# EDGAR Filing Document

**Accession Number:** 0001520262
**File Stem:** 0001193125-26-144016
**Filing Date:** 2026-4
**Character Count:** 1367
**Document Hash:** 4e92c731baa2b3c673cc6d678b8fa39d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-144016.hdr.sgml**: 20260406

**ACCESSION NUMBER**: 0001193125-26-144016

**CONFORMED SUBMISSION TYPE**: ARS

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260406

**DATE AS OF CHANGE**: 20260406

**EFFECTIVENESS DATE**: 20260406

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Alkermes plc.
- **CENTRAL INDEX KEY:** 0001520262
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 981007018
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** ARS
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-35299
- **FILM NUMBER:** 26842158

**BUSINESS ADDRESS:**
- **STREET 1:** CONNAUGHT HOUSE
- **STREET 2:** 1 BURLINGTON ROAD
- **CITY:** DUBLIN 4
- **STATE:** L2
- **ZIP:** 00000
- **BUSINESS PHONE:** 00-353-1-772-8000

**MAIL ADDRESS:**
- **STREET 1:** CONNAUGHT HOUSE
- **STREET 2:** 1 BURLINGTON ROAD
- **CITY:** DUBLIN 4
- **STATE:** L2
- **ZIP:** 00000

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ANTLER SCIENCE TWO PLC
- **DATE OF NAME CHANGE:** 20110804

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Antler Science Two Ltd
- **DATE OF NAME CHANGE:** 20110509

### Attached PDF Documents

**Attachment 1:** `alks_ars_fye_2025.pdf`

_No text found in this document._