Securities · Complaint Filed

Alphabet Investors Sue Over Gemini 3.5 Pro Launch Statements (GOOGL, GOOG)

Published October 3, 2026

Investors who bought Alphabet Class A (GOOGL) or Class C (GOOG) shares between May 19 and July 16, 2026 may be covered by a proposed securities class action alleging Alphabet, CEO Sundar Pichai and CFO Anat Ashkenazi misled the market about a June 2026 launch of Gemini 3.5 Pro. No class has been certified and there is nothing to claim.

Google search page on a screen — Alphabet Gemini 3.5 Pro securities class action
▼ Allegations Only · No Settlement Yet

This article describes a class action complaint. The statements below are unproven allegations. Alphabet Inc. and the individual defendants have not been found liable, there is no certified class, and there is nothing to claim at this time. This page is informational and is not legal advice.

What Is the Alphabet Gemini Securities Lawsuit?

An Alphabet shareholder filed a proposed securities class action on October 2, 2026, alleging that Google’s parent company told investors its next flagship AI model would launch in June 2026 without disclosing that the model was struggling in training. The case is Stewart v. Alphabet Inc., No. 3:26-cv-11290, in the U.S. District Court for the Northern District of California. It names Alphabet, CEO Sundar Pichai and CFO Anat Ashkenazi.

The complaint covers anyone who bought Alphabet securities from May 19 through July 16, 2026, the day Bloomberg reported that Google was months behind on Gemini 3.5 Pro. The defendants have not yet responded, and none of the claims has been proven.

Status Complaint Filed Filed October 2, 2026 · no judge or schedule on the docket yet
Class Period May 19 – July 16, 2026 Alphabet Class A (GOOGL) and Class C (GOOG) securities · proposed, not certified
Can I Claim? No — nothing to claim yet No settlement, no certified class, no claim form

The Statements the Complaint Challenges

The complaint focuses on two statements by Pichai: The plaintiff alleges these statements were misleading because Alphabet did not disclose that Gemini 3.5 Pro was producing disappointing training results and that its launch would be significantly delayed. The complaint argues the statements described then-existing facts, so the legal safe harbor for forward-looking statements should not protect them, and alternatively that they were made with knowledge they were false. Those are the plaintiff’s arguments; a court has not ruled on them.

The Stock Drop and What Came After

According to the complaint, Bloomberg reported at about 2 p.m. Eastern on July 16, 2026 that Google was “months behind schedule” on Gemini 3.5 Pro, and that a late-June change to the model’s training data had produced disappointing results. That day: The complaint says the stock hit its class-period high of $390.13 on May 28, 2026. It also describes two later events that it does not treat as part of the class period: on Alphabet’s July 22 earnings call, Pichai said Gemini 3.5 Pro was “currently in testing” and that Alphabet had begun its largest pretraining run yet for Gemini 4; and on September 30, the complaint says, Reuters reported that Google no longer planned to release Gemini 3.5 Pro, the same day Google announced a limited rollout of a model called Gemini 4 Argon.

Who Could Be Covered

The proposed class is all persons and entities that purchased or otherwise acquired Alphabet securities between May 19, 2026 and July 16, 2026, inclusive, and were damaged by it. That includes buyers of both share classes. Alphabet, Pichai, Ashkenazi, the company’s officers and directors, their immediate families and entities they control are excluded. No class has been certified.

The complaint brings two claims: violations of Section 10(b) of the Securities Exchange Act and Rule 10b-5 against all defendants, and control-person liability under Section 20(a) against Pichai and Ashkenazi. It seeks damages for class members, plus interest, costs and fees.

Lead Plaintiff Deadline and What Happens Next

Securities class actions follow the Private Securities Litigation Reform Act. Under that law, notice of the case is published, and investors who want to serve as lead plaintiff have 60 days from that notice to ask the court. The exact date is set by the published notice; if it ran on the October 2 filing date, the window would close around the start of December 2026. The court then appoints a lead plaintiff and lead counsel, who usually file an amended complaint, and the defendants typically move to dismiss. Class members do not have to seek the lead role to remain part of the proposed class.

As of October 2, the docket showed only the complaint, a proposed summons and a corporate disclosure statement; no judge had yet been listed. This is a separate case from the Gemini subscription pricing lawsuit brought by consumers and the Gemini Gmail privacy lawsuit; this one is brought on behalf of shareholders.

Read the Complaint

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Questions

Who is covered by the Alphabet Gemini securities class action?

The complaint proposes a class of all persons and entities that purchased or otherwise acquired Alphabet securities between May 19, 2026 and July 16, 2026, inclusive, and were damaged, which includes Class A shares (GOOGL) and Class C shares (GOOG). Alphabet, the individual defendants, company officers and directors and their families are excluded. No class has been certified.

What does the lawsuit say Alphabet got wrong about Gemini 3.5 Pro?

It alleges that CEO Sundar Pichai said at Google I/O on May 19, 2026, and again on a June 3 investor call, that Gemini 3.5 Pro would arrive in June, while not disclosing that its training results were disappointing and the launch would be significantly delayed. Alphabet has not responded in court, and the claims have not been proven.

How much did Alphabet stock fall?

According to the complaint, Class A shares (GOOGL) fell $16.46, or 4.4%, to close at $354.46 on July 16, 2026, after Bloomberg reported that Google was months behind schedule on Gemini 3.5 Pro. Class C shares (GOOG) fell $16.39, or 4.4%, to $353.58.

Is there an Alphabet settlement or claim form?

No. The complaint was filed October 2, 2026. There is no settlement, no certified class and no claim form. Securities class actions usually take years to resolve, and many are dismissed before any money is paid.

What is the lead plaintiff deadline?

Under the Private Securities Litigation Reform Act, investors who want to serve as lead plaintiff must ask the court within 60 days after notice of the case is first published. The exact date is set by that published notice; if it ran on the October 2, 2026 filing date, the window closes around the start of December 2026. Class members do not need to seek lead plaintiff status to remain in the class.

Sources

• Stewart v. Alphabet Inc., No. 3:26-cv-11290 (N.D. Cal.) — Class Action Complaint for Violations of the Federal Securities Laws (ECF No. 1, filed Oct. 2, 2026), via the CourtListener docket

Quotations from Alphabet executives and from press reports are as quoted in the complaint. Stock prices are the complaint’s figures. OpenClassActions.com is a consumer news site; it is not a law firm and is not affiliated with any party. It is not legal advice or investment advice.
For more class actions keep scrolling below.
Status Complaint filed
Case Title Stewart v. Alphabet Inc.
Case Number 3:26-cv-11290
Court U.S. District Court, Northern District of California
Date Filed October 2, 2026
Class Period May 19, 2026 – July 16, 2026 (GOOGL, GOOG)
Claims Exchange Act §10(b) and Rule 10b-5 · §20(a)
Official Website CourtListener Docket

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