WERNER ROBERT F. 4

What Happened
Robert F. Werner, Chief Accounting Officer of Twist Bioscience (TWST), sold 246 shares on 2026-03-06 at $46.43 per share, generating about $11,421 in proceeds. This was a sale (not a purchase) and identified in the filing as a sell-to-cover tied to the vesting of Restricted Stock Units rather than a discretionary trade.

Key Details

• Transaction date and price: 2026-03-06 — 246 shares sold at $46.43 each, total ≈ $11,421.
• Transaction type: Sale (code S); described in the filing as a sell-to-cover for tax withholding related to RSU vesting (footnote F1).
• Footnote F1: The sale was required to satisfy tax withholding obligations and was mandated by the issuer’s election under its equity incentive plans — not a discretionary trade by the reporting person.
• Shares owned after transaction: Not specified in the provided Form 4.
• Filing date and timeliness: Form 4 filed 2026-03-10; filing appears timely (filed within the customary 2 business days following the transaction).

Context
Sell-to-cover transactions are routine administrative sales to satisfy tax obligations when restricted stock units vest. Because this sale was mandated to cover taxes and was not a voluntary market-timing trade, it should not be interpreted by itself as a signal of the insider’s view on the company’s prospects.