Alkermes plc (ALKS) notice: David Gaffin lists proposed Common Stock sales in 2026

Rhea-AI Filing Summary

Alkermes plc files a notice of proposed sale of Common Stock under Rule 144 by a selling holder. The excerpt lists proposed sales by David Gaffin of 70,315.38, 67,528.80 and 87,563.70 on 04/06/2026, 05/04/2026 and 06/04/2026, respectively.

Insights

Securities Counsel

Rule 144 notices show proposed restricted-holder sales, not necessarily completed trades.

These entries are Form 144 disclosures listing proposed sales of Common Stock by David Gaffin with specific dates and numeric quantities. Form 144 is a transfer notice under Rule 144 and does not by itself confirm execution or settlement of the sales.

Timing and cash‑flow treatment are not shown in the excerpt; subsequent filings or broker confirmations would report completed transactions if and when they occur.

Key Figures

Proposed sale (Apr 6): 70,315.38 Proposed sale (May 4): 67,528.80 Proposed sale (Jun 4): 87,563.70 +2 more

5 metrics

Proposed sale (Apr 6) 70,315.38 Proposed sale date <date>04/06/2026</date>

Proposed sale (May 4) 67,528.80 Proposed sale date <date>05/04/2026</date>

Proposed sale (Jun 4) 87,563.70 Proposed sale date <date>06/04/2026</date>

Form type Form 144 notice Rule 144 proposed resale notice

Vesting award examples 337; 954; 743 shares Vesting dates <date>03/03/2015</date>, <date>10/05/2016</date>, <date>02/26/2017</date>

Key Terms

Form 144, Rule 144, restricted stock unit

3 terms

Form 144 regulatory

"lists proposed sales by a selling holder under Rule 144"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Rule 144 regulatory

"notice of proposed sale of Common Stock under Rule 144 by a selling holder"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock unit financial

"Vesting of restricted stock unit award granted as part of issuer equity compensation plan"

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.

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Available on EDGAR 07/06/2026 - 04:18 PM Accepted by SEC EDGAR 07/06/2026 - 04:18 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Merrill Lynch 225 Liberty Street Floor 37 New York NY 10281	2034	109897.02	166675807	07/06/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	03/03/2015	Vesting of restricted stock unit award	Alkermes plc.			337	03/03/2015	Granted as part of issuer equity compensation plan
Common Stock	10/05/2016	Vesting of performance share unit awards	Alkermes plc.			954	10/05/2016	Granted as part of issuer equity compensation plan
Common Stock	02/26/2017	Vesting of restricted stock unit award	Alkermes plc.			743	02/26/2017	Granted as part of issuer equity compensation plan

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
David Gaffin CONNAUGHT HOUSE 1 BURLINGTON ROAD DUBLIN 4 L2 00000	Common Stock	04/06/2026	2034	70315.38
David Gaffin CONNAUGHT HOUSE 1 BURLINGTON ROAD DUBLIN L2 00000	Common Stock	05/04/2026	2034	67528.80
David Gaffin CONNAUGHT HOUSE 1 BURLINGTON ROAD DUBLIN L2 00000	Common Stock	06/04/2026	2034	87563.70

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Alkermes plc Form 144 filing mean for ALKS shareholders?

It notifies the SEC of proposed sales of Common Stock by an affiliated holder. The filing lists proposed sale quantities and dates but does not confirm completion or settlement of those sales.

Who is the selling holder named in the ALKS Form 144 excerpt?

The selling holder named is David Gaffin. The excerpt shows entries associated with his address and three proposed sale dates of Common Stock in 2026.

What quantities and dates are listed in the ALKS Form 144 excerpt?

The excerpt lists proposed sales on 04/06/2026 for 70,315.38, 05/04/2026 for 67,528.80, and 06/04/2026 for 87,563.70. The filing uses those numeric values as shown.

Does Form 144 report whether Alkermes receives proceeds from these sales?

No. The excerpt lists selling-holder proposed sales only. It does not state who receives proceeds or indicate whether the issuer will receive any proceeds from the listed transactions.

Are the listed securities in the ALKS excerpt from equity compensation awards?

Yes. The excerpt shows entries labeled as vesting of restricted stock units and performance share unit awards granted on 03/03/2015, 10/05/2016, and 02/26/2017 and associated share counts.