David Joseph Gaffin, EVP and Chief Legal Officer of Alkermes, Inc., filed a Form 4 on November 3, 2026, disclosing the sale of 2,035 ordinary shares of Alkermes plc. on that same date.

Key Highlights

  • Reporting person: David Joseph Gaffin, EVP and CLO of Alkermes, Inc.
  • Transaction: Disposition (code S) of 2,035 ordinary shares on November 3, 2026
  • Sale price: $46.17 per share
  • Post-transaction holdings: 219,353 ordinary shares held directly following the reported sale
  • 10b5-1 plan: The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by Gaffin on November 19, 2025

Gaffin's November 2026 Share Sale Under Pre-Established Trading Plan

According to the filing, David Joseph Gaffin, identified as EVP and CLO of Alkermes, Inc., disposed of 2,035 ordinary shares of Alkermes plc. (NASDAQ:ALKS) on November 3, 2026, at a price of $46.17 per share. The transaction is recorded as a direct disposition in Table I of the Form 4.

The filing notes that the sale "was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 11/19/2025." A Rule 10b5-1 plan is a pre-established written arrangement that allows insiders to set up scheduled securities transactions in advance. The filing checked the box indicating the transaction was made pursuant to such a contract, instruction, or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Following the reported transaction, Gaffin's direct beneficial ownership of Alkermes plc. ordinary shares stood at 219,353, according to the filing. No derivative securities transactions were reported in Table II. The Form 4 was signed by Shantale Greenson as attorney-in-fact for David Joseph Gaffin and filed on November 3, 2026.

What Was Disclosed

The Form 4 disclosed a single sale of 2,035 ordinary shares of Alkermes plc. by EVP and CLO David Joseph Gaffin at $46.17 per share on November 3, 2026, executed under a 10b5-1 plan established on November 19, 2025, leaving Gaffin with 219,353 directly held shares.