FORM 8.1(a) & (b) (Opening Position Disclosure)
1. Alkermes disclosed its position in the Irish Takeover Panel. 2. Avadel Pharmaceuticals is the relevant offeree in the disclosure. 3. J.P. Morgan acts as financial advisors for Alkermes. 4. Minor interests held by advisors revealed in the disclosure. 5. Disclosure date is November 5, 2025.