Arqit Quantum $7 Million Securities Settlement, Three Classes of Investors May Be Owed Money — Claim Deadline June 22, 2026

Arqit Quantum Inc. and several of its directors and officers have agreed to pay $7 million to settle a federal securities class action lawsuit accusing them of making false and misleading statements about the company’s quantum encryption technology, business prospects, and financial condition. 

The lawsuit alleged that these misrepresentations inflated the prices of Arqit securities and caused investor losses when corrective information entered the market on April 18, 2022 and December 14, 2022. Unlike most securities settlements where payments are automatic, you must file a claim to receive money from this settlement. The deadline is June 22, 2026 — after that, no claims will be accepted under any circumstances.

Quick Facts

• Case name: In re Arqit Quantum Inc. Securities Litigation | Case No. 1:22-cv-02604-PKC-SDE
• Court: US District Court, Eastern District of New York
• Settlement amount: $7,000,000
• Estimated average recovery: Approximately $0.23 per Arqit ordinary share and $0.05 per warrant before deductions
• Who qualifies: Three separate investor classes — Section 14(a), Section 10(b), and Securities Act purchasers
• ⚠️ Claim required: You MUST file a claim form to receive payment
• Claim deadline: June 22, 2026 — online or postmarked by mail
• Objection deadline: May 11, 2026
• Settlement hearing: June 1, 2026 at 2:00 p.m.
• Official settlement website: ArqitSecuritiesSettlement.com
• Settlement administrator: Kroll Settlement Administration | 877-370-7703 | [email protected]
• Mailing address: Arqit Quantum Inc. Securities Litigation, c/o Kroll Settlement Administration LLC, PO Box 225391, New York, NY 10150-5391

What Did Arqit Quantum Actually Do?

Arqit is a UK-based cybersecurity company that went public in the United States through a SPAC merger with Centricus Acquisition Corp. in 2021. The company markets itself as a global leader in quantum-safe encryption — software designed to protect data against future quantum computing attacks.

The lawsuit alleged Arqit Quantum and certain individual defendants made materially false and misleading statements and omissions regarding the company’s quantum encryption technology, business prospects, and financial condition in connection with the merger with Centricus Acquisition Corp. and the subsequent Arqit securities offering.

In plain terms: investors say Arqit painted an overly optimistic picture of how developed and commercially viable its technology actually was. When the reality became clearer — first on April 18, 2022, and again on December 14, 2022 — the stock dropped sharply, causing significant losses for shareholders who had bought in based on those earlier representations.

The defendants denied all allegations of wrongdoing but agreed to settle to avoid the uncertainty, costs and delays of continued litigation.

Which Class Do You Fall Into?

This is the most critical section — because your class determines which purchases qualify and what you can claim. The settlement includes three separate investor classes and each separate legal entity or separately managed account must submit a separate claim.

Class One — Section 14(a) Class You qualify if you were a beneficial holder of Centricus Acquisition Corp. Class A ordinary shares or Centricus units as of the July 26, 2021 record date for the special shareholder meeting held on August 31, 2021 to vote on the merger with Arqit.

This class covers original Centricus SPAC investors who held shares at the time the merger vote was held.

Class Two — Section 10(b) Class You qualify if you purchased or acquired Arqit ordinary shares or warrants — either in connection with the merger or on a US stock exchange — between September 7, 2021 and December 13, 2022, inclusive.

This is the broadest class and covers most investors who bought ARQQ shares or warrants on the open market during the class period.

Class Three — Securities Act Class You qualify if you purchased or acquired Arqit securities pursuant or traceable to the effective registration statement and prospectus filed with the SEC for the September 2, 2021 Arqit securities offering in connection with the merger.

This class covers investors who bought shares specifically tied to the IPO registration documents.

You may qualify under more than one class. If so, you must file a single claim form covering all applicable transactions — the settlement administrator will calculate your recovery under each class separately.

How Much Will You Receive?

The estimated average recovery is approximately $0.23 per Arqit ordinary share and $0.05 per Arqit warrant before deductions for taxes, administration costs and attorneys’ fees. For Arqit warrants traceable to the offering and held as of the close of trading on April 14, 2023, the recognized loss is $0.66 per warrant.

These are estimates before deductions. After attorneys’ fees and administration costs are taken out, the per-share amount will be lower. If total recognized claims across all claimants exceed the net settlement fund, the settlement administrator will reduce payments on a pro rata basis. Class members whose payment would be less than $10 will not receive a payout.

The more shares you held and the greater your documented loss during the class period, the larger your recovery. Investors who bought early and held through both corrective disclosure dates in April and December 2022 will generally have higher recognized losses than those who sold earlier.

How to File Your Claim — You Must Act Before June 22, 2026

This is not an automatic payment settlement. If you do nothing, you receive nothing — even if you clearly qualify.

To share in the distribution of the settlement fund, you must submit a Claim Form and required documentation electronically through ArqitSecuritiesSettlement.com no later than June 22, 2026, or by mail postmarked no later than June 22, 2026.

What you need to file:

• Your full name, address, and taxpayer ID or last four digits of your Social Security number
• Complete trading records for all Arqit securities purchased, acquired, and sold during the applicable class period — including dates, number of shares or warrants, and transaction prices
• Brokerage statements or trade confirmations as supporting documentation

How to file:

• Online: Visit ArqitSecuritiesSettlement.com and complete the electronic claim form
• By mail: Download the PDF claim form from the settlement website, complete it, and mail to: Arqit Quantum Inc. Securities Litigation, c/o Kroll Settlement Administration LLC, PO Box 225391, New York, NY 10150-5391

Questions?

• Phone: 877-370-7703
• Email: [email protected]

If you held Arqit securities through a broker, your brokerage statements are your primary documentation. Most major brokers provide year-end tax documents and trade confirmations that contain all the transaction details you need.

Can You Opt Out or Object?

Opting out — Deadline: May 11, 2026 If you want to preserve your individual right to sue Arqit and its directors over the same securities claims, you can exclude yourself from the settlement by submitting a written opt-out request before May 11, 2026. Opting out means you receive no payment but keep your right to pursue a separate lawsuit.

Given the estimated recovery of roughly $0.23 per share, opting out only makes financial sense if your individual losses are large enough to justify the cost and risk of separate litigation. Most investors are better served by filing a claim.

Objecting — Deadline: May 11, 2026 Any objections must be in writing and filed with the Court and sent to both Plaintiffs’ and Defendants’ Counsel so that they are received no later than May 11, 2026. You cannot opt out of the Class and also object to the Settlement.

When Will Payments Go Out?

The final settlement approval hearing is scheduled for June 1, 2026 at 2:00 p.m. before Judge Pamela K. Chen in the Eastern District of New York. After the court grants final approval and any appeals are resolved, the settlement administrator will process all claims submitted by the June 22 deadline and calculate each claimant’s pro rata share.

Realistically, payments will not go out until late 2026 or early 2027 — securities settlement payment processing typically takes several months after the claim deadline closes.

Key Terms Explained

Section 10(b) Claim: A securities fraud claim under the Securities Exchange Act of 1934 that prohibits companies from making false statements or omitting material facts that mislead investors.

Section 14(a) Claim: A claim involving misleading proxy statements — disclosures sent to shareholders to help them vote on corporate actions like mergers.

Recognized Loss: The legally calculated measure of each investor’s damages under the settlement’s Plan of Allocation — based on when you bought, how many shares you held, and when corrective information entered the market.

FIFO Method: First-in, first-out — the settlement administrator will apply this method to match sales against holdings and purchases when calculating each claimant’s recognized loss.

Plan of Allocation: The court-approved formula that determines how the net settlement fund is divided among all eligible claimants.

If you have filed or are considering filing claims in other open securities settlements, our breakdown of the Celgene $239 million securities settlement — which has a claim deadline of April 13, 2026 — explains how the securities class action claim process works in detail and what documentation you typically need. Investors tracking multiple open SPAC-related securities settlements should also read our coverage of the Rivian $250 million securities settlement with its April 20, 2026 deadline — another case involving alleged investor misrepresentations tied to an EV company’s post-IPO disclosures.

This article is for informational purposes only and does not constitute legal advice. For questions about your eligibility, claim status, or filing process, contact the settlement administrator at 877-370-7703 or visit ArqitSecuritiesSettlement.com.

Sources: In re Arqit Quantum Inc. Securities Litigation, Case No. 1:22-cv-02604-PKC-SDE (E.D.N.Y.) | Official settlement website: ArqitSecuritiesSettlement.com | PR Newswire settlement notice, March 3, 2026 | Kroll Settlement Administration

About the Author

Sarah Klein, JD, is a licensed attorney and legal content strategist with over 12 years of experience across civil, criminal, family, and regulatory law. At All About Lawyer, she covers a wide range of legal topics — from high-profile lawsuits and courtroom stories to state traffic laws and everyday legal questions — all with a focus on accuracy, clarity, and public understanding.
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