What does the Calix securities lawsuit allege?

The complaint alleges Calix and certain executives made materially misleading statements that concealed that the company's favorable margins were being propped up by memory components purchased in advance, that this pre-purchased supply was dwindling, and that Calix therefore faced margin pressure. These are unproven allegations.

What is the Calix lead plaintiff deadline?

According to the public investor notices, the deadline to ask the court to be appointed lead plaintiff is July 27, 2026. Being a class member does not require seeking lead-plaintiff status; investors who do nothing may still be part of any class if one is certified.

Do I need to do anything to join the Calix class action?

No. At this stage there is nothing to file. Investors who did nothing would still be part of any class that is eventually certified. Only an investor who wants to seek appointment as lead plaintiff must act by the July 27, 2026 deadline.

Calix Securities Class Action (CALX)

Q: Is there a Calix settlement or claim form for this securities lawsuit?

No. Noor v. Calix, Inc. is a newly filed securities-fraud complaint. There is no certified class, no settlement, and no claim form. The allegations are unproven and Calix has not been found liable.

Q: Who could be covered by the proposed Calix investor class?

The complaint proposes a class of investors who purchased or acquired Calix, Inc. (NYSE: CALX) securities between January 28, 2026 and April 21, 2026, inclusive. Class membership is not finalized; a court must still rule on certification.

Published July 14, 2026

If you bought Calix (CALX) stock between January and April 2026, here is what the investor suit claims — and the July 27 lead-plaintiff deadline that may apply to you.

By Steve Levine

Editor-in-Chief

▼ Allegations Only · No Settlement Yet

This article describes a securities class action complaint. The statements below are unproven allegations. Calix, Inc. has not been found liable, there is no certified class, and nothing to claim at this time. This page is informational and is not legal or investment advice.

What Is This About?

A securities-fraud class action complaint, captioned Noor v. Calix, Inc., et al., No. 5:26-cv-04993, has been filed in the U.S. District Court for the Northern District of California against Calix, Inc. (NYSE: CALX) and certain of its senior officers. The complaint alleges violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 on behalf of investors who purchased Calix securities between January 28, 2026 and April 21, 2026.

Calix is a broadband-technology company that sells cloud, software, and systems to communications service providers. The complaint alleges that, throughout the class period, Calix and its executives made materially misleading statements about the company's margins — allegedly failing to disclose that its favorable margins were being propped up by memory components it had bought in advance before prices rose, that this pre-purchased supply was dwindling, and that the company therefore faced margin pressure as it would have to buy memory at higher market prices. The allegations are unproven, and Calix has not been found liable.

Status Complaint Filed Noor v. Calix, Inc., No. 5:26-cv-04993 (N.D. Cal.)

Proposed Class Period January 28, 2026 – April 21, 2026 Purchasers of Calix (NYSE: CALX) securities

Lead Plaintiff Deadline July 27, 2026 Date to ask the court to lead the case (not required to be a class member)

Can I Claim? No — nothing to claim yet

What Allegedly Happened

According to the complaint and public investor notices, the alleged truth reached the market on April 21, 2026, after the close of trading, when Calix reported its first-quarter 2026 financial results. Plaintiffs allege the results and accompanying disclosures revealed the margin pressure from rising memory-component costs that the case says had been concealed.

On the next trading day, April 22, 2026, Calix shares fell $6.93 per share — about 13.98% — to close at $42.65. The complaint frames the earnings release as a corrective disclosure and seeks to recover losses for investors who purchased CALX during the class period. Whether any of these allegations can be proven remains to be decided by the court.

Who Is Affected

The proposed class consists of investors who purchased or otherwise acquired Calix, Inc. (NYSE: CALX) securities during the proposed class period of January 28, 2026 through April 21, 2026, inclusive. No class has been certified yet, so membership is not final. This is an investor case — it concerns statements made to shareholders and the price of CALX stock, not Calix's products, customers, or employees.

What Happens Next

This case is at the earliest stage. Under the Private Securities Litigation Reform Act, the public investor notices give investors until July 27, 2026 to ask the court to be appointed lead plaintiff — the investor, often an institution with a large loss, who directs the litigation on behalf of the class. An investor does not need to seek lead-plaintiff status, or do anything at all, to potentially share in any future recovery if a class is certified and the case ultimately succeeds or settles.

From here, the court will appoint a lead plaintiff and lead counsel, an amended complaint will typically be filed, and Calix is expected to move to dismiss. Many securities class actions are resolved years after filing, and a large share are dismissed; there is no guarantee of any recovery. There is no settlement and no claim form at this time. If a settlement is ever reached, OpenClassActions will update this page with the deadline, fund amount, and filing instructions.

Frequently Asked Questions

Is there a settlement or claim form yet?

No. This is a newly filed complaint. There is no certified class, no settlement, and no claim form. Nothing can be claimed at this stage.

Who is in the proposed class?

Investors who purchased or acquired Calix (NYSE: CALX) securities between January 28, 2026 and April 21, 2026, inclusive. The class is not finalized — a court must still rule on certification.

What does the lawsuit allege?

That Calix and certain executives made materially misleading statements that concealed that the company's favorable margins relied on memory components purchased in advance, that this pre-purchased supply was dwindling, and that Calix faced margin pressure as a result. These are unproven allegations.

What is the lead plaintiff deadline?

The public investor notices list July 27, 2026 as the deadline to move for appointment as lead plaintiff. Seeking lead-plaintiff status is optional and is not required to remain part of any certified class.

Do I need to do anything right now?

No. There is nothing to file at this stage. Only an investor who wants to seek appointment as lead plaintiff must act by the July 27, 2026 deadline.

Sources

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Status Complaint Filed

Case Title Noor v. Calix, Inc., et al.

Case Number 5:26-cv-04993

Court U.S. District Court, Northern District of California

Class Period January 28, 2026 – April 21, 2026

Lead Plaintiff Deadline July 27, 2026

Calix Securities Class Action (CALX): Memory-Component Margin Allegations and Noor v. Calix

What Is This About?

What Allegedly Happened

Who Is Affected

What Happens Next