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 1 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 12,648 | $150.56 | $1.90M | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 12,236 | $151.36 | $1.85M | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 6,412 | $152.75 | $979K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 9,181 | $153.93 | $1.41M | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 1,093 | $154.45 | $169K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 1,598 | $139.07 | $222K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 4,046 | $139.07 | $563K | |
| Paula Green - Officer | Open-market sale | Common Stock | 1,360 | $139.07 | $189K | |
 Adam Laponis - Officer | Open-market sale | Common Stock | 1,965 | $139.07 | $273K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 6,639 | $139.07 | $923K | |
 Robert F. Werner - Officer | Open-market sale | Common Stock | 669 | $139.07 | $93K | |
| Robert F. Werner - Officer | Open-market sale | Common Stock | 854 | $140.77 | $120K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 14,205 | $129.75 | $1.84M | |
| Patrick John Finn - Officer | Option exercise | Common Stock | 23,355 | $67.85 | $1.58M | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 33,354 | $115.90 | $3.87M | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 10,420 | $116.82 | $1.22M | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 8,868 | $117.70 | $1.04M | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 4,500 | $119.04 | $536K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 12,917 | $119.86 | $1.55M | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 6,296 | $121.01 | $762K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 2,000 | $122.58 | $245K | |
| Patrick John Finn - Officer | Option exercise | Stock Option (right to buy) | 23,355 | $0.00 | - | |
| Katryn Blake - Director | Open-market sale | Common Stock | 2,240 | $122.88 | $275K | |
| Emily M. Leproust - Officer | Option exercise | Common Stock | 19,952 | $26.66 | $532K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 19,952 | $125.08 | $2.50M | |
| Emily M. Leproust - Officer | Option exercise | Employee Stock Option (right to buy) | 19,952 | $0.00 | - | |
| Emily M. Leproust - Officer | Option exercise | Common Stock | 113,318 | $26.66 | $3.02M | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 113,318 | $125.16 | $14.18M | |
| Emily M. Leproust - Officer | Option exercise | Employee Stock Option (right to buy) | 113,318 | $0.00 | - | |
 Robert Chess - Director | Option exercise | Common Stock | 18,417 | $11.89 | $219K | |
| Robert Chess - Director | Open-market sale | Common Stock | 18,417 | $110.89 | $2.04M | |
| Robert Chess - Director | Option exercise | Stock Option (right to buy) | 18,417 | $0.00 | - | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 14,205 | $109.75 | $1.56M | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 2,888 | $85.32 | $246K | |
| Paula Green - Officer | Open-market sale | Common Stock | 1,133 | $85.32 | $97K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 5,101 | $85.32 | $435K | |
| Robert F. Werner - Officer | Open-market sale | Common Stock | 167 | $85.32 | $14K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 1,070 | $85.32 | $91K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 2,238 | $93.89 | $210K | |
| Adam Laponis - Officer | Open-market sale | Common Stock | 2,399 | $94.33 | $226K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 18,880 | $95.00 | $1.79M | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 14,205 | $89.75 | $1.27M | |
| Paula Green - Officer | Open-market sale | Common Stock | 291 | $87.32 | $25K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 346 | $87.32 | $30K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 1,688 | $87.32 | $147K | |
| Paula Green - Officer | Option exercise | Common Stock | 26,137 | $23.33 | $610K | |
| Paula Green - Officer | Open-market sale | Common Stock | 24,109 | $81.62 | $1.97M | |
| Paula Green - Officer | Open-market sale | Common Stock | 2,028 | $82.17 | $167K | |
| Paula Green - Officer | Option exercise | Employee Stock Option (right to buy) | 26,137 | $0.00 | - | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 402 | $69.84 | $28K | |
| Paula Green - Officer | Open-market sale | Common Stock | 884 | $69.84 | $62K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 2,265 | $69.84 | $158K |
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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