Alkermes (ALKS) finance VP exercises options and sells 16,217 shares

Rhea-AI Filing Summary

Alkermes plc VP of Finance (Interim PAO) Samuel Joseph Parisi reported an exercise-and-sell transaction in company stock. On May 29, 2026, he exercised employee stock options to acquire a total of 16,217 Ordinary Shares at exercise prices of $19.34 and $20.03 per share. He then sold 16,217 Ordinary Shares in open-market transactions at a weighted average price of $42.3634 per share, with individual sale prices ranging from $42.245 to $42.50. After these transactions, he directly held 7,717 Ordinary Shares of Alkermes.

Insights

Equity compensation analyst

Routine option exercise and full share sale by Alkermes finance executive.

This filing shows VP of Finance (Interim PAO) Samuel Joseph Parisi exercising employee stock options for 16,217 Ordinary Shares at strike prices of $19.34 and $20.03 on May 29, 2026. These options were fully vested in accordance with their terms.

All 16,217 shares acquired from the option exercises were sold the same day in open-market trades at a weighted average of $42.3634 per share, with prices between $42.245 and $42.50. This pattern is typical for monetizing vested options once in the money.

Following the transactions, Parisi directly holds 7,717 Ordinary Shares. The absence of remaining derivative positions in this filing suggests these particular option grants were fully exercised. The transactions reflect a net sale from his perspective, but their significance relative to Alkermes’ total shares is not indicated here.

Insider Trade Summary

Net Seller: 16,217 shares ($687,007)

Net Sell 5 txns

Insider Parisi Samuel Joseph

Role VP, Finance (Interim PAO)

Sold 16,217 shs ($687K)

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option (Right to Buy)	3,392	$0.00	--
Exercise	Employee Stock Option (Right to Buy)	12,825	$0.00	--
Exercise	Ordinary Shares	3,392	$20.03	$68K
Exercise	Ordinary Shares	12,825	$19.34	$248K
Sale	Ordinary Shares	16,217	$42.3634	$687K

Holdings After Transaction: Employee Stock Option (Right to Buy) — 3,394 shares (Direct, null); Ordinary Shares — 11,109 shares (Direct, null)

Footnotes (1)

1. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $42.245 to $42.50. 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. These options are fully vested in accordance with their terms.

Key Figures

Shares sold: 16,217 shares Weighted average sale price: $42.3634 per share Sale price range: $42.245 to $42.50 +5 more

8 metrics

Shares sold 16,217 shares Ordinary Shares sold in open market on May 29, 2026

Weighted average sale price $42.3634 per share Open-market sales of Ordinary Shares

Sale price range $42.245 to $42.50 Price range for multiple sale transactions

Options exercised at $19.34 12,825 shares Employee stock options exercised into Ordinary Shares

Options exercised at $20.03 3,392 shares Employee stock options exercised into Ordinary Shares

Shares held after transactions 7,717 shares Direct ownership of Ordinary Shares following Form 4 trades

Option expiration date February 22, 2031 Employee stock option grant with $19.34 strike

Option expiration date February 20, 2030 Employee stock option grant with $20.03 strike

Key Terms

weighted average price, Employee Stock Option (Right to Buy), derivative security, open-market sale, +1 more

5 terms

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.

Employee Stock Option (Right to Buy) financial

"security_title: "Employee Stock Option (Right to Buy)""

derivative security financial

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

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Ordinary Shares financial

"security_title: "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.

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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^*

Parisi Samuel Joseph

(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)
	VP, Finance (Interim PAO)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

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	05/29/2026		M		3,392	A	$20.03	11,109	D
Ordinary Shares	05/29/2026		M		12,825	A	$19.34	23,934	D
Ordinary Shares	05/29/2026		S		16,217	D	$42.3634(1)	7,717	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)	$20.03	05/29/2026		M			3,392	(2)	02/20/2030	Ordinary Shares	3,392	$0	3,394	D
Employee Stock Option (Right to Buy)	$19.34	05/29/2026		M			12,825	(2)	02/22/2031	Ordinary Shares	12,825	$0	12,826	D

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $42.245 to $42.50. 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.

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

	/s/ Shantale Greenson, attorney-in-fact for Samuel Joseph Parisi	05/29/2026
	** 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)

FAQ

What insider transaction did Alkermes (ALKS) report for Samuel Joseph Parisi?

Alkermes reported that VP of Finance (Interim PAO) Samuel Joseph Parisi exercised employee stock options for 16,217 Ordinary Shares and sold all 16,217 shares in open-market transactions on May 29, 2026, while retaining a direct holding of 7,717 shares afterward.

How many Alkermes (ALKS) shares did Samuel Parisi sell, and at what price?

Samuel Parisi sold 16,217 Alkermes Ordinary Shares in open-market trades at a weighted average price of $42.3634 per share, with individual sale prices ranging from $42.245 to $42.50, according to the Form 4 filing for transactions on May 29, 2026.

What stock options did Samuel Parisi exercise in the Alkermes (ALKS) Form 4?

Parisi exercised employee stock options covering 12,825 Ordinary Shares at a $19.34 exercise price and 3,392 Ordinary Shares at a $20.03 exercise price. These options were fully vested in accordance with their terms, and all resulting 16,217 shares were subsequently sold on May 29, 2026.

How many Alkermes (ALKS) shares does Samuel Parisi own after the reported transactions?

After exercising options and selling 16,217 shares, Samuel Parisi directly holds 7,717 Alkermes Ordinary Shares. The Form 4 specifies this post-transaction ownership figure, giving investors a clear view of his remaining equity position following the May 29, 2026 trades.

Were the Alkermes (ALKS) insider sales by Samuel Parisi executed at a single price?

No. The Form 4 states the reported price is a weighted average of $42.3634 per share. The 16,217 Ordinary Shares were sold in multiple transactions, with prices ranging between $42.245 and $42.50, and detailed trade breakdowns are available upon request.