Twist Bioscience Corp Insider Trading Activity
Every SEC Form 4 insider transaction reported for Twist Bioscience Corp (TWST), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are TWST insiders buying or selling?
In the last 12 months, Twist Bioscience Corp insiders reported 0 open-market purchases ($0) and 131 sales ($149.1M) — net selling of $149.1M. Since November 2018, Trabud has recorded 518 Form 4 filings for TWST: 4 buys ($2.5M) and 514 sells ($365.2M).
Source: SEC EDGAR Form 4
What stands out
- No Twist Bioscience Corp insider made an open-market purchase in the last 12 months; the 131 reported open-market sales totaled $149.1M.
Key Statistics (November 2018 – Oct 13, 2026)
Total Form 4 filings
518
SEC EDGAR
Insider filers
19
Insider buys (4)
$2.5M
Insider sells (514)
$365.2M
Insider sentiment
Net sellingNet insider flow of $362.7M in net selling since November 2018, and $149.1M in net selling over the last 12 months.
Recent TWST insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Oct 13, 2026 | Adam Laponis | Chief Financial Officer | Sale | 2.5K | $156.30 | $384.8K | SEC ↗ |
| Oct 7, 2026 | Emily M. Leproust | Chief Executive Officer | Sale | 4.5K | $202.15 | $919.4K | SEC ↗ |
| Oct 5, 2026 | Adam Laponis | Chief Financial Officer | Sale | 8.1K | $188.88 | $1.5M | SEC ↗ |
| Oct 5, 2026 | Paula Green | SVP of Human Resources | Sale | 10.1K | $188.88 | $1.9M | SEC ↗ |
| Oct 5, 2026 | Patrick John Finn | President and COO | Sale | 25.7K | $188.88 | $4.9M | SEC ↗ |
| Oct 5, 2026 | Emily M. Leproust | Chief Executive Officer | Sale | 46.4K | $189.04 | $8.8M | SEC ↗ |
| Oct 5, 2026 | Dennis Cho | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 9.5K | $188.88 | $1.8M | SEC ↗ |
| Oct 5, 2026 | Robert F. Werner | Chief Accounting Officer | Sale | 1.5K | $188.88 | $279.9K | SEC ↗ |
| Sep 25, 2026 | Emily M. Leproust | Chief Executive Officer | Sale | 5.2K | $177.38 | $922.9K | SEC ↗ |
| Sep 23, 2026 | Dennis Cho | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 348 | $165.49 | $57.6K | SEC ↗ |
| Sep 23, 2026 | Paula Green | SVP of Human Resources | Sale | 294 | $165.49 | $48.7K | SEC ↗ |
| Sep 23, 2026 | Emily M. Leproust | Chief Executive Officer | Sale | 1.7K | $165.49 | $279.2K | SEC ↗ |
| Sep 21, 2026 | Emily M. Leproust | Chief Executive Officer | Sale | 356.5K | $157.99 | $56.3M | SEC ↗ |
| Sep 10, 2026 | Dennis Cho | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 412 | $122.62 | $50.5K | SEC ↗ |
| Sep 10, 2026 | Paula Green | SVP of Human Resources | Sale | 907 | $122.62 | $111.2K | SEC ↗ |
| Sep 10, 2026 | Emily M. Leproust | Chief Executive Officer | Sale | 2.3K | $122.62 | $282.3K | SEC ↗ |
| Sep 10, 2026 | Robert F. Werner | Chief Accounting Officer | Sale | 238 | $122.62 | $29.2K | SEC ↗ |
| Aug 27, 2026 | Emily M. Leproust | Chief Executive Officer | Sale | 41.6K | $151.98 | $6.3M | SEC ↗ |
| Aug 25, 2026 | Dennis Cho | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 1.6K | $139.07 | $222.2K | SEC ↗ |
| Aug 25, 2026 | Patrick John Finn | President and COO | Sale | 4.0K | $139.07 | $562.7K | SEC ↗ |
| Aug 25, 2026 | Paula Green | SVP of Human Resources | Sale | 1.4K | $139.07 | $189.1K | SEC ↗ |
| Aug 25, 2026 | Adam Laponis | Chief Financial Officer | Sale | 2.0K | $139.07 | $273.3K | SEC ↗ |
| Aug 25, 2026 | Emily M. Leproust | Chief Executive Officer | Sale | 6.6K | $139.07 | $923.3K | SEC ↗ |
| Aug 25, 2026 | Robert F. Werner | Chief Accounting Officer | Sale | 1.5K | $140.02 | $213.3K | SEC ↗ |
| Aug 21, 2026 | Dennis Cho | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 14.2K | $129.75 | $1.8M | SEC ↗ |
Showing the 25 most recent of 518 Form 4 filings for Twist Bioscience Corp.
Most active TWST insiders
- Emily M. Leproust96 filings
- Patrick John Finn76 filings
- Dennis Cho66 filings
- Paula Green64 filings
- William Banyai44 filings
Ask anything about TWST insider activity
Use Trabud's AI agent to query Twist Bioscience Corp's Form 4 history in plain English — "Show me TWST CEO purchases this year" or compare it against any other ticker.
Open the AI agentTWST insider trading FAQ
Are Twist Bioscience Corp insiders buying or selling?
In the last 12 months, Twist Bioscience Corp insiders reported 0 open-market purchases ($0) and 131 sales ($149.1M) — net selling of $149.1M. Since November 2018, Trabud has recorded 518 Form 4 filings for TWST: 4 buys ($2.5M) and 514 sells ($365.2M). Over the full record that is net selling of $362.7M.
How many insiders trade TWST stock?
19 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for Twist Bioscience Corp. The most recent filing was accepted on Oct 13, 2026.
Where does Trabud get TWST insider trading data?
All TWST insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.