AMLX insider plans Rule 144 sale of 3,448 shares

AMLX filed a notice under Rule 144 for a planned sale of restricted shares.

Rhea-AI Filing Summary

AMLX filed a notice under Rule 144 for a planned sale of restricted shares. The filing covers the proposed sale of 3,448 shares of common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of 50,515, on or about 02/02/2026 on NASDAQ. The issuer reports 144,693 shares of this class outstanding. The shares to be sold were acquired from the issuer on 02/02/2026 through the vesting of 9,167 restricted stock units, with no separate cash payment required.

FAQ

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

What does the AMLX Rule 144 filing disclose about upcoming share sales?

The filing discloses a planned sale of 3,448 AMLX common shares under Rule 144. These shares, valued in total at 50,515, are expected to be sold on or about 02/02/2026 on NASDAQ through Morgan Stanley Smith Barney LLC.

How many AMLX shares are outstanding according to this Rule 144 notice?

The notice states that 144,693 shares of AMLX common stock are outstanding. This figure provides context for the planned sale of 3,448 shares and helps investors understand the relative size of the potential transaction in relation to the total share count.

How were the AMLX shares being sold under Rule 144 originally acquired?

The shares were acquired through the vesting of restricted stock units on 02/02/2026. The filing notes that 9,167 AMLX common shares were obtained from the issuer via this vesting event, with the nature of payment described as N/A rather than a separate cash purchase.

Which broker is handling the AMLX Rule 144 share sale and on which market?

The sale will be handled by Morgan Stanley Smith Barney LLC, located at 1 New York Plaza, 8th Floor, New York, NY 10004. The 3,448 AMLX common shares are expected to be sold on the NASDAQ market, as indicated in the filing.

What is the aggregate market value of AMLX shares to be sold under this notice?

The filing lists an aggregate market value of 50,515 for the 3,448 AMLX common shares to be sold. This figure reflects the total value of the planned transaction at the time of the notice, based on the market price used in the form.

Does the AMLX Rule 144 filer mention recent sales in the past three months?

The section requesting information on AMLX securities sold during the past three months is included but not populated with specific transactions. The form instead focuses on the newly acquired shares from restricted stock unit vesting and the planned 3,448-share sale described in the notice.

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

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Accepted by SEC EDGAR 02/02/2026 - 04:10 PM EST 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	0001913765
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Amylyx Pharmaceuticals, Inc.
SEC File Number	001-41199
Address of Issuer	55 Cambridge Parkway Suite 6W Cambridge MASSACHUSETTS 02142
Phone	617-682-0917
Name of Person for Whose Account the Securities are To Be Sold	Mazzariello Gina
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	Officer

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	Morgan Stanley Smith Barney LLC 1 New York Plaza 8th Floor New York NY 10004	3448	50515	144693	02/02/2026	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	02/02/2026	Vesting of Restricted Stock Units	Issuer			9167	02/02/2026	N/A

* 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

Nothing to Report

144: Remarks and Signature

Remarks	This sale represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.
Date of Notice	02/02/2026
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	/s/ Joshua B. Cohen, as Attorney in Fact
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)