Shane Cooke - 02 Feb 2026 Form 4 Insider Report for Alkermes plc. (ALKS)

Reporting relationship: Director
Issuer ticker: ALKS
Reported as of: 02 Feb 2026
Net transaction value: -$179,305
SEC form: 4
Accepted by SEC: 02 Feb 2026, 20:48:51 UTC
Prior SEC filing: 02 Jun 2025
Next SEC filing: 15 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Shantale Greenson, attorney-in-fact for Shane Cooke

Key filing fact

Shane Cooke filed Form 4 for Alkermes plc. (ALKS) on 02 Feb 2026.

Key facts

This page summarizes Shane Cooke's Form 4 filing for Alkermes plc. (ALKS).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 02 Feb 2026, 20:48.

Change

Previous filing in this sequence was filed on 02 Jun 2025.
Current net transaction value: -$179,305.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001524823 Primary reporting owner

Cooke Shane

Relationship: Director
Address: CONNAUGHT HOUSE, 1 BURLINGTON ROAD, DUBLIN
Signature: /s/ Shantale Greenson, attorney-in-fact for Shane Cooke
Signature date: 02 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ALKS transaction

Ordinary Shares

Options Exercise

Transaction value: $1,936,368
Shares: +61,200
Change %: +59%
Price: $31.64
Shares after: 164,944
Date: 02 Feb 2026
Ownership: Direct
Footnotes: F1

ALKS transaction

Ordinary Shares

Sale

Transaction value: $998,795
Shares: -29,087
Change %: -18%
Price: $34.34
Shares after: 135,857
Date: 02 Feb 2026
Ownership: Direct
Footnotes: F1, F2

ALKS transaction

Ordinary Shares

Sale

Transaction value: $1,116,877
Shares: -32,113
Change %: -24%
Price: $34.78
Shares after: 103,744
Date: 02 Feb 2026
Ownership: Direct
Footnotes: F1, F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ALKS transaction Derivative

Employee Stock Option (Right to Buy)

Options Exercise

Transaction value: $0
Shares: -61,200
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 02 Feb 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 61,200
Exercise price: $31.64
Footnotes: F1, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 4 footnotes

Footnote F1

This exercise and sale of expiring options was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/27/25.

Footnote F2

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $33.6923 to $34.69. Full information regarding the number of shares sold at each separate price can be provided to the issuer, any security holder of the issuer or the SEC staff upon request.

Footnote F3

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $34.70 to $34.91. Full information regarding the number of shares sold at each separate price can be provided to the issuer, any security holder of the issuer or the SEC staff upon request.

Footnote F4

These options are fully vested in accordance with their terms.