What are Brian P. McKeon’s reported Alkermes (ALKS) share holdings after these transactions?

Following the reported transactions, McKeon directly holds 40,011 ordinary shares. Additionally, 10,000 ordinary shares are held indirectly by The Brian P. McKeon Revocable Trust, where he and his wife serve as trustees for family beneficiaries.

Alkermes director exercises RSUs, gets new equity awards

Q: What equity awards did Alkermes (ALKS) director Brian P. McKeon receive in this Form 4?

Brian P. McKeon received a restricted stock unit award for 5,409 units and a non-qualified stock option for 11,538 shares at a $36.98 exercise price. Each restricted stock unit represents a contingent right to receive one Alkermes ordinary share.

Q: How many Alkermes (ALKS) shares did Brian P. McKeon acquire through RSU vesting?

McKeon acquired 6,142 ordinary shares through the exercise of a restricted stock unit award. This derivative exercise converted fully vested RSUs into ordinary shares, increasing his direct share ownership before accounting for shares withheld to cover related tax obligations.

Q: Were any Alkermes (ALKS) shares sold by Brian P. McKeon in the open market?

No open-market sale is reported. Instead, 1,475 shares were disposed of at $36.95 per share as a tax-withholding disposition, meaning shares were delivered to cover tax liabilities rather than being sold in a market transaction.

Q: What does the Alkermes (ALKS) Form 4 disclose about McKeon’s trust-held shares?

The filing notes 10,000 ordinary shares are held by The Brian P. McKeon Revocable Trust. McKeon and his wife are trustees, and members of his immediate family are beneficiaries, indicating these are reported as indirect holdings associated with the director.

Alkermes plc director Brian P. McKeon reported multiple equity transactions involving ordinary shares and equity awards.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

Rhea-AI Filing Summary

Alkermes plc director Brian P. McKeon reported multiple equity transactions involving ordinary shares and equity awards. He exercised restricted stock units covering 6,142 ordinary shares, with 1,475 shares withheld at $36.95 per share to satisfy tax obligations, leaving 38,536 ordinary shares held directly after the tax-withholding disposition.

He also received a new restricted stock unit award for 5,409 units and a non-qualified stock option for 11,538 shares with a $36.98 exercise price, both granted at no cash cost and each RSU representing a contingent right to one ordinary share. In addition, 10,000 ordinary shares are held indirectly by The Brian P. McKeon Revocable Trust, of which he and his wife are trustees.

Insider Trade Summary

6,142 shares exercised/converted

Exercise 6 txns

Insider MCKEON BRIAN P

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit Award	6,142	$0.00	$0.00
Exercise	Ordinary Shares	6,142	$0.00	$0.00
Exercise Price or Tax Liability	Ordinary Shares	1,475	$36.95	$55K
Grant/Award	Non Qualified Stock Option (Right to Buy)	11,538	$0.00	$0.00
Grant/Award	Restricted Stock Unit Award	5,409	$0.00	$0.00
holding	Ordinary Shares	--	--	--

Holdings After Transaction: Non Qualified Stock Option (Right to Buy) — 11,538 contracts (Direct); Restricted Stock Unit Award — 5,409 contracts (Direct); Ordinary Shares — 38,536 shares (Direct); Ordinary Shares — 10,000 shares (Indirect, By the Brian P. McKeon Trust)

Footnotes (4)

F1. Each restricted stock unit represents a contingent right to receive one ordinary share.
F2. Shares are held by The Brian P. McKeon Revocable Trust, dated April 12, 2007 and amended and restated on February 8, 2019 (the "Brian P. McKeon Trust"), of which the reporting person and his wife are the trustees and members of the reporting person's immediate family are the beneficiaries.
F3. 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.
F4. This award is fully vested in accordance with its terms.

Key Figures

RSUs exercised: 6,142 shares Tax-withheld shares: 1,475 shares at $36.95/share Direct holdings after transactions: 40,011 shares +3 more

6 metrics

RSUs exercised 6,142 shares Ordinary shares from restricted stock unit exercise

Tax-withheld shares 1,475 shares at $36.95/share Shares delivered to satisfy tax obligations

Direct holdings after transactions 40,011 shares Ordinary shares held directly after reported transactions

Indirect trust holdings 10,000 shares Ordinary shares held by The Brian P. McKeon Trust

New RSU award 5,409 units Restricted stock units representing rights to ordinary shares

New stock option grant 11,538 options at $36.98 Non-qualified stock option expiring May 20, 2036

Key Terms

Restricted Stock Unit Award, Non Qualified Stock Option (Right to Buy), tax-withholding disposition, derivative exercise/conversion, +1 more

5 terms

Restricted Stock Unit Award financial

"security_title: "Restricted Stock Unit Award""

A restricted stock unit award is a promise by a company to give an employee a specified number of company shares at a future date if certain conditions are met, such as staying with the company or hitting performance goals. For investors, these awards matter because they can increase the total number of shares outstanding when converted, diluting existing holders, and they align employees’ incentives with shareholders’ interests much like giving a rising bonus that becomes real only after conditions are satisfied.

Non Qualified Stock Option (Right to Buy) financial

"security_title: "Non Qualified Stock Option (Right to Buy)""

tax-withholding disposition financial

"transaction_action: "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

derivative exercise/conversion financial

"transaction_action: "derivative exercise/conversion""

grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What equity awards did Alkermes (ALKS) director Brian P. McKeon receive in this Form 4?

Brian P. McKeon received a restricted stock unit award for 5,409 units and a non-qualified stock option for 11,538 shares at a $36.98 exercise price. Each restricted stock unit represents a contingent right to receive one Alkermes ordinary share.

How many Alkermes (ALKS) shares did Brian P. McKeon acquire through RSU vesting?

McKeon acquired 6,142 ordinary shares through the exercise of a restricted stock unit award. This derivative exercise converted fully vested RSUs into ordinary shares, increasing his direct share ownership before accounting for shares withheld to cover related tax obligations.

Were any Alkermes (ALKS) shares sold by Brian P. McKeon in the open market?

No open-market sale is reported. Instead, 1,475 shares were disposed of at $36.95 per share as a tax-withholding disposition, meaning shares were delivered to cover tax liabilities rather than being sold in a market transaction.

How do the new Alkermes (ALKS) equity awards vest for Brian P. McKeon?

Shares subject to the new awards vest, and where applicable become exercisable, in full on the earlier of the one-year anniversary of the grant date or the issuer’s next annual general meeting held at least 50 weeks after the grant date.

What does the Alkermes (ALKS) Form 4 disclose about McKeon’s trust-held shares?

The filing notes 10,000 ordinary shares are held by The Brian P. McKeon Revocable Trust. McKeon and his wife are trustees, and members of his immediate family are beneficiaries, indicating these are reported as indirect holdings associated with the director.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 05/22/2026 - 08:03 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

MCKEON BRIAN P

(Last)

(First)

(Middle)

CONNAUGHT HOUSE

1 BURLINGTON ROAD

(Street)

DUBLIN

4 Ireland

(City)

(State)

(Zip)

IRELAND

(Country)

2. Issuer Name and Ticker or Trading Symbol
Alkermes plc. [ ALKS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary Shares	05/21/2026		M		6,142	A	⁽¹⁾	40,011	D
Ordinary Shares	05/21/2026		F		1,475	D	$36.95	38,536	D
Ordinary Shares								10,000	I	By the Brian P. McKeon Trust⁽²⁾

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Non Qualified Stock Option (Right to Buy)	$36.98	05/20/2026		A		11,538		⁽³⁾	05/20/2036	Ordinary Shares	11,538	$0	11,538	D
Restricted Stock Unit Award	⁽¹⁾	05/20/2026		A		5,409		⁽³⁾	⁽³⁾	Ordinary Shares	5,409	$0	5,409	D
Restricted Stock Unit Award	⁽¹⁾	05/21/2026		M			6,142	⁽⁴⁾	⁽⁴⁾	Ordinary Shares	6,142	⁽¹⁾	0	D

Explanation of Responses:

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

2. Shares are held by The Brian P. McKeon Revocable Trust, dated April 12, 2007 and amended and restated on February 8, 2019 (the "Brian P. McKeon Trust"), of which the reporting person and his wife are the trustees and members of the reporting person's immediate family are the beneficiaries.

3. 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.

4. This award is fully vested in accordance with its terms.

	/s/ Shantale Greenson, attorney-in-fact for Brian P. McKeon	05/22/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR