Alkermes (ALKS) director logs RSU exercise, tax withholding and new equity grants

Rhea-AI Filing Summary

Alkermes plc. director Wilson Frank Anders reported several routine equity compensation moves. On May 21, 2026, he exercised 6,142 Restricted Stock Units, receiving the same number of ordinary shares, and had 1,475 ordinary shares withheld to cover tax obligations at $36.95 per share. Following these transactions, he directly held 37,226 ordinary shares.

On May 20, 2026, he received a new grant of 5,409 Restricted Stock Units, each representing a contingent right to one ordinary share, and a Non Qualified Stock Option for 11,538 ordinary shares with an exercise price of $36.98 per share, expiring on May 20, 2036. The filing describes these events as grants, vesting, and tax-withholding rather than open-market buying or selling.

Insights

Equity compensation analyst

Routine director equity grants, RSU vesting, and tax withholding.

The transactions show Wilson Frank Anders, a director of Alkermes plc., receiving equity compensation and settling taxes. He exercised 6,142 RSUs into ordinary shares and had 1,475 shares withheld at $36.95 for tax obligations, a standard non-market mechanism.

He also received 5,409 new RSUs and options on 11,538 shares at an exercise price of $36.98, expiring in 2036. These awards align with typical board compensation structures and do not involve open-market purchases or sales, so the informational value for investors is limited and primarily administrative.

Insider Trade Summary

6,142 shares exercised/converted

Mixed 5 txns

Insider Wilson Frank Anders

Role null

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

Holdings After Transaction: Restricted Stock Unit Award — 0 shares (Direct, null); Ordinary Shares — 37,226 shares (Direct, null); Non Qualified Stock Option (Right to Buy) — 11,538 shares (Direct, null)

Footnotes (1)

1. Each restricted stock unit represents a contingent right to receive one ordinary share. 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. This award is fully vested in accordance with its terms.

Key Figures

RSUs exercised: 6,142 shares Tax withholding shares: 1,475 shares at $36.95 Shares held after transactions: 37,226 shares +2 more

5 metrics

RSUs exercised 6,142 shares Restricted Stock Units converted to ordinary shares on May 21, 2026

Tax withholding shares 1,475 shares at $36.95 Shares withheld to satisfy tax liability on May 21, 2026

Shares held after transactions 37,226 shares Direct ordinary share holdings following reported transactions

New RSU grant 5,409 units Restricted Stock Unit Award granted May 20, 2026

New option grant 11,538 shares at $36.98 Non Qualified Stock Option, expires May 20, 2036

Key Terms

Restricted Stock Unit Award, Non Qualified Stock Option (Right to Buy), tax-withholding disposition, Exercise or conversion of derivative security, +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.

Exercise or conversion of derivative security financial

"transaction_code_description: "Exercise or conversion of derivative security""

Grant, award, or other acquisition financial

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

Form 4 Insider Transactions: What Each Field Means →

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^*

Wilson Frank Anders

(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)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	05/21/2026		M		6,142	A	(1)	37,226	D
Ordinary Shares	05/21/2026		F		1,475	D	$36.95	35,751	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Non Qualified Stock Option (Right to Buy)	$36.98	05/20/2026		A		11,538		(2)	05/20/2036	Ordinary Shares	11,538	$0	11,538	D
Restricted Stock Unit Award	(1)	05/20/2026		A		5,409		(2)	(2)	Ordinary Shares	5,409	$0	5,409	D
Restricted Stock Unit Award	(1)	05/21/2026		M			6,142	(3)	(3)	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 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.

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

	/s/ Shantale Greenson, attorney-in-fact for Frank Anders Wilson	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)