Alkermes (ALKS) COO converts RSUs and uses company stock to pay taxes

Rhea-AI Filing Summary

Alkermes plc executive Jackson Blair Curtis, EVP and Chief Operating Officer, exercised restricted stock units into ordinary shares and delivered shares to cover taxes. On February 18–19, 2026, he converted a total of 18,197 RSUs into ordinary shares.

To satisfy tax withholding, 7,926 ordinary shares were disposed of at prices around $32 per share, described as payment of tax liability rather than open‑market sales. After these transactions, he held 231,823 ordinary shares directly. One RSU award is fully vested, and another vests in four equal annual installments starting February 19, 2026.

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

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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^*

Jackson Blair Curtis

(Last) (First) (Middle)

900 WINTER ST.

(Street)

WALTHAM MA 02451

(City) (State) (Zip)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Operating Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/18/2026

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

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

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

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	02/18/2026		M		8,897	A	(1)	230,449	D
Ordinary Shares	02/18/2026		F		3,796	D	$32.02	226,653	D
Ordinary Shares	02/19/2026		M		9,300	A	(1)	235,953	D
Ordinary Shares	02/19/2026		F		4,130	D	$32	231,823	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
Restricted Stock Unit Award	(1)	02/18/2026		M			8,897	(2)	(2)	Ordinary Shares	8,897	(1)	0	D
Restricted Stock Unit Award	(1)	02/19/2026		M			9,300	(3)	(3)	Ordinary Shares	9,300	(1)	27,903	D

Explanation of Responses:

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

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

3. Shares subject to the restricted stock unit award vest in four equal annual installments, commencing on 2/19/2026.

	/s/ Shantale Greenson, attorney-in-fact for Blair C. Jackson	02/20/2026
	** 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).
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FAQ

What insider transactions did Alkermes (ALKS) COO Jackson Blair Curtis report?

Jackson Blair Curtis reported exercising restricted stock units into ordinary shares and delivering some shares to cover tax liabilities. Across February 18–19, 2026, he converted 18,197 RSUs and disposed of 7,926 shares for tax withholding, not open‑market selling.

How many Alkermes (ALKS) RSUs did Jackson Blair Curtis convert to shares?

He converted 18,197 restricted stock units into ordinary shares of Alkermes. This came from 8,897 RSUs on February 18, 2026 and 9,300 RSUs on February 19, 2026, each RSU representing a contingent right to receive one ordinary share under the company’s equity awards.

Did Jackson Blair Curtis sell Alkermes (ALKS) shares on the open market?

The filing shows dispositions coded “F,” indicating shares were delivered to pay tax liabilities. 3,796 shares on February 18, 2026 and 4,130 shares on February 19, 2026 were used this way, at prices around $32, not characterized as discretionary open‑market sales.

What is Jackson Blair Curtis’s Alkermes (ALKS) share ownership after these transactions?

Following the reported transactions, Jackson Blair Curtis directly owned 231,823 Alkermes ordinary shares. This figure reflects RSU conversions on February 18–19, 2026 and the share dispositions used to satisfy associated tax withholding obligations, as detailed in the reported non‑derivative holdings.

How do Jackson Blair Curtis’s Alkermes (ALKS) RSU awards vest?

One restricted stock unit award referenced is fully vested according to its terms. Another award vests in four equal annual installments, beginning on February 19, 2026. Each restricted stock unit represents a contingent right to receive one Alkermes ordinary share upon vesting and settlement.

What do the Form 4 transaction codes M and F mean for Alkermes (ALKS)?

Code M indicates the exercise or conversion of derivative securities, here restricted stock units turning into ordinary shares. Code F indicates disposition of shares to pay an exercise price or tax liability. In this Form 4, both codes describe equity award–related activity, not standard market trading.