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[Form 4] Alkermes plc. Insider Trading Activity

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Alkermes plc. director Cato T. Laurencin reported routine equity compensation activity. He received 5,409 restricted stock units and 11,538 non-qualified stock options with a $36.98 exercise price. On the next day, 6,142 RSUs were exercised into ordinary shares and 1,475 shares were withheld to cover tax obligations, leaving him with 35,244 ordinary shares directly held.

Positive

  • None.

Negative

  • None.
Insider LAURENCIN CATO T
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 — 35,244 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.
RSUs granted 5,409 units Restricted Stock Unit Award granted on May 20, 2026
Options granted 11,538 options Non Qualified Stock Option granted on May 20, 2026
Option exercise price $36.98 per share Conversion/exercise price for non-qualified stock options
Options expiration May 20, 2036 Expiration date of non-qualified stock options
RSUs exercised 6,142 shares Ordinary shares from RSU exercise on May 21, 2026
Shares withheld for taxes 1,475 shares Tax-withholding disposition at $36.95 per share
Shares held after transactions 35,244 ordinary shares Direct holdings following RSU exercise and tax withholding
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 4UNITED 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*
LAURENCIN CATO T
(Last)(First)(Middle)
CONNAUGHT HOUSE
1 BURLINGTON ROAD
(Street)
DUBLIN4 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)
XDirector10% 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)
XForm 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)
CodeVAmount(A) or (D)Price
Ordinary Shares05/21/2026M6,142A(1)35,244D
Ordinary Shares05/21/2026F1,475D$36.9533,769D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Non Qualified Stock Option (Right to Buy)$36.9805/20/2026A11,538 (2)05/20/2036Ordinary Shares11,538$011,538D
Restricted Stock Unit Award(1)05/20/2026A5,409 (2) (2)Ordinary Shares5,409$05,409D
Restricted Stock Unit Award(1)05/21/2026M6,142 (3) (3)Ordinary Shares6,142(1)0D
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 Cato T. Laurencin05/22/2026
** Signature of Reporting PersonDate
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