VP of Product - Growth and Monetization

Bronstein, Gewirtz & Grossman LLC urges Duolingo, Inc. investors to act: Class Action filed alleging investor harm. Oct 12, 2026, 12:00 ET NEW YORK, Oct. 12, 2026 /PRNewswire/ - Bronstein, Gewirtz & Grossman, LLC, a nationally recognized investor-rights law firm, announces that a class action lawsuit has been filed against Duolingo, Inc. (NASDAQ: DUOL) and certain of its officers. This lawsuit seeks to recover damages against Defendants for alleged violations of the federal securities laws on behalf of all persons and entities that purchased or otherwise acquired Duolingo securities between May 2, 2025 and February 26, 2026, both dates inclusive (the "Class Period"). Such investors are encouraged to join this case by visiting the firm's site: bgandg.com/cases/duolingo-inc-duol-class_action_lawsuit. Duolingo Case Details The Complaint alleges that throughout the Class Period, Defendants failed to disclose that: * Daily Active User ("DAU") growth rates were being leveraged against deliberately added user friction in the form of significant increases in ad volume, subscription tier upsells, and worsened product quality, and Duolingo understood that any amount of user friction would cause users to leave the app and, ultimately, negatively impact DAU growth rates; * the Company's rigorous A/B testing demonstrated that increased friction in the free user experience was having negative impacts on DAU growth rates; * Duolingo's quickly generated AI content was worsening the quality of the Company's product offerings, negatively impacting the user experience and user trends, and threatening the sustainability of the Company's financial performance; and * Duolingo's constant A/B testing informed the Company that its monetization push and lower-quality, rapidly generated AI content were degrading the Duolingo product experience and the value proposition of its subscription tiers. What's Next for Duolingo Investors? A class action lawsuit has already been filed. If you wish to review a copy of the Complaint, you can visit the firm's site: bgandg.com/cases/duolingo-inc-duol-class_action_lawsuit. or you may contact Peretz Bronstein, Esq. or his Client Relations Manager, Nathan Miller, of Bronstein, Gewirtz & Grossman, LLC at 917-590-0911. If you suffered a loss in Duolingo you have until December 7, 2026, to request that the Court appoint you as lead plaintiff. Your ability to share in any recovery doesn't require that you serve as lead plaintiff. No Cost to Duolingo Investors We, Bronstein, Gewirtz & Grossman LLC, represent investors in class actions on a contingency fee basis. That means we will ask the court to reimburse us for out-of-pocket expenses and attorneys' fees, usually a percentage of the total recovery, only if we are successful. Why Bronstein, Gewirtz & Grossman, LLC for Duolingo Securities Class Action? Bronstein, Gewirtz & Grossman, LLC is a nationally recognized firm that represents investors in securities fraud class actions and shareholder derivative suits. Our firm has recovered hundreds of millions of dollars for investors nationwide. More at www.bgandg.com "Our practice centers on restoring investor capital and ensuring corporate accountability, which serves to uphold the essential integrity of the marketplace," said Peretz Bronstein, Founding Partner of Bronstein, Gewirtz & Grossman, LLC. Contact Info Peretz Bronstein, Esq. or Nathan Miller Bronstein, Gewirtz & Grossman, LLC 917-590-0911 | [email protected] Attorney advertising. Prior results do not guarantee similar outcomes. SOURCE Bronstein, Gewirtz & Grossman, LLC

NASDAQ: DUOL: Kessler Topaz Meltzer & Check, LLP announces the filing of a securities fraud Class Action lawsuit against Duolingo, Inc. Did you buy DUOL Class A common stock between May 2, 2025 and February 26, 2026? Affected DUOL Investor Summary * Who: Duolingo, Inc. (NASDAQ: DUOL) * What: Securities fraud class action lawsuit filed * Class Period: May 2, 2025 through February 26, 2026 * Deadline to Seek Lead Plaintiff Status: December 7, 2026 * Key Lawsuit Allegations: Material misstatements and/or omissions concerning the company's monetization and growth strategies * Investor Action: Contact Kessler Topaz Meltzer & Check, LLP (www.ktmc.com) for recovery options RADNOR, Pa., Oct. 10, 2026 (GLOBE NEWSWIRE) - Kessler Topaz Meltzer & Check, LLP (www.ktmc.com), a nationally recognized securities litigation law firm, informs investors that a securities fraud class action lawsuit has been filed against Duolingo, Inc. (Duolingo) (NASDAQ: DUOL) on behalf of those who purchased or acquired Duolingo Class A common stock between May 2, 2025 and February 26, 2026, inclusive. The lawsuit is filed in the United States District Court for the Western District of Pennsylvania and is captioned City of Dearborn Heights Act 345 Police & Fire Retirement System v. Duolingo, Inc., No. 26-cv-02197 (W.D. Pa.). Investors have until December 7, 2026, to file for lead plaintiff status. CONTACT KESSLER TOPAZ TO DISCUSS YOUR LEGAL RIGHTS: If you purchased or acquired Duolingo Class A common stock and have lost money on your investment, please provide your information here: https://www.ktmc.com/duol-duolingo-inc-class-action-lawsuit?utm_source=Globe&utm_medium=pressrelease&utm_campaign=duol&mktm=PR You can also contact attorney Jonathan Naji, Esq. by calling (484) 270-1453 or by email at [email protected]. There is no cost or obligation to speak with an attorney. DUOLINGO, INC. CLASS ACTION LAWSUIT - COMPLAINT ALLEGATION SUMMARY: The complaint alleges that, throughout the Class Period, Defendants made materially false and/or misleading statements, as well as failed to disclose material facts about the company's business, operations, and prospects. Specifically, Defendants misrepresented and/or failed to disclose that: (1) daily active user ("DAU") growth rates were being leveraged against deliberately added user friction in the form of significant increases in ad volume, subscription tier upsells, and worsened product quality, and Duolingo understood that any amount of user friction would cause users to leave the app and, ultimately, negatively impact DAU growth rates; (2) Duolingo's rigorous A/B testing demonstrated to the company that increased friction in the free user experience, including its monetization push and rapidly generated low-quality AI content, was having negative impacts on DAU growth rates; (3) Duolingo's quickly generated AI content was worsening the quality of Duolingo's product offerings, negatively impacting the user experience and user trends, and threatening the sustainability of the company's financial performance; and (4) as a result of the foregoing, Defendants' statements about the company's business, operations, and prospects were materially false and misleading and/or lacked a reasonable basis at all relevant times. Why did Duolingo's Stock Drop? On November 5, 2025, Duolingo reported its third quarter financial results, revealing a decline in DAU growth to 36%, down from 49% in the first quarter. Duolingo also revealed that the company would reverse course on its monetization push and instead focus on user growth going forward. On this news, Duolingo's stock price fell 25%, to close at $193.74 on November 6, 2025. Then, on January 12, 2026, Duolingo announced that its CFO had resigned. Duolingo also provided limited preliminary fourth quarter operating metrics, showing DAU growth of only 30%. On this news, Duolingo's stock price fell another 8.5%, to close at $161.74 on January 12, 2026. Finally, after the market closed on February 26, 2026, Duolingo announced its fourth quarter financial results, confirming the slowed DAU growth and revealing that the "small financial impact" from its strategic shift was anything but. Specifically, Duolingo revealed that its 2026 DAU growth would come in at a meager 20% and be accompanied by lower bookings and less profitability. On this news, Duolingo's stock price fell 14%, to close at $101 on February 27, 2026. WHAT DUOLINGO, INC. INVESTORS CAN DO NOW: * File to be lead plaintiff by December 7, 2026. * Contact Kessler Topaz for a free case evaluation. All representation is on a contingency fee basis, there is no cost to you. * Retain counsel of choice or take no action. THE LEAD PLAINTIFF PROCESS FOR DUOLINGO, INC. INVESTORS: Duolingo investors have the opportunity to lead the lawsuit. Such investors may, no later than December 7, 2026, seek to be appointed as a lead plaintiff representative of the class through Kessler Topaz Meltzer & Check, LLP or other counsel, or may choose to do nothing and remain an absent class member. A lead plaintiff is a representative party who acts on behalf of all class members in directing the litigation. The lead plaintiff is usually the investor or small group of investors who have the largest financial interest and who are also adequate and typical of the proposed class of investors. The lead plaintiff selects counsel to represent the lead plaintiff and the class and these attorneys, if approved by the court, are lead or class counsel. Your ability to share in any recovery is not affected by the decision of whether or not to serve as a lead plaintiff. Kessler Topaz Meltzer & Check, LLP encourages Duolingo investors to contact the firm for more information. ABOUT KESSLER TOPAZ MELTZER & CHECK, LLP: Kessler Topaz Meltzer & Check, LLP is a leading U.S. plaintiff-side law firm focused on securities-fraud class actions and global investor protection. The firm represents individual investors as well as institutions, such as major pension funds, asset managers, and international investors. Kessler Topaz has led some of the largest recoveries in securities litigation and has been recognized by peers and the legal media with numerous accolades, including being recognized in Chambers & Partners USA 2026 as a Band 1 Top Firm in Securities and Class Actions, Legal 500's Tier 1 Rankings for Securities and M&A Litigation, The National Law Journal's Plaintiff's Hot List and Trailblazers in Plaintiffs' Law, BTI Consulting Group's Honor Roll of Most Feared Law Firms, The Legal Intelligencer's Class Action Firm of the Year, Lawdragon's Leading Plaintiff Financial Lawyers, and Law360's Titans of the Plaintiffs Bar. The firm operates globally with offices in Pennsylvania and California. Kessler Topaz has recovered over $25 billion for our clients and the classes they represent. The complaint in this matter was not filed by Kessler Topaz. Jonathan Naji, Esq. (484) 270-1453 280 King of Prussia Road Radnor, PA 19087 [email protected] May be considered attorney advertising in certain jurisdictions. Past results do not guarantee future outcomes.

Duolingo, Inc. notice of December 7, 2026 application deadline for Class Action lawsuit - contact Lewis Kahn, esq. at Kahn Swick & Foti, LLC, before application deadline. * 4 hrs ago Kahn Swick & Foti, LLC ("KSF") and KSF partner, former Attorney General of Louisiana, Charles C. Foti, Jr., notifies investors in Duolingo, Inc. (NasdaqGS: DUOL) of a class action securities lawsuit. CLASS DEFINITION: The lawsuit seeks to recover losses on behalf of investors who purchased Duolingo, Inc. Class A common stock between May 2, 2025 and February 26, 2026, inclusive (the "Class Period"). This action is pending in the United States District Court for the Western District of Pennsylvania. Follow the link below to get more information and be contacted by a member of its team: Duolingo investors should contact KSF Managing Partner Lewis Kahn toll-free at 1-833-538-3615 or via email ([email protected]), or visit https://www.ksfcounsel.com/cases/nasdaqgs-duol/ to learn more. CASE DETAILS: According to the Complaint, throughout the Class Period, Defendants made materially false and/or misleading statements, as well as failed to disclose material adverse facts about the Company's business, operations, and prospects. Specifically, the lawsuit alleges that Defendants failed to disclose to investors that: (i) Duolingo was deliberately adding friction to the user experience, through sharply increased ad volume, upselling of subscription tiers, and declining product quality, which Defendants knew would drive users away from the app and ultimately slow Daily Active User ("DAU") growth; (ii) Duolingo's extensive A/B testing showed Defendants that added friction in the free user experience was hurting DAU growth; (iii) Duolingo's rapidly produced AI content was degrading its product offerings, harming the user experience and user trends, and putting the sustainability of Duolingo's financial performance at risk; and (iv) rather than fueling sustained growth and strong user momentum through content and "product improvements" that "get improved retention," Duolingo's monetization push and lower-quality AI content were, as its ongoing A/B testing revealed, eroding both the product experience and the value of its subscription tiers. The case is City of Dearborn Heights Act 345 Police & Fire Retirement System v. Duolingo, Inc., No. 26-cv-02199. WHAT TO DO? If you invested in Duolingo and suffered a loss during the relevant time frame, you have until December 7, 2026 to request that the Court appoint you as lead plaintiff; however, your ability to share in any recovery does not require that you serve as a lead plaintiff. KSF, whose partners include former Louisiana Attorney General Charles C. Foti, Jr., is one of the nation's premier boutique securities litigation law firms. This past year, KSF was ranked by SCAS among the top 10 firms nationally based upon total settlement value. KSF serves a variety of clients, including public and private institutional investors, and retail investors - in seeking recoveries for investment losses emanating from corporate fraud or malfeasance by publicly traded companies. KSF has offices in New York, Delaware, California, Louisiana, Chicago, and a representative office in Luxembourg. TOP 10 Plaintiff Law Firms - According to ISS Securities Class Action Services >>>For More Information about the case, Click HERE Media gallery