 |
| 2026-04-14 | Laponis Adam Chief Financial Officer | Sale 10b5-1 | −3,000 | $55.00 | $165K | 122,694 |
| 2026-04-09 | Laponis Adam Chief Financial Officer | Sale | −2,597 | $49.89 | $130K | 125,694 |
| 2026-04-01 | Starovasnik Melissa A. Director | Sale 10b5-1 | −1,000 | $51.00 | $51K | 25,722 |
| 2026-03-20 | Cho Dennis See Remarks | Sale | −354 | $43.79 | $16K | 137,903 |
| 2026-03-20 | Green Paula SVP of Human Resources | Sale | −297 | $43.79 | $13K | 124,104 |
| 2026-03-20 | Leproust Emily M. Chief Executive Officer | Sale | −1,742 | $43.79 | $76K | 858,887 |
Page 8 of 10 · 194 trades