STOCK TITAN

Alkermes (ALKS) director reports RSU vesting, tax withholding and new stock options

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

Rhea-AI Filing Summary

Alkermes plc. director Richard Gaynor reported routine equity compensation and related share movements. He exercised 6,142 restricted stock units into ordinary shares and had 1,475 shares withheld to cover tax obligations at $36.95 per share, leaving 35,751 ordinary shares directly held after the withholding.

Gaynor also received new awards on ordinary shares: 5,409 restricted stock units and 11,538 non-qualified stock options with a $36.98 exercise price. Both the new RSUs and options vest fully on May 20, 2027, and the option award is exercisable after vesting through May 20, 2036.

Positive

  • None.

Negative

  • None.
Insider GAYNOR RICHARD
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 stock option award vest and become exercisable in full on 5/20/2027. Shares subject to the restricted stock unit award vest in full on 5/20/2027. This award is fully vested in accordance with its terms.
Tax-withheld shares 1,475 shares at $36.95 Shares withheld to cover tax or exercise cost on 2026-05-21
RSUs exercised 6,142 shares Restricted stock unit award converted into ordinary shares on 2026-05-21
Shares held after withholding 35,751 shares Ordinary shares directly owned following tax-withholding disposition
New RSU grant 5,409 units Restricted stock unit award granted on 2026-05-20, vesting 2027-05-20
New option grant 11,538 options at $36.98 Non-qualified stock option award on 2026-05-20, exercisable 2027-05-20 to 2036-05-20
Post-exercise holding entry 37,226 shares Ordinary shares shown following RSU exercise transaction entry
Restricted Stock Unit Award financial
"security_title: Restricted Stock Unit Award tied to ordinary shares"
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) on ordinary shares"
tax-withholding disposition financial
"transaction_action: tax-withholding disposition using shares to cover obligations"
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 of RSUs into ordinary shares"
Grant, award, or other acquisition financial
"transaction_code_description: Grant, award, or other acquisition of derivatives"
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*
GAYNOR RICHARD

(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)37,226D
Ordinary Shares05/21/2026F1,475D$36.9535,751D
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)$36.9805/20/2026A11,53805/20/2027(2)05/20/2036Ordinary Shares11,538$011,538D
Restricted Stock Unit Award(1)05/20/2026A5,40905/20/2027(3) (3)Ordinary Shares5,409$05,409D
Restricted Stock Unit Award(1)05/21/2026M6,142 (4) (4)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 stock option award vest and become exercisable in full on 5/20/2027.
3. Shares subject to the restricted stock unit award vest in full on 5/20/2027.
4. This award is fully vested in accordance with its terms.
/s/ Shantale Greenson, attorney-in-fact for Richard Gaynor05/22/2026
** 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)

FAQ

What insider transactions did Alkermes (ALKS) director Richard Gaynor report?

Richard Gaynor reported exercising 6,142 restricted stock units into ordinary shares and 1,475 shares withheld for taxes. He also received grants of 5,409 restricted stock units and 11,538 non-qualified stock options tied to Alkermes ordinary shares.

How many Alkermes (ALKS) shares does Richard Gaynor hold after these transactions?

After the reported tax-withholding disposition of 1,475 shares, Richard Gaynor directly holds 35,751 Alkermes ordinary shares. A subsequent exercise entry shows 37,226 shares, reflecting the RSU conversion, but the filing clearly lists 35,751 shares following the withholding.

What new equity awards did Richard Gaynor receive from Alkermes (ALKS)?

Richard Gaynor received 5,409 restricted stock units and 11,538 non-qualified stock options on Alkermes ordinary shares. Each restricted stock unit represents a contingent right to one share, and the options give him the right to buy 11,538 shares at a fixed exercise price.

When do Richard Gaynor’s new Alkermes (ALKS) equity awards vest?

Both the 5,409 restricted stock units and 11,538 non-qualified stock options vest in full on May 20, 2027. Once vested, the options become exercisable on that date, and the restricted stock units convert into ordinary shares according to their terms.

What is the exercise price and term of Richard Gaynor’s Alkermes (ALKS) stock options?

The non-qualified stock option grant covers 11,538 ordinary shares at a $36.98 exercise price. These options vest and become exercisable on May 20, 2027, and remain exercisable until May 20, 2036, providing a defined window to purchase shares.

Was Richard Gaynor’s share disposition in Alkermes (ALKS) an open-market sale?

No. The 1,475-share disposition was reported with code F, indicating shares were withheld to pay an exercise price or tax liability. This is a tax-withholding mechanism, not an open-market sale, and does not represent a discretionary trade in the market.