Company profile
Twist Bioscience Corp Insider Trading
TWSTEvery SEC Form 4 insider trading filing for Twist Bioscience Corp (TWST) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Biological Products, (No Diagnostic Substances)
- CIK
- 0001581280
- Filings
- 447
- Insiders
- 17
- Last filing
- 2026-09-08
Activity summary
Recent insider activity is bearish. Over the last 30 days, insiders net sold $593K across 5 transactions.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Twist Bioscience Corp insiders were net sellers in every quarter shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $42.1M.
90 day insight
Over the last 90 days, Twist Bioscience Corp insiders bought $0 (2 transactions) and sold $4.5M (19 transactions).
- Most active insider: Emily M. Leproust with 15 transactions totaling $30.0M.
- Largest single sale: $14.2M by Emily M. Leproust on Aug 10, 2026.
- 50% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bearish — sales outpace buys.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 8, 2026 | Robert F. Werner | TWST | Sale | 238 | $122.62 | $29K |
| Sep 8, 2026 | Dennis Cho | TWST | Sale | 412 | $122.62 | $51K |
| Sep 8, 2026 | Emily M. Leproust | TWST | Sale | 2,302 | $122.62 | $282K |
| Sep 8, 2026 | Paula Green | TWST | Sale | 907 | $122.62 | $111K |
| Aug 25, 2026 | Emily M. Leproust | TWST | Sale10b5 | 6,412 | $152.75 | $979K |
45 more transactions hidden
Free account · No credit card required
Building something? Get API access →
Query this yourself
The same rows, over the API.
curl "https://api.form4api.com/v1/transactions?ticker=TWST" \
-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Twist Bioscience Corp as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →