Overview

Basic information

Litigation

Active legal matters

Material Events

8-K disclosures

SEC Filings

Key regulatory docs

Insider Transactions

Ownership changes

Overview

Basic information

Litigation

Active legal matters

Material Events

8-K disclosures

SEC Filings

Key regulatory docs

Insider Transactions

Ownership changes

Securities Class Action

Securities fraud litigation history and active cases

In Litigation

1

Settlement

0

Closed

0

Total Settlement

$0

ACELYRIN, Inc. (SLRN) Class Action Lawsuit (November 2023)

In Litigation

2:23cv9672 • November 15, 2023

Class Period Start

May 4, 2023

Class Period End

September 11, 2023

PSLRA Deadline

January 16, 2024

Case Allegations

10b5 + Sec11

10b-5 Statutes of Repose

May 4, 2026

Sec11 Statutes of Repose

May 4, 2026

Country

United States

Court

Federal Court

Docket History

Sep 22, 2026

Motion to Dismiss

After reviewing the complaint(s) filed by plaintiffs, defendants have filed a motion requesting that the court dismiss some or all of the plaintiffs' claims. In a motion to dismiss, defendants might challenge the validity of plaintiffs' claims or adequacy of plaintiffs' pleadings. Once a motion to dismiss is filed, the judge will make a decision on whether part or all of the case should be dismissed or the case can proceed as alleged.

Sep 8, 2026

Motion to Dismiss Denied

The court has denied the defendants' request to dismiss the lawsuit. The case can now move forward to the next stage of litigation.

Feb 19, 2026

Motion to Dismiss

After reviewing the complaint(s) filed by plaintiffs, defendants have filed a motion requesting that the court dismiss some or all of the plaintiffs' claims. In a motion to dismiss, defendants might challenge the validity of plaintiffs' claims or adequacy of plaintiffs' pleadings. Once a motion to dismiss is filed, the judge will make a decision on whether part or all of the case should be dismissed or the case can proceed as alleged.

Feb 5, 2026

Second Amended Complaint

A new complaint has been filed on behalf of certain investors in ACELYRIN, Inc.. Amended complaints may contain additional facts, parties, allegations, a change in the class definition, etc.

Jan 26, 2026

Motion to Dismiss Granted

The court has granted the defendants' request to dismiss the lawsuit. Depending on the court's decision, the plaintiffs may be allowed to file an updated complaint or pursue an appeal.

View all Updates

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