Duolingo

Item 7.01 Regulation FD Disclosure. On August 18, 2026, during an in-person meeting with certain investors at the Company's offices, a screen in the meeting room inadvertently displayed information indicating that the DAU growth rate on August 17, 2026 was estimated to be 27.4% relative to the comparable day of the prior year and there had been similar estimated growth rates for the previous days in August. The Company has not completed its normal review and validation of its preliminary internal data, and this information should not be read as indicative of the Company's expected results for Q3 2026 or any future period. The Company's most recent guidance is set forth in its Q2 2026 shareholder letter dated August 5, 2026. The Company is not providing any, and does not intend to provide, additional or updated guidance at this time. The information in this Current Report on Form 8-K is being furnished and shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the Exchange Act ), or otherwise subject to the liabilities of that Section, nor shall it be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. DUOLINGO, INC. Date: August 18, 2026 By: /s/ Gillian Munson Gillian Munson Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)