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 |
|---|---|---|---|---|---|---|
| 2026-08-12 | Leproust Emily M. Chief Executive Officer | Sale 10b5-1 | −19,952 | $125.08 | $2.5M | 818,938 |
| 2026-08-12 | Leproust Emily M. Chief Executive Officer | Option exercise · Employee Stock Option (right to buy) 10b5-1 | −19,952 | 133,269 | ||
| 2026-08-10 | Leproust Emily M. Chief Executive Officer | Option exercise 10b5-1 | +113,318 | $26.66 | $3.0M | 932,256 |
| 2026-08-10 | Leproust Emily M. Chief Executive Officer | Sale 10b5-1 | −113,318 | $125.16 | $14.2M | 818,938 |
| 2026-08-10 | Leproust Emily M. Chief Executive Officer | Option exercise · Employee Stock Option (right to buy) 10b5-1 | −113,318 | 153,221 | ||
| 2026-08-07 | CHESS ROBERT Director | Option exercise 10b5-1 | +18,417 | $11.89 | $219K | 39,501 |
| 2026-08-07 | CHESS ROBERT Director | Sale 10b5-1 | −18,417 | $110.89 | $2.0M | 21,084 |
| 2026-08-07 | CHESS ROBERT Director | Option exercise · Stock Option (right to buy) 10b5-1 | −18,417 | 0 | ||
| 2026-08-05 | Cho Dennis See Remarks | Sale 10b5-1 | −14,205 | $109.75 | $1.6M | 89,866 |
| 2026-08-03 | Finn Patrick John President and COO | Sale | −2,888 | $85.32 | $246K | 269,678 |
| 2026-08-03 | Green Paula SVP of Human Resources | Sale | −1,133 | $85.32 | $97K | 119,281 |
| 2026-08-03 | Leproust Emily M. Chief Executive Officer | Sale | −5,101 | $85.32 | $435K | 818,938 |
| 2026-08-03 | WERNER ROBERT F. Chief Accounting Officer | Sale | −167 | $85.32 | $14K | 46,160 |
| 2026-08-03 | Cho Dennis See Remarks | Sale | −1,070 | $85.32 | $91K | 104,071 |
| 2026-07-23 | Finn Patrick John President and COO | Sale | −2,238 | $93.89 | $210K | 272,566 |
| 2026-07-09 | Laponis Adam Chief Financial Officer | Sale | −2,399 | $94.33 | $226K | 110,276 |
| 2026-06-25 | Leproust Emily M. Chief Executive Officer | Sale 10b5-1 | −18,880 | $95.00 | $1.8M | 824,039 |
| 2026-06-24 | Cho Dennis See Remarks | Sale 10b5-1 | −14,205 | $89.75 | $1.3M | 105,141 |
| 2026-06-22 | Green Paula SVP of Human Resources | Sale | −291 | $87.32 | $25K | 120,414 |
| 2026-06-22 | Cho Dennis See Remarks | Sale | −346 | $87.32 | $30K | 119,346 |
Page 5 of 10 · 194 trades