Twist Bioscience Corp (TWST)
$143.26-$9.84 (-6.43%) Today
Patrick John Finn - OfficerTwist Bioscience Corp is a synthetic biology company that has developed a disruptive DNA synthesis platform to industrialize the engineering of biology. The company's proprietary semiconductor-based manufacturing process synthesizes DNA on silicon rather than traditional plastic plates, enabling the production of high-quality synthetic DNA faster, more affordably, and at scale. This platform overcomes conventional inefficiencies, supports cost-effective, high-throughput synthesis, and allows researchers to accelerate innovation. Geographically, the company operates across the Americas, EMEA, and APAC, deriving the majority of its revenue from the Americas.
https://www.twistbioscience.comSEC filings for TWST on EDGAR
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 46 | 419,051 | $48.66M |
| Option exercise | 10 | 402,358 | |
| Bona-fide gift | 1 | 500 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
202 Form 4 filings on record, the earliest from Oct 4, 2024, newest first. Filing history page 3 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 1,742 | $43.79 | $76K | |
 Robert Chess | Option exercise | Common Stock | 10,000 | $11.89 | $119K | |
| Robert Chess | Open-market sale | Common Stock | 10,000 | $47.00 | $470K | |
| Robert Chess | Option exercise | Stock Option (right to buy) | 10,000 | $0.00 | - | |
 Robert F. Werner - Officer | Open-market sale | Common Stock | 246 | $46.43 | $11K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 425 | $46.43 | $20K | |
| Paula Green - Officer | Open-market sale | Common Stock | 935 | $46.43 | $43K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 2,423 | $46.43 | $112K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 4,294 | $46.71 | $201K | |
| Robert F. Werner - Officer | Open-market sale | Common Stock | 1,693 | $46.71 | $79K | |
 Adam Laponis - Officer | Open-market sale | Common Stock | 2,085 | $46.71 | $97K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 7,205 | $46.71 | $337K | |
| Paula Green - Officer | Open-market sale | Common Stock | 1,465 | $46.71 | $68K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 844 | $46.71 | $39K | |
| Paula Green - Officer | Open-market sale | Common Stock | 39,404 | $52.40 | $2.06M | |
| Patrick John Finn - Officer | Option exercise | Common Stock | 18,205 | $23.33 | $425K | |
| Patrick John Finn - Officer | Option exercise | Common Stock | 32,300 | $26.66 | $861K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 21,858 | $50.32 | $1.10M | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 16,616 | $51.42 | $854K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 26,952 | $52.69 | $1.42M | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 3,541 | $53.11 | $188K | |
| Patrick John Finn - Officer | Option exercise | Stock Option (right to buy) | 32,300 | $0.00 | - | |
| Patrick John Finn - Officer | Option exercise | Stock Option (right to buy) | 18,205 | $0.00 | - | |
| Robert Chess | Open-market sale | Common Stock | 2,184 | $48.26 | $105K | |
| Patrick John Finn - Officer | Option exercise | Common Stock | 1,000 | $23.33 | $23K | |
| Patrick John Finn - Officer | Option exercise | Common Stock | 1,500 | $26.66 | $40K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 3,500 | $50.23 | $176K | |
| Patrick John Finn - Officer | Option exercise | Common Stock | 500 | $23.33 | $12K | |
| Patrick John Finn - Officer | Option exercise | Common Stock | 712 | $26.66 | $19K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 1,750 | $50.04 | $88K | |
| Patrick John Finn - Officer | Option exercise | Stock Option (right to buy) | 1,500 | $0.00 | - | |
| Patrick John Finn - Officer | Option exercise | Stock Option (right to buy) | 1,000 | $0.00 | - | |
| Patrick John Finn - Officer | Option exercise | Stock Option (right to buy) | 712 | $0.00 | - | |
| Patrick John Finn - Officer | Option exercise | Stock Option (right to buy) | 500 | $0.00 | - | |
| Adam Laponis - Officer | Open-market sale | Common Stock | 7,000 | $50.00 | $350K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 5,000 | $49.93 | $250K | |
| Robert F. Werner - Officer | Gift | Common Stock | 2,000 | $0.00 | - | |
| Keith Crandell | Grant or award | Common Stock | 5,095 | $0.00 | - | |
| Melissa A. Starovasnik | Grant or award | Common Stock | 5,095 | $0.00 | - | |
| Robert P. Ragusa | Grant or award | Common Stock | 5,095 | $0.00 | - | |
| Robert Chess | Grant or award | Common Stock | 5,095 | $0.00 | - | |
| Nelson Chan | Grant or award | Common Stock | 5,095 | $0.00 | - | |
| Katryn Blake | Grant or award | Common Stock | 5,095 | $0.00 | - | |
| Jan Johannessen | Grant or award | Common Stock | 5,095 | $0.00 | - | |
| Jan Johannessen | Open-market sale | Common Stock | 2,200 | $47.91 | $105K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 2,705 | $46.58 | $126K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 1,099 | $46.58 | $51K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 5,001 | $46.58 | $233K | |
| Robert F. Werner - Officer | Open-market sale | Common Stock | 175 | $46.58 | $8K | |
| Robert F. Werner - Officer | Open-market sale | Common Stock | 7,000 | $45.65 | $320K |
This is as far as the anonymous view goes. Create a free account for all 202 TWST filings on record.
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Leproust Emily M. | Officer, Director | 41,570 | $6.32M | View on EDGAR | |
| WERNER ROBERT F. | Officer | 854 | $120K | View on EDGAR | |
| Green Paula | Officer | 1,360 | $189K | View on EDGAR |
Twist Bioscience Corp (TWST) had 33 insider filings in the last 90 days, with the most recent on 2026-08-27. The full record for TWST runs to 202 Form 4 filings, the earliest from 2024-10-04. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of TWST were filed in the last 90 days.
46 insider sales of TWST were filed in the last 90 days, totaling $48.66M.
This page tracks TWST Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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