INVESTOR ACTION NOTICE: Moore Law PLLC Encourages Investors in Duolingo, Inc. to Contact Law Firm

• Duolingo, Inc. (NASDAQ: DUOL) shareholders should email fletcher@fmoorelaw.com

NEW YORK, Oct. 19, 2026 /PRNewswire/ --

What is the Investigation About?

On November 5, 2025, Duolingo reported that daily active user growth slowed to 36%, compared with 49% in the first quarter and 40% in the second quarter. Management also announced that Duolingo would prioritize user growth over monetization. Following this news, Duolingo stock fell $66.28 per share, or approximately 25%, to close at $193.74 per share on November 6, 2025.

On January 12, 2026, Duolingo announced its Chief Financial Officer's resignation and preliminary fourth-quarter figures showing daily active user growth of approximately 30%. Following this news, the stock fell $14.92 per share, or 8.45%, to close at $161.74 per share that day.

On February 26, 2026, after the market closed, Duolingo projected 2026 daily active user growth of 20% and bookings growth of 10% to 12%. Management acknowledged that its monetization efforts had introduced friction that it knew would cause users to leave and slow user growth. Following this news, the stock fell $16.45 per share, or approximately 14%, to close at $101.00 per share on February 27, 2026.

If you own Duolingo, Inc. (NASDAQ: DUOL) securities, please contact Fletcher Moore at fletcher@fmoorelaw.com.

You may be able to seek monetary damages, corporate governance reforms, reimbursement to the company, and a court approved incentive award at no cost to you whatsoever.  All representation is on a contingency fee basis. Shareholders pay no fees or expenses.

MOORE LAW PLLC

30 Wall Street, 8^th Floor

New York, NY 10005

fletcher@fmoorelaw.com

www.fmoorelaw.com

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SOURCE Moore Law PLLC