Twist Bioscience (TWST) Director Blake Katryn Sells Shares

What Happened Blake Katryn, a director of Twist Bioscience (TWST), sold 2,240 shares on 2026-08-12 at $122.88 per share, generating proceeds of $275,251. This was a sale (not a purchase) executed to cover tax withholding obligations related to the vesting of Restricted Stock Units (RSUs), and the filing indicates it was not a discretionary trade.

Key Details

• Transaction date and price: 2026-08-12, 2,240 shares at $122.88 each.
• Total proceeds: $275,251.
• Shares owned after transaction: not disclosed in the provided filing excerpt.
• Footnote: Sale made to cover tax liability from RSU vesting pursuant to a prior election (sell-to-cover); classified as tax withholding (F1).
• Filing timing: Report filed 2026-08-14 for the 2026-08-12 transaction — appears to be filed within the typical 2-business-day Form 4 window.

Context A "sell to cover" is a routine tax-withholding step that occurs when RSUs vest and does not necessarily reflect an insider's view of the company's future prospects. Such transactions are administrative and were made according to a prior election by the reporting person, not as a discretionary open-market sell.