InsiderSenior Vice President, Chief Legal Officer & Corporate Secretary
Dennis Cho Insider Trading Activity
Every SEC Form 4 transaction reported by Dennis Cho, 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
Is Dennis Cho buying or selling?
Dennis Cho reported 1 open-market buys ($132.0K) and 65 sells ($9.9M) across 66 Form 4 filings at 1 company — a net selling position of $9.8M.
Source: SEC EDGAR Form 4
What stands out
- All 66 of Dennis Cho's Form 4 filings are for one company, Twist Bioscience Corp (TWST).
- The most recent Form 4 was accepted on Oct 5, 2026 (13 days ago).
- In the last 12 months: no open-market purchases and 23 sales ($8.8M).
- The largest open-market sale in the last 12 months was $1.8M of Twist Bioscience Corp (TWST) on Aug 21, 2026. SEC ↗
Key Statistics (as of Oct 5, 2026)
Total Form 4 filings
66
SEC EDGAR
Companies
1
Buys (1)
$132.0K
Sells (65)
$9.9M
Insider sentiment
Net sellingNet insider flow of $9.8M in net selling, filed between May 12, 2023 – Oct 5, 2026.
Companies Dennis Cho files for
| # | Company | Form 4 filings |
|---|---|---|
| 1 | TWSTTwist Bioscience Corp | 66 |
Recent Dennis Cho transactions
| Date | Ticker | Role | Type | Shares | Value | Filing |
|---|---|---|---|---|---|---|
| Oct 5, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 9.5K | $1.8M | SEC ↗ |
| Sep 23, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 348 | $57.6K | SEC ↗ |
| Sep 10, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 412 | $50.5K | SEC ↗ |
| Aug 25, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 1.6K | $222.2K | SEC ↗ |
| Aug 21, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 14.2K | $1.8M | SEC ↗ |
| Aug 7, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 14.2K | $1.6M | SEC ↗ |
| Aug 5, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 1.1K | $91.3K | SEC ↗ |
| Jun 26, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 14.2K | $1.3M | SEC ↗ |
| Jun 24, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 346 | $30.2K | SEC ↗ |
| Jun 10, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 402 | $28.1K | SEC ↗ |
| Jun 2, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 14.2K | $990.8K | SEC ↗ |
| May 26, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 1.6K | $87.4K | SEC ↗ |
| May 6, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 2.0K | $112.1K | SEC ↗ |
| Mar 24, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 354 | $15.5K | SEC ↗ |
| Mar 10, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 425 | $19.7K | SEC ↗ |
| Feb 25, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 844 | $39.4K | SEC ↗ |
| Feb 13, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 5.0K | $249.7K | SEC ↗ |
| Feb 5, 2026 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 1.1K | $51.2K | SEC ↗ |
| Dec 23, 2025 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 324 | $11.2K | SEC ↗ |
| Dec 10, 2025 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 398 | $13.1K | SEC ↗ |
| Nov 25, 2025 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 757 | $20.1K | SEC ↗ |
| Nov 5, 2025 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 1.0K | $32.7K | SEC ↗ |
| Nov 3, 2025 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 6.5K | $204.9K | SEC ↗ |
| Oct 8, 2025 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 3.9K | $124.8K | SEC ↗ |
| Oct 6, 2025 | TWST | Senior Vice President, Chief Legal Officer & Corporate Secretary | Sale | 124 | $3.6K | SEC ↗ |
Showing the 25 most recent filings of 66. Screen every filing.
Dennis Cho insider trading FAQ
Is Dennis Cho buying or selling?
Across 66 SEC Form 4 filings, Dennis Cho reported 1 open-market purchases totaling $132.0K and 65 sales totaling $9.9M — a net selling position of $9.8M.
Which companies does Dennis Cho file Form 4s for?
Dennis Cho has reported insider transactions at 1 company, most often Twist Bioscience Corp (TWST).
How far back does Dennis Cho's filing history go?
Trabud holds Dennis Cho's SEC Form 4 filings from May 12, 2023 – Oct 5, 2026, sourced directly from SEC EDGAR.
Where does Trabud get Dennis Cho's insider trading data?
Directly from SEC EDGAR Form 4 filings. Every transaction on this page is a real filing accepted by the SEC, updated as new filings arrive.
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