Hopkinson Craig C. 4

What Happened
Craig C. Hopkinson, Executive VP R&D and Chief Medical Officer of Alkermes plc (ALKS), exercised/converted 6,866 derivative units into ordinary shares on February 26, 2026. Of those, 3,049 shares were surrendered/withheld to cover tax liabilities at $30.73 per share (totaling $93,696), leaving a net 3,817 shares delivered to him. The filing lists the exercise/conversion as code M (derivative exercise/ conversion) and the share withholding as code F (tax withholding).

Key Details

• Transaction date: 2026-02-26; Form 4 filed 2026-02-27 (timely).
• Converted/exercised: 6,866 derivative units → 6,866 ordinary shares.
• Tax withholding: 3,049 shares withheld at $30.73/share = $93,696 (disposed under code F).
• Net shares received: 3,817 (6,866 − 3,049).
• Exercise/conversion reported with no exercise price shown (listed as N/A).
• Footnotes: F1 — each restricted stock unit (RSU) equals one ordinary share; F2 — these RSUs vest in four equal annual installments beginning 2/26/2025.
• Shares owned after the transaction are not specified in the provided excerpt of the filing.

Context
Code M indicates an exercise or conversion of a derivative (here tied to RSUs per the footnotes). The use of code F shows the company withheld shares to satisfy tax withholding — a common, routine administrative step when awards vest or are converted. This was not an open-market sale; it reflects vesting/conversion and tax withholding rather than a deliberate cash sale of shares for investment purposes.