Insider Trading — QuoTrend

Chen Stephen C. – Insider Transactions

Ticker	Owner	Relationship	Date	Transaction	Cost	#Shares	Value ($)	#Shares Total	SEC Form 4
DUOL	Chen Stephen C.	General Counsel	Jun 17 '26	Option Exercise	14.42	58	836	52,865	Jun 18
DUOL	Chen Stephen C.	General Counsel	May 18 '26	Sale	113.61	1,977	224,603	52,807	May 19
DUOL	Chen Stephen C.	General Counsel	May 15 '26	Sale	112.16	820	91,971	54,784	May 19
DUOL	Chen Stephen C.	General Counsel	May 12 '26	Option Exercise	14.42	648	9,344	31,193	May 13
DUOL	Chen Stephen C.	General Counsel	Feb 18 '26	Sale	113.26	1,901	215,313	30,545	Feb 20
DUOL	Chen Stephen C.	General Counsel	Feb 17 '26	Sale	110.06	896	98,614	32,446	Feb 20
DUOL	Chen Stephen C.	General Counsel	Dec 29 '25	Option Exercise	14.42	1,800	25,956	33,342	Dec 30
DUOL	Chen Stephen C.	General Counsel	Nov 18 '25	Sale	175.87	1,514	266,265	31,542	Nov 19
DUOL	Chen Stephen C.	General Counsel	Nov 17 '25	Sale	177.95	1,282	228,132	33,056	Nov 19
DUOL	Chen Stephen C.	General Counsel	Sep 18 '25	Option Exercise	14.42	1,700	24,514	34,338	Sep 19
DUOL	Chen Stephen C.	General Counsel	Aug 26 '25	Sale	321.36	1,515	486,860	32,638	Aug 28
DUOL	Chen Stephen C.	General Counsel	Aug 15 '25	Sale	329.03	1,282	421,816	34,153	Aug 18
DUOL	Chen Stephen C.	General Counsel	May 16 '25	Sale	526.94	2,635	1,388,480	36,185	May 19
DUOL	Chen Stephen C.	General Counsel	May 15 '25	Sale	531.71	1,257	668,359	38,820	May 16