POPS RICHARD F 4

What Happened

• Richard F. Pops, CEO and a director of Alkermes plc, had 149,580 ordinary shares vest on Feb 5, 2026 as the final payout of performance-vesting restricted stock units granted Feb 23, 2023. The vesting was based on achievement of pre-specified performance goals and a relative total shareholder return modifier.
• To satisfy tax withholding (reported as code F), 62,230 of those shares were disposed at $33.55 per share, producing proceeds of $2,087,816. The remaining vested shares (149,580 acquired less 62,230 withheld) remained with Pops.

Key Details

• Transaction date: 2026-02-05 (Form 4 filed 2026-02-06).
• Award: 149,580 shares acquired via vesting of 2023 PRSUs (no purchase price — award).
• Tax withholding/Disposition: 62,230 shares disposed at $33.55; total value reported $2,087,816.
• Footnote: These shares are the final vesting event under the 2023 PRSUs (three-year performance period ended 12/31/2025).
• Shares owned after transaction: not specified in the provided filing.
• Filing timeliness: Filed the next day (appears timely; no late filing flag in the record).

Context

• This was primarily a vesting of performance-based restricted stock units (an award), with a routine tax-withholding disposition rather than an open-market sale. Tax-withholding disposals are common and don't necessarily indicate the insider is reducing their overall stake for investment reasons.