Insider plans 15,500-share Rule 144 stock sale

This notice reports a planned sale under Rule 144 of 15,500 shares of common stock through Morgan Stanley Smith Barney on the NASDAQ, with an aggregate market value of $227,593.

Rhea-AI Filing Summary

This notice reports a planned sale under Rule 144 of 15,500 shares of common stock through Morgan Stanley Smith Barney on the NASDAQ, with an aggregate market value of $227,593. The issuer had 3,363,965 shares outstanding at the time noted.

The securities to be sold were acquired on 02/02/2026 through the vesting of 31,667 restricted stock units. Over the prior three months, the same holder sold additional common shares, including 136,193 shares on 01/15/2026, 7,715 shares on 01/06/2026, and 1,974 shares on 01/16/2026, for disclosed gross proceeds. The signer confirms they are not aware of undisclosed material adverse information about the issuer.

FAQ

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

What does the Form 144 filing for AMLX disclose?

The Form 144 filing discloses a planned sale of 15,500 common shares through a broker on the NASDAQ. It also lists prior sales over the past three months and confirms the signer knows no undisclosed material adverse information about the issuer.

How many AMLX shares are planned to be sold under this Form 144?

The filing shows a planned sale of 15,500 shares of common stock with an aggregate market value of $227,593. These shares are to be sold through Morgan Stanley Smith Barney LLC on the NASDAQ exchange around 02/02/2026.

How were the AMLX shares in this Form 144 acquired?

The shares were acquired through the vesting of 31,667 restricted stock units on 02/02/2026. The filing identifies the issuer as the source of these shares and notes that the vesting event served as the acquisition and payment date.

What prior AMLX share sales are listed in the last three months?

The notice lists three prior common stock sales: 7,715 shares sold on 01/06/2026, 136,193 shares sold on 01/15/2026, and 1,974 shares sold on 01/16/2026, each with corresponding gross proceeds disclosed in dollars.

How many AMLX shares were outstanding when this Form 144 was prepared?

The filing reports 3,363,965 shares of common stock outstanding. This figure provides context for the relative size of the planned Rule 144 sale compared with the issuer’s total share count at the referenced time.

What representation does the seller make in this AMLX Form 144?

The signer represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed, consistent with Rule 144 requirements for sales by affiliates or other covered persons.

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	0001898644
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	Cohen Joshua B
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
Relationship to Issuer	Director

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	15500	227593	3363965	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			31667	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Cohen Joshua B 55 Cambridge Parkway Suite 6W Cambridge MA 02142	Common	01/16/2026	1974	27299
Cohen Joshua B 55 Cambridge Parkway Suite 6W Cambridge MA 02142	Common	01/15/2026	136193	1850795
Cohen Joshua B 55 Cambridge Parkway Suite 6W Cambridge MA 02142	Common	01/06/2026	7715	85596

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