DUOLINGO INC

Ticker: DUOL CUSIP: 26603R106 Class: EQTY

HARBOUR INVESTMENTS, INC.'s Holding History (CIK: 0000810121)

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

Q4 2025

Shares 5 Value ($000) $1 Avg Close $235.64 Range $166.27 - $353.00

Q3 2025

Shares 85 Value ($000) $27 Avg Close $334.45 Range $256.63 - $468.00

Q2 2025

Shares 34 Value ($000) $14 Avg Close $438.78 Range $274.97 - $544.93

Q1 2025

Shares 27 Value ($000) $8 Avg Close $342.01 Range $263.68 - $441.76

Q4 2024

Shares 11 Value ($000) $4 Avg Close $318.27 Range $273.06 - $378.48

Q3 2024

Shares 2 Value ($000) $1 Avg Close $205.07 Range $145.05 - $297.56

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	5	$1	$235.64	$166.27 - $353.00
Q3 2025	85	$27	$334.45	$256.63 - $468.00
Q2 2025	34	$14	$438.78	$274.97 - $544.93
Q1 2025	27	$8	$342.01	$263.68 - $441.76
Q4 2024	11	$4	$318.27	$273.06 - $378.48
Q3 2024	2	$1	$205.07	$145.05 - $297.56