Twist Bioscience Corp files with the SEC under CIK 0001581280 and is classified as biological products (no diagnostic substances). We track it alongside the rest of the Health Care sector.
TWST Form 4 activity by transaction type, last 90 days
Form 4 transaction type
Transactions
Shares
Total value
Open-market sale
77
808,183
$119.96M
Option exercise
12
767,500
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
TWST insider transactions (Form 4)
82
219 Form 4 filings on record, the earliest from Oct 4, 2024, newest first. Filing history page 1 of 3.
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F2 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $200 to $200.99 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F3 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $201 to $201.99 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F4 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $202 to $202.99 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F5 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $203.29 to $203.99 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $204.33 to $205.32 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $205.37 to $206.34 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $206.38 to $207.33 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F9 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $207.38 to $207.8 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F2 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F2 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $175 to $175.99 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F3 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $176 to $176.99 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F4 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $177.05 to $177.4 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $178.1 to $179 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F6 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $179.23 to $180.21 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $180.23 to $181.13 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $181.23 to $181.61 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F9 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $182.25 to $183.03 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F10 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $183.28 to $184.25 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F11 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $184.33 to $184.96 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F2 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $150.77 to 151.77 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $151.78 to $152.71 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $152.87 to $153.85 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $153.88 to $154.84 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $154.9 to $155.9 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $155.92 to $156.91 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $156.96 to $157.96 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F9 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $157.97 to $158.96 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F10 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $158.99 to $159.99 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F11 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $160.00 to $160.99 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F12 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $161.00 to $161.97 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F13 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $162.02 to $163 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F14 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $163.03 to $163.6 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F2 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $150.00 to $150.99 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $151.00 to $151.97 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $152.33 to $153.32 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $153.34 to $154.33 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $154.34 to $154.64 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the… Full note on SEC EDGAR
Footnote F1 (shares): The transaction reported on this Form 4 is effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on February 17, 2026.
Footnote F2 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $115.35 to $116.33 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $116.37 to $117.36 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $117.37to $118.19 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $118.505 to $119.45 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $119.515 to $120.2 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $120.585 to $121.53 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (shares): Represents the weighted average sales price per share. The shares sold at prices ranging from $122.00 to $122.815 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F1 (shares): Represents the number of shares sold by the Reporting Person to cover tax liability in connection with the vesting of Restricted Stock Units. This "sell to cover" transaction was made pursuant to a prior election by the Reporting Person and does not represent a discretionary… Full note on SEC EDGAR
Footnote F2 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $125.00 to $125.25 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
Footnote F2 (price): Represents the weighted average sales price per share. The shares sold at prices ranging from $125.00 to $125.51 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange… Full note on SEC EDGAR
An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
Twist Bioscience Corp (TWST) had 37 insider filings in the last 90 days, with the most recent on 2026-10-13. The full record for TWST runs to 219 Form 4 filings, the earliest from 2024-10-04. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying TWST stock?
No insider purchases of TWST were filed in the last 90 days.
How many insiders are selling TWST stock?
77 insider sales of TWST were filed in the last 90 days, totaling $119.96M.
Where can I see TWST SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects TWST Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
Adam Laponis - OfficerOpen-market sale$385K
Patrick John Finn - Officer
Robert F. Werner - Officer
Robert Chess - Director
