New York, October 12, 2026 / PRNewswire / -- Nationally renowned investor rights law firms Bronstein, Gewirtz, and Grossman, LLC announce that they have filed a class action lawsuit against Duolingo, Inc (Nasdaq ticker: DUOL) and some of its executives.

This lawsuit is intended to represent all individuals and entities that purchased or otherwise acquired Duolingo securities from May 2, 2025, to February 26, 2026 (including both start and end dates), herein referred to as the 'class action period,' in order to recover losses incurred due to the defendant's alleged violations of federal securities laws. The law firm encourages interested investors to join this case by visiting their website at bgandg.com / cases / duolingo-inc-duol -class_action_lawsuit.

Duolingo Case Details

The indictment alleges that throughout the duration of the class action, the defendant failed to disclose the following information:

• The daily active user ( DAU ) growth rate is sustained by deliberately increasing user friction, which includes significantly increasing advertising spending, promoting subscription level upgrades, and deteriorating product quality; Duolingo is also aware that any degree of user friction can lead to users leaving the app, which will ultimately have a negative impact on the DAU growth rate;
• The company's rigorous A/B testing indicates that the increased friction in the free user experience is having a negative impact on the growth rate of DAU.
• Duolingo The quickly generated AI content is undermining the quality of the company's product supply, negatively affecting user experience and user trends, and threatening the sustainability of the company's financial performance; as well as
• The ongoing A/B testing has enabled the company to realize that its rapidly generated AI content, which has lower monetization potential and quality, is undermining the product experience of Duolingo as well as the value proposition of its subscription tier.

Duolingo What should investors do next?

A class action has been filed. If you would like to view a copy of the complaint, you may visit the law firm's website at bgandg.com / cases / duolingo-inc-duol -class_action_lawsuit; or contact the Peretz Bronstein attorneys or client relationship managers at Bronstein , Gewirtz & Grossman , LLC , Nathan Miller, at telephone number 917-590-0911. If you have suffered losses in Duolingo, you may request to be appointed as the lead plaintiff by the court before December 7, 2026. Even if you are not appointed as the lead plaintiff, you are still eligible to receive any compensation.

Duolingo Investors do not need to bear any fees.

Bronstein, Gewirtz & Grossman LLC indicate that they act as agents for class-action investors on a risk-bearing basis. This means that the law firm will only request the court to reimburse its out-of-pocket expenses and attorney fees, which are usually a certain percentage of the total amount recovered, in the event of a successful lawsuit.

Why choose Bronstein, Gewirtz, Grossman, and LLC to handle the Duolingo securities class action?

According to the firm, it is a nationally renowned organization that represents investors in class-action lawsuits against securities fraud and derivative lawsuits filed by shareholders. The law firm has recovered hundreds of millions of dollars for investors across the United States. For more information, please refer to www.bgandg.com.

Bronstein, Gewirtz & Grossman, LLC founding partners. Peretz Bronstein stated: "Our focus is on restoring investors' capital and ensuring corporate accountability, which helps to maintain the fundamental integrity of the market."

For updates, you can follow the institution on LinkedIn, X, Facebook, or Instagram.

Contact Information

Peretz Bronstein Lawyers or Nathan Miller

Lawyer advertisement.

Past results do not guarantee similar outcomes in the future.