Alkermes (ALKS) director Snyderman exercises RSUs and receives new stock option grant

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Alkermes plc. director Nancy Lynn Snyderman, MD reported routine equity compensation activity and related tax withholding. On May 21, 2026, she exercised a previously granted restricted stock unit award for 6,142 ordinary shares, and 1,475 shares were disposed of to cover tax obligations, not as an open-market sale.

On May 20, 2026, she received new equity awards: 5,409 restricted stock units, each representing the right to one ordinary share, and a non qualified stock option for 11,538 ordinary shares with a $36.98 exercise price expiring in 2036. A separate entry shows 20,783 ordinary shares held indirectly through the Nancy Lynn Snyderman Revocable Trust, where she is sole trustee and sole beneficiary.

Insider Trade Summary

6,142 shares exercised/converted

Mixed 6 txns

Insider snyderman nancy lynn MD

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	--
holding	Ordinary Shares	--	--	--

Holdings After Transaction: Restricted Stock Unit Award — 0 shares (Direct, null); Ordinary Shares — 16,870 shares (Direct, null); Non Qualified Stock Option (Right to Buy) — 11,538 shares (Direct, null); Ordinary Shares — 20,783 shares (Indirect, By the Snyderman Trust)

Footnotes (1)

Each restricted stock unit represents a contingent right to receive one ordinary share. Shares are held by the Nancy Lynn Snyderman Revocable Trust (the "Snyderman Trust"), of which the reporting person is both the sole trustee and sole beneficiary. 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.

Key Figures

RSUs exercised: 6,142 shares Tax-withholding shares: 1,475 shares at $36.95 New RSU grant: 5,409 units +2 more

5 metrics

RSUs exercised 6,142 shares Restricted stock unit award converted into ordinary shares on May 21, 2026

Tax-withholding shares 1,475 shares at $36.95 Shares disposed to cover tax liability on May 21, 2026

New RSU grant 5,409 units Restricted Stock Unit Award granted on May 20, 2026

New stock option grant 11,538 shares at $36.98 Non qualified stock option expiring May 20, 2036

Indirect trust holdings 20,783 shares Ordinary shares held by the Snyderman Trust as of May 20, 2026

Key Terms

Restricted Stock Unit, Non Qualified Stock Option, tax-withholding disposition, derivative security

4 terms

Restricted Stock Unit financial

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

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

Non Qualified Stock Option financial

"Non Qualified Stock Option (Right to Buy) for 11,538 ordinary shares at $36.98."

tax-withholding disposition financial

"Payment of exercise price or tax liability by delivering securities."

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 security financial

"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.

Form 4 Insider Transactions: What Each Field Means →

05/22/2026 - 08:04 PM

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^*

snyderman nancy lynn MD

(Last)

(First)

(Middle)

CONNAUGHT HOUSE

1 BURLINGTON ROAD

(Street)

DUBLIN

4 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)

X	Director	10% 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)

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary Shares	05/21/2026		M		6,142	A	⁽¹⁾	16,870	D
Ordinary Shares	05/21/2026		F		1,475	D	$36.95	15,395	D
Ordinary Shares								20,783	I	By the Snyderman Trust⁽²⁾

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Non Qualified Stock Option (Right to Buy)	$36.98	05/20/2026		A		11,538		⁽³⁾	05/20/2036	Ordinary Shares	11,538	$0	11,538	D
Restricted Stock Unit Award	⁽¹⁾	05/20/2026		A		5,409		⁽³⁾	⁽³⁾	Ordinary Shares	5,409	$0	5,409	D
Restricted Stock Unit Award	⁽¹⁾	05/21/2026		M			6,142	⁽⁴⁾	⁽⁴⁾	Ordinary Shares	6,142	⁽¹⁾	0	D

Explanation of Responses:

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

2. Shares are held by the Nancy Lynn Snyderman Revocable Trust (the "Snyderman Trust"), of which the reporting person is both the sole trustee and sole beneficiary.

3. 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.

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

	/s/ Shantale Greenson, attorney-in-fact for Nancy Snyderman	05/22/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did Alkermes (ALKS) director Nancy Snyderman report?

Nancy Snyderman reported exercising 6,142 restricted stock units into ordinary shares and a related tax-withholding disposition of 1,475 shares. She also received new grants of 5,409 restricted stock units and 11,538 non qualified stock options on May 20–21, 2026.

Were Nancy Snyderman’s Alkermes (ALKS) transactions open-market buys or sells?

No open-market buys or sells were reported. The Form 4 shows an option/RSU exercise, a tax-withholding disposition of 1,475 shares at $36.95, and new equity awards. These are compensation and tax-related events rather than discretionary market trades.

What new equity awards did Nancy Snyderman receive from Alkermes (ALKS)?

She received 5,409 restricted stock units and a non qualified stock option for 11,538 ordinary shares with a $36.98 exercise price, expiring in 2036. Each restricted stock unit represents a contingent right to receive one ordinary share, subject to vesting conditions.

How many Alkermes (ALKS) shares does Nancy Snyderman hold through a trust?

The filing shows 20,783 ordinary shares held indirectly by the Nancy Lynn Snyderman Revocable Trust. She is both sole trustee and sole beneficiary of this trust, so the position is reported as her indirect beneficial ownership in Alkermes shares.

How does the tax-withholding disposition affect Nancy Snyderman’s Alkermes (ALKS) position?

The 1,475-share disposition was to satisfy tax obligations on the equity vesting, not a market sale. This mechanism reduces the gross shares she received from the RSU conversion but is a standard administrative step that does not reflect an active sell decision.

What are the key dates and terms of Nancy Snyderman’s new Alkermes (ALKS) stock option?

The non qualified stock option was granted on May 20, 2026, covering 11,538 ordinary shares at a $36.98 exercise price and expiring on May 20, 2036. The award vests in line with the company’s stated director equity vesting terms.