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 2 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
 Robert F. Werner - Officer | Open-market sale | Common Stock | 1,127 | $69.07 | $78K | |
| Robert F. Werner - Officer | Open-market sale | Common Stock | 232 | $69.84 | $16K | |
| Robert F. Werner - Officer | Gift | Common Stock | 500 | $0.00 | - | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 14,205 | $69.75 | $991K | |
 Adam Laponis - Officer | Open-market sale | Common Stock | 4,000 | $70.00 | $280K | |
| Emily M. Leproust - Officer | Option exercise | Common Stock | 16,470 | $8.82 | $145K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 1,482 | $65.33 | $97K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 900 | $66.85 | $60K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 7,623 | $67.95 | $518K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 6,465 | $68.61 | $444K | |
| Emily M. Leproust - Officer | Option exercise | Employee Stock Option (right to buy) | 16,470 | $0.00 | - | |
| Melissa A. Starovasnik | Open-market sale | Common Stock | 2,500 | $68.00 | $170K | |
| Melissa A. Starovasnik | Open-market sale | Common Stock | 500 | $61.04 | $31K | |
| Emily M. Leproust - Officer | Option exercise | Employee Stock Option (right to buy) | 25,017 | $0.00 | - | |
| Emily M. Leproust - Officer | Option exercise | Common Stock | 24,282 | $8.82 | $214K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 24,282 | $65.08 | $1.58M | |
| Emily M. Leproust - Officer | Option exercise | Common Stock | 25,017 | $8.82 | $221K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 23,752 | $65.24 | $1.55M | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 1,265 | $66.28 | $84K | |
| Emily M. Leproust - Officer | Option exercise | Employee Stock Option (right to buy) | 24,282 | $0.00 | - | |
| Robert F. Werner - Officer | Open-market sale | Common Stock | 800 | $62.48 | $50K | |
| Paula Green - Officer | Open-market sale | Common Stock | 1,399 | $53.26 | $75K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 4,160 | $53.26 | $222K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 1,642 | $53.26 | $87K | |
| Robert F. Werner - Officer | Open-market sale | Common Stock | 688 | $53.26 | $37K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 6,888 | $53.26 | $367K | |
| Adam Laponis - Officer | Open-market sale | Common Stock | 2,019 | $53.26 | $108K | |
| Jan Johannessen | Option exercise | Common Stock | 12,000 | $14.00 | $168K | |
| Jan Johannessen | Open-market sale | Common Stock | 12,000 | $56.12 | $673K | |
| Jan Johannessen | Option exercise | Employee Stock Option (right to buy) | 12,000 | $0.00 | - | |
| Robert F. Werner - Officer | Open-market sale | Common Stock | 4,961 | $56.88 | $282K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 1,962 | $57.15 | $112K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 5,127 | $57.15 | $293K | |
| Paula Green - Officer | Open-market sale | Common Stock | 1,116 | $57.15 | $64K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 2,844 | $57.15 | $163K | |
| Robert F. Werner - Officer | Open-market sale | Common Stock | 164 | $57.15 | $9K | |
| Melissa A. Starovasnik | Open-market sale | Common Stock | 500 | $61.83 | $31K | |
| Patrick John Finn - Officer | Open-market sale | Common Stock | 2,321 | $60.76 | $141K | |
| Emily M. Leproust - Officer | Option exercise | Common Stock | 1,610 | $8.82 | $14K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 1,610 | $65.01 | $105K | |
| Emily M. Leproust - Officer | Option exercise | Common Stock | 8,061 | $8.82 | $71K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 7,910 | $65.28 | $516K | |
| Emily M. Leproust - Officer | Open-market sale | Common Stock | 151 | $66.00 | $10K | |
| Emily M. Leproust - Officer | Option exercise | Employee Stock Option (right to buy) | 1,610 | $0.00 | - | |
| Emily M. Leproust - Officer | Option exercise | Employee Stock Option (right to buy) | 8,061 | $0.00 | - | |
| Adam Laponis - Officer | Open-market sale | Common Stock | 4,000 | $60.00 | $240K | |
| Adam Laponis - Officer | Open-market sale | Common Stock | 3,000 | $55.00 | $165K | |
| Adam Laponis - Officer | Open-market sale | Common Stock | 2,597 | $49.89 | $130K | |
| Melissa A. Starovasnik | Open-market sale | Common Stock | 1,000 | $51.00 | $51K | |
| Dennis Cho - Officer | Open-market sale | Common Stock | 354 | $43.79 | $16K | |
| Paula Green - Officer | Open-market sale | Common Stock | 297 | $43.79 | $13K |
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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