Amylyx Pharmaceuticals, Inc. Securities Litigation Online Claim Form

This form allows you to file your claim online securely through our website. If you wish to file a paper claim or review any of the documents related to this case, please click the Notice of Pendency and Proposed Settlement of Class Action and Proof of Claim and Release Form; link found in the Important Documents section of the case page.

Before you begin
Please have the following items ready to go before you begin filing your online claim form; it will make the process easier for you.
• You should have copies of your statements for the relevant date ranges so that you can enter your transactions.
• You should have copies of these statements scanned and saved on your computer so that you can upload them as proof. We prefer files in PDF format, but we can accept most file formats.

Step 1 – General Instructions
Please read this important information about the case. It provides important details you should understand before you file your claim.

Step 2 – Claimant Information
Please enter your current contact information to assist us in identifying your claim and contacting you for additional information and updates. We recommend you turn off auto-fill settings in your browser to ensure incorrect information is not added by mistake. You will receive a confirmation email that we received your claim at the email address you provide. Double check the information before you click next as you will not have the opportunity to review it again prior to submitting.

Step 3 – Schedule of Transactions
Please read the instructions carefully and enter your relevant transactions. You need to ensure that your number of shares in beginning holdings plus purchases/acquisitions minus sales and minus ending holdings equals zero. This is to ensure that all relevant transactions are accounted for. The form will not allow you to continue until all outstanding shares are accounted for.

Step 4 – Documentation
Please drag and drop your files or click select files and choose the files that you will provide as proof of your transactions. Broker statements are usually the best documents to use as proof. Please note that when the file upload completes, the file name will be listed below the upload box. You can click the red x to remove the file if it was added in error.

Step 5 – Release and Certification
Please read the Release and Certification. By typing your name and date in these fields, you are signing the document and certifying that everything is true, correct and complete. After you click the submit button, you will receive a confirmation that your claim was submitted. You will also receive a confirmation number, please record this number for future reference.

After submitting your claim
Within a few minutes of submitting your claim, you will receive a confirmation email from us that contains your Form ID along with the information you submitted. If you need to make any amendments to your claim; please reference the Form ID you received.

Deadline for Submission: August 31, 2026

If you purchased or otherwise acquired Amylyx Pharmaceuticals, Inc. (“Amylyx” or the “Company”) securities during the period from November 11, 2022, through November 8, 2023, inclusive (the “Settlement Class Period”), you may be a “Settlement Class Member” and you may be entitled to share in the Net Settlement Fund. (Excluded from the Settlement Class are Defendants; the officers and directors of Amylyx who served in their role between November 11, 2022 and November 8, 2023; members of their immediate families and their legal representatives, heirs, agents, affiliates, successors or assigns; Defendants’ liability insurance carriers, and any affiliates or subsidiaries thereof; any entity in which Defendants or their immediate families have or had a controlling interest between November 11, 2022 and November 8, 2023; and those persons who exclude themselves by submitting a request for exclusion from the Settlement Class that is accepted by the Court.)

If you are a Settlement Class Member, in order to be eligible for any Settlement benefits, you must complete and submit the electronic version of this Proof of Claim and Release Form (“Proof of Claim”) through the Settlement website at www.strategicclaims.net/Amylyx/ no later than 11:59 p.m. ET on August 31, 2026, or you may alternatively complete and sign this Proof of Claim and mail it by first class mail, postmarked no later than August 31, 2026, to Strategic Claims Services, the Claims Administrator, at the following address:

Your failure to submit your Proof of Claim by August 31, 2026 will subject your claim to rejection and preclude you from receiving any money in connection with the Settlement of this Action. Do not mail or deliver your Proof of Claim to the Court or to any of the parties or their counsel, as any such claim will be deemed not to have been submitted. Submit your claim only to the Claims Administrator. If you are a Settlement Class Member and do not submit a proper Proof of Claim, you will not share in the Settlement, but you nevertheless will be bound by the Final Judgment of the Court unless you exclude yourself. Submission of a Proof of Claim does not assure that you will share in the proceeds of the Settlement.

CLAIMANT’S STATEMENT

1. 1. I (we) purchased or otherwise acquired securities of Amylyx Pharmaceuticals, Inc. (“Amylyx”) between November 11, 2022 and November 8, 2023, inclusive (“the Settlement Class Period”). (Do not submit this Proof of Claim if you did not purchase Amylyx securities during the Settlement Class Period.)


2. 2. By submitting this Proof of Claim, I (we) state that I (we) believe in good faith that I am (we are) a Settlement Class Member(s) as defined above and in the Notice of Pendency and Proposed Settlement of Class Action (the “Notice”), or am (are) acting for such person(s); that I am (we are) not a Defendant(s) in the Action or anyone excluded from the Settlement Class; that I (we) have read and understand the Notice; that I (we) believe that I am (we are) entitled to receive a share of the Net Settlement Fund, as defined in the Notice; that I (we) elect to participate in the proposed Settlement described in the Notice; and that I (we) have not filed a request for exclusion. (If you are acting in a representative capacity on behalf of a Settlement Class Member [e.g., as an executor, administrator, trustee, or other representative], you must submit evidence of your current authority to act on behalf of that Settlement Class Member. Such evidence would include, for example, letters testamentary, letters of administration, or a copy of the trust documents.)


3. 3. I (we) consent to the jurisdiction of the Court with respect to all questions concerning the validity of this Proof of Claim. I (we) understand and agree that my (our) claim may be subject to investigation and discovery under the Federal Rules of Civil Procedure, provided that such investigation and discovery shall be limited to my (our) status as a Settlement Class Member(s) and the validity and amount of my (our) claim. No discovery shall be allowed on the merits of the Action or Settlement in connection with processing of the Proof of Claim.


4. 4. I (we) have set forth where requested below all relevant information with respect to each purchase and/or acquisition of Amylyx securities, and each sale, if any, of such securities. I (we) agree to furnish additional information to the Claims Administrator to support this claim if requested to do so.


5. 5. I (we) have provided photocopies or scanned stockbroker’s confirmation slips, stockbroker’s statements, or other documents evidencing each purchase, acquisition, and sale of Amylyx securities listed below in support of my (our) claim. (IF ANY SUCH DOCUMENTS ARE NOT IN YOUR POSSESSION, PLEASE OBTAIN A COPY OR EQUIVALENT DOCUMENTS FROM YOUR BROKER OR TAX ADVISOR BECAUSE THESE DOCUMENTS ARE NECESSARY TO PROVE AND PROCESS YOUR CLAIM. DO NOT SEND STOCK CERTIFICATES.)


6. 6. I (we) understand that the information contained in this Proof of Claim is subject to such verification as the Claims Administrator may request or as the Court may direct, and I (we) agree to cooperate in any such verification. (The information requested herein is designed to provide the minimum amount of information necessary to process most simple claims. The Claims Administrator may request additional information as required to efficiently and reliably calculate your Recognized Loss. In some cases, the Claims Administrator may condition acceptance of the claim based upon the production of additional information, including, where applicable, information concerning transactions in any derivatives securities such as options.)


7. 7. NOTICE REGARDING ELECTRONIC FILES: Representatives with the authority to file on behalf of (a) accounts of multiple persons and/or (b) institutional accounts with large numbers of transactions (“Representative Filers”) must submit information regarding their clients’ transactions in the approved electronic spreadsheet format, which is available by request to the Claims Administrator at efile@strategicclaims.net or by visiting the website www.strategicclaims.net/Amylyx/. One spreadsheet may contain the information for multiple persons and institutional accounts, but all Representative Filers MUST also submit a manually signed Proof of Claim, as well as proof of authority to file (see Item 2 of the Claimant’s Statement) along with the electronic spreadsheet. Any file not submitted in accordance with the required electronic filing format will be subject to rejection. No claims submitted in electronic spreadsheet format will be considered to have been properly submitted unless the Claims Administrator issues to the Claimant a written acknowledgment of receipt and acceptance of electronically submitted data. Do not assume that the file has been received or processed until the Claims Administrator sends a confirmation email. If you do not receive such an email within 10 days of submission, please contact the electronic filing department at efile@strategicclaims.net to inquire about the file and confirm it was received and acceptable.


8. 8. NOTICE REGARDING ONLINE FILING: Claimants who are not Representative Filers may submit their claims online using the electronic version of the Proof of Claim hosted at www.strategicclaims.net/Amylyx/. If you are not acting as a Representative Filer, you do not need to contact the Claims Administrator prior to filing; you will receive an automated e-mail confirming receipt once your Proof of Claim has been submitted. If you are unsure if you should submit your claim as a Representative Filer, please contact the Claims Administrator at info@strategicclaims.net or (866) 274-4004. If you are not a Representative Filer, but your claim contains a large number of transactions, the Claims Administrator may request that you also submit an electronic spreadsheet showing your transactions to accompany your Proof of Claim.