0001628280-25-059129.txt : 20251230 0001628280-25-059129.hdr.sgml : 20251230 20251230171212 ACCESSION NUMBER: 0001628280-25-059129 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20251229 FILED AS OF DATE: 20251230 DATE AS OF CHANGE: 20251230 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Chen Stephen C. CENTRAL INDEX KEY: 0001869758 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40653 FILM NUMBER: 251615074 MAIL ADDRESS: STREET 1: C/O DUOLINGO, INC. STREET 2: 5900 PENN AVE. CITY: PITTSBURGH STATE: PA ZIP: 15206 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Duolingo, Inc. CENTRAL INDEX KEY: 0001562088 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-PREPACKAGED SOFTWARE [7372] ORGANIZATION NAME: 06 Technology EIN: 453055872 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 5900 PENN AVE, SECOND FLOOR CITY: PITTSBURGH STATE: PA ZIP: 15206 BUSINESS PHONE: (412) 347-6116 MAIL ADDRESS: STREET 1: 5900 PENN AVE, SECOND FLOOR CITY: PITTSBURGH STATE: PA ZIP: 15206 4 1 wk-form4_1767132728.xml FORM 4 X0508 4 2025-12-29 0 0001562088 Duolingo, Inc. DUOL 0001869758 Chen Stephen C. C/O DUOLINGO, INC. 5900 PENN AVENUE PITTSBURGH PA 15206 0 1 0 0 General Counsel 0 Class A Common Stock 2025-12-29 4 M 0 1800 14.42 A 33342 D Stock Option (Right to Buy) 14.42 2025-12-29 4 M 0 1800 0 D 2030-03-10 Class A Common Stock 1800 706 D The shares subject to the option are fully vested and exercisable. /s/ Stephen C. Chen 2025-12-30