多邻国Duolingo, Inc.（DUOL） 2021年10-K年度报告「NASDAQ」.pdf

1、UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington,D.C.20549FORM 10-K(Mark One)ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31,2021ORTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934

2、For the transition period from _ to _Commission file number 001-40653Duolingo,Inc.(Exact name of registrant as specified in its charter)Delaware45-3055872(State or other jurisdiction of incorporation or organization)(I.R.S.Employer Identification No.)5900 Penn AvenuePittsburgh,Pennsylvania 15206(412

3、)567-6602(Address,Including Zip Code,and Telephone Number,IncludingArea Code,of Registrants Principal Executive Offices)Securities registered pursuant to Section 12(b)of the Act:Title of each classTrading Symbol(s)Name of each exchange on which registeredClass A common stock,$0.0001 per shareDUOL Th

4、e Nasdaq Stock Market LLCIndicate by check mark if the registrant is a well-known seasoned issuer,as defined in Rule 405 of the Securities Act.Yes No Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d)of the Act.Yes No Indicate by check ma

5、rk whether the registrant:(1)has filed all reports required to be filed by Section 13 or 15(d)of the Securities Exchange Act of 1934 during the preceding 12 months(or for suchshorter period that the registrant was required to file such reports);and(2)has been subject to such filing requirements for

6、the past 90 days.Yes No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T(232.405 of this chapter)duringthe preceding 12 months(or for such shorter period that the registrant was requ