DUOLINGO INC

Ticker: DUOL CUSIP: 26603R106 Class: EQTY

PEAK6 LLC's Holding History (CIK: 0001389958)

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

Q4 2025

Shares 3 Value ($000) $1 Avg Close $235.64 Range $166.27 - $353.00

Q3 2025

Shares 104,573 Value ($000) $33,656 Avg Close $334.45 Range $256.63 - $468.00

Q2 2025

Shares 925 Value ($000) $379 Avg Close $438.78 Range $274.97 - $544.93

Q1 2025

Shares 2 Value ($000) $1 Avg Close $342.01 Range $263.68 - $441.76

Q4 2024

Shares 2 Value ($000) $1 Avg Close $318.27 Range $273.06 - $378.48

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3	$1	$235.64	$166.27 - $353.00
Q3 2025	104,573	$33,656	$334.45	$256.63 - $468.00
Q2 2025	925	$379	$438.78	$274.97 - $544.93
Q1 2025	2	$1	$342.01	$263.68 - $441.76
Q4 2024	2	$1	$318.27	$273.06 - $378.48