$6.5M Amylyx Securities Settlement — Claim by Aug 31, 2026

Amylyx Pharmaceuticals AMLX securities class action settlement — $6.5 million for 2022–2023 stock investors

Published: June 9, 2026

Status Claims Open

Claim Deadline August 31, 2026 final approval hearing September 10, 2026 at 11:00 a.m. · opt-out by August 11, 2026 · object by August 24, 2026

Estimated Payout ~$0.16 net per damaged share (avg) $6,500,000 cash fund · pro rata by Recognized Loss · no payment under $10.00

Proof Required Yes brokerage records of your AMLX purchases, sales & holdings

What Is the Amylyx Securities Settlement About?

Did you buy or otherwise acquire Amylyx Pharmaceuticals, Inc. securities (NASDAQ: AMLX) between November 11, 2022 and November 8, 2023? A $6,500,000 cash settlement has been reached in the securities class action Shih v. Amylyx Pharmaceuticals, Inc., et al., and you may be eligible to file a claim for a share of the fund. The deadline to submit a Proof of Claim form is August 31, 2026.

The case is pending in the United States District Court for the District of Massachusetts, Case No. 1:24-cv-12068-NMG. The lawsuit alleges that Amylyx and several of its executives violated the federal securities laws by making materially false and misleading statements about the success of the U.S. launch of AMX0035 — commercially known as Relyvrio — its treatment for amyotrophic lateral sclerosis (ALS). According to the complaint, those statements artificially inflated the price of Amylyx securities, and when the truth was revealed, the stock price fell and investors were damaged.

Amylyx and the individual defendants deny any wrongdoing and any liability whatsoever. The Court has not decided in favor of either side — the settlement is a compromise that ends the litigation and provides a guaranteed cash recovery for the class. The Settlement Amount of $6,500,000 will earn interest and be reduced by Court-approved attorneys' fees, litigation expenses, a compensatory award to the plaintiff, notice and administration costs, and any taxes on interest before being distributed to eligible claimants.

Who Qualifies for the Settlement Class?

The Settlement Class includes all persons and entities who purchased or otherwise acquired Amylyx securities during the Settlement Class Period — from November 11, 2022 through November 8, 2023, inclusive — and who were allegedly damaged.

During the Settlement Class Period, Amylyx common stock traded on the NASDAQ under the ticker symbol AMLX (CUSIP 03237H101).

Certain parties are excluded from the Settlement Class, including: the defendants; the officers and directors of Amylyx who served in their roles during the Settlement Class Period; the immediate family members, legal representatives, heirs, agents, affiliates, successors, and assigns of those excluded persons; the defendants' liability insurance carriers and their affiliates or subsidiaries; any entity in which the defendants or their immediate families have or had a controlling interest; and anyone who validly and timely requests exclusion from the class.

Receiving a notice does not automatically mean you are a class member or that you will receive money. The parties do not have access to your individual trading records, so you must check your own brokerage statements (or contact your broker) to confirm your AMLX transactions, and you must submit a Proof of Claim form to be eligible for a payment.

How Much Can You Get?

Your payment depends on several factors, including when you bought and sold your Amylyx shares, the prices you paid and received, and the total Recognized Losses of all valid claims filed. Because the money is divided proportionally, no one can tell you an exact amount in advance.

The notice provides estimates to give class members a sense of scale, based on approximately 27.1 million damaged shares:

• Estimated average gross recovery: about $0.24 per share.
• Estimated average net recovery (after attorneys' fees, expenses, and other deductions): about $0.16 per share.

These figures are estimates only and are not a promise of what you will receive. Your actual recovery is calculated under the Court-approved Plan of Allocation, which assigns a "Recognized Loss" to each eligible share based on when it was purchased and sold relative to the alleged inflation and the corrective disclosure period. The Plan applies the first-in, first-out (FIFO) method to match purchases and sales, and incorporates the Private Securities Litigation Reform Act's 90-day "look-back" rule, which uses a mean closing price of $14.54 per share for shares held through February 6, 2024.

After all claims are processed and the Court grants final approval, each authorized claimant receives a pro rata share of the Net Settlement Fund equal to their Recognized Loss divided by the total Recognized Losses of all claimants. The settlement administrator will not issue any distribution of less than $10.00.

What Did Amylyx Allegedly Do?

Amylyx is a pharmaceutical company whose lead product, AMX0035, was marketed in the United States as Relyvrio for the treatment of ALS. The complaint focuses on the company's public statements during late 2022 and 2023 about how successfully Relyvrio was launching and how strong demand for the drug really was.

Plaintiff alleges that Amylyx and the individual defendants made an overly optimistic picture of the Relyvrio launch, which kept the AMLX stock price artificially high. According to the operative Amended Class Action Complaint, when the true facts were revealed, those disclosures caused the price of Amylyx securities to drop, removing the alleged inflation and causing losses to investors who had bought during the Settlement Class Period.

The case never went to trial. Instead, both sides agreed to settle to avoid the expense, distraction, and uncertainty of continued litigation. The defendants continue to deny all allegations of wrongdoing, and the settlement is not an admission of liability by anyone.

How to File an Amylyx Claim

To receive a payment, you must submit a Proof of Claim and Release Form. There are two ways to file, both with the same August 31, 2026 deadline:

Method 1: Online. Complete and submit the Proof of Claim form electronically through the official Settlement Website by 11:59 p.m. Eastern Time on August 31, 2026.

Method 2: U.S. Mail. Download the printable Proof of Claim form from the official Settlement Website, complete it, attach your supporting documentation, and mail it to the Claims Administrator so that it is postmarked no later than August 31, 2026.

Before you file, gather your brokerage records. Your Proof of Claim form asks you to list and document, in chronological order:

• The number of AMLX shares you held at the close of trading on November 10, 2022.
• Every purchase or acquisition of Amylyx common stock from November 11, 2022 through February 6, 2024 (trade date, number of shares, and price per share).
• Every sale or disposition of Amylyx common stock over the same period.
• The number of AMLX shares you held at the close of trading on February 6, 2024.

Brokerage confirmations or monthly account statements showing trade dates, share quantities, and prices are the documents the administrator typically accepts. Keep copies of everything you submit.

Claim Form Website: StrategicClaims.net/Amylyx

Submit Claim

Key Amylyx Settlement Deadlines

• Settlement Class Period: November 11, 2022 through November 8, 2023 (inclusive)
• Exclusion (opt-out) deadline: received by August 11, 2026
• Objection deadline: received by the Court and counsel by August 24, 2026
• Proof of Claim deadline: submitted online or postmarked by August 31, 2026
• Final Approval Hearing: September 10, 2026 at 11:00 a.m., U.S. District Court for the District of Massachusetts, John Joseph Moakley U.S. Courthouse, 1 Courthouse Way, Boston, MA

The Court may change the date or time of the Final Approval Hearing, or hold it remotely, without further mailed notice. Check the official Settlement Website before the hearing if you plan to attend.

When Will Payments Be Made?

Payments cannot be made until after the Court approves the settlement at the September 10, 2026 hearing and the approval becomes final. If anyone appeals, distribution can be delayed — sometimes by more than a year — and it also takes time for all Proof of Claim forms to be processed. There is no fixed payment date; the notice asks class members to be patient.

Your Options: Claim, Exclude Yourself, Object, or Do Nothing

As a Settlement Class Member, you have several choices, each with consequences:

• Submit a Proof of Claim form — the only way to receive a payment. Deadline: August 31, 2026.
• Exclude yourself (opt out) — you receive no payment but keep the right to sue the defendants separately about the released claims. A written request with documentation of your AMLX transactions must be received by August 11, 2026. You cannot opt out by phone or email.
• Object — stay in the class but tell the Court in writing why you disagree with the settlement, the Plan of Allocation, or the fee request. Objections must be received by August 24, 2026.
• Do nothing — you receive no payment and, unless you opt out, you are still bound by the settlement and give up your right to sue over the released claims.

Attorneys' Fees and Expenses

Lead Counsel, Pomerantz LLP, will ask the Court to award attorneys' fees of up to one-third (33⅓%) of the Settlement Amount, plus interest. They will also request reimbursement of litigation expenses of up to $100,000, plus interest, and a compensatory award to the plaintiff of up to $2,500 in total. The Court may award less than these amounts, and any amounts approved come out of the Settlement Fund. Collectively, those requested deductions are estimated to average roughly $0.08 per share.

Watch Out for Settlement Scams

With any securities settlement, be cautious about how you file and who you share information with:

• Use the official Settlement Website only: StrategicClaims.net/Amylyx. Bookmark it, and be wary of emails or texts linking to a similar-looking page on a different domain.
• Never pay a fee. Legitimate class action settlements never charge an activation, release, or processing fee to send you your money.
• Share only what is needed. The Claims Administrator needs your transaction documentation and contact details — not banking passwords or unrelated personal data.
• If you lost your notice or need help, use the contact form on the official Settlement Website rather than responding to unsolicited messages.

Frequently Asked Questions About the Amylyx Settlement

What is the Amylyx Pharmaceuticals securities settlement?

A $6,500,000 cash settlement resolving Shih v. Amylyx Pharmaceuticals, Inc., et al., No. 1:24-cv-12068-NMG, in the U.S. District Court for the District of Massachusetts. The lawsuit alleged Amylyx and several executives made misleading statements about the launch of AMX0035 (sold as Relyvrio) for ALS, artificially inflating the AMLX stock price. Defendants deny any wrongdoing.

Who is included in the Amylyx Settlement Class?

All persons and entities who purchased or otherwise acquired Amylyx Pharmaceuticals securities (NASDAQ: AMLX) from November 11, 2022 through November 8, 2023, inclusive, and were allegedly damaged. Defendants, Amylyx officers and directors and their immediate families, and certain related parties are excluded.

How much money can I get from the Amylyx settlement?

Your payment depends on when you bought and sold AMLX shares, your prices, and the total valid claims filed. The notice estimates an average recovery of about $0.24 per share before deductions and roughly $0.16 per share after attorneys' fees and expenses. These are estimates only; your actual recovery is calculated under the court-approved Plan of Allocation, and no payment under $10.00 will be distributed.

What is the deadline to file an Amylyx claim?

Proof of Claim forms must be submitted online or postmarked by 11:59 p.m. ET on August 31, 2026. Requests for exclusion must be received by August 11, 2026, and objections by August 24, 2026. The Court will hold a Final Approval Hearing on September 10, 2026 at 11:00 a.m.

What proof do I need to file an Amylyx claim?

Yes, documentation is required. You must list and document each purchase and sale of Amylyx common stock during the relevant periods, plus your holdings as of November 10, 2022 and February 6, 2024. Brokerage confirmations or account statements showing trade dates, share quantities, and prices are the typical supporting documents.

What happens if I do nothing?

If you do nothing, you will not receive a payment, and unless you exclude yourself, you will still be bound by the settlement and give up your right to sue the defendants over the released claims. The only way to receive money is to submit a valid Proof of Claim form by August 31, 2026.

Official Settlement Notice

Sources

• Notice of Pendency and Proposed Settlement of Class Action, Shih v. Amylyx Pharmaceuticals, Inc., et al., No. 1:24-cv-12068-NMG (D. Mass.)
• Proof of Claim and Release Form, Amylyx Pharmaceuticals, Inc. Securities Litigation
• Official Settlement Website: StrategicClaims.net/Amylyx
• Lead Counsel: Pomerantz LLP
• Defendants' Counsel: Goodwin Procter LLP

Filing Class Action Settlement Claims

Please submit only truthful information through the official Settlement Website, and document your AMLX transactions accurately. The official Settlement Website is the authoritative source for benefit amounts, deadlines, and filing instructions. If you are unsure whether you qualify, contact the Claims Administrator through the Settlement Website. OpenClassActions.com is a consumer news site and is not the Claims Administrator, Lead Counsel, or a law firm, and we do not process or decide claims.

Settlement Amount $6,500,000

Case Title Shih v. Amylyx Pharmaceuticals, Inc., et al.

Case Number 1:24-cv-12068-NMG

Court U.S. District Court, District of Massachusetts

Class Period November 11, 2022 – November 8, 2023

Claim Deadline August 31, 2026

Final Approval Hearing September 10, 2026 at 11:00 a.m. Moakley U.S. Courthouse, 1 Courthouse Way, Boston, MA

Lead Counsel Pomerantz LLP

Administrator Strategic Claims Services

Official Website Strategic Claims.net/Amylyx

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