---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-056057"
form_type: "8-K"
ticker: "ALKS"
cik: "0001520262"
company_name: "Alkermes plc."
filed_at: "2023-10-27T23:59:59+00:00"
generated_at: "2026-06-09T06:58:04.923149+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Alkermes sets Nov 6 record date for Mural Oncology spin-off distribution

## Summary
- Board set Nov 6, 2023 as record date for distribution of Mural ordinary shares to Alkermes shareholders.
- No shareholder action required to receive Mural shares.
- Distribution subject to SEC declaring Form 10 effective and Mural listing on Nasdaq.
- Mural is the oncology business being separated into an independent public company.

## SEC filing metadata
- accession: 0000950170-23-056057
- form_type: 8-K
- ticker: ALKS
- cik: 0001520262
- company_name: Alkermes plc.
- filed_at: 2023-10-27T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1520262/000095017023056057/0000950170-23-056057-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1520262/000095017023056057/alks-20231027.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-056057
- JSON: https://secwatch.observer/filing/0000950170-23-056057.json
- Plain text: https://secwatch.observer/filing/0000950170-23-056057.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.