Richard Gaynor - 20 May 2026 Form 4/A - Amendment Insider Report for Alkermes plc. (ALKS)

Reporting relationship: Director
Issuer ticker: ALKS
Reported as of: 20 May 2026
Net transaction value: $0
SEC form: 4/A - Amendment
Accepted by SEC: 22 May 2026, 19:59:32 UTC
Original report date: 22 May 2026
Prior SEC filing: 19 Mar 2026
Next SEC filing: 22 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Shantale Greenson, attorney-in-fact for Richard Gaynor

Key filing fact

Richard Gaynor filed Form 4/A - Amendment for Alkermes plc. (ALKS) on 22 May 2026.

Key facts

This page summarizes Richard Gaynor's Form 4/A - Amendment filing for Alkermes plc. (ALKS).
2 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 22 May 2026, 19:59.

Change

Previous filing in this sequence was filed on 19 Mar 2026.
Current net transaction value: $0.

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/A - Amendment disclosures.

View source filing

Reporting Owners (1)

CIK 0001741284 Primary reporting owner

GAYNOR RICHARD

Relationship: Director
Address: CONNAUGHT HOUSE, 1 BURLINGTON ROAD, DUBLIN, IRELAND
Signature: /s/ Shantale Greenson, attorney-in-fact for Richard Gaynor
Signature date: 22 May 2026

Reported derivative securities

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

ALKS transaction Derivative

Non Qualified Stock Option (Right to Buy)

Award

Transaction value
Shares: +11,538
Change %
Price: $0.000000^*
Shares after: 11,538
Date: 20 May 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 11,538
Exercise price: $36.98
Footnotes: F1, F2

ALKS transaction Derivative

Restricted Stock Unit Award

Award

Transaction value
Shares: +5,409
Change %
Price: $0.000000^*
Shares after: 5,409
Date: 20 May 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 5,409
Exercise price
Footnotes: F1, F2, F3

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Shares subject to the award vest (and if applicable, become exercisable) in full on the earlier of the one-year anniversary of the date of grant or the date of the issuer's next annual general meeting of shareholders that occurs at least 50 weeks after the date of grant.

Footnote F2

This amendment is being filed to reflect the vesting terms applicable to this award, which were reported incorrectly on the original Form 4. The correct vesting schedule is set forth in Footnote 1 above.

Footnote F3

Each restricted stock unit represents a contingent right to receive one ordinary share.