Leproust Emily M. 4

What Happened
Emily M. Leproust, CEO of Twist Bioscience (TWST), sold 2,423 shares on March 6, 2026 at $46.43 per share, generating gross proceeds of $112,490. The Form 4 lists the sale as an open-market/private sale (code S), but the filing’s footnote clarifies this was a mandated "sell-to-cover" to satisfy tax withholding on vested restricted stock units (RSUs), not a discretionary trade.

Key Details

• Transaction date: March 6, 2026; Price: $46.43 per share; Shares sold: 2,423; Proceeds: $112,490.
• Filing date (Form 4): March 10, 2026 — appears timely (filed within the required two business days).
• Shares owned after transaction: not reported in this Form 4.
• Notable footnote: F1 — sale was required to cover tax withholding on RSU vesting and did not represent a discretionary sale by the reporting person.
• Transaction code: S (sale); footnote indicates the sale is for tax withholding (often reported as F in explanatory notes).

Context
Sell-to-cover transactions are routine administrative sales that occur when a company requires some vested shares to be sold to pay required taxes; they generally do not signal the insider’s view on the company. This filing only reports a tax-withholding sale tied to RSU vesting and does not indicate additional purchases, gifts, or option exercises by the CEO.