DUOLINGO INC

Ticker: DUOL CUSIP: 26603R106 Class: EQTY

Caitong International Asset Management Co., Ltd's Holding History (CIK: 0001963355)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 416 Value ($000) $73 Avg Close $235.64 Range $166.27 - $353.00

Q2 2025

Shares 146 Value ($000) $60 Avg Close $438.78 Range $274.97 - $544.93

Q1 2025

Shares 100 Value ($000) $31 Avg Close $342.01 Range $263.68 - $441.76

Q4 2024

Shares 129 Value ($000) $42 Avg Close $318.27 Range $273.06 - $378.48

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	416	$73	$235.64	$166.27 - $353.00
Q2 2025	146	$60	$438.78	$274.97 - $544.93
Q1 2025	100	$31	$342.01	$263.68 - $441.76
Q4 2024	129	$42	$318.27	$273.06 - $378.48