Accardi Mario Alberto 4

What Happened
Mario Alberto Accardi, Chief Executive Officer of Centessa Pharmaceuticals plc (CNTA), had 604 ordinary shares withheld by the company to cover tax withholding obligations tied to the vesting of restricted share units. The withholding was recorded on 2026-05-01 at $39.42 per share, for a total value of approximately $23,810. This is a tax-withholding disposition (transaction code F), not an open-market sale.

Key Details

• Transaction date: 2026-05-01; Price: $39.42 per share; Shares withheld/disposed: 604; Approx. value: $23,810.
• Transaction code: F — payment of exercise price or tax liability (share-withholding to cover taxes).
• Footnote F1: Ordinary Shares may be represented by American Depositary Shares (ADS), each currently representing one Ordinary Share.
• Footnote F2: The 604 shares represent shares withheld by the issuer to satisfy tax withholding on vested RSUs.
• Filing date: 2026-05-18 (filed 17 days after the reported transaction date) — longer than the usual 2-business-day Form 4 filing requirement, so the filing appears late.
• Shares owned after the transaction: not specified in the provided filing excerpt.

Context
Share withholding to cover taxes on vested RSUs is a routine administrative action and is generally not considered a directional insider purchase or sale that signals a change in the insider’s investment view. This was not an open-market sale; the company retained the shares to satisfy tax obligations.