Alkermes EVP exercises options and sells shares

Alkermes plc EVP R&D and Chief Medical Officer Craig C. Hopkinson exercised employee stock options for 5,000 ordinary shares at $19.34 per share and then sold 9,000 ordinary shares at a weighted average price of $33.3955 on May 1, 2026.

Rhea-AI Filing Summary

Alkermes plc EVP R&D and Chief Medical Officer Craig C. Hopkinson exercised employee stock options for 5,000 ordinary shares at $19.34 per share and then sold 9,000 ordinary shares at a weighted average price of $33.3955 on May 1, 2026.

Both the option exercise and the open-market sale were carried out under a pre-arranged Rule 10b5-1 trading plan adopted on March 14, 2025. After these transactions, Hopkinson directly held 81,389 ordinary shares, and the exercised options are fully vested in accordance with their terms.

Insider Trade Summary 10b5-1

Exercise and sale activity reported; no spread calculated

Exercise and Sale 3 txns

Insider Hopkinson Craig C.

Role EVP R&D, Chief Medical Officer

Sold 9,000 shs ($301K)

Approx. gross sale proceeds $301K

Approx. exercise cost $97K

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option (Right to Buy)	5,000	$0.00	$0.00
Exercise	Ordinary Shares	5,000	$19.34	$97K
Sale	Ordinary Shares	9,000	$33.3955	$301K

Holdings After Transaction: Employee Stock Option (Right to Buy) — 11,356 contracts (Direct); Ordinary Shares — 81,389 shares (Direct)

Footnotes (4)

1. F1. This option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 3/14/2025.
2. F2. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 3/14/2025.
3. F3. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $33.21 to $33.49. Full information regarding the number of shares sold at each separate price can be provided to the issuer, any security holder of the issuer or the SEC staff upon request.
4. F4. These options are fully vested in accordance with their terms.

Key Figures

Shares sold: 9,000 shares Sale price (weighted average): $33.3955 per share Sale price range: $33.21–$33.49 per share +4 more

7 metrics

Shares sold 9,000 shares Open-market sale of ordinary shares on May 1, 2026

Sale price (weighted average) $33.3955 per share Weighted average sale price for 9,000 ordinary shares

Sale price range $33.21–$33.49 per share Price range of multiple sale transactions on May 1, 2026

Options exercised 5,000 shares Ordinary shares acquired via option exercise on May 1, 2026

Option exercise price $19.34 per share Exercise price for Employee Stock Option (Right to Buy)

Shares held after transactions 81,389 shares Direct ordinary share holdings after May 1, 2026 transactions

Option expiration date February 22, 2031 Expiration date of exercised Employee Stock Option grant

Key Terms

Rule 10b5-1 trading plan, Employee Stock Option (Right to Buy), weighted average price, ordinary shares, +1 more

5 terms

Rule 10b5-1 trading plan financial

"This option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted..."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Employee Stock Option (Right to Buy) financial

"Security title is listed as Employee Stock Option (Right to Buy)..."

weighted average price financial

"The price reported in Column 4 is a weighted average price..."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

ordinary shares financial

"Security title for the equity transactions is Ordinary Shares..."

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

fully vested financial

"These options are fully vested in accordance with their terms."

FAQ

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

What insider transactions did ALKS executive Craig Hopkinson report on May 1, 2026?

Craig Hopkinson reported exercising options for 5,000 Alkermes ordinary shares at $19.34 and selling 9,000 ordinary shares at a weighted average price of $33.3955. These transactions were disclosed in a Form 4 filing for May 1, 2026.

Were Craig Hopkinson’s ALKS share sale and option exercise under a Rule 10b5-1 plan?

Yes. Both the 5,000-share option exercise and the 9,000-share sale by Craig Hopkinson were executed pursuant to a Rule 10b5-1 trading plan adopted on March 14, 2025, indicating the trades were pre-scheduled rather than discretionary.

How many Alkermes (ALKS) shares does Craig Hopkinson hold after these Form 4 transactions?

Following the reported transactions, Craig Hopkinson directly holds 81,389 Alkermes ordinary shares. This figure reflects his position after exercising 5,000 options and selling 9,000 shares on May 1, 2026, as shown in the Form 4.

What prices were involved in Craig Hopkinson’s ALKS share sale and option exercise?

The option exercise covered 5,000 ordinary shares at an exercise price of $19.34 per share. The sale of 9,000 ordinary shares occurred at a weighted average price of $33.3955, with individual trades ranging from $33.21 to $33.49.

What happened to Craig Hopkinson’s Alkermes employee stock options in this Form 4 filing?

Craig Hopkinson exercised 5,000 Employee Stock Options (Right to Buy) for Alkermes ordinary shares at an exercise price of $19.34. The filing notes these options are fully vested in accordance with their terms and had an expiration date of February 22, 2031.

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

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Accepted by SEC EDGAR 05/01/2026 - 09:05 PM Learn about SEC filing dates

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).

X

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^*

Hopkinson Craig C.

(Last) (First) (Middle)

900 WINTER STREET

(Street)

WALTHAM MASSACHUSETTS 02451

(City) (State) (Zip)

UNITED STATES

(Country)

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 R&D, Chief Medical Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026

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	05/01/2026		M(1)		5,000	A	$19.34	90,389	D
Ordinary Shares	05/01/2026		S(2)		9,000	D	$33.3955(3)	81,389	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
Employee Stock Option (Right to Buy)	$19.34	05/01/2026		M(1)			5,000	(4)	02/22/2031	Ordinary Shares	5,000	$0	11,356	D

Explanation of Responses:

1. This option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 3/14/2025.

2. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 3/14/2025.

3. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $33.21 to $33.49. Full information regarding the number of shares sold at each separate price can be provided to the issuer, any security holder of the issuer or the SEC staff upon request.

4. These options are fully vested in accordance with their terms.

	/s/ Shantale Greenson, attorney-in-fact for Craig C. Hopkinson	05/01/2026
	** 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)